Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* util.c |
a687059c | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
4 | * 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
a687059c | 5 | * |
d48672a2 LW |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. | |
8d063cd8 | 8 | * |
8d063cd8 | 9 | */ |
a0d0e21e LW |
10 | |
11 | /* | |
4ac71550 TC |
12 | * 'Very useful, no doubt, that was to Saruman; yet it seems that he was |
13 | * not content.' --Gandalf to Pippin | |
14 | * | |
cdad3b53 | 15 | * [p.598 of _The Lord of the Rings_, III/xi: "The PalantÃr"] |
a0d0e21e | 16 | */ |
8d063cd8 | 17 | |
166f8a29 DM |
18 | /* This file contains assorted utility routines. |
19 | * Which is a polite way of saying any stuff that people couldn't think of | |
20 | * a better place for. Amongst other things, it includes the warning and | |
21 | * dieing stuff, plus wrappers for malloc code. | |
22 | */ | |
23 | ||
8d063cd8 | 24 | #include "EXTERN.h" |
864dbfa3 | 25 | #define PERL_IN_UTIL_C |
8d063cd8 | 26 | #include "perl.h" |
7dc86639 | 27 | #include "reentr.h" |
62b28dd9 | 28 | |
97cb92d6 | 29 | #if defined(USE_PERLIO) |
2e0cfa16 | 30 | #include "perliol.h" /* For PerlIOUnix_refcnt */ |
6f408c34 | 31 | #endif |
2e0cfa16 | 32 | |
64ca3a65 | 33 | #ifndef PERL_MICRO |
a687059c | 34 | #include <signal.h> |
36477c24 | 35 | #ifndef SIG_ERR |
36 | # define SIG_ERR ((Sighandler_t) -1) | |
37 | #endif | |
64ca3a65 | 38 | #endif |
36477c24 | 39 | |
3be8f094 TC |
40 | #include <math.h> |
41 | #include <stdlib.h> | |
42 | ||
172d2248 OS |
43 | #ifdef __Lynx__ |
44 | /* Missing protos on LynxOS */ | |
45 | int putenv(char *); | |
46 | #endif | |
47 | ||
40262ff4 AB |
48 | #ifdef __amigaos__ |
49 | # include "amigaos4/amigaio.h" | |
50 | #endif | |
51 | ||
868439a2 JH |
52 | #ifdef HAS_SELECT |
53 | # ifdef I_SYS_SELECT | |
54 | # include <sys/select.h> | |
55 | # endif | |
56 | #endif | |
57 | ||
470dd224 | 58 | #ifdef USE_C_BACKTRACE |
0762e42f JH |
59 | # ifdef I_BFD |
60 | # define USE_BFD | |
61 | # ifdef PERL_DARWIN | |
62 | # undef USE_BFD /* BFD is useless in OS X. */ | |
63 | # endif | |
64 | # ifdef USE_BFD | |
65 | # include <bfd.h> | |
66 | # endif | |
67 | # endif | |
470dd224 JH |
68 | # ifdef I_DLFCN |
69 | # include <dlfcn.h> | |
70 | # endif | |
71 | # ifdef I_EXECINFO | |
72 | # include <execinfo.h> | |
73 | # endif | |
74 | #endif | |
75 | ||
b001a0d1 FC |
76 | #ifdef PERL_DEBUG_READONLY_COW |
77 | # include <sys/mman.h> | |
78 | #endif | |
79 | ||
8d063cd8 | 80 | #define FLUSH |
8d063cd8 | 81 | |
a687059c LW |
82 | /* NOTE: Do not call the next three routines directly. Use the macros |
83 | * in handy.h, so that we can easily redefine everything to do tracking of | |
84 | * allocated hunks back to the original New to track down any memory leaks. | |
20cec16a | 85 | * XXX This advice seems to be widely ignored :-( --AD August 1996. |
a687059c LW |
86 | */ |
87 | ||
79a92154 | 88 | #if defined (DEBUGGING) || defined(PERL_IMPLICIT_SYS) || defined (PERL_TRACK_MEMPOOL) |
1f4d2d4e NC |
89 | # define ALWAYS_NEED_THX |
90 | #endif | |
91 | ||
b001a0d1 FC |
92 | #if defined(PERL_TRACK_MEMPOOL) && defined(PERL_DEBUG_READONLY_COW) |
93 | static void | |
94 | S_maybe_protect_rw(pTHX_ struct perl_memory_debug_header *header) | |
95 | { | |
96 | if (header->readonly | |
97 | && mprotect(header, header->size, PROT_READ|PROT_WRITE)) | |
98 | Perl_warn(aTHX_ "mprotect for COW string %p %lu failed with %d", | |
99 | header, header->size, errno); | |
100 | } | |
101 | ||
102 | static void | |
103 | S_maybe_protect_ro(pTHX_ struct perl_memory_debug_header *header) | |
104 | { | |
105 | if (header->readonly | |
106 | && mprotect(header, header->size, PROT_READ)) | |
107 | Perl_warn(aTHX_ "mprotect RW for COW string %p %lu failed with %d", | |
108 | header, header->size, errno); | |
109 | } | |
110 | # define maybe_protect_rw(foo) S_maybe_protect_rw(aTHX_ foo) | |
111 | # define maybe_protect_ro(foo) S_maybe_protect_ro(aTHX_ foo) | |
112 | #else | |
113 | # define maybe_protect_rw(foo) NOOP | |
114 | # define maybe_protect_ro(foo) NOOP | |
115 | #endif | |
116 | ||
3f07c2bc FC |
117 | #if defined(PERL_TRACK_MEMPOOL) || defined(PERL_DEBUG_READONLY_COW) |
118 | /* Use memory_debug_header */ | |
119 | # define USE_MDH | |
120 | # if (defined(PERL_POISON) && defined(PERL_TRACK_MEMPOOL)) \ | |
121 | || defined(PERL_DEBUG_READONLY_COW) | |
122 | # define MDH_HAS_SIZE | |
123 | # endif | |
124 | #endif | |
125 | ||
26fa51c3 AMS |
126 | /* paranoid version of system's malloc() */ |
127 | ||
bd4080b3 | 128 | Malloc_t |
4f63d024 | 129 | Perl_safesysmalloc(MEM_SIZE size) |
8d063cd8 | 130 | { |
1f4d2d4e | 131 | #ifdef ALWAYS_NEED_THX |
54aff467 | 132 | dTHX; |
0cb20dae | 133 | #endif |
bd4080b3 | 134 | Malloc_t ptr; |
9efda33a TC |
135 | |
136 | #ifdef USE_MDH | |
137 | if (size + PERL_MEMORY_DEBUG_HEADER_SIZE < size) | |
138 | goto out_of_memory; | |
a78adc84 | 139 | size += PERL_MEMORY_DEBUG_HEADER_SIZE; |
9efda33a | 140 | #endif |
34de22dd | 141 | #ifdef DEBUGGING |
03c5309f | 142 | if ((SSize_t)size < 0) |
147e3846 | 143 | Perl_croak_nocontext("panic: malloc, size=%" UVuf, (UV) size); |
34de22dd | 144 | #endif |
b001a0d1 FC |
145 | if (!size) size = 1; /* malloc(0) is NASTY on our system */ |
146 | #ifdef PERL_DEBUG_READONLY_COW | |
147 | if ((ptr = mmap(0, size, PROT_READ|PROT_WRITE, | |
148 | MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED) { | |
149 | perror("mmap failed"); | |
150 | abort(); | |
151 | } | |
152 | #else | |
153 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); | |
154 | #endif | |
da927450 | 155 | PERL_ALLOC_CHECK(ptr); |
bd61b366 | 156 | if (ptr != NULL) { |
3f07c2bc | 157 | #ifdef USE_MDH |
7cb608b5 NC |
158 | struct perl_memory_debug_header *const header |
159 | = (struct perl_memory_debug_header *)ptr; | |
9a083ecf NC |
160 | #endif |
161 | ||
162 | #ifdef PERL_POISON | |
7e337ee0 | 163 | PoisonNew(((char *)ptr), size, char); |
9a083ecf | 164 | #endif |
7cb608b5 | 165 | |
9a083ecf | 166 | #ifdef PERL_TRACK_MEMPOOL |
7cb608b5 NC |
167 | header->interpreter = aTHX; |
168 | /* Link us into the list. */ | |
169 | header->prev = &PL_memory_debug_header; | |
170 | header->next = PL_memory_debug_header.next; | |
171 | PL_memory_debug_header.next = header; | |
b001a0d1 | 172 | maybe_protect_rw(header->next); |
7cb608b5 | 173 | header->next->prev = header; |
b001a0d1 FC |
174 | maybe_protect_ro(header->next); |
175 | # ifdef PERL_DEBUG_READONLY_COW | |
176 | header->readonly = 0; | |
cd1541b2 | 177 | # endif |
e8dda941 | 178 | #endif |
3f07c2bc | 179 | #ifdef MDH_HAS_SIZE |
b001a0d1 FC |
180 | header->size = size; |
181 | #endif | |
b033d668 | 182 | ptr = (Malloc_t)((char*)ptr+PERL_MEMORY_DEBUG_HEADER_SIZE); |
147e3846 | 183 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%" UVxf ": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); |
b033d668 DD |
184 | |
185 | } | |
8d063cd8 | 186 | else { |
296f0d56 | 187 | #ifdef USE_MDH |
9efda33a | 188 | out_of_memory: |
296f0d56 TC |
189 | #endif |
190 | { | |
191 | #ifndef ALWAYS_NEED_THX | |
192 | dTHX; | |
193 | #endif | |
194 | if (PL_nomemok) | |
195 | ptr = NULL; | |
196 | else | |
197 | croak_no_mem(); | |
198 | } | |
8d063cd8 | 199 | } |
b033d668 | 200 | return ptr; |
8d063cd8 LW |
201 | } |
202 | ||
f2517201 | 203 | /* paranoid version of system's realloc() */ |
8d063cd8 | 204 | |
bd4080b3 | 205 | Malloc_t |
4f63d024 | 206 | Perl_safesysrealloc(Malloc_t where,MEM_SIZE size) |
8d063cd8 | 207 | { |
1f4d2d4e | 208 | #ifdef ALWAYS_NEED_THX |
54aff467 | 209 | dTHX; |
0cb20dae | 210 | #endif |
bd4080b3 | 211 | Malloc_t ptr; |
b001a0d1 FC |
212 | #ifdef PERL_DEBUG_READONLY_COW |
213 | const MEM_SIZE oldsize = where | |
a78adc84 | 214 | ? ((struct perl_memory_debug_header *)((char *)where - PERL_MEMORY_DEBUG_HEADER_SIZE))->size |
b001a0d1 FC |
215 | : 0; |
216 | #endif | |
8d063cd8 | 217 | |
7614df0c | 218 | if (!size) { |
f2517201 | 219 | safesysfree(where); |
b033d668 | 220 | ptr = NULL; |
7614df0c | 221 | } |
b033d668 DD |
222 | else if (!where) { |
223 | ptr = safesysmalloc(size); | |
224 | } | |
225 | else { | |
3f07c2bc | 226 | #ifdef USE_MDH |
b033d668 | 227 | where = (Malloc_t)((char*)where-PERL_MEMORY_DEBUG_HEADER_SIZE); |
9efda33a TC |
228 | if (size + PERL_MEMORY_DEBUG_HEADER_SIZE < size) |
229 | goto out_of_memory; | |
b033d668 DD |
230 | size += PERL_MEMORY_DEBUG_HEADER_SIZE; |
231 | { | |
232 | struct perl_memory_debug_header *const header | |
233 | = (struct perl_memory_debug_header *)where; | |
7cb608b5 | 234 | |
b001a0d1 | 235 | # ifdef PERL_TRACK_MEMPOOL |
b033d668 DD |
236 | if (header->interpreter != aTHX) { |
237 | Perl_croak_nocontext("panic: realloc from wrong pool, %p!=%p", | |
238 | header->interpreter, aTHX); | |
239 | } | |
240 | assert(header->next->prev == header); | |
241 | assert(header->prev->next == header); | |
cd1541b2 | 242 | # ifdef PERL_POISON |
b033d668 DD |
243 | if (header->size > size) { |
244 | const MEM_SIZE freed_up = header->size - size; | |
245 | char *start_of_freed = ((char *)where) + size; | |
246 | PoisonFree(start_of_freed, freed_up, char); | |
247 | } | |
cd1541b2 | 248 | # endif |
b001a0d1 | 249 | # endif |
3f07c2bc | 250 | # ifdef MDH_HAS_SIZE |
b033d668 | 251 | header->size = size; |
b001a0d1 | 252 | # endif |
b033d668 | 253 | } |
e8dda941 | 254 | #endif |
34de22dd | 255 | #ifdef DEBUGGING |
b033d668 | 256 | if ((SSize_t)size < 0) |
147e3846 | 257 | Perl_croak_nocontext("panic: realloc, size=%" UVuf, (UV)size); |
34de22dd | 258 | #endif |
b001a0d1 | 259 | #ifdef PERL_DEBUG_READONLY_COW |
b033d668 DD |
260 | if ((ptr = mmap(0, size, PROT_READ|PROT_WRITE, |
261 | MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED) { | |
262 | perror("mmap failed"); | |
263 | abort(); | |
264 | } | |
265 | Copy(where,ptr,oldsize < size ? oldsize : size,char); | |
266 | if (munmap(where, oldsize)) { | |
267 | perror("munmap failed"); | |
268 | abort(); | |
269 | } | |
b001a0d1 | 270 | #else |
b033d668 | 271 | ptr = (Malloc_t)PerlMem_realloc(where,size); |
b001a0d1 | 272 | #endif |
b033d668 | 273 | PERL_ALLOC_CHECK(ptr); |
a1d180c4 | 274 | |
4fd0a9b8 NC |
275 | /* MUST do this fixup first, before doing ANYTHING else, as anything else |
276 | might allocate memory/free/move memory, and until we do the fixup, it | |
277 | may well be chasing (and writing to) free memory. */ | |
b033d668 | 278 | if (ptr != NULL) { |
b001a0d1 | 279 | #ifdef PERL_TRACK_MEMPOOL |
b033d668 DD |
280 | struct perl_memory_debug_header *const header |
281 | = (struct perl_memory_debug_header *)ptr; | |
7cb608b5 | 282 | |
9a083ecf | 283 | # ifdef PERL_POISON |
b033d668 DD |
284 | if (header->size < size) { |
285 | const MEM_SIZE fresh = size - header->size; | |
286 | char *start_of_fresh = ((char *)ptr) + size; | |
287 | PoisonNew(start_of_fresh, fresh, char); | |
288 | } | |
9a083ecf NC |
289 | # endif |
290 | ||
b033d668 DD |
291 | maybe_protect_rw(header->next); |
292 | header->next->prev = header; | |
293 | maybe_protect_ro(header->next); | |
294 | maybe_protect_rw(header->prev); | |
295 | header->prev->next = header; | |
296 | maybe_protect_ro(header->prev); | |
b001a0d1 | 297 | #endif |
b033d668 DD |
298 | ptr = (Malloc_t)((char*)ptr+PERL_MEMORY_DEBUG_HEADER_SIZE); |
299 | } | |
4fd0a9b8 NC |
300 | |
301 | /* In particular, must do that fixup above before logging anything via | |
302 | *printf(), as it can reallocate memory, which can cause SEGVs. */ | |
303 | ||
147e3846 KW |
304 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%" UVxf ": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++)); |
305 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%" UVxf ": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); | |
4fd0a9b8 | 306 | |
b033d668 | 307 | if (ptr == NULL) { |
296f0d56 | 308 | #ifdef USE_MDH |
9efda33a | 309 | out_of_memory: |
296f0d56 TC |
310 | #endif |
311 | { | |
312 | #ifndef ALWAYS_NEED_THX | |
313 | dTHX; | |
314 | #endif | |
315 | if (PL_nomemok) | |
316 | ptr = NULL; | |
317 | else | |
318 | croak_no_mem(); | |
319 | } | |
0cb20dae | 320 | } |
8d063cd8 | 321 | } |
b033d668 | 322 | return ptr; |
8d063cd8 LW |
323 | } |
324 | ||
f2517201 | 325 | /* safe version of system's free() */ |
8d063cd8 | 326 | |
54310121 | 327 | Free_t |
4f63d024 | 328 | Perl_safesysfree(Malloc_t where) |
8d063cd8 | 329 | { |
79a92154 | 330 | #ifdef ALWAYS_NEED_THX |
54aff467 | 331 | dTHX; |
155aba94 | 332 | #endif |
147e3846 | 333 | DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%" UVxf ": (%05ld) free\n",PTR2UV(where),(long)PL_an++)); |
378cc40b | 334 | if (where) { |
3f07c2bc | 335 | #ifdef USE_MDH |
6edcbed6 | 336 | Malloc_t where_intrn = (Malloc_t)((char*)where-PERL_MEMORY_DEBUG_HEADER_SIZE); |
cd1541b2 | 337 | { |
7cb608b5 | 338 | struct perl_memory_debug_header *const header |
6edcbed6 | 339 | = (struct perl_memory_debug_header *)where_intrn; |
7cb608b5 | 340 | |
3f07c2bc | 341 | # ifdef MDH_HAS_SIZE |
b001a0d1 FC |
342 | const MEM_SIZE size = header->size; |
343 | # endif | |
344 | # ifdef PERL_TRACK_MEMPOOL | |
7cb608b5 | 345 | if (header->interpreter != aTHX) { |
5637ef5b NC |
346 | Perl_croak_nocontext("panic: free from wrong pool, %p!=%p", |
347 | header->interpreter, aTHX); | |
7cb608b5 NC |
348 | } |
349 | if (!header->prev) { | |
cd1541b2 NC |
350 | Perl_croak_nocontext("panic: duplicate free"); |
351 | } | |
5637ef5b NC |
352 | if (!(header->next)) |
353 | Perl_croak_nocontext("panic: bad free, header->next==NULL"); | |
354 | if (header->next->prev != header || header->prev->next != header) { | |
355 | Perl_croak_nocontext("panic: bad free, ->next->prev=%p, " | |
356 | "header=%p, ->prev->next=%p", | |
357 | header->next->prev, header, | |
358 | header->prev->next); | |
cd1541b2 | 359 | } |
7cb608b5 | 360 | /* Unlink us from the chain. */ |
b001a0d1 | 361 | maybe_protect_rw(header->next); |
7cb608b5 | 362 | header->next->prev = header->prev; |
b001a0d1 FC |
363 | maybe_protect_ro(header->next); |
364 | maybe_protect_rw(header->prev); | |
7cb608b5 | 365 | header->prev->next = header->next; |
b001a0d1 FC |
366 | maybe_protect_ro(header->prev); |
367 | maybe_protect_rw(header); | |
7cb608b5 | 368 | # ifdef PERL_POISON |
6edcbed6 | 369 | PoisonNew(where_intrn, size, char); |
cd1541b2 | 370 | # endif |
7cb608b5 NC |
371 | /* Trigger the duplicate free warning. */ |
372 | header->next = NULL; | |
b001a0d1 FC |
373 | # endif |
374 | # ifdef PERL_DEBUG_READONLY_COW | |
6edcbed6 | 375 | if (munmap(where_intrn, size)) { |
b001a0d1 FC |
376 | perror("munmap failed"); |
377 | abort(); | |
378 | } | |
379 | # endif | |
7cb608b5 | 380 | } |
6edcbed6 DD |
381 | #else |
382 | Malloc_t where_intrn = where; | |
383 | #endif /* USE_MDH */ | |
b001a0d1 | 384 | #ifndef PERL_DEBUG_READONLY_COW |
6edcbed6 | 385 | PerlMem_free(where_intrn); |
b001a0d1 | 386 | #endif |
378cc40b | 387 | } |
8d063cd8 LW |
388 | } |
389 | ||
f2517201 | 390 | /* safe version of system's calloc() */ |
1050c9ca | 391 | |
bd4080b3 | 392 | Malloc_t |
4f63d024 | 393 | Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size) |
1050c9ca | 394 | { |
1f4d2d4e | 395 | #ifdef ALWAYS_NEED_THX |
54aff467 | 396 | dTHX; |
0cb20dae | 397 | #endif |
bd4080b3 | 398 | Malloc_t ptr; |
3f07c2bc | 399 | #if defined(USE_MDH) || defined(DEBUGGING) |
ad7244db | 400 | MEM_SIZE total_size = 0; |
4b1123b9 | 401 | #endif |
1050c9ca | 402 | |
ad7244db | 403 | /* Even though calloc() for zero bytes is strange, be robust. */ |
4b1123b9 | 404 | if (size && (count <= MEM_SIZE_MAX / size)) { |
3f07c2bc | 405 | #if defined(USE_MDH) || defined(DEBUGGING) |
ad7244db | 406 | total_size = size * count; |
4b1123b9 NC |
407 | #endif |
408 | } | |
ad7244db | 409 | else |
d1decf2b | 410 | croak_memory_wrap(); |
3f07c2bc | 411 | #ifdef USE_MDH |
a78adc84 DM |
412 | if (PERL_MEMORY_DEBUG_HEADER_SIZE <= MEM_SIZE_MAX - (MEM_SIZE)total_size) |
413 | total_size += PERL_MEMORY_DEBUG_HEADER_SIZE; | |
ad7244db | 414 | else |
d1decf2b | 415 | croak_memory_wrap(); |
ad7244db | 416 | #endif |
1050c9ca | 417 | #ifdef DEBUGGING |
03c5309f | 418 | if ((SSize_t)size < 0 || (SSize_t)count < 0) |
147e3846 | 419 | Perl_croak_nocontext("panic: calloc, size=%" UVuf ", count=%" UVuf, |
5637ef5b | 420 | (UV)size, (UV)count); |
1050c9ca | 421 | #endif |
b001a0d1 FC |
422 | #ifdef PERL_DEBUG_READONLY_COW |
423 | if ((ptr = mmap(0, total_size ? total_size : 1, PROT_READ|PROT_WRITE, | |
424 | MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED) { | |
425 | perror("mmap failed"); | |
426 | abort(); | |
427 | } | |
428 | #elif defined(PERL_TRACK_MEMPOOL) | |
e1a95402 NC |
429 | /* Have to use malloc() because we've added some space for our tracking |
430 | header. */ | |
ad7244db JH |
431 | /* malloc(0) is non-portable. */ |
432 | ptr = (Malloc_t)PerlMem_malloc(total_size ? total_size : 1); | |
e1a95402 NC |
433 | #else |
434 | /* Use calloc() because it might save a memset() if the memory is fresh | |
435 | and clean from the OS. */ | |
ad7244db JH |
436 | if (count && size) |
437 | ptr = (Malloc_t)PerlMem_calloc(count, size); | |
438 | else /* calloc(0) is non-portable. */ | |
439 | ptr = (Malloc_t)PerlMem_calloc(count ? count : 1, size ? size : 1); | |
e8dda941 | 440 | #endif |
da927450 | 441 | PERL_ALLOC_CHECK(ptr); |
147e3846 | 442 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%" UVxf ": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)total_size)); |
bd61b366 | 443 | if (ptr != NULL) { |
3f07c2bc | 444 | #ifdef USE_MDH |
7cb608b5 NC |
445 | { |
446 | struct perl_memory_debug_header *const header | |
447 | = (struct perl_memory_debug_header *)ptr; | |
448 | ||
b001a0d1 | 449 | # ifndef PERL_DEBUG_READONLY_COW |
e1a95402 | 450 | memset((void*)ptr, 0, total_size); |
b001a0d1 FC |
451 | # endif |
452 | # ifdef PERL_TRACK_MEMPOOL | |
7cb608b5 NC |
453 | header->interpreter = aTHX; |
454 | /* Link us into the list. */ | |
455 | header->prev = &PL_memory_debug_header; | |
456 | header->next = PL_memory_debug_header.next; | |
457 | PL_memory_debug_header.next = header; | |
b001a0d1 | 458 | maybe_protect_rw(header->next); |
7cb608b5 | 459 | header->next->prev = header; |
b001a0d1 FC |
460 | maybe_protect_ro(header->next); |
461 | # ifdef PERL_DEBUG_READONLY_COW | |
462 | header->readonly = 0; | |
463 | # endif | |
464 | # endif | |
3f07c2bc | 465 | # ifdef MDH_HAS_SIZE |
e1a95402 | 466 | header->size = total_size; |
cd1541b2 | 467 | # endif |
a78adc84 | 468 | ptr = (Malloc_t)((char*)ptr+PERL_MEMORY_DEBUG_HEADER_SIZE); |
7cb608b5 | 469 | } |
e8dda941 | 470 | #endif |
1050c9ca | 471 | return ptr; |
472 | } | |
0cb20dae | 473 | else { |
1f4d2d4e | 474 | #ifndef ALWAYS_NEED_THX |
0cb20dae NC |
475 | dTHX; |
476 | #endif | |
477 | if (PL_nomemok) | |
478 | return NULL; | |
4cbe3a7d | 479 | croak_no_mem(); |
0cb20dae | 480 | } |
1050c9ca | 481 | } |
482 | ||
cae6d0e5 GS |
483 | /* These must be defined when not using Perl's malloc for binary |
484 | * compatibility */ | |
485 | ||
486 | #ifndef MYMALLOC | |
487 | ||
488 | Malloc_t Perl_malloc (MEM_SIZE nbytes) | |
489 | { | |
20b7effb JH |
490 | #ifdef PERL_IMPLICIT_SYS |
491 | dTHX; | |
492 | #endif | |
077a72a9 | 493 | return (Malloc_t)PerlMem_malloc(nbytes); |
cae6d0e5 GS |
494 | } |
495 | ||
496 | Malloc_t Perl_calloc (MEM_SIZE elements, MEM_SIZE size) | |
497 | { | |
20b7effb JH |
498 | #ifdef PERL_IMPLICIT_SYS |
499 | dTHX; | |
500 | #endif | |
077a72a9 | 501 | return (Malloc_t)PerlMem_calloc(elements, size); |
cae6d0e5 GS |
502 | } |
503 | ||
504 | Malloc_t Perl_realloc (Malloc_t where, MEM_SIZE nbytes) | |
505 | { | |
20b7effb JH |
506 | #ifdef PERL_IMPLICIT_SYS |
507 | dTHX; | |
508 | #endif | |
077a72a9 | 509 | return (Malloc_t)PerlMem_realloc(where, nbytes); |
cae6d0e5 GS |
510 | } |
511 | ||
512 | Free_t Perl_mfree (Malloc_t where) | |
513 | { | |
20b7effb JH |
514 | #ifdef PERL_IMPLICIT_SYS |
515 | dTHX; | |
516 | #endif | |
cae6d0e5 GS |
517 | PerlMem_free(where); |
518 | } | |
519 | ||
520 | #endif | |
521 | ||
19e16554 DM |
522 | /* copy a string up to some (non-backslashed) delimiter, if any. |
523 | * With allow_escape, converts \<delimiter> to <delimiter>, while leaves | |
524 | * \<non-delimiter> as-is. | |
525 | * Returns the position in the src string of the closing delimiter, if | |
526 | * any, or returns fromend otherwise. | |
527 | * This is the internal implementation for Perl_delimcpy and | |
528 | * Perl_delimcpy_no_escape. | |
529 | */ | |
8d063cd8 | 530 | |
ba0a4150 | 531 | static char * |
31ee10f1 | 532 | S_delimcpy_intern(char *to, const char *toend, const char *from, |
ba0a4150 FC |
533 | const char *fromend, int delim, I32 *retlen, |
534 | const bool allow_escape) | |
8d063cd8 | 535 | { |
eb578fdb | 536 | I32 tolen; |
35da51f7 | 537 | |
7918f24d NC |
538 | PERL_ARGS_ASSERT_DELIMCPY; |
539 | ||
fc36a67e | 540 | for (tolen = 0; from < fromend; from++, tolen++) { |
19e16554 | 541 | if (allow_escape && *from == '\\' && from + 1 < fromend) { |
35da51f7 | 542 | if (from[1] != delim) { |
fc36a67e | 543 | if (to < toend) |
544 | *to++ = *from; | |
545 | tolen++; | |
fc36a67e | 546 | } |
35da51f7 | 547 | from++; |
378cc40b | 548 | } |
bedebaa5 | 549 | else if (*from == delim) |
8d063cd8 | 550 | break; |
fc36a67e | 551 | if (to < toend) |
552 | *to++ = *from; | |
8d063cd8 | 553 | } |
bedebaa5 CS |
554 | if (to < toend) |
555 | *to = '\0'; | |
fc36a67e | 556 | *retlen = tolen; |
73d840c0 | 557 | return (char *)from; |
8d063cd8 LW |
558 | } |
559 | ||
ba0a4150 FC |
560 | char * |
561 | Perl_delimcpy(char *to, const char *toend, const char *from, const char *fromend, int delim, I32 *retlen) | |
562 | { | |
563 | PERL_ARGS_ASSERT_DELIMCPY; | |
564 | ||
31ee10f1 | 565 | return S_delimcpy_intern(to, toend, from, fromend, delim, retlen, 1); |
ba0a4150 FC |
566 | } |
567 | ||
568 | char * | |
569 | Perl_delimcpy_no_escape(char *to, const char *toend, const char *from, | |
570 | const char *fromend, int delim, I32 *retlen) | |
571 | { | |
572 | PERL_ARGS_ASSERT_DELIMCPY_NO_ESCAPE; | |
573 | ||
31ee10f1 | 574 | return S_delimcpy_intern(to, toend, from, fromend, delim, retlen, 0); |
ba0a4150 FC |
575 | } |
576 | ||
fcfc5a27 KW |
577 | /* |
578 | =head1 Miscellaneous Functions | |
579 | ||
580 | =for apidoc Am|char *|ninstr|char * big|char * bigend|char * little|char * little_end | |
581 | ||
582 | Find the first (leftmost) occurrence of a sequence of bytes within another | |
583 | sequence. This is the Perl version of C<strstr()>, extended to handle | |
584 | arbitrary sequences, potentially containing embedded C<NUL> characters (C<NUL> | |
585 | is what the initial C<n> in the function name stands for; some systems have an | |
586 | equivalent, C<memmem()>, but with a somewhat different API). | |
587 | ||
588 | Another way of thinking about this function is finding a needle in a haystack. | |
589 | C<big> points to the first byte in the haystack. C<big_end> points to one byte | |
590 | beyond the final byte in the haystack. C<little> points to the first byte in | |
591 | the needle. C<little_end> points to one byte beyond the final byte in the | |
592 | needle. All the parameters must be non-C<NULL>. | |
593 | ||
594 | The function returns C<NULL> if there is no occurrence of C<little> within | |
595 | C<big>. If C<little> is the empty string, C<big> is returned. | |
596 | ||
597 | Because this function operates at the byte level, and because of the inherent | |
598 | characteristics of UTF-8 (or UTF-EBCDIC), it will work properly if both the | |
599 | needle and the haystack are strings with the same UTF-8ness, but not if the | |
600 | UTF-8ness differs. | |
601 | ||
602 | =cut | |
603 | ||
604 | */ | |
a687059c LW |
605 | |
606 | char * | |
04c9e624 | 607 | Perl_ninstr(const char *big, const char *bigend, const char *little, const char *lend) |
8d063cd8 | 608 | { |
7918f24d | 609 | PERL_ARGS_ASSERT_NINSTR; |
b8070b07 KW |
610 | |
611 | #ifdef HAS_MEMMEM | |
612 | return ninstr(big, bigend, little, lend); | |
613 | #else | |
614 | ||
4c8626be GA |
615 | if (little >= lend) |
616 | return (char*)big; | |
617 | { | |
8ba22ff4 | 618 | const char first = *little; |
8ba22ff4 | 619 | bigend -= lend - little++; |
4c8626be GA |
620 | OUTER: |
621 | while (big <= bigend) { | |
b0ca24ee | 622 | if (*big++ == first) { |
19742f39 | 623 | const char *s, *x; |
b0ca24ee JH |
624 | for (x=big,s=little; s < lend; x++,s++) { |
625 | if (*s != *x) | |
626 | goto OUTER; | |
627 | } | |
628 | return (char*)(big-1); | |
4c8626be | 629 | } |
4c8626be | 630 | } |
378cc40b | 631 | } |
bd61b366 | 632 | return NULL; |
b8070b07 KW |
633 | |
634 | #endif | |
635 | ||
a687059c LW |
636 | } |
637 | ||
fcfc5a27 KW |
638 | /* |
639 | =head1 Miscellaneous Functions | |
640 | ||
641 | =for apidoc Am|char *|rninstr|char * big|char * bigend|char * little|char * little_end | |
642 | ||
643 | Like C<L</ninstr>>, but instead finds the final (rightmost) occurrence of a | |
644 | sequence of bytes within another sequence, returning C<NULL> if there is no | |
645 | such occurrence. | |
646 | ||
647 | =cut | |
648 | ||
649 | */ | |
a687059c LW |
650 | |
651 | char * | |
5aaab254 | 652 | Perl_rninstr(const char *big, const char *bigend, const char *little, const char *lend) |
a687059c | 653 | { |
eb578fdb KW |
654 | const char *bigbeg; |
655 | const I32 first = *little; | |
656 | const char * const littleend = lend; | |
a687059c | 657 | |
7918f24d NC |
658 | PERL_ARGS_ASSERT_RNINSTR; |
659 | ||
260d78c9 | 660 | if (little >= littleend) |
08105a92 | 661 | return (char*)bigend; |
a687059c LW |
662 | bigbeg = big; |
663 | big = bigend - (littleend - little++); | |
664 | while (big >= bigbeg) { | |
eb578fdb | 665 | const char *s, *x; |
a687059c LW |
666 | if (*big-- != first) |
667 | continue; | |
668 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
4fc877ac | 669 | if (*s != *x) |
a687059c | 670 | break; |
4fc877ac AL |
671 | else { |
672 | x++; | |
673 | s++; | |
a687059c LW |
674 | } |
675 | } | |
676 | if (s >= littleend) | |
08105a92 | 677 | return (char*)(big+1); |
378cc40b | 678 | } |
bd61b366 | 679 | return NULL; |
378cc40b | 680 | } |
a687059c | 681 | |
cf93c79d IZ |
682 | /* As a space optimization, we do not compile tables for strings of length |
683 | 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are | |
684 | special-cased in fbm_instr(). | |
685 | ||
686 | If FBMcf_TAIL, the table is created as if the string has a trailing \n. */ | |
687 | ||
954c1994 | 688 | /* |
ccfc67b7 JH |
689 | =head1 Miscellaneous Functions |
690 | ||
954c1994 GS |
691 | =for apidoc fbm_compile |
692 | ||
796b6530 | 693 | Analyses the string in order to make fast searches on it using C<fbm_instr()> |
954c1994 GS |
694 | -- the Boyer-Moore algorithm. |
695 | ||
696 | =cut | |
697 | */ | |
698 | ||
378cc40b | 699 | void |
7506f9c3 | 700 | Perl_fbm_compile(pTHX_ SV *sv, U32 flags) |
378cc40b | 701 | { |
eb578fdb | 702 | const U8 *s; |
ea725ce6 | 703 | STRLEN i; |
0b71040e | 704 | STRLEN len; |
79072805 | 705 | U32 frequency = 256; |
2bda37ba | 706 | MAGIC *mg; |
00cccd05 | 707 | PERL_DEB( STRLEN rarest = 0 ); |
79072805 | 708 | |
7918f24d NC |
709 | PERL_ARGS_ASSERT_FBM_COMPILE; |
710 | ||
948d2370 | 711 | if (isGV_with_GP(sv) || SvROK(sv)) |
4265b45d NC |
712 | return; |
713 | ||
9402563a NC |
714 | if (SvVALID(sv)) |
715 | return; | |
716 | ||
c517dc2b | 717 | if (flags & FBMcf_TAIL) { |
890ce7af | 718 | MAGIC * const mg = SvUTF8(sv) && SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : NULL; |
396482e1 | 719 | sv_catpvs(sv, "\n"); /* Taken into account in fbm_instr() */ |
c517dc2b JH |
720 | if (mg && mg->mg_len >= 0) |
721 | mg->mg_len++; | |
722 | } | |
11609d9c | 723 | if (!SvPOK(sv) || SvNIOKp(sv)) |
66379c06 FC |
724 | s = (U8*)SvPV_force_mutable(sv, len); |
725 | else s = (U8 *)SvPV_mutable(sv, len); | |
d1be9408 | 726 | if (len == 0) /* TAIL might be on a zero-length string. */ |
cf93c79d | 727 | return; |
c13a5c80 | 728 | SvUPGRADE(sv, SVt_PVMG); |
78d0cf80 | 729 | SvIOK_off(sv); |
8eeaf79a | 730 | SvNOK_off(sv); |
2bda37ba | 731 | |
a5c7cb08 | 732 | /* add PERL_MAGIC_bm magic holding the FBM lookup table */ |
2bda37ba NC |
733 | |
734 | assert(!mg_find(sv, PERL_MAGIC_bm)); | |
735 | mg = sv_magicext(sv, NULL, PERL_MAGIC_bm, &PL_vtbl_bm, NULL, 0); | |
736 | assert(mg); | |
737 | ||
02128f11 | 738 | if (len > 2) { |
21aeb718 NC |
739 | /* Shorter strings are special-cased in Perl_fbm_instr(), and don't use |
740 | the BM table. */ | |
66a1b24b | 741 | const U8 mlen = (len>255) ? 255 : (U8)len; |
2bda37ba | 742 | const unsigned char *const sb = s + len - mlen; /* first char (maybe) */ |
eb578fdb | 743 | U8 *table; |
cf93c79d | 744 | |
2bda37ba | 745 | Newx(table, 256, U8); |
7506f9c3 | 746 | memset((void*)table, mlen, 256); |
2bda37ba NC |
747 | mg->mg_ptr = (char *)table; |
748 | mg->mg_len = 256; | |
749 | ||
750 | s += len - 1; /* last char */ | |
02128f11 | 751 | i = 0; |
cf93c79d IZ |
752 | while (s >= sb) { |
753 | if (table[*s] == mlen) | |
7506f9c3 | 754 | table[*s] = (U8)i; |
cf93c79d IZ |
755 | s--, i++; |
756 | } | |
378cc40b | 757 | } |
378cc40b | 758 | |
9cbe880b | 759 | s = (const unsigned char*)(SvPVX_const(sv)); /* deeper magic */ |
bbce6d69 | 760 | for (i = 0; i < len; i++) { |
22c35a8c | 761 | if (PL_freq[s[i]] < frequency) { |
00cccd05 | 762 | PERL_DEB( rarest = i ); |
22c35a8c | 763 | frequency = PL_freq[s[i]]; |
378cc40b LW |
764 | } |
765 | } | |
cf93c79d | 766 | BmUSEFUL(sv) = 100; /* Initial value */ |
b4204fb6 | 767 | ((XPVNV*)SvANY(sv))->xnv_u.xnv_bm_tail = cBOOL(flags & FBMcf_TAIL); |
147e3846 | 768 | DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %" UVuf "\n", |
d80cf470 | 769 | s[rarest], (UV)rarest)); |
378cc40b LW |
770 | } |
771 | ||
cf93c79d | 772 | |
954c1994 GS |
773 | /* |
774 | =for apidoc fbm_instr | |
775 | ||
3f4963df | 776 | Returns the location of the SV in the string delimited by C<big> and |
41c8d07a DM |
777 | C<bigend> (C<bigend>) is the char following the last char). |
778 | It returns C<NULL> if the string can't be found. The C<sv> | |
796b6530 | 779 | does not have to be C<fbm_compiled>, but the search will not be as fast |
954c1994 GS |
780 | then. |
781 | ||
782 | =cut | |
41c8d07a DM |
783 | |
784 | If SvTAIL(littlestr) is true, a fake "\n" was appended to to the string | |
785 | during FBM compilation due to FBMcf_TAIL in flags. It indicates that | |
786 | the littlestr must be anchored to the end of bigstr (or to any \n if | |
787 | FBMrf_MULTILINE). | |
788 | ||
789 | E.g. The regex compiler would compile /abc/ to a littlestr of "abc", | |
790 | while /abc$/ compiles to "abc\n" with SvTAIL() true. | |
791 | ||
792 | A littlestr of "abc", !SvTAIL matches as /abc/; | |
793 | a littlestr of "ab\n", SvTAIL matches as: | |
794 | without FBMrf_MULTILINE: /ab\n?\z/ | |
795 | with FBMrf_MULTILINE: /ab\n/ || /ab\z/; | |
796 | ||
797 | (According to Ilya from 1999; I don't know if this is still true, DAPM 2015): | |
798 | "If SvTAIL is actually due to \Z or \z, this gives false positives | |
799 | if multiline". | |
954c1994 GS |
800 | */ |
801 | ||
41c8d07a | 802 | |
378cc40b | 803 | char * |
5aaab254 | 804 | Perl_fbm_instr(pTHX_ unsigned char *big, unsigned char *bigend, SV *littlestr, U32 flags) |
378cc40b | 805 | { |
eb578fdb | 806 | unsigned char *s; |
cf93c79d | 807 | STRLEN l; |
eb578fdb KW |
808 | const unsigned char *little = (const unsigned char *)SvPV_const(littlestr,l); |
809 | STRLEN littlelen = l; | |
810 | const I32 multiline = flags & FBMrf_MULTILINE; | |
4e8879f3 DM |
811 | bool valid = SvVALID(littlestr); |
812 | bool tail = valid ? cBOOL(SvTAIL(littlestr)) : FALSE; | |
cf93c79d | 813 | |
7918f24d NC |
814 | PERL_ARGS_ASSERT_FBM_INSTR; |
815 | ||
bb152a4b DM |
816 | assert(bigend >= big); |
817 | ||
eb160463 | 818 | if ((STRLEN)(bigend - big) < littlelen) { |
e08d24ff | 819 | if ( tail |
eb160463 | 820 | && ((STRLEN)(bigend - big) == littlelen - 1) |
a1d180c4 | 821 | && (littlelen == 1 |
12ae5dfc | 822 | || (*big == *little && |
27da23d5 | 823 | memEQ((char *)big, (char *)little, littlelen - 1)))) |
cf93c79d | 824 | return (char*)big; |
bd61b366 | 825 | return NULL; |
cf93c79d | 826 | } |
378cc40b | 827 | |
21aeb718 NC |
828 | switch (littlelen) { /* Special cases for 0, 1 and 2 */ |
829 | case 0: | |
830 | return (char*)big; /* Cannot be SvTAIL! */ | |
41c8d07a | 831 | |
21aeb718 | 832 | case 1: |
e08d24ff | 833 | if (tail && !multiline) /* Anchor only! */ |
147f21b5 DM |
834 | /* [-1] is safe because we know that bigend != big. */ |
835 | return (char *) (bigend - (bigend[-1] == '\n')); | |
836 | ||
837 | s = (unsigned char *)memchr((void*)big, *little, bigend-big); | |
838 | if (s) | |
839 | return (char *)s; | |
e08d24ff | 840 | if (tail) |
cf93c79d | 841 | return (char *) bigend; |
bd61b366 | 842 | return NULL; |
41c8d07a | 843 | |
21aeb718 | 844 | case 2: |
e08d24ff | 845 | if (tail && !multiline) { |
147f21b5 DM |
846 | /* a littlestr with SvTAIL must be of the form "X\n" (where X |
847 | * is a single char). It is anchored, and can only match | |
848 | * "....X\n" or "....X" */ | |
849 | if (bigend[-2] == *little && bigend[-1] == '\n') | |
cf93c79d IZ |
850 | return (char*)bigend - 2; |
851 | if (bigend[-1] == *little) | |
852 | return (char*)bigend - 1; | |
bd61b366 | 853 | return NULL; |
cf93c79d | 854 | } |
147f21b5 | 855 | |
cf93c79d | 856 | { |
147f21b5 DM |
857 | /* memchr() is likely to be very fast, possibly using whatever |
858 | * hardware support is available, such as checking a whole | |
859 | * cache line in one instruction. | |
860 | * So for a 2 char pattern, calling memchr() is likely to be | |
861 | * faster than running FBM, or rolling our own. The previous | |
862 | * version of this code was roll-your-own which typically | |
863 | * only needed to read every 2nd char, which was good back in | |
864 | * the day, but no longer. | |
865 | */ | |
866 | unsigned char c1 = little[0]; | |
867 | unsigned char c2 = little[1]; | |
868 | ||
869 | /* *** for all this case, bigend points to the last char, | |
870 | * not the trailing \0: this makes the conditions slightly | |
871 | * simpler */ | |
872 | bigend--; | |
873 | s = big; | |
874 | if (c1 != c2) { | |
875 | while (s < bigend) { | |
876 | /* do a quick test for c1 before calling memchr(); | |
877 | * this avoids the expensive fn call overhead when | |
878 | * there are lots of c1's */ | |
879 | if (LIKELY(*s != c1)) { | |
880 | s++; | |
881 | s = (unsigned char *)memchr((void*)s, c1, bigend - s); | |
882 | if (!s) | |
883 | break; | |
884 | } | |
885 | if (s[1] == c2) | |
886 | return (char*)s; | |
887 | ||
888 | /* failed; try searching for c2 this time; that way | |
889 | * we don't go pathologically slow when the string | |
890 | * consists mostly of c1's or vice versa. | |
891 | */ | |
892 | s += 2; | |
893 | if (s > bigend) | |
894 | break; | |
895 | s = (unsigned char *)memchr((void*)s, c2, bigend - s + 1); | |
896 | if (!s) | |
897 | break; | |
898 | if (s[-1] == c1) | |
899 | return (char*)s - 1; | |
900 | } | |
901 | } | |
902 | else { | |
903 | /* c1, c2 the same */ | |
904 | while (s < bigend) { | |
905 | if (s[0] == c1) { | |
906 | got_1char: | |
907 | if (s[1] == c1) | |
908 | return (char*)s; | |
909 | s += 2; | |
910 | } | |
911 | else { | |
912 | s++; | |
913 | s = (unsigned char *)memchr((void*)s, c1, bigend - s); | |
914 | if (!s || s >= bigend) | |
915 | break; | |
916 | goto got_1char; | |
917 | } | |
918 | } | |
919 | } | |
920 | ||
921 | /* failed to find 2 chars; try anchored match at end without | |
922 | * the \n */ | |
e08d24ff | 923 | if (tail && bigend[0] == little[0]) |
147f21b5 DM |
924 | return (char *)bigend; |
925 | return NULL; | |
926 | } | |
41c8d07a | 927 | |
21aeb718 NC |
928 | default: |
929 | break; /* Only lengths 0 1 and 2 have special-case code. */ | |
d48672a2 | 930 | } |
21aeb718 | 931 | |
e08d24ff | 932 | if (tail && !multiline) { /* tail anchored? */ |
bbce6d69 | 933 | s = bigend - littlelen; |
a1d180c4 | 934 | if (s >= big && bigend[-1] == '\n' && *s == *little |
cf93c79d IZ |
935 | /* Automatically of length > 2 */ |
936 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
7506f9c3 | 937 | { |
bbce6d69 | 938 | return (char*)s; /* how sweet it is */ |
7506f9c3 GS |
939 | } |
940 | if (s[1] == *little | |
941 | && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2)) | |
942 | { | |
cf93c79d | 943 | return (char*)s + 1; /* how sweet it is */ |
7506f9c3 | 944 | } |
bd61b366 | 945 | return NULL; |
02128f11 | 946 | } |
41c8d07a | 947 | |
4e8879f3 | 948 | if (!valid) { |
147f21b5 | 949 | /* not compiled; use Perl_ninstr() instead */ |
c4420975 | 950 | char * const b = ninstr((char*)big,(char*)bigend, |
cf93c79d IZ |
951 | (char*)little, (char*)little + littlelen); |
952 | ||
add424da | 953 | assert(!tail); /* valid => FBM; tail only set on SvVALID SVs */ |
cf93c79d | 954 | return b; |
a687059c | 955 | } |
a1d180c4 | 956 | |
3566a07d NC |
957 | /* Do actual FBM. */ |
958 | if (littlelen > (STRLEN)(bigend - big)) | |
959 | return NULL; | |
960 | ||
961 | { | |
2bda37ba | 962 | const MAGIC *const mg = mg_find(littlestr, PERL_MAGIC_bm); |
eb578fdb | 963 | const unsigned char *oldlittle; |
cf93c79d | 964 | |
316ebaf2 JH |
965 | assert(mg); |
966 | ||
cf93c79d IZ |
967 | --littlelen; /* Last char found by table lookup */ |
968 | ||
969 | s = big + littlelen; | |
970 | little += littlelen; /* last char */ | |
971 | oldlittle = little; | |
972 | if (s < bigend) { | |
316ebaf2 | 973 | const unsigned char * const table = (const unsigned char *) mg->mg_ptr; |
147f21b5 | 974 | const unsigned char lastc = *little; |
eb578fdb | 975 | I32 tmp; |
cf93c79d IZ |
976 | |
977 | top2: | |
7506f9c3 | 978 | if ((tmp = table[*s])) { |
147f21b5 DM |
979 | /* *s != lastc; earliest position it could match now is |
980 | * tmp slots further on */ | |
981 | if ((s += tmp) >= bigend) | |
982 | goto check_end; | |
983 | if (LIKELY(*s != lastc)) { | |
984 | s++; | |
985 | s = (unsigned char *)memchr((void*)s, lastc, bigend - s); | |
986 | if (!s) { | |
987 | s = bigend; | |
988 | goto check_end; | |
989 | } | |
990 | goto top2; | |
991 | } | |
cf93c79d | 992 | } |
147f21b5 DM |
993 | |
994 | ||
995 | /* hand-rolled strncmp(): less expensive than calling the | |
996 | * real function (maybe???) */ | |
997 | { | |
eb578fdb | 998 | unsigned char * const olds = s; |
cf93c79d IZ |
999 | |
1000 | tmp = littlelen; | |
1001 | ||
1002 | while (tmp--) { | |
1003 | if (*--s == *--little) | |
1004 | continue; | |
cf93c79d IZ |
1005 | s = olds + 1; /* here we pay the price for failure */ |
1006 | little = oldlittle; | |
1007 | if (s < bigend) /* fake up continue to outer loop */ | |
1008 | goto top2; | |
1009 | goto check_end; | |
1010 | } | |
1011 | return (char *)s; | |
a687059c | 1012 | } |
378cc40b | 1013 | } |
cf93c79d | 1014 | check_end: |
c8029a41 | 1015 | if ( s == bigend |
e08d24ff | 1016 | && tail |
12ae5dfc JH |
1017 | && memEQ((char *)(bigend - littlelen), |
1018 | (char *)(oldlittle - littlelen), littlelen) ) | |
cf93c79d | 1019 | return (char*)bigend - littlelen; |
bd61b366 | 1020 | return NULL; |
378cc40b | 1021 | } |
378cc40b LW |
1022 | } |
1023 | ||
8d063cd8 LW |
1024 | /* copy a string to a safe spot */ |
1025 | ||
954c1994 | 1026 | /* |
ccfc67b7 JH |
1027 | =head1 Memory Management |
1028 | ||
954c1994 GS |
1029 | =for apidoc savepv |
1030 | ||
72d33970 FC |
1031 | Perl's version of C<strdup()>. Returns a pointer to a newly allocated |
1032 | string which is a duplicate of C<pv>. The size of the string is | |
30a15352 KW |
1033 | determined by C<strlen()>, which means it may not contain embedded C<NUL> |
1034 | characters and must have a trailing C<NUL>. The memory allocated for the new | |
1035 | string can be freed with the C<Safefree()> function. | |
954c1994 | 1036 | |
0358c255 KW |
1037 | On some platforms, Windows for example, all allocated memory owned by a thread |
1038 | is deallocated when that thread ends. So if you need that not to happen, you | |
1039 | need to use the shared memory functions, such as C<L</savesharedpv>>. | |
1040 | ||
954c1994 GS |
1041 | =cut |
1042 | */ | |
1043 | ||
8d063cd8 | 1044 | char * |
efdfce31 | 1045 | Perl_savepv(pTHX_ const char *pv) |
8d063cd8 | 1046 | { |
96a5add6 | 1047 | PERL_UNUSED_CONTEXT; |
e90e2364 | 1048 | if (!pv) |
bd61b366 | 1049 | return NULL; |
66a1b24b AL |
1050 | else { |
1051 | char *newaddr; | |
1052 | const STRLEN pvlen = strlen(pv)+1; | |
10edeb5d JH |
1053 | Newx(newaddr, pvlen, char); |
1054 | return (char*)memcpy(newaddr, pv, pvlen); | |
66a1b24b | 1055 | } |
8d063cd8 LW |
1056 | } |
1057 | ||
a687059c LW |
1058 | /* same thing but with a known length */ |
1059 | ||
954c1994 GS |
1060 | /* |
1061 | =for apidoc savepvn | |
1062 | ||
72d33970 | 1063 | Perl's version of what C<strndup()> would be if it existed. Returns a |
61a925ed | 1064 | pointer to a newly allocated string which is a duplicate of the first |
72d33970 | 1065 | C<len> bytes from C<pv>, plus a trailing |
6602b933 | 1066 | C<NUL> byte. The memory allocated for |
cbf82dd0 | 1067 | the new string can be freed with the C<Safefree()> function. |
954c1994 | 1068 | |
0358c255 KW |
1069 | On some platforms, Windows for example, all allocated memory owned by a thread |
1070 | is deallocated when that thread ends. So if you need that not to happen, you | |
1071 | need to use the shared memory functions, such as C<L</savesharedpvn>>. | |
1072 | ||
954c1994 GS |
1073 | =cut |
1074 | */ | |
1075 | ||
a687059c | 1076 | char * |
5aaab254 | 1077 | Perl_savepvn(pTHX_ const char *pv, I32 len) |
a687059c | 1078 | { |
eb578fdb | 1079 | char *newaddr; |
96a5add6 | 1080 | PERL_UNUSED_CONTEXT; |
a687059c | 1081 | |
223f01db KW |
1082 | assert(len >= 0); |
1083 | ||
a02a5408 | 1084 | Newx(newaddr,len+1,char); |
92110913 | 1085 | /* Give a meaning to NULL pointer mainly for the use in sv_magic() */ |
efdfce31 | 1086 | if (pv) { |
e90e2364 NC |
1087 | /* might not be null terminated */ |
1088 | newaddr[len] = '\0'; | |
07409e01 | 1089 | return (char *) CopyD(pv,newaddr,len,char); |
92110913 NIS |
1090 | } |
1091 | else { | |
07409e01 | 1092 | return (char *) ZeroD(newaddr,len+1,char); |
92110913 | 1093 | } |
a687059c LW |
1094 | } |
1095 | ||
05ec9bb3 NIS |
1096 | /* |
1097 | =for apidoc savesharedpv | |
1098 | ||
61a925ed AMS |
1099 | A version of C<savepv()> which allocates the duplicate string in memory |
1100 | which is shared between threads. | |
05ec9bb3 NIS |
1101 | |
1102 | =cut | |
1103 | */ | |
1104 | char * | |
efdfce31 | 1105 | Perl_savesharedpv(pTHX_ const char *pv) |
05ec9bb3 | 1106 | { |
eb578fdb | 1107 | char *newaddr; |
490a0e98 | 1108 | STRLEN pvlen; |
dc3bf405 BF |
1109 | |
1110 | PERL_UNUSED_CONTEXT; | |
1111 | ||
e90e2364 | 1112 | if (!pv) |
bd61b366 | 1113 | return NULL; |
e90e2364 | 1114 | |
490a0e98 NC |
1115 | pvlen = strlen(pv)+1; |
1116 | newaddr = (char*)PerlMemShared_malloc(pvlen); | |
e90e2364 | 1117 | if (!newaddr) { |
4cbe3a7d | 1118 | croak_no_mem(); |
05ec9bb3 | 1119 | } |
10edeb5d | 1120 | return (char*)memcpy(newaddr, pv, pvlen); |
05ec9bb3 NIS |
1121 | } |
1122 | ||
2e0de35c | 1123 | /* |
d9095cec NC |
1124 | =for apidoc savesharedpvn |
1125 | ||
1126 | A version of C<savepvn()> which allocates the duplicate string in memory | |
796b6530 | 1127 | which is shared between threads. (With the specific difference that a C<NULL> |
d9095cec NC |
1128 | pointer is not acceptable) |
1129 | ||
1130 | =cut | |
1131 | */ | |
1132 | char * | |
1133 | Perl_savesharedpvn(pTHX_ const char *const pv, const STRLEN len) | |
1134 | { | |
1135 | char *const newaddr = (char*)PerlMemShared_malloc(len + 1); | |
7918f24d | 1136 | |
dc3bf405 | 1137 | PERL_UNUSED_CONTEXT; |
6379d4a9 | 1138 | /* PERL_ARGS_ASSERT_SAVESHAREDPVN; */ |
7918f24d | 1139 | |
d9095cec | 1140 | if (!newaddr) { |
4cbe3a7d | 1141 | croak_no_mem(); |
d9095cec NC |
1142 | } |
1143 | newaddr[len] = '\0'; | |
1144 | return (char*)memcpy(newaddr, pv, len); | |
1145 | } | |
1146 | ||
1147 | /* | |
2e0de35c NC |
1148 | =for apidoc savesvpv |
1149 | ||
6832267f | 1150 | A version of C<savepv()>/C<savepvn()> which gets the string to duplicate from |
2e0de35c NC |
1151 | the passed in SV using C<SvPV()> |
1152 | ||
0358c255 KW |
1153 | On some platforms, Windows for example, all allocated memory owned by a thread |
1154 | is deallocated when that thread ends. So if you need that not to happen, you | |
1155 | need to use the shared memory functions, such as C<L</savesharedsvpv>>. | |
1156 | ||
2e0de35c NC |
1157 | =cut |
1158 | */ | |
1159 | ||
1160 | char * | |
1161 | Perl_savesvpv(pTHX_ SV *sv) | |
1162 | { | |
1163 | STRLEN len; | |
7452cf6a | 1164 | const char * const pv = SvPV_const(sv, len); |
eb578fdb | 1165 | char *newaddr; |
2e0de35c | 1166 | |
7918f24d NC |
1167 | PERL_ARGS_ASSERT_SAVESVPV; |
1168 | ||
26866f99 | 1169 | ++len; |
a02a5408 | 1170 | Newx(newaddr,len,char); |
07409e01 | 1171 | return (char *) CopyD(pv,newaddr,len,char); |
2e0de35c | 1172 | } |
05ec9bb3 | 1173 | |
9dcc53ea Z |
1174 | /* |
1175 | =for apidoc savesharedsvpv | |
1176 | ||
1177 | A version of C<savesharedpv()> which allocates the duplicate string in | |
1178 | memory which is shared between threads. | |
1179 | ||
1180 | =cut | |
1181 | */ | |
1182 | ||
1183 | char * | |
1184 | Perl_savesharedsvpv(pTHX_ SV *sv) | |
1185 | { | |
1186 | STRLEN len; | |
1187 | const char * const pv = SvPV_const(sv, len); | |
1188 | ||
1189 | PERL_ARGS_ASSERT_SAVESHAREDSVPV; | |
1190 | ||
1191 | return savesharedpvn(pv, len); | |
1192 | } | |
05ec9bb3 | 1193 | |
cea2e8a9 | 1194 | /* the SV for Perl_form() and mess() is not kept in an arena */ |
fc36a67e | 1195 | |
76e3520e | 1196 | STATIC SV * |
cea2e8a9 | 1197 | S_mess_alloc(pTHX) |
fc36a67e | 1198 | { |
1199 | SV *sv; | |
1200 | XPVMG *any; | |
1201 | ||
627364f1 | 1202 | if (PL_phase != PERL_PHASE_DESTRUCT) |
84bafc02 | 1203 | return newSVpvs_flags("", SVs_TEMP); |
e72dc28c | 1204 | |
0372dbb6 GS |
1205 | if (PL_mess_sv) |
1206 | return PL_mess_sv; | |
1207 | ||
fc36a67e | 1208 | /* Create as PVMG now, to avoid any upgrading later */ |
a02a5408 JC |
1209 | Newx(sv, 1, SV); |
1210 | Newxz(any, 1, XPVMG); | |
fc36a67e | 1211 | SvFLAGS(sv) = SVt_PVMG; |
1212 | SvANY(sv) = (void*)any; | |
6136c704 | 1213 | SvPV_set(sv, NULL); |
fc36a67e | 1214 | SvREFCNT(sv) = 1 << 30; /* practically infinite */ |
e72dc28c | 1215 | PL_mess_sv = sv; |
fc36a67e | 1216 | return sv; |
1217 | } | |
1218 | ||
c5be433b | 1219 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1220 | char * |
1221 | Perl_form_nocontext(const char* pat, ...) | |
1222 | { | |
1223 | dTHX; | |
c5be433b | 1224 | char *retval; |
cea2e8a9 | 1225 | va_list args; |
7918f24d | 1226 | PERL_ARGS_ASSERT_FORM_NOCONTEXT; |
cea2e8a9 | 1227 | va_start(args, pat); |
c5be433b | 1228 | retval = vform(pat, &args); |
cea2e8a9 | 1229 | va_end(args); |
c5be433b | 1230 | return retval; |
cea2e8a9 | 1231 | } |
c5be433b | 1232 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 | 1233 | |
7c9e965c | 1234 | /* |
ccfc67b7 | 1235 | =head1 Miscellaneous Functions |
7c9e965c JP |
1236 | =for apidoc form |
1237 | ||
1238 | Takes a sprintf-style format pattern and conventional | |
1239 | (non-SV) arguments and returns the formatted string. | |
1240 | ||
1241 | (char *) Perl_form(pTHX_ const char* pat, ...) | |
1242 | ||
1243 | can be used any place a string (char *) is required: | |
1244 | ||
1245 | char * s = Perl_form("%d.%d",major,minor); | |
1246 | ||
1247 | Uses a single private buffer so if you want to format several strings you | |
1248 | must explicitly copy the earlier strings away (and free the copies when you | |
1249 | are done). | |
1250 | ||
1251 | =cut | |
1252 | */ | |
1253 | ||
8990e307 | 1254 | char * |
864dbfa3 | 1255 | Perl_form(pTHX_ const char* pat, ...) |
8990e307 | 1256 | { |
c5be433b | 1257 | char *retval; |
46fc3d4c | 1258 | va_list args; |
7918f24d | 1259 | PERL_ARGS_ASSERT_FORM; |
46fc3d4c | 1260 | va_start(args, pat); |
c5be433b | 1261 | retval = vform(pat, &args); |
46fc3d4c | 1262 | va_end(args); |
c5be433b GS |
1263 | return retval; |
1264 | } | |
1265 | ||
1266 | char * | |
1267 | Perl_vform(pTHX_ const char *pat, va_list *args) | |
1268 | { | |
2d03de9c | 1269 | SV * const sv = mess_alloc(); |
7918f24d | 1270 | PERL_ARGS_ASSERT_VFORM; |
4608196e | 1271 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
e72dc28c | 1272 | return SvPVX(sv); |
46fc3d4c | 1273 | } |
a687059c | 1274 | |
c5df3096 Z |
1275 | /* |
1276 | =for apidoc Am|SV *|mess|const char *pat|... | |
1277 | ||
1278 | Take a sprintf-style format pattern and argument list. These are used to | |
1279 | generate a string message. If the message does not end with a newline, | |
1280 | then it will be extended with some indication of the current location | |
1281 | in the code, as described for L</mess_sv>. | |
1282 | ||
1283 | Normally, the resulting message is returned in a new mortal SV. | |
1284 | During global destruction a single SV may be shared between uses of | |
1285 | this function. | |
1286 | ||
1287 | =cut | |
1288 | */ | |
1289 | ||
5a844595 GS |
1290 | #if defined(PERL_IMPLICIT_CONTEXT) |
1291 | SV * | |
1292 | Perl_mess_nocontext(const char *pat, ...) | |
1293 | { | |
1294 | dTHX; | |
1295 | SV *retval; | |
1296 | va_list args; | |
7918f24d | 1297 | PERL_ARGS_ASSERT_MESS_NOCONTEXT; |
5a844595 GS |
1298 | va_start(args, pat); |
1299 | retval = vmess(pat, &args); | |
1300 | va_end(args); | |
1301 | return retval; | |
1302 | } | |
1303 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1304 | ||
06bf62c7 | 1305 | SV * |
5a844595 GS |
1306 | Perl_mess(pTHX_ const char *pat, ...) |
1307 | { | |
1308 | SV *retval; | |
1309 | va_list args; | |
7918f24d | 1310 | PERL_ARGS_ASSERT_MESS; |
5a844595 GS |
1311 | va_start(args, pat); |
1312 | retval = vmess(pat, &args); | |
1313 | va_end(args); | |
1314 | return retval; | |
1315 | } | |
1316 | ||
25502127 FC |
1317 | const COP* |
1318 | Perl_closest_cop(pTHX_ const COP *cop, const OP *o, const OP *curop, | |
1319 | bool opnext) | |
ae7d165c | 1320 | { |
25502127 FC |
1321 | /* Look for curop starting from o. cop is the last COP we've seen. */ |
1322 | /* opnext means that curop is actually the ->op_next of the op we are | |
1323 | seeking. */ | |
ae7d165c | 1324 | |
7918f24d NC |
1325 | PERL_ARGS_ASSERT_CLOSEST_COP; |
1326 | ||
25502127 FC |
1327 | if (!o || !curop || ( |
1328 | opnext ? o->op_next == curop && o->op_type != OP_SCOPE : o == curop | |
1329 | )) | |
fabdb6c0 | 1330 | return cop; |
ae7d165c PJ |
1331 | |
1332 | if (o->op_flags & OPf_KIDS) { | |
5f66b61c | 1333 | const OP *kid; |
e6dae479 | 1334 | for (kid = cUNOPo->op_first; kid; kid = OpSIBLING(kid)) { |
5f66b61c | 1335 | const COP *new_cop; |
ae7d165c PJ |
1336 | |
1337 | /* If the OP_NEXTSTATE has been optimised away we can still use it | |
1338 | * the get the file and line number. */ | |
1339 | ||
1340 | if (kid->op_type == OP_NULL && kid->op_targ == OP_NEXTSTATE) | |
5f66b61c | 1341 | cop = (const COP *)kid; |
ae7d165c PJ |
1342 | |
1343 | /* Keep searching, and return when we've found something. */ | |
1344 | ||
25502127 | 1345 | new_cop = closest_cop(cop, kid, curop, opnext); |
fabdb6c0 AL |
1346 | if (new_cop) |
1347 | return new_cop; | |
ae7d165c PJ |
1348 | } |
1349 | } | |
1350 | ||
1351 | /* Nothing found. */ | |
1352 | ||
5f66b61c | 1353 | return NULL; |
ae7d165c PJ |
1354 | } |
1355 | ||
c5df3096 Z |
1356 | /* |
1357 | =for apidoc Am|SV *|mess_sv|SV *basemsg|bool consume | |
1358 | ||
1359 | Expands a message, intended for the user, to include an indication of | |
1360 | the current location in the code, if the message does not already appear | |
1361 | to be complete. | |
1362 | ||
1363 | C<basemsg> is the initial message or object. If it is a reference, it | |
1364 | will be used as-is and will be the result of this function. Otherwise it | |
1365 | is used as a string, and if it already ends with a newline, it is taken | |
1366 | to be complete, and the result of this function will be the same string. | |
1367 | If the message does not end with a newline, then a segment such as C<at | |
1368 | foo.pl line 37> will be appended, and possibly other clauses indicating | |
1369 | the current state of execution. The resulting message will end with a | |
1370 | dot and a newline. | |
1371 | ||
1372 | Normally, the resulting message is returned in a new mortal SV. | |
1373 | During global destruction a single SV may be shared between uses of this | |
1374 | function. If C<consume> is true, then the function is permitted (but not | |
1375 | required) to modify and return C<basemsg> instead of allocating a new SV. | |
1376 | ||
1377 | =cut | |
1378 | */ | |
1379 | ||
5a844595 | 1380 | SV * |
c5df3096 | 1381 | Perl_mess_sv(pTHX_ SV *basemsg, bool consume) |
46fc3d4c | 1382 | { |
c5df3096 | 1383 | SV *sv; |
46fc3d4c | 1384 | |
0762e42f | 1385 | #if defined(USE_C_BACKTRACE) && defined(USE_C_BACKTRACE_ON_ERROR) |
470dd224 JH |
1386 | { |
1387 | char *ws; | |
22ff3130 | 1388 | UV wi; |
470dd224 | 1389 | /* The PERL_C_BACKTRACE_ON_WARN must be an integer of one or more. */ |
22ff3130 HS |
1390 | if ((ws = PerlEnv_getenv("PERL_C_BACKTRACE_ON_ERROR")) |
1391 | && grok_atoUV(ws, &wi, NULL) | |
1392 | && wi <= PERL_INT_MAX | |
1393 | ) { | |
1394 | Perl_dump_c_backtrace(aTHX_ Perl_debug_log, (int)wi, 1); | |
470dd224 JH |
1395 | } |
1396 | } | |
1397 | #endif | |
1398 | ||
c5df3096 Z |
1399 | PERL_ARGS_ASSERT_MESS_SV; |
1400 | ||
1401 | if (SvROK(basemsg)) { | |
1402 | if (consume) { | |
1403 | sv = basemsg; | |
1404 | } | |
1405 | else { | |
1406 | sv = mess_alloc(); | |
1407 | sv_setsv(sv, basemsg); | |
1408 | } | |
1409 | return sv; | |
1410 | } | |
1411 | ||
1412 | if (SvPOK(basemsg) && consume) { | |
1413 | sv = basemsg; | |
1414 | } | |
1415 | else { | |
1416 | sv = mess_alloc(); | |
1417 | sv_copypv(sv, basemsg); | |
1418 | } | |
7918f24d | 1419 | |
46fc3d4c | 1420 | if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') { |
ae7d165c PJ |
1421 | /* |
1422 | * Try and find the file and line for PL_op. This will usually be | |
1423 | * PL_curcop, but it might be a cop that has been optimised away. We | |
1424 | * can try to find such a cop by searching through the optree starting | |
1425 | * from the sibling of PL_curcop. | |
1426 | */ | |
1427 | ||
f4c61774 DM |
1428 | if (PL_curcop) { |
1429 | const COP *cop = | |
1430 | closest_cop(PL_curcop, OpSIBLING(PL_curcop), PL_op, FALSE); | |
1431 | if (!cop) | |
1432 | cop = PL_curcop; | |
1433 | ||
1434 | if (CopLINE(cop)) | |
1435 | Perl_sv_catpvf(aTHX_ sv, " at %s line %" IVdf, | |
1436 | OutCopFILE(cop), (IV)CopLINE(cop)); | |
1437 | } | |
1438 | ||
191f87d5 DH |
1439 | /* Seems that GvIO() can be untrustworthy during global destruction. */ |
1440 | if (GvIO(PL_last_in_gv) && (SvTYPE(GvIOp(PL_last_in_gv)) == SVt_PVIO) | |
1441 | && IoLINES(GvIOp(PL_last_in_gv))) | |
1442 | { | |
2748e602 | 1443 | STRLEN l; |
e1ec3a88 | 1444 | const bool line_mode = (RsSIMPLE(PL_rs) && |
2748e602 | 1445 | *SvPV_const(PL_rs,l) == '\n' && l == 1); |
147e3846 | 1446 | Perl_sv_catpvf(aTHX_ sv, ", <%" SVf "> %s %" IVdf, |
3b46b707 BF |
1447 | SVfARG(PL_last_in_gv == PL_argvgv |
1448 | ? &PL_sv_no | |
1449 | : sv_2mortal(newSVhek(GvNAME_HEK(PL_last_in_gv)))), | |
edc2eac3 JH |
1450 | line_mode ? "line" : "chunk", |
1451 | (IV)IoLINES(GvIOp(PL_last_in_gv))); | |
a687059c | 1452 | } |
627364f1 | 1453 | if (PL_phase == PERL_PHASE_DESTRUCT) |
5f66b61c AL |
1454 | sv_catpvs(sv, " during global destruction"); |
1455 | sv_catpvs(sv, ".\n"); | |
a687059c | 1456 | } |
06bf62c7 | 1457 | return sv; |
a687059c LW |
1458 | } |
1459 | ||
c5df3096 Z |
1460 | /* |
1461 | =for apidoc Am|SV *|vmess|const char *pat|va_list *args | |
1462 | ||
1463 | C<pat> and C<args> are a sprintf-style format pattern and encapsulated | |
801caa78 KW |
1464 | argument list, respectively. These are used to generate a string message. If |
1465 | the | |
c5df3096 Z |
1466 | message does not end with a newline, then it will be extended with |
1467 | some indication of the current location in the code, as described for | |
1468 | L</mess_sv>. | |
1469 | ||
1470 | Normally, the resulting message is returned in a new mortal SV. | |
1471 | During global destruction a single SV may be shared between uses of | |
1472 | this function. | |
1473 | ||
1474 | =cut | |
1475 | */ | |
1476 | ||
1477 | SV * | |
1478 | Perl_vmess(pTHX_ const char *pat, va_list *args) | |
1479 | { | |
c5df3096 Z |
1480 | SV * const sv = mess_alloc(); |
1481 | ||
1482 | PERL_ARGS_ASSERT_VMESS; | |
1483 | ||
1484 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); | |
1485 | return mess_sv(sv, 1); | |
1486 | } | |
1487 | ||
7ff03255 | 1488 | void |
7d0994e0 | 1489 | Perl_write_to_stderr(pTHX_ SV* msv) |
7ff03255 SG |
1490 | { |
1491 | IO *io; | |
1492 | MAGIC *mg; | |
1493 | ||
7918f24d NC |
1494 | PERL_ARGS_ASSERT_WRITE_TO_STDERR; |
1495 | ||
7ff03255 SG |
1496 | if (PL_stderrgv && SvREFCNT(PL_stderrgv) |
1497 | && (io = GvIO(PL_stderrgv)) | |
daba3364 | 1498 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
36925d9e | 1499 | Perl_magic_methcall(aTHX_ MUTABLE_SV(io), mg, SV_CONST(PRINT), |
d1d7a15d | 1500 | G_SCALAR | G_DISCARD | G_WRITING_TO_STDERR, 1, msv); |
7ff03255 | 1501 | else { |
53c1dcc0 | 1502 | PerlIO * const serr = Perl_error_log; |
7ff03255 | 1503 | |
83c55556 | 1504 | do_print(msv, serr); |
7ff03255 | 1505 | (void)PerlIO_flush(serr); |
7ff03255 SG |
1506 | } |
1507 | } | |
1508 | ||
c5df3096 Z |
1509 | /* |
1510 | =head1 Warning and Dieing | |
1511 | */ | |
1512 | ||
1513 | /* Common code used in dieing and warning */ | |
1514 | ||
1515 | STATIC SV * | |
1516 | S_with_queued_errors(pTHX_ SV *ex) | |
1517 | { | |
1518 | PERL_ARGS_ASSERT_WITH_QUEUED_ERRORS; | |
1519 | if (PL_errors && SvCUR(PL_errors) && !SvROK(ex)) { | |
1520 | sv_catsv(PL_errors, ex); | |
1521 | ex = sv_mortalcopy(PL_errors); | |
1522 | SvCUR_set(PL_errors, 0); | |
1523 | } | |
1524 | return ex; | |
1525 | } | |
3ab1ac99 | 1526 | |
46d9c920 | 1527 | STATIC bool |
c5df3096 | 1528 | S_invoke_exception_hook(pTHX_ SV *ex, bool warn) |
63315e18 NC |
1529 | { |
1530 | HV *stash; | |
1531 | GV *gv; | |
1532 | CV *cv; | |
46d9c920 NC |
1533 | SV **const hook = warn ? &PL_warnhook : &PL_diehook; |
1534 | /* sv_2cv might call Perl_croak() or Perl_warner() */ | |
1535 | SV * const oldhook = *hook; | |
1536 | ||
c5df3096 Z |
1537 | if (!oldhook) |
1538 | return FALSE; | |
63315e18 | 1539 | |
63315e18 | 1540 | ENTER; |
46d9c920 NC |
1541 | SAVESPTR(*hook); |
1542 | *hook = NULL; | |
1543 | cv = sv_2cv(oldhook, &stash, &gv, 0); | |
63315e18 NC |
1544 | LEAVE; |
1545 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
1546 | dSP; | |
c5df3096 | 1547 | SV *exarg; |
63315e18 NC |
1548 | |
1549 | ENTER; | |
2782061f | 1550 | save_re_context(); |
46d9c920 NC |
1551 | if (warn) { |
1552 | SAVESPTR(*hook); | |
1553 | *hook = NULL; | |
1554 | } | |
c5df3096 Z |
1555 | exarg = newSVsv(ex); |
1556 | SvREADONLY_on(exarg); | |
1557 | SAVEFREESV(exarg); | |
63315e18 | 1558 | |
46d9c920 | 1559 | PUSHSTACKi(warn ? PERLSI_WARNHOOK : PERLSI_DIEHOOK); |
63315e18 | 1560 | PUSHMARK(SP); |
c5df3096 | 1561 | XPUSHs(exarg); |
63315e18 | 1562 | PUTBACK; |
daba3364 | 1563 | call_sv(MUTABLE_SV(cv), G_DISCARD); |
63315e18 NC |
1564 | POPSTACK; |
1565 | LEAVE; | |
46d9c920 | 1566 | return TRUE; |
63315e18 | 1567 | } |
46d9c920 | 1568 | return FALSE; |
63315e18 NC |
1569 | } |
1570 | ||
c5df3096 Z |
1571 | /* |
1572 | =for apidoc Am|OP *|die_sv|SV *baseex | |
e07360fa | 1573 | |
c5df3096 Z |
1574 | Behaves the same as L</croak_sv>, except for the return type. |
1575 | It should be used only where the C<OP *> return type is required. | |
1576 | The function never actually returns. | |
e07360fa | 1577 | |
c5df3096 Z |
1578 | =cut |
1579 | */ | |
e07360fa | 1580 | |
f8d5a522 DD |
1581 | #ifdef _MSC_VER |
1582 | # pragma warning( push ) | |
1583 | # pragma warning( disable : 4646 ) /* warning C4646: function declared with | |
1584 | __declspec(noreturn) has non-void return type */ | |
1585 | # pragma warning( disable : 4645 ) /* warning C4645: function declared with | |
1586 | __declspec(noreturn) has a return statement */ | |
1587 | #endif | |
c5df3096 Z |
1588 | OP * |
1589 | Perl_die_sv(pTHX_ SV *baseex) | |
36477c24 | 1590 | { |
c5df3096 Z |
1591 | PERL_ARGS_ASSERT_DIE_SV; |
1592 | croak_sv(baseex); | |
e5964223 | 1593 | /* NOTREACHED */ |
117af67d | 1594 | NORETURN_FUNCTION_END; |
36477c24 | 1595 | } |
f8d5a522 DD |
1596 | #ifdef _MSC_VER |
1597 | # pragma warning( pop ) | |
1598 | #endif | |
36477c24 | 1599 | |
c5df3096 Z |
1600 | /* |
1601 | =for apidoc Am|OP *|die|const char *pat|... | |
1602 | ||
1603 | Behaves the same as L</croak>, except for the return type. | |
1604 | It should be used only where the C<OP *> return type is required. | |
1605 | The function never actually returns. | |
1606 | ||
1607 | =cut | |
1608 | */ | |
1609 | ||
c5be433b | 1610 | #if defined(PERL_IMPLICIT_CONTEXT) |
f8d5a522 DD |
1611 | #ifdef _MSC_VER |
1612 | # pragma warning( push ) | |
1613 | # pragma warning( disable : 4646 ) /* warning C4646: function declared with | |
1614 | __declspec(noreturn) has non-void return type */ | |
1615 | # pragma warning( disable : 4645 ) /* warning C4645: function declared with | |
1616 | __declspec(noreturn) has a return statement */ | |
1617 | #endif | |
cea2e8a9 GS |
1618 | OP * |
1619 | Perl_die_nocontext(const char* pat, ...) | |
a687059c | 1620 | { |
cea2e8a9 | 1621 | dTHX; |
a687059c | 1622 | va_list args; |
cea2e8a9 | 1623 | va_start(args, pat); |
c5df3096 | 1624 | vcroak(pat, &args); |
e5964223 | 1625 | NOT_REACHED; /* NOTREACHED */ |
cea2e8a9 | 1626 | va_end(args); |
117af67d | 1627 | NORETURN_FUNCTION_END; |
cea2e8a9 | 1628 | } |
f8d5a522 DD |
1629 | #ifdef _MSC_VER |
1630 | # pragma warning( pop ) | |
1631 | #endif | |
c5be433b | 1632 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 | 1633 | |
f8d5a522 DD |
1634 | #ifdef _MSC_VER |
1635 | # pragma warning( push ) | |
1636 | # pragma warning( disable : 4646 ) /* warning C4646: function declared with | |
1637 | __declspec(noreturn) has non-void return type */ | |
1638 | # pragma warning( disable : 4645 ) /* warning C4645: function declared with | |
1639 | __declspec(noreturn) has a return statement */ | |
1640 | #endif | |
cea2e8a9 GS |
1641 | OP * |
1642 | Perl_die(pTHX_ const char* pat, ...) | |
1643 | { | |
cea2e8a9 GS |
1644 | va_list args; |
1645 | va_start(args, pat); | |
c5df3096 | 1646 | vcroak(pat, &args); |
e5964223 | 1647 | NOT_REACHED; /* NOTREACHED */ |
cea2e8a9 | 1648 | va_end(args); |
117af67d | 1649 | NORETURN_FUNCTION_END; |
cea2e8a9 | 1650 | } |
f8d5a522 DD |
1651 | #ifdef _MSC_VER |
1652 | # pragma warning( pop ) | |
1653 | #endif | |
cea2e8a9 | 1654 | |
c5df3096 Z |
1655 | /* |
1656 | =for apidoc Am|void|croak_sv|SV *baseex | |
1657 | ||
1658 | This is an XS interface to Perl's C<die> function. | |
1659 | ||
1660 | C<baseex> is the error message or object. If it is a reference, it | |
1661 | will be used as-is. Otherwise it is used as a string, and if it does | |
1662 | not end with a newline then it will be extended with some indication of | |
1663 | the current location in the code, as described for L</mess_sv>. | |
1664 | ||
1665 | The error message or object will be used as an exception, by default | |
1666 | returning control to the nearest enclosing C<eval>, but subject to | |
1667 | modification by a C<$SIG{__DIE__}> handler. In any case, the C<croak_sv> | |
1668 | function never returns normally. | |
1669 | ||
1670 | To die with a simple string message, the L</croak> function may be | |
1671 | more convenient. | |
1672 | ||
1673 | =cut | |
1674 | */ | |
1675 | ||
c5be433b | 1676 | void |
c5df3096 | 1677 | Perl_croak_sv(pTHX_ SV *baseex) |
cea2e8a9 | 1678 | { |
c5df3096 Z |
1679 | SV *ex = with_queued_errors(mess_sv(baseex, 0)); |
1680 | PERL_ARGS_ASSERT_CROAK_SV; | |
1681 | invoke_exception_hook(ex, FALSE); | |
1682 | die_unwind(ex); | |
1683 | } | |
1684 | ||
1685 | /* | |
1686 | =for apidoc Am|void|vcroak|const char *pat|va_list *args | |
1687 | ||
1688 | This is an XS interface to Perl's C<die> function. | |
1689 | ||
1690 | C<pat> and C<args> are a sprintf-style format pattern and encapsulated | |
1691 | argument list. These are used to generate a string message. If the | |
1692 | message does not end with a newline, then it will be extended with | |
1693 | some indication of the current location in the code, as described for | |
1694 | L</mess_sv>. | |
1695 | ||
1696 | The error message will be used as an exception, by default | |
1697 | returning control to the nearest enclosing C<eval>, but subject to | |
1698 | modification by a C<$SIG{__DIE__}> handler. In any case, the C<croak> | |
1699 | function never returns normally. | |
a687059c | 1700 | |
c5df3096 Z |
1701 | For historical reasons, if C<pat> is null then the contents of C<ERRSV> |
1702 | (C<$@>) will be used as an error message or object instead of building an | |
1703 | error message from arguments. If you want to throw a non-string object, | |
1704 | or build an error message in an SV yourself, it is preferable to use | |
1705 | the L</croak_sv> function, which does not involve clobbering C<ERRSV>. | |
5a844595 | 1706 | |
c5df3096 Z |
1707 | =cut |
1708 | */ | |
1709 | ||
1710 | void | |
1711 | Perl_vcroak(pTHX_ const char* pat, va_list *args) | |
1712 | { | |
1713 | SV *ex = with_queued_errors(pat ? vmess(pat, args) : mess_sv(ERRSV, 0)); | |
1714 | invoke_exception_hook(ex, FALSE); | |
1715 | die_unwind(ex); | |
a687059c LW |
1716 | } |
1717 | ||
c5df3096 Z |
1718 | /* |
1719 | =for apidoc Am|void|croak|const char *pat|... | |
1720 | ||
1721 | This is an XS interface to Perl's C<die> function. | |
1722 | ||
1723 | Take a sprintf-style format pattern and argument list. These are used to | |
1724 | generate a string message. If the message does not end with a newline, | |
1725 | then it will be extended with some indication of the current location | |
1726 | in the code, as described for L</mess_sv>. | |
1727 | ||
1728 | The error message will be used as an exception, by default | |
1729 | returning control to the nearest enclosing C<eval>, but subject to | |
1730 | modification by a C<$SIG{__DIE__}> handler. In any case, the C<croak> | |
1731 | function never returns normally. | |
1732 | ||
1733 | For historical reasons, if C<pat> is null then the contents of C<ERRSV> | |
1734 | (C<$@>) will be used as an error message or object instead of building an | |
1735 | error message from arguments. If you want to throw a non-string object, | |
1736 | or build an error message in an SV yourself, it is preferable to use | |
1737 | the L</croak_sv> function, which does not involve clobbering C<ERRSV>. | |
1738 | ||
1739 | =cut | |
1740 | */ | |
1741 | ||
c5be433b | 1742 | #if defined(PERL_IMPLICIT_CONTEXT) |
8990e307 | 1743 | void |
cea2e8a9 | 1744 | Perl_croak_nocontext(const char *pat, ...) |
a687059c | 1745 | { |
cea2e8a9 | 1746 | dTHX; |
a687059c | 1747 | va_list args; |
cea2e8a9 | 1748 | va_start(args, pat); |
c5be433b | 1749 | vcroak(pat, &args); |
e5964223 | 1750 | NOT_REACHED; /* NOTREACHED */ |
cea2e8a9 GS |
1751 | va_end(args); |
1752 | } | |
1753 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1754 | ||
c5df3096 Z |
1755 | void |
1756 | Perl_croak(pTHX_ const char *pat, ...) | |
1757 | { | |
1758 | va_list args; | |
1759 | va_start(args, pat); | |
1760 | vcroak(pat, &args); | |
e5964223 | 1761 | NOT_REACHED; /* NOTREACHED */ |
c5df3096 Z |
1762 | va_end(args); |
1763 | } | |
1764 | ||
954c1994 | 1765 | /* |
6ad8f254 NC |
1766 | =for apidoc Am|void|croak_no_modify |
1767 | ||
1768 | Exactly equivalent to C<Perl_croak(aTHX_ "%s", PL_no_modify)>, but generates | |
72d33970 | 1769 | terser object code than using C<Perl_croak>. Less code used on exception code |
6ad8f254 NC |
1770 | paths reduces CPU cache pressure. |
1771 | ||
d8e47b5c | 1772 | =cut |
6ad8f254 NC |
1773 | */ |
1774 | ||
1775 | void | |
88772978 | 1776 | Perl_croak_no_modify(void) |
6ad8f254 | 1777 | { |
cb077ed2 | 1778 | Perl_croak_nocontext( "%s", PL_no_modify); |
6ad8f254 NC |
1779 | } |
1780 | ||
4cbe3a7d DD |
1781 | /* does not return, used in util.c perlio.c and win32.c |
1782 | This is typically called when malloc returns NULL. | |
1783 | */ | |
1784 | void | |
88772978 | 1785 | Perl_croak_no_mem(void) |
4cbe3a7d DD |
1786 | { |
1787 | dTHX; | |
77c1c05b | 1788 | |
375ed12a JH |
1789 | int fd = PerlIO_fileno(Perl_error_log); |
1790 | if (fd < 0) | |
1791 | SETERRNO(EBADF,RMS_IFI); | |
1792 | else { | |
1793 | /* Can't use PerlIO to write as it allocates memory */ | |
b469f1e0 | 1794 | PERL_UNUSED_RESULT(PerlLIO_write(fd, PL_no_mem, sizeof(PL_no_mem)-1)); |
375ed12a | 1795 | } |
4cbe3a7d DD |
1796 | my_exit(1); |
1797 | } | |
1798 | ||
3d04513d DD |
1799 | /* does not return, used only in POPSTACK */ |
1800 | void | |
1801 | Perl_croak_popstack(void) | |
1802 | { | |
1803 | dTHX; | |
1804 | PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); | |
1805 | my_exit(1); | |
1806 | } | |
1807 | ||
6ad8f254 | 1808 | /* |
c5df3096 | 1809 | =for apidoc Am|void|warn_sv|SV *baseex |
ccfc67b7 | 1810 | |
c5df3096 | 1811 | This is an XS interface to Perl's C<warn> function. |
954c1994 | 1812 | |
c5df3096 Z |
1813 | C<baseex> is the error message or object. If it is a reference, it |
1814 | will be used as-is. Otherwise it is used as a string, and if it does | |
1815 | not end with a newline then it will be extended with some indication of | |
1816 | the current location in the code, as described for L</mess_sv>. | |
9983fa3c | 1817 | |
c5df3096 Z |
1818 | The error message or object will by default be written to standard error, |
1819 | but this is subject to modification by a C<$SIG{__WARN__}> handler. | |
9983fa3c | 1820 | |
c5df3096 Z |
1821 | To warn with a simple string message, the L</warn> function may be |
1822 | more convenient. | |
954c1994 GS |
1823 | |
1824 | =cut | |
1825 | */ | |
1826 | ||
cea2e8a9 | 1827 | void |
c5df3096 | 1828 | Perl_warn_sv(pTHX_ SV *baseex) |
cea2e8a9 | 1829 | { |
c5df3096 Z |
1830 | SV *ex = mess_sv(baseex, 0); |
1831 | PERL_ARGS_ASSERT_WARN_SV; | |
1832 | if (!invoke_exception_hook(ex, TRUE)) | |
1833 | write_to_stderr(ex); | |
cea2e8a9 GS |
1834 | } |
1835 | ||
c5df3096 Z |
1836 | /* |
1837 | =for apidoc Am|void|vwarn|const char *pat|va_list *args | |
1838 | ||
1839 | This is an XS interface to Perl's C<warn> function. | |
1840 | ||
1841 | C<pat> and C<args> are a sprintf-style format pattern and encapsulated | |
1842 | argument list. These are used to generate a string message. If the | |
1843 | message does not end with a newline, then it will be extended with | |
1844 | some indication of the current location in the code, as described for | |
1845 | L</mess_sv>. | |
1846 | ||
1847 | The error message or object will by default be written to standard error, | |
1848 | but this is subject to modification by a C<$SIG{__WARN__}> handler. | |
1849 | ||
1850 | Unlike with L</vcroak>, C<pat> is not permitted to be null. | |
1851 | ||
1852 | =cut | |
1853 | */ | |
1854 | ||
c5be433b GS |
1855 | void |
1856 | Perl_vwarn(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1857 | { |
c5df3096 | 1858 | SV *ex = vmess(pat, args); |
7918f24d | 1859 | PERL_ARGS_ASSERT_VWARN; |
c5df3096 Z |
1860 | if (!invoke_exception_hook(ex, TRUE)) |
1861 | write_to_stderr(ex); | |
1862 | } | |
7918f24d | 1863 | |
c5df3096 Z |
1864 | /* |
1865 | =for apidoc Am|void|warn|const char *pat|... | |
87582a92 | 1866 | |
c5df3096 Z |
1867 | This is an XS interface to Perl's C<warn> function. |
1868 | ||
1869 | Take a sprintf-style format pattern and argument list. These are used to | |
1870 | generate a string message. If the message does not end with a newline, | |
1871 | then it will be extended with some indication of the current location | |
1872 | in the code, as described for L</mess_sv>. | |
1873 | ||
1874 | The error message or object will by default be written to standard error, | |
1875 | but this is subject to modification by a C<$SIG{__WARN__}> handler. | |
1876 | ||
1877 | Unlike with L</croak>, C<pat> is not permitted to be null. | |
1878 | ||
1879 | =cut | |
1880 | */ | |
8d063cd8 | 1881 | |
c5be433b | 1882 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1883 | void |
1884 | Perl_warn_nocontext(const char *pat, ...) | |
1885 | { | |
1886 | dTHX; | |
1887 | va_list args; | |
7918f24d | 1888 | PERL_ARGS_ASSERT_WARN_NOCONTEXT; |
cea2e8a9 | 1889 | va_start(args, pat); |
c5be433b | 1890 | vwarn(pat, &args); |
cea2e8a9 GS |
1891 | va_end(args); |
1892 | } | |
1893 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1894 | ||
1895 | void | |
1896 | Perl_warn(pTHX_ const char *pat, ...) | |
1897 | { | |
1898 | va_list args; | |
7918f24d | 1899 | PERL_ARGS_ASSERT_WARN; |
cea2e8a9 | 1900 | va_start(args, pat); |
c5be433b | 1901 | vwarn(pat, &args); |
cea2e8a9 GS |
1902 | va_end(args); |
1903 | } | |
1904 | ||
c5be433b GS |
1905 | #if defined(PERL_IMPLICIT_CONTEXT) |
1906 | void | |
1907 | Perl_warner_nocontext(U32 err, const char *pat, ...) | |
1908 | { | |
27da23d5 | 1909 | dTHX; |
c5be433b | 1910 | va_list args; |
7918f24d | 1911 | PERL_ARGS_ASSERT_WARNER_NOCONTEXT; |
c5be433b GS |
1912 | va_start(args, pat); |
1913 | vwarner(err, pat, &args); | |
1914 | va_end(args); | |
1915 | } | |
1916 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1917 | ||
599cee73 | 1918 | void |
9b387841 NC |
1919 | Perl_ck_warner_d(pTHX_ U32 err, const char* pat, ...) |
1920 | { | |
1921 | PERL_ARGS_ASSERT_CK_WARNER_D; | |
1922 | ||
1923 | if (Perl_ckwarn_d(aTHX_ err)) { | |
1924 | va_list args; | |
1925 | va_start(args, pat); | |
1926 | vwarner(err, pat, &args); | |
1927 | va_end(args); | |
1928 | } | |
1929 | } | |
1930 | ||
1931 | void | |
a2a5de95 NC |
1932 | Perl_ck_warner(pTHX_ U32 err, const char* pat, ...) |
1933 | { | |
1934 | PERL_ARGS_ASSERT_CK_WARNER; | |
1935 | ||
1936 | if (Perl_ckwarn(aTHX_ err)) { | |
1937 | va_list args; | |
1938 | va_start(args, pat); | |
1939 | vwarner(err, pat, &args); | |
1940 | va_end(args); | |
1941 | } | |
1942 | } | |
1943 | ||
1944 | void | |
864dbfa3 | 1945 | Perl_warner(pTHX_ U32 err, const char* pat,...) |
599cee73 PM |
1946 | { |
1947 | va_list args; | |
7918f24d | 1948 | PERL_ARGS_ASSERT_WARNER; |
c5be433b GS |
1949 | va_start(args, pat); |
1950 | vwarner(err, pat, &args); | |
1951 | va_end(args); | |
1952 | } | |
1953 | ||
1954 | void | |
1955 | Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args) | |
1956 | { | |
27da23d5 | 1957 | dVAR; |
7918f24d | 1958 | PERL_ARGS_ASSERT_VWARNER; |
46b27d2f LM |
1959 | if ( |
1960 | (PL_warnhook == PERL_WARNHOOK_FATAL || ckDEAD(err)) && | |
1961 | !(PL_in_eval & EVAL_KEEPERR) | |
1962 | ) { | |
a3b680e6 | 1963 | SV * const msv = vmess(pat, args); |
599cee73 | 1964 | |
594b6fac LM |
1965 | if (PL_parser && PL_parser->error_count) { |
1966 | qerror(msv); | |
1967 | } | |
1968 | else { | |
1969 | invoke_exception_hook(msv, FALSE); | |
1970 | die_unwind(msv); | |
1971 | } | |
599cee73 PM |
1972 | } |
1973 | else { | |
d13b0d77 | 1974 | Perl_vwarn(aTHX_ pat, args); |
599cee73 PM |
1975 | } |
1976 | } | |
1977 | ||
f54ba1c2 DM |
1978 | /* implements the ckWARN? macros */ |
1979 | ||
1980 | bool | |
1981 | Perl_ckwarn(pTHX_ U32 w) | |
1982 | { | |
ad287e37 | 1983 | /* If lexical warnings have not been set, use $^W. */ |
3c3f8cd6 AB |
1984 | if (isLEXWARN_off) |
1985 | return PL_dowarn & G_WARN_ON; | |
ad287e37 | 1986 | |
26c7b074 | 1987 | return ckwarn_common(w); |
f54ba1c2 DM |
1988 | } |
1989 | ||
1990 | /* implements the ckWARN?_d macro */ | |
1991 | ||
1992 | bool | |
1993 | Perl_ckwarn_d(pTHX_ U32 w) | |
1994 | { | |
ad287e37 | 1995 | /* If lexical warnings have not been set then default classes warn. */ |
3c3f8cd6 AB |
1996 | if (isLEXWARN_off) |
1997 | return TRUE; | |
ad287e37 | 1998 | |
26c7b074 NC |
1999 | return ckwarn_common(w); |
2000 | } | |
2001 | ||
2002 | static bool | |
2003 | S_ckwarn_common(pTHX_ U32 w) | |
2004 | { | |
3c3f8cd6 AB |
2005 | if (PL_curcop->cop_warnings == pWARN_ALL) |
2006 | return TRUE; | |
ad287e37 NC |
2007 | |
2008 | if (PL_curcop->cop_warnings == pWARN_NONE) | |
2009 | return FALSE; | |
2010 | ||
98fe6610 NC |
2011 | /* Check the assumption that at least the first slot is non-zero. */ |
2012 | assert(unpackWARN1(w)); | |
2013 | ||
2014 | /* Check the assumption that it is valid to stop as soon as a zero slot is | |
2015 | seen. */ | |
2016 | if (!unpackWARN2(w)) { | |
2017 | assert(!unpackWARN3(w)); | |
2018 | assert(!unpackWARN4(w)); | |
2019 | } else if (!unpackWARN3(w)) { | |
2020 | assert(!unpackWARN4(w)); | |
2021 | } | |
2022 | ||
26c7b074 NC |
2023 | /* Right, dealt with all the special cases, which are implemented as non- |
2024 | pointers, so there is a pointer to a real warnings mask. */ | |
98fe6610 NC |
2025 | do { |
2026 | if (isWARN_on(PL_curcop->cop_warnings, unpackWARN1(w))) | |
2027 | return TRUE; | |
2028 | } while (w >>= WARNshift); | |
2029 | ||
2030 | return FALSE; | |
f54ba1c2 DM |
2031 | } |
2032 | ||
72dc9ed5 NC |
2033 | /* Set buffer=NULL to get a new one. */ |
2034 | STRLEN * | |
8ee4cf24 | 2035 | Perl_new_warnings_bitfield(pTHX_ STRLEN *buffer, const char *const bits, |
72dc9ed5 | 2036 | STRLEN size) { |
5af88345 FC |
2037 | const MEM_SIZE len_wanted = |
2038 | sizeof(STRLEN) + (size > WARNsize ? size : WARNsize); | |
35da51f7 | 2039 | PERL_UNUSED_CONTEXT; |
7918f24d | 2040 | PERL_ARGS_ASSERT_NEW_WARNINGS_BITFIELD; |
72dc9ed5 | 2041 | |
10edeb5d JH |
2042 | buffer = (STRLEN*) |
2043 | (specialWARN(buffer) ? | |
2044 | PerlMemShared_malloc(len_wanted) : | |
2045 | PerlMemShared_realloc(buffer, len_wanted)); | |
72dc9ed5 NC |
2046 | buffer[0] = size; |
2047 | Copy(bits, (buffer + 1), size, char); | |
5af88345 FC |
2048 | if (size < WARNsize) |
2049 | Zero((char *)(buffer + 1) + size, WARNsize - size, char); | |
72dc9ed5 NC |
2050 | return buffer; |
2051 | } | |
f54ba1c2 | 2052 | |
e6587932 DM |
2053 | /* since we've already done strlen() for both nam and val |
2054 | * we can use that info to make things faster than | |
2055 | * sprintf(s, "%s=%s", nam, val) | |
2056 | */ | |
2057 | #define my_setenv_format(s, nam, nlen, val, vlen) \ | |
2058 | Copy(nam, s, nlen, char); \ | |
2059 | *(s+nlen) = '='; \ | |
2060 | Copy(val, s+(nlen+1), vlen, char); \ | |
2061 | *(s+(nlen+1+vlen)) = '\0' | |
2062 | ||
c5d12488 JH |
2063 | #ifdef USE_ENVIRON_ARRAY |
2064 | /* VMS' my_setenv() is in vms.c */ | |
2065 | #if !defined(WIN32) && !defined(NETWARE) | |
8d063cd8 | 2066 | void |
e1ec3a88 | 2067 | Perl_my_setenv(pTHX_ const char *nam, const char *val) |
8d063cd8 | 2068 | { |
27da23d5 | 2069 | dVAR; |
ea34f6bd | 2070 | #ifdef __amigaos4__ |
6e3136a6 AB |
2071 | amigaos4_obtain_environ(__FUNCTION__); |
2072 | #endif | |
4efc5df6 GS |
2073 | #ifdef USE_ITHREADS |
2074 | /* only parent thread can modify process environment */ | |
2075 | if (PL_curinterp == aTHX) | |
2076 | #endif | |
2077 | { | |
f2517201 | 2078 | #ifndef PERL_USE_SAFE_PUTENV |
50acdf95 | 2079 | if (!PL_use_safe_putenv) { |
b7d87861 JH |
2080 | /* most putenv()s leak, so we manipulate environ directly */ |
2081 | I32 i; | |
2082 | const I32 len = strlen(nam); | |
2083 | int nlen, vlen; | |
2084 | ||
2085 | /* where does it go? */ | |
2086 | for (i = 0; environ[i]; i++) { | |
2087 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') | |
2088 | break; | |
2089 | } | |
c5d12488 | 2090 | |
b7d87861 JH |
2091 | if (environ == PL_origenviron) { /* need we copy environment? */ |
2092 | I32 j; | |
2093 | I32 max; | |
2094 | char **tmpenv; | |
2095 | ||
2096 | max = i; | |
2097 | while (environ[max]) | |
2098 | max++; | |
2099 | tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*)); | |
2100 | for (j=0; j<max; j++) { /* copy environment */ | |
2101 | const int len = strlen(environ[j]); | |
2102 | tmpenv[j] = (char*)safesysmalloc((len+1)*sizeof(char)); | |
2103 | Copy(environ[j], tmpenv[j], len+1, char); | |
2104 | } | |
2105 | tmpenv[max] = NULL; | |
2106 | environ = tmpenv; /* tell exec where it is now */ | |
2107 | } | |
2108 | if (!val) { | |
2109 | safesysfree(environ[i]); | |
2110 | while (environ[i]) { | |
2111 | environ[i] = environ[i+1]; | |
2112 | i++; | |
2113 | } | |
ea34f6bd | 2114 | #ifdef __amigaos4__ |
6e3136a6 AB |
2115 | goto my_setenv_out; |
2116 | #else | |
b7d87861 | 2117 | return; |
6e3136a6 | 2118 | #endif |
b7d87861 JH |
2119 | } |
2120 | if (!environ[i]) { /* does not exist yet */ | |
2121 | environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*)); | |
2122 | environ[i+1] = NULL; /* make sure it's null terminated */ | |
2123 | } | |
2124 | else | |
2125 | safesysfree(environ[i]); | |
2126 | nlen = strlen(nam); | |
2127 | vlen = strlen(val); | |
2128 | ||
2129 | environ[i] = (char*)safesysmalloc((nlen+vlen+2) * sizeof(char)); | |
2130 | /* all that work just for this */ | |
2131 | my_setenv_format(environ[i], nam, nlen, val, vlen); | |
50acdf95 | 2132 | } else { |
c5d12488 | 2133 | # endif |
235c1d5f AD |
2134 | /* This next branch should only be called #if defined(HAS_SETENV), but |
2135 | Configure doesn't test for that yet. For Solaris, setenv() and unsetenv() | |
2136 | were introduced in Solaris 9, so testing for HAS UNSETENV is sufficient. | |
2137 | */ | |
12ffbb10 | 2138 | # if defined(__CYGWIN__)|| defined(__SYMBIAN32__) || defined(__riscos__) || (defined(__sun) && defined(HAS_UNSETENV)) || defined(PERL_DARWIN) |
88f5bc07 AB |
2139 | # if defined(HAS_UNSETENV) |
2140 | if (val == NULL) { | |
2141 | (void)unsetenv(nam); | |
2142 | } else { | |
2143 | (void)setenv(nam, val, 1); | |
2144 | } | |
2145 | # else /* ! HAS_UNSETENV */ | |
2146 | (void)setenv(nam, val, 1); | |
2147 | # endif /* HAS_UNSETENV */ | |
8ad758c7 | 2148 | # elif defined(HAS_UNSETENV) |
88f5bc07 | 2149 | if (val == NULL) { |
ba88ff58 MJ |
2150 | if (environ) /* old glibc can crash with null environ */ |
2151 | (void)unsetenv(nam); | |
88f5bc07 | 2152 | } else { |
c4420975 AL |
2153 | const int nlen = strlen(nam); |
2154 | const int vlen = strlen(val); | |
2155 | char * const new_env = | |
88f5bc07 AB |
2156 | (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); |
2157 | my_setenv_format(new_env, nam, nlen, val, vlen); | |
2158 | (void)putenv(new_env); | |
2159 | } | |
8ad758c7 | 2160 | # else /* ! HAS_UNSETENV */ |
88f5bc07 | 2161 | char *new_env; |
c4420975 AL |
2162 | const int nlen = strlen(nam); |
2163 | int vlen; | |
88f5bc07 AB |
2164 | if (!val) { |
2165 | val = ""; | |
2166 | } | |
2167 | vlen = strlen(val); | |
2168 | new_env = (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); | |
2169 | /* all that work just for this */ | |
2170 | my_setenv_format(new_env, nam, nlen, val, vlen); | |
2171 | (void)putenv(new_env); | |
47dafe4d | 2172 | # endif /* __CYGWIN__ */ |
50acdf95 MS |
2173 | #ifndef PERL_USE_SAFE_PUTENV |
2174 | } | |
2175 | #endif | |
4efc5df6 | 2176 | } |
ea34f6bd | 2177 | #ifdef __amigaos4__ |
6e3136a6 AB |
2178 | my_setenv_out: |
2179 | amigaos4_release_environ(__FUNCTION__); | |
2180 | #endif | |
8d063cd8 LW |
2181 | } |
2182 | ||
c5d12488 | 2183 | #else /* WIN32 || NETWARE */ |
68dc0745 | 2184 | |
2185 | void | |
72229eff | 2186 | Perl_my_setenv(pTHX_ const char *nam, const char *val) |
68dc0745 | 2187 | { |
27da23d5 | 2188 | dVAR; |
eb578fdb | 2189 | char *envstr; |
c5d12488 JH |
2190 | const int nlen = strlen(nam); |
2191 | int vlen; | |
e6587932 | 2192 | |
c5d12488 JH |
2193 | if (!val) { |
2194 | val = ""; | |
ac5c734f | 2195 | } |
c5d12488 JH |
2196 | vlen = strlen(val); |
2197 | Newx(envstr, nlen+vlen+2, char); | |
2198 | my_setenv_format(envstr, nam, nlen, val, vlen); | |
2199 | (void)PerlEnv_putenv(envstr); | |
2200 | Safefree(envstr); | |
3e3baf6d TB |
2201 | } |
2202 | ||
c5d12488 | 2203 | #endif /* WIN32 || NETWARE */ |
3e3baf6d | 2204 | |
739a0b84 | 2205 | #endif /* !VMS */ |
378cc40b | 2206 | |
16d20bd9 | 2207 | #ifdef UNLINK_ALL_VERSIONS |
79072805 | 2208 | I32 |
6e732051 | 2209 | Perl_unlnk(pTHX_ const char *f) /* unlink all versions of a file */ |
378cc40b | 2210 | { |
35da51f7 | 2211 | I32 retries = 0; |
378cc40b | 2212 | |
7918f24d NC |
2213 | PERL_ARGS_ASSERT_UNLNK; |
2214 | ||
35da51f7 AL |
2215 | while (PerlLIO_unlink(f) >= 0) |
2216 | retries++; | |
2217 | return retries ? 0 : -1; | |
378cc40b LW |
2218 | } |
2219 | #endif | |
2220 | ||
4a7d1889 | 2221 | PerlIO * |
c9289b7b | 2222 | Perl_my_popen_list(pTHX_ const char *mode, int n, SV **args) |
4a7d1889 | 2223 | { |
f6fb4e44 | 2224 | #if (!defined(DOSISH) || defined(HAS_FORK)) && !defined(OS2) && !defined(VMS) && !defined(NETWARE) && !defined(__LIBCATAMOUNT__) && !defined(__amigaos4__) |
1f852d0d | 2225 | int p[2]; |
eb578fdb KW |
2226 | I32 This, that; |
2227 | Pid_t pid; | |
1f852d0d NIS |
2228 | SV *sv; |
2229 | I32 did_pipes = 0; | |
2230 | int pp[2]; | |
2231 | ||
7918f24d NC |
2232 | PERL_ARGS_ASSERT_MY_POPEN_LIST; |
2233 | ||
1f852d0d NIS |
2234 | PERL_FLUSHALL_FOR_CHILD; |
2235 | This = (*mode == 'w'); | |
2236 | that = !This; | |
284167a5 | 2237 | if (TAINTING_get) { |
1f852d0d NIS |
2238 | taint_env(); |
2239 | taint_proper("Insecure %s%s", "EXEC"); | |
2240 | } | |
2241 | if (PerlProc_pipe(p) < 0) | |
4608196e | 2242 | return NULL; |
1f852d0d NIS |
2243 | /* Try for another pipe pair for error return */ |
2244 | if (PerlProc_pipe(pp) >= 0) | |
2245 | did_pipes = 1; | |
52e18b1f | 2246 | while ((pid = PerlProc_fork()) < 0) { |
1f852d0d NIS |
2247 | if (errno != EAGAIN) { |
2248 | PerlLIO_close(p[This]); | |
4e6dfe71 | 2249 | PerlLIO_close(p[that]); |
1f852d0d NIS |
2250 | if (did_pipes) { |
2251 | PerlLIO_close(pp[0]); | |
2252 | PerlLIO_close(pp[1]); | |
2253 | } | |
4608196e | 2254 | return NULL; |
1f852d0d | 2255 | } |
a2a5de95 | 2256 | Perl_ck_warner(aTHX_ packWARN(WARN_PIPE), "Can't fork, trying again in 5 seconds"); |
1f852d0d NIS |
2257 | sleep(5); |
2258 | } | |
2259 | if (pid == 0) { | |
2260 | /* Child */ | |
1f852d0d NIS |
2261 | #undef THIS |
2262 | #undef THAT | |
2263 | #define THIS that | |
2264 | #define THAT This | |
1f852d0d NIS |
2265 | /* Close parent's end of error status pipe (if any) */ |
2266 | if (did_pipes) { | |
2267 | PerlLIO_close(pp[0]); | |
131d45a9 | 2268 | #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC) |
1f852d0d | 2269 | /* Close error pipe automatically if exec works */ |
375ed12a JH |
2270 | if (fcntl(pp[1], F_SETFD, FD_CLOEXEC) < 0) |
2271 | return NULL; | |
1f852d0d NIS |
2272 | #endif |
2273 | } | |
2274 | /* Now dup our end of _the_ pipe to right position */ | |
2275 | if (p[THIS] != (*mode == 'r')) { | |
2276 | PerlLIO_dup2(p[THIS], *mode == 'r'); | |
2277 | PerlLIO_close(p[THIS]); | |
4e6dfe71 GS |
2278 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
2279 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ | |
1f852d0d | 2280 | } |
4e6dfe71 GS |
2281 | else |
2282 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ | |
1f852d0d NIS |
2283 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
2284 | /* No automatic close - do it by hand */ | |
b7953727 JH |
2285 | # ifndef NOFILE |
2286 | # define NOFILE 20 | |
2287 | # endif | |
a080fe3d NIS |
2288 | { |
2289 | int fd; | |
2290 | ||
2291 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) { | |
3aed30dc | 2292 | if (fd != pp[1]) |
a080fe3d NIS |
2293 | PerlLIO_close(fd); |
2294 | } | |
1f852d0d NIS |
2295 | } |
2296 | #endif | |
a0714e2c | 2297 | do_aexec5(NULL, args-1, args-1+n, pp[1], did_pipes); |
1f852d0d NIS |
2298 | PerlProc__exit(1); |
2299 | #undef THIS | |
2300 | #undef THAT | |
2301 | } | |
2302 | /* Parent */ | |
52e18b1f | 2303 | do_execfree(); /* free any memory malloced by child on fork */ |
1f852d0d NIS |
2304 | if (did_pipes) |
2305 | PerlLIO_close(pp[1]); | |
2306 | /* Keep the lower of the two fd numbers */ | |
2307 | if (p[that] < p[This]) { | |
2308 | PerlLIO_dup2(p[This], p[that]); | |
2309 | PerlLIO_close(p[This]); | |
2310 | p[This] = p[that]; | |
2311 | } | |
4e6dfe71 GS |
2312 | else |
2313 | PerlLIO_close(p[that]); /* close child's end of pipe */ | |
2314 | ||
1f852d0d | 2315 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
862a34c6 | 2316 | SvUPGRADE(sv,SVt_IV); |
45977657 | 2317 | SvIV_set(sv, pid); |
1f852d0d NIS |
2318 | PL_forkprocess = pid; |
2319 | /* If we managed to get status pipe check for exec fail */ | |
2320 | if (did_pipes && pid > 0) { | |
2321 | int errkid; | |
bb7a0f54 | 2322 | unsigned n = 0; |
1f852d0d NIS |
2323 | |
2324 | while (n < sizeof(int)) { | |
19742f39 | 2325 | const SSize_t n1 = PerlLIO_read(pp[0], |
1f852d0d NIS |
2326 | (void*)(((char*)&errkid)+n), |
2327 | (sizeof(int)) - n); | |
2328 | if (n1 <= 0) | |
2329 | break; | |
2330 | n += n1; | |
2331 | } | |
2332 | PerlLIO_close(pp[0]); | |
2333 | did_pipes = 0; | |
2334 | if (n) { /* Error */ | |
2335 | int pid2, status; | |
8c51524e | 2336 | PerlLIO_close(p[This]); |
1f852d0d | 2337 | if (n != sizeof(int)) |
5637ef5b | 2338 | Perl_croak(aTHX_ "panic: kid popen errno read, n=%u", n); |
1f852d0d NIS |
2339 | do { |
2340 | pid2 = wait4pid(pid, &status, 0); | |
2341 | } while (pid2 == -1 && errno == EINTR); | |
2342 | errno = errkid; /* Propagate errno from kid */ | |
4608196e | 2343 | return NULL; |
1f852d0d NIS |
2344 | } |
2345 | } | |
2346 | if (did_pipes) | |
2347 | PerlLIO_close(pp[0]); | |
2348 | return PerlIO_fdopen(p[This], mode); | |
2349 | #else | |
8492b23f | 2350 | # if defined(OS2) /* Same, without fork()ing and all extra overhead... */ |
4e205ed6 | 2351 | return my_syspopen4(aTHX_ NULL, mode, n, args); |
8492b23f TC |
2352 | # elif defined(WIN32) |
2353 | return win32_popenlist(mode, n, args); | |
9d419b5f | 2354 | # else |
4a7d1889 NIS |
2355 | Perl_croak(aTHX_ "List form of piped open not implemented"); |
2356 | return (PerlIO *) NULL; | |
9d419b5f | 2357 | # endif |
1f852d0d | 2358 | #endif |
4a7d1889 NIS |
2359 | } |
2360 | ||
4dd5370d AB |
2361 | /* VMS' my_popen() is in VMS.c, same with OS/2 and AmigaOS 4. */ |
2362 | #if (!defined(DOSISH) || defined(HAS_FORK)) && !defined(VMS) && !defined(__LIBCATAMOUNT__) && !defined(__amigaos4__) | |
760ac839 | 2363 | PerlIO * |
3dd43144 | 2364 | Perl_my_popen(pTHX_ const char *cmd, const char *mode) |
a687059c LW |
2365 | { |
2366 | int p[2]; | |
eb578fdb KW |
2367 | I32 This, that; |
2368 | Pid_t pid; | |
79072805 | 2369 | SV *sv; |
bfce84ec | 2370 | const I32 doexec = !(*cmd == '-' && cmd[1] == '\0'); |
e446cec8 IZ |
2371 | I32 did_pipes = 0; |
2372 | int pp[2]; | |
a687059c | 2373 | |
7918f24d NC |
2374 | PERL_ARGS_ASSERT_MY_POPEN; |
2375 | ||
45bc9206 | 2376 | PERL_FLUSHALL_FOR_CHILD; |
ddcf38b7 IZ |
2377 | #ifdef OS2 |
2378 | if (doexec) { | |
23da6c43 | 2379 | return my_syspopen(aTHX_ cmd,mode); |
ddcf38b7 | 2380 | } |
a1d180c4 | 2381 | #endif |
8ac85365 NIS |
2382 | This = (*mode == 'w'); |
2383 | that = !This; | |
284167a5 | 2384 | if (doexec && TAINTING_get) { |
bbce6d69 | 2385 | taint_env(); |
2386 | taint_proper("Insecure %s%s", "EXEC"); | |
d48672a2 | 2387 | } |
c2267164 | 2388 | if (PerlProc_pipe(p) < 0) |
4608196e | 2389 | return NULL; |
e446cec8 IZ |
2390 | if (doexec && PerlProc_pipe(pp) >= 0) |
2391 | did_pipes = 1; | |
52e18b1f | 2392 | while ((pid = PerlProc_fork()) < 0) { |
a687059c | 2393 | if (errno != EAGAIN) { |
6ad3d225 | 2394 | PerlLIO_close(p[This]); |
b5ac89c3 | 2395 | PerlLIO_close(p[that]); |
e446cec8 IZ |
2396 | if (did_pipes) { |
2397 | PerlLIO_close(pp[0]); | |
2398 | PerlLIO_close(pp[1]); | |
2399 | } | |
a687059c | 2400 | if (!doexec) |
b3647a36 | 2401 | Perl_croak(aTHX_ "Can't fork: %s", Strerror(errno)); |
4608196e | 2402 | return NULL; |
a687059c | 2403 | } |
a2a5de95 | 2404 | Perl_ck_warner(aTHX_ packWARN(WARN_PIPE), "Can't fork, trying again in 5 seconds"); |
a687059c LW |
2405 | sleep(5); |
2406 | } | |
2407 | if (pid == 0) { | |
79072805 | 2408 | |
30ac6d9b GS |
2409 | #undef THIS |
2410 | #undef THAT | |
a687059c | 2411 | #define THIS that |
8ac85365 | 2412 | #define THAT This |
e446cec8 IZ |
2413 | if (did_pipes) { |
2414 | PerlLIO_close(pp[0]); | |
2415 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
375ed12a JH |
2416 | if (fcntl(pp[1], F_SETFD, FD_CLOEXEC) < 0) |
2417 | return NULL; | |
e446cec8 IZ |
2418 | #endif |
2419 | } | |
a687059c | 2420 | if (p[THIS] != (*mode == 'r')) { |
6ad3d225 GS |
2421 | PerlLIO_dup2(p[THIS], *mode == 'r'); |
2422 | PerlLIO_close(p[THIS]); | |
b5ac89c3 NIS |
2423 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
2424 | PerlLIO_close(p[THAT]); | |
a687059c | 2425 | } |
b5ac89c3 NIS |
2426 | else |
2427 | PerlLIO_close(p[THAT]); | |
4435c477 | 2428 | #ifndef OS2 |
a687059c | 2429 | if (doexec) { |
a0d0e21e | 2430 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 LW |
2431 | #ifndef NOFILE |
2432 | #define NOFILE 20 | |
2433 | #endif | |
a080fe3d | 2434 | { |
3aed30dc | 2435 | int fd; |
a080fe3d NIS |
2436 | |
2437 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) | |
2438 | if (fd != pp[1]) | |
3aed30dc | 2439 | PerlLIO_close(fd); |
a080fe3d | 2440 | } |
ae986130 | 2441 | #endif |
a080fe3d NIS |
2442 | /* may or may not use the shell */ |
2443 | do_exec3(cmd, pp[1], did_pipes); | |
6ad3d225 | 2444 | PerlProc__exit(1); |
a687059c | 2445 | } |
4435c477 | 2446 | #endif /* defined OS2 */ |
713cef20 IZ |
2447 | |
2448 | #ifdef PERLIO_USING_CRLF | |
2449 | /* Since we circumvent IO layers when we manipulate low-level | |
2450 | filedescriptors directly, need to manually switch to the | |
2451 | default, binary, low-level mode; see PerlIOBuf_open(). */ | |
2452 | PerlLIO_setmode((*mode == 'r'), O_BINARY); | |
2453 | #endif | |
3280af22 | 2454 | PL_forkprocess = 0; |
ca0c25f6 | 2455 | #ifdef PERL_USES_PL_PIDSTATUS |
3280af22 | 2456 | hv_clear(PL_pidstatus); /* we have no children */ |
ca0c25f6 | 2457 | #endif |
4608196e | 2458 | return NULL; |
a687059c LW |
2459 | #undef THIS |
2460 | #undef THAT | |
2461 | } | |
b5ac89c3 | 2462 | do_execfree(); /* free any memory malloced by child on vfork */ |
e446cec8 IZ |
2463 | if (did_pipes) |
2464 | PerlLIO_close(pp[1]); | |
8ac85365 | 2465 | if (p[that] < p[This]) { |
6ad3d225 GS |
2466 | PerlLIO_dup2(p[This], p[that]); |
2467 | PerlLIO_close(p[This]); | |
8ac85365 | 2468 | p[This] = p[that]; |
62b28dd9 | 2469 | } |
b5ac89c3 NIS |
2470 | else |
2471 | PerlLIO_close(p[that]); | |
2472 | ||
3280af22 | 2473 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
862a34c6 | 2474 | SvUPGRADE(sv,SVt_IV); |
45977657 | 2475 | SvIV_set(sv, pid); |
3280af22 | 2476 | PL_forkprocess = pid; |
e446cec8 IZ |
2477 | if (did_pipes && pid > 0) { |
2478 | int errkid; | |
bb7a0f54 | 2479 | unsigned n = 0; |
e446cec8 IZ |
2480 | |
2481 | while (n < sizeof(int)) { | |
19742f39 | 2482 | const SSize_t n1 = PerlLIO_read(pp[0], |
e446cec8 IZ |
2483 | (void*)(((char*)&errkid)+n), |
2484 | (sizeof(int)) - n); | |
2485 | if (n1 <= 0) | |
2486 | break; | |
2487 | n += n1; | |
2488 | } | |
2f96c702 IZ |
2489 | PerlLIO_close(pp[0]); |
2490 | did_pipes = 0; | |
e446cec8 | 2491 | if (n) { /* Error */ |
faa466a7 | 2492 | int pid2, status; |
8c51524e | 2493 | PerlLIO_close(p[This]); |
e446cec8 | 2494 | if (n != sizeof(int)) |
5637ef5b | 2495 | Perl_croak(aTHX_ "panic: kid popen errno read, n=%u", n); |
faa466a7 RG |
2496 | do { |
2497 | pid2 = wait4pid(pid, &status, 0); | |
2498 | } while (pid2 == -1 && errno == EINTR); | |
e446cec8 | 2499 | errno = errkid; /* Propagate errno from kid */ |
4608196e | 2500 | return NULL; |
e446cec8 IZ |
2501 | } |
2502 | } | |
2503 | if (did_pipes) | |
2504 | PerlLIO_close(pp[0]); | |
8ac85365 | 2505 | return PerlIO_fdopen(p[This], mode); |
a687059c | 2506 | } |
8ad758c7 | 2507 | #elif defined(DJGPP) |
2b96b0a5 JH |
2508 | FILE *djgpp_popen(); |
2509 | PerlIO * | |
cef6ea9d | 2510 | Perl_my_popen(pTHX_ const char *cmd, const char *mode) |
2b96b0a5 JH |
2511 | { |
2512 | PERL_FLUSHALL_FOR_CHILD; | |
2513 | /* Call system's popen() to get a FILE *, then import it. | |
2514 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2515 | apparently not used | |
2516 | */ | |
2517 | return PerlIO_importFILE(djgpp_popen(cmd, mode), 0); | |
2518 | } | |
8ad758c7 | 2519 | #elif defined(__LIBCATAMOUNT__) |
9c12f1e5 RGS |
2520 | PerlIO * |
2521 | Perl_my_popen(pTHX_ const char *cmd, const char *mode) | |
2522 | { | |
2523 | return NULL; | |
2524 | } | |
7c0587c8 LW |
2525 | |
2526 | #endif /* !DOSISH */ | |
a687059c | 2527 | |
52e18b1f GS |
2528 | /* this is called in parent before the fork() */ |
2529 | void | |
2530 | Perl_atfork_lock(void) | |
80b94025 JH |
2531 | #if defined(USE_ITHREADS) |
2532 | # ifdef USE_PERLIO | |
2533 | PERL_TSA_ACQUIRE(PL_perlio_mutex) | |
2534 | # endif | |
2535 | # ifdef MYMALLOC | |
2536 | PERL_TSA_ACQUIRE(PL_malloc_mutex) | |
2537 | # endif | |
2538 | PERL_TSA_ACQUIRE(PL_op_mutex) | |
2539 | #endif | |
52e18b1f | 2540 | { |
3db8f154 | 2541 | #if defined(USE_ITHREADS) |
20b7effb | 2542 | dVAR; |
52e18b1f | 2543 | /* locks must be held in locking order (if any) */ |
4da80956 P |
2544 | # ifdef USE_PERLIO |
2545 | MUTEX_LOCK(&PL_perlio_mutex); | |
2546 | # endif | |
52e18b1f GS |
2547 | # ifdef MYMALLOC |
2548 | MUTEX_LOCK(&PL_malloc_mutex); | |
2549 | # endif | |
2550 | OP_REFCNT_LOCK; | |
2551 | #endif | |
2552 | } | |
2553 | ||
2554 | /* this is called in both parent and child after the fork() */ | |
2555 | void | |
2556 | Perl_atfork_unlock(void) | |
80b94025 JH |
2557 | #if defined(USE_ITHREADS) |
2558 | # ifdef USE_PERLIO | |
2559 | PERL_TSA_RELEASE(PL_perlio_mutex) | |
2560 | # endif | |
2561 | # ifdef MYMALLOC | |
2562 | PERL_TSA_RELEASE(PL_malloc_mutex) | |
2563 | # endif | |
2564 | PERL_TSA_RELEASE(PL_op_mutex) | |
2565 | #endif | |
52e18b1f | 2566 | { |
3db8f154 | 2567 | #if defined(USE_ITHREADS) |
20b7effb | 2568 | dVAR; |
52e18b1f | 2569 | /* locks must be released in same order as in atfork_lock() */ |
4da80956 P |
2570 | # ifdef USE_PERLIO |
2571 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2572 | # endif | |
52e18b1f GS |
2573 | # ifdef MYMALLOC |
2574 | MUTEX_UNLOCK(&PL_malloc_mutex); | |
2575 | # endif | |
2576 | OP_REFCNT_UNLOCK; | |
2577 | #endif | |
2578 | } | |
2579 | ||
2580 | Pid_t | |
2581 | Perl_my_fork(void) | |
2582 | { | |
2583 | #if defined(HAS_FORK) | |
2584 | Pid_t pid; | |
3db8f154 | 2585 | #if defined(USE_ITHREADS) && !defined(HAS_PTHREAD_ATFORK) |
52e18b1f GS |
2586 | atfork_lock(); |
2587 | pid = fork(); | |
2588 | atfork_unlock(); | |
2589 | #else | |
2590 | /* atfork_lock() and atfork_unlock() are installed as pthread_atfork() | |
2591 | * handlers elsewhere in the code */ | |
2592 | pid = fork(); | |
2593 | #endif | |
2594 | return pid; | |
40262ff4 AB |
2595 | #elif defined(__amigaos4__) |
2596 | return amigaos_fork(); | |
52e18b1f GS |
2597 | #else |
2598 | /* this "canna happen" since nothing should be calling here if !HAS_FORK */ | |
2599 | Perl_croak_nocontext("fork() not available"); | |
b961a566 | 2600 | return 0; |
52e18b1f GS |
2601 | #endif /* HAS_FORK */ |
2602 | } | |
2603 | ||
fe14fcc3 | 2604 | #ifndef HAS_DUP2 |
fec02dd3 | 2605 | int |
ba106d47 | 2606 | dup2(int oldfd, int newfd) |
a687059c | 2607 | { |
a0d0e21e | 2608 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
fec02dd3 AD |
2609 | if (oldfd == newfd) |
2610 | return oldfd; | |
6ad3d225 | 2611 | PerlLIO_close(newfd); |
fec02dd3 | 2612 | return fcntl(oldfd, F_DUPFD, newfd); |
62b28dd9 | 2613 | #else |
fc36a67e | 2614 | #define DUP2_MAX_FDS 256 |
2615 | int fdtmp[DUP2_MAX_FDS]; | |
79072805 | 2616 | I32 fdx = 0; |
ae986130 LW |
2617 | int fd; |
2618 | ||
fe14fcc3 | 2619 | if (oldfd == newfd) |
fec02dd3 | 2620 | return oldfd; |
6ad3d225 | 2621 | PerlLIO_close(newfd); |
fc36a67e | 2622 | /* good enough for low fd's... */ |
6ad3d225 | 2623 | while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) { |
fc36a67e | 2624 | if (fdx >= DUP2_MAX_FDS) { |
6ad3d225 | 2625 | PerlLIO_close(fd); |
fc36a67e | 2626 | fd = -1; |
2627 | break; | |
2628 | } | |
ae986130 | 2629 | fdtmp[fdx++] = fd; |
fc36a67e | 2630 | } |
ae986130 | 2631 | while (fdx > 0) |
6ad3d225 | 2632 | PerlLIO_close(fdtmp[--fdx]); |
fec02dd3 | 2633 | return fd; |
62b28dd9 | 2634 | #endif |
a687059c LW |
2635 | } |
2636 | #endif | |
2637 | ||
64ca3a65 | 2638 | #ifndef PERL_MICRO |
ff68c719 | 2639 | #ifdef HAS_SIGACTION |
2640 | ||
2641 | Sighandler_t | |
864dbfa3 | 2642 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2643 | { |
2644 | struct sigaction act, oact; | |
2645 | ||
a10b1e10 | 2646 | #ifdef USE_ITHREADS |
20b7effb | 2647 | dVAR; |
a10b1e10 JH |
2648 | /* only "parent" interpreter can diddle signals */ |
2649 | if (PL_curinterp != aTHX) | |
8aad04aa | 2650 | return (Sighandler_t) SIG_ERR; |
a10b1e10 JH |
2651 | #endif |
2652 | ||
8aad04aa | 2653 | act.sa_handler = (void(*)(int))handler; |
ff68c719 | 2654 | sigemptyset(&act.sa_mask); |
2655 | act.sa_flags = 0; | |
2656 | #ifdef SA_RESTART | |
4ffa73a3 JH |
2657 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
2658 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
0a8e0eff | 2659 | #endif |
358837b8 | 2660 | #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */ |
8aad04aa | 2661 | if (signo == SIGCHLD && handler == (Sighandler_t) SIG_IGN) |
85264bed CS |
2662 | act.sa_flags |= SA_NOCLDWAIT; |
2663 | #endif | |
ff68c719 | 2664 | if (sigaction(signo, &act, &oact) == -1) |
8aad04aa | 2665 | return (Sighandler_t) SIG_ERR; |
ff68c719 | 2666 | else |
8aad04aa | 2667 | return (Sighandler_t) oact.sa_handler; |
ff68c719 | 2668 | } |
2669 | ||
2670 | Sighandler_t | |
864dbfa3 | 2671 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2672 | { |
2673 | struct sigaction oact; | |
96a5add6 | 2674 | PERL_UNUSED_CONTEXT; |
ff68c719 | 2675 | |
2676 | if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1) | |
8aad04aa | 2677 | return (Sighandler_t) SIG_ERR; |
ff68c719 | 2678 | else |
8aad04aa | 2679 | return (Sighandler_t) oact.sa_handler; |
ff68c719 | 2680 | } |
2681 | ||
2682 | int | |
864dbfa3 | 2683 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2684 | { |
20b7effb | 2685 | #ifdef USE_ITHREADS |
27da23d5 | 2686 | dVAR; |
20b7effb | 2687 | #endif |
ff68c719 | 2688 | struct sigaction act; |
2689 | ||
7918f24d NC |
2690 | PERL_ARGS_ASSERT_RSIGNAL_SAVE; |
2691 | ||
a10b1e10 JH |
2692 | #ifdef USE_ITHREADS |
2693 | /* only "parent" interpreter can diddle signals */ | |
2694 | if (PL_curinterp != aTHX) | |
2695 | return -1; | |
2696 | #endif | |
2697 | ||
8aad04aa | 2698 | act.sa_handler = (void(*)(int))handler; |
ff68c719 | 2699 | sigemptyset(&act.sa_mask); |
2700 | act.sa_flags = 0; | |
2701 | #ifdef SA_RESTART | |
4ffa73a3 JH |
2702 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
2703 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
0a8e0eff | 2704 | #endif |
36b5d377 | 2705 | #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */ |
8aad04aa | 2706 | if (signo == SIGCHLD && handler == (Sighandler_t) SIG_IGN) |
85264bed CS |
2707 | act.sa_flags |= SA_NOCLDWAIT; |
2708 | #endif | |
ff68c719 | 2709 | return sigaction(signo, &act, save); |
2710 | } | |
2711 | ||
2712 | int | |
864dbfa3 | 2713 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2714 | { |
20b7effb | 2715 | #ifdef USE_ITHREADS |
27da23d5 | 2716 | dVAR; |
20b7effb JH |
2717 | #endif |
2718 | PERL_UNUSED_CONTEXT; | |
a10b1e10 JH |
2719 | #ifdef USE_ITHREADS |
2720 | /* only "parent" interpreter can diddle signals */ | |
2721 | if (PL_curinterp != aTHX) | |
2722 | return -1; | |
2723 | #endif | |
2724 | ||
ff68c719 | 2725 | return sigaction(signo, save, (struct sigaction *)NULL); |
2726 | } | |
2727 | ||
2728 | #else /* !HAS_SIGACTION */ | |
2729 | ||
2730 | Sighandler_t | |
864dbfa3 | 2731 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2732 | { |
39f1703b | 2733 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2734 | /* only "parent" interpreter can diddle signals */ |
2735 | if (PL_curinterp != aTHX) | |
8aad04aa | 2736 | return (Sighandler_t) SIG_ERR; |
a10b1e10 JH |
2737 | #endif |
2738 | ||
6ad3d225 | 2739 | return PerlProc_signal(signo, handler); |
ff68c719 | 2740 | } |
2741 | ||
fabdb6c0 | 2742 | static Signal_t |
4e35701f | 2743 | sig_trap(int signo) |
ff68c719 | 2744 | { |
27da23d5 JH |
2745 | dVAR; |
2746 | PL_sig_trapped++; | |
ff68c719 | 2747 | } |
2748 | ||
2749 | Sighandler_t | |
864dbfa3 | 2750 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2751 | { |
27da23d5 | 2752 | dVAR; |
ff68c719 | 2753 | Sighandler_t oldsig; |
2754 | ||
39f1703b | 2755 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2756 | /* only "parent" interpreter can diddle signals */ |
2757 | if (PL_curinterp != aTHX) | |
8aad04aa | 2758 | return (Sighandler_t) SIG_ERR; |
a10b1e10 JH |
2759 | #endif |
2760 | ||
27da23d5 | 2761 | PL_sig_trapped = 0; |
6ad3d225 GS |
2762 | oldsig = PerlProc_signal(signo, sig_trap); |
2763 | PerlProc_signal(signo, oldsig); | |
27da23d5 | 2764 | if (PL_sig_trapped) |
3aed30dc | 2765 | PerlProc_kill(PerlProc_getpid(), signo); |
ff68c719 | 2766 | return oldsig; |
2767 | } | |
2768 | ||
2769 | int | |
864dbfa3 | 2770 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2771 | { |
39f1703b | 2772 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2773 | /* only "parent" interpreter can diddle signals */ |
2774 | if (PL_curinterp != aTHX) | |
2775 | return -1; | |
2776 | #endif | |
6ad3d225 | 2777 | *save = PerlProc_signal(signo, handler); |
8aad04aa | 2778 | return (*save == (Sighandler_t) SIG_ERR) ? -1 : 0; |
ff68c719 | 2779 | } |
2780 | ||
2781 | int | |
864dbfa3 | 2782 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2783 | { |
39f1703b | 2784 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2785 | /* only "parent" interpreter can diddle signals */ |
2786 | if (PL_curinterp != aTHX) | |
2787 | return -1; | |
2788 | #endif | |
8aad04aa | 2789 | return (PerlProc_signal(signo, *save) == (Sighandler_t) SIG_ERR) ? -1 : 0; |
ff68c719 | 2790 | } |
2791 | ||
2792 | #endif /* !HAS_SIGACTION */ | |
64ca3a65 | 2793 | #endif /* !PERL_MICRO */ |
ff68c719 | 2794 | |
5f05dabc | 2795 | /* VMS' my_pclose() is in VMS.c; same with OS/2 */ |
53f73940 | 2796 | #if (!defined(DOSISH) || defined(HAS_FORK)) && !defined(VMS) && !defined(__LIBCATAMOUNT__) && !defined(__amigaos4__) |
79072805 | 2797 | I32 |
864dbfa3 | 2798 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a687059c | 2799 | { |
a687059c | 2800 | int status; |
a0d0e21e | 2801 | SV **svp; |
d8a83dd3 | 2802 | Pid_t pid; |
2e0cfa16 | 2803 | Pid_t pid2 = 0; |
03136e13 | 2804 | bool close_failed; |
4ee39169 | 2805 | dSAVEDERRNO; |
2e0cfa16 | 2806 | const int fd = PerlIO_fileno(ptr); |
e9d373c4 TC |
2807 | bool should_wait; |
2808 | ||
2809 | svp = av_fetch(PL_fdpid,fd,TRUE); | |
2810 | pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1; | |
2811 | SvREFCNT_dec(*svp); | |
2812 | *svp = NULL; | |
2e0cfa16 | 2813 | |
97cb92d6 | 2814 | #if defined(USE_PERLIO) |
2e0cfa16 FC |
2815 | /* Find out whether the refcount is low enough for us to wait for the |
2816 | child proc without blocking. */ | |
e9d373c4 | 2817 | should_wait = PerlIOUnix_refcnt(fd) == 1 && pid > 0; |
b6ae43b7 | 2818 | #else |
e9d373c4 | 2819 | should_wait = pid > 0; |
b6ae43b7 | 2820 | #endif |
a687059c | 2821 | |
ddcf38b7 IZ |
2822 | #ifdef OS2 |
2823 | if (pid == -1) { /* Opened by popen. */ | |
2824 | return my_syspclose(ptr); | |
2825 | } | |
a1d180c4 | 2826 | #endif |
f1618b10 CS |
2827 | close_failed = (PerlIO_close(ptr) == EOF); |
2828 | SAVE_ERRNO; | |
2e0cfa16 | 2829 | if (should_wait) do { |
1d3434b8 GS |
2830 | pid2 = wait4pid(pid, &status, 0); |
2831 | } while (pid2 == -1 && errno == EINTR); | |
03136e13 | 2832 | if (close_failed) { |
4ee39169 | 2833 | RESTORE_ERRNO; |
03136e13 CS |
2834 | return -1; |
2835 | } | |
2e0cfa16 FC |
2836 | return( |
2837 | should_wait | |
2838 | ? pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status) | |
2839 | : 0 | |
2840 | ); | |
20188a90 | 2841 | } |
8ad758c7 | 2842 | #elif defined(__LIBCATAMOUNT__) |
9c12f1e5 RGS |
2843 | I32 |
2844 | Perl_my_pclose(pTHX_ PerlIO *ptr) | |
2845 | { | |
2846 | return -1; | |
2847 | } | |
4633a7c4 LW |
2848 | #endif /* !DOSISH */ |
2849 | ||
e37778c2 | 2850 | #if (!defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(NETWARE)) && !defined(__LIBCATAMOUNT__) |
79072805 | 2851 | I32 |
d8a83dd3 | 2852 | Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) |
20188a90 | 2853 | { |
27da23d5 | 2854 | I32 result = 0; |
7918f24d | 2855 | PERL_ARGS_ASSERT_WAIT4PID; |
ca0c25f6 | 2856 | #ifdef PERL_USES_PL_PIDSTATUS |
d4c02743 TC |
2857 | if (!pid) { |
2858 | /* PERL_USES_PL_PIDSTATUS is only defined when neither | |
2859 | waitpid() nor wait4() is available, or on OS/2, which | |
2860 | doesn't appear to support waiting for a progress group | |
2861 | member, so we can only treat a 0 pid as an unknown child. | |
2862 | */ | |
2863 | errno = ECHILD; | |
2864 | return -1; | |
2865 | } | |
b7953727 | 2866 | { |
3aed30dc | 2867 | if (pid > 0) { |
12072db5 NC |
2868 | /* The keys in PL_pidstatus are now the raw 4 (or 8) bytes of the |
2869 | pid, rather than a string form. */ | |
c4420975 | 2870 | SV * const * const svp = hv_fetch(PL_pidstatus,(const char*) &pid,sizeof(Pid_t),FALSE); |
3aed30dc HS |
2871 | if (svp && *svp != &PL_sv_undef) { |
2872 | *statusp = SvIVX(*svp); | |
12072db5 NC |
2873 | (void)hv_delete(PL_pidstatus,(const char*) &pid,sizeof(Pid_t), |
2874 | G_DISCARD); | |
3aed30dc HS |
2875 | return pid; |
2876 | } | |
2877 | } | |
2878 | else { | |
2879 | HE *entry; | |
2880 | ||
2881 | hv_iterinit(PL_pidstatus); | |
2882 | if ((entry = hv_iternext(PL_pidstatus))) { | |
c4420975 | 2883 | SV * const sv = hv_iterval(PL_pidstatus,entry); |
7ea75b61 | 2884 | I32 len; |
0bcc34c2 | 2885 | const char * const spid = hv_iterkey(entry,&len); |
27da23d5 | 2886 | |
12072db5 NC |
2887 | assert (len == sizeof(Pid_t)); |
2888 | memcpy((char *)&pid, spid, len); | |
3aed30dc | 2889 | *statusp = SvIVX(sv); |
7b9a3241 NC |
2890 | /* The hash iterator is currently on this entry, so simply |
2891 | calling hv_delete would trigger the lazy delete, which on | |
f6bab5f6 | 2892 | aggregate does more work, because next call to hv_iterinit() |
7b9a3241 NC |
2893 | would spot the flag, and have to call the delete routine, |
2894 | while in the meantime any new entries can't re-use that | |
2895 | memory. */ | |
2896 | hv_iterinit(PL_pidstatus); | |
7ea75b61 | 2897 | (void)hv_delete(PL_pidstatus,spid,len,G_DISCARD); |
3aed30dc HS |
2898 | return pid; |
2899 | } | |
20188a90 LW |
2900 | } |
2901 | } | |
68a29c53 | 2902 | #endif |
79072805 | 2903 | #ifdef HAS_WAITPID |
367f3c24 IZ |
2904 | # ifdef HAS_WAITPID_RUNTIME |
2905 | if (!HAS_WAITPID_RUNTIME) | |
2906 | goto hard_way; | |
2907 | # endif | |
cddd4526 | 2908 | result = PerlProc_waitpid(pid,statusp,flags); |
dfcfdb64 | 2909 | goto finish; |
367f3c24 IZ |
2910 | #endif |
2911 | #if !defined(HAS_WAITPID) && defined(HAS_WAIT4) | |
d4c02743 | 2912 | result = wait4(pid,statusp,flags,NULL); |
dfcfdb64 | 2913 | goto finish; |
367f3c24 | 2914 | #endif |
ca0c25f6 | 2915 | #ifdef PERL_USES_PL_PIDSTATUS |
27da23d5 | 2916 | #if defined(HAS_WAITPID) && defined(HAS_WAITPID_RUNTIME) |
367f3c24 | 2917 | hard_way: |
27da23d5 | 2918 | #endif |
a0d0e21e | 2919 | { |
a0d0e21e | 2920 | if (flags) |
cea2e8a9 | 2921 | Perl_croak(aTHX_ "Can't do waitpid with flags"); |
a0d0e21e | 2922 | else { |
76e3520e | 2923 | while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0) |
a0d0e21e LW |
2924 | pidgone(result,*statusp); |
2925 | if (result < 0) | |
2926 | *statusp = -1; | |
2927 | } | |
a687059c LW |
2928 | } |
2929 | #endif | |
27da23d5 | 2930 | #if defined(HAS_WAITPID) || defined(HAS_WAIT4) |
dfcfdb64 | 2931 | finish: |
27da23d5 | 2932 | #endif |
cddd4526 NIS |
2933 | if (result < 0 && errno == EINTR) { |
2934 | PERL_ASYNC_CHECK(); | |
48dbb59e | 2935 | errno = EINTR; /* reset in case a signal handler changed $! */ |
cddd4526 NIS |
2936 | } |
2937 | return result; | |
a687059c | 2938 | } |
2986a63f | 2939 | #endif /* !DOSISH || OS2 || WIN32 || NETWARE */ |
a687059c | 2940 | |
ca0c25f6 | 2941 | #ifdef PERL_USES_PL_PIDSTATUS |
7c0587c8 | 2942 | void |
ed4173ef | 2943 | S_pidgone(pTHX_ Pid_t pid, int status) |
a687059c | 2944 | { |
eb578fdb | 2945 | SV *sv; |
a687059c | 2946 | |
12072db5 | 2947 | sv = *hv_fetch(PL_pidstatus,(const char*)&pid,sizeof(Pid_t),TRUE); |
862a34c6 | 2948 | SvUPGRADE(sv,SVt_IV); |
45977657 | 2949 | SvIV_set(sv, status); |
20188a90 | 2950 | return; |
a687059c | 2951 | } |
ca0c25f6 | 2952 | #endif |
a687059c | 2953 | |
6de23f80 | 2954 | #if defined(OS2) |
7c0587c8 | 2955 | int pclose(); |
ddcf38b7 IZ |
2956 | #ifdef HAS_FORK |
2957 | int /* Cannot prototype with I32 | |
2958 | in os2ish.h. */ | |
ba106d47 | 2959 | my_syspclose(PerlIO *ptr) |
ddcf38b7 | 2960 | #else |
79072805 | 2961 | I32 |
864dbfa3 | 2962 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a1d180c4 | 2963 | #endif |
a687059c | 2964 | { |
760ac839 | 2965 | /* Needs work for PerlIO ! */ |
c4420975 | 2966 | FILE * const f = PerlIO_findFILE(ptr); |
7452cf6a | 2967 | const I32 result = pclose(f); |
2b96b0a5 JH |
2968 | PerlIO_releaseFILE(ptr,f); |
2969 | return result; | |
2970 | } | |
2971 | #endif | |
2972 | ||
933fea7f | 2973 | #if defined(DJGPP) |
2b96b0a5 JH |
2974 | int djgpp_pclose(); |
2975 | I32 | |
2976 | Perl_my_pclose(pTHX_ PerlIO *ptr) | |
2977 | { | |
2978 | /* Needs work for PerlIO ! */ | |
c4420975 | 2979 | FILE * const f = PerlIO_findFILE(ptr); |
2b96b0a5 | 2980 | I32 result = djgpp_pclose(f); |
933fea7f | 2981 | result = (result << 8) & 0xff00; |
760ac839 LW |
2982 | PerlIO_releaseFILE(ptr,f); |
2983 | return result; | |
a687059c | 2984 | } |
7c0587c8 | 2985 | #endif |
9f68db38 | 2986 | |
16fa5c11 | 2987 | #define PERL_REPEATCPY_LINEAR 4 |
9f68db38 | 2988 | void |
5aaab254 | 2989 | Perl_repeatcpy(char *to, const char *from, I32 len, IV count) |
9f68db38 | 2990 | { |
7918f24d NC |
2991 | PERL_ARGS_ASSERT_REPEATCPY; |
2992 | ||
223f01db KW |
2993 | assert(len >= 0); |
2994 | ||
2709980d | 2995 | if (count < 0) |
d1decf2b | 2996 | croak_memory_wrap(); |
2709980d | 2997 | |
16fa5c11 VP |
2998 | if (len == 1) |
2999 | memset(to, *from, count); | |
3000 | else if (count) { | |
eb578fdb | 3001 | char *p = to; |
26e1303d | 3002 | IV items, linear, half; |
16fa5c11 VP |
3003 | |
3004 | linear = count < PERL_REPEATCPY_LINEAR ? count : PERL_REPEATCPY_LINEAR; | |
3005 | for (items = 0; items < linear; ++items) { | |
eb578fdb | 3006 | const char *q = from; |
26e1303d | 3007 | IV todo; |
16fa5c11 VP |
3008 | for (todo = len; todo > 0; todo--) |
3009 | *p++ = *q++; | |
3010 | } | |
3011 | ||
3012 | half = count / 2; | |
3013 | while (items <= half) { | |
26e1303d | 3014 | IV size = items * len; |
16fa5c11 VP |
3015 | memcpy(p, to, size); |
3016 | p += size; | |
3017 | items *= 2; | |
9f68db38 | 3018 | } |
16fa5c11 VP |
3019 | |
3020 | if (count > items) | |
3021 | memcpy(p, to, (count - items) * len); | |
9f68db38 LW |
3022 | } |
3023 | } | |
0f85fab0 | 3024 | |
fe14fcc3 | 3025 | #ifndef HAS_RENAME |
79072805 | 3026 | I32 |
4373e329 | 3027 | Perl_same_dirent(pTHX_ const char *a, const char *b) |
62b28dd9 | 3028 | { |
93a17b20 LW |
3029 | char *fa = strrchr(a,'/'); |
3030 | char *fb = strrchr(b,'/'); | |
c623ac67 GS |
3031 | Stat_t tmpstatbuf1; |
3032 | Stat_t tmpstatbuf2; | |
c4420975 | 3033 | SV * const tmpsv = sv_newmortal(); |
62b28dd9 | 3034 | |
7918f24d NC |
3035 | PERL_ARGS_ASSERT_SAME_DIRENT; |
3036 | ||
62b28dd9 LW |
3037 | if (fa) |
3038 | fa++; | |
3039 | else | |
3040 | fa = a; | |
3041 | if (fb) | |
3042 | fb++; | |
3043 | else | |
3044 | fb = b; | |
3045 | if (strNE(a,b)) | |
3046 | return FALSE; | |
3047 | if (fa == a) | |
76f68e9b | 3048 | sv_setpvs(tmpsv, "."); |
62b28dd9 | 3049 | else |
46fc3d4c | 3050 | sv_setpvn(tmpsv, a, fa - a); |
95a20fc0 | 3051 | if (PerlLIO_stat(SvPVX_const(tmpsv), &tmpstatbuf1) < 0) |
62b28dd9 LW |
3052 | return FALSE; |
3053 | if (fb == b) | |
76f68e9b | 3054 | sv_setpvs(tmpsv, "."); |
62b28dd9 | 3055 | else |
46fc3d4c | 3056 | sv_setpvn(tmpsv, b, fb - b); |
95a20fc0 | 3057 | if (PerlLIO_stat(SvPVX_const(tmpsv), &tmpstatbuf2) < 0) |
62b28dd9 LW |
3058 | return FALSE; |
3059 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
3060 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
3061 | } | |
fe14fcc3 LW |
3062 | #endif /* !HAS_RENAME */ |
3063 | ||
491527d0 | 3064 | char* |
7f315aed NC |
3065 | Perl_find_script(pTHX_ const char *scriptname, bool dosearch, |
3066 | const char *const *const search_ext, I32 flags) | |
491527d0 | 3067 | { |
bd61b366 SS |
3068 | const char *xfound = NULL; |
3069 | char *xfailed = NULL; | |
0f31cffe | 3070 | char tmpbuf[MAXPATHLEN]; |
eb578fdb | 3071 | char *s; |
5f74f29c | 3072 | I32 len = 0; |
491527d0 | 3073 | int retval; |
39a02377 | 3074 | char *bufend; |
7c458fae | 3075 | #if defined(DOSISH) && !defined(OS2) |
491527d0 GS |
3076 | # define SEARCH_EXTS ".bat", ".cmd", NULL |
3077 | # define MAX_EXT_LEN 4 | |
3078 | #endif | |
3079 | #ifdef OS2 | |
3080 | # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL | |
3081 | # define MAX_EXT_LEN 4 | |
3082 | #endif | |
3083 | #ifdef VMS | |
3084 | # define SEARCH_EXTS ".pl", ".com", NULL | |
3085 | # define MAX_EXT_LEN 4 | |
3086 | #endif | |
3087 | /* additional extensions to try in each dir if scriptname not found */ | |
3088 | #ifdef SEARCH_EXTS | |
0bcc34c2 | 3089 | static const char *const exts[] = { SEARCH_EXTS }; |
7f315aed | 3090 | const char *const *const ext = search_ext ? search_ext : exts; |
491527d0 | 3091 | int extidx = 0, i = 0; |
bd61b366 | 3092 | const char *curext = NULL; |
491527d0 | 3093 | #else |
53c1dcc0 | 3094 | PERL_UNUSED_ARG(search_ext); |
491527d0 GS |
3095 | # define MAX_EXT_LEN 0 |
3096 | #endif | |
3097 | ||
7918f24d NC |
3098 | PERL_ARGS_ASSERT_FIND_SCRIPT; |
3099 | ||
491527d0 GS |
3100 | /* |
3101 | * If dosearch is true and if scriptname does not contain path | |
3102 | * delimiters, search the PATH for scriptname. | |
3103 | * | |
3104 | * If SEARCH_EXTS is also defined, will look for each | |
3105 | * scriptname{SEARCH_EXTS} whenever scriptname is not found | |
3106 | * while searching the PATH. | |
3107 | * | |
3108 | * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search | |
3109 | * proceeds as follows: | |
3110 | * If DOSISH or VMSISH: | |
3111 | * + look for ./scriptname{,.foo,.bar} | |
3112 | * + search the PATH for scriptname{,.foo,.bar} | |
3113 | * | |
3114 | * If !DOSISH: | |
3115 | * + look *only* in the PATH for scriptname{,.foo,.bar} (note | |
3116 | * this will not look in '.' if it's not in the PATH) | |
3117 | */ | |
84486fc6 | 3118 | tmpbuf[0] = '\0'; |
491527d0 GS |
3119 | |
3120 | #ifdef VMS | |
3121 | # ifdef ALWAYS_DEFTYPES | |
3122 | len = strlen(scriptname); | |
3123 | if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { | |
c4420975 | 3124 | int idx = 0, deftypes = 1; |
491527d0 GS |
3125 | bool seen_dot = 1; |
3126 | ||
bd61b366 | 3127 | const int hasdir = !dosearch || (strpbrk(scriptname,":[</") != NULL); |
491527d0 GS |
3128 | # else |
3129 | if (dosearch) { | |
c4420975 | 3130 | int idx = 0, deftypes = 1; |
491527d0 GS |
3131 | bool seen_dot = 1; |
3132 | ||
bd61b366 | 3133 | const int hasdir = (strpbrk(scriptname,":[</") != NULL); |
491527d0 GS |
3134 | # endif |
3135 | /* The first time through, just add SEARCH_EXTS to whatever we | |
3136 | * already have, so we can check for default file types. */ | |
3137 | while (deftypes || | |
84486fc6 | 3138 | (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) ) |
491527d0 | 3139 | { |
2aa28b86 | 3140 | Stat_t statbuf; |
491527d0 GS |
3141 | if (deftypes) { |
3142 | deftypes = 0; | |
84486fc6 | 3143 | *tmpbuf = '\0'; |
491527d0 | 3144 | } |
84486fc6 GS |
3145 | if ((strlen(tmpbuf) + strlen(scriptname) |
3146 | + MAX_EXT_LEN) >= sizeof tmpbuf) | |
491527d0 | 3147 | continue; /* don't search dir with too-long name */ |
6fca0082 | 3148 | my_strlcat(tmpbuf, scriptname, sizeof(tmpbuf)); |
491527d0 GS |
3149 | #else /* !VMS */ |
3150 | ||
3151 | #ifdef DOSISH | |
3152 | if (strEQ(scriptname, "-")) | |
3153 | dosearch = 0; | |
3154 | if (dosearch) { /* Look in '.' first. */ | |
fe2774ed | 3155 | const char *cur = scriptname; |
491527d0 GS |
3156 | #ifdef SEARCH_EXTS |
3157 | if ((curext = strrchr(scriptname,'.'))) /* possible current ext */ | |
3158 | while (ext[i]) | |
3159 | if (strEQ(ext[i++],curext)) { | |
3160 | extidx = -1; /* already has an ext */ | |
3161 | break; | |
3162 | } | |
3163 | do { | |
3164 | #endif | |
3165 | DEBUG_p(PerlIO_printf(Perl_debug_log, | |
3166 | "Looking for %s\n",cur)); | |
45a23732 | 3167 | { |
0cc19a43 | 3168 | Stat_t statbuf; |
45a23732 DD |
3169 | if (PerlLIO_stat(cur,&statbuf) >= 0 |
3170 | && !S_ISDIR(statbuf.st_mode)) { | |
3171 | dosearch = 0; | |
3172 | scriptname = cur; | |
491527d0 | 3173 | #ifdef SEARCH_EXTS |
45a23732 | 3174 | break; |
491527d0 | 3175 | #endif |
45a23732 | 3176 | } |
491527d0 GS |
3177 | } |
3178 | #ifdef SEARCH_EXTS | |
3179 | if (cur == scriptname) { | |
3180 | len = strlen(scriptname); | |
84486fc6 | 3181 | if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf)) |
491527d0 | 3182 | break; |
9e4425f7 SH |
3183 | my_strlcpy(tmpbuf, scriptname, sizeof(tmpbuf)); |
3184 | cur = tmpbuf; | |
491527d0 GS |
3185 | } |
3186 | } while (extidx >= 0 && ext[extidx] /* try an extension? */ | |
6fca0082 | 3187 | && my_strlcpy(tmpbuf+len, ext[extidx++], sizeof(tmpbuf) - len)); |
491527d0 GS |
3188 | #endif |
3189 | } | |
3190 | #endif | |
3191 | ||
3192 | if (dosearch && !strchr(scriptname, '/') | |
3193 | #ifdef DOSISH | |
3194 | && !strchr(scriptname, '\\') | |
3195 | #endif | |
cd39f2b6 | 3196 | && (s = PerlEnv_getenv("PATH"))) |
cd39f2b6 | 3197 | { |
491527d0 | 3198 | bool seen_dot = 0; |
92f0c265 | 3199 | |
39a02377 DM |
3200 | bufend = s + strlen(s); |
3201 | while (s < bufend) { | |
45a23732 | 3202 | Stat_t statbuf; |
7c458fae | 3203 | # ifdef DOSISH |
491527d0 | 3204 | for (len = 0; *s |
491527d0 | 3205 | && *s != ';'; len++, s++) { |
84486fc6 GS |
3206 | if (len < sizeof tmpbuf) |
3207 | tmpbuf[len] = *s; | |
491527d0 | 3208 | } |
84486fc6 GS |
3209 | if (len < sizeof tmpbuf) |
3210 | tmpbuf[len] = '\0'; | |
7c458fae | 3211 | # else |
e80af1fd TC |
3212 | s = delimcpy_no_escape(tmpbuf, tmpbuf + sizeof tmpbuf, s, bufend, |
3213 | ':', &len); | |
7c458fae | 3214 | # endif |
39a02377 | 3215 | if (s < bufend) |
491527d0 | 3216 | s++; |
84486fc6 | 3217 | if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf) |
491527d0 GS |
3218 | continue; /* don't search dir with too-long name */ |
3219 | if (len | |
7c458fae | 3220 | # ifdef DOSISH |
84486fc6 GS |
3221 | && tmpbuf[len - 1] != '/' |
3222 | && tmpbuf[len - 1] != '\\' | |
490a0e98 | 3223 | # endif |
491527d0 | 3224 | ) |
84486fc6 GS |
3225 | tmpbuf[len++] = '/'; |
3226 | if (len == 2 && tmpbuf[0] == '.') | |
491527d0 | 3227 | seen_dot = 1; |
28f0d0ec | 3228 | (void)my_strlcpy(tmpbuf + len, scriptname, sizeof(tmpbuf) - len); |
491527d0 GS |
3229 | #endif /* !VMS */ |
3230 | ||
3231 | #ifdef SEARCH_EXTS | |
84486fc6 | 3232 | len = strlen(tmpbuf); |
491527d0 GS |
3233 | if (extidx > 0) /* reset after previous loop */ |
3234 | extidx = 0; | |
3235 | do { | |
3236 | #endif | |
84486fc6 | 3237 | DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf)); |
45a23732 DD |
3238 | retval = PerlLIO_stat(tmpbuf,&statbuf); |
3239 | if (S_ISDIR(statbuf.st_mode)) { | |
017f25f1 IZ |
3240 | retval = -1; |
3241 | } | |
491527d0 GS |
3242 | #ifdef SEARCH_EXTS |
3243 | } while ( retval < 0 /* not there */ | |
3244 | && extidx>=0 && ext[extidx] /* try an extension? */ | |
6fca0082 | 3245 | && my_strlcpy(tmpbuf+len, ext[extidx++], sizeof(tmpbuf) - len) |
491527d0 GS |
3246 | ); |
3247 | #endif | |
3248 | if (retval < 0) | |
3249 | continue; | |
45a23732 DD |
3250 | if (S_ISREG(statbuf.st_mode) |
3251 | && cando(S_IRUSR,TRUE,&statbuf) | |
e37778c2 | 3252 | #if !defined(DOSISH) |
45a23732 | 3253 | && cando(S_IXUSR,TRUE,&statbuf) |
491527d0 GS |
3254 | #endif |
3255 | ) | |
3256 | { | |
3aed30dc | 3257 | xfound = tmpbuf; /* bingo! */ |
491527d0 GS |
3258 | break; |
3259 | } | |
3260 | if (!xfailed) | |
84486fc6 | 3261 | xfailed = savepv(tmpbuf); |
491527d0 GS |
3262 | } |
3263 | #ifndef DOSISH | |
45a23732 DD |
3264 | { |
3265 | Stat_t statbuf; | |
3266 | if (!xfound && !seen_dot && !xfailed && | |
3267 | (PerlLIO_stat(scriptname,&statbuf) < 0 | |
3268 | || S_ISDIR(statbuf.st_mode))) | |
3269 | #endif | |
3270 | seen_dot = 1; /* Disable message. */ | |
3271 | #ifndef DOSISH | |
3272 | } | |
491527d0 | 3273 | #endif |
9ccb31f9 GS |
3274 | if (!xfound) { |
3275 | if (flags & 1) { /* do or die? */ | |
6ad282c7 | 3276 | /* diag_listed_as: Can't execute %s */ |
3aed30dc | 3277 | Perl_croak(aTHX_ "Can't %s %s%s%s", |
9ccb31f9 GS |
3278 | (xfailed ? "execute" : "find"), |
3279 | (xfailed ? xfailed : scriptname), | |
3280 | (xfailed ? "" : " on PATH"), | |
3281 | (xfailed || seen_dot) ? "" : ", '.' not in PATH"); | |
3282 | } | |
bd61b366 | 3283 | scriptname = NULL; |
9ccb31f9 | 3284 | } |
43c5f42d | 3285 | Safefree(xfailed); |
491527d0 GS |
3286 | scriptname = xfound; |
3287 | } | |
bd61b366 | 3288 | return (scriptname ? savepv(scriptname) : NULL); |
491527d0 GS |
3289 | } |
3290 | ||
ba869deb GS |
3291 | #ifndef PERL_GET_CONTEXT_DEFINED |
3292 | ||
3293 | void * | |
3294 | Perl_get_context(void) | |
3295 | { | |
3db8f154 | 3296 | #if defined(USE_ITHREADS) |
20b7effb | 3297 | dVAR; |
ba869deb GS |
3298 | # ifdef OLD_PTHREADS_API |
3299 | pthread_addr_t t; | |
5637ef5b NC |
3300 | int error = pthread_getspecific(PL_thr_key, &t) |
3301 | if (error) | |
3302 | Perl_croak_nocontext("panic: pthread_getspecific, error=%d", error); | |
ba869deb | 3303 | return (void*)t; |
8ad758c7 | 3304 | # elif defined(I_MACH_CTHREADS) |
8b8b35ab | 3305 | return (void*)cthread_data(cthread_self()); |
8ad758c7 | 3306 | # else |
8b8b35ab | 3307 | return (void*)PTHREAD_GETSPECIFIC(PL_thr_key); |
c44d3fdb | 3308 | # endif |
ba869deb GS |
3309 | #else |
3310 | return (void*)NULL; | |
3311 | #endif | |
3312 | } | |
3313 | ||
3314 | void | |
3315 | Perl_set_context(void *t) | |
3316 | { | |
20b7effb | 3317 | #if defined(USE_ITHREADS) |
8772537c | 3318 | dVAR; |
20b7effb | 3319 | #endif |
7918f24d | 3320 | PERL_ARGS_ASSERT_SET_CONTEXT; |
3db8f154 | 3321 | #if defined(USE_ITHREADS) |
c44d3fdb GS |
3322 | # ifdef I_MACH_CTHREADS |
3323 | cthread_set_data(cthread_self(), t); | |
3324 | # else | |
5637ef5b NC |
3325 | { |
3326 | const int error = pthread_setspecific(PL_thr_key, t); | |
3327 | if (error) | |
3328 | Perl_croak_nocontext("panic: pthread_setspecific, error=%d", error); | |
3329 | } | |
c44d3fdb | 3330 | # endif |
b464bac0 | 3331 | #else |
8772537c | 3332 | PERL_UNUSED_ARG(t); |
ba869deb GS |
3333 | #endif |
3334 | } | |
3335 | ||
3336 | #endif /* !PERL_GET_CONTEXT_DEFINED */ | |
491527d0 | 3337 | |
27da23d5 | 3338 | #if defined(PERL_GLOBAL_STRUCT) && !defined(PERL_GLOBAL_STRUCT_PRIVATE) |
22239a37 | 3339 | struct perl_vars * |
864dbfa3 | 3340 | Perl_GetVars(pTHX) |
22239a37 | 3341 | { |
23491f1d JH |
3342 | PERL_UNUSED_CONTEXT; |
3343 | return &PL_Vars; | |
22239a37 | 3344 | } |
31fb1209 NIS |
3345 | #endif |
3346 | ||
1cb0ed9b | 3347 | char ** |
864dbfa3 | 3348 | Perl_get_op_names(pTHX) |
31fb1209 | 3349 | { |
96a5add6 AL |
3350 | PERL_UNUSED_CONTEXT; |
3351 | return (char **)PL_op_name; | |
31fb1209 NIS |
3352 | } |
3353 | ||
1cb0ed9b | 3354 | char ** |
864dbfa3 | 3355 | Perl_get_op_descs(pTHX) |
31fb1209 | 3356 | { |
96a5add6 AL |
3357 | PERL_UNUSED_CONTEXT; |
3358 | return (char **)PL_op_desc; | |
31fb1209 | 3359 | } |
9e6b2b00 | 3360 | |
e1ec3a88 | 3361 | const char * |
864dbfa3 | 3362 | Perl_get_no_modify(pTHX) |
9e6b2b00 | 3363 | { |
96a5add6 AL |
3364 | PERL_UNUSED_CONTEXT; |
3365 | return PL_no_modify; | |
9e6b2b00 GS |
3366 | } |
3367 | ||
3368 | U32 * | |
864dbfa3 | 3369 | Perl_get_opargs(pTHX) |
9e6b2b00 | 3370 | { |
96a5add6 AL |
3371 | PERL_UNUSED_CONTEXT; |
3372 | return (U32 *)PL_opargs; | |
9e6b2b00 | 3373 | } |
51aa15f3 | 3374 | |
0cb96387 GS |
3375 | PPADDR_t* |
3376 | Perl_get_ppaddr(pTHX) | |
3377 | { | |
96a5add6 AL |
3378 | dVAR; |
3379 | PERL_UNUSED_CONTEXT; | |
3380 | return (PPADDR_t*)PL_ppaddr; | |
0cb96387 GS |
3381 | } |
3382 | ||
a6c40364 GS |
3383 | #ifndef HAS_GETENV_LEN |
3384 | char * | |
bf4acbe4 | 3385 | Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len) |
a6c40364 | 3386 | { |
8772537c | 3387 | char * const env_trans = PerlEnv_getenv(env_elem); |
96a5add6 | 3388 | PERL_UNUSED_CONTEXT; |
7918f24d | 3389 | PERL_ARGS_ASSERT_GETENV_LEN; |
a6c40364 GS |
3390 | if (env_trans) |
3391 | *len = strlen(env_trans); | |
3392 | return env_trans; | |
f675dbe5 CB |
3393 | } |
3394 | #endif | |
3395 | ||
dc9e4912 GS |
3396 | |
3397 | MGVTBL* | |
864dbfa3 | 3398 | Perl_get_vtbl(pTHX_ int vtbl_id) |
dc9e4912 | 3399 | { |
96a5add6 | 3400 | PERL_UNUSED_CONTEXT; |
dc9e4912 | 3401 | |
c7fdacb9 | 3402 | return (vtbl_id < 0 || vtbl_id >= magic_vtable_max) |
31114fe9 | 3403 | ? NULL : (MGVTBL*)PL_magic_vtables + vtbl_id; |
dc9e4912 GS |
3404 | } |
3405 | ||
767df6a1 | 3406 | I32 |
864dbfa3 | 3407 | Perl_my_fflush_all(pTHX) |
767df6a1 | 3408 | { |
97cb92d6 | 3409 | #if defined(USE_PERLIO) || defined(FFLUSH_NULL) |
ce720889 | 3410 | return PerlIO_flush(NULL); |
767df6a1 | 3411 | #else |
8fbdfb7c | 3412 | # if defined(HAS__FWALK) |
f13a2bc0 | 3413 | extern int fflush(FILE *); |
74cac757 JH |
3414 | /* undocumented, unprototyped, but very useful BSDism */ |
3415 | extern void _fwalk(int (*)(FILE *)); | |
8fbdfb7c | 3416 | _fwalk(&fflush); |
74cac757 | 3417 | return 0; |
8fa7f367 | 3418 | # else |
8fbdfb7c | 3419 | # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY) |
8fa7f367 | 3420 | long open_max = -1; |
8fbdfb7c | 3421 | # ifdef PERL_FFLUSH_ALL_FOPEN_MAX |
d2201af2 | 3422 | open_max = PERL_FFLUSH_ALL_FOPEN_MAX; |
8ad758c7 | 3423 | # elif defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX) |
767df6a1 | 3424 | open_max = sysconf(_SC_OPEN_MAX); |
8ad758c7 | 3425 | # elif defined(FOPEN_MAX) |
74cac757 | 3426 | open_max = FOPEN_MAX; |
8ad758c7 | 3427 | # elif defined(OPEN_MAX) |
74cac757 | 3428 | open_max = OPEN_MAX; |
8ad758c7 | 3429 | # elif defined(_NFILE) |
d2201af2 | 3430 | open_max = _NFILE; |
8ad758c7 | 3431 | # endif |
767df6a1 JH |
3432 | if (open_max > 0) { |
3433 | long i; | |
3434 | for (i = 0; i < open_max; i++) | |
d2201af2 AD |
3435 | if (STDIO_STREAM_ARRAY[i]._file >= 0 && |
3436 | STDIO_STREAM_ARRAY[i]._file < open_max && | |
3437 | STDIO_STREAM_ARRAY[i]._flag) | |
3438 | PerlIO_flush(&STDIO_STREAM_ARRAY[i]); | |
767df6a1 JH |
3439 | return 0; |
3440 | } | |
8fbdfb7c | 3441 | # endif |
93189314 | 3442 | SETERRNO(EBADF,RMS_IFI); |
767df6a1 | 3443 | return EOF; |
74cac757 | 3444 | # endif |
767df6a1 JH |
3445 | #endif |
3446 | } | |
097ee67d | 3447 | |
69282e91 | 3448 | void |
45219de6 | 3449 | Perl_report_wrongway_fh(pTHX_ const GV *gv, const char have) |
a5390457 NC |
3450 | { |
3451 | if (ckWARN(WARN_IO)) { | |
0223a801 | 3452 | HEK * const name |
c6e4ff34 | 3453 | = gv && (isGV_with_GP(gv)) |
0223a801 | 3454 | ? GvENAME_HEK((gv)) |
3b46b707 | 3455 | : NULL; |
a5390457 NC |
3456 | const char * const direction = have == '>' ? "out" : "in"; |
3457 | ||
b3c81598 | 3458 | if (name && HEK_LEN(name)) |
a5390457 | 3459 | Perl_warner(aTHX_ packWARN(WARN_IO), |
147e3846 | 3460 | "Filehandle %" HEKf " opened only for %sput", |
10bafe90 | 3461 | HEKfARG(name), direction); |
a5390457 NC |
3462 | else |
3463 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
3464 | "Filehandle opened only for %sput", direction); | |
3465 | } | |
3466 | } | |
3467 | ||
3468 | void | |
831e4cc3 | 3469 | Perl_report_evil_fh(pTHX_ const GV *gv) |
bc37a18f | 3470 | { |
65820a28 | 3471 | const IO *io = gv ? GvIO(gv) : NULL; |
831e4cc3 | 3472 | const PERL_BITFIELD16 op = PL_op->op_type; |
a5390457 NC |
3473 | const char *vile; |
3474 | I32 warn_type; | |
3475 | ||
65820a28 | 3476 | if (io && IoTYPE(io) == IoTYPE_CLOSED) { |
a5390457 NC |
3477 | vile = "closed"; |
3478 | warn_type = WARN_CLOSED; | |
2dd78f96 JH |
3479 | } |
3480 | else { | |
a5390457 NC |
3481 | vile = "unopened"; |
3482 | warn_type = WARN_UNOPENED; | |
3483 | } | |
3484 | ||
3485 | if (ckWARN(warn_type)) { | |
3b46b707 | 3486 | SV * const name |
5c5c5f45 | 3487 | = gv && isGV_with_GP(gv) && GvENAMELEN(gv) ? |
3b46b707 | 3488 | sv_2mortal(newSVhek(GvENAME_HEK(gv))) : NULL; |
a5390457 NC |
3489 | const char * const pars = |
3490 | (const char *)(OP_IS_FILETEST(op) ? "" : "()"); | |
3491 | const char * const func = | |
3492 | (const char *) | |
d955f84c FC |
3493 | (op == OP_READLINE || op == OP_RCATLINE |
3494 | ? "readline" : /* "<HANDLE>" not nice */ | |
a5390457 | 3495 | op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */ |
a5390457 NC |
3496 | PL_op_desc[op]); |
3497 | const char * const type = | |
3498 | (const char *) | |
65820a28 | 3499 | (OP_IS_SOCKET(op) || (io && IoTYPE(io) == IoTYPE_SOCKET) |
a5390457 | 3500 | ? "socket" : "filehandle"); |
1e00d6e9 | 3501 | const bool have_name = name && SvCUR(name); |
65d99836 | 3502 | Perl_warner(aTHX_ packWARN(warn_type), |
147e3846 | 3503 | "%s%s on %s %s%s%" SVf, func, pars, vile, type, |
65d99836 FC |
3504 | have_name ? " " : "", |
3505 | SVfARG(have_name ? name : &PL_sv_no)); | |
3506 | if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) | |
a5390457 NC |
3507 | Perl_warner( |
3508 | aTHX_ packWARN(warn_type), | |
147e3846 | 3509 | "\t(Are you trying to call %s%s on dirhandle%s%" SVf "?)\n", |
65d99836 FC |
3510 | func, pars, have_name ? " " : "", |
3511 | SVfARG(have_name ? name : &PL_sv_no) | |
a5390457 | 3512 | ); |
bc37a18f | 3513 | } |
69282e91 | 3514 | } |
a926ef6b | 3515 | |
f6adc668 | 3516 | /* To workaround core dumps from the uninitialised tm_zone we get the |
e72cf795 JH |
3517 | * system to give us a reasonable struct to copy. This fix means that |
3518 | * strftime uses the tm_zone and tm_gmtoff values returned by | |
3519 | * localtime(time()). That should give the desired result most of the | |
3520 | * time. But probably not always! | |
3521 | * | |
f6adc668 JH |
3522 | * This does not address tzname aspects of NETaa14816. |
3523 | * | |
e72cf795 | 3524 | */ |
f6adc668 | 3525 | |
61b27c87 | 3526 | #ifdef __GLIBC__ |
e72cf795 JH |
3527 | # ifndef STRUCT_TM_HASZONE |
3528 | # define STRUCT_TM_HASZONE | |
3529 | # endif | |
3530 | #endif | |
3531 | ||
f6adc668 JH |
3532 | #ifdef STRUCT_TM_HASZONE /* Backward compat */ |
3533 | # ifndef HAS_TM_TM_ZONE | |
3534 | # define HAS_TM_TM_ZONE | |
3535 | # endif | |
3536 | #endif | |
3537 | ||
e72cf795 | 3538 | void |
f1208910 | 3539 | Perl_init_tm(pTHX_ struct tm *ptm) /* see mktime, strftime and asctime */ |
e72cf795 | 3540 | { |
f6adc668 | 3541 | #ifdef HAS_TM_TM_ZONE |
e72cf795 | 3542 | Time_t now; |
1b6737cc | 3543 | const struct tm* my_tm; |
dc3bf405 | 3544 | PERL_UNUSED_CONTEXT; |
7918f24d | 3545 | PERL_ARGS_ASSERT_INIT_TM; |
e72cf795 | 3546 | (void)time(&now); |
82c57498 | 3547 | my_tm = localtime(&now); |
ca46b8ee SP |
3548 | if (my_tm) |
3549 | Copy(my_tm, ptm, 1, struct tm); | |
1b6737cc | 3550 | #else |
dc3bf405 | 3551 | PERL_UNUSED_CONTEXT; |
7918f24d | 3552 | PERL_ARGS_ASSERT_INIT_TM; |
1b6737cc | 3553 | PERL_UNUSED_ARG(ptm); |
e72cf795 JH |
3554 | #endif |
3555 | } | |
3556 | ||
3557 | /* | |
3558 | * mini_mktime - normalise struct tm values without the localtime() | |
3559 | * semantics (and overhead) of mktime(). | |
3560 | */ | |
3561 | void | |
ddeaf645 | 3562 | Perl_mini_mktime(struct tm *ptm) |
e72cf795 JH |
3563 | { |
3564 | int yearday; | |
3565 | int secs; | |
3566 | int month, mday, year, jday; | |
3567 | int odd_cent, odd_year; | |
3568 | ||
7918f24d NC |
3569 | PERL_ARGS_ASSERT_MINI_MKTIME; |
3570 | ||
e72cf795 JH |
3571 | #define DAYS_PER_YEAR 365 |
3572 | #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1) | |
3573 | #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1) | |
3574 | #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1) | |
3575 | #define SECS_PER_HOUR (60*60) | |
3576 | #define SECS_PER_DAY (24*SECS_PER_HOUR) | |
3577 | /* parentheses deliberately absent on these two, otherwise they don't work */ | |
3578 | #define MONTH_TO_DAYS 153/5 | |
3579 | #define DAYS_TO_MONTH 5/153 | |
3580 | /* offset to bias by March (month 4) 1st between month/mday & year finding */ | |
3581 | #define YEAR_ADJUST (4*MONTH_TO_DAYS+1) | |
3582 | /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */ | |
3583 | #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */ | |
3584 | ||
3585 | /* | |
3586 | * Year/day algorithm notes: | |
3587 | * | |
3588 | * With a suitable offset for numeric value of the month, one can find | |
3589 | * an offset into the year by considering months to have 30.6 (153/5) days, | |
3590 | * using integer arithmetic (i.e., with truncation). To avoid too much | |
3591 | * messing about with leap days, we consider January and February to be | |
3592 | * the 13th and 14th month of the previous year. After that transformation, | |
3593 | * we need the month index we use to be high by 1 from 'normal human' usage, | |
3594 | * so the month index values we use run from 4 through 15. | |
3595 | * | |
3596 | * Given that, and the rules for the Gregorian calendar (leap years are those | |
3597 | * divisible by 4 unless also divisible by 100, when they must be divisible | |
3598 | * by 400 instead), we can simply calculate the number of days since some | |
3599 | * arbitrary 'beginning of time' by futzing with the (adjusted) year number, | |
3600 | * the days we derive from our month index, and adding in the day of the | |
3601 | * month. The value used here is not adjusted for the actual origin which | |
3602 | * it normally would use (1 January A.D. 1), since we're not exposing it. | |
3603 | * We're only building the value so we can turn around and get the | |
3604 | * normalised values for the year, month, day-of-month, and day-of-year. | |
3605 | * | |
3606 | * For going backward, we need to bias the value we're using so that we find | |
3607 | * the right year value. (Basically, we don't want the contribution of | |
3608 | * March 1st to the number to apply while deriving the year). Having done | |
3609 | * that, we 'count up' the contribution to the year number by accounting for | |
3610 | * full quadracenturies (400-year periods) with their extra leap days, plus | |
3611 | * the contribution from full centuries (to avoid counting in the lost leap | |
3612 | * days), plus the contribution from full quad-years (to count in the normal | |
3613 | * leap days), plus the leftover contribution from any non-leap years. | |
3614 | * At this point, if we were working with an actual leap day, we'll have 0 | |
3615 | * days left over. This is also true for March 1st, however. So, we have | |
3616 | * to special-case that result, and (earlier) keep track of the 'odd' | |
3617 | * century and year contributions. If we got 4 extra centuries in a qcent, | |
3618 | * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb. | |
3619 | * Otherwise, we add back in the earlier bias we removed (the 123 from | |
3620 | * figuring in March 1st), find the month index (integer division by 30.6), | |
3621 | * and the remainder is the day-of-month. We then have to convert back to | |
3622 | * 'real' months (including fixing January and February from being 14/15 in | |
3623 | * the previous year to being in the proper year). After that, to get | |
3624 | * tm_yday, we work with the normalised year and get a new yearday value for | |
3625 | * January 1st, which we subtract from the yearday value we had earlier, | |
3626 | * representing the date we've re-built. This is done from January 1 | |
3627 | * because tm_yday is 0-origin. | |
3628 | * | |
3629 | * Since POSIX time routines are only guaranteed to work for times since the | |
3630 | * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm | |
3631 | * applies Gregorian calendar rules even to dates before the 16th century | |
3632 | * doesn't bother me. Besides, you'd need cultural context for a given | |
3633 | * date to know whether it was Julian or Gregorian calendar, and that's | |
3634 | * outside the scope for this routine. Since we convert back based on the | |
3635 | * same rules we used to build the yearday, you'll only get strange results | |
3636 | * for input which needed normalising, or for the 'odd' century years which | |
486ec47a | 3637 | * were leap years in the Julian calendar but not in the Gregorian one. |
e72cf795 JH |
3638 | * I can live with that. |
3639 | * | |
3640 | * This algorithm also fails to handle years before A.D. 1 gracefully, but | |
3641 | * that's still outside the scope for POSIX time manipulation, so I don't | |
3642 | * care. | |
63f7ae8a | 3643 | * |
efdde84a | 3644 | * - lwall |
e72cf795 JH |
3645 | */ |
3646 | ||
3647 | year = 1900 + ptm->tm_year; | |
3648 | month = ptm->tm_mon; | |
3649 | mday = ptm->tm_mday; | |
a64f08cb | 3650 | jday = 0; |
e72cf795 JH |
3651 | if (month >= 2) |
3652 | month+=2; | |
3653 | else | |
3654 | month+=14, year--; | |
3655 | yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400; | |
3656 | yearday += month*MONTH_TO_DAYS + mday + jday; | |
3657 | /* | |
3658 | * Note that we don't know when leap-seconds were or will be, | |
3659 | * so we have to trust the user if we get something which looks | |
3660 | * like a sensible leap-second. Wild values for seconds will | |
3661 | * be rationalised, however. | |
3662 | */ | |
3663 | if ((unsigned) ptm->tm_sec <= 60) { | |
3664 | secs = 0; | |
3665 | } | |
3666 | else { | |
3667 | secs = ptm->tm_sec; | |
3668 | ptm->tm_sec = 0; | |
3669 | } | |
3670 | secs += 60 * ptm->tm_min; | |
3671 | secs += SECS_PER_HOUR * ptm->tm_hour; | |
3672 | if (secs < 0) { | |
3673 | if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) { | |
3674 | /* got negative remainder, but need positive time */ | |
3675 | /* back off an extra day to compensate */ | |
3676 | yearday += (secs/SECS_PER_DAY)-1; | |
3677 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1); | |
3678 | } | |
3679 | else { | |
3680 | yearday += (secs/SECS_PER_DAY); | |
3681 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY); | |
3682 | } | |
3683 | } | |
3684 | else if (secs >= SECS_PER_DAY) { | |
3685 | yearday += (secs/SECS_PER_DAY); | |
3686 | secs %= SECS_PER_DAY; | |
3687 | } | |
3688 | ptm->tm_hour = secs/SECS_PER_HOUR; | |
3689 | secs %= SECS_PER_HOUR; | |
3690 | ptm->tm_min = secs/60; | |
3691 | secs %= 60; | |
3692 | ptm->tm_sec += secs; | |
3693 | /* done with time of day effects */ | |
3694 | /* | |
3695 | * The algorithm for yearday has (so far) left it high by 428. | |
3696 | * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to | |
3697 | * bias it by 123 while trying to figure out what year it | |
3698 | * really represents. Even with this tweak, the reverse | |
3699 | * translation fails for years before A.D. 0001. | |
3700 | * It would still fail for Feb 29, but we catch that one below. | |
3701 | */ | |
3702 | jday = yearday; /* save for later fixup vis-a-vis Jan 1 */ | |
3703 | yearday -= YEAR_ADJUST; | |
3704 | year = (yearday / DAYS_PER_QCENT) * 400; | |
3705 | yearday %= DAYS_PER_QCENT; | |
3706 | odd_cent = yearday / DAYS_PER_CENT; | |
3707 | year += odd_cent * 100; | |
3708 | yearday %= DAYS_PER_CENT; | |
3709 | year += (yearday / DAYS_PER_QYEAR) * 4; | |
3710 | yearday %= DAYS_PER_QYEAR; | |
3711 | odd_year = yearday / DAYS_PER_YEAR; | |
3712 | year += odd_year; | |
3713 | yearday %= DAYS_PER_YEAR; | |
3714 | if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */ | |
3715 | month = 1; | |
3716 | yearday = 29; | |
3717 | } | |
3718 | else { | |
3719 | yearday += YEAR_ADJUST; /* recover March 1st crock */ | |
3720 | month = yearday*DAYS_TO_MONTH; | |
3721 | yearday -= month*MONTH_TO_DAYS; | |
3722 | /* recover other leap-year adjustment */ | |
3723 | if (month > 13) { | |
3724 | month-=14; | |
3725 | year++; | |
3726 | } | |
3727 | else { | |
3728 | month-=2; | |
3729 | } | |
3730 | } | |
3731 | ptm->tm_year = year - 1900; | |
3732 | if (yearday) { | |
3733 | ptm->tm_mday = yearday; | |
3734 | ptm->tm_mon = month; | |
3735 | } | |
3736 | else { | |
3737 | ptm->tm_mday = 31; | |
3738 | ptm->tm_mon = month - 1; | |
3739 | } | |
3740 | /* re-build yearday based on Jan 1 to get tm_yday */ | |
3741 | year--; | |
3742 | yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400; | |
3743 | yearday += 14*MONTH_TO_DAYS + 1; | |
3744 | ptm->tm_yday = jday - yearday; | |
a64f08cb | 3745 | ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7; |
e72cf795 | 3746 | } |
b3c85772 JH |
3747 | |
3748 | char * | |
e1ec3a88 | 3749 | Perl_my_strftime(pTHX_ const char *fmt, int sec, int min, int hour, int mday, int mon, int year, int wday, int yday, int isdst) |
b3c85772 JH |
3750 | { |
3751 | #ifdef HAS_STRFTIME | |
4c17e999 | 3752 | |
63f7ae8a KW |
3753 | /* strftime(), but with a different API so that the return value is a pointer |
3754 | * to the formatted result (which MUST be arranged to be FREED BY THE | |
3755 | * CALLER). This allows this function to increase the buffer size as needed, | |
3756 | * so that the caller doesn't have to worry about that. | |
3757 | * | |
3758 | * Note that yday and wday effectively are ignored by this function, as | |
3759 | * mini_mktime() overwrites them */ | |
4c17e999 | 3760 | |
b3c85772 JH |
3761 | char *buf; |
3762 | int buflen; | |
3763 | struct tm mytm; | |
3764 | int len; | |
3765 | ||
7918f24d NC |
3766 | PERL_ARGS_ASSERT_MY_STRFTIME; |
3767 | ||
b3c85772 JH |
3768 | init_tm(&mytm); /* XXX workaround - see init_tm() above */ |
3769 | mytm.tm_sec = sec; | |
3770 | mytm.tm_min = min; | |
3771 | mytm.tm_hour = hour; | |
3772 | mytm.tm_mday = mday; | |
3773 | mytm.tm_mon = mon; | |
3774 | mytm.tm_year = year; | |
3775 | mytm.tm_wday = wday; | |
3776 | mytm.tm_yday = yday; | |
3777 | mytm.tm_isdst = isdst; | |
3778 | mini_mktime(&mytm); | |
c473feec SR |
3779 | /* use libc to get the values for tm_gmtoff and tm_zone [perl #18238] */ |
3780 | #if defined(HAS_MKTIME) && (defined(HAS_TM_TM_GMTOFF) || defined(HAS_TM_TM_ZONE)) | |
3781 | STMT_START { | |
3782 | struct tm mytm2; | |
3783 | mytm2 = mytm; | |
3784 | mktime(&mytm2); | |
3785 | #ifdef HAS_TM_TM_GMTOFF | |
3786 | mytm.tm_gmtoff = mytm2.tm_gmtoff; | |
3787 | #endif | |
3788 | #ifdef HAS_TM_TM_ZONE | |
3789 | mytm.tm_zone = mytm2.tm_zone; | |
3790 | #endif | |
3791 | } STMT_END; | |
3792 | #endif | |
b3c85772 | 3793 | buflen = 64; |
a02a5408 | 3794 | Newx(buf, buflen, char); |
5d37acd6 DM |
3795 | |
3796 | GCC_DIAG_IGNORE(-Wformat-nonliteral); /* fmt checked by caller */ | |
b3c85772 | 3797 | len = strftime(buf, buflen, fmt, &mytm); |
5d37acd6 DM |
3798 | GCC_DIAG_RESTORE; |
3799 | ||
b3c85772 | 3800 | /* |
877f6a72 | 3801 | ** The following is needed to handle to the situation where |
b3c85772 JH |
3802 | ** tmpbuf overflows. Basically we want to allocate a buffer |
3803 | ** and try repeatedly. The reason why it is so complicated | |
3804 | ** is that getting a return value of 0 from strftime can indicate | |
3805 | ** one of the following: | |
3806 | ** 1. buffer overflowed, | |
3807 | ** 2. illegal conversion specifier, or | |
3808 | ** 3. the format string specifies nothing to be returned(not | |
3809 | ** an error). This could be because format is an empty string | |
3810 | ** or it specifies %p that yields an empty string in some locale. | |
3811 | ** If there is a better way to make it portable, go ahead by | |
3812 | ** all means. | |
3813 | */ | |
3814 | if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0')) | |
3815 | return buf; | |
3816 | else { | |
3817 | /* Possibly buf overflowed - try again with a bigger buf */ | |
e1ec3a88 | 3818 | const int fmtlen = strlen(fmt); |
7743c307 | 3819 | int bufsize = fmtlen + buflen; |
877f6a72 | 3820 | |
c4bc4aaa | 3821 | Renew(buf, bufsize, char); |
b3c85772 | 3822 | while (buf) { |
5d37acd6 DM |
3823 | |
3824 | GCC_DIAG_IGNORE(-Wformat-nonliteral); /* fmt checked by caller */ | |
b3c85772 | 3825 | buflen = strftime(buf, bufsize, fmt, &mytm); |
5d37acd6 DM |
3826 | GCC_DIAG_RESTORE; |
3827 | ||
b3c85772 JH |
3828 | if (buflen > 0 && buflen < bufsize) |
3829 | break; | |
3830 | /* heuristic to prevent out-of-memory errors */ | |
3831 | if (bufsize > 100*fmtlen) { | |
3832 | Safefree(buf); | |
3833 | buf = NULL; | |
3834 | break; | |
3835 | } | |
7743c307 SH |
3836 | bufsize *= 2; |
3837 | Renew(buf, bufsize, char); | |
b3c85772 JH |
3838 | } |
3839 | return buf; | |
3840 | } | |
3841 | #else | |
3842 | Perl_croak(aTHX_ "panic: no strftime"); | |
27da23d5 | 3843 | return NULL; |
b3c85772 JH |
3844 | #endif |
3845 | } | |
3846 | ||
877f6a72 NIS |
3847 | |
3848 | #define SV_CWD_RETURN_UNDEF \ | |
e03e82a0 DM |
3849 | sv_set_undef(sv); \ |
3850 | return FALSE | |
877f6a72 NIS |
3851 | |
3852 | #define SV_CWD_ISDOT(dp) \ | |
3853 | (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \ | |
3aed30dc | 3854 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
877f6a72 NIS |
3855 | |
3856 | /* | |
ccfc67b7 JH |
3857 | =head1 Miscellaneous Functions |
3858 | ||
89423764 | 3859 | =for apidoc getcwd_sv |
877f6a72 | 3860 | |
796b6530 | 3861 | Fill C<sv> with current working directory |
877f6a72 NIS |
3862 | |
3863 | =cut | |
3864 | */ | |
3865 | ||
3866 | /* Originally written in Perl by John Bazik; rewritten in C by Ben Sugars. | |
3867 | * rewritten again by dougm, optimized for use with xs TARG, and to prefer | |
3868 | * getcwd(3) if available | |
f6bab5f6 | 3869 | * Comments from the original: |
877f6a72 NIS |
3870 | * This is a faster version of getcwd. It's also more dangerous |
3871 | * because you might chdir out of a directory that you can't chdir | |
3872 | * back into. */ | |
3873 | ||
877f6a72 | 3874 | int |
5aaab254 | 3875 | Perl_getcwd_sv(pTHX_ SV *sv) |
877f6a72 NIS |
3876 | { |
3877 | #ifndef PERL_MICRO | |
ea715489 | 3878 | SvTAINTED_on(sv); |
ea715489 | 3879 | |
7918f24d NC |
3880 | PERL_ARGS_ASSERT_GETCWD_SV; |
3881 | ||
8f95b30d JH |
3882 | #ifdef HAS_GETCWD |
3883 | { | |
60e110a8 DM |
3884 | char buf[MAXPATHLEN]; |
3885 | ||
3aed30dc | 3886 | /* Some getcwd()s automatically allocate a buffer of the given |
60e110a8 DM |
3887 | * size from the heap if they are given a NULL buffer pointer. |
3888 | * The problem is that this behaviour is not portable. */ | |
3aed30dc | 3889 | if (getcwd(buf, sizeof(buf) - 1)) { |
42d9b98d | 3890 | sv_setpv(sv, buf); |
3aed30dc HS |
3891 | return TRUE; |
3892 | } | |
3893 | else { | |
e03e82a0 | 3894 | SV_CWD_RETURN_UNDEF; |
3aed30dc | 3895 | } |
8f95b30d JH |
3896 | } |
3897 | ||
3898 | #else | |
3899 | ||
c623ac67 | 3900 | Stat_t statbuf; |
877f6a72 | 3901 | int orig_cdev, orig_cino, cdev, cino, odev, oino, tdev, tino; |
4373e329 | 3902 | int pathlen=0; |
877f6a72 | 3903 | Direntry_t *dp; |
877f6a72 | 3904 | |
862a34c6 | 3905 | SvUPGRADE(sv, SVt_PV); |
877f6a72 | 3906 | |
877f6a72 | 3907 | if (PerlLIO_lstat(".", &statbuf) < 0) { |
3aed30dc | 3908 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
3909 | } |
3910 | ||
3911 | orig_cdev = statbuf.st_dev; | |
3912 | orig_cino = statbuf.st_ino; | |
3913 | cdev = orig_cdev; | |
3914 | cino = orig_cino; | |
3915 | ||
3916 | for (;;) { | |
4373e329 | 3917 | DIR *dir; |
f56ed502 | 3918 | int namelen; |
3aed30dc HS |
3919 | odev = cdev; |
3920 | oino = cino; | |
3921 | ||
3922 | if (PerlDir_chdir("..") < 0) { | |
3923 | SV_CWD_RETURN_UNDEF; | |
3924 | } | |
3925 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3926 | SV_CWD_RETURN_UNDEF; | |
3927 | } | |
3928 | ||
3929 | cdev = statbuf.st_dev; | |
3930 | cino = statbuf.st_ino; | |
3931 | ||
3932 | if (odev == cdev && oino == cino) { | |
3933 | break; | |
3934 | } | |
3935 | if (!(dir = PerlDir_open("."))) { | |
3936 | SV_CWD_RETURN_UNDEF; | |
3937 | } | |
3938 | ||
3939 | while ((dp = PerlDir_read(dir)) != NULL) { | |
877f6a72 | 3940 | #ifdef DIRNAMLEN |
f56ed502 | 3941 | namelen = dp->d_namlen; |
877f6a72 | 3942 | #else |
f56ed502 | 3943 | namelen = strlen(dp->d_name); |
877f6a72 | 3944 | #endif |
3aed30dc HS |
3945 | /* skip . and .. */ |
3946 | if (SV_CWD_ISDOT(dp)) { | |
3947 | continue; | |
3948 | } | |
3949 | ||
3950 | if (PerlLIO_lstat(dp->d_name, &statbuf) < 0) { | |
3951 | SV_CWD_RETURN_UNDEF; | |
3952 | } | |
3953 | ||
3954 | tdev = statbuf.st_dev; | |
3955 | tino = statbuf.st_ino; | |
3956 | if (tino == oino && tdev == odev) { | |
3957 | break; | |
3958 | } | |
cb5953d6 JH |
3959 | } |
3960 | ||
3aed30dc HS |
3961 | if (!dp) { |
3962 | SV_CWD_RETURN_UNDEF; | |
3963 | } | |
3964 | ||
3965 | if (pathlen + namelen + 1 >= MAXPATHLEN) { | |
3966 | SV_CWD_RETURN_UNDEF; | |
3967 | } | |
877f6a72 | 3968 | |
3aed30dc HS |
3969 | SvGROW(sv, pathlen + namelen + 1); |
3970 | ||
3971 | if (pathlen) { | |
3972 | /* shift down */ | |
95a20fc0 | 3973 | Move(SvPVX_const(sv), SvPVX(sv) + namelen + 1, pathlen, char); |
3aed30dc | 3974 | } |
877f6a72 | 3975 | |
3aed30dc HS |
3976 | /* prepend current directory to the front */ |
3977 | *SvPVX(sv) = '/'; | |
3978 | Move(dp->d_name, SvPVX(sv)+1, namelen, char); | |
3979 | pathlen += (namelen + 1); | |
877f6a72 NIS |
3980 | |
3981 | #ifdef VOID_CLOSEDIR | |
3aed30dc | 3982 | PerlDir_close(dir); |
877f6a72 | 3983 | #else |
3aed30dc HS |
3984 | if (PerlDir_close(dir) < 0) { |
3985 | SV_CWD_RETURN_UNDEF; | |
3986 | } | |
877f6a72 NIS |
3987 | #endif |
3988 | } | |
3989 | ||
60e110a8 | 3990 | if (pathlen) { |
3aed30dc HS |
3991 | SvCUR_set(sv, pathlen); |
3992 | *SvEND(sv) = '\0'; | |
3993 | SvPOK_only(sv); | |
877f6a72 | 3994 | |
95a20fc0 | 3995 | if (PerlDir_chdir(SvPVX_const(sv)) < 0) { |
3aed30dc HS |
3996 | SV_CWD_RETURN_UNDEF; |
3997 | } | |
877f6a72 NIS |
3998 | } |
3999 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3aed30dc | 4000 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
4001 | } |
4002 | ||
4003 | cdev = statbuf.st_dev; | |
4004 | cino = statbuf.st_ino; | |
4005 | ||
4006 | if (cdev != orig_cdev || cino != orig_cino) { | |
3aed30dc HS |
4007 | Perl_croak(aTHX_ "Unstable directory path, " |
4008 | "current directory changed unexpectedly"); | |
877f6a72 | 4009 | } |
877f6a72 NIS |
4010 | |
4011 | return TRUE; | |
793b8d8e JH |
4012 | #endif |
4013 | ||
877f6a72 NIS |
4014 | #else |
4015 | return FALSE; | |
4016 | #endif | |
4017 | } | |
4018 | ||
abc6d738 | 4019 | #include "vutil.c" |
ad63d80f | 4020 | |
c95c94b1 | 4021 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) && defined(SOCK_DGRAM) && defined(HAS_SELECT) |
2bc69dc4 NIS |
4022 | # define EMULATE_SOCKETPAIR_UDP |
4023 | #endif | |
4024 | ||
4025 | #ifdef EMULATE_SOCKETPAIR_UDP | |
02fc2eee NC |
4026 | static int |
4027 | S_socketpair_udp (int fd[2]) { | |
e10bb1e9 | 4028 | dTHX; |
02fc2eee NC |
4029 | /* Fake a datagram socketpair using UDP to localhost. */ |
4030 | int sockets[2] = {-1, -1}; | |
4031 | struct sockaddr_in addresses[2]; | |
4032 | int i; | |
3aed30dc | 4033 | Sock_size_t size = sizeof(struct sockaddr_in); |
ae92b34e | 4034 | unsigned short port; |
02fc2eee NC |
4035 | int got; |
4036 | ||
3aed30dc | 4037 | memset(&addresses, 0, sizeof(addresses)); |
02fc2eee NC |
4038 | i = 1; |
4039 | do { | |
3aed30dc HS |
4040 | sockets[i] = PerlSock_socket(AF_INET, SOCK_DGRAM, PF_INET); |
4041 | if (sockets[i] == -1) | |
4042 | goto tidy_up_and_fail; | |
4043 | ||
4044 | addresses[i].sin_family = AF_INET; | |
4045 | addresses[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
4046 | addresses[i].sin_port = 0; /* kernel choses port. */ | |
4047 | if (PerlSock_bind(sockets[i], (struct sockaddr *) &addresses[i], | |
4048 | sizeof(struct sockaddr_in)) == -1) | |
4049 | goto tidy_up_and_fail; | |
02fc2eee NC |
4050 | } while (i--); |
4051 | ||
4052 | /* Now have 2 UDP sockets. Find out which port each is connected to, and | |
4053 | for each connect the other socket to it. */ | |
4054 | i = 1; | |
4055 | do { | |
3aed30dc HS |
4056 | if (PerlSock_getsockname(sockets[i], (struct sockaddr *) &addresses[i], |
4057 | &size) == -1) | |
4058 | goto tidy_up_and_fail; | |
4059 | if (size != sizeof(struct sockaddr_in)) | |
4060 | goto abort_tidy_up_and_fail; | |
4061 | /* !1 is 0, !0 is 1 */ | |
4062 | if (PerlSock_connect(sockets[!i], (struct sockaddr *) &addresses[i], | |
4063 | sizeof(struct sockaddr_in)) == -1) | |
4064 | goto tidy_up_and_fail; | |
02fc2eee NC |
4065 | } while (i--); |
4066 | ||
4067 | /* Now we have 2 sockets connected to each other. I don't trust some other | |
4068 | process not to have already sent a packet to us (by random) so send | |
4069 | a packet from each to the other. */ | |
4070 | i = 1; | |
4071 | do { | |
3aed30dc HS |
4072 | /* I'm going to send my own port number. As a short. |
4073 | (Who knows if someone somewhere has sin_port as a bitfield and needs | |
4074 | this routine. (I'm assuming crays have socketpair)) */ | |
4075 | port = addresses[i].sin_port; | |
4076 | got = PerlLIO_write(sockets[i], &port, sizeof(port)); | |
4077 | if (got != sizeof(port)) { | |
4078 | if (got == -1) | |
4079 | goto tidy_up_and_fail; | |
4080 | goto abort_tidy_up_and_fail; | |
4081 | } | |
02fc2eee NC |
4082 | } while (i--); |
4083 | ||
4084 | /* Packets sent. I don't trust them to have arrived though. | |
4085 | (As I understand it Solaris TCP stack is multithreaded. Non-blocking | |
4086 | connect to localhost will use a second kernel thread. In 2.6 the | |
4087 | first thread running the connect() returns before the second completes, | |
4088 | so EINPROGRESS> In 2.7 the improved stack is faster and connect() | |
4089 | returns 0. Poor programs have tripped up. One poor program's authors' | |
4090 | had a 50-1 reverse stock split. Not sure how connected these were.) | |
4091 | So I don't trust someone not to have an unpredictable UDP stack. | |
4092 | */ | |
4093 | ||
4094 | { | |
3aed30dc HS |
4095 | struct timeval waitfor = {0, 100000}; /* You have 0.1 seconds */ |
4096 | int max = sockets[1] > sockets[0] ? sockets[1] : sockets[0]; | |
4097 | fd_set rset; | |
4098 | ||
4099 | FD_ZERO(&rset); | |
ea407a0c NC |
4100 | FD_SET((unsigned int)sockets[0], &rset); |
4101 | FD_SET((unsigned int)sockets[1], &rset); | |
3aed30dc HS |
4102 | |
4103 | got = PerlSock_select(max + 1, &rset, NULL, NULL, &waitfor); | |
4104 | if (got != 2 || !FD_ISSET(sockets[0], &rset) | |
4105 | || !FD_ISSET(sockets[1], &rset)) { | |
4106 | /* I hope this is portable and appropriate. */ | |
4107 | if (got == -1) | |
4108 | goto tidy_up_and_fail; | |
4109 | goto abort_tidy_up_and_fail; | |
4110 | } | |
02fc2eee | 4111 | } |
f4758303 | 4112 | |
02fc2eee NC |
4113 | /* And the paranoia department even now doesn't trust it to have arrive |
4114 | (hence MSG_DONTWAIT). Or that what arrives was sent by us. */ | |
4115 | { | |
3aed30dc HS |
4116 | struct sockaddr_in readfrom; |
4117 | unsigned short buffer[2]; | |
02fc2eee | 4118 | |
3aed30dc HS |
4119 | i = 1; |
4120 | do { | |
02fc2eee | 4121 | #ifdef MSG_DONTWAIT |
3aed30dc HS |
4122 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
4123 | sizeof(buffer), MSG_DONTWAIT, | |
4124 | (struct sockaddr *) &readfrom, &size); | |
02fc2eee | 4125 | #else |
3aed30dc HS |
4126 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
4127 | sizeof(buffer), 0, | |
4128 | (struct sockaddr *) &readfrom, &size); | |
e10bb1e9 | 4129 | #endif |
02fc2eee | 4130 | |
3aed30dc HS |
4131 | if (got == -1) |
4132 | goto tidy_up_and_fail; | |
4133 | if (got != sizeof(port) | |
4134 | || size != sizeof(struct sockaddr_in) | |
4135 | /* Check other socket sent us its port. */ | |
4136 | || buffer[0] != (unsigned short) addresses[!i].sin_port | |
4137 | /* Check kernel says we got the datagram from that socket */ | |
4138 | || readfrom.sin_family != addresses[!i].sin_family | |
4139 | || readfrom.sin_addr.s_addr != addresses[!i].sin_addr.s_addr | |
4140 | || readfrom.sin_port != addresses[!i].sin_port) | |
4141 | goto abort_tidy_up_and_fail; | |
4142 | } while (i--); | |
02fc2eee NC |
4143 | } |
4144 | /* My caller (my_socketpair) has validated that this is non-NULL */ | |
4145 | fd[0] = sockets[0]; | |
4146 | fd[1] = sockets[1]; | |
4147 | /* I hereby declare this connection open. May God bless all who cross | |
4148 | her. */ | |
4149 | return 0; | |
4150 | ||
4151 | abort_tidy_up_and_fail: | |
4152 | errno = ECONNABORTED; | |
4153 | tidy_up_and_fail: | |
4154 | { | |
4ee39169 | 4155 | dSAVE_ERRNO; |
3aed30dc HS |
4156 | if (sockets[0] != -1) |
4157 | PerlLIO_close(sockets[0]); | |
4158 | if (sockets[1] != -1) | |
4159 | PerlLIO_close(sockets[1]); | |
4ee39169 | 4160 | RESTORE_ERRNO; |
3aed30dc | 4161 | return -1; |
02fc2eee NC |
4162 | } |
4163 | } | |
85ca448a | 4164 | #endif /* EMULATE_SOCKETPAIR_UDP */ |
02fc2eee | 4165 | |
b5ac89c3 | 4166 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) |
02fc2eee NC |
4167 | int |
4168 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { | |
4169 | /* Stevens says that family must be AF_LOCAL, protocol 0. | |
2948e0bd | 4170 | I'm going to enforce that, then ignore it, and use TCP (or UDP). */ |
2bcd6579 | 4171 | dTHXa(NULL); |
02fc2eee NC |
4172 | int listener = -1; |
4173 | int connector = -1; | |
4174 | int acceptor = -1; | |
4175 | struct sockaddr_in listen_addr; | |
4176 | struct sockaddr_in connect_addr; | |
4177 | Sock_size_t size; | |
4178 | ||
50458334 JH |
4179 | if (protocol |
4180 | #ifdef AF_UNIX | |
4181 | || family != AF_UNIX | |
4182 | #endif | |
3aed30dc HS |
4183 | ) { |
4184 | errno = EAFNOSUPPORT; | |
4185 | return -1; | |
02fc2eee | 4186 | } |
2948e0bd | 4187 | if (!fd) { |
3aed30dc HS |
4188 | errno = EINVAL; |
4189 | return -1; | |
2948e0bd | 4190 | } |
02fc2eee | 4191 | |
2bc69dc4 | 4192 | #ifdef EMULATE_SOCKETPAIR_UDP |
02fc2eee | 4193 | if (type == SOCK_DGRAM) |
3aed30dc | 4194 | return S_socketpair_udp(fd); |
2bc69dc4 | 4195 | #endif |
02fc2eee | 4196 | |
2bcd6579 | 4197 | aTHXa(PERL_GET_THX); |
3aed30dc | 4198 | listener = PerlSock_socket(AF_INET, type, 0); |
02fc2eee | 4199 | if (listener == -1) |
3aed30dc HS |
4200 | return -1; |
4201 | memset(&listen_addr, 0, sizeof(listen_addr)); | |
02fc2eee | 4202 | listen_addr.sin_family = AF_INET; |
3aed30dc | 4203 | listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); |
02fc2eee | 4204 | listen_addr.sin_port = 0; /* kernel choses port. */ |
3aed30dc HS |
4205 | if (PerlSock_bind(listener, (struct sockaddr *) &listen_addr, |
4206 | sizeof(listen_addr)) == -1) | |
4207 | goto tidy_up_and_fail; | |
e10bb1e9 | 4208 | if (PerlSock_listen(listener, 1) == -1) |
3aed30dc | 4209 | goto tidy_up_and_fail; |
02fc2eee | 4210 | |
3aed30dc | 4211 | connector = PerlSock_socket(AF_INET, type, 0); |
02fc2eee | 4212 | if (connector == -1) |
3aed30dc | 4213 | goto tidy_up_and_fail; |
02fc2eee | 4214 | /* We want to find out the port number to connect to. */ |
3aed30dc HS |
4215 | size = sizeof(connect_addr); |
4216 | if (PerlSock_getsockname(listener, (struct sockaddr *) &connect_addr, | |
4217 | &size) == -1) | |
4218 | goto tidy_up_and_fail; | |
4219 | if (size != sizeof(connect_addr)) | |
4220 | goto abort_tidy_up_and_fail; | |
e10bb1e9 | 4221 | if (PerlSock_connect(connector, (struct sockaddr *) &connect_addr, |
3aed30dc HS |
4222 | sizeof(connect_addr)) == -1) |
4223 | goto tidy_up_and_fail; | |
02fc2eee | 4224 | |
3aed30dc HS |
4225 | size = sizeof(listen_addr); |
4226 | acceptor = PerlSock_accept(listener, (struct sockaddr *) &listen_addr, | |
4227 | &size); | |
02fc2eee | 4228 | if (acceptor == -1) |
3aed30dc HS |
4229 | goto tidy_up_and_fail; |
4230 | if (size != sizeof(listen_addr)) | |
4231 | goto abort_tidy_up_and_fail; | |
4232 | PerlLIO_close(listener); | |
02fc2eee NC |
4233 | /* Now check we are talking to ourself by matching port and host on the |
4234 | two sockets. */ | |
3aed30dc HS |
4235 | if (PerlSock_getsockname(connector, (struct sockaddr *) &connect_addr, |
4236 | &size) == -1) | |
4237 | goto tidy_up_and_fail; | |
4238 | if (size != sizeof(connect_addr) | |
4239 | || listen_addr.sin_family != connect_addr.sin_family | |
4240 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr | |
4241 | || listen_addr.sin_port != connect_addr.sin_port) { | |
4242 | goto abort_tidy_up_and_fail; | |
02fc2eee NC |
4243 | } |
4244 | fd[0] = connector; | |
4245 | fd[1] = acceptor; | |
4246 | return 0; | |
4247 | ||
4248 | abort_tidy_up_and_fail: | |
27da23d5 JH |
4249 | #ifdef ECONNABORTED |
4250 | errno = ECONNABORTED; /* This would be the standard thing to do. */ | |
8ad758c7 | 4251 | #elif defined(ECONNREFUSED) |
27da23d5 | 4252 | errno = ECONNREFUSED; /* E.g. Symbian does not have ECONNABORTED. */ |
8ad758c7 | 4253 | #else |
27da23d5 | 4254 | errno = ETIMEDOUT; /* Desperation time. */ |
27da23d5 | 4255 | #endif |
02fc2eee NC |
4256 | tidy_up_and_fail: |
4257 | { | |
4ee39169 | 4258 | dSAVE_ERRNO; |
3aed30dc HS |
4259 | if (listener != -1) |
4260 | PerlLIO_close(listener); | |
4261 | if (connector != -1) | |
4262 | PerlLIO_close(connector); | |
4263 | if (acceptor != -1) | |
4264 | PerlLIO_close(acceptor); | |
4ee39169 | 4265 | RESTORE_ERRNO; |
3aed30dc | 4266 | return -1; |
02fc2eee NC |
4267 | } |
4268 | } | |
85ca448a | 4269 | #else |
48ea76d1 | 4270 | /* In any case have a stub so that there's code corresponding |
d500e60d | 4271 | * to the my_socketpair in embed.fnc. */ |
48ea76d1 JH |
4272 | int |
4273 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { | |
daf16542 | 4274 | #ifdef HAS_SOCKETPAIR |
48ea76d1 | 4275 | return socketpair(family, type, protocol, fd); |
daf16542 JH |
4276 | #else |
4277 | return -1; | |
4278 | #endif | |
48ea76d1 JH |
4279 | } |
4280 | #endif | |
4281 | ||
68795e93 NIS |
4282 | /* |
4283 | ||
4284 | =for apidoc sv_nosharing | |
4285 | ||
4286 | Dummy routine which "shares" an SV when there is no sharing module present. | |
72d33970 FC |
4287 | Or "locks" it. Or "unlocks" it. In other |
4288 | words, ignores its single SV argument. | |
796b6530 | 4289 | Exists to avoid test for a C<NULL> function pointer and because it could |
d5b2b27b | 4290 | potentially warn under some level of strict-ness. |
68795e93 NIS |
4291 | |
4292 | =cut | |
4293 | */ | |
4294 | ||
4295 | void | |
4296 | Perl_sv_nosharing(pTHX_ SV *sv) | |
4297 | { | |
96a5add6 | 4298 | PERL_UNUSED_CONTEXT; |
53c1dcc0 | 4299 | PERL_UNUSED_ARG(sv); |
68795e93 NIS |
4300 | } |
4301 | ||
eba16661 JH |
4302 | /* |
4303 | ||
4304 | =for apidoc sv_destroyable | |
4305 | ||
4306 | Dummy routine which reports that object can be destroyed when there is no | |
4307 | sharing module present. It ignores its single SV argument, and returns | |
796b6530 | 4308 | 'true'. Exists to avoid test for a C<NULL> function pointer and because it |
eba16661 JH |
4309 | could potentially warn under some level of strict-ness. |
4310 | ||
4311 | =cut | |
4312 | */ | |
4313 | ||
4314 | bool | |
4315 | Perl_sv_destroyable(pTHX_ SV *sv) | |
4316 | { | |
4317 | PERL_UNUSED_CONTEXT; | |
4318 | PERL_UNUSED_ARG(sv); | |
4319 | return TRUE; | |
4320 | } | |
4321 | ||
a05d7ebb | 4322 | U32 |
e1ec3a88 | 4323 | Perl_parse_unicode_opts(pTHX_ const char **popt) |
a05d7ebb | 4324 | { |
e1ec3a88 | 4325 | const char *p = *popt; |
a05d7ebb JH |
4326 | U32 opt = 0; |
4327 | ||
7918f24d NC |
4328 | PERL_ARGS_ASSERT_PARSE_UNICODE_OPTS; |
4329 | ||
a05d7ebb JH |
4330 | if (*p) { |
4331 | if (isDIGIT(*p)) { | |
96e440d2 | 4332 | const char* endptr; |
22ff3130 | 4333 | UV uv; |
89d84ff9 | 4334 | if (grok_atoUV(p, &uv, &endptr) && uv <= U32_MAX) { |
22ff3130 | 4335 | opt = (U32)uv; |
89d84ff9 HS |
4336 | p = endptr; |
4337 | if (p && *p && *p != '\n' && *p != '\r') { | |
4338 | if (isSPACE(*p)) | |
4339 | goto the_end_of_the_opts_parser; | |
4340 | else | |
4341 | Perl_croak(aTHX_ "Unknown Unicode option letter '%c'", *p); | |
4342 | } | |
22ff3130 | 4343 | } |
817e3e2c TC |
4344 | else { |
4345 | Perl_croak(aTHX_ "Invalid number '%s' for -C option.\n", p); | |
4346 | } | |
22ff3130 HS |
4347 | } |
4348 | else { | |
a05d7ebb JH |
4349 | for (; *p; p++) { |
4350 | switch (*p) { | |
4351 | case PERL_UNICODE_STDIN: | |
4352 | opt |= PERL_UNICODE_STDIN_FLAG; break; | |
4353 | case PERL_UNICODE_STDOUT: | |
4354 | opt |= PERL_UNICODE_STDOUT_FLAG; break; | |
4355 | case PERL_UNICODE_STDERR: | |
4356 | opt |= PERL_UNICODE_STDERR_FLAG; break; | |
4357 | case PERL_UNICODE_STD: | |
4358 | opt |= PERL_UNICODE_STD_FLAG; break; | |
4359 | case PERL_UNICODE_IN: | |
4360 | opt |= PERL_UNICODE_IN_FLAG; break; | |
4361 | case PERL_UNICODE_OUT: | |
4362 | opt |= PERL_UNICODE_OUT_FLAG; break; | |
4363 | case PERL_UNICODE_INOUT: | |
4364 | opt |= PERL_UNICODE_INOUT_FLAG; break; | |
4365 | case PERL_UNICODE_LOCALE: | |
4366 | opt |= PERL_UNICODE_LOCALE_FLAG; break; | |
4367 | case PERL_UNICODE_ARGV: | |
4368 | opt |= PERL_UNICODE_ARGV_FLAG; break; | |
5a22a2bb NC |
4369 | case PERL_UNICODE_UTF8CACHEASSERT: |
4370 | opt |= PERL_UNICODE_UTF8CACHEASSERT_FLAG; break; | |
a05d7ebb | 4371 | default: |
d4a59e54 FC |
4372 | if (*p != '\n' && *p != '\r') { |
4373 | if(isSPACE(*p)) goto the_end_of_the_opts_parser; | |
4374 | else | |
7c91f477 JH |
4375 | Perl_croak(aTHX_ |
4376 | "Unknown Unicode option letter '%c'", *p); | |
d4a59e54 | 4377 | } |
a05d7ebb JH |
4378 | } |
4379 | } | |
4380 | } | |
4381 | } | |
4382 | else | |
4383 | opt = PERL_UNICODE_DEFAULT_FLAGS; | |
4384 | ||
d4a59e54 FC |
4385 | the_end_of_the_opts_parser: |
4386 | ||
a05d7ebb | 4387 | if (opt & ~PERL_UNICODE_ALL_FLAGS) |
147e3846 | 4388 | Perl_croak(aTHX_ "Unknown Unicode option value %" UVuf, |
a05d7ebb JH |
4389 | (UV) (opt & ~PERL_UNICODE_ALL_FLAGS)); |
4390 | ||
4391 | *popt = p; | |
4392 | ||
4393 | return opt; | |
4394 | } | |
4395 | ||
25bbd826 CB |
4396 | #ifdef VMS |
4397 | # include <starlet.h> | |
4398 | #endif | |
4399 | ||
132efe8b JH |
4400 | U32 |
4401 | Perl_seed(pTHX) | |
4402 | { | |
4403 | /* | |
4404 | * This is really just a quick hack which grabs various garbage | |
4405 | * values. It really should be a real hash algorithm which | |
4406 | * spreads the effect of every input bit onto every output bit, | |
4407 | * if someone who knows about such things would bother to write it. | |
4408 | * Might be a good idea to add that function to CORE as well. | |
4409 | * No numbers below come from careful analysis or anything here, | |
4410 | * except they are primes and SEED_C1 > 1E6 to get a full-width | |
4411 | * value from (tv_sec * SEED_C1 + tv_usec). The multipliers should | |
4412 | * probably be bigger too. | |
4413 | */ | |
4414 | #if RANDBITS > 16 | |
4415 | # define SEED_C1 1000003 | |
4416 | #define SEED_C4 73819 | |
4417 | #else | |
4418 | # define SEED_C1 25747 | |
4419 | #define SEED_C4 20639 | |
4420 | #endif | |
4421 | #define SEED_C2 3 | |
4422 | #define SEED_C3 269 | |
4423 | #define SEED_C5 26107 | |
4424 | ||
4425 | #ifndef PERL_NO_DEV_RANDOM | |
4426 | int fd; | |
4427 | #endif | |
4428 | U32 u; | |
95a8bf05 | 4429 | #ifdef HAS_GETTIMEOFDAY |
132efe8b | 4430 | struct timeval when; |
95a8bf05 | 4431 | #else |
132efe8b | 4432 | Time_t when; |
132efe8b JH |
4433 | #endif |
4434 | ||
4435 | /* This test is an escape hatch, this symbol isn't set by Configure. */ | |
4436 | #ifndef PERL_NO_DEV_RANDOM | |
4437 | #ifndef PERL_RANDOM_DEVICE | |
4438 | /* /dev/random isn't used by default because reads from it will block | |
4439 | * if there isn't enough entropy available. You can compile with | |
4440 | * PERL_RANDOM_DEVICE to it if you'd prefer Perl to block until there | |
4441 | * is enough real entropy to fill the seed. */ | |
afa49a03 AB |
4442 | # ifdef __amigaos4__ |
4443 | # define PERL_RANDOM_DEVICE "RANDOM:SIZE=4" | |
4444 | # else | |
4445 | # define PERL_RANDOM_DEVICE "/dev/urandom" | |
4446 | # endif | |
132efe8b JH |
4447 | #endif |
4448 | fd = PerlLIO_open(PERL_RANDOM_DEVICE, 0); | |
4449 | if (fd != -1) { | |
27da23d5 | 4450 | if (PerlLIO_read(fd, (void*)&u, sizeof u) != sizeof u) |
132efe8b JH |
4451 | u = 0; |
4452 | PerlLIO_close(fd); | |
4453 | if (u) | |
4454 | return u; | |
4455 | } | |
4456 | #endif | |
4457 | ||
95a8bf05 | 4458 | #ifdef HAS_GETTIMEOFDAY |
132efe8b JH |
4459 | PerlProc_gettimeofday(&when,NULL); |
4460 | u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec; | |
95a8bf05 | 4461 | #else |
132efe8b JH |
4462 | (void)time(&when); |
4463 | u = (U32)SEED_C1 * when; | |
132efe8b JH |
4464 | #endif |
4465 | u += SEED_C3 * (U32)PerlProc_getpid(); | |
4466 | u += SEED_C4 * (U32)PTR2UV(PL_stack_sp); | |
4467 | #ifndef PLAN9 /* XXX Plan9 assembler chokes on this; fix needed */ | |
4468 | u += SEED_C5 * (U32)PTR2UV(&when); | |
4469 | #endif | |
4470 | return u; | |
4471 | } | |
4472 | ||
7dc86639 | 4473 | void |
a2098e20 | 4474 | Perl_get_hash_seed(pTHX_ unsigned char * const seed_buffer) |
bed60192 | 4475 | { |
95309d6b | 4476 | #ifndef NO_PERL_HASH_ENV |
a2098e20 | 4477 | const char *env_pv; |
95309d6b | 4478 | #endif |
a2098e20 | 4479 | unsigned long i; |
7dc86639 YO |
4480 | |
4481 | PERL_ARGS_ASSERT_GET_HASH_SEED; | |
bed60192 | 4482 | |
95309d6b | 4483 | #ifndef NO_PERL_HASH_ENV |
a2098e20 | 4484 | env_pv= PerlEnv_getenv("PERL_HASH_SEED"); |
7dc86639 | 4485 | |
a2098e20 | 4486 | if ( env_pv ) |
7dc86639 | 4487 | { |
a2098e20 YO |
4488 | /* ignore leading spaces */ |
4489 | while (isSPACE(*env_pv)) | |
4490 | env_pv++; | |
95309d6b | 4491 | # ifdef USE_PERL_PERTURB_KEYS |
a2098e20 YO |
4492 | /* if they set it to "0" we disable key traversal randomization completely */ |
4493 | if (strEQ(env_pv,"0")) { | |
6a5b4183 YO |
4494 | PL_hash_rand_bits_enabled= 0; |
4495 | } else { | |
a2098e20 | 4496 | /* otherwise switch to deterministic mode */ |
6a5b4183 YO |
4497 | PL_hash_rand_bits_enabled= 2; |
4498 | } | |
95309d6b | 4499 | # endif |
a2098e20 YO |
4500 | /* ignore a leading 0x... if it is there */ |
4501 | if (env_pv[0] == '0' && env_pv[1] == 'x') | |
4502 | env_pv += 2; | |
bed60192 | 4503 | |
a2098e20 YO |
4504 | for( i = 0; isXDIGIT(*env_pv) && i < PERL_HASH_SEED_BYTES; i++ ) { |
4505 | seed_buffer[i] = READ_XDIGIT(env_pv) << 4; | |
4506 | if ( isXDIGIT(*env_pv)) { | |
4507 | seed_buffer[i] |= READ_XDIGIT(env_pv); | |
7dc86639 | 4508 | } |
7dc86639 | 4509 | } |
a2098e20 YO |
4510 | while (isSPACE(*env_pv)) |
4511 | env_pv++; | |
4512 | ||
4513 | if (*env_pv && !isXDIGIT(*env_pv)) { | |
aac486f1 | 4514 | Perl_warn(aTHX_ "perl: warning: Non hex character in '$ENV{PERL_HASH_SEED}', seed only partially set\n"); |
73cf895c | 4515 | } |
7dc86639 | 4516 | /* should we check for unparsed crap? */ |
a2098e20 YO |
4517 | /* should we warn about unused hex? */ |
4518 | /* should we warn about insufficient hex? */ | |
7dc86639 YO |
4519 | } |
4520 | else | |
1a237f4f | 4521 | #endif /* NO_PERL_HASH_ENV */ |
7dc86639 | 4522 | { |
a2098e20 | 4523 | for( i = 0; i < PERL_HASH_SEED_BYTES; i++ ) { |
f26b33bd | 4524 | seed_buffer[i] = (unsigned char)(Perl_internal_drand48() * (U8_MAX+1)); |
7dc86639 | 4525 | } |
0e0ab621 | 4526 | } |
6a5b4183 | 4527 | #ifdef USE_PERL_PERTURB_KEYS |
0e0ab621 YO |
4528 | { /* initialize PL_hash_rand_bits from the hash seed. |
4529 | * This value is highly volatile, it is updated every | |
4530 | * hash insert, and is used as part of hash bucket chain | |
4531 | * randomization and hash iterator randomization. */ | |
a2098e20 | 4532 | PL_hash_rand_bits= 0xbe49d17f; /* I just picked a number */ |
0e0ab621 | 4533 | for( i = 0; i < sizeof(UV) ; i++ ) { |
6a5b4183 YO |
4534 | PL_hash_rand_bits += seed_buffer[i % PERL_HASH_SEED_BYTES]; |
4535 | PL_hash_rand_bits = ROTL_UV(PL_hash_rand_bits,8); | |
0e0ab621 YO |
4536 | } |
4537 | } | |
95309d6b | 4538 | # ifndef NO_PERL_HASH_ENV |
a2098e20 YO |
4539 | env_pv= PerlEnv_getenv("PERL_PERTURB_KEYS"); |
4540 | if (env_pv) { | |
4541 | if (strEQ(env_pv,"0") || strEQ(env_pv,"NO")) { | |
6a5b4183 | 4542 | PL_hash_rand_bits_enabled= 0; |
a2098e20 | 4543 | } else if (strEQ(env_pv,"1") || strEQ(env_pv,"RANDOM")) { |
6a5b4183 | 4544 | PL_hash_rand_bits_enabled= 1; |
a2098e20 | 4545 | } else if (strEQ(env_pv,"2") || strEQ(env_pv,"DETERMINISTIC")) { |
6a5b4183 YO |
4546 | PL_hash_rand_bits_enabled= 2; |
4547 | } else { | |
a2098e20 | 4548 | Perl_warn(aTHX_ "perl: warning: strange setting in '$ENV{PERL_PERTURB_KEYS}': '%s'\n", env_pv); |
6a5b4183 YO |
4549 | } |
4550 | } | |
95309d6b | 4551 | # endif |
6a5b4183 | 4552 | #endif |
bed60192 | 4553 | } |
27da23d5 JH |
4554 | |
4555 | #ifdef PERL_GLOBAL_STRUCT | |
4556 | ||
bae1192d JH |
4557 | #define PERL_GLOBAL_STRUCT_INIT |
4558 | #include "opcode.h" /* the ppaddr and check */ | |
4559 | ||
27da23d5 JH |
4560 | struct perl_vars * |
4561 | Perl_init_global_struct(pTHX) | |
4562 | { | |
4563 | struct perl_vars *plvarsp = NULL; | |
bae1192d | 4564 | # ifdef PERL_GLOBAL_STRUCT |
c3caa5c3 JH |
4565 | const IV nppaddr = C_ARRAY_LENGTH(Gppaddr); |
4566 | const IV ncheck = C_ARRAY_LENGTH(Gcheck); | |
23491f1d | 4567 | PERL_UNUSED_CONTEXT; |
27da23d5 JH |
4568 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE |
4569 | /* PerlMem_malloc() because can't use even safesysmalloc() this early. */ | |
4570 | plvarsp = (struct perl_vars*)PerlMem_malloc(sizeof(struct perl_vars)); | |
4571 | if (!plvarsp) | |
4572 | exit(1); | |
4573 | # else | |
4574 | plvarsp = PL_VarsPtr; | |
4575 | # endif /* PERL_GLOBAL_STRUCT_PRIVATE */ | |
aadb217d JH |
4576 | # undef PERLVAR |
4577 | # undef PERLVARA | |
4578 | # undef PERLVARI | |
4579 | # undef PERLVARIC | |
115ff745 NC |
4580 | # define PERLVAR(prefix,var,type) /**/ |
4581 | # define PERLVARA(prefix,var,n,type) /**/ | |
4582 | # define PERLVARI(prefix,var,type,init) plvarsp->prefix##var = init; | |
4583 | # define PERLVARIC(prefix,var,type,init) plvarsp->prefix##var = init; | |
27da23d5 JH |
4584 | # include "perlvars.h" |
4585 | # undef PERLVAR | |
4586 | # undef PERLVARA | |
4587 | # undef PERLVARI | |
4588 | # undef PERLVARIC | |
27da23d5 | 4589 | # ifdef PERL_GLOBAL_STRUCT |
bae1192d JH |
4590 | plvarsp->Gppaddr = |
4591 | (Perl_ppaddr_t*) | |
4592 | PerlMem_malloc(nppaddr * sizeof(Perl_ppaddr_t)); | |
27da23d5 JH |
4593 | if (!plvarsp->Gppaddr) |
4594 | exit(1); | |
bae1192d JH |
4595 | plvarsp->Gcheck = |
4596 | (Perl_check_t*) | |
4597 | PerlMem_malloc(ncheck * sizeof(Perl_check_t)); | |
27da23d5 JH |
4598 | if (!plvarsp->Gcheck) |
4599 | exit(1); | |
4600 | Copy(Gppaddr, plvarsp->Gppaddr, nppaddr, Perl_ppaddr_t); | |
4601 | Copy(Gcheck, plvarsp->Gcheck, ncheck, Perl_check_t); | |
4602 | # endif | |
4603 | # ifdef PERL_SET_VARS | |
4604 | PERL_SET_VARS(plvarsp); | |
4605 | # endif | |
5c64bffd NC |
4606 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE |
4607 | plvarsp->Gsv_placeholder.sv_flags = 0; | |
4608 | memset(plvarsp->Ghash_seed, 0, sizeof(plvarsp->Ghash_seed)); | |
4609 | # endif | |
bae1192d JH |
4610 | # undef PERL_GLOBAL_STRUCT_INIT |
4611 | # endif | |
27da23d5 JH |
4612 | return plvarsp; |
4613 | } | |
4614 | ||
4615 | #endif /* PERL_GLOBAL_STRUCT */ | |
4616 | ||
4617 | #ifdef PERL_GLOBAL_STRUCT | |
4618 | ||
4619 | void | |
4620 | Perl_free_global_struct(pTHX_ struct perl_vars *plvarsp) | |
4621 | { | |
c1181d2b DM |
4622 | int veto = plvarsp->Gveto_cleanup; |
4623 | ||
7918f24d | 4624 | PERL_ARGS_ASSERT_FREE_GLOBAL_STRUCT; |
23491f1d | 4625 | PERL_UNUSED_CONTEXT; |
bae1192d | 4626 | # ifdef PERL_GLOBAL_STRUCT |
27da23d5 JH |
4627 | # ifdef PERL_UNSET_VARS |
4628 | PERL_UNSET_VARS(plvarsp); | |
4629 | # endif | |
c1181d2b DM |
4630 | if (veto) |
4631 | return; | |
27da23d5 JH |
4632 | free(plvarsp->Gppaddr); |
4633 | free(plvarsp->Gcheck); | |
bae1192d | 4634 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE |
27da23d5 | 4635 | free(plvarsp); |
bae1192d JH |
4636 | # endif |
4637 | # endif | |
27da23d5 JH |
4638 | } |
4639 | ||
4640 | #endif /* PERL_GLOBAL_STRUCT */ | |
4641 | ||
fe4f188c JH |
4642 | #ifdef PERL_MEM_LOG |
4643 | ||
22ff3130 | 4644 | /* -DPERL_MEM_LOG: the Perl_mem_log_..() is compiled, including |
73d1d973 JC |
4645 | * the default implementation, unless -DPERL_MEM_LOG_NOIMPL is also |
4646 | * given, and you supply your own implementation. | |
65ceff02 | 4647 | * |
2e5b5004 | 4648 | * The default implementation reads a single env var, PERL_MEM_LOG, |
1cd8acb5 JC |
4649 | * expecting one or more of the following: |
4650 | * | |
22ff3130 | 4651 | * \d+ - fd fd to write to : must be 1st (grok_atoUV) |
2e5b5004 | 4652 | * 'm' - memlog was PERL_MEM_LOG=1 |
1cd8acb5 JC |
4653 | * 's' - svlog was PERL_SV_LOG=1 |
4654 | * 't' - timestamp was PERL_MEM_LOG_TIMESTAMP=1 | |
0b0ab801 | 4655 | * |
1cd8acb5 JC |
4656 | * This makes the logger controllable enough that it can reasonably be |
4657 | * added to the system perl. | |
65ceff02 JH |
4658 | */ |
4659 | ||
1cd8acb5 | 4660 | /* -DPERL_MEM_LOG_SPRINTF_BUF_SIZE=X: size of a (stack-allocated) buffer |
65ceff02 JH |
4661 | * the Perl_mem_log_...() will use (either via sprintf or snprintf). |
4662 | */ | |
e352bcff JH |
4663 | #define PERL_MEM_LOG_SPRINTF_BUF_SIZE 128 |
4664 | ||
1cd8acb5 JC |
4665 | /* -DPERL_MEM_LOG_FD=N: the file descriptor the Perl_mem_log_...() |
4666 | * writes to. In the default logger, this is settable at runtime. | |
65ceff02 JH |
4667 | */ |
4668 | #ifndef PERL_MEM_LOG_FD | |
4669 | # define PERL_MEM_LOG_FD 2 /* If STDERR is too boring for you. */ | |
4670 | #endif | |
4671 | ||
73d1d973 | 4672 | #ifndef PERL_MEM_LOG_NOIMPL |
d7a2c63c MHM |
4673 | |
4674 | # ifdef DEBUG_LEAKING_SCALARS | |
4675 | # define SV_LOG_SERIAL_FMT " [%lu]" | |
4676 | # define _SV_LOG_SERIAL_ARG(sv) , (unsigned long) (sv)->sv_debug_serial | |
4677 | # else | |
4678 | # define SV_LOG_SERIAL_FMT | |
4679 | # define _SV_LOG_SERIAL_ARG(sv) | |
4680 | # endif | |
4681 | ||
0b0ab801 | 4682 | static void |
73d1d973 JC |
4683 | S_mem_log_common(enum mem_log_type mlt, const UV n, |
4684 | const UV typesize, const char *type_name, const SV *sv, | |
4685 | Malloc_t oldalloc, Malloc_t newalloc, | |
4686 | const char *filename, const int linenumber, | |
4687 | const char *funcname) | |
0b0ab801 | 4688 | { |
1cd8acb5 | 4689 | const char *pmlenv; |
4ca7bcef | 4690 | |
1cd8acb5 | 4691 | PERL_ARGS_ASSERT_MEM_LOG_COMMON; |
4ca7bcef | 4692 | |
1cd8acb5 JC |
4693 | pmlenv = PerlEnv_getenv("PERL_MEM_LOG"); |
4694 | if (!pmlenv) | |
4695 | return; | |
4696 | if (mlt < MLT_NEW_SV ? strchr(pmlenv,'m') : strchr(pmlenv,'s')) | |
65ceff02 JH |
4697 | { |
4698 | /* We can't use SVs or PerlIO for obvious reasons, | |
4699 | * so we'll use stdio and low-level IO instead. */ | |
4700 | char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE]; | |
1cd8acb5 | 4701 | |
5b692037 | 4702 | # ifdef HAS_GETTIMEOFDAY |
0b0ab801 MHM |
4703 | # define MEM_LOG_TIME_FMT "%10d.%06d: " |
4704 | # define MEM_LOG_TIME_ARG (int)tv.tv_sec, (int)tv.tv_usec | |
4705 | struct timeval tv; | |
65ceff02 | 4706 | gettimeofday(&tv, 0); |
0b0ab801 MHM |
4707 | # else |
4708 | # define MEM_LOG_TIME_FMT "%10d: " | |
4709 | # define MEM_LOG_TIME_ARG (int)when | |
4710 | Time_t when; | |
4711 | (void)time(&when); | |
5b692037 JH |
4712 | # endif |
4713 | /* If there are other OS specific ways of hires time than | |
d0b0e707 | 4714 | * gettimeofday() (see dist/Time-HiRes), the easiest way is |
5b692037 JH |
4715 | * probably that they would be used to fill in the struct |
4716 | * timeval. */ | |
65ceff02 | 4717 | { |
0b0ab801 | 4718 | STRLEN len; |
96e440d2 | 4719 | const char* endptr; |
22ff3130 HS |
4720 | int fd; |
4721 | UV uv; | |
4722 | if (grok_atoUV(pmlenv, &uv, &endptr) /* Ignore endptr. */ | |
4723 | && uv && uv <= PERL_INT_MAX | |
4724 | ) { | |
4725 | fd = (int)uv; | |
4726 | } else { | |
1cd8acb5 | 4727 | fd = PERL_MEM_LOG_FD; |
22ff3130 | 4728 | } |
0b0ab801 | 4729 | |
1cd8acb5 | 4730 | if (strchr(pmlenv, 't')) { |
0b0ab801 MHM |
4731 | len = my_snprintf(buf, sizeof(buf), |
4732 | MEM_LOG_TIME_FMT, MEM_LOG_TIME_ARG); | |
acfd4d8e | 4733 | PERL_UNUSED_RESULT(PerlLIO_write(fd, buf, len)); |
0b0ab801 | 4734 | } |
0b0ab801 MHM |
4735 | switch (mlt) { |
4736 | case MLT_ALLOC: | |
4737 | len = my_snprintf(buf, sizeof(buf), | |
147e3846 KW |
4738 | "alloc: %s:%d:%s: %" IVdf " %" UVuf |
4739 | " %s = %" IVdf ": %" UVxf "\n", | |
0b0ab801 | 4740 | filename, linenumber, funcname, n, typesize, |
bef8a128 | 4741 | type_name, n * typesize, PTR2UV(newalloc)); |
0b0ab801 MHM |
4742 | break; |
4743 | case MLT_REALLOC: | |
4744 | len = my_snprintf(buf, sizeof(buf), | |
147e3846 KW |
4745 | "realloc: %s:%d:%s: %" IVdf " %" UVuf |
4746 | " %s = %" IVdf ": %" UVxf " -> %" UVxf "\n", | |
0b0ab801 | 4747 | filename, linenumber, funcname, n, typesize, |
bef8a128 | 4748 | type_name, n * typesize, PTR2UV(oldalloc), |
0b0ab801 MHM |
4749 | PTR2UV(newalloc)); |
4750 | break; | |
4751 | case MLT_FREE: | |
4752 | len = my_snprintf(buf, sizeof(buf), | |
147e3846 | 4753 | "free: %s:%d:%s: %" UVxf "\n", |
0b0ab801 MHM |
4754 | filename, linenumber, funcname, |
4755 | PTR2UV(oldalloc)); | |
4756 | break; | |
d7a2c63c MHM |
4757 | case MLT_NEW_SV: |
4758 | case MLT_DEL_SV: | |
4759 | len = my_snprintf(buf, sizeof(buf), | |
147e3846 | 4760 | "%s_SV: %s:%d:%s: %" UVxf SV_LOG_SERIAL_FMT "\n", |
d7a2c63c MHM |
4761 | mlt == MLT_NEW_SV ? "new" : "del", |
4762 | filename, linenumber, funcname, | |
4763 | PTR2UV(sv) _SV_LOG_SERIAL_ARG(sv)); | |
4764 | break; | |
73d1d973 JC |
4765 | default: |
4766 | len = 0; | |
0b0ab801 | 4767 | } |
acfd4d8e | 4768 | PERL_UNUSED_RESULT(PerlLIO_write(fd, buf, len)); |
65ceff02 JH |
4769 | } |
4770 | } | |
0b0ab801 | 4771 | } |
73d1d973 JC |
4772 | #endif /* !PERL_MEM_LOG_NOIMPL */ |
4773 | ||
4774 | #ifndef PERL_MEM_LOG_NOIMPL | |
4775 | # define \ | |
4776 | mem_log_common_if(alty, num, tysz, tynm, sv, oal, nal, flnm, ln, fnnm) \ | |
4777 | mem_log_common (alty, num, tysz, tynm, sv, oal, nal, flnm, ln, fnnm) | |
4778 | #else | |
4779 | /* this is suboptimal, but bug compatible. User is providing their | |
486ec47a | 4780 | own implementation, but is getting these functions anyway, and they |
73d1d973 JC |
4781 | do nothing. But _NOIMPL users should be able to cope or fix */ |
4782 | # define \ | |
4783 | mem_log_common_if(alty, num, tysz, tynm, u, oal, nal, flnm, ln, fnnm) \ | |
4784 | /* mem_log_common_if_PERL_MEM_LOG_NOIMPL */ | |
0b0ab801 MHM |
4785 | #endif |
4786 | ||
4787 | Malloc_t | |
73d1d973 JC |
4788 | Perl_mem_log_alloc(const UV n, const UV typesize, const char *type_name, |
4789 | Malloc_t newalloc, | |
4790 | const char *filename, const int linenumber, | |
4791 | const char *funcname) | |
4792 | { | |
6fb87544 MH |
4793 | PERL_ARGS_ASSERT_MEM_LOG_ALLOC; |
4794 | ||
73d1d973 JC |
4795 | mem_log_common_if(MLT_ALLOC, n, typesize, type_name, |
4796 | NULL, NULL, newalloc, | |
4797 | filename, linenumber, funcname); | |
fe4f188c JH |
4798 | return newalloc; |
4799 | } | |
4800 | ||
4801 | Malloc_t | |
73d1d973 JC |
4802 | Perl_mem_log_realloc(const UV n, const UV typesize, const char *type_name, |
4803 | Malloc_t oldalloc, Malloc_t newalloc, | |
4804 | const char *filename, const int linenumber, | |
4805 | const char *funcname) | |
4806 | { | |
6fb87544 MH |
4807 | PERL_ARGS_ASSERT_MEM_LOG_REALLOC; |
4808 | ||
73d1d973 JC |
4809 | mem_log_common_if(MLT_REALLOC, n, typesize, type_name, |
4810 | NULL, oldalloc, newalloc, | |
4811 | filename, linenumber, funcname); | |
fe4f188c JH |
4812 | return newalloc; |
4813 | } | |
4814 | ||
4815 | Malloc_t | |
73d1d973 JC |
4816 | Perl_mem_log_free(Malloc_t oldalloc, |
4817 | const char *filename, const int linenumber, | |
4818 | const char *funcname) | |
fe4f188c | 4819 | { |
6fb87544 MH |
4820 | PERL_ARGS_ASSERT_MEM_LOG_FREE; |
4821 | ||
73d1d973 JC |
4822 | mem_log_common_if(MLT_FREE, 0, 0, "", NULL, oldalloc, NULL, |
4823 | filename, linenumber, funcname); | |
fe4f188c JH |
4824 | return oldalloc; |
4825 | } | |
4826 | ||
d7a2c63c | 4827 | void |
73d1d973 JC |
4828 | Perl_mem_log_new_sv(const SV *sv, |
4829 | const char *filename, const int linenumber, | |
4830 | const char *funcname) | |
d7a2c63c | 4831 | { |
73d1d973 JC |
4832 | mem_log_common_if(MLT_NEW_SV, 0, 0, "", sv, NULL, NULL, |
4833 | filename, linenumber, funcname); | |
d7a2c63c MHM |
4834 | } |
4835 | ||
4836 | void | |
73d1d973 JC |
4837 | Perl_mem_log_del_sv(const SV *sv, |
4838 | const char *filename, const int linenumber, | |
4839 | const char *funcname) | |
d7a2c63c | 4840 | { |
73d1d973 JC |
4841 | mem_log_common_if(MLT_DEL_SV, 0, 0, "", sv, NULL, NULL, |
4842 | filename, linenumber, funcname); | |
d7a2c63c MHM |
4843 | } |
4844 | ||
fe4f188c JH |
4845 | #endif /* PERL_MEM_LOG */ |
4846 | ||
66610fdd | 4847 | /* |
a4eca1d4 JH |
4848 | =for apidoc quadmath_format_single |
4849 | ||
796b6530 | 4850 | C<quadmath_snprintf()> is very strict about its C<format> string and will |
801caa78 | 4851 | fail, returning -1, if the format is invalid. It accepts exactly |
a4eca1d4 JH |
4852 | one format spec. |
4853 | ||
796b6530 | 4854 | C<quadmath_format_single()> checks that the intended single spec looks |
a4eca1d4 JH |
4855 | sane: begins with C<%>, has only one C<%>, ends with C<[efgaEFGA]>, |
4856 | and has C<Q> before it. This is not a full "printf syntax check", | |
4857 | just the basics. | |
4858 | ||
4859 | Returns the format if it is valid, NULL if not. | |
4860 | ||
796b6530 | 4861 | C<quadmath_format_single()> can and will actually patch in the missing |
a4eca1d4 JH |
4862 | C<Q>, if necessary. In this case it will return the modified copy of |
4863 | the format, B<which the caller will need to free.> | |
4864 | ||
4865 | See also L</quadmath_format_needed>. | |
4866 | ||
4867 | =cut | |
4868 | */ | |
4869 | #ifdef USE_QUADMATH | |
4870 | const char* | |
4871 | Perl_quadmath_format_single(const char* format) | |
4872 | { | |
4873 | STRLEN len; | |
4874 | ||
4875 | PERL_ARGS_ASSERT_QUADMATH_FORMAT_SINGLE; | |
4876 | ||
4877 | if (format[0] != '%' || strchr(format + 1, '%')) | |
4878 | return NULL; | |
4879 | len = strlen(format); | |
4880 | /* minimum length three: %Qg */ | |
4881 | if (len < 3 || strchr("efgaEFGA", format[len - 1]) == NULL) | |
4882 | return NULL; | |
4883 | if (format[len - 2] != 'Q') { | |
4884 | char* fixed; | |
4885 | Newx(fixed, len + 1, char); | |
4886 | memcpy(fixed, format, len - 1); | |
4887 | fixed[len - 1] = 'Q'; | |
4888 | fixed[len ] = format[len - 1]; | |
4889 | fixed[len + 1] = 0; | |
4890 | return (const char*)fixed; | |
4891 | } | |
4892 | return format; | |
4893 | } | |
4894 | #endif | |
4895 | ||
4896 | /* | |
4897 | =for apidoc quadmath_format_needed | |
4898 | ||
796b6530 KW |
4899 | C<quadmath_format_needed()> returns true if the C<format> string seems to |
4900 | contain at least one non-Q-prefixed C<%[efgaEFGA]> format specifier, | |
a4eca1d4 JH |
4901 | or returns false otherwise. |
4902 | ||
4903 | The format specifier detection is not complete printf-syntax detection, | |
4904 | but it should catch most common cases. | |
4905 | ||
4906 | If true is returned, those arguments B<should> in theory be processed | |
796b6530 | 4907 | with C<quadmath_snprintf()>, but in case there is more than one such |
a4eca1d4 JH |
4908 | format specifier (see L</quadmath_format_single>), and if there is |
4909 | anything else beyond that one (even just a single byte), they | |
796b6530 | 4910 | B<cannot> be processed because C<quadmath_snprintf()> is very strict, |
a4eca1d4 JH |
4911 | accepting only one format spec, and nothing else. |
4912 | In this case, the code should probably fail. | |
4913 | ||
4914 | =cut | |
4915 | */ | |
4916 | #ifdef USE_QUADMATH | |
4917 | bool | |
4918 | Perl_quadmath_format_needed(const char* format) | |
4919 | { | |
4920 | const char *p = format; | |
4921 | const char *q; | |
4922 | ||
4923 | PERL_ARGS_ASSERT_QUADMATH_FORMAT_NEEDED; | |
4924 | ||
4925 | while ((q = strchr(p, '%'))) { | |
4926 | q++; | |
4927 | if (*q == '+') /* plus */ | |
4928 | q++; | |
4929 | if (*q == '#') /* alt */ | |
4930 | q++; | |
4931 | if (*q == '*') /* width */ | |
4932 | q++; | |
4933 | else { | |
4934 | if (isDIGIT(*q)) { | |
4935 | while (isDIGIT(*q)) q++; | |
4936 | } | |
4937 | } | |
4938 | if (*q == '.' && (q[1] == '*' || isDIGIT(q[1]))) { /* prec */ | |
4939 | q++; | |
4940 | if (*q == '*') | |
4941 | q++; | |
4942 | else | |
4943 | while (isDIGIT(*q)) q++; | |
4944 | } | |
4945 | if (strchr("efgaEFGA", *q)) /* Would have needed 'Q' in front. */ | |
4946 | return TRUE; | |
4947 | p = q + 1; | |
4948 | } | |
4949 | return FALSE; | |
4950 | } | |
4951 | #endif | |
4952 | ||
4953 | /* | |
d9fad198 JH |
4954 | =for apidoc my_snprintf |
4955 | ||
13d66b05 AC |
4956 | The C library C<snprintf> functionality (using C<vsnprintf>). |
4957 | Consider using C<sv_vcatpvf> instead. | |
d9fad198 JH |
4958 | |
4959 | =cut | |
4960 | */ | |
4961 | int | |
4962 | Perl_my_snprintf(char *buffer, const Size_t len, const char *format, ...) | |
d9fad198 | 4963 | { |
a4eca1d4 | 4964 | int retval = -1; |
d9fad198 | 4965 | va_list ap; |
7918f24d | 4966 | PERL_ARGS_ASSERT_MY_SNPRINTF; |
d9fad198 | 4967 | va_start(ap, format); |
a4eca1d4 JH |
4968 | #ifdef USE_QUADMATH |
4969 | { | |
4970 | const char* qfmt = quadmath_format_single(format); | |
4971 | bool quadmath_valid = FALSE; | |
4972 | if (qfmt) { | |
4973 | /* If the format looked promising, use it as quadmath. */ | |
4974 | retval = quadmath_snprintf(buffer, len, qfmt, va_arg(ap, NV)); | |
fb926b48 | 4975 | if (retval == -1) { |
8b78e936 TC |
4976 | if (qfmt != format) { |
4977 | dTHX; | |
fb926b48 | 4978 | SAVEFREEPV(qfmt); |
8b78e936 | 4979 | } |
a4eca1d4 | 4980 | Perl_croak_nocontext("panic: quadmath_snprintf failed, format \"%s\"", qfmt); |
fb926b48 | 4981 | } |
a4eca1d4 JH |
4982 | quadmath_valid = TRUE; |
4983 | if (qfmt != format) | |
4984 | Safefree(qfmt); | |
4985 | qfmt = NULL; | |
4986 | } | |
4987 | assert(qfmt == NULL); | |
4988 | /* quadmath_format_single() will return false for example for | |
4989 | * "foo = %g", or simply "%g". We could handle the %g by | |
4990 | * using quadmath for the NV args. More complex cases of | |
4991 | * course exist: "foo = %g, bar = %g", or "foo=%Qg" (otherwise | |
4992 | * quadmath-valid but has stuff in front). | |
4993 | * | |
4994 | * Handling the "Q-less" cases right would require walking | |
4995 | * through the va_list and rewriting the format, calling | |
4996 | * quadmath for the NVs, building a new va_list, and then | |
13d66b05 | 4997 | * letting vsnprintf to take care of the other |
a4eca1d4 JH |
4998 | * arguments. This may be doable. |
4999 | * | |
5000 | * We do not attempt that now. But for paranoia, we here try | |
5001 | * to detect some common (but not all) cases where the | |
5002 | * "Q-less" %[efgaEFGA] formats are present, and die if | |
5003 | * detected. This doesn't fix the problem, but it stops the | |
13d66b05 | 5004 | * vsnprintf pulling doubles off the va_list when |
a4eca1d4 JH |
5005 | * __float128 NVs should be pulled off instead. |
5006 | * | |
5007 | * If quadmath_format_needed() returns false, we are reasonably | |
5008 | * certain that we can call vnsprintf() or vsprintf() safely. */ | |
5009 | if (!quadmath_valid && quadmath_format_needed(format)) | |
5010 | Perl_croak_nocontext("panic: quadmath_snprintf failed, format \"%s\"", format); | |
5011 | ||
5012 | } | |
5013 | #endif | |
5014 | if (retval == -1) | |
a4eca1d4 | 5015 | retval = vsnprintf(buffer, len, format, ap); |
d9fad198 | 5016 | va_end(ap); |
7dac5c64 | 5017 | /* vsnprintf() shows failure with >= len */ |
13d66b05 | 5018 | if (len > 0 && (Size_t)retval >= len) |
dbf7dff6 | 5019 | Perl_croak_nocontext("panic: my_snprintf buffer overflow"); |
d9fad198 JH |
5020 | return retval; |
5021 | } | |
5022 | ||
5023 | /* | |
5024 | =for apidoc my_vsnprintf | |
5025 | ||
13d66b05 | 5026 | The C library C<vsnprintf>. Consider using C<sv_vcatpvf> instead. |
d9fad198 JH |
5027 | |
5028 | =cut | |
5029 | */ | |
5030 | int | |
5031 | Perl_my_vsnprintf(char *buffer, const Size_t len, const char *format, va_list ap) | |
d9fad198 | 5032 | { |
a4eca1d4 JH |
5033 | #ifdef USE_QUADMATH |
5034 | PERL_UNUSED_ARG(buffer); | |
5035 | PERL_UNUSED_ARG(len); | |
5036 | PERL_UNUSED_ARG(format); | |
bf49eae4 DM |
5037 | /* the cast is to avoid gcc -Wsizeof-array-argument complaining */ |
5038 | PERL_UNUSED_ARG((void*)ap); | |
a4eca1d4 JH |
5039 | Perl_croak_nocontext("panic: my_vsnprintf not available with quadmath"); |
5040 | return 0; | |
5041 | #else | |
d9fad198 | 5042 | int retval; |
d9fad198 JH |
5043 | #ifdef NEED_VA_COPY |
5044 | va_list apc; | |
7918f24d NC |
5045 | |
5046 | PERL_ARGS_ASSERT_MY_VSNPRINTF; | |
239fec62 | 5047 | Perl_va_copy(ap, apc); |
d9fad198 | 5048 | retval = vsnprintf(buffer, len, format, apc); |
d4825b27 | 5049 | va_end(apc); |
d9fad198 | 5050 | #else |
d9fad198 | 5051 | retval = vsnprintf(buffer, len, format, ap); |
5b692037 | 5052 | #endif /* #ifdef NEED_VA_COPY */ |
7dac5c64 | 5053 | /* vsnprintf() shows failure with >= len */ |
13d66b05 | 5054 | if (len > 0 && (Size_t)retval >= len) |
dbf7dff6 | 5055 | Perl_croak_nocontext("panic: my_vsnprintf buffer overflow"); |
d9fad198 | 5056 | return retval; |
a4eca1d4 | 5057 | #endif |
d9fad198 JH |
5058 | } |
5059 | ||
b0269e46 AB |
5060 | void |
5061 | Perl_my_clearenv(pTHX) | |
5062 | { | |
5063 | dVAR; | |
5064 | #if ! defined(PERL_MICRO) | |
5065 | # if defined(PERL_IMPLICIT_SYS) || defined(WIN32) | |
5066 | PerlEnv_clearenv(); | |
5067 | # else /* ! (PERL_IMPLICIT_SYS || WIN32) */ | |
5068 | # if defined(USE_ENVIRON_ARRAY) | |
5069 | # if defined(USE_ITHREADS) | |
5070 | /* only the parent thread can clobber the process environment */ | |
5071 | if (PL_curinterp == aTHX) | |
5072 | # endif /* USE_ITHREADS */ | |
5073 | { | |
5074 | # if ! defined(PERL_USE_SAFE_PUTENV) | |
5075 | if ( !PL_use_safe_putenv) { | |
5076 | I32 i; | |
5077 | if (environ == PL_origenviron) | |
5078 | environ = (char**)safesysmalloc(sizeof(char*)); | |
5079 | else | |
5080 | for (i = 0; environ[i]; i++) | |
5081 | (void)safesysfree(environ[i]); | |
5082 | } | |
5083 | environ[0] = NULL; | |
5084 | # else /* PERL_USE_SAFE_PUTENV */ | |
5085 | # if defined(HAS_CLEARENV) | |
5086 | (void)clearenv(); | |
5087 | # elif defined(HAS_UNSETENV) | |
5088 | int bsiz = 80; /* Most envvar names will be shorter than this. */ | |
a96bc635 | 5089 | char *buf = (char*)safesysmalloc(bsiz); |
b0269e46 AB |
5090 | while (*environ != NULL) { |
5091 | char *e = strchr(*environ, '='); | |
b57a0404 | 5092 | int l = e ? e - *environ : (int)strlen(*environ); |
b0269e46 AB |
5093 | if (bsiz < l + 1) { |
5094 | (void)safesysfree(buf); | |
1bdfa2de | 5095 | bsiz = l + 1; /* + 1 for the \0. */ |
a96bc635 | 5096 | buf = (char*)safesysmalloc(bsiz); |
b0269e46 | 5097 | } |
82d8bb49 NC |
5098 | memcpy(buf, *environ, l); |
5099 | buf[l] = '\0'; | |
b0269e46 AB |
5100 | (void)unsetenv(buf); |
5101 | } | |
5102 | (void)safesysfree(buf); | |
5103 | # else /* ! HAS_CLEARENV && ! HAS_UNSETENV */ | |
5104 | /* Just null environ and accept the leakage. */ | |
5105 | *environ = NULL; | |
5106 | # endif /* HAS_CLEARENV || HAS_UNSETENV */ | |
5107 | # endif /* ! PERL_USE_SAFE_PUTENV */ | |
5108 | } | |
5109 | # endif /* USE_ENVIRON_ARRAY */ | |
5110 | # endif /* PERL_IMPLICIT_SYS || WIN32 */ | |
5111 | #endif /* PERL_MICRO */ | |
5112 | } | |
5113 | ||
f16dd614 DM |
5114 | #ifdef PERL_IMPLICIT_CONTEXT |
5115 | ||
53d44271 | 5116 | /* Implements the MY_CXT_INIT macro. The first time a module is loaded, |
f16dd614 DM |
5117 | the global PL_my_cxt_index is incremented, and that value is assigned to |
5118 | that module's static my_cxt_index (who's address is passed as an arg). | |
5119 | Then, for each interpreter this function is called for, it makes sure a | |
5120 | void* slot is available to hang the static data off, by allocating or | |
5121 | extending the interpreter's PL_my_cxt_list array */ | |
5122 | ||
53d44271 | 5123 | #ifndef PERL_GLOBAL_STRUCT_PRIVATE |
f16dd614 DM |
5124 | void * |
5125 | Perl_my_cxt_init(pTHX_ int *index, size_t size) | |
5126 | { | |
97aff369 | 5127 | dVAR; |
f16dd614 | 5128 | void *p; |
7918f24d | 5129 | PERL_ARGS_ASSERT_MY_CXT_INIT; |
f16dd614 DM |
5130 | if (*index == -1) { |
5131 | /* this module hasn't been allocated an index yet */ | |
5132 | MUTEX_LOCK(&PL_my_ctx_mutex); | |
5133 | *index = PL_my_cxt_index++; | |
5134 | MUTEX_UNLOCK(&PL_my_ctx_mutex); | |
5135 | } | |
5136 | ||
5137 | /* make sure the array is big enough */ | |
4c901e72 DM |
5138 | if (PL_my_cxt_size <= *index) { |
5139 | if (PL_my_cxt_size) { | |
00195859 HS |
5140 | IV new_size = PL_my_cxt_size; |
5141 | while (new_size <= *index) | |
5142 | new_size *= 2; | |
5143 | Renew(PL_my_cxt_list, new_size, void *); | |
5144 | PL_my_cxt_size = new_size; | |
f16dd614 DM |
5145 | } |
5146 | else { | |
5147 | PL_my_cxt_size = 16; | |
5148 | Newx(PL_my_cxt_list, PL_my_cxt_size, void *); | |
5149 | } | |
5150 | } | |
5151 | /* newSV() allocates one more than needed */ | |
5152 | p = (void*)SvPVX(newSV(size-1)); | |
5153 | PL_my_cxt_list[*index] = p; | |
5154 | Zero(p, size, char); | |
5155 | return p; | |
5156 | } | |
53d44271 JH |
5157 | |
5158 | #else /* #ifndef PERL_GLOBAL_STRUCT_PRIVATE */ | |
5159 | ||
5160 | int | |
5161 | Perl_my_cxt_index(pTHX_ const char *my_cxt_key) | |
5162 | { | |
5163 | dVAR; | |
5164 | int index; | |
5165 | ||
7918f24d NC |
5166 | PERL_ARGS_ASSERT_MY_CXT_INDEX; |
5167 | ||
53d44271 JH |
5168 | for (index = 0; index < PL_my_cxt_index; index++) { |
5169 | const char *key = PL_my_cxt_keys[index]; | |
5170 | /* try direct pointer compare first - there are chances to success, | |
5171 | * and it's much faster. | |
5172 | */ | |
5173 | if ((key == my_cxt_key) || strEQ(key, my_cxt_key)) | |
5174 | return index; | |
5175 | } | |
5176 | return -1; | |
5177 | } | |
5178 | ||
5179 | void * | |
5180 | Perl_my_cxt_init(pTHX_ const char *my_cxt_key, size_t size) | |
5181 | { | |
5182 | dVAR; | |
5183 | void *p; | |
5184 | int index; | |
5185 | ||
7918f24d NC |
5186 | PERL_ARGS_ASSERT_MY_CXT_INIT; |
5187 | ||
53d44271 JH |
5188 | index = Perl_my_cxt_index(aTHX_ my_cxt_key); |
5189 | if (index == -1) { | |
5190 | /* this module hasn't been allocated an index yet */ | |
5191 | MUTEX_LOCK(&PL_my_ctx_mutex); | |
5192 | index = PL_my_cxt_index++; | |
5193 | MUTEX_UNLOCK(&PL_my_ctx_mutex); | |
5194 | } | |
5195 | ||
5196 | /* make sure the array is big enough */ | |
5197 | if (PL_my_cxt_size <= index) { | |
5198 | int old_size = PL_my_cxt_size; | |
5199 | int i; | |
5200 | if (PL_my_cxt_size) { | |
00195859 HS |
5201 | IV new_size = PL_my_cxt_size; |
5202 | while (new_size <= index) | |
5203 | new_size *= 2; | |
5204 | Renew(PL_my_cxt_list, new_size, void *); | |
5205 | Renew(PL_my_cxt_keys, new_size, const char *); | |
5206 | PL_my_cxt_size = new_size; | |
53d44271 JH |
5207 | } |
5208 | else { | |
5209 | PL_my_cxt_size = 16; | |
5210 | Newx(PL_my_cxt_list, PL_my_cxt_size, void *); | |
5211 | Newx(PL_my_cxt_keys, PL_my_cxt_size, const char *); | |
5212 | } | |
5213 | for (i = old_size; i < PL_my_cxt_size; i++) { | |
5214 | PL_my_cxt_keys[i] = 0; | |
5215 | PL_my_cxt_list[i] = 0; | |
5216 | } | |
5217 | } | |
5218 | PL_my_cxt_keys[index] = my_cxt_key; | |
5219 | /* newSV() allocates one more than needed */ | |
5220 | p = (void*)SvPVX(newSV(size-1)); | |
5221 | PL_my_cxt_list[index] = p; | |
5222 | Zero(p, size, char); | |
5223 | return p; | |
5224 | } | |
5225 | #endif /* #ifndef PERL_GLOBAL_STRUCT_PRIVATE */ | |
5226 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
f16dd614 | 5227 | |
db6e00bd | 5228 | |
5ec05c96 DM |
5229 | /* Perl_xs_handshake(): |
5230 | implement the various XS_*_BOOTCHECK macros, which are added to .c | |
5231 | files by ExtUtils::ParseXS, to check that the perl the module was built | |
5232 | with is binary compatible with the running perl. | |
5233 | ||
5234 | usage: | |
5235 | Perl_xs_handshake(U32 key, void * v_my_perl, const char * file, | |
5236 | [U32 items, U32 ax], [char * api_version], [char * xs_version]) | |
5237 | ||
5238 | The meaning of the varargs is determined the U32 key arg (which is not | |
5239 | a format string). The fields of key are assembled by using HS_KEY(). | |
5240 | ||
5241 | Under PERL_IMPLICIT_CONTEX, the v_my_perl arg is of type | |
5242 | "PerlInterpreter *" and represents the callers context; otherwise it is | |
5243 | of type "CV *", and is the boot xsub's CV. | |
5244 | ||
5245 | v_my_perl will catch where a threaded future perl526.dll calling IO.dll | |
5246 | for example, and IO.dll was linked with threaded perl524.dll, and both | |
5247 | perl526.dll and perl524.dll are in %PATH and the Win32 DLL loader | |
5248 | successfully can load IO.dll into the process but simultaneously it | |
5249 | loaded an interpreter of a different version into the process, and XS | |
5250 | code will naturally pass SV*s created by perl524.dll for perl526.dll to | |
5251 | use through perl526.dll's my_perl->Istack_base. | |
5252 | ||
5253 | v_my_perl cannot be the first arg, since then 'key' will be out of | |
5254 | place in a threaded vs non-threaded mixup; and analyzing the key | |
5255 | number's bitfields won't reveal the problem, since it will be a valid | |
5256 | key (unthreaded perl) on interp side, but croak will report the XS mod's | |
5257 | key as gibberish (it is really a my_perl ptr) (threaded XS mod); or if | |
5258 | it's a threaded perl and an unthreaded XS module, threaded perl will | |
5259 | look at an uninit C stack or an uninit register to get 'key' | |
5260 | (remember that it assumes that the 1st arg is the interp cxt). | |
5261 | ||
5262 | 'file' is the source filename of the caller. | |
5263 | */ | |
5264 | ||
db6e00bd | 5265 | I32 |
9a189793 | 5266 | Perl_xs_handshake(const U32 key, void * v_my_perl, const char * file, ...) |
db6e00bd DD |
5267 | { |
5268 | va_list args; | |
5269 | U32 items, ax; | |
9a189793 DD |
5270 | void * got; |
5271 | void * need; | |
db6e00bd DD |
5272 | #ifdef PERL_IMPLICIT_CONTEXT |
5273 | dTHX; | |
9a189793 DD |
5274 | tTHX xs_interp; |
5275 | #else | |
5276 | CV* cv; | |
5277 | SV *** xs_spp; | |
db6e00bd DD |
5278 | #endif |
5279 | PERL_ARGS_ASSERT_XS_HANDSHAKE; | |
9a189793 | 5280 | va_start(args, file); |
db6e00bd | 5281 | |
3ef6b8e9 | 5282 | got = INT2PTR(void*, (UV)(key & HSm_KEY_MATCH)); |
9a189793 | 5283 | need = (void *)(HS_KEY(FALSE, FALSE, "", "") & HSm_KEY_MATCH); |
3ef6b8e9 | 5284 | if (UNLIKELY(got != need)) |
9a189793 | 5285 | goto bad_handshake; |
db6e00bd DD |
5286 | /* try to catch where a 2nd threaded perl interp DLL is loaded into a process |
5287 | by a XS DLL compiled against the wrong interl DLL b/c of bad @INC, and the | |
5288 | 2nd threaded perl interp DLL never initialized its TLS/PERL_SYS_INIT3 so | |
5289 | dTHX call from 2nd interp DLL can't return the my_perl that pp_entersub | |
5290 | passed to the XS DLL */ | |
db6e00bd | 5291 | #ifdef PERL_IMPLICIT_CONTEXT |
9a189793 DD |
5292 | xs_interp = (tTHX)v_my_perl; |
5293 | got = xs_interp; | |
5294 | need = my_perl; | |
db6e00bd DD |
5295 | #else |
5296 | /* try to catch where an unthreaded perl interp DLL (for ex. perl522.dll) is | |
5297 | loaded into a process by a XS DLL built by an unthreaded perl522.dll perl, | |
5298 | but the DynaLoder/Perl that started the process and loaded the XS DLL is | |
5299 | unthreaded perl524.dll, since unthreadeds don't pass my_perl (a unique *) | |
5300 | through pp_entersub, use a unique value (which is a pointer to PL_stack_sp's | |
5301 | location in the unthreaded perl binary) stored in CV * to figure out if this | |
5302 | Perl_xs_handshake was called by the same pp_entersub */ | |
9a189793 DD |
5303 | cv = (CV*)v_my_perl; |
5304 | xs_spp = (SV***)CvHSCXT(cv); | |
5305 | got = xs_spp; | |
5306 | need = &PL_stack_sp; | |
5307 | #endif | |
5308 | if(UNLIKELY(got != need)) { | |
5309 | bad_handshake:/* recycle branch and string from above */ | |
5310 | if(got != (void *)HSf_NOCHK) | |
fe60b4f6 DM |
5311 | noperl_die("%s: loadable library and perl binaries are mismatched" |
5312 | " (got handshake key %p, needed %p)\n", | |
9a189793 DD |
5313 | file, got, need); |
5314 | } | |
5315 | ||
5316 | if(key & HSf_SETXSUBFN) { /* this might be called from a module bootstrap */ | |
5317 | SAVEPPTR(PL_xsubfilename);/* which was require'd from a XSUB BEGIN */ | |
5318 | PL_xsubfilename = file; /* so the old name must be restored for | |
5319 | additional XSUBs to register themselves */ | |
9b669ea1 DD |
5320 | /* XSUBs can't be perl lang/perl5db.pl debugged |
5321 | if (PERLDB_LINE_OR_SAVESRC) | |
5322 | (void)gv_fetchfile(file); */ | |
db6e00bd DD |
5323 | } |
5324 | ||
5325 | if(key & HSf_POPMARK) { | |
5326 | ax = POPMARK; | |
5327 | { SV **mark = PL_stack_base + ax++; | |
5328 | { dSP; | |
5329 | items = (I32)(SP - MARK); | |
5330 | } | |
5331 | } | |
5332 | } else { | |
5333 | items = va_arg(args, U32); | |
5334 | ax = va_arg(args, U32); | |
5335 | } | |
5336 | { | |
5337 | U32 apiverlen; | |
5338 | assert(HS_GETAPIVERLEN(key) <= UCHAR_MAX); | |
ea91b243 | 5339 | if((apiverlen = HS_GETAPIVERLEN(key))) { |
db6e00bd DD |
5340 | char * api_p = va_arg(args, char*); |
5341 | if(apiverlen != sizeof("v" PERL_API_VERSION_STRING)-1 | |
5342 | || memNE(api_p, "v" PERL_API_VERSION_STRING, | |
5343 | sizeof("v" PERL_API_VERSION_STRING)-1)) | |
147e3846 | 5344 | Perl_croak_nocontext("Perl API version %s of %" SVf " does not match %s", |
db6e00bd DD |
5345 | api_p, SVfARG(PL_stack_base[ax + 0]), |
5346 | "v" PERL_API_VERSION_STRING); | |
5347 | } | |
5348 | } | |
5349 | { | |
5350 | U32 xsverlen; | |
5351 | assert(HS_GETXSVERLEN(key) <= UCHAR_MAX && HS_GETXSVERLEN(key) <= HS_APIVERLEN_MAX); | |
ea91b243 | 5352 | if((xsverlen = HS_GETXSVERLEN(key))) |
672cbd15 | 5353 | S_xs_version_bootcheck(aTHX_ |
db6e00bd DD |
5354 | items, ax, va_arg(args, char*), xsverlen); |
5355 | } | |
5356 | va_end(args); | |
5357 | return ax; | |
5358 | } | |
5359 | ||
5ec05c96 | 5360 | |
672cbd15 DD |
5361 | STATIC void |
5362 | S_xs_version_bootcheck(pTHX_ U32 items, U32 ax, const char *xs_p, | |
e9b067d9 NC |
5363 | STRLEN xs_len) |
5364 | { | |
5365 | SV *sv; | |
5366 | const char *vn = NULL; | |
a2f871a2 | 5367 | SV *const module = PL_stack_base[ax]; |
e9b067d9 NC |
5368 | |
5369 | PERL_ARGS_ASSERT_XS_VERSION_BOOTCHECK; | |
5370 | ||
5371 | if (items >= 2) /* version supplied as bootstrap arg */ | |
5372 | sv = PL_stack_base[ax + 1]; | |
5373 | else { | |
5374 | /* XXX GV_ADDWARN */ | |
a2f871a2 | 5375 | vn = "XS_VERSION"; |
147e3846 | 5376 | sv = get_sv(Perl_form(aTHX_ "%" SVf "::%s", SVfARG(module), vn), 0); |
a2f871a2 NC |
5377 | if (!sv || !SvOK(sv)) { |
5378 | vn = "VERSION"; | |
147e3846 | 5379 | sv = get_sv(Perl_form(aTHX_ "%" SVf "::%s", SVfARG(module), vn), 0); |
a2f871a2 | 5380 | } |
e9b067d9 NC |
5381 | } |
5382 | if (sv) { | |
f9cc56fa | 5383 | SV *xssv = Perl_newSVpvn_flags(aTHX_ xs_p, xs_len, SVs_TEMP); |
573a19fb | 5384 | SV *pmsv = sv_isobject(sv) && sv_derived_from(sv, "version") |
f9cc56fa | 5385 | ? sv : sv_2mortal(new_version(sv)); |
e9b067d9 NC |
5386 | xssv = upg_version(xssv, 0); |
5387 | if ( vcmp(pmsv,xssv) ) { | |
a2f871a2 | 5388 | SV *string = vstringify(xssv); |
147e3846 | 5389 | SV *xpt = Perl_newSVpvf(aTHX_ "%" SVf " object version %" SVf |
c1f6cd39 | 5390 | " does not match ", SVfARG(module), SVfARG(string)); |
a2f871a2 NC |
5391 | |
5392 | SvREFCNT_dec(string); | |
5393 | string = vstringify(pmsv); | |
5394 | ||
5395 | if (vn) { | |
147e3846 | 5396 | Perl_sv_catpvf(aTHX_ xpt, "$%" SVf "::%s %" SVf, SVfARG(module), vn, |
c1f6cd39 | 5397 | SVfARG(string)); |
a2f871a2 | 5398 | } else { |
147e3846 | 5399 | Perl_sv_catpvf(aTHX_ xpt, "bootstrap parameter %" SVf, SVfARG(string)); |
a2f871a2 NC |
5400 | } |
5401 | SvREFCNT_dec(string); | |
5402 | ||
e9b067d9 | 5403 | Perl_sv_2mortal(aTHX_ xpt); |
e9b067d9 | 5404 | Perl_croak_sv(aTHX_ xpt); |
f9cc56fa | 5405 | } |
e9b067d9 NC |
5406 | } |
5407 | } | |
5408 | ||
f46a3253 KW |
5409 | /* |
5410 | =for apidoc my_strlcat | |
5411 | ||
5412 | The C library C<strlcat> if available, or a Perl implementation of it. | |
6602b933 | 5413 | This operates on C C<NUL>-terminated strings. |
f46a3253 KW |
5414 | |
5415 | C<my_strlcat()> appends string C<src> to the end of C<dst>. It will append at | |
6602b933 | 5416 | most S<C<size - strlen(dst) - 1>> characters. It will then C<NUL>-terminate, |
f46a3253 KW |
5417 | unless C<size> is 0 or the original C<dst> string was longer than C<size> (in |
5418 | practice this should not happen as it means that either C<size> is incorrect or | |
6602b933 | 5419 | that C<dst> is not a proper C<NUL>-terminated string). |
f46a3253 KW |
5420 | |
5421 | Note that C<size> is the full size of the destination buffer and | |
6602b933 KW |
5422 | the result is guaranteed to be C<NUL>-terminated if there is room. Note that |
5423 | room for the C<NUL> should be included in C<size>. | |
f46a3253 | 5424 | |
6ade12da KW |
5425 | The return value is the total length that C<dst> would have if C<size> is |
5426 | sufficiently large. Thus it is the initial length of C<dst> plus the length of | |
5427 | C<src>. If C<size> is smaller than the return, the excess was not appended. | |
5428 | ||
f46a3253 KW |
5429 | =cut |
5430 | ||
0baa827e | 5431 | Description stolen from http://man.openbsd.org/strlcat.3 |
f46a3253 | 5432 | */ |
a6cc4119 SP |
5433 | #ifndef HAS_STRLCAT |
5434 | Size_t | |
5435 | Perl_my_strlcat(char *dst, const char *src, Size_t size) | |
5436 | { | |
5437 | Size_t used, length, copy; | |
5438 | ||
5439 | used = strlen(dst); | |
5440 | length = strlen(src); | |
5441 | if (size > 0 && used < size - 1) { | |
5442 | copy = (length >= size - used) ? size - used - 1 : length; | |
5443 | memcpy(dst + used, src, copy); | |
5444 | dst[used + copy] = '\0'; | |
5445 | } | |
5446 | return used + length; | |
5447 | } | |
5448 | #endif | |
5449 | ||
f46a3253 KW |
5450 | |
5451 | /* | |
5452 | =for apidoc my_strlcpy | |
5453 | ||
5454 | The C library C<strlcpy> if available, or a Perl implementation of it. | |
6602b933 | 5455 | This operates on C C<NUL>-terminated strings. |
f46a3253 KW |
5456 | |
5457 | C<my_strlcpy()> copies up to S<C<size - 1>> characters from the string C<src> | |
6602b933 | 5458 | to C<dst>, C<NUL>-terminating the result if C<size> is not 0. |
f46a3253 | 5459 | |
6ade12da KW |
5460 | The return value is the total length C<src> would be if the copy completely |
5461 | succeeded. If it is larger than C<size>, the excess was not copied. | |
5462 | ||
f46a3253 KW |
5463 | =cut |
5464 | ||
0baa827e | 5465 | Description stolen from http://man.openbsd.org/strlcpy.3 |
f46a3253 | 5466 | */ |
a6cc4119 SP |
5467 | #ifndef HAS_STRLCPY |
5468 | Size_t | |
5469 | Perl_my_strlcpy(char *dst, const char *src, Size_t size) | |
5470 | { | |
5471 | Size_t length, copy; | |
5472 | ||
5473 | length = strlen(src); | |
5474 | if (size > 0) { | |
5475 | copy = (length >= size) ? size - 1 : length; | |
5476 | memcpy(dst, src, copy); | |
5477 | dst[copy] = '\0'; | |
5478 | } | |
5479 | return length; | |
5480 | } | |
5481 | #endif | |
5482 | ||
aefb3fa0 DIM |
5483 | /* |
5484 | =for apidoc my_strnlen | |
5485 | ||
5486 | The C library C<strnlen> if available, or a Perl implementation of it. | |
5487 | ||
5488 | C<my_strnlen()> computes the length of the string, up to C<maxlen> | |
5489 | characters. It will will never attempt to address more than C<maxlen> | |
5490 | characters, making it suitable for use with strings that are not | |
5491 | guaranteed to be NUL-terminated. | |
5492 | ||
5493 | =cut | |
5494 | ||
5495 | Description stolen from http://man.openbsd.org/strnlen.3, | |
5496 | implementation stolen from PostgreSQL. | |
5497 | */ | |
5498 | #ifndef HAS_STRNLEN | |
5499 | Size_t | |
5500 | Perl_my_strnlen(const char *str, Size_t maxlen) | |
5501 | { | |
5502 | const char *p = str; | |
5503 | ||
5504 | PERL_ARGS_ASSERT_MY_STRNLEN; | |
5505 | ||
5506 | while(maxlen-- && *p) | |
5507 | p++; | |
5508 | ||
5509 | return p - str; | |
5510 | } | |
5511 | #endif | |
5512 | ||
17dd9954 JH |
5513 | #if defined(_MSC_VER) && (_MSC_VER >= 1300) && (_MSC_VER < 1400) && (WINVER < 0x0500) |
5514 | /* VC7 or 7.1, building with pre-VC7 runtime libraries. */ | |
5515 | long _ftol( double ); /* Defined by VC6 C libs. */ | |
5516 | long _ftol2( double dblSource ) { return _ftol( dblSource ); } | |
5517 | #endif | |
5518 | ||
a7999c08 FC |
5519 | PERL_STATIC_INLINE bool |
5520 | S_gv_has_usable_name(pTHX_ GV *gv) | |
5521 | { | |
5522 | GV **gvp; | |
5523 | return GvSTASH(gv) | |
5524 | && HvENAME(GvSTASH(gv)) | |
edf4dbd2 FC |
5525 | && (gvp = (GV **)hv_fetchhek( |
5526 | GvSTASH(gv), GvNAME_HEK(gv), 0 | |
a7999c08 FC |
5527 | )) |
5528 | && *gvp == gv; | |
5529 | } | |
5530 | ||
c51f309c NC |
5531 | void |
5532 | Perl_get_db_sub(pTHX_ SV **svp, CV *cv) | |
5533 | { | |
c51f309c | 5534 | SV * const dbsv = GvSVn(PL_DBsub); |
9a9b5ec9 | 5535 | const bool save_taint = TAINT_get; |
07004ebb | 5536 | |
107c452c FC |
5537 | /* When we are called from pp_goto (svp is null), |
5538 | * we do not care about using dbsv to call CV; | |
c51f309c NC |
5539 | * it's for informational purposes only. |
5540 | */ | |
5541 | ||
7918f24d NC |
5542 | PERL_ARGS_ASSERT_GET_DB_SUB; |
5543 | ||
284167a5 | 5544 | TAINT_set(FALSE); |
c51f309c NC |
5545 | save_item(dbsv); |
5546 | if (!PERLDB_SUB_NN) { | |
be1cc451 | 5547 | GV *gv = CvGV(cv); |
c51f309c | 5548 | |
e0a18850 | 5549 | if (!svp && !CvLEXICAL(cv)) { |
7d8b4ed3 FC |
5550 | gv_efullname3(dbsv, gv, NULL); |
5551 | } | |
e0a18850 | 5552 | else if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) || CvLEXICAL(cv) |
c51f309c | 5553 | || strEQ(GvNAME(gv), "END") |
a7999c08 FC |
5554 | || ( /* Could be imported, and old sub redefined. */ |
5555 | (GvCV(gv) != cv || !S_gv_has_usable_name(aTHX_ gv)) | |
5556 | && | |
159b6efe | 5557 | !( (SvTYPE(*svp) == SVt_PVGV) |
be1cc451 | 5558 | && (GvCV((const GV *)*svp) == cv) |
a7999c08 | 5559 | /* Use GV from the stack as a fallback. */ |
4aaab439 | 5560 | && S_gv_has_usable_name(aTHX_ gv = (GV *)*svp) |
be1cc451 FC |
5561 | ) |
5562 | ) | |
7d8b4ed3 | 5563 | ) { |
c51f309c | 5564 | /* GV is potentially non-unique, or contain different CV. */ |
daba3364 | 5565 | SV * const tmp = newRV(MUTABLE_SV(cv)); |
c51f309c NC |
5566 | sv_setsv(dbsv, tmp); |
5567 | SvREFCNT_dec(tmp); | |
5568 | } | |
5569 | else { | |
a7999c08 FC |
5570 | sv_sethek(dbsv, HvENAME_HEK(GvSTASH(gv))); |
5571 | sv_catpvs(dbsv, "::"); | |
f34d8cdd | 5572 | sv_cathek(dbsv, GvNAME_HEK(gv)); |
c51f309c NC |
5573 | } |
5574 | } | |
5575 | else { | |
5576 | const int type = SvTYPE(dbsv); | |
5577 | if (type < SVt_PVIV && type != SVt_IV) | |
5578 | sv_upgrade(dbsv, SVt_PVIV); | |
5579 | (void)SvIOK_on(dbsv); | |
5580 | SvIV_set(dbsv, PTR2IV(cv)); /* Do it the quickest way */ | |
5581 | } | |
90a04aed | 5582 | SvSETMAGIC(dbsv); |
07004ebb | 5583 | TAINT_IF(save_taint); |
9a9b5ec9 DM |
5584 | #ifdef NO_TAINT_SUPPORT |
5585 | PERL_UNUSED_VAR(save_taint); | |
5586 | #endif | |
c51f309c NC |
5587 | } |
5588 | ||
3497a01f | 5589 | int |
ddeaf645 | 5590 | Perl_my_dirfd(DIR * dir) { |
3497a01f SP |
5591 | |
5592 | /* Most dirfd implementations have problems when passed NULL. */ | |
5593 | if(!dir) | |
5594 | return -1; | |
5595 | #ifdef HAS_DIRFD | |
5596 | return dirfd(dir); | |
5597 | #elif defined(HAS_DIR_DD_FD) | |
5598 | return dir->dd_fd; | |
5599 | #else | |
ddeaf645 | 5600 | Perl_croak_nocontext(PL_no_func, "dirfd"); |
661d43c4 | 5601 | NOT_REACHED; /* NOTREACHED */ |
3497a01f SP |
5602 | return 0; |
5603 | #endif | |
5604 | } | |
5605 | ||
e48855bd TC |
5606 | #ifndef HAS_MKSTEMP |
5607 | ||
5608 | #define TEMP_FILE_CH "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvxyz0123456789" | |
5609 | #define TEMP_FILE_CH_COUNT (sizeof(TEMP_FILE_CH)-1) | |
5610 | ||
5611 | int | |
5612 | Perl_my_mkstemp(char *templte) { | |
5613 | dTHX; | |
5614 | STRLEN len = strlen(templte); | |
5615 | int fd; | |
5616 | int attempts = 0; | |
5617 | ||
5618 | PERL_ARGS_ASSERT_MY_MKSTEMP; | |
5619 | ||
5620 | if (len < 6 || | |
5621 | templte[len-1] != 'X' || templte[len-2] != 'X' || templte[len-3] != 'X' || | |
5622 | templte[len-4] != 'X' || templte[len-5] != 'X' || templte[len-6] != 'X') { | |
5623 | errno = EINVAL; | |
5624 | return -1; | |
5625 | } | |
5626 | ||
5627 | do { | |
5628 | int i; | |
5629 | for (i = 1; i <= 6; ++i) { | |
5630 | templte[len-i] = TEMP_FILE_CH[(int)(Perl_internal_drand48() * TEMP_FILE_CH_COUNT)]; | |
5631 | } | |
5632 | fd = PerlLIO_open3(templte, O_RDWR | O_CREAT | O_EXCL, 0600); | |
5633 | } while (fd == -1 && errno == EEXIST && ++attempts <= 100); | |
5634 | ||
5635 | return fd; | |
5636 | } | |
5637 | ||
5638 | #endif | |
5639 | ||
f7e71195 AB |
5640 | REGEXP * |
5641 | Perl_get_re_arg(pTHX_ SV *sv) { | |
f7e71195 AB |
5642 | |
5643 | if (sv) { | |
5644 | if (SvMAGICAL(sv)) | |
5645 | mg_get(sv); | |
df052ff8 BM |
5646 | if (SvROK(sv)) |
5647 | sv = MUTABLE_SV(SvRV(sv)); | |
5648 | if (SvTYPE(sv) == SVt_REGEXP) | |
5649 | return (REGEXP*) sv; | |
f7e71195 AB |
5650 | } |
5651 | ||
5652 | return NULL; | |
5653 | } | |
5654 | ||
ce582cee | 5655 | /* |
3be8f094 TC |
5656 | * This code is derived from drand48() implementation from FreeBSD, |
5657 | * found in lib/libc/gen/_rand48.c. | |
5658 | * | |
5659 | * The U64 implementation is original, based on the POSIX | |
5660 | * specification for drand48(). | |
5661 | */ | |
5662 | ||
5663 | /* | |
5664 | * Copyright (c) 1993 Martin Birgmeier | |
5665 | * All rights reserved. | |
5666 | * | |
5667 | * You may redistribute unmodified or modified versions of this source | |
5668 | * code provided that the above copyright notice and this and the | |
5669 | * following conditions are retained. | |
5670 | * | |
5671 | * This software is provided ``as is'', and comes with no warranties | |
5672 | * of any kind. I shall in no event be liable for anything that happens | |
5673 | * to anyone/anything when using this software. | |
5674 | */ | |
5675 | ||
5676 | #define FREEBSD_DRAND48_SEED_0 (0x330e) | |
5677 | ||
5678 | #ifdef PERL_DRAND48_QUAD | |
5679 | ||
7ace1b59 | 5680 | #define DRAND48_MULT U64_CONST(0x5deece66d) |
3be8f094 | 5681 | #define DRAND48_ADD 0xb |
7ace1b59 | 5682 | #define DRAND48_MASK U64_CONST(0xffffffffffff) |
3be8f094 TC |
5683 | |
5684 | #else | |
5685 | ||
5686 | #define FREEBSD_DRAND48_SEED_1 (0xabcd) | |
5687 | #define FREEBSD_DRAND48_SEED_2 (0x1234) | |
5688 | #define FREEBSD_DRAND48_MULT_0 (0xe66d) | |
5689 | #define FREEBSD_DRAND48_MULT_1 (0xdeec) | |
5690 | #define FREEBSD_DRAND48_MULT_2 (0x0005) | |
5691 | #define FREEBSD_DRAND48_ADD (0x000b) | |
5692 | ||
5693 | const unsigned short _rand48_mult[3] = { | |
5694 | FREEBSD_DRAND48_MULT_0, | |
5695 | FREEBSD_DRAND48_MULT_1, | |
5696 | FREEBSD_DRAND48_MULT_2 | |
5697 | }; | |
5698 | const unsigned short _rand48_add = FREEBSD_DRAND48_ADD; | |
5699 | ||
5700 | #endif | |
5701 | ||
5702 | void | |
5703 | Perl_drand48_init_r(perl_drand48_t *random_state, U32 seed) | |
5704 | { | |
5705 | PERL_ARGS_ASSERT_DRAND48_INIT_R; | |
5706 | ||
5707 | #ifdef PERL_DRAND48_QUAD | |
702c92eb | 5708 | *random_state = FREEBSD_DRAND48_SEED_0 + ((U64)seed << 16); |
3be8f094 TC |
5709 | #else |
5710 | random_state->seed[0] = FREEBSD_DRAND48_SEED_0; | |
5711 | random_state->seed[1] = (U16) seed; | |
5712 | random_state->seed[2] = (U16) (seed >> 16); | |
5713 | #endif | |
5714 | } | |
5715 | ||
5716 | double | |
5717 | Perl_drand48_r(perl_drand48_t *random_state) | |
5718 | { | |
5719 | PERL_ARGS_ASSERT_DRAND48_R; | |
5720 | ||
5721 | #ifdef PERL_DRAND48_QUAD | |
5722 | *random_state = (*random_state * DRAND48_MULT + DRAND48_ADD) | |
5723 | & DRAND48_MASK; | |
5724 | ||
0f246720 | 5725 | return ldexp((double)*random_state, -48); |
3be8f094 | 5726 | #else |
63835f79 | 5727 | { |
3be8f094 TC |
5728 | U32 accu; |
5729 | U16 temp[2]; | |
5730 | ||
5731 | accu = (U32) _rand48_mult[0] * (U32) random_state->seed[0] | |
5732 | + (U32) _rand48_add; | |
5733 | temp[0] = (U16) accu; /* lower 16 bits */ | |
5734 | accu >>= sizeof(U16) * 8; | |
5735 | accu += (U32) _rand48_mult[0] * (U32) random_state->seed[1] | |
5736 | + (U32) _rand48_mult[1] * (U32) random_state->seed[0]; | |
5737 | temp[1] = (U16) accu; /* middle 16 bits */ | |
5738 | accu >>= sizeof(U16) * 8; | |
5739 | accu += _rand48_mult[0] * random_state->seed[2] | |
5740 | + _rand48_mult[1] * random_state->seed[1] | |
5741 | + _rand48_mult[2] * random_state->seed[0]; | |
5742 | random_state->seed[0] = temp[0]; | |
5743 | random_state->seed[1] = temp[1]; | |
5744 | random_state->seed[2] = (U16) accu; | |
5745 | ||
5746 | return ldexp((double) random_state->seed[0], -48) + | |
5747 | ldexp((double) random_state->seed[1], -32) + | |
5748 | ldexp((double) random_state->seed[2], -16); | |
63835f79 | 5749 | } |
3be8f094 TC |
5750 | #endif |
5751 | } | |
2c6ee1a7 | 5752 | |
470dd224 JH |
5753 | #ifdef USE_C_BACKTRACE |
5754 | ||
5755 | /* Possibly move all this USE_C_BACKTRACE code into a new file. */ | |
5756 | ||
5757 | #ifdef USE_BFD | |
5758 | ||
5759 | typedef struct { | |
0762e42f | 5760 | /* abfd is the BFD handle. */ |
470dd224 | 5761 | bfd* abfd; |
0762e42f | 5762 | /* bfd_syms is the BFD symbol table. */ |
470dd224 | 5763 | asymbol** bfd_syms; |
0762e42f | 5764 | /* bfd_text is handle to the the ".text" section of the object file. */ |
470dd224 JH |
5765 | asection* bfd_text; |
5766 | /* Since opening the executable and scanning its symbols is quite | |
5767 | * heavy operation, we remember the filename we used the last time, | |
5768 | * and do the opening and scanning only if the filename changes. | |
5769 | * This removes most (but not all) open+scan cycles. */ | |
5770 | const char* fname_prev; | |
5771 | } bfd_context; | |
5772 | ||
5773 | /* Given a dl_info, update the BFD context if necessary. */ | |
5774 | static void bfd_update(bfd_context* ctx, Dl_info* dl_info) | |
5775 | { | |
5776 | /* BFD open and scan only if the filename changed. */ | |
5777 | if (ctx->fname_prev == NULL || | |
5778 | strNE(dl_info->dli_fname, ctx->fname_prev)) { | |
a1684041 JH |
5779 | if (ctx->abfd) { |
5780 | bfd_close(ctx->abfd); | |
5781 | } | |
470dd224 JH |
5782 | ctx->abfd = bfd_openr(dl_info->dli_fname, 0); |
5783 | if (ctx->abfd) { | |
5784 | if (bfd_check_format(ctx->abfd, bfd_object)) { | |
5785 | IV symbol_size = bfd_get_symtab_upper_bound(ctx->abfd); | |
5786 | if (symbol_size > 0) { | |
5787 | Safefree(ctx->bfd_syms); | |
5788 | Newx(ctx->bfd_syms, symbol_size, asymbol*); | |
5789 | ctx->bfd_text = | |
5790 | bfd_get_section_by_name(ctx->abfd, ".text"); | |
5791 | } | |
5792 | else | |
5793 | ctx->abfd = NULL; | |
5794 | } | |
5795 | else | |
5796 | ctx->abfd = NULL; | |
5797 | } | |
5798 | ctx->fname_prev = dl_info->dli_fname; | |
5799 | } | |
5800 | } | |
5801 | ||
5802 | /* Given a raw frame, try to symbolize it and store | |
5803 | * symbol information (source file, line number) away. */ | |
5804 | static void bfd_symbolize(bfd_context* ctx, | |
5805 | void* raw_frame, | |
5806 | char** symbol_name, | |
5807 | STRLEN* symbol_name_size, | |
5808 | char** source_name, | |
5809 | STRLEN* source_name_size, | |
5810 | STRLEN* source_line) | |
5811 | { | |
5812 | *symbol_name = NULL; | |
5813 | *symbol_name_size = 0; | |
5814 | if (ctx->abfd) { | |
5815 | IV offset = PTR2IV(raw_frame) - PTR2IV(ctx->bfd_text->vma); | |
5816 | if (offset > 0 && | |
5817 | bfd_canonicalize_symtab(ctx->abfd, ctx->bfd_syms) > 0) { | |
5818 | const char *file; | |
5819 | const char *func; | |
5820 | unsigned int line = 0; | |
5821 | if (bfd_find_nearest_line(ctx->abfd, ctx->bfd_text, | |
5822 | ctx->bfd_syms, offset, | |
5823 | &file, &func, &line) && | |
5824 | file && func && line > 0) { | |
5825 | /* Size and copy the source file, use only | |
5826 | * the basename of the source file. | |
5827 | * | |
5828 | * NOTE: the basenames are fine for the | |
5829 | * Perl source files, but may not always | |
5830 | * be the best idea for XS files. */ | |
5831 | const char *p, *b = NULL; | |
5832 | /* Look for the last slash. */ | |
5833 | for (p = file; *p; p++) { | |
5834 | if (*p == '/') | |
5835 | b = p + 1; | |
5836 | } | |
5837 | if (b == NULL || *b == 0) { | |
5838 | b = file; | |
5839 | } | |
5840 | *source_name_size = p - b + 1; | |
5841 | Newx(*source_name, *source_name_size + 1, char); | |
5842 | Copy(b, *source_name, *source_name_size + 1, char); | |
5843 | ||
5844 | *symbol_name_size = strlen(func); | |
5845 | Newx(*symbol_name, *symbol_name_size + 1, char); | |
5846 | Copy(func, *symbol_name, *symbol_name_size + 1, char); | |
5847 | ||
5848 | *source_line = line; | |
5849 | } | |
5850 | } | |
5851 | } | |
5852 | } | |
5853 | ||
5854 | #endif /* #ifdef USE_BFD */ | |
5855 | ||
5856 | #ifdef PERL_DARWIN | |
5857 | ||
5858 | /* OS X has no public API for for 'symbolicating' (Apple official term) | |
5859 | * stack addresses to {function_name, source_file, line_number}. | |
5860 | * Good news: there is command line utility atos(1) which does that. | |
5861 | * Bad news 1: it's a command line utility. | |
5862 | * Bad news 2: one needs to have the Developer Tools installed. | |
5863 | * Bad news 3: in newer releases it needs to be run as 'xcrun atos'. | |
5864 | * | |
5865 | * To recap: we need to open a pipe for reading for a utility which | |
5866 | * might not exist, or exists in different locations, and then parse | |
5867 | * the output. And since this is all for a low-level API, we cannot | |
5868 | * use high-level stuff. Thanks, Apple. */ | |
5869 | ||
5870 | typedef struct { | |
0762e42f JH |
5871 | /* tool is set to the absolute pathname of the tool to use: |
5872 | * xcrun or atos. */ | |
470dd224 | 5873 | const char* tool; |
0762e42f JH |
5874 | /* format is set to a printf format string used for building |
5875 | * the external command to run. */ | |
470dd224 | 5876 | const char* format; |
0762e42f JH |
5877 | /* unavail is set if e.g. xcrun cannot be found, or something |
5878 | * else happens that makes getting the backtrace dubious. Note, | |
5879 | * however, that the context isn't persistent, the next call to | |
5880 | * get_c_backtrace() will start from scratch. */ | |
470dd224 | 5881 | bool unavail; |
0762e42f | 5882 | /* fname is the current object file name. */ |
470dd224 | 5883 | const char* fname; |
0762e42f | 5884 | /* object_base_addr is the base address of the shared object. */ |
470dd224 JH |
5885 | void* object_base_addr; |
5886 | } atos_context; | |
5887 | ||
5888 | /* Given |dl_info|, updates the context. If the context has been | |
5889 | * marked unavailable, return immediately. If not but the tool has | |
5890 | * not been set, set it to either "xcrun atos" or "atos" (also set the | |
5891 | * format to use for creating commands for piping), or if neither is | |
5892 | * unavailable (one needs the Developer Tools installed), mark the context | |
5893 | * an unavailable. Finally, update the filename (object name), | |
5894 | * and its base address. */ | |
5895 | ||
5896 | static void atos_update(atos_context* ctx, | |
5897 | Dl_info* dl_info) | |
5898 | { | |
5899 | if (ctx->unavail) | |
5900 | return; | |
5901 | if (ctx->tool == NULL) { | |
5902 | const char* tools[] = { | |
5903 | "/usr/bin/xcrun", | |
5904 | "/usr/bin/atos" | |
5905 | }; | |
5906 | const char* formats[] = { | |
5907 | "/usr/bin/xcrun atos -o '%s' -l %08x %08x 2>&1", | |
5908 | "/usr/bin/atos -d -o '%s' -l %08x %08x 2>&1" | |
5909 | }; | |
5910 | struct stat st; | |
5911 | UV i; | |
5912 | for (i = 0; i < C_ARRAY_LENGTH(tools); i++) { | |
5913 | if (stat(tools[i], &st) == 0 && S_ISREG(st.st_mode)) { | |
5914 | ctx->tool = tools[i]; | |
5915 | ctx->format = formats[i]; | |
5916 | break; | |
5917 | } | |
5918 | } | |
5919 | if (ctx->tool == NULL) { | |
5920 | ctx->unavail = TRUE; | |
5921 | return; | |
5922 | } | |
5923 | } | |
5924 | if (ctx->fname == NULL || | |
5925 | strNE(dl_info->dli_fname, ctx->fname)) { | |
5926 | ctx->fname = dl_info->dli_fname; | |
5927 | ctx->object_base_addr = dl_info->dli_fbase; | |
5928 | } | |
5929 | } | |
5930 | ||
5931 | /* Given an output buffer end |p| and its |start|, matches | |
5932 | * for the atos output, extracting the source code location | |
96e440d2 | 5933 | * and returning non-NULL if possible, returning NULL otherwise. */ |
470dd224 JH |
5934 | static const char* atos_parse(const char* p, |
5935 | const char* start, | |
5936 | STRLEN* source_name_size, | |
5937 | STRLEN* source_line) { | |
96e440d2 | 5938 | /* atos() output is something like: |
470dd224 JH |
5939 | * perl_parse (in miniperl) (perl.c:2314)\n\n". |
5940 | * We cannot use Perl regular expressions, because we need to | |
5941 | * stay low-level. Therefore here we have a rolled-out version | |
5942 | * of a state machine which matches _backwards_from_the_end_ and | |
5943 | * if there's a success, returns the starts of the filename, | |
5944 | * also setting the filename size and the source line number. | |
5945 | * The matched regular expression is roughly "\(.*:\d+\)\s*$" */ | |
5946 | const char* source_number_start; | |
5947 | const char* source_name_end; | |
96e440d2 JH |
5948 | const char* source_line_end; |
5949 | const char* close_paren; | |
22ff3130 HS |
5950 | UV uv; |
5951 | ||
470dd224 | 5952 | /* Skip trailing whitespace. */ |
a248e8c9 | 5953 | while (p > start && isSPACE(*p)) p--; |
470dd224 JH |
5954 | /* Now we should be at the close paren. */ |
5955 | if (p == start || *p != ')') | |
5956 | return NULL; | |
96e440d2 | 5957 | close_paren = p; |
470dd224 JH |
5958 | p--; |
5959 | /* Now we should be in the line number. */ | |
a248e8c9 | 5960 | if (p == start || !isDIGIT(*p)) |
470dd224 JH |
5961 | return NULL; |
5962 | /* Skip over the digits. */ | |
a248e8c9 | 5963 | while (p > start && isDIGIT(*p)) |
470dd224 JH |
5964 | p--; |
5965 | /* Now we should be at the colon. */ | |
5966 | if (p == start || *p != ':') | |
5967 | return NULL; | |
5968 | source_number_start = p + 1; | |
5969 | source_name_end = p; /* Just beyond the end. */ | |
5970 | p--; | |
5971 | /* Look for the open paren. */ | |
5972 | while (p > start && *p != '(') | |
5973 | p--; | |
5974 | if (p == start) | |
5975 | return NULL; | |
5976 | p++; | |
5977 | *source_name_size = source_name_end - p; | |
22ff3130 HS |
5978 | if (grok_atoUV(source_number_start, &uv, &source_line_end) |
5979 | && source_line_end == close_paren | |
99315af8 | 5980 | && uv <= PERL_INT_MAX |
22ff3130 HS |
5981 | ) { |
5982 | *source_line = (STRLEN)uv; | |
5983 | return p; | |
5984 | } | |
5985 | return NULL; | |
470dd224 JH |
5986 | } |
5987 | ||
5988 | /* Given a raw frame, read a pipe from the symbolicator (that's the | |
5989 | * technical term) atos, reads the result, and parses the source code | |
5990 | * location. We must stay low-level, so we use snprintf(), pipe(), | |
5991 | * and fread(), and then also parse the output ourselves. */ | |
5992 | static void atos_symbolize(atos_context* ctx, | |
5993 | void* raw_frame, | |
5994 | char** source_name, | |
5995 | STRLEN* source_name_size, | |
5996 | STRLEN* source_line) | |
5997 | { | |
5998 | char cmd[1024]; | |
5999 | const char* p; | |
6000 | Size_t cnt; | |
6001 | ||
6002 | if (ctx->unavail) | |
6003 | return; | |
6004 | /* Simple security measure: if there's any funny business with | |
6005 | * the object name (used as "-o '%s'" ), leave since at least | |
6006 | * partially the user controls it. */ | |
6007 | for (p = ctx->fname; *p; p++) { | |
a248e8c9 | 6008 | if (*p == '\'' || isCNTRL(*p)) { |
470dd224 JH |
6009 | ctx->unavail = TRUE; |
6010 | return; | |
6011 | } | |
6012 | } | |
6013 | cnt = snprintf(cmd, sizeof(cmd), ctx->format, | |
6014 | ctx->fname, ctx->object_base_addr, raw_frame); | |
6015 | if (cnt < sizeof(cmd)) { | |
6016 | /* Undo nostdio.h #defines that disable stdio. | |
6017 | * This is somewhat naughty, but is used elsewhere | |
6018 | * in the core, and affects only OS X. */ | |
6019 | #undef FILE | |
6020 | #undef popen | |
6021 | #undef fread | |
6022 | #undef pclose | |
6023 | FILE* fp = popen(cmd, "r"); | |
6024 | /* At the moment we open a new pipe for each stack frame. | |
6025 | * This is naturally somewhat slow, but hopefully generating | |
6026 | * stack traces is never going to in a performance critical path. | |
6027 | * | |
6028 | * We could play tricks with atos by batching the stack | |
6029 | * addresses to be resolved: atos can either take multiple | |
6030 | * addresses from the command line, or read addresses from | |
470dd224 JH |
6031 | * a file (though the mess of creating temporary files would |
6032 | * probably negate much of any possible speedup). | |
6033 | * | |
6034 | * Normally there are only two objects present in the backtrace: | |
6035 | * perl itself, and the libdyld.dylib. (Note that the object | |
6036 | * filenames contain the full pathname, so perl may not always | |
6037 | * be in the same place.) Whenever the object in the | |
6038 | * backtrace changes, the base address also changes. | |
6039 | * | |
6040 | * The problem with batching the addresses, though, would be | |
6041 | * matching the results with the addresses: the parsing of | |
6042 | * the results is already painful enough with a single address. */ | |
6043 | if (fp) { | |
6044 | char out[1024]; | |
6045 | UV cnt = fread(out, 1, sizeof(out), fp); | |
6046 | if (cnt < sizeof(out)) { | |
70ead873 | 6047 | const char* p = atos_parse(out + cnt - 1, out, |
470dd224 JH |
6048 | source_name_size, |
6049 | source_line); | |
6050 | if (p) { | |
6051 | Newx(*source_name, | |
70ead873 | 6052 | *source_name_size, char); |
470dd224 | 6053 | Copy(p, *source_name, |
70ead873 | 6054 | *source_name_size, char); |
470dd224 JH |
6055 | } |
6056 | } | |
6057 | pclose(fp); | |
6058 | } | |
6059 | } | |
6060 | } | |
6061 | ||
6062 | #endif /* #ifdef PERL_DARWIN */ | |
6063 | ||
6064 | /* | |
6065 | =for apidoc get_c_backtrace | |
6066 | ||
6067 | Collects the backtrace (aka "stacktrace") into a single linear | |
796b6530 | 6068 | malloced buffer, which the caller B<must> C<Perl_free_c_backtrace()>. |
470dd224 | 6069 | |
796b6530 KW |
6070 | Scans the frames back by S<C<depth + skip>>, then drops the C<skip> innermost, |
6071 | returning at most C<depth> frames. | |
470dd224 JH |
6072 | |
6073 | =cut | |
6074 | */ | |
6075 | ||
6076 | Perl_c_backtrace* | |
6077 | Perl_get_c_backtrace(pTHX_ int depth, int skip) | |
6078 | { | |
6079 | /* Note that here we must stay as low-level as possible: Newx(), | |
6080 | * Copy(), Safefree(); since we may be called from anywhere, | |
6081 | * so we should avoid higher level constructs like SVs or AVs. | |
6082 | * | |
6083 | * Since we are using safesysmalloc() via Newx(), don't try | |
6084 | * getting backtrace() there, unless you like deep recursion. */ | |
6085 | ||
6086 | /* Currently only implemented with backtrace() and dladdr(), | |
6087 | * for other platforms NULL is returned. */ | |
6088 | ||
6089 | #if defined(HAS_BACKTRACE) && defined(HAS_DLADDR) | |
6090 | /* backtrace() is available via <execinfo.h> in glibc and in most | |
6091 | * modern BSDs; dladdr() is available via <dlfcn.h>. */ | |
6092 | ||
6093 | /* We try fetching this many frames total, but then discard | |
6094 | * the |skip| first ones. For the remaining ones we will try | |
6095 | * retrieving more information with dladdr(). */ | |
6096 | int try_depth = skip + depth; | |
6097 | ||
6098 | /* The addresses (program counters) returned by backtrace(). */ | |
6099 | void** raw_frames; | |
6100 | ||
6101 | /* Retrieved with dladdr() from the addresses returned by backtrace(). */ | |
6102 | Dl_info* dl_infos; | |
6103 | ||
6104 | /* Sizes _including_ the terminating \0 of the object name | |
6105 | * and symbol name strings. */ | |
6106 | STRLEN* object_name_sizes; | |
6107 | STRLEN* symbol_name_sizes; | |
6108 | ||
6109 | #ifdef USE_BFD | |
6110 | /* The symbol names comes either from dli_sname, | |
6111 | * or if using BFD, they can come from BFD. */ | |
6112 | char** symbol_names; | |
6113 | #endif | |
6114 | ||
6115 | /* The source code location information. Dug out with e.g. BFD. */ | |
6116 | char** source_names; | |
6117 | STRLEN* source_name_sizes; | |
6118 | STRLEN* source_lines; | |
6119 | ||
6120 | Perl_c_backtrace* bt = NULL; /* This is what will be returned. */ | |
6121 | int got_depth; /* How many frames were returned from backtrace(). */ | |
6122 | UV frame_count = 0; /* How many frames we return. */ | |
6123 | UV total_bytes = 0; /* The size of the whole returned backtrace. */ | |
6124 | ||
6125 | #ifdef USE_BFD | |
6126 | bfd_context bfd_ctx; | |
6127 | #endif | |
6128 | #ifdef PERL_DARWIN | |
6129 | atos_context atos_ctx; | |
6130 | #endif | |
6131 | ||
6132 | /* Here are probably possibilities for optimizing. We could for | |
6133 | * example have a struct that contains most of these and then | |
6134 | * allocate |try_depth| of them, saving a bunch of malloc calls. | |
6135 | * Note, however, that |frames| could not be part of that struct | |
6136 | * because backtrace() will want an array of just them. Also be | |
6137 | * careful about the name strings. */ | |
6138 | Newx(raw_frames, try_depth, void*); | |
6139 | Newx(dl_infos, try_depth, Dl_info); | |
6140 | Newx(object_name_sizes, try_depth, STRLEN); | |
6141 | Newx(symbol_name_sizes, try_depth, STRLEN); | |
6142 | Newx(source_names, try_depth, char*); | |
6143 | Newx(source_name_sizes, try_depth, STRLEN); | |
6144 | Newx(source_lines, try_depth, STRLEN); | |
6145 | #ifdef USE_BFD | |
6146 | Newx(symbol_names, try_depth, char*); | |
6147 | #endif | |
6148 | ||
6149 | /* Get the raw frames. */ | |
6150 | got_depth = (int)backtrace(raw_frames, try_depth); | |
6151 | ||
6152 | /* We use dladdr() instead of backtrace_symbols() because we want | |
6153 | * the full details instead of opaque strings. This is useful for | |
6154 | * two reasons: () the details are needed for further symbolic | |
0762e42f JH |
6155 | * digging, for example in OS X (2) by having the details we fully |
6156 | * control the output, which in turn is useful when more platforms | |
6157 | * are added: we can keep out output "portable". */ | |
470dd224 JH |
6158 | |
6159 | /* We want a single linear allocation, which can then be freed | |
6160 | * with a single swoop. We will do the usual trick of first | |
6161 | * walking over the structure and seeing how much we need to | |
6162 | * allocate, then allocating, and then walking over the structure | |
6163 | * the second time and populating it. */ | |
6164 | ||
6165 | /* First we must compute the total size of the buffer. */ | |
6166 | total_bytes = sizeof(Perl_c_backtrace_header); | |
6167 | if (got_depth > skip) { | |
6168 | int i; | |
6169 | #ifdef USE_BFD | |
6170 | bfd_init(); /* Is this safe to call multiple times? */ | |
6171 | Zero(&bfd_ctx, 1, bfd_context); | |
6172 | #endif | |
6173 | #ifdef PERL_DARWIN | |
6174 | Zero(&atos_ctx, 1, atos_context); | |
6175 | #endif | |
6176 | for (i = skip; i < try_depth; i++) { | |
6177 | Dl_info* dl_info = &dl_infos[i]; | |
6178 | ||
4d00a319 JH |
6179 | object_name_sizes[i] = 0; |
6180 | source_names[i] = NULL; | |
6181 | source_name_sizes[i] = 0; | |
6182 | source_lines[i] = 0; | |
6183 | ||
470dd224 JH |
6184 | /* Yes, zero from dladdr() is failure. */ |
6185 | if (dladdr(raw_frames[i], dl_info)) { | |
70ead873 VT |
6186 | total_bytes += sizeof(Perl_c_backtrace_frame); |
6187 | ||
470dd224 JH |
6188 | object_name_sizes[i] = |
6189 | dl_info->dli_fname ? strlen(dl_info->dli_fname) : 0; | |
6190 | symbol_name_sizes[i] = | |
6191 | dl_info->dli_sname ? strlen(dl_info->dli_sname) : 0; | |
6192 | #ifdef USE_BFD | |
6193 | bfd_update(&bfd_ctx, dl_info); | |
6194 | bfd_symbolize(&bfd_ctx, raw_frames[i], | |
6195 | &symbol_names[i], | |
6196 | &symbol_name_sizes[i], | |
6197 | &source_names[i], | |
6198 | &source_name_sizes[i], | |
6199 | &source_lines[i]); | |
6200 | #endif | |
6201 | #if PERL_DARWIN | |
6202 | atos_update(&atos_ctx, dl_info); | |
6203 | atos_symbolize(&atos_ctx, | |
6204 | raw_frames[i], | |
6205 | &source_names[i], | |
6206 | &source_name_sizes[i], | |
6207 | &source_lines[i]); | |
6208 | #endif | |
6209 | ||
6210 | /* Plus ones for the terminating \0. */ | |
6211 | total_bytes += object_name_sizes[i] + 1; | |
6212 | total_bytes += symbol_name_sizes[i] + 1; | |
6213 | total_bytes += source_name_sizes[i] + 1; | |
6214 | ||
6215 | frame_count++; | |
6216 | } else { | |
6217 | break; | |
6218 | } | |
6219 | } | |
6220 | #ifdef USE_BFD | |
6221 | Safefree(bfd_ctx.bfd_syms); | |
6222 | #endif | |
6223 | } | |
6224 | ||
6225 | /* Now we can allocate and populate the result buffer. */ | |
6226 | Newxc(bt, total_bytes, char, Perl_c_backtrace); | |
6227 | Zero(bt, total_bytes, char); | |
6228 | bt->header.frame_count = frame_count; | |
6229 | bt->header.total_bytes = total_bytes; | |
6230 | if (frame_count > 0) { | |
6231 | Perl_c_backtrace_frame* frame = bt->frame_info; | |
6232 | char* name_base = (char *)(frame + frame_count); | |
6233 | char* name_curr = name_base; /* Outputting the name strings here. */ | |
6234 | UV i; | |
6235 | for (i = skip; i < skip + frame_count; i++) { | |
6236 | Dl_info* dl_info = &dl_infos[i]; | |
6237 | ||
6238 | frame->addr = raw_frames[i]; | |
6239 | frame->object_base_addr = dl_info->dli_fbase; | |
6240 | frame->symbol_addr = dl_info->dli_saddr; | |
6241 | ||
6242 | /* Copies a string, including the \0, and advances the name_curr. | |
6243 | * Also copies the start and the size to the frame. */ | |
6244 | #define PERL_C_BACKTRACE_STRCPY(frame, doffset, src, dsize, size) \ | |
6245 | if (size && src) \ | |
6246 | Copy(src, name_curr, size, char); \ | |
6247 | frame->doffset = name_curr - (char*)bt; \ | |
6248 | frame->dsize = size; \ | |
6249 | name_curr += size; \ | |
6250 | *name_curr++ = 0; | |
6251 | ||
6252 | PERL_C_BACKTRACE_STRCPY(frame, object_name_offset, | |
6253 | dl_info->dli_fname, | |
6254 | object_name_size, object_name_sizes[i]); | |
6255 | ||
6256 | #ifdef USE_BFD | |
6257 | PERL_C_BACKTRACE_STRCPY(frame, symbol_name_offset, | |
6258 | symbol_names[i], | |
6259 | symbol_name_size, symbol_name_sizes[i]); | |
6260 | Safefree(symbol_names[i]); | |
6261 | #else | |
6262 | PERL_C_BACKTRACE_STRCPY(frame, symbol_name_offset, | |
6263 | dl_info->dli_sname, | |
6264 | symbol_name_size, symbol_name_sizes[i]); | |
6265 | #endif | |
6266 | ||
6267 | PERL_C_BACKTRACE_STRCPY(frame, source_name_offset, | |
6268 | source_names[i], | |
6269 | source_name_size, source_name_sizes[i]); | |
6270 | Safefree(source_names[i]); | |
6271 | ||
6272 | #undef PERL_C_BACKTRACE_STRCPY | |
6273 | ||
6274 | frame->source_line_number = source_lines[i]; | |
6275 | ||
6276 | frame++; | |
6277 | } | |
6278 | assert(total_bytes == | |
6279 | (UV)(sizeof(Perl_c_backtrace_header) + | |
6280 | frame_count * sizeof(Perl_c_backtrace_frame) + | |
6281 | name_curr - name_base)); | |
6282 | } | |
6283 | #ifdef USE_BFD | |
6284 | Safefree(symbol_names); | |
a1684041 JH |
6285 | if (bfd_ctx.abfd) { |
6286 | bfd_close(bfd_ctx.abfd); | |
6287 | } | |
470dd224 JH |
6288 | #endif |
6289 | Safefree(source_lines); | |
6290 | Safefree(source_name_sizes); | |
6291 | Safefree(source_names); | |
6292 | Safefree(symbol_name_sizes); | |
6293 | Safefree(object_name_sizes); | |
6294 | /* Assuming the strings returned by dladdr() are pointers | |
6295 | * to read-only static memory (the object file), so that | |
6296 | * they do not need freeing (and cannot be). */ | |
6297 | Safefree(dl_infos); | |
6298 | Safefree(raw_frames); | |
6299 | return bt; | |
6300 | #else | |
6301 | PERL_UNUSED_ARGV(depth); | |
6302 | PERL_UNUSED_ARGV(skip); | |
6303 | return NULL; | |
6304 | #endif | |
6305 | } | |
6306 | ||
6307 | /* | |
6308 | =for apidoc free_c_backtrace | |
6309 | ||
6310 | Deallocates a backtrace received from get_c_bracktrace. | |
6311 | ||
6312 | =cut | |
6313 | */ | |
6314 | ||
6315 | /* | |
6316 | =for apidoc get_c_backtrace_dump | |
6317 | ||
796b6530 KW |
6318 | Returns a SV containing a dump of C<depth> frames of the call stack, skipping |
6319 | the C<skip> innermost ones. C<depth> of 20 is usually enough. | |
470dd224 JH |
6320 | |
6321 | The appended output looks like: | |
6322 | ||
6323 | ... | |
6324 | 1 10e004812:0082 Perl_croak util.c:1716 /usr/bin/perl | |
6325 | 2 10df8d6d2:1d72 perl_parse perl.c:3975 /usr/bin/perl | |
6326 | ... | |
6327 | ||
6328 | The fields are tab-separated. The first column is the depth (zero | |
6329 | being the innermost non-skipped frame). In the hex:offset, the hex is | |
796b6530 KW |
6330 | where the program counter was in C<S_parse_body>, and the :offset (might |
6331 | be missing) tells how much inside the C<S_parse_body> the program counter was. | |
470dd224 | 6332 | |
796b6530 | 6333 | The C<util.c:1716> is the source code file and line number. |
470dd224 | 6334 | |
75af9d73 | 6335 | The F</usr/bin/perl> is obvious (hopefully). |
470dd224 JH |
6336 | |
6337 | Unknowns are C<"-">. Unknowns can happen unfortunately quite easily: | |
6338 | if the platform doesn't support retrieving the information; | |
6339 | if the binary is missing the debug information; | |
6340 | if the optimizer has transformed the code by for example inlining. | |
6341 | ||
6342 | =cut | |
6343 | */ | |
6344 | ||
6345 | SV* | |
6346 | Perl_get_c_backtrace_dump(pTHX_ int depth, int skip) | |
6347 | { | |
6348 | Perl_c_backtrace* bt; | |
6349 | ||
6350 | bt = get_c_backtrace(depth, skip + 1 /* Hide ourselves. */); | |
6351 | if (bt) { | |
6352 | Perl_c_backtrace_frame* frame; | |
6353 | SV* dsv = newSVpvs(""); | |
6354 | UV i; | |
6355 | for (i = 0, frame = bt->frame_info; | |
6356 | i < bt->header.frame_count; i++, frame++) { | |
6357 | Perl_sv_catpvf(aTHX_ dsv, "%d", (int)i); | |
6358 | Perl_sv_catpvf(aTHX_ dsv, "\t%p", frame->addr ? frame->addr : "-"); | |
6359 | /* Symbol (function) names might disappear without debug info. | |
6360 | * | |
6361 | * The source code location might disappear in case of the | |
6362 | * optimizer inlining or otherwise rearranging the code. */ | |
6363 | if (frame->symbol_addr) { | |
6364 | Perl_sv_catpvf(aTHX_ dsv, ":%04x", | |
6365 | (int) | |
6366 | ((char*)frame->addr - (char*)frame->symbol_addr)); | |
6367 | } | |
6368 | Perl_sv_catpvf(aTHX_ dsv, "\t%s", | |
6369 | frame->symbol_name_size && | |
6370 | frame->symbol_name_offset ? | |
6371 | (char*)bt + frame->symbol_name_offset : "-"); | |
6372 | if (frame->source_name_size && | |
6373 | frame->source_name_offset && | |
6374 | frame->source_line_number) { | |
147e3846 | 6375 | Perl_sv_catpvf(aTHX_ dsv, "\t%s:%" UVuf, |
470dd224 JH |
6376 | (char*)bt + frame->source_name_offset, |
6377 | (UV)frame->source_line_number); | |
6378 | } else { | |
6379 | Perl_sv_catpvf(aTHX_ dsv, "\t-"); | |
6380 | } | |
6381 | Perl_sv_catpvf(aTHX_ dsv, "\t%s", | |
6382 | frame->object_name_size && | |
6383 | frame->object_name_offset ? | |
6384 | (char*)bt + frame->object_name_offset : "-"); | |
6385 | /* The frame->object_base_addr is not output, | |
6386 | * but it is used for symbolizing/symbolicating. */ | |
6387 | sv_catpvs(dsv, "\n"); | |
6388 | } | |
6389 | ||
3c7dccdc | 6390 | Perl_free_c_backtrace(bt); |
470dd224 JH |
6391 | |
6392 | return dsv; | |
6393 | } | |
6394 | ||
6395 | return NULL; | |
6396 | } | |
6397 | ||
6398 | /* | |
6399 | =for apidoc dump_c_backtrace | |
6400 | ||
796b6530 | 6401 | Dumps the C backtrace to the given C<fp>. |
470dd224 JH |
6402 | |
6403 | Returns true if a backtrace could be retrieved, false if not. | |
6404 | ||
6405 | =cut | |
6406 | */ | |
6407 | ||
6408 | bool | |
6409 | Perl_dump_c_backtrace(pTHX_ PerlIO* fp, int depth, int skip) | |
6410 | { | |
6411 | SV* sv; | |
6412 | ||
6413 | PERL_ARGS_ASSERT_DUMP_C_BACKTRACE; | |
6414 | ||
6415 | sv = Perl_get_c_backtrace_dump(aTHX_ depth, skip); | |
6416 | if (sv) { | |
6417 | sv_2mortal(sv); | |
6418 | PerlIO_printf(fp, "%s", SvPV_nolen(sv)); | |
6419 | return TRUE; | |
6420 | } | |
6421 | return FALSE; | |
6422 | } | |
6423 | ||
6424 | #endif /* #ifdef USE_C_BACKTRACE */ | |
3be8f094 | 6425 | |
3baee7cc JH |
6426 | #ifdef PERL_TSA_ACTIVE |
6427 | ||
6428 | /* pthread_mutex_t and perl_mutex are typedef equivalent | |
6429 | * so casting the pointers is fine. */ | |
6430 | ||
6431 | int perl_tsa_mutex_lock(perl_mutex* mutex) | |
6432 | { | |
6433 | return pthread_mutex_lock((pthread_mutex_t *) mutex); | |
6434 | } | |
6435 | ||
6436 | int perl_tsa_mutex_unlock(perl_mutex* mutex) | |
6437 | { | |
6438 | return pthread_mutex_unlock((pthread_mutex_t *) mutex); | |
6439 | } | |
6440 | ||
6441 | int perl_tsa_mutex_destroy(perl_mutex* mutex) | |
6442 | { | |
6443 | return pthread_mutex_destroy((pthread_mutex_t *) mutex); | |
6444 | } | |
6445 | ||
6446 | #endif | |
6447 | ||
3f6bd23a DM |
6448 | |
6449 | #ifdef USE_DTRACE | |
6450 | ||
6451 | /* log a sub call or return */ | |
6452 | ||
6453 | void | |
6454 | Perl_dtrace_probe_call(pTHX_ CV *cv, bool is_call) | |
6455 | { | |
6456 | const char *func; | |
6457 | const char *file; | |
6458 | const char *stash; | |
6459 | const COP *start; | |
6460 | line_t line; | |
6461 | ||
6462 | PERL_ARGS_ASSERT_DTRACE_PROBE_CALL; | |
6463 | ||
6464 | if (CvNAMED(cv)) { | |
6465 | HEK *hek = CvNAME_HEK(cv); | |
6466 | func = HEK_KEY(hek); | |
6467 | } | |
6468 | else { | |
6469 | GV *gv = CvGV(cv); | |
6470 | func = GvENAME(gv); | |
6471 | } | |
6472 | start = (const COP *)CvSTART(cv); | |
6473 | file = CopFILE(start); | |
6474 | line = CopLINE(start); | |
6475 | stash = CopSTASHPV(start); | |
6476 | ||
6477 | if (is_call) { | |
6478 | PERL_SUB_ENTRY(func, file, line, stash); | |
6479 | } | |
6480 | else { | |
6481 | PERL_SUB_RETURN(func, file, line, stash); | |
6482 | } | |
6483 | } | |
6484 | ||
6485 | ||
6486 | /* log a require file loading/loaded */ | |
6487 | ||
6488 | void | |
6489 | Perl_dtrace_probe_load(pTHX_ const char *name, bool is_loading) | |
6490 | { | |
6491 | PERL_ARGS_ASSERT_DTRACE_PROBE_LOAD; | |
6492 | ||
6493 | if (is_loading) { | |
6494 | PERL_LOADING_FILE(name); | |
6495 | } | |
6496 | else { | |
6497 | PERL_LOADED_FILE(name); | |
6498 | } | |
6499 | } | |
6500 | ||
6501 | ||
6502 | /* log an op execution */ | |
6503 | ||
6504 | void | |
6505 | Perl_dtrace_probe_op(pTHX_ const OP *op) | |
6506 | { | |
6507 | PERL_ARGS_ASSERT_DTRACE_PROBE_OP; | |
6508 | ||
6509 | PERL_OP_ENTRY(OP_NAME(op)); | |
6510 | } | |
6511 | ||
6512 | ||
6513 | /* log a compile/run phase change */ | |
6514 | ||
6515 | void | |
6516 | Perl_dtrace_probe_phase(pTHX_ enum perl_phase phase) | |
6517 | { | |
6518 | const char *ph_old = PL_phase_names[PL_phase]; | |
6519 | const char *ph_new = PL_phase_names[phase]; | |
6520 | ||
6521 | PERL_PHASE_CHANGE(ph_new, ph_old); | |
6522 | } | |
6523 | ||
6524 | #endif | |
6525 | ||
3be8f094 | 6526 | /* |
14d04a33 | 6527 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 6528 | */ |