Commit | Line | Data |
a0d0e21e |
1 | /* scope.c |
79072805 |
2 | * |
4bb101f2 |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4 | * 2000, 2001, 2002, 2003, 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 | |
16 | #include "EXTERN.h" |
864dbfa3 |
17 | #define PERL_IN_SCOPE_C |
79072805 |
18 | #include "perl.h" |
19 | |
14dd3ad8 |
20 | #if defined(PERL_FLEXIBLE_EXCEPTIONS) |
312caa8e |
21 | void * |
146174a9 |
22 | Perl_default_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt, |
23 | protect_body_t body, ...) |
312caa8e |
24 | { |
c5be433b |
25 | void *ret; |
26 | va_list args; |
27 | va_start(args, body); |
146174a9 |
28 | ret = vdefault_protect(pcur_env, excpt, body, &args); |
c5be433b |
29 | va_end(args); |
30 | return ret; |
31 | } |
32 | |
33 | void * |
146174a9 |
34 | Perl_vdefault_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt, |
35 | protect_body_t body, va_list *args) |
c5be433b |
36 | { |
312caa8e |
37 | int ex; |
38 | void *ret; |
39 | |
312caa8e |
40 | JMPENV_PUSH(ex); |
41 | if (ex) |
42 | ret = NULL; |
c5be433b |
43 | else |
44 | ret = CALL_FPTR(body)(aTHX_ *args); |
a6c40364 |
45 | *excpt = ex; |
312caa8e |
46 | JMPENV_POP; |
47 | return ret; |
48 | } |
14dd3ad8 |
49 | #endif |
312caa8e |
50 | |
a0d0e21e |
51 | SV** |
864dbfa3 |
52 | Perl_stack_grow(pTHX_ SV **sp, SV **p, int n) |
a0d0e21e |
53 | { |
3280af22 |
54 | PL_stack_sp = sp; |
2ce36478 |
55 | #ifndef STRESS_REALLOC |
3280af22 |
56 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128); |
2ce36478 |
57 | #else |
6b88bc9c |
58 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1); |
2ce36478 |
59 | #endif |
3280af22 |
60 | return PL_stack_sp; |
a0d0e21e |
61 | } |
62 | |
2ce36478 |
63 | #ifndef STRESS_REALLOC |
64 | #define GROW(old) ((old) * 3 / 2) |
65 | #else |
66 | #define GROW(old) ((old) + 1) |
67 | #endif |
68 | |
e336de0d |
69 | PERL_SI * |
864dbfa3 |
70 | Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems) |
e336de0d |
71 | { |
72 | PERL_SI *si; |
e336de0d |
73 | New(56, si, 1, PERL_SI); |
74 | si->si_stack = newAV(); |
75 | AvREAL_off(si->si_stack); |
76 | av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0); |
3280af22 |
77 | AvALLOC(si->si_stack)[0] = &PL_sv_undef; |
e336de0d |
78 | AvFILLp(si->si_stack) = 0; |
79 | si->si_prev = 0; |
80 | si->si_next = 0; |
81 | si->si_cxmax = cxitems - 1; |
82 | si->si_cxix = -1; |
e788e7d3 |
83 | si->si_type = PERLSI_UNDEF; |
9965345d |
84 | New(56, si->si_cxstack, cxitems, PERL_CONTEXT); |
85 | /* Without any kind of initialising PUSHSUBST() |
86 | * in pp_subst() will read uninitialised heap. */ |
87 | Poison(si->si_cxstack, cxitems, PERL_CONTEXT); |
e336de0d |
88 | return si; |
89 | } |
90 | |
79072805 |
91 | I32 |
864dbfa3 |
92 | Perl_cxinc(pTHX) |
79072805 |
93 | { |
4fc93207 |
94 | IV old_max = cxstack_max; |
2ce36478 |
95 | cxstack_max = GROW(cxstack_max); |
c09156bb |
96 | Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */ |
9965345d |
97 | /* Without any kind of initialising deep enough recursion |
98 | * will end up reading uninitialised PERL_CONTEXTs. */ |
99 | Poison(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT); |
79072805 |
100 | return cxstack_ix + 1; |
101 | } |
102 | |
103 | void |
864dbfa3 |
104 | Perl_push_return(pTHX_ OP *retop) |
79072805 |
105 | { |
3280af22 |
106 | if (PL_retstack_ix == PL_retstack_max) { |
107 | PL_retstack_max = GROW(PL_retstack_max); |
108 | Renew(PL_retstack, PL_retstack_max, OP*); |
79072805 |
109 | } |
3280af22 |
110 | PL_retstack[PL_retstack_ix++] = retop; |
79072805 |
111 | } |
112 | |
113 | OP * |
864dbfa3 |
114 | Perl_pop_return(pTHX) |
79072805 |
115 | { |
3280af22 |
116 | if (PL_retstack_ix > 0) |
117 | return PL_retstack[--PL_retstack_ix]; |
79072805 |
118 | else |
119 | return Nullop; |
120 | } |
121 | |
122 | void |
864dbfa3 |
123 | Perl_push_scope(pTHX) |
79072805 |
124 | { |
3280af22 |
125 | if (PL_scopestack_ix == PL_scopestack_max) { |
126 | PL_scopestack_max = GROW(PL_scopestack_max); |
127 | Renew(PL_scopestack, PL_scopestack_max, I32); |
79072805 |
128 | } |
3280af22 |
129 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 |
130 | |
131 | } |
132 | |
133 | void |
864dbfa3 |
134 | Perl_pop_scope(pTHX) |
79072805 |
135 | { |
3280af22 |
136 | I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 |
137 | LEAVE_SCOPE(oldsave); |
79072805 |
138 | } |
139 | |
140 | void |
864dbfa3 |
141 | Perl_markstack_grow(pTHX) |
a0d0e21e |
142 | { |
3280af22 |
143 | I32 oldmax = PL_markstack_max - PL_markstack; |
2ce36478 |
144 | I32 newmax = GROW(oldmax); |
a0d0e21e |
145 | |
3280af22 |
146 | Renew(PL_markstack, newmax, I32); |
147 | PL_markstack_ptr = PL_markstack + oldmax; |
148 | PL_markstack_max = PL_markstack + newmax; |
a0d0e21e |
149 | } |
150 | |
151 | void |
864dbfa3 |
152 | Perl_savestack_grow(pTHX) |
79072805 |
153 | { |
8aacddc1 |
154 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
3280af22 |
155 | Renew(PL_savestack, PL_savestack_max, ANY); |
79072805 |
156 | } |
157 | |
2ce36478 |
158 | #undef GROW |
159 | |
79072805 |
160 | void |
864dbfa3 |
161 | Perl_tmps_grow(pTHX_ I32 n) |
677b06e3 |
162 | { |
677b06e3 |
163 | #ifndef STRESS_REALLOC |
164 | if (n < 128) |
165 | n = (PL_tmps_max < 512) ? 128 : 512; |
166 | #endif |
167 | PL_tmps_max = PL_tmps_ix + n + 1; |
168 | Renew(PL_tmps_stack, PL_tmps_max, SV*); |
169 | } |
170 | |
171 | |
172 | void |
864dbfa3 |
173 | Perl_free_tmps(pTHX) |
79072805 |
174 | { |
175 | /* XXX should tmps_floor live in cxstack? */ |
3280af22 |
176 | I32 myfloor = PL_tmps_floor; |
177 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
178 | SV* sv = PL_tmps_stack[PL_tmps_ix]; |
179 | PL_tmps_stack[PL_tmps_ix--] = Nullsv; |
8aacddc1 |
180 | if (sv && sv != &PL_sv_undef) { |
463ee0b2 |
181 | SvTEMP_off(sv); |
8990e307 |
182 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 |
183 | } |
79072805 |
184 | } |
185 | } |
186 | |
76e3520e |
187 | STATIC SV * |
cea2e8a9 |
188 | S_save_scalar_at(pTHX_ SV **sptr) |
79072805 |
189 | { |
190 | register SV *sv; |
7a4c00b4 |
191 | SV *osv = *sptr; |
79072805 |
192 | |
7a4c00b4 |
193 | sv = *sptr = NEWSV(0,0); |
a0d0e21e |
194 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
79072805 |
195 | sv_upgrade(sv, SvTYPE(osv)); |
a0d0e21e |
196 | if (SvGMAGICAL(osv)) { |
748a9306 |
197 | MAGIC* mg; |
3280af22 |
198 | bool oldtainted = PL_tainted; |
5cfc7842 |
199 | mg_get(osv); /* note, can croak! */ |
14befaf4 |
200 | if (PL_tainting && PL_tainted && |
201 | (mg = mg_find(osv, PERL_MAGIC_taint))) { |
748a9306 |
202 | SAVESPTR(mg->mg_obj); |
203 | mg->mg_obj = osv; |
204 | } |
a0d0e21e |
205 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
8aacddc1 |
206 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
3280af22 |
207 | PL_tainted = oldtainted; |
a0d0e21e |
208 | } |
79072805 |
209 | SvMAGIC(sv) = SvMAGIC(osv); |
a0d0e21e |
210 | SvFLAGS(sv) |= SvMAGICAL(osv); |
2d5e9e5d |
211 | /* XXX SvMAGIC() is *shared* between osv and sv. This can |
212 | * lead to coredumps when both SVs are destroyed without one |
213 | * of their SvMAGIC() slots being NULLed. */ |
3280af22 |
214 | PL_localizing = 1; |
79072805 |
215 | SvSETMAGIC(sv); |
3280af22 |
216 | PL_localizing = 0; |
79072805 |
217 | } |
218 | return sv; |
219 | } |
220 | |
7a4c00b4 |
221 | SV * |
864dbfa3 |
222 | Perl_save_scalar(pTHX_ GV *gv) |
7a4c00b4 |
223 | { |
4e4c362e |
224 | SV **sptr = &GvSV(gv); |
7a4c00b4 |
225 | SSCHECK(3); |
4e4c362e |
226 | SSPUSHPTR(SvREFCNT_inc(gv)); |
227 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
228 | SSPUSHINT(SAVEt_SV); |
4e4c362e |
229 | return save_scalar_at(sptr); |
7a4c00b4 |
230 | } |
231 | |
232 | SV* |
864dbfa3 |
233 | Perl_save_svref(pTHX_ SV **sptr) |
7a4c00b4 |
234 | { |
235 | SSCHECK(3); |
236 | SSPUSHPTR(sptr); |
4e4c362e |
237 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
238 | SSPUSHINT(SAVEt_SVREF); |
239 | return save_scalar_at(sptr); |
240 | } |
241 | |
f4dd75d9 |
242 | /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to |
b9d12d37 |
243 | * restore a global SV to its prior contents, freeing new value. */ |
244 | void |
864dbfa3 |
245 | Perl_save_generic_svref(pTHX_ SV **sptr) |
b9d12d37 |
246 | { |
b9d12d37 |
247 | SSCHECK(3); |
248 | SSPUSHPTR(sptr); |
249 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
250 | SSPUSHINT(SAVEt_GENERIC_SVREF); |
251 | } |
252 | |
f4dd75d9 |
253 | /* Like save_pptr(), but also Safefree()s the new value if it is different |
254 | * from the old one. Can be used to restore a global char* to its prior |
255 | * contents, freeing new value. */ |
256 | void |
257 | Perl_save_generic_pvref(pTHX_ char **str) |
258 | { |
f4dd75d9 |
259 | SSCHECK(3); |
260 | SSPUSHPTR(str); |
261 | SSPUSHPTR(*str); |
262 | SSPUSHINT(SAVEt_GENERIC_PVREF); |
263 | } |
264 | |
05ec9bb3 |
265 | /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree(). |
266 | * Can be used to restore a shared global char* to its prior |
267 | * contents, freeing new value. */ |
268 | void |
269 | Perl_save_shared_pvref(pTHX_ char **str) |
270 | { |
271 | SSCHECK(3); |
272 | SSPUSHPTR(str); |
273 | SSPUSHPTR(*str); |
274 | SSPUSHINT(SAVEt_SHARED_PVREF); |
275 | } |
276 | |
79072805 |
277 | void |
864dbfa3 |
278 | Perl_save_gp(pTHX_ GV *gv, I32 empty) |
79072805 |
279 | { |
fb73857a |
280 | SSCHECK(6); |
281 | SSPUSHIV((IV)SvLEN(gv)); |
282 | SvLEN(gv) = 0; /* forget that anything was allocated here */ |
283 | SSPUSHIV((IV)SvCUR(gv)); |
284 | SSPUSHPTR(SvPVX(gv)); |
285 | SvPOK_off(gv); |
4633a7c4 |
286 | SSPUSHPTR(SvREFCNT_inc(gv)); |
5f05dabc |
287 | SSPUSHPTR(GvGP(gv)); |
79072805 |
288 | SSPUSHINT(SAVEt_GP); |
289 | |
5f05dabc |
290 | if (empty) { |
291 | register GP *gp; |
fae75791 |
292 | |
146174a9 |
293 | Newz(602, gp, 1, GP); |
294 | |
fae75791 |
295 | if (GvCVu(gv)) |
3280af22 |
296 | PL_sub_generation++; /* taking a method out of circulation */ |
146174a9 |
297 | if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) { |
298 | gp->gp_io = newIO(); |
299 | IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START; |
300 | } |
44a8e56a |
301 | GvGP(gv) = gp_ref(gp); |
5f05dabc |
302 | GvSV(gv) = NEWSV(72,0); |
146174a9 |
303 | GvLINE(gv) = CopLINE(PL_curcop); |
94051fc1 |
304 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : ""; |
5f05dabc |
305 | GvEGV(gv) = gv; |
306 | } |
307 | else { |
44a8e56a |
308 | gp_ref(GvGP(gv)); |
5f05dabc |
309 | GvINTRO_on(gv); |
310 | } |
79072805 |
311 | } |
79072805 |
312 | |
79072805 |
313 | AV * |
864dbfa3 |
314 | Perl_save_ary(pTHX_ GV *gv) |
79072805 |
315 | { |
67a38de0 |
316 | AV *oav = GvAVn(gv); |
317 | AV *av; |
fb73857a |
318 | |
67a38de0 |
319 | if (!AvREAL(oav) && AvREIFY(oav)) |
320 | av_reify(oav); |
79072805 |
321 | SSCHECK(3); |
322 | SSPUSHPTR(gv); |
67a38de0 |
323 | SSPUSHPTR(oav); |
79072805 |
324 | SSPUSHINT(SAVEt_AV); |
325 | |
326 | GvAV(gv) = Null(AV*); |
fb73857a |
327 | av = GvAVn(gv); |
328 | if (SvMAGIC(oav)) { |
329 | SvMAGIC(av) = SvMAGIC(oav); |
32da55ab |
330 | SvFLAGS((SV*)av) |= SvMAGICAL(oav); |
fb73857a |
331 | SvMAGICAL_off(oav); |
332 | SvMAGIC(oav) = 0; |
3280af22 |
333 | PL_localizing = 1; |
fb73857a |
334 | SvSETMAGIC((SV*)av); |
3280af22 |
335 | PL_localizing = 0; |
fb73857a |
336 | } |
337 | return av; |
79072805 |
338 | } |
339 | |
340 | HV * |
864dbfa3 |
341 | Perl_save_hash(pTHX_ GV *gv) |
79072805 |
342 | { |
fb73857a |
343 | HV *ohv, *hv; |
344 | |
79072805 |
345 | SSCHECK(3); |
346 | SSPUSHPTR(gv); |
fb73857a |
347 | SSPUSHPTR(ohv = GvHVn(gv)); |
79072805 |
348 | SSPUSHINT(SAVEt_HV); |
349 | |
350 | GvHV(gv) = Null(HV*); |
fb73857a |
351 | hv = GvHVn(gv); |
352 | if (SvMAGIC(ohv)) { |
353 | SvMAGIC(hv) = SvMAGIC(ohv); |
32da55ab |
354 | SvFLAGS((SV*)hv) |= SvMAGICAL(ohv); |
fb73857a |
355 | SvMAGICAL_off(ohv); |
356 | SvMAGIC(ohv) = 0; |
3280af22 |
357 | PL_localizing = 1; |
fb73857a |
358 | SvSETMAGIC((SV*)hv); |
3280af22 |
359 | PL_localizing = 0; |
fb73857a |
360 | } |
361 | return hv; |
79072805 |
362 | } |
363 | |
364 | void |
864dbfa3 |
365 | Perl_save_item(pTHX_ register SV *item) |
79072805 |
366 | { |
f46d017c |
367 | register SV *sv = NEWSV(0,0); |
79072805 |
368 | |
f46d017c |
369 | sv_setsv(sv,item); |
79072805 |
370 | SSCHECK(3); |
371 | SSPUSHPTR(item); /* remember the pointer */ |
79072805 |
372 | SSPUSHPTR(sv); /* remember the value */ |
373 | SSPUSHINT(SAVEt_ITEM); |
374 | } |
375 | |
376 | void |
864dbfa3 |
377 | Perl_save_int(pTHX_ int *intp) |
79072805 |
378 | { |
379 | SSCHECK(3); |
380 | SSPUSHINT(*intp); |
381 | SSPUSHPTR(intp); |
382 | SSPUSHINT(SAVEt_INT); |
383 | } |
384 | |
385 | void |
864dbfa3 |
386 | Perl_save_long(pTHX_ long int *longp) |
85e6fe83 |
387 | { |
388 | SSCHECK(3); |
389 | SSPUSHLONG(*longp); |
390 | SSPUSHPTR(longp); |
391 | SSPUSHINT(SAVEt_LONG); |
392 | } |
393 | |
394 | void |
9febdf04 |
395 | Perl_save_bool(pTHX_ bool *boolp) |
396 | { |
397 | SSCHECK(3); |
398 | SSPUSHBOOL(*boolp); |
399 | SSPUSHPTR(boolp); |
400 | SSPUSHINT(SAVEt_BOOL); |
401 | } |
402 | |
403 | void |
864dbfa3 |
404 | Perl_save_I32(pTHX_ I32 *intp) |
79072805 |
405 | { |
406 | SSCHECK(3); |
407 | SSPUSHINT(*intp); |
408 | SSPUSHPTR(intp); |
409 | SSPUSHINT(SAVEt_I32); |
410 | } |
411 | |
a0d0e21e |
412 | void |
864dbfa3 |
413 | Perl_save_I16(pTHX_ I16 *intp) |
55497cff |
414 | { |
415 | SSCHECK(3); |
416 | SSPUSHINT(*intp); |
417 | SSPUSHPTR(intp); |
418 | SSPUSHINT(SAVEt_I16); |
419 | } |
420 | |
421 | void |
146174a9 |
422 | Perl_save_I8(pTHX_ I8 *bytep) |
423 | { |
146174a9 |
424 | SSCHECK(3); |
425 | SSPUSHINT(*bytep); |
426 | SSPUSHPTR(bytep); |
427 | SSPUSHINT(SAVEt_I8); |
428 | } |
429 | |
430 | void |
864dbfa3 |
431 | Perl_save_iv(pTHX_ IV *ivp) |
a0d0e21e |
432 | { |
433 | SSCHECK(3); |
4aa0a1f7 |
434 | SSPUSHIV(*ivp); |
a0d0e21e |
435 | SSPUSHPTR(ivp); |
436 | SSPUSHINT(SAVEt_IV); |
437 | } |
438 | |
85e6fe83 |
439 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
440 | * force word-alignment and we'll miss the pointer. |
441 | */ |
442 | void |
864dbfa3 |
443 | Perl_save_pptr(pTHX_ char **pptr) |
85e6fe83 |
444 | { |
445 | SSCHECK(3); |
446 | SSPUSHPTR(*pptr); |
447 | SSPUSHPTR(pptr); |
448 | SSPUSHINT(SAVEt_PPTR); |
449 | } |
450 | |
79072805 |
451 | void |
146174a9 |
452 | Perl_save_vptr(pTHX_ void *ptr) |
453 | { |
146174a9 |
454 | SSCHECK(3); |
455 | SSPUSHPTR(*(char**)ptr); |
456 | SSPUSHPTR(ptr); |
457 | SSPUSHINT(SAVEt_VPTR); |
458 | } |
459 | |
460 | void |
864dbfa3 |
461 | Perl_save_sptr(pTHX_ SV **sptr) |
79072805 |
462 | { |
463 | SSCHECK(3); |
464 | SSPUSHPTR(*sptr); |
465 | SSPUSHPTR(sptr); |
466 | SSPUSHINT(SAVEt_SPTR); |
467 | } |
468 | |
c3564e5c |
469 | void |
470 | Perl_save_padsv(pTHX_ PADOFFSET off) |
471 | { |
c3564e5c |
472 | SSCHECK(4); |
f3548bdc |
473 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
c3564e5c |
474 | SSPUSHPTR(PL_curpad[off]); |
f3548bdc |
475 | SSPUSHPTR(PL_comppad); |
c3564e5c |
476 | SSPUSHLONG((long)off); |
477 | SSPUSHINT(SAVEt_PADSV); |
478 | } |
479 | |
54b9620d |
480 | SV ** |
864dbfa3 |
481 | Perl_save_threadsv(pTHX_ PADOFFSET i) |
54b9620d |
482 | { |
cea2e8a9 |
483 | Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl"); |
54b9620d |
484 | return 0; |
54b9620d |
485 | } |
486 | |
79072805 |
487 | void |
864dbfa3 |
488 | Perl_save_nogv(pTHX_ GV *gv) |
79072805 |
489 | { |
490 | SSCHECK(2); |
491 | SSPUSHPTR(gv); |
492 | SSPUSHINT(SAVEt_NSTAB); |
493 | } |
494 | |
495 | void |
864dbfa3 |
496 | Perl_save_hptr(pTHX_ HV **hptr) |
79072805 |
497 | { |
498 | SSCHECK(3); |
85e6fe83 |
499 | SSPUSHPTR(*hptr); |
79072805 |
500 | SSPUSHPTR(hptr); |
501 | SSPUSHINT(SAVEt_HPTR); |
502 | } |
503 | |
504 | void |
864dbfa3 |
505 | Perl_save_aptr(pTHX_ AV **aptr) |
79072805 |
506 | { |
507 | SSCHECK(3); |
85e6fe83 |
508 | SSPUSHPTR(*aptr); |
79072805 |
509 | SSPUSHPTR(aptr); |
510 | SSPUSHINT(SAVEt_APTR); |
511 | } |
512 | |
513 | void |
864dbfa3 |
514 | Perl_save_freesv(pTHX_ SV *sv) |
8990e307 |
515 | { |
516 | SSCHECK(2); |
517 | SSPUSHPTR(sv); |
518 | SSPUSHINT(SAVEt_FREESV); |
519 | } |
520 | |
521 | void |
26d9b02f |
522 | Perl_save_mortalizesv(pTHX_ SV *sv) |
523 | { |
524 | SSCHECK(2); |
525 | SSPUSHPTR(sv); |
526 | SSPUSHINT(SAVEt_MORTALIZESV); |
527 | } |
528 | |
529 | void |
864dbfa3 |
530 | Perl_save_freeop(pTHX_ OP *o) |
8990e307 |
531 | { |
532 | SSCHECK(2); |
11343788 |
533 | SSPUSHPTR(o); |
8990e307 |
534 | SSPUSHINT(SAVEt_FREEOP); |
535 | } |
536 | |
537 | void |
864dbfa3 |
538 | Perl_save_freepv(pTHX_ char *pv) |
8990e307 |
539 | { |
540 | SSCHECK(2); |
541 | SSPUSHPTR(pv); |
542 | SSPUSHINT(SAVEt_FREEPV); |
543 | } |
544 | |
545 | void |
864dbfa3 |
546 | Perl_save_clearsv(pTHX_ SV **svp) |
8990e307 |
547 | { |
f3548bdc |
548 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
8990e307 |
549 | SSCHECK(2); |
3280af22 |
550 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 |
551 | SSPUSHINT(SAVEt_CLEARSV); |
d9d18af6 |
552 | SvPADSTALE_off(*svp); /* mark lexical as active */ |
8990e307 |
553 | } |
554 | |
555 | void |
864dbfa3 |
556 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
8990e307 |
557 | { |
558 | SSCHECK(4); |
559 | SSPUSHINT(klen); |
560 | SSPUSHPTR(key); |
4e4c362e |
561 | SSPUSHPTR(SvREFCNT_inc(hv)); |
8990e307 |
562 | SSPUSHINT(SAVEt_DELETE); |
563 | } |
564 | |
565 | void |
864dbfa3 |
566 | Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg) |
79072805 |
567 | { |
568 | register SV *sv; |
569 | register I32 i; |
570 | |
79072805 |
571 | for (i = 1; i <= maxsarg; i++) { |
79072805 |
572 | sv = NEWSV(0,0); |
573 | sv_setsv(sv,sarg[i]); |
f46d017c |
574 | SSCHECK(3); |
575 | SSPUSHPTR(sarg[i]); /* remember the pointer */ |
79072805 |
576 | SSPUSHPTR(sv); /* remember the value */ |
577 | SSPUSHINT(SAVEt_ITEM); |
578 | } |
579 | } |
580 | |
581 | void |
146174a9 |
582 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
a0d0e21e |
583 | { |
584 | SSCHECK(3); |
585 | SSPUSHDPTR(f); |
586 | SSPUSHPTR(p); |
587 | SSPUSHINT(SAVEt_DESTRUCTOR); |
588 | } |
589 | |
590 | void |
146174a9 |
591 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
592 | { |
146174a9 |
593 | SSCHECK(3); |
594 | SSPUSHDXPTR(f); |
595 | SSPUSHPTR(p); |
596 | SSPUSHINT(SAVEt_DESTRUCTOR_X); |
597 | } |
598 | |
599 | void |
864dbfa3 |
600 | Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr) |
4e4c362e |
601 | { |
bfc4de9f |
602 | SV *sv; |
4e4c362e |
603 | SSCHECK(4); |
604 | SSPUSHPTR(SvREFCNT_inc(av)); |
605 | SSPUSHINT(idx); |
606 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
607 | SSPUSHINT(SAVEt_AELEM); |
51d9a56b |
608 | /* if it gets reified later, the restore will have the wrong refcnt */ |
609 | if (!AvREAL(av) && AvREIFY(av)) |
610 | SvREFCNT_inc(*sptr); |
4e4c362e |
611 | save_scalar_at(sptr); |
bfc4de9f |
612 | sv = *sptr; |
613 | /* If we're localizing a tied array element, this new sv |
614 | * won't actually be stored in the array - so it won't get |
615 | * reaped when the localize ends. Ensure it gets reaped by |
616 | * mortifying it instead. DAPM */ |
617 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) |
618 | sv_2mortal(sv); |
4e4c362e |
619 | } |
620 | |
621 | void |
864dbfa3 |
622 | Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr) |
4e4c362e |
623 | { |
bfc4de9f |
624 | SV *sv; |
4e4c362e |
625 | SSCHECK(4); |
626 | SSPUSHPTR(SvREFCNT_inc(hv)); |
627 | SSPUSHPTR(SvREFCNT_inc(key)); |
628 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
629 | SSPUSHINT(SAVEt_HELEM); |
630 | save_scalar_at(sptr); |
bfc4de9f |
631 | sv = *sptr; |
632 | /* If we're localizing a tied hash element, this new sv |
633 | * won't actually be stored in the hash - so it won't get |
634 | * reaped when the localize ends. Ensure it gets reaped by |
635 | * mortifying it instead. DAPM */ |
636 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) |
637 | sv_2mortal(sv); |
4e4c362e |
638 | } |
639 | |
640 | void |
864dbfa3 |
641 | Perl_save_op(pTHX) |
462e5cf6 |
642 | { |
462e5cf6 |
643 | SSCHECK(2); |
533c011a |
644 | SSPUSHPTR(PL_op); |
462e5cf6 |
645 | SSPUSHINT(SAVEt_OP); |
646 | } |
647 | |
455ece5e |
648 | I32 |
864dbfa3 |
649 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
455ece5e |
650 | { |
455ece5e |
651 | register I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
8aacddc1 |
652 | - (char*)PL_savestack); |
455ece5e |
653 | register I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
654 | |
655 | /* SSCHECK may not be good enough */ |
656 | while (PL_savestack_ix + elems + 2 > PL_savestack_max) |
8aacddc1 |
657 | savestack_grow(); |
455ece5e |
658 | |
659 | PL_savestack_ix += elems; |
660 | SSPUSHINT(elems); |
661 | SSPUSHINT(SAVEt_ALLOC); |
662 | return start; |
663 | } |
664 | |
462e5cf6 |
665 | void |
864dbfa3 |
666 | Perl_leave_scope(pTHX_ I32 base) |
79072805 |
667 | { |
668 | register SV *sv; |
669 | register SV *value; |
670 | register GV *gv; |
671 | register AV *av; |
672 | register HV *hv; |
673 | register void* ptr; |
f4dd75d9 |
674 | register char* str; |
161b7d16 |
675 | I32 i; |
79072805 |
676 | |
677 | if (base < -1) |
cea2e8a9 |
678 | Perl_croak(aTHX_ "panic: corrupt saved stack index"); |
3280af22 |
679 | while (PL_savestack_ix > base) { |
79072805 |
680 | switch (SSPOPINT) { |
681 | case SAVEt_ITEM: /* normal string */ |
682 | value = (SV*)SSPOPPTR; |
683 | sv = (SV*)SSPOPPTR; |
684 | sv_replace(sv,value); |
3280af22 |
685 | PL_localizing = 2; |
79072805 |
686 | SvSETMAGIC(sv); |
3280af22 |
687 | PL_localizing = 0; |
79072805 |
688 | break; |
8aacddc1 |
689 | case SAVEt_SV: /* scalar reference */ |
79072805 |
690 | value = (SV*)SSPOPPTR; |
691 | gv = (GV*)SSPOPPTR; |
7a4c00b4 |
692 | ptr = &GvSV(gv); |
51d9a56b |
693 | av = (AV*)gv; /* what to refcnt_dec */ |
7a4c00b4 |
694 | goto restore_sv; |
8aacddc1 |
695 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
f4dd75d9 |
696 | str = (char*)SSPOPPTR; |
697 | ptr = SSPOPPTR; |
698 | if (*(char**)ptr != str) { |
699 | Safefree(*(char**)ptr); |
700 | *(char**)ptr = str; |
701 | } |
702 | break; |
05ec9bb3 |
703 | case SAVEt_SHARED_PVREF: /* shared pv */ |
704 | str = (char*)SSPOPPTR; |
705 | ptr = SSPOPPTR; |
706 | if (*(char**)ptr != str) { |
5e54c26f |
707 | #ifdef NETWARE |
9ecbcc42 |
708 | PerlMem_free(*(char**)ptr); |
5e54c26f |
709 | #else |
05ec9bb3 |
710 | PerlMemShared_free(*(char**)ptr); |
5e54c26f |
711 | #endif |
05ec9bb3 |
712 | *(char**)ptr = str; |
713 | } |
714 | break; |
8aacddc1 |
715 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
b9d12d37 |
716 | value = (SV*)SSPOPPTR; |
717 | ptr = SSPOPPTR; |
f4dd75d9 |
718 | sv = *(SV**)ptr; |
719 | *(SV**)ptr = value; |
720 | SvREFCNT_dec(sv); |
b9d12d37 |
721 | SvREFCNT_dec(value); |
722 | break; |
8aacddc1 |
723 | case SAVEt_SVREF: /* scalar reference */ |
7a4c00b4 |
724 | value = (SV*)SSPOPPTR; |
79072805 |
725 | ptr = SSPOPPTR; |
51d9a56b |
726 | av = Nullav; /* what to refcnt_dec */ |
7a4c00b4 |
727 | restore_sv: |
79072805 |
728 | sv = *(SV**)ptr; |
146174a9 |
729 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
54b9620d |
730 | "restore svref: %p %p:%s -> %p:%s\n", |
8aacddc1 |
731 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
cdec4f49 |
732 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
733 | SvTYPE(sv) != SVt_PVGV) |
734 | { |
a0d0e21e |
735 | (void)SvUPGRADE(value, SvTYPE(sv)); |
736 | SvMAGIC(value) = SvMAGIC(sv); |
737 | SvFLAGS(value) |= SvMAGICAL(sv); |
738 | SvMAGICAL_off(sv); |
79072805 |
739 | SvMAGIC(sv) = 0; |
a0d0e21e |
740 | } |
2d5e9e5d |
741 | /* XXX This branch is pretty bogus. This code irretrievably |
742 | * clears(!) the magic on the SV (either to avoid further |
743 | * croaking that might ensue when the SvSETMAGIC() below is |
744 | * called, or to avoid two different SVs pointing at the same |
745 | * SvMAGIC()). This needs a total rethink. --GSAR */ |
cdec4f49 |
746 | else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) && |
747 | SvTYPE(value) != SVt_PVGV) |
748 | { |
7a4c00b4 |
749 | SvFLAGS(value) |= (SvFLAGS(value) & |
8aacddc1 |
750 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
7a4c00b4 |
751 | SvMAGICAL_off(value); |
2d5e9e5d |
752 | /* XXX this is a leak when we get here because the |
753 | * mg_get() in save_scalar_at() croaked */ |
754 | SvMAGIC(value) = 0; |
7a4c00b4 |
755 | } |
8aacddc1 |
756 | SvREFCNT_dec(sv); |
a0d0e21e |
757 | *(SV**)ptr = value; |
3280af22 |
758 | PL_localizing = 2; |
a0d0e21e |
759 | SvSETMAGIC(value); |
3280af22 |
760 | PL_localizing = 0; |
4e4c362e |
761 | SvREFCNT_dec(value); |
51d9a56b |
762 | if (av) /* actually an av, hv or gv */ |
763 | SvREFCNT_dec(av); |
8aacddc1 |
764 | break; |
765 | case SAVEt_AV: /* array reference */ |
79072805 |
766 | av = (AV*)SSPOPPTR; |
767 | gv = (GV*)SSPOPPTR; |
fb73857a |
768 | if (GvAV(gv)) { |
769 | AV *goner = GvAV(gv); |
770 | SvMAGIC(av) = SvMAGIC(goner); |
32da55ab |
771 | SvFLAGS((SV*)av) |= SvMAGICAL(goner); |
fb73857a |
772 | SvMAGICAL_off(goner); |
773 | SvMAGIC(goner) = 0; |
774 | SvREFCNT_dec(goner); |
775 | } |
8aacddc1 |
776 | GvAV(gv) = av; |
fb73857a |
777 | if (SvMAGICAL(av)) { |
3280af22 |
778 | PL_localizing = 2; |
fb73857a |
779 | SvSETMAGIC((SV*)av); |
3280af22 |
780 | PL_localizing = 0; |
fb73857a |
781 | } |
8aacddc1 |
782 | break; |
783 | case SAVEt_HV: /* hash reference */ |
79072805 |
784 | hv = (HV*)SSPOPPTR; |
785 | gv = (GV*)SSPOPPTR; |
fb73857a |
786 | if (GvHV(gv)) { |
787 | HV *goner = GvHV(gv); |
788 | SvMAGIC(hv) = SvMAGIC(goner); |
789 | SvFLAGS(hv) |= SvMAGICAL(goner); |
790 | SvMAGICAL_off(goner); |
791 | SvMAGIC(goner) = 0; |
792 | SvREFCNT_dec(goner); |
793 | } |
8aacddc1 |
794 | GvHV(gv) = hv; |
fb73857a |
795 | if (SvMAGICAL(hv)) { |
3280af22 |
796 | PL_localizing = 2; |
fb73857a |
797 | SvSETMAGIC((SV*)hv); |
3280af22 |
798 | PL_localizing = 0; |
fb73857a |
799 | } |
8aacddc1 |
800 | break; |
79072805 |
801 | case SAVEt_INT: /* int reference */ |
802 | ptr = SSPOPPTR; |
803 | *(int*)ptr = (int)SSPOPINT; |
804 | break; |
85e6fe83 |
805 | case SAVEt_LONG: /* long reference */ |
806 | ptr = SSPOPPTR; |
807 | *(long*)ptr = (long)SSPOPLONG; |
808 | break; |
9febdf04 |
809 | case SAVEt_BOOL: /* bool reference */ |
810 | ptr = SSPOPPTR; |
811 | *(bool*)ptr = (bool)SSPOPBOOL; |
812 | break; |
79072805 |
813 | case SAVEt_I32: /* I32 reference */ |
814 | ptr = SSPOPPTR; |
815 | *(I32*)ptr = (I32)SSPOPINT; |
816 | break; |
55497cff |
817 | case SAVEt_I16: /* I16 reference */ |
818 | ptr = SSPOPPTR; |
819 | *(I16*)ptr = (I16)SSPOPINT; |
820 | break; |
146174a9 |
821 | case SAVEt_I8: /* I8 reference */ |
822 | ptr = SSPOPPTR; |
823 | *(I8*)ptr = (I8)SSPOPINT; |
824 | break; |
a0d0e21e |
825 | case SAVEt_IV: /* IV reference */ |
826 | ptr = SSPOPPTR; |
827 | *(IV*)ptr = (IV)SSPOPIV; |
828 | break; |
79072805 |
829 | case SAVEt_SPTR: /* SV* reference */ |
830 | ptr = SSPOPPTR; |
831 | *(SV**)ptr = (SV*)SSPOPPTR; |
832 | break; |
146174a9 |
833 | case SAVEt_VPTR: /* random* reference */ |
85e6fe83 |
834 | case SAVEt_PPTR: /* char* reference */ |
835 | ptr = SSPOPPTR; |
836 | *(char**)ptr = (char*)SSPOPPTR; |
837 | break; |
79072805 |
838 | case SAVEt_HPTR: /* HV* reference */ |
839 | ptr = SSPOPPTR; |
840 | *(HV**)ptr = (HV*)SSPOPPTR; |
841 | break; |
842 | case SAVEt_APTR: /* AV* reference */ |
843 | ptr = SSPOPPTR; |
844 | *(AV**)ptr = (AV*)SSPOPPTR; |
845 | break; |
846 | case SAVEt_NSTAB: |
847 | gv = (GV*)SSPOPPTR; |
1f96a9ed |
848 | (void)sv_clear((SV*)gv); |
79072805 |
849 | break; |
fb73857a |
850 | case SAVEt_GP: /* scalar reference */ |
79072805 |
851 | ptr = SSPOPPTR; |
852 | gv = (GV*)SSPOPPTR; |
8aacddc1 |
853 | if (SvPVX(gv) && SvLEN(gv) > 0) { |
854 | Safefree(SvPVX(gv)); |
855 | } |
856 | SvPVX(gv) = (char *)SSPOPPTR; |
857 | SvCUR(gv) = (STRLEN)SSPOPIV; |
858 | SvLEN(gv) = (STRLEN)SSPOPIV; |
859 | gp_free(gv); |
860 | GvGP(gv) = (GP*)ptr; |
fae75791 |
861 | if (GvCVu(gv)) |
3280af22 |
862 | PL_sub_generation++; /* putting a method back into circulation */ |
4633a7c4 |
863 | SvREFCNT_dec(gv); |
8aacddc1 |
864 | break; |
8990e307 |
865 | case SAVEt_FREESV: |
866 | ptr = SSPOPPTR; |
867 | SvREFCNT_dec((SV*)ptr); |
868 | break; |
26d9b02f |
869 | case SAVEt_MORTALIZESV: |
870 | ptr = SSPOPPTR; |
871 | sv_2mortal((SV*)ptr); |
872 | break; |
8990e307 |
873 | case SAVEt_FREEOP: |
874 | ptr = SSPOPPTR; |
f3548bdc |
875 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */ |
8990e307 |
876 | op_free((OP*)ptr); |
877 | break; |
878 | case SAVEt_FREEPV: |
879 | ptr = SSPOPPTR; |
880 | Safefree((char*)ptr); |
881 | break; |
882 | case SAVEt_CLEARSV: |
3280af22 |
883 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 |
884 | sv = *(SV**)ptr; |
dd2155a4 |
885 | |
886 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, |
f3548bdc |
887 | "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n", |
888 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), |
889 | (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), |
dd2155a4 |
890 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" |
891 | )); |
892 | |
bc44cdaf |
893 | /* Can clear pad variable in place? */ |
894 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { |
8aacddc1 |
895 | /* |
896 | * if a my variable that was made readonly is going out of |
897 | * scope, we want to remove the readonlyness so that it can |
898 | * go out of scope quietly |
8aacddc1 |
899 | */ |
a26e96df |
900 | if (SvPADMY(sv) && !SvFAKE(sv)) |
8aacddc1 |
901 | SvREADONLY_off(sv); |
902 | |
6fc92669 |
903 | if (SvTHINKFIRST(sv)) |
840a7b70 |
904 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF); |
a0d0e21e |
905 | if (SvMAGICAL(sv)) |
906 | mg_free(sv); |
8990e307 |
907 | |
908 | switch (SvTYPE(sv)) { |
909 | case SVt_NULL: |
910 | break; |
911 | case SVt_PVAV: |
44a8e56a |
912 | av_clear((AV*)sv); |
8990e307 |
913 | break; |
914 | case SVt_PVHV: |
44a8e56a |
915 | hv_clear((HV*)sv); |
8990e307 |
916 | break; |
917 | case SVt_PVCV: |
cea2e8a9 |
918 | Perl_croak(aTHX_ "panic: leave_scope pad code"); |
5377b701 |
919 | case SVt_RV: |
920 | case SVt_IV: |
921 | case SVt_NV: |
922 | (void)SvOK_off(sv); |
8990e307 |
923 | break; |
924 | default: |
a0d0e21e |
925 | (void)SvOK_off(sv); |
5377b701 |
926 | (void)SvOOK_off(sv); |
8990e307 |
927 | break; |
928 | } |
d9d18af6 |
929 | SvPADSTALE_on(sv); /* mark as no longer live */ |
8990e307 |
930 | } |
931 | else { /* Someone has a claim on this, so abandon it. */ |
235cc2e3 |
932 | U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP); |
8990e307 |
933 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
934 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; |
935 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; |
936 | default: *(SV**)ptr = NEWSV(0,0); break; |
937 | } |
53868620 |
938 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
d9d18af6 |
939 | /* preserve pad nature, but also mark as not live |
940 | * for any closure capturing */ |
941 | SvFLAGS(*(SV**)ptr) |= padflags & SVs_PADSTALE; |
8990e307 |
942 | } |
943 | break; |
944 | case SAVEt_DELETE: |
945 | ptr = SSPOPPTR; |
946 | hv = (HV*)ptr; |
947 | ptr = SSPOPPTR; |
748a9306 |
948 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
4e4c362e |
949 | SvREFCNT_dec(hv); |
8aacddc1 |
950 | Safefree(ptr); |
8990e307 |
951 | break; |
a0d0e21e |
952 | case SAVEt_DESTRUCTOR: |
953 | ptr = SSPOPPTR; |
146174a9 |
954 | (*SSPOPDPTR)(ptr); |
955 | break; |
956 | case SAVEt_DESTRUCTOR_X: |
957 | ptr = SSPOPPTR; |
acfe0abc |
958 | (*SSPOPDXPTR)(aTHX_ ptr); |
a0d0e21e |
959 | break; |
960 | case SAVEt_REGCONTEXT: |
455ece5e |
961 | case SAVEt_ALLOC: |
161b7d16 |
962 | i = SSPOPINT; |
3280af22 |
963 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e |
964 | break; |
55497cff |
965 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 |
966 | i = SSPOPINT; |
3280af22 |
967 | PL_stack_sp = PL_stack_base + i; |
55497cff |
968 | break; |
161b7d16 |
969 | case SAVEt_AELEM: /* array element */ |
970 | value = (SV*)SSPOPPTR; |
971 | i = SSPOPINT; |
972 | av = (AV*)SSPOPPTR; |
51d9a56b |
973 | if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */ |
974 | SvREFCNT_dec(value); |
161b7d16 |
975 | ptr = av_fetch(av,i,1); |
4e4c362e |
976 | if (ptr) { |
977 | sv = *(SV**)ptr; |
3280af22 |
978 | if (sv && sv != &PL_sv_undef) { |
14befaf4 |
979 | if (SvTIED_mg((SV*)av, PERL_MAGIC_tied)) |
4e4c362e |
980 | (void)SvREFCNT_inc(sv); |
4e4c362e |
981 | goto restore_sv; |
982 | } |
983 | } |
984 | SvREFCNT_dec(av); |
985 | SvREFCNT_dec(value); |
986 | break; |
161b7d16 |
987 | case SAVEt_HELEM: /* hash element */ |
988 | value = (SV*)SSPOPPTR; |
9002cb76 |
989 | sv = (SV*)SSPOPPTR; |
161b7d16 |
990 | hv = (HV*)SSPOPPTR; |
991 | ptr = hv_fetch_ent(hv, sv, 1, 0); |
4e4c362e |
992 | if (ptr) { |
993 | SV *oval = HeVAL((HE*)ptr); |
3280af22 |
994 | if (oval && oval != &PL_sv_undef) { |
4e4c362e |
995 | ptr = &HeVAL((HE*)ptr); |
14befaf4 |
996 | if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) |
4e4c362e |
997 | (void)SvREFCNT_inc(*(SV**)ptr); |
4e4c362e |
998 | SvREFCNT_dec(sv); |
51d9a56b |
999 | av = (AV*)hv; /* what to refcnt_dec */ |
4e4c362e |
1000 | goto restore_sv; |
1001 | } |
1002 | } |
1003 | SvREFCNT_dec(hv); |
1004 | SvREFCNT_dec(sv); |
1005 | SvREFCNT_dec(value); |
1006 | break; |
462e5cf6 |
1007 | case SAVEt_OP: |
533c011a |
1008 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 |
1009 | break; |
25eaa213 |
1010 | case SAVEt_HINTS: |
045ac317 |
1011 | if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) { |
1012 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); |
1013 | GvHV(PL_hintgv) = NULL; |
1014 | } |
3280af22 |
1015 | *(I32*)&PL_hints = (I32)SSPOPINT; |
b3ac6de7 |
1016 | break; |
cb50131a |
1017 | case SAVEt_COMPPAD: |
f3548bdc |
1018 | PL_comppad = (PAD*)SSPOPPTR; |
cb50131a |
1019 | if (PL_comppad) |
1020 | PL_curpad = AvARRAY(PL_comppad); |
1021 | else |
1022 | PL_curpad = Null(SV**); |
1023 | break; |
c3564e5c |
1024 | case SAVEt_PADSV: |
1025 | { |
1026 | PADOFFSET off = (PADOFFSET)SSPOPLONG; |
1027 | ptr = SSPOPPTR; |
1028 | if (ptr) |
f3548bdc |
1029 | AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR; |
c3564e5c |
1030 | } |
1031 | break; |
79072805 |
1032 | default: |
cea2e8a9 |
1033 | Perl_croak(aTHX_ "panic: leave_scope inconsistency"); |
79072805 |
1034 | } |
1035 | } |
1036 | } |
8990e307 |
1037 | |
8990e307 |
1038 | void |
864dbfa3 |
1039 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
8990e307 |
1040 | { |
35ff7856 |
1041 | #ifdef DEBUGGING |
22c35a8c |
1042 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 |
1043 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 |
1044 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
146174a9 |
1045 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n", |
1046 | PTR2UV(cx->blk_oldcop)); |
760ac839 |
1047 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
1048 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); |
1049 | PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp); |
146174a9 |
1050 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n", |
1051 | PTR2UV(cx->blk_oldpm)); |
760ac839 |
1052 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 |
1053 | } |
6b35e009 |
1054 | switch (CxTYPE(cx)) { |
8990e307 |
1055 | case CXt_NULL: |
1056 | case CXt_BLOCK: |
1057 | break; |
146174a9 |
1058 | case CXt_FORMAT: |
1059 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1060 | PTR2UV(cx->blk_sub.cv)); |
1061 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n", |
1062 | PTR2UV(cx->blk_sub.gv)); |
1063 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n", |
1064 | PTR2UV(cx->blk_sub.dfoutgv)); |
1065 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
1066 | (int)cx->blk_sub.hasargs); |
1067 | break; |
8990e307 |
1068 | case CXt_SUB: |
146174a9 |
1069 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1070 | PTR2UV(cx->blk_sub.cv)); |
760ac839 |
1071 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 |
1072 | (long)cx->blk_sub.olddepth); |
760ac839 |
1073 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 |
1074 | (int)cx->blk_sub.hasargs); |
146174a9 |
1075 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", |
1076 | (int)cx->blk_sub.lval); |
8990e307 |
1077 | break; |
1078 | case CXt_EVAL: |
760ac839 |
1079 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 |
1080 | (long)cx->blk_eval.old_in_eval); |
760ac839 |
1081 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
22c35a8c |
1082 | PL_op_name[cx->blk_eval.old_op_type], |
1083 | PL_op_desc[cx->blk_eval.old_op_type]); |
0f79a09d |
1084 | if (cx->blk_eval.old_namesv) |
1085 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", |
1086 | SvPVX(cx->blk_eval.old_namesv)); |
146174a9 |
1087 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n", |
1088 | PTR2UV(cx->blk_eval.old_eval_root)); |
8990e307 |
1089 | break; |
1090 | |
1091 | case CXt_LOOP: |
760ac839 |
1092 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 |
1093 | cx->blk_loop.label); |
760ac839 |
1094 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 |
1095 | (long)cx->blk_loop.resetsp); |
146174a9 |
1096 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n", |
1097 | PTR2UV(cx->blk_loop.redo_op)); |
1098 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n", |
1099 | PTR2UV(cx->blk_loop.next_op)); |
1100 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n", |
1101 | PTR2UV(cx->blk_loop.last_op)); |
760ac839 |
1102 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 |
1103 | (long)cx->blk_loop.iterix); |
146174a9 |
1104 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n", |
1105 | PTR2UV(cx->blk_loop.iterary)); |
1106 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n", |
1107 | PTR2UV(CxITERVAR(cx))); |
1108 | if (CxITERVAR(cx)) |
1109 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n", |
1110 | PTR2UV(cx->blk_loop.itersave)); |
1111 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n", |
1112 | PTR2UV(cx->blk_loop.iterlval)); |
8990e307 |
1113 | break; |
1114 | |
1115 | case CXt_SUBST: |
760ac839 |
1116 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 |
1117 | (long)cx->sb_iters); |
760ac839 |
1118 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 |
1119 | (long)cx->sb_maxiters); |
35ef4773 |
1120 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
1121 | (long)cx->sb_rflags); |
760ac839 |
1122 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 |
1123 | (long)cx->sb_once); |
760ac839 |
1124 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 |
1125 | cx->sb_orig); |
146174a9 |
1126 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n", |
1127 | PTR2UV(cx->sb_dstr)); |
1128 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n", |
1129 | PTR2UV(cx->sb_targ)); |
1130 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n", |
1131 | PTR2UV(cx->sb_s)); |
1132 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n", |
1133 | PTR2UV(cx->sb_m)); |
1134 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n", |
1135 | PTR2UV(cx->sb_strend)); |
1136 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n", |
1137 | PTR2UV(cx->sb_rxres)); |
8990e307 |
1138 | break; |
1139 | } |
17c3b450 |
1140 | #endif /* DEBUGGING */ |
35ff7856 |
1141 | } |