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 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
19 #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)
21 static void do_report_used(pTHXo_ SV *sv);
22 static void do_clean_objs(pTHXo_ SV *sv);
23 #ifndef DISABLE_DESTRUCTOR_KLUDGE
24 static void do_clean_named_objs(pTHXo_ SV *sv);
26 static void do_clean_all(pTHXo_ SV *sv);
29 * "A time to plant, and a time to uproot what was planted..."
34 SvANY(p) = (void *)PL_sv_root; \
35 SvFLAGS(p) = SVTYPEMASK; \
40 /* sv_mutex must be held while calling uproot_SV() */
41 #define uproot_SV(p) \
44 PL_sv_root = (SV*)SvANY(p); \
66 if (PL_debug & 32768) \
76 if (PL_debug & 32768) {
81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
83 svend = &sva[SvREFCNT(sva)];
84 if (p >= sv && p < svend)
88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
90 "Attempt to free non-arena SV: 0x%"UVxf,
98 #else /* ! DEBUGGING */
100 #define del_SV(p) plant_SV(p)
102 #endif /* DEBUGGING */
105 Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
110 Zero(ptr, size, char);
112 /* The first SV in an arena isn't an SV. */
113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
120 svend = &sva[SvREFCNT(sva) - 1];
123 SvANY(sv) = (void *)(SV*)(sv + 1);
124 SvFLAGS(sv) = SVTYPEMASK;
128 SvFLAGS(sv) = SVTYPEMASK;
131 /* sv_mutex must be held while calling more_sv() */
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
151 S_visit(pTHX_ SVFUNC_t f)
157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
158 svend = &sva[SvREFCNT(sva)];
159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
167 Perl_sv_report_used(pTHX)
169 visit(do_report_used);
173 Perl_sv_clean_objs(pTHX)
175 PL_in_clean_objs = TRUE;
176 visit(do_clean_objs);
177 #ifndef DISABLE_DESTRUCTOR_KLUDGE
178 /* some barnacles may yet remain, clinging to typeglobs */
179 visit(do_clean_named_objs);
181 PL_in_clean_objs = FALSE;
185 Perl_sv_clean_all(pTHX)
187 PL_in_clean_all = TRUE;
189 PL_in_clean_all = FALSE;
193 Perl_sv_free_arenas(pTHX)
198 /* Free arenas here, but be careful about fake ones. (We assume
199 contiguity of the fake ones with the corresponding real ones.) */
201 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
202 svanext = (SV*) SvANY(sva);
203 while (svanext && SvFAKE(svanext))
204 svanext = (SV*) SvANY(svanext);
207 Safefree((void *)sva);
211 Safefree(PL_nice_chunk);
212 PL_nice_chunk = Nullch;
213 PL_nice_chunk_size = 0;
219 Perl_report_uninit(pTHX)
222 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
223 " in ", PL_op_desc[PL_op->op_type]);
225 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
237 * See comment in more_xiv() -- RAM.
239 PL_xiv_root = *(IV**)xiv;
241 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
245 S_del_xiv(pTHX_ XPVIV *p)
247 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
249 *(IV**)xiv = PL_xiv_root;
260 New(705, ptr, 1008/sizeof(XPV), XPV);
261 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
262 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
265 xivend = &xiv[1008 / sizeof(IV) - 1];
266 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
268 while (xiv < xivend) {
269 *(IV**)xiv = (IV *)(xiv + 1);
283 PL_xnv_root = *(NV**)xnv;
285 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
289 S_del_xnv(pTHX_ XPVNV *p)
291 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
293 *(NV**)xnv = PL_xnv_root;
303 New(711, xnv, 1008/sizeof(NV), NV);
304 xnvend = &xnv[1008 / sizeof(NV) - 1];
305 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
307 while (xnv < xnvend) {
308 *(NV**)xnv = (NV*)(xnv + 1);
322 PL_xrv_root = (XRV*)xrv->xrv_rv;
328 S_del_xrv(pTHX_ XRV *p)
331 p->xrv_rv = (SV*)PL_xrv_root;
340 register XRV* xrvend;
341 New(712, PL_xrv_root, 1008/sizeof(XRV), XRV);
343 xrvend = &xrv[1008 / sizeof(XRV) - 1];
344 while (xrv < xrvend) {
345 xrv->xrv_rv = (SV*)(xrv + 1);
359 PL_xpv_root = (XPV*)xpv->xpv_pv;
365 S_del_xpv(pTHX_ XPV *p)
368 p->xpv_pv = (char*)PL_xpv_root;
377 register XPV* xpvend;
378 New(713, PL_xpv_root, 1008/sizeof(XPV), XPV);
380 xpvend = &xpv[1008 / sizeof(XPV) - 1];
381 while (xpv < xpvend) {
382 xpv->xpv_pv = (char*)(xpv + 1);
395 xpviv = PL_xpviv_root;
396 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
402 S_del_xpviv(pTHX_ XPVIV *p)
405 p->xpv_pv = (char*)PL_xpviv_root;
414 register XPVIV* xpviv;
415 register XPVIV* xpvivend;
416 New(714, PL_xpviv_root, 1008/sizeof(XPVIV), XPVIV);
417 xpviv = PL_xpviv_root;
418 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
419 while (xpviv < xpvivend) {
420 xpviv->xpv_pv = (char*)(xpviv + 1);
434 xpvnv = PL_xpvnv_root;
435 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
441 S_del_xpvnv(pTHX_ XPVNV *p)
444 p->xpv_pv = (char*)PL_xpvnv_root;
453 register XPVNV* xpvnv;
454 register XPVNV* xpvnvend;
455 New(715, PL_xpvnv_root, 1008/sizeof(XPVNV), XPVNV);
456 xpvnv = PL_xpvnv_root;
457 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
458 while (xpvnv < xpvnvend) {
459 xpvnv->xpv_pv = (char*)(xpvnv + 1);
474 xpvcv = PL_xpvcv_root;
475 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
481 S_del_xpvcv(pTHX_ XPVCV *p)
484 p->xpv_pv = (char*)PL_xpvcv_root;
493 register XPVCV* xpvcv;
494 register XPVCV* xpvcvend;
495 New(716, PL_xpvcv_root, 1008/sizeof(XPVCV), XPVCV);
496 xpvcv = PL_xpvcv_root;
497 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
498 while (xpvcv < xpvcvend) {
499 xpvcv->xpv_pv = (char*)(xpvcv + 1);
514 xpvav = PL_xpvav_root;
515 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
521 S_del_xpvav(pTHX_ XPVAV *p)
524 p->xav_array = (char*)PL_xpvav_root;
533 register XPVAV* xpvav;
534 register XPVAV* xpvavend;
535 New(717, PL_xpvav_root, 1008/sizeof(XPVAV), XPVAV);
536 xpvav = PL_xpvav_root;
537 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
538 while (xpvav < xpvavend) {
539 xpvav->xav_array = (char*)(xpvav + 1);
542 xpvav->xav_array = 0;
554 xpvhv = PL_xpvhv_root;
555 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
561 S_del_xpvhv(pTHX_ XPVHV *p)
564 p->xhv_array = (char*)PL_xpvhv_root;
573 register XPVHV* xpvhv;
574 register XPVHV* xpvhvend;
575 New(718, PL_xpvhv_root, 1008/sizeof(XPVHV), XPVHV);
576 xpvhv = PL_xpvhv_root;
577 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
578 while (xpvhv < xpvhvend) {
579 xpvhv->xhv_array = (char*)(xpvhv + 1);
582 xpvhv->xhv_array = 0;
593 xpvmg = PL_xpvmg_root;
594 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
600 S_del_xpvmg(pTHX_ XPVMG *p)
603 p->xpv_pv = (char*)PL_xpvmg_root;
612 register XPVMG* xpvmg;
613 register XPVMG* xpvmgend;
614 New(719, PL_xpvmg_root, 1008/sizeof(XPVMG), XPVMG);
615 xpvmg = PL_xpvmg_root;
616 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
617 while (xpvmg < xpvmgend) {
618 xpvmg->xpv_pv = (char*)(xpvmg + 1);
633 xpvlv = PL_xpvlv_root;
634 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
640 S_del_xpvlv(pTHX_ XPVLV *p)
643 p->xpv_pv = (char*)PL_xpvlv_root;
652 register XPVLV* xpvlv;
653 register XPVLV* xpvlvend;
654 New(720, PL_xpvlv_root, 1008/sizeof(XPVLV), XPVLV);
655 xpvlv = PL_xpvlv_root;
656 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
657 while (xpvlv < xpvlvend) {
658 xpvlv->xpv_pv = (char*)(xpvlv + 1);
672 xpvbm = PL_xpvbm_root;
673 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
679 S_del_xpvbm(pTHX_ XPVBM *p)
682 p->xpv_pv = (char*)PL_xpvbm_root;
691 register XPVBM* xpvbm;
692 register XPVBM* xpvbmend;
693 New(721, PL_xpvbm_root, 1008/sizeof(XPVBM), XPVBM);
694 xpvbm = PL_xpvbm_root;
695 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
696 while (xpvbm < xpvbmend) {
697 xpvbm->xpv_pv = (char*)(xpvbm + 1);
704 # define my_safemalloc(s) (void*)safexmalloc(717,s)
705 # define my_safefree(p) safexfree((char*)p)
707 # define my_safemalloc(s) (void*)safemalloc(s)
708 # define my_safefree(p) safefree((char*)p)
713 #define new_XIV() my_safemalloc(sizeof(XPVIV))
714 #define del_XIV(p) my_safefree(p)
716 #define new_XNV() my_safemalloc(sizeof(XPVNV))
717 #define del_XNV(p) my_safefree(p)
719 #define new_XRV() my_safemalloc(sizeof(XRV))
720 #define del_XRV(p) my_safefree(p)
722 #define new_XPV() my_safemalloc(sizeof(XPV))
723 #define del_XPV(p) my_safefree(p)
725 #define new_XPVIV() my_safemalloc(sizeof(XPVIV))
726 #define del_XPVIV(p) my_safefree(p)
728 #define new_XPVNV() my_safemalloc(sizeof(XPVNV))
729 #define del_XPVNV(p) my_safefree(p)
731 #define new_XPVCV() my_safemalloc(sizeof(XPVCV))
732 #define del_XPVCV(p) my_safefree(p)
734 #define new_XPVAV() my_safemalloc(sizeof(XPVAV))
735 #define del_XPVAV(p) my_safefree(p)
737 #define new_XPVHV() my_safemalloc(sizeof(XPVHV))
738 #define del_XPVHV(p) my_safefree(p)
740 #define new_XPVMG() my_safemalloc(sizeof(XPVMG))
741 #define del_XPVMG(p) my_safefree(p)
743 #define new_XPVLV() my_safemalloc(sizeof(XPVLV))
744 #define del_XPVLV(p) my_safefree(p)
746 #define new_XPVBM() my_safemalloc(sizeof(XPVBM))
747 #define del_XPVBM(p) my_safefree(p)
751 #define new_XIV() (void*)new_xiv()
752 #define del_XIV(p) del_xiv((XPVIV*) p)
754 #define new_XNV() (void*)new_xnv()
755 #define del_XNV(p) del_xnv((XPVNV*) p)
757 #define new_XRV() (void*)new_xrv()
758 #define del_XRV(p) del_xrv((XRV*) p)
760 #define new_XPV() (void*)new_xpv()
761 #define del_XPV(p) del_xpv((XPV *)p)
763 #define new_XPVIV() (void*)new_xpviv()
764 #define del_XPVIV(p) del_xpviv((XPVIV *)p)
766 #define new_XPVNV() (void*)new_xpvnv()
767 #define del_XPVNV(p) del_xpvnv((XPVNV *)p)
769 #define new_XPVCV() (void*)new_xpvcv()
770 #define del_XPVCV(p) del_xpvcv((XPVCV *)p)
772 #define new_XPVAV() (void*)new_xpvav()
773 #define del_XPVAV(p) del_xpvav((XPVAV *)p)
775 #define new_XPVHV() (void*)new_xpvhv()
776 #define del_XPVHV(p) del_xpvhv((XPVHV *)p)
778 #define new_XPVMG() (void*)new_xpvmg()
779 #define del_XPVMG(p) del_xpvmg((XPVMG *)p)
781 #define new_XPVLV() (void*)new_xpvlv()
782 #define del_XPVLV(p) del_xpvlv((XPVLV *)p)
784 #define new_XPVBM() (void*)new_xpvbm()
785 #define del_XPVBM(p) del_xpvbm((XPVBM *)p)
789 #define new_XPVGV() my_safemalloc(sizeof(XPVGV))
790 #define del_XPVGV(p) my_safefree(p)
792 #define new_XPVFM() my_safemalloc(sizeof(XPVFM))
793 #define del_XPVFM(p) my_safefree(p)
795 #define new_XPVIO() my_safemalloc(sizeof(XPVIO))
796 #define del_XPVIO(p) my_safefree(p)
799 =for apidoc sv_upgrade
801 Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
808 Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
818 if (SvTYPE(sv) == mt)
824 switch (SvTYPE(sv)) {
845 else if (mt < SVt_PVIV)
862 pv = (char*)SvRV(sv);
882 else if (mt == SVt_NV)
893 del_XPVIV(SvANY(sv));
903 del_XPVNV(SvANY(sv));
913 del_XPVMG(SvANY(sv));
916 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
921 Perl_croak(aTHX_ "Can't upgrade to undef");
923 SvANY(sv) = new_XIV();
927 SvANY(sv) = new_XNV();
931 SvANY(sv) = new_XRV();
935 SvANY(sv) = new_XPV();
941 SvANY(sv) = new_XPVIV();
951 SvANY(sv) = new_XPVNV();
959 SvANY(sv) = new_XPVMG();
969 SvANY(sv) = new_XPVLV();
983 SvANY(sv) = new_XPVAV();
998 SvANY(sv) = new_XPVHV();
1006 SvMAGIC(sv) = magic;
1007 SvSTASH(sv) = stash;
1014 SvANY(sv) = new_XPVCV();
1015 Zero(SvANY(sv), 1, XPVCV);
1021 SvMAGIC(sv) = magic;
1022 SvSTASH(sv) = stash;
1025 SvANY(sv) = new_XPVGV();
1031 SvMAGIC(sv) = magic;
1032 SvSTASH(sv) = stash;
1040 SvANY(sv) = new_XPVBM();
1046 SvMAGIC(sv) = magic;
1047 SvSTASH(sv) = stash;
1053 SvANY(sv) = new_XPVFM();
1054 Zero(SvANY(sv), 1, XPVFM);
1060 SvMAGIC(sv) = magic;
1061 SvSTASH(sv) = stash;
1064 SvANY(sv) = new_XPVIO();
1065 Zero(SvANY(sv), 1, XPVIO);
1071 SvMAGIC(sv) = magic;
1072 SvSTASH(sv) = stash;
1073 IoPAGE_LEN(sv) = 60;
1076 SvFLAGS(sv) &= ~SVTYPEMASK;
1082 Perl_sv_backoff(pTHX_ register SV *sv)
1086 char *s = SvPVX(sv);
1087 SvLEN(sv) += SvIVX(sv);
1088 SvPVX(sv) -= SvIVX(sv);
1090 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1092 SvFLAGS(sv) &= ~SVf_OOK;
1099 Expands the character buffer in the SV. This will use C<sv_unref> and will
1100 upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1107 Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
1111 #ifdef HAS_64K_LIMIT
1112 if (newlen >= 0x10000) {
1113 PerlIO_printf(Perl_debug_log,
1114 "Allocation too large: %"UVxf"\n", (UV)newlen);
1117 #endif /* HAS_64K_LIMIT */
1120 if (SvTYPE(sv) < SVt_PV) {
1121 sv_upgrade(sv, SVt_PV);
1124 else if (SvOOK(sv)) { /* pv is offset? */
1127 if (newlen > SvLEN(sv))
1128 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1129 #ifdef HAS_64K_LIMIT
1130 if (newlen >= 0x10000)
1136 if (newlen > SvLEN(sv)) { /* need more room? */
1137 if (SvLEN(sv) && s) {
1138 #if defined(MYMALLOC) && !defined(LEAKTEST)
1139 STRLEN l = malloced_size((void*)SvPVX(sv));
1145 Renew(s,newlen,char);
1148 New(703,s,newlen,char);
1150 SvLEN_set(sv, newlen);
1156 =for apidoc sv_setiv
1158 Copies an integer into the given SV. Does not handle 'set' magic. See
1165 Perl_sv_setiv(pTHX_ register SV *sv, IV i)
1167 SV_CHECK_THINKFIRST(sv);
1168 switch (SvTYPE(sv)) {
1170 sv_upgrade(sv, SVt_IV);
1173 sv_upgrade(sv, SVt_PVNV);
1177 sv_upgrade(sv, SVt_PVIV);
1188 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1189 PL_op_desc[PL_op->op_type]);
1192 (void)SvIOK_only(sv); /* validate number */
1198 =for apidoc sv_setiv_mg
1200 Like C<sv_setiv>, but also handles 'set' magic.
1206 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1213 =for apidoc sv_setuv
1215 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1222 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
1230 =for apidoc sv_setuv_mg
1232 Like C<sv_setuv>, but also handles 'set' magic.
1238 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1245 =for apidoc sv_setnv
1247 Copies a double into the given SV. Does not handle 'set' magic. See
1254 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1256 SV_CHECK_THINKFIRST(sv);
1257 switch (SvTYPE(sv)) {
1260 sv_upgrade(sv, SVt_NV);
1265 sv_upgrade(sv, SVt_PVNV);
1276 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1277 PL_op_name[PL_op->op_type]);
1281 (void)SvNOK_only(sv); /* validate number */
1286 =for apidoc sv_setnv_mg
1288 Like C<sv_setnv>, but also handles 'set' magic.
1294 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1301 S_not_a_number(pTHX_ SV *sv)
1307 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1308 /* each *s can expand to 4 chars + "...\0",
1309 i.e. need room for 8 chars */
1311 for (s = SvPVX(sv); *s && d < limit; s++) {
1313 if (ch & 128 && !isPRINT_LC(ch)) {
1322 else if (ch == '\r') {
1326 else if (ch == '\f') {
1330 else if (ch == '\\') {
1334 else if (isPRINT_LC(ch))
1349 Perl_warner(aTHX_ WARN_NUMERIC,
1350 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1351 PL_op_desc[PL_op->op_type]);
1353 Perl_warner(aTHX_ WARN_NUMERIC,
1354 "Argument \"%s\" isn't numeric", tmpbuf);
1357 /* the number can be converted to integer with atol() or atoll() */
1358 #define IS_NUMBER_TO_INT_BY_ATOL 0x01
1359 #define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1360 #define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1361 #define IS_NUMBER_NEG 0x08 /* not good to cache UV */
1363 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1364 until proven guilty, assume that things are not that bad... */
1367 Perl_sv_2iv(pTHX_ register SV *sv)
1371 if (SvGMAGICAL(sv)) {
1376 return I_V(SvNVX(sv));
1378 if (SvPOKp(sv) && SvLEN(sv))
1381 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1383 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1389 if (SvTHINKFIRST(sv)) {
1392 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1393 return SvIV(tmpstr);
1394 return PTR2IV(SvRV(sv));
1396 if (SvREADONLY(sv) && !SvOK(sv)) {
1398 if (ckWARN(WARN_UNINITIALIZED))
1405 return (IV)(SvUVX(sv));
1412 /* We can cache the IV/UV value even if it not good enough
1413 * to reconstruct NV, since the conversion to PV will prefer
1417 if (SvTYPE(sv) == SVt_NV)
1418 sv_upgrade(sv, SVt_PVNV);
1421 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1422 SvIVX(sv) = I_V(SvNVX(sv));
1424 SvUVX(sv) = U_V(SvNVX(sv));
1427 DEBUG_c(PerlIO_printf(Perl_debug_log,
1428 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1432 return (IV)SvUVX(sv);
1435 else if (SvPOKp(sv) && SvLEN(sv)) {
1436 I32 numtype = looks_like_number(sv);
1438 /* We want to avoid a possible problem when we cache an IV which
1439 may be later translated to an NV, and the resulting NV is not
1440 the translation of the initial data.
1442 This means that if we cache such an IV, we need to cache the
1443 NV as well. Moreover, we trade speed for space, and do not
1444 cache the NV if not needed.
1446 if (numtype & IS_NUMBER_NOT_IV) {
1447 /* May be not an integer. Need to cache NV if we cache IV
1448 * - otherwise future conversion to NV will be wrong. */
1451 d = Atof(SvPVX(sv));
1453 if (SvTYPE(sv) < SVt_PVNV)
1454 sv_upgrade(sv, SVt_PVNV);
1458 #if defined(USE_LONG_DOUBLE)
1459 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1460 PTR2UV(sv), SvNVX(sv)));
1462 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1463 PTR2UV(sv), SvNVX(sv)));
1465 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1466 SvIVX(sv) = I_V(SvNVX(sv));
1468 SvUVX(sv) = U_V(SvNVX(sv));
1474 /* The NV may be reconstructed from IV - safe to cache IV,
1475 which may be calculated by atol(). */
1476 if (SvTYPE(sv) == SVt_PV)
1477 sv_upgrade(sv, SVt_PVIV);
1479 SvIVX(sv) = Atol(SvPVX(sv));
1481 else { /* Not a number. Cache 0. */
1484 if (SvTYPE(sv) < SVt_PVIV)
1485 sv_upgrade(sv, SVt_PVIV);
1488 if (ckWARN(WARN_NUMERIC))
1494 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1496 if (SvTYPE(sv) < SVt_IV)
1497 /* Typically the caller expects that sv_any is not NULL now. */
1498 sv_upgrade(sv, SVt_IV);
1501 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1502 PTR2UV(sv),SvIVX(sv)));
1503 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1507 Perl_sv_2uv(pTHX_ register SV *sv)
1511 if (SvGMAGICAL(sv)) {
1516 return U_V(SvNVX(sv));
1517 if (SvPOKp(sv) && SvLEN(sv))
1520 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1522 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1528 if (SvTHINKFIRST(sv)) {
1531 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1532 return SvUV(tmpstr);
1533 return PTR2UV(SvRV(sv));
1535 if (SvREADONLY(sv) && !SvOK(sv)) {
1537 if (ckWARN(WARN_UNINITIALIZED))
1547 return (UV)SvIVX(sv);
1551 /* We can cache the IV/UV value even if it not good enough
1552 * to reconstruct NV, since the conversion to PV will prefer
1555 if (SvTYPE(sv) == SVt_NV)
1556 sv_upgrade(sv, SVt_PVNV);
1558 if (SvNVX(sv) >= -0.5) {
1560 SvUVX(sv) = U_V(SvNVX(sv));
1563 SvIVX(sv) = I_V(SvNVX(sv));
1565 DEBUG_c(PerlIO_printf(Perl_debug_log,
1566 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1569 (IV)(UV)SvIVX(sv)));
1570 return (UV)SvIVX(sv);
1573 else if (SvPOKp(sv) && SvLEN(sv)) {
1574 I32 numtype = looks_like_number(sv);
1576 /* We want to avoid a possible problem when we cache a UV which
1577 may be later translated to an NV, and the resulting NV is not
1578 the translation of the initial data.
1580 This means that if we cache such a UV, we need to cache the
1581 NV as well. Moreover, we trade speed for space, and do not
1582 cache the NV if not needed.
1584 if (numtype & IS_NUMBER_NOT_IV) {
1585 /* May be not an integer. Need to cache NV if we cache IV
1586 * - otherwise future conversion to NV will be wrong. */
1589 d = Atof(SvPVX(sv));
1591 if (SvTYPE(sv) < SVt_PVNV)
1592 sv_upgrade(sv, SVt_PVNV);
1596 #if defined(USE_LONG_DOUBLE)
1597 DEBUG_c(PerlIO_printf(Perl_debug_log,
1598 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1599 PTR2UV(sv), SvNVX(sv)));
1601 DEBUG_c(PerlIO_printf(Perl_debug_log,
1602 "0x%"UVxf" 2nv(%g)\n",
1603 PTR2UV(sv), SvNVX(sv)));
1605 if (SvNVX(sv) < -0.5) {
1606 SvIVX(sv) = I_V(SvNVX(sv));
1609 SvUVX(sv) = U_V(SvNVX(sv));
1613 else if (numtype & IS_NUMBER_NEG) {
1614 /* The NV may be reconstructed from IV - safe to cache IV,
1615 which may be calculated by atol(). */
1616 if (SvTYPE(sv) == SVt_PV)
1617 sv_upgrade(sv, SVt_PVIV);
1619 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1621 else if (numtype) { /* Non-negative */
1622 /* The NV may be reconstructed from UV - safe to cache UV,
1623 which may be calculated by strtoul()/atol. */
1624 if (SvTYPE(sv) == SVt_PV)
1625 sv_upgrade(sv, SVt_PVIV);
1627 (void)SvIsUV_on(sv);
1629 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1630 #else /* no atou(), but we know the number fits into IV... */
1631 /* The only problem may be if it is negative... */
1632 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1635 else { /* Not a number. Cache 0. */
1638 if (SvTYPE(sv) < SVt_PVIV)
1639 sv_upgrade(sv, SVt_PVIV);
1640 SvUVX(sv) = 0; /* We assume that 0s have the
1641 same bitmap in IV and UV. */
1643 (void)SvIsUV_on(sv);
1644 if (ckWARN(WARN_NUMERIC))
1649 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1651 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1654 if (SvTYPE(sv) < SVt_IV)
1655 /* Typically the caller expects that sv_any is not NULL now. */
1656 sv_upgrade(sv, SVt_IV);
1660 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1661 PTR2UV(sv),SvUVX(sv)));
1662 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1666 Perl_sv_2nv(pTHX_ register SV *sv)
1670 if (SvGMAGICAL(sv)) {
1674 if (SvPOKp(sv) && SvLEN(sv)) {
1676 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1678 return Atof(SvPVX(sv));
1682 return (NV)SvUVX(sv);
1684 return (NV)SvIVX(sv);
1687 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1689 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1695 if (SvTHINKFIRST(sv)) {
1698 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1699 return SvNV(tmpstr);
1700 return PTR2NV(SvRV(sv));
1702 if (SvREADONLY(sv) && !SvOK(sv)) {
1704 if (ckWARN(WARN_UNINITIALIZED))
1709 if (SvTYPE(sv) < SVt_NV) {
1710 if (SvTYPE(sv) == SVt_IV)
1711 sv_upgrade(sv, SVt_PVNV);
1713 sv_upgrade(sv, SVt_NV);
1714 #if defined(USE_LONG_DOUBLE)
1716 RESTORE_NUMERIC_STANDARD();
1717 PerlIO_printf(Perl_debug_log,
1718 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1719 PTR2UV(sv), SvNVX(sv));
1720 RESTORE_NUMERIC_LOCAL();
1724 RESTORE_NUMERIC_STANDARD();
1725 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1726 PTR2UV(sv), SvNVX(sv));
1727 RESTORE_NUMERIC_LOCAL();
1731 else if (SvTYPE(sv) < SVt_PVNV)
1732 sv_upgrade(sv, SVt_PVNV);
1734 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1736 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1738 else if (SvPOKp(sv) && SvLEN(sv)) {
1740 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1742 SvNVX(sv) = Atof(SvPVX(sv));
1746 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1748 if (SvTYPE(sv) < SVt_NV)
1749 /* Typically the caller expects that sv_any is not NULL now. */
1750 sv_upgrade(sv, SVt_NV);
1754 #if defined(USE_LONG_DOUBLE)
1756 RESTORE_NUMERIC_STANDARD();
1757 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1758 PTR2UV(sv), SvNVX(sv));
1759 RESTORE_NUMERIC_LOCAL();
1763 RESTORE_NUMERIC_STANDARD();
1764 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1765 PTR2UV(sv), SvNVX(sv));
1766 RESTORE_NUMERIC_LOCAL();
1773 S_asIV(pTHX_ SV *sv)
1775 I32 numtype = looks_like_number(sv);
1778 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1779 return Atol(SvPVX(sv));
1782 if (ckWARN(WARN_NUMERIC))
1785 d = Atof(SvPVX(sv));
1790 S_asUV(pTHX_ SV *sv)
1792 I32 numtype = looks_like_number(sv);
1795 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1796 return Strtoul(SvPVX(sv), Null(char**), 10);
1800 if (ckWARN(WARN_NUMERIC))
1803 return U_V(Atof(SvPVX(sv)));
1807 * Returns a combination of (advisory only - can get false negatives)
1808 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1810 * 0 if does not look like number.
1812 * In fact possible values are 0 and
1813 * IS_NUMBER_TO_INT_BY_ATOL 123
1814 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1815 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1816 * with a possible addition of IS_NUMBER_NEG.
1820 =for apidoc looks_like_number
1822 Test if an the content of an SV looks like a number (or is a
1829 Perl_looks_like_number(pTHX_ SV *sv)
1832 register char *send;
1833 register char *sbegin;
1834 register char *nbegin;
1842 else if (SvPOKp(sv))
1843 sbegin = SvPV(sv, len);
1846 send = sbegin + len;
1853 numtype = IS_NUMBER_NEG;
1860 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1861 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1865 /* next must be digit or the radix separator */
1869 } while (isDIGIT(*s));
1871 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1872 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1874 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1877 #ifdef USE_LOCALE_NUMERIC
1878 || IS_NUMERIC_RADIX(*s)
1882 numtype |= IS_NUMBER_NOT_IV;
1883 while (isDIGIT(*s)) /* optional digits after the radix */
1888 #ifdef USE_LOCALE_NUMERIC
1889 || IS_NUMERIC_RADIX(*s)
1893 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1894 /* no digits before the radix means we need digits after it */
1898 } while (isDIGIT(*s));
1906 /* we can have an optional exponent part */
1907 if (*s == 'e' || *s == 'E') {
1908 numtype &= ~IS_NUMBER_NEG;
1909 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1911 if (*s == '+' || *s == '-')
1916 } while (isDIGIT(*s));
1925 if (len == 10 && memEQ(sbegin, "0 but true", 10))
1926 return IS_NUMBER_TO_INT_BY_ATOL;
1931 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
1934 return sv_2pv(sv, &n_a);
1937 /* We assume that buf is at least TYPE_CHARS(UV) long. */
1939 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
1942 char *ptr = buf + TYPE_CHARS(UV);
1957 *--ptr = '0' + (uv % 10);
1966 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
1971 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
1972 char *tmpbuf = tbuf;
1978 if (SvGMAGICAL(sv)) {
1986 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
1988 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
1993 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
1998 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2000 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2007 if (SvTHINKFIRST(sv)) {
2010 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
2011 return SvPV(tmpstr,*lp);
2018 switch (SvTYPE(sv)) {
2020 if ( ((SvFLAGS(sv) &
2021 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2022 == (SVs_OBJECT|SVs_RMG))
2023 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2024 && (mg = mg_find(sv, 'r'))) {
2026 regexp *re = (regexp *)mg->mg_obj;
2029 char *fptr = "msix";
2034 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2036 while(ch = *fptr++) {
2038 reflags[left++] = ch;
2041 reflags[right--] = ch;
2046 reflags[left] = '-';
2050 mg->mg_len = re->prelen + 4 + left;
2051 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2052 Copy("(?", mg->mg_ptr, 2, char);
2053 Copy(reflags, mg->mg_ptr+2, left, char);
2054 Copy(":", mg->mg_ptr+left+2, 1, char);
2055 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2056 mg->mg_ptr[mg->mg_len - 1] = ')';
2057 mg->mg_ptr[mg->mg_len] = 0;
2059 PL_reginterp_cnt += re->program[0].next_off;
2071 case SVt_PVBM: s = "SCALAR"; break;
2072 case SVt_PVLV: s = "LVALUE"; break;
2073 case SVt_PVAV: s = "ARRAY"; break;
2074 case SVt_PVHV: s = "HASH"; break;
2075 case SVt_PVCV: s = "CODE"; break;
2076 case SVt_PVGV: s = "GLOB"; break;
2077 case SVt_PVFM: s = "FORMAT"; break;
2078 case SVt_PVIO: s = "IO"; break;
2079 default: s = "UNKNOWN"; break;
2083 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2086 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2092 if (SvREADONLY(sv) && !SvOK(sv)) {
2094 if (ckWARN(WARN_UNINITIALIZED))
2101 I32 isIOK = SvIOK(sv);
2102 I32 isUIOK = SvIsUV(sv);
2103 char buf[TYPE_CHARS(UV)];
2106 if (SvTYPE(sv) < SVt_PVIV)
2107 sv_upgrade(sv, SVt_PVIV);
2109 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2111 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2112 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2113 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2114 SvCUR_set(sv, ebuf - ptr);
2125 else if (SvNOKp(sv)) { /* See note in sv_2uv() */
2126 if (SvTYPE(sv) < SVt_PVNV)
2127 sv_upgrade(sv, SVt_PVNV);
2130 olderrno = errno; /* some Xenix systems wipe out errno here */
2132 if (SvNVX(sv) == 0.0)
2133 (void)strcpy(s,"0");
2137 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2140 #ifdef FIXNEGATIVEZERO
2141 if (*s == '-' && s[1] == '0' && !s[2])
2152 if (ckWARN(WARN_UNINITIALIZED)
2153 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2158 if (SvTYPE(sv) < SVt_PV)
2159 /* Typically the caller expects that sv_any is not NULL now. */
2160 sv_upgrade(sv, SVt_PV);
2163 *lp = s - SvPVX(sv);
2166 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2167 PTR2UV(sv),SvPVX(sv)));
2171 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2172 /* Sneaky stuff here */
2176 tsv = newSVpv(tmpbuf, 0);
2192 len = strlen(tmpbuf);
2194 #ifdef FIXNEGATIVEZERO
2195 if (len == 2 && t[0] == '-' && t[1] == '0') {
2200 (void)SvUPGRADE(sv, SVt_PV);
2202 s = SvGROW(sv, len + 1);
2211 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2214 return sv_2pvbyte(sv, &n_a);
2218 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2220 return sv_2pv(sv,lp);
2224 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2227 return sv_2pvutf8(sv, &n_a);
2231 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2233 sv_utf8_upgrade(sv);
2234 return sv_2pv(sv,lp);
2237 /* This function is only called on magical items */
2239 Perl_sv_2bool(pTHX_ register SV *sv)
2249 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
2250 return SvTRUE(tmpsv);
2251 return SvRV(sv) != 0;
2254 register XPV* Xpvtmp;
2255 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2256 (*Xpvtmp->xpv_pv > '0' ||
2257 Xpvtmp->xpv_cur > 1 ||
2258 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2265 return SvIVX(sv) != 0;
2268 return SvNVX(sv) != 0.0;
2276 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2281 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2284 /* This function could be much more efficient if we had a FLAG
2285 * to signal if there are any hibit chars in the string
2288 for (c = SvPVX(sv); c < SvEND(sv); c++) {
2295 SvGROW(sv, SvCUR(sv) + hicount + 1);
2297 src = SvEND(sv) - 1;
2298 SvCUR_set(sv, SvCUR(sv) + hicount);
2299 dst = SvEND(sv) - 1;
2304 uv_to_utf8((U8*)dst, (U8)*src--);
2317 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2319 if (SvPOK(sv) && SvUTF8(sv)) {
2320 char *c = SvPVX(sv);
2322 /* need to figure out if this is possible at all first */
2323 while (c < SvEND(sv)) {
2326 UV uv = utf8_to_uv((U8*)c, &len);
2331 /* XXX might want to make a callback here instead */
2332 Perl_croak(aTHX_ "Big byte");
2345 char *src = first_hi;
2346 char *dst = first_hi;
2347 while (src < SvEND(sv)) {
2350 U8 u = (U8)utf8_to_uv((U8*)src, &len);
2358 SvCUR_set(sv, dst - SvPVX(sv));
2366 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2368 sv_utf8_upgrade(sv);
2373 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2377 bool has_utf = FALSE;
2378 if (!sv_utf8_downgrade(sv, TRUE))
2381 /* it is actually just a matter of turning the utf8 flag on, but
2382 * we want to make sure everything inside is valid utf8 first.
2385 while (c < SvEND(sv)) {
2388 (void)utf8_to_uv((U8*)c, &len);
2408 /* Note: sv_setsv() should not be called with a source string that needs
2409 * to be reused, since it may destroy the source string if it is marked
2414 =for apidoc sv_setsv
2416 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2417 The source SV may be destroyed if it is mortal. Does not handle 'set'
2418 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2425 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2428 register U32 sflags;
2434 SV_CHECK_THINKFIRST(dstr);
2436 sstr = &PL_sv_undef;
2437 stype = SvTYPE(sstr);
2438 dtype = SvTYPE(dstr);
2442 /* There's a lot of redundancy below but we're going for speed here */
2447 if (dtype != SVt_PVGV) {
2448 (void)SvOK_off(dstr);
2456 sv_upgrade(dstr, SVt_IV);
2459 sv_upgrade(dstr, SVt_PVNV);
2463 sv_upgrade(dstr, SVt_PVIV);
2466 (void)SvIOK_only(dstr);
2467 SvIVX(dstr) = SvIVX(sstr);
2480 sv_upgrade(dstr, SVt_NV);
2485 sv_upgrade(dstr, SVt_PVNV);
2488 SvNVX(dstr) = SvNVX(sstr);
2489 (void)SvNOK_only(dstr);
2497 sv_upgrade(dstr, SVt_RV);
2498 else if (dtype == SVt_PVGV &&
2499 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2502 if (GvIMPORTED(dstr) != GVf_IMPORTED
2503 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2505 GvIMPORTED_on(dstr);
2516 sv_upgrade(dstr, SVt_PV);
2519 if (dtype < SVt_PVIV)
2520 sv_upgrade(dstr, SVt_PVIV);
2523 if (dtype < SVt_PVNV)
2524 sv_upgrade(dstr, SVt_PVNV);
2531 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2532 PL_op_name[PL_op->op_type]);
2534 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2538 if (dtype <= SVt_PVGV) {
2540 if (dtype != SVt_PVGV) {
2541 char *name = GvNAME(sstr);
2542 STRLEN len = GvNAMELEN(sstr);
2543 sv_upgrade(dstr, SVt_PVGV);
2544 sv_magic(dstr, dstr, '*', name, len);
2545 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2546 GvNAME(dstr) = savepvn(name, len);
2547 GvNAMELEN(dstr) = len;
2548 SvFAKE_on(dstr); /* can coerce to non-glob */
2550 /* ahem, death to those who redefine active sort subs */
2551 else if (PL_curstackinfo->si_type == PERLSI_SORT
2552 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2553 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2555 (void)SvOK_off(dstr);
2556 GvINTRO_off(dstr); /* one-shot flag */
2558 GvGP(dstr) = gp_ref(GvGP(sstr));
2560 if (GvIMPORTED(dstr) != GVf_IMPORTED
2561 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2563 GvIMPORTED_on(dstr);
2571 if (SvGMAGICAL(sstr)) {
2573 if (SvTYPE(sstr) != stype) {
2574 stype = SvTYPE(sstr);
2575 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2579 if (stype == SVt_PVLV)
2580 (void)SvUPGRADE(dstr, SVt_PVNV);
2582 (void)SvUPGRADE(dstr, stype);
2585 sflags = SvFLAGS(sstr);
2587 if (sflags & SVf_ROK) {
2588 if (dtype >= SVt_PV) {
2589 if (dtype == SVt_PVGV) {
2590 SV *sref = SvREFCNT_inc(SvRV(sstr));
2592 int intro = GvINTRO(dstr);
2597 GvINTRO_off(dstr); /* one-shot flag */
2598 Newz(602,gp, 1, GP);
2599 GvGP(dstr) = gp_ref(gp);
2600 GvSV(dstr) = NEWSV(72,0);
2601 GvLINE(dstr) = CopLINE(PL_curcop);
2602 GvEGV(dstr) = (GV*)dstr;
2605 switch (SvTYPE(sref)) {
2608 SAVESPTR(GvAV(dstr));
2610 dref = (SV*)GvAV(dstr);
2611 GvAV(dstr) = (AV*)sref;
2612 if (GvIMPORTED_AV_off(dstr)
2613 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2615 GvIMPORTED_AV_on(dstr);
2620 SAVESPTR(GvHV(dstr));
2622 dref = (SV*)GvHV(dstr);
2623 GvHV(dstr) = (HV*)sref;
2624 if (GvIMPORTED_HV_off(dstr)
2625 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2627 GvIMPORTED_HV_on(dstr);
2632 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2633 SvREFCNT_dec(GvCV(dstr));
2634 GvCV(dstr) = Nullcv;
2635 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2636 PL_sub_generation++;
2638 SAVESPTR(GvCV(dstr));
2641 dref = (SV*)GvCV(dstr);
2642 if (GvCV(dstr) != (CV*)sref) {
2643 CV* cv = GvCV(dstr);
2645 if (!GvCVGEN((GV*)dstr) &&
2646 (CvROOT(cv) || CvXSUB(cv)))
2648 SV *const_sv = cv_const_sv(cv);
2649 bool const_changed = TRUE;
2651 const_changed = sv_cmp(const_sv,
2652 op_const_sv(CvSTART((CV*)sref),
2654 /* ahem, death to those who redefine
2655 * active sort subs */
2656 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2657 PL_sortcop == CvSTART(cv))
2659 "Can't redefine active sort subroutine %s",
2660 GvENAME((GV*)dstr));
2661 if ((const_changed || const_sv) && ckWARN(WARN_REDEFINE))
2662 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
2663 "Constant subroutine %s redefined"
2664 : "Subroutine %s redefined",
2665 GvENAME((GV*)dstr));
2667 cv_ckproto(cv, (GV*)dstr,
2668 SvPOK(sref) ? SvPVX(sref) : Nullch);
2670 GvCV(dstr) = (CV*)sref;
2671 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2672 GvASSUMECV_on(dstr);
2673 PL_sub_generation++;
2675 if (GvIMPORTED_CV_off(dstr)
2676 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2678 GvIMPORTED_CV_on(dstr);
2683 SAVESPTR(GvIOp(dstr));
2685 dref = (SV*)GvIOp(dstr);
2686 GvIOp(dstr) = (IO*)sref;
2690 SAVESPTR(GvSV(dstr));
2692 dref = (SV*)GvSV(dstr);
2694 if (GvIMPORTED_SV_off(dstr)
2695 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2697 GvIMPORTED_SV_on(dstr);
2709 (void)SvOOK_off(dstr); /* backoff */
2711 Safefree(SvPVX(dstr));
2712 SvLEN(dstr)=SvCUR(dstr)=0;
2715 (void)SvOK_off(dstr);
2716 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2718 if (sflags & SVp_NOK) {
2720 SvNVX(dstr) = SvNVX(sstr);
2722 if (sflags & SVp_IOK) {
2723 (void)SvIOK_on(dstr);
2724 SvIVX(dstr) = SvIVX(sstr);
2728 if (SvAMAGIC(sstr)) {
2732 else if (sflags & SVp_POK) {
2735 * Check to see if we can just swipe the string. If so, it's a
2736 * possible small lose on short strings, but a big win on long ones.
2737 * It might even be a win on short strings if SvPVX(dstr)
2738 * has to be allocated and SvPVX(sstr) has to be freed.
2741 if (SvTEMP(sstr) && /* slated for free anyway? */
2742 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2743 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2745 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2747 SvFLAGS(dstr) &= ~SVf_OOK;
2748 Safefree(SvPVX(dstr) - SvIVX(dstr));
2750 else if (SvLEN(dstr))
2751 Safefree(SvPVX(dstr));
2753 (void)SvPOK_only(dstr);
2754 SvPV_set(dstr, SvPVX(sstr));
2755 SvLEN_set(dstr, SvLEN(sstr));
2756 SvCUR_set(dstr, SvCUR(sstr));
2763 (void)SvOK_off(sstr);
2764 SvPV_set(sstr, Nullch);
2769 else { /* have to copy actual string */
2770 STRLEN len = SvCUR(sstr);
2772 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2773 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2774 SvCUR_set(dstr, len);
2775 *SvEND(dstr) = '\0';
2776 (void)SvPOK_only(dstr);
2781 if (sflags & SVp_NOK) {
2783 SvNVX(dstr) = SvNVX(sstr);
2785 if (sflags & SVp_IOK) {
2786 (void)SvIOK_on(dstr);
2787 SvIVX(dstr) = SvIVX(sstr);
2792 else if (sflags & SVp_NOK) {
2793 SvNVX(dstr) = SvNVX(sstr);
2794 (void)SvNOK_only(dstr);
2796 (void)SvIOK_on(dstr);
2797 SvIVX(dstr) = SvIVX(sstr);
2798 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2803 else if (sflags & SVp_IOK) {
2804 (void)SvIOK_only(dstr);
2805 SvIVX(dstr) = SvIVX(sstr);
2810 if (dtype == SVt_PVGV) {
2811 if (ckWARN(WARN_MISC))
2812 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2815 (void)SvOK_off(dstr);
2821 =for apidoc sv_setsv_mg
2823 Like C<sv_setsv>, but also handles 'set' magic.
2829 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2831 sv_setsv(dstr,sstr);
2836 =for apidoc sv_setpvn
2838 Copies a string into an SV. The C<len> parameter indicates the number of
2839 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2845 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2847 register char *dptr;
2848 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2849 elicit a warning, but it won't hurt. */
2850 SV_CHECK_THINKFIRST(sv);
2855 (void)SvUPGRADE(sv, SVt_PV);
2857 SvGROW(sv, len + 1);
2859 Move(ptr,dptr,len,char);
2862 (void)SvPOK_only(sv); /* validate pointer */
2867 =for apidoc sv_setpvn_mg
2869 Like C<sv_setpvn>, but also handles 'set' magic.
2875 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2877 sv_setpvn(sv,ptr,len);
2882 =for apidoc sv_setpv
2884 Copies a string into an SV. The string must be null-terminated. Does not
2885 handle 'set' magic. See C<sv_setpv_mg>.
2891 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
2893 register STRLEN len;
2895 SV_CHECK_THINKFIRST(sv);
2901 (void)SvUPGRADE(sv, SVt_PV);
2903 SvGROW(sv, len + 1);
2904 Move(ptr,SvPVX(sv),len+1,char);
2906 (void)SvPOK_only(sv); /* validate pointer */
2911 =for apidoc sv_setpv_mg
2913 Like C<sv_setpv>, but also handles 'set' magic.
2919 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
2926 =for apidoc sv_usepvn
2928 Tells an SV to use C<ptr> to find its string value. Normally the string is
2929 stored inside the SV but sv_usepvn allows the SV to use an outside string.
2930 The C<ptr> should point to memory that was allocated by C<malloc>. The
2931 string length, C<len>, must be supplied. This function will realloc the
2932 memory pointed to by C<ptr>, so that pointer should not be freed or used by
2933 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
2934 See C<sv_usepvn_mg>.
2940 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
2942 SV_CHECK_THINKFIRST(sv);
2943 (void)SvUPGRADE(sv, SVt_PV);
2948 (void)SvOOK_off(sv);
2949 if (SvPVX(sv) && SvLEN(sv))
2950 Safefree(SvPVX(sv));
2951 Renew(ptr, len+1, char);
2954 SvLEN_set(sv, len+1);
2956 (void)SvPOK_only(sv); /* validate pointer */
2961 =for apidoc sv_usepvn_mg
2963 Like C<sv_usepvn>, but also handles 'set' magic.
2969 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
2971 sv_usepvn(sv,ptr,len);
2976 Perl_sv_force_normal(pTHX_ register SV *sv)
2978 if (SvREADONLY(sv)) {
2980 if (PL_curcop != &PL_compiling)
2981 Perl_croak(aTHX_ PL_no_modify);
2985 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2992 Efficient removal of characters from the beginning of the string buffer.
2993 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
2994 the string buffer. The C<ptr> becomes the first character of the adjusted
3001 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3005 register STRLEN delta;
3007 if (!ptr || !SvPOKp(sv))
3009 SV_CHECK_THINKFIRST(sv);
3010 if (SvTYPE(sv) < SVt_PVIV)
3011 sv_upgrade(sv,SVt_PVIV);
3014 if (!SvLEN(sv)) { /* make copy of shared string */
3015 char *pvx = SvPVX(sv);
3016 STRLEN len = SvCUR(sv);
3017 SvGROW(sv, len + 1);
3018 Move(pvx,SvPVX(sv),len,char);
3022 SvFLAGS(sv) |= SVf_OOK;
3024 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3025 delta = ptr - SvPVX(sv);
3033 =for apidoc sv_catpvn
3035 Concatenates the string onto the end of the string which is in the SV. The
3036 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3037 'set' magic. See C<sv_catpvn_mg>.
3043 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3048 junk = SvPV_force(sv, tlen);
3049 SvGROW(sv, tlen + len + 1);
3052 Move(ptr,SvPVX(sv)+tlen,len,char);
3055 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3060 =for apidoc sv_catpvn_mg
3062 Like C<sv_catpvn>, but also handles 'set' magic.
3068 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3070 sv_catpvn(sv,ptr,len);
3075 =for apidoc sv_catsv
3077 Concatenates the string from SV C<ssv> onto the end of the string in SV
3078 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3084 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3090 if (s = SvPV(sstr, len)) {
3092 sv_utf8_upgrade(dstr);
3093 sv_catpvn(dstr,s,len);
3100 =for apidoc sv_catsv_mg
3102 Like C<sv_catsv>, but also handles 'set' magic.
3108 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3110 sv_catsv(dstr,sstr);
3115 =for apidoc sv_catpv
3117 Concatenates the string onto the end of the string which is in the SV.
3118 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3124 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3126 register STRLEN len;
3132 junk = SvPV_force(sv, tlen);
3134 SvGROW(sv, tlen + len + 1);
3137 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3139 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3144 =for apidoc sv_catpv_mg
3146 Like C<sv_catpv>, but also handles 'set' magic.
3152 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3159 Perl_newSV(pTHX_ STRLEN len)
3165 sv_upgrade(sv, SVt_PV);
3166 SvGROW(sv, len + 1);
3171 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3174 =for apidoc sv_magic
3176 Adds magic to an SV.
3182 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3186 if (SvREADONLY(sv)) {
3188 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3189 Perl_croak(aTHX_ PL_no_modify);
3191 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3192 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3199 (void)SvUPGRADE(sv, SVt_PVMG);
3201 Newz(702,mg, 1, MAGIC);
3202 mg->mg_moremagic = SvMAGIC(sv);
3205 if (!obj || obj == sv || how == '#' || how == 'r')
3209 mg->mg_obj = SvREFCNT_inc(obj);
3210 mg->mg_flags |= MGf_REFCOUNTED;
3213 mg->mg_len = namlen;
3216 mg->mg_ptr = savepvn(name, namlen);
3217 else if (namlen == HEf_SVKEY)
3218 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3222 mg->mg_virtual = &PL_vtbl_sv;
3225 mg->mg_virtual = &PL_vtbl_amagic;
3228 mg->mg_virtual = &PL_vtbl_amagicelem;
3234 mg->mg_virtual = &PL_vtbl_bm;
3237 mg->mg_virtual = &PL_vtbl_regdata;
3240 mg->mg_virtual = &PL_vtbl_regdatum;
3243 mg->mg_virtual = &PL_vtbl_env;
3246 mg->mg_virtual = &PL_vtbl_fm;
3249 mg->mg_virtual = &PL_vtbl_envelem;
3252 mg->mg_virtual = &PL_vtbl_mglob;
3255 mg->mg_virtual = &PL_vtbl_isa;
3258 mg->mg_virtual = &PL_vtbl_isaelem;
3261 mg->mg_virtual = &PL_vtbl_nkeys;
3268 mg->mg_virtual = &PL_vtbl_dbline;
3272 mg->mg_virtual = &PL_vtbl_mutex;
3274 #endif /* USE_THREADS */
3275 #ifdef USE_LOCALE_COLLATE
3277 mg->mg_virtual = &PL_vtbl_collxfrm;
3279 #endif /* USE_LOCALE_COLLATE */
3281 mg->mg_virtual = &PL_vtbl_pack;
3285 mg->mg_virtual = &PL_vtbl_packelem;
3288 mg->mg_virtual = &PL_vtbl_regexp;
3291 mg->mg_virtual = &PL_vtbl_sig;
3294 mg->mg_virtual = &PL_vtbl_sigelem;
3297 mg->mg_virtual = &PL_vtbl_taint;
3301 mg->mg_virtual = &PL_vtbl_uvar;
3304 mg->mg_virtual = &PL_vtbl_vec;
3307 mg->mg_virtual = &PL_vtbl_substr;
3310 mg->mg_virtual = &PL_vtbl_defelem;
3313 mg->mg_virtual = &PL_vtbl_glob;
3316 mg->mg_virtual = &PL_vtbl_arylen;
3319 mg->mg_virtual = &PL_vtbl_pos;
3322 mg->mg_virtual = &PL_vtbl_backref;
3324 case '~': /* Reserved for use by extensions not perl internals. */
3325 /* Useful for attaching extension internal data to perl vars. */
3326 /* Note that multiple extensions may clash if magical scalars */
3327 /* etc holding private data from one are passed to another. */
3331 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3335 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3339 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3343 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3346 for (mg = *mgp; mg; mg = *mgp) {
3347 if (mg->mg_type == type) {
3348 MGVTBL* vtbl = mg->mg_virtual;
3349 *mgp = mg->mg_moremagic;
3350 if (vtbl && vtbl->svt_free)
3351 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3352 if (mg->mg_ptr && mg->mg_type != 'g')
3353 if (mg->mg_len >= 0)
3354 Safefree(mg->mg_ptr);
3355 else if (mg->mg_len == HEf_SVKEY)
3356 SvREFCNT_dec((SV*)mg->mg_ptr);
3357 if (mg->mg_flags & MGf_REFCOUNTED)
3358 SvREFCNT_dec(mg->mg_obj);
3362 mgp = &mg->mg_moremagic;
3366 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3373 Perl_sv_rvweaken(pTHX_ SV *sv)
3376 if (!SvOK(sv)) /* let undefs pass */
3379 Perl_croak(aTHX_ "Can't weaken a nonreference");
3380 else if (SvWEAKREF(sv)) {
3382 if (ckWARN(WARN_MISC))
3383 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3387 sv_add_backref(tsv, sv);
3394 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3398 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3399 av = (AV*)mg->mg_obj;
3402 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3403 SvREFCNT_dec(av); /* for sv_magic */
3409 S_sv_del_backref(pTHX_ SV *sv)
3416 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3417 Perl_croak(aTHX_ "panic: del_backref");
3418 av = (AV *)mg->mg_obj;
3423 svp[i] = &PL_sv_undef; /* XXX */
3430 =for apidoc sv_insert
3432 Inserts a string at the specified offset/length within the SV. Similar to
3433 the Perl substr() function.
3439 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3443 register char *midend;
3444 register char *bigend;
3450 Perl_croak(aTHX_ "Can't modify non-existent substring");
3451 SvPV_force(bigstr, curlen);
3452 if (offset + len > curlen) {
3453 SvGROW(bigstr, offset+len+1);
3454 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3455 SvCUR_set(bigstr, offset+len);
3459 i = littlelen - len;
3460 if (i > 0) { /* string might grow */
3461 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3462 mid = big + offset + len;
3463 midend = bigend = big + SvCUR(bigstr);
3466 while (midend > mid) /* shove everything down */
3467 *--bigend = *--midend;
3468 Move(little,big+offset,littlelen,char);
3474 Move(little,SvPVX(bigstr)+offset,len,char);
3479 big = SvPVX(bigstr);
3482 bigend = big + SvCUR(bigstr);
3484 if (midend > bigend)
3485 Perl_croak(aTHX_ "panic: sv_insert");
3487 if (mid - big > bigend - midend) { /* faster to shorten from end */
3489 Move(little, mid, littlelen,char);
3492 i = bigend - midend;
3494 Move(midend, mid, i,char);
3498 SvCUR_set(bigstr, mid - big);
3501 else if (i = mid - big) { /* faster from front */
3502 midend -= littlelen;
3504 sv_chop(bigstr,midend-i);
3509 Move(little, mid, littlelen,char);
3511 else if (littlelen) {
3512 midend -= littlelen;
3513 sv_chop(bigstr,midend);
3514 Move(little,midend,littlelen,char);
3517 sv_chop(bigstr,midend);
3522 /* make sv point to what nstr did */
3525 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3528 U32 refcnt = SvREFCNT(sv);
3529 SV_CHECK_THINKFIRST(sv);
3530 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3531 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3532 if (SvMAGICAL(sv)) {
3536 sv_upgrade(nsv, SVt_PVMG);
3537 SvMAGIC(nsv) = SvMAGIC(sv);
3538 SvFLAGS(nsv) |= SvMAGICAL(sv);
3544 assert(!SvREFCNT(sv));
3545 StructCopy(nsv,sv,SV);
3546 SvREFCNT(sv) = refcnt;
3547 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3552 Perl_sv_clear(pTHX_ register SV *sv)
3556 assert(SvREFCNT(sv) == 0);
3560 if (PL_defstash) { /* Still have a symbol table? */
3565 Zero(&tmpref, 1, SV);
3566 sv_upgrade(&tmpref, SVt_RV);
3568 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3569 SvREFCNT(&tmpref) = 1;
3572 stash = SvSTASH(sv);
3573 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3576 PUSHSTACKi(PERLSI_DESTROY);
3577 SvRV(&tmpref) = SvREFCNT_inc(sv);
3582 call_sv((SV*)GvCV(destructor),
3583 G_DISCARD|G_EVAL|G_KEEPERR);
3589 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3591 del_XRV(SvANY(&tmpref));
3594 if (PL_in_clean_objs)
3595 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3597 /* DESTROY gave object new lease on life */
3603 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3604 SvOBJECT_off(sv); /* Curse the object. */
3605 if (SvTYPE(sv) != SVt_PVIO)
3606 --PL_sv_objcount; /* XXX Might want something more general */
3609 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3612 switch (SvTYPE(sv)) {
3615 IoIFP(sv) != PerlIO_stdin() &&
3616 IoIFP(sv) != PerlIO_stdout() &&
3617 IoIFP(sv) != PerlIO_stderr())
3619 io_close((IO*)sv, FALSE);
3621 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3622 PerlDir_close(IoDIRP(sv));
3623 IoDIRP(sv) = (DIR*)NULL;
3624 Safefree(IoTOP_NAME(sv));
3625 Safefree(IoFMT_NAME(sv));
3626 Safefree(IoBOTTOM_NAME(sv));
3641 SvREFCNT_dec(LvTARG(sv));
3645 Safefree(GvNAME(sv));
3646 /* cannot decrease stash refcount yet, as we might recursively delete
3647 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3648 of stash until current sv is completely gone.
3649 -- JohnPC, 27 Mar 1998 */
3650 stash = GvSTASH(sv);
3656 (void)SvOOK_off(sv);
3664 SvREFCNT_dec(SvRV(sv));
3666 else if (SvPVX(sv) && SvLEN(sv))
3667 Safefree(SvPVX(sv));
3677 switch (SvTYPE(sv)) {
3693 del_XPVIV(SvANY(sv));
3696 del_XPVNV(SvANY(sv));
3699 del_XPVMG(SvANY(sv));
3702 del_XPVLV(SvANY(sv));
3705 del_XPVAV(SvANY(sv));
3708 del_XPVHV(SvANY(sv));
3711 del_XPVCV(SvANY(sv));
3714 del_XPVGV(SvANY(sv));
3715 /* code duplication for increased performance. */
3716 SvFLAGS(sv) &= SVf_BREAK;
3717 SvFLAGS(sv) |= SVTYPEMASK;
3718 /* decrease refcount of the stash that owns this GV, if any */
3720 SvREFCNT_dec(stash);
3721 return; /* not break, SvFLAGS reset already happened */
3723 del_XPVBM(SvANY(sv));
3726 del_XPVFM(SvANY(sv));
3729 del_XPVIO(SvANY(sv));
3732 SvFLAGS(sv) &= SVf_BREAK;
3733 SvFLAGS(sv) |= SVTYPEMASK;
3737 Perl_sv_newref(pTHX_ SV *sv)
3740 ATOMIC_INC(SvREFCNT(sv));
3745 Perl_sv_free(pTHX_ SV *sv)
3748 int refcount_is_zero;
3752 if (SvREFCNT(sv) == 0) {
3753 if (SvFLAGS(sv) & SVf_BREAK)
3755 if (PL_in_clean_all) /* All is fair */
3757 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3758 /* make sure SvREFCNT(sv)==0 happens very seldom */
3759 SvREFCNT(sv) = (~(U32)0)/2;
3762 if (ckWARN_d(WARN_INTERNAL))
3763 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3766 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3767 if (!refcount_is_zero)
3771 if (ckWARN_d(WARN_DEBUGGING))
3772 Perl_warner(aTHX_ WARN_DEBUGGING,
3773 "Attempt to free temp prematurely: SV 0x%"UVxf,
3778 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3779 /* make sure SvREFCNT(sv)==0 happens very seldom */
3780 SvREFCNT(sv) = (~(U32)0)/2;
3791 Returns the length of the string in the SV. See also C<SvCUR>.
3797 Perl_sv_len(pTHX_ register SV *sv)
3806 len = mg_length(sv);
3808 junk = SvPV(sv, len);
3813 Perl_sv_len_utf8(pTHX_ register SV *sv)
3824 len = mg_length(sv);
3827 s = (U8*)SvPV(sv, len);
3838 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
3843 I32 uoffset = *offsetp;
3849 start = s = (U8*)SvPV(sv, len);
3851 while (s < send && uoffset--)
3855 *offsetp = s - start;
3859 while (s < send && ulen--)
3869 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
3878 s = (U8*)SvPV(sv, len);
3880 Perl_croak(aTHX_ "panic: bad byte offset");
3881 send = s + *offsetp;
3889 if (ckWARN_d(WARN_UTF8))
3890 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
3900 Returns a boolean indicating whether the strings in the two SVs are
3907 Perl_sv_eq(pTHX_ register SV *str1, register SV *str2)
3919 pv1 = SvPV(str1, cur1);
3924 pv2 = SvPV(str2, cur2);
3929 return memEQ(pv1, pv2, cur1);
3935 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
3936 string in C<sv1> is less than, equal to, or greater than the string in
3943 Perl_sv_cmp(pTHX_ register SV *str1, register SV *str2)
3951 pv1 = SvPV(str1, cur1);
3959 if (SvPOK(str1) && SvUTF8(str1) != SvUTF8(str2) && !IN_BYTE) {
3960 /* must upgrade other to UTF8 first */
3962 sv_utf8_upgrade(str2);
3965 sv_utf8_upgrade(str1);
3966 /* refresh pointer and length */
3975 pv2 = sv_2pv(str2, &cur2);
3983 return cur2 ? -1 : 0;
3988 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
3991 return retval < 0 ? -1 : 1;
3996 return cur1 < cur2 ? -1 : 1;
4000 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4002 #ifdef USE_LOCALE_COLLATE
4008 if (PL_collation_standard)
4012 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4014 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4016 if (!pv1 || !len1) {
4027 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4030 return retval < 0 ? -1 : 1;
4033 * When the result of collation is equality, that doesn't mean
4034 * that there are no differences -- some locales exclude some
4035 * characters from consideration. So to avoid false equalities,
4036 * we use the raw string as a tiebreaker.
4042 #endif /* USE_LOCALE_COLLATE */
4044 return sv_cmp(sv1, sv2);
4047 #ifdef USE_LOCALE_COLLATE
4049 * Any scalar variable may carry an 'o' magic that contains the
4050 * scalar data of the variable transformed to such a format that
4051 * a normal memory comparison can be used to compare the data
4052 * according to the locale settings.
4055 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4059 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4060 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4065 Safefree(mg->mg_ptr);
4067 if ((xf = mem_collxfrm(s, len, &xlen))) {
4068 if (SvREADONLY(sv)) {
4071 return xf + sizeof(PL_collation_ix);
4074 sv_magic(sv, 0, 'o', 0, 0);
4075 mg = mg_find(sv, 'o');
4088 if (mg && mg->mg_ptr) {
4090 return mg->mg_ptr + sizeof(PL_collation_ix);
4098 #endif /* USE_LOCALE_COLLATE */
4101 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4106 register STDCHAR rslast;
4107 register STDCHAR *bp;
4111 SV_CHECK_THINKFIRST(sv);
4112 (void)SvUPGRADE(sv, SVt_PV);
4116 if (RsSNARF(PL_rs)) {
4120 else if (RsRECORD(PL_rs)) {
4121 I32 recsize, bytesread;
4124 /* Grab the size of the record we're getting */
4125 recsize = SvIV(SvRV(PL_rs));
4126 (void)SvPOK_only(sv); /* Validate pointer */
4127 buffer = SvGROW(sv, recsize + 1);
4130 /* VMS wants read instead of fread, because fread doesn't respect */
4131 /* RMS record boundaries. This is not necessarily a good thing to be */
4132 /* doing, but we've got no other real choice */
4133 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4135 bytesread = PerlIO_read(fp, buffer, recsize);
4137 SvCUR_set(sv, bytesread);
4138 buffer[bytesread] = '\0';
4139 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4141 else if (RsPARA(PL_rs)) {
4146 rsptr = SvPV(PL_rs, rslen);
4147 rslast = rslen ? rsptr[rslen - 1] : '\0';
4149 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4150 do { /* to make sure file boundaries work right */
4153 i = PerlIO_getc(fp);
4157 PerlIO_ungetc(fp,i);
4163 /* See if we know enough about I/O mechanism to cheat it ! */
4165 /* This used to be #ifdef test - it is made run-time test for ease
4166 of abstracting out stdio interface. One call should be cheap
4167 enough here - and may even be a macro allowing compile
4171 if (PerlIO_fast_gets(fp)) {
4174 * We're going to steal some values from the stdio struct
4175 * and put EVERYTHING in the innermost loop into registers.
4177 register STDCHAR *ptr;
4181 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4182 /* An ungetc()d char is handled separately from the regular
4183 * buffer, so we getc() it back out and stuff it in the buffer.
4185 i = PerlIO_getc(fp);
4186 if (i == EOF) return 0;
4187 *(--((*fp)->_ptr)) = (unsigned char) i;
4191 /* Here is some breathtakingly efficient cheating */
4193 cnt = PerlIO_get_cnt(fp); /* get count into register */
4194 (void)SvPOK_only(sv); /* validate pointer */
4195 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4196 if (cnt > 80 && SvLEN(sv) > append) {
4197 shortbuffered = cnt - SvLEN(sv) + append + 1;
4198 cnt -= shortbuffered;
4202 /* remember that cnt can be negative */
4203 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4208 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4209 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4210 DEBUG_P(PerlIO_printf(Perl_debug_log,
4211 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4212 DEBUG_P(PerlIO_printf(Perl_debug_log,
4213 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4214 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4215 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4220 while (cnt > 0) { /* this | eat */
4222 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4223 goto thats_all_folks; /* screams | sed :-) */
4227 Copy(ptr, bp, cnt, char); /* this | eat */
4228 bp += cnt; /* screams | dust */
4229 ptr += cnt; /* louder | sed :-) */
4234 if (shortbuffered) { /* oh well, must extend */
4235 cnt = shortbuffered;
4237 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4239 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4240 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4244 DEBUG_P(PerlIO_printf(Perl_debug_log,
4245 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4246 PTR2UV(ptr),(long)cnt));
4247 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4248 DEBUG_P(PerlIO_printf(Perl_debug_log,
4249 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4250 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4251 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4252 /* This used to call 'filbuf' in stdio form, but as that behaves like
4253 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4254 another abstraction. */
4255 i = PerlIO_getc(fp); /* get more characters */
4256 DEBUG_P(PerlIO_printf(Perl_debug_log,
4257 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4258 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4259 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4260 cnt = PerlIO_get_cnt(fp);
4261 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4262 DEBUG_P(PerlIO_printf(Perl_debug_log,
4263 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4265 if (i == EOF) /* all done for ever? */
4266 goto thats_really_all_folks;
4268 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4270 SvGROW(sv, bpx + cnt + 2);
4271 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4273 *bp++ = i; /* store character from PerlIO_getc */
4275 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4276 goto thats_all_folks;
4280 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4281 memNE((char*)bp - rslen, rsptr, rslen))
4282 goto screamer; /* go back to the fray */
4283 thats_really_all_folks:
4285 cnt += shortbuffered;
4286 DEBUG_P(PerlIO_printf(Perl_debug_log,
4287 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4288 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4289 DEBUG_P(PerlIO_printf(Perl_debug_log,
4290 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4291 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4292 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4294 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4295 DEBUG_P(PerlIO_printf(Perl_debug_log,
4296 "Screamer: done, len=%ld, string=|%.*s|\n",
4297 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4302 /*The big, slow, and stupid way */
4305 /* Need to work around EPOC SDK features */
4306 /* On WINS: MS VC5 generates calls to _chkstk, */
4307 /* if a `large' stack frame is allocated */
4308 /* gcc on MARM does not generate calls like these */
4314 register STDCHAR *bpe = buf + sizeof(buf);
4316 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4317 ; /* keep reading */
4321 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4322 /* Accomodate broken VAXC compiler, which applies U8 cast to
4323 * both args of ?: operator, causing EOF to change into 255
4325 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4329 sv_catpvn(sv, (char *) buf, cnt);
4331 sv_setpvn(sv, (char *) buf, cnt);
4333 if (i != EOF && /* joy */
4335 SvCUR(sv) < rslen ||
4336 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4340 * If we're reading from a TTY and we get a short read,
4341 * indicating that the user hit his EOF character, we need
4342 * to notice it now, because if we try to read from the TTY
4343 * again, the EOF condition will disappear.
4345 * The comparison of cnt to sizeof(buf) is an optimization
4346 * that prevents unnecessary calls to feof().
4350 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4355 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4356 while (i != EOF) { /* to make sure file boundaries work right */
4357 i = PerlIO_getc(fp);
4359 PerlIO_ungetc(fp,i);
4365 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4372 Auto-increment of the value in the SV.
4378 Perl_sv_inc(pTHX_ register SV *sv)
4387 if (SvTHINKFIRST(sv)) {
4388 if (SvREADONLY(sv)) {
4390 if (PL_curcop != &PL_compiling)
4391 Perl_croak(aTHX_ PL_no_modify);
4395 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4397 i = PTR2IV(SvRV(sv));
4402 flags = SvFLAGS(sv);
4403 if (flags & SVp_NOK) {
4404 (void)SvNOK_only(sv);
4408 if (flags & SVp_IOK) {
4410 if (SvUVX(sv) == UV_MAX)
4411 sv_setnv(sv, (NV)UV_MAX + 1.0);
4413 (void)SvIOK_only_UV(sv);
4416 if (SvIVX(sv) == IV_MAX)
4417 sv_setnv(sv, (NV)IV_MAX + 1.0);
4419 (void)SvIOK_only(sv);
4425 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4426 if ((flags & SVTYPEMASK) < SVt_PVNV)
4427 sv_upgrade(sv, SVt_NV);
4429 (void)SvNOK_only(sv);
4433 while (isALPHA(*d)) d++;
4434 while (isDIGIT(*d)) d++;
4436 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4440 while (d >= SvPVX(sv)) {
4448 /* MKS: The original code here died if letters weren't consecutive.
4449 * at least it didn't have to worry about non-C locales. The
4450 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4451 * arranged in order (although not consecutively) and that only
4452 * [A-Za-z] are accepted by isALPHA in the C locale.
4454 if (*d != 'z' && *d != 'Z') {
4455 do { ++*d; } while (!isALPHA(*d));
4458 *(d--) -= 'z' - 'a';
4463 *(d--) -= 'z' - 'a' + 1;
4467 /* oh,oh, the number grew */
4468 SvGROW(sv, SvCUR(sv) + 2);
4470 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4481 Auto-decrement of the value in the SV.
4487 Perl_sv_dec(pTHX_ register SV *sv)
4495 if (SvTHINKFIRST(sv)) {
4496 if (SvREADONLY(sv)) {
4498 if (PL_curcop != &PL_compiling)
4499 Perl_croak(aTHX_ PL_no_modify);
4503 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4505 i = PTR2IV(SvRV(sv));
4510 flags = SvFLAGS(sv);
4511 if (flags & SVp_NOK) {
4513 (void)SvNOK_only(sv);
4516 if (flags & SVp_IOK) {
4518 if (SvUVX(sv) == 0) {
4519 (void)SvIOK_only(sv);
4523 (void)SvIOK_only_UV(sv);
4527 if (SvIVX(sv) == IV_MIN)
4528 sv_setnv(sv, (NV)IV_MIN - 1.0);
4530 (void)SvIOK_only(sv);
4536 if (!(flags & SVp_POK)) {
4537 if ((flags & SVTYPEMASK) < SVt_PVNV)
4538 sv_upgrade(sv, SVt_NV);
4540 (void)SvNOK_only(sv);
4543 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4547 =for apidoc sv_mortalcopy
4549 Creates a new SV which is a copy of the original SV. The new SV is marked
4555 /* Make a string that will exist for the duration of the expression
4556 * evaluation. Actually, it may have to last longer than that, but
4557 * hopefully we won't free it until it has been assigned to a
4558 * permanent location. */
4561 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4567 sv_setsv(sv,oldstr);
4569 PL_tmps_stack[++PL_tmps_ix] = sv;
4575 =for apidoc sv_newmortal
4577 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4583 Perl_sv_newmortal(pTHX)
4589 SvFLAGS(sv) = SVs_TEMP;
4591 PL_tmps_stack[++PL_tmps_ix] = sv;
4596 =for apidoc sv_2mortal
4598 Marks an SV as mortal. The SV will be destroyed when the current context
4604 /* same thing without the copying */
4607 Perl_sv_2mortal(pTHX_ register SV *sv)
4612 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4615 PL_tmps_stack[++PL_tmps_ix] = sv;
4623 Creates a new SV and copies a string into it. The reference count for the
4624 SV is set to 1. If C<len> is zero, Perl will compute the length using
4625 strlen(). For efficiency, consider using C<newSVpvn> instead.
4631 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4638 sv_setpvn(sv,s,len);
4643 =for apidoc newSVpvn
4645 Creates a new SV and copies a string into it. The reference count for the
4646 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4647 string. You are responsible for ensuring that the source string is at least
4654 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4659 sv_setpvn(sv,s,len);
4663 #if defined(PERL_IMPLICIT_CONTEXT)
4665 Perl_newSVpvf_nocontext(const char* pat, ...)
4670 va_start(args, pat);
4671 sv = vnewSVpvf(pat, &args);
4678 =for apidoc newSVpvf
4680 Creates a new SV an initialize it with the string formatted like
4687 Perl_newSVpvf(pTHX_ const char* pat, ...)
4691 va_start(args, pat);
4692 sv = vnewSVpvf(pat, &args);
4698 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4702 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4709 Creates a new SV and copies a floating point value into it.
4710 The reference count for the SV is set to 1.
4716 Perl_newSVnv(pTHX_ NV n)
4728 Creates a new SV and copies an integer into it. The reference count for the
4735 Perl_newSViv(pTHX_ IV i)
4745 =for apidoc newRV_noinc
4747 Creates an RV wrapper for an SV. The reference count for the original
4748 SV is B<not> incremented.
4754 Perl_newRV_noinc(pTHX_ SV *tmpRef)
4760 sv_upgrade(sv, SVt_RV);
4767 /* newRV_inc is #defined to newRV in sv.h */
4769 Perl_newRV(pTHX_ SV *tmpRef)
4771 return newRV_noinc(SvREFCNT_inc(tmpRef));
4777 Creates a new SV which is an exact duplicate of the original SV.
4782 /* make an exact duplicate of old */
4785 Perl_newSVsv(pTHX_ register SV *old)
4792 if (SvTYPE(old) == SVTYPEMASK) {
4793 if (ckWARN_d(WARN_INTERNAL))
4794 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
4809 Perl_sv_reset(pTHX_ register char *s, HV *stash)
4817 char todo[PERL_UCHAR_MAX+1];
4822 if (!*s) { /* reset ?? searches */
4823 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
4824 pm->op_pmdynflags &= ~PMdf_USED;
4829 /* reset variables */
4831 if (!HvARRAY(stash))
4834 Zero(todo, 256, char);
4836 i = (unsigned char)*s;
4840 max = (unsigned char)*s++;
4841 for ( ; i <= max; i++) {
4844 for (i = 0; i <= (I32) HvMAX(stash); i++) {
4845 for (entry = HvARRAY(stash)[i];
4847 entry = HeNEXT(entry))
4849 if (!todo[(U8)*HeKEY(entry)])
4851 gv = (GV*)HeVAL(entry);
4853 if (SvTHINKFIRST(sv)) {
4854 if (!SvREADONLY(sv) && SvROK(sv))
4859 if (SvTYPE(sv) >= SVt_PV) {
4861 if (SvPVX(sv) != Nullch)
4868 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
4870 #ifndef VMS /* VMS has no environ array */
4872 environ[0] = Nullch;
4881 Perl_sv_2io(pTHX_ SV *sv)
4887 switch (SvTYPE(sv)) {
4895 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
4899 Perl_croak(aTHX_ PL_no_usym, "filehandle");
4901 return sv_2io(SvRV(sv));
4902 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
4908 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
4915 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
4922 return *gvp = Nullgv, Nullcv;
4923 switch (SvTYPE(sv)) {
4943 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
4944 tryAMAGICunDEREF(to_cv);
4947 if (SvTYPE(sv) == SVt_PVCV) {
4956 Perl_croak(aTHX_ "Not a subroutine reference");
4961 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
4967 if (lref && !GvCVu(gv)) {
4970 tmpsv = NEWSV(704,0);
4971 gv_efullname3(tmpsv, gv, Nullch);
4972 /* XXX this is probably not what they think they're getting.
4973 * It has the same effect as "sub name;", i.e. just a forward
4975 newSUB(start_subparse(FALSE, 0),
4976 newSVOP(OP_CONST, 0, tmpsv),
4981 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
4988 Perl_sv_true(pTHX_ register SV *sv)
4995 if ((tXpv = (XPV*)SvANY(sv)) &&
4996 (tXpv->xpv_cur > 1 ||
4997 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5004 return SvIVX(sv) != 0;
5007 return SvNVX(sv) != 0.0;
5009 return sv_2bool(sv);
5015 Perl_sv_iv(pTHX_ register SV *sv)
5019 return (IV)SvUVX(sv);
5026 Perl_sv_uv(pTHX_ register SV *sv)
5031 return (UV)SvIVX(sv);
5037 Perl_sv_nv(pTHX_ register SV *sv)
5045 Perl_sv_pv(pTHX_ SV *sv)
5052 return sv_2pv(sv, &n_a);
5056 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5062 return sv_2pv(sv, lp);
5066 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5070 if (SvTHINKFIRST(sv) && !SvROK(sv))
5071 sv_force_normal(sv);
5077 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5079 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5080 PL_op_name[PL_op->op_type]);
5084 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5089 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5090 SvGROW(sv, len + 1);
5091 Move(s,SvPVX(sv),len,char);
5096 SvPOK_on(sv); /* validate pointer */
5098 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5099 PTR2UV(sv),SvPVX(sv)));
5106 Perl_sv_pvbyte(pTHX_ SV *sv)
5112 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5114 return sv_pvn(sv,lp);
5118 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5120 return sv_pvn_force(sv,lp);
5124 Perl_sv_pvutf8(pTHX_ SV *sv)
5126 sv_utf8_upgrade(sv);
5131 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5133 sv_utf8_upgrade(sv);
5134 return sv_pvn(sv,lp);
5138 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5140 sv_utf8_upgrade(sv);
5141 return sv_pvn_force(sv,lp);
5145 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5147 if (ob && SvOBJECT(sv))
5148 return HvNAME(SvSTASH(sv));
5150 switch (SvTYPE(sv)) {
5164 case SVt_PVLV: return "LVALUE";
5165 case SVt_PVAV: return "ARRAY";
5166 case SVt_PVHV: return "HASH";
5167 case SVt_PVCV: return "CODE";
5168 case SVt_PVGV: return "GLOB";
5169 case SVt_PVFM: return "FORMAT";
5170 default: return "UNKNOWN";
5176 =for apidoc sv_isobject
5178 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5179 object. If the SV is not an RV, or if the object is not blessed, then this
5186 Perl_sv_isobject(pTHX_ SV *sv)
5203 Returns a boolean indicating whether the SV is blessed into the specified
5204 class. This does not check for subtypes; use C<sv_derived_from> to verify
5205 an inheritance relationship.
5211 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5223 return strEQ(HvNAME(SvSTASH(sv)), name);
5229 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5230 it will be upgraded to one. If C<classname> is non-null then the new SV will
5231 be blessed in the specified package. The new SV is returned and its
5232 reference count is 1.
5238 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5245 SV_CHECK_THINKFIRST(rv);
5248 if (SvTYPE(rv) < SVt_RV)
5249 sv_upgrade(rv, SVt_RV);
5256 HV* stash = gv_stashpv(classname, TRUE);
5257 (void)sv_bless(rv, stash);
5263 =for apidoc sv_setref_pv
5265 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5266 argument will be upgraded to an RV. That RV will be modified to point to
5267 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5268 into the SV. The C<classname> argument indicates the package for the
5269 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5270 will be returned and will have a reference count of 1.
5272 Do not use with other Perl types such as HV, AV, SV, CV, because those
5273 objects will become corrupted by the pointer copy process.
5275 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5281 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5284 sv_setsv(rv, &PL_sv_undef);
5288 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5293 =for apidoc sv_setref_iv
5295 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5296 argument will be upgraded to an RV. That RV will be modified to point to
5297 the new SV. The C<classname> argument indicates the package for the
5298 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5299 will be returned and will have a reference count of 1.
5305 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5307 sv_setiv(newSVrv(rv,classname), iv);
5312 =for apidoc sv_setref_nv
5314 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5315 argument will be upgraded to an RV. That RV will be modified to point to
5316 the new SV. The C<classname> argument indicates the package for the
5317 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5318 will be returned and will have a reference count of 1.
5324 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5326 sv_setnv(newSVrv(rv,classname), nv);
5331 =for apidoc sv_setref_pvn
5333 Copies a string into a new SV, optionally blessing the SV. The length of the
5334 string must be specified with C<n>. The C<rv> argument will be upgraded to
5335 an RV. That RV will be modified to point to the new SV. The C<classname>
5336 argument indicates the package for the blessing. Set C<classname> to
5337 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5338 a reference count of 1.
5340 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5346 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5348 sv_setpvn(newSVrv(rv,classname), pv, n);
5353 =for apidoc sv_bless
5355 Blesses an SV into a specified package. The SV must be an RV. The package
5356 must be designated by its stash (see C<gv_stashpv()>). The reference count
5357 of the SV is unaffected.
5363 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5368 Perl_croak(aTHX_ "Can't bless non-reference value");
5370 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5371 if (SvREADONLY(tmpRef))
5372 Perl_croak(aTHX_ PL_no_modify);
5373 if (SvOBJECT(tmpRef)) {
5374 if (SvTYPE(tmpRef) != SVt_PVIO)
5376 SvREFCNT_dec(SvSTASH(tmpRef));
5379 SvOBJECT_on(tmpRef);
5380 if (SvTYPE(tmpRef) != SVt_PVIO)
5382 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5383 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5394 S_sv_unglob(pTHX_ SV *sv)
5398 assert(SvTYPE(sv) == SVt_PVGV);
5403 SvREFCNT_dec(GvSTASH(sv));
5404 GvSTASH(sv) = Nullhv;
5406 sv_unmagic(sv, '*');
5407 Safefree(GvNAME(sv));
5410 /* need to keep SvANY(sv) in the right arena */
5411 xpvmg = new_XPVMG();
5412 StructCopy(SvANY(sv), xpvmg, XPVMG);
5413 del_XPVGV(SvANY(sv));
5416 SvFLAGS(sv) &= ~SVTYPEMASK;
5417 SvFLAGS(sv) |= SVt_PVMG;
5421 =for apidoc sv_unref
5423 Unsets the RV status of the SV, and decrements the reference count of
5424 whatever was being referenced by the RV. This can almost be thought of
5425 as a reversal of C<newSVrv>. See C<SvROK_off>.
5431 Perl_sv_unref(pTHX_ SV *sv)
5435 if (SvWEAKREF(sv)) {
5443 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5446 sv_2mortal(rv); /* Schedule for freeing later */
5450 Perl_sv_taint(pTHX_ SV *sv)
5452 sv_magic((sv), Nullsv, 't', Nullch, 0);
5456 Perl_sv_untaint(pTHX_ SV *sv)
5458 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5459 MAGIC *mg = mg_find(sv, 't');
5466 Perl_sv_tainted(pTHX_ SV *sv)
5468 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5469 MAGIC *mg = mg_find(sv, 't');
5470 if (mg && ((mg->mg_len & 1) || (mg->mg_len & 2) && mg->mg_obj == sv))
5477 =for apidoc sv_setpviv
5479 Copies an integer into the given SV, also updating its string value.
5480 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5486 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5488 char buf[TYPE_CHARS(UV)];
5490 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5492 sv_setpvn(sv, ptr, ebuf - ptr);
5497 =for apidoc sv_setpviv_mg
5499 Like C<sv_setpviv>, but also handles 'set' magic.
5505 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5507 char buf[TYPE_CHARS(UV)];
5509 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5511 sv_setpvn(sv, ptr, ebuf - ptr);
5515 #if defined(PERL_IMPLICIT_CONTEXT)
5517 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5521 va_start(args, pat);
5522 sv_vsetpvf(sv, pat, &args);
5528 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5532 va_start(args, pat);
5533 sv_vsetpvf_mg(sv, pat, &args);
5539 =for apidoc sv_setpvf
5541 Processes its arguments like C<sprintf> and sets an SV to the formatted
5542 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5548 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5551 va_start(args, pat);
5552 sv_vsetpvf(sv, pat, &args);
5557 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5559 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5563 =for apidoc sv_setpvf_mg
5565 Like C<sv_setpvf>, but also handles 'set' magic.
5571 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5574 va_start(args, pat);
5575 sv_vsetpvf_mg(sv, pat, &args);
5580 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5582 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5586 #if defined(PERL_IMPLICIT_CONTEXT)
5588 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5592 va_start(args, pat);
5593 sv_vcatpvf(sv, pat, &args);
5598 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5602 va_start(args, pat);
5603 sv_vcatpvf_mg(sv, pat, &args);
5609 =for apidoc sv_catpvf
5611 Processes its arguments like C<sprintf> and appends the formatted output
5612 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5613 typically be called after calling this function to handle 'set' magic.
5619 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5622 va_start(args, pat);
5623 sv_vcatpvf(sv, pat, &args);
5628 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5630 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5634 =for apidoc sv_catpvf_mg
5636 Like C<sv_catpvf>, but also handles 'set' magic.
5642 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5645 va_start(args, pat);
5646 sv_vcatpvf_mg(sv, pat, &args);
5651 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5653 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5658 =for apidoc sv_vsetpvfn
5660 Works like C<vcatpvfn> but copies the text into the SV instead of
5667 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5669 sv_setpvn(sv, "", 0);
5670 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5674 =for apidoc sv_vcatpvfn
5676 Processes its arguments like C<vsprintf> and appends the formatted output
5677 to an SV. Uses an array of SVs if the C style variable argument list is
5678 missing (NULL). When running with taint checks enabled, indicates via
5679 C<maybe_tainted> if results are untrustworthy (often due to the use of
5686 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5694 static char nullstr[] = "(null)";
5697 /* no matter what, this is a string now */
5698 (void)SvPV_force(sv, origlen);
5700 /* special-case "", "%s", and "%_" */
5703 if (patlen == 2 && pat[0] == '%') {
5707 char *s = va_arg(*args, char*);
5708 sv_catpv(sv, s ? s : nullstr);
5710 else if (svix < svmax) {
5711 sv_catsv(sv, *svargs);
5712 if (DO_UTF8(*svargs))
5718 argsv = va_arg(*args, SV*);
5719 sv_catsv(sv, argsv);
5724 /* See comment on '_' below */
5729 patend = (char*)pat + patlen;
5730 for (p = (char*)pat; p < patend; p = q) {
5733 bool vectorize = FALSE;
5740 bool has_precis = FALSE;
5742 bool is_utf = FALSE;
5745 U8 utf8buf[UTF8_MAXLEN];
5746 STRLEN esignlen = 0;
5748 char *eptr = Nullch;
5750 /* Times 4: a decimal digit takes more than 3 binary digits.
5751 * NV_DIG: mantissa takes than many decimal digits.
5752 * Plus 32: Playing safe. */
5753 char ebuf[IV_DIG * 4 + NV_DIG + 32];
5754 /* large enough for "%#.#f" --chip */
5755 /* what about long double NVs? --jhi */
5758 U8 *vecstr = Null(U8*);
5770 STRLEN dotstrlen = 1;
5772 for (q = p; q < patend && *q != '%'; ++q) ;
5774 sv_catpvn(sv, p, q - p);
5803 case '*': /* printf("%*vX",":",$ipv6addr) */
5808 vecsv = va_arg(*args, SV*);
5809 else if (svix < svmax)
5810 vecsv = svargs[svix++];
5811 dotstr = SvPVx(vecsv,dotstrlen);
5820 vecsv = va_arg(*args, SV*);
5821 else if (svix < svmax)
5822 vecsv = svargs[svix++];
5823 vecstr = (U8*)SvPVx(vecsv,veclen);
5824 utf = DO_UTF8(vecsv);
5836 case '1': case '2': case '3':
5837 case '4': case '5': case '6':
5838 case '7': case '8': case '9':
5841 width = width * 10 + (*q++ - '0');
5846 i = va_arg(*args, int);
5848 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
5850 width = (i < 0) ? -i : i;
5861 i = va_arg(*args, int);
5863 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
5864 precis = (i < 0) ? 0 : i;
5870 precis = precis * 10 + (*q++ - '0');
5887 if (*(q + 1) == 'l') { /* lld */
5914 uv = va_arg(*args, int);
5916 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
5917 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
5918 eptr = (char*)utf8buf;
5919 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
5931 eptr = va_arg(*args, char*);
5933 #ifdef MACOS_TRADITIONAL
5934 /* On MacOS, %#s format is used for Pascal strings */
5939 elen = strlen(eptr);
5942 elen = sizeof nullstr - 1;
5945 else if (svix < svmax) {
5946 argsv = svargs[svix++];
5947 eptr = SvPVx(argsv, elen);
5948 if (DO_UTF8(argsv)) {
5949 if (has_precis && precis < elen) {
5951 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
5954 if (width) { /* fudge width (can't fudge elen) */
5955 width += elen - sv_len_utf8(argsv);
5964 * The "%_" hack might have to be changed someday,
5965 * if ISO or ANSI decide to use '_' for something.
5966 * So we keep it hidden from users' code.
5970 argsv = va_arg(*args,SV*);
5971 eptr = SvPVx(argsv, elen);
5977 if (has_precis && elen > precis)
5985 uv = PTR2UV(va_arg(*args, void*));
5987 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
6007 iv = (IV)utf8_to_uv(vecstr, &ulen);
6017 case 'h': iv = (short)va_arg(*args, int); break;
6018 default: iv = va_arg(*args, int); break;
6019 case 'l': iv = va_arg(*args, long); break;
6020 case 'V': iv = va_arg(*args, IV); break;
6022 case 'q': iv = va_arg(*args, Quad_t); break;
6027 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6029 case 'h': iv = (short)iv; break;
6030 default: iv = (int)iv; break;
6031 case 'l': iv = (long)iv; break;
6034 case 'q': iv = (Quad_t)iv; break;
6041 esignbuf[esignlen++] = plus;
6045 esignbuf[esignlen++] = '-';
6090 uv = utf8_to_uv(vecstr, &ulen);
6100 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6101 default: uv = va_arg(*args, unsigned); break;
6102 case 'l': uv = va_arg(*args, unsigned long); break;
6103 case 'V': uv = va_arg(*args, UV); break;
6105 case 'q': uv = va_arg(*args, Quad_t); break;
6110 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6112 case 'h': uv = (unsigned short)uv; break;
6113 default: uv = (unsigned)uv; break;
6114 case 'l': uv = (unsigned long)uv; break;
6117 case 'q': uv = (Quad_t)uv; break;
6123 eptr = ebuf + sizeof ebuf;
6129 p = (char*)((c == 'X')
6130 ? "0123456789ABCDEF" : "0123456789abcdef");
6136 esignbuf[esignlen++] = '0';
6137 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6143 *--eptr = '0' + dig;
6145 if (alt && *eptr != '0')
6151 *--eptr = '0' + dig;
6154 esignbuf[esignlen++] = '0';
6155 esignbuf[esignlen++] = 'b';
6158 default: /* it had better be ten or less */
6159 #if defined(PERL_Y2KWARN)
6160 if (ckWARN(WARN_Y2K)) {
6162 char *s = SvPV(sv,n);
6163 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6164 && (n == 2 || !isDIGIT(s[n-3])))
6166 Perl_warner(aTHX_ WARN_Y2K,
6167 "Possible Y2K bug: %%%c %s",
6168 c, "format string following '19'");
6174 *--eptr = '0' + dig;
6175 } while (uv /= base);
6178 elen = (ebuf + sizeof ebuf) - eptr;
6181 zeros = precis - elen;
6182 else if (precis == 0 && elen == 1 && *eptr == '0')
6187 /* FLOATING POINT */
6190 c = 'f'; /* maybe %F isn't supported here */
6196 /* This is evil, but floating point is even more evil */
6200 nv = va_arg(*args, NV);
6202 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6205 if (c != 'e' && c != 'E') {
6207 (void)frexp(nv, &i);
6208 if (i == PERL_INT_MIN)
6209 Perl_die(aTHX_ "panic: frexp");
6211 need = BIT_DIGITS(i);
6213 need += has_precis ? precis : 6; /* known default */
6217 need += 20; /* fudge factor */
6218 if (PL_efloatsize < need) {
6219 Safefree(PL_efloatbuf);
6220 PL_efloatsize = need + 20; /* more fudge */
6221 New(906, PL_efloatbuf, PL_efloatsize, char);
6222 PL_efloatbuf[0] = '\0';
6225 eptr = ebuf + sizeof ebuf;
6228 #ifdef USE_LONG_DOUBLE
6230 char* p = PERL_PRIfldbl + sizeof(PERL_PRIfldbl) - 3;
6231 while (p >= PERL_PRIfldbl) { *--eptr = *p--; }
6236 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6241 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6254 RESTORE_NUMERIC_STANDARD();
6255 (void)sprintf(PL_efloatbuf, eptr, nv);
6256 RESTORE_NUMERIC_LOCAL();
6259 eptr = PL_efloatbuf;
6260 elen = strlen(PL_efloatbuf);
6267 i = SvCUR(sv) - origlen;
6270 case 'h': *(va_arg(*args, short*)) = i; break;
6271 default: *(va_arg(*args, int*)) = i; break;
6272 case 'l': *(va_arg(*args, long*)) = i; break;
6273 case 'V': *(va_arg(*args, IV*)) = i; break;
6275 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6279 else if (svix < svmax)
6280 sv_setuv(svargs[svix++], (UV)i);
6281 continue; /* not "break" */
6288 if (!args && ckWARN(WARN_PRINTF) &&
6289 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6290 SV *msg = sv_newmortal();
6291 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6292 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6295 Perl_sv_catpvf(aTHX_ msg,
6296 "\"%%%c\"", c & 0xFF);
6298 Perl_sv_catpvf(aTHX_ msg,
6299 "\"%%\\%03"UVof"\"",
6302 sv_catpv(msg, "end of string");
6303 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6306 /* output mangled stuff ... */
6312 /* ... right here, because formatting flags should not apply */
6313 SvGROW(sv, SvCUR(sv) + elen + 1);
6315 memcpy(p, eptr, elen);
6318 SvCUR(sv) = p - SvPVX(sv);
6319 continue; /* not "break" */
6322 have = esignlen + zeros + elen;
6323 need = (have > width ? have : width);
6326 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6328 if (esignlen && fill == '0') {
6329 for (i = 0; i < esignlen; i++)
6333 memset(p, fill, gap);
6336 if (esignlen && fill != '0') {
6337 for (i = 0; i < esignlen; i++)
6341 for (i = zeros; i; i--)
6345 memcpy(p, eptr, elen);
6349 memset(p, ' ', gap);
6354 memcpy(p, dotstr, dotstrlen);
6358 vectorize = FALSE; /* done iterating over vecstr */
6363 SvCUR(sv) = p - SvPVX(sv);
6371 #if defined(USE_ITHREADS)
6373 #if defined(USE_THREADS)
6374 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6377 #ifndef OpREFCNT_inc
6378 # define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : Nullop)
6381 #ifndef GpREFCNT_inc
6382 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6386 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6387 #define av_dup(s) (AV*)sv_dup((SV*)s)
6388 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6389 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6390 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6391 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6392 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6393 #define io_dup(s) (IO*)sv_dup((SV*)s)
6394 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6395 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6396 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6397 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6398 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6401 Perl_re_dup(pTHX_ REGEXP *r)
6403 /* XXX fix when pmop->op_pmregexp becomes shared */
6404 return ReREFCNT_inc(r);
6408 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6412 return (PerlIO*)NULL;
6414 /* look for it in the table first */
6415 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6419 /* create anew and remember what it is */
6420 ret = PerlIO_fdupopen(fp);
6421 ptr_table_store(PL_ptr_table, fp, ret);
6426 Perl_dirp_dup(pTHX_ DIR *dp)
6435 Perl_gp_dup(pTHX_ GP *gp)
6440 /* look for it in the table first */
6441 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6445 /* create anew and remember what it is */
6446 Newz(0, ret, 1, GP);
6447 ptr_table_store(PL_ptr_table, gp, ret);
6450 ret->gp_refcnt = 0; /* must be before any other dups! */
6451 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6452 ret->gp_io = io_dup_inc(gp->gp_io);
6453 ret->gp_form = cv_dup_inc(gp->gp_form);
6454 ret->gp_av = av_dup_inc(gp->gp_av);
6455 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6456 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6457 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6458 ret->gp_cvgen = gp->gp_cvgen;
6459 ret->gp_flags = gp->gp_flags;
6460 ret->gp_line = gp->gp_line;
6461 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6466 Perl_mg_dup(pTHX_ MAGIC *mg)
6468 MAGIC *mgret = (MAGIC*)NULL;
6471 return (MAGIC*)NULL;
6472 /* look for it in the table first */
6473 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6477 for (; mg; mg = mg->mg_moremagic) {
6479 Newz(0, nmg, 1, MAGIC);
6483 mgprev->mg_moremagic = nmg;
6484 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6485 nmg->mg_private = mg->mg_private;
6486 nmg->mg_type = mg->mg_type;
6487 nmg->mg_flags = mg->mg_flags;
6488 if (mg->mg_type == 'r') {
6489 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6492 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6493 ? sv_dup_inc(mg->mg_obj)
6494 : sv_dup(mg->mg_obj);
6496 nmg->mg_len = mg->mg_len;
6497 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6498 if (mg->mg_ptr && mg->mg_type != 'g') {
6499 if (mg->mg_len >= 0) {
6500 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6501 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6502 AMT *amtp = (AMT*)mg->mg_ptr;
6503 AMT *namtp = (AMT*)nmg->mg_ptr;
6505 for (i = 1; i < NofAMmeth; i++) {
6506 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6510 else if (mg->mg_len == HEf_SVKEY)
6511 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6519 Perl_ptr_table_new(pTHX)
6522 Newz(0, tbl, 1, PTR_TBL_t);
6525 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6530 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6532 PTR_TBL_ENT_t *tblent;
6533 UV hash = PTR2UV(sv);
6535 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6536 for (; tblent; tblent = tblent->next) {
6537 if (tblent->oldval == sv)
6538 return tblent->newval;
6544 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6546 PTR_TBL_ENT_t *tblent, **otblent;
6547 /* XXX this may be pessimal on platforms where pointers aren't good
6548 * hash values e.g. if they grow faster in the most significant
6550 UV hash = PTR2UV(oldv);
6554 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6555 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6556 if (tblent->oldval == oldv) {
6557 tblent->newval = newv;
6562 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6563 tblent->oldval = oldv;
6564 tblent->newval = newv;
6565 tblent->next = *otblent;
6568 if (i && tbl->tbl_items > tbl->tbl_max)
6569 ptr_table_split(tbl);
6573 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6575 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6576 UV oldsize = tbl->tbl_max + 1;
6577 UV newsize = oldsize * 2;
6580 Renew(ary, newsize, PTR_TBL_ENT_t*);
6581 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6582 tbl->tbl_max = --newsize;
6584 for (i=0; i < oldsize; i++, ary++) {
6585 PTR_TBL_ENT_t **curentp, **entp, *ent;
6588 curentp = ary + oldsize;
6589 for (entp = ary, ent = *ary; ent; ent = *entp) {
6590 if ((newsize & PTR2UV(ent->oldval)) != i) {
6592 ent->next = *curentp;
6607 Perl_sv_dup(pTHX_ SV *sstr)
6614 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6616 /* look for it in the table first */
6617 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6621 /* create anew and remember what it is */
6623 ptr_table_store(PL_ptr_table, sstr, dstr);
6626 SvFLAGS(dstr) = SvFLAGS(sstr);
6627 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6628 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6631 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6632 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6633 PL_watch_pvx, SvPVX(sstr));
6636 switch (SvTYPE(sstr)) {
6641 SvANY(dstr) = new_XIV();
6642 SvIVX(dstr) = SvIVX(sstr);
6645 SvANY(dstr) = new_XNV();
6646 SvNVX(dstr) = SvNVX(sstr);
6649 SvANY(dstr) = new_XRV();
6650 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6653 SvANY(dstr) = new_XPV();
6654 SvCUR(dstr) = SvCUR(sstr);
6655 SvLEN(dstr) = SvLEN(sstr);
6657 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6658 else if (SvPVX(sstr) && SvLEN(sstr))
6659 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6661 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6664 SvANY(dstr) = new_XPVIV();
6665 SvCUR(dstr) = SvCUR(sstr);
6666 SvLEN(dstr) = SvLEN(sstr);
6667 SvIVX(dstr) = SvIVX(sstr);
6669 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6670 else if (SvPVX(sstr) && SvLEN(sstr))
6671 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6673 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6676 SvANY(dstr) = new_XPVNV();
6677 SvCUR(dstr) = SvCUR(sstr);
6678 SvLEN(dstr) = SvLEN(sstr);
6679 SvIVX(dstr) = SvIVX(sstr);
6680 SvNVX(dstr) = SvNVX(sstr);
6682 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6683 else if (SvPVX(sstr) && SvLEN(sstr))
6684 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6686 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6689 SvANY(dstr) = new_XPVMG();
6690 SvCUR(dstr) = SvCUR(sstr);
6691 SvLEN(dstr) = SvLEN(sstr);
6692 SvIVX(dstr) = SvIVX(sstr);
6693 SvNVX(dstr) = SvNVX(sstr);
6694 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6695 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6697 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6698 else if (SvPVX(sstr) && SvLEN(sstr))
6699 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6701 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6704 SvANY(dstr) = new_XPVBM();
6705 SvCUR(dstr) = SvCUR(sstr);
6706 SvLEN(dstr) = SvLEN(sstr);
6707 SvIVX(dstr) = SvIVX(sstr);
6708 SvNVX(dstr) = SvNVX(sstr);
6709 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6710 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6712 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6713 else if (SvPVX(sstr) && SvLEN(sstr))
6714 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6716 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6717 BmRARE(dstr) = BmRARE(sstr);
6718 BmUSEFUL(dstr) = BmUSEFUL(sstr);
6719 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
6722 SvANY(dstr) = new_XPVLV();
6723 SvCUR(dstr) = SvCUR(sstr);
6724 SvLEN(dstr) = SvLEN(sstr);
6725 SvIVX(dstr) = SvIVX(sstr);
6726 SvNVX(dstr) = SvNVX(sstr);
6727 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6728 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6730 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6731 else if (SvPVX(sstr) && SvLEN(sstr))
6732 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6734 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6735 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
6736 LvTARGLEN(dstr) = LvTARGLEN(sstr);
6737 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
6738 LvTYPE(dstr) = LvTYPE(sstr);
6741 SvANY(dstr) = new_XPVGV();
6742 SvCUR(dstr) = SvCUR(sstr);
6743 SvLEN(dstr) = SvLEN(sstr);
6744 SvIVX(dstr) = SvIVX(sstr);
6745 SvNVX(dstr) = SvNVX(sstr);
6746 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6747 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6749 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6750 else if (SvPVX(sstr) && SvLEN(sstr))
6751 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6753 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6754 GvNAMELEN(dstr) = GvNAMELEN(sstr);
6755 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
6756 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
6757 GvFLAGS(dstr) = GvFLAGS(sstr);
6758 GvGP(dstr) = gp_dup(GvGP(sstr));
6759 (void)GpREFCNT_inc(GvGP(dstr));
6762 SvANY(dstr) = new_XPVIO();
6763 SvCUR(dstr) = SvCUR(sstr);
6764 SvLEN(dstr) = SvLEN(sstr);
6765 SvIVX(dstr) = SvIVX(sstr);
6766 SvNVX(dstr) = SvNVX(sstr);
6767 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6768 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6770 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6771 else if (SvPVX(sstr) && SvLEN(sstr))
6772 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6774 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6775 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
6776 if (IoOFP(sstr) == IoIFP(sstr))
6777 IoOFP(dstr) = IoIFP(dstr);
6779 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
6780 /* PL_rsfp_filters entries have fake IoDIRP() */
6781 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
6782 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
6784 IoDIRP(dstr) = IoDIRP(sstr);
6785 IoLINES(dstr) = IoLINES(sstr);
6786 IoPAGE(dstr) = IoPAGE(sstr);
6787 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
6788 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
6789 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
6790 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
6791 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
6792 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
6793 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
6794 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
6795 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
6796 IoTYPE(dstr) = IoTYPE(sstr);
6797 IoFLAGS(dstr) = IoFLAGS(sstr);
6800 SvANY(dstr) = new_XPVAV();
6801 SvCUR(dstr) = SvCUR(sstr);
6802 SvLEN(dstr) = SvLEN(sstr);
6803 SvIVX(dstr) = SvIVX(sstr);
6804 SvNVX(dstr) = SvNVX(sstr);
6805 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6806 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6807 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
6808 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
6809 if (AvARRAY((AV*)sstr)) {
6810 SV **dst_ary, **src_ary;
6811 SSize_t items = AvFILLp((AV*)sstr) + 1;
6813 src_ary = AvARRAY((AV*)sstr);
6814 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
6815 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
6816 SvPVX(dstr) = (char*)dst_ary;
6817 AvALLOC((AV*)dstr) = dst_ary;
6818 if (AvREAL((AV*)sstr)) {
6820 *dst_ary++ = sv_dup_inc(*src_ary++);
6824 *dst_ary++ = sv_dup(*src_ary++);
6826 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
6827 while (items-- > 0) {
6828 *dst_ary++ = &PL_sv_undef;
6832 SvPVX(dstr) = Nullch;
6833 AvALLOC((AV*)dstr) = (SV**)NULL;
6837 SvANY(dstr) = new_XPVHV();
6838 SvCUR(dstr) = SvCUR(sstr);
6839 SvLEN(dstr) = SvLEN(sstr);
6840 SvIVX(dstr) = SvIVX(sstr);
6841 SvNVX(dstr) = SvNVX(sstr);
6842 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6843 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6844 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
6845 if (HvARRAY((HV*)sstr)) {
6848 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
6849 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
6850 Newz(0, dxhv->xhv_array,
6851 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
6852 while (i <= sxhv->xhv_max) {
6853 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
6854 !!HvSHAREKEYS(sstr));
6857 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
6860 SvPVX(dstr) = Nullch;
6861 HvEITER((HV*)dstr) = (HE*)NULL;
6863 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
6864 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
6867 SvANY(dstr) = new_XPVFM();
6868 FmLINES(dstr) = FmLINES(sstr);
6872 SvANY(dstr) = new_XPVCV();
6874 SvCUR(dstr) = SvCUR(sstr);
6875 SvLEN(dstr) = SvLEN(sstr);
6876 SvIVX(dstr) = SvIVX(sstr);
6877 SvNVX(dstr) = SvNVX(sstr);
6878 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6879 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6880 if (SvPVX(sstr) && SvLEN(sstr))
6881 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6883 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6884 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
6885 CvSTART(dstr) = CvSTART(sstr);
6886 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
6887 CvXSUB(dstr) = CvXSUB(sstr);
6888 CvXSUBANY(dstr) = CvXSUBANY(sstr);
6889 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
6890 CvDEPTH(dstr) = CvDEPTH(sstr);
6891 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
6892 /* XXX padlists are real, but pretend to be not */
6893 AvREAL_on(CvPADLIST(sstr));
6894 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
6895 AvREAL_off(CvPADLIST(sstr));
6896 AvREAL_off(CvPADLIST(dstr));
6899 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
6900 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
6901 CvFLAGS(dstr) = CvFLAGS(sstr);
6904 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
6908 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
6915 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
6920 return (PERL_CONTEXT*)NULL;
6922 /* look for it in the table first */
6923 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
6927 /* create anew and remember what it is */
6928 Newz(56, ncxs, max + 1, PERL_CONTEXT);
6929 ptr_table_store(PL_ptr_table, cxs, ncxs);
6932 PERL_CONTEXT *cx = &cxs[ix];
6933 PERL_CONTEXT *ncx = &ncxs[ix];
6934 ncx->cx_type = cx->cx_type;
6935 if (CxTYPE(cx) == CXt_SUBST) {
6936 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
6939 ncx->blk_oldsp = cx->blk_oldsp;
6940 ncx->blk_oldcop = cx->blk_oldcop;
6941 ncx->blk_oldretsp = cx->blk_oldretsp;
6942 ncx->blk_oldmarksp = cx->blk_oldmarksp;
6943 ncx->blk_oldscopesp = cx->blk_oldscopesp;
6944 ncx->blk_oldpm = cx->blk_oldpm;
6945 ncx->blk_gimme = cx->blk_gimme;
6946 switch (CxTYPE(cx)) {
6948 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
6949 ? cv_dup_inc(cx->blk_sub.cv)
6950 : cv_dup(cx->blk_sub.cv));
6951 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
6952 ? av_dup_inc(cx->blk_sub.argarray)
6954 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
6955 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
6956 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
6957 ncx->blk_sub.lval = cx->blk_sub.lval;
6960 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
6961 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
6962 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
6963 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
6964 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
6967 ncx->blk_loop.label = cx->blk_loop.label;
6968 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
6969 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
6970 ncx->blk_loop.next_op = cx->blk_loop.next_op;
6971 ncx->blk_loop.last_op = cx->blk_loop.last_op;
6972 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
6973 ? cx->blk_loop.iterdata
6974 : gv_dup((GV*)cx->blk_loop.iterdata));
6975 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
6976 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
6977 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
6978 ncx->blk_loop.iterix = cx->blk_loop.iterix;
6979 ncx->blk_loop.itermax = cx->blk_loop.itermax;
6982 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
6983 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
6984 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
6985 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
6998 Perl_si_dup(pTHX_ PERL_SI *si)
7003 return (PERL_SI*)NULL;
7005 /* look for it in the table first */
7006 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7010 /* create anew and remember what it is */
7011 Newz(56, nsi, 1, PERL_SI);
7012 ptr_table_store(PL_ptr_table, si, nsi);
7014 nsi->si_stack = av_dup_inc(si->si_stack);
7015 nsi->si_cxix = si->si_cxix;
7016 nsi->si_cxmax = si->si_cxmax;
7017 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7018 nsi->si_type = si->si_type;
7019 nsi->si_prev = si_dup(si->si_prev);
7020 nsi->si_next = si_dup(si->si_next);
7021 nsi->si_markoff = si->si_markoff;
7026 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7027 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7028 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7029 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7030 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7031 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7032 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7033 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7034 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7035 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7036 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7037 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7040 #define pv_dup_inc(p) SAVEPV(p)
7041 #define pv_dup(p) SAVEPV(p)
7042 #define svp_dup_inc(p,pp) any_dup(p,pp)
7045 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7052 /* look for it in the table first */
7053 ret = ptr_table_fetch(PL_ptr_table, v);
7057 /* see if it is part of the interpreter structure */
7058 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7059 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7067 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7069 ANY *ss = proto_perl->Tsavestack;
7070 I32 ix = proto_perl->Tsavestack_ix;
7071 I32 max = proto_perl->Tsavestack_max;
7084 void (*dptr) (void*);
7085 void (*dxptr) (pTHXo_ void*);
7087 Newz(54, nss, max, ANY);
7093 case SAVEt_ITEM: /* normal string */
7094 sv = (SV*)POPPTR(ss,ix);
7095 TOPPTR(nss,ix) = sv_dup_inc(sv);
7096 sv = (SV*)POPPTR(ss,ix);
7097 TOPPTR(nss,ix) = sv_dup_inc(sv);
7099 case SAVEt_SV: /* scalar reference */
7100 sv = (SV*)POPPTR(ss,ix);
7101 TOPPTR(nss,ix) = sv_dup_inc(sv);
7102 gv = (GV*)POPPTR(ss,ix);
7103 TOPPTR(nss,ix) = gv_dup_inc(gv);
7105 case SAVEt_GENERIC_SVREF: /* generic sv */
7106 case SAVEt_SVREF: /* scalar reference */
7107 sv = (SV*)POPPTR(ss,ix);
7108 TOPPTR(nss,ix) = sv_dup_inc(sv);
7109 ptr = POPPTR(ss,ix);
7110 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7112 case SAVEt_AV: /* array reference */
7113 av = (AV*)POPPTR(ss,ix);
7114 TOPPTR(nss,ix) = av_dup_inc(av);
7115 gv = (GV*)POPPTR(ss,ix);
7116 TOPPTR(nss,ix) = gv_dup(gv);
7118 case SAVEt_HV: /* hash reference */
7119 hv = (HV*)POPPTR(ss,ix);
7120 TOPPTR(nss,ix) = hv_dup_inc(hv);
7121 gv = (GV*)POPPTR(ss,ix);
7122 TOPPTR(nss,ix) = gv_dup(gv);
7124 case SAVEt_INT: /* int reference */
7125 ptr = POPPTR(ss,ix);
7126 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7127 intval = (int)POPINT(ss,ix);
7128 TOPINT(nss,ix) = intval;
7130 case SAVEt_LONG: /* long reference */
7131 ptr = POPPTR(ss,ix);
7132 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7133 longval = (long)POPLONG(ss,ix);
7134 TOPLONG(nss,ix) = longval;
7136 case SAVEt_I32: /* I32 reference */
7137 case SAVEt_I16: /* I16 reference */
7138 case SAVEt_I8: /* I8 reference */
7139 ptr = POPPTR(ss,ix);
7140 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7144 case SAVEt_IV: /* IV reference */
7145 ptr = POPPTR(ss,ix);
7146 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7150 case SAVEt_SPTR: /* SV* reference */
7151 ptr = POPPTR(ss,ix);
7152 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7153 sv = (SV*)POPPTR(ss,ix);
7154 TOPPTR(nss,ix) = sv_dup(sv);
7156 case SAVEt_VPTR: /* random* reference */
7157 ptr = POPPTR(ss,ix);
7158 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7159 ptr = POPPTR(ss,ix);
7160 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7162 case SAVEt_PPTR: /* char* reference */
7163 ptr = POPPTR(ss,ix);
7164 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7165 c = (char*)POPPTR(ss,ix);
7166 TOPPTR(nss,ix) = pv_dup(c);
7168 case SAVEt_HPTR: /* HV* reference */
7169 ptr = POPPTR(ss,ix);
7170 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7171 hv = (HV*)POPPTR(ss,ix);
7172 TOPPTR(nss,ix) = hv_dup(hv);
7174 case SAVEt_APTR: /* AV* reference */
7175 ptr = POPPTR(ss,ix);
7176 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7177 av = (AV*)POPPTR(ss,ix);
7178 TOPPTR(nss,ix) = av_dup(av);
7181 gv = (GV*)POPPTR(ss,ix);
7182 TOPPTR(nss,ix) = gv_dup(gv);
7184 case SAVEt_GP: /* scalar reference */
7185 gp = (GP*)POPPTR(ss,ix);
7186 TOPPTR(nss,ix) = gp = gp_dup(gp);
7187 (void)GpREFCNT_inc(gp);
7188 gv = (GV*)POPPTR(ss,ix);
7189 TOPPTR(nss,ix) = gv_dup_inc(c);
7190 c = (char*)POPPTR(ss,ix);
7191 TOPPTR(nss,ix) = pv_dup(c);
7198 sv = (SV*)POPPTR(ss,ix);
7199 TOPPTR(nss,ix) = sv_dup_inc(sv);
7202 ptr = POPPTR(ss,ix);
7203 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7204 /* these are assumed to be refcounted properly */
7205 switch (((OP*)ptr)->op_type) {
7212 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7215 TOPPTR(nss,ix) = Nullop;
7220 TOPPTR(nss,ix) = Nullop;
7223 c = (char*)POPPTR(ss,ix);
7224 TOPPTR(nss,ix) = pv_dup_inc(c);
7227 longval = POPLONG(ss,ix);
7228 TOPLONG(nss,ix) = longval;
7231 hv = (HV*)POPPTR(ss,ix);
7232 TOPPTR(nss,ix) = hv_dup_inc(hv);
7233 c = (char*)POPPTR(ss,ix);
7234 TOPPTR(nss,ix) = pv_dup_inc(c);
7238 case SAVEt_DESTRUCTOR:
7239 ptr = POPPTR(ss,ix);
7240 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7241 dptr = POPDPTR(ss,ix);
7242 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7244 case SAVEt_DESTRUCTOR_X:
7245 ptr = POPPTR(ss,ix);
7246 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7247 dxptr = POPDXPTR(ss,ix);
7248 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7250 case SAVEt_REGCONTEXT:
7256 case SAVEt_STACK_POS: /* Position on Perl stack */
7260 case SAVEt_AELEM: /* array element */
7261 sv = (SV*)POPPTR(ss,ix);
7262 TOPPTR(nss,ix) = sv_dup_inc(sv);
7265 av = (AV*)POPPTR(ss,ix);
7266 TOPPTR(nss,ix) = av_dup_inc(av);
7268 case SAVEt_HELEM: /* hash element */
7269 sv = (SV*)POPPTR(ss,ix);
7270 TOPPTR(nss,ix) = sv_dup_inc(sv);
7271 sv = (SV*)POPPTR(ss,ix);
7272 TOPPTR(nss,ix) = sv_dup_inc(sv);
7273 hv = (HV*)POPPTR(ss,ix);
7274 TOPPTR(nss,ix) = hv_dup_inc(hv);
7277 ptr = POPPTR(ss,ix);
7278 TOPPTR(nss,ix) = ptr;
7285 av = (AV*)POPPTR(ss,ix);
7286 TOPPTR(nss,ix) = av_dup(av);
7289 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7301 perl_clone(PerlInterpreter *proto_perl, UV flags)
7304 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7307 #ifdef PERL_IMPLICIT_SYS
7308 return perl_clone_using(proto_perl, flags,
7310 proto_perl->IMemShared,
7311 proto_perl->IMemParse,
7321 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7322 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7323 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7324 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7325 struct IPerlDir* ipD, struct IPerlSock* ipS,
7326 struct IPerlProc* ipP)
7328 /* XXX many of the string copies here can be optimized if they're
7329 * constants; they need to be allocated as common memory and just
7330 * their pointers copied. */
7336 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7338 PERL_SET_INTERP(pPerl);
7339 # else /* !PERL_OBJECT */
7340 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7341 PERL_SET_INTERP(my_perl);
7344 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7349 # else /* !DEBUGGING */
7350 Zero(my_perl, 1, PerlInterpreter);
7351 # endif /* DEBUGGING */
7355 PL_MemShared = ipMS;
7363 # endif /* PERL_OBJECT */
7364 #else /* !PERL_IMPLICIT_SYS */
7368 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7369 PERL_SET_INTERP(my_perl);
7372 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7377 # else /* !DEBUGGING */
7378 Zero(my_perl, 1, PerlInterpreter);
7379 # endif /* DEBUGGING */
7380 #endif /* PERL_IMPLICIT_SYS */
7383 PL_xiv_arenaroot = NULL;
7388 PL_xpviv_root = NULL;
7389 PL_xpvnv_root = NULL;
7390 PL_xpvcv_root = NULL;
7391 PL_xpvav_root = NULL;
7392 PL_xpvhv_root = NULL;
7393 PL_xpvmg_root = NULL;
7394 PL_xpvlv_root = NULL;
7395 PL_xpvbm_root = NULL;
7397 PL_nice_chunk = NULL;
7398 PL_nice_chunk_size = 0;
7401 PL_sv_root = Nullsv;
7402 PL_sv_arenaroot = Nullsv;
7404 PL_debug = proto_perl->Idebug;
7406 /* create SV map for pointer relocation */
7407 PL_ptr_table = ptr_table_new();
7409 /* initialize these special pointers as early as possible */
7410 SvANY(&PL_sv_undef) = NULL;
7411 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7412 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7413 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7416 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7418 SvANY(&PL_sv_no) = new_XPVNV();
7420 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7421 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7422 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7423 SvCUR(&PL_sv_no) = 0;
7424 SvLEN(&PL_sv_no) = 1;
7425 SvNVX(&PL_sv_no) = 0;
7426 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7429 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7431 SvANY(&PL_sv_yes) = new_XPVNV();
7433 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7434 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7435 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7436 SvCUR(&PL_sv_yes) = 1;
7437 SvLEN(&PL_sv_yes) = 2;
7438 SvNVX(&PL_sv_yes) = 1;
7439 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7441 /* create shared string table */
7442 PL_strtab = newHV();
7443 HvSHAREKEYS_off(PL_strtab);
7444 hv_ksplit(PL_strtab, 512);
7445 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7447 PL_compiling = proto_perl->Icompiling;
7448 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7449 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7450 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7451 if (!specialWARN(PL_compiling.cop_warnings))
7452 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7453 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7455 /* pseudo environmental stuff */
7456 PL_origargc = proto_perl->Iorigargc;
7458 New(0, PL_origargv, i+1, char*);
7459 PL_origargv[i] = '\0';
7461 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7463 PL_envgv = gv_dup(proto_perl->Ienvgv);
7464 PL_incgv = gv_dup(proto_perl->Iincgv);
7465 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7466 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7467 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7468 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7471 PL_minus_c = proto_perl->Iminus_c;
7472 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7473 PL_localpatches = proto_perl->Ilocalpatches;
7474 PL_splitstr = proto_perl->Isplitstr;
7475 PL_preprocess = proto_perl->Ipreprocess;
7476 PL_minus_n = proto_perl->Iminus_n;
7477 PL_minus_p = proto_perl->Iminus_p;
7478 PL_minus_l = proto_perl->Iminus_l;
7479 PL_minus_a = proto_perl->Iminus_a;
7480 PL_minus_F = proto_perl->Iminus_F;
7481 PL_doswitches = proto_perl->Idoswitches;
7482 PL_dowarn = proto_perl->Idowarn;
7483 PL_doextract = proto_perl->Idoextract;
7484 PL_sawampersand = proto_perl->Isawampersand;
7485 PL_unsafe = proto_perl->Iunsafe;
7486 PL_inplace = SAVEPV(proto_perl->Iinplace);
7487 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7488 PL_perldb = proto_perl->Iperldb;
7489 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7491 /* magical thingies */
7492 /* XXX time(&PL_basetime) when asked for? */
7493 PL_basetime = proto_perl->Ibasetime;
7494 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7496 PL_maxsysfd = proto_perl->Imaxsysfd;
7497 PL_multiline = proto_perl->Imultiline;
7498 PL_statusvalue = proto_perl->Istatusvalue;
7500 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7503 /* shortcuts to various I/O objects */
7504 PL_stdingv = gv_dup(proto_perl->Istdingv);
7505 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7506 PL_defgv = gv_dup(proto_perl->Idefgv);
7507 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7508 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7509 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7511 /* shortcuts to regexp stuff */
7512 PL_replgv = gv_dup(proto_perl->Ireplgv);
7514 /* shortcuts to misc objects */
7515 PL_errgv = gv_dup(proto_perl->Ierrgv);
7517 /* shortcuts to debugging objects */
7518 PL_DBgv = gv_dup(proto_perl->IDBgv);
7519 PL_DBline = gv_dup(proto_perl->IDBline);
7520 PL_DBsub = gv_dup(proto_perl->IDBsub);
7521 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7522 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7523 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7524 PL_lineary = av_dup(proto_perl->Ilineary);
7525 PL_dbargs = av_dup(proto_perl->Idbargs);
7528 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7529 PL_curstash = hv_dup(proto_perl->Tcurstash);
7530 PL_debstash = hv_dup(proto_perl->Idebstash);
7531 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7532 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7534 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7535 PL_endav = av_dup_inc(proto_perl->Iendav);
7536 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7537 PL_initav = av_dup_inc(proto_perl->Iinitav);
7539 PL_sub_generation = proto_perl->Isub_generation;
7541 /* funky return mechanisms */
7542 PL_forkprocess = proto_perl->Iforkprocess;
7544 /* subprocess state */
7545 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7547 /* internal state */
7548 PL_tainting = proto_perl->Itainting;
7549 PL_maxo = proto_perl->Imaxo;
7550 if (proto_perl->Iop_mask)
7551 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7553 PL_op_mask = Nullch;
7555 /* current interpreter roots */
7556 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7557 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7558 PL_main_start = proto_perl->Imain_start;
7559 PL_eval_root = OpREFCNT_inc(proto_perl->Ieval_root);
7560 PL_eval_start = proto_perl->Ieval_start;
7562 /* runtime control stuff */
7563 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7564 PL_copline = proto_perl->Icopline;
7566 PL_filemode = proto_perl->Ifilemode;
7567 PL_lastfd = proto_perl->Ilastfd;
7568 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7571 PL_gensym = proto_perl->Igensym;
7572 PL_preambled = proto_perl->Ipreambled;
7573 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7574 PL_laststatval = proto_perl->Ilaststatval;
7575 PL_laststype = proto_perl->Ilaststype;
7576 PL_mess_sv = Nullsv;
7578 PL_orslen = proto_perl->Iorslen;
7579 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7580 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7582 /* interpreter atexit processing */
7583 PL_exitlistlen = proto_perl->Iexitlistlen;
7584 if (PL_exitlistlen) {
7585 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7586 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7589 PL_exitlist = (PerlExitListEntry*)NULL;
7590 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7592 PL_profiledata = NULL;
7593 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7594 /* PL_rsfp_filters entries have fake IoDIRP() */
7595 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7597 PL_compcv = cv_dup(proto_perl->Icompcv);
7598 PL_comppad = av_dup(proto_perl->Icomppad);
7599 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7600 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7601 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7602 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7603 proto_perl->Tcurpad);
7605 #ifdef HAVE_INTERP_INTERN
7606 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7609 /* more statics moved here */
7610 PL_generation = proto_perl->Igeneration;
7611 PL_DBcv = cv_dup(proto_perl->IDBcv);
7613 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7614 PL_in_clean_all = proto_perl->Iin_clean_all;
7616 PL_uid = proto_perl->Iuid;
7617 PL_euid = proto_perl->Ieuid;
7618 PL_gid = proto_perl->Igid;
7619 PL_egid = proto_perl->Iegid;
7620 PL_nomemok = proto_perl->Inomemok;
7621 PL_an = proto_perl->Ian;
7622 PL_cop_seqmax = proto_perl->Icop_seqmax;
7623 PL_op_seqmax = proto_perl->Iop_seqmax;
7624 PL_evalseq = proto_perl->Ievalseq;
7625 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7626 PL_origalen = proto_perl->Iorigalen;
7627 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7628 PL_osname = SAVEPV(proto_perl->Iosname);
7629 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7630 PL_sighandlerp = proto_perl->Isighandlerp;
7633 PL_runops = proto_perl->Irunops;
7635 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7638 PL_cshlen = proto_perl->Icshlen;
7639 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7642 PL_lex_state = proto_perl->Ilex_state;
7643 PL_lex_defer = proto_perl->Ilex_defer;
7644 PL_lex_expect = proto_perl->Ilex_expect;
7645 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7646 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7647 PL_lex_starts = proto_perl->Ilex_starts;
7648 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7649 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7650 PL_lex_op = proto_perl->Ilex_op;
7651 PL_lex_inpat = proto_perl->Ilex_inpat;
7652 PL_lex_inwhat = proto_perl->Ilex_inwhat;
7653 PL_lex_brackets = proto_perl->Ilex_brackets;
7654 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
7655 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
7656 PL_lex_casemods = proto_perl->Ilex_casemods;
7657 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
7658 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
7660 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
7661 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
7662 PL_nexttoke = proto_perl->Inexttoke;
7664 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
7665 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
7666 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7667 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
7668 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7669 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
7670 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7671 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
7672 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
7673 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7674 PL_pending_ident = proto_perl->Ipending_ident;
7675 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
7677 PL_expect = proto_perl->Iexpect;
7679 PL_multi_start = proto_perl->Imulti_start;
7680 PL_multi_end = proto_perl->Imulti_end;
7681 PL_multi_open = proto_perl->Imulti_open;
7682 PL_multi_close = proto_perl->Imulti_close;
7684 PL_error_count = proto_perl->Ierror_count;
7685 PL_subline = proto_perl->Isubline;
7686 PL_subname = sv_dup_inc(proto_perl->Isubname);
7688 PL_min_intro_pending = proto_perl->Imin_intro_pending;
7689 PL_max_intro_pending = proto_perl->Imax_intro_pending;
7690 PL_padix = proto_perl->Ipadix;
7691 PL_padix_floor = proto_perl->Ipadix_floor;
7692 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
7694 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
7695 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7696 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
7697 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7698 PL_last_lop_op = proto_perl->Ilast_lop_op;
7699 PL_in_my = proto_perl->Iin_my;
7700 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
7702 PL_cryptseen = proto_perl->Icryptseen;
7705 PL_hints = proto_perl->Ihints;
7707 PL_amagic_generation = proto_perl->Iamagic_generation;
7709 #ifdef USE_LOCALE_COLLATE
7710 PL_collation_ix = proto_perl->Icollation_ix;
7711 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
7712 PL_collation_standard = proto_perl->Icollation_standard;
7713 PL_collxfrm_base = proto_perl->Icollxfrm_base;
7714 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
7715 #endif /* USE_LOCALE_COLLATE */
7717 #ifdef USE_LOCALE_NUMERIC
7718 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
7719 PL_numeric_standard = proto_perl->Inumeric_standard;
7720 PL_numeric_local = proto_perl->Inumeric_local;
7721 PL_numeric_radix = proto_perl->Inumeric_radix;
7722 #endif /* !USE_LOCALE_NUMERIC */
7724 /* utf8 character classes */
7725 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
7726 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
7727 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
7728 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
7729 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
7730 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
7731 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
7732 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
7733 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
7734 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
7735 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
7736 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
7737 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
7738 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
7739 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
7740 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
7741 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
7744 PL_last_swash_hv = Nullhv; /* reinits on demand */
7745 PL_last_swash_klen = 0;
7746 PL_last_swash_key[0]= '\0';
7747 PL_last_swash_tmps = (U8*)NULL;
7748 PL_last_swash_slen = 0;
7750 /* perly.c globals */
7751 PL_yydebug = proto_perl->Iyydebug;
7752 PL_yynerrs = proto_perl->Iyynerrs;
7753 PL_yyerrflag = proto_perl->Iyyerrflag;
7754 PL_yychar = proto_perl->Iyychar;
7755 PL_yyval = proto_perl->Iyyval;
7756 PL_yylval = proto_perl->Iyylval;
7758 PL_glob_index = proto_perl->Iglob_index;
7759 PL_srand_called = proto_perl->Isrand_called;
7760 PL_uudmap['M'] = 0; /* reinits on demand */
7761 PL_bitcount = Nullch; /* reinits on demand */
7763 if (proto_perl->Ipsig_ptr) {
7764 int sig_num[] = { SIG_NUM };
7765 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
7766 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
7767 for (i = 1; PL_sig_name[i]; i++) {
7768 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
7769 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
7773 PL_psig_ptr = (SV**)NULL;
7774 PL_psig_name = (SV**)NULL;
7777 /* thrdvar.h stuff */
7780 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
7781 PL_tmps_ix = proto_perl->Ttmps_ix;
7782 PL_tmps_max = proto_perl->Ttmps_max;
7783 PL_tmps_floor = proto_perl->Ttmps_floor;
7784 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
7786 while (i <= PL_tmps_ix) {
7787 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
7791 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
7792 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
7793 Newz(54, PL_markstack, i, I32);
7794 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
7795 - proto_perl->Tmarkstack);
7796 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
7797 - proto_perl->Tmarkstack);
7798 Copy(proto_perl->Tmarkstack, PL_markstack,
7799 PL_markstack_ptr - PL_markstack + 1, I32);
7801 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
7802 * NOTE: unlike the others! */
7803 PL_scopestack_ix = proto_perl->Tscopestack_ix;
7804 PL_scopestack_max = proto_perl->Tscopestack_max;
7805 Newz(54, PL_scopestack, PL_scopestack_max, I32);
7806 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
7808 /* next push_return() sets PL_retstack[PL_retstack_ix]
7809 * NOTE: unlike the others! */
7810 PL_retstack_ix = proto_perl->Tretstack_ix;
7811 PL_retstack_max = proto_perl->Tretstack_max;
7812 Newz(54, PL_retstack, PL_retstack_max, OP*);
7813 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
7815 /* NOTE: si_dup() looks at PL_markstack */
7816 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
7818 /* PL_curstack = PL_curstackinfo->si_stack; */
7819 PL_curstack = av_dup(proto_perl->Tcurstack);
7820 PL_mainstack = av_dup(proto_perl->Tmainstack);
7822 /* next PUSHs() etc. set *(PL_stack_sp+1) */
7823 PL_stack_base = AvARRAY(PL_curstack);
7824 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
7825 - proto_perl->Tstack_base);
7826 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
7828 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
7829 * NOTE: unlike the others! */
7830 PL_savestack_ix = proto_perl->Tsavestack_ix;
7831 PL_savestack_max = proto_perl->Tsavestack_max;
7832 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
7833 PL_savestack = ss_dup(proto_perl);
7839 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
7840 PL_top_env = &PL_start_env;
7842 PL_op = proto_perl->Top;
7845 PL_Xpv = (XPV*)NULL;
7846 PL_na = proto_perl->Tna;
7848 PL_statbuf = proto_perl->Tstatbuf;
7849 PL_statcache = proto_perl->Tstatcache;
7850 PL_statgv = gv_dup(proto_perl->Tstatgv);
7851 PL_statname = sv_dup_inc(proto_perl->Tstatname);
7853 PL_timesbuf = proto_perl->Ttimesbuf;
7856 PL_tainted = proto_perl->Ttainted;
7857 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
7858 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
7859 PL_rs = sv_dup_inc(proto_perl->Trs);
7860 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
7861 PL_ofslen = proto_perl->Tofslen;
7862 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
7863 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
7864 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
7865 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
7866 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
7867 PL_formtarget = sv_dup(proto_perl->Tformtarget);
7869 PL_restartop = proto_perl->Trestartop;
7870 PL_in_eval = proto_perl->Tin_eval;
7871 PL_delaymagic = proto_perl->Tdelaymagic;
7872 PL_dirty = proto_perl->Tdirty;
7873 PL_localizing = proto_perl->Tlocalizing;
7875 #ifdef PERL_FLEXIBLE_EXCEPTIONS
7876 PL_protect = proto_perl->Tprotect;
7878 PL_errors = sv_dup_inc(proto_perl->Terrors);
7879 PL_av_fetch_sv = Nullsv;
7880 PL_hv_fetch_sv = Nullsv;
7881 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
7882 PL_modcount = proto_perl->Tmodcount;
7883 PL_lastgotoprobe = Nullop;
7884 PL_dumpindent = proto_perl->Tdumpindent;
7886 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
7887 PL_sortstash = hv_dup(proto_perl->Tsortstash);
7888 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
7889 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
7890 PL_sortcxix = proto_perl->Tsortcxix;
7891 PL_efloatbuf = Nullch; /* reinits on demand */
7892 PL_efloatsize = 0; /* reinits on demand */
7896 PL_screamfirst = NULL;
7897 PL_screamnext = NULL;
7898 PL_maxscream = -1; /* reinits on demand */
7899 PL_lastscream = Nullsv;
7901 PL_watchaddr = NULL;
7902 PL_watchok = Nullch;
7904 PL_regdummy = proto_perl->Tregdummy;
7905 PL_regcomp_parse = Nullch;
7906 PL_regxend = Nullch;
7907 PL_regcode = (regnode*)NULL;
7910 PL_regprecomp = Nullch;
7915 PL_seen_zerolen = 0;
7917 PL_regcomp_rx = (regexp*)NULL;
7919 PL_colorset = 0; /* reinits PL_colors[] */
7920 /*PL_colors[6] = {0,0,0,0,0,0};*/
7921 PL_reg_whilem_seen = 0;
7922 PL_reginput = Nullch;
7925 PL_regstartp = (I32*)NULL;
7926 PL_regendp = (I32*)NULL;
7927 PL_reglastparen = (U32*)NULL;
7928 PL_regtill = Nullch;
7930 PL_reg_start_tmp = (char**)NULL;
7931 PL_reg_start_tmpl = 0;
7932 PL_regdata = (struct reg_data*)NULL;
7935 PL_reg_eval_set = 0;
7937 PL_regprogram = (regnode*)NULL;
7939 PL_regcc = (CURCUR*)NULL;
7940 PL_reg_call_cc = (struct re_cc_state*)NULL;
7941 PL_reg_re = (regexp*)NULL;
7942 PL_reg_ganch = Nullch;
7944 PL_reg_magic = (MAGIC*)NULL;
7946 PL_reg_oldcurpm = (PMOP*)NULL;
7947 PL_reg_curpm = (PMOP*)NULL;
7948 PL_reg_oldsaved = Nullch;
7949 PL_reg_oldsavedlen = 0;
7951 PL_reg_leftiter = 0;
7952 PL_reg_poscache = Nullch;
7953 PL_reg_poscache_size= 0;
7955 /* RE engine - function pointers */
7956 PL_regcompp = proto_perl->Tregcompp;
7957 PL_regexecp = proto_perl->Tregexecp;
7958 PL_regint_start = proto_perl->Tregint_start;
7959 PL_regint_string = proto_perl->Tregint_string;
7960 PL_regfree = proto_perl->Tregfree;
7962 PL_reginterp_cnt = 0;
7963 PL_reg_starttry = 0;
7966 return (PerlInterpreter*)pPerl;
7972 #else /* !USE_ITHREADS */
7978 #endif /* USE_ITHREADS */
7981 do_report_used(pTHXo_ SV *sv)
7983 if (SvTYPE(sv) != SVTYPEMASK) {
7984 PerlIO_printf(Perl_debug_log, "****\n");
7990 do_clean_objs(pTHXo_ SV *sv)
7994 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
7995 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8001 /* XXX Might want to check arrays, etc. */
8004 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8006 do_clean_named_objs(pTHXo_ SV *sv)
8008 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8009 if ( SvOBJECT(GvSV(sv)) ||
8010 GvAV(sv) && SvOBJECT(GvAV(sv)) ||
8011 GvHV(sv) && SvOBJECT(GvHV(sv)) ||
8012 GvIO(sv) && SvOBJECT(GvIO(sv)) ||
8013 GvCV(sv) && SvOBJECT(GvCV(sv)) )
8015 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8023 do_clean_all(pTHXo_ SV *sv)
8025 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8026 SvFLAGS(sv) |= SVf_BREAK;