3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
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.
12 * "For the fashion of Minas Tirith was such that it was built on seven
16 /* This file contains functions to manipulate several of Perl's stacks;
17 * in particular it contains code to push various types of things onto
18 * the savestack, then to pop them off and perform the correct restorative
19 * action for each one. This corresponds to the cleanup Perl does at
24 #define PERL_IN_SCOPE_C
27 #if defined(PERL_FLEXIBLE_EXCEPTIONS)
29 Perl_default_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt,
30 protect_body_t body, ...)
35 ret = vdefault_protect(pcur_env, excpt, body, &args);
41 Perl_vdefault_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt,
42 protect_body_t body, va_list *args)
51 ret = CALL_FPTR(body)(aTHX_ *args);
59 Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
62 #ifndef STRESS_REALLOC
63 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
65 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1);
70 #ifndef STRESS_REALLOC
71 #define GROW(old) ((old) * 3 / 2)
73 #define GROW(old) ((old) + 1)
77 Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
81 si->si_stack = newAV();
82 AvREAL_off(si->si_stack);
83 av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
84 AvALLOC(si->si_stack)[0] = &PL_sv_undef;
85 AvFILLp(si->si_stack) = 0;
88 si->si_cxmax = cxitems - 1;
90 si->si_type = PERLSI_UNDEF;
91 Newx(si->si_cxstack, cxitems, PERL_CONTEXT);
92 /* Without any kind of initialising PUSHSUBST()
93 * in pp_subst() will read uninitialised heap. */
94 Poison(si->si_cxstack, cxitems, PERL_CONTEXT);
101 const IV old_max = cxstack_max;
102 cxstack_max = GROW(cxstack_max);
103 Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */
104 /* Without any kind of initialising deep enough recursion
105 * will end up reading uninitialised PERL_CONTEXTs. */
106 Poison(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT);
107 return cxstack_ix + 1;
111 Perl_push_return(pTHX_ OP *retop)
113 if (PL_retstack_ix == PL_retstack_max) {
114 PL_retstack_max = GROW(PL_retstack_max);
115 Renew(PL_retstack, PL_retstack_max, OP*);
117 PL_retstack[PL_retstack_ix++] = retop;
121 Perl_pop_return(pTHX)
123 if (PL_retstack_ix > 0)
124 return PL_retstack[--PL_retstack_ix];
130 Perl_push_scope(pTHX)
132 if (PL_scopestack_ix == PL_scopestack_max) {
133 PL_scopestack_max = GROW(PL_scopestack_max);
134 Renew(PL_scopestack, PL_scopestack_max, I32);
136 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
143 const I32 oldsave = PL_scopestack[--PL_scopestack_ix];
144 LEAVE_SCOPE(oldsave);
148 Perl_markstack_grow(pTHX)
150 const I32 oldmax = PL_markstack_max - PL_markstack;
151 const I32 newmax = GROW(oldmax);
153 Renew(PL_markstack, newmax, I32);
154 PL_markstack_ptr = PL_markstack + oldmax;
155 PL_markstack_max = PL_markstack + newmax;
159 Perl_savestack_grow(pTHX)
161 PL_savestack_max = GROW(PL_savestack_max) + 4;
162 Renew(PL_savestack, PL_savestack_max, ANY);
166 Perl_savestack_grow_cnt(pTHX_ I32 need)
168 PL_savestack_max = PL_savestack_ix + need;
169 Renew(PL_savestack, PL_savestack_max, ANY);
175 Perl_tmps_grow(pTHX_ I32 n)
177 #ifndef STRESS_REALLOC
179 n = (PL_tmps_max < 512) ? 128 : 512;
181 PL_tmps_max = PL_tmps_ix + n + 1;
182 Renew(PL_tmps_stack, PL_tmps_max, SV*);
189 /* XXX should tmps_floor live in cxstack? */
190 const I32 myfloor = PL_tmps_floor;
191 while (PL_tmps_ix > myfloor) { /* clean up after last statement */
192 SV* const sv = PL_tmps_stack[PL_tmps_ix];
193 PL_tmps_stack[PL_tmps_ix--] = Nullsv;
194 if (sv && sv != &PL_sv_undef) {
196 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
202 S_save_scalar_at(pTHX_ SV **sptr)
204 SV * const osv = *sptr;
205 register SV * const sv = *sptr = NEWSV(0,0);
207 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
208 sv_upgrade(sv, SvTYPE(osv));
209 if (SvGMAGICAL(osv)) {
211 const bool oldtainted = PL_tainted;
212 mg_get(osv); /* note, can croak! */
213 if (PL_tainting && PL_tainted &&
214 (mg = mg_find(osv, PERL_MAGIC_taint))) {
215 SAVESPTR(mg->mg_obj);
218 SvFLAGS(osv) |= (SvFLAGS(osv) &
219 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
220 PL_tainted = oldtainted;
222 SvMAGIC_set(sv, SvMAGIC(osv));
223 SvFLAGS(sv) |= SvMAGICAL(osv);
224 /* XXX SvMAGIC() is *shared* between osv and sv. This can
225 * lead to coredumps when both SVs are destroyed without one
226 * of their SvMAGIC() slots being NULLed. */
235 Perl_save_scalar(pTHX_ GV *gv)
237 SV **sptr = &GvSV(gv);
239 SSPUSHPTR(SvREFCNT_inc(gv));
240 SSPUSHPTR(SvREFCNT_inc(*sptr));
242 return save_scalar_at(sptr);
246 Perl_save_svref(pTHX_ SV **sptr)
250 SSPUSHPTR(SvREFCNT_inc(*sptr));
251 SSPUSHINT(SAVEt_SVREF);
252 return save_scalar_at(sptr);
255 /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
256 * restore a global SV to its prior contents, freeing new value. */
258 Perl_save_generic_svref(pTHX_ SV **sptr)
262 SSPUSHPTR(SvREFCNT_inc(*sptr));
263 SSPUSHINT(SAVEt_GENERIC_SVREF);
266 /* Like save_pptr(), but also Safefree()s the new value if it is different
267 * from the old one. Can be used to restore a global char* to its prior
268 * contents, freeing new value. */
270 Perl_save_generic_pvref(pTHX_ char **str)
275 SSPUSHINT(SAVEt_GENERIC_PVREF);
278 /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
279 * Can be used to restore a shared global char* to its prior
280 * contents, freeing new value. */
282 Perl_save_shared_pvref(pTHX_ char **str)
287 SSPUSHINT(SAVEt_SHARED_PVREF);
291 Perl_save_gp(pTHX_ GV *gv, I32 empty)
294 SSPUSHIV((IV)SvLEN(gv));
295 SvLEN_set(gv, 0); /* forget that anything was allocated here */
296 SSPUSHIV((IV)SvCUR(gv));
297 SSPUSHPTR(SvPVX_const(gv));
299 SSPUSHPTR(SvREFCNT_inc(gv));
309 PL_sub_generation++; /* taking a method out of circulation */
310 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
312 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
314 GvGP(gv) = gp_ref(gp);
315 GvSV(gv) = NEWSV(72,0);
316 GvLINE(gv) = CopLINE(PL_curcop);
317 /* XXX Ideally this cast would be replaced with a change to const char*
319 GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : (char *) "";
329 Perl_save_ary(pTHX_ GV *gv)
331 AV * const oav = GvAVn(gv);
334 if (!AvREAL(oav) && AvREIFY(oav))
341 GvAV(gv) = Null(AV*);
344 SvMAGIC_set(av, SvMAGIC(oav));
345 SvFLAGS((SV*)av) |= SvMAGICAL(oav);
347 SvMAGIC_set(oav, NULL);
356 Perl_save_hash(pTHX_ GV *gv)
362 SSPUSHPTR(ohv = GvHVn(gv));
365 GvHV(gv) = Null(HV*);
368 SvMAGIC_set(hv, SvMAGIC(ohv));
369 SvFLAGS((SV*)hv) |= SvMAGICAL(ohv);
371 SvMAGIC_set(ohv, NULL);
380 Perl_save_item(pTHX_ register SV *item)
382 register SV * const sv = newSVsv(item);
385 SSPUSHPTR(item); /* remember the pointer */
386 SSPUSHPTR(sv); /* remember the value */
387 SSPUSHINT(SAVEt_ITEM);
391 Perl_save_int(pTHX_ int *intp)
396 SSPUSHINT(SAVEt_INT);
400 Perl_save_long(pTHX_ long int *longp)
405 SSPUSHINT(SAVEt_LONG);
409 Perl_save_bool(pTHX_ bool *boolp)
414 SSPUSHINT(SAVEt_BOOL);
418 Perl_save_I32(pTHX_ I32 *intp)
423 SSPUSHINT(SAVEt_I32);
427 Perl_save_I16(pTHX_ I16 *intp)
432 SSPUSHINT(SAVEt_I16);
436 Perl_save_I8(pTHX_ I8 *bytep)
445 Perl_save_iv(pTHX_ IV *ivp)
453 /* Cannot use save_sptr() to store a char* since the SV** cast will
454 * force word-alignment and we'll miss the pointer.
457 Perl_save_pptr(pTHX_ char **pptr)
462 SSPUSHINT(SAVEt_PPTR);
466 Perl_save_vptr(pTHX_ void *ptr)
469 SSPUSHPTR(*(char**)ptr);
471 SSPUSHINT(SAVEt_VPTR);
475 Perl_save_sptr(pTHX_ SV **sptr)
480 SSPUSHINT(SAVEt_SPTR);
484 Perl_save_padsv(pTHX_ PADOFFSET off)
487 ASSERT_CURPAD_ACTIVE("save_padsv");
488 SSPUSHPTR(PL_curpad[off]);
489 SSPUSHPTR(PL_comppad);
490 SSPUSHLONG((long)off);
491 SSPUSHINT(SAVEt_PADSV);
495 Perl_save_threadsv(pTHX_ PADOFFSET i)
497 #ifdef USE_5005THREADS
498 SV **svp = &THREADSV(i); /* XXX Change to save by offset */
499 DEBUG_S(PerlIO_printf(Perl_debug_log, "save_threadsv %"UVuf": %p %p:%s\n",
500 (UV)i, svp, *svp, SvPEEK(*svp)));
504 Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl");
506 NORETURN_FUNCTION_END;
507 #endif /* USE_5005THREADS */
511 Perl_save_nogv(pTHX_ GV *gv)
515 SSPUSHINT(SAVEt_NSTAB);
519 Perl_save_hptr(pTHX_ HV **hptr)
524 SSPUSHINT(SAVEt_HPTR);
528 Perl_save_aptr(pTHX_ AV **aptr)
533 SSPUSHINT(SAVEt_APTR);
537 Perl_save_freesv(pTHX_ SV *sv)
541 SSPUSHINT(SAVEt_FREESV);
545 Perl_save_mortalizesv(pTHX_ SV *sv)
549 SSPUSHINT(SAVEt_MORTALIZESV);
553 Perl_save_freeop(pTHX_ OP *o)
557 SSPUSHINT(SAVEt_FREEOP);
561 Perl_save_freepv(pTHX_ char *pv)
565 SSPUSHINT(SAVEt_FREEPV);
569 Perl_save_clearsv(pTHX_ SV **svp)
571 ASSERT_CURPAD_ACTIVE("save_clearsv");
573 SSPUSHLONG((long)(svp-PL_curpad));
574 SSPUSHINT(SAVEt_CLEARSV);
578 Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
583 SSPUSHPTR(SvREFCNT_inc(hv));
584 SSPUSHINT(SAVEt_DELETE);
588 Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg)
592 for (i = 1; i <= maxsarg; i++) {
593 register SV * const sv = NEWSV(0,0);
594 sv_setsv(sv,sarg[i]);
596 SSPUSHPTR(sarg[i]); /* remember the pointer */
597 SSPUSHPTR(sv); /* remember the value */
598 SSPUSHINT(SAVEt_ITEM);
603 Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
608 SSPUSHINT(SAVEt_DESTRUCTOR);
612 Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
617 SSPUSHINT(SAVEt_DESTRUCTOR_X);
621 Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr)
625 SSPUSHPTR(SvREFCNT_inc(av));
627 SSPUSHPTR(SvREFCNT_inc(*sptr));
628 SSPUSHINT(SAVEt_AELEM);
629 /* if it gets reified later, the restore will have the wrong refcnt */
630 if (!AvREAL(av) && AvREIFY(av))
631 (void)SvREFCNT_inc(*sptr);
632 save_scalar_at(sptr);
634 /* If we're localizing a tied array element, this new sv
635 * won't actually be stored in the array - so it won't get
636 * reaped when the localize ends. Ensure it gets reaped by
637 * mortifying it instead. DAPM */
638 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
643 Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr)
647 SSPUSHPTR(SvREFCNT_inc(hv));
648 SSPUSHPTR(SvREFCNT_inc(key));
649 SSPUSHPTR(SvREFCNT_inc(*sptr));
650 SSPUSHINT(SAVEt_HELEM);
651 save_scalar_at(sptr);
653 /* If we're localizing a tied hash element, this new sv
654 * won't actually be stored in the hash - so it won't get
655 * reaped when the localize ends. Ensure it gets reaped by
656 * mortifying it instead. DAPM */
657 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
670 Perl_save_alloc(pTHX_ I32 size, I32 pad)
672 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
673 - (char*)PL_savestack);
674 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
676 /* SSCHECK may not be good enough */
677 while (PL_savestack_ix + elems + 2 > PL_savestack_max)
680 PL_savestack_ix += elems;
682 SSPUSHINT(SAVEt_ALLOC);
687 Perl_leave_scope(pTHX_ I32 base)
699 Perl_croak(aTHX_ "panic: corrupt saved stack index");
700 while (PL_savestack_ix > base) {
702 case SAVEt_ITEM: /* normal string */
703 value = (SV*)SSPOPPTR;
705 sv_replace(sv,value);
710 case SAVEt_SV: /* scalar reference */
711 value = (SV*)SSPOPPTR;
714 av = (AV*)gv; /* what to refcnt_dec */
716 case SAVEt_GENERIC_PVREF: /* generic pv */
717 str = (char*)SSPOPPTR;
719 if (*(char**)ptr != str) {
720 Safefree(*(char**)ptr);
724 case SAVEt_SHARED_PVREF: /* shared pv */
725 str = (char*)SSPOPPTR;
727 if (*(char**)ptr != str) {
729 PerlMem_free(*(char**)ptr);
731 PerlMemShared_free(*(char**)ptr);
736 case SAVEt_GENERIC_SVREF: /* generic sv */
737 value = (SV*)SSPOPPTR;
744 case SAVEt_SVREF: /* scalar reference */
745 value = (SV*)SSPOPPTR;
747 av = Nullav; /* what to refcnt_dec */
750 DEBUG_S(PerlIO_printf(Perl_debug_log,
751 "restore svref: %p %p:%s -> %p:%s\n",
752 ptr, sv, SvPEEK(sv), value, SvPEEK(value)));
753 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
754 SvTYPE(sv) != SVt_PVGV)
756 (void)SvUPGRADE(value, SvTYPE(sv));
757 SvMAGIC_set(value, SvMAGIC(sv));
758 SvFLAGS(value) |= SvMAGICAL(sv);
762 /* XXX This branch is pretty bogus. This code irretrievably
763 * clears(!) the magic on the SV (either to avoid further
764 * croaking that might ensue when the SvSETMAGIC() below is
765 * called, or to avoid two different SVs pointing at the same
766 * SvMAGIC()). This needs a total rethink. --GSAR */
767 else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
768 SvTYPE(value) != SVt_PVGV)
770 SvFLAGS(value) |= (SvFLAGS(value) &
771 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
772 SvMAGICAL_off(value);
773 /* XXX this is a leak when we get here because the
774 * mg_get() in save_scalar_at() croaked */
775 SvMAGIC_set(value, NULL);
783 if (av) /* actually an av, hv or gv */
786 case SAVEt_AV: /* array reference */
790 AV * const goner = GvAV(gv);
791 SvMAGIC_set(av, SvMAGIC(goner));
792 SvFLAGS((SV*)av) |= SvMAGICAL(goner);
793 SvMAGICAL_off(goner);
794 SvMAGIC_set(goner, NULL);
804 case SAVEt_HV: /* hash reference */
808 HV * const goner = GvHV(gv);
809 SvMAGIC_set(hv, SvMAGIC(goner));
810 SvFLAGS(hv) |= SvMAGICAL(goner);
811 SvMAGICAL_off(goner);
812 SvMAGIC_set(goner, NULL);
822 case SAVEt_INT: /* int reference */
824 *(int*)ptr = (int)SSPOPINT;
826 case SAVEt_LONG: /* long reference */
828 *(long*)ptr = (long)SSPOPLONG;
830 case SAVEt_BOOL: /* bool reference */
832 *(bool*)ptr = (bool)SSPOPBOOL;
834 case SAVEt_I32: /* I32 reference */
836 *(I32*)ptr = (I32)SSPOPINT;
838 case SAVEt_I16: /* I16 reference */
840 *(I16*)ptr = (I16)SSPOPINT;
842 case SAVEt_I8: /* I8 reference */
844 *(I8*)ptr = (I8)SSPOPINT;
846 case SAVEt_IV: /* IV reference */
848 *(IV*)ptr = (IV)SSPOPIV;
850 case SAVEt_SPTR: /* SV* reference */
852 *(SV**)ptr = (SV*)SSPOPPTR;
854 case SAVEt_VPTR: /* random* reference */
855 case SAVEt_PPTR: /* char* reference */
857 *(char**)ptr = (char*)SSPOPPTR;
859 case SAVEt_HPTR: /* HV* reference */
861 *(HV**)ptr = (HV*)SSPOPPTR;
863 case SAVEt_APTR: /* AV* reference */
865 *(AV**)ptr = (AV*)SSPOPPTR;
869 (void)sv_clear((SV*)gv);
871 case SAVEt_GP: /* scalar reference */
874 if (SvPVX_const(gv) && SvLEN(gv) > 0) {
875 Safefree(SvPVX_mutable(gv));
877 SvPV_set(gv, (char *)SSPOPPTR);
878 SvCUR_set(gv, (STRLEN)SSPOPIV);
879 SvLEN_set(gv, (STRLEN)SSPOPIV);
883 PL_sub_generation++; /* putting a method back into circulation */
888 SvREFCNT_dec((SV*)ptr);
890 case SAVEt_MORTALIZESV:
892 sv_2mortal((SV*)ptr);
896 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
904 ptr = (void*)&PL_curpad[SSPOPLONG];
907 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
908 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
909 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
910 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
911 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
914 /* Can clear pad variable in place? */
915 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
917 * if a my variable that was made readonly is going out of
918 * scope, we want to remove the readonlyness so that it can
919 * go out of scope quietly
921 if (SvPADMY(sv) && !SvFAKE(sv))
924 if (SvTHINKFIRST(sv))
925 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
929 switch (SvTYPE(sv)) {
939 Perl_croak(aTHX_ "panic: leave_scope pad code");
945 else { /* Someone has a claim on this, so abandon it. */
947 = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP);
948 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
949 case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
950 case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
951 default: *(SV**)ptr = NEWSV(0,0); break;
953 SvREFCNT_dec(sv); /* Cast current value to the winds. */
954 SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */
961 (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
965 case SAVEt_DESTRUCTOR:
969 case SAVEt_DESTRUCTOR_X:
971 (*SSPOPDXPTR)(aTHX_ ptr);
973 case SAVEt_REGCONTEXT:
976 PL_savestack_ix -= i; /* regexp must have croaked */
978 case SAVEt_STACK_POS: /* Position on Perl stack */
980 PL_stack_sp = PL_stack_base + i;
982 case SAVEt_AELEM: /* array element */
983 value = (SV*)SSPOPPTR;
986 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
988 ptr = av_fetch(av,i,1);
991 if (sv && sv != &PL_sv_undef) {
992 if (SvTIED_mg((SV*)av, PERL_MAGIC_tied))
993 (void)SvREFCNT_inc(sv);
1000 case SAVEt_HELEM: /* hash element */
1001 value = (SV*)SSPOPPTR;
1004 ptr = hv_fetch_ent(hv, sv, 1, 0);
1006 const SV * const oval = HeVAL((HE*)ptr);
1007 if (oval && oval != &PL_sv_undef) {
1008 ptr = &HeVAL((HE*)ptr);
1009 if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied))
1010 (void)SvREFCNT_inc(*(SV**)ptr);
1012 av = (AV*)hv; /* what to refcnt_dec */
1018 SvREFCNT_dec(value);
1021 PL_op = (OP*)SSPOPPTR;
1024 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
1025 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
1026 GvHV(PL_hintgv) = NULL;
1028 *(I32*)&PL_hints = (I32)SSPOPINT;
1029 if (PL_hints & HINT_LOCALIZE_HH) {
1030 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
1031 GvHV(PL_hintgv) = (HV*)SSPOPPTR;
1036 PL_comppad = (PAD*)SSPOPPTR;
1038 PL_curpad = AvARRAY(PL_comppad);
1040 PL_curpad = Null(SV**);
1044 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
1047 AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR;
1050 case SAVEt_SAVESWITCHSTACK:
1053 AV* t = (AV*)SSPOPPTR;
1054 AV* f = (AV*)SSPOPPTR;
1056 PL_curstackinfo->si_stack = f;
1060 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
1066 Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
1069 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
1070 if (CxTYPE(cx) != CXt_SUBST) {
1071 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
1072 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1073 PTR2UV(cx->blk_oldcop));
1074 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1075 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
1076 PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
1077 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1078 PTR2UV(cx->blk_oldpm));
1079 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
1081 switch (CxTYPE(cx)) {
1086 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1087 PTR2UV(cx->blk_sub.cv));
1088 PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n",
1089 PTR2UV(cx->blk_sub.gv));
1090 PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n",
1091 PTR2UV(cx->blk_sub.dfoutgv));
1092 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
1093 (int)cx->blk_sub.hasargs);
1096 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1097 PTR2UV(cx->blk_sub.cv));
1098 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
1099 (long)cx->blk_sub.olddepth);
1100 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
1101 (int)cx->blk_sub.hasargs);
1102 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n",
1103 (int)cx->blk_sub.lval);
1106 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
1107 (long)cx->blk_eval.old_in_eval);
1108 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
1109 PL_op_name[cx->blk_eval.old_op_type],
1110 PL_op_desc[cx->blk_eval.old_op_type]);
1111 if (cx->blk_eval.old_namesv)
1112 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
1113 SvPVX_const(cx->blk_eval.old_namesv));
1114 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1115 PTR2UV(cx->blk_eval.old_eval_root));
1119 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
1120 cx->blk_loop.label);
1121 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
1122 (long)cx->blk_loop.resetsp);
1123 PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n",
1124 PTR2UV(cx->blk_loop.redo_op));
1125 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
1126 PTR2UV(cx->blk_loop.next_op));
1127 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n",
1128 PTR2UV(cx->blk_loop.last_op));
1129 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1130 (long)cx->blk_loop.iterix);
1131 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
1132 PTR2UV(cx->blk_loop.iterary));
1133 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1134 PTR2UV(CxITERVAR(cx)));
1136 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n",
1137 PTR2UV(cx->blk_loop.itersave));
1138 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n",
1139 PTR2UV(cx->blk_loop.iterlval));
1143 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
1144 (long)cx->sb_iters);
1145 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
1146 (long)cx->sb_maxiters);
1147 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1148 (long)cx->sb_rflags);
1149 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
1151 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
1153 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1154 PTR2UV(cx->sb_dstr));
1155 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1156 PTR2UV(cx->sb_targ));
1157 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1159 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1161 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1162 PTR2UV(cx->sb_strend));
1163 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1164 PTR2UV(cx->sb_rxres));
1167 #endif /* DEBUGGING */
1172 * c-indentation-style: bsd
1174 * indent-tabs-mode: t
1177 * ex: set ts=8 sts=4 sw=4 noet: