3 * Copyright (c) 1991-2000, 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)
30 static void restore_magic(pTHXo_ void *p);
31 static void unwind_handler_stack(pTHXo_ void *p);
34 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
42 /* MGS is typedef'ed to struct magic_state in perl.h */
45 S_save_magic(pTHX_ I32 mgs_ix, SV *sv)
49 assert(SvMAGICAL(sv));
51 SAVEDESTRUCTOR_X(restore_magic, (void*)mgs_ix);
53 mgs = SSPTR(mgs_ix, MGS*);
55 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
56 mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */
60 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
64 =for apidoc mg_magical
66 Turns on the magical status of an SV. See C<sv_magic>.
72 Perl_mg_magical(pTHX_ SV *sv)
75 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
76 MGVTBL* vtbl = mg->mg_virtual;
78 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
82 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
91 Do magic after a value is retrieved from the SV. See C<sv_magic>.
97 Perl_mg_get(pTHX_ SV *sv)
105 mgs_ix = SSNEW(sizeof(MGS));
106 save_magic(mgs_ix, sv);
109 while ((mg = *mgp) != 0) {
110 MGVTBL* vtbl = mg->mg_virtual;
111 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
112 CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg);
113 /* Ignore this magic if it's been deleted */
114 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
115 (mg->mg_flags & MGf_GSKIP))
116 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
118 /* Advance to next magic (complicated by possible deletion) */
119 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
120 mgp = &mg->mg_moremagic;
124 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
127 restore_magic(aTHXo_ (void*)mgs_ix);
134 Do magic after a value is assigned to the SV. See C<sv_magic>.
140 Perl_mg_set(pTHX_ SV *sv)
147 mgs_ix = SSNEW(sizeof(MGS));
148 save_magic(mgs_ix, sv);
150 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
151 MGVTBL* vtbl = mg->mg_virtual;
152 nextmg = mg->mg_moremagic; /* it may delete itself */
153 if (mg->mg_flags & MGf_GSKIP) {
154 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
155 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
157 if (vtbl && vtbl->svt_set)
158 CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg);
161 restore_magic(aTHXo_ (void*)mgs_ix);
166 =for apidoc mg_length
168 Report on the SV's length. See C<sv_magic>.
174 Perl_mg_length(pTHX_ SV *sv)
180 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
181 MGVTBL* vtbl = mg->mg_virtual;
182 if (vtbl && vtbl->svt_len) {
185 mgs_ix = SSNEW(sizeof(MGS));
186 save_magic(mgs_ix, sv);
187 /* omit MGf_GSKIP -- not changed here */
188 len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
189 restore_magic(aTHXo_ (void*)mgs_ix);
194 junk = SvPV(sv, len);
199 Perl_mg_size(pTHX_ SV *sv)
204 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
205 MGVTBL* vtbl = mg->mg_virtual;
206 if (vtbl && vtbl->svt_len) {
209 mgs_ix = SSNEW(sizeof(MGS));
210 save_magic(mgs_ix, sv);
211 /* omit MGf_GSKIP -- not changed here */
212 len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
213 restore_magic(aTHXo_ (void*)mgs_ix);
220 len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
225 Perl_croak(aTHX_ "Size magic not implemented");
234 Clear something magical that the SV represents. See C<sv_magic>.
240 Perl_mg_clear(pTHX_ SV *sv)
245 mgs_ix = SSNEW(sizeof(MGS));
246 save_magic(mgs_ix, sv);
248 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
249 MGVTBL* vtbl = mg->mg_virtual;
250 /* omit GSKIP -- never set here */
252 if (vtbl && vtbl->svt_clear)
253 CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg);
256 restore_magic(aTHXo_ (void*)mgs_ix);
263 Finds the magic pointer for type matching the SV. See C<sv_magic>.
269 Perl_mg_find(pTHX_ SV *sv, int type)
272 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
273 if (mg->mg_type == type)
282 Copies the magic from one SV to another. See C<sv_magic>.
288 Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen)
292 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
293 if (isUPPER(mg->mg_type)) {
295 mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj,
296 toLOWER(mg->mg_type), key, klen);
306 Free any magic storage used by the SV. See C<sv_magic>.
312 Perl_mg_free(pTHX_ SV *sv)
316 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
317 MGVTBL* vtbl = mg->mg_virtual;
318 moremagic = mg->mg_moremagic;
319 if (vtbl && vtbl->svt_free)
320 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
321 if (mg->mg_ptr && mg->mg_type != 'g')
323 Safefree(mg->mg_ptr);
324 else if (mg->mg_len == HEf_SVKEY)
325 SvREFCNT_dec((SV*)mg->mg_ptr);
326 if (mg->mg_flags & MGf_REFCOUNTED)
327 SvREFCNT_dec(mg->mg_obj);
334 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
339 Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
344 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
345 if (mg->mg_obj) /* @+ */
348 return rx->lastparen;
355 Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
364 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
368 if (paren <= rx->nparens &&
369 (s = rx->startp[paren]) != -1 &&
370 (t = rx->endp[paren]) != -1)
372 if (mg->mg_obj) /* @+ */
383 Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
391 switch (*mg->mg_ptr) {
392 case '1': case '2': case '3': case '4':
393 case '5': case '6': case '7': case '8': case '9': case '&':
394 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
396 paren = atoi(mg->mg_ptr);
398 if (paren <= rx->nparens &&
399 (s1 = rx->startp[paren]) != -1 &&
400 (t1 = rx->endp[paren]) != -1)
404 if (i > 0 && (PL_curpm->op_pmdynflags & PMdf_UTF8) && !IN_BYTE) {
405 char *s = rx->subbeg + s1;
406 char *send = rx->subbeg + t1;
419 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
420 paren = rx->lastparen;
426 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
427 if (rx->startp[0] != -1) {
438 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
439 if (rx->endp[0] != -1) {
440 i = rx->sublen - rx->endp[0];
450 return (STRLEN)PL_ofslen;
452 return (STRLEN)PL_orslen;
455 if (!SvPOK(sv) && SvNIOK(sv)) {
465 Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
473 switch (*mg->mg_ptr) {
474 case '\001': /* ^A */
475 sv_setsv(sv, PL_bodytarget);
477 case '\003': /* ^C */
478 sv_setiv(sv, (IV)PL_minus_c);
481 case '\004': /* ^D */
482 sv_setiv(sv, (IV)(PL_debug & 32767));
483 #if defined(YYDEBUG) && defined(DEBUGGING)
484 PL_yydebug = (PL_debug & 1);
487 case '\005': /* ^E */
488 #ifdef MACOS_TRADITIONAL
492 sv_setnv(sv,(double)gMacPerl_OSErr);
493 sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : "");
498 # include <descrip.h>
499 # include <starlet.h>
501 $DESCRIPTOR(msgdsc,msg);
502 sv_setnv(sv,(NV) vaxc$errno);
503 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
504 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
510 if (!(_emx_env & 0x200)) { /* Under DOS */
511 sv_setnv(sv, (NV)errno);
512 sv_setpv(sv, errno ? Strerror(errno) : "");
514 if (errno != errno_isOS2) {
515 int tmp = _syserrno();
516 if (tmp) /* 2nd call to _syserrno() makes it 0 */
519 sv_setnv(sv, (NV)Perl_rc);
520 sv_setpv(sv, os2error(Perl_rc));
525 DWORD dwErr = GetLastError();
526 sv_setnv(sv, (NV)dwErr);
529 PerlProc_GetOSError(sv, dwErr);
536 sv_setnv(sv, (NV)errno);
537 sv_setpv(sv, errno ? Strerror(errno) : "");
542 SvNOK_on(sv); /* what a wonderful hack! */
544 case '\006': /* ^F */
545 sv_setiv(sv, (IV)PL_maxsysfd);
547 case '\010': /* ^H */
548 sv_setiv(sv, (IV)PL_hints);
550 case '\011': /* ^I */ /* NOT \t in EBCDIC */
552 sv_setpv(sv, PL_inplace);
554 sv_setsv(sv, &PL_sv_undef);
556 case '\017': /* ^O */
557 sv_setpv(sv, PL_osname);
559 case '\020': /* ^P */
560 sv_setiv(sv, (IV)PL_perldb);
562 case '\023': /* ^S */
565 if (PL_lex_state != LEX_NOTPARSING)
573 case '\024': /* ^T */
575 sv_setnv(sv, PL_basetime);
577 sv_setiv(sv, (IV)PL_basetime);
580 case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
581 if (*(mg->mg_ptr+1) == '\0')
582 sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
583 else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) {
584 if (PL_compiling.cop_warnings == pWARN_NONE ||
585 PL_compiling.cop_warnings == pWARN_STD)
587 sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
589 else if (PL_compiling.cop_warnings == pWARN_ALL) {
590 sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
593 sv_setsv(sv, PL_compiling.cop_warnings);
597 else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS"))
598 sv_setiv(sv, (IV)PL_widesyscalls);
600 case '1': case '2': case '3': case '4':
601 case '5': case '6': case '7': case '8': case '9': case '&':
602 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
606 * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
607 * XXX Does the new way break anything?
609 paren = atoi(mg->mg_ptr);
611 if (paren <= rx->nparens &&
612 (s1 = rx->startp[paren]) != -1 &&
613 (t1 = rx->endp[paren]) != -1)
621 was_tainted = PL_tainted;
625 if ((PL_curpm->op_pmdynflags & PMdf_UTF8) && !IN_BYTE)
630 PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
635 sv_setsv(sv,&PL_sv_undef);
638 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
639 paren = rx->lastparen;
643 sv_setsv(sv,&PL_sv_undef);
646 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
647 if ((s = rx->subbeg) && rx->startp[0] != -1) {
652 sv_setsv(sv,&PL_sv_undef);
655 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
656 if (rx->subbeg && rx->endp[0] != -1) {
657 s = rx->subbeg + rx->endp[0];
658 i = rx->sublen - rx->endp[0];
662 sv_setsv(sv,&PL_sv_undef);
666 if (GvIO(PL_last_in_gv)) {
667 sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv)));
673 sv_setiv(sv, (IV)STATUS_CURRENT);
674 #ifdef COMPLEX_STATUS
675 LvTARGOFF(sv) = PL_statusvalue;
676 LvTARGLEN(sv) = PL_statusvalue_vms;
681 s = IoTOP_NAME(GvIOp(PL_defoutgv));
685 sv_setpv(sv,GvENAME(PL_defoutgv));
690 s = IoFMT_NAME(GvIOp(PL_defoutgv));
692 s = GvENAME(PL_defoutgv);
697 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
700 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
703 sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
711 WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
714 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
717 sv_setpvn(sv,PL_ofs,PL_ofslen);
720 sv_setpvn(sv,PL_ors,PL_orslen);
723 sv_setpv(sv,PL_ofmt);
727 sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
728 sv_setpv(sv, errno ? Strerror(errno) : "");
731 int saveerrno = errno;
732 sv_setnv(sv, (NV)errno);
734 if (errno == errno_isOS2 || errno == errno_isOS2_set)
735 sv_setpv(sv, os2error(Perl_rc));
738 sv_setpv(sv, errno ? Strerror(errno) : "");
742 SvNOK_on(sv); /* what a wonderful hack! */
745 sv_setiv(sv, (IV)PL_uid);
748 sv_setiv(sv, (IV)PL_euid);
751 sv_setiv(sv, (IV)PL_gid);
753 Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid);
757 sv_setiv(sv, (IV)PL_egid);
759 Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid);
764 Groups_t gary[NGROUPS];
765 i = getgroups(NGROUPS,gary);
767 Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]);
770 (void)SvIOK_on(sv); /* what a wonderful hack! */
774 #ifndef MACOS_TRADITIONAL
780 sv_setsv(sv, thr->errsv);
782 #endif /* USE_THREADS */
788 Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg)
790 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
792 if (uf && uf->uf_val)
793 (*uf->uf_val)(uf->uf_index, sv);
798 Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
809 #ifdef DYNAMIC_ENV_FETCH
810 /* We just undefd an environment var. Is a replacement */
811 /* waiting in the wings? */
814 if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
815 s = SvPV(*valp, len);
819 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
820 /* And you'll never guess what the dog had */
821 /* in its mouth... */
823 MgTAINTEDDIR_off(mg);
825 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
826 char pathbuf[256], eltbuf[256], *cp, *elt = s;
830 do { /* DCL$PATH may be a search list */
831 while (1) { /* as may dev portion of any element */
832 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
833 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
834 cando_by_name(S_IWUSR,0,elt) ) {
839 if ((cp = strchr(elt, ':')) != Nullch)
841 if (my_trnlnm(elt, eltbuf, j++))
847 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
850 if (s && klen == 4 && strEQ(ptr,"PATH")) {
851 char *strend = s + len;
856 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
859 if (i >= sizeof tmpbuf /* too long -- assume the worst */
861 || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
868 #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
874 Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg)
877 my_setenv(MgPV(mg,n_a),Nullch);
882 Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
885 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
891 magic_clear_all_env(sv,mg);
892 hv_iterinit((HV*)sv);
893 while ((entry = hv_iternext((HV*)sv))) {
895 my_setenv(hv_iterkey(entry, &keylen),
896 SvPV(hv_iterval((HV*)sv, entry), n_a));
904 Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
907 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
909 # ifdef PERL_IMPLICIT_SYS
913 char *envv = GetEnvironmentStrings();
917 char *end = strchr(cur,'=');
918 if (end && end != cur) {
920 my_setenv(cur,Nullch);
922 cur = end + strlen(end+1)+2;
924 else if ((len = strlen(cur)))
927 FreeEnvironmentStrings(envv);
931 for (i = 0; environ[i]; i++)
932 safesysfree(environ[i]);
934 # ifndef PERL_USE_SAFE_PUTENV
937 if (environ == PL_origenviron)
938 environ = (char**)safesysmalloc(sizeof(char*));
940 for (i = 0; environ[i]; i++)
941 safesysfree(environ[i]);
942 # endif /* PERL_USE_SAFE_PUTENV */
943 # endif /* __CYGWIN__ */
948 # endif /* PERL_IMPLICIT_SYS */
955 Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
959 /* Are we fetching a signal entry? */
960 i = whichsig(MgPV(mg,n_a));
963 sv_setsv(sv,PL_psig_ptr[i]);
965 Sighandler_t sigstate = rsignal_state(i);
967 /* cache state so we don't fetch it again */
968 if(sigstate == SIG_IGN)
969 sv_setpv(sv,"IGNORE");
971 sv_setsv(sv,&PL_sv_undef);
972 PL_psig_ptr[i] = SvREFCNT_inc(sv);
979 Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg)
983 /* Are we clearing a signal entry? */
984 i = whichsig(MgPV(mg,n_a));
987 SvREFCNT_dec(PL_psig_ptr[i]);
990 if(PL_psig_name[i]) {
991 SvREFCNT_dec(PL_psig_name[i]);
999 Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
1009 if (strEQ(s,"__DIE__"))
1011 else if (strEQ(s,"__WARN__"))
1014 Perl_croak(aTHX_ "No such hook: %s", s);
1022 i = whichsig(s); /* ...no, a brick */
1024 if (ckWARN(WARN_SIGNAL))
1025 Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s);
1028 SvREFCNT_dec(PL_psig_name[i]);
1029 SvREFCNT_dec(PL_psig_ptr[i]);
1030 PL_psig_ptr[i] = SvREFCNT_inc(sv);
1031 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
1032 PL_psig_name[i] = newSVpvn(s, len);
1033 SvREADONLY_on(PL_psig_name[i]);
1035 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
1037 (void)rsignal(i, PL_sighandlerp);
1039 *svp = SvREFCNT_inc(sv);
1042 s = SvPV_force(sv,len);
1043 if (strEQ(s,"IGNORE")) {
1045 (void)rsignal(i, SIG_IGN);
1049 else if (strEQ(s,"DEFAULT") || !*s) {
1051 (void)rsignal(i, SIG_DFL);
1057 * We should warn if HINT_STRICT_REFS, but without
1058 * access to a known hint bit in a known OP, we can't
1059 * tell whether HINT_STRICT_REFS is in force or not.
1061 if (!strchr(s,':') && !strchr(s,'\''))
1062 sv_insert(sv, 0, 0, "main::", 6);
1064 (void)rsignal(i, PL_sighandlerp);
1066 *svp = SvREFCNT_inc(sv);
1070 #endif /* !PERL_MICRO */
1073 Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
1075 PL_sub_generation++;
1080 Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg)
1082 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
1083 PL_amagic_generation++;
1089 Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg)
1091 HV *hv = (HV*)LvTARG(sv);
1096 (void) hv_iterinit(hv);
1097 if (! SvTIED_mg((SV*)hv, 'P'))
1101 while ((entry = hv_iternext(hv))) {
1107 sv_setiv(sv, (IV)i);
1112 Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg)
1115 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
1120 /* caller is responsible for stack switching/cleanup */
1122 S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val)
1128 PUSHs(SvTIED_obj(sv, mg));
1131 if (mg->mg_len >= 0)
1132 PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len)));
1133 else if (mg->mg_len == HEf_SVKEY)
1134 PUSHs((SV*)mg->mg_ptr);
1136 else if (mg->mg_type == 'p') {
1137 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
1145 return call_method(meth, flags);
1149 S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth)
1155 PUSHSTACKi(PERLSI_MAGIC);
1157 if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) {
1158 sv_setsv(sv, *PL_stack_sp--);
1168 Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg)
1170 magic_methpack(sv,mg,"FETCH");
1172 mg->mg_flags |= MGf_GSKIP;
1177 Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
1181 PUSHSTACKi(PERLSI_MAGIC);
1182 magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
1189 Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg)
1191 return magic_methpack(sv,mg,"DELETE");
1196 Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
1203 PUSHSTACKi(PERLSI_MAGIC);
1204 if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
1205 sv = *PL_stack_sp--;
1206 retval = (U32) SvIV(sv)-1;
1215 Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
1220 PUSHSTACKi(PERLSI_MAGIC);
1222 XPUSHs(SvTIED_obj(sv, mg));
1224 call_method("CLEAR", G_SCALAR|G_DISCARD);
1231 Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
1234 const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
1238 PUSHSTACKi(PERLSI_MAGIC);
1241 PUSHs(SvTIED_obj(sv, mg));
1246 if (call_method(meth, G_SCALAR))
1247 sv_setsv(key, *PL_stack_sp--);
1256 Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg)
1258 return magic_methpack(sv,mg,"EXISTS");
1262 Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
1273 svp = av_fetch(GvAV(gv),
1274 atoi(MgPV(mg,n_a)), FALSE);
1275 if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp))))
1277 else if (ckWARN_d(WARN_INTERNAL))
1278 Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n");
1283 Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg)
1286 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
1291 Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg)
1294 av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
1299 Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg)
1301 SV* lsv = LvTARG(sv);
1303 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1304 mg = mg_find(lsv, 'g');
1305 if (mg && mg->mg_len >= 0) {
1309 sv_pos_b2u(lsv, &i);
1310 sv_setiv(sv, i + PL_curcop->cop_arybase);
1319 Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg)
1321 SV* lsv = LvTARG(sv);
1329 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1330 mg = mg_find(lsv, 'g');
1334 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1335 mg = mg_find(lsv, 'g');
1337 else if (!SvOK(sv)) {
1341 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1343 pos = SvIV(sv) - PL_curcop->cop_arybase;
1346 ulen = sv_len_utf8(lsv);
1361 sv_pos_u2b(lsv, &p, 0);
1366 mg->mg_flags &= ~MGf_MINMATCH;
1372 Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg)
1374 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1376 gv_efullname3(sv,((GV*)sv), "*");
1380 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1385 Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg)
1394 if (*s == '*' && s[1])
1396 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1401 GvGP(sv) = gp_ref(GvGP(gv));
1406 Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg)
1409 SV *lsv = LvTARG(sv);
1410 char *tmps = SvPV(lsv,len);
1411 I32 offs = LvTARGOFF(sv);
1412 I32 rem = LvTARGLEN(sv);
1416 if (rem + offs > len)
1418 sv_setpvn(sv, tmps + offs, (STRLEN)rem);
1423 Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
1426 char *tmps = SvPV(sv,len);
1427 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1432 Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg)
1435 TAINT_IF((mg->mg_len & 1) ||
1436 ((mg->mg_len & 2) && mg->mg_obj == sv)); /* kludge */
1441 Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg)
1444 if (PL_localizing) {
1445 if (PL_localizing == 1)
1450 else if (PL_tainted)
1458 Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg)
1460 SV *lsv = LvTARG(sv);
1467 sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv)));
1472 Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg)
1474 do_vecset(sv); /* XXX slurp this routine */
1479 Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg)
1482 if (LvTARGLEN(sv)) {
1484 SV *ahv = LvTARG(sv);
1485 if (SvTYPE(ahv) == SVt_PVHV) {
1486 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
1491 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
1497 AV* av = (AV*)LvTARG(sv);
1498 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1499 targ = AvARRAY(av)[LvTARGOFF(sv)];
1501 if (targ && targ != &PL_sv_undef) {
1502 dTHR; /* just for SvREFCNT_dec */
1503 /* somebody else defined it for us */
1504 SvREFCNT_dec(LvTARG(sv));
1505 LvTARG(sv) = SvREFCNT_inc(targ);
1507 SvREFCNT_dec(mg->mg_obj);
1508 mg->mg_obj = Nullsv;
1509 mg->mg_flags &= ~MGf_REFCOUNTED;
1514 sv_setsv(sv, targ ? targ : &PL_sv_undef);
1519 Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg)
1524 sv_setsv(LvTARG(sv), sv);
1525 SvSETMAGIC(LvTARG(sv));
1531 Perl_vivify_defelem(pTHX_ SV *sv)
1533 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1537 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1540 SV *ahv = LvTARG(sv);
1542 if (SvTYPE(ahv) == SVt_PVHV) {
1543 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
1548 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
1552 if (!value || value == &PL_sv_undef)
1553 Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a));
1556 AV* av = (AV*)LvTARG(sv);
1557 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1558 LvTARG(sv) = Nullsv; /* array can't be extended */
1560 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1561 if (!svp || (value = *svp) == &PL_sv_undef)
1562 Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv));
1565 (void)SvREFCNT_inc(value);
1566 SvREFCNT_dec(LvTARG(sv));
1569 SvREFCNT_dec(mg->mg_obj);
1570 mg->mg_obj = Nullsv;
1571 mg->mg_flags &= ~MGf_REFCOUNTED;
1575 Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
1577 AV *av = (AV*)mg->mg_obj;
1578 SV **svp = AvARRAY(av);
1579 I32 i = AvFILLp(av);
1581 if (svp[i] && svp[i] != &PL_sv_undef) {
1582 if (!SvWEAKREF(svp[i]))
1583 Perl_croak(aTHX_ "panic: magic_killbackrefs");
1584 /* XXX Should we check that it hasn't changed? */
1586 (void)SvOK_off(svp[i]);
1587 SvWEAKREF_off(svp[i]);
1588 svp[i] = &PL_sv_undef;
1596 Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg)
1604 Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg)
1606 sv_unmagic(sv, 'B');
1612 Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg)
1614 sv_unmagic(sv, 'f');
1620 Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg)
1622 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1624 if (uf && uf->uf_set)
1625 (*uf->uf_set)(uf->uf_index, sv);
1630 Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg)
1632 regexp *re = (regexp *)mg->mg_obj;
1637 #ifdef USE_LOCALE_COLLATE
1639 Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg)
1642 * RenE<eacute> Descartes said "I think not."
1643 * and vanished with a faint plop.
1646 Safefree(mg->mg_ptr);
1652 #endif /* USE_LOCALE_COLLATE */
1655 Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
1661 switch (*mg->mg_ptr) {
1662 case '\001': /* ^A */
1663 sv_setsv(PL_bodytarget, sv);
1665 case '\003': /* ^C */
1666 PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1669 case '\004': /* ^D */
1670 PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1671 DEBUG_x(dump_all());
1673 case '\005': /* ^E */
1674 #ifdef MACOS_TRADITIONAL
1675 gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1678 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1681 SetLastError( SvIV(sv) );
1684 /* will anyone ever use this? */
1685 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1691 case '\006': /* ^F */
1692 PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1694 case '\010': /* ^H */
1695 PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1697 case '\011': /* ^I */ /* NOT \t in EBCDIC */
1699 Safefree(PL_inplace);
1701 PL_inplace = savepv(SvPV(sv,len));
1703 PL_inplace = Nullch;
1705 case '\017': /* ^O */
1707 Safefree(PL_osname);
1709 PL_osname = savepv(SvPV(sv,len));
1713 case '\020': /* ^P */
1714 PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1715 if (PL_perldb && !PL_DBsingle)
1718 case '\024': /* ^T */
1720 PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1722 PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1725 case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
1726 if (*(mg->mg_ptr+1) == '\0') {
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) ;
1733 else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) {
1734 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1735 if (!SvPOK(sv) && PL_localizing) {
1736 sv_setpvn(sv, WARN_NONEstring, WARNsize);
1737 PL_compiling.cop_warnings = pWARN_NONE;
1740 if (isWARN_on(sv, WARN_ALL) && !isWARNf_on(sv, WARN_ALL)) {
1741 PL_compiling.cop_warnings = pWARN_ALL;
1742 PL_dowarn |= G_WARN_ONCE ;
1746 int accumulate = 0 ;
1747 char * ptr = (char*)SvPV(sv, len) ;
1748 for (i = 0 ; i < len ; ++i)
1749 accumulate += ptr[i] ;
1751 PL_compiling.cop_warnings = pWARN_NONE;
1753 if (specialWARN(PL_compiling.cop_warnings))
1754 PL_compiling.cop_warnings = newSVsv(sv) ;
1756 sv_setsv(PL_compiling.cop_warnings, sv);
1757 if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE))
1758 PL_dowarn |= G_WARN_ONCE ;
1763 else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS"))
1764 PL_widesyscalls = SvTRUE(sv);
1767 if (PL_localizing) {
1768 if (PL_localizing == 1)
1769 SAVESPTR(PL_last_in_gv);
1771 else if (SvOK(sv) && GvIO(PL_last_in_gv))
1772 IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
1775 Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
1776 IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1777 IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1780 Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
1781 IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
1782 IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1785 IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1788 IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1789 if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
1790 IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
1793 IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1797 IO *io = GvIOp(PL_defoutgv);
1798 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1799 IoFLAGS(io) &= ~IOf_FLUSH;
1801 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1802 PerlIO *ofp = IoOFP(io);
1804 (void)PerlIO_flush(ofp);
1805 IoFLAGS(io) |= IOf_FLUSH;
1811 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1812 PL_multiline = (i != 0);
1815 SvREFCNT_dec(PL_nrs);
1816 PL_nrs = newSVsv(sv);
1817 SvREFCNT_dec(PL_rs);
1818 PL_rs = SvREFCNT_inc(PL_nrs);
1823 if (SvOK(sv) || SvGMAGICAL(sv)) {
1824 s = SvPV(sv,PL_orslen);
1825 PL_ors = savepvn(s,PL_orslen);
1835 PL_ofs = savepv(SvPV(sv, PL_ofslen));
1840 PL_ofmt = savepv(SvPV(sv,len));
1843 PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1846 #ifdef COMPLEX_STATUS
1847 if (PL_localizing == 2) {
1848 PL_statusvalue = LvTARGOFF(sv);
1849 PL_statusvalue_vms = LvTARGLEN(sv);
1853 #ifdef VMSISH_STATUS
1855 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1858 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1861 SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
1862 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1865 PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1866 if (PL_delaymagic) {
1867 PL_delaymagic |= DM_RUID;
1868 break; /* don't do magic till later */
1871 (void)setruid((Uid_t)PL_uid);
1874 (void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
1876 #ifdef HAS_SETRESUID
1877 (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
1879 if (PL_uid == PL_euid) /* special case $< = $> */
1880 (void)PerlProc_setuid(PL_uid);
1882 PL_uid = PerlProc_getuid();
1883 Perl_croak(aTHX_ "setruid() not implemented");
1888 PL_uid = PerlProc_getuid();
1889 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1892 PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1893 if (PL_delaymagic) {
1894 PL_delaymagic |= DM_EUID;
1895 break; /* don't do magic till later */
1898 (void)seteuid((Uid_t)PL_euid);
1901 (void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
1903 #ifdef HAS_SETRESUID
1904 (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
1906 if (PL_euid == PL_uid) /* special case $> = $< */
1907 PerlProc_setuid(PL_euid);
1909 PL_euid = PerlProc_geteuid();
1910 Perl_croak(aTHX_ "seteuid() not implemented");
1915 PL_euid = PerlProc_geteuid();
1916 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1919 PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1920 if (PL_delaymagic) {
1921 PL_delaymagic |= DM_RGID;
1922 break; /* don't do magic till later */
1925 (void)setrgid((Gid_t)PL_gid);
1928 (void)setregid((Gid_t)PL_gid, (Gid_t)-1);
1930 #ifdef HAS_SETRESGID
1931 (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
1933 if (PL_gid == PL_egid) /* special case $( = $) */
1934 (void)PerlProc_setgid(PL_gid);
1936 PL_gid = PerlProc_getgid();
1937 Perl_croak(aTHX_ "setrgid() not implemented");
1942 PL_gid = PerlProc_getgid();
1943 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1946 #ifdef HAS_SETGROUPS
1948 char *p = SvPV(sv, len);
1949 Groups_t gary[NGROUPS];
1954 for (i = 0; i < NGROUPS; ++i) {
1955 while (*p && !isSPACE(*p))
1964 (void)setgroups(i, gary);
1966 #else /* HAS_SETGROUPS */
1967 PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1968 #endif /* HAS_SETGROUPS */
1969 if (PL_delaymagic) {
1970 PL_delaymagic |= DM_EGID;
1971 break; /* don't do magic till later */
1974 (void)setegid((Gid_t)PL_egid);
1977 (void)setregid((Gid_t)-1, (Gid_t)PL_egid);
1979 #ifdef HAS_SETRESGID
1980 (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
1982 if (PL_egid == PL_gid) /* special case $) = $( */
1983 (void)PerlProc_setgid(PL_egid);
1985 PL_egid = PerlProc_getegid();
1986 Perl_croak(aTHX_ "setegid() not implemented");
1991 PL_egid = PerlProc_getegid();
1992 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1995 PL_chopset = SvPV_force(sv,len);
1997 #ifndef MACOS_TRADITIONAL
2002 /* See if all the arguments are contiguous in memory */
2003 for (i = 1; i < PL_origargc; i++) {
2004 if (PL_origargv[i] == s + 1
2006 || PL_origargv[i] == s + 2
2011 s += strlen(s); /* this one is ok too */
2016 /* can grab env area too? */
2017 if (PL_origenviron && (PL_origenviron[0] == s + 1
2019 || (PL_origenviron[0] == s + 9 && (s += 8))
2022 my_setenv("NoNe SuCh", Nullch);
2023 /* force copy of environment */
2024 for (i = 0; PL_origenviron[i]; i++)
2025 if (PL_origenviron[i] == s + 1) {
2032 PL_origalen = s - PL_origargv[0];
2034 s = SvPV_force(sv,len);
2036 if (i >= PL_origalen) {
2038 /* don't allow system to limit $0 seen by script */
2039 /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
2040 Copy(s, PL_origargv[0], i, char);
2041 s = PL_origargv[0]+i;
2045 Copy(s, PL_origargv[0], i, char);
2046 s = PL_origargv[0]+i;
2048 while (++i < PL_origalen)
2050 s = PL_origargv[0]+i;
2051 for (i = 1; i < PL_origargc; i++)
2052 PL_origargv[i] = Nullch;
2058 sv_setsv(thr->errsv, sv);
2060 #endif /* USE_THREADS */
2067 Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg)
2070 DEBUG_S(PerlIO_printf(Perl_debug_log,
2071 "0x%"UVxf": magic_mutexfree 0x%"UVxf"\n",
2072 PTR2UV(thr), PTR2UV(sv));)
2074 Perl_croak(aTHX_ "panic: magic_mutexfree");
2075 MUTEX_DESTROY(MgMUTEXP(mg));
2076 COND_DESTROY(MgCONDP(mg));
2079 #endif /* USE_THREADS */
2082 Perl_whichsig(pTHX_ char *sig)
2084 register char **sigv;
2086 for (sigv = PL_sig_name+1; *sigv; sigv++)
2087 if (strEQ(sig,*sigv))
2088 return PL_sig_num[sigv - PL_sig_name];
2090 if (strEQ(sig,"CHLD"))
2094 if (strEQ(sig,"CLD"))
2103 Perl_sighandler(int sig)
2105 #if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
2106 dTHXoa(PL_curinterp); /* fake TLS, because signals don't do TLS */
2113 SV *sv, *tSv = PL_Sv;
2117 I32 o_save_i = PL_savestack_ix;
2120 #if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
2121 PERL_SET_THX(aTHXo); /* fake TLS, see above */
2124 if (PL_savestack_ix + 15 <= PL_savestack_max)
2126 if (PL_markstack_ptr < PL_markstack_max - 2)
2128 if (PL_retstack_ix < PL_retstack_max - 2)
2130 if (PL_scopestack_ix < PL_scopestack_max - 3)
2133 if (!PL_psig_ptr[sig])
2134 Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n",
2137 /* Max number of items pushed there is 3*n or 4. We cannot fix
2138 infinity, so we fix 4 (in fact 5): */
2140 PL_savestack_ix += 5; /* Protect save in progress. */
2141 o_save_i = PL_savestack_ix;
2142 SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags);
2145 PL_markstack_ptr++; /* Protect mark. */
2148 PL_retstack[PL_retstack_ix] = NULL;
2151 PL_scopestack_ix += 1;
2152 /* sv_2cv is too complicated, try a simpler variant first: */
2153 if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig]))
2154 || SvTYPE(cv) != SVt_PVCV)
2155 cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE);
2157 if (!cv || !CvROOT(cv)) {
2158 if (ckWARN(WARN_SIGNAL))
2159 Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n",
2160 PL_sig_name[sig], (gv ? GvENAME(gv)
2167 if(PL_psig_name[sig]) {
2168 sv = SvREFCNT_inc(PL_psig_name[sig]);
2172 sv = sv_newmortal();
2173 sv_setpv(sv,PL_sig_name[sig]);
2176 PUSHSTACKi(PERLSI_SIGNAL);
2181 call_sv((SV*)cv, G_DISCARD);
2186 PL_savestack_ix -= 8; /* Unprotect save in progress. */
2192 PL_scopestack_ix -= 1;
2195 PL_op = myop; /* Apparently not needed... */
2197 PL_Sv = tSv; /* Restore global temporaries. */
2208 restore_magic(pTHXo_ void *p)
2211 MGS* mgs = SSPTR(PTR2IV(p), MGS*);
2212 SV* sv = mgs->mgs_sv;
2217 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2220 SvFLAGS(sv) |= mgs->mgs_flags;
2224 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2227 mgs->mgs_sv = NULL; /* mark the MGS structure as restored */
2229 /* If we're still on top of the stack, pop us off. (That condition
2230 * will be satisfied if restore_magic was called explicitly, but *not*
2231 * if it's being called via leave_scope.)
2232 * The reason for doing this is that otherwise, things like sv_2cv()
2233 * may leave alloc gunk on the savestack, and some code
2234 * (e.g. sighandler) doesn't expect that...
2236 if (PL_savestack_ix == mgs->mgs_ss_ix)
2238 I32 popval = SSPOPINT;
2239 assert(popval == SAVEt_DESTRUCTOR_X);
2240 PL_savestack_ix -= 2;
2242 assert(popval == SAVEt_ALLOC);
2244 PL_savestack_ix -= popval;
2250 unwind_handler_stack(pTHXo_ void *p)
2253 U32 flags = *(U32*)p;
2256 PL_savestack_ix -= 5; /* Unprotect save in progress. */
2257 /* cxstack_ix-- Not needed, die already unwound it. */
2259 SvREFCNT_dec(sig_sv);