3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 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 PoisonNew(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 PoisonNew(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--] = NULL;
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);
207 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
208 if (SvGMAGICAL(osv)) {
209 const bool oldtainted = PL_tainted;
210 SvFLAGS(osv) |= (SvFLAGS(osv) &
211 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
212 PL_tainted = oldtainted;
214 mg_localize(osv, sv);
220 Perl_save_scalar(pTHX_ GV *gv)
222 SV ** const sptr = &GvSVn(gv);
227 SSPUSHPTR(SvREFCNT_inc_simple(gv));
228 SSPUSHPTR(SvREFCNT_inc(*sptr));
230 return save_scalar_at(sptr);
233 /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
234 * restore a global SV to its prior contents, freeing new value. */
236 Perl_save_generic_svref(pTHX_ SV **sptr)
240 SSPUSHPTR(SvREFCNT_inc(*sptr));
241 SSPUSHINT(SAVEt_GENERIC_SVREF);
244 /* Like save_pptr(), but also Safefree()s the new value if it is different
245 * from the old one. Can be used to restore a global char* to its prior
246 * contents, freeing new value. */
248 Perl_save_generic_pvref(pTHX_ char **str)
253 SSPUSHINT(SAVEt_GENERIC_PVREF);
256 /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
257 * Can be used to restore a shared global char* to its prior
258 * contents, freeing new value. */
260 Perl_save_shared_pvref(pTHX_ char **str)
265 SSPUSHINT(SAVEt_SHARED_PVREF);
269 Perl_save_gp(pTHX_ GV *gv, I32 empty)
272 SSPUSHPTR(SvREFCNT_inc(gv));
274 SSPUSHINT(SAVEt_GP_NEW);
277 GP *gp = Perl_newGP(aTHX_ gv);
280 PL_sub_generation++; /* taking a method out of circulation */
281 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
283 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
294 Perl_save_ary(pTHX_ GV *gv)
296 AV * const oav = GvAVn(gv);
299 if (!AvREAL(oav) && AvREIFY(oav))
309 mg_localize((SV*)oav, (SV*)av);
314 Perl_save_hash(pTHX_ GV *gv)
320 SSPUSHPTR(ohv = GvHVn(gv));
326 mg_localize((SV*)ohv, (SV*)hv);
331 Perl_save_item(pTHX_ register SV *item)
333 register SV * const sv = newSVsv(item);
336 SSPUSHPTR(item); /* remember the pointer */
337 SSPUSHPTR(sv); /* remember the value */
338 SSPUSHINT(SAVEt_ITEM);
342 Perl_save_int(pTHX_ int *intp)
347 SSPUSHINT(SAVEt_INT);
351 Perl_save_bool(pTHX_ bool *boolp)
356 SSPUSHINT(SAVEt_BOOL);
360 Perl_save_I8(pTHX_ I8 *bytep)
369 Perl_save_I32(pTHX_ I32 *intp)
374 SSPUSHINT(SAVEt_I32);
377 /* Cannot use save_sptr() to store a char* since the SV** cast will
378 * force word-alignment and we'll miss the pointer.
381 Perl_save_pptr(pTHX_ char **pptr)
386 SSPUSHINT(SAVEt_PPTR);
390 Perl_save_vptr(pTHX_ void *ptr)
393 SSPUSHPTR(*(char**)ptr);
395 SSPUSHINT(SAVEt_VPTR);
399 Perl_save_sptr(pTHX_ SV **sptr)
404 SSPUSHINT(SAVEt_SPTR);
408 Perl_save_padsv(pTHX_ PADOFFSET off)
411 ASSERT_CURPAD_ACTIVE("save_padsv");
412 SSPUSHPTR(PL_curpad[off]);
413 SSPUSHPTR(PL_comppad);
414 SSPUSHLONG((long)off);
415 SSPUSHINT(SAVEt_PADSV);
419 Perl_save_threadsv(pTHX_ PADOFFSET i)
421 #ifdef USE_5005THREADS
422 SV **svp = &THREADSV(i); /* XXX Change to save by offset */
423 DEBUG_S(PerlIO_printf(Perl_debug_log, "save_threadsv %"UVuf": %p %p:%s\n",
424 (UV)i, svp, *svp, SvPEEK(*svp)));
428 Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl");
430 NORETURN_FUNCTION_END;
431 #endif /* USE_5005THREADS */
435 Perl_save_hptr(pTHX_ HV **hptr)
440 SSPUSHINT(SAVEt_HPTR);
444 Perl_save_aptr(pTHX_ AV **aptr)
449 SSPUSHINT(SAVEt_APTR);
453 Perl_save_freesv(pTHX_ SV *sv)
457 SSPUSHINT(SAVEt_FREESV);
461 Perl_save_mortalizesv(pTHX_ SV *sv)
465 SSPUSHINT(SAVEt_MORTALIZESV);
469 Perl_save_freeop(pTHX_ OP *o)
473 SSPUSHINT(SAVEt_FREEOP);
477 Perl_save_freepv(pTHX_ char *pv)
481 SSPUSHINT(SAVEt_FREEPV);
485 Perl_save_clearsv(pTHX_ SV **svp)
487 ASSERT_CURPAD_ACTIVE("save_clearsv");
489 SSPUSHLONG((long)(svp-PL_curpad));
490 SSPUSHINT(SAVEt_CLEARSV);
494 Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
499 SSPUSHPTR(SvREFCNT_inc_simple(hv));
500 SSPUSHINT(SAVEt_DELETE);
504 Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
509 SSPUSHINT(SAVEt_DESTRUCTOR);
513 Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
518 SSPUSHINT(SAVEt_DESTRUCTOR_X);
522 Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr)
527 SSPUSHPTR(SvREFCNT_inc_simple(av));
529 SSPUSHPTR(SvREFCNT_inc(*sptr));
530 SSPUSHINT(SAVEt_AELEM);
531 /* if it gets reified later, the restore will have the wrong refcnt */
532 if (!AvREAL(av) && AvREIFY(av))
533 SvREFCNT_inc_void(*sptr);
534 save_scalar_at(sptr);
536 /* If we're localizing a tied array element, this new sv
537 * won't actually be stored in the array - so it won't get
538 * reaped when the localize ends. Ensure it gets reaped by
539 * mortifying it instead. DAPM */
540 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
545 Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr)
550 SSPUSHPTR(SvREFCNT_inc_simple(hv));
551 SSPUSHPTR(SvREFCNT_inc_simple(key));
552 SSPUSHPTR(SvREFCNT_inc(*sptr));
553 SSPUSHINT(SAVEt_HELEM);
554 save_scalar_at(sptr);
556 /* If we're localizing a tied hash element, this new sv
557 * won't actually be stored in the hash - so it won't get
558 * reaped when the localize ends. Ensure it gets reaped by
559 * mortifying it instead. DAPM */
560 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
565 Perl_save_svref(pTHX_ SV **sptr)
570 SSPUSHPTR(SvREFCNT_inc(*sptr));
571 SSPUSHINT(SAVEt_SVREF);
572 return save_scalar_at(sptr);
584 Perl_save_alloc(pTHX_ I32 size, I32 pad)
586 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
587 - (char*)PL_savestack);
588 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
592 PL_savestack_ix += elems;
594 SSPUSHINT(SAVEt_ALLOC);
599 Perl_leave_scope(pTHX_ I32 base)
611 Perl_croak(aTHX_ "panic: corrupt saved stack index");
612 while (PL_savestack_ix > base) {
613 const int type = SSPOPINT;
615 case SAVEt_ITEM: /* normal string */
616 value = (SV*)SSPOPPTR;
618 sv_replace(sv,value);
623 case SAVEt_SV: /* scalar reference */
624 value = (SV*)SSPOPPTR;
627 av = (AV*)gv; /* what to refcnt_dec */
630 DEBUG_S(PerlIO_printf(Perl_debug_log,
631 "restore svref: %p %p:%s -> %p:%s\n",
632 ptr, sv, SvPEEK(sv), value, SvPEEK(value)));
639 if (av) /* actually an av, hv or gv */
642 case SAVEt_GENERIC_PVREF: /* generic pv */
643 str = (char*)SSPOPPTR;
645 if (*(char**)ptr != str) {
646 Safefree(*(char**)ptr);
650 case SAVEt_SHARED_PVREF: /* shared pv */
651 str = (char*)SSPOPPTR;
653 if (*(char**)ptr != str) {
655 PerlMem_free(*(char**)ptr);
657 PerlMemShared_free(*(char**)ptr);
662 case SAVEt_GENERIC_SVREF: /* generic sv */
663 value = (SV*)SSPOPPTR;
670 case SAVEt_AV: /* array reference */
674 AV * const goner = GvAV(gv);
675 SvMAGIC_set(av, SvMAGIC(goner));
676 SvFLAGS((SV*)av) |= SvMAGICAL(goner);
677 SvMAGICAL_off(goner);
678 SvMAGIC_set(goner, NULL);
688 case SAVEt_HV: /* hash reference */
692 HV * const goner = GvHV(gv);
693 SvMAGIC_set(hv, SvMAGIC(goner));
694 SvFLAGS(hv) |= SvMAGICAL(goner);
695 SvMAGICAL_off(goner);
696 SvMAGIC_set(goner, NULL);
706 case SAVEt_INT: /* int reference */
708 *(int*)ptr = (int)SSPOPINT;
710 case SAVEt_BOOL: /* bool reference */
712 *(bool*)ptr = (bool)SSPOPBOOL;
714 case SAVEt_I32: /* I32 reference */
716 *(I32*)ptr = (I32)SSPOPINT;
718 case SAVEt_SPTR: /* SV* reference */
720 *(SV**)ptr = (SV*)SSPOPPTR;
722 case SAVEt_VPTR: /* random* reference */
723 case SAVEt_PPTR: /* char* reference */
725 *(char**)ptr = (char*)SSPOPPTR;
727 case SAVEt_HPTR: /* HV* reference */
729 *(HV**)ptr = (HV*)SSPOPPTR;
731 case SAVEt_APTR: /* AV* reference */
733 *(AV**)ptr = (AV*)SSPOPPTR;
735 case SAVEt_GP_OLD: /* scalar reference */
736 case SAVEt_GP_NEW: /* scalar reference */
739 if (SvPVX_const(gv) && SvLEN(gv) > 0) {
740 Safefree(SvPVX_mutable(gv));
742 if (type == SAVEt_GP_NEW) {
748 SvPV_set(gv, (char *)SSPOPPTR);
749 SvCUR_set(gv, (STRLEN)SSPOPIV);
750 SvLEN_set(gv, (STRLEN)SSPOPIV);
755 PL_sub_generation++; /* putting a method back into circulation */
760 SvREFCNT_dec((SV*)ptr);
762 case SAVEt_MORTALIZESV:
764 sv_2mortal((SV*)ptr);
768 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
776 ptr = (void*)&PL_curpad[SSPOPLONG];
779 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
780 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
781 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
782 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
783 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
786 /* Can clear pad variable in place? */
787 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
789 * if a my variable that was made readonly is going out of
790 * scope, we want to remove the readonlyness so that it can
791 * go out of scope quietly
793 if (SvPADMY(sv) && !SvFAKE(sv))
796 if (SvTHINKFIRST(sv))
797 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
801 switch (SvTYPE(sv)) {
806 /* Need to detach $#array from @array that has just gone
807 out of scope. Otherwise the first $#array controls the
808 size of the array "newly" created the next time this
812 MAGIC *mg = mg_find (AvARYLEN(sv), PERL_MAGIC_arylen);
818 SvREFCNT_dec(AvARYLEN(sv));
826 Perl_croak(aTHX_ "panic: leave_scope pad code");
832 else { /* Someone has a claim on this, so abandon it. */
834 = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP);
835 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
836 case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
837 case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
838 default: *(SV**)ptr = newSV(0); break;
840 SvREFCNT_dec(sv); /* Cast current value to the winds. */
841 SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */
848 (void)hv_delete(hv, (char*)ptr, (I32)SSPOPINT, G_DISCARD);
852 case SAVEt_DESTRUCTOR_X:
854 (*SSPOPDXPTR)(aTHX_ ptr);
856 case SAVEt_REGCONTEXT:
859 PL_savestack_ix -= i; /* regexp must have croaked */
861 case SAVEt_STACK_POS: /* Position on Perl stack */
863 PL_stack_sp = PL_stack_base + i;
865 case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */
867 cxstack[i].blk_oldsp = SSPOPINT;
869 case SAVEt_AELEM: /* array element */
870 value = (SV*)SSPOPPTR;
873 ptr = av_fetch(av,i,1);
874 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
878 if (sv && sv != &PL_sv_undef) {
879 if (SvTIED_mg((SV*)av, PERL_MAGIC_tied))
880 SvREFCNT_inc_void_NN(sv);
887 case SAVEt_HELEM: /* hash element */
888 value = (SV*)SSPOPPTR;
891 ptr = hv_fetch_ent(hv, sv, 1, 0);
893 const SV * const oval = HeVAL((HE*)ptr);
894 if (oval && oval != &PL_sv_undef) {
895 ptr = &HeVAL((HE*)ptr);
896 if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied))
897 SvREFCNT_inc_void(*(SV**)ptr);
899 av = (AV*)hv; /* what to refcnt_dec */
908 PL_op = (OP*)SSPOPPTR;
911 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
912 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
913 GvHV(PL_hintgv) = NULL;
915 *(I32*)&PL_hints = (I32)SSPOPINT;
916 if (PL_hints & HINT_LOCALIZE_HH) {
917 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
918 GvHV(PL_hintgv) = (HV*)SSPOPPTR;
923 PL_comppad = (PAD*)SSPOPPTR;
925 PL_curpad = AvARRAY(PL_comppad);
931 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
934 AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR;
937 case SAVEt_SAVESWITCHSTACK:
940 AV* const t = (AV*)SSPOPPTR;
941 AV* const f = (AV*)SSPOPPTR;
943 PL_curstackinfo->si_stack = f;
946 /* These are only saved in mathoms.c */
947 case SAVEt_SVREF: /* scalar reference */
948 value = (SV*)SSPOPPTR;
950 av = NULL; /* what to refcnt_dec */
952 case SAVEt_LONG: /* long reference */
954 *(long*)ptr = (long)SSPOPLONG;
956 case SAVEt_I16: /* I16 reference */
958 *(I16*)ptr = (I16)SSPOPINT;
960 case SAVEt_I8: /* I8 reference */
962 *(I8*)ptr = (I8)SSPOPINT;
964 case SAVEt_IV: /* IV reference */
966 *(IV*)ptr = (IV)SSPOPIV;
970 (void)sv_clear((SV*)gv);
972 case SAVEt_DESTRUCTOR:
976 case SAVEt_COP_ARYBASE:
979 CopARYBASE_set((COP *)ptr, i);
983 const struct re_save_state *const state
984 = (struct re_save_state *)
985 (PL_savestack + PL_savestack_ix
986 - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE);
987 PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE;
989 PL_reg_flags = state->re_state_reg_flags;
990 PL_bostr = state->re_state_bostr;
991 PL_reginput = state->re_state_reginput;
992 PL_regbol = state->re_state_regbol;
993 PL_regeol = state->re_state_regeol;
994 PL_regstartp = state->re_state_regstartp;
995 PL_regendp = state->re_state_regendp;
996 PL_reglastparen = state->re_state_reglastparen;
997 PL_reglastcloseparen = state->re_state_reglastcloseparen;
998 PL_regtill = state->re_state_regtill;
999 if (PL_reg_start_tmp != state->re_state_reg_start_tmp) {
1000 Safefree(PL_reg_start_tmp);
1001 PL_reg_start_tmp = state->re_state_reg_start_tmp;
1003 PL_reg_start_tmpl = state->re_state_reg_start_tmpl;
1004 PL_reg_eval_set = state->re_state_reg_eval_set;
1005 PL_regnarrate = state->re_state_regnarrate;
1006 PL_regindent = state->re_state_regindent;
1007 PL_reg_call_cc = state->re_state_reg_call_cc;
1008 PL_reg_re = state->re_state_reg_re;
1009 PL_reg_ganch = state->re_state_reg_ganch;
1010 PL_reg_sv = state->re_state_reg_sv;
1011 PL_reg_match_utf8 = state->re_state_reg_match_utf8;
1012 PL_reg_magic = state->re_state_reg_magic;
1013 PL_reg_oldpos = state->re_state_reg_oldpos;
1014 PL_reg_oldcurpm = state->re_state_reg_oldcurpm;
1015 PL_reg_curpm = state->re_state_reg_curpm;
1016 PL_reg_oldsaved = state->re_state_reg_oldsaved;
1017 PL_reg_oldsavedlen = state->re_state_reg_oldsavedlen;
1018 PL_reg_maxiter = state->re_state_reg_maxiter;
1019 PL_reg_leftiter = state->re_state_reg_leftiter;
1020 if (PL_reg_poscache != state->re_state_reg_poscache) {
1021 Safefree(PL_reg_poscache);
1022 PL_reg_poscache = state->re_state_reg_poscache;
1024 PL_reg_poscache_size = state->re_state_reg_poscache_size;
1025 PL_regsize = state->re_state_regsize;
1026 PL_reg_starttry = state->re_state_reg_starttry;
1028 /* These variables have been eliminated from 5.10: */
1029 PL_regdata = state->re_state_regdata;
1030 PL_regprogram = state->re_state_regprogram;
1031 PL_regcc = state->re_state_regcc;
1032 PL_regprecomp = state->re_state_regprecomp;
1033 PL_regnpar = state->re_state_regnpar;
1037 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
1043 Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
1046 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
1047 if (CxTYPE(cx) != CXt_SUBST) {
1048 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
1049 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1050 PTR2UV(cx->blk_oldcop));
1051 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1052 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
1053 PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
1054 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1055 PTR2UV(cx->blk_oldpm));
1056 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
1058 switch (CxTYPE(cx)) {
1063 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1064 PTR2UV(cx->blk_sub.cv));
1065 PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n",
1066 PTR2UV(cx->blk_sub.gv));
1067 PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n",
1068 PTR2UV(cx->blk_sub.dfoutgv));
1069 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
1070 (int)cx->blk_sub.hasargs);
1073 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1074 PTR2UV(cx->blk_sub.cv));
1075 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
1076 (long)cx->blk_sub.olddepth);
1077 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
1078 (int)cx->blk_sub.hasargs);
1079 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n",
1080 (int)cx->blk_sub.lval);
1083 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
1084 (long)cx->blk_eval.old_in_eval);
1085 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
1086 PL_op_name[cx->blk_eval.old_op_type],
1087 PL_op_desc[cx->blk_eval.old_op_type]);
1088 if (cx->blk_eval.old_namesv)
1089 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
1090 SvPVX_const(cx->blk_eval.old_namesv));
1091 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1092 PTR2UV(cx->blk_eval.old_eval_root));
1096 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
1097 cx->blk_loop.label);
1098 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
1099 (long)cx->blk_loop.resetsp);
1100 PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n",
1101 PTR2UV(cx->blk_loop.redo_op));
1102 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
1103 PTR2UV(cx->blk_loop.next_op));
1104 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n",
1105 PTR2UV(cx->blk_loop.last_op));
1106 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1107 (long)cx->blk_loop.iterix);
1108 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
1109 PTR2UV(cx->blk_loop.iterary));
1110 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1111 PTR2UV(CxITERVAR(cx)));
1113 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n",
1114 PTR2UV(cx->blk_loop.itersave));
1115 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n",
1116 PTR2UV(cx->blk_loop.iterlval));
1120 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
1121 (long)cx->sb_iters);
1122 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
1123 (long)cx->sb_maxiters);
1124 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1125 (long)cx->sb_rflags);
1126 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
1128 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
1130 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1131 PTR2UV(cx->sb_dstr));
1132 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1133 PTR2UV(cx->sb_targ));
1134 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1136 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1138 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1139 PTR2UV(cx->sb_strend));
1140 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1141 PTR2UV(cx->sb_rxres));
1145 PERL_UNUSED_CONTEXT;
1146 PERL_UNUSED_ARG(cx);
1147 #endif /* DEBUGGING */
1152 * c-indentation-style: bsd
1154 * indent-tabs-mode: t
1157 * ex: set ts=8 sts=4 sw=4 noet: