Commit | Line | Data |
a0d0e21e |
1 | /* scope.c |
79072805 |
2 | * |
4eb8286e |
3 | * Copyright (c) 1991-1999, Larry Wall |
79072805 |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
a0d0e21e |
8 | */ |
9 | |
10 | /* |
11 | * "For the fashion of Minas Tirith was such that it was built on seven |
12 | * levels..." |
79072805 |
13 | */ |
14 | |
15 | #include "EXTERN.h" |
16 | #include "perl.h" |
17 | |
a0d0e21e |
18 | SV** |
8ac85365 |
19 | stack_grow(SV **sp, SV **p, int n) |
a0d0e21e |
20 | { |
11343788 |
21 | dTHR; |
a60c0954 |
22 | #if defined(DEBUGGING) && !defined(USE_THREADS) |
23 | static int growing = 0; |
24 | if (growing++) |
25 | abort(); |
26 | #endif |
3280af22 |
27 | PL_stack_sp = sp; |
2ce36478 |
28 | #ifndef STRESS_REALLOC |
3280af22 |
29 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128); |
2ce36478 |
30 | #else |
6b88bc9c |
31 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1); |
2ce36478 |
32 | #endif |
a60c0954 |
33 | #if defined(DEBUGGING) && !defined(USE_THREADS) |
34 | growing--; |
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 * |
46 | new_stackinfo(I32 stitems, I32 cxitems) |
47 | { |
48 | PERL_SI *si; |
49 | PERL_CONTEXT *cxt; |
50 | New(56, si, 1, PERL_SI); |
51 | si->si_stack = newAV(); |
52 | AvREAL_off(si->si_stack); |
53 | av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0); |
3280af22 |
54 | AvALLOC(si->si_stack)[0] = &PL_sv_undef; |
e336de0d |
55 | AvFILLp(si->si_stack) = 0; |
56 | si->si_prev = 0; |
57 | si->si_next = 0; |
58 | si->si_cxmax = cxitems - 1; |
59 | si->si_cxix = -1; |
e788e7d3 |
60 | si->si_type = PERLSI_UNDEF; |
e336de0d |
61 | New(56, si->si_cxstack, cxitems, PERL_CONTEXT); |
62 | return si; |
63 | } |
64 | |
79072805 |
65 | I32 |
8ac85365 |
66 | cxinc(void) |
79072805 |
67 | { |
11343788 |
68 | dTHR; |
2ce36478 |
69 | cxstack_max = GROW(cxstack_max); |
c09156bb |
70 | Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */ |
79072805 |
71 | return cxstack_ix + 1; |
72 | } |
73 | |
74 | void |
8ac85365 |
75 | push_return(OP *retop) |
79072805 |
76 | { |
11343788 |
77 | dTHR; |
3280af22 |
78 | if (PL_retstack_ix == PL_retstack_max) { |
79 | PL_retstack_max = GROW(PL_retstack_max); |
80 | Renew(PL_retstack, PL_retstack_max, OP*); |
79072805 |
81 | } |
3280af22 |
82 | PL_retstack[PL_retstack_ix++] = retop; |
79072805 |
83 | } |
84 | |
85 | OP * |
8ac85365 |
86 | pop_return(void) |
79072805 |
87 | { |
11343788 |
88 | dTHR; |
3280af22 |
89 | if (PL_retstack_ix > 0) |
90 | return PL_retstack[--PL_retstack_ix]; |
79072805 |
91 | else |
92 | return Nullop; |
93 | } |
94 | |
95 | void |
8ac85365 |
96 | push_scope(void) |
79072805 |
97 | { |
11343788 |
98 | dTHR; |
3280af22 |
99 | if (PL_scopestack_ix == PL_scopestack_max) { |
100 | PL_scopestack_max = GROW(PL_scopestack_max); |
101 | Renew(PL_scopestack, PL_scopestack_max, I32); |
79072805 |
102 | } |
3280af22 |
103 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 |
104 | |
105 | } |
106 | |
107 | void |
8ac85365 |
108 | pop_scope(void) |
79072805 |
109 | { |
11343788 |
110 | dTHR; |
3280af22 |
111 | I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 |
112 | LEAVE_SCOPE(oldsave); |
79072805 |
113 | } |
114 | |
115 | void |
8ac85365 |
116 | markstack_grow(void) |
a0d0e21e |
117 | { |
11343788 |
118 | dTHR; |
3280af22 |
119 | I32 oldmax = PL_markstack_max - PL_markstack; |
2ce36478 |
120 | I32 newmax = GROW(oldmax); |
a0d0e21e |
121 | |
3280af22 |
122 | Renew(PL_markstack, newmax, I32); |
123 | PL_markstack_ptr = PL_markstack + oldmax; |
124 | PL_markstack_max = PL_markstack + newmax; |
a0d0e21e |
125 | } |
126 | |
127 | void |
8ac85365 |
128 | savestack_grow(void) |
79072805 |
129 | { |
11343788 |
130 | dTHR; |
3280af22 |
131 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
132 | Renew(PL_savestack, PL_savestack_max, ANY); |
79072805 |
133 | } |
134 | |
2ce36478 |
135 | #undef GROW |
136 | |
79072805 |
137 | void |
677b06e3 |
138 | tmps_grow(I32 n) |
139 | { |
140 | dTHR; |
141 | #ifndef STRESS_REALLOC |
142 | if (n < 128) |
143 | n = (PL_tmps_max < 512) ? 128 : 512; |
144 | #endif |
145 | PL_tmps_max = PL_tmps_ix + n + 1; |
146 | Renew(PL_tmps_stack, PL_tmps_max, SV*); |
147 | } |
148 | |
149 | |
150 | void |
8ac85365 |
151 | free_tmps(void) |
79072805 |
152 | { |
11343788 |
153 | dTHR; |
79072805 |
154 | /* XXX should tmps_floor live in cxstack? */ |
3280af22 |
155 | I32 myfloor = PL_tmps_floor; |
156 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
157 | SV* sv = PL_tmps_stack[PL_tmps_ix]; |
158 | PL_tmps_stack[PL_tmps_ix--] = Nullsv; |
463ee0b2 |
159 | if (sv) { |
463ee0b2 |
160 | SvTEMP_off(sv); |
8990e307 |
161 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 |
162 | } |
79072805 |
163 | } |
164 | } |
165 | |
76e3520e |
166 | STATIC SV * |
8ac85365 |
167 | save_scalar_at(SV **sptr) |
79072805 |
168 | { |
11343788 |
169 | dTHR; |
79072805 |
170 | register SV *sv; |
7a4c00b4 |
171 | SV *osv = *sptr; |
79072805 |
172 | |
7a4c00b4 |
173 | sv = *sptr = NEWSV(0,0); |
a0d0e21e |
174 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
79072805 |
175 | sv_upgrade(sv, SvTYPE(osv)); |
a0d0e21e |
176 | if (SvGMAGICAL(osv)) { |
748a9306 |
177 | MAGIC* mg; |
3280af22 |
178 | bool oldtainted = PL_tainted; |
a0d0e21e |
179 | mg_get(osv); |
3280af22 |
180 | if (PL_tainting && PL_tainted && (mg = mg_find(osv, 't'))) { |
748a9306 |
181 | SAVESPTR(mg->mg_obj); |
182 | mg->mg_obj = osv; |
183 | } |
a0d0e21e |
184 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
185 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
3280af22 |
186 | PL_tainted = oldtainted; |
a0d0e21e |
187 | } |
79072805 |
188 | SvMAGIC(sv) = SvMAGIC(osv); |
a0d0e21e |
189 | SvFLAGS(sv) |= SvMAGICAL(osv); |
3280af22 |
190 | PL_localizing = 1; |
79072805 |
191 | SvSETMAGIC(sv); |
3280af22 |
192 | PL_localizing = 0; |
79072805 |
193 | } |
194 | return sv; |
195 | } |
196 | |
7a4c00b4 |
197 | SV * |
8ac85365 |
198 | save_scalar(GV *gv) |
7a4c00b4 |
199 | { |
11343788 |
200 | dTHR; |
4e4c362e |
201 | SV **sptr = &GvSV(gv); |
7a4c00b4 |
202 | SSCHECK(3); |
4e4c362e |
203 | SSPUSHPTR(SvREFCNT_inc(gv)); |
204 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
205 | SSPUSHINT(SAVEt_SV); |
4e4c362e |
206 | return save_scalar_at(sptr); |
7a4c00b4 |
207 | } |
208 | |
209 | SV* |
8ac85365 |
210 | save_svref(SV **sptr) |
7a4c00b4 |
211 | { |
11343788 |
212 | dTHR; |
7a4c00b4 |
213 | SSCHECK(3); |
214 | SSPUSHPTR(sptr); |
4e4c362e |
215 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
216 | SSPUSHINT(SAVEt_SVREF); |
217 | return save_scalar_at(sptr); |
218 | } |
219 | |
b9d12d37 |
220 | /* Like save_svref(), but doesn't deal with magic. Can be used to |
221 | * restore a global SV to its prior contents, freeing new value. */ |
222 | void |
223 | save_generic_svref(SV **sptr) |
224 | { |
225 | dTHR; |
226 | SSCHECK(3); |
227 | SSPUSHPTR(sptr); |
228 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
229 | SSPUSHINT(SAVEt_GENERIC_SVREF); |
230 | } |
231 | |
79072805 |
232 | void |
8ac85365 |
233 | save_gp(GV *gv, I32 empty) |
79072805 |
234 | { |
e858de61 |
235 | dTHR; |
fb73857a |
236 | SSCHECK(6); |
237 | SSPUSHIV((IV)SvLEN(gv)); |
238 | SvLEN(gv) = 0; /* forget that anything was allocated here */ |
239 | SSPUSHIV((IV)SvCUR(gv)); |
240 | SSPUSHPTR(SvPVX(gv)); |
241 | SvPOK_off(gv); |
4633a7c4 |
242 | SSPUSHPTR(SvREFCNT_inc(gv)); |
5f05dabc |
243 | SSPUSHPTR(GvGP(gv)); |
79072805 |
244 | SSPUSHINT(SAVEt_GP); |
245 | |
5f05dabc |
246 | if (empty) { |
247 | register GP *gp; |
fae75791 |
248 | |
249 | if (GvCVu(gv)) |
3280af22 |
250 | PL_sub_generation++; /* taking a method out of circulation */ |
5f05dabc |
251 | Newz(602, gp, 1, GP); |
44a8e56a |
252 | GvGP(gv) = gp_ref(gp); |
5f05dabc |
253 | GvSV(gv) = NEWSV(72,0); |
3280af22 |
254 | GvLINE(gv) = PL_curcop->cop_line; |
5f05dabc |
255 | GvEGV(gv) = gv; |
256 | } |
257 | else { |
44a8e56a |
258 | gp_ref(GvGP(gv)); |
5f05dabc |
259 | GvINTRO_on(gv); |
260 | } |
79072805 |
261 | } |
79072805 |
262 | |
79072805 |
263 | AV * |
8ac85365 |
264 | save_ary(GV *gv) |
79072805 |
265 | { |
11343788 |
266 | dTHR; |
67a38de0 |
267 | AV *oav = GvAVn(gv); |
268 | AV *av; |
fb73857a |
269 | |
67a38de0 |
270 | if (!AvREAL(oav) && AvREIFY(oav)) |
271 | av_reify(oav); |
79072805 |
272 | SSCHECK(3); |
273 | SSPUSHPTR(gv); |
67a38de0 |
274 | SSPUSHPTR(oav); |
79072805 |
275 | SSPUSHINT(SAVEt_AV); |
276 | |
277 | GvAV(gv) = Null(AV*); |
fb73857a |
278 | av = GvAVn(gv); |
279 | if (SvMAGIC(oav)) { |
280 | SvMAGIC(av) = SvMAGIC(oav); |
281 | SvFLAGS(av) |= SvMAGICAL(oav); |
282 | SvMAGICAL_off(oav); |
283 | SvMAGIC(oav) = 0; |
3280af22 |
284 | PL_localizing = 1; |
fb73857a |
285 | SvSETMAGIC((SV*)av); |
3280af22 |
286 | PL_localizing = 0; |
fb73857a |
287 | } |
288 | return av; |
79072805 |
289 | } |
290 | |
291 | HV * |
8ac85365 |
292 | save_hash(GV *gv) |
79072805 |
293 | { |
11343788 |
294 | dTHR; |
fb73857a |
295 | HV *ohv, *hv; |
296 | |
79072805 |
297 | SSCHECK(3); |
298 | SSPUSHPTR(gv); |
fb73857a |
299 | SSPUSHPTR(ohv = GvHVn(gv)); |
79072805 |
300 | SSPUSHINT(SAVEt_HV); |
301 | |
302 | GvHV(gv) = Null(HV*); |
fb73857a |
303 | hv = GvHVn(gv); |
304 | if (SvMAGIC(ohv)) { |
305 | SvMAGIC(hv) = SvMAGIC(ohv); |
306 | SvFLAGS(hv) |= SvMAGICAL(ohv); |
307 | SvMAGICAL_off(ohv); |
308 | SvMAGIC(ohv) = 0; |
3280af22 |
309 | PL_localizing = 1; |
fb73857a |
310 | SvSETMAGIC((SV*)hv); |
3280af22 |
311 | PL_localizing = 0; |
fb73857a |
312 | } |
313 | return hv; |
79072805 |
314 | } |
315 | |
316 | void |
8ac85365 |
317 | save_item(register SV *item) |
79072805 |
318 | { |
11343788 |
319 | dTHR; |
f46d017c |
320 | register SV *sv = NEWSV(0,0); |
79072805 |
321 | |
f46d017c |
322 | sv_setsv(sv,item); |
79072805 |
323 | SSCHECK(3); |
324 | SSPUSHPTR(item); /* remember the pointer */ |
79072805 |
325 | SSPUSHPTR(sv); /* remember the value */ |
326 | SSPUSHINT(SAVEt_ITEM); |
327 | } |
328 | |
329 | void |
8ac85365 |
330 | save_int(int *intp) |
79072805 |
331 | { |
11343788 |
332 | dTHR; |
79072805 |
333 | SSCHECK(3); |
334 | SSPUSHINT(*intp); |
335 | SSPUSHPTR(intp); |
336 | SSPUSHINT(SAVEt_INT); |
337 | } |
338 | |
339 | void |
8ac85365 |
340 | save_long(long int *longp) |
85e6fe83 |
341 | { |
11343788 |
342 | dTHR; |
85e6fe83 |
343 | SSCHECK(3); |
344 | SSPUSHLONG(*longp); |
345 | SSPUSHPTR(longp); |
346 | SSPUSHINT(SAVEt_LONG); |
347 | } |
348 | |
349 | void |
8ac85365 |
350 | save_I32(I32 *intp) |
79072805 |
351 | { |
11343788 |
352 | dTHR; |
79072805 |
353 | SSCHECK(3); |
354 | SSPUSHINT(*intp); |
355 | SSPUSHPTR(intp); |
356 | SSPUSHINT(SAVEt_I32); |
357 | } |
358 | |
a0d0e21e |
359 | void |
8ac85365 |
360 | save_I16(I16 *intp) |
55497cff |
361 | { |
e858de61 |
362 | dTHR; |
55497cff |
363 | SSCHECK(3); |
364 | SSPUSHINT(*intp); |
365 | SSPUSHPTR(intp); |
366 | SSPUSHINT(SAVEt_I16); |
367 | } |
368 | |
369 | void |
8ac85365 |
370 | save_iv(IV *ivp) |
a0d0e21e |
371 | { |
11343788 |
372 | dTHR; |
a0d0e21e |
373 | SSCHECK(3); |
4aa0a1f7 |
374 | SSPUSHIV(*ivp); |
a0d0e21e |
375 | SSPUSHPTR(ivp); |
376 | SSPUSHINT(SAVEt_IV); |
377 | } |
378 | |
85e6fe83 |
379 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
380 | * force word-alignment and we'll miss the pointer. |
381 | */ |
382 | void |
8ac85365 |
383 | save_pptr(char **pptr) |
85e6fe83 |
384 | { |
11343788 |
385 | dTHR; |
85e6fe83 |
386 | SSCHECK(3); |
387 | SSPUSHPTR(*pptr); |
388 | SSPUSHPTR(pptr); |
389 | SSPUSHINT(SAVEt_PPTR); |
390 | } |
391 | |
79072805 |
392 | void |
8ac85365 |
393 | save_sptr(SV **sptr) |
79072805 |
394 | { |
11343788 |
395 | dTHR; |
79072805 |
396 | SSCHECK(3); |
397 | SSPUSHPTR(*sptr); |
398 | SSPUSHPTR(sptr); |
399 | SSPUSHINT(SAVEt_SPTR); |
400 | } |
401 | |
54b9620d |
402 | SV ** |
403 | save_threadsv(PADOFFSET i) |
404 | { |
405 | #ifdef USE_THREADS |
406 | dTHR; |
940cb80d |
407 | SV **svp = &THREADSV(i); /* XXX Change to save by offset */ |
8b73bbec |
408 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "save_threadsv %u: %p %p:%s\n", |
54b9620d |
409 | i, svp, *svp, SvPEEK(*svp))); |
410 | save_svref(svp); |
411 | return svp; |
412 | #else |
413 | croak("panic: save_threadsv called in non-threaded perl"); |
414 | return 0; |
415 | #endif /* USE_THREADS */ |
416 | } |
417 | |
79072805 |
418 | void |
8ac85365 |
419 | save_nogv(GV *gv) |
79072805 |
420 | { |
11343788 |
421 | dTHR; |
79072805 |
422 | SSCHECK(2); |
423 | SSPUSHPTR(gv); |
424 | SSPUSHINT(SAVEt_NSTAB); |
425 | } |
426 | |
427 | void |
8ac85365 |
428 | save_hptr(HV **hptr) |
79072805 |
429 | { |
11343788 |
430 | dTHR; |
79072805 |
431 | SSCHECK(3); |
85e6fe83 |
432 | SSPUSHPTR(*hptr); |
79072805 |
433 | SSPUSHPTR(hptr); |
434 | SSPUSHINT(SAVEt_HPTR); |
435 | } |
436 | |
437 | void |
8ac85365 |
438 | save_aptr(AV **aptr) |
79072805 |
439 | { |
11343788 |
440 | dTHR; |
79072805 |
441 | SSCHECK(3); |
85e6fe83 |
442 | SSPUSHPTR(*aptr); |
79072805 |
443 | SSPUSHPTR(aptr); |
444 | SSPUSHINT(SAVEt_APTR); |
445 | } |
446 | |
447 | void |
8ac85365 |
448 | save_freesv(SV *sv) |
8990e307 |
449 | { |
11343788 |
450 | dTHR; |
8990e307 |
451 | SSCHECK(2); |
452 | SSPUSHPTR(sv); |
453 | SSPUSHINT(SAVEt_FREESV); |
454 | } |
455 | |
456 | void |
8ac85365 |
457 | save_freeop(OP *o) |
8990e307 |
458 | { |
11343788 |
459 | dTHR; |
8990e307 |
460 | SSCHECK(2); |
11343788 |
461 | SSPUSHPTR(o); |
8990e307 |
462 | SSPUSHINT(SAVEt_FREEOP); |
463 | } |
464 | |
465 | void |
8ac85365 |
466 | save_freepv(char *pv) |
8990e307 |
467 | { |
11343788 |
468 | dTHR; |
8990e307 |
469 | SSCHECK(2); |
470 | SSPUSHPTR(pv); |
471 | SSPUSHINT(SAVEt_FREEPV); |
472 | } |
473 | |
474 | void |
8ac85365 |
475 | save_clearsv(SV **svp) |
8990e307 |
476 | { |
11343788 |
477 | dTHR; |
8990e307 |
478 | SSCHECK(2); |
3280af22 |
479 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 |
480 | SSPUSHINT(SAVEt_CLEARSV); |
481 | } |
482 | |
483 | void |
8ac85365 |
484 | save_delete(HV *hv, char *key, I32 klen) |
8990e307 |
485 | { |
11343788 |
486 | dTHR; |
8990e307 |
487 | SSCHECK(4); |
488 | SSPUSHINT(klen); |
489 | SSPUSHPTR(key); |
4e4c362e |
490 | SSPUSHPTR(SvREFCNT_inc(hv)); |
8990e307 |
491 | SSPUSHINT(SAVEt_DELETE); |
492 | } |
493 | |
494 | void |
8ac85365 |
495 | save_list(register SV **sarg, I32 maxsarg) |
79072805 |
496 | { |
11343788 |
497 | dTHR; |
79072805 |
498 | register SV *sv; |
499 | register I32 i; |
500 | |
79072805 |
501 | for (i = 1; i <= maxsarg; i++) { |
79072805 |
502 | sv = NEWSV(0,0); |
503 | sv_setsv(sv,sarg[i]); |
f46d017c |
504 | SSCHECK(3); |
505 | SSPUSHPTR(sarg[i]); /* remember the pointer */ |
79072805 |
506 | SSPUSHPTR(sv); /* remember the value */ |
507 | SSPUSHINT(SAVEt_ITEM); |
508 | } |
509 | } |
510 | |
511 | void |
76e3520e |
512 | #ifdef PERL_OBJECT |
565764a8 |
513 | save_destructor(DESTRUCTORFUNC f, void* p) |
76e3520e |
514 | #else |
8ac85365 |
515 | save_destructor(void (*f) (void *), void *p) |
76e3520e |
516 | #endif |
a0d0e21e |
517 | { |
11343788 |
518 | dTHR; |
a0d0e21e |
519 | SSCHECK(3); |
520 | SSPUSHDPTR(f); |
521 | SSPUSHPTR(p); |
522 | SSPUSHINT(SAVEt_DESTRUCTOR); |
523 | } |
524 | |
525 | void |
4e4c362e |
526 | save_aelem(AV *av, I32 idx, SV **sptr) |
527 | { |
528 | dTHR; |
529 | SSCHECK(4); |
530 | SSPUSHPTR(SvREFCNT_inc(av)); |
531 | SSPUSHINT(idx); |
532 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
533 | SSPUSHINT(SAVEt_AELEM); |
534 | save_scalar_at(sptr); |
535 | } |
536 | |
537 | void |
538 | save_helem(HV *hv, SV *key, SV **sptr) |
539 | { |
540 | dTHR; |
541 | SSCHECK(4); |
542 | SSPUSHPTR(SvREFCNT_inc(hv)); |
543 | SSPUSHPTR(SvREFCNT_inc(key)); |
544 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
545 | SSPUSHINT(SAVEt_HELEM); |
546 | save_scalar_at(sptr); |
547 | } |
548 | |
549 | void |
8ac85365 |
550 | save_op(void) |
462e5cf6 |
551 | { |
552 | dTHR; |
553 | SSCHECK(2); |
533c011a |
554 | SSPUSHPTR(PL_op); |
462e5cf6 |
555 | SSPUSHINT(SAVEt_OP); |
556 | } |
557 | |
455ece5e |
558 | I32 |
559 | save_alloc(I32 size, I32 pad) |
560 | { |
561 | dTHR; |
562 | register I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
563 | - (char*)PL_savestack); |
564 | register I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
565 | |
566 | /* SSCHECK may not be good enough */ |
567 | while (PL_savestack_ix + elems + 2 > PL_savestack_max) |
568 | savestack_grow(); |
569 | |
570 | PL_savestack_ix += elems; |
571 | SSPUSHINT(elems); |
572 | SSPUSHINT(SAVEt_ALLOC); |
573 | return start; |
574 | } |
575 | |
462e5cf6 |
576 | void |
8ac85365 |
577 | leave_scope(I32 base) |
79072805 |
578 | { |
11343788 |
579 | dTHR; |
79072805 |
580 | register SV *sv; |
581 | register SV *value; |
582 | register GV *gv; |
583 | register AV *av; |
584 | register HV *hv; |
585 | register void* ptr; |
161b7d16 |
586 | I32 i; |
79072805 |
587 | |
588 | if (base < -1) |
463ee0b2 |
589 | croak("panic: corrupt saved stack index"); |
3280af22 |
590 | while (PL_savestack_ix > base) { |
79072805 |
591 | switch (SSPOPINT) { |
592 | case SAVEt_ITEM: /* normal string */ |
593 | value = (SV*)SSPOPPTR; |
594 | sv = (SV*)SSPOPPTR; |
595 | sv_replace(sv,value); |
3280af22 |
596 | PL_localizing = 2; |
79072805 |
597 | SvSETMAGIC(sv); |
3280af22 |
598 | PL_localizing = 0; |
79072805 |
599 | break; |
600 | case SAVEt_SV: /* scalar reference */ |
601 | value = (SV*)SSPOPPTR; |
602 | gv = (GV*)SSPOPPTR; |
7a4c00b4 |
603 | ptr = &GvSV(gv); |
4e4c362e |
604 | SvREFCNT_dec(gv); |
7a4c00b4 |
605 | goto restore_sv; |
b9d12d37 |
606 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
607 | value = (SV*)SSPOPPTR; |
608 | ptr = SSPOPPTR; |
609 | if (ptr) { |
610 | sv = *(SV**)ptr; |
611 | *(SV**)ptr = value; |
612 | SvREFCNT_dec(sv); |
613 | } |
614 | SvREFCNT_dec(value); |
615 | break; |
79072805 |
616 | case SAVEt_SVREF: /* scalar reference */ |
7a4c00b4 |
617 | value = (SV*)SSPOPPTR; |
79072805 |
618 | ptr = SSPOPPTR; |
7a4c00b4 |
619 | restore_sv: |
79072805 |
620 | sv = *(SV**)ptr; |
8b73bbec |
621 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
54b9620d |
622 | "restore svref: %p %p:%s -> %p:%s\n", |
623 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
748a9306 |
624 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
625 | SvTYPE(sv) != SVt_PVGV) |
626 | { |
a0d0e21e |
627 | (void)SvUPGRADE(value, SvTYPE(sv)); |
628 | SvMAGIC(value) = SvMAGIC(sv); |
629 | SvFLAGS(value) |= SvMAGICAL(sv); |
630 | SvMAGICAL_off(sv); |
79072805 |
631 | SvMAGIC(sv) = 0; |
a0d0e21e |
632 | } |
7a4c00b4 |
633 | else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) && |
634 | SvTYPE(value) != SVt_PVGV) |
635 | { |
636 | SvFLAGS(value) |= (SvFLAGS(value) & |
637 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
638 | SvMAGICAL_off(value); |
639 | SvMAGIC(value) = 0; |
640 | } |
8990e307 |
641 | SvREFCNT_dec(sv); |
a0d0e21e |
642 | *(SV**)ptr = value; |
3280af22 |
643 | PL_localizing = 2; |
a0d0e21e |
644 | SvSETMAGIC(value); |
3280af22 |
645 | PL_localizing = 0; |
4e4c362e |
646 | SvREFCNT_dec(value); |
79072805 |
647 | break; |
648 | case SAVEt_AV: /* array reference */ |
649 | av = (AV*)SSPOPPTR; |
650 | gv = (GV*)SSPOPPTR; |
fb73857a |
651 | if (GvAV(gv)) { |
652 | AV *goner = GvAV(gv); |
653 | SvMAGIC(av) = SvMAGIC(goner); |
654 | SvFLAGS(av) |= SvMAGICAL(goner); |
655 | SvMAGICAL_off(goner); |
656 | SvMAGIC(goner) = 0; |
657 | SvREFCNT_dec(goner); |
658 | } |
79072805 |
659 | GvAV(gv) = av; |
fb73857a |
660 | if (SvMAGICAL(av)) { |
3280af22 |
661 | PL_localizing = 2; |
fb73857a |
662 | SvSETMAGIC((SV*)av); |
3280af22 |
663 | PL_localizing = 0; |
fb73857a |
664 | } |
79072805 |
665 | break; |
666 | case SAVEt_HV: /* hash reference */ |
667 | hv = (HV*)SSPOPPTR; |
668 | gv = (GV*)SSPOPPTR; |
fb73857a |
669 | if (GvHV(gv)) { |
670 | HV *goner = GvHV(gv); |
671 | SvMAGIC(hv) = SvMAGIC(goner); |
672 | SvFLAGS(hv) |= SvMAGICAL(goner); |
673 | SvMAGICAL_off(goner); |
674 | SvMAGIC(goner) = 0; |
675 | SvREFCNT_dec(goner); |
676 | } |
79072805 |
677 | GvHV(gv) = hv; |
fb73857a |
678 | if (SvMAGICAL(hv)) { |
3280af22 |
679 | PL_localizing = 2; |
fb73857a |
680 | SvSETMAGIC((SV*)hv); |
3280af22 |
681 | PL_localizing = 0; |
fb73857a |
682 | } |
79072805 |
683 | break; |
684 | case SAVEt_INT: /* int reference */ |
685 | ptr = SSPOPPTR; |
686 | *(int*)ptr = (int)SSPOPINT; |
687 | break; |
85e6fe83 |
688 | case SAVEt_LONG: /* long reference */ |
689 | ptr = SSPOPPTR; |
690 | *(long*)ptr = (long)SSPOPLONG; |
691 | break; |
79072805 |
692 | case SAVEt_I32: /* I32 reference */ |
693 | ptr = SSPOPPTR; |
694 | *(I32*)ptr = (I32)SSPOPINT; |
695 | break; |
55497cff |
696 | case SAVEt_I16: /* I16 reference */ |
697 | ptr = SSPOPPTR; |
698 | *(I16*)ptr = (I16)SSPOPINT; |
699 | break; |
a0d0e21e |
700 | case SAVEt_IV: /* IV reference */ |
701 | ptr = SSPOPPTR; |
702 | *(IV*)ptr = (IV)SSPOPIV; |
703 | break; |
79072805 |
704 | case SAVEt_SPTR: /* SV* reference */ |
705 | ptr = SSPOPPTR; |
706 | *(SV**)ptr = (SV*)SSPOPPTR; |
707 | break; |
85e6fe83 |
708 | case SAVEt_PPTR: /* char* reference */ |
709 | ptr = SSPOPPTR; |
710 | *(char**)ptr = (char*)SSPOPPTR; |
711 | break; |
79072805 |
712 | case SAVEt_HPTR: /* HV* reference */ |
713 | ptr = SSPOPPTR; |
714 | *(HV**)ptr = (HV*)SSPOPPTR; |
715 | break; |
716 | case SAVEt_APTR: /* AV* reference */ |
717 | ptr = SSPOPPTR; |
718 | *(AV**)ptr = (AV*)SSPOPPTR; |
719 | break; |
720 | case SAVEt_NSTAB: |
721 | gv = (GV*)SSPOPPTR; |
1f96a9ed |
722 | (void)sv_clear((SV*)gv); |
79072805 |
723 | break; |
fb73857a |
724 | case SAVEt_GP: /* scalar reference */ |
79072805 |
725 | ptr = SSPOPPTR; |
726 | gv = (GV*)SSPOPPTR; |
ed6c1d6b |
727 | if (SvPVX(gv) && SvLEN(gv) > 0) { |
fb73857a |
728 | Safefree(SvPVX(gv)); |
729 | } |
730 | SvPVX(gv) = (char *)SSPOPPTR; |
731 | SvCUR(gv) = (STRLEN)SSPOPIV; |
732 | SvLEN(gv) = (STRLEN)SSPOPIV; |
f46d017c |
733 | gp_free(gv); |
734 | GvGP(gv) = (GP*)ptr; |
fae75791 |
735 | if (GvCVu(gv)) |
3280af22 |
736 | PL_sub_generation++; /* putting a method back into circulation */ |
4633a7c4 |
737 | SvREFCNT_dec(gv); |
79072805 |
738 | break; |
8990e307 |
739 | case SAVEt_FREESV: |
740 | ptr = SSPOPPTR; |
741 | SvREFCNT_dec((SV*)ptr); |
742 | break; |
743 | case SAVEt_FREEOP: |
744 | ptr = SSPOPPTR; |
3280af22 |
745 | if (PL_comppad) |
746 | PL_curpad = AvARRAY(PL_comppad); |
8990e307 |
747 | op_free((OP*)ptr); |
748 | break; |
749 | case SAVEt_FREEPV: |
750 | ptr = SSPOPPTR; |
751 | Safefree((char*)ptr); |
752 | break; |
753 | case SAVEt_CLEARSV: |
3280af22 |
754 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 |
755 | sv = *(SV**)ptr; |
bc44cdaf |
756 | /* Can clear pad variable in place? */ |
757 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { |
6fc92669 |
758 | if (SvTHINKFIRST(sv)) |
759 | sv_force_normal(sv); |
a0d0e21e |
760 | if (SvMAGICAL(sv)) |
761 | mg_free(sv); |
8990e307 |
762 | |
763 | switch (SvTYPE(sv)) { |
764 | case SVt_NULL: |
765 | break; |
766 | case SVt_PVAV: |
44a8e56a |
767 | av_clear((AV*)sv); |
8990e307 |
768 | break; |
769 | case SVt_PVHV: |
44a8e56a |
770 | hv_clear((HV*)sv); |
8990e307 |
771 | break; |
772 | case SVt_PVCV: |
5377b701 |
773 | croak("panic: leave_scope pad code"); |
774 | case SVt_RV: |
775 | case SVt_IV: |
776 | case SVt_NV: |
777 | (void)SvOK_off(sv); |
8990e307 |
778 | break; |
779 | default: |
a0d0e21e |
780 | (void)SvOK_off(sv); |
5377b701 |
781 | (void)SvOOK_off(sv); |
8990e307 |
782 | break; |
783 | } |
784 | } |
785 | else { /* Someone has a claim on this, so abandon it. */ |
4aa0a1f7 |
786 | U32 padflags = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP); |
8990e307 |
787 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
788 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; |
789 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; |
790 | default: *(SV**)ptr = NEWSV(0,0); break; |
791 | } |
53868620 |
792 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
4aa0a1f7 |
793 | SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */ |
8990e307 |
794 | } |
795 | break; |
796 | case SAVEt_DELETE: |
797 | ptr = SSPOPPTR; |
798 | hv = (HV*)ptr; |
799 | ptr = SSPOPPTR; |
748a9306 |
800 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
4e4c362e |
801 | SvREFCNT_dec(hv); |
adbc6bb1 |
802 | Safefree(ptr); |
8990e307 |
803 | break; |
a0d0e21e |
804 | case SAVEt_DESTRUCTOR: |
805 | ptr = SSPOPPTR; |
565764a8 |
806 | (CALLDESTRUCTOR)(ptr); |
a0d0e21e |
807 | break; |
808 | case SAVEt_REGCONTEXT: |
455ece5e |
809 | case SAVEt_ALLOC: |
161b7d16 |
810 | i = SSPOPINT; |
3280af22 |
811 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e |
812 | break; |
55497cff |
813 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 |
814 | i = SSPOPINT; |
3280af22 |
815 | PL_stack_sp = PL_stack_base + i; |
55497cff |
816 | break; |
161b7d16 |
817 | case SAVEt_AELEM: /* array element */ |
818 | value = (SV*)SSPOPPTR; |
819 | i = SSPOPINT; |
820 | av = (AV*)SSPOPPTR; |
821 | ptr = av_fetch(av,i,1); |
4e4c362e |
822 | if (ptr) { |
823 | sv = *(SV**)ptr; |
3280af22 |
824 | if (sv && sv != &PL_sv_undef) { |
33c27489 |
825 | if (SvTIED_mg((SV*)av, 'P')) |
4e4c362e |
826 | (void)SvREFCNT_inc(sv); |
827 | SvREFCNT_dec(av); |
828 | goto restore_sv; |
829 | } |
830 | } |
831 | SvREFCNT_dec(av); |
832 | SvREFCNT_dec(value); |
833 | break; |
161b7d16 |
834 | case SAVEt_HELEM: /* hash element */ |
835 | value = (SV*)SSPOPPTR; |
9002cb76 |
836 | sv = (SV*)SSPOPPTR; |
161b7d16 |
837 | hv = (HV*)SSPOPPTR; |
838 | ptr = hv_fetch_ent(hv, sv, 1, 0); |
4e4c362e |
839 | if (ptr) { |
840 | SV *oval = HeVAL((HE*)ptr); |
3280af22 |
841 | if (oval && oval != &PL_sv_undef) { |
4e4c362e |
842 | ptr = &HeVAL((HE*)ptr); |
33c27489 |
843 | if (SvTIED_mg((SV*)hv, 'P')) |
4e4c362e |
844 | (void)SvREFCNT_inc(*(SV**)ptr); |
845 | SvREFCNT_dec(hv); |
846 | SvREFCNT_dec(sv); |
847 | goto restore_sv; |
848 | } |
849 | } |
850 | SvREFCNT_dec(hv); |
851 | SvREFCNT_dec(sv); |
852 | SvREFCNT_dec(value); |
853 | break; |
462e5cf6 |
854 | case SAVEt_OP: |
533c011a |
855 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 |
856 | break; |
25eaa213 |
857 | case SAVEt_HINTS: |
3280af22 |
858 | if (GvHV(PL_hintgv)) { |
859 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); |
860 | GvHV(PL_hintgv) = NULL; |
b3ac6de7 |
861 | } |
3280af22 |
862 | *(I32*)&PL_hints = (I32)SSPOPINT; |
b3ac6de7 |
863 | break; |
79072805 |
864 | default: |
463ee0b2 |
865 | croak("panic: leave_scope inconsistency"); |
79072805 |
866 | } |
867 | } |
868 | } |
8990e307 |
869 | |
8990e307 |
870 | void |
c09156bb |
871 | cx_dump(PERL_CONTEXT *cx) |
8990e307 |
872 | { |
35ff7856 |
873 | #ifdef DEBUGGING |
11343788 |
874 | dTHR; |
22c35a8c |
875 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 |
876 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 |
877 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
878 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop); |
879 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
880 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); |
881 | PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp); |
882 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm); |
883 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 |
884 | } |
6b35e009 |
885 | switch (CxTYPE(cx)) { |
8990e307 |
886 | case CXt_NULL: |
887 | case CXt_BLOCK: |
888 | break; |
889 | case CXt_SUB: |
760ac839 |
890 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%lx\n", |
8990e307 |
891 | (long)cx->blk_sub.cv); |
760ac839 |
892 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%lx\n", |
8990e307 |
893 | (long)cx->blk_sub.gv); |
760ac839 |
894 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%lx\n", |
8990e307 |
895 | (long)cx->blk_sub.dfoutgv); |
760ac839 |
896 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 |
897 | (long)cx->blk_sub.olddepth); |
760ac839 |
898 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 |
899 | (int)cx->blk_sub.hasargs); |
900 | break; |
901 | case CXt_EVAL: |
760ac839 |
902 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 |
903 | (long)cx->blk_eval.old_in_eval); |
760ac839 |
904 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
22c35a8c |
905 | PL_op_name[cx->blk_eval.old_op_type], |
906 | PL_op_desc[cx->blk_eval.old_op_type]); |
760ac839 |
907 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", |
8990e307 |
908 | cx->blk_eval.old_name); |
760ac839 |
909 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n", |
8990e307 |
910 | (long)cx->blk_eval.old_eval_root); |
911 | break; |
912 | |
913 | case CXt_LOOP: |
760ac839 |
914 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 |
915 | cx->blk_loop.label); |
760ac839 |
916 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 |
917 | (long)cx->blk_loop.resetsp); |
760ac839 |
918 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%lx\n", |
8990e307 |
919 | (long)cx->blk_loop.redo_op); |
760ac839 |
920 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%lx\n", |
8990e307 |
921 | (long)cx->blk_loop.next_op); |
760ac839 |
922 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%lx\n", |
8990e307 |
923 | (long)cx->blk_loop.last_op); |
760ac839 |
924 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 |
925 | (long)cx->blk_loop.iterix); |
760ac839 |
926 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%lx\n", |
8990e307 |
927 | (long)cx->blk_loop.iterary); |
760ac839 |
928 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%lx\n", |
8990e307 |
929 | (long)cx->blk_loop.itervar); |
930 | if (cx->blk_loop.itervar) |
760ac839 |
931 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%lx\n", |
8990e307 |
932 | (long)cx->blk_loop.itersave); |
7a4c00b4 |
933 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%lx\n", |
934 | (long)cx->blk_loop.iterlval); |
8990e307 |
935 | break; |
936 | |
937 | case CXt_SUBST: |
760ac839 |
938 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 |
939 | (long)cx->sb_iters); |
760ac839 |
940 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 |
941 | (long)cx->sb_maxiters); |
35ef4773 |
942 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
943 | (long)cx->sb_rflags); |
760ac839 |
944 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 |
945 | (long)cx->sb_once); |
760ac839 |
946 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 |
947 | cx->sb_orig); |
760ac839 |
948 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%lx\n", |
8990e307 |
949 | (long)cx->sb_dstr); |
760ac839 |
950 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%lx\n", |
8990e307 |
951 | (long)cx->sb_targ); |
760ac839 |
952 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%lx\n", |
8990e307 |
953 | (long)cx->sb_s); |
760ac839 |
954 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%lx\n", |
8990e307 |
955 | (long)cx->sb_m); |
760ac839 |
956 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%lx\n", |
8990e307 |
957 | (long)cx->sb_strend); |
c90c0ff4 |
958 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%lx\n", |
959 | (long)cx->sb_rxres); |
8990e307 |
960 | break; |
961 | } |
17c3b450 |
962 | #endif /* DEBUGGING */ |
35ff7856 |
963 | } |