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); | |
79072805 | 94 | } |
3280af22 | 95 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 LW |
96 | |
97 | } | |
98 | ||
99 | void | |
864dbfa3 | 100 | Perl_pop_scope(pTHX) |
79072805 | 101 | { |
97aff369 | 102 | dVAR; |
35a4481c | 103 | const I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 | 104 | LEAVE_SCOPE(oldsave); |
79072805 LW |
105 | } |
106 | ||
107 | void | |
864dbfa3 | 108 | Perl_markstack_grow(pTHX) |
a0d0e21e | 109 | { |
97aff369 | 110 | dVAR; |
35a4481c AL |
111 | const I32 oldmax = PL_markstack_max - PL_markstack; |
112 | const I32 newmax = GROW(oldmax); | |
a0d0e21e | 113 | |
3280af22 NIS |
114 | Renew(PL_markstack, newmax, I32); |
115 | PL_markstack_ptr = PL_markstack + oldmax; | |
116 | PL_markstack_max = PL_markstack + newmax; | |
a0d0e21e LW |
117 | } |
118 | ||
119 | void | |
864dbfa3 | 120 | Perl_savestack_grow(pTHX) |
79072805 | 121 | { |
97aff369 | 122 | dVAR; |
8aacddc1 | 123 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
3280af22 | 124 | Renew(PL_savestack, PL_savestack_max, ANY); |
79072805 LW |
125 | } |
126 | ||
4b3c1a47 AE |
127 | void |
128 | Perl_savestack_grow_cnt(pTHX_ I32 need) | |
129 | { | |
97aff369 | 130 | dVAR; |
4b3c1a47 AE |
131 | PL_savestack_max = PL_savestack_ix + need; |
132 | Renew(PL_savestack, PL_savestack_max, ANY); | |
133 | } | |
134 | ||
2ce36478 SM |
135 | #undef GROW |
136 | ||
79072805 | 137 | void |
864dbfa3 | 138 | Perl_tmps_grow(pTHX_ I32 n) |
677b06e3 | 139 | { |
97aff369 | 140 | dVAR; |
677b06e3 GS |
141 | #ifndef STRESS_REALLOC |
142 | if (n < 128) | |
143 | n = (PL_tmps_max < 512) ? 128 : 512; | |
144 | #endif | |
145 | PL_tmps_max = PL_tmps_ix + n + 1; | |
146 | Renew(PL_tmps_stack, PL_tmps_max, SV*); | |
147 | } | |
148 | ||
149 | ||
150 | void | |
864dbfa3 | 151 | Perl_free_tmps(pTHX) |
79072805 | 152 | { |
97aff369 | 153 | dVAR; |
79072805 | 154 | /* XXX should tmps_floor live in cxstack? */ |
35a4481c | 155 | const I32 myfloor = PL_tmps_floor; |
3280af22 | 156 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
901017d6 | 157 | SV* const sv = PL_tmps_stack[PL_tmps_ix]; |
a0714e2c | 158 | PL_tmps_stack[PL_tmps_ix--] = NULL; |
8aacddc1 | 159 | if (sv && sv != &PL_sv_undef) { |
463ee0b2 | 160 | SvTEMP_off(sv); |
8990e307 | 161 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 | 162 | } |
79072805 LW |
163 | } |
164 | } | |
165 | ||
76e3520e | 166 | STATIC SV * |
af7df257 | 167 | S_save_scalar_at(pTHX_ SV **sptr, const U32 flags) |
79072805 | 168 | { |
97aff369 | 169 | dVAR; |
901017d6 | 170 | SV * const osv = *sptr; |
561b68a9 | 171 | register SV * const sv = *sptr = newSV(0); |
79072805 | 172 | |
7918f24d NC |
173 | PERL_ARGS_ASSERT_SAVE_SCALAR_AT; |
174 | ||
a0d0e21e | 175 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
a0d0e21e | 176 | if (SvGMAGICAL(osv)) { |
35a4481c | 177 | const bool oldtainted = PL_tainted; |
a0d0e21e | 178 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
c268c2a6 | 179 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
3280af22 | 180 | PL_tainted = oldtainted; |
a0d0e21e | 181 | } |
af7df257 | 182 | mg_localize(osv, sv, (flags & SAVEf_SETMAGIC) != 0); |
79072805 LW |
183 | } |
184 | return sv; | |
185 | } | |
186 | ||
dfcd3de5 NC |
187 | void |
188 | Perl_save_pushptrptr(pTHX_ void *const ptr1, void *const ptr2, const int type) | |
e22024d3 NC |
189 | { |
190 | dVAR; | |
191 | SSCHECK(3); | |
192 | SSPUSHPTR(ptr1); | |
193 | SSPUSHPTR(ptr2); | |
194 | SSPUSHINT(type); | |
195 | } | |
196 | ||
7a4c00b4 | 197 | SV * |
864dbfa3 | 198 | Perl_save_scalar(pTHX_ GV *gv) |
7a4c00b4 | 199 | { |
97aff369 | 200 | dVAR; |
fb4fc1fa | 201 | SV ** const sptr = &GvSVn(gv); |
7918f24d NC |
202 | |
203 | PERL_ARGS_ASSERT_SAVE_SCALAR; | |
204 | ||
27cc343c | 205 | PL_localizing = 1; |
0cbee0a4 | 206 | SvGETMAGIC(*sptr); |
27cc343c | 207 | PL_localizing = 0; |
e22024d3 | 208 | save_pushptrptr(SvREFCNT_inc_simple(gv), SvREFCNT_inc(*sptr), SAVEt_SV); |
af7df257 | 209 | return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */ |
7a4c00b4 PP |
210 | } |
211 | ||
f4dd75d9 | 212 | /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to |
b9d12d37 GS |
213 | * restore a global SV to its prior contents, freeing new value. */ |
214 | void | |
864dbfa3 | 215 | Perl_save_generic_svref(pTHX_ SV **sptr) |
b9d12d37 | 216 | { |
97aff369 | 217 | dVAR; |
7918f24d NC |
218 | |
219 | PERL_ARGS_ASSERT_SAVE_GENERIC_SVREF; | |
220 | ||
e22024d3 | 221 | save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF); |
b9d12d37 GS |
222 | } |
223 | ||
f4dd75d9 GS |
224 | /* Like save_pptr(), but also Safefree()s the new value if it is different |
225 | * from the old one. Can be used to restore a global char* to its prior | |
226 | * contents, freeing new value. */ | |
227 | void | |
228 | Perl_save_generic_pvref(pTHX_ char **str) | |
229 | { | |
97aff369 | 230 | dVAR; |
7918f24d NC |
231 | |
232 | PERL_ARGS_ASSERT_SAVE_GENERIC_PVREF; | |
233 | ||
e22024d3 | 234 | save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF); |
f4dd75d9 GS |
235 | } |
236 | ||
05ec9bb3 NIS |
237 | /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree(). |
238 | * Can be used to restore a shared global char* to its prior | |
239 | * contents, freeing new value. */ | |
240 | void | |
241 | Perl_save_shared_pvref(pTHX_ char **str) | |
242 | { | |
97aff369 | 243 | dVAR; |
7918f24d NC |
244 | |
245 | PERL_ARGS_ASSERT_SAVE_SHARED_PVREF; | |
246 | ||
e22024d3 | 247 | save_pushptrptr(str, *str, SAVEt_SHARED_PVREF); |
05ec9bb3 NIS |
248 | } |
249 | ||
14f338dc DM |
250 | /* set the SvFLAGS specified by mask to the values in val */ |
251 | ||
252 | void | |
253 | Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val) | |
254 | { | |
97aff369 | 255 | dVAR; |
7918f24d NC |
256 | |
257 | PERL_ARGS_ASSERT_SAVE_SET_SVFLAGS; | |
258 | ||
14f338dc DM |
259 | SSCHECK(4); |
260 | SSPUSHPTR(sv); | |
261 | SSPUSHINT(mask); | |
262 | SSPUSHINT(val); | |
263 | SSPUSHINT(SAVEt_SET_SVFLAGS); | |
264 | } | |
265 | ||
79072805 | 266 | void |
864dbfa3 | 267 | Perl_save_gp(pTHX_ GV *gv, I32 empty) |
79072805 | 268 | { |
97aff369 | 269 | dVAR; |
7918f24d NC |
270 | |
271 | PERL_ARGS_ASSERT_SAVE_GP; | |
272 | ||
e22024d3 | 273 | save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP); |
79072805 | 274 | |
5f05dabc | 275 | if (empty) { |
12816592 | 276 | GP *gp = Perl_newGP(aTHX_ gv); |
146174a9 | 277 | |
fae75791 | 278 | if (GvCVu(gv)) |
e1a479c5 | 279 | mro_method_changed_in(GvSTASH(gv)); /* taking a method out of circulation ("local")*/ |
146174a9 CB |
280 | if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) { |
281 | gp->gp_io = newIO(); | |
282 | IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START; | |
283 | } | |
72651472 NC |
284 | #ifdef PERL_DONT_CREATE_GVSV |
285 | if (gv == PL_errgv) { | |
286 | /* We could scatter this logic everywhere by changing the | |
287 | definition of ERRSV from GvSV() to GvSVn(), but it seems more | |
288 | efficient to do this check once here. */ | |
289 | gp->gp_sv = newSV(0); | |
290 | } | |
291 | #endif | |
12816592 | 292 | GvGP(gv) = gp; |
5f05dabc PP |
293 | } |
294 | else { | |
44a8e56a | 295 | gp_ref(GvGP(gv)); |
5f05dabc PP |
296 | GvINTRO_on(gv); |
297 | } | |
79072805 | 298 | } |
79072805 | 299 | |
79072805 | 300 | AV * |
864dbfa3 | 301 | Perl_save_ary(pTHX_ GV *gv) |
79072805 | 302 | { |
97aff369 | 303 | dVAR; |
901017d6 | 304 | AV * const oav = GvAVn(gv); |
67a38de0 | 305 | AV *av; |
fb73857a | 306 | |
7918f24d NC |
307 | PERL_ARGS_ASSERT_SAVE_ARY; |
308 | ||
67a38de0 NIS |
309 | if (!AvREAL(oav) && AvREIFY(oav)) |
310 | av_reify(oav); | |
e22024d3 | 311 | save_pushptrptr(gv, oav, SAVEt_AV); |
79072805 | 312 | |
4608196e | 313 | GvAV(gv) = NULL; |
fb73857a | 314 | av = GvAVn(gv); |
0cbee0a4 | 315 | if (SvMAGIC(oav)) |
9711599e | 316 | mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE); |
fb73857a | 317 | return av; |
79072805 LW |
318 | } |
319 | ||
320 | HV * | |
864dbfa3 | 321 | Perl_save_hash(pTHX_ GV *gv) |
79072805 | 322 | { |
97aff369 | 323 | dVAR; |
fb73857a PP |
324 | HV *ohv, *hv; |
325 | ||
7918f24d NC |
326 | PERL_ARGS_ASSERT_SAVE_HASH; |
327 | ||
e22024d3 | 328 | save_pushptrptr(gv, (ohv = GvHVn(gv)), SAVEt_HV); |
79072805 | 329 | |
4608196e | 330 | GvHV(gv) = NULL; |
fb73857a | 331 | hv = GvHVn(gv); |
0cbee0a4 | 332 | if (SvMAGIC(ohv)) |
9711599e | 333 | mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE); |
fb73857a | 334 | return hv; |
79072805 LW |
335 | } |
336 | ||
337 | void | |
864dbfa3 | 338 | Perl_save_item(pTHX_ register SV *item) |
79072805 | 339 | { |
97aff369 | 340 | dVAR; |
901017d6 | 341 | register SV * const sv = newSVsv(item); |
79072805 | 342 | |
7918f24d NC |
343 | PERL_ARGS_ASSERT_SAVE_ITEM; |
344 | ||
e22024d3 NC |
345 | save_pushptrptr(item, /* remember the pointer */ |
346 | sv, /* remember the value */ | |
347 | SAVEt_ITEM); | |
79072805 LW |
348 | } |
349 | ||
350 | void | |
1409bc06 | 351 | Perl_save_bool(pTHX_ bool *boolp) |
79072805 | 352 | { |
97aff369 | 353 | dVAR; |
7918f24d | 354 | |
1409bc06 | 355 | PERL_ARGS_ASSERT_SAVE_BOOL; |
7918f24d | 356 | |
79072805 | 357 | SSCHECK(3); |
1409bc06 NC |
358 | SSPUSHBOOL(*boolp); |
359 | SSPUSHPTR(boolp); | |
360 | SSPUSHINT(SAVEt_BOOL); | |
361 | } | |
362 | ||
7623d426 NC |
363 | void |
364 | Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type) | |
1409bc06 NC |
365 | { |
366 | dVAR; | |
367 | SSCHECK(3); | |
368 | SSPUSHINT(i); | |
369 | SSPUSHPTR(ptr); | |
370 | SSPUSHINT(type); | |
79072805 LW |
371 | } |
372 | ||
373 | void | |
1409bc06 | 374 | Perl_save_int(pTHX_ int *intp) |
9febdf04 | 375 | { |
97aff369 | 376 | dVAR; |
7918f24d | 377 | |
1409bc06 | 378 | PERL_ARGS_ASSERT_SAVE_INT; |
7918f24d | 379 | |
1409bc06 | 380 | save_pushi32ptr(*intp, intp, SAVEt_INT); |
9febdf04 RH |
381 | } |
382 | ||
383 | void | |
58188858 RGS |
384 | Perl_save_I8(pTHX_ I8 *bytep) |
385 | { | |
386 | dVAR; | |
7918f24d NC |
387 | |
388 | PERL_ARGS_ASSERT_SAVE_I8; | |
389 | ||
1409bc06 | 390 | save_pushi32ptr(*bytep, bytep, SAVEt_I8); |
58188858 RGS |
391 | } |
392 | ||
393 | void | |
87a84751 JH |
394 | Perl_save_I16(pTHX_ I16 *intp) |
395 | { | |
396 | dVAR; | |
7918f24d NC |
397 | |
398 | PERL_ARGS_ASSERT_SAVE_I16; | |
399 | ||
1409bc06 | 400 | save_pushi32ptr(*intp, intp, SAVEt_I16); |
87a84751 JH |
401 | } |
402 | ||
403 | void | |
864dbfa3 | 404 | Perl_save_I32(pTHX_ I32 *intp) |
79072805 | 405 | { |
97aff369 | 406 | dVAR; |
7918f24d NC |
407 | |
408 | PERL_ARGS_ASSERT_SAVE_I32; | |
409 | ||
1409bc06 | 410 | save_pushi32ptr(*intp, intp, SAVEt_I32); |
79072805 LW |
411 | } |
412 | ||
85e6fe83 LW |
413 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
414 | * force word-alignment and we'll miss the pointer. | |
415 | */ | |
416 | void | |
864dbfa3 | 417 | Perl_save_pptr(pTHX_ char **pptr) |
85e6fe83 | 418 | { |
97aff369 | 419 | dVAR; |
7918f24d NC |
420 | |
421 | PERL_ARGS_ASSERT_SAVE_PPTR; | |
422 | ||
e22024d3 | 423 | save_pushptrptr(*pptr, pptr, SAVEt_PPTR); |
85e6fe83 LW |
424 | } |
425 | ||
79072805 | 426 | void |
146174a9 CB |
427 | Perl_save_vptr(pTHX_ void *ptr) |
428 | { | |
97aff369 | 429 | dVAR; |
7918f24d NC |
430 | |
431 | PERL_ARGS_ASSERT_SAVE_VPTR; | |
432 | ||
e22024d3 | 433 | save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR); |
146174a9 CB |
434 | } |
435 | ||
436 | void | |
864dbfa3 | 437 | Perl_save_sptr(pTHX_ SV **sptr) |
79072805 | 438 | { |
97aff369 | 439 | dVAR; |
7918f24d NC |
440 | |
441 | PERL_ARGS_ASSERT_SAVE_SPTR; | |
442 | ||
e22024d3 | 443 | save_pushptrptr(*sptr, sptr, SAVEt_SPTR); |
79072805 LW |
444 | } |
445 | ||
c3564e5c | 446 | void |
09edbca0 | 447 | Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off) |
c3564e5c | 448 | { |
97aff369 | 449 | dVAR; |
c3564e5c | 450 | SSCHECK(4); |
f3548bdc | 451 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
09edbca0 | 452 | SSPUSHPTR(SvREFCNT_inc_simple_NN(PL_curpad[off])); |
f3548bdc | 453 | SSPUSHPTR(PL_comppad); |
c3564e5c | 454 | SSPUSHLONG((long)off); |
09edbca0 | 455 | SSPUSHINT(SAVEt_PADSV_AND_MORTALIZE); |
c3564e5c GS |
456 | } |
457 | ||
79072805 | 458 | void |
864dbfa3 | 459 | Perl_save_hptr(pTHX_ HV **hptr) |
79072805 | 460 | { |
97aff369 | 461 | dVAR; |
7918f24d NC |
462 | |
463 | PERL_ARGS_ASSERT_SAVE_HPTR; | |
464 | ||
e22024d3 | 465 | save_pushptrptr(*hptr, hptr, SAVEt_HPTR); |
79072805 LW |
466 | } |
467 | ||
468 | void | |
864dbfa3 | 469 | Perl_save_aptr(pTHX_ AV **aptr) |
79072805 | 470 | { |
97aff369 | 471 | dVAR; |
7918f24d NC |
472 | |
473 | PERL_ARGS_ASSERT_SAVE_APTR; | |
474 | ||
e22024d3 | 475 | save_pushptrptr(*aptr, aptr, SAVEt_APTR); |
79072805 LW |
476 | } |
477 | ||
478 | void | |
2fd8beea | 479 | Perl_save_pushptr(pTHX_ void *const ptr, const int type) |
8990e307 | 480 | { |
97aff369 | 481 | dVAR; |
8990e307 | 482 | SSCHECK(2); |
2fd8beea NC |
483 | SSPUSHPTR(ptr); |
484 | SSPUSHINT(type); | |
8990e307 LW |
485 | } |
486 | ||
487 | void | |
864dbfa3 | 488 | Perl_save_clearsv(pTHX_ SV **svp) |
8990e307 | 489 | { |
97aff369 | 490 | dVAR; |
7918f24d NC |
491 | |
492 | PERL_ARGS_ASSERT_SAVE_CLEARSV; | |
493 | ||
f3548bdc | 494 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
8990e307 | 495 | SSCHECK(2); |
3280af22 | 496 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 | 497 | SSPUSHINT(SAVEt_CLEARSV); |
d9d18af6 | 498 | SvPADSTALE_off(*svp); /* mark lexical as active */ |
8990e307 LW |
499 | } |
500 | ||
501 | void | |
864dbfa3 | 502 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
8990e307 | 503 | { |
97aff369 | 504 | dVAR; |
7918f24d NC |
505 | |
506 | PERL_ARGS_ASSERT_SAVE_DELETE; | |
507 | ||
85a721ca | 508 | save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE); |
8990e307 LW |
509 | } |
510 | ||
511 | void | |
12ab1f58 JH |
512 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
513 | { | |
514 | dVAR; | |
7918f24d NC |
515 | |
516 | PERL_ARGS_ASSERT_SAVE_DESTRUCTOR; | |
517 | ||
12ab1f58 JH |
518 | SSCHECK(3); |
519 | SSPUSHDPTR(f); | |
520 | SSPUSHPTR(p); | |
521 | SSPUSHINT(SAVEt_DESTRUCTOR); | |
522 | } | |
523 | ||
524 | void | |
146174a9 CB |
525 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
526 | { | |
97aff369 | 527 | dVAR; |
146174a9 CB |
528 | SSCHECK(3); |
529 | SSPUSHDXPTR(f); | |
530 | SSPUSHPTR(p); | |
531 | SSPUSHINT(SAVEt_DESTRUCTOR_X); | |
532 | } | |
533 | ||
534 | void | |
da8315f8 NC |
535 | Perl_save_hints(pTHX) |
536 | { | |
537 | dVAR; | |
538 | if (PL_compiling.cop_hints_hash) { | |
539 | HINTS_REFCNT_LOCK; | |
540 | PL_compiling.cop_hints_hash->refcounted_he_refcnt++; | |
541 | HINTS_REFCNT_UNLOCK; | |
542 | } | |
da8315f8 | 543 | if (PL_hints & HINT_LOCALIZE_HH) { |
be84297e NC |
544 | save_pushptri32ptr(GvHV(PL_hintgv), PL_hints, |
545 | PL_compiling.cop_hints_hash, SAVEt_HINTS); | |
da8315f8 | 546 | GvHV(PL_hintgv) = Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv)); |
be84297e NC |
547 | } else { |
548 | save_pushi32ptr(PL_hints, PL_compiling.cop_hints_hash, SAVEt_HINTS); | |
da8315f8 | 549 | } |
be84297e NC |
550 | } |
551 | ||
552 | static void | |
553 | S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2, | |
554 | const int type) | |
555 | { | |
556 | SSCHECK(4); | |
557 | SSPUSHPTR(ptr1); | |
558 | SSPUSHINT(i); | |
559 | SSPUSHPTR(ptr2); | |
560 | SSPUSHINT(type); | |
da8315f8 NC |
561 | } |
562 | ||
563 | void | |
59413342 | 564 | Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr) |
4e4c362e | 565 | { |
97aff369 | 566 | dVAR; |
bfc4de9f | 567 | SV *sv; |
7918f24d NC |
568 | |
569 | PERL_ARGS_ASSERT_SAVE_AELEM; | |
570 | ||
0cbee0a4 | 571 | SvGETMAGIC(*sptr); |
be84297e NC |
572 | save_pushptri32ptr(SvREFCNT_inc_simple(av), idx, SvREFCNT_inc(*sptr), |
573 | SAVEt_AELEM); | |
5dd42e15 DM |
574 | /* if it gets reified later, the restore will have the wrong refcnt */ |
575 | if (!AvREAL(av) && AvREIFY(av)) | |
b37c2d43 | 576 | SvREFCNT_inc_void(*sptr); |
af7df257 | 577 | save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */ |
bfc4de9f DM |
578 | sv = *sptr; |
579 | /* If we're localizing a tied array element, this new sv | |
580 | * won't actually be stored in the array - so it won't get | |
581 | * reaped when the localize ends. Ensure it gets reaped by | |
582 | * mortifying it instead. DAPM */ | |
583 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
584 | sv_2mortal(sv); | |
4e4c362e GS |
585 | } |
586 | ||
587 | void | |
af7df257 | 588 | Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags) |
4e4c362e | 589 | { |
97aff369 | 590 | dVAR; |
bfc4de9f | 591 | SV *sv; |
7918f24d | 592 | |
af7df257 | 593 | PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS; |
7918f24d | 594 | |
0cbee0a4 | 595 | SvGETMAGIC(*sptr); |
4e4c362e | 596 | SSCHECK(4); |
b37c2d43 | 597 | SSPUSHPTR(SvREFCNT_inc_simple(hv)); |
b2096149 | 598 | SSPUSHPTR(newSVsv(key)); |
4e4c362e GS |
599 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
600 | SSPUSHINT(SAVEt_HELEM); | |
af7df257 | 601 | save_scalar_at(sptr, flags); |
bfc4de9f DM |
602 | sv = *sptr; |
603 | /* If we're localizing a tied hash element, this new sv | |
604 | * won't actually be stored in the hash - so it won't get | |
605 | * reaped when the localize ends. Ensure it gets reaped by | |
606 | * mortifying it instead. DAPM */ | |
607 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
608 | sv_2mortal(sv); | |
4e4c362e GS |
609 | } |
610 | ||
2053acbf NC |
611 | SV* |
612 | Perl_save_svref(pTHX_ SV **sptr) | |
613 | { | |
614 | dVAR; | |
7918f24d NC |
615 | |
616 | PERL_ARGS_ASSERT_SAVE_SVREF; | |
617 | ||
2053acbf | 618 | SvGETMAGIC(*sptr); |
e22024d3 | 619 | save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF); |
af7df257 | 620 | return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */ |
2053acbf NC |
621 | } |
622 | ||
455ece5e | 623 | I32 |
864dbfa3 | 624 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
455ece5e | 625 | { |
97aff369 | 626 | dVAR; |
35a4481c | 627 | register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
8aacddc1 | 628 | - (char*)PL_savestack); |
35a4481c | 629 | register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
455ece5e | 630 | |
1bb4c835 | 631 | SSGROW(elems + 2); |
455ece5e AD |
632 | |
633 | PL_savestack_ix += elems; | |
634 | SSPUSHINT(elems); | |
635 | SSPUSHINT(SAVEt_ALLOC); | |
636 | return start; | |
637 | } | |
638 | ||
462e5cf6 | 639 | void |
864dbfa3 | 640 | Perl_leave_scope(pTHX_ I32 base) |
79072805 | 641 | { |
97aff369 | 642 | dVAR; |
79072805 LW |
643 | register SV *sv; |
644 | register SV *value; | |
645 | register GV *gv; | |
646 | register AV *av; | |
647 | register HV *hv; | |
20454177 | 648 | void* ptr; |
f4dd75d9 | 649 | register char* str; |
161b7d16 | 650 | I32 i; |
302c0c93 NC |
651 | /* Localise the effects of the TAINT_NOT inside the loop. */ |
652 | const bool was = PL_tainted; | |
79072805 LW |
653 | |
654 | if (base < -1) | |
cea2e8a9 | 655 | Perl_croak(aTHX_ "panic: corrupt saved stack index"); |
3280af22 | 656 | while (PL_savestack_ix > base) { |
c6ae7647 NC |
657 | TAINT_NOT; |
658 | ||
79072805 LW |
659 | switch (SSPOPINT) { |
660 | case SAVEt_ITEM: /* normal string */ | |
ad64d0ec NC |
661 | value = MUTABLE_SV(SSPOPPTR); |
662 | sv = MUTABLE_SV(SSPOPPTR); | |
79072805 | 663 | sv_replace(sv,value); |
3280af22 | 664 | PL_localizing = 2; |
79072805 | 665 | SvSETMAGIC(sv); |
3280af22 | 666 | PL_localizing = 0; |
79072805 | 667 | break; |
8aacddc1 | 668 | case SAVEt_SV: /* scalar reference */ |
ad64d0ec | 669 | value = MUTABLE_SV(SSPOPPTR); |
159b6efe | 670 | gv = MUTABLE_GV(SSPOPPTR); |
7a4c00b4 | 671 | ptr = &GvSV(gv); |
502c6561 | 672 | av = MUTABLE_AV(gv); /* what to refcnt_dec */ |
2053acbf NC |
673 | restore_sv: |
674 | sv = *(SV**)ptr; | |
2053acbf NC |
675 | *(SV**)ptr = value; |
676 | SvREFCNT_dec(sv); | |
677 | PL_localizing = 2; | |
678 | SvSETMAGIC(value); | |
679 | PL_localizing = 0; | |
680 | SvREFCNT_dec(value); | |
681 | if (av) /* actually an av, hv or gv */ | |
682 | SvREFCNT_dec(av); | |
683 | break; | |
8aacddc1 | 684 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
f4dd75d9 | 685 | ptr = SSPOPPTR; |
b03d03b0 | 686 | str = (char*)SSPOPPTR; |
f4dd75d9 GS |
687 | if (*(char**)ptr != str) { |
688 | Safefree(*(char**)ptr); | |
689 | *(char**)ptr = str; | |
690 | } | |
691 | break; | |
05ec9bb3 NIS |
692 | case SAVEt_SHARED_PVREF: /* shared pv */ |
693 | str = (char*)SSPOPPTR; | |
694 | ptr = SSPOPPTR; | |
695 | if (*(char**)ptr != str) { | |
5e54c26f | 696 | #ifdef NETWARE |
9ecbcc42 | 697 | PerlMem_free(*(char**)ptr); |
5e54c26f | 698 | #else |
05ec9bb3 | 699 | PerlMemShared_free(*(char**)ptr); |
5e54c26f | 700 | #endif |
05ec9bb3 NIS |
701 | *(char**)ptr = str; |
702 | } | |
703 | break; | |
8aacddc1 | 704 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
ad64d0ec | 705 | value = MUTABLE_SV(SSPOPPTR); |
b9d12d37 | 706 | ptr = SSPOPPTR; |
f4dd75d9 GS |
707 | sv = *(SV**)ptr; |
708 | *(SV**)ptr = value; | |
709 | SvREFCNT_dec(sv); | |
b9d12d37 GS |
710 | SvREFCNT_dec(value); |
711 | break; | |
8aacddc1 | 712 | case SAVEt_AV: /* array reference */ |
502c6561 | 713 | av = MUTABLE_AV(SSPOPPTR); |
159b6efe | 714 | gv = MUTABLE_GV(SSPOPPTR); |
fb73857a | 715 | if (GvAV(gv)) { |
c4a7531d | 716 | SvREFCNT_dec(GvAV(gv)); |
fb73857a | 717 | } |
8aacddc1 | 718 | GvAV(gv) = av; |
fb73857a | 719 | if (SvMAGICAL(av)) { |
3280af22 | 720 | PL_localizing = 2; |
ad64d0ec | 721 | SvSETMAGIC(MUTABLE_SV(av)); |
3280af22 | 722 | PL_localizing = 0; |
fb73857a | 723 | } |
8aacddc1 NIS |
724 | break; |
725 | case SAVEt_HV: /* hash reference */ | |
85fbaab2 | 726 | hv = MUTABLE_HV(SSPOPPTR); |
159b6efe | 727 | gv = MUTABLE_GV(SSPOPPTR); |
fb73857a | 728 | if (GvHV(gv)) { |
c4a7531d | 729 | SvREFCNT_dec(GvHV(gv)); |
fb73857a | 730 | } |
8aacddc1 | 731 | GvHV(gv) = hv; |
fb73857a | 732 | if (SvMAGICAL(hv)) { |
3280af22 | 733 | PL_localizing = 2; |
ad64d0ec | 734 | SvSETMAGIC(MUTABLE_SV(hv)); |
3280af22 | 735 | PL_localizing = 0; |
fb73857a | 736 | } |
8aacddc1 | 737 | break; |
79072805 LW |
738 | case SAVEt_INT: /* int reference */ |
739 | ptr = SSPOPPTR; | |
740 | *(int*)ptr = (int)SSPOPINT; | |
741 | break; | |
9febdf04 RH |
742 | case SAVEt_BOOL: /* bool reference */ |
743 | ptr = SSPOPPTR; | |
744 | *(bool*)ptr = (bool)SSPOPBOOL; | |
745 | break; | |
79072805 LW |
746 | case SAVEt_I32: /* I32 reference */ |
747 | ptr = SSPOPPTR; | |
3235b7a3 NC |
748 | #ifdef PERL_DEBUG_READONLY_OPS |
749 | { | |
750 | const I32 val = SSPOPINT; | |
751 | if (*(I32*)ptr != val) | |
752 | *(I32*)ptr = val; | |
753 | } | |
754 | #else | |
79072805 | 755 | *(I32*)ptr = (I32)SSPOPINT; |
3235b7a3 | 756 | #endif |
79072805 LW |
757 | break; |
758 | case SAVEt_SPTR: /* SV* reference */ | |
759 | ptr = SSPOPPTR; | |
ad64d0ec | 760 | *(SV**)ptr = MUTABLE_SV(SSPOPPTR); |
79072805 | 761 | break; |
146174a9 | 762 | case SAVEt_VPTR: /* random* reference */ |
85e6fe83 LW |
763 | case SAVEt_PPTR: /* char* reference */ |
764 | ptr = SSPOPPTR; | |
765 | *(char**)ptr = (char*)SSPOPPTR; | |
766 | break; | |
79072805 LW |
767 | case SAVEt_HPTR: /* HV* reference */ |
768 | ptr = SSPOPPTR; | |
85fbaab2 | 769 | *(HV**)ptr = MUTABLE_HV(SSPOPPTR); |
79072805 LW |
770 | break; |
771 | case SAVEt_APTR: /* AV* reference */ | |
772 | ptr = SSPOPPTR; | |
502c6561 | 773 | *(AV**)ptr = MUTABLE_AV(SSPOPPTR); |
79072805 | 774 | break; |
fb73857a | 775 | case SAVEt_GP: /* scalar reference */ |
79072805 | 776 | ptr = SSPOPPTR; |
159b6efe | 777 | gv = MUTABLE_GV(SSPOPPTR); |
8aacddc1 NIS |
778 | gp_free(gv); |
779 | GvGP(gv) = (GP*)ptr; | |
dd69841b BB |
780 | /* putting a method back into circulation ("local")*/ |
781 | if (GvCVu(gv) && (hv=GvSTASH(gv)) && HvNAME_get(hv)) | |
782 | mro_method_changed_in(hv); | |
4633a7c4 | 783 | SvREFCNT_dec(gv); |
8aacddc1 | 784 | break; |
8990e307 LW |
785 | case SAVEt_FREESV: |
786 | ptr = SSPOPPTR; | |
ad64d0ec | 787 | SvREFCNT_dec(MUTABLE_SV(ptr)); |
8990e307 | 788 | break; |
26d9b02f JH |
789 | case SAVEt_MORTALIZESV: |
790 | ptr = SSPOPPTR; | |
ad64d0ec | 791 | sv_2mortal(MUTABLE_SV(ptr)); |
26d9b02f | 792 | break; |
8990e307 LW |
793 | case SAVEt_FREEOP: |
794 | ptr = SSPOPPTR; | |
f3548bdc | 795 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */ |
8990e307 LW |
796 | op_free((OP*)ptr); |
797 | break; | |
798 | case SAVEt_FREEPV: | |
799 | ptr = SSPOPPTR; | |
1df70142 | 800 | Safefree(ptr); |
8990e307 LW |
801 | break; |
802 | case SAVEt_CLEARSV: | |
3280af22 | 803 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 | 804 | sv = *(SV**)ptr; |
dd2155a4 DM |
805 | |
806 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, | |
f3548bdc DM |
807 | "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n", |
808 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), | |
809 | (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), | |
dd2155a4 DM |
810 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" |
811 | )); | |
812 | ||
bc44cdaf GS |
813 | /* Can clear pad variable in place? */ |
814 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { | |
8aacddc1 NIS |
815 | /* |
816 | * if a my variable that was made readonly is going out of | |
817 | * scope, we want to remove the readonlyness so that it can | |
818 | * go out of scope quietly | |
8aacddc1 | 819 | */ |
a26e96df | 820 | if (SvPADMY(sv) && !SvFAKE(sv)) |
8aacddc1 NIS |
821 | SvREADONLY_off(sv); |
822 | ||
6fc92669 | 823 | if (SvTHINKFIRST(sv)) |
840a7b70 | 824 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF); |
a0d0e21e LW |
825 | if (SvMAGICAL(sv)) |
826 | mg_free(sv); | |
8990e307 LW |
827 | |
828 | switch (SvTYPE(sv)) { | |
829 | case SVt_NULL: | |
830 | break; | |
831 | case SVt_PVAV: | |
502c6561 | 832 | av_clear(MUTABLE_AV(sv)); |
8990e307 LW |
833 | break; |
834 | case SVt_PVHV: | |
85fbaab2 | 835 | hv_clear(MUTABLE_HV(sv)); |
8990e307 LW |
836 | break; |
837 | case SVt_PVCV: | |
cea2e8a9 | 838 | Perl_croak(aTHX_ "panic: leave_scope pad code"); |
8990e307 | 839 | default: |
0c34ef67 | 840 | SvOK_off(sv); |
8990e307 LW |
841 | break; |
842 | } | |
d9d18af6 | 843 | SvPADSTALE_on(sv); /* mark as no longer live */ |
8990e307 LW |
844 | } |
845 | else { /* Someone has a claim on this, so abandon it. */ | |
35a4481c | 846 | const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP); |
8990e307 | 847 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
ad64d0ec NC |
848 | case SVt_PVAV: *(SV**)ptr = MUTABLE_SV(newAV()); break; |
849 | case SVt_PVHV: *(SV**)ptr = MUTABLE_SV(newHV()); break; | |
561b68a9 | 850 | default: *(SV**)ptr = newSV(0); break; |
8990e307 | 851 | } |
53868620 | 852 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
d9d18af6 DM |
853 | /* preserve pad nature, but also mark as not live |
854 | * for any closure capturing */ | |
2740392c | 855 | SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE; |
8990e307 LW |
856 | } |
857 | break; | |
858 | case SAVEt_DELETE: | |
859 | ptr = SSPOPPTR; | |
85fbaab2 | 860 | hv = MUTABLE_HV(ptr); |
35d4f826 | 861 | i = SSPOPINT; |
8990e307 | 862 | ptr = SSPOPPTR; |
35d4f826 | 863 | (void)hv_delete(hv, (char*)ptr, i, G_DISCARD); |
4e4c362e | 864 | SvREFCNT_dec(hv); |
8aacddc1 | 865 | Safefree(ptr); |
8990e307 | 866 | break; |
146174a9 CB |
867 | case SAVEt_DESTRUCTOR_X: |
868 | ptr = SSPOPPTR; | |
acfe0abc | 869 | (*SSPOPDXPTR)(aTHX_ ptr); |
a0d0e21e LW |
870 | break; |
871 | case SAVEt_REGCONTEXT: | |
455ece5e | 872 | case SAVEt_ALLOC: |
161b7d16 | 873 | i = SSPOPINT; |
3280af22 | 874 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e | 875 | break; |
55497cff | 876 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 | 877 | i = SSPOPINT; |
3280af22 | 878 | PL_stack_sp = PL_stack_base + i; |
55497cff | 879 | break; |
ea8d6ae1 DB |
880 | case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */ |
881 | i = SSPOPINT; | |
882 | cxstack[i].blk_oldsp = SSPOPINT; | |
883 | break; | |
161b7d16 | 884 | case SAVEt_AELEM: /* array element */ |
ad64d0ec | 885 | value = MUTABLE_SV(SSPOPPTR); |
161b7d16 | 886 | i = SSPOPINT; |
502c6561 | 887 | av = MUTABLE_AV(SSPOPPTR); |
658aef79 | 888 | ptr = av_fetch(av,i,1); |
5dd42e15 DM |
889 | if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */ |
890 | SvREFCNT_dec(value); | |
4e4c362e GS |
891 | if (ptr) { |
892 | sv = *(SV**)ptr; | |
3280af22 | 893 | if (sv && sv != &PL_sv_undef) { |
ad64d0ec | 894 | if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied)) |
b37c2d43 | 895 | SvREFCNT_inc_void_NN(sv); |
4e4c362e GS |
896 | goto restore_sv; |
897 | } | |
898 | } | |
899 | SvREFCNT_dec(av); | |
900 | SvREFCNT_dec(value); | |
901 | break; | |
161b7d16 | 902 | case SAVEt_HELEM: /* hash element */ |
ad64d0ec NC |
903 | value = MUTABLE_SV(SSPOPPTR); |
904 | sv = MUTABLE_SV(SSPOPPTR); | |
85fbaab2 | 905 | hv = MUTABLE_HV(SSPOPPTR); |
161b7d16 | 906 | ptr = hv_fetch_ent(hv, sv, 1, 0); |
fd1b367e | 907 | SvREFCNT_dec(sv); |
4e4c362e | 908 | if (ptr) { |
35a4481c | 909 | const SV * const oval = HeVAL((HE*)ptr); |
3280af22 | 910 | if (oval && oval != &PL_sv_undef) { |
4e4c362e | 911 | ptr = &HeVAL((HE*)ptr); |
ad64d0ec | 912 | if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
b37c2d43 | 913 | SvREFCNT_inc_void(*(SV**)ptr); |
502c6561 | 914 | av = MUTABLE_AV(hv); /* what to refcnt_dec */ |
4e4c362e GS |
915 | goto restore_sv; |
916 | } | |
917 | } | |
918 | SvREFCNT_dec(hv); | |
4e4c362e GS |
919 | SvREFCNT_dec(value); |
920 | break; | |
462e5cf6 | 921 | case SAVEt_OP: |
533c011a | 922 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 | 923 | break; |
25eaa213 | 924 | case SAVEt_HINTS: |
045ac317 | 925 | if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) { |
ad64d0ec | 926 | SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv))); |
045ac317 RGS |
927 | GvHV(PL_hintgv) = NULL; |
928 | } | |
c28fe1ec NC |
929 | Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash); |
930 | PL_compiling.cop_hints_hash = (struct refcounted_he *) SSPOPPTR; | |
601cee3b | 931 | *(I32*)&PL_hints = (I32)SSPOPINT; |
dfa41748 | 932 | if (PL_hints & HINT_LOCALIZE_HH) { |
ad64d0ec | 933 | SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv))); |
85fbaab2 | 934 | GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR); |
5b9c0671 NC |
935 | assert(GvHV(PL_hintgv)); |
936 | } else if (!GvHV(PL_hintgv)) { | |
937 | /* Need to add a new one manually, else gv_fetchpv() can | |
938 | add one in this code: | |
939 | ||
940 | if (SvTYPE(gv) == SVt_PVGV) { | |
941 | if (add) { | |
942 | GvMULTI_on(gv); | |
943 | gv_init_sv(gv, sv_type); | |
944 | if (*name=='!' && sv_type == SVt_PVHV && len==1) | |
945 | require_errno(gv); | |
946 | } | |
947 | return gv; | |
948 | } | |
949 | ||
950 | and it won't have the magic set. */ | |
951 | ||
952 | HV *const hv = newHV(); | |
953 | hv_magic(hv, NULL, PERL_MAGIC_hints); | |
954 | GvHV(PL_hintgv) = hv; | |
dfa41748 | 955 | } |
5b9c0671 | 956 | assert(GvHV(PL_hintgv)); |
b3ac6de7 | 957 | break; |
cb50131a | 958 | case SAVEt_COMPPAD: |
f3548bdc | 959 | PL_comppad = (PAD*)SSPOPPTR; |
58ed4fbe | 960 | if (PL_comppad) |
cb50131a CB |
961 | PL_curpad = AvARRAY(PL_comppad); |
962 | else | |
4608196e | 963 | PL_curpad = NULL; |
cb50131a | 964 | break; |
09edbca0 | 965 | case SAVEt_PADSV_AND_MORTALIZE: |
c3564e5c | 966 | { |
35a4481c | 967 | const PADOFFSET off = (PADOFFSET)SSPOPLONG; |
09edbca0 | 968 | SV **svp; |
c3564e5c | 969 | ptr = SSPOPPTR; |
09edbca0 NC |
970 | assert (ptr); |
971 | svp = AvARRAY((PAD*)ptr) + off; | |
972 | /* This mortalizing used to be done by POPLOOP() via itersave. | |
973 | But as we have all the information here, we can do it here, | |
974 | save even having to have itersave in the struct. */ | |
975 | sv_2mortal(*svp); | |
ad64d0ec | 976 | *svp = MUTABLE_SV(SSPOPPTR); |
c3564e5c GS |
977 | } |
978 | break; | |
8b7059b1 DM |
979 | case SAVEt_SAVESWITCHSTACK: |
980 | { | |
981 | dSP; | |
502c6561 NC |
982 | AV *const t = MUTABLE_AV(SSPOPPTR); |
983 | AV *const f = MUTABLE_AV(SSPOPPTR); | |
8b7059b1 DM |
984 | SWITCHSTACK(t,f); |
985 | PL_curstackinfo->si_stack = f; | |
986 | } | |
987 | break; | |
14f338dc DM |
988 | case SAVEt_SET_SVFLAGS: |
989 | { | |
35a4481c AL |
990 | const U32 val = (U32)SSPOPINT; |
991 | const U32 mask = (U32)SSPOPINT; | |
ad64d0ec | 992 | sv = MUTABLE_SV(SSPOPPTR); |
14f338dc DM |
993 | SvFLAGS(sv) &= ~mask; |
994 | SvFLAGS(sv) |= val; | |
995 | } | |
996 | break; | |
95e06916 NC |
997 | |
998 | /* This would be a mathom, but Perl_save_svref() calls a static | |
999 | function, S_save_scalar_at(), so has to stay in this file. */ | |
2053acbf | 1000 | case SAVEt_SVREF: /* scalar reference */ |
ad64d0ec | 1001 | value = MUTABLE_SV(SSPOPPTR); |
2053acbf NC |
1002 | ptr = SSPOPPTR; |
1003 | av = NULL; /* what to refcnt_dec */ | |
1004 | goto restore_sv; | |
95e06916 NC |
1005 | |
1006 | /* These are only saved in mathoms.c */ | |
1007 | case SAVEt_NSTAB: | |
159b6efe | 1008 | gv = MUTABLE_GV(SSPOPPTR); |
ad64d0ec | 1009 | (void)sv_clear(MUTABLE_SV(gv)); |
95e06916 | 1010 | break; |
2053acbf NC |
1011 | case SAVEt_LONG: /* long reference */ |
1012 | ptr = SSPOPPTR; | |
1013 | *(long*)ptr = (long)SSPOPLONG; | |
1014 | break; | |
95e06916 NC |
1015 | case SAVEt_IV: /* IV reference */ |
1016 | ptr = SSPOPPTR; | |
1017 | *(IV*)ptr = (IV)SSPOPIV; | |
1018 | break; | |
1019 | ||
2053acbf NC |
1020 | case SAVEt_I16: /* I16 reference */ |
1021 | ptr = SSPOPPTR; | |
1022 | *(I16*)ptr = (I16)SSPOPINT; | |
1023 | break; | |
1024 | case SAVEt_I8: /* I8 reference */ | |
1025 | ptr = SSPOPPTR; | |
1026 | *(I8*)ptr = (I8)SSPOPINT; | |
1027 | break; | |
2053acbf NC |
1028 | case SAVEt_DESTRUCTOR: |
1029 | ptr = SSPOPPTR; | |
1030 | (*SSPOPDPTR)(ptr); | |
1031 | break; | |
fc15ae8f NC |
1032 | case SAVEt_COP_ARYBASE: |
1033 | ptr = SSPOPPTR; | |
1034 | i = SSPOPINT; | |
1035 | CopARYBASE_set((COP *)ptr, i); | |
1036 | break; | |
68da3b2f NC |
1037 | case SAVEt_COMPILE_WARNINGS: |
1038 | ptr = SSPOPPTR; | |
72dc9ed5 | 1039 | |
68da3b2f NC |
1040 | if (!specialWARN(PL_compiling.cop_warnings)) |
1041 | PerlMemShared_free(PL_compiling.cop_warnings); | |
72dc9ed5 | 1042 | |
10edeb5d | 1043 | PL_compiling.cop_warnings = (STRLEN*)ptr; |
72dc9ed5 | 1044 | break; |
1ade1aa1 NC |
1045 | case SAVEt_RE_STATE: |
1046 | { | |
1047 | const struct re_save_state *const state | |
1048 | = (struct re_save_state *) | |
1049 | (PL_savestack + PL_savestack_ix | |
1050 | - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE); | |
1051 | PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE; | |
1052 | ||
1ade1aa1 NC |
1053 | if (PL_reg_start_tmp != state->re_state_reg_start_tmp) { |
1054 | Safefree(PL_reg_start_tmp); | |
1ade1aa1 | 1055 | } |
1ade1aa1 NC |
1056 | if (PL_reg_poscache != state->re_state_reg_poscache) { |
1057 | Safefree(PL_reg_poscache); | |
1ade1aa1 | 1058 | } |
46ab3289 | 1059 | Copy(state, &PL_reg_state, 1, struct re_save_state); |
1ade1aa1 NC |
1060 | } |
1061 | break; | |
7c197c94 DM |
1062 | case SAVEt_PARSER: |
1063 | ptr = SSPOPPTR; | |
1064 | parser_free((yy_parser *) ptr); | |
1065 | break; | |
79072805 | 1066 | default: |
cea2e8a9 | 1067 | Perl_croak(aTHX_ "panic: leave_scope inconsistency"); |
79072805 LW |
1068 | } |
1069 | } | |
302c0c93 NC |
1070 | |
1071 | PL_tainted = was; | |
79072805 | 1072 | } |
8990e307 | 1073 | |
8990e307 | 1074 | void |
864dbfa3 | 1075 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
8990e307 | 1076 | { |
97aff369 | 1077 | dVAR; |
7918f24d NC |
1078 | |
1079 | PERL_ARGS_ASSERT_CX_DUMP; | |
1080 | ||
35ff7856 | 1081 | #ifdef DEBUGGING |
22c35a8c | 1082 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 | 1083 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 | 1084 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
146174a9 CB |
1085 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n", |
1086 | PTR2UV(cx->blk_oldcop)); | |
760ac839 LW |
1087 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
1088 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); | |
146174a9 CB |
1089 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n", |
1090 | PTR2UV(cx->blk_oldpm)); | |
760ac839 | 1091 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 | 1092 | } |
6b35e009 | 1093 | switch (CxTYPE(cx)) { |
8990e307 LW |
1094 | case CXt_NULL: |
1095 | case CXt_BLOCK: | |
1096 | break; | |
146174a9 | 1097 | case CXt_FORMAT: |
f9c764c5 NC |
1098 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%"UVxf"\n", |
1099 | PTR2UV(cx->blk_format.cv)); | |
1100 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%"UVxf"\n", | |
1101 | PTR2UV(cx->blk_format.gv)); | |
1102 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%"UVxf"\n", | |
1103 | PTR2UV(cx->blk_format.dfoutgv)); | |
1104 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n", | |
bafb2adc | 1105 | (int)CxHASARGS(cx)); |
f9c764c5 NC |
1106 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%"UVxf"\n", |
1107 | PTR2UV(cx->blk_format.retop)); | |
146174a9 | 1108 | break; |
8990e307 | 1109 | case CXt_SUB: |
146174a9 CB |
1110 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1111 | PTR2UV(cx->blk_sub.cv)); | |
760ac839 | 1112 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 | 1113 | (long)cx->blk_sub.olddepth); |
760ac839 | 1114 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
bafb2adc NC |
1115 | (int)CxHASARGS(cx)); |
1116 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx)); | |
f39bc417 DM |
1117 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n", |
1118 | PTR2UV(cx->blk_sub.retop)); | |
8990e307 LW |
1119 | break; |
1120 | case CXt_EVAL: | |
760ac839 | 1121 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
85a64632 | 1122 | (long)CxOLD_IN_EVAL(cx)); |
760ac839 | 1123 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
85a64632 NC |
1124 | PL_op_name[CxOLD_OP_TYPE(cx)], |
1125 | PL_op_desc[CxOLD_OP_TYPE(cx)]); | |
0f79a09d GS |
1126 | if (cx->blk_eval.old_namesv) |
1127 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", | |
aa07b2f6 | 1128 | SvPVX_const(cx->blk_eval.old_namesv)); |
146174a9 CB |
1129 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n", |
1130 | PTR2UV(cx->blk_eval.old_eval_root)); | |
f39bc417 DM |
1131 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n", |
1132 | PTR2UV(cx->blk_eval.retop)); | |
8990e307 LW |
1133 | break; |
1134 | ||
c6fdafd0 | 1135 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1136 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1137 | case CXt_LOOP_FOR: |
1138 | case CXt_LOOP_PLAIN: | |
0cbdab38 | 1139 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx)); |
760ac839 | 1140 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 | 1141 | (long)cx->blk_loop.resetsp); |
022eaa24 NC |
1142 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%"UVxf"\n", |
1143 | PTR2UV(cx->blk_loop.my_op)); | |
146174a9 | 1144 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n", |
022eaa24 | 1145 | PTR2UV(CX_LOOP_NEXTOP_GET(cx))); |
d01136d6 | 1146 | /* XXX: not accurate for LAZYSV/IV */ |
146174a9 | 1147 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n", |
d01136d6 BS |
1148 | PTR2UV(cx->blk_loop.state_u.ary.ary)); |
1149 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", | |
1150 | (long)cx->blk_loop.state_u.ary.ix); | |
146174a9 CB |
1151 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n", |
1152 | PTR2UV(CxITERVAR(cx))); | |
8990e307 LW |
1153 | break; |
1154 | ||
1155 | case CXt_SUBST: | |
760ac839 | 1156 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 | 1157 | (long)cx->sb_iters); |
760ac839 | 1158 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 | 1159 | (long)cx->sb_maxiters); |
35ef4773 GS |
1160 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
1161 | (long)cx->sb_rflags); | |
760ac839 | 1162 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
c5bed6a7 | 1163 | (long)CxONCE(cx)); |
760ac839 | 1164 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 | 1165 | cx->sb_orig); |
146174a9 CB |
1166 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n", |
1167 | PTR2UV(cx->sb_dstr)); | |
1168 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n", | |
1169 | PTR2UV(cx->sb_targ)); | |
1170 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n", | |
1171 | PTR2UV(cx->sb_s)); | |
1172 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n", | |
1173 | PTR2UV(cx->sb_m)); | |
1174 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n", | |
1175 | PTR2UV(cx->sb_strend)); | |
1176 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n", | |
1177 | PTR2UV(cx->sb_rxres)); | |
8990e307 LW |
1178 | break; |
1179 | } | |
65e66c80 | 1180 | #else |
96a5add6 | 1181 | PERL_UNUSED_CONTEXT; |
65e66c80 | 1182 | PERL_UNUSED_ARG(cx); |
17c3b450 | 1183 | #endif /* DEBUGGING */ |
35ff7856 | 1184 | } |
241d1a3b NC |
1185 | |
1186 | /* | |
1187 | * Local variables: | |
1188 | * c-indentation-style: bsd | |
1189 | * c-basic-offset: 4 | |
1190 | * indent-tabs-mode: t | |
1191 | * End: | |
1192 | * | |
37442d52 RGS |
1193 | * ex: set ts=8 sts=4 sw=4 noet: |
1194 | */ |