Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* scope.c |
79072805 | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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 | /* | |
4ac71550 TC |
12 | * For the fashion of Minas Tirith was such that it was built on seven |
13 | * levels... | |
14 | * | |
15 | * [p.751 of _The Lord of the Rings_, V/i: "Minas Tirith"] | |
79072805 LW |
16 | */ |
17 | ||
ddfa107c | 18 | /* This file contains functions to manipulate several of Perl's stacks; |
166f8a29 DM |
19 | * in particular it contains code to push various types of things onto |
20 | * the savestack, then to pop them off and perform the correct restorative | |
21 | * action for each one. This corresponds to the cleanup Perl does at | |
22 | * each scope exit. | |
23 | */ | |
24 | ||
79072805 | 25 | #include "EXTERN.h" |
864dbfa3 | 26 | #define PERL_IN_SCOPE_C |
79072805 LW |
27 | #include "perl.h" |
28 | ||
a0d0e21e | 29 | SV** |
864dbfa3 | 30 | Perl_stack_grow(pTHX_ SV **sp, SV **p, int n) |
a0d0e21e | 31 | { |
97aff369 | 32 | dVAR; |
7918f24d NC |
33 | |
34 | PERL_ARGS_ASSERT_STACK_GROW; | |
35 | ||
3280af22 | 36 | PL_stack_sp = sp; |
2ce36478 | 37 | #ifndef STRESS_REALLOC |
3280af22 | 38 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128); |
2ce36478 | 39 | #else |
6b88bc9c | 40 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1); |
2ce36478 | 41 | #endif |
3280af22 | 42 | return PL_stack_sp; |
a0d0e21e LW |
43 | } |
44 | ||
2ce36478 SM |
45 | #ifndef STRESS_REALLOC |
46 | #define GROW(old) ((old) * 3 / 2) | |
47 | #else | |
48 | #define GROW(old) ((old) + 1) | |
49 | #endif | |
50 | ||
e336de0d | 51 | PERL_SI * |
864dbfa3 | 52 | Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems) |
e336de0d | 53 | { |
97aff369 | 54 | dVAR; |
e336de0d | 55 | PERL_SI *si; |
a02a5408 | 56 | Newx(si, 1, PERL_SI); |
e336de0d GS |
57 | si->si_stack = newAV(); |
58 | AvREAL_off(si->si_stack); | |
59 | av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0); | |
3280af22 | 60 | AvALLOC(si->si_stack)[0] = &PL_sv_undef; |
e336de0d GS |
61 | AvFILLp(si->si_stack) = 0; |
62 | si->si_prev = 0; | |
63 | si->si_next = 0; | |
64 | si->si_cxmax = cxitems - 1; | |
65 | si->si_cxix = -1; | |
e788e7d3 | 66 | si->si_type = PERLSI_UNDEF; |
a02a5408 | 67 | Newx(si->si_cxstack, cxitems, PERL_CONTEXT); |
9965345d JH |
68 | /* Without any kind of initialising PUSHSUBST() |
69 | * in pp_subst() will read uninitialised heap. */ | |
7e337ee0 | 70 | PoisonNew(si->si_cxstack, cxitems, PERL_CONTEXT); |
e336de0d GS |
71 | return si; |
72 | } | |
73 | ||
79072805 | 74 | I32 |
864dbfa3 | 75 | Perl_cxinc(pTHX) |
79072805 | 76 | { |
97aff369 | 77 | dVAR; |
a3b680e6 | 78 | const IV old_max = cxstack_max; |
2ce36478 | 79 | cxstack_max = GROW(cxstack_max); |
c09156bb | 80 | Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */ |
9965345d JH |
81 | /* Without any kind of initialising deep enough recursion |
82 | * will end up reading uninitialised PERL_CONTEXTs. */ | |
7e337ee0 | 83 | PoisonNew(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT); |
79072805 LW |
84 | return cxstack_ix + 1; |
85 | } | |
86 | ||
79072805 | 87 | void |
864dbfa3 | 88 | Perl_push_scope(pTHX) |
79072805 | 89 | { |
97aff369 | 90 | dVAR; |
3280af22 NIS |
91 | if (PL_scopestack_ix == PL_scopestack_max) { |
92 | PL_scopestack_max = GROW(PL_scopestack_max); | |
93 | Renew(PL_scopestack, PL_scopestack_max, I32); | |
d343c3ef GG |
94 | #ifdef DEBUGGING |
95 | Renew(PL_scopestack_name, PL_scopestack_max, const char*); | |
520bb150 | 96 | #endif |
79072805 | 97 | } |
d343c3ef GG |
98 | #ifdef DEBUGGING |
99 | PL_scopestack_name[PL_scopestack_ix] = "unknown"; | |
100 | #endif | |
3280af22 | 101 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 LW |
102 | |
103 | } | |
104 | ||
105 | void | |
864dbfa3 | 106 | Perl_pop_scope(pTHX) |
79072805 | 107 | { |
97aff369 | 108 | dVAR; |
35a4481c | 109 | const I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 | 110 | LEAVE_SCOPE(oldsave); |
79072805 LW |
111 | } |
112 | ||
113 | void | |
864dbfa3 | 114 | Perl_markstack_grow(pTHX) |
a0d0e21e | 115 | { |
97aff369 | 116 | dVAR; |
35a4481c AL |
117 | const I32 oldmax = PL_markstack_max - PL_markstack; |
118 | const I32 newmax = GROW(oldmax); | |
a0d0e21e | 119 | |
3280af22 NIS |
120 | Renew(PL_markstack, newmax, I32); |
121 | PL_markstack_ptr = PL_markstack + oldmax; | |
122 | PL_markstack_max = PL_markstack + newmax; | |
a0d0e21e LW |
123 | } |
124 | ||
125 | void | |
864dbfa3 | 126 | Perl_savestack_grow(pTHX) |
79072805 | 127 | { |
97aff369 | 128 | dVAR; |
8aacddc1 | 129 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
3280af22 | 130 | Renew(PL_savestack, PL_savestack_max, ANY); |
79072805 LW |
131 | } |
132 | ||
4b3c1a47 AE |
133 | void |
134 | Perl_savestack_grow_cnt(pTHX_ I32 need) | |
135 | { | |
97aff369 | 136 | dVAR; |
4b3c1a47 AE |
137 | PL_savestack_max = PL_savestack_ix + need; |
138 | Renew(PL_savestack, PL_savestack_max, ANY); | |
139 | } | |
140 | ||
2ce36478 SM |
141 | #undef GROW |
142 | ||
79072805 | 143 | void |
864dbfa3 | 144 | Perl_tmps_grow(pTHX_ I32 n) |
677b06e3 | 145 | { |
97aff369 | 146 | dVAR; |
677b06e3 GS |
147 | #ifndef STRESS_REALLOC |
148 | if (n < 128) | |
149 | n = (PL_tmps_max < 512) ? 128 : 512; | |
150 | #endif | |
151 | PL_tmps_max = PL_tmps_ix + n + 1; | |
152 | Renew(PL_tmps_stack, PL_tmps_max, SV*); | |
153 | } | |
154 | ||
155 | ||
156 | void | |
864dbfa3 | 157 | Perl_free_tmps(pTHX) |
79072805 | 158 | { |
97aff369 | 159 | dVAR; |
79072805 | 160 | /* XXX should tmps_floor live in cxstack? */ |
35a4481c | 161 | const I32 myfloor = PL_tmps_floor; |
3280af22 | 162 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
901017d6 | 163 | SV* const sv = PL_tmps_stack[PL_tmps_ix]; |
a0714e2c | 164 | PL_tmps_stack[PL_tmps_ix--] = NULL; |
8aacddc1 | 165 | if (sv && sv != &PL_sv_undef) { |
463ee0b2 | 166 | SvTEMP_off(sv); |
8990e307 | 167 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 | 168 | } |
79072805 LW |
169 | } |
170 | } | |
171 | ||
76e3520e | 172 | STATIC SV * |
af7df257 | 173 | S_save_scalar_at(pTHX_ SV **sptr, const U32 flags) |
79072805 | 174 | { |
97aff369 | 175 | dVAR; |
75d34a09 VP |
176 | SV * osv; |
177 | register SV *sv; | |
79072805 | 178 | |
7918f24d NC |
179 | PERL_ARGS_ASSERT_SAVE_SCALAR_AT; |
180 | ||
75d34a09 VP |
181 | osv = *sptr; |
182 | sv = (flags & SAVEf_KEEPOLDELEM) ? osv : (*sptr = newSV(0)); | |
183 | ||
a0d0e21e | 184 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
a0d0e21e | 185 | if (SvGMAGICAL(osv)) { |
35a4481c | 186 | const bool oldtainted = PL_tainted; |
a0d0e21e | 187 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
c268c2a6 | 188 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
3280af22 | 189 | PL_tainted = oldtainted; |
a0d0e21e | 190 | } |
75d34a09 VP |
191 | if (!(flags & SAVEf_KEEPOLDELEM)) |
192 | mg_localize(osv, sv, (flags & SAVEf_SETMAGIC) != 0); | |
79072805 | 193 | } |
75d34a09 | 194 | |
79072805 LW |
195 | return sv; |
196 | } | |
197 | ||
dfcd3de5 NC |
198 | void |
199 | Perl_save_pushptrptr(pTHX_ void *const ptr1, void *const ptr2, const int type) | |
e22024d3 NC |
200 | { |
201 | dVAR; | |
202 | SSCHECK(3); | |
203 | SSPUSHPTR(ptr1); | |
204 | SSPUSHPTR(ptr2); | |
205 | SSPUSHINT(type); | |
206 | } | |
207 | ||
7a4c00b4 | 208 | SV * |
864dbfa3 | 209 | Perl_save_scalar(pTHX_ GV *gv) |
7a4c00b4 | 210 | { |
97aff369 | 211 | dVAR; |
fb4fc1fa | 212 | SV ** const sptr = &GvSVn(gv); |
7918f24d NC |
213 | |
214 | PERL_ARGS_ASSERT_SAVE_SCALAR; | |
215 | ||
27cc343c | 216 | PL_localizing = 1; |
0cbee0a4 | 217 | SvGETMAGIC(*sptr); |
27cc343c | 218 | PL_localizing = 0; |
e22024d3 | 219 | save_pushptrptr(SvREFCNT_inc_simple(gv), SvREFCNT_inc(*sptr), SAVEt_SV); |
af7df257 | 220 | return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */ |
7a4c00b4 | 221 | } |
222 | ||
f4dd75d9 | 223 | /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to |
b9d12d37 GS |
224 | * restore a global SV to its prior contents, freeing new value. */ |
225 | void | |
864dbfa3 | 226 | Perl_save_generic_svref(pTHX_ SV **sptr) |
b9d12d37 | 227 | { |
97aff369 | 228 | dVAR; |
7918f24d NC |
229 | |
230 | PERL_ARGS_ASSERT_SAVE_GENERIC_SVREF; | |
231 | ||
e22024d3 | 232 | save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF); |
b9d12d37 GS |
233 | } |
234 | ||
f4dd75d9 GS |
235 | /* Like save_pptr(), but also Safefree()s the new value if it is different |
236 | * from the old one. Can be used to restore a global char* to its prior | |
237 | * contents, freeing new value. */ | |
238 | void | |
239 | Perl_save_generic_pvref(pTHX_ char **str) | |
240 | { | |
97aff369 | 241 | dVAR; |
7918f24d NC |
242 | |
243 | PERL_ARGS_ASSERT_SAVE_GENERIC_PVREF; | |
244 | ||
e22024d3 | 245 | save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF); |
f4dd75d9 GS |
246 | } |
247 | ||
05ec9bb3 NIS |
248 | /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree(). |
249 | * Can be used to restore a shared global char* to its prior | |
250 | * contents, freeing new value. */ | |
251 | void | |
252 | Perl_save_shared_pvref(pTHX_ char **str) | |
253 | { | |
97aff369 | 254 | dVAR; |
7918f24d NC |
255 | |
256 | PERL_ARGS_ASSERT_SAVE_SHARED_PVREF; | |
257 | ||
e22024d3 | 258 | save_pushptrptr(str, *str, SAVEt_SHARED_PVREF); |
05ec9bb3 NIS |
259 | } |
260 | ||
14f338dc DM |
261 | /* set the SvFLAGS specified by mask to the values in val */ |
262 | ||
263 | void | |
264 | Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val) | |
265 | { | |
97aff369 | 266 | dVAR; |
7918f24d NC |
267 | |
268 | PERL_ARGS_ASSERT_SAVE_SET_SVFLAGS; | |
269 | ||
14f338dc DM |
270 | SSCHECK(4); |
271 | SSPUSHPTR(sv); | |
272 | SSPUSHINT(mask); | |
273 | SSPUSHINT(val); | |
274 | SSPUSHINT(SAVEt_SET_SVFLAGS); | |
275 | } | |
276 | ||
79072805 | 277 | void |
864dbfa3 | 278 | Perl_save_gp(pTHX_ GV *gv, I32 empty) |
79072805 | 279 | { |
97aff369 | 280 | dVAR; |
7918f24d NC |
281 | |
282 | PERL_ARGS_ASSERT_SAVE_GP; | |
283 | ||
e22024d3 | 284 | save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP); |
79072805 | 285 | |
5f05dabc | 286 | if (empty) { |
12816592 | 287 | GP *gp = Perl_newGP(aTHX_ gv); |
146174a9 | 288 | |
fae75791 | 289 | if (GvCVu(gv)) |
e1a479c5 | 290 | mro_method_changed_in(GvSTASH(gv)); /* taking a method out of circulation ("local")*/ |
146174a9 CB |
291 | if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) { |
292 | gp->gp_io = newIO(); | |
293 | IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START; | |
294 | } | |
72651472 NC |
295 | #ifdef PERL_DONT_CREATE_GVSV |
296 | if (gv == PL_errgv) { | |
297 | /* We could scatter this logic everywhere by changing the | |
298 | definition of ERRSV from GvSV() to GvSVn(), but it seems more | |
299 | efficient to do this check once here. */ | |
300 | gp->gp_sv = newSV(0); | |
301 | } | |
302 | #endif | |
12816592 | 303 | GvGP(gv) = gp; |
5f05dabc | 304 | } |
305 | else { | |
44a8e56a | 306 | gp_ref(GvGP(gv)); |
5f05dabc | 307 | GvINTRO_on(gv); |
308 | } | |
79072805 | 309 | } |
79072805 | 310 | |
79072805 | 311 | AV * |
864dbfa3 | 312 | Perl_save_ary(pTHX_ GV *gv) |
79072805 | 313 | { |
97aff369 | 314 | dVAR; |
901017d6 | 315 | AV * const oav = GvAVn(gv); |
67a38de0 | 316 | AV *av; |
fb73857a | 317 | |
7918f24d NC |
318 | PERL_ARGS_ASSERT_SAVE_ARY; |
319 | ||
67a38de0 NIS |
320 | if (!AvREAL(oav) && AvREIFY(oav)) |
321 | av_reify(oav); | |
e22024d3 | 322 | save_pushptrptr(gv, oav, SAVEt_AV); |
79072805 | 323 | |
4608196e | 324 | GvAV(gv) = NULL; |
fb73857a | 325 | av = GvAVn(gv); |
0cbee0a4 | 326 | if (SvMAGIC(oav)) |
9711599e | 327 | mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE); |
fb73857a | 328 | return av; |
79072805 LW |
329 | } |
330 | ||
331 | HV * | |
864dbfa3 | 332 | Perl_save_hash(pTHX_ GV *gv) |
79072805 | 333 | { |
97aff369 | 334 | dVAR; |
fb73857a | 335 | HV *ohv, *hv; |
336 | ||
7918f24d NC |
337 | PERL_ARGS_ASSERT_SAVE_HASH; |
338 | ||
e22024d3 | 339 | save_pushptrptr(gv, (ohv = GvHVn(gv)), SAVEt_HV); |
79072805 | 340 | |
4608196e | 341 | GvHV(gv) = NULL; |
fb73857a | 342 | hv = GvHVn(gv); |
0cbee0a4 | 343 | if (SvMAGIC(ohv)) |
9711599e | 344 | mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE); |
fb73857a | 345 | return hv; |
79072805 LW |
346 | } |
347 | ||
348 | void | |
864dbfa3 | 349 | Perl_save_item(pTHX_ register SV *item) |
79072805 | 350 | { |
97aff369 | 351 | dVAR; |
901017d6 | 352 | register SV * const sv = newSVsv(item); |
79072805 | 353 | |
7918f24d NC |
354 | PERL_ARGS_ASSERT_SAVE_ITEM; |
355 | ||
e22024d3 NC |
356 | save_pushptrptr(item, /* remember the pointer */ |
357 | sv, /* remember the value */ | |
358 | SAVEt_ITEM); | |
79072805 LW |
359 | } |
360 | ||
361 | void | |
1409bc06 | 362 | Perl_save_bool(pTHX_ bool *boolp) |
79072805 | 363 | { |
97aff369 | 364 | dVAR; |
7918f24d | 365 | |
1409bc06 | 366 | PERL_ARGS_ASSERT_SAVE_BOOL; |
7918f24d | 367 | |
79072805 | 368 | SSCHECK(3); |
1409bc06 NC |
369 | SSPUSHBOOL(*boolp); |
370 | SSPUSHPTR(boolp); | |
371 | SSPUSHINT(SAVEt_BOOL); | |
372 | } | |
373 | ||
7623d426 NC |
374 | void |
375 | Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type) | |
1409bc06 NC |
376 | { |
377 | dVAR; | |
378 | SSCHECK(3); | |
379 | SSPUSHINT(i); | |
380 | SSPUSHPTR(ptr); | |
381 | SSPUSHINT(type); | |
79072805 LW |
382 | } |
383 | ||
384 | void | |
1409bc06 | 385 | Perl_save_int(pTHX_ int *intp) |
9febdf04 | 386 | { |
97aff369 | 387 | dVAR; |
7918f24d | 388 | |
1409bc06 | 389 | PERL_ARGS_ASSERT_SAVE_INT; |
7918f24d | 390 | |
1409bc06 | 391 | save_pushi32ptr(*intp, intp, SAVEt_INT); |
9febdf04 RH |
392 | } |
393 | ||
394 | void | |
58188858 RGS |
395 | Perl_save_I8(pTHX_ I8 *bytep) |
396 | { | |
397 | dVAR; | |
7918f24d NC |
398 | |
399 | PERL_ARGS_ASSERT_SAVE_I8; | |
400 | ||
1409bc06 | 401 | save_pushi32ptr(*bytep, bytep, SAVEt_I8); |
58188858 RGS |
402 | } |
403 | ||
404 | void | |
87a84751 JH |
405 | Perl_save_I16(pTHX_ I16 *intp) |
406 | { | |
407 | dVAR; | |
7918f24d NC |
408 | |
409 | PERL_ARGS_ASSERT_SAVE_I16; | |
410 | ||
1409bc06 | 411 | save_pushi32ptr(*intp, intp, SAVEt_I16); |
87a84751 JH |
412 | } |
413 | ||
414 | void | |
864dbfa3 | 415 | Perl_save_I32(pTHX_ I32 *intp) |
79072805 | 416 | { |
97aff369 | 417 | dVAR; |
7918f24d NC |
418 | |
419 | PERL_ARGS_ASSERT_SAVE_I32; | |
420 | ||
1409bc06 | 421 | save_pushi32ptr(*intp, intp, SAVEt_I32); |
79072805 LW |
422 | } |
423 | ||
85e6fe83 LW |
424 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
425 | * force word-alignment and we'll miss the pointer. | |
426 | */ | |
427 | void | |
864dbfa3 | 428 | Perl_save_pptr(pTHX_ char **pptr) |
85e6fe83 | 429 | { |
97aff369 | 430 | dVAR; |
7918f24d NC |
431 | |
432 | PERL_ARGS_ASSERT_SAVE_PPTR; | |
433 | ||
e22024d3 | 434 | save_pushptrptr(*pptr, pptr, SAVEt_PPTR); |
85e6fe83 LW |
435 | } |
436 | ||
79072805 | 437 | void |
146174a9 CB |
438 | Perl_save_vptr(pTHX_ void *ptr) |
439 | { | |
97aff369 | 440 | dVAR; |
7918f24d NC |
441 | |
442 | PERL_ARGS_ASSERT_SAVE_VPTR; | |
443 | ||
e22024d3 | 444 | save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR); |
146174a9 CB |
445 | } |
446 | ||
447 | void | |
864dbfa3 | 448 | Perl_save_sptr(pTHX_ SV **sptr) |
79072805 | 449 | { |
97aff369 | 450 | dVAR; |
7918f24d NC |
451 | |
452 | PERL_ARGS_ASSERT_SAVE_SPTR; | |
453 | ||
e22024d3 | 454 | save_pushptrptr(*sptr, sptr, SAVEt_SPTR); |
79072805 LW |
455 | } |
456 | ||
c3564e5c | 457 | void |
09edbca0 | 458 | Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off) |
c3564e5c | 459 | { |
97aff369 | 460 | dVAR; |
c3564e5c | 461 | SSCHECK(4); |
f3548bdc | 462 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
09edbca0 | 463 | SSPUSHPTR(SvREFCNT_inc_simple_NN(PL_curpad[off])); |
f3548bdc | 464 | SSPUSHPTR(PL_comppad); |
c3564e5c | 465 | SSPUSHLONG((long)off); |
09edbca0 | 466 | SSPUSHINT(SAVEt_PADSV_AND_MORTALIZE); |
c3564e5c GS |
467 | } |
468 | ||
79072805 | 469 | void |
864dbfa3 | 470 | Perl_save_hptr(pTHX_ HV **hptr) |
79072805 | 471 | { |
97aff369 | 472 | dVAR; |
7918f24d NC |
473 | |
474 | PERL_ARGS_ASSERT_SAVE_HPTR; | |
475 | ||
e22024d3 | 476 | save_pushptrptr(*hptr, hptr, SAVEt_HPTR); |
79072805 LW |
477 | } |
478 | ||
479 | void | |
864dbfa3 | 480 | Perl_save_aptr(pTHX_ AV **aptr) |
79072805 | 481 | { |
97aff369 | 482 | dVAR; |
7918f24d NC |
483 | |
484 | PERL_ARGS_ASSERT_SAVE_APTR; | |
485 | ||
e22024d3 | 486 | save_pushptrptr(*aptr, aptr, SAVEt_APTR); |
79072805 LW |
487 | } |
488 | ||
489 | void | |
2fd8beea | 490 | Perl_save_pushptr(pTHX_ void *const ptr, const int type) |
8990e307 | 491 | { |
97aff369 | 492 | dVAR; |
8990e307 | 493 | SSCHECK(2); |
2fd8beea NC |
494 | SSPUSHPTR(ptr); |
495 | SSPUSHINT(type); | |
8990e307 LW |
496 | } |
497 | ||
498 | void | |
864dbfa3 | 499 | Perl_save_clearsv(pTHX_ SV **svp) |
8990e307 | 500 | { |
97aff369 | 501 | dVAR; |
7918f24d NC |
502 | |
503 | PERL_ARGS_ASSERT_SAVE_CLEARSV; | |
504 | ||
f3548bdc | 505 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
8990e307 | 506 | SSCHECK(2); |
3280af22 | 507 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 | 508 | SSPUSHINT(SAVEt_CLEARSV); |
d9d18af6 | 509 | SvPADSTALE_off(*svp); /* mark lexical as active */ |
8990e307 LW |
510 | } |
511 | ||
512 | void | |
864dbfa3 | 513 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
8990e307 | 514 | { |
97aff369 | 515 | dVAR; |
7918f24d NC |
516 | |
517 | PERL_ARGS_ASSERT_SAVE_DELETE; | |
518 | ||
85a721ca | 519 | save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE); |
8990e307 LW |
520 | } |
521 | ||
522 | void | |
af097752 VP |
523 | Perl_save_hdelete(pTHX_ HV *hv, SV *keysv) |
524 | { | |
525 | STRLEN len; | |
526 | I32 klen; | |
527 | const char *key; | |
528 | ||
529 | PERL_ARGS_ASSERT_SAVE_HDELETE; | |
530 | ||
531 | key = SvPV_const(keysv, len); | |
532 | klen = SvUTF8(keysv) ? -(I32)len : (I32)len; | |
533 | SvREFCNT_inc_simple_void_NN(hv); | |
534 | save_pushptri32ptr(savepvn(key, len), klen, hv, SAVEt_DELETE); | |
535 | } | |
536 | ||
537 | void | |
c68ec7a9 VP |
538 | Perl_save_adelete(pTHX_ AV *av, I32 key) |
539 | { | |
540 | dVAR; | |
541 | ||
542 | PERL_ARGS_ASSERT_SAVE_ADELETE; | |
543 | ||
544 | SvREFCNT_inc_void(av); | |
545 | save_pushi32ptr(key, av, SAVEt_ADELETE); | |
546 | } | |
547 | ||
548 | void | |
12ab1f58 JH |
549 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
550 | { | |
551 | dVAR; | |
7918f24d NC |
552 | |
553 | PERL_ARGS_ASSERT_SAVE_DESTRUCTOR; | |
554 | ||
12ab1f58 JH |
555 | SSCHECK(3); |
556 | SSPUSHDPTR(f); | |
557 | SSPUSHPTR(p); | |
558 | SSPUSHINT(SAVEt_DESTRUCTOR); | |
559 | } | |
560 | ||
561 | void | |
146174a9 CB |
562 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
563 | { | |
97aff369 | 564 | dVAR; |
146174a9 CB |
565 | SSCHECK(3); |
566 | SSPUSHDXPTR(f); | |
567 | SSPUSHPTR(p); | |
568 | SSPUSHINT(SAVEt_DESTRUCTOR_X); | |
569 | } | |
570 | ||
571 | void | |
da8315f8 NC |
572 | Perl_save_hints(pTHX) |
573 | { | |
574 | dVAR; | |
575 | if (PL_compiling.cop_hints_hash) { | |
576 | HINTS_REFCNT_LOCK; | |
577 | PL_compiling.cop_hints_hash->refcounted_he_refcnt++; | |
578 | HINTS_REFCNT_UNLOCK; | |
579 | } | |
da8315f8 | 580 | if (PL_hints & HINT_LOCALIZE_HH) { |
be84297e NC |
581 | save_pushptri32ptr(GvHV(PL_hintgv), PL_hints, |
582 | PL_compiling.cop_hints_hash, SAVEt_HINTS); | |
da8315f8 | 583 | GvHV(PL_hintgv) = Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv)); |
be84297e NC |
584 | } else { |
585 | save_pushi32ptr(PL_hints, PL_compiling.cop_hints_hash, SAVEt_HINTS); | |
da8315f8 | 586 | } |
be84297e NC |
587 | } |
588 | ||
589 | static void | |
590 | S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2, | |
591 | const int type) | |
592 | { | |
593 | SSCHECK(4); | |
594 | SSPUSHPTR(ptr1); | |
595 | SSPUSHINT(i); | |
596 | SSPUSHPTR(ptr2); | |
597 | SSPUSHINT(type); | |
da8315f8 NC |
598 | } |
599 | ||
600 | void | |
91d1c79f | 601 | Perl_save_aelem_flags(pTHX_ AV *av, I32 idx, SV **sptr, const U32 flags) |
4e4c362e | 602 | { |
97aff369 | 603 | dVAR; |
bfc4de9f | 604 | SV *sv; |
7918f24d | 605 | |
91d1c79f | 606 | PERL_ARGS_ASSERT_SAVE_AELEM_FLAGS; |
7918f24d | 607 | |
0cbee0a4 | 608 | SvGETMAGIC(*sptr); |
be84297e NC |
609 | save_pushptri32ptr(SvREFCNT_inc_simple(av), idx, SvREFCNT_inc(*sptr), |
610 | SAVEt_AELEM); | |
5dd42e15 DM |
611 | /* if it gets reified later, the restore will have the wrong refcnt */ |
612 | if (!AvREAL(av) && AvREIFY(av)) | |
b37c2d43 | 613 | SvREFCNT_inc_void(*sptr); |
91d1c79f | 614 | save_scalar_at(sptr, flags); /* XXX - FIXME - see #60360 */ |
75d34a09 VP |
615 | if (flags & SAVEf_KEEPOLDELEM) |
616 | return; | |
bfc4de9f DM |
617 | sv = *sptr; |
618 | /* If we're localizing a tied array element, this new sv | |
619 | * won't actually be stored in the array - so it won't get | |
620 | * reaped when the localize ends. Ensure it gets reaped by | |
621 | * mortifying it instead. DAPM */ | |
622 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
623 | sv_2mortal(sv); | |
4e4c362e GS |
624 | } |
625 | ||
626 | void | |
af7df257 | 627 | Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags) |
4e4c362e | 628 | { |
97aff369 | 629 | dVAR; |
bfc4de9f | 630 | SV *sv; |
7918f24d | 631 | |
af7df257 | 632 | PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS; |
7918f24d | 633 | |
0cbee0a4 | 634 | SvGETMAGIC(*sptr); |
4e4c362e | 635 | SSCHECK(4); |
b37c2d43 | 636 | SSPUSHPTR(SvREFCNT_inc_simple(hv)); |
b2096149 | 637 | SSPUSHPTR(newSVsv(key)); |
4e4c362e GS |
638 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
639 | SSPUSHINT(SAVEt_HELEM); | |
af7df257 | 640 | save_scalar_at(sptr, flags); |
75d34a09 VP |
641 | if (flags & SAVEf_KEEPOLDELEM) |
642 | return; | |
bfc4de9f DM |
643 | sv = *sptr; |
644 | /* If we're localizing a tied hash element, this new sv | |
645 | * won't actually be stored in the hash - so it won't get | |
646 | * reaped when the localize ends. Ensure it gets reaped by | |
647 | * mortifying it instead. DAPM */ | |
648 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
649 | sv_2mortal(sv); | |
4e4c362e GS |
650 | } |
651 | ||
2053acbf NC |
652 | SV* |
653 | Perl_save_svref(pTHX_ SV **sptr) | |
654 | { | |
655 | dVAR; | |
7918f24d NC |
656 | |
657 | PERL_ARGS_ASSERT_SAVE_SVREF; | |
658 | ||
2053acbf | 659 | SvGETMAGIC(*sptr); |
e22024d3 | 660 | save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF); |
af7df257 | 661 | return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */ |
2053acbf NC |
662 | } |
663 | ||
455ece5e | 664 | I32 |
864dbfa3 | 665 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
455ece5e | 666 | { |
97aff369 | 667 | dVAR; |
35a4481c | 668 | register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
8aacddc1 | 669 | - (char*)PL_savestack); |
35a4481c | 670 | register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
455ece5e | 671 | |
1bb4c835 | 672 | SSGROW(elems + 2); |
455ece5e AD |
673 | |
674 | PL_savestack_ix += elems; | |
675 | SSPUSHINT(elems); | |
676 | SSPUSHINT(SAVEt_ALLOC); | |
677 | return start; | |
678 | } | |
679 | ||
462e5cf6 | 680 | void |
864dbfa3 | 681 | Perl_leave_scope(pTHX_ I32 base) |
79072805 | 682 | { |
97aff369 | 683 | dVAR; |
79072805 LW |
684 | register SV *sv; |
685 | register SV *value; | |
686 | register GV *gv; | |
687 | register AV *av; | |
688 | register HV *hv; | |
20454177 | 689 | void* ptr; |
f4dd75d9 | 690 | register char* str; |
161b7d16 | 691 | I32 i; |
302c0c93 NC |
692 | /* Localise the effects of the TAINT_NOT inside the loop. */ |
693 | const bool was = PL_tainted; | |
79072805 LW |
694 | |
695 | if (base < -1) | |
cea2e8a9 | 696 | Perl_croak(aTHX_ "panic: corrupt saved stack index"); |
3280af22 | 697 | while (PL_savestack_ix > base) { |
c6ae7647 NC |
698 | TAINT_NOT; |
699 | ||
79072805 LW |
700 | switch (SSPOPINT) { |
701 | case SAVEt_ITEM: /* normal string */ | |
ad64d0ec NC |
702 | value = MUTABLE_SV(SSPOPPTR); |
703 | sv = MUTABLE_SV(SSPOPPTR); | |
79072805 | 704 | sv_replace(sv,value); |
3280af22 | 705 | PL_localizing = 2; |
79072805 | 706 | SvSETMAGIC(sv); |
3280af22 | 707 | PL_localizing = 0; |
79072805 | 708 | break; |
8aacddc1 | 709 | case SAVEt_SV: /* scalar reference */ |
ad64d0ec | 710 | value = MUTABLE_SV(SSPOPPTR); |
159b6efe | 711 | gv = MUTABLE_GV(SSPOPPTR); |
7a4c00b4 | 712 | ptr = &GvSV(gv); |
502c6561 | 713 | av = MUTABLE_AV(gv); /* what to refcnt_dec */ |
2053acbf NC |
714 | restore_sv: |
715 | sv = *(SV**)ptr; | |
2053acbf NC |
716 | *(SV**)ptr = value; |
717 | SvREFCNT_dec(sv); | |
718 | PL_localizing = 2; | |
719 | SvSETMAGIC(value); | |
720 | PL_localizing = 0; | |
721 | SvREFCNT_dec(value); | |
722 | if (av) /* actually an av, hv or gv */ | |
723 | SvREFCNT_dec(av); | |
724 | break; | |
8aacddc1 | 725 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
f4dd75d9 | 726 | ptr = SSPOPPTR; |
b03d03b0 | 727 | str = (char*)SSPOPPTR; |
f4dd75d9 GS |
728 | if (*(char**)ptr != str) { |
729 | Safefree(*(char**)ptr); | |
730 | *(char**)ptr = str; | |
731 | } | |
732 | break; | |
05ec9bb3 NIS |
733 | case SAVEt_SHARED_PVREF: /* shared pv */ |
734 | str = (char*)SSPOPPTR; | |
735 | ptr = SSPOPPTR; | |
736 | if (*(char**)ptr != str) { | |
5e54c26f | 737 | #ifdef NETWARE |
9ecbcc42 | 738 | PerlMem_free(*(char**)ptr); |
5e54c26f | 739 | #else |
05ec9bb3 | 740 | PerlMemShared_free(*(char**)ptr); |
5e54c26f | 741 | #endif |
05ec9bb3 NIS |
742 | *(char**)ptr = str; |
743 | } | |
744 | break; | |
8aacddc1 | 745 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
ad64d0ec | 746 | value = MUTABLE_SV(SSPOPPTR); |
b9d12d37 | 747 | ptr = SSPOPPTR; |
f4dd75d9 GS |
748 | sv = *(SV**)ptr; |
749 | *(SV**)ptr = value; | |
750 | SvREFCNT_dec(sv); | |
b9d12d37 GS |
751 | SvREFCNT_dec(value); |
752 | break; | |
8aacddc1 | 753 | case SAVEt_AV: /* array reference */ |
502c6561 | 754 | av = MUTABLE_AV(SSPOPPTR); |
159b6efe | 755 | gv = MUTABLE_GV(SSPOPPTR); |
ef8d46e8 | 756 | SvREFCNT_dec(GvAV(gv)); |
8aacddc1 | 757 | GvAV(gv) = av; |
fb73857a | 758 | if (SvMAGICAL(av)) { |
3280af22 | 759 | PL_localizing = 2; |
ad64d0ec | 760 | SvSETMAGIC(MUTABLE_SV(av)); |
3280af22 | 761 | PL_localizing = 0; |
fb73857a | 762 | } |
8aacddc1 NIS |
763 | break; |
764 | case SAVEt_HV: /* hash reference */ | |
85fbaab2 | 765 | hv = MUTABLE_HV(SSPOPPTR); |
159b6efe | 766 | gv = MUTABLE_GV(SSPOPPTR); |
ef8d46e8 | 767 | SvREFCNT_dec(GvHV(gv)); |
8aacddc1 | 768 | GvHV(gv) = hv; |
fb73857a | 769 | if (SvMAGICAL(hv)) { |
3280af22 | 770 | PL_localizing = 2; |
ad64d0ec | 771 | SvSETMAGIC(MUTABLE_SV(hv)); |
3280af22 | 772 | PL_localizing = 0; |
fb73857a | 773 | } |
8aacddc1 | 774 | break; |
79072805 LW |
775 | case SAVEt_INT: /* int reference */ |
776 | ptr = SSPOPPTR; | |
777 | *(int*)ptr = (int)SSPOPINT; | |
778 | break; | |
9febdf04 RH |
779 | case SAVEt_BOOL: /* bool reference */ |
780 | ptr = SSPOPPTR; | |
781 | *(bool*)ptr = (bool)SSPOPBOOL; | |
782 | break; | |
79072805 LW |
783 | case SAVEt_I32: /* I32 reference */ |
784 | ptr = SSPOPPTR; | |
3235b7a3 NC |
785 | #ifdef PERL_DEBUG_READONLY_OPS |
786 | { | |
787 | const I32 val = SSPOPINT; | |
788 | if (*(I32*)ptr != val) | |
789 | *(I32*)ptr = val; | |
790 | } | |
791 | #else | |
79072805 | 792 | *(I32*)ptr = (I32)SSPOPINT; |
3235b7a3 | 793 | #endif |
79072805 LW |
794 | break; |
795 | case SAVEt_SPTR: /* SV* reference */ | |
796 | ptr = SSPOPPTR; | |
ad64d0ec | 797 | *(SV**)ptr = MUTABLE_SV(SSPOPPTR); |
79072805 | 798 | break; |
146174a9 | 799 | case SAVEt_VPTR: /* random* reference */ |
85e6fe83 LW |
800 | case SAVEt_PPTR: /* char* reference */ |
801 | ptr = SSPOPPTR; | |
802 | *(char**)ptr = (char*)SSPOPPTR; | |
803 | break; | |
79072805 LW |
804 | case SAVEt_HPTR: /* HV* reference */ |
805 | ptr = SSPOPPTR; | |
85fbaab2 | 806 | *(HV**)ptr = MUTABLE_HV(SSPOPPTR); |
79072805 LW |
807 | break; |
808 | case SAVEt_APTR: /* AV* reference */ | |
809 | ptr = SSPOPPTR; | |
502c6561 | 810 | *(AV**)ptr = MUTABLE_AV(SSPOPPTR); |
79072805 | 811 | break; |
fb73857a | 812 | case SAVEt_GP: /* scalar reference */ |
79072805 | 813 | ptr = SSPOPPTR; |
159b6efe | 814 | gv = MUTABLE_GV(SSPOPPTR); |
8aacddc1 NIS |
815 | gp_free(gv); |
816 | GvGP(gv) = (GP*)ptr; | |
dd69841b BB |
817 | /* putting a method back into circulation ("local")*/ |
818 | if (GvCVu(gv) && (hv=GvSTASH(gv)) && HvNAME_get(hv)) | |
819 | mro_method_changed_in(hv); | |
4633a7c4 | 820 | SvREFCNT_dec(gv); |
8aacddc1 | 821 | break; |
8990e307 LW |
822 | case SAVEt_FREESV: |
823 | ptr = SSPOPPTR; | |
ad64d0ec | 824 | SvREFCNT_dec(MUTABLE_SV(ptr)); |
8990e307 | 825 | break; |
26d9b02f JH |
826 | case SAVEt_MORTALIZESV: |
827 | ptr = SSPOPPTR; | |
ad64d0ec | 828 | sv_2mortal(MUTABLE_SV(ptr)); |
26d9b02f | 829 | break; |
8990e307 LW |
830 | case SAVEt_FREEOP: |
831 | ptr = SSPOPPTR; | |
f3548bdc | 832 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */ |
8990e307 LW |
833 | op_free((OP*)ptr); |
834 | break; | |
835 | case SAVEt_FREEPV: | |
836 | ptr = SSPOPPTR; | |
1df70142 | 837 | Safefree(ptr); |
8990e307 LW |
838 | break; |
839 | case SAVEt_CLEARSV: | |
3280af22 | 840 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 | 841 | sv = *(SV**)ptr; |
dd2155a4 DM |
842 | |
843 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, | |
f3548bdc DM |
844 | "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n", |
845 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), | |
846 | (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), | |
dd2155a4 DM |
847 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" |
848 | )); | |
849 | ||
bc44cdaf GS |
850 | /* Can clear pad variable in place? */ |
851 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { | |
8aacddc1 NIS |
852 | /* |
853 | * if a my variable that was made readonly is going out of | |
854 | * scope, we want to remove the readonlyness so that it can | |
855 | * go out of scope quietly | |
8aacddc1 | 856 | */ |
a26e96df | 857 | if (SvPADMY(sv) && !SvFAKE(sv)) |
8aacddc1 NIS |
858 | SvREADONLY_off(sv); |
859 | ||
6fc92669 | 860 | if (SvTHINKFIRST(sv)) |
840a7b70 | 861 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF); |
a0d0e21e LW |
862 | if (SvMAGICAL(sv)) |
863 | mg_free(sv); | |
8990e307 LW |
864 | |
865 | switch (SvTYPE(sv)) { | |
866 | case SVt_NULL: | |
867 | break; | |
868 | case SVt_PVAV: | |
502c6561 | 869 | av_clear(MUTABLE_AV(sv)); |
8990e307 LW |
870 | break; |
871 | case SVt_PVHV: | |
85fbaab2 | 872 | hv_clear(MUTABLE_HV(sv)); |
8990e307 LW |
873 | break; |
874 | case SVt_PVCV: | |
cea2e8a9 | 875 | Perl_croak(aTHX_ "panic: leave_scope pad code"); |
8990e307 | 876 | default: |
0c34ef67 | 877 | SvOK_off(sv); |
8990e307 LW |
878 | break; |
879 | } | |
d9d18af6 | 880 | SvPADSTALE_on(sv); /* mark as no longer live */ |
8990e307 LW |
881 | } |
882 | else { /* Someone has a claim on this, so abandon it. */ | |
35a4481c | 883 | const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP); |
8990e307 | 884 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
ad64d0ec NC |
885 | case SVt_PVAV: *(SV**)ptr = MUTABLE_SV(newAV()); break; |
886 | case SVt_PVHV: *(SV**)ptr = MUTABLE_SV(newHV()); break; | |
561b68a9 | 887 | default: *(SV**)ptr = newSV(0); break; |
8990e307 | 888 | } |
53868620 | 889 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
d9d18af6 DM |
890 | /* preserve pad nature, but also mark as not live |
891 | * for any closure capturing */ | |
2740392c | 892 | SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE; |
8990e307 LW |
893 | } |
894 | break; | |
895 | case SAVEt_DELETE: | |
896 | ptr = SSPOPPTR; | |
85fbaab2 | 897 | hv = MUTABLE_HV(ptr); |
35d4f826 | 898 | i = SSPOPINT; |
8990e307 | 899 | ptr = SSPOPPTR; |
35d4f826 | 900 | (void)hv_delete(hv, (char*)ptr, i, G_DISCARD); |
4e4c362e | 901 | SvREFCNT_dec(hv); |
8aacddc1 | 902 | Safefree(ptr); |
8990e307 | 903 | break; |
c68ec7a9 VP |
904 | case SAVEt_ADELETE: |
905 | ptr = SSPOPPTR; | |
906 | av = MUTABLE_AV(ptr); | |
907 | i = SSPOPINT; | |
908 | (void)av_delete(av, i, G_DISCARD); | |
909 | SvREFCNT_dec(av); | |
910 | break; | |
146174a9 CB |
911 | case SAVEt_DESTRUCTOR_X: |
912 | ptr = SSPOPPTR; | |
acfe0abc | 913 | (*SSPOPDXPTR)(aTHX_ ptr); |
a0d0e21e LW |
914 | break; |
915 | case SAVEt_REGCONTEXT: | |
455ece5e | 916 | case SAVEt_ALLOC: |
161b7d16 | 917 | i = SSPOPINT; |
3280af22 | 918 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e | 919 | break; |
55497cff | 920 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 | 921 | i = SSPOPINT; |
3280af22 | 922 | PL_stack_sp = PL_stack_base + i; |
55497cff | 923 | break; |
ea8d6ae1 DB |
924 | case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */ |
925 | i = SSPOPINT; | |
926 | cxstack[i].blk_oldsp = SSPOPINT; | |
927 | break; | |
161b7d16 | 928 | case SAVEt_AELEM: /* array element */ |
ad64d0ec | 929 | value = MUTABLE_SV(SSPOPPTR); |
161b7d16 | 930 | i = SSPOPINT; |
502c6561 | 931 | av = MUTABLE_AV(SSPOPPTR); |
658aef79 | 932 | ptr = av_fetch(av,i,1); |
5dd42e15 DM |
933 | if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */ |
934 | SvREFCNT_dec(value); | |
4e4c362e GS |
935 | if (ptr) { |
936 | sv = *(SV**)ptr; | |
3280af22 | 937 | if (sv && sv != &PL_sv_undef) { |
ad64d0ec | 938 | if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied)) |
b37c2d43 | 939 | SvREFCNT_inc_void_NN(sv); |
4e4c362e GS |
940 | goto restore_sv; |
941 | } | |
942 | } | |
943 | SvREFCNT_dec(av); | |
944 | SvREFCNT_dec(value); | |
945 | break; | |
161b7d16 | 946 | case SAVEt_HELEM: /* hash element */ |
ad64d0ec NC |
947 | value = MUTABLE_SV(SSPOPPTR); |
948 | sv = MUTABLE_SV(SSPOPPTR); | |
85fbaab2 | 949 | hv = MUTABLE_HV(SSPOPPTR); |
161b7d16 | 950 | ptr = hv_fetch_ent(hv, sv, 1, 0); |
fd1b367e | 951 | SvREFCNT_dec(sv); |
4e4c362e | 952 | if (ptr) { |
35a4481c | 953 | const SV * const oval = HeVAL((HE*)ptr); |
3280af22 | 954 | if (oval && oval != &PL_sv_undef) { |
4e4c362e | 955 | ptr = &HeVAL((HE*)ptr); |
ad64d0ec | 956 | if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
b37c2d43 | 957 | SvREFCNT_inc_void(*(SV**)ptr); |
502c6561 | 958 | av = MUTABLE_AV(hv); /* what to refcnt_dec */ |
4e4c362e GS |
959 | goto restore_sv; |
960 | } | |
961 | } | |
962 | SvREFCNT_dec(hv); | |
4e4c362e GS |
963 | SvREFCNT_dec(value); |
964 | break; | |
462e5cf6 | 965 | case SAVEt_OP: |
533c011a | 966 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 | 967 | break; |
25eaa213 | 968 | case SAVEt_HINTS: |
045ac317 | 969 | if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) { |
ad64d0ec | 970 | SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv))); |
045ac317 RGS |
971 | GvHV(PL_hintgv) = NULL; |
972 | } | |
c28fe1ec NC |
973 | Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash); |
974 | PL_compiling.cop_hints_hash = (struct refcounted_he *) SSPOPPTR; | |
601cee3b | 975 | *(I32*)&PL_hints = (I32)SSPOPINT; |
dfa41748 | 976 | if (PL_hints & HINT_LOCALIZE_HH) { |
ad64d0ec | 977 | SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv))); |
85fbaab2 | 978 | GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR); |
5b9c0671 NC |
979 | assert(GvHV(PL_hintgv)); |
980 | } else if (!GvHV(PL_hintgv)) { | |
981 | /* Need to add a new one manually, else gv_fetchpv() can | |
982 | add one in this code: | |
983 | ||
984 | if (SvTYPE(gv) == SVt_PVGV) { | |
985 | if (add) { | |
986 | GvMULTI_on(gv); | |
987 | gv_init_sv(gv, sv_type); | |
988 | if (*name=='!' && sv_type == SVt_PVHV && len==1) | |
989 | require_errno(gv); | |
990 | } | |
991 | return gv; | |
992 | } | |
993 | ||
994 | and it won't have the magic set. */ | |
995 | ||
996 | HV *const hv = newHV(); | |
997 | hv_magic(hv, NULL, PERL_MAGIC_hints); | |
998 | GvHV(PL_hintgv) = hv; | |
dfa41748 | 999 | } |
5b9c0671 | 1000 | assert(GvHV(PL_hintgv)); |
b3ac6de7 | 1001 | break; |
cb50131a | 1002 | case SAVEt_COMPPAD: |
f3548bdc | 1003 | PL_comppad = (PAD*)SSPOPPTR; |
58ed4fbe | 1004 | if (PL_comppad) |
cb50131a CB |
1005 | PL_curpad = AvARRAY(PL_comppad); |
1006 | else | |
4608196e | 1007 | PL_curpad = NULL; |
cb50131a | 1008 | break; |
09edbca0 | 1009 | case SAVEt_PADSV_AND_MORTALIZE: |
c3564e5c | 1010 | { |
35a4481c | 1011 | const PADOFFSET off = (PADOFFSET)SSPOPLONG; |
09edbca0 | 1012 | SV **svp; |
c3564e5c | 1013 | ptr = SSPOPPTR; |
09edbca0 NC |
1014 | assert (ptr); |
1015 | svp = AvARRAY((PAD*)ptr) + off; | |
1016 | /* This mortalizing used to be done by POPLOOP() via itersave. | |
1017 | But as we have all the information here, we can do it here, | |
1018 | save even having to have itersave in the struct. */ | |
1019 | sv_2mortal(*svp); | |
ad64d0ec | 1020 | *svp = MUTABLE_SV(SSPOPPTR); |
c3564e5c GS |
1021 | } |
1022 | break; | |
8b7059b1 DM |
1023 | case SAVEt_SAVESWITCHSTACK: |
1024 | { | |
1025 | dSP; | |
502c6561 NC |
1026 | AV *const t = MUTABLE_AV(SSPOPPTR); |
1027 | AV *const f = MUTABLE_AV(SSPOPPTR); | |
8b7059b1 DM |
1028 | SWITCHSTACK(t,f); |
1029 | PL_curstackinfo->si_stack = f; | |
1030 | } | |
1031 | break; | |
14f338dc DM |
1032 | case SAVEt_SET_SVFLAGS: |
1033 | { | |
35a4481c AL |
1034 | const U32 val = (U32)SSPOPINT; |
1035 | const U32 mask = (U32)SSPOPINT; | |
ad64d0ec | 1036 | sv = MUTABLE_SV(SSPOPPTR); |
14f338dc DM |
1037 | SvFLAGS(sv) &= ~mask; |
1038 | SvFLAGS(sv) |= val; | |
1039 | } | |
1040 | break; | |
95e06916 NC |
1041 | |
1042 | /* This would be a mathom, but Perl_save_svref() calls a static | |
1043 | function, S_save_scalar_at(), so has to stay in this file. */ | |
2053acbf | 1044 | case SAVEt_SVREF: /* scalar reference */ |
ad64d0ec | 1045 | value = MUTABLE_SV(SSPOPPTR); |
2053acbf NC |
1046 | ptr = SSPOPPTR; |
1047 | av = NULL; /* what to refcnt_dec */ | |
1048 | goto restore_sv; | |
95e06916 NC |
1049 | |
1050 | /* These are only saved in mathoms.c */ | |
1051 | case SAVEt_NSTAB: | |
159b6efe | 1052 | gv = MUTABLE_GV(SSPOPPTR); |
ad64d0ec | 1053 | (void)sv_clear(MUTABLE_SV(gv)); |
95e06916 | 1054 | break; |
2053acbf NC |
1055 | case SAVEt_LONG: /* long reference */ |
1056 | ptr = SSPOPPTR; | |
1057 | *(long*)ptr = (long)SSPOPLONG; | |
1058 | break; | |
95e06916 NC |
1059 | case SAVEt_IV: /* IV reference */ |
1060 | ptr = SSPOPPTR; | |
1061 | *(IV*)ptr = (IV)SSPOPIV; | |
1062 | break; | |
1063 | ||
2053acbf NC |
1064 | case SAVEt_I16: /* I16 reference */ |
1065 | ptr = SSPOPPTR; | |
1066 | *(I16*)ptr = (I16)SSPOPINT; | |
1067 | break; | |
1068 | case SAVEt_I8: /* I8 reference */ | |
1069 | ptr = SSPOPPTR; | |
1070 | *(I8*)ptr = (I8)SSPOPINT; | |
1071 | break; | |
2053acbf NC |
1072 | case SAVEt_DESTRUCTOR: |
1073 | ptr = SSPOPPTR; | |
1074 | (*SSPOPDPTR)(ptr); | |
1075 | break; | |
fc15ae8f NC |
1076 | case SAVEt_COP_ARYBASE: |
1077 | ptr = SSPOPPTR; | |
1078 | i = SSPOPINT; | |
1079 | CopARYBASE_set((COP *)ptr, i); | |
1080 | break; | |
68da3b2f NC |
1081 | case SAVEt_COMPILE_WARNINGS: |
1082 | ptr = SSPOPPTR; | |
72dc9ed5 | 1083 | |
68da3b2f NC |
1084 | if (!specialWARN(PL_compiling.cop_warnings)) |
1085 | PerlMemShared_free(PL_compiling.cop_warnings); | |
72dc9ed5 | 1086 | |
10edeb5d | 1087 | PL_compiling.cop_warnings = (STRLEN*)ptr; |
72dc9ed5 | 1088 | break; |
1ade1aa1 NC |
1089 | case SAVEt_RE_STATE: |
1090 | { | |
1091 | const struct re_save_state *const state | |
1092 | = (struct re_save_state *) | |
1093 | (PL_savestack + PL_savestack_ix | |
1094 | - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE); | |
1095 | PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE; | |
1096 | ||
1ade1aa1 NC |
1097 | if (PL_reg_start_tmp != state->re_state_reg_start_tmp) { |
1098 | Safefree(PL_reg_start_tmp); | |
1ade1aa1 | 1099 | } |
1ade1aa1 NC |
1100 | if (PL_reg_poscache != state->re_state_reg_poscache) { |
1101 | Safefree(PL_reg_poscache); | |
1ade1aa1 | 1102 | } |
46ab3289 | 1103 | Copy(state, &PL_reg_state, 1, struct re_save_state); |
1ade1aa1 NC |
1104 | } |
1105 | break; | |
7c197c94 DM |
1106 | case SAVEt_PARSER: |
1107 | ptr = SSPOPPTR; | |
1108 | parser_free((yy_parser *) ptr); | |
1109 | break; | |
79072805 | 1110 | default: |
cea2e8a9 | 1111 | Perl_croak(aTHX_ "panic: leave_scope inconsistency"); |
79072805 LW |
1112 | } |
1113 | } | |
302c0c93 NC |
1114 | |
1115 | PL_tainted = was; | |
79072805 | 1116 | } |
8990e307 | 1117 | |
8990e307 | 1118 | void |
864dbfa3 | 1119 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
8990e307 | 1120 | { |
97aff369 | 1121 | dVAR; |
7918f24d NC |
1122 | |
1123 | PERL_ARGS_ASSERT_CX_DUMP; | |
1124 | ||
35ff7856 | 1125 | #ifdef DEBUGGING |
22c35a8c | 1126 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 | 1127 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 | 1128 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
146174a9 CB |
1129 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n", |
1130 | PTR2UV(cx->blk_oldcop)); | |
760ac839 LW |
1131 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
1132 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); | |
146174a9 CB |
1133 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n", |
1134 | PTR2UV(cx->blk_oldpm)); | |
760ac839 | 1135 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 | 1136 | } |
6b35e009 | 1137 | switch (CxTYPE(cx)) { |
8990e307 LW |
1138 | case CXt_NULL: |
1139 | case CXt_BLOCK: | |
1140 | break; | |
146174a9 | 1141 | case CXt_FORMAT: |
f9c764c5 NC |
1142 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%"UVxf"\n", |
1143 | PTR2UV(cx->blk_format.cv)); | |
1144 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%"UVxf"\n", | |
1145 | PTR2UV(cx->blk_format.gv)); | |
1146 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%"UVxf"\n", | |
1147 | PTR2UV(cx->blk_format.dfoutgv)); | |
1148 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n", | |
bafb2adc | 1149 | (int)CxHASARGS(cx)); |
f9c764c5 NC |
1150 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%"UVxf"\n", |
1151 | PTR2UV(cx->blk_format.retop)); | |
146174a9 | 1152 | break; |
8990e307 | 1153 | case CXt_SUB: |
146174a9 CB |
1154 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1155 | PTR2UV(cx->blk_sub.cv)); | |
760ac839 | 1156 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 | 1157 | (long)cx->blk_sub.olddepth); |
760ac839 | 1158 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
bafb2adc NC |
1159 | (int)CxHASARGS(cx)); |
1160 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx)); | |
f39bc417 DM |
1161 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n", |
1162 | PTR2UV(cx->blk_sub.retop)); | |
8990e307 LW |
1163 | break; |
1164 | case CXt_EVAL: | |
760ac839 | 1165 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
85a64632 | 1166 | (long)CxOLD_IN_EVAL(cx)); |
760ac839 | 1167 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
85a64632 NC |
1168 | PL_op_name[CxOLD_OP_TYPE(cx)], |
1169 | PL_op_desc[CxOLD_OP_TYPE(cx)]); | |
0f79a09d GS |
1170 | if (cx->blk_eval.old_namesv) |
1171 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", | |
aa07b2f6 | 1172 | SvPVX_const(cx->blk_eval.old_namesv)); |
146174a9 CB |
1173 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n", |
1174 | PTR2UV(cx->blk_eval.old_eval_root)); | |
f39bc417 DM |
1175 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n", |
1176 | PTR2UV(cx->blk_eval.retop)); | |
8990e307 LW |
1177 | break; |
1178 | ||
c6fdafd0 | 1179 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1180 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1181 | case CXt_LOOP_FOR: |
1182 | case CXt_LOOP_PLAIN: | |
0cbdab38 | 1183 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx)); |
760ac839 | 1184 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 | 1185 | (long)cx->blk_loop.resetsp); |
022eaa24 NC |
1186 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%"UVxf"\n", |
1187 | PTR2UV(cx->blk_loop.my_op)); | |
146174a9 | 1188 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n", |
022eaa24 | 1189 | PTR2UV(CX_LOOP_NEXTOP_GET(cx))); |
d01136d6 | 1190 | /* XXX: not accurate for LAZYSV/IV */ |
146174a9 | 1191 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n", |
d01136d6 BS |
1192 | PTR2UV(cx->blk_loop.state_u.ary.ary)); |
1193 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", | |
1194 | (long)cx->blk_loop.state_u.ary.ix); | |
146174a9 CB |
1195 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n", |
1196 | PTR2UV(CxITERVAR(cx))); | |
8990e307 LW |
1197 | break; |
1198 | ||
1199 | case CXt_SUBST: | |
760ac839 | 1200 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 | 1201 | (long)cx->sb_iters); |
760ac839 | 1202 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 | 1203 | (long)cx->sb_maxiters); |
35ef4773 GS |
1204 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
1205 | (long)cx->sb_rflags); | |
760ac839 | 1206 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
c5bed6a7 | 1207 | (long)CxONCE(cx)); |
760ac839 | 1208 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 | 1209 | cx->sb_orig); |
146174a9 CB |
1210 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n", |
1211 | PTR2UV(cx->sb_dstr)); | |
1212 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n", | |
1213 | PTR2UV(cx->sb_targ)); | |
1214 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n", | |
1215 | PTR2UV(cx->sb_s)); | |
1216 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n", | |
1217 | PTR2UV(cx->sb_m)); | |
1218 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n", | |
1219 | PTR2UV(cx->sb_strend)); | |
1220 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n", | |
1221 | PTR2UV(cx->sb_rxres)); | |
8990e307 LW |
1222 | break; |
1223 | } | |
65e66c80 | 1224 | #else |
96a5add6 | 1225 | PERL_UNUSED_CONTEXT; |
65e66c80 | 1226 | PERL_UNUSED_ARG(cx); |
17c3b450 | 1227 | #endif /* DEBUGGING */ |
35ff7856 | 1228 | } |
241d1a3b NC |
1229 | |
1230 | /* | |
1231 | * Local variables: | |
1232 | * c-indentation-style: bsd | |
1233 | * c-basic-offset: 4 | |
1234 | * indent-tabs-mode: t | |
1235 | * End: | |
1236 | * | |
37442d52 RGS |
1237 | * ex: set ts=8 sts=4 sw=4 noet: |
1238 | */ |