Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* scope.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
b5f8cc5c | 4 | * 2000, 2001, 2002, 2003, 2004, 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 | ||
ddfa107c | 16 | /* This file contains functions to manipulate several of Perl's stacks; |
166f8a29 DM |
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; | |
e336de0d GS |
80 | New(56, si, 1, PERL_SI); |
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; |
9965345d JH |
91 | New(56, si->si_cxstack, cxitems, PERL_CONTEXT); |
92 | /* Without any kind of initialising PUSHSUBST() | |
93 | * in pp_subst() will read uninitialised heap. */ | |
94 | Poison(si->si_cxstack, cxitems, PERL_CONTEXT); | |
e336de0d GS |
95 | return si; |
96 | } | |
97 | ||
79072805 | 98 | I32 |
864dbfa3 | 99 | Perl_cxinc(pTHX) |
79072805 | 100 | { |
4fc93207 | 101 | 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. */ | |
106 | Poison(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT); | |
79072805 LW |
107 | return cxstack_ix + 1; |
108 | } | |
109 | ||
79072805 | 110 | void |
864dbfa3 | 111 | Perl_push_scope(pTHX) |
79072805 | 112 | { |
3280af22 NIS |
113 | if (PL_scopestack_ix == PL_scopestack_max) { |
114 | PL_scopestack_max = GROW(PL_scopestack_max); | |
115 | Renew(PL_scopestack, PL_scopestack_max, I32); | |
79072805 | 116 | } |
3280af22 | 117 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 LW |
118 | |
119 | } | |
120 | ||
121 | void | |
864dbfa3 | 122 | Perl_pop_scope(pTHX) |
79072805 | 123 | { |
3280af22 | 124 | I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 | 125 | LEAVE_SCOPE(oldsave); |
79072805 LW |
126 | } |
127 | ||
128 | void | |
864dbfa3 | 129 | Perl_markstack_grow(pTHX) |
a0d0e21e | 130 | { |
3280af22 | 131 | I32 oldmax = PL_markstack_max - PL_markstack; |
2ce36478 | 132 | I32 newmax = GROW(oldmax); |
a0d0e21e | 133 | |
3280af22 NIS |
134 | Renew(PL_markstack, newmax, I32); |
135 | PL_markstack_ptr = PL_markstack + oldmax; | |
136 | PL_markstack_max = PL_markstack + newmax; | |
a0d0e21e LW |
137 | } |
138 | ||
139 | void | |
864dbfa3 | 140 | Perl_savestack_grow(pTHX) |
79072805 | 141 | { |
8aacddc1 | 142 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
3280af22 | 143 | Renew(PL_savestack, PL_savestack_max, ANY); |
79072805 LW |
144 | } |
145 | ||
4b3c1a47 AE |
146 | void |
147 | Perl_savestack_grow_cnt(pTHX_ I32 need) | |
148 | { | |
149 | PL_savestack_max = PL_savestack_ix + need; | |
150 | Renew(PL_savestack, PL_savestack_max, ANY); | |
151 | } | |
152 | ||
2ce36478 SM |
153 | #undef GROW |
154 | ||
79072805 | 155 | void |
864dbfa3 | 156 | Perl_tmps_grow(pTHX_ I32 n) |
677b06e3 | 157 | { |
677b06e3 GS |
158 | #ifndef STRESS_REALLOC |
159 | if (n < 128) | |
160 | n = (PL_tmps_max < 512) ? 128 : 512; | |
161 | #endif | |
162 | PL_tmps_max = PL_tmps_ix + n + 1; | |
163 | Renew(PL_tmps_stack, PL_tmps_max, SV*); | |
164 | } | |
165 | ||
166 | ||
167 | void | |
864dbfa3 | 168 | Perl_free_tmps(pTHX) |
79072805 LW |
169 | { |
170 | /* XXX should tmps_floor live in cxstack? */ | |
3280af22 NIS |
171 | I32 myfloor = PL_tmps_floor; |
172 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ | |
173 | SV* sv = PL_tmps_stack[PL_tmps_ix]; | |
174 | PL_tmps_stack[PL_tmps_ix--] = Nullsv; | |
8aacddc1 | 175 | if (sv && sv != &PL_sv_undef) { |
463ee0b2 | 176 | SvTEMP_off(sv); |
8990e307 | 177 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 | 178 | } |
79072805 LW |
179 | } |
180 | } | |
181 | ||
76e3520e | 182 | STATIC SV * |
cea2e8a9 | 183 | S_save_scalar_at(pTHX_ SV **sptr) |
79072805 LW |
184 | { |
185 | register SV *sv; | |
7a4c00b4 | 186 | SV *osv = *sptr; |
79072805 | 187 | |
7a4c00b4 | 188 | sv = *sptr = NEWSV(0,0); |
a0d0e21e | 189 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
ac117f44 | 190 | MAGIC *mg; |
79072805 | 191 | sv_upgrade(sv, SvTYPE(osv)); |
a0d0e21e | 192 | if (SvGMAGICAL(osv)) { |
3280af22 | 193 | bool oldtainted = PL_tainted; |
5cfc7842 | 194 | mg_get(osv); /* note, can croak! */ |
14befaf4 DM |
195 | if (PL_tainting && PL_tainted && |
196 | (mg = mg_find(osv, PERL_MAGIC_taint))) { | |
748a9306 LW |
197 | SAVESPTR(mg->mg_obj); |
198 | mg->mg_obj = osv; | |
199 | } | |
a0d0e21e | 200 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
8aacddc1 | 201 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
3280af22 | 202 | PL_tainted = oldtainted; |
a0d0e21e | 203 | } |
79072805 | 204 | SvMAGIC(sv) = SvMAGIC(osv); |
ac117f44 RGS |
205 | /* if it's a special scalar or if it has no 'set' magic, |
206 | * propagate the SvREADONLY flag. --rgs 20030922 */ | |
207 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
dda0e828 RGS |
208 | if (mg->mg_type == '\0' |
209 | || !(mg->mg_virtual && mg->mg_virtual->svt_set)) | |
ac117f44 RGS |
210 | { |
211 | SvFLAGS(sv) |= SvREADONLY(osv); | |
212 | break; | |
213 | } | |
214 | } | |
215 | SvFLAGS(sv) |= SvMAGICAL(osv); | |
2d5e9e5d JH |
216 | /* XXX SvMAGIC() is *shared* between osv and sv. This can |
217 | * lead to coredumps when both SVs are destroyed without one | |
218 | * of their SvMAGIC() slots being NULLed. */ | |
3280af22 | 219 | PL_localizing = 1; |
79072805 | 220 | SvSETMAGIC(sv); |
3280af22 | 221 | PL_localizing = 0; |
79072805 LW |
222 | } |
223 | return sv; | |
224 | } | |
225 | ||
7a4c00b4 | 226 | SV * |
864dbfa3 | 227 | Perl_save_scalar(pTHX_ GV *gv) |
7a4c00b4 | 228 | { |
4e4c362e | 229 | SV **sptr = &GvSV(gv); |
7a4c00b4 | 230 | SSCHECK(3); |
4e4c362e GS |
231 | SSPUSHPTR(SvREFCNT_inc(gv)); |
232 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
7a4c00b4 | 233 | SSPUSHINT(SAVEt_SV); |
4e4c362e | 234 | return save_scalar_at(sptr); |
7a4c00b4 | 235 | } |
236 | ||
237 | SV* | |
864dbfa3 | 238 | Perl_save_svref(pTHX_ SV **sptr) |
7a4c00b4 | 239 | { |
240 | SSCHECK(3); | |
241 | SSPUSHPTR(sptr); | |
4e4c362e | 242 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 | 243 | SSPUSHINT(SAVEt_SVREF); |
244 | return save_scalar_at(sptr); | |
245 | } | |
246 | ||
f4dd75d9 | 247 | /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to |
b9d12d37 GS |
248 | * restore a global SV to its prior contents, freeing new value. */ |
249 | void | |
864dbfa3 | 250 | Perl_save_generic_svref(pTHX_ SV **sptr) |
b9d12d37 | 251 | { |
b9d12d37 GS |
252 | SSCHECK(3); |
253 | SSPUSHPTR(sptr); | |
254 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
255 | SSPUSHINT(SAVEt_GENERIC_SVREF); | |
256 | } | |
257 | ||
f4dd75d9 GS |
258 | /* Like save_pptr(), but also Safefree()s the new value if it is different |
259 | * from the old one. Can be used to restore a global char* to its prior | |
260 | * contents, freeing new value. */ | |
261 | void | |
262 | Perl_save_generic_pvref(pTHX_ char **str) | |
263 | { | |
f4dd75d9 GS |
264 | SSCHECK(3); |
265 | SSPUSHPTR(str); | |
266 | SSPUSHPTR(*str); | |
267 | SSPUSHINT(SAVEt_GENERIC_PVREF); | |
268 | } | |
269 | ||
05ec9bb3 NIS |
270 | /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree(). |
271 | * Can be used to restore a shared global char* to its prior | |
272 | * contents, freeing new value. */ | |
273 | void | |
274 | Perl_save_shared_pvref(pTHX_ char **str) | |
275 | { | |
276 | SSCHECK(3); | |
277 | SSPUSHPTR(str); | |
278 | SSPUSHPTR(*str); | |
279 | SSPUSHINT(SAVEt_SHARED_PVREF); | |
280 | } | |
281 | ||
14f338dc DM |
282 | /* set the SvFLAGS specified by mask to the values in val */ |
283 | ||
284 | void | |
285 | Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val) | |
286 | { | |
287 | SSCHECK(4); | |
288 | SSPUSHPTR(sv); | |
289 | SSPUSHINT(mask); | |
290 | SSPUSHINT(val); | |
291 | SSPUSHINT(SAVEt_SET_SVFLAGS); | |
292 | } | |
293 | ||
79072805 | 294 | void |
864dbfa3 | 295 | Perl_save_gp(pTHX_ GV *gv, I32 empty) |
79072805 | 296 | { |
4b3c1a47 | 297 | SSGROW(6); |
fb73857a | 298 | SSPUSHIV((IV)SvLEN(gv)); |
299 | SvLEN(gv) = 0; /* forget that anything was allocated here */ | |
300 | SSPUSHIV((IV)SvCUR(gv)); | |
301 | SSPUSHPTR(SvPVX(gv)); | |
302 | SvPOK_off(gv); | |
4633a7c4 | 303 | SSPUSHPTR(SvREFCNT_inc(gv)); |
5f05dabc | 304 | SSPUSHPTR(GvGP(gv)); |
79072805 LW |
305 | SSPUSHINT(SAVEt_GP); |
306 | ||
5f05dabc | 307 | if (empty) { |
308 | register GP *gp; | |
fae75791 | 309 | |
146174a9 CB |
310 | Newz(602, gp, 1, GP); |
311 | ||
fae75791 | 312 | if (GvCVu(gv)) |
3280af22 | 313 | PL_sub_generation++; /* taking a method out of circulation */ |
146174a9 CB |
314 | if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) { |
315 | gp->gp_io = newIO(); | |
316 | IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START; | |
317 | } | |
44a8e56a | 318 | GvGP(gv) = gp_ref(gp); |
5f05dabc | 319 | GvSV(gv) = NEWSV(72,0); |
146174a9 | 320 | GvLINE(gv) = CopLINE(PL_curcop); |
94051fc1 | 321 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : ""; |
5f05dabc | 322 | GvEGV(gv) = gv; |
323 | } | |
324 | else { | |
44a8e56a | 325 | gp_ref(GvGP(gv)); |
5f05dabc | 326 | GvINTRO_on(gv); |
327 | } | |
79072805 | 328 | } |
79072805 | 329 | |
79072805 | 330 | AV * |
864dbfa3 | 331 | Perl_save_ary(pTHX_ GV *gv) |
79072805 | 332 | { |
67a38de0 NIS |
333 | AV *oav = GvAVn(gv); |
334 | AV *av; | |
fb73857a | 335 | |
67a38de0 NIS |
336 | if (!AvREAL(oav) && AvREIFY(oav)) |
337 | av_reify(oav); | |
79072805 LW |
338 | SSCHECK(3); |
339 | SSPUSHPTR(gv); | |
67a38de0 | 340 | SSPUSHPTR(oav); |
79072805 LW |
341 | SSPUSHINT(SAVEt_AV); |
342 | ||
343 | GvAV(gv) = Null(AV*); | |
fb73857a | 344 | av = GvAVn(gv); |
345 | if (SvMAGIC(oav)) { | |
346 | SvMAGIC(av) = SvMAGIC(oav); | |
32da55ab | 347 | SvFLAGS((SV*)av) |= SvMAGICAL(oav); |
fb73857a | 348 | SvMAGICAL_off(oav); |
349 | SvMAGIC(oav) = 0; | |
3280af22 | 350 | PL_localizing = 1; |
fb73857a | 351 | SvSETMAGIC((SV*)av); |
3280af22 | 352 | PL_localizing = 0; |
fb73857a | 353 | } |
354 | return av; | |
79072805 LW |
355 | } |
356 | ||
357 | HV * | |
864dbfa3 | 358 | Perl_save_hash(pTHX_ GV *gv) |
79072805 | 359 | { |
fb73857a | 360 | HV *ohv, *hv; |
361 | ||
79072805 LW |
362 | SSCHECK(3); |
363 | SSPUSHPTR(gv); | |
fb73857a | 364 | SSPUSHPTR(ohv = GvHVn(gv)); |
79072805 LW |
365 | SSPUSHINT(SAVEt_HV); |
366 | ||
367 | GvHV(gv) = Null(HV*); | |
fb73857a | 368 | hv = GvHVn(gv); |
369 | if (SvMAGIC(ohv)) { | |
370 | SvMAGIC(hv) = SvMAGIC(ohv); | |
32da55ab | 371 | SvFLAGS((SV*)hv) |= SvMAGICAL(ohv); |
fb73857a | 372 | SvMAGICAL_off(ohv); |
373 | SvMAGIC(ohv) = 0; | |
3280af22 | 374 | PL_localizing = 1; |
fb73857a | 375 | SvSETMAGIC((SV*)hv); |
3280af22 | 376 | PL_localizing = 0; |
fb73857a | 377 | } |
378 | return hv; | |
79072805 LW |
379 | } |
380 | ||
381 | void | |
864dbfa3 | 382 | Perl_save_item(pTHX_ register SV *item) |
79072805 | 383 | { |
f46d017c | 384 | register SV *sv = NEWSV(0,0); |
79072805 | 385 | |
f46d017c | 386 | sv_setsv(sv,item); |
79072805 LW |
387 | SSCHECK(3); |
388 | SSPUSHPTR(item); /* remember the pointer */ | |
79072805 LW |
389 | SSPUSHPTR(sv); /* remember the value */ |
390 | SSPUSHINT(SAVEt_ITEM); | |
391 | } | |
392 | ||
393 | void | |
864dbfa3 | 394 | Perl_save_int(pTHX_ int *intp) |
79072805 LW |
395 | { |
396 | SSCHECK(3); | |
397 | SSPUSHINT(*intp); | |
398 | SSPUSHPTR(intp); | |
399 | SSPUSHINT(SAVEt_INT); | |
400 | } | |
401 | ||
402 | void | |
864dbfa3 | 403 | Perl_save_long(pTHX_ long int *longp) |
85e6fe83 LW |
404 | { |
405 | SSCHECK(3); | |
406 | SSPUSHLONG(*longp); | |
407 | SSPUSHPTR(longp); | |
408 | SSPUSHINT(SAVEt_LONG); | |
409 | } | |
410 | ||
411 | void | |
9febdf04 RH |
412 | Perl_save_bool(pTHX_ bool *boolp) |
413 | { | |
414 | SSCHECK(3); | |
415 | SSPUSHBOOL(*boolp); | |
416 | SSPUSHPTR(boolp); | |
417 | SSPUSHINT(SAVEt_BOOL); | |
418 | } | |
419 | ||
420 | void | |
864dbfa3 | 421 | Perl_save_I32(pTHX_ I32 *intp) |
79072805 LW |
422 | { |
423 | SSCHECK(3); | |
424 | SSPUSHINT(*intp); | |
425 | SSPUSHPTR(intp); | |
426 | SSPUSHINT(SAVEt_I32); | |
427 | } | |
428 | ||
a0d0e21e | 429 | void |
864dbfa3 | 430 | Perl_save_I16(pTHX_ I16 *intp) |
55497cff | 431 | { |
432 | SSCHECK(3); | |
433 | SSPUSHINT(*intp); | |
434 | SSPUSHPTR(intp); | |
435 | SSPUSHINT(SAVEt_I16); | |
436 | } | |
437 | ||
438 | void | |
146174a9 CB |
439 | Perl_save_I8(pTHX_ I8 *bytep) |
440 | { | |
146174a9 CB |
441 | SSCHECK(3); |
442 | SSPUSHINT(*bytep); | |
443 | SSPUSHPTR(bytep); | |
444 | SSPUSHINT(SAVEt_I8); | |
445 | } | |
446 | ||
447 | void | |
864dbfa3 | 448 | Perl_save_iv(pTHX_ IV *ivp) |
a0d0e21e LW |
449 | { |
450 | SSCHECK(3); | |
4aa0a1f7 | 451 | SSPUSHIV(*ivp); |
a0d0e21e LW |
452 | SSPUSHPTR(ivp); |
453 | SSPUSHINT(SAVEt_IV); | |
454 | } | |
455 | ||
85e6fe83 LW |
456 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
457 | * force word-alignment and we'll miss the pointer. | |
458 | */ | |
459 | void | |
864dbfa3 | 460 | Perl_save_pptr(pTHX_ char **pptr) |
85e6fe83 LW |
461 | { |
462 | SSCHECK(3); | |
463 | SSPUSHPTR(*pptr); | |
464 | SSPUSHPTR(pptr); | |
465 | SSPUSHINT(SAVEt_PPTR); | |
466 | } | |
467 | ||
79072805 | 468 | void |
146174a9 CB |
469 | Perl_save_vptr(pTHX_ void *ptr) |
470 | { | |
146174a9 CB |
471 | SSCHECK(3); |
472 | SSPUSHPTR(*(char**)ptr); | |
473 | SSPUSHPTR(ptr); | |
474 | SSPUSHINT(SAVEt_VPTR); | |
475 | } | |
476 | ||
477 | void | |
864dbfa3 | 478 | Perl_save_sptr(pTHX_ SV **sptr) |
79072805 LW |
479 | { |
480 | SSCHECK(3); | |
481 | SSPUSHPTR(*sptr); | |
482 | SSPUSHPTR(sptr); | |
483 | SSPUSHINT(SAVEt_SPTR); | |
484 | } | |
485 | ||
c3564e5c GS |
486 | void |
487 | Perl_save_padsv(pTHX_ PADOFFSET off) | |
488 | { | |
c3564e5c | 489 | SSCHECK(4); |
f3548bdc | 490 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
c3564e5c | 491 | SSPUSHPTR(PL_curpad[off]); |
f3548bdc | 492 | SSPUSHPTR(PL_comppad); |
c3564e5c GS |
493 | SSPUSHLONG((long)off); |
494 | SSPUSHINT(SAVEt_PADSV); | |
495 | } | |
496 | ||
54b9620d | 497 | SV ** |
864dbfa3 | 498 | Perl_save_threadsv(pTHX_ PADOFFSET i) |
54b9620d | 499 | { |
cea2e8a9 | 500 | Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl"); |
54b9620d | 501 | return 0; |
54b9620d MB |
502 | } |
503 | ||
79072805 | 504 | void |
864dbfa3 | 505 | Perl_save_nogv(pTHX_ GV *gv) |
79072805 LW |
506 | { |
507 | SSCHECK(2); | |
508 | SSPUSHPTR(gv); | |
509 | SSPUSHINT(SAVEt_NSTAB); | |
510 | } | |
511 | ||
512 | void | |
864dbfa3 | 513 | Perl_save_hptr(pTHX_ HV **hptr) |
79072805 LW |
514 | { |
515 | SSCHECK(3); | |
85e6fe83 | 516 | SSPUSHPTR(*hptr); |
79072805 LW |
517 | SSPUSHPTR(hptr); |
518 | SSPUSHINT(SAVEt_HPTR); | |
519 | } | |
520 | ||
521 | void | |
864dbfa3 | 522 | Perl_save_aptr(pTHX_ AV **aptr) |
79072805 LW |
523 | { |
524 | SSCHECK(3); | |
85e6fe83 | 525 | SSPUSHPTR(*aptr); |
79072805 LW |
526 | SSPUSHPTR(aptr); |
527 | SSPUSHINT(SAVEt_APTR); | |
528 | } | |
529 | ||
530 | void | |
864dbfa3 | 531 | Perl_save_freesv(pTHX_ SV *sv) |
8990e307 LW |
532 | { |
533 | SSCHECK(2); | |
534 | SSPUSHPTR(sv); | |
535 | SSPUSHINT(SAVEt_FREESV); | |
536 | } | |
537 | ||
538 | void | |
26d9b02f JH |
539 | Perl_save_mortalizesv(pTHX_ SV *sv) |
540 | { | |
541 | SSCHECK(2); | |
542 | SSPUSHPTR(sv); | |
543 | SSPUSHINT(SAVEt_MORTALIZESV); | |
544 | } | |
545 | ||
546 | void | |
864dbfa3 | 547 | Perl_save_freeop(pTHX_ OP *o) |
8990e307 LW |
548 | { |
549 | SSCHECK(2); | |
11343788 | 550 | SSPUSHPTR(o); |
8990e307 LW |
551 | SSPUSHINT(SAVEt_FREEOP); |
552 | } | |
553 | ||
554 | void | |
864dbfa3 | 555 | Perl_save_freepv(pTHX_ char *pv) |
8990e307 LW |
556 | { |
557 | SSCHECK(2); | |
558 | SSPUSHPTR(pv); | |
559 | SSPUSHINT(SAVEt_FREEPV); | |
560 | } | |
561 | ||
562 | void | |
864dbfa3 | 563 | Perl_save_clearsv(pTHX_ SV **svp) |
8990e307 | 564 | { |
f3548bdc | 565 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
8990e307 | 566 | SSCHECK(2); |
3280af22 | 567 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 | 568 | SSPUSHINT(SAVEt_CLEARSV); |
d9d18af6 | 569 | SvPADSTALE_off(*svp); /* mark lexical as active */ |
8990e307 LW |
570 | } |
571 | ||
572 | void | |
864dbfa3 | 573 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
8990e307 LW |
574 | { |
575 | SSCHECK(4); | |
576 | SSPUSHINT(klen); | |
577 | SSPUSHPTR(key); | |
4e4c362e | 578 | SSPUSHPTR(SvREFCNT_inc(hv)); |
8990e307 LW |
579 | SSPUSHINT(SAVEt_DELETE); |
580 | } | |
581 | ||
582 | void | |
864dbfa3 | 583 | Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg) |
79072805 LW |
584 | { |
585 | register SV *sv; | |
586 | register I32 i; | |
587 | ||
79072805 | 588 | for (i = 1; i <= maxsarg; i++) { |
79072805 LW |
589 | sv = NEWSV(0,0); |
590 | sv_setsv(sv,sarg[i]); | |
f46d017c GS |
591 | SSCHECK(3); |
592 | SSPUSHPTR(sarg[i]); /* remember the pointer */ | |
79072805 LW |
593 | SSPUSHPTR(sv); /* remember the value */ |
594 | SSPUSHINT(SAVEt_ITEM); | |
595 | } | |
596 | } | |
597 | ||
598 | void | |
146174a9 | 599 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
a0d0e21e LW |
600 | { |
601 | SSCHECK(3); | |
602 | SSPUSHDPTR(f); | |
603 | SSPUSHPTR(p); | |
604 | SSPUSHINT(SAVEt_DESTRUCTOR); | |
605 | } | |
606 | ||
607 | void | |
146174a9 CB |
608 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
609 | { | |
146174a9 CB |
610 | SSCHECK(3); |
611 | SSPUSHDXPTR(f); | |
612 | SSPUSHPTR(p); | |
613 | SSPUSHINT(SAVEt_DESTRUCTOR_X); | |
614 | } | |
615 | ||
616 | void | |
864dbfa3 | 617 | Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr) |
4e4c362e | 618 | { |
bfc4de9f | 619 | SV *sv; |
4e4c362e GS |
620 | SSCHECK(4); |
621 | SSPUSHPTR(SvREFCNT_inc(av)); | |
622 | SSPUSHINT(idx); | |
623 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
624 | SSPUSHINT(SAVEt_AELEM); | |
5dd42e15 DM |
625 | /* if it gets reified later, the restore will have the wrong refcnt */ |
626 | if (!AvREAL(av) && AvREIFY(av)) | |
627 | SvREFCNT_inc(*sptr); | |
4e4c362e | 628 | save_scalar_at(sptr); |
bfc4de9f DM |
629 | sv = *sptr; |
630 | /* If we're localizing a tied array element, this new sv | |
631 | * won't actually be stored in the array - so it won't get | |
632 | * reaped when the localize ends. Ensure it gets reaped by | |
633 | * mortifying it instead. DAPM */ | |
634 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
635 | sv_2mortal(sv); | |
4e4c362e GS |
636 | } |
637 | ||
638 | void | |
864dbfa3 | 639 | Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr) |
4e4c362e | 640 | { |
bfc4de9f | 641 | SV *sv; |
4e4c362e GS |
642 | SSCHECK(4); |
643 | SSPUSHPTR(SvREFCNT_inc(hv)); | |
644 | SSPUSHPTR(SvREFCNT_inc(key)); | |
645 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
646 | SSPUSHINT(SAVEt_HELEM); | |
647 | save_scalar_at(sptr); | |
bfc4de9f DM |
648 | sv = *sptr; |
649 | /* If we're localizing a tied hash element, this new sv | |
650 | * won't actually be stored in the hash - so it won't get | |
651 | * reaped when the localize ends. Ensure it gets reaped by | |
652 | * mortifying it instead. DAPM */ | |
653 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
654 | sv_2mortal(sv); | |
4e4c362e GS |
655 | } |
656 | ||
657 | void | |
864dbfa3 | 658 | Perl_save_op(pTHX) |
462e5cf6 | 659 | { |
462e5cf6 | 660 | SSCHECK(2); |
533c011a | 661 | SSPUSHPTR(PL_op); |
462e5cf6 MB |
662 | SSPUSHINT(SAVEt_OP); |
663 | } | |
664 | ||
455ece5e | 665 | I32 |
864dbfa3 | 666 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
455ece5e | 667 | { |
455ece5e | 668 | register I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
8aacddc1 | 669 | - (char*)PL_savestack); |
455ece5e AD |
670 | register I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
671 | ||
672 | /* SSCHECK may not be good enough */ | |
673 | while (PL_savestack_ix + elems + 2 > PL_savestack_max) | |
8aacddc1 | 674 | savestack_grow(); |
455ece5e AD |
675 | |
676 | PL_savestack_ix += elems; | |
677 | SSPUSHINT(elems); | |
678 | SSPUSHINT(SAVEt_ALLOC); | |
679 | return start; | |
680 | } | |
681 | ||
462e5cf6 | 682 | void |
864dbfa3 | 683 | Perl_leave_scope(pTHX_ I32 base) |
79072805 LW |
684 | { |
685 | register SV *sv; | |
686 | register SV *value; | |
687 | register GV *gv; | |
688 | register AV *av; | |
689 | register HV *hv; | |
690 | register void* ptr; | |
f4dd75d9 | 691 | register char* str; |
161b7d16 | 692 | I32 i; |
79072805 LW |
693 | |
694 | if (base < -1) | |
cea2e8a9 | 695 | Perl_croak(aTHX_ "panic: corrupt saved stack index"); |
3280af22 | 696 | while (PL_savestack_ix > base) { |
79072805 LW |
697 | switch (SSPOPINT) { |
698 | case SAVEt_ITEM: /* normal string */ | |
699 | value = (SV*)SSPOPPTR; | |
700 | sv = (SV*)SSPOPPTR; | |
701 | sv_replace(sv,value); | |
3280af22 | 702 | PL_localizing = 2; |
79072805 | 703 | SvSETMAGIC(sv); |
3280af22 | 704 | PL_localizing = 0; |
79072805 | 705 | break; |
8aacddc1 | 706 | case SAVEt_SV: /* scalar reference */ |
79072805 LW |
707 | value = (SV*)SSPOPPTR; |
708 | gv = (GV*)SSPOPPTR; | |
7a4c00b4 | 709 | ptr = &GvSV(gv); |
5dd42e15 | 710 | av = (AV*)gv; /* what to refcnt_dec */ |
7a4c00b4 | 711 | goto restore_sv; |
8aacddc1 | 712 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
f4dd75d9 GS |
713 | str = (char*)SSPOPPTR; |
714 | ptr = SSPOPPTR; | |
715 | if (*(char**)ptr != str) { | |
716 | Safefree(*(char**)ptr); | |
717 | *(char**)ptr = str; | |
718 | } | |
719 | break; | |
05ec9bb3 NIS |
720 | case SAVEt_SHARED_PVREF: /* shared pv */ |
721 | str = (char*)SSPOPPTR; | |
722 | ptr = SSPOPPTR; | |
723 | if (*(char**)ptr != str) { | |
5e54c26f | 724 | #ifdef NETWARE |
9ecbcc42 | 725 | PerlMem_free(*(char**)ptr); |
5e54c26f | 726 | #else |
05ec9bb3 | 727 | PerlMemShared_free(*(char**)ptr); |
5e54c26f | 728 | #endif |
05ec9bb3 NIS |
729 | *(char**)ptr = str; |
730 | } | |
731 | break; | |
8aacddc1 | 732 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
b9d12d37 GS |
733 | value = (SV*)SSPOPPTR; |
734 | ptr = SSPOPPTR; | |
f4dd75d9 GS |
735 | sv = *(SV**)ptr; |
736 | *(SV**)ptr = value; | |
737 | SvREFCNT_dec(sv); | |
b9d12d37 GS |
738 | SvREFCNT_dec(value); |
739 | break; | |
8aacddc1 | 740 | case SAVEt_SVREF: /* scalar reference */ |
7a4c00b4 | 741 | value = (SV*)SSPOPPTR; |
79072805 | 742 | ptr = SSPOPPTR; |
5dd42e15 | 743 | av = Nullav; /* what to refcnt_dec */ |
7a4c00b4 | 744 | restore_sv: |
79072805 | 745 | sv = *(SV**)ptr; |
146174a9 | 746 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
54b9620d | 747 | "restore svref: %p %p:%s -> %p:%s\n", |
8aacddc1 | 748 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
cdec4f49 JH |
749 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
750 | SvTYPE(sv) != SVt_PVGV) | |
751 | { | |
a0d0e21e LW |
752 | (void)SvUPGRADE(value, SvTYPE(sv)); |
753 | SvMAGIC(value) = SvMAGIC(sv); | |
754 | SvFLAGS(value) |= SvMAGICAL(sv); | |
755 | SvMAGICAL_off(sv); | |
79072805 | 756 | SvMAGIC(sv) = 0; |
a0d0e21e | 757 | } |
2d5e9e5d JH |
758 | /* XXX This branch is pretty bogus. This code irretrievably |
759 | * clears(!) the magic on the SV (either to avoid further | |
760 | * croaking that might ensue when the SvSETMAGIC() below is | |
761 | * called, or to avoid two different SVs pointing at the same | |
762 | * SvMAGIC()). This needs a total rethink. --GSAR */ | |
cdec4f49 JH |
763 | else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) && |
764 | SvTYPE(value) != SVt_PVGV) | |
765 | { | |
7a4c00b4 | 766 | SvFLAGS(value) |= (SvFLAGS(value) & |
8aacddc1 | 767 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
7a4c00b4 | 768 | SvMAGICAL_off(value); |
2d5e9e5d JH |
769 | /* XXX this is a leak when we get here because the |
770 | * mg_get() in save_scalar_at() croaked */ | |
771 | SvMAGIC(value) = 0; | |
7a4c00b4 | 772 | } |
a0d0e21e | 773 | *(SV**)ptr = value; |
db733481 | 774 | SvREFCNT_dec(sv); |
3280af22 | 775 | PL_localizing = 2; |
a0d0e21e | 776 | SvSETMAGIC(value); |
3280af22 | 777 | PL_localizing = 0; |
4e4c362e | 778 | SvREFCNT_dec(value); |
5dd42e15 DM |
779 | if (av) /* actually an av, hv or gv */ |
780 | SvREFCNT_dec(av); | |
8aacddc1 NIS |
781 | break; |
782 | case SAVEt_AV: /* array reference */ | |
79072805 LW |
783 | av = (AV*)SSPOPPTR; |
784 | gv = (GV*)SSPOPPTR; | |
fb73857a | 785 | if (GvAV(gv)) { |
786 | AV *goner = GvAV(gv); | |
787 | SvMAGIC(av) = SvMAGIC(goner); | |
32da55ab | 788 | SvFLAGS((SV*)av) |= SvMAGICAL(goner); |
fb73857a | 789 | SvMAGICAL_off(goner); |
790 | SvMAGIC(goner) = 0; | |
791 | SvREFCNT_dec(goner); | |
792 | } | |
8aacddc1 | 793 | GvAV(gv) = av; |
fb73857a | 794 | if (SvMAGICAL(av)) { |
3280af22 | 795 | PL_localizing = 2; |
fb73857a | 796 | SvSETMAGIC((SV*)av); |
3280af22 | 797 | PL_localizing = 0; |
fb73857a | 798 | } |
8aacddc1 NIS |
799 | break; |
800 | case SAVEt_HV: /* hash reference */ | |
79072805 LW |
801 | hv = (HV*)SSPOPPTR; |
802 | gv = (GV*)SSPOPPTR; | |
fb73857a | 803 | if (GvHV(gv)) { |
804 | HV *goner = GvHV(gv); | |
805 | SvMAGIC(hv) = SvMAGIC(goner); | |
806 | SvFLAGS(hv) |= SvMAGICAL(goner); | |
807 | SvMAGICAL_off(goner); | |
808 | SvMAGIC(goner) = 0; | |
809 | SvREFCNT_dec(goner); | |
810 | } | |
8aacddc1 | 811 | GvHV(gv) = hv; |
fb73857a | 812 | if (SvMAGICAL(hv)) { |
3280af22 | 813 | PL_localizing = 2; |
fb73857a | 814 | SvSETMAGIC((SV*)hv); |
3280af22 | 815 | PL_localizing = 0; |
fb73857a | 816 | } |
8aacddc1 | 817 | break; |
79072805 LW |
818 | case SAVEt_INT: /* int reference */ |
819 | ptr = SSPOPPTR; | |
820 | *(int*)ptr = (int)SSPOPINT; | |
821 | break; | |
85e6fe83 LW |
822 | case SAVEt_LONG: /* long reference */ |
823 | ptr = SSPOPPTR; | |
824 | *(long*)ptr = (long)SSPOPLONG; | |
825 | break; | |
9febdf04 RH |
826 | case SAVEt_BOOL: /* bool reference */ |
827 | ptr = SSPOPPTR; | |
828 | *(bool*)ptr = (bool)SSPOPBOOL; | |
829 | break; | |
79072805 LW |
830 | case SAVEt_I32: /* I32 reference */ |
831 | ptr = SSPOPPTR; | |
832 | *(I32*)ptr = (I32)SSPOPINT; | |
833 | break; | |
55497cff | 834 | case SAVEt_I16: /* I16 reference */ |
835 | ptr = SSPOPPTR; | |
836 | *(I16*)ptr = (I16)SSPOPINT; | |
837 | break; | |
146174a9 CB |
838 | case SAVEt_I8: /* I8 reference */ |
839 | ptr = SSPOPPTR; | |
840 | *(I8*)ptr = (I8)SSPOPINT; | |
841 | break; | |
a0d0e21e LW |
842 | case SAVEt_IV: /* IV reference */ |
843 | ptr = SSPOPPTR; | |
844 | *(IV*)ptr = (IV)SSPOPIV; | |
845 | break; | |
79072805 LW |
846 | case SAVEt_SPTR: /* SV* reference */ |
847 | ptr = SSPOPPTR; | |
848 | *(SV**)ptr = (SV*)SSPOPPTR; | |
849 | break; | |
146174a9 | 850 | case SAVEt_VPTR: /* random* reference */ |
85e6fe83 LW |
851 | case SAVEt_PPTR: /* char* reference */ |
852 | ptr = SSPOPPTR; | |
853 | *(char**)ptr = (char*)SSPOPPTR; | |
854 | break; | |
79072805 LW |
855 | case SAVEt_HPTR: /* HV* reference */ |
856 | ptr = SSPOPPTR; | |
857 | *(HV**)ptr = (HV*)SSPOPPTR; | |
858 | break; | |
859 | case SAVEt_APTR: /* AV* reference */ | |
860 | ptr = SSPOPPTR; | |
861 | *(AV**)ptr = (AV*)SSPOPPTR; | |
862 | break; | |
863 | case SAVEt_NSTAB: | |
864 | gv = (GV*)SSPOPPTR; | |
1f96a9ed | 865 | (void)sv_clear((SV*)gv); |
79072805 | 866 | break; |
fb73857a | 867 | case SAVEt_GP: /* scalar reference */ |
79072805 LW |
868 | ptr = SSPOPPTR; |
869 | gv = (GV*)SSPOPPTR; | |
8aacddc1 NIS |
870 | if (SvPVX(gv) && SvLEN(gv) > 0) { |
871 | Safefree(SvPVX(gv)); | |
872 | } | |
873 | SvPVX(gv) = (char *)SSPOPPTR; | |
874 | SvCUR(gv) = (STRLEN)SSPOPIV; | |
875 | SvLEN(gv) = (STRLEN)SSPOPIV; | |
876 | gp_free(gv); | |
877 | GvGP(gv) = (GP*)ptr; | |
fae75791 | 878 | if (GvCVu(gv)) |
3280af22 | 879 | PL_sub_generation++; /* putting a method back into circulation */ |
4633a7c4 | 880 | SvREFCNT_dec(gv); |
8aacddc1 | 881 | break; |
8990e307 LW |
882 | case SAVEt_FREESV: |
883 | ptr = SSPOPPTR; | |
884 | SvREFCNT_dec((SV*)ptr); | |
885 | break; | |
26d9b02f JH |
886 | case SAVEt_MORTALIZESV: |
887 | ptr = SSPOPPTR; | |
888 | sv_2mortal((SV*)ptr); | |
889 | break; | |
8990e307 LW |
890 | case SAVEt_FREEOP: |
891 | ptr = SSPOPPTR; | |
f3548bdc | 892 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */ |
8990e307 LW |
893 | op_free((OP*)ptr); |
894 | break; | |
895 | case SAVEt_FREEPV: | |
896 | ptr = SSPOPPTR; | |
897 | Safefree((char*)ptr); | |
898 | break; | |
899 | case SAVEt_CLEARSV: | |
3280af22 | 900 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 | 901 | sv = *(SV**)ptr; |
dd2155a4 DM |
902 | |
903 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, | |
f3548bdc DM |
904 | "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n", |
905 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), | |
906 | (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), | |
dd2155a4 DM |
907 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" |
908 | )); | |
909 | ||
bc44cdaf GS |
910 | /* Can clear pad variable in place? */ |
911 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { | |
8aacddc1 NIS |
912 | /* |
913 | * if a my variable that was made readonly is going out of | |
914 | * scope, we want to remove the readonlyness so that it can | |
915 | * go out of scope quietly | |
8aacddc1 | 916 | */ |
a26e96df | 917 | if (SvPADMY(sv) && !SvFAKE(sv)) |
8aacddc1 NIS |
918 | SvREADONLY_off(sv); |
919 | ||
6fc92669 | 920 | if (SvTHINKFIRST(sv)) |
840a7b70 | 921 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF); |
a0d0e21e LW |
922 | if (SvMAGICAL(sv)) |
923 | mg_free(sv); | |
8990e307 LW |
924 | |
925 | switch (SvTYPE(sv)) { | |
926 | case SVt_NULL: | |
927 | break; | |
928 | case SVt_PVAV: | |
44a8e56a | 929 | av_clear((AV*)sv); |
8990e307 LW |
930 | break; |
931 | case SVt_PVHV: | |
44a8e56a | 932 | hv_clear((HV*)sv); |
8990e307 LW |
933 | break; |
934 | case SVt_PVCV: | |
cea2e8a9 | 935 | Perl_croak(aTHX_ "panic: leave_scope pad code"); |
8990e307 | 936 | default: |
0c34ef67 | 937 | SvOK_off(sv); |
8990e307 LW |
938 | break; |
939 | } | |
d9d18af6 | 940 | SvPADSTALE_on(sv); /* mark as no longer live */ |
8990e307 LW |
941 | } |
942 | else { /* Someone has a claim on this, so abandon it. */ | |
235cc2e3 | 943 | U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP); |
8990e307 LW |
944 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
945 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; | |
946 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; | |
947 | default: *(SV**)ptr = NEWSV(0,0); break; | |
948 | } | |
53868620 | 949 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
d9d18af6 DM |
950 | /* preserve pad nature, but also mark as not live |
951 | * for any closure capturing */ | |
2740392c | 952 | SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE; |
8990e307 LW |
953 | } |
954 | break; | |
955 | case SAVEt_DELETE: | |
956 | ptr = SSPOPPTR; | |
957 | hv = (HV*)ptr; | |
958 | ptr = SSPOPPTR; | |
748a9306 | 959 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
4e4c362e | 960 | SvREFCNT_dec(hv); |
8aacddc1 | 961 | Safefree(ptr); |
8990e307 | 962 | break; |
a0d0e21e LW |
963 | case SAVEt_DESTRUCTOR: |
964 | ptr = SSPOPPTR; | |
146174a9 CB |
965 | (*SSPOPDPTR)(ptr); |
966 | break; | |
967 | case SAVEt_DESTRUCTOR_X: | |
968 | ptr = SSPOPPTR; | |
acfe0abc | 969 | (*SSPOPDXPTR)(aTHX_ ptr); |
a0d0e21e LW |
970 | break; |
971 | case SAVEt_REGCONTEXT: | |
455ece5e | 972 | case SAVEt_ALLOC: |
161b7d16 | 973 | i = SSPOPINT; |
3280af22 | 974 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e | 975 | break; |
55497cff | 976 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 | 977 | i = SSPOPINT; |
3280af22 | 978 | PL_stack_sp = PL_stack_base + i; |
55497cff | 979 | break; |
161b7d16 SM |
980 | case SAVEt_AELEM: /* array element */ |
981 | value = (SV*)SSPOPPTR; | |
982 | i = SSPOPINT; | |
983 | av = (AV*)SSPOPPTR; | |
5dd42e15 DM |
984 | if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */ |
985 | SvREFCNT_dec(value); | |
161b7d16 | 986 | ptr = av_fetch(av,i,1); |
4e4c362e GS |
987 | if (ptr) { |
988 | sv = *(SV**)ptr; | |
3280af22 | 989 | if (sv && sv != &PL_sv_undef) { |
14befaf4 | 990 | if (SvTIED_mg((SV*)av, PERL_MAGIC_tied)) |
4e4c362e | 991 | (void)SvREFCNT_inc(sv); |
4e4c362e GS |
992 | goto restore_sv; |
993 | } | |
994 | } | |
995 | SvREFCNT_dec(av); | |
996 | SvREFCNT_dec(value); | |
997 | break; | |
161b7d16 SM |
998 | case SAVEt_HELEM: /* hash element */ |
999 | value = (SV*)SSPOPPTR; | |
9002cb76 | 1000 | sv = (SV*)SSPOPPTR; |
161b7d16 SM |
1001 | hv = (HV*)SSPOPPTR; |
1002 | ptr = hv_fetch_ent(hv, sv, 1, 0); | |
4e4c362e GS |
1003 | if (ptr) { |
1004 | SV *oval = HeVAL((HE*)ptr); | |
3280af22 | 1005 | if (oval && oval != &PL_sv_undef) { |
4e4c362e | 1006 | ptr = &HeVAL((HE*)ptr); |
14befaf4 | 1007 | if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) |
4e4c362e | 1008 | (void)SvREFCNT_inc(*(SV**)ptr); |
4e4c362e | 1009 | SvREFCNT_dec(sv); |
5dd42e15 | 1010 | av = (AV*)hv; /* what to refcnt_dec */ |
4e4c362e GS |
1011 | goto restore_sv; |
1012 | } | |
1013 | } | |
1014 | SvREFCNT_dec(hv); | |
1015 | SvREFCNT_dec(sv); | |
1016 | SvREFCNT_dec(value); | |
1017 | break; | |
462e5cf6 | 1018 | case SAVEt_OP: |
533c011a | 1019 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 | 1020 | break; |
25eaa213 | 1021 | case SAVEt_HINTS: |
045ac317 RGS |
1022 | if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) { |
1023 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); | |
1024 | GvHV(PL_hintgv) = NULL; | |
1025 | } | |
3280af22 | 1026 | *(I32*)&PL_hints = (I32)SSPOPINT; |
dfa41748 DM |
1027 | if (PL_hints & HINT_LOCALIZE_HH) { |
1028 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); | |
1029 | GvHV(PL_hintgv) = (HV*)SSPOPPTR; | |
1030 | } | |
1031 | ||
b3ac6de7 | 1032 | break; |
cb50131a | 1033 | case SAVEt_COMPPAD: |
f3548bdc | 1034 | PL_comppad = (PAD*)SSPOPPTR; |
58ed4fbe | 1035 | if (PL_comppad) |
cb50131a CB |
1036 | PL_curpad = AvARRAY(PL_comppad); |
1037 | else | |
1038 | PL_curpad = Null(SV**); | |
1039 | break; | |
c3564e5c GS |
1040 | case SAVEt_PADSV: |
1041 | { | |
1042 | PADOFFSET off = (PADOFFSET)SSPOPLONG; | |
1043 | ptr = SSPOPPTR; | |
1044 | if (ptr) | |
f3548bdc | 1045 | AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR; |
c3564e5c GS |
1046 | } |
1047 | break; | |
8b7059b1 DM |
1048 | case SAVEt_SAVESWITCHSTACK: |
1049 | { | |
1050 | dSP; | |
1051 | AV* t = (AV*)SSPOPPTR; | |
1052 | AV* f = (AV*)SSPOPPTR; | |
1053 | SWITCHSTACK(t,f); | |
1054 | PL_curstackinfo->si_stack = f; | |
1055 | } | |
1056 | break; | |
14f338dc DM |
1057 | case SAVEt_SET_SVFLAGS: |
1058 | { | |
1059 | U32 val = (U32)SSPOPINT; | |
1060 | U32 mask = (U32)SSPOPINT; | |
1061 | sv = (SV*)SSPOPPTR; | |
1062 | SvFLAGS(sv) &= ~mask; | |
1063 | SvFLAGS(sv) |= val; | |
1064 | } | |
1065 | break; | |
79072805 | 1066 | default: |
cea2e8a9 | 1067 | Perl_croak(aTHX_ "panic: leave_scope inconsistency"); |
79072805 LW |
1068 | } |
1069 | } | |
1070 | } | |
8990e307 | 1071 | |
8990e307 | 1072 | void |
864dbfa3 | 1073 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
8990e307 | 1074 | { |
35ff7856 | 1075 | #ifdef DEBUGGING |
22c35a8c | 1076 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 | 1077 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 | 1078 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
146174a9 CB |
1079 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n", |
1080 | PTR2UV(cx->blk_oldcop)); | |
760ac839 LW |
1081 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
1082 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); | |
146174a9 CB |
1083 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n", |
1084 | PTR2UV(cx->blk_oldpm)); | |
760ac839 | 1085 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 | 1086 | } |
6b35e009 | 1087 | switch (CxTYPE(cx)) { |
8990e307 LW |
1088 | case CXt_NULL: |
1089 | case CXt_BLOCK: | |
1090 | break; | |
146174a9 CB |
1091 | case CXt_FORMAT: |
1092 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", | |
1093 | PTR2UV(cx->blk_sub.cv)); | |
1094 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n", | |
1095 | PTR2UV(cx->blk_sub.gv)); | |
1096 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n", | |
1097 | PTR2UV(cx->blk_sub.dfoutgv)); | |
1098 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", | |
1099 | (int)cx->blk_sub.hasargs); | |
f39bc417 DM |
1100 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n", |
1101 | PTR2UV(cx->blk_sub.retop)); | |
146174a9 | 1102 | break; |
8990e307 | 1103 | case CXt_SUB: |
146174a9 CB |
1104 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1105 | PTR2UV(cx->blk_sub.cv)); | |
760ac839 | 1106 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 | 1107 | (long)cx->blk_sub.olddepth); |
760ac839 | 1108 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 | 1109 | (int)cx->blk_sub.hasargs); |
146174a9 CB |
1110 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", |
1111 | (int)cx->blk_sub.lval); | |
f39bc417 DM |
1112 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n", |
1113 | PTR2UV(cx->blk_sub.retop)); | |
8990e307 LW |
1114 | break; |
1115 | case CXt_EVAL: | |
760ac839 | 1116 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 | 1117 | (long)cx->blk_eval.old_in_eval); |
760ac839 | 1118 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
22c35a8c GS |
1119 | PL_op_name[cx->blk_eval.old_op_type], |
1120 | PL_op_desc[cx->blk_eval.old_op_type]); | |
0f79a09d GS |
1121 | if (cx->blk_eval.old_namesv) |
1122 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", | |
1123 | SvPVX(cx->blk_eval.old_namesv)); | |
146174a9 CB |
1124 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n", |
1125 | PTR2UV(cx->blk_eval.old_eval_root)); | |
f39bc417 DM |
1126 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n", |
1127 | PTR2UV(cx->blk_eval.retop)); | |
8990e307 LW |
1128 | break; |
1129 | ||
1130 | case CXt_LOOP: | |
760ac839 | 1131 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 | 1132 | cx->blk_loop.label); |
760ac839 | 1133 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 | 1134 | (long)cx->blk_loop.resetsp); |
146174a9 CB |
1135 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n", |
1136 | PTR2UV(cx->blk_loop.redo_op)); | |
1137 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n", | |
1138 | PTR2UV(cx->blk_loop.next_op)); | |
1139 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n", | |
1140 | PTR2UV(cx->blk_loop.last_op)); | |
760ac839 | 1141 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 | 1142 | (long)cx->blk_loop.iterix); |
146174a9 CB |
1143 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n", |
1144 | PTR2UV(cx->blk_loop.iterary)); | |
1145 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n", | |
1146 | PTR2UV(CxITERVAR(cx))); | |
1147 | if (CxITERVAR(cx)) | |
1148 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n", | |
1149 | PTR2UV(cx->blk_loop.itersave)); | |
1150 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n", | |
1151 | PTR2UV(cx->blk_loop.iterlval)); | |
8990e307 LW |
1152 | break; |
1153 | ||
1154 | case CXt_SUBST: | |
760ac839 | 1155 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 | 1156 | (long)cx->sb_iters); |
760ac839 | 1157 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 | 1158 | (long)cx->sb_maxiters); |
35ef4773 GS |
1159 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
1160 | (long)cx->sb_rflags); | |
760ac839 | 1161 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 | 1162 | (long)cx->sb_once); |
760ac839 | 1163 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 | 1164 | cx->sb_orig); |
146174a9 CB |
1165 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n", |
1166 | PTR2UV(cx->sb_dstr)); | |
1167 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n", | |
1168 | PTR2UV(cx->sb_targ)); | |
1169 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n", | |
1170 | PTR2UV(cx->sb_s)); | |
1171 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n", | |
1172 | PTR2UV(cx->sb_m)); | |
1173 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n", | |
1174 | PTR2UV(cx->sb_strend)); | |
1175 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n", | |
1176 | PTR2UV(cx->sb_rxres)); | |
8990e307 LW |
1177 | break; |
1178 | } | |
17c3b450 | 1179 | #endif /* DEBUGGING */ |
35ff7856 | 1180 | } |