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
36 static void restore_magic(pTHXo_ void *p);
37 static void unwind_handler_stack(pTHXo_ void *p);
40 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
48 /* MGS is typedef'ed to struct magic_state in perl.h */
51 S_save_magic(pTHX_ I32 mgs_ix, SV *sv)
55 assert(SvMAGICAL(sv));
57 SAVEDESTRUCTOR(restore_magic, (void*)mgs_ix);
59 mgs = SSPTR(mgs_ix, MGS*);
61 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
62 mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */
66 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
70 Perl_mg_magical(pTHX_ SV *sv)
73 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
74 MGVTBL* vtbl = mg->mg_virtual;
76 if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP))
80 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL))
87 Perl_mg_get(pTHX_ SV *sv)
95 mgs_ix = SSNEW(sizeof(MGS));
96 save_magic(mgs_ix, sv);
99 while ((mg = *mgp) != 0) {
100 MGVTBL* vtbl = mg->mg_virtual;
101 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) {
102 (VTBL->svt_get)(aTHX_ sv, mg);
103 /* Ignore this magic if it's been deleted */
104 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
105 (mg->mg_flags & MGf_GSKIP))
106 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
108 /* Advance to next magic (complicated by possible deletion) */
109 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
110 mgp = &mg->mg_moremagic;
114 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
117 restore_magic(aTHXo_ (void*)mgs_ix);
122 Perl_mg_set(pTHX_ SV *sv)
129 mgs_ix = SSNEW(sizeof(MGS));
130 save_magic(mgs_ix, sv);
132 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
133 MGVTBL* vtbl = mg->mg_virtual;
134 nextmg = mg->mg_moremagic; /* it may delete itself */
135 if (mg->mg_flags & MGf_GSKIP) {
136 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
137 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
139 if (vtbl && (vtbl->svt_set != NULL))
140 (VTBL->svt_set)(aTHX_ sv, mg);
143 restore_magic(aTHXo_ (void*)mgs_ix);
148 Perl_mg_length(pTHX_ SV *sv)
154 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
155 MGVTBL* vtbl = mg->mg_virtual;
156 if (vtbl && (vtbl->svt_len != NULL)) {
159 mgs_ix = SSNEW(sizeof(MGS));
160 save_magic(mgs_ix, sv);
161 /* omit MGf_GSKIP -- not changed here */
162 len = (VTBL->svt_len)(aTHX_ sv, mg);
163 restore_magic(aTHXo_ (void*)mgs_ix);
168 junk = SvPV(sv, len);
173 Perl_mg_size(pTHX_ SV *sv)
178 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
179 MGVTBL* vtbl = mg->mg_virtual;
180 if (vtbl && (vtbl->svt_len != NULL)) {
183 mgs_ix = SSNEW(sizeof(MGS));
184 save_magic(mgs_ix, sv);
185 /* omit MGf_GSKIP -- not changed here */
186 len = (VTBL->svt_len)(aTHX_ sv, mg);
187 restore_magic(aTHXo_ (void*)mgs_ix);
194 len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
199 Perl_croak(aTHX_ "Size magic not implemented");
206 Perl_mg_clear(pTHX_ SV *sv)
211 mgs_ix = SSNEW(sizeof(MGS));
212 save_magic(mgs_ix, sv);
214 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
215 MGVTBL* vtbl = mg->mg_virtual;
216 /* omit GSKIP -- never set here */
218 if (vtbl && (vtbl->svt_clear != NULL))
219 (VTBL->svt_clear)(aTHX_ sv, mg);
222 restore_magic(aTHXo_ (void*)mgs_ix);
227 Perl_mg_find(pTHX_ SV *sv, int type)
230 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
231 if (mg->mg_type == type)
238 Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen)
242 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
243 if (isUPPER(mg->mg_type)) {
245 mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj,
246 toLOWER(mg->mg_type), key, klen);
254 Perl_mg_free(pTHX_ SV *sv)
258 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
259 MGVTBL* vtbl = mg->mg_virtual;
260 moremagic = mg->mg_moremagic;
261 if (vtbl && (vtbl->svt_free != NULL))
262 (VTBL->svt_free)(aTHX_ sv, mg);
263 if (mg->mg_ptr && mg->mg_type != 'g')
265 Safefree(mg->mg_ptr);
266 else if (mg->mg_len == HEf_SVKEY)
267 SvREFCNT_dec((SV*)mg->mg_ptr);
268 if (mg->mg_flags & MGf_REFCOUNTED)
269 SvREFCNT_dec(mg->mg_obj);
276 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
281 Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
289 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
290 if (mg->mg_obj) /* @+ */
293 return rx->lastparen;
300 Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
309 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
313 if (paren <= rx->nparens &&
314 (s = rx->startp[paren]) != -1 &&
315 (t = rx->endp[paren]) != -1)
317 if (mg->mg_obj) /* @+ */
328 Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
337 switch (*mg->mg_ptr) {
338 case '1': case '2': case '3': case '4':
339 case '5': case '6': case '7': case '8': case '9': case '&':
340 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
343 paren = atoi(mg->mg_ptr);
345 if (paren <= rx->nparens &&
346 (s1 = rx->startp[paren]) != -1 &&
347 (t1 = rx->endp[paren]) != -1)
356 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
357 paren = rx->lastparen;
363 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
364 if (rx->startp[0] != -1) {
372 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
373 if (rx->endp[0] != -1) {
374 i = rx->sublen - rx->endp[0];
381 return (STRLEN)PL_ofslen;
383 return (STRLEN)PL_orslen;
386 if (!SvPOK(sv) && SvNIOK(sv)) {
396 Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
405 switch (*mg->mg_ptr) {
406 case '\001': /* ^A */
407 sv_setsv(sv, PL_bodytarget);
409 case '\002': /* ^B */
410 if (PL_curcop->cop_warnings == WARN_NONE ||
411 PL_curcop->cop_warnings == WARN_STD)
413 sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
415 else if (PL_curcop->cop_warnings == WARN_ALL) {
416 sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
419 sv_setsv(sv, PL_curcop->cop_warnings);
422 case '\003': /* ^C */
423 sv_setiv(sv, (IV)PL_minus_c);
426 case '\004': /* ^D */
427 sv_setiv(sv, (IV)(PL_debug & 32767));
429 case '\005': /* ^E */
432 # include <descrip.h>
433 # include <starlet.h>
435 $DESCRIPTOR(msgdsc,msg);
436 sv_setnv(sv,(NV) vaxc$errno);
437 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
438 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
444 if (!(_emx_env & 0x200)) { /* Under DOS */
445 sv_setnv(sv, (NV)errno);
446 sv_setpv(sv, errno ? Strerror(errno) : "");
448 if (errno != errno_isOS2) {
449 int tmp = _syserrno();
450 if (tmp) /* 2nd call to _syserrno() makes it 0 */
453 sv_setnv(sv, (NV)Perl_rc);
454 sv_setpv(sv, os2error(Perl_rc));
459 DWORD dwErr = GetLastError();
460 sv_setnv(sv, (NV)dwErr);
463 PerlProc_GetOSError(sv, dwErr);
470 sv_setnv(sv, (NV)errno);
471 sv_setpv(sv, errno ? Strerror(errno) : "");
475 SvNOK_on(sv); /* what a wonderful hack! */
477 case '\006': /* ^F */
478 sv_setiv(sv, (IV)PL_maxsysfd);
480 case '\010': /* ^H */
481 sv_setiv(sv, (IV)PL_hints);
483 case '\011': /* ^I */ /* NOT \t in EBCDIC */
485 sv_setpv(sv, PL_inplace);
487 sv_setsv(sv, &PL_sv_undef);
489 case '\017': /* ^O */
490 sv_setpv(sv, PL_osname);
492 case '\020': /* ^P */
493 sv_setiv(sv, (IV)PL_perldb);
495 case '\023': /* ^S */
498 if (PL_lex_state != LEX_NOTPARSING)
506 case '\024': /* ^T */
508 sv_setnv(sv, PL_basetime);
510 sv_setiv(sv, (IV)PL_basetime);
513 case '\027': /* ^W */
514 sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
516 case '1': case '2': case '3': case '4':
517 case '5': case '6': case '7': case '8': case '9': case '&':
518 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
522 * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
523 * XXX Does the new way break anything?
525 paren = atoi(mg->mg_ptr);
527 if (paren <= rx->nparens &&
528 (s1 = rx->startp[paren]) != -1 &&
529 (t1 = rx->endp[paren]) != -1)
537 was_tainted = PL_tainted;
542 PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
547 sv_setsv(sv,&PL_sv_undef);
550 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
551 paren = rx->lastparen;
555 sv_setsv(sv,&PL_sv_undef);
558 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
559 if ((s = rx->subbeg) && rx->startp[0] != -1) {
564 sv_setsv(sv,&PL_sv_undef);
567 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
568 if (rx->subbeg && rx->endp[0] != -1) {
569 s = rx->subbeg + rx->endp[0];
570 i = rx->sublen - rx->endp[0];
574 sv_setsv(sv,&PL_sv_undef);
578 if (GvIO(PL_last_in_gv)) {
579 sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv)));
585 sv_setiv(sv, (IV)STATUS_CURRENT);
586 #ifdef COMPLEX_STATUS
587 LvTARGOFF(sv) = PL_statusvalue;
588 LvTARGLEN(sv) = PL_statusvalue_vms;
593 s = IoTOP_NAME(GvIOp(PL_defoutgv));
597 sv_setpv(sv,GvENAME(PL_defoutgv));
602 s = IoFMT_NAME(GvIOp(PL_defoutgv));
604 s = GvENAME(PL_defoutgv);
609 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
612 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
615 sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
623 WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
626 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
629 sv_setpvn(sv,PL_ofs,PL_ofslen);
632 sv_setpvn(sv,PL_ors,PL_orslen);
635 sv_setpv(sv,PL_ofmt);
639 sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
640 sv_setpv(sv, errno ? Strerror(errno) : "");
643 int saveerrno = errno;
644 sv_setnv(sv, (NV)errno);
646 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
649 sv_setpv(sv, errno ? Strerror(errno) : "");
653 SvNOK_on(sv); /* what a wonderful hack! */
656 sv_setiv(sv, (IV)PL_uid);
659 sv_setiv(sv, (IV)PL_euid);
662 sv_setiv(sv, (IV)PL_gid);
663 Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_gid);
666 sv_setiv(sv, (IV)PL_egid);
667 Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_egid);
671 Groups_t gary[NGROUPS];
672 i = getgroups(NGROUPS,gary);
674 Perl_sv_catpvf(aTHX_ sv, " %Vd", (IV)gary[i]);
677 SvIOK_on(sv); /* what a wonderful hack! */
685 sv_setsv(sv, thr->errsv);
687 #endif /* USE_THREADS */
693 Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg)
695 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
697 if (uf && uf->uf_val)
698 (*uf->uf_val)(uf->uf_index, sv);
703 Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
714 #ifdef DYNAMIC_ENV_FETCH
715 /* We just undefd an environment var. Is a replacement */
716 /* waiting in the wings? */
719 if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
720 s = SvPV(*valp, len);
724 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
725 /* And you'll never guess what the dog had */
726 /* in its mouth... */
728 MgTAINTEDDIR_off(mg);
730 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
731 char pathbuf[256], eltbuf[256], *cp, *elt = s;
735 do { /* DCL$PATH may be a search list */
736 while (1) { /* as may dev portion of any element */
737 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
738 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
739 cando_by_name(S_IWUSR,0,elt) ) {
744 if ((cp = strchr(elt, ':')) != Nullch)
746 if (my_trnlnm(elt, eltbuf, j++))
752 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
755 if (s && klen == 4 && strEQ(ptr,"PATH")) {
756 char *strend = s + len;
761 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
764 if (i >= sizeof tmpbuf /* too long -- assume the worst */
766 || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
773 #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
779 Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg)
782 my_setenv(MgPV(mg,n_a),Nullch);
787 Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
790 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
796 magic_clear_all_env(sv,mg);
797 hv_iterinit((HV*)sv);
798 while (entry = hv_iternext((HV*)sv)) {
800 my_setenv(hv_iterkey(entry, &keylen),
801 SvPV(hv_iterval((HV*)sv, entry), n_a));
809 Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
812 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
815 char *envv = GetEnvironmentStrings();
819 char *end = strchr(cur,'=');
820 if (end && end != cur) {
822 my_setenv(cur,Nullch);
824 cur = end + strlen(end+1)+2;
826 else if ((len = strlen(cur)))
829 FreeEnvironmentStrings(envv);
831 # ifndef PERL_USE_SAFE_PUTENV
834 if (environ == PL_origenviron)
835 environ = (char**)safesysmalloc(sizeof(char*));
837 for (i = 0; environ[i]; i++)
838 safesysfree(environ[i]);
839 # endif /* PERL_USE_SAFE_PUTENV */
849 Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
853 /* Are we fetching a signal entry? */
854 i = whichsig(MgPV(mg,n_a));
857 sv_setsv(sv,PL_psig_ptr[i]);
859 Sighandler_t sigstate = rsignal_state(i);
861 /* cache state so we don't fetch it again */
862 if(sigstate == SIG_IGN)
863 sv_setpv(sv,"IGNORE");
865 sv_setsv(sv,&PL_sv_undef);
866 PL_psig_ptr[i] = SvREFCNT_inc(sv);
873 Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg)
877 /* Are we clearing a signal entry? */
878 i = whichsig(MgPV(mg,n_a));
881 SvREFCNT_dec(PL_psig_ptr[i]);
884 if(PL_psig_name[i]) {
885 SvREFCNT_dec(PL_psig_name[i]);
893 Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
903 if (strEQ(s,"__DIE__"))
905 else if (strEQ(s,"__WARN__"))
907 else if (strEQ(s,"__PARSE__"))
910 Perl_croak(aTHX_ "No such hook: %s", s);
918 i = whichsig(s); /* ...no, a brick */
920 if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM"))
921 Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s);
924 SvREFCNT_dec(PL_psig_name[i]);
925 SvREFCNT_dec(PL_psig_ptr[i]);
926 PL_psig_ptr[i] = SvREFCNT_inc(sv);
927 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
928 PL_psig_name[i] = newSVpvn(s, len);
929 SvREADONLY_on(PL_psig_name[i]);
931 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
933 (void)rsignal(i, PL_sighandlerp);
935 *svp = SvREFCNT_inc(sv);
938 s = SvPV_force(sv,len);
939 if (strEQ(s,"IGNORE")) {
941 (void)rsignal(i, SIG_IGN);
945 else if (strEQ(s,"DEFAULT") || !*s) {
947 (void)rsignal(i, SIG_DFL);
953 * We should warn if HINT_STRICT_REFS, but without
954 * access to a known hint bit in a known OP, we can't
955 * tell whether HINT_STRICT_REFS is in force or not.
957 if (!strchr(s,':') && !strchr(s,'\''))
958 sv_insert(sv, 0, 0, "main::", 6);
960 (void)rsignal(i, PL_sighandlerp);
962 *svp = SvREFCNT_inc(sv);
968 Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
975 Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg)
977 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
978 PL_amagic_generation++;
984 Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg)
986 HV *hv = (HV*)LvTARG(sv);
991 (void) hv_iterinit(hv);
992 if (! SvTIED_mg((SV*)hv, 'P'))
996 while (entry = hv_iternext(hv)) {
1002 sv_setiv(sv, (IV)i);
1007 Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg)
1010 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
1015 /* caller is responsible for stack switching/cleanup */
1017 S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val)
1023 PUSHs(SvTIED_obj(sv, mg));
1026 if (mg->mg_len >= 0)
1027 PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len)));
1028 else if (mg->mg_len == HEf_SVKEY)
1029 PUSHs((SV*)mg->mg_ptr);
1031 else if (mg->mg_type == 'p') {
1032 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
1040 return call_method(meth, flags);
1044 S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth)
1050 PUSHSTACKi(PERLSI_MAGIC);
1052 if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) {
1053 sv_setsv(sv, *PL_stack_sp--);
1063 Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg)
1065 magic_methpack(sv,mg,"FETCH");
1067 mg->mg_flags |= MGf_GSKIP;
1072 Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
1076 PUSHSTACKi(PERLSI_MAGIC);
1077 magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
1084 Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg)
1086 return magic_methpack(sv,mg,"DELETE");
1091 Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
1098 PUSHSTACKi(PERLSI_MAGIC);
1099 if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
1100 sv = *PL_stack_sp--;
1101 retval = (U32) SvIV(sv)-1;
1110 Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
1115 PUSHSTACKi(PERLSI_MAGIC);
1117 XPUSHs(SvTIED_obj(sv, mg));
1119 call_method("CLEAR", G_SCALAR|G_DISCARD);
1126 Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
1129 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
1133 PUSHSTACKi(PERLSI_MAGIC);
1136 PUSHs(SvTIED_obj(sv, mg));
1141 if (call_method(meth, G_SCALAR))
1142 sv_setsv(key, *PL_stack_sp--);
1151 Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg)
1153 return magic_methpack(sv,mg,"EXISTS");
1157 Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
1168 svp = av_fetch(GvAV(gv),
1169 atoi(MgPV(mg,n_a)), FALSE);
1170 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
1172 else if (ckWARN_d(WARN_INTERNAL))
1173 Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n");
1178 Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg)
1181 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
1186 Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg)
1189 av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
1194 Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg)
1196 SV* lsv = LvTARG(sv);
1198 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1199 mg = mg_find(lsv, 'g');
1200 if (mg && mg->mg_len >= 0) {
1204 sv_pos_b2u(lsv, &i);
1205 sv_setiv(sv, i + PL_curcop->cop_arybase);
1214 Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg)
1216 SV* lsv = LvTARG(sv);
1224 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1225 mg = mg_find(lsv, 'g');
1229 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1230 mg = mg_find(lsv, 'g');
1232 else if (!SvOK(sv)) {
1236 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1238 pos = SvIV(sv) - PL_curcop->cop_arybase;
1241 ulen = sv_len_utf8(lsv);
1258 sv_pos_u2b(lsv, &p, 0);
1263 mg->mg_flags &= ~MGf_MINMATCH;
1269 Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg)
1271 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1273 gv_efullname3(sv,((GV*)sv), "*");
1277 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1282 Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg)
1291 if (*s == '*' && s[1])
1293 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1298 GvGP(sv) = gp_ref(GvGP(gv));
1303 Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg)
1306 SV *lsv = LvTARG(sv);
1307 char *tmps = SvPV(lsv,len);
1308 I32 offs = LvTARGOFF(sv);
1309 I32 rem = LvTARGLEN(sv);
1313 if (rem + offs > len)
1315 sv_setpvn(sv, tmps + offs, (STRLEN)rem);
1320 Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
1323 char *tmps = SvPV(sv,len);
1324 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1329 Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg)
1332 TAINT_IF((mg->mg_len & 1) ||
1333 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1338 Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg)
1341 if (PL_localizing) {
1342 if (PL_localizing == 1)
1347 else if (PL_tainted)
1355 Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg)
1357 SV *lsv = LvTARG(sv);
1359 unsigned long retnum;
1369 s = (unsigned char *) SvPV(lsv, lsvlen);
1370 offset = LvTARGOFF(sv);
1371 size = LvTARGLEN(sv);
1372 len = (offset + size + 7) / 8;
1374 /* Copied from pp_vec() */
1382 if (offset >= lsvlen)
1385 retnum = (unsigned long) s[offset] << 8;
1387 else if (size == 32) {
1388 if (offset >= lsvlen)
1390 else if (offset + 1 >= lsvlen)
1391 retnum = (unsigned long) s[offset] << 24;
1392 else if (offset + 2 >= lsvlen)
1393 retnum = ((unsigned long) s[offset] << 24) +
1394 ((unsigned long) s[offset + 1] << 16);
1396 retnum = ((unsigned long) s[offset] << 24) +
1397 ((unsigned long) s[offset + 1] << 16) +
1398 (s[offset + 2] << 8);
1403 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
1408 else if (size == 16)
1409 retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
1410 else if (size == 32)
1411 retnum = ((unsigned long) s[offset] << 24) +
1412 ((unsigned long) s[offset + 1] << 16) +
1413 (s[offset + 2] << 8) + s[offset+3];
1416 sv_setuv(sv, (UV)retnum);
1421 Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg)
1423 do_vecset(sv); /* XXX slurp this routine */
1428 Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg)
1431 if (LvTARGLEN(sv)) {
1433 SV *ahv = LvTARG(sv);
1434 if (SvTYPE(ahv) == SVt_PVHV) {
1435 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
1440 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
1446 AV* av = (AV*)LvTARG(sv);
1447 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1448 targ = AvARRAY(av)[LvTARGOFF(sv)];
1450 if (targ && targ != &PL_sv_undef) {
1451 dTHR; /* just for SvREFCNT_dec */
1452 /* somebody else defined it for us */
1453 SvREFCNT_dec(LvTARG(sv));
1454 LvTARG(sv) = SvREFCNT_inc(targ);
1456 SvREFCNT_dec(mg->mg_obj);
1457 mg->mg_obj = Nullsv;
1458 mg->mg_flags &= ~MGf_REFCOUNTED;
1463 sv_setsv(sv, targ ? targ : &PL_sv_undef);
1468 Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg)
1473 sv_setsv(LvTARG(sv), sv);
1474 SvSETMAGIC(LvTARG(sv));
1480 Perl_vivify_defelem(pTHX_ SV *sv)
1482 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1486 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1489 SV *ahv = LvTARG(sv);
1491 if (SvTYPE(ahv) == SVt_PVHV) {
1492 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
1497 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
1501 if (!value || value == &PL_sv_undef)
1502 Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a));
1505 AV* av = (AV*)LvTARG(sv);
1506 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1507 LvTARG(sv) = Nullsv; /* array can't be extended */
1509 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1510 if (!svp || (value = *svp) == &PL_sv_undef)
1511 Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv));
1514 (void)SvREFCNT_inc(value);
1515 SvREFCNT_dec(LvTARG(sv));
1518 SvREFCNT_dec(mg->mg_obj);
1519 mg->mg_obj = Nullsv;
1520 mg->mg_flags &= ~MGf_REFCOUNTED;
1524 Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
1526 AV *av = (AV*)mg->mg_obj;
1527 SV **svp = AvARRAY(av);
1528 I32 i = AvFILLp(av);
1530 if (svp[i] && svp[i] != &PL_sv_undef) {
1531 if (!SvWEAKREF(svp[i]))
1532 Perl_croak(aTHX_ "panic: magic_killbackrefs");
1533 /* XXX Should we check that it hasn't changed? */
1536 SvWEAKREF_off(svp[i]);
1537 svp[i] = &PL_sv_undef;
1545 Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg)
1553 Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg)
1555 sv_unmagic(sv, 'B');
1561 Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg)
1563 sv_unmagic(sv, 'f');
1569 Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg)
1571 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1573 if (uf && uf->uf_set)
1574 (*uf->uf_set)(uf->uf_index, sv);
1579 Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg)
1581 regexp *re = (regexp *)mg->mg_obj;
1586 #ifdef USE_LOCALE_COLLATE
1588 Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg)
1591 * RenE<eacute> Descartes said "I think not."
1592 * and vanished with a faint plop.
1595 Safefree(mg->mg_ptr);
1601 #endif /* USE_LOCALE_COLLATE */
1604 Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
1610 switch (*mg->mg_ptr) {
1611 case '\001': /* ^A */
1612 sv_setsv(PL_bodytarget, sv);
1614 case '\002': /* ^B */
1615 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1616 if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) {
1617 PL_compiling.cop_warnings = WARN_ALL;
1618 PL_dowarn |= G_WARN_ONCE ;
1620 else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize))
1621 PL_compiling.cop_warnings = WARN_NONE;
1623 if (specialWARN(PL_compiling.cop_warnings))
1624 PL_compiling.cop_warnings = newSVsv(sv) ;
1626 sv_setsv(PL_compiling.cop_warnings, sv);
1627 if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE))
1628 PL_dowarn |= G_WARN_ONCE ;
1633 case '\003': /* ^C */
1634 PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1637 case '\004': /* ^D */
1638 PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1639 DEBUG_x(dump_all());
1641 case '\005': /* ^E */
1643 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1646 SetLastError( SvIV(sv) );
1649 /* will anyone ever use this? */
1650 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1655 case '\006': /* ^F */
1656 PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1658 case '\010': /* ^H */
1659 PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1661 case '\011': /* ^I */ /* NOT \t in EBCDIC */
1663 Safefree(PL_inplace);
1665 PL_inplace = savepv(SvPV(sv,len));
1667 PL_inplace = Nullch;
1669 case '\017': /* ^O */
1671 Safefree(PL_osname);
1673 PL_osname = savepv(SvPV(sv,len));
1677 case '\020': /* ^P */
1678 PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1679 if (PL_perldb && !PL_DBsingle)
1682 case '\024': /* ^T */
1684 PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1686 PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1689 case '\027': /* ^W */
1690 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1691 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1692 PL_dowarn = (PL_dowarn & ~G_WARN_ON)
1693 | (i ? G_WARN_ON : G_WARN_OFF) ;
1697 if (PL_localizing) {
1698 if (PL_localizing == 1)
1699 save_sptr((SV**)&PL_last_in_gv);
1701 else if (SvOK(sv) && GvIO(PL_last_in_gv))
1702 IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
1705 Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
1706 IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1707 IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1710 Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
1711 IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1712 IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1715 IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1718 IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1719 if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
1720 IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
1723 IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1727 IO *io = GvIOp(PL_defoutgv);
1728 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1729 IoFLAGS(io) &= ~IOf_FLUSH;
1731 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1732 PerlIO *ofp = IoOFP(io);
1734 (void)PerlIO_flush(ofp);
1735 IoFLAGS(io) |= IOf_FLUSH;
1741 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1742 PL_multiline = (i != 0);
1745 SvREFCNT_dec(PL_nrs);
1746 PL_nrs = newSVsv(sv);
1747 SvREFCNT_dec(PL_rs);
1748 PL_rs = SvREFCNT_inc(PL_nrs);
1753 if (SvOK(sv) || SvGMAGICAL(sv))
1754 PL_ors = savepv(SvPV(sv,PL_orslen));
1763 PL_ofs = savepv(SvPV(sv, PL_ofslen));
1768 PL_ofmt = savepv(SvPV(sv,len));
1771 PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1774 #ifdef COMPLEX_STATUS
1775 if (PL_localizing == 2) {
1776 PL_statusvalue = LvTARGOFF(sv);
1777 PL_statusvalue_vms = LvTARGLEN(sv);
1781 #ifdef VMSISH_STATUS
1783 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1786 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1789 SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
1790 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1793 PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1794 if (PL_delaymagic) {
1795 PL_delaymagic |= DM_RUID;
1796 break; /* don't do magic till later */
1799 (void)setruid((Uid_t)PL_uid);
1802 (void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
1804 #ifdef HAS_SETRESUID
1805 (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
1807 if (PL_uid == PL_euid) /* special case $< = $> */
1808 (void)PerlProc_setuid(PL_uid);
1810 PL_uid = (I32)PerlProc_getuid();
1811 Perl_croak(aTHX_ "setruid() not implemented");
1816 PL_uid = (I32)PerlProc_getuid();
1817 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1820 PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1821 if (PL_delaymagic) {
1822 PL_delaymagic |= DM_EUID;
1823 break; /* don't do magic till later */
1826 (void)seteuid((Uid_t)PL_euid);
1829 (void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
1831 #ifdef HAS_SETRESUID
1832 (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
1834 if (PL_euid == PL_uid) /* special case $> = $< */
1835 PerlProc_setuid(PL_euid);
1837 PL_euid = (I32)PerlProc_geteuid();
1838 Perl_croak(aTHX_ "seteuid() not implemented");
1843 PL_euid = (I32)PerlProc_geteuid();
1844 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1847 PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1848 if (PL_delaymagic) {
1849 PL_delaymagic |= DM_RGID;
1850 break; /* don't do magic till later */
1853 (void)setrgid((Gid_t)PL_gid);
1856 (void)setregid((Gid_t)PL_gid, (Gid_t)-1);
1858 #ifdef HAS_SETRESGID
1859 (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
1861 if (PL_gid == PL_egid) /* special case $( = $) */
1862 (void)PerlProc_setgid(PL_gid);
1864 PL_gid = (I32)PerlProc_getgid();
1865 Perl_croak(aTHX_ "setrgid() not implemented");
1870 PL_gid = (I32)PerlProc_getgid();
1871 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1874 #ifdef HAS_SETGROUPS
1876 char *p = SvPV(sv, len);
1877 Groups_t gary[NGROUPS];
1881 PL_egid = I_V(atol(p));
1882 for (i = 0; i < NGROUPS; ++i) {
1883 while (*p && !isSPACE(*p))
1889 gary[i] = I_V(atol(p));
1892 (void)setgroups(i, gary);
1894 #else /* HAS_SETGROUPS */
1895 PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1896 #endif /* HAS_SETGROUPS */
1897 if (PL_delaymagic) {
1898 PL_delaymagic |= DM_EGID;
1899 break; /* don't do magic till later */
1902 (void)setegid((Gid_t)PL_egid);
1905 (void)setregid((Gid_t)-1, (Gid_t)PL_egid);
1907 #ifdef HAS_SETRESGID
1908 (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
1910 if (PL_egid == PL_gid) /* special case $) = $( */
1911 (void)PerlProc_setgid(PL_egid);
1913 PL_egid = (I32)PerlProc_getegid();
1914 Perl_croak(aTHX_ "setegid() not implemented");
1919 PL_egid = (I32)PerlProc_getegid();
1920 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1923 PL_chopset = SvPV_force(sv,len);
1929 /* See if all the arguments are contiguous in memory */
1930 for (i = 1; i < PL_origargc; i++) {
1931 if (PL_origargv[i] == s + 1
1933 || PL_origargv[i] == s + 2
1938 s += strlen(s); /* this one is ok too */
1943 /* can grab env area too? */
1944 if (PL_origenviron && (PL_origenviron[0] == s + 1
1946 || (PL_origenviron[0] == s + 9 && (s += 8))
1949 my_setenv("NoNe SuCh", Nullch);
1950 /* force copy of environment */
1951 for (i = 0; PL_origenviron[i]; i++)
1952 if (PL_origenviron[i] == s + 1) {
1959 PL_origalen = s - PL_origargv[0];
1961 s = SvPV_force(sv,len);
1963 if (i >= PL_origalen) {
1965 /* don't allow system to limit $0 seen by script */
1966 /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
1967 Copy(s, PL_origargv[0], i, char);
1968 s = PL_origargv[0]+i;
1972 Copy(s, PL_origargv[0], i, char);
1973 s = PL_origargv[0]+i;
1975 while (++i < PL_origalen)
1977 s = PL_origargv[0]+i;
1978 for (i = 1; i < PL_origargc; i++)
1979 PL_origargv[i] = Nullch;
1984 sv_setsv(thr->errsv, sv);
1986 #endif /* USE_THREADS */
1993 Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg)
1996 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
1997 (unsigned long)thr, (unsigned long)sv);)
1999 Perl_croak(aTHX_ "panic: magic_mutexfree");
2000 MUTEX_DESTROY(MgMUTEXP(mg));
2001 COND_DESTROY(MgCONDP(mg));
2004 #endif /* USE_THREADS */
2007 Perl_whichsig(pTHX_ char *sig)
2009 register char **sigv;
2011 for (sigv = PL_sig_name+1; *sigv; sigv++)
2012 if (strEQ(sig,*sigv))
2013 return PL_sig_num[sigv - PL_sig_name];
2015 if (strEQ(sig,"CHLD"))
2019 if (strEQ(sig,"CLD"))
2028 Perl_sighandler(int sig)
2034 SV *sv, *tSv = PL_Sv;
2038 I32 o_save_i = PL_savestack_ix, type;
2041 if (PL_savestack_ix + 15 <= PL_savestack_max)
2043 if (PL_markstack_ptr < PL_markstack_max - 2)
2045 if (PL_retstack_ix < PL_retstack_max - 2)
2047 if (PL_scopestack_ix < PL_scopestack_max - 3)
2050 if (!PL_psig_ptr[sig])
2051 Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n",
2054 /* Max number of items pushed there is 3*n or 4. We cannot fix
2055 infinity, so we fix 4 (in fact 5): */
2057 PL_savestack_ix += 5; /* Protect save in progress. */
2058 o_save_i = PL_savestack_ix;
2059 SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags);
2062 PL_markstack_ptr++; /* Protect mark. */
2065 PL_retstack[PL_retstack_ix] = NULL;
2068 PL_scopestack_ix += 1;
2069 /* sv_2cv is too complicated, try a simpler variant first: */
2070 if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig]))
2071 || SvTYPE(cv) != SVt_PVCV)
2072 cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE);
2074 if (!cv || !CvROOT(cv)) {
2075 if (ckWARN(WARN_SIGNAL))
2076 Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n",
2077 PL_sig_name[sig], (gv ? GvENAME(gv)
2084 if(PL_psig_name[sig]) {
2085 sv = SvREFCNT_inc(PL_psig_name[sig]);
2089 sv = sv_newmortal();
2090 sv_setpv(sv,PL_sig_name[sig]);
2093 PUSHSTACKi(PERLSI_SIGNAL);
2098 call_sv((SV*)cv, G_DISCARD);
2103 PL_savestack_ix -= 8; /* Unprotect save in progress. */
2109 PL_scopestack_ix -= 1;
2112 PL_op = myop; /* Apparently not needed... */
2114 PL_Sv = tSv; /* Restore global temporaries. */
2126 restore_magic(pTHXo_ void *p)
2129 MGS* mgs = SSPTR((I32)p, MGS*);
2130 SV* sv = mgs->mgs_sv;
2135 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2138 SvFLAGS(sv) |= mgs->mgs_flags;
2142 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2145 mgs->mgs_sv = NULL; /* mark the MGS structure as restored */
2147 /* If we're still on top of the stack, pop us off. (That condition
2148 * will be satisfied if restore_magic was called explicitly, but *not*
2149 * if it's being called via leave_scope.)
2150 * The reason for doing this is that otherwise, things like sv_2cv()
2151 * may leave alloc gunk on the savestack, and some code
2152 * (e.g. sighandler) doesn't expect that...
2154 if (PL_savestack_ix == mgs->mgs_ss_ix)
2156 I32 popval = SSPOPINT;
2157 assert(popval == SAVEt_DESTRUCTOR);
2158 PL_savestack_ix -= 2;
2160 assert(popval == SAVEt_ALLOC);
2162 PL_savestack_ix -= popval;
2168 unwind_handler_stack(pTHXo_ void *p)
2171 U32 flags = *(U32*)p;
2174 PL_savestack_ix -= 5; /* Unprotect save in progress. */
2175 /* cxstack_ix-- Not needed, die already unwound it. */
2177 SvREFCNT_dec(sig_sv);