3 * Copyright (c) 1991-1999, Larry Wall
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.
11 * "Sam sat on the ground and put his head in his hands. 'I wish I had never
12 * come here, and I don't want to see no more magic,' he said, and fell silent."
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
31 # define VTBL this->*vtbl
37 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
45 /* MGS is typedef'ed to struct magic_state in perl.h */
48 S_save_magic(pTHX_ I32 mgs_ix, SV *sv)
52 assert(SvMAGICAL(sv));
54 SAVEDESTRUCTOR(S_restore_magic, (void*)mgs_ix);
56 mgs = SSPTR(mgs_ix, MGS*);
58 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
59 mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */
63 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
67 S_restore_magic(pTHX_ void *p)
70 MGS* mgs = SSPTR((I32)p, MGS*);
76 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
79 SvFLAGS(sv) |= mgs->mgs_flags;
83 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
86 mgs->mgs_sv = NULL; /* mark the MGS structure as restored */
88 /* If we're still on top of the stack, pop us off. (That condition
89 * will be satisfied if restore_magic was called explicitly, but *not*
90 * if it's being called via leave_scope.)
91 * The reason for doing this is that otherwise, things like sv_2cv()
92 * may leave alloc gunk on the savestack, and some code
93 * (e.g. sighandler) doesn't expect that...
95 if (PL_savestack_ix == mgs->mgs_ss_ix)
97 I32 popval = SSPOPINT;
98 assert(popval == SAVEt_DESTRUCTOR);
101 assert(popval == SAVEt_ALLOC);
103 PL_savestack_ix -= popval;
109 Perl_mg_magical(pTHX_ SV *sv)
112 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
113 MGVTBL* vtbl = mg->mg_virtual;
115 if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP))
119 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL))
126 Perl_mg_get(pTHX_ SV *sv)
134 mgs_ix = SSNEW(sizeof(MGS));
135 save_magic(mgs_ix, sv);
138 while ((mg = *mgp) != 0) {
139 MGVTBL* vtbl = mg->mg_virtual;
140 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) {
141 (VTBL->svt_get)(aTHX_ sv, mg);
142 /* Ignore this magic if it's been deleted */
143 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
144 (mg->mg_flags & MGf_GSKIP))
145 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
147 /* Advance to next magic (complicated by possible deletion) */
148 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
149 mgp = &mg->mg_moremagic;
153 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
156 restore_magic((void*)mgs_ix);
161 Perl_mg_set(pTHX_ SV *sv)
168 mgs_ix = SSNEW(sizeof(MGS));
169 save_magic(mgs_ix, sv);
171 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
172 MGVTBL* vtbl = mg->mg_virtual;
173 nextmg = mg->mg_moremagic; /* it may delete itself */
174 if (mg->mg_flags & MGf_GSKIP) {
175 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
176 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
178 if (vtbl && (vtbl->svt_set != NULL))
179 (VTBL->svt_set)(aTHX_ sv, mg);
182 restore_magic((void*)mgs_ix);
187 Perl_mg_length(pTHX_ SV *sv)
193 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
194 MGVTBL* vtbl = mg->mg_virtual;
195 if (vtbl && (vtbl->svt_len != NULL)) {
198 mgs_ix = SSNEW(sizeof(MGS));
199 save_magic(mgs_ix, sv);
200 /* omit MGf_GSKIP -- not changed here */
201 len = (VTBL->svt_len)(aTHX_ sv, mg);
202 restore_magic((void*)mgs_ix);
207 junk = SvPV(sv, len);
212 Perl_mg_size(pTHX_ SV *sv)
217 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
218 MGVTBL* vtbl = mg->mg_virtual;
219 if (vtbl && (vtbl->svt_len != NULL)) {
222 mgs_ix = SSNEW(sizeof(MGS));
223 save_magic(mgs_ix, sv);
224 /* omit MGf_GSKIP -- not changed here */
225 len = (VTBL->svt_len)(aTHX_ sv, mg);
226 restore_magic((void*)mgs_ix);
233 len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
238 Perl_croak(aTHX_ "Size magic not implemented");
245 Perl_mg_clear(pTHX_ SV *sv)
250 mgs_ix = SSNEW(sizeof(MGS));
251 save_magic(mgs_ix, sv);
253 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
254 MGVTBL* vtbl = mg->mg_virtual;
255 /* omit GSKIP -- never set here */
257 if (vtbl && (vtbl->svt_clear != NULL))
258 (VTBL->svt_clear)(aTHX_ sv, mg);
261 restore_magic((void*)mgs_ix);
266 Perl_mg_find(pTHX_ SV *sv, int type)
269 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
270 if (mg->mg_type == type)
277 Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen)
281 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
282 if (isUPPER(mg->mg_type)) {
284 mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj,
285 toLOWER(mg->mg_type), key, klen);
293 Perl_mg_free(pTHX_ SV *sv)
297 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
298 MGVTBL* vtbl = mg->mg_virtual;
299 moremagic = mg->mg_moremagic;
300 if (vtbl && (vtbl->svt_free != NULL))
301 (VTBL->svt_free)(aTHX_ sv, mg);
302 if (mg->mg_ptr && mg->mg_type != 'g')
304 Safefree(mg->mg_ptr);
305 else if (mg->mg_len == HEf_SVKEY)
306 SvREFCNT_dec((SV*)mg->mg_ptr);
307 if (mg->mg_flags & MGf_REFCOUNTED)
308 SvREFCNT_dec(mg->mg_obj);
315 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
320 Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
328 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
329 if (mg->mg_obj) /* @+ */
332 return rx->lastparen;
339 Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
348 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
352 if (paren <= rx->nparens &&
353 (s = rx->startp[paren]) != -1 &&
354 (t = rx->endp[paren]) != -1)
356 if (mg->mg_obj) /* @+ */
367 Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
376 switch (*mg->mg_ptr) {
377 case '1': case '2': case '3': case '4':
378 case '5': case '6': case '7': case '8': case '9': case '&':
379 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
382 paren = atoi(mg->mg_ptr);
384 if (paren <= rx->nparens &&
385 (s1 = rx->startp[paren]) != -1 &&
386 (t1 = rx->endp[paren]) != -1)
395 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
396 paren = rx->lastparen;
402 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
403 if (rx->startp[0] != -1) {
411 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
412 if (rx->endp[0] != -1) {
413 i = rx->sublen - rx->endp[0];
420 return (STRLEN)PL_ofslen;
422 return (STRLEN)PL_orslen;
425 if (!SvPOK(sv) && SvNIOK(sv)) {
435 Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
444 switch (*mg->mg_ptr) {
445 case '\001': /* ^A */
446 sv_setsv(sv, PL_bodytarget);
448 case '\002': /* ^B */
449 if (PL_curcop->cop_warnings == WARN_NONE ||
450 PL_curcop->cop_warnings == WARN_STD)
452 sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
454 else if (PL_curcop->cop_warnings == WARN_ALL) {
455 sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
458 sv_setsv(sv, PL_curcop->cop_warnings);
461 case '\003': /* ^C */
462 sv_setiv(sv, (IV)PL_minus_c);
465 case '\004': /* ^D */
466 sv_setiv(sv, (IV)(PL_debug & 32767));
468 case '\005': /* ^E */
471 # include <descrip.h>
472 # include <starlet.h>
474 $DESCRIPTOR(msgdsc,msg);
475 sv_setnv(sv,(NV) vaxc$errno);
476 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
477 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
483 if (!(_emx_env & 0x200)) { /* Under DOS */
484 sv_setnv(sv, (NV)errno);
485 sv_setpv(sv, errno ? Strerror(errno) : "");
487 if (errno != errno_isOS2) {
488 int tmp = _syserrno();
489 if (tmp) /* 2nd call to _syserrno() makes it 0 */
492 sv_setnv(sv, (NV)Perl_rc);
493 sv_setpv(sv, os2error(Perl_rc));
498 DWORD dwErr = GetLastError();
499 sv_setnv(sv, (NV)dwErr);
502 PerlProc_GetOSError(sv, dwErr);
509 sv_setnv(sv, (NV)errno);
510 sv_setpv(sv, errno ? Strerror(errno) : "");
514 SvNOK_on(sv); /* what a wonderful hack! */
516 case '\006': /* ^F */
517 sv_setiv(sv, (IV)PL_maxsysfd);
519 case '\010': /* ^H */
520 sv_setiv(sv, (IV)PL_hints);
522 case '\011': /* ^I */ /* NOT \t in EBCDIC */
524 sv_setpv(sv, PL_inplace);
526 sv_setsv(sv, &PL_sv_undef);
528 case '\017': /* ^O */
529 sv_setpv(sv, PL_osname);
531 case '\020': /* ^P */
532 sv_setiv(sv, (IV)PL_perldb);
534 case '\023': /* ^S */
537 if (PL_lex_state != LEX_NOTPARSING)
545 case '\024': /* ^T */
547 sv_setnv(sv, PL_basetime);
549 sv_setiv(sv, (IV)PL_basetime);
552 case '\027': /* ^W */
553 sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
555 case '1': case '2': case '3': case '4':
556 case '5': case '6': case '7': case '8': case '9': case '&':
557 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
561 * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
562 * XXX Does the new way break anything?
564 paren = atoi(mg->mg_ptr);
566 if (paren <= rx->nparens &&
567 (s1 = rx->startp[paren]) != -1 &&
568 (t1 = rx->endp[paren]) != -1)
576 was_tainted = PL_tainted;
581 PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
586 sv_setsv(sv,&PL_sv_undef);
589 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
590 paren = rx->lastparen;
594 sv_setsv(sv,&PL_sv_undef);
597 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
598 if ((s = rx->subbeg) && rx->startp[0] != -1) {
603 sv_setsv(sv,&PL_sv_undef);
606 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
607 if (rx->subbeg && rx->endp[0] != -1) {
608 s = rx->subbeg + rx->endp[0];
609 i = rx->sublen - rx->endp[0];
613 sv_setsv(sv,&PL_sv_undef);
617 if (GvIO(PL_last_in_gv)) {
618 sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv)));
624 sv_setiv(sv, (IV)STATUS_CURRENT);
625 #ifdef COMPLEX_STATUS
626 LvTARGOFF(sv) = PL_statusvalue;
627 LvTARGLEN(sv) = PL_statusvalue_vms;
632 s = IoTOP_NAME(GvIOp(PL_defoutgv));
636 sv_setpv(sv,GvENAME(PL_defoutgv));
641 s = IoFMT_NAME(GvIOp(PL_defoutgv));
643 s = GvENAME(PL_defoutgv);
648 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
651 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
654 sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
662 WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
665 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
668 sv_setpvn(sv,PL_ofs,PL_ofslen);
671 sv_setpvn(sv,PL_ors,PL_orslen);
674 sv_setpv(sv,PL_ofmt);
678 sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
679 sv_setpv(sv, errno ? Strerror(errno) : "");
682 int saveerrno = errno;
683 sv_setnv(sv, (NV)errno);
685 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
688 sv_setpv(sv, errno ? Strerror(errno) : "");
692 SvNOK_on(sv); /* what a wonderful hack! */
695 sv_setiv(sv, (IV)PL_uid);
698 sv_setiv(sv, (IV)PL_euid);
701 sv_setiv(sv, (IV)PL_gid);
702 Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_gid);
705 sv_setiv(sv, (IV)PL_egid);
706 Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_egid);
710 Groups_t gary[NGROUPS];
711 i = getgroups(NGROUPS,gary);
713 Perl_sv_catpvf(aTHX_ sv, " %Vd", (IV)gary[i]);
716 SvIOK_on(sv); /* what a wonderful hack! */
724 sv_setsv(sv, thr->errsv);
726 #endif /* USE_THREADS */
732 Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg)
734 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
736 if (uf && uf->uf_val)
737 (*uf->uf_val)(uf->uf_index, sv);
742 Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
753 #ifdef DYNAMIC_ENV_FETCH
754 /* We just undefd an environment var. Is a replacement */
755 /* waiting in the wings? */
758 if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
759 s = SvPV(*valp, len);
763 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
764 /* And you'll never guess what the dog had */
765 /* in its mouth... */
767 MgTAINTEDDIR_off(mg);
769 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
770 char pathbuf[256], eltbuf[256], *cp, *elt = s;
774 do { /* DCL$PATH may be a search list */
775 while (1) { /* as may dev portion of any element */
776 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
777 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
778 cando_by_name(S_IWUSR,0,elt) ) {
783 if ((cp = strchr(elt, ':')) != Nullch)
785 if (my_trnlnm(elt, eltbuf, j++))
791 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
794 if (s && klen == 4 && strEQ(ptr,"PATH")) {
795 char *strend = s + len;
800 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
803 if (i >= sizeof tmpbuf /* too long -- assume the worst */
805 || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
812 #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
818 Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg)
821 my_setenv(MgPV(mg,n_a),Nullch);
826 Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
829 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
835 magic_clear_all_env(sv,mg);
836 hv_iterinit((HV*)sv);
837 while (entry = hv_iternext((HV*)sv)) {
839 my_setenv(hv_iterkey(entry, &keylen),
840 SvPV(hv_iterval((HV*)sv, entry), n_a));
848 Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
851 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
854 char *envv = GetEnvironmentStrings();
858 char *end = strchr(cur,'=');
859 if (end && end != cur) {
861 my_setenv(cur,Nullch);
863 cur = end + strlen(end+1)+2;
865 else if ((len = strlen(cur)))
868 FreeEnvironmentStrings(envv);
870 # ifndef PERL_USE_SAFE_PUTENV
873 if (environ == PL_origenviron)
874 environ = (char**)safesysmalloc(sizeof(char*));
876 for (i = 0; environ[i]; i++)
877 safesysfree(environ[i]);
878 # endif /* PERL_USE_SAFE_PUTENV */
888 Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
892 /* Are we fetching a signal entry? */
893 i = whichsig(MgPV(mg,n_a));
896 sv_setsv(sv,PL_psig_ptr[i]);
898 Sighandler_t sigstate = rsignal_state(i);
900 /* cache state so we don't fetch it again */
901 if(sigstate == SIG_IGN)
902 sv_setpv(sv,"IGNORE");
904 sv_setsv(sv,&PL_sv_undef);
905 PL_psig_ptr[i] = SvREFCNT_inc(sv);
912 Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg)
916 /* Are we clearing a signal entry? */
917 i = whichsig(MgPV(mg,n_a));
920 SvREFCNT_dec(PL_psig_ptr[i]);
923 if(PL_psig_name[i]) {
924 SvREFCNT_dec(PL_psig_name[i]);
932 Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
942 if (strEQ(s,"__DIE__"))
944 else if (strEQ(s,"__WARN__"))
946 else if (strEQ(s,"__PARSE__"))
949 Perl_croak(aTHX_ "No such hook: %s", s);
957 i = whichsig(s); /* ...no, a brick */
959 if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM"))
960 Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s);
963 SvREFCNT_dec(PL_psig_name[i]);
964 SvREFCNT_dec(PL_psig_ptr[i]);
965 PL_psig_ptr[i] = SvREFCNT_inc(sv);
966 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
967 PL_psig_name[i] = newSVpvn(s, len);
968 SvREADONLY_on(PL_psig_name[i]);
970 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
972 (void)rsignal(i, PL_sighandlerp);
974 *svp = SvREFCNT_inc(sv);
977 s = SvPV_force(sv,len);
978 if (strEQ(s,"IGNORE")) {
980 (void)rsignal(i, SIG_IGN);
984 else if (strEQ(s,"DEFAULT") || !*s) {
986 (void)rsignal(i, SIG_DFL);
992 * We should warn if HINT_STRICT_REFS, but without
993 * access to a known hint bit in a known OP, we can't
994 * tell whether HINT_STRICT_REFS is in force or not.
996 if (!strchr(s,':') && !strchr(s,'\''))
997 sv_insert(sv, 0, 0, "main::", 6);
999 (void)rsignal(i, PL_sighandlerp);
1001 *svp = SvREFCNT_inc(sv);
1007 Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
1009 PL_sub_generation++;
1014 Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg)
1016 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
1017 PL_amagic_generation++;
1023 Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg)
1025 HV *hv = (HV*)LvTARG(sv);
1030 (void) hv_iterinit(hv);
1031 if (! SvTIED_mg((SV*)hv, 'P'))
1035 while (entry = hv_iternext(hv)) {
1041 sv_setiv(sv, (IV)i);
1046 Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg)
1049 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
1054 /* caller is responsible for stack switching/cleanup */
1056 S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val)
1062 PUSHs(SvTIED_obj(sv, mg));
1065 if (mg->mg_len >= 0)
1066 PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len)));
1067 else if (mg->mg_len == HEf_SVKEY)
1068 PUSHs((SV*)mg->mg_ptr);
1070 else if (mg->mg_type == 'p') {
1071 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
1079 return call_method(meth, flags);
1083 S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth)
1089 PUSHSTACKi(PERLSI_MAGIC);
1091 if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) {
1092 sv_setsv(sv, *PL_stack_sp--);
1102 Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg)
1104 magic_methpack(sv,mg,"FETCH");
1106 mg->mg_flags |= MGf_GSKIP;
1111 Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
1115 PUSHSTACKi(PERLSI_MAGIC);
1116 magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
1123 Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg)
1125 return magic_methpack(sv,mg,"DELETE");
1130 Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
1137 PUSHSTACKi(PERLSI_MAGIC);
1138 if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
1139 sv = *PL_stack_sp--;
1140 retval = (U32) SvIV(sv)-1;
1149 Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
1154 PUSHSTACKi(PERLSI_MAGIC);
1156 XPUSHs(SvTIED_obj(sv, mg));
1158 call_method("CLEAR", G_SCALAR|G_DISCARD);
1165 Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
1168 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
1172 PUSHSTACKi(PERLSI_MAGIC);
1175 PUSHs(SvTIED_obj(sv, mg));
1180 if (call_method(meth, G_SCALAR))
1181 sv_setsv(key, *PL_stack_sp--);
1190 Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg)
1192 return magic_methpack(sv,mg,"EXISTS");
1196 Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
1207 svp = av_fetch(GvAV(gv),
1208 atoi(MgPV(mg,n_a)), FALSE);
1209 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
1211 else if (ckWARN_d(WARN_INTERNAL))
1212 Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n");
1217 Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg)
1220 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
1225 Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg)
1228 av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
1233 Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg)
1235 SV* lsv = LvTARG(sv);
1237 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1238 mg = mg_find(lsv, 'g');
1239 if (mg && mg->mg_len >= 0) {
1243 sv_pos_b2u(lsv, &i);
1244 sv_setiv(sv, i + PL_curcop->cop_arybase);
1253 Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg)
1255 SV* lsv = LvTARG(sv);
1263 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1264 mg = mg_find(lsv, 'g');
1268 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1269 mg = mg_find(lsv, 'g');
1271 else if (!SvOK(sv)) {
1275 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1277 pos = SvIV(sv) - PL_curcop->cop_arybase;
1280 ulen = sv_len_utf8(lsv);
1297 sv_pos_u2b(lsv, &p, 0);
1302 mg->mg_flags &= ~MGf_MINMATCH;
1308 Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg)
1310 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1312 gv_efullname3(sv,((GV*)sv), "*");
1316 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1321 Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg)
1330 if (*s == '*' && s[1])
1332 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1337 GvGP(sv) = gp_ref(GvGP(gv));
1342 Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg)
1345 SV *lsv = LvTARG(sv);
1346 char *tmps = SvPV(lsv,len);
1347 I32 offs = LvTARGOFF(sv);
1348 I32 rem = LvTARGLEN(sv);
1352 if (rem + offs > len)
1354 sv_setpvn(sv, tmps + offs, (STRLEN)rem);
1359 Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
1362 char *tmps = SvPV(sv,len);
1363 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1368 Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg)
1371 TAINT_IF((mg->mg_len & 1) ||
1372 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1377 Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg)
1380 if (PL_localizing) {
1381 if (PL_localizing == 1)
1386 else if (PL_tainted)
1394 Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg)
1396 SV *lsv = LvTARG(sv);
1398 unsigned long retnum;
1408 s = (unsigned char *) SvPV(lsv, lsvlen);
1409 offset = LvTARGOFF(sv);
1410 size = LvTARGLEN(sv);
1411 len = (offset + size + 7) / 8;
1413 /* Copied from pp_vec() */
1421 if (offset >= lsvlen)
1424 retnum = (unsigned long) s[offset] << 8;
1426 else if (size == 32) {
1427 if (offset >= lsvlen)
1429 else if (offset + 1 >= lsvlen)
1430 retnum = (unsigned long) s[offset] << 24;
1431 else if (offset + 2 >= lsvlen)
1432 retnum = ((unsigned long) s[offset] << 24) +
1433 ((unsigned long) s[offset + 1] << 16);
1435 retnum = ((unsigned long) s[offset] << 24) +
1436 ((unsigned long) s[offset + 1] << 16) +
1437 (s[offset + 2] << 8);
1442 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
1447 else if (size == 16)
1448 retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
1449 else if (size == 32)
1450 retnum = ((unsigned long) s[offset] << 24) +
1451 ((unsigned long) s[offset + 1] << 16) +
1452 (s[offset + 2] << 8) + s[offset+3];
1455 sv_setuv(sv, (UV)retnum);
1460 Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg)
1462 do_vecset(sv); /* XXX slurp this routine */
1467 Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg)
1470 if (LvTARGLEN(sv)) {
1472 SV *ahv = LvTARG(sv);
1473 if (SvTYPE(ahv) == SVt_PVHV) {
1474 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
1479 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
1485 AV* av = (AV*)LvTARG(sv);
1486 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1487 targ = AvARRAY(av)[LvTARGOFF(sv)];
1489 if (targ && targ != &PL_sv_undef) {
1490 dTHR; /* just for SvREFCNT_dec */
1491 /* somebody else defined it for us */
1492 SvREFCNT_dec(LvTARG(sv));
1493 LvTARG(sv) = SvREFCNT_inc(targ);
1495 SvREFCNT_dec(mg->mg_obj);
1496 mg->mg_obj = Nullsv;
1497 mg->mg_flags &= ~MGf_REFCOUNTED;
1502 sv_setsv(sv, targ ? targ : &PL_sv_undef);
1507 Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg)
1512 sv_setsv(LvTARG(sv), sv);
1513 SvSETMAGIC(LvTARG(sv));
1519 Perl_vivify_defelem(pTHX_ SV *sv)
1521 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1525 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1528 SV *ahv = LvTARG(sv);
1530 if (SvTYPE(ahv) == SVt_PVHV) {
1531 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
1536 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
1540 if (!value || value == &PL_sv_undef)
1541 Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a));
1544 AV* av = (AV*)LvTARG(sv);
1545 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1546 LvTARG(sv) = Nullsv; /* array can't be extended */
1548 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1549 if (!svp || (value = *svp) == &PL_sv_undef)
1550 Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv));
1553 (void)SvREFCNT_inc(value);
1554 SvREFCNT_dec(LvTARG(sv));
1557 SvREFCNT_dec(mg->mg_obj);
1558 mg->mg_obj = Nullsv;
1559 mg->mg_flags &= ~MGf_REFCOUNTED;
1563 Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
1565 AV *av = (AV*)mg->mg_obj;
1566 SV **svp = AvARRAY(av);
1567 I32 i = AvFILLp(av);
1569 if (svp[i] && svp[i] != &PL_sv_undef) {
1570 if (!SvWEAKREF(svp[i]))
1571 Perl_croak(aTHX_ "panic: magic_killbackrefs");
1572 /* XXX Should we check that it hasn't changed? */
1575 SvWEAKREF_off(svp[i]);
1576 svp[i] = &PL_sv_undef;
1584 Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg)
1592 Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg)
1594 sv_unmagic(sv, 'B');
1600 Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg)
1602 sv_unmagic(sv, 'f');
1608 Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg)
1610 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1612 if (uf && uf->uf_set)
1613 (*uf->uf_set)(uf->uf_index, sv);
1618 Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg)
1620 regexp *re = (regexp *)mg->mg_obj;
1625 #ifdef USE_LOCALE_COLLATE
1627 Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg)
1630 * RenE<eacute> Descartes said "I think not."
1631 * and vanished with a faint plop.
1634 Safefree(mg->mg_ptr);
1640 #endif /* USE_LOCALE_COLLATE */
1643 Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
1649 switch (*mg->mg_ptr) {
1650 case '\001': /* ^A */
1651 sv_setsv(PL_bodytarget, sv);
1653 case '\002': /* ^B */
1654 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1655 if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) {
1656 PL_compiling.cop_warnings = WARN_ALL;
1657 PL_dowarn |= G_WARN_ONCE ;
1659 else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize))
1660 PL_compiling.cop_warnings = WARN_NONE;
1662 if (specialWARN(PL_compiling.cop_warnings))
1663 PL_compiling.cop_warnings = newSVsv(sv) ;
1665 sv_setsv(PL_compiling.cop_warnings, sv);
1666 if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE))
1667 PL_dowarn |= G_WARN_ONCE ;
1672 case '\003': /* ^C */
1673 PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1676 case '\004': /* ^D */
1677 PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1678 DEBUG_x(dump_all());
1680 case '\005': /* ^E */
1682 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1685 SetLastError( SvIV(sv) );
1688 /* will anyone ever use this? */
1689 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1694 case '\006': /* ^F */
1695 PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1697 case '\010': /* ^H */
1698 PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1700 case '\011': /* ^I */ /* NOT \t in EBCDIC */
1702 Safefree(PL_inplace);
1704 PL_inplace = savepv(SvPV(sv,len));
1706 PL_inplace = Nullch;
1708 case '\017': /* ^O */
1710 Safefree(PL_osname);
1712 PL_osname = savepv(SvPV(sv,len));
1716 case '\020': /* ^P */
1717 PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1719 case '\024': /* ^T */
1721 PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1723 PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1726 case '\027': /* ^W */
1727 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1728 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1729 PL_dowarn = (PL_dowarn & ~G_WARN_ON)
1730 | (i ? G_WARN_ON : G_WARN_OFF) ;
1734 if (PL_localizing) {
1735 if (PL_localizing == 1)
1736 save_sptr((SV**)&PL_last_in_gv);
1738 else if (SvOK(sv) && GvIO(PL_last_in_gv))
1739 IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
1742 Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
1743 IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1744 IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1747 Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
1748 IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1749 IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1752 IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1755 IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1756 if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
1757 IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
1760 IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1764 IO *io = GvIOp(PL_defoutgv);
1765 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1766 IoFLAGS(io) &= ~IOf_FLUSH;
1768 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1769 PerlIO *ofp = IoOFP(io);
1771 (void)PerlIO_flush(ofp);
1772 IoFLAGS(io) |= IOf_FLUSH;
1778 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1779 PL_multiline = (i != 0);
1782 SvREFCNT_dec(PL_nrs);
1783 PL_nrs = newSVsv(sv);
1784 SvREFCNT_dec(PL_rs);
1785 PL_rs = SvREFCNT_inc(PL_nrs);
1790 if (SvOK(sv) || SvGMAGICAL(sv))
1791 PL_ors = savepv(SvPV(sv,PL_orslen));
1800 PL_ofs = savepv(SvPV(sv, PL_ofslen));
1805 PL_ofmt = savepv(SvPV(sv,len));
1808 PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1811 #ifdef COMPLEX_STATUS
1812 if (PL_localizing == 2) {
1813 PL_statusvalue = LvTARGOFF(sv);
1814 PL_statusvalue_vms = LvTARGLEN(sv);
1818 #ifdef VMSISH_STATUS
1820 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1823 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1826 SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
1827 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1830 PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1831 if (PL_delaymagic) {
1832 PL_delaymagic |= DM_RUID;
1833 break; /* don't do magic till later */
1836 (void)setruid((Uid_t)PL_uid);
1839 (void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
1841 #ifdef HAS_SETRESUID
1842 (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
1844 if (PL_uid == PL_euid) /* special case $< = $> */
1845 (void)PerlProc_setuid(PL_uid);
1847 PL_uid = (I32)PerlProc_getuid();
1848 Perl_croak(aTHX_ "setruid() not implemented");
1853 PL_uid = (I32)PerlProc_getuid();
1854 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1857 PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1858 if (PL_delaymagic) {
1859 PL_delaymagic |= DM_EUID;
1860 break; /* don't do magic till later */
1863 (void)seteuid((Uid_t)PL_euid);
1866 (void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
1868 #ifdef HAS_SETRESUID
1869 (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
1871 if (PL_euid == PL_uid) /* special case $> = $< */
1872 PerlProc_setuid(PL_euid);
1874 PL_euid = (I32)PerlProc_geteuid();
1875 Perl_croak(aTHX_ "seteuid() not implemented");
1880 PL_euid = (I32)PerlProc_geteuid();
1881 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1884 PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1885 if (PL_delaymagic) {
1886 PL_delaymagic |= DM_RGID;
1887 break; /* don't do magic till later */
1890 (void)setrgid((Gid_t)PL_gid);
1893 (void)setregid((Gid_t)PL_gid, (Gid_t)-1);
1895 #ifdef HAS_SETRESGID
1896 (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
1898 if (PL_gid == PL_egid) /* special case $( = $) */
1899 (void)PerlProc_setgid(PL_gid);
1901 PL_gid = (I32)PerlProc_getgid();
1902 Perl_croak(aTHX_ "setrgid() not implemented");
1907 PL_gid = (I32)PerlProc_getgid();
1908 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1911 #ifdef HAS_SETGROUPS
1913 char *p = SvPV(sv, len);
1914 Groups_t gary[NGROUPS];
1918 PL_egid = I_V(atol(p));
1919 for (i = 0; i < NGROUPS; ++i) {
1920 while (*p && !isSPACE(*p))
1926 gary[i] = I_V(atol(p));
1929 (void)setgroups(i, gary);
1931 #else /* HAS_SETGROUPS */
1932 PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1933 #endif /* HAS_SETGROUPS */
1934 if (PL_delaymagic) {
1935 PL_delaymagic |= DM_EGID;
1936 break; /* don't do magic till later */
1939 (void)setegid((Gid_t)PL_egid);
1942 (void)setregid((Gid_t)-1, (Gid_t)PL_egid);
1944 #ifdef HAS_SETRESGID
1945 (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
1947 if (PL_egid == PL_gid) /* special case $) = $( */
1948 (void)PerlProc_setgid(PL_egid);
1950 PL_egid = (I32)PerlProc_getegid();
1951 Perl_croak(aTHX_ "setegid() not implemented");
1956 PL_egid = (I32)PerlProc_getegid();
1957 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1960 PL_chopset = SvPV_force(sv,len);
1966 /* See if all the arguments are contiguous in memory */
1967 for (i = 1; i < PL_origargc; i++) {
1968 if (PL_origargv[i] == s + 1
1970 || PL_origargv[i] == s + 2
1975 s += strlen(s); /* this one is ok too */
1980 /* can grab env area too? */
1981 if (PL_origenviron && (PL_origenviron[0] == s + 1
1983 || (PL_origenviron[0] == s + 9 && (s += 8))
1986 my_setenv("NoNe SuCh", Nullch);
1987 /* force copy of environment */
1988 for (i = 0; PL_origenviron[i]; i++)
1989 if (PL_origenviron[i] == s + 1) {
1996 PL_origalen = s - PL_origargv[0];
1998 s = SvPV_force(sv,len);
2000 if (i >= PL_origalen) {
2002 /* don't allow system to limit $0 seen by script */
2003 /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
2004 Copy(s, PL_origargv[0], i, char);
2005 s = PL_origargv[0]+i;
2009 Copy(s, PL_origargv[0], i, char);
2010 s = PL_origargv[0]+i;
2012 while (++i < PL_origalen)
2014 s = PL_origargv[0]+i;
2015 for (i = 1; i < PL_origargc; i++)
2016 PL_origargv[i] = Nullch;
2021 sv_setsv(thr->errsv, sv);
2023 #endif /* USE_THREADS */
2030 Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg)
2033 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
2034 (unsigned long)thr, (unsigned long)sv);)
2036 Perl_croak(aTHX_ "panic: magic_mutexfree");
2037 MUTEX_DESTROY(MgMUTEXP(mg));
2038 COND_DESTROY(MgCONDP(mg));
2041 #endif /* USE_THREADS */
2044 Perl_whichsig(pTHX_ char *sig)
2046 register char **sigv;
2048 for (sigv = PL_sig_name+1; *sigv; sigv++)
2049 if (strEQ(sig,*sigv))
2050 return PL_sig_num[sigv - PL_sig_name];
2052 if (strEQ(sig,"CHLD"))
2056 if (strEQ(sig,"CLD"))
2065 S_unwind_handler_stack(pTHX_ void *p)
2068 U32 flags = *(U32*)p;
2071 PL_savestack_ix -= 5; /* Unprotect save in progress. */
2072 /* cxstack_ix-- Not needed, die already unwound it. */
2074 SvREFCNT_dec(sig_sv);
2078 Perl_sighandler(int sig)
2084 SV *sv, *tSv = PL_Sv;
2088 I32 o_save_i = PL_savestack_ix, type;
2091 if (PL_savestack_ix + 15 <= PL_savestack_max)
2093 if (PL_markstack_ptr < PL_markstack_max - 2)
2095 if (PL_retstack_ix < PL_retstack_max - 2)
2097 if (PL_scopestack_ix < PL_scopestack_max - 3)
2100 if (!PL_psig_ptr[sig])
2101 Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n",
2104 /* Max number of items pushed there is 3*n or 4. We cannot fix
2105 infinity, so we fix 4 (in fact 5): */
2107 PL_savestack_ix += 5; /* Protect save in progress. */
2108 o_save_i = PL_savestack_ix;
2109 SAVEDESTRUCTOR(S_unwind_handler_stack, (void*)&flags);
2112 PL_markstack_ptr++; /* Protect mark. */
2115 PL_retstack[PL_retstack_ix] = NULL;
2118 PL_scopestack_ix += 1;
2119 /* sv_2cv is too complicated, try a simpler variant first: */
2120 if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig]))
2121 || SvTYPE(cv) != SVt_PVCV)
2122 cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE);
2124 if (!cv || !CvROOT(cv)) {
2125 if (ckWARN(WARN_SIGNAL))
2126 Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n",
2127 PL_sig_name[sig], (gv ? GvENAME(gv)
2134 if(PL_psig_name[sig]) {
2135 sv = SvREFCNT_inc(PL_psig_name[sig]);
2139 sv = sv_newmortal();
2140 sv_setpv(sv,PL_sig_name[sig]);
2143 PUSHSTACKi(PERLSI_SIGNAL);
2148 call_sv((SV*)cv, G_DISCARD);
2153 PL_savestack_ix -= 8; /* Unprotect save in progress. */
2159 PL_scopestack_ix -= 1;
2162 PL_op = myop; /* Apparently not needed... */
2164 PL_Sv = tSv; /* Restore global temporaries. */