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
28 Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
31 #ifndef STRESS_REALLOC
32 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
34 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1);
39 #ifndef STRESS_REALLOC
40 #define GROW(old) ((old) * 3 / 2)
42 #define GROW(old) ((old) + 1)
46 Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
49 New(56, si, 1, PERL_SI);
50 si->si_stack = newAV();
51 AvREAL_off(si->si_stack);
52 av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
53 AvALLOC(si->si_stack)[0] = &PL_sv_undef;
54 AvFILLp(si->si_stack) = 0;
57 si->si_cxmax = cxitems - 1;
59 si->si_type = PERLSI_UNDEF;
60 New(56, si->si_cxstack, cxitems, PERL_CONTEXT);
61 /* Without any kind of initialising PUSHSUBST()
62 * in pp_subst() will read uninitialised heap. */
63 Poison(si->si_cxstack, cxitems, PERL_CONTEXT);
70 IV old_max = cxstack_max;
71 cxstack_max = GROW(cxstack_max);
72 Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */
73 /* Without any kind of initialising deep enough recursion
74 * will end up reading uninitialised PERL_CONTEXTs. */
75 Poison(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT);
76 return cxstack_ix + 1;
82 if (PL_scopestack_ix == PL_scopestack_max) {
83 PL_scopestack_max = GROW(PL_scopestack_max);
84 Renew(PL_scopestack, PL_scopestack_max, I32);
86 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
93 I32 oldsave = PL_scopestack[--PL_scopestack_ix];
98 Perl_markstack_grow(pTHX)
100 I32 oldmax = PL_markstack_max - PL_markstack;
101 I32 newmax = GROW(oldmax);
103 Renew(PL_markstack, newmax, I32);
104 PL_markstack_ptr = PL_markstack + oldmax;
105 PL_markstack_max = PL_markstack + newmax;
109 Perl_savestack_grow(pTHX)
111 PL_savestack_max = GROW(PL_savestack_max) + 4;
112 Renew(PL_savestack, PL_savestack_max, ANY);
116 Perl_savestack_grow_cnt(pTHX_ I32 need)
118 PL_savestack_max = PL_savestack_ix + need;
119 Renew(PL_savestack, PL_savestack_max, ANY);
125 Perl_tmps_grow(pTHX_ I32 n)
127 #ifndef STRESS_REALLOC
129 n = (PL_tmps_max < 512) ? 128 : 512;
131 PL_tmps_max = PL_tmps_ix + n + 1;
132 Renew(PL_tmps_stack, PL_tmps_max, SV*);
139 /* XXX should tmps_floor live in cxstack? */
140 I32 myfloor = PL_tmps_floor;
141 while (PL_tmps_ix > myfloor) { /* clean up after last statement */
142 SV* sv = PL_tmps_stack[PL_tmps_ix];
143 PL_tmps_stack[PL_tmps_ix--] = Nullsv;
144 if (sv && sv != &PL_sv_undef) {
146 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
152 S_save_scalar_at(pTHX_ SV **sptr)
157 sv = *sptr = NEWSV(0,0);
158 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
160 sv_upgrade(sv, SvTYPE(osv));
161 if (SvGMAGICAL(osv)) {
162 bool oldtainted = PL_tainted;
163 mg_get(osv); /* note, can croak! */
164 if (PL_tainting && PL_tainted &&
165 (mg = mg_find(osv, PERL_MAGIC_taint))) {
166 SAVESPTR(mg->mg_obj);
169 SvFLAGS(osv) |= (SvFLAGS(osv) &
170 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
171 PL_tainted = oldtainted;
173 SvMAGIC(sv) = SvMAGIC(osv);
174 /* if it's a special scalar or if it has no 'set' magic,
175 * propagate the SvREADONLY flag. --rgs 20030922 */
176 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
177 if (mg->mg_type == '\0'
178 || !(mg->mg_virtual && mg->mg_virtual->svt_set))
180 SvFLAGS(sv) |= SvREADONLY(osv);
184 SvFLAGS(sv) |= SvMAGICAL(osv);
185 /* XXX SvMAGIC() is *shared* between osv and sv. This can
186 * lead to coredumps when both SVs are destroyed without one
187 * of their SvMAGIC() slots being NULLed. */
196 Perl_save_scalar(pTHX_ GV *gv)
198 SV **sptr = &GvSV(gv);
200 SSPUSHPTR(SvREFCNT_inc(gv));
201 SSPUSHPTR(SvREFCNT_inc(*sptr));
203 return save_scalar_at(sptr);
207 Perl_save_svref(pTHX_ SV **sptr)
211 SSPUSHPTR(SvREFCNT_inc(*sptr));
212 SSPUSHINT(SAVEt_SVREF);
213 return save_scalar_at(sptr);
216 /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
217 * restore a global SV to its prior contents, freeing new value. */
219 Perl_save_generic_svref(pTHX_ SV **sptr)
223 SSPUSHPTR(SvREFCNT_inc(*sptr));
224 SSPUSHINT(SAVEt_GENERIC_SVREF);
227 /* Like save_pptr(), but also Safefree()s the new value if it is different
228 * from the old one. Can be used to restore a global char* to its prior
229 * contents, freeing new value. */
231 Perl_save_generic_pvref(pTHX_ char **str)
236 SSPUSHINT(SAVEt_GENERIC_PVREF);
239 /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
240 * Can be used to restore a shared global char* to its prior
241 * contents, freeing new value. */
243 Perl_save_shared_pvref(pTHX_ char **str)
248 SSPUSHINT(SAVEt_SHARED_PVREF);
251 /* set the SvFLAGS specified by mask to the values in val */
254 Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
260 SSPUSHINT(SAVEt_SET_SVFLAGS);
264 Perl_save_gp(pTHX_ GV *gv, I32 empty)
267 SSPUSHIV((IV)SvLEN(gv));
268 SvLEN(gv) = 0; /* forget that anything was allocated here */
269 SSPUSHIV((IV)SvCUR(gv));
270 SSPUSHPTR(SvPVX(gv));
272 SSPUSHPTR(SvREFCNT_inc(gv));
279 Newz(602, gp, 1, GP);
282 PL_sub_generation++; /* taking a method out of circulation */
283 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
285 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
287 GvGP(gv) = gp_ref(gp);
288 GvSV(gv) = NEWSV(72,0);
289 GvLINE(gv) = CopLINE(PL_curcop);
290 GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : "";
300 Perl_save_ary(pTHX_ GV *gv)
305 if (!AvREAL(oav) && AvREIFY(oav))
312 GvAV(gv) = Null(AV*);
315 SvMAGIC(av) = SvMAGIC(oav);
316 SvFLAGS((SV*)av) |= SvMAGICAL(oav);
327 Perl_save_hash(pTHX_ GV *gv)
333 SSPUSHPTR(ohv = GvHVn(gv));
336 GvHV(gv) = Null(HV*);
339 SvMAGIC(hv) = SvMAGIC(ohv);
340 SvFLAGS((SV*)hv) |= SvMAGICAL(ohv);
351 Perl_save_item(pTHX_ register SV *item)
353 register SV *sv = newSVsv(item);
356 SSPUSHPTR(item); /* remember the pointer */
357 SSPUSHPTR(sv); /* remember the value */
358 SSPUSHINT(SAVEt_ITEM);
362 Perl_save_int(pTHX_ int *intp)
367 SSPUSHINT(SAVEt_INT);
371 Perl_save_long(pTHX_ long int *longp)
376 SSPUSHINT(SAVEt_LONG);
380 Perl_save_bool(pTHX_ bool *boolp)
385 SSPUSHINT(SAVEt_BOOL);
389 Perl_save_I32(pTHX_ I32 *intp)
394 SSPUSHINT(SAVEt_I32);
398 Perl_save_I16(pTHX_ I16 *intp)
403 SSPUSHINT(SAVEt_I16);
407 Perl_save_I8(pTHX_ I8 *bytep)
416 Perl_save_iv(pTHX_ IV *ivp)
424 /* Cannot use save_sptr() to store a char* since the SV** cast will
425 * force word-alignment and we'll miss the pointer.
428 Perl_save_pptr(pTHX_ char **pptr)
433 SSPUSHINT(SAVEt_PPTR);
437 Perl_save_vptr(pTHX_ void *ptr)
440 SSPUSHPTR(*(char**)ptr);
442 SSPUSHINT(SAVEt_VPTR);
446 Perl_save_sptr(pTHX_ SV **sptr)
451 SSPUSHINT(SAVEt_SPTR);
455 Perl_save_padsv(pTHX_ PADOFFSET off)
458 ASSERT_CURPAD_ACTIVE("save_padsv");
459 SSPUSHPTR(PL_curpad[off]);
460 SSPUSHPTR(PL_comppad);
461 SSPUSHLONG((long)off);
462 SSPUSHINT(SAVEt_PADSV);
466 Perl_save_threadsv(pTHX_ PADOFFSET i)
468 Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl");
473 Perl_save_nogv(pTHX_ GV *gv)
477 SSPUSHINT(SAVEt_NSTAB);
481 Perl_save_hptr(pTHX_ HV **hptr)
486 SSPUSHINT(SAVEt_HPTR);
490 Perl_save_aptr(pTHX_ AV **aptr)
495 SSPUSHINT(SAVEt_APTR);
499 Perl_save_freesv(pTHX_ SV *sv)
503 SSPUSHINT(SAVEt_FREESV);
507 Perl_save_mortalizesv(pTHX_ SV *sv)
511 SSPUSHINT(SAVEt_MORTALIZESV);
515 Perl_save_freeop(pTHX_ OP *o)
519 SSPUSHINT(SAVEt_FREEOP);
523 Perl_save_freepv(pTHX_ char *pv)
527 SSPUSHINT(SAVEt_FREEPV);
531 Perl_save_clearsv(pTHX_ SV **svp)
533 ASSERT_CURPAD_ACTIVE("save_clearsv");
535 SSPUSHLONG((long)(svp-PL_curpad));
536 SSPUSHINT(SAVEt_CLEARSV);
537 SvPADSTALE_off(*svp); /* mark lexical as active */
541 Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
546 SSPUSHPTR(SvREFCNT_inc(hv));
547 SSPUSHINT(SAVEt_DELETE);
551 Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg)
556 for (i = 1; i <= maxsarg; i++) {
558 sv_setsv(sv,sarg[i]);
560 SSPUSHPTR(sarg[i]); /* remember the pointer */
561 SSPUSHPTR(sv); /* remember the value */
562 SSPUSHINT(SAVEt_ITEM);
567 Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
572 SSPUSHINT(SAVEt_DESTRUCTOR);
576 Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
581 SSPUSHINT(SAVEt_DESTRUCTOR_X);
585 Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr)
589 SSPUSHPTR(SvREFCNT_inc(av));
591 SSPUSHPTR(SvREFCNT_inc(*sptr));
592 SSPUSHINT(SAVEt_AELEM);
593 /* if it gets reified later, the restore will have the wrong refcnt */
594 if (!AvREAL(av) && AvREIFY(av))
596 save_scalar_at(sptr);
598 /* If we're localizing a tied array element, this new sv
599 * won't actually be stored in the array - so it won't get
600 * reaped when the localize ends. Ensure it gets reaped by
601 * mortifying it instead. DAPM */
602 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
607 Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr)
611 SSPUSHPTR(SvREFCNT_inc(hv));
612 SSPUSHPTR(SvREFCNT_inc(key));
613 SSPUSHPTR(SvREFCNT_inc(*sptr));
614 SSPUSHINT(SAVEt_HELEM);
615 save_scalar_at(sptr);
617 /* If we're localizing a tied hash element, this new sv
618 * won't actually be stored in the hash - so it won't get
619 * reaped when the localize ends. Ensure it gets reaped by
620 * mortifying it instead. DAPM */
621 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
634 Perl_save_alloc(pTHX_ I32 size, I32 pad)
636 register I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
637 - (char*)PL_savestack);
638 register I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
640 /* SSCHECK may not be good enough */
641 while (PL_savestack_ix + elems + 2 > PL_savestack_max)
644 PL_savestack_ix += elems;
646 SSPUSHINT(SAVEt_ALLOC);
651 Perl_leave_scope(pTHX_ I32 base)
663 Perl_croak(aTHX_ "panic: corrupt saved stack index");
664 while (PL_savestack_ix > base) {
666 case SAVEt_ITEM: /* normal string */
667 value = (SV*)SSPOPPTR;
669 sv_replace(sv,value);
674 case SAVEt_SV: /* scalar reference */
675 value = (SV*)SSPOPPTR;
678 av = (AV*)gv; /* what to refcnt_dec */
680 case SAVEt_GENERIC_PVREF: /* generic pv */
681 str = (char*)SSPOPPTR;
683 if (*(char**)ptr != str) {
684 Safefree(*(char**)ptr);
688 case SAVEt_SHARED_PVREF: /* shared pv */
689 str = (char*)SSPOPPTR;
691 if (*(char**)ptr != str) {
693 PerlMem_free(*(char**)ptr);
695 PerlMemShared_free(*(char**)ptr);
700 case SAVEt_GENERIC_SVREF: /* generic sv */
701 value = (SV*)SSPOPPTR;
708 case SAVEt_SVREF: /* scalar reference */
709 value = (SV*)SSPOPPTR;
711 av = Nullav; /* what to refcnt_dec */
714 DEBUG_S(PerlIO_printf(Perl_debug_log,
715 "restore svref: %p %p:%s -> %p:%s\n",
716 ptr, sv, SvPEEK(sv), value, SvPEEK(value)));
717 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
718 SvTYPE(sv) != SVt_PVGV)
720 (void)SvUPGRADE(value, SvTYPE(sv));
721 SvMAGIC(value) = SvMAGIC(sv);
722 SvFLAGS(value) |= SvMAGICAL(sv);
726 /* XXX This branch is pretty bogus. This code irretrievably
727 * clears(!) the magic on the SV (either to avoid further
728 * croaking that might ensue when the SvSETMAGIC() below is
729 * called, or to avoid two different SVs pointing at the same
730 * SvMAGIC()). This needs a total rethink. --GSAR */
731 else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
732 SvTYPE(value) != SVt_PVGV)
734 SvFLAGS(value) |= (SvFLAGS(value) &
735 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
736 SvMAGICAL_off(value);
737 /* XXX this is a leak when we get here because the
738 * mg_get() in save_scalar_at() croaked */
747 if (av) /* actually an av, hv or gv */
750 case SAVEt_AV: /* array reference */
754 AV *goner = GvAV(gv);
755 SvMAGIC(av) = SvMAGIC(goner);
756 SvFLAGS((SV*)av) |= SvMAGICAL(goner);
757 SvMAGICAL_off(goner);
768 case SAVEt_HV: /* hash reference */
772 HV *goner = GvHV(gv);
773 SvMAGIC(hv) = SvMAGIC(goner);
774 SvFLAGS(hv) |= SvMAGICAL(goner);
775 SvMAGICAL_off(goner);
786 case SAVEt_INT: /* int reference */
788 *(int*)ptr = (int)SSPOPINT;
790 case SAVEt_LONG: /* long reference */
792 *(long*)ptr = (long)SSPOPLONG;
794 case SAVEt_BOOL: /* bool reference */
796 *(bool*)ptr = (bool)SSPOPBOOL;
798 case SAVEt_I32: /* I32 reference */
800 *(I32*)ptr = (I32)SSPOPINT;
802 case SAVEt_I16: /* I16 reference */
804 *(I16*)ptr = (I16)SSPOPINT;
806 case SAVEt_I8: /* I8 reference */
808 *(I8*)ptr = (I8)SSPOPINT;
810 case SAVEt_IV: /* IV reference */
812 *(IV*)ptr = (IV)SSPOPIV;
814 case SAVEt_SPTR: /* SV* reference */
816 *(SV**)ptr = (SV*)SSPOPPTR;
818 case SAVEt_VPTR: /* random* reference */
819 case SAVEt_PPTR: /* char* reference */
821 *(char**)ptr = (char*)SSPOPPTR;
823 case SAVEt_HPTR: /* HV* reference */
825 *(HV**)ptr = (HV*)SSPOPPTR;
827 case SAVEt_APTR: /* AV* reference */
829 *(AV**)ptr = (AV*)SSPOPPTR;
833 (void)sv_clear((SV*)gv);
835 case SAVEt_GP: /* scalar reference */
838 if (SvPVX(gv) && SvLEN(gv) > 0) {
841 SvPVX(gv) = (char *)SSPOPPTR;
842 SvCUR(gv) = (STRLEN)SSPOPIV;
843 SvLEN(gv) = (STRLEN)SSPOPIV;
847 PL_sub_generation++; /* putting a method back into circulation */
852 SvREFCNT_dec((SV*)ptr);
854 case SAVEt_MORTALIZESV:
856 sv_2mortal((SV*)ptr);
860 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
865 Safefree((char*)ptr);
868 ptr = (void*)&PL_curpad[SSPOPLONG];
871 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
872 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
873 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
874 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
875 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
878 /* Can clear pad variable in place? */
879 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
881 * if a my variable that was made readonly is going out of
882 * scope, we want to remove the readonlyness so that it can
883 * go out of scope quietly
885 if (SvPADMY(sv) && !SvFAKE(sv))
888 if (SvTHINKFIRST(sv))
889 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
893 switch (SvTYPE(sv)) {
903 Perl_croak(aTHX_ "panic: leave_scope pad code");
908 SvPADSTALE_on(sv); /* mark as no longer live */
910 else { /* Someone has a claim on this, so abandon it. */
911 U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
912 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
913 case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
914 case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
915 default: *(SV**)ptr = NEWSV(0,0); break;
917 SvREFCNT_dec(sv); /* Cast current value to the winds. */
918 /* preserve pad nature, but also mark as not live
919 * for any closure capturing */
920 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
927 (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
931 case SAVEt_DESTRUCTOR:
935 case SAVEt_DESTRUCTOR_X:
937 (*SSPOPDXPTR)(aTHX_ ptr);
939 case SAVEt_REGCONTEXT:
942 PL_savestack_ix -= i; /* regexp must have croaked */
944 case SAVEt_STACK_POS: /* Position on Perl stack */
946 PL_stack_sp = PL_stack_base + i;
948 case SAVEt_AELEM: /* array element */
949 value = (SV*)SSPOPPTR;
952 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
954 ptr = av_fetch(av,i,1);
957 if (sv && sv != &PL_sv_undef) {
958 if (SvTIED_mg((SV*)av, PERL_MAGIC_tied))
959 (void)SvREFCNT_inc(sv);
966 case SAVEt_HELEM: /* hash element */
967 value = (SV*)SSPOPPTR;
970 ptr = hv_fetch_ent(hv, sv, 1, 0);
972 SV *oval = HeVAL((HE*)ptr);
973 if (oval && oval != &PL_sv_undef) {
974 ptr = &HeVAL((HE*)ptr);
975 if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied))
976 (void)SvREFCNT_inc(*(SV**)ptr);
978 av = (AV*)hv; /* what to refcnt_dec */
987 PL_op = (OP*)SSPOPPTR;
990 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
991 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
992 GvHV(PL_hintgv) = NULL;
994 *(I32*)&PL_hints = (I32)SSPOPINT;
995 if (PL_hints & HINT_LOCALIZE_HH) {
996 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
997 GvHV(PL_hintgv) = (HV*)SSPOPPTR;
1002 PL_comppad = (PAD*)SSPOPPTR;
1004 PL_curpad = AvARRAY(PL_comppad);
1006 PL_curpad = Null(SV**);
1010 PADOFFSET off = (PADOFFSET)SSPOPLONG;
1013 AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR;
1016 case SAVEt_SAVESWITCHSTACK:
1019 AV* t = (AV*)SSPOPPTR;
1020 AV* f = (AV*)SSPOPPTR;
1022 PL_curstackinfo->si_stack = f;
1025 case SAVEt_SET_SVFLAGS:
1027 U32 val = (U32)SSPOPINT;
1028 U32 mask = (U32)SSPOPINT;
1030 SvFLAGS(sv) &= ~mask;
1035 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
1041 Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
1044 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
1045 if (CxTYPE(cx) != CXt_SUBST) {
1046 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
1047 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1048 PTR2UV(cx->blk_oldcop));
1049 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1050 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
1051 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1052 PTR2UV(cx->blk_oldpm));
1053 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
1055 switch (CxTYPE(cx)) {
1060 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1061 PTR2UV(cx->blk_sub.cv));
1062 PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n",
1063 PTR2UV(cx->blk_sub.gv));
1064 PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n",
1065 PTR2UV(cx->blk_sub.dfoutgv));
1066 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
1067 (int)cx->blk_sub.hasargs);
1068 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1069 PTR2UV(cx->blk_sub.retop));
1072 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1073 PTR2UV(cx->blk_sub.cv));
1074 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
1075 (long)cx->blk_sub.olddepth);
1076 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
1077 (int)cx->blk_sub.hasargs);
1078 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n",
1079 (int)cx->blk_sub.lval);
1080 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1081 PTR2UV(cx->blk_sub.retop));
1084 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
1085 (long)cx->blk_eval.old_in_eval);
1086 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
1087 PL_op_name[cx->blk_eval.old_op_type],
1088 PL_op_desc[cx->blk_eval.old_op_type]);
1089 if (cx->blk_eval.old_namesv)
1090 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
1091 SvPVX(cx->blk_eval.old_namesv));
1092 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1093 PTR2UV(cx->blk_eval.old_eval_root));
1094 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1095 PTR2UV(cx->blk_eval.retop));
1099 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
1100 cx->blk_loop.label);
1101 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
1102 (long)cx->blk_loop.resetsp);
1103 PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n",
1104 PTR2UV(cx->blk_loop.redo_op));
1105 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
1106 PTR2UV(cx->blk_loop.next_op));
1107 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n",
1108 PTR2UV(cx->blk_loop.last_op));
1109 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1110 (long)cx->blk_loop.iterix);
1111 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
1112 PTR2UV(cx->blk_loop.iterary));
1113 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1114 PTR2UV(CxITERVAR(cx)));
1116 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n",
1117 PTR2UV(cx->blk_loop.itersave));
1118 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n",
1119 PTR2UV(cx->blk_loop.iterlval));
1123 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
1124 (long)cx->sb_iters);
1125 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
1126 (long)cx->sb_maxiters);
1127 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1128 (long)cx->sb_rflags);
1129 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
1131 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
1133 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1134 PTR2UV(cx->sb_dstr));
1135 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1136 PTR2UV(cx->sb_targ));
1137 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1139 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1141 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1142 PTR2UV(cx->sb_strend));
1143 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1144 PTR2UV(cx->sb_rxres));
1147 #endif /* DEBUGGING */
1152 * c-indentation-style: bsd
1154 * indent-tabs-mode: t
1157 * vim: shiftwidth=4: