Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* scope.c |
79072805 | 2 | * |
e6906430 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
583439ab | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "For the fashion of Minas Tirith was such that it was built on seven | |
13 | * levels..." | |
79072805 LW |
14 | */ |
15 | ||
40d34c0d SB |
16 | /* This file contains functions to manipulate several of Perl's stacks; |
17 | * in particular it contains code to push various types of things onto | |
18 | * the savestack, then to pop them off and perform the correct restorative | |
19 | * action for each one. This corresponds to the cleanup Perl does at | |
20 | * each scope exit. | |
21 | */ | |
22 | ||
79072805 | 23 | #include "EXTERN.h" |
864dbfa3 | 24 | #define PERL_IN_SCOPE_C |
79072805 LW |
25 | #include "perl.h" |
26 | ||
14dd3ad8 | 27 | #if defined(PERL_FLEXIBLE_EXCEPTIONS) |
312caa8e | 28 | void * |
146174a9 CB |
29 | Perl_default_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt, |
30 | protect_body_t body, ...) | |
312caa8e | 31 | { |
c5be433b GS |
32 | void *ret; |
33 | va_list args; | |
34 | va_start(args, body); | |
146174a9 | 35 | ret = vdefault_protect(pcur_env, excpt, body, &args); |
c5be433b GS |
36 | va_end(args); |
37 | return ret; | |
38 | } | |
39 | ||
40 | void * | |
146174a9 CB |
41 | Perl_vdefault_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt, |
42 | protect_body_t body, va_list *args) | |
c5be433b | 43 | { |
312caa8e CS |
44 | int ex; |
45 | void *ret; | |
46 | ||
312caa8e CS |
47 | JMPENV_PUSH(ex); |
48 | if (ex) | |
49 | ret = NULL; | |
c5be433b GS |
50 | else |
51 | ret = CALL_FPTR(body)(aTHX_ *args); | |
a6c40364 | 52 | *excpt = ex; |
312caa8e CS |
53 | JMPENV_POP; |
54 | return ret; | |
55 | } | |
14dd3ad8 | 56 | #endif |
312caa8e | 57 | |
a0d0e21e | 58 | SV** |
864dbfa3 | 59 | Perl_stack_grow(pTHX_ SV **sp, SV **p, int n) |
a0d0e21e | 60 | { |
3280af22 | 61 | PL_stack_sp = sp; |
2ce36478 | 62 | #ifndef STRESS_REALLOC |
3280af22 | 63 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128); |
2ce36478 | 64 | #else |
6b88bc9c | 65 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1); |
2ce36478 | 66 | #endif |
3280af22 | 67 | return PL_stack_sp; |
a0d0e21e LW |
68 | } |
69 | ||
2ce36478 SM |
70 | #ifndef STRESS_REALLOC |
71 | #define GROW(old) ((old) * 3 / 2) | |
72 | #else | |
73 | #define GROW(old) ((old) + 1) | |
74 | #endif | |
75 | ||
e336de0d | 76 | PERL_SI * |
864dbfa3 | 77 | Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems) |
e336de0d GS |
78 | { |
79 | PERL_SI *si; | |
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 | { |
8c18bf38 | 101 | const IV old_max = cxstack_max; |
2ce36478 | 102 | cxstack_max = GROW(cxstack_max); |
c09156bb | 103 | Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */ |
9965345d JH |
104 | /* Without any kind of initialising deep enough recursion |
105 | * will end up reading uninitialised PERL_CONTEXTs. */ | |
106 | Poison(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT); | |
79072805 LW |
107 | return cxstack_ix + 1; |
108 | } | |
109 | ||
110 | void | |
864dbfa3 | 111 | Perl_push_return(pTHX_ OP *retop) |
79072805 | 112 | { |
3280af22 NIS |
113 | if (PL_retstack_ix == PL_retstack_max) { |
114 | PL_retstack_max = GROW(PL_retstack_max); | |
115 | Renew(PL_retstack, PL_retstack_max, OP*); | |
79072805 | 116 | } |
3280af22 | 117 | PL_retstack[PL_retstack_ix++] = retop; |
79072805 LW |
118 | } |
119 | ||
120 | OP * | |
864dbfa3 | 121 | Perl_pop_return(pTHX) |
79072805 | 122 | { |
3280af22 NIS |
123 | if (PL_retstack_ix > 0) |
124 | return PL_retstack[--PL_retstack_ix]; | |
79072805 LW |
125 | else |
126 | return Nullop; | |
127 | } | |
128 | ||
129 | void | |
864dbfa3 | 130 | Perl_push_scope(pTHX) |
79072805 | 131 | { |
3280af22 NIS |
132 | if (PL_scopestack_ix == PL_scopestack_max) { |
133 | PL_scopestack_max = GROW(PL_scopestack_max); | |
134 | Renew(PL_scopestack, PL_scopestack_max, I32); | |
79072805 | 135 | } |
3280af22 | 136 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 LW |
137 | |
138 | } | |
139 | ||
140 | void | |
864dbfa3 | 141 | Perl_pop_scope(pTHX) |
79072805 | 142 | { |
7120cae1 | 143 | const I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 | 144 | LEAVE_SCOPE(oldsave); |
79072805 LW |
145 | } |
146 | ||
147 | void | |
864dbfa3 | 148 | Perl_markstack_grow(pTHX) |
a0d0e21e | 149 | { |
7120cae1 AL |
150 | const I32 oldmax = PL_markstack_max - PL_markstack; |
151 | const I32 newmax = GROW(oldmax); | |
a0d0e21e | 152 | |
3280af22 NIS |
153 | Renew(PL_markstack, newmax, I32); |
154 | PL_markstack_ptr = PL_markstack + oldmax; | |
155 | PL_markstack_max = PL_markstack + newmax; | |
a0d0e21e LW |
156 | } |
157 | ||
158 | void | |
864dbfa3 | 159 | Perl_savestack_grow(pTHX) |
79072805 | 160 | { |
8aacddc1 | 161 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
3280af22 | 162 | Renew(PL_savestack, PL_savestack_max, ANY); |
79072805 LW |
163 | } |
164 | ||
f3479639 JH |
165 | void |
166 | Perl_savestack_grow_cnt(pTHX_ I32 need) | |
167 | { | |
168 | PL_savestack_max = PL_savestack_ix + need; | |
169 | Renew(PL_savestack, PL_savestack_max, ANY); | |
170 | } | |
171 | ||
2ce36478 SM |
172 | #undef GROW |
173 | ||
79072805 | 174 | void |
864dbfa3 | 175 | Perl_tmps_grow(pTHX_ I32 n) |
677b06e3 | 176 | { |
677b06e3 GS |
177 | #ifndef STRESS_REALLOC |
178 | if (n < 128) | |
179 | n = (PL_tmps_max < 512) ? 128 : 512; | |
180 | #endif | |
181 | PL_tmps_max = PL_tmps_ix + n + 1; | |
182 | Renew(PL_tmps_stack, PL_tmps_max, SV*); | |
183 | } | |
184 | ||
185 | ||
186 | void | |
864dbfa3 | 187 | Perl_free_tmps(pTHX) |
79072805 LW |
188 | { |
189 | /* XXX should tmps_floor live in cxstack? */ | |
7120cae1 | 190 | const I32 myfloor = PL_tmps_floor; |
3280af22 NIS |
191 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
192 | SV* sv = PL_tmps_stack[PL_tmps_ix]; | |
193 | PL_tmps_stack[PL_tmps_ix--] = Nullsv; | |
8aacddc1 | 194 | if (sv && sv != &PL_sv_undef) { |
463ee0b2 | 195 | SvTEMP_off(sv); |
8990e307 | 196 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 | 197 | } |
79072805 LW |
198 | } |
199 | } | |
200 | ||
76e3520e | 201 | STATIC SV * |
cea2e8a9 | 202 | S_save_scalar_at(pTHX_ SV **sptr) |
79072805 LW |
203 | { |
204 | register SV *sv; | |
7a4c00b4 | 205 | SV *osv = *sptr; |
79072805 | 206 | |
7a4c00b4 | 207 | sv = *sptr = NEWSV(0,0); |
a0d0e21e | 208 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
79072805 | 209 | sv_upgrade(sv, SvTYPE(osv)); |
a0d0e21e | 210 | if (SvGMAGICAL(osv)) { |
748a9306 | 211 | MAGIC* mg; |
7120cae1 | 212 | const bool oldtainted = PL_tainted; |
5cfc7842 | 213 | mg_get(osv); /* note, can croak! */ |
14befaf4 DM |
214 | if (PL_tainting && PL_tainted && |
215 | (mg = mg_find(osv, PERL_MAGIC_taint))) { | |
748a9306 LW |
216 | SAVESPTR(mg->mg_obj); |
217 | mg->mg_obj = osv; | |
218 | } | |
a0d0e21e | 219 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
8aacddc1 | 220 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
3280af22 | 221 | PL_tainted = oldtainted; |
a0d0e21e | 222 | } |
a8dc4fe8 | 223 | SvMAGIC_set(sv, SvMAGIC(osv)); |
fd7bf071 | 224 | SvFLAGS(sv) |= SvMAGICAL(osv); |
2d5e9e5d JH |
225 | /* XXX SvMAGIC() is *shared* between osv and sv. This can |
226 | * lead to coredumps when both SVs are destroyed without one | |
227 | * of their SvMAGIC() slots being NULLed. */ | |
3280af22 | 228 | PL_localizing = 1; |
79072805 | 229 | SvSETMAGIC(sv); |
3280af22 | 230 | PL_localizing = 0; |
79072805 LW |
231 | } |
232 | return sv; | |
233 | } | |
234 | ||
7a4c00b4 | 235 | SV * |
864dbfa3 | 236 | Perl_save_scalar(pTHX_ GV *gv) |
7a4c00b4 | 237 | { |
4e4c362e | 238 | SV **sptr = &GvSV(gv); |
7a4c00b4 | 239 | SSCHECK(3); |
4e4c362e GS |
240 | SSPUSHPTR(SvREFCNT_inc(gv)); |
241 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
7a4c00b4 | 242 | SSPUSHINT(SAVEt_SV); |
4e4c362e | 243 | return save_scalar_at(sptr); |
7a4c00b4 | 244 | } |
245 | ||
246 | SV* | |
864dbfa3 | 247 | Perl_save_svref(pTHX_ SV **sptr) |
7a4c00b4 | 248 | { |
249 | SSCHECK(3); | |
250 | SSPUSHPTR(sptr); | |
4e4c362e | 251 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 | 252 | SSPUSHINT(SAVEt_SVREF); |
253 | return save_scalar_at(sptr); | |
254 | } | |
255 | ||
f4dd75d9 | 256 | /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to |
b9d12d37 GS |
257 | * restore a global SV to its prior contents, freeing new value. */ |
258 | void | |
864dbfa3 | 259 | Perl_save_generic_svref(pTHX_ SV **sptr) |
b9d12d37 | 260 | { |
b9d12d37 GS |
261 | SSCHECK(3); |
262 | SSPUSHPTR(sptr); | |
263 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
264 | SSPUSHINT(SAVEt_GENERIC_SVREF); | |
265 | } | |
266 | ||
f4dd75d9 GS |
267 | /* Like save_pptr(), but also Safefree()s the new value if it is different |
268 | * from the old one. Can be used to restore a global char* to its prior | |
269 | * contents, freeing new value. */ | |
270 | void | |
271 | Perl_save_generic_pvref(pTHX_ char **str) | |
272 | { | |
f4dd75d9 GS |
273 | SSCHECK(3); |
274 | SSPUSHPTR(str); | |
275 | SSPUSHPTR(*str); | |
276 | SSPUSHINT(SAVEt_GENERIC_PVREF); | |
277 | } | |
278 | ||
05ec9bb3 NIS |
279 | /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree(). |
280 | * Can be used to restore a shared global char* to its prior | |
281 | * contents, freeing new value. */ | |
282 | void | |
283 | Perl_save_shared_pvref(pTHX_ char **str) | |
284 | { | |
285 | SSCHECK(3); | |
286 | SSPUSHPTR(str); | |
287 | SSPUSHPTR(*str); | |
288 | SSPUSHINT(SAVEt_SHARED_PVREF); | |
289 | } | |
290 | ||
79072805 | 291 | void |
864dbfa3 | 292 | Perl_save_gp(pTHX_ GV *gv, I32 empty) |
79072805 | 293 | { |
f3479639 | 294 | SSGROW(6); |
fb73857a | 295 | SSPUSHIV((IV)SvLEN(gv)); |
a8dc4fe8 | 296 | SvLEN_set(gv, 0); /* forget that anything was allocated here */ |
fb73857a | 297 | SSPUSHIV((IV)SvCUR(gv)); |
fdac8c4b | 298 | SSPUSHPTR(SvPVX_const(gv)); |
fb73857a | 299 | SvPOK_off(gv); |
4633a7c4 | 300 | SSPUSHPTR(SvREFCNT_inc(gv)); |
5f05dabc | 301 | SSPUSHPTR(GvGP(gv)); |
79072805 LW |
302 | SSPUSHINT(SAVEt_GP); |
303 | ||
5f05dabc | 304 | if (empty) { |
305 | register GP *gp; | |
fae75791 | 306 | |
146174a9 CB |
307 | Newz(602, gp, 1, GP); |
308 | ||
fae75791 | 309 | if (GvCVu(gv)) |
3280af22 | 310 | PL_sub_generation++; /* taking a method out of circulation */ |
146174a9 CB |
311 | if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) { |
312 | gp->gp_io = newIO(); | |
313 | IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START; | |
314 | } | |
44a8e56a | 315 | GvGP(gv) = gp_ref(gp); |
5f05dabc | 316 | GvSV(gv) = NEWSV(72,0); |
146174a9 | 317 | GvLINE(gv) = CopLINE(PL_curcop); |
206b424e NC |
318 | /* XXX Ideally this cast would be replaced with a change to const char* |
319 | in the struct. */ | |
320 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : (char *) ""; | |
5f05dabc | 321 | GvEGV(gv) = gv; |
322 | } | |
323 | else { | |
44a8e56a | 324 | gp_ref(GvGP(gv)); |
5f05dabc | 325 | GvINTRO_on(gv); |
326 | } | |
79072805 | 327 | } |
79072805 | 328 | |
79072805 | 329 | AV * |
864dbfa3 | 330 | Perl_save_ary(pTHX_ GV *gv) |
79072805 | 331 | { |
67a38de0 NIS |
332 | AV *oav = GvAVn(gv); |
333 | AV *av; | |
fb73857a | 334 | |
67a38de0 NIS |
335 | if (!AvREAL(oav) && AvREIFY(oav)) |
336 | av_reify(oav); | |
79072805 LW |
337 | SSCHECK(3); |
338 | SSPUSHPTR(gv); | |
67a38de0 | 339 | SSPUSHPTR(oav); |
79072805 LW |
340 | SSPUSHINT(SAVEt_AV); |
341 | ||
342 | GvAV(gv) = Null(AV*); | |
fb73857a | 343 | av = GvAVn(gv); |
344 | if (SvMAGIC(oav)) { | |
a8dc4fe8 | 345 | SvMAGIC_set(av, SvMAGIC(oav)); |
32da55ab | 346 | SvFLAGS((SV*)av) |= SvMAGICAL(oav); |
fb73857a | 347 | SvMAGICAL_off(oav); |
a8dc4fe8 | 348 | SvMAGIC_set(oav, NULL); |
3280af22 | 349 | PL_localizing = 1; |
fb73857a | 350 | SvSETMAGIC((SV*)av); |
3280af22 | 351 | PL_localizing = 0; |
fb73857a | 352 | } |
353 | return av; | |
79072805 LW |
354 | } |
355 | ||
356 | HV * | |
864dbfa3 | 357 | Perl_save_hash(pTHX_ GV *gv) |
79072805 | 358 | { |
fb73857a | 359 | HV *ohv, *hv; |
360 | ||
79072805 LW |
361 | SSCHECK(3); |
362 | SSPUSHPTR(gv); | |
fb73857a | 363 | SSPUSHPTR(ohv = GvHVn(gv)); |
79072805 LW |
364 | SSPUSHINT(SAVEt_HV); |
365 | ||
366 | GvHV(gv) = Null(HV*); | |
fb73857a | 367 | hv = GvHVn(gv); |
368 | if (SvMAGIC(ohv)) { | |
a8dc4fe8 | 369 | SvMAGIC_set(hv, SvMAGIC(ohv)); |
32da55ab | 370 | SvFLAGS((SV*)hv) |= SvMAGICAL(ohv); |
fb73857a | 371 | SvMAGICAL_off(ohv); |
a8dc4fe8 | 372 | SvMAGIC_set(ohv, NULL); |
3280af22 | 373 | PL_localizing = 1; |
fb73857a | 374 | SvSETMAGIC((SV*)hv); |
3280af22 | 375 | PL_localizing = 0; |
fb73857a | 376 | } |
377 | return hv; | |
79072805 LW |
378 | } |
379 | ||
380 | void | |
864dbfa3 | 381 | Perl_save_item(pTHX_ register SV *item) |
79072805 | 382 | { |
04851bb3 | 383 | register SV *sv = newSVsv(item); |
79072805 LW |
384 | |
385 | SSCHECK(3); | |
386 | SSPUSHPTR(item); /* remember the pointer */ | |
79072805 LW |
387 | SSPUSHPTR(sv); /* remember the value */ |
388 | SSPUSHINT(SAVEt_ITEM); | |
389 | } | |
390 | ||
391 | void | |
864dbfa3 | 392 | Perl_save_int(pTHX_ int *intp) |
79072805 LW |
393 | { |
394 | SSCHECK(3); | |
395 | SSPUSHINT(*intp); | |
396 | SSPUSHPTR(intp); | |
397 | SSPUSHINT(SAVEt_INT); | |
398 | } | |
399 | ||
400 | void | |
864dbfa3 | 401 | Perl_save_long(pTHX_ long int *longp) |
85e6fe83 LW |
402 | { |
403 | SSCHECK(3); | |
404 | SSPUSHLONG(*longp); | |
405 | SSPUSHPTR(longp); | |
406 | SSPUSHINT(SAVEt_LONG); | |
407 | } | |
408 | ||
409 | void | |
4f4e7967 JH |
410 | Perl_save_bool(pTHX_ bool *boolp) |
411 | { | |
412 | SSCHECK(3); | |
413 | SSPUSHBOOL(*boolp); | |
414 | SSPUSHPTR(boolp); | |
415 | SSPUSHINT(SAVEt_BOOL); | |
416 | } | |
417 | ||
418 | void | |
864dbfa3 | 419 | Perl_save_I32(pTHX_ I32 *intp) |
79072805 LW |
420 | { |
421 | SSCHECK(3); | |
422 | SSPUSHINT(*intp); | |
423 | SSPUSHPTR(intp); | |
424 | SSPUSHINT(SAVEt_I32); | |
425 | } | |
426 | ||
a0d0e21e | 427 | void |
864dbfa3 | 428 | Perl_save_I16(pTHX_ I16 *intp) |
55497cff | 429 | { |
430 | SSCHECK(3); | |
431 | SSPUSHINT(*intp); | |
432 | SSPUSHPTR(intp); | |
433 | SSPUSHINT(SAVEt_I16); | |
434 | } | |
435 | ||
436 | void | |
146174a9 CB |
437 | Perl_save_I8(pTHX_ I8 *bytep) |
438 | { | |
146174a9 CB |
439 | SSCHECK(3); |
440 | SSPUSHINT(*bytep); | |
441 | SSPUSHPTR(bytep); | |
442 | SSPUSHINT(SAVEt_I8); | |
443 | } | |
444 | ||
445 | void | |
864dbfa3 | 446 | Perl_save_iv(pTHX_ IV *ivp) |
a0d0e21e LW |
447 | { |
448 | SSCHECK(3); | |
4aa0a1f7 | 449 | SSPUSHIV(*ivp); |
a0d0e21e LW |
450 | SSPUSHPTR(ivp); |
451 | SSPUSHINT(SAVEt_IV); | |
452 | } | |
453 | ||
85e6fe83 LW |
454 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
455 | * force word-alignment and we'll miss the pointer. | |
456 | */ | |
457 | void | |
864dbfa3 | 458 | Perl_save_pptr(pTHX_ char **pptr) |
85e6fe83 LW |
459 | { |
460 | SSCHECK(3); | |
461 | SSPUSHPTR(*pptr); | |
462 | SSPUSHPTR(pptr); | |
463 | SSPUSHINT(SAVEt_PPTR); | |
464 | } | |
465 | ||
79072805 | 466 | void |
146174a9 CB |
467 | Perl_save_vptr(pTHX_ void *ptr) |
468 | { | |
146174a9 CB |
469 | SSCHECK(3); |
470 | SSPUSHPTR(*(char**)ptr); | |
471 | SSPUSHPTR(ptr); | |
472 | SSPUSHINT(SAVEt_VPTR); | |
473 | } | |
474 | ||
475 | void | |
864dbfa3 | 476 | Perl_save_sptr(pTHX_ SV **sptr) |
79072805 LW |
477 | { |
478 | SSCHECK(3); | |
479 | SSPUSHPTR(*sptr); | |
480 | SSPUSHPTR(sptr); | |
481 | SSPUSHINT(SAVEt_SPTR); | |
482 | } | |
483 | ||
c3564e5c GS |
484 | void |
485 | Perl_save_padsv(pTHX_ PADOFFSET off) | |
486 | { | |
c3564e5c | 487 | SSCHECK(4); |
d7afa7f5 | 488 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
c3564e5c | 489 | SSPUSHPTR(PL_curpad[off]); |
d7afa7f5 | 490 | SSPUSHPTR(PL_comppad); |
c3564e5c GS |
491 | SSPUSHLONG((long)off); |
492 | SSPUSHINT(SAVEt_PADSV); | |
493 | } | |
494 | ||
54b9620d | 495 | SV ** |
864dbfa3 | 496 | Perl_save_threadsv(pTHX_ PADOFFSET i) |
54b9620d | 497 | { |
4d1ff10f | 498 | #ifdef USE_5005THREADS |
940cb80d | 499 | SV **svp = &THREADSV(i); /* XXX Change to save by offset */ |
146174a9 CB |
500 | DEBUG_S(PerlIO_printf(Perl_debug_log, "save_threadsv %"UVuf": %p %p:%s\n", |
501 | (UV)i, svp, *svp, SvPEEK(*svp))); | |
54b9620d MB |
502 | save_svref(svp); |
503 | return svp; | |
504 | #else | |
cea2e8a9 | 505 | Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl"); |
e2b56717 | 506 | (void)i; |
24c2fff4 | 507 | NORETURN_FUNCTION_END; |
4d1ff10f | 508 | #endif /* USE_5005THREADS */ |
54b9620d MB |
509 | } |
510 | ||
79072805 | 511 | void |
864dbfa3 | 512 | Perl_save_nogv(pTHX_ GV *gv) |
79072805 LW |
513 | { |
514 | SSCHECK(2); | |
515 | SSPUSHPTR(gv); | |
516 | SSPUSHINT(SAVEt_NSTAB); | |
517 | } | |
518 | ||
519 | void | |
864dbfa3 | 520 | Perl_save_hptr(pTHX_ HV **hptr) |
79072805 LW |
521 | { |
522 | SSCHECK(3); | |
85e6fe83 | 523 | SSPUSHPTR(*hptr); |
79072805 LW |
524 | SSPUSHPTR(hptr); |
525 | SSPUSHINT(SAVEt_HPTR); | |
526 | } | |
527 | ||
528 | void | |
864dbfa3 | 529 | Perl_save_aptr(pTHX_ AV **aptr) |
79072805 LW |
530 | { |
531 | SSCHECK(3); | |
85e6fe83 | 532 | SSPUSHPTR(*aptr); |
79072805 LW |
533 | SSPUSHPTR(aptr); |
534 | SSPUSHINT(SAVEt_APTR); | |
535 | } | |
536 | ||
537 | void | |
864dbfa3 | 538 | Perl_save_freesv(pTHX_ SV *sv) |
8990e307 LW |
539 | { |
540 | SSCHECK(2); | |
541 | SSPUSHPTR(sv); | |
542 | SSPUSHINT(SAVEt_FREESV); | |
543 | } | |
544 | ||
545 | void | |
26d9b02f JH |
546 | Perl_save_mortalizesv(pTHX_ SV *sv) |
547 | { | |
548 | SSCHECK(2); | |
549 | SSPUSHPTR(sv); | |
550 | SSPUSHINT(SAVEt_MORTALIZESV); | |
551 | } | |
552 | ||
553 | void | |
864dbfa3 | 554 | Perl_save_freeop(pTHX_ OP *o) |
8990e307 LW |
555 | { |
556 | SSCHECK(2); | |
11343788 | 557 | SSPUSHPTR(o); |
8990e307 LW |
558 | SSPUSHINT(SAVEt_FREEOP); |
559 | } | |
560 | ||
561 | void | |
864dbfa3 | 562 | Perl_save_freepv(pTHX_ char *pv) |
8990e307 LW |
563 | { |
564 | SSCHECK(2); | |
565 | SSPUSHPTR(pv); | |
566 | SSPUSHINT(SAVEt_FREEPV); | |
567 | } | |
568 | ||
569 | void | |
864dbfa3 | 570 | Perl_save_clearsv(pTHX_ SV **svp) |
8990e307 | 571 | { |
d7afa7f5 | 572 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
8990e307 | 573 | SSCHECK(2); |
3280af22 | 574 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 LW |
575 | SSPUSHINT(SAVEt_CLEARSV); |
576 | } | |
577 | ||
578 | void | |
864dbfa3 | 579 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
8990e307 LW |
580 | { |
581 | SSCHECK(4); | |
582 | SSPUSHINT(klen); | |
583 | SSPUSHPTR(key); | |
4e4c362e | 584 | SSPUSHPTR(SvREFCNT_inc(hv)); |
8990e307 LW |
585 | SSPUSHINT(SAVEt_DELETE); |
586 | } | |
587 | ||
588 | void | |
864dbfa3 | 589 | Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg) |
79072805 LW |
590 | { |
591 | register SV *sv; | |
592 | register I32 i; | |
593 | ||
79072805 | 594 | for (i = 1; i <= maxsarg; i++) { |
79072805 LW |
595 | sv = NEWSV(0,0); |
596 | sv_setsv(sv,sarg[i]); | |
f46d017c GS |
597 | SSCHECK(3); |
598 | SSPUSHPTR(sarg[i]); /* remember the pointer */ | |
79072805 LW |
599 | SSPUSHPTR(sv); /* remember the value */ |
600 | SSPUSHINT(SAVEt_ITEM); | |
601 | } | |
602 | } | |
603 | ||
604 | void | |
146174a9 | 605 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
a0d0e21e LW |
606 | { |
607 | SSCHECK(3); | |
608 | SSPUSHDPTR(f); | |
609 | SSPUSHPTR(p); | |
610 | SSPUSHINT(SAVEt_DESTRUCTOR); | |
611 | } | |
612 | ||
613 | void | |
146174a9 CB |
614 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
615 | { | |
146174a9 CB |
616 | SSCHECK(3); |
617 | SSPUSHDXPTR(f); | |
618 | SSPUSHPTR(p); | |
619 | SSPUSHINT(SAVEt_DESTRUCTOR_X); | |
620 | } | |
621 | ||
622 | void | |
864dbfa3 | 623 | Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr) |
4e4c362e | 624 | { |
bfc4de9f | 625 | SV *sv; |
4e4c362e GS |
626 | SSCHECK(4); |
627 | SSPUSHPTR(SvREFCNT_inc(av)); | |
628 | SSPUSHINT(idx); | |
629 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
630 | SSPUSHINT(SAVEt_AELEM); | |
13057ebc DM |
631 | /* if it gets reified later, the restore will have the wrong refcnt */ |
632 | if (!AvREAL(av) && AvREIFY(av)) | |
1f49be52 | 633 | (void)SvREFCNT_inc(*sptr); |
4e4c362e | 634 | save_scalar_at(sptr); |
bfc4de9f DM |
635 | sv = *sptr; |
636 | /* If we're localizing a tied array element, this new sv | |
637 | * won't actually be stored in the array - so it won't get | |
638 | * reaped when the localize ends. Ensure it gets reaped by | |
639 | * mortifying it instead. DAPM */ | |
640 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
641 | sv_2mortal(sv); | |
4e4c362e GS |
642 | } |
643 | ||
644 | void | |
864dbfa3 | 645 | Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr) |
4e4c362e | 646 | { |
bfc4de9f | 647 | SV *sv; |
4e4c362e GS |
648 | SSCHECK(4); |
649 | SSPUSHPTR(SvREFCNT_inc(hv)); | |
650 | SSPUSHPTR(SvREFCNT_inc(key)); | |
651 | SSPUSHPTR(SvREFCNT_inc(*sptr)); | |
652 | SSPUSHINT(SAVEt_HELEM); | |
653 | save_scalar_at(sptr); | |
bfc4de9f DM |
654 | sv = *sptr; |
655 | /* If we're localizing a tied hash element, this new sv | |
656 | * won't actually be stored in the hash - so it won't get | |
657 | * reaped when the localize ends. Ensure it gets reaped by | |
658 | * mortifying it instead. DAPM */ | |
659 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
660 | sv_2mortal(sv); | |
4e4c362e GS |
661 | } |
662 | ||
663 | void | |
864dbfa3 | 664 | Perl_save_op(pTHX) |
462e5cf6 | 665 | { |
462e5cf6 | 666 | SSCHECK(2); |
533c011a | 667 | SSPUSHPTR(PL_op); |
462e5cf6 MB |
668 | SSPUSHINT(SAVEt_OP); |
669 | } | |
670 | ||
455ece5e | 671 | I32 |
864dbfa3 | 672 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
455ece5e | 673 | { |
7120cae1 | 674 | register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
8aacddc1 | 675 | - (char*)PL_savestack); |
7120cae1 | 676 | register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
455ece5e AD |
677 | |
678 | /* SSCHECK may not be good enough */ | |
679 | while (PL_savestack_ix + elems + 2 > PL_savestack_max) | |
8aacddc1 | 680 | savestack_grow(); |
455ece5e AD |
681 | |
682 | PL_savestack_ix += elems; | |
683 | SSPUSHINT(elems); | |
684 | SSPUSHINT(SAVEt_ALLOC); | |
685 | return start; | |
686 | } | |
687 | ||
462e5cf6 | 688 | void |
864dbfa3 | 689 | Perl_leave_scope(pTHX_ I32 base) |
79072805 LW |
690 | { |
691 | register SV *sv; | |
692 | register SV *value; | |
693 | register GV *gv; | |
694 | register AV *av; | |
695 | register HV *hv; | |
696 | register void* ptr; | |
f4dd75d9 | 697 | register char* str; |
161b7d16 | 698 | I32 i; |
79072805 LW |
699 | |
700 | if (base < -1) | |
cea2e8a9 | 701 | Perl_croak(aTHX_ "panic: corrupt saved stack index"); |
3280af22 | 702 | while (PL_savestack_ix > base) { |
79072805 LW |
703 | switch (SSPOPINT) { |
704 | case SAVEt_ITEM: /* normal string */ | |
705 | value = (SV*)SSPOPPTR; | |
706 | sv = (SV*)SSPOPPTR; | |
707 | sv_replace(sv,value); | |
3280af22 | 708 | PL_localizing = 2; |
79072805 | 709 | SvSETMAGIC(sv); |
3280af22 | 710 | PL_localizing = 0; |
79072805 | 711 | break; |
8aacddc1 | 712 | case SAVEt_SV: /* scalar reference */ |
79072805 LW |
713 | value = (SV*)SSPOPPTR; |
714 | gv = (GV*)SSPOPPTR; | |
7a4c00b4 | 715 | ptr = &GvSV(gv); |
13057ebc | 716 | av = (AV*)gv; /* what to refcnt_dec */ |
7a4c00b4 | 717 | goto restore_sv; |
8aacddc1 | 718 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
f4dd75d9 GS |
719 | str = (char*)SSPOPPTR; |
720 | ptr = SSPOPPTR; | |
721 | if (*(char**)ptr != str) { | |
722 | Safefree(*(char**)ptr); | |
723 | *(char**)ptr = str; | |
724 | } | |
725 | break; | |
05ec9bb3 NIS |
726 | case SAVEt_SHARED_PVREF: /* shared pv */ |
727 | str = (char*)SSPOPPTR; | |
728 | ptr = SSPOPPTR; | |
729 | if (*(char**)ptr != str) { | |
5e54c26f | 730 | #ifdef NETWARE |
9ecbcc42 | 731 | PerlMem_free(*(char**)ptr); |
5e54c26f | 732 | #else |
05ec9bb3 | 733 | PerlMemShared_free(*(char**)ptr); |
5e54c26f | 734 | #endif |
05ec9bb3 NIS |
735 | *(char**)ptr = str; |
736 | } | |
737 | break; | |
8aacddc1 | 738 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
b9d12d37 GS |
739 | value = (SV*)SSPOPPTR; |
740 | ptr = SSPOPPTR; | |
f4dd75d9 GS |
741 | sv = *(SV**)ptr; |
742 | *(SV**)ptr = value; | |
743 | SvREFCNT_dec(sv); | |
b9d12d37 GS |
744 | SvREFCNT_dec(value); |
745 | break; | |
8aacddc1 | 746 | case SAVEt_SVREF: /* scalar reference */ |
7a4c00b4 | 747 | value = (SV*)SSPOPPTR; |
79072805 | 748 | ptr = SSPOPPTR; |
13057ebc | 749 | av = Nullav; /* what to refcnt_dec */ |
7a4c00b4 | 750 | restore_sv: |
79072805 | 751 | sv = *(SV**)ptr; |
146174a9 | 752 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
54b9620d | 753 | "restore svref: %p %p:%s -> %p:%s\n", |
8aacddc1 | 754 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
cdec4f49 JH |
755 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
756 | SvTYPE(sv) != SVt_PVGV) | |
757 | { | |
a0d0e21e | 758 | (void)SvUPGRADE(value, SvTYPE(sv)); |
a8dc4fe8 | 759 | SvMAGIC_set(value, SvMAGIC(sv)); |
a0d0e21e LW |
760 | SvFLAGS(value) |= SvMAGICAL(sv); |
761 | SvMAGICAL_off(sv); | |
a8dc4fe8 | 762 | SvMAGIC_set(sv, 0); |
a0d0e21e | 763 | } |
2d5e9e5d JH |
764 | /* XXX This branch is pretty bogus. This code irretrievably |
765 | * clears(!) the magic on the SV (either to avoid further | |
766 | * croaking that might ensue when the SvSETMAGIC() below is | |
767 | * called, or to avoid two different SVs pointing at the same | |
768 | * SvMAGIC()). This needs a total rethink. --GSAR */ | |
cdec4f49 JH |
769 | else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) && |
770 | SvTYPE(value) != SVt_PVGV) | |
771 | { | |
7a4c00b4 | 772 | SvFLAGS(value) |= (SvFLAGS(value) & |
8aacddc1 | 773 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
7a4c00b4 | 774 | SvMAGICAL_off(value); |
2d5e9e5d JH |
775 | /* XXX this is a leak when we get here because the |
776 | * mg_get() in save_scalar_at() croaked */ | |
a8dc4fe8 | 777 | SvMAGIC_set(value, NULL); |
7a4c00b4 | 778 | } |
a0d0e21e | 779 | *(SV**)ptr = value; |
65b7047c | 780 | SvREFCNT_dec(sv); |
3280af22 | 781 | PL_localizing = 2; |
a0d0e21e | 782 | SvSETMAGIC(value); |
3280af22 | 783 | PL_localizing = 0; |
4e4c362e | 784 | SvREFCNT_dec(value); |
13057ebc DM |
785 | if (av) /* actually an av, hv or gv */ |
786 | SvREFCNT_dec(av); | |
8aacddc1 NIS |
787 | break; |
788 | case SAVEt_AV: /* array reference */ | |
79072805 LW |
789 | av = (AV*)SSPOPPTR; |
790 | gv = (GV*)SSPOPPTR; | |
fb73857a | 791 | if (GvAV(gv)) { |
7120cae1 | 792 | AV * const goner = GvAV(gv); |
a8dc4fe8 | 793 | SvMAGIC_set(av, SvMAGIC(goner)); |
32da55ab | 794 | SvFLAGS((SV*)av) |= SvMAGICAL(goner); |
fb73857a | 795 | SvMAGICAL_off(goner); |
a8dc4fe8 | 796 | SvMAGIC_set(goner, NULL); |
fb73857a | 797 | SvREFCNT_dec(goner); |
798 | } | |
8aacddc1 | 799 | GvAV(gv) = av; |
fb73857a | 800 | if (SvMAGICAL(av)) { |
3280af22 | 801 | PL_localizing = 2; |
fb73857a | 802 | SvSETMAGIC((SV*)av); |
3280af22 | 803 | PL_localizing = 0; |
fb73857a | 804 | } |
8aacddc1 NIS |
805 | break; |
806 | case SAVEt_HV: /* hash reference */ | |
79072805 LW |
807 | hv = (HV*)SSPOPPTR; |
808 | gv = (GV*)SSPOPPTR; | |
fb73857a | 809 | if (GvHV(gv)) { |
7120cae1 | 810 | HV * const goner = GvHV(gv); |
a8dc4fe8 | 811 | SvMAGIC_set(hv, SvMAGIC(goner)); |
fb73857a | 812 | SvFLAGS(hv) |= SvMAGICAL(goner); |
813 | SvMAGICAL_off(goner); | |
a8dc4fe8 | 814 | SvMAGIC_set(goner, NULL); |
fb73857a | 815 | SvREFCNT_dec(goner); |
816 | } | |
8aacddc1 | 817 | GvHV(gv) = hv; |
fb73857a | 818 | if (SvMAGICAL(hv)) { |
3280af22 | 819 | PL_localizing = 2; |
fb73857a | 820 | SvSETMAGIC((SV*)hv); |
3280af22 | 821 | PL_localizing = 0; |
fb73857a | 822 | } |
8aacddc1 | 823 | break; |
79072805 LW |
824 | case SAVEt_INT: /* int reference */ |
825 | ptr = SSPOPPTR; | |
826 | *(int*)ptr = (int)SSPOPINT; | |
827 | break; | |
85e6fe83 LW |
828 | case SAVEt_LONG: /* long reference */ |
829 | ptr = SSPOPPTR; | |
830 | *(long*)ptr = (long)SSPOPLONG; | |
831 | break; | |
4f4e7967 JH |
832 | case SAVEt_BOOL: /* bool reference */ |
833 | ptr = SSPOPPTR; | |
834 | *(bool*)ptr = (bool)SSPOPBOOL; | |
835 | break; | |
79072805 LW |
836 | case SAVEt_I32: /* I32 reference */ |
837 | ptr = SSPOPPTR; | |
838 | *(I32*)ptr = (I32)SSPOPINT; | |
839 | break; | |
55497cff | 840 | case SAVEt_I16: /* I16 reference */ |
841 | ptr = SSPOPPTR; | |
842 | *(I16*)ptr = (I16)SSPOPINT; | |
843 | break; | |
146174a9 CB |
844 | case SAVEt_I8: /* I8 reference */ |
845 | ptr = SSPOPPTR; | |
846 | *(I8*)ptr = (I8)SSPOPINT; | |
847 | break; | |
a0d0e21e LW |
848 | case SAVEt_IV: /* IV reference */ |
849 | ptr = SSPOPPTR; | |
850 | *(IV*)ptr = (IV)SSPOPIV; | |
851 | break; | |
79072805 LW |
852 | case SAVEt_SPTR: /* SV* reference */ |
853 | ptr = SSPOPPTR; | |
854 | *(SV**)ptr = (SV*)SSPOPPTR; | |
855 | break; | |
146174a9 | 856 | case SAVEt_VPTR: /* random* reference */ |
85e6fe83 LW |
857 | case SAVEt_PPTR: /* char* reference */ |
858 | ptr = SSPOPPTR; | |
859 | *(char**)ptr = (char*)SSPOPPTR; | |
860 | break; | |
79072805 LW |
861 | case SAVEt_HPTR: /* HV* reference */ |
862 | ptr = SSPOPPTR; | |
863 | *(HV**)ptr = (HV*)SSPOPPTR; | |
864 | break; | |
865 | case SAVEt_APTR: /* AV* reference */ | |
866 | ptr = SSPOPPTR; | |
867 | *(AV**)ptr = (AV*)SSPOPPTR; | |
868 | break; | |
869 | case SAVEt_NSTAB: | |
870 | gv = (GV*)SSPOPPTR; | |
1f96a9ed | 871 | (void)sv_clear((SV*)gv); |
79072805 | 872 | break; |
fb73857a | 873 | case SAVEt_GP: /* scalar reference */ |
79072805 LW |
874 | ptr = SSPOPPTR; |
875 | gv = (GV*)SSPOPPTR; | |
fdac8c4b SP |
876 | if (SvPVX_const(gv) && SvLEN(gv) > 0) { |
877 | Safefree(SvPVX_const(gv)); | |
8aacddc1 | 878 | } |
0da6cfda | 879 | SvPV_set(gv, (char *)SSPOPPTR); |
a8dc4fe8 SP |
880 | SvCUR_set(gv, (STRLEN)SSPOPIV); |
881 | SvLEN_set(gv, (STRLEN)SSPOPIV); | |
8aacddc1 NIS |
882 | gp_free(gv); |
883 | GvGP(gv) = (GP*)ptr; | |
fae75791 | 884 | if (GvCVu(gv)) |
3280af22 | 885 | PL_sub_generation++; /* putting a method back into circulation */ |
4633a7c4 | 886 | SvREFCNT_dec(gv); |
8aacddc1 | 887 | break; |
8990e307 LW |
888 | case SAVEt_FREESV: |
889 | ptr = SSPOPPTR; | |
890 | SvREFCNT_dec((SV*)ptr); | |
891 | break; | |
26d9b02f JH |
892 | case SAVEt_MORTALIZESV: |
893 | ptr = SSPOPPTR; | |
894 | sv_2mortal((SV*)ptr); | |
895 | break; | |
8990e307 LW |
896 | case SAVEt_FREEOP: |
897 | ptr = SSPOPPTR; | |
d7afa7f5 | 898 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */ |
8990e307 LW |
899 | op_free((OP*)ptr); |
900 | break; | |
901 | case SAVEt_FREEPV: | |
902 | ptr = SSPOPPTR; | |
228fe6e6 | 903 | Safefree(ptr); |
8990e307 LW |
904 | break; |
905 | case SAVEt_CLEARSV: | |
3280af22 | 906 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 | 907 | sv = *(SV**)ptr; |
9755d405 JH |
908 | |
909 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, | |
d7afa7f5 JH |
910 | "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n", |
911 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), | |
912 | (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), | |
9755d405 JH |
913 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" |
914 | )); | |
915 | ||
bc44cdaf GS |
916 | /* Can clear pad variable in place? */ |
917 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { | |
8aacddc1 NIS |
918 | /* |
919 | * if a my variable that was made readonly is going out of | |
920 | * scope, we want to remove the readonlyness so that it can | |
921 | * go out of scope quietly | |
8aacddc1 | 922 | */ |
a26e96df | 923 | if (SvPADMY(sv) && !SvFAKE(sv)) |
8aacddc1 NIS |
924 | SvREADONLY_off(sv); |
925 | ||
6fc92669 | 926 | if (SvTHINKFIRST(sv)) |
840a7b70 | 927 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF); |
a0d0e21e LW |
928 | if (SvMAGICAL(sv)) |
929 | mg_free(sv); | |
8990e307 LW |
930 | |
931 | switch (SvTYPE(sv)) { | |
932 | case SVt_NULL: | |
933 | break; | |
934 | case SVt_PVAV: | |
44a8e56a | 935 | av_clear((AV*)sv); |
8990e307 LW |
936 | break; |
937 | case SVt_PVHV: | |
44a8e56a | 938 | hv_clear((HV*)sv); |
8990e307 LW |
939 | break; |
940 | case SVt_PVCV: | |
cea2e8a9 | 941 | Perl_croak(aTHX_ "panic: leave_scope pad code"); |
8990e307 | 942 | default: |
7460c263 | 943 | SvOK_off(sv); |
8990e307 LW |
944 | break; |
945 | } | |
946 | } | |
947 | else { /* Someone has a claim on this, so abandon it. */ | |
7120cae1 AL |
948 | const U32 padflags |
949 | = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP); | |
8990e307 LW |
950 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
951 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; | |
952 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; | |
953 | default: *(SV**)ptr = NEWSV(0,0); break; | |
954 | } | |
53868620 | 955 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
4aa0a1f7 | 956 | SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */ |
8990e307 LW |
957 | } |
958 | break; | |
959 | case SAVEt_DELETE: | |
960 | ptr = SSPOPPTR; | |
961 | hv = (HV*)ptr; | |
962 | ptr = SSPOPPTR; | |
748a9306 | 963 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
4e4c362e | 964 | SvREFCNT_dec(hv); |
8aacddc1 | 965 | Safefree(ptr); |
8990e307 | 966 | break; |
a0d0e21e LW |
967 | case SAVEt_DESTRUCTOR: |
968 | ptr = SSPOPPTR; | |
146174a9 CB |
969 | (*SSPOPDPTR)(ptr); |
970 | break; | |
971 | case SAVEt_DESTRUCTOR_X: | |
972 | ptr = SSPOPPTR; | |
acfe0abc | 973 | (*SSPOPDXPTR)(aTHX_ ptr); |
a0d0e21e LW |
974 | break; |
975 | case SAVEt_REGCONTEXT: | |
455ece5e | 976 | case SAVEt_ALLOC: |
161b7d16 | 977 | i = SSPOPINT; |
3280af22 | 978 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e | 979 | break; |
55497cff | 980 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 | 981 | i = SSPOPINT; |
3280af22 | 982 | PL_stack_sp = PL_stack_base + i; |
55497cff | 983 | break; |
161b7d16 SM |
984 | case SAVEt_AELEM: /* array element */ |
985 | value = (SV*)SSPOPPTR; | |
986 | i = SSPOPINT; | |
987 | av = (AV*)SSPOPPTR; | |
13057ebc DM |
988 | if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */ |
989 | SvREFCNT_dec(value); | |
161b7d16 | 990 | ptr = av_fetch(av,i,1); |
4e4c362e GS |
991 | if (ptr) { |
992 | sv = *(SV**)ptr; | |
3280af22 | 993 | if (sv && sv != &PL_sv_undef) { |
14befaf4 | 994 | if (SvTIED_mg((SV*)av, PERL_MAGIC_tied)) |
4e4c362e | 995 | (void)SvREFCNT_inc(sv); |
4e4c362e GS |
996 | goto restore_sv; |
997 | } | |
998 | } | |
999 | SvREFCNT_dec(av); | |
1000 | SvREFCNT_dec(value); | |
1001 | break; | |
161b7d16 SM |
1002 | case SAVEt_HELEM: /* hash element */ |
1003 | value = (SV*)SSPOPPTR; | |
9002cb76 | 1004 | sv = (SV*)SSPOPPTR; |
161b7d16 SM |
1005 | hv = (HV*)SSPOPPTR; |
1006 | ptr = hv_fetch_ent(hv, sv, 1, 0); | |
4e4c362e | 1007 | if (ptr) { |
7120cae1 | 1008 | const SV * const oval = HeVAL((HE*)ptr); |
3280af22 | 1009 | if (oval && oval != &PL_sv_undef) { |
4e4c362e | 1010 | ptr = &HeVAL((HE*)ptr); |
14befaf4 | 1011 | if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) |
4e4c362e | 1012 | (void)SvREFCNT_inc(*(SV**)ptr); |
4e4c362e | 1013 | SvREFCNT_dec(sv); |
13057ebc | 1014 | av = (AV*)hv; /* what to refcnt_dec */ |
4e4c362e GS |
1015 | goto restore_sv; |
1016 | } | |
1017 | } | |
1018 | SvREFCNT_dec(hv); | |
1019 | SvREFCNT_dec(sv); | |
1020 | SvREFCNT_dec(value); | |
1021 | break; | |
462e5cf6 | 1022 | case SAVEt_OP: |
533c011a | 1023 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 | 1024 | break; |
25eaa213 | 1025 | case SAVEt_HINTS: |
045ac317 RGS |
1026 | if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) { |
1027 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); | |
1028 | GvHV(PL_hintgv) = NULL; | |
1029 | } | |
3280af22 | 1030 | *(I32*)&PL_hints = (I32)SSPOPINT; |
1f26b251 NC |
1031 | if (PL_hints & HINT_LOCALIZE_HH) { |
1032 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); | |
1033 | GvHV(PL_hintgv) = (HV*)SSPOPPTR; | |
1034 | } | |
1035 | ||
b3ac6de7 | 1036 | break; |
cb50131a | 1037 | case SAVEt_COMPPAD: |
d7afa7f5 | 1038 | PL_comppad = (PAD*)SSPOPPTR; |
c2ef0052 | 1039 | if (PL_comppad) |
cb50131a CB |
1040 | PL_curpad = AvARRAY(PL_comppad); |
1041 | else | |
1042 | PL_curpad = Null(SV**); | |
1043 | break; | |
c3564e5c GS |
1044 | case SAVEt_PADSV: |
1045 | { | |
7120cae1 | 1046 | const PADOFFSET off = (PADOFFSET)SSPOPLONG; |
c3564e5c GS |
1047 | ptr = SSPOPPTR; |
1048 | if (ptr) | |
d7afa7f5 | 1049 | AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR; |
c3564e5c GS |
1050 | } |
1051 | break; | |
240fcc4a JC |
1052 | case SAVEt_SAVESWITCHSTACK: |
1053 | { | |
1054 | dSP; | |
1055 | AV* t = (AV*)SSPOPPTR; | |
1056 | AV* f = (AV*)SSPOPPTR; | |
1057 | SWITCHSTACK(t,f); | |
1058 | PL_curstackinfo->si_stack = f; | |
1059 | } | |
1060 | break; | |
79072805 | 1061 | default: |
cea2e8a9 | 1062 | Perl_croak(aTHX_ "panic: leave_scope inconsistency"); |
79072805 LW |
1063 | } |
1064 | } | |
1065 | } | |
8990e307 | 1066 | |
8990e307 | 1067 | void |
864dbfa3 | 1068 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
8990e307 | 1069 | { |
35ff7856 | 1070 | #ifdef DEBUGGING |
22c35a8c | 1071 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 | 1072 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 | 1073 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
146174a9 CB |
1074 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n", |
1075 | PTR2UV(cx->blk_oldcop)); | |
760ac839 LW |
1076 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
1077 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); | |
1078 | PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp); | |
146174a9 CB |
1079 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n", |
1080 | PTR2UV(cx->blk_oldpm)); | |
760ac839 | 1081 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 | 1082 | } |
6b35e009 | 1083 | switch (CxTYPE(cx)) { |
8990e307 LW |
1084 | case CXt_NULL: |
1085 | case CXt_BLOCK: | |
1086 | break; | |
146174a9 CB |
1087 | case CXt_FORMAT: |
1088 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", | |
1089 | PTR2UV(cx->blk_sub.cv)); | |
1090 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n", | |
1091 | PTR2UV(cx->blk_sub.gv)); | |
1092 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n", | |
1093 | PTR2UV(cx->blk_sub.dfoutgv)); | |
1094 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", | |
1095 | (int)cx->blk_sub.hasargs); | |
1096 | break; | |
8990e307 | 1097 | case CXt_SUB: |
146174a9 CB |
1098 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1099 | PTR2UV(cx->blk_sub.cv)); | |
760ac839 | 1100 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 | 1101 | (long)cx->blk_sub.olddepth); |
760ac839 | 1102 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 | 1103 | (int)cx->blk_sub.hasargs); |
146174a9 CB |
1104 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", |
1105 | (int)cx->blk_sub.lval); | |
8990e307 LW |
1106 | break; |
1107 | case CXt_EVAL: | |
760ac839 | 1108 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 | 1109 | (long)cx->blk_eval.old_in_eval); |
760ac839 | 1110 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
22c35a8c GS |
1111 | PL_op_name[cx->blk_eval.old_op_type], |
1112 | PL_op_desc[cx->blk_eval.old_op_type]); | |
0f79a09d GS |
1113 | if (cx->blk_eval.old_namesv) |
1114 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", | |
fdac8c4b | 1115 | SvPVX_const(cx->blk_eval.old_namesv)); |
146174a9 CB |
1116 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n", |
1117 | PTR2UV(cx->blk_eval.old_eval_root)); | |
8990e307 LW |
1118 | break; |
1119 | ||
1120 | case CXt_LOOP: | |
760ac839 | 1121 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 | 1122 | cx->blk_loop.label); |
760ac839 | 1123 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 | 1124 | (long)cx->blk_loop.resetsp); |
146174a9 CB |
1125 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n", |
1126 | PTR2UV(cx->blk_loop.redo_op)); | |
1127 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n", | |
1128 | PTR2UV(cx->blk_loop.next_op)); | |
1129 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n", | |
1130 | PTR2UV(cx->blk_loop.last_op)); | |
760ac839 | 1131 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 | 1132 | (long)cx->blk_loop.iterix); |
146174a9 CB |
1133 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n", |
1134 | PTR2UV(cx->blk_loop.iterary)); | |
1135 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n", | |
1136 | PTR2UV(CxITERVAR(cx))); | |
1137 | if (CxITERVAR(cx)) | |
1138 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n", | |
1139 | PTR2UV(cx->blk_loop.itersave)); | |
1140 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n", | |
1141 | PTR2UV(cx->blk_loop.iterlval)); | |
8990e307 LW |
1142 | break; |
1143 | ||
1144 | case CXt_SUBST: | |
760ac839 | 1145 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 | 1146 | (long)cx->sb_iters); |
760ac839 | 1147 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 | 1148 | (long)cx->sb_maxiters); |
35ef4773 GS |
1149 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
1150 | (long)cx->sb_rflags); | |
760ac839 | 1151 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 | 1152 | (long)cx->sb_once); |
760ac839 | 1153 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 | 1154 | cx->sb_orig); |
146174a9 CB |
1155 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n", |
1156 | PTR2UV(cx->sb_dstr)); | |
1157 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n", | |
1158 | PTR2UV(cx->sb_targ)); | |
1159 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n", | |
1160 | PTR2UV(cx->sb_s)); | |
1161 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n", | |
1162 | PTR2UV(cx->sb_m)); | |
1163 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n", | |
1164 | PTR2UV(cx->sb_strend)); | |
1165 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n", | |
1166 | PTR2UV(cx->sb_rxres)); | |
8990e307 LW |
1167 | break; |
1168 | } | |
17c3b450 | 1169 | #endif /* DEBUGGING */ |
35ff7856 | 1170 | } |
583439ab NC |
1171 | |
1172 | /* | |
1173 | * Local variables: | |
1174 | * c-indentation-style: bsd | |
1175 | * c-basic-offset: 4 | |
1176 | * indent-tabs-mode: t | |
1177 | * End: | |
1178 | * | |
d8294a4d NC |
1179 | * ex: set ts=8 sts=4 sw=4 noet: |
1180 | */ |