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) |
79072805 |
69 | { |
a3b680e6 |
70 | const 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) |
79072805 |
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) |
79072805 |
92 | { |
35a4481c |
93 | const I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 |
94 | LEAVE_SCOPE(oldsave); |
79072805 |
95 | } |
96 | |
97 | void |
864dbfa3 |
98 | Perl_markstack_grow(pTHX) |
a0d0e21e |
99 | { |
35a4481c |
100 | const I32 oldmax = PL_markstack_max - PL_markstack; |
101 | const I32 newmax = GROW(oldmax); |
a0d0e21e |
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 | |
79072805 |
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? */ |
35a4481c |
140 | const I32 myfloor = PL_tmps_floor; |
3280af22 |
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)) { |
35a4481c |
162 | const 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 | } |
b162af07 |
173 | SvMAGIC_set(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)); |
b162af07 |
268 | SvLEN_set(gv, 0); /* forget that anything was allocated here */ |
fb73857a |
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); |
07409e01 |
290 | /* XXX Ideally this cast would be replaced with a change to const char* |
291 | in the struct. */ |
292 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : (char *) ""; |
5f05dabc |
293 | GvEGV(gv) = gv; |
294 | } |
295 | else { |
44a8e56a |
296 | gp_ref(GvGP(gv)); |
5f05dabc |
297 | GvINTRO_on(gv); |
298 | } |
79072805 |
299 | } |
79072805 |
300 | |
79072805 |
301 | AV * |
864dbfa3 |
302 | Perl_save_ary(pTHX_ GV *gv) |
79072805 |
303 | { |
67a38de0 |
304 | AV *oav = GvAVn(gv); |
305 | AV *av; |
fb73857a |
306 | |
67a38de0 |
307 | if (!AvREAL(oav) && AvREIFY(oav)) |
308 | av_reify(oav); |
79072805 |
309 | SSCHECK(3); |
310 | SSPUSHPTR(gv); |
67a38de0 |
311 | SSPUSHPTR(oav); |
79072805 |
312 | SSPUSHINT(SAVEt_AV); |
313 | |
314 | GvAV(gv) = Null(AV*); |
fb73857a |
315 | av = GvAVn(gv); |
316 | if (SvMAGIC(oav)) { |
b162af07 |
317 | SvMAGIC_set(av, SvMAGIC(oav)); |
32da55ab |
318 | SvFLAGS((SV*)av) |= SvMAGICAL(oav); |
fb73857a |
319 | SvMAGICAL_off(oav); |
b162af07 |
320 | SvMAGIC_set(oav, NULL); |
3280af22 |
321 | PL_localizing = 1; |
fb73857a |
322 | SvSETMAGIC((SV*)av); |
3280af22 |
323 | PL_localizing = 0; |
fb73857a |
324 | } |
325 | return av; |
79072805 |
326 | } |
327 | |
328 | HV * |
864dbfa3 |
329 | Perl_save_hash(pTHX_ GV *gv) |
79072805 |
330 | { |
fb73857a |
331 | HV *ohv, *hv; |
332 | |
79072805 |
333 | SSCHECK(3); |
334 | SSPUSHPTR(gv); |
fb73857a |
335 | SSPUSHPTR(ohv = GvHVn(gv)); |
79072805 |
336 | SSPUSHINT(SAVEt_HV); |
337 | |
338 | GvHV(gv) = Null(HV*); |
fb73857a |
339 | hv = GvHVn(gv); |
340 | if (SvMAGIC(ohv)) { |
b162af07 |
341 | SvMAGIC_set(hv, SvMAGIC(ohv)); |
32da55ab |
342 | SvFLAGS((SV*)hv) |= SvMAGICAL(ohv); |
fb73857a |
343 | SvMAGICAL_off(ohv); |
b162af07 |
344 | SvMAGIC_set(ohv, NULL); |
3280af22 |
345 | PL_localizing = 1; |
fb73857a |
346 | SvSETMAGIC((SV*)hv); |
3280af22 |
347 | PL_localizing = 0; |
fb73857a |
348 | } |
349 | return hv; |
79072805 |
350 | } |
351 | |
352 | void |
864dbfa3 |
353 | Perl_save_item(pTHX_ register SV *item) |
79072805 |
354 | { |
f2b990bf |
355 | register SV *sv = newSVsv(item); |
79072805 |
356 | |
357 | SSCHECK(3); |
358 | SSPUSHPTR(item); /* remember the pointer */ |
79072805 |
359 | SSPUSHPTR(sv); /* remember the value */ |
360 | SSPUSHINT(SAVEt_ITEM); |
361 | } |
362 | |
363 | void |
864dbfa3 |
364 | Perl_save_int(pTHX_ int *intp) |
79072805 |
365 | { |
366 | SSCHECK(3); |
367 | SSPUSHINT(*intp); |
368 | SSPUSHPTR(intp); |
369 | SSPUSHINT(SAVEt_INT); |
370 | } |
371 | |
372 | void |
864dbfa3 |
373 | Perl_save_long(pTHX_ long int *longp) |
85e6fe83 |
374 | { |
375 | SSCHECK(3); |
376 | SSPUSHLONG(*longp); |
377 | SSPUSHPTR(longp); |
378 | SSPUSHINT(SAVEt_LONG); |
379 | } |
380 | |
381 | void |
9febdf04 |
382 | Perl_save_bool(pTHX_ bool *boolp) |
383 | { |
384 | SSCHECK(3); |
385 | SSPUSHBOOL(*boolp); |
386 | SSPUSHPTR(boolp); |
387 | SSPUSHINT(SAVEt_BOOL); |
388 | } |
389 | |
390 | void |
864dbfa3 |
391 | Perl_save_I32(pTHX_ I32 *intp) |
79072805 |
392 | { |
393 | SSCHECK(3); |
394 | SSPUSHINT(*intp); |
395 | SSPUSHPTR(intp); |
396 | SSPUSHINT(SAVEt_I32); |
397 | } |
398 | |
a0d0e21e |
399 | void |
864dbfa3 |
400 | Perl_save_I16(pTHX_ I16 *intp) |
55497cff |
401 | { |
402 | SSCHECK(3); |
403 | SSPUSHINT(*intp); |
404 | SSPUSHPTR(intp); |
405 | SSPUSHINT(SAVEt_I16); |
406 | } |
407 | |
408 | void |
146174a9 |
409 | Perl_save_I8(pTHX_ I8 *bytep) |
410 | { |
146174a9 |
411 | SSCHECK(3); |
412 | SSPUSHINT(*bytep); |
413 | SSPUSHPTR(bytep); |
414 | SSPUSHINT(SAVEt_I8); |
415 | } |
416 | |
417 | void |
864dbfa3 |
418 | Perl_save_iv(pTHX_ IV *ivp) |
a0d0e21e |
419 | { |
420 | SSCHECK(3); |
4aa0a1f7 |
421 | SSPUSHIV(*ivp); |
a0d0e21e |
422 | SSPUSHPTR(ivp); |
423 | SSPUSHINT(SAVEt_IV); |
424 | } |
425 | |
85e6fe83 |
426 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
427 | * force word-alignment and we'll miss the pointer. |
428 | */ |
429 | void |
864dbfa3 |
430 | Perl_save_pptr(pTHX_ char **pptr) |
85e6fe83 |
431 | { |
432 | SSCHECK(3); |
433 | SSPUSHPTR(*pptr); |
434 | SSPUSHPTR(pptr); |
435 | SSPUSHINT(SAVEt_PPTR); |
436 | } |
437 | |
79072805 |
438 | void |
146174a9 |
439 | Perl_save_vptr(pTHX_ void *ptr) |
440 | { |
146174a9 |
441 | SSCHECK(3); |
442 | SSPUSHPTR(*(char**)ptr); |
443 | SSPUSHPTR(ptr); |
444 | SSPUSHINT(SAVEt_VPTR); |
445 | } |
446 | |
447 | void |
864dbfa3 |
448 | Perl_save_sptr(pTHX_ SV **sptr) |
79072805 |
449 | { |
450 | SSCHECK(3); |
451 | SSPUSHPTR(*sptr); |
452 | SSPUSHPTR(sptr); |
453 | SSPUSHINT(SAVEt_SPTR); |
454 | } |
455 | |
c3564e5c |
456 | void |
457 | Perl_save_padsv(pTHX_ PADOFFSET off) |
458 | { |
c3564e5c |
459 | SSCHECK(4); |
f3548bdc |
460 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
c3564e5c |
461 | SSPUSHPTR(PL_curpad[off]); |
f3548bdc |
462 | SSPUSHPTR(PL_comppad); |
c3564e5c |
463 | SSPUSHLONG((long)off); |
464 | SSPUSHINT(SAVEt_PADSV); |
465 | } |
466 | |
54b9620d |
467 | SV ** |
864dbfa3 |
468 | Perl_save_threadsv(pTHX_ PADOFFSET i) |
54b9620d |
469 | { |
cea2e8a9 |
470 | Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl"); |
73d840c0 |
471 | (void)i; |
0dbb1585 |
472 | NORETURN_FUNCTION_END; |
54b9620d |
473 | } |
474 | |
79072805 |
475 | void |
864dbfa3 |
476 | Perl_save_nogv(pTHX_ GV *gv) |
79072805 |
477 | { |
478 | SSCHECK(2); |
479 | SSPUSHPTR(gv); |
480 | SSPUSHINT(SAVEt_NSTAB); |
481 | } |
482 | |
483 | void |
864dbfa3 |
484 | Perl_save_hptr(pTHX_ HV **hptr) |
79072805 |
485 | { |
486 | SSCHECK(3); |
85e6fe83 |
487 | SSPUSHPTR(*hptr); |
79072805 |
488 | SSPUSHPTR(hptr); |
489 | SSPUSHINT(SAVEt_HPTR); |
490 | } |
491 | |
492 | void |
864dbfa3 |
493 | Perl_save_aptr(pTHX_ AV **aptr) |
79072805 |
494 | { |
495 | SSCHECK(3); |
85e6fe83 |
496 | SSPUSHPTR(*aptr); |
79072805 |
497 | SSPUSHPTR(aptr); |
498 | SSPUSHINT(SAVEt_APTR); |
499 | } |
500 | |
501 | void |
864dbfa3 |
502 | Perl_save_freesv(pTHX_ SV *sv) |
8990e307 |
503 | { |
504 | SSCHECK(2); |
505 | SSPUSHPTR(sv); |
506 | SSPUSHINT(SAVEt_FREESV); |
507 | } |
508 | |
509 | void |
26d9b02f |
510 | Perl_save_mortalizesv(pTHX_ SV *sv) |
511 | { |
512 | SSCHECK(2); |
513 | SSPUSHPTR(sv); |
514 | SSPUSHINT(SAVEt_MORTALIZESV); |
515 | } |
516 | |
517 | void |
864dbfa3 |
518 | Perl_save_freeop(pTHX_ OP *o) |
8990e307 |
519 | { |
520 | SSCHECK(2); |
11343788 |
521 | SSPUSHPTR(o); |
8990e307 |
522 | SSPUSHINT(SAVEt_FREEOP); |
523 | } |
524 | |
525 | void |
864dbfa3 |
526 | Perl_save_freepv(pTHX_ char *pv) |
8990e307 |
527 | { |
528 | SSCHECK(2); |
529 | SSPUSHPTR(pv); |
530 | SSPUSHINT(SAVEt_FREEPV); |
531 | } |
532 | |
533 | void |
864dbfa3 |
534 | Perl_save_clearsv(pTHX_ SV **svp) |
8990e307 |
535 | { |
f3548bdc |
536 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
8990e307 |
537 | SSCHECK(2); |
3280af22 |
538 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 |
539 | SSPUSHINT(SAVEt_CLEARSV); |
d9d18af6 |
540 | SvPADSTALE_off(*svp); /* mark lexical as active */ |
8990e307 |
541 | } |
542 | |
543 | void |
864dbfa3 |
544 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
8990e307 |
545 | { |
546 | SSCHECK(4); |
547 | SSPUSHINT(klen); |
548 | SSPUSHPTR(key); |
4e4c362e |
549 | SSPUSHPTR(SvREFCNT_inc(hv)); |
8990e307 |
550 | SSPUSHINT(SAVEt_DELETE); |
551 | } |
552 | |
553 | void |
864dbfa3 |
554 | Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg) |
79072805 |
555 | { |
556 | register SV *sv; |
557 | register I32 i; |
558 | |
79072805 |
559 | for (i = 1; i <= maxsarg; i++) { |
79072805 |
560 | sv = NEWSV(0,0); |
561 | sv_setsv(sv,sarg[i]); |
f46d017c |
562 | SSCHECK(3); |
563 | SSPUSHPTR(sarg[i]); /* remember the pointer */ |
79072805 |
564 | SSPUSHPTR(sv); /* remember the value */ |
565 | SSPUSHINT(SAVEt_ITEM); |
566 | } |
567 | } |
568 | |
569 | void |
146174a9 |
570 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
a0d0e21e |
571 | { |
572 | SSCHECK(3); |
573 | SSPUSHDPTR(f); |
574 | SSPUSHPTR(p); |
575 | SSPUSHINT(SAVEt_DESTRUCTOR); |
576 | } |
577 | |
578 | void |
146174a9 |
579 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
580 | { |
146174a9 |
581 | SSCHECK(3); |
582 | SSPUSHDXPTR(f); |
583 | SSPUSHPTR(p); |
584 | SSPUSHINT(SAVEt_DESTRUCTOR_X); |
585 | } |
586 | |
587 | void |
35a4481c |
588 | Perl_save_aelem(pTHX_ const AV *av, I32 idx, SV **sptr) |
4e4c362e |
589 | { |
bfc4de9f |
590 | SV *sv; |
4e4c362e |
591 | SSCHECK(4); |
592 | SSPUSHPTR(SvREFCNT_inc(av)); |
593 | SSPUSHINT(idx); |
594 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
595 | SSPUSHINT(SAVEt_AELEM); |
5dd42e15 |
596 | /* if it gets reified later, the restore will have the wrong refcnt */ |
597 | if (!AvREAL(av) && AvREIFY(av)) |
7fc63493 |
598 | (void)SvREFCNT_inc(*sptr); |
4e4c362e |
599 | save_scalar_at(sptr); |
bfc4de9f |
600 | sv = *sptr; |
601 | /* If we're localizing a tied array element, this new sv |
602 | * won't actually be stored in the array - so it won't get |
603 | * reaped when the localize ends. Ensure it gets reaped by |
604 | * mortifying it instead. DAPM */ |
605 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) |
606 | sv_2mortal(sv); |
4e4c362e |
607 | } |
608 | |
609 | void |
e1ec3a88 |
610 | Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr) |
4e4c362e |
611 | { |
bfc4de9f |
612 | SV *sv; |
4e4c362e |
613 | SSCHECK(4); |
614 | SSPUSHPTR(SvREFCNT_inc(hv)); |
615 | SSPUSHPTR(SvREFCNT_inc(key)); |
616 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
617 | SSPUSHINT(SAVEt_HELEM); |
618 | save_scalar_at(sptr); |
bfc4de9f |
619 | sv = *sptr; |
620 | /* If we're localizing a tied hash element, this new sv |
621 | * won't actually be stored in the hash - so it won't get |
622 | * reaped when the localize ends. Ensure it gets reaped by |
623 | * mortifying it instead. DAPM */ |
624 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) |
625 | sv_2mortal(sv); |
4e4c362e |
626 | } |
627 | |
628 | void |
864dbfa3 |
629 | Perl_save_op(pTHX) |
462e5cf6 |
630 | { |
462e5cf6 |
631 | SSCHECK(2); |
533c011a |
632 | SSPUSHPTR(PL_op); |
462e5cf6 |
633 | SSPUSHINT(SAVEt_OP); |
634 | } |
635 | |
455ece5e |
636 | I32 |
864dbfa3 |
637 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
455ece5e |
638 | { |
35a4481c |
639 | register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
8aacddc1 |
640 | - (char*)PL_savestack); |
35a4481c |
641 | register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
455ece5e |
642 | |
643 | /* SSCHECK may not be good enough */ |
644 | while (PL_savestack_ix + elems + 2 > PL_savestack_max) |
8aacddc1 |
645 | savestack_grow(); |
455ece5e |
646 | |
647 | PL_savestack_ix += elems; |
648 | SSPUSHINT(elems); |
649 | SSPUSHINT(SAVEt_ALLOC); |
650 | return start; |
651 | } |
652 | |
462e5cf6 |
653 | void |
864dbfa3 |
654 | Perl_leave_scope(pTHX_ I32 base) |
79072805 |
655 | { |
656 | register SV *sv; |
657 | register SV *value; |
658 | register GV *gv; |
659 | register AV *av; |
660 | register HV *hv; |
661 | register void* ptr; |
f4dd75d9 |
662 | register char* str; |
161b7d16 |
663 | I32 i; |
79072805 |
664 | |
665 | if (base < -1) |
cea2e8a9 |
666 | Perl_croak(aTHX_ "panic: corrupt saved stack index"); |
3280af22 |
667 | while (PL_savestack_ix > base) { |
79072805 |
668 | switch (SSPOPINT) { |
669 | case SAVEt_ITEM: /* normal string */ |
670 | value = (SV*)SSPOPPTR; |
671 | sv = (SV*)SSPOPPTR; |
672 | sv_replace(sv,value); |
3280af22 |
673 | PL_localizing = 2; |
79072805 |
674 | SvSETMAGIC(sv); |
3280af22 |
675 | PL_localizing = 0; |
79072805 |
676 | break; |
8aacddc1 |
677 | case SAVEt_SV: /* scalar reference */ |
79072805 |
678 | value = (SV*)SSPOPPTR; |
679 | gv = (GV*)SSPOPPTR; |
7a4c00b4 |
680 | ptr = &GvSV(gv); |
5dd42e15 |
681 | av = (AV*)gv; /* what to refcnt_dec */ |
7a4c00b4 |
682 | goto restore_sv; |
8aacddc1 |
683 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
f4dd75d9 |
684 | str = (char*)SSPOPPTR; |
685 | ptr = SSPOPPTR; |
686 | if (*(char**)ptr != str) { |
687 | Safefree(*(char**)ptr); |
688 | *(char**)ptr = str; |
689 | } |
690 | break; |
05ec9bb3 |
691 | case SAVEt_SHARED_PVREF: /* shared pv */ |
692 | str = (char*)SSPOPPTR; |
693 | ptr = SSPOPPTR; |
694 | if (*(char**)ptr != str) { |
5e54c26f |
695 | #ifdef NETWARE |
9ecbcc42 |
696 | PerlMem_free(*(char**)ptr); |
5e54c26f |
697 | #else |
05ec9bb3 |
698 | PerlMemShared_free(*(char**)ptr); |
5e54c26f |
699 | #endif |
05ec9bb3 |
700 | *(char**)ptr = str; |
701 | } |
702 | break; |
8aacddc1 |
703 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
b9d12d37 |
704 | value = (SV*)SSPOPPTR; |
705 | ptr = SSPOPPTR; |
f4dd75d9 |
706 | sv = *(SV**)ptr; |
707 | *(SV**)ptr = value; |
708 | SvREFCNT_dec(sv); |
b9d12d37 |
709 | SvREFCNT_dec(value); |
710 | break; |
8aacddc1 |
711 | case SAVEt_SVREF: /* scalar reference */ |
7a4c00b4 |
712 | value = (SV*)SSPOPPTR; |
79072805 |
713 | ptr = SSPOPPTR; |
5dd42e15 |
714 | av = Nullav; /* what to refcnt_dec */ |
7a4c00b4 |
715 | restore_sv: |
79072805 |
716 | sv = *(SV**)ptr; |
146174a9 |
717 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
54b9620d |
718 | "restore svref: %p %p:%s -> %p:%s\n", |
8aacddc1 |
719 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
cdec4f49 |
720 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
721 | SvTYPE(sv) != SVt_PVGV) |
722 | { |
a0d0e21e |
723 | (void)SvUPGRADE(value, SvTYPE(sv)); |
b162af07 |
724 | SvMAGIC_set(value, SvMAGIC(sv)); |
a0d0e21e |
725 | SvFLAGS(value) |= SvMAGICAL(sv); |
726 | SvMAGICAL_off(sv); |
b162af07 |
727 | SvMAGIC_set(sv, 0); |
a0d0e21e |
728 | } |
2d5e9e5d |
729 | /* XXX This branch is pretty bogus. This code irretrievably |
730 | * clears(!) the magic on the SV (either to avoid further |
731 | * croaking that might ensue when the SvSETMAGIC() below is |
732 | * called, or to avoid two different SVs pointing at the same |
733 | * SvMAGIC()). This needs a total rethink. --GSAR */ |
cdec4f49 |
734 | else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) && |
735 | SvTYPE(value) != SVt_PVGV) |
736 | { |
7a4c00b4 |
737 | SvFLAGS(value) |= (SvFLAGS(value) & |
8aacddc1 |
738 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
7a4c00b4 |
739 | SvMAGICAL_off(value); |
2d5e9e5d |
740 | /* XXX this is a leak when we get here because the |
741 | * mg_get() in save_scalar_at() croaked */ |
b162af07 |
742 | SvMAGIC_set(value, NULL); |
7a4c00b4 |
743 | } |
a0d0e21e |
744 | *(SV**)ptr = value; |
db733481 |
745 | SvREFCNT_dec(sv); |
3280af22 |
746 | PL_localizing = 2; |
a0d0e21e |
747 | SvSETMAGIC(value); |
3280af22 |
748 | PL_localizing = 0; |
4e4c362e |
749 | SvREFCNT_dec(value); |
5dd42e15 |
750 | if (av) /* actually an av, hv or gv */ |
751 | SvREFCNT_dec(av); |
8aacddc1 |
752 | break; |
753 | case SAVEt_AV: /* array reference */ |
79072805 |
754 | av = (AV*)SSPOPPTR; |
755 | gv = (GV*)SSPOPPTR; |
fb73857a |
756 | if (GvAV(gv)) { |
35a4481c |
757 | AV * const goner = GvAV(gv); |
b162af07 |
758 | SvMAGIC_set(av, SvMAGIC(goner)); |
32da55ab |
759 | SvFLAGS((SV*)av) |= SvMAGICAL(goner); |
fb73857a |
760 | SvMAGICAL_off(goner); |
b162af07 |
761 | SvMAGIC_set(goner, NULL); |
fb73857a |
762 | SvREFCNT_dec(goner); |
763 | } |
8aacddc1 |
764 | GvAV(gv) = av; |
fb73857a |
765 | if (SvMAGICAL(av)) { |
3280af22 |
766 | PL_localizing = 2; |
fb73857a |
767 | SvSETMAGIC((SV*)av); |
3280af22 |
768 | PL_localizing = 0; |
fb73857a |
769 | } |
8aacddc1 |
770 | break; |
771 | case SAVEt_HV: /* hash reference */ |
79072805 |
772 | hv = (HV*)SSPOPPTR; |
773 | gv = (GV*)SSPOPPTR; |
fb73857a |
774 | if (GvHV(gv)) { |
35a4481c |
775 | HV * const goner = GvHV(gv); |
b162af07 |
776 | SvMAGIC_set(hv, SvMAGIC(goner)); |
fb73857a |
777 | SvFLAGS(hv) |= SvMAGICAL(goner); |
778 | SvMAGICAL_off(goner); |
b162af07 |
779 | SvMAGIC_set(goner, NULL); |
fb73857a |
780 | SvREFCNT_dec(goner); |
781 | } |
8aacddc1 |
782 | GvHV(gv) = hv; |
fb73857a |
783 | if (SvMAGICAL(hv)) { |
3280af22 |
784 | PL_localizing = 2; |
fb73857a |
785 | SvSETMAGIC((SV*)hv); |
3280af22 |
786 | PL_localizing = 0; |
fb73857a |
787 | } |
8aacddc1 |
788 | break; |
79072805 |
789 | case SAVEt_INT: /* int reference */ |
790 | ptr = SSPOPPTR; |
791 | *(int*)ptr = (int)SSPOPINT; |
792 | break; |
85e6fe83 |
793 | case SAVEt_LONG: /* long reference */ |
794 | ptr = SSPOPPTR; |
795 | *(long*)ptr = (long)SSPOPLONG; |
796 | break; |
9febdf04 |
797 | case SAVEt_BOOL: /* bool reference */ |
798 | ptr = SSPOPPTR; |
799 | *(bool*)ptr = (bool)SSPOPBOOL; |
800 | break; |
79072805 |
801 | case SAVEt_I32: /* I32 reference */ |
802 | ptr = SSPOPPTR; |
803 | *(I32*)ptr = (I32)SSPOPINT; |
804 | break; |
55497cff |
805 | case SAVEt_I16: /* I16 reference */ |
806 | ptr = SSPOPPTR; |
807 | *(I16*)ptr = (I16)SSPOPINT; |
808 | break; |
146174a9 |
809 | case SAVEt_I8: /* I8 reference */ |
810 | ptr = SSPOPPTR; |
811 | *(I8*)ptr = (I8)SSPOPINT; |
812 | break; |
a0d0e21e |
813 | case SAVEt_IV: /* IV reference */ |
814 | ptr = SSPOPPTR; |
815 | *(IV*)ptr = (IV)SSPOPIV; |
816 | break; |
79072805 |
817 | case SAVEt_SPTR: /* SV* reference */ |
818 | ptr = SSPOPPTR; |
819 | *(SV**)ptr = (SV*)SSPOPPTR; |
820 | break; |
146174a9 |
821 | case SAVEt_VPTR: /* random* reference */ |
85e6fe83 |
822 | case SAVEt_PPTR: /* char* reference */ |
823 | ptr = SSPOPPTR; |
824 | *(char**)ptr = (char*)SSPOPPTR; |
825 | break; |
79072805 |
826 | case SAVEt_HPTR: /* HV* reference */ |
827 | ptr = SSPOPPTR; |
828 | *(HV**)ptr = (HV*)SSPOPPTR; |
829 | break; |
830 | case SAVEt_APTR: /* AV* reference */ |
831 | ptr = SSPOPPTR; |
832 | *(AV**)ptr = (AV*)SSPOPPTR; |
833 | break; |
834 | case SAVEt_NSTAB: |
835 | gv = (GV*)SSPOPPTR; |
1f96a9ed |
836 | (void)sv_clear((SV*)gv); |
79072805 |
837 | break; |
fb73857a |
838 | case SAVEt_GP: /* scalar reference */ |
79072805 |
839 | ptr = SSPOPPTR; |
840 | gv = (GV*)SSPOPPTR; |
8aacddc1 |
841 | if (SvPVX(gv) && SvLEN(gv) > 0) { |
842 | Safefree(SvPVX(gv)); |
843 | } |
f880fe2f |
844 | SvPV_set(gv, (char *)SSPOPPTR); |
b162af07 |
845 | SvCUR_set(gv, (STRLEN)SSPOPIV); |
846 | SvLEN_set(gv, (STRLEN)SSPOPIV); |
8aacddc1 |
847 | gp_free(gv); |
848 | GvGP(gv) = (GP*)ptr; |
fae75791 |
849 | if (GvCVu(gv)) |
3280af22 |
850 | PL_sub_generation++; /* putting a method back into circulation */ |
4633a7c4 |
851 | SvREFCNT_dec(gv); |
8aacddc1 |
852 | break; |
8990e307 |
853 | case SAVEt_FREESV: |
854 | ptr = SSPOPPTR; |
855 | SvREFCNT_dec((SV*)ptr); |
856 | break; |
26d9b02f |
857 | case SAVEt_MORTALIZESV: |
858 | ptr = SSPOPPTR; |
859 | sv_2mortal((SV*)ptr); |
860 | break; |
8990e307 |
861 | case SAVEt_FREEOP: |
862 | ptr = SSPOPPTR; |
f3548bdc |
863 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */ |
8990e307 |
864 | op_free((OP*)ptr); |
865 | break; |
866 | case SAVEt_FREEPV: |
867 | ptr = SSPOPPTR; |
1df70142 |
868 | Safefree(ptr); |
8990e307 |
869 | break; |
870 | case SAVEt_CLEARSV: |
3280af22 |
871 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 |
872 | sv = *(SV**)ptr; |
dd2155a4 |
873 | |
874 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, |
f3548bdc |
875 | "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n", |
876 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), |
877 | (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), |
dd2155a4 |
878 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" |
879 | )); |
880 | |
bc44cdaf |
881 | /* Can clear pad variable in place? */ |
882 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { |
8aacddc1 |
883 | /* |
884 | * if a my variable that was made readonly is going out of |
885 | * scope, we want to remove the readonlyness so that it can |
886 | * go out of scope quietly |
8aacddc1 |
887 | */ |
a26e96df |
888 | if (SvPADMY(sv) && !SvFAKE(sv)) |
8aacddc1 |
889 | SvREADONLY_off(sv); |
890 | |
6fc92669 |
891 | if (SvTHINKFIRST(sv)) |
840a7b70 |
892 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF); |
a0d0e21e |
893 | if (SvMAGICAL(sv)) |
894 | mg_free(sv); |
8990e307 |
895 | |
896 | switch (SvTYPE(sv)) { |
897 | case SVt_NULL: |
898 | break; |
899 | case SVt_PVAV: |
44a8e56a |
900 | av_clear((AV*)sv); |
8990e307 |
901 | break; |
902 | case SVt_PVHV: |
44a8e56a |
903 | hv_clear((HV*)sv); |
8990e307 |
904 | break; |
905 | case SVt_PVCV: |
cea2e8a9 |
906 | Perl_croak(aTHX_ "panic: leave_scope pad code"); |
8990e307 |
907 | default: |
0c34ef67 |
908 | SvOK_off(sv); |
8990e307 |
909 | break; |
910 | } |
d9d18af6 |
911 | SvPADSTALE_on(sv); /* mark as no longer live */ |
8990e307 |
912 | } |
913 | else { /* Someone has a claim on this, so abandon it. */ |
35a4481c |
914 | const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP); |
8990e307 |
915 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
916 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; |
917 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; |
918 | default: *(SV**)ptr = NEWSV(0,0); break; |
919 | } |
53868620 |
920 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
d9d18af6 |
921 | /* preserve pad nature, but also mark as not live |
922 | * for any closure capturing */ |
2740392c |
923 | SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE; |
8990e307 |
924 | } |
925 | break; |
926 | case SAVEt_DELETE: |
927 | ptr = SSPOPPTR; |
928 | hv = (HV*)ptr; |
929 | ptr = SSPOPPTR; |
748a9306 |
930 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
4e4c362e |
931 | SvREFCNT_dec(hv); |
8aacddc1 |
932 | Safefree(ptr); |
8990e307 |
933 | break; |
a0d0e21e |
934 | case SAVEt_DESTRUCTOR: |
935 | ptr = SSPOPPTR; |
146174a9 |
936 | (*SSPOPDPTR)(ptr); |
937 | break; |
938 | case SAVEt_DESTRUCTOR_X: |
939 | ptr = SSPOPPTR; |
acfe0abc |
940 | (*SSPOPDXPTR)(aTHX_ ptr); |
a0d0e21e |
941 | break; |
942 | case SAVEt_REGCONTEXT: |
455ece5e |
943 | case SAVEt_ALLOC: |
161b7d16 |
944 | i = SSPOPINT; |
3280af22 |
945 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e |
946 | break; |
55497cff |
947 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 |
948 | i = SSPOPINT; |
3280af22 |
949 | PL_stack_sp = PL_stack_base + i; |
55497cff |
950 | break; |
161b7d16 |
951 | case SAVEt_AELEM: /* array element */ |
952 | value = (SV*)SSPOPPTR; |
953 | i = SSPOPINT; |
954 | av = (AV*)SSPOPPTR; |
5dd42e15 |
955 | if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */ |
956 | SvREFCNT_dec(value); |
161b7d16 |
957 | ptr = av_fetch(av,i,1); |
4e4c362e |
958 | if (ptr) { |
959 | sv = *(SV**)ptr; |
3280af22 |
960 | if (sv && sv != &PL_sv_undef) { |
14befaf4 |
961 | if (SvTIED_mg((SV*)av, PERL_MAGIC_tied)) |
4e4c362e |
962 | (void)SvREFCNT_inc(sv); |
4e4c362e |
963 | goto restore_sv; |
964 | } |
965 | } |
966 | SvREFCNT_dec(av); |
967 | SvREFCNT_dec(value); |
968 | break; |
161b7d16 |
969 | case SAVEt_HELEM: /* hash element */ |
970 | value = (SV*)SSPOPPTR; |
9002cb76 |
971 | sv = (SV*)SSPOPPTR; |
161b7d16 |
972 | hv = (HV*)SSPOPPTR; |
973 | ptr = hv_fetch_ent(hv, sv, 1, 0); |
4e4c362e |
974 | if (ptr) { |
35a4481c |
975 | const SV * const oval = HeVAL((HE*)ptr); |
3280af22 |
976 | if (oval && oval != &PL_sv_undef) { |
4e4c362e |
977 | ptr = &HeVAL((HE*)ptr); |
14befaf4 |
978 | if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) |
4e4c362e |
979 | (void)SvREFCNT_inc(*(SV**)ptr); |
4e4c362e |
980 | SvREFCNT_dec(sv); |
5dd42e15 |
981 | av = (AV*)hv; /* what to refcnt_dec */ |
4e4c362e |
982 | goto restore_sv; |
983 | } |
984 | } |
985 | SvREFCNT_dec(hv); |
986 | SvREFCNT_dec(sv); |
987 | SvREFCNT_dec(value); |
988 | break; |
462e5cf6 |
989 | case SAVEt_OP: |
533c011a |
990 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 |
991 | break; |
25eaa213 |
992 | case SAVEt_HINTS: |
045ac317 |
993 | if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) { |
994 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); |
995 | GvHV(PL_hintgv) = NULL; |
996 | } |
3280af22 |
997 | *(I32*)&PL_hints = (I32)SSPOPINT; |
dfa41748 |
998 | if (PL_hints & HINT_LOCALIZE_HH) { |
999 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); |
1000 | GvHV(PL_hintgv) = (HV*)SSPOPPTR; |
1001 | } |
1002 | |
b3ac6de7 |
1003 | break; |
cb50131a |
1004 | case SAVEt_COMPPAD: |
f3548bdc |
1005 | PL_comppad = (PAD*)SSPOPPTR; |
58ed4fbe |
1006 | if (PL_comppad) |
cb50131a |
1007 | PL_curpad = AvARRAY(PL_comppad); |
1008 | else |
1009 | PL_curpad = Null(SV**); |
1010 | break; |
c3564e5c |
1011 | case SAVEt_PADSV: |
1012 | { |
35a4481c |
1013 | const PADOFFSET off = (PADOFFSET)SSPOPLONG; |
c3564e5c |
1014 | ptr = SSPOPPTR; |
1015 | if (ptr) |
f3548bdc |
1016 | AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR; |
c3564e5c |
1017 | } |
1018 | break; |
8b7059b1 |
1019 | case SAVEt_SAVESWITCHSTACK: |
1020 | { |
1021 | dSP; |
1022 | AV* t = (AV*)SSPOPPTR; |
1023 | AV* f = (AV*)SSPOPPTR; |
1024 | SWITCHSTACK(t,f); |
1025 | PL_curstackinfo->si_stack = f; |
1026 | } |
1027 | break; |
14f338dc |
1028 | case SAVEt_SET_SVFLAGS: |
1029 | { |
35a4481c |
1030 | const U32 val = (U32)SSPOPINT; |
1031 | const U32 mask = (U32)SSPOPINT; |
14f338dc |
1032 | sv = (SV*)SSPOPPTR; |
1033 | SvFLAGS(sv) &= ~mask; |
1034 | SvFLAGS(sv) |= val; |
1035 | } |
1036 | break; |
79072805 |
1037 | default: |
cea2e8a9 |
1038 | Perl_croak(aTHX_ "panic: leave_scope inconsistency"); |
79072805 |
1039 | } |
1040 | } |
1041 | } |
8990e307 |
1042 | |
8990e307 |
1043 | void |
864dbfa3 |
1044 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
8990e307 |
1045 | { |
35ff7856 |
1046 | #ifdef DEBUGGING |
22c35a8c |
1047 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 |
1048 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 |
1049 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
146174a9 |
1050 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n", |
1051 | PTR2UV(cx->blk_oldcop)); |
760ac839 |
1052 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
1053 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); |
146174a9 |
1054 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n", |
1055 | PTR2UV(cx->blk_oldpm)); |
760ac839 |
1056 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 |
1057 | } |
6b35e009 |
1058 | switch (CxTYPE(cx)) { |
8990e307 |
1059 | case CXt_NULL: |
1060 | case CXt_BLOCK: |
1061 | break; |
146174a9 |
1062 | case CXt_FORMAT: |
1063 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1064 | PTR2UV(cx->blk_sub.cv)); |
1065 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n", |
1066 | PTR2UV(cx->blk_sub.gv)); |
1067 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n", |
1068 | PTR2UV(cx->blk_sub.dfoutgv)); |
1069 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
1070 | (int)cx->blk_sub.hasargs); |
f39bc417 |
1071 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n", |
1072 | PTR2UV(cx->blk_sub.retop)); |
146174a9 |
1073 | break; |
8990e307 |
1074 | case CXt_SUB: |
146174a9 |
1075 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1076 | PTR2UV(cx->blk_sub.cv)); |
760ac839 |
1077 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 |
1078 | (long)cx->blk_sub.olddepth); |
760ac839 |
1079 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 |
1080 | (int)cx->blk_sub.hasargs); |
146174a9 |
1081 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", |
1082 | (int)cx->blk_sub.lval); |
f39bc417 |
1083 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n", |
1084 | PTR2UV(cx->blk_sub.retop)); |
8990e307 |
1085 | break; |
1086 | case CXt_EVAL: |
760ac839 |
1087 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 |
1088 | (long)cx->blk_eval.old_in_eval); |
760ac839 |
1089 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
22c35a8c |
1090 | PL_op_name[cx->blk_eval.old_op_type], |
1091 | PL_op_desc[cx->blk_eval.old_op_type]); |
0f79a09d |
1092 | if (cx->blk_eval.old_namesv) |
1093 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", |
1094 | SvPVX(cx->blk_eval.old_namesv)); |
146174a9 |
1095 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n", |
1096 | PTR2UV(cx->blk_eval.old_eval_root)); |
f39bc417 |
1097 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n", |
1098 | PTR2UV(cx->blk_eval.retop)); |
8990e307 |
1099 | break; |
1100 | |
1101 | case CXt_LOOP: |
760ac839 |
1102 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 |
1103 | cx->blk_loop.label); |
760ac839 |
1104 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 |
1105 | (long)cx->blk_loop.resetsp); |
146174a9 |
1106 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n", |
1107 | PTR2UV(cx->blk_loop.redo_op)); |
1108 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n", |
1109 | PTR2UV(cx->blk_loop.next_op)); |
1110 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n", |
1111 | PTR2UV(cx->blk_loop.last_op)); |
760ac839 |
1112 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 |
1113 | (long)cx->blk_loop.iterix); |
146174a9 |
1114 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n", |
1115 | PTR2UV(cx->blk_loop.iterary)); |
1116 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n", |
1117 | PTR2UV(CxITERVAR(cx))); |
1118 | if (CxITERVAR(cx)) |
1119 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n", |
1120 | PTR2UV(cx->blk_loop.itersave)); |
1121 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n", |
1122 | PTR2UV(cx->blk_loop.iterlval)); |
8990e307 |
1123 | break; |
1124 | |
1125 | case CXt_SUBST: |
760ac839 |
1126 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 |
1127 | (long)cx->sb_iters); |
760ac839 |
1128 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 |
1129 | (long)cx->sb_maxiters); |
35ef4773 |
1130 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
1131 | (long)cx->sb_rflags); |
760ac839 |
1132 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 |
1133 | (long)cx->sb_once); |
760ac839 |
1134 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 |
1135 | cx->sb_orig); |
146174a9 |
1136 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n", |
1137 | PTR2UV(cx->sb_dstr)); |
1138 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n", |
1139 | PTR2UV(cx->sb_targ)); |
1140 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n", |
1141 | PTR2UV(cx->sb_s)); |
1142 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n", |
1143 | PTR2UV(cx->sb_m)); |
1144 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n", |
1145 | PTR2UV(cx->sb_strend)); |
1146 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n", |
1147 | PTR2UV(cx->sb_rxres)); |
8990e307 |
1148 | break; |
1149 | } |
17c3b450 |
1150 | #endif /* DEBUGGING */ |
35ff7856 |
1151 | } |
241d1a3b |
1152 | |
1153 | /* |
1154 | * Local variables: |
1155 | * c-indentation-style: bsd |
1156 | * c-basic-offset: 4 |
1157 | * indent-tabs-mode: t |
1158 | * End: |
1159 | * |
37442d52 |
1160 | * ex: set ts=8 sts=4 sw=4 noet: |
1161 | */ |