Commit | Line | Data |
a0d0e21e |
1 | /* scope.c |
79072805 |
2 | * |
4bb101f2 |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
241d1a3b |
4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
79072805 |
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 |
9 | */ |
10 | |
11 | /* |
12 | * "For the fashion of Minas Tirith was such that it was built on seven |
13 | * levels..." |
79072805 |
14 | */ |
15 | |
ddfa107c |
16 | /* This file contains functions to manipulate several of Perl's stacks; |
166f8a29 |
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 |
25 | #include "perl.h" |
26 | |
a0d0e21e |
27 | SV** |
864dbfa3 |
28 | Perl_stack_grow(pTHX_ SV **sp, SV **p, int n) |
a0d0e21e |
29 | { |
3280af22 |
30 | PL_stack_sp = sp; |
2ce36478 |
31 | #ifndef STRESS_REALLOC |
3280af22 |
32 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128); |
2ce36478 |
33 | #else |
6b88bc9c |
34 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1); |
2ce36478 |
35 | #endif |
3280af22 |
36 | return PL_stack_sp; |
a0d0e21e |
37 | } |
38 | |
2ce36478 |
39 | #ifndef STRESS_REALLOC |
40 | #define GROW(old) ((old) * 3 / 2) |
41 | #else |
42 | #define GROW(old) ((old) + 1) |
43 | #endif |
44 | |
e336de0d |
45 | PERL_SI * |
864dbfa3 |
46 | Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems) |
e336de0d |
47 | { |
48 | PERL_SI *si; |
e336de0d |
49 | New(56, si, 1, PERL_SI); |
50 | si->si_stack = newAV(); |
51 | AvREAL_off(si->si_stack); |
52 | av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0); |
3280af22 |
53 | AvALLOC(si->si_stack)[0] = &PL_sv_undef; |
e336de0d |
54 | AvFILLp(si->si_stack) = 0; |
55 | si->si_prev = 0; |
56 | si->si_next = 0; |
57 | si->si_cxmax = cxitems - 1; |
58 | si->si_cxix = -1; |
e788e7d3 |
59 | si->si_type = PERLSI_UNDEF; |
9965345d |
60 | New(56, si->si_cxstack, cxitems, PERL_CONTEXT); |
61 | /* Without any kind of initialising PUSHSUBST() |
62 | * in pp_subst() will read uninitialised heap. */ |
63 | Poison(si->si_cxstack, cxitems, PERL_CONTEXT); |
e336de0d |
64 | return si; |
65 | } |
66 | |
79072805 |
67 | I32 |
864dbfa3 |
68 | Perl_cxinc(pTHX) |
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69 | { |
4fc93207 |
70 | IV old_max = cxstack_max; |
2ce36478 |
71 | cxstack_max = GROW(cxstack_max); |
c09156bb |
72 | Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */ |
9965345d |
73 | /* Without any kind of initialising deep enough recursion |
74 | * will end up reading uninitialised PERL_CONTEXTs. */ |
75 | Poison(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT); |
79072805 |
76 | return cxstack_ix + 1; |
77 | } |
78 | |
79072805 |
79 | void |
864dbfa3 |
80 | Perl_push_scope(pTHX) |
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81 | { |
3280af22 |
82 | if (PL_scopestack_ix == PL_scopestack_max) { |
83 | PL_scopestack_max = GROW(PL_scopestack_max); |
84 | Renew(PL_scopestack, PL_scopestack_max, I32); |
79072805 |
85 | } |
3280af22 |
86 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 |
87 | |
88 | } |
89 | |
90 | void |
864dbfa3 |
91 | Perl_pop_scope(pTHX) |
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92 | { |
3280af22 |
93 | I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 |
94 | LEAVE_SCOPE(oldsave); |
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95 | } |
96 | |
97 | void |
864dbfa3 |
98 | Perl_markstack_grow(pTHX) |
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99 | { |
3280af22 |
100 | I32 oldmax = PL_markstack_max - PL_markstack; |
2ce36478 |
101 | I32 newmax = GROW(oldmax); |
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102 | |
3280af22 |
103 | Renew(PL_markstack, newmax, I32); |
104 | PL_markstack_ptr = PL_markstack + oldmax; |
105 | PL_markstack_max = PL_markstack + newmax; |
a0d0e21e |
106 | } |
107 | |
108 | void |
864dbfa3 |
109 | Perl_savestack_grow(pTHX) |
79072805 |
110 | { |
8aacddc1 |
111 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
3280af22 |
112 | Renew(PL_savestack, PL_savestack_max, ANY); |
79072805 |
113 | } |
114 | |
4b3c1a47 |
115 | void |
116 | Perl_savestack_grow_cnt(pTHX_ I32 need) |
117 | { |
118 | PL_savestack_max = PL_savestack_ix + need; |
119 | Renew(PL_savestack, PL_savestack_max, ANY); |
120 | } |
121 | |
2ce36478 |
122 | #undef GROW |
123 | |
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124 | void |
864dbfa3 |
125 | Perl_tmps_grow(pTHX_ I32 n) |
677b06e3 |
126 | { |
677b06e3 |
127 | #ifndef STRESS_REALLOC |
128 | if (n < 128) |
129 | n = (PL_tmps_max < 512) ? 128 : 512; |
130 | #endif |
131 | PL_tmps_max = PL_tmps_ix + n + 1; |
132 | Renew(PL_tmps_stack, PL_tmps_max, SV*); |
133 | } |
134 | |
135 | |
136 | void |
864dbfa3 |
137 | Perl_free_tmps(pTHX) |
79072805 |
138 | { |
139 | /* XXX should tmps_floor live in cxstack? */ |
3280af22 |
140 | I32 myfloor = PL_tmps_floor; |
141 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
142 | SV* sv = PL_tmps_stack[PL_tmps_ix]; |
143 | PL_tmps_stack[PL_tmps_ix--] = Nullsv; |
8aacddc1 |
144 | if (sv && sv != &PL_sv_undef) { |
463ee0b2 |
145 | SvTEMP_off(sv); |
8990e307 |
146 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 |
147 | } |
79072805 |
148 | } |
149 | } |
150 | |
76e3520e |
151 | STATIC SV * |
cea2e8a9 |
152 | S_save_scalar_at(pTHX_ SV **sptr) |
79072805 |
153 | { |
154 | register SV *sv; |
7a4c00b4 |
155 | SV *osv = *sptr; |
79072805 |
156 | |
7a4c00b4 |
157 | sv = *sptr = NEWSV(0,0); |
a0d0e21e |
158 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
ac117f44 |
159 | MAGIC *mg; |
79072805 |
160 | sv_upgrade(sv, SvTYPE(osv)); |
a0d0e21e |
161 | if (SvGMAGICAL(osv)) { |
3280af22 |
162 | bool oldtainted = PL_tainted; |
5cfc7842 |
163 | mg_get(osv); /* note, can croak! */ |
14befaf4 |
164 | if (PL_tainting && PL_tainted && |
165 | (mg = mg_find(osv, PERL_MAGIC_taint))) { |
748a9306 |
166 | SAVESPTR(mg->mg_obj); |
167 | mg->mg_obj = osv; |
168 | } |
a0d0e21e |
169 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
8aacddc1 |
170 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
3280af22 |
171 | PL_tainted = oldtainted; |
a0d0e21e |
172 | } |
79072805 |
173 | SvMAGIC(sv) = SvMAGIC(osv); |
ac117f44 |
174 | /* if it's a special scalar or if it has no 'set' magic, |
175 | * propagate the SvREADONLY flag. --rgs 20030922 */ |
176 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
dda0e828 |
177 | if (mg->mg_type == '\0' |
178 | || !(mg->mg_virtual && mg->mg_virtual->svt_set)) |
ac117f44 |
179 | { |
180 | SvFLAGS(sv) |= SvREADONLY(osv); |
181 | break; |
182 | } |
183 | } |
184 | SvFLAGS(sv) |= SvMAGICAL(osv); |
2d5e9e5d |
185 | /* XXX SvMAGIC() is *shared* between osv and sv. This can |
186 | * lead to coredumps when both SVs are destroyed without one |
187 | * of their SvMAGIC() slots being NULLed. */ |
3280af22 |
188 | PL_localizing = 1; |
79072805 |
189 | SvSETMAGIC(sv); |
3280af22 |
190 | PL_localizing = 0; |
79072805 |
191 | } |
192 | return sv; |
193 | } |
194 | |
7a4c00b4 |
195 | SV * |
864dbfa3 |
196 | Perl_save_scalar(pTHX_ GV *gv) |
7a4c00b4 |
197 | { |
4e4c362e |
198 | SV **sptr = &GvSV(gv); |
7a4c00b4 |
199 | SSCHECK(3); |
4e4c362e |
200 | SSPUSHPTR(SvREFCNT_inc(gv)); |
201 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
202 | SSPUSHINT(SAVEt_SV); |
4e4c362e |
203 | return save_scalar_at(sptr); |
7a4c00b4 |
204 | } |
205 | |
206 | SV* |
864dbfa3 |
207 | Perl_save_svref(pTHX_ SV **sptr) |
7a4c00b4 |
208 | { |
209 | SSCHECK(3); |
210 | SSPUSHPTR(sptr); |
4e4c362e |
211 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
212 | SSPUSHINT(SAVEt_SVREF); |
213 | return save_scalar_at(sptr); |
214 | } |
215 | |
f4dd75d9 |
216 | /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to |
b9d12d37 |
217 | * restore a global SV to its prior contents, freeing new value. */ |
218 | void |
864dbfa3 |
219 | Perl_save_generic_svref(pTHX_ SV **sptr) |
b9d12d37 |
220 | { |
b9d12d37 |
221 | SSCHECK(3); |
222 | SSPUSHPTR(sptr); |
223 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
224 | SSPUSHINT(SAVEt_GENERIC_SVREF); |
225 | } |
226 | |
f4dd75d9 |
227 | /* Like save_pptr(), but also Safefree()s the new value if it is different |
228 | * from the old one. Can be used to restore a global char* to its prior |
229 | * contents, freeing new value. */ |
230 | void |
231 | Perl_save_generic_pvref(pTHX_ char **str) |
232 | { |
f4dd75d9 |
233 | SSCHECK(3); |
234 | SSPUSHPTR(str); |
235 | SSPUSHPTR(*str); |
236 | SSPUSHINT(SAVEt_GENERIC_PVREF); |
237 | } |
238 | |
05ec9bb3 |
239 | /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree(). |
240 | * Can be used to restore a shared global char* to its prior |
241 | * contents, freeing new value. */ |
242 | void |
243 | Perl_save_shared_pvref(pTHX_ char **str) |
244 | { |
245 | SSCHECK(3); |
246 | SSPUSHPTR(str); |
247 | SSPUSHPTR(*str); |
248 | SSPUSHINT(SAVEt_SHARED_PVREF); |
249 | } |
250 | |
14f338dc |
251 | /* set the SvFLAGS specified by mask to the values in val */ |
252 | |
253 | void |
254 | Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val) |
255 | { |
256 | SSCHECK(4); |
257 | SSPUSHPTR(sv); |
258 | SSPUSHINT(mask); |
259 | SSPUSHINT(val); |
260 | SSPUSHINT(SAVEt_SET_SVFLAGS); |
261 | } |
262 | |
79072805 |
263 | void |
864dbfa3 |
264 | Perl_save_gp(pTHX_ GV *gv, I32 empty) |
79072805 |
265 | { |
4b3c1a47 |
266 | SSGROW(6); |
fb73857a |
267 | SSPUSHIV((IV)SvLEN(gv)); |
268 | SvLEN(gv) = 0; /* forget that anything was allocated here */ |
269 | SSPUSHIV((IV)SvCUR(gv)); |
270 | SSPUSHPTR(SvPVX(gv)); |
271 | SvPOK_off(gv); |
4633a7c4 |
272 | SSPUSHPTR(SvREFCNT_inc(gv)); |
5f05dabc |
273 | SSPUSHPTR(GvGP(gv)); |
79072805 |
274 | SSPUSHINT(SAVEt_GP); |
275 | |
5f05dabc |
276 | if (empty) { |
277 | register GP *gp; |
fae75791 |
278 | |
146174a9 |
279 | Newz(602, gp, 1, GP); |
280 | |
fae75791 |
281 | if (GvCVu(gv)) |
3280af22 |
282 | PL_sub_generation++; /* taking a method out of circulation */ |
146174a9 |
283 | if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) { |
284 | gp->gp_io = newIO(); |
285 | IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START; |
286 | } |
44a8e56a |
287 | GvGP(gv) = gp_ref(gp); |
5f05dabc |
288 | GvSV(gv) = NEWSV(72,0); |
146174a9 |
289 | GvLINE(gv) = CopLINE(PL_curcop); |
94051fc1 |
290 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : ""; |
5f05dabc |
291 | GvEGV(gv) = gv; |
292 | } |
293 | else { |
44a8e56a |
294 | gp_ref(GvGP(gv)); |
5f05dabc |
295 | GvINTRO_on(gv); |
296 | } |
79072805 |
297 | } |
79072805 |
298 | |
79072805 |
299 | AV * |
864dbfa3 |
300 | Perl_save_ary(pTHX_ GV *gv) |
79072805 |
301 | { |
67a38de0 |
302 | AV *oav = GvAVn(gv); |
303 | AV *av; |
fb73857a |
304 | |
67a38de0 |
305 | if (!AvREAL(oav) && AvREIFY(oav)) |
306 | av_reify(oav); |
79072805 |
307 | SSCHECK(3); |
308 | SSPUSHPTR(gv); |
67a38de0 |
309 | SSPUSHPTR(oav); |
79072805 |
310 | SSPUSHINT(SAVEt_AV); |
311 | |
312 | GvAV(gv) = Null(AV*); |
fb73857a |
313 | av = GvAVn(gv); |
314 | if (SvMAGIC(oav)) { |
315 | SvMAGIC(av) = SvMAGIC(oav); |
32da55ab |
316 | SvFLAGS((SV*)av) |= SvMAGICAL(oav); |
fb73857a |
317 | SvMAGICAL_off(oav); |
318 | SvMAGIC(oav) = 0; |
3280af22 |
319 | PL_localizing = 1; |
fb73857a |
320 | SvSETMAGIC((SV*)av); |
3280af22 |
321 | PL_localizing = 0; |
fb73857a |
322 | } |
323 | return av; |
79072805 |
324 | } |
325 | |
326 | HV * |
864dbfa3 |
327 | Perl_save_hash(pTHX_ GV *gv) |
79072805 |
328 | { |
fb73857a |
329 | HV *ohv, *hv; |
330 | |
79072805 |
331 | SSCHECK(3); |
332 | SSPUSHPTR(gv); |
fb73857a |
333 | SSPUSHPTR(ohv = GvHVn(gv)); |
79072805 |
334 | SSPUSHINT(SAVEt_HV); |
335 | |
336 | GvHV(gv) = Null(HV*); |
fb73857a |
337 | hv = GvHVn(gv); |
338 | if (SvMAGIC(ohv)) { |
339 | SvMAGIC(hv) = SvMAGIC(ohv); |
32da55ab |
340 | SvFLAGS((SV*)hv) |= SvMAGICAL(ohv); |
fb73857a |
341 | SvMAGICAL_off(ohv); |
342 | SvMAGIC(ohv) = 0; |
3280af22 |
343 | PL_localizing = 1; |
fb73857a |
344 | SvSETMAGIC((SV*)hv); |
3280af22 |
345 | PL_localizing = 0; |
fb73857a |
346 | } |
347 | return hv; |
79072805 |
348 | } |
349 | |
350 | void |
864dbfa3 |
351 | Perl_save_item(pTHX_ register SV *item) |
79072805 |
352 | { |
f2b990bf |
353 | register SV *sv = newSVsv(item); |
79072805 |
354 | |
355 | SSCHECK(3); |
356 | SSPUSHPTR(item); /* remember the pointer */ |
79072805 |
357 | SSPUSHPTR(sv); /* remember the value */ |
358 | SSPUSHINT(SAVEt_ITEM); |
359 | } |
360 | |
361 | void |
864dbfa3 |
362 | Perl_save_int(pTHX_ int *intp) |
79072805 |
363 | { |
364 | SSCHECK(3); |
365 | SSPUSHINT(*intp); |
366 | SSPUSHPTR(intp); |
367 | SSPUSHINT(SAVEt_INT); |
368 | } |
369 | |
370 | void |
864dbfa3 |
371 | Perl_save_long(pTHX_ long int *longp) |
85e6fe83 |
372 | { |
373 | SSCHECK(3); |
374 | SSPUSHLONG(*longp); |
375 | SSPUSHPTR(longp); |
376 | SSPUSHINT(SAVEt_LONG); |
377 | } |
378 | |
379 | void |
9febdf04 |
380 | Perl_save_bool(pTHX_ bool *boolp) |
381 | { |
382 | SSCHECK(3); |
383 | SSPUSHBOOL(*boolp); |
384 | SSPUSHPTR(boolp); |
385 | SSPUSHINT(SAVEt_BOOL); |
386 | } |
387 | |
388 | void |
864dbfa3 |
389 | Perl_save_I32(pTHX_ I32 *intp) |
79072805 |
390 | { |
391 | SSCHECK(3); |
392 | SSPUSHINT(*intp); |
393 | SSPUSHPTR(intp); |
394 | SSPUSHINT(SAVEt_I32); |
395 | } |
396 | |
a0d0e21e |
397 | void |
864dbfa3 |
398 | Perl_save_I16(pTHX_ I16 *intp) |
55497cff |
399 | { |
400 | SSCHECK(3); |
401 | SSPUSHINT(*intp); |
402 | SSPUSHPTR(intp); |
403 | SSPUSHINT(SAVEt_I16); |
404 | } |
405 | |
406 | void |
146174a9 |
407 | Perl_save_I8(pTHX_ I8 *bytep) |
408 | { |
146174a9 |
409 | SSCHECK(3); |
410 | SSPUSHINT(*bytep); |
411 | SSPUSHPTR(bytep); |
412 | SSPUSHINT(SAVEt_I8); |
413 | } |
414 | |
415 | void |
864dbfa3 |
416 | Perl_save_iv(pTHX_ IV *ivp) |
a0d0e21e |
417 | { |
418 | SSCHECK(3); |
4aa0a1f7 |
419 | SSPUSHIV(*ivp); |
a0d0e21e |
420 | SSPUSHPTR(ivp); |
421 | SSPUSHINT(SAVEt_IV); |
422 | } |
423 | |
85e6fe83 |
424 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
425 | * force word-alignment and we'll miss the pointer. |
426 | */ |
427 | void |
864dbfa3 |
428 | Perl_save_pptr(pTHX_ char **pptr) |
85e6fe83 |
429 | { |
430 | SSCHECK(3); |
431 | SSPUSHPTR(*pptr); |
432 | SSPUSHPTR(pptr); |
433 | SSPUSHINT(SAVEt_PPTR); |
434 | } |
435 | |
79072805 |
436 | void |
146174a9 |
437 | Perl_save_vptr(pTHX_ void *ptr) |
438 | { |
146174a9 |
439 | SSCHECK(3); |
440 | SSPUSHPTR(*(char**)ptr); |
441 | SSPUSHPTR(ptr); |
442 | SSPUSHINT(SAVEt_VPTR); |
443 | } |
444 | |
445 | void |
864dbfa3 |
446 | Perl_save_sptr(pTHX_ SV **sptr) |
79072805 |
447 | { |
448 | SSCHECK(3); |
449 | SSPUSHPTR(*sptr); |
450 | SSPUSHPTR(sptr); |
451 | SSPUSHINT(SAVEt_SPTR); |
452 | } |
453 | |
c3564e5c |
454 | void |
455 | Perl_save_padsv(pTHX_ PADOFFSET off) |
456 | { |
c3564e5c |
457 | SSCHECK(4); |
f3548bdc |
458 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
c3564e5c |
459 | SSPUSHPTR(PL_curpad[off]); |
f3548bdc |
460 | SSPUSHPTR(PL_comppad); |
c3564e5c |
461 | SSPUSHLONG((long)off); |
462 | SSPUSHINT(SAVEt_PADSV); |
463 | } |
464 | |
54b9620d |
465 | SV ** |
864dbfa3 |
466 | Perl_save_threadsv(pTHX_ PADOFFSET i) |
54b9620d |
467 | { |
cea2e8a9 |
468 | Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl"); |
54b9620d |
469 | return 0; |
54b9620d |
470 | } |
471 | |
79072805 |
472 | void |
864dbfa3 |
473 | Perl_save_nogv(pTHX_ GV *gv) |
79072805 |
474 | { |
475 | SSCHECK(2); |
476 | SSPUSHPTR(gv); |
477 | SSPUSHINT(SAVEt_NSTAB); |
478 | } |
479 | |
480 | void |
864dbfa3 |
481 | Perl_save_hptr(pTHX_ HV **hptr) |
79072805 |
482 | { |
483 | SSCHECK(3); |
85e6fe83 |
484 | SSPUSHPTR(*hptr); |
79072805 |
485 | SSPUSHPTR(hptr); |
486 | SSPUSHINT(SAVEt_HPTR); |
487 | } |
488 | |
489 | void |
864dbfa3 |
490 | Perl_save_aptr(pTHX_ AV **aptr) |
79072805 |
491 | { |
492 | SSCHECK(3); |
85e6fe83 |
493 | SSPUSHPTR(*aptr); |
79072805 |
494 | SSPUSHPTR(aptr); |
495 | SSPUSHINT(SAVEt_APTR); |
496 | } |
497 | |
498 | void |
864dbfa3 |
499 | Perl_save_freesv(pTHX_ SV *sv) |
8990e307 |
500 | { |
501 | SSCHECK(2); |
502 | SSPUSHPTR(sv); |
503 | SSPUSHINT(SAVEt_FREESV); |
504 | } |
505 | |
506 | void |
26d9b02f |
507 | Perl_save_mortalizesv(pTHX_ SV *sv) |
508 | { |
509 | SSCHECK(2); |
510 | SSPUSHPTR(sv); |
511 | SSPUSHINT(SAVEt_MORTALIZESV); |
512 | } |
513 | |
514 | void |
864dbfa3 |
515 | Perl_save_freeop(pTHX_ OP *o) |
8990e307 |
516 | { |
517 | SSCHECK(2); |
11343788 |
518 | SSPUSHPTR(o); |
8990e307 |
519 | SSPUSHINT(SAVEt_FREEOP); |
520 | } |
521 | |
522 | void |
864dbfa3 |
523 | Perl_save_freepv(pTHX_ char *pv) |
8990e307 |
524 | { |
525 | SSCHECK(2); |
526 | SSPUSHPTR(pv); |
527 | SSPUSHINT(SAVEt_FREEPV); |
528 | } |
529 | |
530 | void |
864dbfa3 |
531 | Perl_save_clearsv(pTHX_ SV **svp) |
8990e307 |
532 | { |
f3548bdc |
533 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
8990e307 |
534 | SSCHECK(2); |
3280af22 |
535 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 |
536 | SSPUSHINT(SAVEt_CLEARSV); |
d9d18af6 |
537 | SvPADSTALE_off(*svp); /* mark lexical as active */ |
8990e307 |
538 | } |
539 | |
540 | void |
864dbfa3 |
541 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
8990e307 |
542 | { |
543 | SSCHECK(4); |
544 | SSPUSHINT(klen); |
545 | SSPUSHPTR(key); |
4e4c362e |
546 | SSPUSHPTR(SvREFCNT_inc(hv)); |
8990e307 |
547 | SSPUSHINT(SAVEt_DELETE); |
548 | } |
549 | |
550 | void |
864dbfa3 |
551 | Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg) |
79072805 |
552 | { |
553 | register SV *sv; |
554 | register I32 i; |
555 | |
79072805 |
556 | for (i = 1; i <= maxsarg; i++) { |
79072805 |
557 | sv = NEWSV(0,0); |
558 | sv_setsv(sv,sarg[i]); |
f46d017c |
559 | SSCHECK(3); |
560 | SSPUSHPTR(sarg[i]); /* remember the pointer */ |
79072805 |
561 | SSPUSHPTR(sv); /* remember the value */ |
562 | SSPUSHINT(SAVEt_ITEM); |
563 | } |
564 | } |
565 | |
566 | void |
146174a9 |
567 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
a0d0e21e |
568 | { |
569 | SSCHECK(3); |
570 | SSPUSHDPTR(f); |
571 | SSPUSHPTR(p); |
572 | SSPUSHINT(SAVEt_DESTRUCTOR); |
573 | } |
574 | |
575 | void |
146174a9 |
576 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
577 | { |
146174a9 |
578 | SSCHECK(3); |
579 | SSPUSHDXPTR(f); |
580 | SSPUSHPTR(p); |
581 | SSPUSHINT(SAVEt_DESTRUCTOR_X); |
582 | } |
583 | |
584 | void |
864dbfa3 |
585 | Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr) |
4e4c362e |
586 | { |
bfc4de9f |
587 | SV *sv; |
4e4c362e |
588 | SSCHECK(4); |
589 | SSPUSHPTR(SvREFCNT_inc(av)); |
590 | SSPUSHINT(idx); |
591 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
592 | SSPUSHINT(SAVEt_AELEM); |
5dd42e15 |
593 | /* if it gets reified later, the restore will have the wrong refcnt */ |
594 | if (!AvREAL(av) && AvREIFY(av)) |
595 | SvREFCNT_inc(*sptr); |
4e4c362e |
596 | save_scalar_at(sptr); |
bfc4de9f |
597 | sv = *sptr; |
598 | /* If we're localizing a tied array element, this new sv |
599 | * won't actually be stored in the array - so it won't get |
600 | * reaped when the localize ends. Ensure it gets reaped by |
601 | * mortifying it instead. DAPM */ |
602 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) |
603 | sv_2mortal(sv); |
4e4c362e |
604 | } |
605 | |
606 | void |
864dbfa3 |
607 | Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr) |
4e4c362e |
608 | { |
bfc4de9f |
609 | SV *sv; |
4e4c362e |
610 | SSCHECK(4); |
611 | SSPUSHPTR(SvREFCNT_inc(hv)); |
612 | SSPUSHPTR(SvREFCNT_inc(key)); |
613 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
614 | SSPUSHINT(SAVEt_HELEM); |
615 | save_scalar_at(sptr); |
bfc4de9f |
616 | sv = *sptr; |
617 | /* If we're localizing a tied hash element, this new sv |
618 | * won't actually be stored in the hash - so it won't get |
619 | * reaped when the localize ends. Ensure it gets reaped by |
620 | * mortifying it instead. DAPM */ |
621 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) |
622 | sv_2mortal(sv); |
4e4c362e |
623 | } |
624 | |
625 | void |
864dbfa3 |
626 | Perl_save_op(pTHX) |
462e5cf6 |
627 | { |
462e5cf6 |
628 | SSCHECK(2); |
533c011a |
629 | SSPUSHPTR(PL_op); |
462e5cf6 |
630 | SSPUSHINT(SAVEt_OP); |
631 | } |
632 | |
455ece5e |
633 | I32 |
864dbfa3 |
634 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
455ece5e |
635 | { |
455ece5e |
636 | register I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
8aacddc1 |
637 | - (char*)PL_savestack); |
455ece5e |
638 | register I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
639 | |
640 | /* SSCHECK may not be good enough */ |
641 | while (PL_savestack_ix + elems + 2 > PL_savestack_max) |
8aacddc1 |
642 | savestack_grow(); |
455ece5e |
643 | |
644 | PL_savestack_ix += elems; |
645 | SSPUSHINT(elems); |
646 | SSPUSHINT(SAVEt_ALLOC); |
647 | return start; |
648 | } |
649 | |
462e5cf6 |
650 | void |
864dbfa3 |
651 | Perl_leave_scope(pTHX_ I32 base) |
79072805 |
652 | { |
653 | register SV *sv; |
654 | register SV *value; |
655 | register GV *gv; |
656 | register AV *av; |
657 | register HV *hv; |
658 | register void* ptr; |
f4dd75d9 |
659 | register char* str; |
161b7d16 |
660 | I32 i; |
79072805 |
661 | |
662 | if (base < -1) |
cea2e8a9 |
663 | Perl_croak(aTHX_ "panic: corrupt saved stack index"); |
3280af22 |
664 | while (PL_savestack_ix > base) { |
79072805 |
665 | switch (SSPOPINT) { |
666 | case SAVEt_ITEM: /* normal string */ |
667 | value = (SV*)SSPOPPTR; |
668 | sv = (SV*)SSPOPPTR; |
669 | sv_replace(sv,value); |
3280af22 |
670 | PL_localizing = 2; |
79072805 |
671 | SvSETMAGIC(sv); |
3280af22 |
672 | PL_localizing = 0; |
79072805 |
673 | break; |
8aacddc1 |
674 | case SAVEt_SV: /* scalar reference */ |
79072805 |
675 | value = (SV*)SSPOPPTR; |
676 | gv = (GV*)SSPOPPTR; |
7a4c00b4 |
677 | ptr = &GvSV(gv); |
5dd42e15 |
678 | av = (AV*)gv; /* what to refcnt_dec */ |
7a4c00b4 |
679 | goto restore_sv; |
8aacddc1 |
680 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
f4dd75d9 |
681 | str = (char*)SSPOPPTR; |
682 | ptr = SSPOPPTR; |
683 | if (*(char**)ptr != str) { |
684 | Safefree(*(char**)ptr); |
685 | *(char**)ptr = str; |
686 | } |
687 | break; |
05ec9bb3 |
688 | case SAVEt_SHARED_PVREF: /* shared pv */ |
689 | str = (char*)SSPOPPTR; |
690 | ptr = SSPOPPTR; |
691 | if (*(char**)ptr != str) { |
5e54c26f |
692 | #ifdef NETWARE |
9ecbcc42 |
693 | PerlMem_free(*(char**)ptr); |
5e54c26f |
694 | #else |
05ec9bb3 |
695 | PerlMemShared_free(*(char**)ptr); |
5e54c26f |
696 | #endif |
05ec9bb3 |
697 | *(char**)ptr = str; |
698 | } |
699 | break; |
8aacddc1 |
700 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
b9d12d37 |
701 | value = (SV*)SSPOPPTR; |
702 | ptr = SSPOPPTR; |
f4dd75d9 |
703 | sv = *(SV**)ptr; |
704 | *(SV**)ptr = value; |
705 | SvREFCNT_dec(sv); |
b9d12d37 |
706 | SvREFCNT_dec(value); |
707 | break; |
8aacddc1 |
708 | case SAVEt_SVREF: /* scalar reference */ |
7a4c00b4 |
709 | value = (SV*)SSPOPPTR; |
79072805 |
710 | ptr = SSPOPPTR; |
5dd42e15 |
711 | av = Nullav; /* what to refcnt_dec */ |
7a4c00b4 |
712 | restore_sv: |
79072805 |
713 | sv = *(SV**)ptr; |
146174a9 |
714 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
54b9620d |
715 | "restore svref: %p %p:%s -> %p:%s\n", |
8aacddc1 |
716 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
cdec4f49 |
717 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
718 | SvTYPE(sv) != SVt_PVGV) |
719 | { |
a0d0e21e |
720 | (void)SvUPGRADE(value, SvTYPE(sv)); |
721 | SvMAGIC(value) = SvMAGIC(sv); |
722 | SvFLAGS(value) |= SvMAGICAL(sv); |
723 | SvMAGICAL_off(sv); |
79072805 |
724 | SvMAGIC(sv) = 0; |
a0d0e21e |
725 | } |
2d5e9e5d |
726 | /* XXX This branch is pretty bogus. This code irretrievably |
727 | * clears(!) the magic on the SV (either to avoid further |
728 | * croaking that might ensue when the SvSETMAGIC() below is |
729 | * called, or to avoid two different SVs pointing at the same |
730 | * SvMAGIC()). This needs a total rethink. --GSAR */ |
cdec4f49 |
731 | else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) && |
732 | SvTYPE(value) != SVt_PVGV) |
733 | { |
7a4c00b4 |
734 | SvFLAGS(value) |= (SvFLAGS(value) & |
8aacddc1 |
735 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
7a4c00b4 |
736 | SvMAGICAL_off(value); |
2d5e9e5d |
737 | /* XXX this is a leak when we get here because the |
738 | * mg_get() in save_scalar_at() croaked */ |
739 | SvMAGIC(value) = 0; |
7a4c00b4 |
740 | } |
a0d0e21e |
741 | *(SV**)ptr = value; |
db733481 |
742 | SvREFCNT_dec(sv); |
3280af22 |
743 | PL_localizing = 2; |
a0d0e21e |
744 | SvSETMAGIC(value); |
3280af22 |
745 | PL_localizing = 0; |
4e4c362e |
746 | SvREFCNT_dec(value); |
5dd42e15 |
747 | if (av) /* actually an av, hv or gv */ |
748 | SvREFCNT_dec(av); |
8aacddc1 |
749 | break; |
750 | case SAVEt_AV: /* array reference */ |
79072805 |
751 | av = (AV*)SSPOPPTR; |
752 | gv = (GV*)SSPOPPTR; |
fb73857a |
753 | if (GvAV(gv)) { |
754 | AV *goner = GvAV(gv); |
755 | SvMAGIC(av) = SvMAGIC(goner); |
32da55ab |
756 | SvFLAGS((SV*)av) |= SvMAGICAL(goner); |
fb73857a |
757 | SvMAGICAL_off(goner); |
758 | SvMAGIC(goner) = 0; |
759 | SvREFCNT_dec(goner); |
760 | } |
8aacddc1 |
761 | GvAV(gv) = av; |
fb73857a |
762 | if (SvMAGICAL(av)) { |
3280af22 |
763 | PL_localizing = 2; |
fb73857a |
764 | SvSETMAGIC((SV*)av); |
3280af22 |
765 | PL_localizing = 0; |
fb73857a |
766 | } |
8aacddc1 |
767 | break; |
768 | case SAVEt_HV: /* hash reference */ |
79072805 |
769 | hv = (HV*)SSPOPPTR; |
770 | gv = (GV*)SSPOPPTR; |
fb73857a |
771 | if (GvHV(gv)) { |
772 | HV *goner = GvHV(gv); |
773 | SvMAGIC(hv) = SvMAGIC(goner); |
774 | SvFLAGS(hv) |= SvMAGICAL(goner); |
775 | SvMAGICAL_off(goner); |
776 | SvMAGIC(goner) = 0; |
777 | SvREFCNT_dec(goner); |
778 | } |
8aacddc1 |
779 | GvHV(gv) = hv; |
fb73857a |
780 | if (SvMAGICAL(hv)) { |
3280af22 |
781 | PL_localizing = 2; |
fb73857a |
782 | SvSETMAGIC((SV*)hv); |
3280af22 |
783 | PL_localizing = 0; |
fb73857a |
784 | } |
8aacddc1 |
785 | break; |
79072805 |
786 | case SAVEt_INT: /* int reference */ |
787 | ptr = SSPOPPTR; |
788 | *(int*)ptr = (int)SSPOPINT; |
789 | break; |
85e6fe83 |
790 | case SAVEt_LONG: /* long reference */ |
791 | ptr = SSPOPPTR; |
792 | *(long*)ptr = (long)SSPOPLONG; |
793 | break; |
9febdf04 |
794 | case SAVEt_BOOL: /* bool reference */ |
795 | ptr = SSPOPPTR; |
796 | *(bool*)ptr = (bool)SSPOPBOOL; |
797 | break; |
79072805 |
798 | case SAVEt_I32: /* I32 reference */ |
799 | ptr = SSPOPPTR; |
800 | *(I32*)ptr = (I32)SSPOPINT; |
801 | break; |
55497cff |
802 | case SAVEt_I16: /* I16 reference */ |
803 | ptr = SSPOPPTR; |
804 | *(I16*)ptr = (I16)SSPOPINT; |
805 | break; |
146174a9 |
806 | case SAVEt_I8: /* I8 reference */ |
807 | ptr = SSPOPPTR; |
808 | *(I8*)ptr = (I8)SSPOPINT; |
809 | break; |
a0d0e21e |
810 | case SAVEt_IV: /* IV reference */ |
811 | ptr = SSPOPPTR; |
812 | *(IV*)ptr = (IV)SSPOPIV; |
813 | break; |
79072805 |
814 | case SAVEt_SPTR: /* SV* reference */ |
815 | ptr = SSPOPPTR; |
816 | *(SV**)ptr = (SV*)SSPOPPTR; |
817 | break; |
146174a9 |
818 | case SAVEt_VPTR: /* random* reference */ |
85e6fe83 |
819 | case SAVEt_PPTR: /* char* reference */ |
820 | ptr = SSPOPPTR; |
821 | *(char**)ptr = (char*)SSPOPPTR; |
822 | break; |
79072805 |
823 | case SAVEt_HPTR: /* HV* reference */ |
824 | ptr = SSPOPPTR; |
825 | *(HV**)ptr = (HV*)SSPOPPTR; |
826 | break; |
827 | case SAVEt_APTR: /* AV* reference */ |
828 | ptr = SSPOPPTR; |
829 | *(AV**)ptr = (AV*)SSPOPPTR; |
830 | break; |
831 | case SAVEt_NSTAB: |
832 | gv = (GV*)SSPOPPTR; |
1f96a9ed |
833 | (void)sv_clear((SV*)gv); |
79072805 |
834 | break; |
fb73857a |
835 | case SAVEt_GP: /* scalar reference */ |
79072805 |
836 | ptr = SSPOPPTR; |
837 | gv = (GV*)SSPOPPTR; |
8aacddc1 |
838 | if (SvPVX(gv) && SvLEN(gv) > 0) { |
839 | Safefree(SvPVX(gv)); |
840 | } |
841 | SvPVX(gv) = (char *)SSPOPPTR; |
842 | SvCUR(gv) = (STRLEN)SSPOPIV; |
843 | SvLEN(gv) = (STRLEN)SSPOPIV; |
844 | gp_free(gv); |
845 | GvGP(gv) = (GP*)ptr; |
fae75791 |
846 | if (GvCVu(gv)) |
3280af22 |
847 | PL_sub_generation++; /* putting a method back into circulation */ |
4633a7c4 |
848 | SvREFCNT_dec(gv); |
8aacddc1 |
849 | break; |
8990e307 |
850 | case SAVEt_FREESV: |
851 | ptr = SSPOPPTR; |
852 | SvREFCNT_dec((SV*)ptr); |
853 | break; |
26d9b02f |
854 | case SAVEt_MORTALIZESV: |
855 | ptr = SSPOPPTR; |
856 | sv_2mortal((SV*)ptr); |
857 | break; |
8990e307 |
858 | case SAVEt_FREEOP: |
859 | ptr = SSPOPPTR; |
f3548bdc |
860 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */ |
8990e307 |
861 | op_free((OP*)ptr); |
862 | break; |
863 | case SAVEt_FREEPV: |
864 | ptr = SSPOPPTR; |
865 | Safefree((char*)ptr); |
866 | break; |
867 | case SAVEt_CLEARSV: |
3280af22 |
868 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 |
869 | sv = *(SV**)ptr; |
dd2155a4 |
870 | |
871 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, |
f3548bdc |
872 | "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n", |
873 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), |
874 | (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), |
dd2155a4 |
875 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" |
876 | )); |
877 | |
bc44cdaf |
878 | /* Can clear pad variable in place? */ |
879 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { |
8aacddc1 |
880 | /* |
881 | * if a my variable that was made readonly is going out of |
882 | * scope, we want to remove the readonlyness so that it can |
883 | * go out of scope quietly |
8aacddc1 |
884 | */ |
a26e96df |
885 | if (SvPADMY(sv) && !SvFAKE(sv)) |
8aacddc1 |
886 | SvREADONLY_off(sv); |
887 | |
6fc92669 |
888 | if (SvTHINKFIRST(sv)) |
840a7b70 |
889 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF); |
a0d0e21e |
890 | if (SvMAGICAL(sv)) |
891 | mg_free(sv); |
8990e307 |
892 | |
893 | switch (SvTYPE(sv)) { |
894 | case SVt_NULL: |
895 | break; |
896 | case SVt_PVAV: |
44a8e56a |
897 | av_clear((AV*)sv); |
8990e307 |
898 | break; |
899 | case SVt_PVHV: |
44a8e56a |
900 | hv_clear((HV*)sv); |
8990e307 |
901 | break; |
902 | case SVt_PVCV: |
cea2e8a9 |
903 | Perl_croak(aTHX_ "panic: leave_scope pad code"); |
8990e307 |
904 | default: |
0c34ef67 |
905 | SvOK_off(sv); |
8990e307 |
906 | break; |
907 | } |
d9d18af6 |
908 | SvPADSTALE_on(sv); /* mark as no longer live */ |
8990e307 |
909 | } |
910 | else { /* Someone has a claim on this, so abandon it. */ |
235cc2e3 |
911 | U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP); |
8990e307 |
912 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
913 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; |
914 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; |
915 | default: *(SV**)ptr = NEWSV(0,0); break; |
916 | } |
53868620 |
917 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
d9d18af6 |
918 | /* preserve pad nature, but also mark as not live |
919 | * for any closure capturing */ |
2740392c |
920 | SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE; |
8990e307 |
921 | } |
922 | break; |
923 | case SAVEt_DELETE: |
924 | ptr = SSPOPPTR; |
925 | hv = (HV*)ptr; |
926 | ptr = SSPOPPTR; |
748a9306 |
927 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
4e4c362e |
928 | SvREFCNT_dec(hv); |
8aacddc1 |
929 | Safefree(ptr); |
8990e307 |
930 | break; |
a0d0e21e |
931 | case SAVEt_DESTRUCTOR: |
932 | ptr = SSPOPPTR; |
146174a9 |
933 | (*SSPOPDPTR)(ptr); |
934 | break; |
935 | case SAVEt_DESTRUCTOR_X: |
936 | ptr = SSPOPPTR; |
acfe0abc |
937 | (*SSPOPDXPTR)(aTHX_ ptr); |
a0d0e21e |
938 | break; |
939 | case SAVEt_REGCONTEXT: |
455ece5e |
940 | case SAVEt_ALLOC: |
161b7d16 |
941 | i = SSPOPINT; |
3280af22 |
942 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e |
943 | break; |
55497cff |
944 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 |
945 | i = SSPOPINT; |
3280af22 |
946 | PL_stack_sp = PL_stack_base + i; |
55497cff |
947 | break; |
161b7d16 |
948 | case SAVEt_AELEM: /* array element */ |
949 | value = (SV*)SSPOPPTR; |
950 | i = SSPOPINT; |
951 | av = (AV*)SSPOPPTR; |
5dd42e15 |
952 | if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */ |
953 | SvREFCNT_dec(value); |
161b7d16 |
954 | ptr = av_fetch(av,i,1); |
4e4c362e |
955 | if (ptr) { |
956 | sv = *(SV**)ptr; |
3280af22 |
957 | if (sv && sv != &PL_sv_undef) { |
14befaf4 |
958 | if (SvTIED_mg((SV*)av, PERL_MAGIC_tied)) |
4e4c362e |
959 | (void)SvREFCNT_inc(sv); |
4e4c362e |
960 | goto restore_sv; |
961 | } |
962 | } |
963 | SvREFCNT_dec(av); |
964 | SvREFCNT_dec(value); |
965 | break; |
161b7d16 |
966 | case SAVEt_HELEM: /* hash element */ |
967 | value = (SV*)SSPOPPTR; |
9002cb76 |
968 | sv = (SV*)SSPOPPTR; |
161b7d16 |
969 | hv = (HV*)SSPOPPTR; |
970 | ptr = hv_fetch_ent(hv, sv, 1, 0); |
4e4c362e |
971 | if (ptr) { |
972 | SV *oval = HeVAL((HE*)ptr); |
3280af22 |
973 | if (oval && oval != &PL_sv_undef) { |
4e4c362e |
974 | ptr = &HeVAL((HE*)ptr); |
14befaf4 |
975 | if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) |
4e4c362e |
976 | (void)SvREFCNT_inc(*(SV**)ptr); |
4e4c362e |
977 | SvREFCNT_dec(sv); |
5dd42e15 |
978 | av = (AV*)hv; /* what to refcnt_dec */ |
4e4c362e |
979 | goto restore_sv; |
980 | } |
981 | } |
982 | SvREFCNT_dec(hv); |
983 | SvREFCNT_dec(sv); |
984 | SvREFCNT_dec(value); |
985 | break; |
462e5cf6 |
986 | case SAVEt_OP: |
533c011a |
987 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 |
988 | break; |
25eaa213 |
989 | case SAVEt_HINTS: |
045ac317 |
990 | if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) { |
991 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); |
992 | GvHV(PL_hintgv) = NULL; |
993 | } |
3280af22 |
994 | *(I32*)&PL_hints = (I32)SSPOPINT; |
dfa41748 |
995 | if (PL_hints & HINT_LOCALIZE_HH) { |
996 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); |
997 | GvHV(PL_hintgv) = (HV*)SSPOPPTR; |
998 | } |
999 | |
b3ac6de7 |
1000 | break; |
cb50131a |
1001 | case SAVEt_COMPPAD: |
f3548bdc |
1002 | PL_comppad = (PAD*)SSPOPPTR; |
58ed4fbe |
1003 | if (PL_comppad) |
cb50131a |
1004 | PL_curpad = AvARRAY(PL_comppad); |
1005 | else |
1006 | PL_curpad = Null(SV**); |
1007 | break; |
c3564e5c |
1008 | case SAVEt_PADSV: |
1009 | { |
1010 | PADOFFSET off = (PADOFFSET)SSPOPLONG; |
1011 | ptr = SSPOPPTR; |
1012 | if (ptr) |
f3548bdc |
1013 | AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR; |
c3564e5c |
1014 | } |
1015 | break; |
8b7059b1 |
1016 | case SAVEt_SAVESWITCHSTACK: |
1017 | { |
1018 | dSP; |
1019 | AV* t = (AV*)SSPOPPTR; |
1020 | AV* f = (AV*)SSPOPPTR; |
1021 | SWITCHSTACK(t,f); |
1022 | PL_curstackinfo->si_stack = f; |
1023 | } |
1024 | break; |
14f338dc |
1025 | case SAVEt_SET_SVFLAGS: |
1026 | { |
1027 | U32 val = (U32)SSPOPINT; |
1028 | U32 mask = (U32)SSPOPINT; |
1029 | sv = (SV*)SSPOPPTR; |
1030 | SvFLAGS(sv) &= ~mask; |
1031 | SvFLAGS(sv) |= val; |
1032 | } |
1033 | break; |
79072805 |
1034 | default: |
cea2e8a9 |
1035 | Perl_croak(aTHX_ "panic: leave_scope inconsistency"); |
79072805 |
1036 | } |
1037 | } |
1038 | } |
8990e307 |
1039 | |
8990e307 |
1040 | void |
864dbfa3 |
1041 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
8990e307 |
1042 | { |
35ff7856 |
1043 | #ifdef DEBUGGING |
22c35a8c |
1044 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 |
1045 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 |
1046 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
146174a9 |
1047 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n", |
1048 | PTR2UV(cx->blk_oldcop)); |
760ac839 |
1049 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
1050 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); |
146174a9 |
1051 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n", |
1052 | PTR2UV(cx->blk_oldpm)); |
760ac839 |
1053 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 |
1054 | } |
6b35e009 |
1055 | switch (CxTYPE(cx)) { |
8990e307 |
1056 | case CXt_NULL: |
1057 | case CXt_BLOCK: |
1058 | break; |
146174a9 |
1059 | case CXt_FORMAT: |
1060 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1061 | PTR2UV(cx->blk_sub.cv)); |
1062 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n", |
1063 | PTR2UV(cx->blk_sub.gv)); |
1064 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n", |
1065 | PTR2UV(cx->blk_sub.dfoutgv)); |
1066 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
1067 | (int)cx->blk_sub.hasargs); |
f39bc417 |
1068 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n", |
1069 | PTR2UV(cx->blk_sub.retop)); |
146174a9 |
1070 | break; |
8990e307 |
1071 | case CXt_SUB: |
146174a9 |
1072 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1073 | PTR2UV(cx->blk_sub.cv)); |
760ac839 |
1074 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 |
1075 | (long)cx->blk_sub.olddepth); |
760ac839 |
1076 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 |
1077 | (int)cx->blk_sub.hasargs); |
146174a9 |
1078 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", |
1079 | (int)cx->blk_sub.lval); |
f39bc417 |
1080 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n", |
1081 | PTR2UV(cx->blk_sub.retop)); |
8990e307 |
1082 | break; |
1083 | case CXt_EVAL: |
760ac839 |
1084 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 |
1085 | (long)cx->blk_eval.old_in_eval); |
760ac839 |
1086 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
22c35a8c |
1087 | PL_op_name[cx->blk_eval.old_op_type], |
1088 | PL_op_desc[cx->blk_eval.old_op_type]); |
0f79a09d |
1089 | if (cx->blk_eval.old_namesv) |
1090 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", |
1091 | SvPVX(cx->blk_eval.old_namesv)); |
146174a9 |
1092 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n", |
1093 | PTR2UV(cx->blk_eval.old_eval_root)); |
f39bc417 |
1094 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n", |
1095 | PTR2UV(cx->blk_eval.retop)); |
8990e307 |
1096 | break; |
1097 | |
1098 | case CXt_LOOP: |
760ac839 |
1099 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 |
1100 | cx->blk_loop.label); |
760ac839 |
1101 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 |
1102 | (long)cx->blk_loop.resetsp); |
146174a9 |
1103 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n", |
1104 | PTR2UV(cx->blk_loop.redo_op)); |
1105 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n", |
1106 | PTR2UV(cx->blk_loop.next_op)); |
1107 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n", |
1108 | PTR2UV(cx->blk_loop.last_op)); |
760ac839 |
1109 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 |
1110 | (long)cx->blk_loop.iterix); |
146174a9 |
1111 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n", |
1112 | PTR2UV(cx->blk_loop.iterary)); |
1113 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n", |
1114 | PTR2UV(CxITERVAR(cx))); |
1115 | if (CxITERVAR(cx)) |
1116 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n", |
1117 | PTR2UV(cx->blk_loop.itersave)); |
1118 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n", |
1119 | PTR2UV(cx->blk_loop.iterlval)); |
8990e307 |
1120 | break; |
1121 | |
1122 | case CXt_SUBST: |
760ac839 |
1123 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 |
1124 | (long)cx->sb_iters); |
760ac839 |
1125 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 |
1126 | (long)cx->sb_maxiters); |
35ef4773 |
1127 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
1128 | (long)cx->sb_rflags); |
760ac839 |
1129 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 |
1130 | (long)cx->sb_once); |
760ac839 |
1131 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 |
1132 | cx->sb_orig); |
146174a9 |
1133 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n", |
1134 | PTR2UV(cx->sb_dstr)); |
1135 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n", |
1136 | PTR2UV(cx->sb_targ)); |
1137 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n", |
1138 | PTR2UV(cx->sb_s)); |
1139 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n", |
1140 | PTR2UV(cx->sb_m)); |
1141 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n", |
1142 | PTR2UV(cx->sb_strend)); |
1143 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n", |
1144 | PTR2UV(cx->sb_rxres)); |
8990e307 |
1145 | break; |
1146 | } |
17c3b450 |
1147 | #endif /* DEBUGGING */ |
35ff7856 |
1148 | } |
241d1a3b |
1149 | |
1150 | /* |
1151 | * Local variables: |
1152 | * c-indentation-style: bsd |
1153 | * c-basic-offset: 4 |
1154 | * indent-tabs-mode: t |
1155 | * End: |
1156 | * |
edf815fd |
1157 | * vim: shiftwidth=4: |
241d1a3b |
1158 | */ |