Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* scope.c |
79072805 | 2 | * |
e6906430 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
ae53e38e | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others |
79072805 LW |
5 | * |
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. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "For the fashion of Minas Tirith was such that it was built on seven | |
13 | * levels..." | |
79072805 LW |
14 | */ |
15 | ||
40d34c0d SB |
16 | /* This file contains functions to manipulate several of Perl's stacks; |
17 | * in particular it contains code to push various types of things onto | |
18 | * the savestack, then to pop them off and perform the correct restorative | |
19 | * action for each one. This corresponds to the cleanup Perl does at | |
20 | * each scope exit. | |
21 | */ | |
22 | ||
79072805 | 23 | #include "EXTERN.h" |
864dbfa3 | 24 | #define PERL_IN_SCOPE_C |
79072805 LW |
25 | #include "perl.h" |
26 | ||
14dd3ad8 | 27 | #if defined(PERL_FLEXIBLE_EXCEPTIONS) |
312caa8e | 28 | void * |
146174a9 CB |
29 | Perl_default_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt, |
30 | protect_body_t body, ...) | |
312caa8e | 31 | { |
c5be433b GS |
32 | void *ret; |
33 | va_list args; | |
34 | va_start(args, body); | |
146174a9 | 35 | ret = vdefault_protect(pcur_env, excpt, body, &args); |
c5be433b GS |
36 | va_end(args); |
37 | return ret; | |
38 | } | |
39 | ||
40 | void * | |
146174a9 CB |
41 | Perl_vdefault_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt, |
42 | protect_body_t body, va_list *args) | |
c5be433b | 43 | { |
312caa8e CS |
44 | int ex; |
45 | void *ret; | |
46 | ||
312caa8e CS |
47 | JMPENV_PUSH(ex); |
48 | if (ex) | |
49 | ret = NULL; | |
c5be433b GS |
50 | else |
51 | ret = CALL_FPTR(body)(aTHX_ *args); | |
a6c40364 | 52 | *excpt = ex; |
312caa8e CS |
53 | JMPENV_POP; |
54 | return ret; | |
55 | } | |
14dd3ad8 | 56 | #endif |
312caa8e | 57 | |
a0d0e21e | 58 | SV** |
864dbfa3 | 59 | Perl_stack_grow(pTHX_ SV **sp, SV **p, int n) |
a0d0e21e | 60 | { |
3280af22 | 61 | PL_stack_sp = sp; |
2ce36478 | 62 | #ifndef STRESS_REALLOC |
3280af22 | 63 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128); |
2ce36478 | 64 | #else |
6b88bc9c | 65 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1); |
2ce36478 | 66 | #endif |
3280af22 | 67 | return PL_stack_sp; |
a0d0e21e LW |
68 | } |
69 | ||
2ce36478 SM |
70 | #ifndef STRESS_REALLOC |
71 | #define GROW(old) ((old) * 3 / 2) | |
72 | #else | |
73 | #define GROW(old) ((old) + 1) | |
74 | #endif | |
75 | ||
e336de0d | 76 | PERL_SI * |
864dbfa3 | 77 | Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems) |
e336de0d GS |
78 | { |
79 | PERL_SI *si; | |
cd7a8267 | 80 | Newx(si, 1, PERL_SI); |
e336de0d GS |
81 | si->si_stack = newAV(); |
82 | AvREAL_off(si->si_stack); | |
83 | av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0); | |
3280af22 | 84 | AvALLOC(si->si_stack)[0] = &PL_sv_undef; |
e336de0d GS |
85 | AvFILLp(si->si_stack) = 0; |
86 | si->si_prev = 0; | |
87 | si->si_next = 0; | |
88 | si->si_cxmax = cxitems - 1; | |
89 | si->si_cxix = -1; | |
e788e7d3 | 90 | si->si_type = PERLSI_UNDEF; |
cd7a8267 | 91 | Newx(si->si_cxstack, cxitems, PERL_CONTEXT); |
9965345d JH |
92 | /* Without any kind of initialising PUSHSUBST() |
93 | * in pp_subst() will read uninitialised heap. */ | |
6f6cc653 | 94 | PoisonNew(si->si_cxstack, cxitems, PERL_CONTEXT); |
e336de0d GS |
95 | return si; |
96 | } | |
97 | ||
79072805 | 98 | I32 |
864dbfa3 | 99 | Perl_cxinc(pTHX) |
79072805 | 100 | { |
8c18bf38 | 101 | const IV old_max = cxstack_max; |
2ce36478 | 102 | cxstack_max = GROW(cxstack_max); |
c09156bb | 103 | Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */ |
9965345d JH |
104 | /* Without any kind of initialising deep enough recursion |
105 | * will end up reading uninitialised PERL_CONTEXTs. */ | |
6f6cc653 | 106 | PoisonNew(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT); |
79072805 LW |
107 | return cxstack_ix + 1; |
108 | } | |
109 | ||
110 | void | |
864dbfa3 | 111 | Perl_push_return(pTHX_ OP *retop) |
79072805 | 112 | { |
3280af22 NIS |
113 | if (PL_retstack_ix == PL_retstack_max) { |
114 | PL_retstack_max = GROW(PL_retstack_max); | |
115 | Renew(PL_retstack, PL_retstack_max, OP*); | |
79072805 | 116 | } |
3280af22 | 117 | PL_retstack[PL_retstack_ix++] = retop; |
79072805 LW |
118 | } |
119 | ||
120 | OP * | |
864dbfa3 | 121 | Perl_pop_return(pTHX) |
79072805 | 122 | { |
3280af22 NIS |
123 | if (PL_retstack_ix > 0) |
124 | return PL_retstack[--PL_retstack_ix]; | |
79072805 LW |
125 | else |
126 | return Nullop; | |
127 | } | |
128 | ||
129 | void | |
864dbfa3 | 130 | Perl_push_scope(pTHX) |
79072805 | 131 | { |
3280af22 NIS |
132 | if (PL_scopestack_ix == PL_scopestack_max) { |
133 | PL_scopestack_max = GROW(PL_scopestack_max); | |
134 | Renew(PL_scopestack, PL_scopestack_max, I32); | |
79072805 | 135 | } |
3280af22 | 136 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 LW |
137 | |
138 | } | |
139 | ||
140 | void | |
864dbfa3 | 141 | Perl_pop_scope(pTHX) |
79072805 | 142 | { |
7120cae1 | 143 | const I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 | 144 | LEAVE_SCOPE(oldsave); |
79072805 LW |
145 | } |
146 | ||
147 | void | |
864dbfa3 | 148 | Perl_markstack_grow(pTHX) |
a0d0e21e | 149 | { |
7120cae1 AL |
150 | const I32 oldmax = PL_markstack_max - PL_markstack; |
151 | const I32 newmax = GROW(oldmax); | |
a0d0e21e | 152 | |
3280af22 NIS |
153 | Renew(PL_markstack, newmax, I32); |
154 | PL_markstack_ptr = PL_markstack + oldmax; | |
155 | PL_markstack_max = PL_markstack + newmax; | |
a0d0e21e LW |
156 | } |
157 | ||
158 | void | |
864dbfa3 | 159 | Perl_savestack_grow(pTHX) |
79072805 | 160 | { |
8aacddc1 | 161 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
3280af22 | 162 | Renew(PL_savestack, PL_savestack_max, ANY); |
79072805 LW |
163 | } |
164 | ||
f3479639 JH |
165 | void |
166 | Perl_savestack_grow_cnt(pTHX_ I32 need) | |
167 | { | |
168 | PL_savestack_max = PL_savestack_ix + need; | |
169 | Renew(PL_savestack, PL_savestack_max, ANY); | |
170 | } | |
171 | ||
2ce36478 SM |
172 | #undef GROW |
173 | ||
79072805 | 174 | void |
864dbfa3 | 175 | Perl_tmps_grow(pTHX_ I32 n) |
677b06e3 | 176 | { |
677b06e3 GS |
177 | #ifndef STRESS_REALLOC |
178 | if (n < 128) | |
179 | n = (PL_tmps_max < 512) ? 128 : 512; | |
180 | #endif | |
181 | PL_tmps_max = PL_tmps_ix + n + 1; | |
182 | Renew(PL_tmps_stack, PL_tmps_max, SV*); | |
183 | } | |
184 | ||
185 | ||
186 | void | |
864dbfa3 | 187 | Perl_free_tmps(pTHX) |
79072805 LW |
188 | { |
189 | /* XXX should tmps_floor live in cxstack? */ | |
7120cae1 | 190 | const I32 myfloor = PL_tmps_floor; |
3280af22 | 191 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
62cc1c5f | 192 | SV* const sv = PL_tmps_stack[PL_tmps_ix]; |
0e2d6244 | 193 | PL_tmps_stack[PL_tmps_ix--] = NULL; |
8aacddc1 | 194 | if (sv && sv != &PL_sv_undef) { |
463ee0b2 | 195 | SvTEMP_off(sv); |
8990e307 | 196 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 | 197 | } |
79072805 LW |
198 | } |
199 | } | |
200 | ||
76e3520e | 201 | STATIC SV * |
cea2e8a9 | 202 | S_save_scalar_at(pTHX_ SV **sptr) |
79072805 | 203 | { |
62cc1c5f | 204 | SV * const osv = *sptr; |
133cdda0 | 205 | register SV * const sv = *sptr = newSV(0); |
79072805 | 206 | |
a0d0e21e | 207 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
a0d0e21e | 208 | if (SvGMAGICAL(osv)) { |
7120cae1 | 209 | const bool oldtainted = PL_tainted; |
a0d0e21e | 210 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
d342bb89 | 211 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
3280af22 | 212 | PL_tainted = oldtainted; |
a0d0e21e | 213 | } |
74435569 | 214 | mg_localize(osv, sv); |
79072805 LW |
215 | } |
216 | return sv; | |
217 | } | |
218 | ||
7a4c00b4 | 219 | SV * |
864dbfa3 | 220 | Perl_save_scalar(pTHX_ GV *gv) |
7a4c00b4 | 221 | { |
e776e865 | 222 | SV ** const sptr = &GvSVn(gv); |
74435569 NC |
223 | PL_localizing = 1; |
224 | SvGETMAGIC(*sptr); | |
225 | PL_localizing = 0; | |
7a4c00b4 | 226 | SSCHECK(3); |
be2d5e07 | 227 | SSPUSHPTR(SvREFCNT_inc_simple(gv)); |
4e4c362e | 228 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 | 229 | SSPUSHINT(SAVEt_SV); |
4e4c362e | 230 | return save_scalar_at(sptr); |
7a4c00b4 | 231 | } |
232 | ||
f4dd75d9 | 233 | /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to |
b9d12d37 GS |
234 | * restore a global SV to its prior contents, freeing new value. */ |
235 | void | |
864dbfa3 | 236 | Perl_save_generic_svref(pTHX_ SV **sptr) |
b9d12d37 | 237 | { |
b9d12d37 GS |
238 | SSCHECK(3); |
239 | SSPUSHPTR(sptr); | |
240 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
241 | SSPUSHINT(SAVEt_GENERIC_SVREF); | |
242 | } | |
243 | ||
f4dd75d9 GS |
244 | /* Like save_pptr(), but also Safefree()s the new value if it is different |
245 | * from the old one. Can be used to restore a global char* to its prior | |
246 | * contents, freeing new value. */ | |
247 | void | |
248 | Perl_save_generic_pvref(pTHX_ char **str) | |
249 | { | |
f4dd75d9 GS |
250 | SSCHECK(3); |
251 | SSPUSHPTR(str); | |
252 | SSPUSHPTR(*str); | |
253 | SSPUSHINT(SAVEt_GENERIC_PVREF); | |
254 | } | |
255 | ||
05ec9bb3 NIS |
256 | /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree(). |
257 | * Can be used to restore a shared global char* to its prior | |
258 | * contents, freeing new value. */ | |
259 | void | |
260 | Perl_save_shared_pvref(pTHX_ char **str) | |
261 | { | |
262 | SSCHECK(3); | |
263 | SSPUSHPTR(str); | |
264 | SSPUSHPTR(*str); | |
265 | SSPUSHINT(SAVEt_SHARED_PVREF); | |
266 | } | |
267 | ||
79072805 | 268 | void |
864dbfa3 | 269 | Perl_save_gp(pTHX_ GV *gv, I32 empty) |
79072805 | 270 | { |
f0e060fc | 271 | SSGROW(3); |
4633a7c4 | 272 | SSPUSHPTR(SvREFCNT_inc(gv)); |
5f05dabc | 273 | SSPUSHPTR(GvGP(gv)); |
f0e060fc | 274 | SSPUSHINT(SAVEt_GP_NEW); |
79072805 | 275 | |
5f05dabc | 276 | if (empty) { |
22400caf | 277 | GP *gp = Perl_newGP(aTHX_ gv); |
146174a9 | 278 | |
fae75791 | 279 | if (GvCVu(gv)) |
3280af22 | 280 | PL_sub_generation++; /* taking a method out of circulation */ |
146174a9 CB |
281 | if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) { |
282 | gp->gp_io = newIO(); | |
283 | IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START; | |
284 | } | |
22400caf | 285 | GvGP(gv) = gp; |
5f05dabc | 286 | } |
287 | else { | |
44a8e56a | 288 | gp_ref(GvGP(gv)); |
5f05dabc | 289 | GvINTRO_on(gv); |
290 | } | |
79072805 | 291 | } |
79072805 | 292 | |
79072805 | 293 | AV * |
864dbfa3 | 294 | Perl_save_ary(pTHX_ GV *gv) |
79072805 | 295 | { |
62cc1c5f | 296 | AV * const oav = GvAVn(gv); |
67a38de0 | 297 | AV *av; |
fb73857a | 298 | |
67a38de0 NIS |
299 | if (!AvREAL(oav) && AvREIFY(oav)) |
300 | av_reify(oav); | |
79072805 LW |
301 | SSCHECK(3); |
302 | SSPUSHPTR(gv); | |
67a38de0 | 303 | SSPUSHPTR(oav); |
79072805 LW |
304 | SSPUSHINT(SAVEt_AV); |
305 | ||
0e2d6244 | 306 | GvAV(gv) = NULL; |
fb73857a | 307 | av = GvAVn(gv); |
74435569 NC |
308 | if (SvMAGIC(oav)) |
309 | mg_localize((SV*)oav, (SV*)av); | |
fb73857a | 310 | return av; |
79072805 LW |
311 | } |
312 | ||
313 | HV * | |
864dbfa3 | 314 | Perl_save_hash(pTHX_ GV *gv) |
79072805 | 315 | { |
fb73857a | 316 | HV *ohv, *hv; |
317 | ||
79072805 LW |
318 | SSCHECK(3); |
319 | SSPUSHPTR(gv); | |
fb73857a | 320 | SSPUSHPTR(ohv = GvHVn(gv)); |
79072805 LW |
321 | SSPUSHINT(SAVEt_HV); |
322 | ||
0e2d6244 | 323 | GvHV(gv) = NULL; |
fb73857a | 324 | hv = GvHVn(gv); |
74435569 NC |
325 | if (SvMAGIC(ohv)) |
326 | mg_localize((SV*)ohv, (SV*)hv); | |
fb73857a | 327 | return hv; |
79072805 LW |
328 | } |
329 | ||
330 | void | |
864dbfa3 | 331 | Perl_save_item(pTHX_ register SV *item) |
79072805 | 332 | { |
62cc1c5f | 333 | register SV * const sv = newSVsv(item); |
79072805 LW |
334 | |
335 | SSCHECK(3); | |
336 | SSPUSHPTR(item); /* remember the pointer */ | |
79072805 LW |
337 | SSPUSHPTR(sv); /* remember the value */ |
338 | SSPUSHINT(SAVEt_ITEM); | |
339 | } | |
340 | ||
341 | void | |
864dbfa3 | 342 | Perl_save_int(pTHX_ int *intp) |
79072805 LW |
343 | { |
344 | SSCHECK(3); | |
345 | SSPUSHINT(*intp); | |
346 | SSPUSHPTR(intp); | |
347 | SSPUSHINT(SAVEt_INT); | |
348 | } | |
349 | ||
350 | void | |
4f4e7967 JH |
351 | Perl_save_bool(pTHX_ bool *boolp) |
352 | { | |
353 | SSCHECK(3); | |
354 | SSPUSHBOOL(*boolp); | |
355 | SSPUSHPTR(boolp); | |
356 | SSPUSHINT(SAVEt_BOOL); | |
357 | } | |
358 | ||
359 | void | |
244f8405 NC |
360 | Perl_save_I8(pTHX_ I8 *bytep) |
361 | { | |
362 | SSCHECK(3); | |
363 | SSPUSHINT(*bytep); | |
364 | SSPUSHPTR(bytep); | |
365 | SSPUSHINT(SAVEt_I8); | |
366 | } | |
367 | ||
368 | void | |
864dbfa3 | 369 | Perl_save_I32(pTHX_ I32 *intp) |
79072805 LW |
370 | { |
371 | SSCHECK(3); | |
372 | SSPUSHINT(*intp); | |
373 | SSPUSHPTR(intp); | |
374 | SSPUSHINT(SAVEt_I32); | |
375 | } | |
376 | ||
85e6fe83 LW |
377 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
378 | * force word-alignment and we'll miss the pointer. | |
379 | */ | |
380 | void | |
864dbfa3 | 381 | Perl_save_pptr(pTHX_ char **pptr) |
85e6fe83 LW |
382 | { |
383 | SSCHECK(3); | |
384 | SSPUSHPTR(*pptr); | |
385 | SSPUSHPTR(pptr); | |
386 | SSPUSHINT(SAVEt_PPTR); | |
387 | } | |
388 | ||
79072805 | 389 | void |
146174a9 CB |
390 | Perl_save_vptr(pTHX_ void *ptr) |
391 | { | |
146174a9 CB |
392 | SSCHECK(3); |
393 | SSPUSHPTR(*(char**)ptr); | |
394 | SSPUSHPTR(ptr); | |
395 | SSPUSHINT(SAVEt_VPTR); | |
396 | } | |
397 | ||
398 | void | |
864dbfa3 | 399 | Perl_save_sptr(pTHX_ SV **sptr) |
79072805 LW |
400 | { |
401 | SSCHECK(3); | |
402 | SSPUSHPTR(*sptr); | |
403 | SSPUSHPTR(sptr); | |
404 | SSPUSHINT(SAVEt_SPTR); | |
405 | } | |
406 | ||
c3564e5c GS |
407 | void |
408 | Perl_save_padsv(pTHX_ PADOFFSET off) | |
409 | { | |
c3564e5c | 410 | SSCHECK(4); |
d7afa7f5 | 411 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
c3564e5c | 412 | SSPUSHPTR(PL_curpad[off]); |
d7afa7f5 | 413 | SSPUSHPTR(PL_comppad); |
c3564e5c GS |
414 | SSPUSHLONG((long)off); |
415 | SSPUSHINT(SAVEt_PADSV); | |
416 | } | |
417 | ||
54b9620d | 418 | SV ** |
864dbfa3 | 419 | Perl_save_threadsv(pTHX_ PADOFFSET i) |
54b9620d | 420 | { |
4d1ff10f | 421 | #ifdef USE_5005THREADS |
940cb80d | 422 | SV **svp = &THREADSV(i); /* XXX Change to save by offset */ |
146174a9 CB |
423 | DEBUG_S(PerlIO_printf(Perl_debug_log, "save_threadsv %"UVuf": %p %p:%s\n", |
424 | (UV)i, svp, *svp, SvPEEK(*svp))); | |
54b9620d MB |
425 | save_svref(svp); |
426 | return svp; | |
427 | #else | |
cea2e8a9 | 428 | Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl"); |
4f1e9d25 | 429 | PERL_UNUSED_ARG(i); |
24c2fff4 | 430 | NORETURN_FUNCTION_END; |
4d1ff10f | 431 | #endif /* USE_5005THREADS */ |
54b9620d MB |
432 | } |
433 | ||
79072805 | 434 | void |
864dbfa3 | 435 | Perl_save_hptr(pTHX_ HV **hptr) |
79072805 LW |
436 | { |
437 | SSCHECK(3); | |
85e6fe83 | 438 | SSPUSHPTR(*hptr); |
79072805 LW |
439 | SSPUSHPTR(hptr); |
440 | SSPUSHINT(SAVEt_HPTR); | |
441 | } | |
442 | ||
443 | void | |
864dbfa3 | 444 | Perl_save_aptr(pTHX_ AV **aptr) |
79072805 LW |
445 | { |
446 | SSCHECK(3); | |
85e6fe83 | 447 | SSPUSHPTR(*aptr); |
79072805 LW |
448 | SSPUSHPTR(aptr); |
449 | SSPUSHINT(SAVEt_APTR); | |
450 | } | |
451 | ||
452 | void | |
864dbfa3 | 453 | Perl_save_freesv(pTHX_ SV *sv) |
8990e307 LW |
454 | { |
455 | SSCHECK(2); | |
456 | SSPUSHPTR(sv); | |
457 | SSPUSHINT(SAVEt_FREESV); | |
458 | } | |
459 | ||
460 | void | |
26d9b02f JH |
461 | Perl_save_mortalizesv(pTHX_ SV *sv) |
462 | { | |
463 | SSCHECK(2); | |
464 | SSPUSHPTR(sv); | |
465 | SSPUSHINT(SAVEt_MORTALIZESV); | |
466 | } | |
467 | ||
468 | void | |
864dbfa3 | 469 | Perl_save_freeop(pTHX_ OP *o) |
8990e307 LW |
470 | { |
471 | SSCHECK(2); | |
11343788 | 472 | SSPUSHPTR(o); |
8990e307 LW |
473 | SSPUSHINT(SAVEt_FREEOP); |
474 | } | |
475 | ||
476 | void | |
864dbfa3 | 477 | Perl_save_freepv(pTHX_ char *pv) |
8990e307 LW |
478 | { |
479 | SSCHECK(2); | |
480 | SSPUSHPTR(pv); | |
481 | SSPUSHINT(SAVEt_FREEPV); | |
482 | } | |
483 | ||
484 | void | |
864dbfa3 | 485 | Perl_save_clearsv(pTHX_ SV **svp) |
8990e307 | 486 | { |
d7afa7f5 | 487 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
8990e307 | 488 | SSCHECK(2); |
3280af22 | 489 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 LW |
490 | SSPUSHINT(SAVEt_CLEARSV); |
491 | } | |
492 | ||
493 | void | |
864dbfa3 | 494 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
8990e307 LW |
495 | { |
496 | SSCHECK(4); | |
497 | SSPUSHINT(klen); | |
498 | SSPUSHPTR(key); | |
be2d5e07 | 499 | SSPUSHPTR(SvREFCNT_inc_simple(hv)); |
8990e307 LW |
500 | SSPUSHINT(SAVEt_DELETE); |
501 | } | |
502 | ||
503 | void | |
244f8405 NC |
504 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
505 | { | |
506 | SSCHECK(3); | |
507 | SSPUSHDPTR(f); | |
508 | SSPUSHPTR(p); | |
509 | SSPUSHINT(SAVEt_DESTRUCTOR); | |
510 | } | |
511 | ||
512 | void | |
146174a9 CB |
513 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
514 | { | |
146174a9 CB |
515 | SSCHECK(3); |
516 | SSPUSHDXPTR(f); | |
517 | SSPUSHPTR(p); | |
518 | SSPUSHINT(SAVEt_DESTRUCTOR_X); | |
519 | } | |
520 | ||
521 | void | |
864dbfa3 | 522 | Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr) |
4e4c362e | 523 | { |
bfc4de9f | 524 | SV *sv; |
74435569 | 525 | SvGETMAGIC(*sptr); |
4e4c362e | 526 | SSCHECK(4); |
be2d5e07 | 527 | SSPUSHPTR(SvREFCNT_inc_simple(av)); |
4e4c362e GS |
528 | SSPUSHINT(idx); |
529 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
530 | SSPUSHINT(SAVEt_AELEM); | |
13057ebc DM |
531 | /* if it gets reified later, the restore will have the wrong refcnt */ |
532 | if (!AvREAL(av) && AvREIFY(av)) | |
be2d5e07 | 533 | SvREFCNT_inc_void(*sptr); |
4e4c362e | 534 | save_scalar_at(sptr); |
bfc4de9f DM |
535 | sv = *sptr; |
536 | /* If we're localizing a tied array element, this new sv | |
537 | * won't actually be stored in the array - so it won't get | |
538 | * reaped when the localize ends. Ensure it gets reaped by | |
539 | * mortifying it instead. DAPM */ | |
540 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
541 | sv_2mortal(sv); | |
4e4c362e GS |
542 | } |
543 | ||
544 | void | |
864dbfa3 | 545 | Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr) |
4e4c362e | 546 | { |
bfc4de9f | 547 | SV *sv; |
74435569 | 548 | SvGETMAGIC(*sptr); |
4e4c362e | 549 | SSCHECK(4); |
be2d5e07 AL |
550 | SSPUSHPTR(SvREFCNT_inc_simple(hv)); |
551 | SSPUSHPTR(SvREFCNT_inc_simple(key)); | |
4e4c362e GS |
552 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
553 | SSPUSHINT(SAVEt_HELEM); | |
554 | save_scalar_at(sptr); | |
bfc4de9f DM |
555 | sv = *sptr; |
556 | /* If we're localizing a tied hash element, this new sv | |
557 | * won't actually be stored in the hash - so it won't get | |
558 | * reaped when the localize ends. Ensure it gets reaped by | |
559 | * mortifying it instead. DAPM */ | |
560 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
561 | sv_2mortal(sv); | |
4e4c362e GS |
562 | } |
563 | ||
c01caf97 NC |
564 | SV* |
565 | Perl_save_svref(pTHX_ SV **sptr) | |
566 | { | |
567 | SvGETMAGIC(*sptr); | |
568 | SSCHECK(3); | |
569 | SSPUSHPTR(sptr); | |
570 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
571 | SSPUSHINT(SAVEt_SVREF); | |
572 | return save_scalar_at(sptr); | |
573 | } | |
574 | ||
4e4c362e | 575 | void |
864dbfa3 | 576 | Perl_save_op(pTHX) |
462e5cf6 | 577 | { |
462e5cf6 | 578 | SSCHECK(2); |
533c011a | 579 | SSPUSHPTR(PL_op); |
462e5cf6 MB |
580 | SSPUSHINT(SAVEt_OP); |
581 | } | |
582 | ||
455ece5e | 583 | I32 |
864dbfa3 | 584 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
455ece5e | 585 | { |
7120cae1 | 586 | register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
8aacddc1 | 587 | - (char*)PL_savestack); |
7120cae1 | 588 | register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
455ece5e | 589 | |
161d0ac1 | 590 | SSGROW(elems + 2); |
455ece5e AD |
591 | |
592 | PL_savestack_ix += elems; | |
593 | SSPUSHINT(elems); | |
594 | SSPUSHINT(SAVEt_ALLOC); | |
595 | return start; | |
596 | } | |
597 | ||
462e5cf6 | 598 | void |
864dbfa3 | 599 | Perl_leave_scope(pTHX_ I32 base) |
79072805 LW |
600 | { |
601 | register SV *sv; | |
602 | register SV *value; | |
603 | register GV *gv; | |
604 | register AV *av; | |
605 | register HV *hv; | |
606 | register void* ptr; | |
f4dd75d9 | 607 | register char* str; |
161b7d16 | 608 | I32 i; |
79072805 LW |
609 | |
610 | if (base < -1) | |
cea2e8a9 | 611 | Perl_croak(aTHX_ "panic: corrupt saved stack index"); |
3280af22 | 612 | while (PL_savestack_ix > base) { |
f0e060fc NC |
613 | const int type = SSPOPINT; |
614 | switch (type) { | |
79072805 LW |
615 | case SAVEt_ITEM: /* normal string */ |
616 | value = (SV*)SSPOPPTR; | |
617 | sv = (SV*)SSPOPPTR; | |
618 | sv_replace(sv,value); | |
3280af22 | 619 | PL_localizing = 2; |
79072805 | 620 | SvSETMAGIC(sv); |
3280af22 | 621 | PL_localizing = 0; |
79072805 | 622 | break; |
8aacddc1 | 623 | case SAVEt_SV: /* scalar reference */ |
79072805 LW |
624 | value = (SV*)SSPOPPTR; |
625 | gv = (GV*)SSPOPPTR; | |
7a4c00b4 | 626 | ptr = &GvSV(gv); |
13057ebc | 627 | av = (AV*)gv; /* what to refcnt_dec */ |
7a4c00b4 | 628 | restore_sv: |
79072805 | 629 | sv = *(SV**)ptr; |
146174a9 | 630 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
54b9620d | 631 | "restore svref: %p %p:%s -> %p:%s\n", |
8aacddc1 | 632 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
a0d0e21e | 633 | *(SV**)ptr = value; |
65b7047c | 634 | SvREFCNT_dec(sv); |
3280af22 | 635 | PL_localizing = 2; |
a0d0e21e | 636 | SvSETMAGIC(value); |
3280af22 | 637 | PL_localizing = 0; |
4e4c362e | 638 | SvREFCNT_dec(value); |
13057ebc DM |
639 | if (av) /* actually an av, hv or gv */ |
640 | SvREFCNT_dec(av); | |
8aacddc1 | 641 | break; |
c01caf97 NC |
642 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
643 | str = (char*)SSPOPPTR; | |
644 | ptr = SSPOPPTR; | |
645 | if (*(char**)ptr != str) { | |
646 | Safefree(*(char**)ptr); | |
647 | *(char**)ptr = str; | |
648 | } | |
649 | break; | |
650 | case SAVEt_SHARED_PVREF: /* shared pv */ | |
651 | str = (char*)SSPOPPTR; | |
652 | ptr = SSPOPPTR; | |
653 | if (*(char**)ptr != str) { | |
654 | #ifdef NETWARE | |
655 | PerlMem_free(*(char**)ptr); | |
656 | #else | |
657 | PerlMemShared_free(*(char**)ptr); | |
658 | #endif | |
659 | *(char**)ptr = str; | |
660 | } | |
661 | break; | |
662 | case SAVEt_GENERIC_SVREF: /* generic sv */ | |
663 | value = (SV*)SSPOPPTR; | |
664 | ptr = SSPOPPTR; | |
665 | sv = *(SV**)ptr; | |
666 | *(SV**)ptr = value; | |
667 | SvREFCNT_dec(sv); | |
668 | SvREFCNT_dec(value); | |
669 | break; | |
8aacddc1 | 670 | case SAVEt_AV: /* array reference */ |
79072805 LW |
671 | av = (AV*)SSPOPPTR; |
672 | gv = (GV*)SSPOPPTR; | |
fb73857a | 673 | if (GvAV(gv)) { |
7120cae1 | 674 | AV * const goner = GvAV(gv); |
a8dc4fe8 | 675 | SvMAGIC_set(av, SvMAGIC(goner)); |
32da55ab | 676 | SvFLAGS((SV*)av) |= SvMAGICAL(goner); |
fb73857a | 677 | SvMAGICAL_off(goner); |
a8dc4fe8 | 678 | SvMAGIC_set(goner, NULL); |
fb73857a | 679 | SvREFCNT_dec(goner); |
680 | } | |
8aacddc1 | 681 | GvAV(gv) = av; |
fb73857a | 682 | if (SvMAGICAL(av)) { |
3280af22 | 683 | PL_localizing = 2; |
fb73857a | 684 | SvSETMAGIC((SV*)av); |
3280af22 | 685 | PL_localizing = 0; |
fb73857a | 686 | } |
8aacddc1 NIS |
687 | break; |
688 | case SAVEt_HV: /* hash reference */ | |
79072805 LW |
689 | hv = (HV*)SSPOPPTR; |
690 | gv = (GV*)SSPOPPTR; | |
fb73857a | 691 | if (GvHV(gv)) { |
7120cae1 | 692 | HV * const goner = GvHV(gv); |
a8dc4fe8 | 693 | SvMAGIC_set(hv, SvMAGIC(goner)); |
fb73857a | 694 | SvFLAGS(hv) |= SvMAGICAL(goner); |
695 | SvMAGICAL_off(goner); | |
a8dc4fe8 | 696 | SvMAGIC_set(goner, NULL); |
fb73857a | 697 | SvREFCNT_dec(goner); |
698 | } | |
8aacddc1 | 699 | GvHV(gv) = hv; |
fb73857a | 700 | if (SvMAGICAL(hv)) { |
3280af22 | 701 | PL_localizing = 2; |
fb73857a | 702 | SvSETMAGIC((SV*)hv); |
3280af22 | 703 | PL_localizing = 0; |
fb73857a | 704 | } |
8aacddc1 | 705 | break; |
79072805 LW |
706 | case SAVEt_INT: /* int reference */ |
707 | ptr = SSPOPPTR; | |
708 | *(int*)ptr = (int)SSPOPINT; | |
709 | break; | |
4f4e7967 JH |
710 | case SAVEt_BOOL: /* bool reference */ |
711 | ptr = SSPOPPTR; | |
712 | *(bool*)ptr = (bool)SSPOPBOOL; | |
713 | break; | |
79072805 LW |
714 | case SAVEt_I32: /* I32 reference */ |
715 | ptr = SSPOPPTR; | |
716 | *(I32*)ptr = (I32)SSPOPINT; | |
717 | break; | |
718 | case SAVEt_SPTR: /* SV* reference */ | |
719 | ptr = SSPOPPTR; | |
720 | *(SV**)ptr = (SV*)SSPOPPTR; | |
721 | break; | |
146174a9 | 722 | case SAVEt_VPTR: /* random* reference */ |
85e6fe83 LW |
723 | case SAVEt_PPTR: /* char* reference */ |
724 | ptr = SSPOPPTR; | |
725 | *(char**)ptr = (char*)SSPOPPTR; | |
726 | break; | |
79072805 LW |
727 | case SAVEt_HPTR: /* HV* reference */ |
728 | ptr = SSPOPPTR; | |
729 | *(HV**)ptr = (HV*)SSPOPPTR; | |
730 | break; | |
731 | case SAVEt_APTR: /* AV* reference */ | |
732 | ptr = SSPOPPTR; | |
733 | *(AV**)ptr = (AV*)SSPOPPTR; | |
734 | break; | |
f0e060fc NC |
735 | case SAVEt_GP_OLD: /* scalar reference */ |
736 | case SAVEt_GP_NEW: /* scalar reference */ | |
79072805 LW |
737 | ptr = SSPOPPTR; |
738 | gv = (GV*)SSPOPPTR; | |
fdac8c4b | 739 | if (SvPVX_const(gv) && SvLEN(gv) > 0) { |
a02c78fd | 740 | Safefree(SvPVX_mutable(gv)); |
8aacddc1 | 741 | } |
f0e060fc NC |
742 | if (type == SAVEt_GP_NEW) { |
743 | SvPV_set(gv, NULL); | |
744 | SvCUR_set(gv, 0); | |
745 | SvLEN_set(gv, 0); | |
746 | SvPOK_off(gv); | |
747 | } else { | |
748 | SvPV_set(gv, (char *)SSPOPPTR); | |
749 | SvCUR_set(gv, (STRLEN)SSPOPIV); | |
750 | SvLEN_set(gv, (STRLEN)SSPOPIV); | |
751 | } | |
8aacddc1 NIS |
752 | gp_free(gv); |
753 | GvGP(gv) = (GP*)ptr; | |
fae75791 | 754 | if (GvCVu(gv)) |
3280af22 | 755 | PL_sub_generation++; /* putting a method back into circulation */ |
4633a7c4 | 756 | SvREFCNT_dec(gv); |
8aacddc1 | 757 | break; |
8990e307 LW |
758 | case SAVEt_FREESV: |
759 | ptr = SSPOPPTR; | |
760 | SvREFCNT_dec((SV*)ptr); | |
761 | break; | |
26d9b02f JH |
762 | case SAVEt_MORTALIZESV: |
763 | ptr = SSPOPPTR; | |
764 | sv_2mortal((SV*)ptr); | |
765 | break; | |
8990e307 LW |
766 | case SAVEt_FREEOP: |
767 | ptr = SSPOPPTR; | |
d7afa7f5 | 768 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */ |
8990e307 LW |
769 | op_free((OP*)ptr); |
770 | break; | |
771 | case SAVEt_FREEPV: | |
772 | ptr = SSPOPPTR; | |
228fe6e6 | 773 | Safefree(ptr); |
8990e307 LW |
774 | break; |
775 | case SAVEt_CLEARSV: | |
3280af22 | 776 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 | 777 | sv = *(SV**)ptr; |
9755d405 JH |
778 | |
779 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, | |
d7afa7f5 JH |
780 | "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n", |
781 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), | |
782 | (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), | |
9755d405 JH |
783 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" |
784 | )); | |
785 | ||
bc44cdaf GS |
786 | /* Can clear pad variable in place? */ |
787 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { | |
8aacddc1 NIS |
788 | /* |
789 | * if a my variable that was made readonly is going out of | |
790 | * scope, we want to remove the readonlyness so that it can | |
791 | * go out of scope quietly | |
8aacddc1 | 792 | */ |
a26e96df | 793 | if (SvPADMY(sv) && !SvFAKE(sv)) |
8aacddc1 NIS |
794 | SvREADONLY_off(sv); |
795 | ||
6fc92669 | 796 | if (SvTHINKFIRST(sv)) |
840a7b70 | 797 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF); |
a0d0e21e LW |
798 | if (SvMAGICAL(sv)) |
799 | mg_free(sv); | |
8990e307 LW |
800 | |
801 | switch (SvTYPE(sv)) { | |
802 | case SVt_NULL: | |
803 | break; | |
804 | case SVt_PVAV: | |
44a8e56a | 805 | av_clear((AV*)sv); |
f194bc06 NC |
806 | /* Need to detach $#array from @array that has just gone |
807 | out of scope. Otherwise the first $#array controls the | |
808 | size of the array "newly" created the next time this | |
809 | scope is entered. | |
810 | */ | |
811 | if (AvARYLEN(sv)) { | |
812 | MAGIC *mg = mg_find (AvARYLEN(sv), PERL_MAGIC_arylen); | |
813 | ||
814 | if (mg) { | |
815 | mg->mg_obj = 0; | |
816 | } | |
817 | ||
818 | SvREFCNT_dec(AvARYLEN(sv)); | |
819 | AvARYLEN(sv) = 0; | |
820 | } | |
8990e307 LW |
821 | break; |
822 | case SVt_PVHV: | |
44a8e56a | 823 | hv_clear((HV*)sv); |
8990e307 LW |
824 | break; |
825 | case SVt_PVCV: | |
cea2e8a9 | 826 | Perl_croak(aTHX_ "panic: leave_scope pad code"); |
8990e307 | 827 | default: |
7460c263 | 828 | SvOK_off(sv); |
8990e307 LW |
829 | break; |
830 | } | |
831 | } | |
832 | else { /* Someone has a claim on this, so abandon it. */ | |
7120cae1 AL |
833 | const U32 padflags |
834 | = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP); | |
8990e307 LW |
835 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
836 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; | |
837 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; | |
133cdda0 | 838 | default: *(SV**)ptr = newSV(0); break; |
8990e307 | 839 | } |
53868620 | 840 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
4aa0a1f7 | 841 | SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */ |
8990e307 LW |
842 | } |
843 | break; | |
844 | case SAVEt_DELETE: | |
845 | ptr = SSPOPPTR; | |
846 | hv = (HV*)ptr; | |
847 | ptr = SSPOPPTR; | |
5100483f | 848 | (void)hv_delete(hv, (char*)ptr, (I32)SSPOPINT, G_DISCARD); |
4e4c362e | 849 | SvREFCNT_dec(hv); |
8aacddc1 | 850 | Safefree(ptr); |
8990e307 | 851 | break; |
146174a9 CB |
852 | case SAVEt_DESTRUCTOR_X: |
853 | ptr = SSPOPPTR; | |
acfe0abc | 854 | (*SSPOPDXPTR)(aTHX_ ptr); |
a0d0e21e LW |
855 | break; |
856 | case SAVEt_REGCONTEXT: | |
455ece5e | 857 | case SAVEt_ALLOC: |
161b7d16 | 858 | i = SSPOPINT; |
3280af22 | 859 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e | 860 | break; |
55497cff | 861 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 | 862 | i = SSPOPINT; |
3280af22 | 863 | PL_stack_sp = PL_stack_base + i; |
55497cff | 864 | break; |
bf9e0bfe NC |
865 | case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */ |
866 | i = SSPOPINT; | |
867 | cxstack[i].blk_oldsp = SSPOPINT; | |
868 | break; | |
161b7d16 SM |
869 | case SAVEt_AELEM: /* array element */ |
870 | value = (SV*)SSPOPPTR; | |
871 | i = SSPOPINT; | |
872 | av = (AV*)SSPOPPTR; | |
9039bfa6 | 873 | ptr = av_fetch(av,i,1); |
13057ebc DM |
874 | if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */ |
875 | SvREFCNT_dec(value); | |
4e4c362e GS |
876 | if (ptr) { |
877 | sv = *(SV**)ptr; | |
3280af22 | 878 | if (sv && sv != &PL_sv_undef) { |
14befaf4 | 879 | if (SvTIED_mg((SV*)av, PERL_MAGIC_tied)) |
be2d5e07 | 880 | SvREFCNT_inc_void_NN(sv); |
4e4c362e GS |
881 | goto restore_sv; |
882 | } | |
883 | } | |
884 | SvREFCNT_dec(av); | |
885 | SvREFCNT_dec(value); | |
886 | break; | |
161b7d16 SM |
887 | case SAVEt_HELEM: /* hash element */ |
888 | value = (SV*)SSPOPPTR; | |
9002cb76 | 889 | sv = (SV*)SSPOPPTR; |
161b7d16 SM |
890 | hv = (HV*)SSPOPPTR; |
891 | ptr = hv_fetch_ent(hv, sv, 1, 0); | |
4e4c362e | 892 | if (ptr) { |
7120cae1 | 893 | const SV * const oval = HeVAL((HE*)ptr); |
3280af22 | 894 | if (oval && oval != &PL_sv_undef) { |
4e4c362e | 895 | ptr = &HeVAL((HE*)ptr); |
14befaf4 | 896 | if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) |
be2d5e07 | 897 | SvREFCNT_inc_void(*(SV**)ptr); |
4e4c362e | 898 | SvREFCNT_dec(sv); |
13057ebc | 899 | av = (AV*)hv; /* what to refcnt_dec */ |
4e4c362e GS |
900 | goto restore_sv; |
901 | } | |
902 | } | |
903 | SvREFCNT_dec(hv); | |
904 | SvREFCNT_dec(sv); | |
905 | SvREFCNT_dec(value); | |
906 | break; | |
462e5cf6 | 907 | case SAVEt_OP: |
533c011a | 908 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 | 909 | break; |
25eaa213 | 910 | case SAVEt_HINTS: |
045ac317 RGS |
911 | if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) { |
912 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); | |
913 | GvHV(PL_hintgv) = NULL; | |
914 | } | |
3280af22 | 915 | *(I32*)&PL_hints = (I32)SSPOPINT; |
1f26b251 NC |
916 | if (PL_hints & HINT_LOCALIZE_HH) { |
917 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); | |
918 | GvHV(PL_hintgv) = (HV*)SSPOPPTR; | |
919 | } | |
920 | ||
b3ac6de7 | 921 | break; |
cb50131a | 922 | case SAVEt_COMPPAD: |
d7afa7f5 | 923 | PL_comppad = (PAD*)SSPOPPTR; |
c2ef0052 | 924 | if (PL_comppad) |
cb50131a CB |
925 | PL_curpad = AvARRAY(PL_comppad); |
926 | else | |
0e2d6244 | 927 | PL_curpad = NULL; |
cb50131a | 928 | break; |
c3564e5c GS |
929 | case SAVEt_PADSV: |
930 | { | |
7120cae1 | 931 | const PADOFFSET off = (PADOFFSET)SSPOPLONG; |
c3564e5c GS |
932 | ptr = SSPOPPTR; |
933 | if (ptr) | |
d7afa7f5 | 934 | AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR; |
c3564e5c GS |
935 | } |
936 | break; | |
240fcc4a JC |
937 | case SAVEt_SAVESWITCHSTACK: |
938 | { | |
939 | dSP; | |
6d29369a AL |
940 | AV* const t = (AV*)SSPOPPTR; |
941 | AV* const f = (AV*)SSPOPPTR; | |
240fcc4a JC |
942 | SWITCHSTACK(t,f); |
943 | PL_curstackinfo->si_stack = f; | |
944 | } | |
945 | break; | |
c01caf97 NC |
946 | /* These are only saved in mathoms.c */ |
947 | case SAVEt_SVREF: /* scalar reference */ | |
948 | value = (SV*)SSPOPPTR; | |
949 | ptr = SSPOPPTR; | |
950 | av = NULL; /* what to refcnt_dec */ | |
951 | goto restore_sv; | |
952 | case SAVEt_LONG: /* long reference */ | |
953 | ptr = SSPOPPTR; | |
954 | *(long*)ptr = (long)SSPOPLONG; | |
955 | break; | |
956 | case SAVEt_I16: /* I16 reference */ | |
957 | ptr = SSPOPPTR; | |
958 | *(I16*)ptr = (I16)SSPOPINT; | |
959 | break; | |
960 | case SAVEt_I8: /* I8 reference */ | |
961 | ptr = SSPOPPTR; | |
962 | *(I8*)ptr = (I8)SSPOPINT; | |
963 | break; | |
964 | case SAVEt_IV: /* IV reference */ | |
965 | ptr = SSPOPPTR; | |
966 | *(IV*)ptr = (IV)SSPOPIV; | |
967 | break; | |
968 | case SAVEt_NSTAB: | |
969 | gv = (GV*)SSPOPPTR; | |
970 | (void)sv_clear((SV*)gv); | |
971 | break; | |
972 | case SAVEt_DESTRUCTOR: | |
973 | ptr = SSPOPPTR; | |
974 | (*SSPOPDPTR)(ptr); | |
975 | break; | |
2cb86c03 NC |
976 | case SAVEt_COP_ARYBASE: |
977 | ptr = SSPOPPTR; | |
978 | i = SSPOPINT; | |
979 | CopARYBASE_set((COP *)ptr, i); | |
980 | break; | |
4c49a5e0 NC |
981 | case SAVEt_RE_STATE: |
982 | { | |
983 | const struct re_save_state *const state | |
984 | = (struct re_save_state *) | |
985 | (PL_savestack + PL_savestack_ix | |
986 | - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE); | |
987 | PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE; | |
988 | ||
989 | PL_reg_flags = state->re_state_reg_flags; | |
990 | PL_bostr = state->re_state_bostr; | |
991 | PL_reginput = state->re_state_reginput; | |
992 | PL_regbol = state->re_state_regbol; | |
993 | PL_regeol = state->re_state_regeol; | |
994 | PL_regstartp = state->re_state_regstartp; | |
995 | PL_regendp = state->re_state_regendp; | |
996 | PL_reglastparen = state->re_state_reglastparen; | |
997 | PL_reglastcloseparen = state->re_state_reglastcloseparen; | |
998 | PL_regtill = state->re_state_regtill; | |
999 | if (PL_reg_start_tmp != state->re_state_reg_start_tmp) { | |
1000 | Safefree(PL_reg_start_tmp); | |
1001 | PL_reg_start_tmp = state->re_state_reg_start_tmp; | |
1002 | } | |
1003 | PL_reg_start_tmpl = state->re_state_reg_start_tmpl; | |
1004 | PL_reg_eval_set = state->re_state_reg_eval_set; | |
1005 | PL_regnarrate = state->re_state_regnarrate; | |
1006 | PL_regindent = state->re_state_regindent; | |
1007 | PL_reg_call_cc = state->re_state_reg_call_cc; | |
1008 | PL_reg_re = state->re_state_reg_re; | |
1009 | PL_reg_ganch = state->re_state_reg_ganch; | |
1010 | PL_reg_sv = state->re_state_reg_sv; | |
1011 | PL_reg_match_utf8 = state->re_state_reg_match_utf8; | |
1012 | PL_reg_magic = state->re_state_reg_magic; | |
1013 | PL_reg_oldpos = state->re_state_reg_oldpos; | |
1014 | PL_reg_oldcurpm = state->re_state_reg_oldcurpm; | |
1015 | PL_reg_curpm = state->re_state_reg_curpm; | |
1016 | PL_reg_oldsaved = state->re_state_reg_oldsaved; | |
1017 | PL_reg_oldsavedlen = state->re_state_reg_oldsavedlen; | |
1018 | PL_reg_maxiter = state->re_state_reg_maxiter; | |
1019 | PL_reg_leftiter = state->re_state_reg_leftiter; | |
1020 | if (PL_reg_poscache != state->re_state_reg_poscache) { | |
1021 | Safefree(PL_reg_poscache); | |
1022 | PL_reg_poscache = state->re_state_reg_poscache; | |
1023 | } | |
1024 | PL_reg_poscache_size = state->re_state_reg_poscache_size; | |
1025 | PL_regsize = state->re_state_regsize; | |
1026 | PL_reg_starttry = state->re_state_reg_starttry; | |
1027 | ||
1028 | /* These variables have been eliminated from 5.10: */ | |
1029 | PL_regdata = state->re_state_regdata; | |
1030 | PL_regprogram = state->re_state_regprogram; | |
1031 | PL_regcc = state->re_state_regcc; | |
1032 | PL_regprecomp = state->re_state_regprecomp; | |
1033 | PL_regnpar = state->re_state_regnpar; | |
1034 | } | |
1035 | break; | |
79072805 | 1036 | default: |
cea2e8a9 | 1037 | Perl_croak(aTHX_ "panic: leave_scope inconsistency"); |
79072805 LW |
1038 | } |
1039 | } | |
1040 | } | |
8990e307 | 1041 | |
8990e307 | 1042 | void |
864dbfa3 | 1043 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
8990e307 | 1044 | { |
35ff7856 | 1045 | #ifdef DEBUGGING |
22c35a8c | 1046 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 | 1047 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 | 1048 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
146174a9 CB |
1049 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n", |
1050 | PTR2UV(cx->blk_oldcop)); | |
760ac839 LW |
1051 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
1052 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); | |
1053 | PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp); | |
146174a9 CB |
1054 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n", |
1055 | PTR2UV(cx->blk_oldpm)); | |
760ac839 | 1056 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 | 1057 | } |
6b35e009 | 1058 | switch (CxTYPE(cx)) { |
8990e307 LW |
1059 | case CXt_NULL: |
1060 | case CXt_BLOCK: | |
1061 | break; | |
146174a9 CB |
1062 | case CXt_FORMAT: |
1063 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", | |
1064 | PTR2UV(cx->blk_sub.cv)); | |
1065 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n", | |
1066 | PTR2UV(cx->blk_sub.gv)); | |
1067 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n", | |
1068 | PTR2UV(cx->blk_sub.dfoutgv)); | |
1069 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", | |
1070 | (int)cx->blk_sub.hasargs); | |
1071 | break; | |
8990e307 | 1072 | case CXt_SUB: |
146174a9 CB |
1073 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1074 | PTR2UV(cx->blk_sub.cv)); | |
760ac839 | 1075 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 | 1076 | (long)cx->blk_sub.olddepth); |
760ac839 | 1077 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 | 1078 | (int)cx->blk_sub.hasargs); |
146174a9 CB |
1079 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", |
1080 | (int)cx->blk_sub.lval); | |
8990e307 LW |
1081 | break; |
1082 | case CXt_EVAL: | |
760ac839 | 1083 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 | 1084 | (long)cx->blk_eval.old_in_eval); |
760ac839 | 1085 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
22c35a8c GS |
1086 | PL_op_name[cx->blk_eval.old_op_type], |
1087 | PL_op_desc[cx->blk_eval.old_op_type]); | |
0f79a09d GS |
1088 | if (cx->blk_eval.old_namesv) |
1089 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", | |
fdac8c4b | 1090 | SvPVX_const(cx->blk_eval.old_namesv)); |
146174a9 CB |
1091 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n", |
1092 | PTR2UV(cx->blk_eval.old_eval_root)); | |
8990e307 LW |
1093 | break; |
1094 | ||
1095 | case CXt_LOOP: | |
760ac839 | 1096 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 | 1097 | cx->blk_loop.label); |
760ac839 | 1098 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 | 1099 | (long)cx->blk_loop.resetsp); |
146174a9 CB |
1100 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n", |
1101 | PTR2UV(cx->blk_loop.redo_op)); | |
1102 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n", | |
1103 | PTR2UV(cx->blk_loop.next_op)); | |
1104 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n", | |
1105 | PTR2UV(cx->blk_loop.last_op)); | |
760ac839 | 1106 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 | 1107 | (long)cx->blk_loop.iterix); |
146174a9 CB |
1108 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n", |
1109 | PTR2UV(cx->blk_loop.iterary)); | |
1110 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n", | |
1111 | PTR2UV(CxITERVAR(cx))); | |
1112 | if (CxITERVAR(cx)) | |
1113 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n", | |
1114 | PTR2UV(cx->blk_loop.itersave)); | |
1115 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n", | |
1116 | PTR2UV(cx->blk_loop.iterlval)); | |
8990e307 LW |
1117 | break; |
1118 | ||
1119 | case CXt_SUBST: | |
760ac839 | 1120 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 | 1121 | (long)cx->sb_iters); |
760ac839 | 1122 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 | 1123 | (long)cx->sb_maxiters); |
35ef4773 GS |
1124 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
1125 | (long)cx->sb_rflags); | |
760ac839 | 1126 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 | 1127 | (long)cx->sb_once); |
760ac839 | 1128 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 | 1129 | cx->sb_orig); |
146174a9 CB |
1130 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n", |
1131 | PTR2UV(cx->sb_dstr)); | |
1132 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n", | |
1133 | PTR2UV(cx->sb_targ)); | |
1134 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n", | |
1135 | PTR2UV(cx->sb_s)); | |
1136 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n", | |
1137 | PTR2UV(cx->sb_m)); | |
1138 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n", | |
1139 | PTR2UV(cx->sb_strend)); | |
1140 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n", | |
1141 | PTR2UV(cx->sb_rxres)); | |
8990e307 LW |
1142 | break; |
1143 | } | |
5d1954da | 1144 | #else |
1e7ed80e | 1145 | PERL_UNUSED_CONTEXT; |
5d1954da | 1146 | PERL_UNUSED_ARG(cx); |
17c3b450 | 1147 | #endif /* DEBUGGING */ |
35ff7856 | 1148 | } |
583439ab NC |
1149 | |
1150 | /* | |
1151 | * Local variables: | |
1152 | * c-indentation-style: bsd | |
1153 | * c-basic-offset: 4 | |
1154 | * indent-tabs-mode: t | |
1155 | * End: | |
1156 | * | |
d8294a4d NC |
1157 | * ex: set ts=8 sts=4 sw=4 noet: |
1158 | */ |