3 * Copyright (c) 1991-2001, 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); \
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)
158 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
159 svend = &sva[SvREFCNT(sva)];
160 for (sv = sva + 1; sv < svend; ++sv) {
161 if (SvTYPE(sv) != SVTYPEMASK && SvREFCNT(sv)) {
171 Perl_sv_report_used(pTHX)
173 visit(do_report_used);
177 Perl_sv_clean_objs(pTHX)
179 PL_in_clean_objs = TRUE;
180 visit(do_clean_objs);
181 #ifndef DISABLE_DESTRUCTOR_KLUDGE
182 /* some barnacles may yet remain, clinging to typeglobs */
183 visit(do_clean_named_objs);
185 PL_in_clean_objs = FALSE;
189 Perl_sv_clean_all(pTHX)
192 PL_in_clean_all = TRUE;
193 cleaned = visit(do_clean_all);
194 PL_in_clean_all = FALSE;
199 Perl_sv_free_arenas(pTHX)
203 XPV *arena, *arenanext;
205 /* Free arenas here, but be careful about fake ones. (We assume
206 contiguity of the fake ones with the corresponding real ones.) */
208 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
209 svanext = (SV*) SvANY(sva);
210 while (svanext && SvFAKE(svanext))
211 svanext = (SV*) SvANY(svanext);
214 Safefree((void *)sva);
217 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
221 PL_xiv_arenaroot = 0;
223 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
227 PL_xnv_arenaroot = 0;
229 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
233 PL_xrv_arenaroot = 0;
235 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
239 PL_xpv_arenaroot = 0;
241 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
245 PL_xpviv_arenaroot = 0;
247 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
251 PL_xpvnv_arenaroot = 0;
253 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
257 PL_xpvcv_arenaroot = 0;
259 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
263 PL_xpvav_arenaroot = 0;
265 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
269 PL_xpvhv_arenaroot = 0;
271 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
275 PL_xpvmg_arenaroot = 0;
277 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
281 PL_xpvlv_arenaroot = 0;
283 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
287 PL_xpvbm_arenaroot = 0;
289 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
290 arenanext = (XPV*)arena->xpv_pv;
296 Safefree(PL_nice_chunk);
297 PL_nice_chunk = Nullch;
298 PL_nice_chunk_size = 0;
304 Perl_report_uninit(pTHX)
307 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
308 " in ", PL_op_desc[PL_op->op_type]);
310 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
322 * See comment in more_xiv() -- RAM.
324 PL_xiv_root = *(IV**)xiv;
326 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
330 S_del_xiv(pTHX_ XPVIV *p)
332 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
334 *(IV**)xiv = PL_xiv_root;
345 New(705, ptr, 1008/sizeof(XPV), XPV);
346 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
347 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
350 xivend = &xiv[1008 / sizeof(IV) - 1];
351 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
353 while (xiv < xivend) {
354 *(IV**)xiv = (IV *)(xiv + 1);
368 PL_xnv_root = *(NV**)xnv;
370 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
374 S_del_xnv(pTHX_ XPVNV *p)
376 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
378 *(NV**)xnv = PL_xnv_root;
389 New(711, ptr, 1008/sizeof(XPV), XPV);
390 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
391 PL_xnv_arenaroot = ptr;
394 xnvend = &xnv[1008 / sizeof(NV) - 1];
395 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
397 while (xnv < xnvend) {
398 *(NV**)xnv = (NV*)(xnv + 1);
412 PL_xrv_root = (XRV*)xrv->xrv_rv;
418 S_del_xrv(pTHX_ XRV *p)
421 p->xrv_rv = (SV*)PL_xrv_root;
430 register XRV* xrvend;
432 New(712, ptr, 1008/sizeof(XPV), XPV);
433 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
434 PL_xrv_arenaroot = ptr;
437 xrvend = &xrv[1008 / sizeof(XRV) - 1];
438 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
440 while (xrv < xrvend) {
441 xrv->xrv_rv = (SV*)(xrv + 1);
455 PL_xpv_root = (XPV*)xpv->xpv_pv;
461 S_del_xpv(pTHX_ XPV *p)
464 p->xpv_pv = (char*)PL_xpv_root;
473 register XPV* xpvend;
474 New(713, xpv, 1008/sizeof(XPV), XPV);
475 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
476 PL_xpv_arenaroot = xpv;
478 xpvend = &xpv[1008 / sizeof(XPV) - 1];
480 while (xpv < xpvend) {
481 xpv->xpv_pv = (char*)(xpv + 1);
494 xpviv = PL_xpviv_root;
495 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
501 S_del_xpviv(pTHX_ XPVIV *p)
504 p->xpv_pv = (char*)PL_xpviv_root;
512 register XPVIV* xpviv;
513 register XPVIV* xpvivend;
514 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
515 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
516 PL_xpviv_arenaroot = xpviv;
518 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
519 PL_xpviv_root = ++xpviv;
520 while (xpviv < xpvivend) {
521 xpviv->xpv_pv = (char*)(xpviv + 1);
534 xpvnv = PL_xpvnv_root;
535 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
541 S_del_xpvnv(pTHX_ XPVNV *p)
544 p->xpv_pv = (char*)PL_xpvnv_root;
552 register XPVNV* xpvnv;
553 register XPVNV* xpvnvend;
554 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
555 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
556 PL_xpvnv_arenaroot = xpvnv;
558 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
559 PL_xpvnv_root = ++xpvnv;
560 while (xpvnv < xpvnvend) {
561 xpvnv->xpv_pv = (char*)(xpvnv + 1);
574 xpvcv = PL_xpvcv_root;
575 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
581 S_del_xpvcv(pTHX_ XPVCV *p)
584 p->xpv_pv = (char*)PL_xpvcv_root;
592 register XPVCV* xpvcv;
593 register XPVCV* xpvcvend;
594 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
595 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
596 PL_xpvcv_arenaroot = xpvcv;
598 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
599 PL_xpvcv_root = ++xpvcv;
600 while (xpvcv < xpvcvend) {
601 xpvcv->xpv_pv = (char*)(xpvcv + 1);
614 xpvav = PL_xpvav_root;
615 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
621 S_del_xpvav(pTHX_ XPVAV *p)
624 p->xav_array = (char*)PL_xpvav_root;
632 register XPVAV* xpvav;
633 register XPVAV* xpvavend;
634 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
635 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
636 PL_xpvav_arenaroot = xpvav;
638 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
639 PL_xpvav_root = ++xpvav;
640 while (xpvav < xpvavend) {
641 xpvav->xav_array = (char*)(xpvav + 1);
644 xpvav->xav_array = 0;
654 xpvhv = PL_xpvhv_root;
655 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
661 S_del_xpvhv(pTHX_ XPVHV *p)
664 p->xhv_array = (char*)PL_xpvhv_root;
672 register XPVHV* xpvhv;
673 register XPVHV* xpvhvend;
674 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
675 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
676 PL_xpvhv_arenaroot = xpvhv;
678 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
679 PL_xpvhv_root = ++xpvhv;
680 while (xpvhv < xpvhvend) {
681 xpvhv->xhv_array = (char*)(xpvhv + 1);
684 xpvhv->xhv_array = 0;
694 xpvmg = PL_xpvmg_root;
695 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
701 S_del_xpvmg(pTHX_ XPVMG *p)
704 p->xpv_pv = (char*)PL_xpvmg_root;
712 register XPVMG* xpvmg;
713 register XPVMG* xpvmgend;
714 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
715 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
716 PL_xpvmg_arenaroot = xpvmg;
718 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
719 PL_xpvmg_root = ++xpvmg;
720 while (xpvmg < xpvmgend) {
721 xpvmg->xpv_pv = (char*)(xpvmg + 1);
734 xpvlv = PL_xpvlv_root;
735 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
741 S_del_xpvlv(pTHX_ XPVLV *p)
744 p->xpv_pv = (char*)PL_xpvlv_root;
752 register XPVLV* xpvlv;
753 register XPVLV* xpvlvend;
754 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
755 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
756 PL_xpvlv_arenaroot = xpvlv;
758 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
759 PL_xpvlv_root = ++xpvlv;
760 while (xpvlv < xpvlvend) {
761 xpvlv->xpv_pv = (char*)(xpvlv + 1);
774 xpvbm = PL_xpvbm_root;
775 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
781 S_del_xpvbm(pTHX_ XPVBM *p)
784 p->xpv_pv = (char*)PL_xpvbm_root;
792 register XPVBM* xpvbm;
793 register XPVBM* xpvbmend;
794 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
795 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
796 PL_xpvbm_arenaroot = xpvbm;
798 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
799 PL_xpvbm_root = ++xpvbm;
800 while (xpvbm < xpvbmend) {
801 xpvbm->xpv_pv = (char*)(xpvbm + 1);
808 # define my_safemalloc(s) (void*)safexmalloc(717,s)
809 # define my_safefree(p) safexfree((char*)p)
811 # define my_safemalloc(s) (void*)safemalloc(s)
812 # define my_safefree(p) safefree((char*)p)
817 #define new_XIV() my_safemalloc(sizeof(XPVIV))
818 #define del_XIV(p) my_safefree(p)
820 #define new_XNV() my_safemalloc(sizeof(XPVNV))
821 #define del_XNV(p) my_safefree(p)
823 #define new_XRV() my_safemalloc(sizeof(XRV))
824 #define del_XRV(p) my_safefree(p)
826 #define new_XPV() my_safemalloc(sizeof(XPV))
827 #define del_XPV(p) my_safefree(p)
829 #define new_XPVIV() my_safemalloc(sizeof(XPVIV))
830 #define del_XPVIV(p) my_safefree(p)
832 #define new_XPVNV() my_safemalloc(sizeof(XPVNV))
833 #define del_XPVNV(p) my_safefree(p)
835 #define new_XPVCV() my_safemalloc(sizeof(XPVCV))
836 #define del_XPVCV(p) my_safefree(p)
838 #define new_XPVAV() my_safemalloc(sizeof(XPVAV))
839 #define del_XPVAV(p) my_safefree(p)
841 #define new_XPVHV() my_safemalloc(sizeof(XPVHV))
842 #define del_XPVHV(p) my_safefree(p)
844 #define new_XPVMG() my_safemalloc(sizeof(XPVMG))
845 #define del_XPVMG(p) my_safefree(p)
847 #define new_XPVLV() my_safemalloc(sizeof(XPVLV))
848 #define del_XPVLV(p) my_safefree(p)
850 #define new_XPVBM() my_safemalloc(sizeof(XPVBM))
851 #define del_XPVBM(p) my_safefree(p)
855 #define new_XIV() (void*)new_xiv()
856 #define del_XIV(p) del_xiv((XPVIV*) p)
858 #define new_XNV() (void*)new_xnv()
859 #define del_XNV(p) del_xnv((XPVNV*) p)
861 #define new_XRV() (void*)new_xrv()
862 #define del_XRV(p) del_xrv((XRV*) p)
864 #define new_XPV() (void*)new_xpv()
865 #define del_XPV(p) del_xpv((XPV *)p)
867 #define new_XPVIV() (void*)new_xpviv()
868 #define del_XPVIV(p) del_xpviv((XPVIV *)p)
870 #define new_XPVNV() (void*)new_xpvnv()
871 #define del_XPVNV(p) del_xpvnv((XPVNV *)p)
873 #define new_XPVCV() (void*)new_xpvcv()
874 #define del_XPVCV(p) del_xpvcv((XPVCV *)p)
876 #define new_XPVAV() (void*)new_xpvav()
877 #define del_XPVAV(p) del_xpvav((XPVAV *)p)
879 #define new_XPVHV() (void*)new_xpvhv()
880 #define del_XPVHV(p) del_xpvhv((XPVHV *)p)
882 #define new_XPVMG() (void*)new_xpvmg()
883 #define del_XPVMG(p) del_xpvmg((XPVMG *)p)
885 #define new_XPVLV() (void*)new_xpvlv()
886 #define del_XPVLV(p) del_xpvlv((XPVLV *)p)
888 #define new_XPVBM() (void*)new_xpvbm()
889 #define del_XPVBM(p) del_xpvbm((XPVBM *)p)
893 #define new_XPVGV() my_safemalloc(sizeof(XPVGV))
894 #define del_XPVGV(p) my_safefree(p)
896 #define new_XPVFM() my_safemalloc(sizeof(XPVFM))
897 #define del_XPVFM(p) my_safefree(p)
899 #define new_XPVIO() my_safemalloc(sizeof(XPVIO))
900 #define del_XPVIO(p) my_safefree(p)
903 =for apidoc sv_upgrade
905 Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
912 Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
922 if (mt != SVt_PV && SvREADONLY(sv) && SvFAKE(sv)) {
926 if (SvTYPE(sv) == mt)
932 switch (SvTYPE(sv)) {
953 else if (mt < SVt_PVIV)
970 pv = (char*)SvRV(sv);
990 else if (mt == SVt_NV)
1001 del_XPVIV(SvANY(sv));
1011 del_XPVNV(SvANY(sv));
1019 magic = SvMAGIC(sv);
1020 stash = SvSTASH(sv);
1021 del_XPVMG(SvANY(sv));
1024 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
1029 Perl_croak(aTHX_ "Can't upgrade to undef");
1031 SvANY(sv) = new_XIV();
1035 SvANY(sv) = new_XNV();
1039 SvANY(sv) = new_XRV();
1043 SvANY(sv) = new_XPV();
1049 SvANY(sv) = new_XPVIV();
1059 SvANY(sv) = new_XPVNV();
1067 SvANY(sv) = new_XPVMG();
1073 SvMAGIC(sv) = magic;
1074 SvSTASH(sv) = stash;
1077 SvANY(sv) = new_XPVLV();
1083 SvMAGIC(sv) = magic;
1084 SvSTASH(sv) = stash;
1091 SvANY(sv) = new_XPVAV();
1099 SvMAGIC(sv) = magic;
1100 SvSTASH(sv) = stash;
1106 SvANY(sv) = new_XPVHV();
1114 SvMAGIC(sv) = magic;
1115 SvSTASH(sv) = stash;
1122 SvANY(sv) = new_XPVCV();
1123 Zero(SvANY(sv), 1, XPVCV);
1129 SvMAGIC(sv) = magic;
1130 SvSTASH(sv) = stash;
1133 SvANY(sv) = new_XPVGV();
1139 SvMAGIC(sv) = magic;
1140 SvSTASH(sv) = stash;
1148 SvANY(sv) = new_XPVBM();
1154 SvMAGIC(sv) = magic;
1155 SvSTASH(sv) = stash;
1161 SvANY(sv) = new_XPVFM();
1162 Zero(SvANY(sv), 1, XPVFM);
1168 SvMAGIC(sv) = magic;
1169 SvSTASH(sv) = stash;
1172 SvANY(sv) = new_XPVIO();
1173 Zero(SvANY(sv), 1, XPVIO);
1179 SvMAGIC(sv) = magic;
1180 SvSTASH(sv) = stash;
1181 IoPAGE_LEN(sv) = 60;
1184 SvFLAGS(sv) &= ~SVTYPEMASK;
1190 Perl_sv_backoff(pTHX_ register SV *sv)
1194 char *s = SvPVX(sv);
1195 SvLEN(sv) += SvIVX(sv);
1196 SvPVX(sv) -= SvIVX(sv);
1198 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1200 SvFLAGS(sv) &= ~SVf_OOK;
1207 Expands the character buffer in the SV. This will use C<sv_unref> and will
1208 upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1215 Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
1219 #ifdef HAS_64K_LIMIT
1220 if (newlen >= 0x10000) {
1221 PerlIO_printf(Perl_debug_log,
1222 "Allocation too large: %"UVxf"\n", (UV)newlen);
1225 #endif /* HAS_64K_LIMIT */
1228 if (SvTYPE(sv) < SVt_PV) {
1229 sv_upgrade(sv, SVt_PV);
1232 else if (SvOOK(sv)) { /* pv is offset? */
1235 if (newlen > SvLEN(sv))
1236 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1237 #ifdef HAS_64K_LIMIT
1238 if (newlen >= 0x10000)
1244 if (newlen > SvLEN(sv)) { /* need more room? */
1245 if (SvLEN(sv) && s) {
1246 #if defined(MYMALLOC) && !defined(LEAKTEST)
1247 STRLEN l = malloced_size((void*)SvPVX(sv));
1253 Renew(s,newlen,char);
1256 New(703,s,newlen,char);
1258 SvLEN_set(sv, newlen);
1264 =for apidoc sv_setiv
1266 Copies an integer into the given SV. Does not handle 'set' magic. See
1273 Perl_sv_setiv(pTHX_ register SV *sv, IV i)
1275 SV_CHECK_THINKFIRST(sv);
1276 switch (SvTYPE(sv)) {
1278 sv_upgrade(sv, SVt_IV);
1281 sv_upgrade(sv, SVt_PVNV);
1285 sv_upgrade(sv, SVt_PVIV);
1294 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1295 PL_op_desc[PL_op->op_type]);
1297 (void)SvIOK_only(sv); /* validate number */
1303 =for apidoc sv_setiv_mg
1305 Like C<sv_setiv>, but also handles 'set' magic.
1311 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1318 =for apidoc sv_setuv
1320 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1327 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
1329 /* With these two if statements:
1330 u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865
1333 u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865
1335 If you wish to remove them, please benchmark to see what the effect is
1337 if (u <= (UV)IV_MAX) {
1338 sv_setiv(sv, (IV)u);
1347 =for apidoc sv_setuv_mg
1349 Like C<sv_setuv>, but also handles 'set' magic.
1355 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1357 /* With these two if statements:
1358 u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865
1361 u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865
1363 If you wish to remove them, please benchmark to see what the effect is
1365 if (u <= (UV)IV_MAX) {
1366 sv_setiv(sv, (IV)u);
1376 =for apidoc sv_setnv
1378 Copies a double into the given SV. Does not handle 'set' magic. See
1385 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1387 SV_CHECK_THINKFIRST(sv);
1388 switch (SvTYPE(sv)) {
1391 sv_upgrade(sv, SVt_NV);
1396 sv_upgrade(sv, SVt_PVNV);
1405 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1406 PL_op_name[PL_op->op_type]);
1409 (void)SvNOK_only(sv); /* validate number */
1414 =for apidoc sv_setnv_mg
1416 Like C<sv_setnv>, but also handles 'set' magic.
1422 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1429 S_not_a_number(pTHX_ SV *sv)
1434 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1435 /* each *s can expand to 4 chars + "...\0",
1436 i.e. need room for 8 chars */
1438 for (s = SvPVX(sv); *s && d < limit; s++) {
1440 if (ch & 128 && !isPRINT_LC(ch)) {
1449 else if (ch == '\r') {
1453 else if (ch == '\f') {
1457 else if (ch == '\\') {
1461 else if (isPRINT_LC(ch))
1476 Perl_warner(aTHX_ WARN_NUMERIC,
1477 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1478 PL_op_desc[PL_op->op_type]);
1480 Perl_warner(aTHX_ WARN_NUMERIC,
1481 "Argument \"%s\" isn't numeric", tmpbuf);
1484 /* the number can be converted to integer with atol() or atoll() although */
1485 #define IS_NUMBER_TO_INT_BY_ATOL 0x01 /* integer (may have decimals) */
1486 #define IS_NUMBER_TO_INT_BY_STRTOL 0x02 /* it may exceed IV_MAX */
1487 #define IS_NUMBER_TO_INT_BY_ATOF 0x04 /* seen something like 123e4 */
1488 #define IS_NUMBER_LONGER_THAN_IV_MAX 0x08 /* more digits than IV_MAX */
1489 #define IS_NUMBER_AS_LONG_AS_IV_MAX 0x10 /* may(be not) larger than IV_MAX */
1490 #define IS_NUMBER_NOT_INT 0x20 /* seen a decimal point or e */
1491 #define IS_NUMBER_NEG 0x40 /* seen a leading - */
1492 #define IS_NUMBER_INFINITY 0x80 /* /^\s*-?Infinity\s*$/i */
1494 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1495 until proven guilty, assume that things are not that bad... */
1497 /* As 64 bit platforms often have an NV that doesn't preserve all bits of
1498 an IV (an assumption perl has been based on to date) it becomes necessary
1499 to remove the assumption that the NV always carries enough precision to
1500 recreate the IV whenever needed, and that the NV is the canonical form.
1501 Instead, IV/UV and NV need to be given equal rights. So as to not lose
1502 precision as an side effect of conversion (which would lead to insanity
1503 and the dragon(s) in t/op/numconvert.t getting very angry) the intent is
1504 1) to distinguish between IV/UV/NV slots that have cached a valid
1505 conversion where precision was lost and IV/UV/NV slots that have a
1506 valid conversion which has lost no precision
1507 2) to ensure that if a numeric conversion to one form is request that
1508 would lose precision, the precise conversion (or differently
1509 imprecise conversion) is also performed and cached, to prevent
1510 requests for different numeric formats on the same SV causing
1511 lossy conversion chains. (lossless conversion chains are perfectly
1516 SvIOKp is true if the IV slot contains a valid value
1517 SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true)
1518 SvNOKp is true if the NV slot contains a valid value
1519 SvNOK is true only if the NV value is accurate
1522 while converting from PV to NV check to see if converting that NV to an
1523 IV(or UV) would lose accuracy over a direct conversion from PV to
1524 IV(or UV). If it would, cache both conversions, return NV, but mark
1525 SV as IOK NOKp (ie not NOK).
1527 while converting from PV to IV check to see if converting that IV to an
1528 NV would lose accuracy over a direct conversion from PV to NV. If it
1529 would, cache both conversions, flag similarly.
1531 Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite
1532 correctly because if IV & NV were set NV *always* overruled.
1533 Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flags meaning
1534 changes - now IV and NV together means that the two are interchangeable
1535 SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX;
1537 The benefit of this is operations such as pp_add know that if SvIOK is
1538 true for both left and right operands, then integer addition can be
1539 used instead of floating point. (for cases where the result won't
1540 overflow) Before, floating point was always used, which could lead to
1541 loss of precision compared with integer addition.
1543 * making IV and NV equal status should make maths accurate on 64 bit
1545 * may speed up maths somewhat if pp_add and friends start to use
1546 integers when possible instead of fp. (hopefully the overhead in
1547 looking for SvIOK and checking for overflow will not outweigh the
1548 fp to integer speedup)
1549 * will slow down integer operations (callers of SvIV) on "inaccurate"
1550 values, as the change from SvIOK to SvIOKp will cause a call into
1551 sv_2iv each time rather than a macro access direct to the IV slot
1552 * should speed up number->string conversion on integers as IV is
1553 favoured when IV and NV equally accurate
1555 ####################################################################
1556 You had better be using SvIOK_notUV if you want an IV for arithmetic
1557 SvIOK is true if (IV or UV), so you might be getting (IV)SvUV
1558 SvUOK is true iff UV.
1559 ####################################################################
1561 Your mileage will vary depending your CPUs relative fp to integer
1565 #ifndef NV_PRESERVES_UV
1566 #define IS_NUMBER_UNDERFLOW_IV 1
1567 #define IS_NUMBER_UNDERFLOW_UV 2
1568 #define IS_NUMBER_IV_AND_UV 2
1569 #define IS_NUMBER_OVERFLOW_IV 4
1570 #define IS_NUMBER_OVERFLOW_UV 5
1571 /* Hopefully your optimiser will consider inlining these two functions. */
1573 S_sv_2inuv_non_preserve (pTHX_ register SV *sv, I32 numtype) {
1574 NV nv = SvNVX(sv); /* Code simpler and had compiler problems if */
1575 UV nv_as_uv = U_V(nv); /* these are not in simple variables. */
1576 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2inuv_non '%s', IV=0x%"UVxf" NV=%g inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), nv, (UV)numtype));
1577 if (nv_as_uv <= (UV)IV_MAX) {
1578 (void)SvIOKp_on(sv);
1579 (void)SvNOKp_on(sv);
1580 /* Within suitable range to fit in an IV, atol won't overflow */
1581 /* XXX quite sure? Is that your final answer? not really, I'm
1582 trusting that nv_as_uv to round down if NV is (IV_MAX + 1) */
1583 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1584 if (numtype & IS_NUMBER_NOT_INT) {
1585 /* I believe that even if the original PV had decimals, they
1586 are lost beyond the limit of the FP precision.
1587 However, neither is canonical, so both only get p flags.
1589 /* Both already have p flags, so do nothing */
1590 } else if (SvIVX(sv) == I_V(nv)) {
1595 /* It had no "." so it must be integer. assert (get in here from
1596 sv_2iv and sv_2uv only for ndef HAS_STRTOL and
1597 IS_NUMBER_AS_LONG_AS_IV_MAX) or my logic is faulty and all
1598 conversion routines need audit. */
1600 return nv < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV;
1602 /* between IV_MAX and NV(UV_MAX). Could be slightly> UV_MAX */
1603 (void)SvIOKp_on(sv);
1604 (void)SvNOKp_on(sv);
1607 int save_errno = errno;
1609 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1611 if (numtype & IS_NUMBER_NOT_INT) {
1612 /* UV and NV both imprecise. */
1614 } else if (SvUVX(sv) == nv_as_uv && SvUVX(sv) != UV_MAX) {
1623 return IS_NUMBER_OVERFLOW_IV;
1627 /* Must have just overflowed UV, but not enough that an NV could spot
1629 return IS_NUMBER_OVERFLOW_UV;
1632 /* We've just lost integer precision, nothing we could do. */
1633 SvUVX(sv) = nv_as_uv;
1634 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2niuv_non UV? '%s', UV=0x%"UVxf" NV=%g U_V(NV)=0x%"UVxf" inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), nv, nv_as_uv, (UV)numtype));
1635 /* UV and NV slots equally valid only if we have casting symmetry. */
1636 if (numtype & IS_NUMBER_NOT_INT) {
1638 } else if (SvUVX(sv) == nv_as_uv && SvUVX(sv) != UV_MAX) {
1639 /* UV_MAX can cast up to NV (UV_MAX+1), that NV casts down to UV_MAX
1640 UV_MAX ought to be 0xFF...FFF which won't preserve (We only
1641 get to this point if NVs don't preserve UVs) */
1646 /* As above, I believe UV at least as good as NV */
1649 #endif /* HAS_STRTOUL */
1650 return IS_NUMBER_OVERFLOW_IV;
1653 /* For sv_2nv these three cases are "SvNOK and don't bother casting" */
1655 S_sv_2iuv_non_preserve (pTHX_ register SV *sv, I32 numtype)
1657 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2iuv_non '%s', IV=0x%"UVxf" NV=%g inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), SvNVX(sv), (UV)numtype));
1658 if (SvNVX(sv) < (NV)IV_MIN) {
1659 (void)SvIOKp_on(sv);
1662 return IS_NUMBER_UNDERFLOW_IV;
1664 if (SvNVX(sv) > (NV)UV_MAX) {
1665 (void)SvIOKp_on(sv);
1669 return IS_NUMBER_OVERFLOW_UV;
1671 if (!(numtype & (IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_TO_INT_BY_STRTOL))) {
1672 (void)SvIOKp_on(sv);
1674 /* Can't use strtol etc to convert this string */
1675 if (SvNVX(sv) <= (UV)IV_MAX) {
1676 SvIVX(sv) = I_V(SvNVX(sv));
1677 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
1678 SvIOK_on(sv); /* Integer is precise. NOK, IOK */
1680 /* Integer is imprecise. NOK, IOKp */
1682 return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV;
1685 SvUVX(sv) = U_V(SvNVX(sv));
1686 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
1687 if (SvUVX(sv) == UV_MAX) {
1688 /* As we know that NVs don't preserve UVs, UV_MAX cannot
1689 possibly be preserved by NV. Hence, it must be overflow.
1691 return IS_NUMBER_OVERFLOW_UV;
1693 SvIOK_on(sv); /* Integer is precise. NOK, UOK */
1695 /* Integer is imprecise. NOK, IOKp */
1697 return IS_NUMBER_OVERFLOW_IV;
1699 return S_sv_2inuv_non_preserve(aTHX_ sv, numtype);
1701 #endif /* NV_PRESERVES_UV*/
1704 Perl_sv_2iv(pTHX_ register SV *sv)
1708 if (SvGMAGICAL(sv)) {
1713 return I_V(SvNVX(sv));
1715 if (SvPOKp(sv) && SvLEN(sv))
1718 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1719 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1725 if (SvTHINKFIRST(sv)) {
1728 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1729 (SvRV(tmpstr) != SvRV(sv)))
1730 return SvIV(tmpstr);
1731 return PTR2IV(SvRV(sv));
1733 if (SvREADONLY(sv) && SvFAKE(sv)) {
1734 sv_force_normal(sv);
1736 if (SvREADONLY(sv) && !SvOK(sv)) {
1737 if (ckWARN(WARN_UNINITIALIZED))
1744 return (IV)(SvUVX(sv));
1751 /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv
1752 * without also getting a cached IV/UV from it at the same time
1753 * (ie PV->NV conversion should detect loss of accuracy and cache
1754 * IV or UV at same time to avoid this. NWC */
1756 if (SvTYPE(sv) == SVt_NV)
1757 sv_upgrade(sv, SVt_PVNV);
1759 (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */
1760 /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost
1761 certainly cast into the IV range at IV_MAX, whereas the correct
1762 answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary
1764 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
1765 SvIVX(sv) = I_V(SvNVX(sv));
1766 if (SvNVX(sv) == (NV) SvIVX(sv)
1767 #ifndef NV_PRESERVES_UV
1768 && (((UV)1 << NV_PRESERVES_UV_BITS) >
1769 (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv)))
1770 /* Don't flag it as "accurately an integer" if the number
1771 came from a (by definition imprecise) NV operation, and
1772 we're outside the range of NV integer precision */
1775 SvIOK_on(sv); /* Can this go wrong with rounding? NWC */
1776 DEBUG_c(PerlIO_printf(Perl_debug_log,
1777 "0x%"UVxf" iv(%g => %"IVdf") (precise)\n",
1783 /* IV not precise. No need to convert from PV, as NV
1784 conversion would already have cached IV if it detected
1785 that PV->IV would be better than PV->NV->IV
1786 flags already correct - don't set public IOK. */
1787 DEBUG_c(PerlIO_printf(Perl_debug_log,
1788 "0x%"UVxf" iv(%g => %"IVdf") (imprecise)\n",
1793 /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN,
1794 but the cast (NV)IV_MIN rounds to a the value less (more
1795 negative) than IV_MIN which happens to be equal to SvNVX ??
1796 Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and
1797 NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and
1798 (NV)UVX == NVX are both true, but the values differ. :-(
1799 Hopefully for 2s complement IV_MIN is something like
1800 0x8000000000000000 which will be exact. NWC */
1803 SvUVX(sv) = U_V(SvNVX(sv));
1805 (SvNVX(sv) == (NV) SvUVX(sv))
1806 #ifndef NV_PRESERVES_UV
1807 /* Make sure it's not 0xFFFFFFFFFFFFFFFF */
1808 /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */
1809 && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv))
1810 /* Don't flag it as "accurately an integer" if the number
1811 came from a (by definition imprecise) NV operation, and
1812 we're outside the range of NV integer precision */
1818 DEBUG_c(PerlIO_printf(Perl_debug_log,
1819 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1823 return (IV)SvUVX(sv);
1826 else if (SvPOKp(sv) && SvLEN(sv)) {
1827 I32 numtype = looks_like_number(sv);
1829 /* We want to avoid a possible problem when we cache an IV which
1830 may be later translated to an NV, and the resulting NV is not
1831 the translation of the initial data.
1833 This means that if we cache such an IV, we need to cache the
1834 NV as well. Moreover, we trade speed for space, and do not
1835 cache the NV if we are sure it's not needed.
1838 if ((numtype & ~IS_NUMBER_NEG) == IS_NUMBER_TO_INT_BY_ATOL) {
1839 /* The NV may be reconstructed from IV - safe to cache IV,
1840 which may be calculated by atol(). */
1841 if (SvTYPE(sv) < SVt_PVIV)
1842 sv_upgrade(sv, SVt_PVIV);
1844 SvIVX(sv) = Atol(SvPVX(sv));
1848 int save_errno = errno;
1849 /* Is it an integer that we could convert with strtol?
1850 So try it, and if it doesn't set errno then it's pukka.
1851 This should be faster than going atof and then thinking. */
1852 if (((numtype & (IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_NOT_INT))
1853 == IS_NUMBER_TO_INT_BY_STRTOL)
1854 /* && is a sequence point. Without it not sure if I'm trying
1855 to do too much between sequence points and hence going
1857 && ((errno = 0), 1) /* , 1 so always true */
1858 && ((i = Strtol(SvPVX(sv), Null(char**), 10)), 1)
1860 if (SvTYPE(sv) < SVt_PVIV)
1861 sv_upgrade(sv, SVt_PVIV);
1870 /* Hopefully trace flow will optimise this away where possible
1874 /* It wasn't an integer, or it overflowed, or we don't have
1875 strtol. Do things the slow way - check if it's a UV etc. */
1876 d = Atof(SvPVX(sv));
1878 if (SvTYPE(sv) < SVt_PVNV)
1879 sv_upgrade(sv, SVt_PVNV);
1882 if (! numtype && ckWARN(WARN_NUMERIC))
1885 #if defined(USE_LONG_DOUBLE)
1886 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n",
1887 PTR2UV(sv), SvNVX(sv)));
1889 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%g)\n",
1890 PTR2UV(sv), SvNVX(sv)));
1894 #ifdef NV_PRESERVES_UV
1895 (void)SvIOKp_on(sv);
1897 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
1898 SvIVX(sv) = I_V(SvNVX(sv));
1899 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
1902 /* Integer is imprecise. NOK, IOKp */
1904 /* UV will not work better than IV */
1906 if (SvNVX(sv) > (NV)UV_MAX) {
1908 /* Integer is inaccurate. NOK, IOKp, is UV */
1912 SvUVX(sv) = U_V(SvNVX(sv));
1913 /* 0xFFFFFFFFFFFFFFFF not an issue in here */
1914 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
1918 /* Integer is imprecise. NOK, IOKp, is UV */
1924 #else /* NV_PRESERVES_UV */
1925 if (((UV)1 << NV_PRESERVES_UV_BITS) >
1926 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) {
1927 /* Small enough to preserve all bits. */
1928 (void)SvIOKp_on(sv);
1930 SvIVX(sv) = I_V(SvNVX(sv));
1931 if ((NV)(SvIVX(sv)) == SvNVX(sv))
1933 /* Assumption: first non-preserved integer is < IV_MAX,
1934 this NV is in the preserved range, therefore: */
1935 if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))
1937 Perl_croak(aTHX_ "sv_2iv assumed (U_V(fabs(SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%g U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX);
1939 } else if (sv_2iuv_non_preserve (sv, numtype)
1940 >= IS_NUMBER_OVERFLOW_IV)
1942 #endif /* NV_PRESERVES_UV */
1946 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1948 if (SvTYPE(sv) < SVt_IV)
1949 /* Typically the caller expects that sv_any is not NULL now. */
1950 sv_upgrade(sv, SVt_IV);
1953 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1954 PTR2UV(sv),SvIVX(sv)));
1955 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1959 Perl_sv_2uv(pTHX_ register SV *sv)
1963 if (SvGMAGICAL(sv)) {
1968 return U_V(SvNVX(sv));
1969 if (SvPOKp(sv) && SvLEN(sv))
1972 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1973 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1979 if (SvTHINKFIRST(sv)) {
1982 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1983 (SvRV(tmpstr) != SvRV(sv)))
1984 return SvUV(tmpstr);
1985 return PTR2UV(SvRV(sv));
1987 if (SvREADONLY(sv) && SvFAKE(sv)) {
1988 sv_force_normal(sv);
1990 if (SvREADONLY(sv) && !SvOK(sv)) {
1991 if (ckWARN(WARN_UNINITIALIZED))
2001 return (UV)SvIVX(sv);
2005 /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv
2006 * without also getting a cached IV/UV from it at the same time
2007 * (ie PV->NV conversion should detect loss of accuracy and cache
2008 * IV or UV at same time to avoid this. */
2009 /* IV-over-UV optimisation - choose to cache IV if possible */
2011 if (SvTYPE(sv) == SVt_NV)
2012 sv_upgrade(sv, SVt_PVNV);
2014 (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */
2015 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
2016 SvIVX(sv) = I_V(SvNVX(sv));
2017 if (SvNVX(sv) == (NV) SvIVX(sv)
2018 #ifndef NV_PRESERVES_UV
2019 && (((UV)1 << NV_PRESERVES_UV_BITS) >
2020 (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv)))
2021 /* Don't flag it as "accurately an integer" if the number
2022 came from a (by definition imprecise) NV operation, and
2023 we're outside the range of NV integer precision */
2026 SvIOK_on(sv); /* Can this go wrong with rounding? NWC */
2027 DEBUG_c(PerlIO_printf(Perl_debug_log,
2028 "0x%"UVxf" uv(%g => %"IVdf") (precise)\n",
2034 /* IV not precise. No need to convert from PV, as NV
2035 conversion would already have cached IV if it detected
2036 that PV->IV would be better than PV->NV->IV
2037 flags already correct - don't set public IOK. */
2038 DEBUG_c(PerlIO_printf(Perl_debug_log,
2039 "0x%"UVxf" uv(%g => %"IVdf") (imprecise)\n",
2044 /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN,
2045 but the cast (NV)IV_MIN rounds to a the value less (more
2046 negative) than IV_MIN which happens to be equal to SvNVX ??
2047 Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and
2048 NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and
2049 (NV)UVX == NVX are both true, but the values differ. :-(
2050 Hopefully for 2s complement IV_MIN is something like
2051 0x8000000000000000 which will be exact. NWC */
2054 SvUVX(sv) = U_V(SvNVX(sv));
2056 (SvNVX(sv) == (NV) SvUVX(sv))
2057 #ifndef NV_PRESERVES_UV
2058 /* Make sure it's not 0xFFFFFFFFFFFFFFFF */
2059 /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */
2060 && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv))
2061 /* Don't flag it as "accurately an integer" if the number
2062 came from a (by definition imprecise) NV operation, and
2063 we're outside the range of NV integer precision */
2068 DEBUG_c(PerlIO_printf(Perl_debug_log,
2069 "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n",
2075 else if (SvPOKp(sv) && SvLEN(sv)) {
2076 I32 numtype = looks_like_number(sv);
2078 /* We want to avoid a possible problem when we cache a UV which
2079 may be later translated to an NV, and the resulting NV is not
2080 the translation of the initial data.
2082 This means that if we cache such a UV, we need to cache the
2083 NV as well. Moreover, we trade speed for space, and do not
2084 cache the NV if not needed.
2087 if ((numtype & ~IS_NUMBER_NEG) == IS_NUMBER_TO_INT_BY_ATOL) {
2088 /* The NV may be reconstructed from IV - safe to cache IV,
2089 which may be calculated by atol(). */
2090 if (SvTYPE(sv) < SVt_PVIV)
2091 sv_upgrade(sv, SVt_PVIV);
2093 SvIVX(sv) = Atol(SvPVX(sv));
2097 char *num_begin = SvPVX(sv);
2098 int save_errno = errno;
2100 /* seems that strtoul taking numbers that start with - is
2101 implementation dependant, and can't be relied upon. */
2102 if (numtype & IS_NUMBER_NEG) {
2103 /* Not totally defensive. assumine that looks_like_num
2104 didn't lie about a - sign */
2105 while (isSPACE(*num_begin))
2107 if (*num_begin == '-')
2111 /* Is it an integer that we could convert with strtoul?
2112 So try it, and if it doesn't set errno then it's pukka.
2113 This should be faster than going atof and then thinking. */
2114 if (((numtype & (IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_NOT_INT))
2115 == IS_NUMBER_TO_INT_BY_STRTOL)
2116 && ((errno = 0), 1) /* always true */
2117 && ((u = Strtoul(num_begin, Null(char**), 10)), 1) /* ditto */
2119 /* If known to be negative, check it didn't undeflow IV
2120 XXX possibly we should put more negative values as NVs
2121 direct rather than go via atof below */
2122 && ((numtype & IS_NUMBER_NEG) ? (u <= (UV)IV_MIN) : 1)) {
2125 if (SvTYPE(sv) < SVt_PVIV)
2126 sv_upgrade(sv, SVt_PVIV);
2129 /* If it's negative must use IV.
2130 IV-over-UV optimisation */
2131 if (numtype & IS_NUMBER_NEG) {
2133 } else if (u <= (UV) IV_MAX) {
2136 /* it didn't overflow, and it was positive. */
2145 /* Hopefully trace flow will optimise this away where possible
2149 /* It wasn't an integer, or it overflowed, or we don't have
2150 strtol. Do things the slow way - check if it's a IV etc. */
2151 d = Atof(SvPVX(sv));
2153 if (SvTYPE(sv) < SVt_PVNV)
2154 sv_upgrade(sv, SVt_PVNV);
2157 if (! numtype && ckWARN(WARN_NUMERIC))
2160 #if defined(USE_LONG_DOUBLE)
2161 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n",
2162 PTR2UV(sv), SvNVX(sv)));
2164 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%g)\n",
2165 PTR2UV(sv), SvNVX(sv)));
2168 #ifdef NV_PRESERVES_UV
2169 (void)SvIOKp_on(sv);
2171 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
2172 SvIVX(sv) = I_V(SvNVX(sv));
2173 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
2176 /* Integer is imprecise. NOK, IOKp */
2178 /* UV will not work better than IV */
2180 if (SvNVX(sv) > (NV)UV_MAX) {
2182 /* Integer is inaccurate. NOK, IOKp, is UV */
2186 SvUVX(sv) = U_V(SvNVX(sv));
2187 /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs
2188 NV preservse UV so can do correct comparison. */
2189 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
2193 /* Integer is imprecise. NOK, IOKp, is UV */
2198 #else /* NV_PRESERVES_UV */
2199 if (((UV)1 << NV_PRESERVES_UV_BITS) >
2200 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) {
2201 /* Small enough to preserve all bits. */
2202 (void)SvIOKp_on(sv);
2204 SvIVX(sv) = I_V(SvNVX(sv));
2205 if ((NV)(SvIVX(sv)) == SvNVX(sv))
2207 /* Assumption: first non-preserved integer is < IV_MAX,
2208 this NV is in the preserved range, therefore: */
2209 if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))
2211 Perl_croak(aTHX_ "sv_2uv assumed (U_V(fabs(SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%g U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX);
2214 sv_2iuv_non_preserve (sv, numtype);
2215 #endif /* NV_PRESERVES_UV */
2220 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2221 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2224 if (SvTYPE(sv) < SVt_IV)
2225 /* Typically the caller expects that sv_any is not NULL now. */
2226 sv_upgrade(sv, SVt_IV);
2230 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
2231 PTR2UV(sv),SvUVX(sv)));
2232 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
2236 Perl_sv_2nv(pTHX_ register SV *sv)
2240 if (SvGMAGICAL(sv)) {
2244 if (SvPOKp(sv) && SvLEN(sv)) {
2245 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
2247 return Atof(SvPVX(sv));
2251 return (NV)SvUVX(sv);
2253 return (NV)SvIVX(sv);
2256 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2257 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2263 if (SvTHINKFIRST(sv)) {
2266 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
2267 (SvRV(tmpstr) != SvRV(sv)))
2268 return SvNV(tmpstr);
2269 return PTR2NV(SvRV(sv));
2271 if (SvREADONLY(sv) && SvFAKE(sv)) {
2272 sv_force_normal(sv);
2274 if (SvREADONLY(sv) && !SvOK(sv)) {
2275 if (ckWARN(WARN_UNINITIALIZED))
2280 if (SvTYPE(sv) < SVt_NV) {
2281 if (SvTYPE(sv) == SVt_IV)
2282 sv_upgrade(sv, SVt_PVNV);
2284 sv_upgrade(sv, SVt_NV);
2285 #if defined(USE_LONG_DOUBLE)
2287 STORE_NUMERIC_LOCAL_SET_STANDARD();
2288 PerlIO_printf(Perl_debug_log,
2289 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
2290 PTR2UV(sv), SvNVX(sv));
2291 RESTORE_NUMERIC_LOCAL();
2295 STORE_NUMERIC_LOCAL_SET_STANDARD();
2296 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
2297 PTR2UV(sv), SvNVX(sv));
2298 RESTORE_NUMERIC_LOCAL();
2302 else if (SvTYPE(sv) < SVt_PVNV)
2303 sv_upgrade(sv, SVt_PVNV);
2305 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
2307 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
2308 #ifdef NV_PRESERVES_UV
2311 /* Only set the public NV OK flag if this NV preserves the IV */
2312 /* Check it's not 0xFFFFFFFFFFFFFFFF */
2313 if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv))))
2314 : (SvIVX(sv) == I_V(SvNVX(sv))))
2320 else if (SvPOKp(sv) && SvLEN(sv)) {
2321 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
2323 SvNVX(sv) = Atof(SvPVX(sv));
2324 #ifdef NV_PRESERVES_UV
2327 /* Only set the public NV OK flag if this NV preserves the value in
2328 the PV at least as well as an IV/UV would.
2329 Not sure how to do this 100% reliably. */
2330 /* if that shift count is out of range then Configure's test is
2331 wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS ==
2333 if (((UV)1 << NV_PRESERVES_UV_BITS) >
2334 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)))
2335 SvNOK_on(sv); /* Definitely small enough to preserve all bits */
2336 else if (SvNVX(sv) < (NV)IV_MIN || SvNVX(sv) > (NV)UV_MAX) {
2337 /* Definitely too large/small to fit in an integer, so no loss
2338 of precision going to integer in the future via NV */
2341 /* Is it something we can run through strtol etc (ie no
2342 trailing exponent part)? */
2343 int numtype = looks_like_number(sv);
2344 /* XXX probably should cache this if called above */
2347 (IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_TO_INT_BY_STRTOL))) {
2348 /* Can't use strtol etc to convert this string, so don't try */
2351 sv_2inuv_non_preserve (sv, numtype);
2353 #endif /* NV_PRESERVES_UV */
2356 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2358 if (SvTYPE(sv) < SVt_NV)
2359 /* Typically the caller expects that sv_any is not NULL now. */
2360 /* XXX Ilya implies that this is a bug in callers that assume this
2361 and ideally should be fixed. */
2362 sv_upgrade(sv, SVt_NV);
2365 #if defined(USE_LONG_DOUBLE)
2367 STORE_NUMERIC_LOCAL_SET_STANDARD();
2368 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
2369 PTR2UV(sv), SvNVX(sv));
2370 RESTORE_NUMERIC_LOCAL();
2374 STORE_NUMERIC_LOCAL_SET_STANDARD();
2375 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
2376 PTR2UV(sv), SvNVX(sv));
2377 RESTORE_NUMERIC_LOCAL();
2384 S_asIV(pTHX_ SV *sv)
2386 I32 numtype = looks_like_number(sv);
2389 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
2390 return Atol(SvPVX(sv));
2392 if (ckWARN(WARN_NUMERIC))
2395 d = Atof(SvPVX(sv));
2400 S_asUV(pTHX_ SV *sv)
2402 I32 numtype = looks_like_number(sv);
2405 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
2406 return Strtoul(SvPVX(sv), Null(char**), 10);
2409 if (ckWARN(WARN_NUMERIC))
2412 return U_V(Atof(SvPVX(sv)));
2416 * Returns a combination of (advisory only - can get false negatives)
2417 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF
2418 * IS_NUMBER_LONGER_THAN_IV_MAX, IS_NUMBER_AS_LONG_AS_IV_MAX
2419 * IS_NUMBER_NOT_INT, IS_NUMBER_NEG, IS_NUMBER_INFINITY
2420 * 0 if does not look like number.
2422 * (atol and strtol stop when they hit a decimal point. strtol will return
2423 * LONG_MAX and LONG_MIN when given out of range values. ANSI says they should
2424 * do this, and vendors have had 11 years to get it right.
2425 * However, will try to make it still work with only atol
2427 * IS_NUMBER_TO_INT_BY_ATOL 123456789 or 123456789.3 definitely < IV_MAX
2428 * IS_NUMBER_TO_INT_BY_STRTOL 123456789 or 123456789.3 if digits = IV_MAX
2429 * IS_NUMBER_TO_INT_BY_ATOF 123456789e0 or >> IV_MAX
2430 * IS_NUMBER_LONGER_THAN_IV_MAX lots of digits, don't bother with atol
2431 * IS_NUMBER_AS_LONG_AS_IV_MAX atol might hit LONG_MAX, might not.
2432 * IS_NUMBER_NOT_INT saw "." or "e"
2434 * IS_NUMBER_INFINITY
2438 =for apidoc looks_like_number
2440 Test if an the content of an SV looks like a number (or is a
2441 number). C<Inf> and C<Infinity> are treated as numbers (so will not
2442 issue a non-numeric warning), even if your atof() doesn't grok them.
2448 Perl_looks_like_number(pTHX_ SV *sv)
2451 register char *send;
2452 register char *sbegin;
2453 register char *nbegin;
2457 #ifdef USE_LOCALE_NUMERIC
2458 bool specialradix = FALSE;
2465 else if (SvPOKp(sv))
2466 sbegin = SvPV(sv, len);
2469 send = sbegin + len;
2476 numtype = IS_NUMBER_NEG;
2483 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can converted to
2484 * integer with atol() without overflow, IS_NUMBER_TO_INT_BY_STRTOL if
2485 * possibly slightly larger than max int, IS_NUMBER_TO_INT_BY_ATOF if you
2486 * will need (int)atof().
2489 /* next must be digit or the radix separator or beginning of infinity */
2493 } while (isDIGIT(*s));
2495 /* Aaargh. long long really is irritating.
2496 In the gospel according to ANSI 1989, it is an axiom that "long"
2497 is the longest integer type, and that if you don't know how long
2498 something is you can cast it to long, and nothing will be lost
2499 (except possibly speed of execution if long is slower than the
2501 Now, one can't be sure if the old rules apply, or long long
2502 (or some other newfangled thing) is actually longer than the
2503 (formerly) longest thing.
2505 /* This lot will work for 64 bit *as long as* either
2506 either long is 64 bit
2507 or we can find both strtol/strtoq and strtoul/strtouq
2508 If not, we really should refuse to let the user use 64 bit IVs
2509 By "64 bit" I really mean IVs that don't get preserved by NVs
2510 It also should work for 128 bit IVs. Can any lend me a machine to
2513 if (s - nbegin > TYPE_DIGITS(UV)) /* Cannot cache ato[ul]() */
2514 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_LONGER_THAN_IV_MAX;
2515 else if (s - nbegin < BIT_DIGITS(((sizeof (IV)>sizeof (long))
2516 ? sizeof(long) : sizeof (IV))*8-1))
2517 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
2519 /* Can't be sure either way. (For 64 bit UV, 63 bit IV is 1 decimal
2520 digit less (IV_MAX= 9223372036854775807,
2521 UV_MAX= 18446744073709551615) so be cautious */
2522 numtype |= IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_AS_LONG_AS_IV_MAX;
2525 #ifdef USE_LOCALE_NUMERIC
2526 || (specialradix = IS_NUMERIC_RADIX(s))
2529 #ifdef USE_LOCALE_NUMERIC
2531 s += SvCUR(PL_numeric_radix);
2535 numtype |= IS_NUMBER_NOT_INT;
2536 while (isDIGIT(*s)) /* optional digits after the radix */
2541 #ifdef USE_LOCALE_NUMERIC
2542 || (specialradix = IS_NUMERIC_RADIX(s))
2545 #ifdef USE_LOCALE_NUMERIC
2547 s += SvCUR(PL_numeric_radix);
2551 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_INT;
2552 /* no digits before the radix means we need digits after it */
2556 } while (isDIGIT(*s));
2561 else if (*s == 'I' || *s == 'i') {
2562 s++; if (*s != 'N' && *s != 'n') return 0;
2563 s++; if (*s != 'F' && *s != 'f') return 0;
2564 s++; if (*s == 'I' || *s == 'i') {
2565 s++; if (*s != 'N' && *s != 'n') return 0;
2566 s++; if (*s != 'I' && *s != 'i') return 0;
2567 s++; if (*s != 'T' && *s != 't') return 0;
2568 s++; if (*s != 'Y' && *s != 'y') return 0;
2577 numtype = (numtype & IS_NUMBER_NEG) /* Keep track of sign */
2578 | IS_NUMBER_INFINITY | IS_NUMBER_NOT_INT;
2580 /* we can have an optional exponent part */
2581 if (*s == 'e' || *s == 'E') {
2582 numtype &= IS_NUMBER_NEG;
2583 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_INT;
2585 if (*s == '+' || *s == '-')
2590 } while (isDIGIT(*s));
2600 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2601 return IS_NUMBER_TO_INT_BY_ATOL;
2606 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2609 return sv_2pv(sv, &n_a);
2612 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2614 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2616 char *ptr = buf + TYPE_CHARS(UV);
2630 *--ptr = '0' + (uv % 10);
2639 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2644 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2645 char *tmpbuf = tbuf;
2651 if (SvGMAGICAL(sv)) {
2659 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2661 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2666 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2671 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2672 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2679 if (SvTHINKFIRST(sv)) {
2682 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2683 (SvRV(tmpstr) != SvRV(sv)))
2684 return SvPV(tmpstr,*lp);
2691 switch (SvTYPE(sv)) {
2693 if ( ((SvFLAGS(sv) &
2694 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2695 == (SVs_OBJECT|SVs_RMG))
2696 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2697 && (mg = mg_find(sv, 'r'))) {
2698 regexp *re = (regexp *)mg->mg_obj;
2701 char *fptr = "msix";
2706 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2708 while((ch = *fptr++)) {
2710 reflags[left++] = ch;
2713 reflags[right--] = ch;
2718 reflags[left] = '-';
2722 mg->mg_len = re->prelen + 4 + left;
2723 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2724 Copy("(?", mg->mg_ptr, 2, char);
2725 Copy(reflags, mg->mg_ptr+2, left, char);
2726 Copy(":", mg->mg_ptr+left+2, 1, char);
2727 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2728 mg->mg_ptr[mg->mg_len - 1] = ')';
2729 mg->mg_ptr[mg->mg_len] = 0;
2731 PL_reginterp_cnt += re->program[0].next_off;
2743 case SVt_PVBM: if (SvROK(sv))
2746 s = "SCALAR"; break;
2747 case SVt_PVLV: s = "LVALUE"; break;
2748 case SVt_PVAV: s = "ARRAY"; break;
2749 case SVt_PVHV: s = "HASH"; break;
2750 case SVt_PVCV: s = "CODE"; break;
2751 case SVt_PVGV: s = "GLOB"; break;
2752 case SVt_PVFM: s = "FORMAT"; break;
2753 case SVt_PVIO: s = "IO"; break;
2754 default: s = "UNKNOWN"; break;
2758 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2761 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2767 if (SvREADONLY(sv) && !SvOK(sv)) {
2768 if (ckWARN(WARN_UNINITIALIZED))
2774 if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) {
2775 /* I'm assuming that if both IV and NV are equally valid then
2776 converting the IV is going to be more efficient */
2777 U32 isIOK = SvIOK(sv);
2778 U32 isUIOK = SvIsUV(sv);
2779 char buf[TYPE_CHARS(UV)];
2782 if (SvTYPE(sv) < SVt_PVIV)
2783 sv_upgrade(sv, SVt_PVIV);
2785 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2787 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2788 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2789 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2790 SvCUR_set(sv, ebuf - ptr);
2800 else if (SvNOKp(sv)) {
2801 if (SvTYPE(sv) < SVt_PVNV)
2802 sv_upgrade(sv, SVt_PVNV);
2803 /* The +20 is pure guesswork. Configure test needed. --jhi */
2804 SvGROW(sv, NV_DIG + 20);
2806 olderrno = errno; /* some Xenix systems wipe out errno here */
2808 if (SvNVX(sv) == 0.0)
2809 (void)strcpy(s,"0");
2813 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2816 #ifdef FIXNEGATIVEZERO
2817 if (*s == '-' && s[1] == '0' && !s[2])
2827 if (ckWARN(WARN_UNINITIALIZED)
2828 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2831 if (SvTYPE(sv) < SVt_PV)
2832 /* Typically the caller expects that sv_any is not NULL now. */
2833 sv_upgrade(sv, SVt_PV);
2836 *lp = s - SvPVX(sv);
2839 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2840 PTR2UV(sv),SvPVX(sv)));
2844 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2845 /* Sneaky stuff here */
2849 tsv = newSVpv(tmpbuf, 0);
2865 len = strlen(tmpbuf);
2867 #ifdef FIXNEGATIVEZERO
2868 if (len == 2 && t[0] == '-' && t[1] == '0') {
2873 (void)SvUPGRADE(sv, SVt_PV);
2875 s = SvGROW(sv, len + 1);
2884 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2887 return sv_2pvbyte(sv, &n_a);
2891 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2893 sv_utf8_downgrade(sv,0);
2894 return SvPV(sv,*lp);
2898 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2901 return sv_2pvutf8(sv, &n_a);
2905 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2907 sv_utf8_upgrade(sv);
2908 return SvPV(sv,*lp);
2911 /* This function is only called on magical items */
2913 Perl_sv_2bool(pTHX_ register SV *sv)
2922 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2923 (SvRV(tmpsv) != SvRV(sv)))
2924 return SvTRUE(tmpsv);
2925 return SvRV(sv) != 0;
2928 register XPV* Xpvtmp;
2929 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2930 (*Xpvtmp->xpv_pv > '0' ||
2931 Xpvtmp->xpv_cur > 1 ||
2932 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2939 return SvIVX(sv) != 0;
2942 return SvNVX(sv) != 0.0;
2950 =for apidoc sv_utf8_upgrade
2952 Convert the PV of an SV to its UTF8-encoded form.
2953 Forces the SV to string form it it is not already.
2954 Always sets the SvUTF8 flag to avoid future validity checks even
2955 if all the bytes have hibit clear.
2961 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2970 (void) SvPV_nolen(sv);
2975 if (SvREADONLY(sv) && SvFAKE(sv)) {
2976 sv_force_normal(sv);
2979 /* This function could be much more efficient if we had a FLAG in SVs
2980 * to signal if there are any hibit chars in the PV.
2981 * Given that there isn't make loop fast as possible
2983 s = (U8 *) SvPVX(sv);
2984 e = (U8 *) SvEND(sv);
2988 if ((hibit = !NATIVE_IS_INVARIANT(ch)))
2994 len = SvCUR(sv) + 1; /* Plus the \0 */
2995 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2996 SvCUR(sv) = len - 1;
2998 Safefree(s); /* No longer using what was there before. */
2999 SvLEN(sv) = len; /* No longer know the real size. */
3001 /* Mark as UTF-8 even if no hibit - saves scanning loop */
3007 =for apidoc sv_utf8_downgrade
3009 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
3010 This may not be possible if the PV contains non-byte encoding characters;
3011 if this is the case, either returns false or, if C<fail_ok> is not
3018 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
3020 if (SvPOK(sv) && SvUTF8(sv)) {
3025 if (SvREADONLY(sv) && SvFAKE(sv))
3026 sv_force_normal(sv);
3027 s = (U8 *) SvPV(sv, len);
3028 if (!utf8_to_bytes(s, &len)) {
3031 #ifdef USE_BYTES_DOWNGRADES
3034 U8 *e = (U8 *) SvEND(sv);
3037 UV ch = utf8n_to_uvchr(s,(e-s),&len,0);
3038 if (first && ch > 255) {
3040 Perl_warner(aTHX_ WARN_UTF8, "Wide character in byte %s",
3041 PL_op_desc[PL_op->op_type]);
3043 Perl_warner(aTHX_ WARN_UTF8, "Wide character in byte");
3050 len = (d - (U8 *) SvPVX(sv));
3055 Perl_croak(aTHX_ "Wide character in %s",
3056 PL_op_desc[PL_op->op_type]);
3058 Perl_croak(aTHX_ "Wide character");
3069 =for apidoc sv_utf8_encode
3071 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
3072 flag so that it looks like octets again. Used as a building block
3073 for encode_utf8 in Encode.xs
3079 Perl_sv_utf8_encode(pTHX_ register SV *sv)
3081 (void) sv_utf8_upgrade(sv);
3086 =for apidoc sv_utf8_decode
3088 Convert the octets in the PV from UTF-8 to chars. Scan for validity and then
3089 turn of SvUTF8 if needed so that we see characters. Used as a building block
3090 for decode_utf8 in Encode.xs
3098 Perl_sv_utf8_decode(pTHX_ register SV *sv)
3104 /* The octets may have got themselves encoded - get them back as bytes */
3105 if (!sv_utf8_downgrade(sv, TRUE))
3108 /* it is actually just a matter of turning the utf8 flag on, but
3109 * we want to make sure everything inside is valid utf8 first.
3111 c = (U8 *) SvPVX(sv);
3112 if (!is_utf8_string(c, SvCUR(sv)+1))
3114 e = (U8 *) SvEND(sv);
3117 if (!UTF8_IS_INVARIANT(ch)) {
3127 /* Note: sv_setsv() should not be called with a source string that needs
3128 * to be reused, since it may destroy the source string if it is marked
3133 =for apidoc sv_setsv
3135 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
3136 The source SV may be destroyed if it is mortal. Does not handle 'set'
3137 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
3144 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
3146 register U32 sflags;
3152 SV_CHECK_THINKFIRST(dstr);
3154 sstr = &PL_sv_undef;
3155 stype = SvTYPE(sstr);
3156 dtype = SvTYPE(dstr);
3160 /* There's a lot of redundancy below but we're going for speed here */
3165 if (dtype != SVt_PVGV) {
3166 (void)SvOK_off(dstr);
3174 sv_upgrade(dstr, SVt_IV);
3177 sv_upgrade(dstr, SVt_PVNV);
3181 sv_upgrade(dstr, SVt_PVIV);
3184 (void)SvIOK_only(dstr);
3185 SvIVX(dstr) = SvIVX(sstr);
3188 if (SvTAINTED(sstr))
3199 sv_upgrade(dstr, SVt_NV);
3204 sv_upgrade(dstr, SVt_PVNV);
3207 SvNVX(dstr) = SvNVX(sstr);
3208 (void)SvNOK_only(dstr);
3209 if (SvTAINTED(sstr))
3217 sv_upgrade(dstr, SVt_RV);
3218 else if (dtype == SVt_PVGV &&
3219 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
3222 if (GvIMPORTED(dstr) != GVf_IMPORTED
3223 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3225 GvIMPORTED_on(dstr);
3236 sv_upgrade(dstr, SVt_PV);
3239 if (dtype < SVt_PVIV)
3240 sv_upgrade(dstr, SVt_PVIV);
3243 if (dtype < SVt_PVNV)
3244 sv_upgrade(dstr, SVt_PVNV);
3251 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
3252 PL_op_name[PL_op->op_type]);
3254 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
3258 if (dtype <= SVt_PVGV) {
3260 if (dtype != SVt_PVGV) {
3261 char *name = GvNAME(sstr);
3262 STRLEN len = GvNAMELEN(sstr);
3263 sv_upgrade(dstr, SVt_PVGV);
3264 sv_magic(dstr, dstr, '*', Nullch, 0);
3265 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
3266 GvNAME(dstr) = savepvn(name, len);
3267 GvNAMELEN(dstr) = len;
3268 SvFAKE_on(dstr); /* can coerce to non-glob */
3270 /* ahem, death to those who redefine active sort subs */
3271 else if (PL_curstackinfo->si_type == PERLSI_SORT
3272 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
3273 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
3276 #ifdef GV_SHARED_CHECK
3277 if (GvSHARED((GV*)dstr)) {
3278 Perl_croak(aTHX_ PL_no_modify);
3282 (void)SvOK_off(dstr);
3283 GvINTRO_off(dstr); /* one-shot flag */
3285 GvGP(dstr) = gp_ref(GvGP(sstr));
3286 if (SvTAINTED(sstr))
3288 if (GvIMPORTED(dstr) != GVf_IMPORTED
3289 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3291 GvIMPORTED_on(dstr);
3299 if (SvGMAGICAL(sstr)) {
3301 if (SvTYPE(sstr) != stype) {
3302 stype = SvTYPE(sstr);
3303 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
3307 if (stype == SVt_PVLV)
3308 (void)SvUPGRADE(dstr, SVt_PVNV);
3310 (void)SvUPGRADE(dstr, stype);
3313 sflags = SvFLAGS(sstr);
3315 if (sflags & SVf_ROK) {
3316 if (dtype >= SVt_PV) {
3317 if (dtype == SVt_PVGV) {
3318 SV *sref = SvREFCNT_inc(SvRV(sstr));
3320 int intro = GvINTRO(dstr);
3322 #ifdef GV_SHARED_CHECK
3323 if (GvSHARED((GV*)dstr)) {
3324 Perl_croak(aTHX_ PL_no_modify);
3331 GvINTRO_off(dstr); /* one-shot flag */
3332 Newz(602,gp, 1, GP);
3333 GvGP(dstr) = gp_ref(gp);
3334 GvSV(dstr) = NEWSV(72,0);
3335 GvLINE(dstr) = CopLINE(PL_curcop);
3336 GvEGV(dstr) = (GV*)dstr;
3339 switch (SvTYPE(sref)) {
3342 SAVESPTR(GvAV(dstr));
3344 dref = (SV*)GvAV(dstr);
3345 GvAV(dstr) = (AV*)sref;
3346 if (!GvIMPORTED_AV(dstr)
3347 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3349 GvIMPORTED_AV_on(dstr);
3354 SAVESPTR(GvHV(dstr));
3356 dref = (SV*)GvHV(dstr);
3357 GvHV(dstr) = (HV*)sref;
3358 if (!GvIMPORTED_HV(dstr)
3359 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3361 GvIMPORTED_HV_on(dstr);
3366 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
3367 SvREFCNT_dec(GvCV(dstr));
3368 GvCV(dstr) = Nullcv;
3369 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3370 PL_sub_generation++;
3372 SAVESPTR(GvCV(dstr));
3375 dref = (SV*)GvCV(dstr);
3376 if (GvCV(dstr) != (CV*)sref) {
3377 CV* cv = GvCV(dstr);
3379 if (!GvCVGEN((GV*)dstr) &&
3380 (CvROOT(cv) || CvXSUB(cv)))
3382 /* ahem, death to those who redefine
3383 * active sort subs */
3384 if (PL_curstackinfo->si_type == PERLSI_SORT &&
3385 PL_sortcop == CvSTART(cv))
3387 "Can't redefine active sort subroutine %s",
3388 GvENAME((GV*)dstr));
3389 /* Redefining a sub - warning is mandatory if
3390 it was a const and its value changed. */
3391 if (ckWARN(WARN_REDEFINE)
3393 && (!CvCONST((CV*)sref)
3394 || sv_cmp(cv_const_sv(cv),
3395 cv_const_sv((CV*)sref)))))
3397 Perl_warner(aTHX_ WARN_REDEFINE,
3399 ? "Constant subroutine %s redefined"
3400 : "Subroutine %s redefined",
3401 GvENAME((GV*)dstr));
3404 cv_ckproto(cv, (GV*)dstr,
3405 SvPOK(sref) ? SvPVX(sref) : Nullch);
3407 GvCV(dstr) = (CV*)sref;
3408 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3409 GvASSUMECV_on(dstr);
3410 PL_sub_generation++;
3412 if (!GvIMPORTED_CV(dstr)
3413 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3415 GvIMPORTED_CV_on(dstr);
3420 SAVESPTR(GvIOp(dstr));
3422 dref = (SV*)GvIOp(dstr);
3423 GvIOp(dstr) = (IO*)sref;
3427 SAVESPTR(GvFORM(dstr));
3429 dref = (SV*)GvFORM(dstr);
3430 GvFORM(dstr) = (CV*)sref;
3434 SAVESPTR(GvSV(dstr));
3436 dref = (SV*)GvSV(dstr);
3438 if (!GvIMPORTED_SV(dstr)
3439 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3441 GvIMPORTED_SV_on(dstr);
3449 if (SvTAINTED(sstr))
3454 (void)SvOOK_off(dstr); /* backoff */
3456 Safefree(SvPVX(dstr));
3457 SvLEN(dstr)=SvCUR(dstr)=0;
3460 (void)SvOK_off(dstr);
3461 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
3463 if (sflags & SVp_NOK) {
3465 /* Only set the public OK flag if the source has public OK. */
3466 if (sflags & SVf_NOK)
3467 SvFLAGS(dstr) |= SVf_NOK;
3468 SvNVX(dstr) = SvNVX(sstr);
3470 if (sflags & SVp_IOK) {
3471 (void)SvIOKp_on(dstr);
3472 if (sflags & SVf_IOK)
3473 SvFLAGS(dstr) |= SVf_IOK;
3474 if (sflags & SVf_IVisUV)
3476 SvIVX(dstr) = SvIVX(sstr);
3478 if (SvAMAGIC(sstr)) {
3482 else if (sflags & SVp_POK) {
3485 * Check to see if we can just swipe the string. If so, it's a
3486 * possible small lose on short strings, but a big win on long ones.
3487 * It might even be a win on short strings if SvPVX(dstr)
3488 * has to be allocated and SvPVX(sstr) has to be freed.
3491 if (SvTEMP(sstr) && /* slated for free anyway? */
3492 SvREFCNT(sstr) == 1 && /* and no other references to it? */
3493 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
3494 SvLEN(sstr) && /* and really is a string */
3495 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
3497 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
3499 SvFLAGS(dstr) &= ~SVf_OOK;
3500 Safefree(SvPVX(dstr) - SvIVX(dstr));
3502 else if (SvLEN(dstr))
3503 Safefree(SvPVX(dstr));
3505 (void)SvPOK_only(dstr);
3506 SvPV_set(dstr, SvPVX(sstr));
3507 SvLEN_set(dstr, SvLEN(sstr));
3508 SvCUR_set(dstr, SvCUR(sstr));
3511 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
3512 SvPV_set(sstr, Nullch);
3517 else { /* have to copy actual string */
3518 STRLEN len = SvCUR(sstr);
3520 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
3521 Move(SvPVX(sstr),SvPVX(dstr),len,char);
3522 SvCUR_set(dstr, len);
3523 *SvEND(dstr) = '\0';
3524 (void)SvPOK_only(dstr);
3526 if (sflags & SVf_UTF8)
3529 if (sflags & SVp_NOK) {
3531 if (sflags & SVf_NOK)
3532 SvFLAGS(dstr) |= SVf_NOK;
3533 SvNVX(dstr) = SvNVX(sstr);
3535 if (sflags & SVp_IOK) {
3536 (void)SvIOKp_on(dstr);
3537 if (sflags & SVf_IOK)
3538 SvFLAGS(dstr) |= SVf_IOK;
3539 if (sflags & SVf_IVisUV)
3541 SvIVX(dstr) = SvIVX(sstr);
3544 else if (sflags & SVp_IOK) {
3545 if (sflags & SVf_IOK)
3546 (void)SvIOK_only(dstr);
3548 (void)SvOK_off(dstr);
3549 (void)SvIOKp_on(dstr);
3551 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
3552 if (sflags & SVf_IVisUV)
3554 SvIVX(dstr) = SvIVX(sstr);
3555 if (sflags & SVp_NOK) {
3556 if (sflags & SVf_NOK)
3557 (void)SvNOK_on(dstr);
3559 (void)SvNOKp_on(dstr);
3560 SvNVX(dstr) = SvNVX(sstr);
3563 else if (sflags & SVp_NOK) {
3564 if (sflags & SVf_NOK)
3565 (void)SvNOK_only(dstr);
3567 (void)SvOK_off(dstr);
3570 SvNVX(dstr) = SvNVX(sstr);
3573 if (dtype == SVt_PVGV) {
3574 if (ckWARN(WARN_MISC))
3575 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
3578 (void)SvOK_off(dstr);
3580 if (SvTAINTED(sstr))
3585 =for apidoc sv_setsv_mg
3587 Like C<sv_setsv>, but also handles 'set' magic.
3593 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
3595 sv_setsv(dstr,sstr);
3600 =for apidoc sv_setpvn
3602 Copies a string into an SV. The C<len> parameter indicates the number of
3603 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
3609 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3611 register char *dptr;
3613 SV_CHECK_THINKFIRST(sv);
3619 /* len is STRLEN which is unsigned, need to copy to signed */
3623 (void)SvUPGRADE(sv, SVt_PV);
3625 SvGROW(sv, len + 1);
3627 Move(ptr,dptr,len,char);
3630 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3635 =for apidoc sv_setpvn_mg
3637 Like C<sv_setpvn>, but also handles 'set' magic.
3643 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3645 sv_setpvn(sv,ptr,len);
3650 =for apidoc sv_setpv
3652 Copies a string into an SV. The string must be null-terminated. Does not
3653 handle 'set' magic. See C<sv_setpv_mg>.
3659 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3661 register STRLEN len;
3663 SV_CHECK_THINKFIRST(sv);
3669 (void)SvUPGRADE(sv, SVt_PV);
3671 SvGROW(sv, len + 1);
3672 Move(ptr,SvPVX(sv),len+1,char);
3674 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3679 =for apidoc sv_setpv_mg
3681 Like C<sv_setpv>, but also handles 'set' magic.
3687 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3694 =for apidoc sv_usepvn
3696 Tells an SV to use C<ptr> to find its string value. Normally the string is
3697 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3698 The C<ptr> should point to memory that was allocated by C<malloc>. The
3699 string length, C<len>, must be supplied. This function will realloc the
3700 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3701 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3702 See C<sv_usepvn_mg>.
3708 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3710 SV_CHECK_THINKFIRST(sv);
3711 (void)SvUPGRADE(sv, SVt_PV);
3716 (void)SvOOK_off(sv);
3717 if (SvPVX(sv) && SvLEN(sv))
3718 Safefree(SvPVX(sv));
3719 Renew(ptr, len+1, char);
3722 SvLEN_set(sv, len+1);
3724 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3729 =for apidoc sv_usepvn_mg
3731 Like C<sv_usepvn>, but also handles 'set' magic.
3737 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3739 sv_usepvn(sv,ptr,len);
3744 Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags)
3746 if (SvREADONLY(sv)) {
3748 char *pvx = SvPVX(sv);
3749 STRLEN len = SvCUR(sv);
3750 U32 hash = SvUVX(sv);
3751 SvGROW(sv, len + 1);
3752 Move(pvx,SvPVX(sv),len,char);
3756 unsharepvn(pvx,SvUTF8(sv)?-len:len,hash);
3758 else if (PL_curcop != &PL_compiling)
3759 Perl_croak(aTHX_ PL_no_modify);
3762 sv_unref_flags(sv, flags);
3763 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3768 Perl_sv_force_normal(pTHX_ register SV *sv)
3770 sv_force_normal_flags(sv, 0);
3776 Efficient removal of characters from the beginning of the string buffer.
3777 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3778 the string buffer. The C<ptr> becomes the first character of the adjusted
3785 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3789 register STRLEN delta;
3791 if (!ptr || !SvPOKp(sv))
3793 SV_CHECK_THINKFIRST(sv);
3794 if (SvTYPE(sv) < SVt_PVIV)
3795 sv_upgrade(sv,SVt_PVIV);
3798 if (!SvLEN(sv)) { /* make copy of shared string */
3799 char *pvx = SvPVX(sv);
3800 STRLEN len = SvCUR(sv);
3801 SvGROW(sv, len + 1);
3802 Move(pvx,SvPVX(sv),len,char);
3806 SvFLAGS(sv) |= SVf_OOK;
3808 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3809 delta = ptr - SvPVX(sv);
3817 =for apidoc sv_catpvn
3819 Concatenates the string onto the end of the string which is in the SV. The
3820 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3821 'set' magic. See C<sv_catpvn_mg>.
3827 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3832 junk = SvPV_force(sv, tlen);
3833 SvGROW(sv, tlen + len + 1);
3836 Move(ptr,SvPVX(sv)+tlen,len,char);
3839 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3844 =for apidoc sv_catpvn_mg
3846 Like C<sv_catpvn>, but also handles 'set' magic.
3852 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3854 sv_catpvn(sv,ptr,len);
3859 =for apidoc sv_catsv
3861 Concatenates the string from SV C<ssv> onto the end of the string in
3862 SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but
3863 not 'set' magic. See C<sv_catsv_mg>.
3868 Perl_sv_catsv(pTHX_ SV *dsv, register SV *ssv)
3874 if ((spv = SvPV(ssv, slen))) {
3875 bool dutf8 = DO_UTF8(dsv);
3876 bool sutf8 = DO_UTF8(ssv);
3879 sv_catpvn(dsv,spv,slen);
3882 /* Not modifying source SV, so taking a temporary copy. */
3883 SV* csv = sv_2mortal(newSVsv(ssv));
3887 sv_utf8_upgrade(csv);
3888 cpv = SvPV(csv,clen);
3889 sv_catpvn(dsv,cpv,clen);
3892 sv_utf8_upgrade(dsv);
3893 sv_catpvn(dsv,spv,slen);
3894 SvUTF8_on(dsv); /* If dsv has no wide characters. */
3901 =for apidoc sv_catsv_mg
3903 Like C<sv_catsv>, but also handles 'set' magic.
3909 Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv)
3916 =for apidoc sv_catpv
3918 Concatenates the string onto the end of the string which is in the SV.
3919 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3925 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3927 register STRLEN len;
3933 junk = SvPV_force(sv, tlen);
3935 SvGROW(sv, tlen + len + 1);
3938 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3940 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3945 =for apidoc sv_catpv_mg
3947 Like C<sv_catpv>, but also handles 'set' magic.
3953 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3960 Perl_newSV(pTHX_ STRLEN len)
3966 sv_upgrade(sv, SVt_PV);
3967 SvGROW(sv, len + 1);
3972 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3975 =for apidoc sv_magic
3977 Adds magic to an SV.
3983 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3987 if (SvREADONLY(sv)) {
3988 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3989 Perl_croak(aTHX_ PL_no_modify);
3991 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3992 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3999 (void)SvUPGRADE(sv, SVt_PVMG);
4001 Newz(702,mg, 1, MAGIC);
4002 mg->mg_moremagic = SvMAGIC(sv);
4005 /* Some magic sontains a reference loop, where the sv and object refer to
4006 each other. To prevent a avoid a reference loop that would prevent such
4007 objects being freed, we look for such loops and if we find one we avoid
4008 incrementing the object refcount. */
4009 if (!obj || obj == sv || how == '#' || how == 'r' ||
4010 (SvTYPE(obj) == SVt_PVGV &&
4011 (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv ||
4012 GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv ||
4013 GvFORM(obj) == (CV*)sv)))
4018 mg->mg_obj = SvREFCNT_inc(obj);
4019 mg->mg_flags |= MGf_REFCOUNTED;
4022 mg->mg_len = namlen;
4025 mg->mg_ptr = savepvn(name, namlen);
4026 else if (namlen == HEf_SVKEY)
4027 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
4032 mg->mg_virtual = &PL_vtbl_sv;
4035 mg->mg_virtual = &PL_vtbl_amagic;
4038 mg->mg_virtual = &PL_vtbl_amagicelem;
4041 mg->mg_virtual = &PL_vtbl_ovrld;
4044 mg->mg_virtual = &PL_vtbl_bm;
4047 mg->mg_virtual = &PL_vtbl_regdata;
4050 mg->mg_virtual = &PL_vtbl_regdatum;
4053 mg->mg_virtual = &PL_vtbl_env;
4056 mg->mg_virtual = &PL_vtbl_fm;
4059 mg->mg_virtual = &PL_vtbl_envelem;
4062 mg->mg_virtual = &PL_vtbl_mglob;
4065 mg->mg_virtual = &PL_vtbl_isa;
4068 mg->mg_virtual = &PL_vtbl_isaelem;
4071 mg->mg_virtual = &PL_vtbl_nkeys;
4078 mg->mg_virtual = &PL_vtbl_dbline;
4082 mg->mg_virtual = &PL_vtbl_mutex;
4084 #endif /* USE_THREADS */
4085 #ifdef USE_LOCALE_COLLATE
4087 mg->mg_virtual = &PL_vtbl_collxfrm;
4089 #endif /* USE_LOCALE_COLLATE */
4091 mg->mg_virtual = &PL_vtbl_pack;
4095 mg->mg_virtual = &PL_vtbl_packelem;
4098 mg->mg_virtual = &PL_vtbl_regexp;
4101 mg->mg_virtual = &PL_vtbl_sig;
4104 mg->mg_virtual = &PL_vtbl_sigelem;
4107 mg->mg_virtual = &PL_vtbl_taint;
4111 mg->mg_virtual = &PL_vtbl_uvar;
4114 mg->mg_virtual = &PL_vtbl_vec;
4117 mg->mg_virtual = &PL_vtbl_substr;
4120 mg->mg_virtual = &PL_vtbl_defelem;
4123 mg->mg_virtual = &PL_vtbl_glob;
4126 mg->mg_virtual = &PL_vtbl_arylen;
4129 mg->mg_virtual = &PL_vtbl_pos;
4132 mg->mg_virtual = &PL_vtbl_backref;
4134 case '~': /* Reserved for use by extensions not perl internals. */
4135 /* Useful for attaching extension internal data to perl vars. */
4136 /* Note that multiple extensions may clash if magical scalars */
4137 /* etc holding private data from one are passed to another. */
4141 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
4145 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
4149 =for apidoc sv_unmagic
4151 Removes magic from an SV.
4157 Perl_sv_unmagic(pTHX_ SV *sv, int type)
4161 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
4164 for (mg = *mgp; mg; mg = *mgp) {
4165 if (mg->mg_type == type) {
4166 MGVTBL* vtbl = mg->mg_virtual;
4167 *mgp = mg->mg_moremagic;
4168 if (vtbl && vtbl->svt_free)
4169 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
4170 if (mg->mg_ptr && mg->mg_type != 'g') {
4171 if (mg->mg_len >= 0)
4172 Safefree(mg->mg_ptr);
4173 else if (mg->mg_len == HEf_SVKEY)
4174 SvREFCNT_dec((SV*)mg->mg_ptr);
4176 if (mg->mg_flags & MGf_REFCOUNTED)
4177 SvREFCNT_dec(mg->mg_obj);
4181 mgp = &mg->mg_moremagic;
4185 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
4192 =for apidoc sv_rvweaken
4200 Perl_sv_rvweaken(pTHX_ SV *sv)
4203 if (!SvOK(sv)) /* let undefs pass */
4206 Perl_croak(aTHX_ "Can't weaken a nonreference");
4207 else if (SvWEAKREF(sv)) {
4208 if (ckWARN(WARN_MISC))
4209 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
4213 sv_add_backref(tsv, sv);
4220 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
4224 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
4225 av = (AV*)mg->mg_obj;
4228 sv_magic(tsv, (SV*)av, '<', NULL, 0);
4229 SvREFCNT_dec(av); /* for sv_magic */
4235 S_sv_del_backref(pTHX_ SV *sv)
4242 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
4243 Perl_croak(aTHX_ "panic: del_backref");
4244 av = (AV *)mg->mg_obj;
4249 svp[i] = &PL_sv_undef; /* XXX */
4256 =for apidoc sv_insert
4258 Inserts a string at the specified offset/length within the SV. Similar to
4259 the Perl substr() function.
4265 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
4269 register char *midend;
4270 register char *bigend;
4276 Perl_croak(aTHX_ "Can't modify non-existent substring");
4277 SvPV_force(bigstr, curlen);
4278 (void)SvPOK_only_UTF8(bigstr);
4279 if (offset + len > curlen) {
4280 SvGROW(bigstr, offset+len+1);
4281 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
4282 SvCUR_set(bigstr, offset+len);
4286 i = littlelen - len;
4287 if (i > 0) { /* string might grow */
4288 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
4289 mid = big + offset + len;
4290 midend = bigend = big + SvCUR(bigstr);
4293 while (midend > mid) /* shove everything down */
4294 *--bigend = *--midend;
4295 Move(little,big+offset,littlelen,char);
4301 Move(little,SvPVX(bigstr)+offset,len,char);
4306 big = SvPVX(bigstr);
4309 bigend = big + SvCUR(bigstr);
4311 if (midend > bigend)
4312 Perl_croak(aTHX_ "panic: sv_insert");
4314 if (mid - big > bigend - midend) { /* faster to shorten from end */
4316 Move(little, mid, littlelen,char);
4319 i = bigend - midend;
4321 Move(midend, mid, i,char);
4325 SvCUR_set(bigstr, mid - big);
4328 else if ((i = mid - big)) { /* faster from front */
4329 midend -= littlelen;
4331 sv_chop(bigstr,midend-i);
4336 Move(little, mid, littlelen,char);
4338 else if (littlelen) {
4339 midend -= littlelen;
4340 sv_chop(bigstr,midend);
4341 Move(little,midend,littlelen,char);
4344 sv_chop(bigstr,midend);
4350 =for apidoc sv_replace
4352 Make the first argument a copy of the second, then delete the original.
4358 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
4360 U32 refcnt = SvREFCNT(sv);
4361 SV_CHECK_THINKFIRST(sv);
4362 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
4363 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
4364 if (SvMAGICAL(sv)) {
4368 sv_upgrade(nsv, SVt_PVMG);
4369 SvMAGIC(nsv) = SvMAGIC(sv);
4370 SvFLAGS(nsv) |= SvMAGICAL(sv);
4376 assert(!SvREFCNT(sv));
4377 StructCopy(nsv,sv,SV);
4378 SvREFCNT(sv) = refcnt;
4379 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
4384 =for apidoc sv_clear
4386 Clear an SV, making it empty. Does not free the memory used by the SV
4393 Perl_sv_clear(pTHX_ register SV *sv)
4397 assert(SvREFCNT(sv) == 0);
4400 if (PL_defstash) { /* Still have a symbol table? */
4405 Zero(&tmpref, 1, SV);
4406 sv_upgrade(&tmpref, SVt_RV);
4408 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
4409 SvREFCNT(&tmpref) = 1;
4412 stash = SvSTASH(sv);
4413 destructor = StashHANDLER(stash,DESTROY);
4416 PUSHSTACKi(PERLSI_DESTROY);
4417 SvRV(&tmpref) = SvREFCNT_inc(sv);
4422 call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
4428 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
4430 del_XRV(SvANY(&tmpref));
4433 if (PL_in_clean_objs)
4434 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
4436 /* DESTROY gave object new lease on life */
4442 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
4443 SvOBJECT_off(sv); /* Curse the object. */
4444 if (SvTYPE(sv) != SVt_PVIO)
4445 --PL_sv_objcount; /* XXX Might want something more general */
4448 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
4451 switch (SvTYPE(sv)) {
4454 IoIFP(sv) != PerlIO_stdin() &&
4455 IoIFP(sv) != PerlIO_stdout() &&
4456 IoIFP(sv) != PerlIO_stderr())
4458 io_close((IO*)sv, FALSE);
4460 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
4461 PerlDir_close(IoDIRP(sv));
4462 IoDIRP(sv) = (DIR*)NULL;
4463 Safefree(IoTOP_NAME(sv));
4464 Safefree(IoFMT_NAME(sv));
4465 Safefree(IoBOTTOM_NAME(sv));
4480 SvREFCNT_dec(LvTARG(sv));
4484 Safefree(GvNAME(sv));
4485 /* cannot decrease stash refcount yet, as we might recursively delete
4486 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
4487 of stash until current sv is completely gone.
4488 -- JohnPC, 27 Mar 1998 */
4489 stash = GvSTASH(sv);
4495 (void)SvOOK_off(sv);
4503 SvREFCNT_dec(SvRV(sv));
4505 else if (SvPVX(sv) && SvLEN(sv))
4506 Safefree(SvPVX(sv));
4507 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
4508 unsharepvn(SvPVX(sv),SvUTF8(sv)?-SvCUR(sv):SvCUR(sv),SvUVX(sv));
4520 switch (SvTYPE(sv)) {
4536 del_XPVIV(SvANY(sv));
4539 del_XPVNV(SvANY(sv));
4542 del_XPVMG(SvANY(sv));
4545 del_XPVLV(SvANY(sv));
4548 del_XPVAV(SvANY(sv));
4551 del_XPVHV(SvANY(sv));
4554 del_XPVCV(SvANY(sv));
4557 del_XPVGV(SvANY(sv));
4558 /* code duplication for increased performance. */
4559 SvFLAGS(sv) &= SVf_BREAK;
4560 SvFLAGS(sv) |= SVTYPEMASK;
4561 /* decrease refcount of the stash that owns this GV, if any */
4563 SvREFCNT_dec(stash);
4564 return; /* not break, SvFLAGS reset already happened */
4566 del_XPVBM(SvANY(sv));
4569 del_XPVFM(SvANY(sv));
4572 del_XPVIO(SvANY(sv));
4575 SvFLAGS(sv) &= SVf_BREAK;
4576 SvFLAGS(sv) |= SVTYPEMASK;
4580 Perl_sv_newref(pTHX_ SV *sv)
4583 ATOMIC_INC(SvREFCNT(sv));
4590 Free the memory used by an SV.
4596 Perl_sv_free(pTHX_ SV *sv)
4598 int refcount_is_zero;
4602 if (SvREFCNT(sv) == 0) {
4603 if (SvFLAGS(sv) & SVf_BREAK)
4605 if (PL_in_clean_all) /* All is fair */
4607 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
4608 /* make sure SvREFCNT(sv)==0 happens very seldom */
4609 SvREFCNT(sv) = (~(U32)0)/2;
4612 if (ckWARN_d(WARN_INTERNAL))
4613 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
4616 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
4617 if (!refcount_is_zero)
4621 if (ckWARN_d(WARN_DEBUGGING))
4622 Perl_warner(aTHX_ WARN_DEBUGGING,
4623 "Attempt to free temp prematurely: SV 0x%"UVxf,
4628 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
4629 /* make sure SvREFCNT(sv)==0 happens very seldom */
4630 SvREFCNT(sv) = (~(U32)0)/2;
4641 Returns the length of the string in the SV. See also C<SvCUR>.
4647 Perl_sv_len(pTHX_ register SV *sv)
4656 len = mg_length(sv);
4658 junk = SvPV(sv, len);
4663 =for apidoc sv_len_utf8
4665 Returns the number of characters in the string in an SV, counting wide
4666 UTF8 bytes as a single character.
4672 Perl_sv_len_utf8(pTHX_ register SV *sv)
4678 return mg_length(sv);
4682 U8 *s = (U8*)SvPV(sv, len);
4684 return Perl_utf8_length(aTHX_ s, s + len);
4689 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4694 I32 uoffset = *offsetp;
4700 start = s = (U8*)SvPV(sv, len);
4702 while (s < send && uoffset--)
4706 *offsetp = s - start;
4710 while (s < send && ulen--)
4720 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4729 s = (U8*)SvPV(sv, len);
4731 Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset");
4732 send = s + *offsetp;
4736 /* Call utf8n_to_uvchr() to validate the sequence */
4737 utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0);
4752 Returns a boolean indicating whether the strings in the two SVs are
4759 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4773 pv1 = SvPV(sv1, cur1);
4780 pv2 = SvPV(sv2, cur2);
4782 /* do not utf8ize the comparands as a side-effect */
4783 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4784 bool is_utf8 = TRUE;
4785 /* UTF-8ness differs */
4786 if (PL_hints & HINT_UTF8_DISTINCT)
4790 /* sv1 is the UTF-8 one , If is equal it must be downgrade-able */
4791 char *pv = (char*)bytes_from_utf8((U8*)pv1, &cur1, &is_utf8);
4796 /* sv2 is the UTF-8 one , If is equal it must be downgrade-able */
4797 char *pv = (char *)bytes_from_utf8((U8*)pv2, &cur2, &is_utf8);
4802 /* Downgrade not possible - cannot be eq */
4808 eq = memEQ(pv1, pv2, cur1);
4819 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4820 string in C<sv1> is less than, equal to, or greater than the string in
4827 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4832 bool pv1tmp = FALSE;
4833 bool pv2tmp = FALSE;
4840 pv1 = SvPV(sv1, cur1);
4847 pv2 = SvPV(sv2, cur2);
4849 /* do not utf8ize the comparands as a side-effect */
4850 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4851 if (PL_hints & HINT_UTF8_DISTINCT)
4852 return SvUTF8(sv1) ? 1 : -1;
4855 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4859 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4865 cmp = cur2 ? -1 : 0;
4869 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4872 cmp = retval < 0 ? -1 : 1;
4873 } else if (cur1 == cur2) {
4876 cmp = cur1 < cur2 ? -1 : 1;
4889 =for apidoc sv_cmp_locale
4891 Compares the strings in two SVs in a locale-aware manner. See
4898 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4900 #ifdef USE_LOCALE_COLLATE
4906 if (PL_collation_standard)
4910 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4912 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4914 if (!pv1 || !len1) {
4925 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4928 return retval < 0 ? -1 : 1;
4931 * When the result of collation is equality, that doesn't mean
4932 * that there are no differences -- some locales exclude some
4933 * characters from consideration. So to avoid false equalities,
4934 * we use the raw string as a tiebreaker.
4940 #endif /* USE_LOCALE_COLLATE */
4942 return sv_cmp(sv1, sv2);
4945 #ifdef USE_LOCALE_COLLATE
4947 * Any scalar variable may carry an 'o' magic that contains the
4948 * scalar data of the variable transformed to such a format that
4949 * a normal memory comparison can be used to compare the data
4950 * according to the locale settings.
4953 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4957 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4958 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4963 Safefree(mg->mg_ptr);
4965 if ((xf = mem_collxfrm(s, len, &xlen))) {
4966 if (SvREADONLY(sv)) {
4969 return xf + sizeof(PL_collation_ix);
4972 sv_magic(sv, 0, 'o', 0, 0);
4973 mg = mg_find(sv, 'o');
4986 if (mg && mg->mg_ptr) {
4988 return mg->mg_ptr + sizeof(PL_collation_ix);
4996 #endif /* USE_LOCALE_COLLATE */
5001 Get a line from the filehandle and store it into the SV, optionally
5002 appending to the currently-stored string.
5008 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
5012 register STDCHAR rslast;
5013 register STDCHAR *bp;
5017 SV_CHECK_THINKFIRST(sv);
5018 (void)SvUPGRADE(sv, SVt_PV);
5022 if (RsSNARF(PL_rs)) {
5026 else if (RsRECORD(PL_rs)) {
5027 I32 recsize, bytesread;
5030 /* Grab the size of the record we're getting */
5031 recsize = SvIV(SvRV(PL_rs));
5032 (void)SvPOK_only(sv); /* Validate pointer */
5033 buffer = SvGROW(sv, recsize + 1);
5036 /* VMS wants read instead of fread, because fread doesn't respect */
5037 /* RMS record boundaries. This is not necessarily a good thing to be */
5038 /* doing, but we've got no other real choice */
5039 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
5041 bytesread = PerlIO_read(fp, buffer, recsize);
5043 SvCUR_set(sv, bytesread);
5044 buffer[bytesread] = '\0';
5045 if (PerlIO_isutf8(fp))
5049 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
5051 else if (RsPARA(PL_rs)) {
5056 /* Get $/ i.e. PL_rs into same encoding as stream wants */
5057 if (PerlIO_isutf8(fp)) {
5058 rsptr = SvPVutf8(PL_rs, rslen);
5061 if (SvUTF8(PL_rs)) {
5062 if (!sv_utf8_downgrade(PL_rs, TRUE)) {
5063 Perl_croak(aTHX_ "Wide character in $/");
5066 rsptr = SvPV(PL_rs, rslen);
5070 rslast = rslen ? rsptr[rslen - 1] : '\0';
5072 if (RsPARA(PL_rs)) { /* have to do this both before and after */
5073 do { /* to make sure file boundaries work right */
5076 i = PerlIO_getc(fp);
5080 PerlIO_ungetc(fp,i);
5086 /* See if we know enough about I/O mechanism to cheat it ! */
5088 /* This used to be #ifdef test - it is made run-time test for ease
5089 of abstracting out stdio interface. One call should be cheap
5090 enough here - and may even be a macro allowing compile
5094 if (PerlIO_fast_gets(fp)) {
5097 * We're going to steal some values from the stdio struct
5098 * and put EVERYTHING in the innermost loop into registers.
5100 register STDCHAR *ptr;
5104 #if defined(VMS) && defined(PERLIO_IS_STDIO)
5105 /* An ungetc()d char is handled separately from the regular
5106 * buffer, so we getc() it back out and stuff it in the buffer.
5108 i = PerlIO_getc(fp);
5109 if (i == EOF) return 0;
5110 *(--((*fp)->_ptr)) = (unsigned char) i;
5114 /* Here is some breathtakingly efficient cheating */
5116 cnt = PerlIO_get_cnt(fp); /* get count into register */
5117 (void)SvPOK_only(sv); /* validate pointer */
5118 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
5119 if (cnt > 80 && SvLEN(sv) > append) {
5120 shortbuffered = cnt - SvLEN(sv) + append + 1;
5121 cnt -= shortbuffered;
5125 /* remember that cnt can be negative */
5126 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
5131 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
5132 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
5133 DEBUG_P(PerlIO_printf(Perl_debug_log,
5134 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
5135 DEBUG_P(PerlIO_printf(Perl_debug_log,
5136 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5137 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5138 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
5143 while (cnt > 0) { /* this | eat */
5145 if ((*bp++ = *ptr++) == rslast) /* really | dust */
5146 goto thats_all_folks; /* screams | sed :-) */
5150 Copy(ptr, bp, cnt, char); /* this | eat */
5151 bp += cnt; /* screams | dust */
5152 ptr += cnt; /* louder | sed :-) */
5157 if (shortbuffered) { /* oh well, must extend */
5158 cnt = shortbuffered;
5160 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
5162 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
5163 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
5167 DEBUG_P(PerlIO_printf(Perl_debug_log,
5168 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
5169 PTR2UV(ptr),(long)cnt));
5170 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
5171 DEBUG_P(PerlIO_printf(Perl_debug_log,
5172 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5173 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5174 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
5175 /* This used to call 'filbuf' in stdio form, but as that behaves like
5176 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
5177 another abstraction. */
5178 i = PerlIO_getc(fp); /* get more characters */
5179 DEBUG_P(PerlIO_printf(Perl_debug_log,
5180 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5181 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5182 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
5183 cnt = PerlIO_get_cnt(fp);
5184 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
5185 DEBUG_P(PerlIO_printf(Perl_debug_log,
5186 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
5188 if (i == EOF) /* all done for ever? */
5189 goto thats_really_all_folks;
5191 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
5193 SvGROW(sv, bpx + cnt + 2);
5194 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
5196 *bp++ = i; /* store character from PerlIO_getc */
5198 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
5199 goto thats_all_folks;
5203 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
5204 memNE((char*)bp - rslen, rsptr, rslen))
5205 goto screamer; /* go back to the fray */
5206 thats_really_all_folks:
5208 cnt += shortbuffered;
5209 DEBUG_P(PerlIO_printf(Perl_debug_log,
5210 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
5211 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
5212 DEBUG_P(PerlIO_printf(Perl_debug_log,
5213 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5214 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5215 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
5217 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
5218 DEBUG_P(PerlIO_printf(Perl_debug_log,
5219 "Screamer: done, len=%ld, string=|%.*s|\n",
5220 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
5225 /*The big, slow, and stupid way */
5228 /* Need to work around EPOC SDK features */
5229 /* On WINS: MS VC5 generates calls to _chkstk, */
5230 /* if a `large' stack frame is allocated */
5231 /* gcc on MARM does not generate calls like these */
5237 register STDCHAR *bpe = buf + sizeof(buf);
5239 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
5240 ; /* keep reading */
5244 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
5245 /* Accomodate broken VAXC compiler, which applies U8 cast to
5246 * both args of ?: operator, causing EOF to change into 255
5248 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
5252 sv_catpvn(sv, (char *) buf, cnt);
5254 sv_setpvn(sv, (char *) buf, cnt);
5256 if (i != EOF && /* joy */
5258 SvCUR(sv) < rslen ||
5259 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
5263 * If we're reading from a TTY and we get a short read,
5264 * indicating that the user hit his EOF character, we need
5265 * to notice it now, because if we try to read from the TTY
5266 * again, the EOF condition will disappear.
5268 * The comparison of cnt to sizeof(buf) is an optimization
5269 * that prevents unnecessary calls to feof().
5273 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
5278 if (RsPARA(PL_rs)) { /* have to do this both before and after */
5279 while (i != EOF) { /* to make sure file boundaries work right */
5280 i = PerlIO_getc(fp);
5282 PerlIO_ungetc(fp,i);
5288 if (PerlIO_isutf8(fp))
5293 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
5300 Auto-increment of the value in the SV.
5306 Perl_sv_inc(pTHX_ register SV *sv)
5315 if (SvTHINKFIRST(sv)) {
5316 if (SvREADONLY(sv)) {
5317 if (PL_curcop != &PL_compiling)
5318 Perl_croak(aTHX_ PL_no_modify);
5322 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
5324 i = PTR2IV(SvRV(sv));
5329 flags = SvFLAGS(sv);
5330 if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) {
5331 /* It's (privately or publicly) a float, but not tested as an
5332 integer, so test it to see. */
5334 flags = SvFLAGS(sv);
5336 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
5337 /* It's publicly an integer, or privately an integer-not-float */
5340 if (SvUVX(sv) == UV_MAX)
5341 sv_setnv(sv, (NV)UV_MAX + 1.0);
5343 (void)SvIOK_only_UV(sv);
5346 if (SvIVX(sv) == IV_MAX)
5347 sv_setuv(sv, (UV)IV_MAX + 1);
5349 (void)SvIOK_only(sv);
5355 if (flags & SVp_NOK) {
5356 (void)SvNOK_only(sv);
5361 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
5362 if ((flags & SVTYPEMASK) < SVt_PVIV)
5363 sv_upgrade(sv, SVt_IV);
5364 (void)SvIOK_only(sv);
5369 while (isALPHA(*d)) d++;
5370 while (isDIGIT(*d)) d++;
5372 #ifdef PERL_PRESERVE_IVUV
5373 /* Got to punt this an an integer if needs be, but we don't issue
5374 warnings. Probably ought to make the sv_iv_please() that does
5375 the conversion if possible, and silently. */
5376 I32 numtype = looks_like_number(sv);
5377 if (numtype && !(numtype & IS_NUMBER_INFINITY)) {
5378 /* Need to try really hard to see if it's an integer.
5379 9.22337203685478e+18 is an integer.
5380 but "9.22337203685478e+18" + 0 is UV=9223372036854779904
5381 so $a="9.22337203685478e+18"; $a+0; $a++
5382 needs to be the same as $a="9.22337203685478e+18"; $a++
5389 /* sv_2iv *should* have made this an NV */
5390 if (flags & SVp_NOK) {
5391 (void)SvNOK_only(sv);
5395 /* I don't think we can get here. Maybe I should assert this
5396 And if we do get here I suspect that sv_setnv will croak. NWC
5398 #if defined(USE_LONG_DOUBLE)
5399 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"PERL_PRIgldbl"\n",
5400 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5402 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%g\n",
5403 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5406 #endif /* PERL_PRESERVE_IVUV */
5407 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0);
5411 while (d >= SvPVX(sv)) {
5419 /* MKS: The original code here died if letters weren't consecutive.
5420 * at least it didn't have to worry about non-C locales. The
5421 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
5422 * arranged in order (although not consecutively) and that only
5423 * [A-Za-z] are accepted by isALPHA in the C locale.
5425 if (*d != 'z' && *d != 'Z') {
5426 do { ++*d; } while (!isALPHA(*d));
5429 *(d--) -= 'z' - 'a';
5434 *(d--) -= 'z' - 'a' + 1;
5438 /* oh,oh, the number grew */
5439 SvGROW(sv, SvCUR(sv) + 2);
5441 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
5452 Auto-decrement of the value in the SV.
5458 Perl_sv_dec(pTHX_ register SV *sv)
5466 if (SvTHINKFIRST(sv)) {
5467 if (SvREADONLY(sv)) {
5468 if (PL_curcop != &PL_compiling)
5469 Perl_croak(aTHX_ PL_no_modify);
5473 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
5475 i = PTR2IV(SvRV(sv));
5480 /* Unlike sv_inc we don't have to worry about string-never-numbers
5481 and keeping them magic. But we mustn't warn on punting */
5482 flags = SvFLAGS(sv);
5483 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
5484 /* It's publicly an integer, or privately an integer-not-float */
5487 if (SvUVX(sv) == 0) {
5488 (void)SvIOK_only(sv);
5492 (void)SvIOK_only_UV(sv);
5496 if (SvIVX(sv) == IV_MIN)
5497 sv_setnv(sv, (NV)IV_MIN - 1.0);
5499 (void)SvIOK_only(sv);
5505 if (flags & SVp_NOK) {
5507 (void)SvNOK_only(sv);
5510 if (!(flags & SVp_POK)) {
5511 if ((flags & SVTYPEMASK) < SVt_PVNV)
5512 sv_upgrade(sv, SVt_NV);
5514 (void)SvNOK_only(sv);
5517 #ifdef PERL_PRESERVE_IVUV
5519 I32 numtype = looks_like_number(sv);
5520 if (numtype && !(numtype & IS_NUMBER_INFINITY)) {
5521 /* Need to try really hard to see if it's an integer.
5522 9.22337203685478e+18 is an integer.
5523 but "9.22337203685478e+18" + 0 is UV=9223372036854779904
5524 so $a="9.22337203685478e+18"; $a+0; $a--
5525 needs to be the same as $a="9.22337203685478e+18"; $a--
5532 /* sv_2iv *should* have made this an NV */
5533 if (flags & SVp_NOK) {
5534 (void)SvNOK_only(sv);
5538 /* I don't think we can get here. Maybe I should assert this
5539 And if we do get here I suspect that sv_setnv will croak. NWC
5541 #if defined(USE_LONG_DOUBLE)
5542 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"PERL_PRIgldbl"\n",
5543 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5545 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%g\n",
5546 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5550 #endif /* PERL_PRESERVE_IVUV */
5551 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
5555 =for apidoc sv_mortalcopy
5557 Creates a new SV which is a copy of the original SV. The new SV is marked
5563 /* Make a string that will exist for the duration of the expression
5564 * evaluation. Actually, it may have to last longer than that, but
5565 * hopefully we won't free it until it has been assigned to a
5566 * permanent location. */
5569 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
5574 sv_setsv(sv,oldstr);
5576 PL_tmps_stack[++PL_tmps_ix] = sv;
5582 =for apidoc sv_newmortal
5584 Creates a new SV which is mortal. The reference count of the SV is set to 1.
5590 Perl_sv_newmortal(pTHX)
5595 SvFLAGS(sv) = SVs_TEMP;
5597 PL_tmps_stack[++PL_tmps_ix] = sv;
5602 =for apidoc sv_2mortal
5604 Marks an SV as mortal. The SV will be destroyed when the current context
5610 /* same thing without the copying */
5613 Perl_sv_2mortal(pTHX_ register SV *sv)
5617 if (SvREADONLY(sv) && SvIMMORTAL(sv))
5620 PL_tmps_stack[++PL_tmps_ix] = sv;
5628 Creates a new SV and copies a string into it. The reference count for the
5629 SV is set to 1. If C<len> is zero, Perl will compute the length using
5630 strlen(). For efficiency, consider using C<newSVpvn> instead.
5636 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
5643 sv_setpvn(sv,s,len);
5648 =for apidoc newSVpvn
5650 Creates a new SV and copies a string into it. The reference count for the
5651 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
5652 string. You are responsible for ensuring that the source string is at least
5659 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
5664 sv_setpvn(sv,s,len);
5669 =for apidoc newSVpvn_share
5671 Creates a new SV and populates it with a string from
5672 the string table. Turns on READONLY and FAKE.
5673 The idea here is that as string table is used for shared hash
5674 keys these strings will have SvPVX == HeKEY and hash lookup
5675 will avoid string compare.
5681 Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash)
5684 bool is_utf8 = FALSE;
5689 if (is_utf8 && !(PL_hints & HINT_UTF8_DISTINCT)) {
5690 STRLEN tmplen = len;
5691 /* See the note in hv.c:hv_fetch() --jhi */
5692 src = (char*)bytes_from_utf8((U8*)src, &tmplen, &is_utf8);
5696 PERL_HASH(hash, src, len);
5698 sv_upgrade(sv, SVt_PVIV);
5699 SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash);
5711 #if defined(PERL_IMPLICIT_CONTEXT)
5713 Perl_newSVpvf_nocontext(const char* pat, ...)
5718 va_start(args, pat);
5719 sv = vnewSVpvf(pat, &args);
5726 =for apidoc newSVpvf
5728 Creates a new SV an initialize it with the string formatted like
5735 Perl_newSVpvf(pTHX_ const char* pat, ...)
5739 va_start(args, pat);
5740 sv = vnewSVpvf(pat, &args);
5746 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
5750 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5757 Creates a new SV and copies a floating point value into it.
5758 The reference count for the SV is set to 1.
5764 Perl_newSVnv(pTHX_ NV n)
5776 Creates a new SV and copies an integer into it. The reference count for the
5783 Perl_newSViv(pTHX_ IV i)
5795 Creates a new SV and copies an unsigned integer into it.
5796 The reference count for the SV is set to 1.
5802 Perl_newSVuv(pTHX_ UV u)
5812 =for apidoc newRV_noinc
5814 Creates an RV wrapper for an SV. The reference count for the original
5815 SV is B<not> incremented.
5821 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5826 sv_upgrade(sv, SVt_RV);
5833 /* newRV_inc is #defined to newRV in sv.h */
5835 Perl_newRV(pTHX_ SV *tmpRef)
5837 return newRV_noinc(SvREFCNT_inc(tmpRef));
5843 Creates a new SV which is an exact duplicate of the original SV.
5848 /* make an exact duplicate of old */
5851 Perl_newSVsv(pTHX_ register SV *old)
5857 if (SvTYPE(old) == SVTYPEMASK) {
5858 if (ckWARN_d(WARN_INTERNAL))
5859 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5874 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5882 char todo[PERL_UCHAR_MAX+1];
5887 if (!*s) { /* reset ?? searches */
5888 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5889 pm->op_pmdynflags &= ~PMdf_USED;
5894 /* reset variables */
5896 if (!HvARRAY(stash))
5899 Zero(todo, 256, char);
5901 i = (unsigned char)*s;
5905 max = (unsigned char)*s++;
5906 for ( ; i <= max; i++) {
5909 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5910 for (entry = HvARRAY(stash)[i];
5912 entry = HeNEXT(entry))
5914 if (!todo[(U8)*HeKEY(entry)])
5916 gv = (GV*)HeVAL(entry);
5918 if (SvTHINKFIRST(sv)) {
5919 if (!SvREADONLY(sv) && SvROK(sv))
5924 if (SvTYPE(sv) >= SVt_PV) {
5926 if (SvPVX(sv) != Nullch)
5933 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5935 #ifdef USE_ENVIRON_ARRAY
5937 environ[0] = Nullch;
5946 Perl_sv_2io(pTHX_ SV *sv)
5952 switch (SvTYPE(sv)) {
5960 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5964 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5966 return sv_2io(SvRV(sv));
5967 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5973 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5980 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5987 return *gvp = Nullgv, Nullcv;
5988 switch (SvTYPE(sv)) {
6007 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
6008 tryAMAGICunDEREF(to_cv);
6011 if (SvTYPE(sv) == SVt_PVCV) {
6020 Perl_croak(aTHX_ "Not a subroutine reference");
6025 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
6031 if (lref && !GvCVu(gv)) {
6034 tmpsv = NEWSV(704,0);
6035 gv_efullname3(tmpsv, gv, Nullch);
6036 /* XXX this is probably not what they think they're getting.
6037 * It has the same effect as "sub name;", i.e. just a forward
6039 newSUB(start_subparse(FALSE, 0),
6040 newSVOP(OP_CONST, 0, tmpsv),
6045 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
6054 Returns true if the SV has a true value by Perl's rules.
6060 Perl_sv_true(pTHX_ register SV *sv)
6066 if ((tXpv = (XPV*)SvANY(sv)) &&
6067 (tXpv->xpv_cur > 1 ||
6068 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
6075 return SvIVX(sv) != 0;
6078 return SvNVX(sv) != 0.0;
6080 return sv_2bool(sv);
6086 Perl_sv_iv(pTHX_ register SV *sv)
6090 return (IV)SvUVX(sv);
6097 Perl_sv_uv(pTHX_ register SV *sv)
6102 return (UV)SvIVX(sv);
6108 Perl_sv_nv(pTHX_ register SV *sv)
6116 Perl_sv_pv(pTHX_ SV *sv)
6123 return sv_2pv(sv, &n_a);
6127 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
6133 return sv_2pv(sv, lp);
6137 =for apidoc sv_pvn_force
6139 Get a sensible string out of the SV somehow.
6145 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
6149 if (SvTHINKFIRST(sv) && !SvROK(sv))
6150 sv_force_normal(sv);
6156 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
6157 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6158 PL_op_name[PL_op->op_type]);
6162 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
6167 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
6168 SvGROW(sv, len + 1);
6169 Move(s,SvPVX(sv),len,char);
6174 SvPOK_on(sv); /* validate pointer */
6176 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
6177 PTR2UV(sv),SvPVX(sv)));
6184 Perl_sv_pvbyte(pTHX_ SV *sv)
6186 sv_utf8_downgrade(sv,0);
6191 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
6193 sv_utf8_downgrade(sv,0);
6194 return sv_pvn(sv,lp);
6198 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
6200 sv_utf8_downgrade(sv,0);
6201 return sv_pvn_force(sv,lp);
6205 Perl_sv_pvutf8(pTHX_ SV *sv)
6207 sv_utf8_upgrade(sv);
6212 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
6214 sv_utf8_upgrade(sv);
6215 return sv_pvn(sv,lp);
6219 =for apidoc sv_pvutf8n_force
6221 Get a sensible UTF8-encoded string out of the SV somehow. See
6228 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
6230 sv_utf8_upgrade(sv);
6231 return sv_pvn_force(sv,lp);
6235 =for apidoc sv_reftype
6237 Returns a string describing what the SV is a reference to.
6243 Perl_sv_reftype(pTHX_ SV *sv, int ob)
6245 if (ob && SvOBJECT(sv))
6246 return HvNAME(SvSTASH(sv));
6248 switch (SvTYPE(sv)) {
6262 case SVt_PVLV: return "LVALUE";
6263 case SVt_PVAV: return "ARRAY";
6264 case SVt_PVHV: return "HASH";
6265 case SVt_PVCV: return "CODE";
6266 case SVt_PVGV: return "GLOB";
6267 case SVt_PVFM: return "FORMAT";
6268 case SVt_PVIO: return "IO";
6269 default: return "UNKNOWN";
6275 =for apidoc sv_isobject
6277 Returns a boolean indicating whether the SV is an RV pointing to a blessed
6278 object. If the SV is not an RV, or if the object is not blessed, then this
6285 Perl_sv_isobject(pTHX_ SV *sv)
6302 Returns a boolean indicating whether the SV is blessed into the specified
6303 class. This does not check for subtypes; use C<sv_derived_from> to verify
6304 an inheritance relationship.
6310 Perl_sv_isa(pTHX_ SV *sv, const char *name)
6322 return strEQ(HvNAME(SvSTASH(sv)), name);
6328 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
6329 it will be upgraded to one. If C<classname> is non-null then the new SV will
6330 be blessed in the specified package. The new SV is returned and its
6331 reference count is 1.
6337 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
6343 SV_CHECK_THINKFIRST(rv);
6346 if (SvTYPE(rv) >= SVt_PVMG) {
6347 U32 refcnt = SvREFCNT(rv);
6351 SvREFCNT(rv) = refcnt;
6354 if (SvTYPE(rv) < SVt_RV)
6355 sv_upgrade(rv, SVt_RV);
6356 else if (SvTYPE(rv) > SVt_RV) {
6357 (void)SvOOK_off(rv);
6358 if (SvPVX(rv) && SvLEN(rv))
6359 Safefree(SvPVX(rv));
6369 HV* stash = gv_stashpv(classname, TRUE);
6370 (void)sv_bless(rv, stash);
6376 =for apidoc sv_setref_pv
6378 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
6379 argument will be upgraded to an RV. That RV will be modified to point to
6380 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
6381 into the SV. The C<classname> argument indicates the package for the
6382 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6383 will be returned and will have a reference count of 1.
6385 Do not use with other Perl types such as HV, AV, SV, CV, because those
6386 objects will become corrupted by the pointer copy process.
6388 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
6394 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
6397 sv_setsv(rv, &PL_sv_undef);
6401 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
6406 =for apidoc sv_setref_iv
6408 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
6409 argument will be upgraded to an RV. That RV will be modified to point to
6410 the new SV. The C<classname> argument indicates the package for the
6411 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6412 will be returned and will have a reference count of 1.
6418 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
6420 sv_setiv(newSVrv(rv,classname), iv);
6425 =for apidoc sv_setref_uv
6427 Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv>
6428 argument will be upgraded to an RV. That RV will be modified to point to
6429 the new SV. The C<classname> argument indicates the package for the
6430 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6431 will be returned and will have a reference count of 1.
6437 Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv)
6439 sv_setuv(newSVrv(rv,classname), uv);
6444 =for apidoc sv_setref_nv
6446 Copies a double into a new SV, optionally blessing the SV. The C<rv>
6447 argument will be upgraded to an RV. That RV will be modified to point to
6448 the new SV. The C<classname> argument indicates the package for the
6449 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6450 will be returned and will have a reference count of 1.
6456 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
6458 sv_setnv(newSVrv(rv,classname), nv);
6463 =for apidoc sv_setref_pvn
6465 Copies a string into a new SV, optionally blessing the SV. The length of the
6466 string must be specified with C<n>. The C<rv> argument will be upgraded to
6467 an RV. That RV will be modified to point to the new SV. The C<classname>
6468 argument indicates the package for the blessing. Set C<classname> to
6469 C<Nullch> to avoid the blessing. The new SV will be returned and will have
6470 a reference count of 1.
6472 Note that C<sv_setref_pv> copies the pointer while this copies the string.
6478 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
6480 sv_setpvn(newSVrv(rv,classname), pv, n);
6485 =for apidoc sv_bless
6487 Blesses an SV into a specified package. The SV must be an RV. The package
6488 must be designated by its stash (see C<gv_stashpv()>). The reference count
6489 of the SV is unaffected.
6495 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
6499 Perl_croak(aTHX_ "Can't bless non-reference value");
6501 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
6502 if (SvREADONLY(tmpRef))
6503 Perl_croak(aTHX_ PL_no_modify);
6504 if (SvOBJECT(tmpRef)) {
6505 if (SvTYPE(tmpRef) != SVt_PVIO)
6507 SvREFCNT_dec(SvSTASH(tmpRef));
6510 SvOBJECT_on(tmpRef);
6511 if (SvTYPE(tmpRef) != SVt_PVIO)
6513 (void)SvUPGRADE(tmpRef, SVt_PVMG);
6514 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
6525 S_sv_unglob(pTHX_ SV *sv)
6529 assert(SvTYPE(sv) == SVt_PVGV);
6534 SvREFCNT_dec(GvSTASH(sv));
6535 GvSTASH(sv) = Nullhv;
6537 sv_unmagic(sv, '*');
6538 Safefree(GvNAME(sv));
6541 /* need to keep SvANY(sv) in the right arena */
6542 xpvmg = new_XPVMG();
6543 StructCopy(SvANY(sv), xpvmg, XPVMG);
6544 del_XPVGV(SvANY(sv));
6547 SvFLAGS(sv) &= ~SVTYPEMASK;
6548 SvFLAGS(sv) |= SVt_PVMG;
6552 =for apidoc sv_unref_flags
6554 Unsets the RV status of the SV, and decrements the reference count of
6555 whatever was being referenced by the RV. This can almost be thought of
6556 as a reversal of C<newSVrv>. The C<cflags> argument can contain
6557 C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented
6558 (otherwise the decrementing is conditional on the reference count being
6559 different from one or the reference being a readonly SV).
6566 Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags)
6570 if (SvWEAKREF(sv)) {
6578 if (SvREFCNT(rv) != 1 || SvREADONLY(rv) || flags) /* SV_IMMEDIATE_UNREF */
6580 else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */
6581 sv_2mortal(rv); /* Schedule for freeing later */
6585 =for apidoc sv_unref
6587 Unsets the RV status of the SV, and decrements the reference count of
6588 whatever was being referenced by the RV. This can almost be thought of
6589 as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
6590 being zero. See C<SvROK_off>.
6596 Perl_sv_unref(pTHX_ SV *sv)
6598 sv_unref_flags(sv, 0);
6602 Perl_sv_taint(pTHX_ SV *sv)
6604 sv_magic((sv), Nullsv, 't', Nullch, 0);
6608 Perl_sv_untaint(pTHX_ SV *sv)
6610 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
6611 MAGIC *mg = mg_find(sv, 't');
6618 Perl_sv_tainted(pTHX_ SV *sv)
6620 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
6621 MAGIC *mg = mg_find(sv, 't');
6622 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
6629 =for apidoc sv_setpviv
6631 Copies an integer into the given SV, also updating its string value.
6632 Does not handle 'set' magic. See C<sv_setpviv_mg>.
6638 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
6640 char buf[TYPE_CHARS(UV)];
6642 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
6644 sv_setpvn(sv, ptr, ebuf - ptr);
6649 =for apidoc sv_setpviv_mg
6651 Like C<sv_setpviv>, but also handles 'set' magic.
6657 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
6659 char buf[TYPE_CHARS(UV)];
6661 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
6663 sv_setpvn(sv, ptr, ebuf - ptr);
6667 #if defined(PERL_IMPLICIT_CONTEXT)
6669 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
6673 va_start(args, pat);
6674 sv_vsetpvf(sv, pat, &args);
6680 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
6684 va_start(args, pat);
6685 sv_vsetpvf_mg(sv, pat, &args);
6691 =for apidoc sv_setpvf
6693 Processes its arguments like C<sprintf> and sets an SV to the formatted
6694 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
6700 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
6703 va_start(args, pat);
6704 sv_vsetpvf(sv, pat, &args);
6709 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
6711 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6715 =for apidoc sv_setpvf_mg
6717 Like C<sv_setpvf>, but also handles 'set' magic.
6723 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
6726 va_start(args, pat);
6727 sv_vsetpvf_mg(sv, pat, &args);
6732 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6734 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6738 #if defined(PERL_IMPLICIT_CONTEXT)
6740 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
6744 va_start(args, pat);
6745 sv_vcatpvf(sv, pat, &args);
6750 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
6754 va_start(args, pat);
6755 sv_vcatpvf_mg(sv, pat, &args);
6761 =for apidoc sv_catpvf
6763 Processes its arguments like C<sprintf> and appends the formatted output
6764 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
6765 typically be called after calling this function to handle 'set' magic.
6771 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
6774 va_start(args, pat);
6775 sv_vcatpvf(sv, pat, &args);
6780 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
6782 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6786 =for apidoc sv_catpvf_mg
6788 Like C<sv_catpvf>, but also handles 'set' magic.
6794 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
6797 va_start(args, pat);
6798 sv_vcatpvf_mg(sv, pat, &args);
6803 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6805 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6810 =for apidoc sv_vsetpvfn
6812 Works like C<vcatpvfn> but copies the text into the SV instead of
6819 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6821 sv_setpvn(sv, "", 0);
6822 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
6826 S_expect_number(pTHX_ char** pattern)
6829 switch (**pattern) {
6830 case '1': case '2': case '3':
6831 case '4': case '5': case '6':
6832 case '7': case '8': case '9':
6833 while (isDIGIT(**pattern))
6834 var = var * 10 + (*(*pattern)++ - '0');
6838 #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern))
6841 =for apidoc sv_vcatpvfn
6843 Processes its arguments like C<vsprintf> and appends the formatted output
6844 to an SV. Uses an array of SVs if the C style variable argument list is
6845 missing (NULL). When running with taint checks enabled, indicates via
6846 C<maybe_tainted> if results are untrustworthy (often due to the use of
6853 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6860 static char nullstr[] = "(null)";
6863 /* no matter what, this is a string now */
6864 (void)SvPV_force(sv, origlen);
6866 /* special-case "", "%s", and "%_" */
6869 if (patlen == 2 && pat[0] == '%') {
6873 char *s = va_arg(*args, char*);
6874 sv_catpv(sv, s ? s : nullstr);
6876 else if (svix < svmax) {
6877 sv_catsv(sv, *svargs);
6878 if (DO_UTF8(*svargs))
6884 argsv = va_arg(*args, SV*);
6885 sv_catsv(sv, argsv);
6890 /* See comment on '_' below */
6895 patend = (char*)pat + patlen;
6896 for (p = (char*)pat; p < patend; p = q) {
6899 bool vectorize = FALSE;
6900 bool vectorarg = FALSE;
6901 bool vec_utf = FALSE;
6907 bool has_precis = FALSE;
6909 bool is_utf = FALSE;
6912 U8 utf8buf[UTF8_MAXLEN+1];
6913 STRLEN esignlen = 0;
6915 char *eptr = Nullch;
6917 /* Times 4: a decimal digit takes more than 3 binary digits.
6918 * NV_DIG: mantissa takes than many decimal digits.
6919 * Plus 32: Playing safe. */
6920 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6921 /* large enough for "%#.#f" --chip */
6922 /* what about long double NVs? --jhi */
6925 U8 *vecstr = Null(U8*);
6937 STRLEN dotstrlen = 1;
6938 I32 efix = 0; /* explicit format parameter index */
6939 I32 ewix = 0; /* explicit width index */
6940 I32 epix = 0; /* explicit precision index */
6941 I32 evix = 0; /* explicit vector index */
6942 bool asterisk = FALSE;
6944 /* echo everything up to the next format specification */
6945 for (q = p; q < patend && *q != '%'; ++q) ;
6947 sv_catpvn(sv, p, q - p);
6954 We allow format specification elements in this order:
6955 \d+\$ explicit format parameter index
6957 \*?(\d+\$)?v vector with optional (optionally specified) arg
6958 \d+|\*(\d+\$)? width using optional (optionally specified) arg
6959 \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg
6961 [%bcdefginopsux_DFOUX] format (mandatory)
6963 if (EXPECT_NUMBER(q, width)) {
7004 if (EXPECT_NUMBER(q, ewix))
7013 if ((vectorarg = asterisk)) {
7023 EXPECT_NUMBER(q, width);
7028 vecsv = va_arg(*args, SV*);
7030 vecsv = (evix ? evix <= svmax : svix < svmax) ?
7031 svargs[ewix ? ewix-1 : svix++] : &PL_sv_undef;
7032 dotstr = SvPVx(vecsv, dotstrlen);
7037 vecsv = va_arg(*args, SV*);
7038 vecstr = (U8*)SvPVx(vecsv,veclen);
7039 vec_utf = DO_UTF8(vecsv);
7041 else if (efix ? efix <= svmax : svix < svmax) {
7042 vecsv = svargs[efix ? efix-1 : svix++];
7043 vecstr = (U8*)SvPVx(vecsv,veclen);
7044 vec_utf = DO_UTF8(vecsv);
7054 i = va_arg(*args, int);
7056 i = (ewix ? ewix <= svmax : svix < svmax) ?
7057 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
7059 width = (i < 0) ? -i : i;
7069 if (EXPECT_NUMBER(q, epix) && *q++ != '$')
7072 i = va_arg(*args, int);
7074 i = (ewix ? ewix <= svmax : svix < svmax)
7075 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
7076 precis = (i < 0) ? 0 : i;
7081 precis = precis * 10 + (*q++ - '0');
7089 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
7100 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
7101 if (*(q + 1) == 'l') { /* lld, llf */
7124 argsv = (efix ? efix <= svmax : svix < svmax) ?
7125 svargs[efix ? efix-1 : svix++] : &PL_sv_undef;
7132 uv = args ? va_arg(*args, int) : SvIVx(argsv);
7134 (!UNI_IS_INVARIANT(uv) && SvUTF8(sv)))
7136 eptr = (char*)utf8buf;
7137 elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf;
7149 eptr = va_arg(*args, char*);
7151 #ifdef MACOS_TRADITIONAL
7152 /* On MacOS, %#s format is used for Pascal strings */
7157 elen = strlen(eptr);
7160 elen = sizeof nullstr - 1;
7164 eptr = SvPVx(argsv, elen);
7165 if (DO_UTF8(argsv)) {
7166 if (has_precis && precis < elen) {
7168 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
7171 if (width) { /* fudge width (can't fudge elen) */
7172 width += elen - sv_len_utf8(argsv);
7181 * The "%_" hack might have to be changed someday,
7182 * if ISO or ANSI decide to use '_' for something.
7183 * So we keep it hidden from users' code.
7187 argsv = va_arg(*args, SV*);
7188 eptr = SvPVx(argsv, elen);
7194 if (has_precis && elen > precis)
7203 uv = PTR2UV(args ? va_arg(*args, void*) : argsv);
7221 iv = (IV)utf8n_to_uvchr(vecstr, veclen, &ulen, 0);
7231 case 'h': iv = (short)va_arg(*args, int); break;
7232 default: iv = va_arg(*args, int); break;
7233 case 'l': iv = va_arg(*args, long); break;
7234 case 'V': iv = va_arg(*args, IV); break;
7236 case 'q': iv = va_arg(*args, Quad_t); break;
7243 case 'h': iv = (short)iv; break;
7245 case 'l': iv = (long)iv; break;
7248 case 'q': iv = (Quad_t)iv; break;
7255 esignbuf[esignlen++] = plus;
7259 esignbuf[esignlen++] = '-';
7301 uv = utf8n_to_uvchr(vecstr, veclen, &ulen, 0);
7311 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
7312 default: uv = va_arg(*args, unsigned); break;
7313 case 'l': uv = va_arg(*args, unsigned long); break;
7314 case 'V': uv = va_arg(*args, UV); break;
7316 case 'q': uv = va_arg(*args, Quad_t); break;
7323 case 'h': uv = (unsigned short)uv; break;
7325 case 'l': uv = (unsigned long)uv; break;
7328 case 'q': uv = (Quad_t)uv; break;
7334 eptr = ebuf + sizeof ebuf;
7340 p = (char*)((c == 'X')
7341 ? "0123456789ABCDEF" : "0123456789abcdef");
7347 esignbuf[esignlen++] = '0';
7348 esignbuf[esignlen++] = c; /* 'x' or 'X' */
7354 *--eptr = '0' + dig;
7356 if (alt && *eptr != '0')
7362 *--eptr = '0' + dig;
7365 esignbuf[esignlen++] = '0';
7366 esignbuf[esignlen++] = 'b';
7369 default: /* it had better be ten or less */
7370 #if defined(PERL_Y2KWARN)
7371 if (ckWARN(WARN_Y2K)) {
7373 char *s = SvPV(sv,n);
7374 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
7375 && (n == 2 || !isDIGIT(s[n-3])))
7377 Perl_warner(aTHX_ WARN_Y2K,
7378 "Possible Y2K bug: %%%c %s",
7379 c, "format string following '19'");
7385 *--eptr = '0' + dig;
7386 } while (uv /= base);
7389 elen = (ebuf + sizeof ebuf) - eptr;
7392 zeros = precis - elen;
7393 else if (precis == 0 && elen == 1 && *eptr == '0')
7398 /* FLOATING POINT */
7401 c = 'f'; /* maybe %F isn't supported here */
7407 /* This is evil, but floating point is even more evil */
7410 nv = args ? va_arg(*args, NV) : SvNVx(argsv);
7413 if (c != 'e' && c != 'E') {
7415 (void)Perl_frexp(nv, &i);
7416 if (i == PERL_INT_MIN)
7417 Perl_die(aTHX_ "panic: frexp");
7419 need = BIT_DIGITS(i);
7421 need += has_precis ? precis : 6; /* known default */
7425 need += 20; /* fudge factor */
7426 if (PL_efloatsize < need) {
7427 Safefree(PL_efloatbuf);
7428 PL_efloatsize = need + 20; /* more fudge */
7429 New(906, PL_efloatbuf, PL_efloatsize, char);
7430 PL_efloatbuf[0] = '\0';
7433 eptr = ebuf + sizeof ebuf;
7436 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
7438 /* Copy the one or more characters in a long double
7439 * format before the 'base' ([efgEFG]) character to
7440 * the format string. */
7441 static char const prifldbl[] = PERL_PRIfldbl;
7442 char const *p = prifldbl + sizeof(prifldbl) - 3;
7443 while (p >= prifldbl) { *--eptr = *p--; }
7448 do { *--eptr = '0' + (base % 10); } while (base /= 10);
7453 do { *--eptr = '0' + (base % 10); } while (base /= 10);
7465 /* No taint. Otherwise we are in the strange situation
7466 * where printf() taints but print($float) doesn't.
7468 (void)sprintf(PL_efloatbuf, eptr, nv);
7470 eptr = PL_efloatbuf;
7471 elen = strlen(PL_efloatbuf);
7478 i = SvCUR(sv) - origlen;
7481 case 'h': *(va_arg(*args, short*)) = i; break;
7482 default: *(va_arg(*args, int*)) = i; break;
7483 case 'l': *(va_arg(*args, long*)) = i; break;
7484 case 'V': *(va_arg(*args, IV*)) = i; break;
7486 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
7491 sv_setuv_mg(argsv, (UV)i);
7492 continue; /* not "break" */
7499 if (!args && ckWARN(WARN_PRINTF) &&
7500 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
7501 SV *msg = sv_newmortal();
7502 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
7503 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
7506 Perl_sv_catpvf(aTHX_ msg,
7507 "\"%%%c\"", c & 0xFF);
7509 Perl_sv_catpvf(aTHX_ msg,
7510 "\"%%\\%03"UVof"\"",
7513 sv_catpv(msg, "end of string");
7514 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
7517 /* output mangled stuff ... */
7523 /* ... right here, because formatting flags should not apply */
7524 SvGROW(sv, SvCUR(sv) + elen + 1);
7526 Copy(eptr, p, elen, char);
7529 SvCUR(sv) = p - SvPVX(sv);
7530 continue; /* not "break" */
7533 have = esignlen + zeros + elen;
7534 need = (have > width ? have : width);
7537 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
7539 if (esignlen && fill == '0') {
7540 for (i = 0; i < esignlen; i++)
7544 memset(p, fill, gap);
7547 if (esignlen && fill != '0') {
7548 for (i = 0; i < esignlen; i++)
7552 for (i = zeros; i; i--)
7556 Copy(eptr, p, elen, char);
7560 memset(p, ' ', gap);
7565 Copy(dotstr, p, dotstrlen, char);
7569 vectorize = FALSE; /* done iterating over vecstr */
7574 SvCUR(sv) = p - SvPVX(sv);
7582 #if defined(USE_ITHREADS)
7584 #if defined(USE_THREADS)
7585 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
7588 #ifndef GpREFCNT_inc
7589 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
7593 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
7594 #define av_dup(s) (AV*)sv_dup((SV*)s)
7595 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
7596 #define hv_dup(s) (HV*)sv_dup((SV*)s)
7597 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
7598 #define cv_dup(s) (CV*)sv_dup((SV*)s)
7599 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
7600 #define io_dup(s) (IO*)sv_dup((SV*)s)
7601 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
7602 #define gv_dup(s) (GV*)sv_dup((SV*)s)
7603 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
7604 #define SAVEPV(p) (p ? savepv(p) : Nullch)
7605 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
7608 Perl_re_dup(pTHX_ REGEXP *r)
7610 /* XXX fix when pmop->op_pmregexp becomes shared */
7611 return ReREFCNT_inc(r);
7615 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
7619 return (PerlIO*)NULL;
7621 /* look for it in the table first */
7622 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
7626 /* create anew and remember what it is */
7627 ret = PerlIO_fdupopen(aTHX_ fp);
7628 ptr_table_store(PL_ptr_table, fp, ret);
7633 Perl_dirp_dup(pTHX_ DIR *dp)
7642 Perl_gp_dup(pTHX_ GP *gp)
7647 /* look for it in the table first */
7648 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
7652 /* create anew and remember what it is */
7653 Newz(0, ret, 1, GP);
7654 ptr_table_store(PL_ptr_table, gp, ret);
7657 ret->gp_refcnt = 0; /* must be before any other dups! */
7658 ret->gp_sv = sv_dup_inc(gp->gp_sv);
7659 ret->gp_io = io_dup_inc(gp->gp_io);
7660 ret->gp_form = cv_dup_inc(gp->gp_form);
7661 ret->gp_av = av_dup_inc(gp->gp_av);
7662 ret->gp_hv = hv_dup_inc(gp->gp_hv);
7663 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
7664 ret->gp_cv = cv_dup_inc(gp->gp_cv);
7665 ret->gp_cvgen = gp->gp_cvgen;
7666 ret->gp_flags = gp->gp_flags;
7667 ret->gp_line = gp->gp_line;
7668 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
7673 Perl_mg_dup(pTHX_ MAGIC *mg)
7675 MAGIC *mgret = (MAGIC*)NULL;
7678 return (MAGIC*)NULL;
7679 /* look for it in the table first */
7680 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
7684 for (; mg; mg = mg->mg_moremagic) {
7686 Newz(0, nmg, 1, MAGIC);
7690 mgprev->mg_moremagic = nmg;
7691 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
7692 nmg->mg_private = mg->mg_private;
7693 nmg->mg_type = mg->mg_type;
7694 nmg->mg_flags = mg->mg_flags;
7695 if (mg->mg_type == 'r') {
7696 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
7699 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
7700 ? sv_dup_inc(mg->mg_obj)
7701 : sv_dup(mg->mg_obj);
7703 nmg->mg_len = mg->mg_len;
7704 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
7705 if (mg->mg_ptr && mg->mg_type != 'g') {
7706 if (mg->mg_len >= 0) {
7707 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
7708 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
7709 AMT *amtp = (AMT*)mg->mg_ptr;
7710 AMT *namtp = (AMT*)nmg->mg_ptr;
7712 for (i = 1; i < NofAMmeth; i++) {
7713 namtp->table[i] = cv_dup_inc(amtp->table[i]);
7717 else if (mg->mg_len == HEf_SVKEY)
7718 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
7726 Perl_ptr_table_new(pTHX)
7729 Newz(0, tbl, 1, PTR_TBL_t);
7732 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
7737 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
7739 PTR_TBL_ENT_t *tblent;
7740 UV hash = PTR2UV(sv);
7742 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
7743 for (; tblent; tblent = tblent->next) {
7744 if (tblent->oldval == sv)
7745 return tblent->newval;
7751 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
7753 PTR_TBL_ENT_t *tblent, **otblent;
7754 /* XXX this may be pessimal on platforms where pointers aren't good
7755 * hash values e.g. if they grow faster in the most significant
7757 UV hash = PTR2UV(oldv);
7761 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
7762 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
7763 if (tblent->oldval == oldv) {
7764 tblent->newval = newv;
7769 Newz(0, tblent, 1, PTR_TBL_ENT_t);
7770 tblent->oldval = oldv;
7771 tblent->newval = newv;
7772 tblent->next = *otblent;
7775 if (i && tbl->tbl_items > tbl->tbl_max)
7776 ptr_table_split(tbl);
7780 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
7782 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
7783 UV oldsize = tbl->tbl_max + 1;
7784 UV newsize = oldsize * 2;
7787 Renew(ary, newsize, PTR_TBL_ENT_t*);
7788 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
7789 tbl->tbl_max = --newsize;
7791 for (i=0; i < oldsize; i++, ary++) {
7792 PTR_TBL_ENT_t **curentp, **entp, *ent;
7795 curentp = ary + oldsize;
7796 for (entp = ary, ent = *ary; ent; ent = *entp) {
7797 if ((newsize & PTR2UV(ent->oldval)) != i) {
7799 ent->next = *curentp;
7810 Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl)
7812 register PTR_TBL_ENT_t **array;
7813 register PTR_TBL_ENT_t *entry;
7814 register PTR_TBL_ENT_t *oentry = Null(PTR_TBL_ENT_t*);
7818 if (!tbl || !tbl->tbl_items) {
7822 array = tbl->tbl_ary;
7829 entry = entry->next;
7833 if (++riter > max) {
7836 entry = array[riter];
7844 Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl)
7849 ptr_table_clear(tbl);
7850 Safefree(tbl->tbl_ary);
7859 S_gv_share(pTHX_ SV *sstr)
7862 SV *sv = &PL_sv_no; /* just need SvREADONLY-ness */
7864 if (GvIO(gv) || GvFORM(gv)) {
7865 GvSHARED_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */
7867 else if (!GvCV(gv)) {
7871 /* CvPADLISTs cannot be shared */
7872 if (!CvXSUB(GvCV(gv))) {
7877 if (!GvSHARED(gv)) {
7879 PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n",
7880 HvNAME(GvSTASH(gv)), GvNAME(gv));
7886 * write attempts will die with
7887 * "Modification of a read-only value attempted"
7893 SvREADONLY_on(GvSV(gv));
7900 SvREADONLY_on(GvAV(gv));
7907 SvREADONLY_on(GvAV(gv));
7910 return sstr; /* he_dup() will SvREFCNT_inc() */
7914 Perl_sv_dup(pTHX_ SV *sstr)
7918 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
7920 /* look for it in the table first */
7921 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
7925 /* create anew and remember what it is */
7927 ptr_table_store(PL_ptr_table, sstr, dstr);
7930 SvFLAGS(dstr) = SvFLAGS(sstr);
7931 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
7932 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7935 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7936 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7937 PL_watch_pvx, SvPVX(sstr));
7940 switch (SvTYPE(sstr)) {
7945 SvANY(dstr) = new_XIV();
7946 SvIVX(dstr) = SvIVX(sstr);
7949 SvANY(dstr) = new_XNV();
7950 SvNVX(dstr) = SvNVX(sstr);
7953 SvANY(dstr) = new_XRV();
7954 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7957 SvANY(dstr) = new_XPV();
7958 SvCUR(dstr) = SvCUR(sstr);
7959 SvLEN(dstr) = SvLEN(sstr);
7961 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7962 else if (SvPVX(sstr) && SvLEN(sstr))
7963 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7965 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7968 SvANY(dstr) = new_XPVIV();
7969 SvCUR(dstr) = SvCUR(sstr);
7970 SvLEN(dstr) = SvLEN(sstr);
7971 SvIVX(dstr) = SvIVX(sstr);
7973 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7974 else if (SvPVX(sstr) && SvLEN(sstr))
7975 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7977 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7980 SvANY(dstr) = new_XPVNV();
7981 SvCUR(dstr) = SvCUR(sstr);
7982 SvLEN(dstr) = SvLEN(sstr);
7983 SvIVX(dstr) = SvIVX(sstr);
7984 SvNVX(dstr) = SvNVX(sstr);
7986 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7987 else if (SvPVX(sstr) && SvLEN(sstr))
7988 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7990 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7993 SvANY(dstr) = new_XPVMG();
7994 SvCUR(dstr) = SvCUR(sstr);
7995 SvLEN(dstr) = SvLEN(sstr);
7996 SvIVX(dstr) = SvIVX(sstr);
7997 SvNVX(dstr) = SvNVX(sstr);
7998 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7999 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8001 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
8002 else if (SvPVX(sstr) && SvLEN(sstr))
8003 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8005 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8008 SvANY(dstr) = new_XPVBM();
8009 SvCUR(dstr) = SvCUR(sstr);
8010 SvLEN(dstr) = SvLEN(sstr);
8011 SvIVX(dstr) = SvIVX(sstr);
8012 SvNVX(dstr) = SvNVX(sstr);
8013 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8014 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8016 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
8017 else if (SvPVX(sstr) && SvLEN(sstr))
8018 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8020 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8021 BmRARE(dstr) = BmRARE(sstr);
8022 BmUSEFUL(dstr) = BmUSEFUL(sstr);
8023 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
8026 SvANY(dstr) = new_XPVLV();
8027 SvCUR(dstr) = SvCUR(sstr);
8028 SvLEN(dstr) = SvLEN(sstr);
8029 SvIVX(dstr) = SvIVX(sstr);
8030 SvNVX(dstr) = SvNVX(sstr);
8031 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8032 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8034 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
8035 else if (SvPVX(sstr) && SvLEN(sstr))
8036 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8038 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8039 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
8040 LvTARGLEN(dstr) = LvTARGLEN(sstr);
8041 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
8042 LvTYPE(dstr) = LvTYPE(sstr);
8045 if (GvSHARED((GV*)sstr)) {
8047 if ((share = gv_share(sstr))) {
8051 PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n",
8052 HvNAME(GvSTASH(share)), GvNAME(share));
8057 SvANY(dstr) = new_XPVGV();
8058 SvCUR(dstr) = SvCUR(sstr);
8059 SvLEN(dstr) = SvLEN(sstr);
8060 SvIVX(dstr) = SvIVX(sstr);
8061 SvNVX(dstr) = SvNVX(sstr);
8062 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8063 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8065 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
8066 else if (SvPVX(sstr) && SvLEN(sstr))
8067 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8069 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8070 GvNAMELEN(dstr) = GvNAMELEN(sstr);
8071 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
8072 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
8073 GvFLAGS(dstr) = GvFLAGS(sstr);
8074 GvGP(dstr) = gp_dup(GvGP(sstr));
8075 (void)GpREFCNT_inc(GvGP(dstr));
8078 SvANY(dstr) = new_XPVIO();
8079 SvCUR(dstr) = SvCUR(sstr);
8080 SvLEN(dstr) = SvLEN(sstr);
8081 SvIVX(dstr) = SvIVX(sstr);
8082 SvNVX(dstr) = SvNVX(sstr);
8083 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8084 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8086 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
8087 else if (SvPVX(sstr) && SvLEN(sstr))
8088 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8090 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8091 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
8092 if (IoOFP(sstr) == IoIFP(sstr))
8093 IoOFP(dstr) = IoIFP(dstr);
8095 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
8096 /* PL_rsfp_filters entries have fake IoDIRP() */
8097 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
8098 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
8100 IoDIRP(dstr) = IoDIRP(sstr);
8101 IoLINES(dstr) = IoLINES(sstr);
8102 IoPAGE(dstr) = IoPAGE(sstr);
8103 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
8104 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
8105 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
8106 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
8107 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
8108 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
8109 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
8110 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
8111 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
8112 IoTYPE(dstr) = IoTYPE(sstr);
8113 IoFLAGS(dstr) = IoFLAGS(sstr);
8116 SvANY(dstr) = new_XPVAV();
8117 SvCUR(dstr) = SvCUR(sstr);
8118 SvLEN(dstr) = SvLEN(sstr);
8119 SvIVX(dstr) = SvIVX(sstr);
8120 SvNVX(dstr) = SvNVX(sstr);
8121 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8122 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8123 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
8124 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
8125 if (AvARRAY((AV*)sstr)) {
8126 SV **dst_ary, **src_ary;
8127 SSize_t items = AvFILLp((AV*)sstr) + 1;
8129 src_ary = AvARRAY((AV*)sstr);
8130 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
8131 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
8132 SvPVX(dstr) = (char*)dst_ary;
8133 AvALLOC((AV*)dstr) = dst_ary;
8134 if (AvREAL((AV*)sstr)) {
8136 *dst_ary++ = sv_dup_inc(*src_ary++);
8140 *dst_ary++ = sv_dup(*src_ary++);
8142 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
8143 while (items-- > 0) {
8144 *dst_ary++ = &PL_sv_undef;
8148 SvPVX(dstr) = Nullch;
8149 AvALLOC((AV*)dstr) = (SV**)NULL;
8153 SvANY(dstr) = new_XPVHV();
8154 SvCUR(dstr) = SvCUR(sstr);
8155 SvLEN(dstr) = SvLEN(sstr);
8156 SvIVX(dstr) = SvIVX(sstr);
8157 SvNVX(dstr) = SvNVX(sstr);
8158 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8159 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8160 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
8161 if (HvARRAY((HV*)sstr)) {
8163 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
8164 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
8165 Newz(0, dxhv->xhv_array,
8166 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
8167 while (i <= sxhv->xhv_max) {
8168 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
8169 !!HvSHAREKEYS(sstr));
8172 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
8175 SvPVX(dstr) = Nullch;
8176 HvEITER((HV*)dstr) = (HE*)NULL;
8178 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
8179 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
8182 SvANY(dstr) = new_XPVFM();
8183 FmLINES(dstr) = FmLINES(sstr);
8187 SvANY(dstr) = new_XPVCV();
8189 SvCUR(dstr) = SvCUR(sstr);
8190 SvLEN(dstr) = SvLEN(sstr);
8191 SvIVX(dstr) = SvIVX(sstr);
8192 SvNVX(dstr) = SvNVX(sstr);
8193 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8194 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8195 if (SvPVX(sstr) && SvLEN(sstr))
8196 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8198 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8199 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
8200 CvSTART(dstr) = CvSTART(sstr);
8201 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
8202 CvXSUB(dstr) = CvXSUB(sstr);
8203 CvXSUBANY(dstr) = CvXSUBANY(sstr);
8204 CvGV(dstr) = gv_dup(CvGV(sstr));
8205 CvDEPTH(dstr) = CvDEPTH(sstr);
8206 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
8207 /* XXX padlists are real, but pretend to be not */
8208 AvREAL_on(CvPADLIST(sstr));
8209 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
8210 AvREAL_off(CvPADLIST(sstr));
8211 AvREAL_off(CvPADLIST(dstr));
8214 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
8215 if (!CvANON(sstr) || CvCLONED(sstr))
8216 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
8218 CvOUTSIDE(dstr) = cv_dup(CvOUTSIDE(sstr));
8219 CvFLAGS(dstr) = CvFLAGS(sstr);
8222 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
8226 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
8233 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
8238 return (PERL_CONTEXT*)NULL;
8240 /* look for it in the table first */
8241 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
8245 /* create anew and remember what it is */
8246 Newz(56, ncxs, max + 1, PERL_CONTEXT);
8247 ptr_table_store(PL_ptr_table, cxs, ncxs);
8250 PERL_CONTEXT *cx = &cxs[ix];
8251 PERL_CONTEXT *ncx = &ncxs[ix];
8252 ncx->cx_type = cx->cx_type;
8253 if (CxTYPE(cx) == CXt_SUBST) {
8254 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
8257 ncx->blk_oldsp = cx->blk_oldsp;
8258 ncx->blk_oldcop = cx->blk_oldcop;
8259 ncx->blk_oldretsp = cx->blk_oldretsp;
8260 ncx->blk_oldmarksp = cx->blk_oldmarksp;
8261 ncx->blk_oldscopesp = cx->blk_oldscopesp;
8262 ncx->blk_oldpm = cx->blk_oldpm;
8263 ncx->blk_gimme = cx->blk_gimme;
8264 switch (CxTYPE(cx)) {
8266 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
8267 ? cv_dup_inc(cx->blk_sub.cv)
8268 : cv_dup(cx->blk_sub.cv));
8269 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
8270 ? av_dup_inc(cx->blk_sub.argarray)
8272 ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray);
8273 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
8274 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
8275 ncx->blk_sub.lval = cx->blk_sub.lval;
8278 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
8279 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
8280 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
8281 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
8282 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
8285 ncx->blk_loop.label = cx->blk_loop.label;
8286 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
8287 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
8288 ncx->blk_loop.next_op = cx->blk_loop.next_op;
8289 ncx->blk_loop.last_op = cx->blk_loop.last_op;
8290 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
8291 ? cx->blk_loop.iterdata
8292 : gv_dup((GV*)cx->blk_loop.iterdata));
8293 ncx->blk_loop.oldcurpad
8294 = (SV**)ptr_table_fetch(PL_ptr_table,
8295 cx->blk_loop.oldcurpad);
8296 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
8297 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
8298 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
8299 ncx->blk_loop.iterix = cx->blk_loop.iterix;
8300 ncx->blk_loop.itermax = cx->blk_loop.itermax;
8303 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
8304 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
8305 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
8306 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
8319 Perl_si_dup(pTHX_ PERL_SI *si)
8324 return (PERL_SI*)NULL;
8326 /* look for it in the table first */
8327 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
8331 /* create anew and remember what it is */
8332 Newz(56, nsi, 1, PERL_SI);
8333 ptr_table_store(PL_ptr_table, si, nsi);
8335 nsi->si_stack = av_dup_inc(si->si_stack);
8336 nsi->si_cxix = si->si_cxix;
8337 nsi->si_cxmax = si->si_cxmax;
8338 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
8339 nsi->si_type = si->si_type;
8340 nsi->si_prev = si_dup(si->si_prev);
8341 nsi->si_next = si_dup(si->si_next);
8342 nsi->si_markoff = si->si_markoff;
8347 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
8348 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
8349 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
8350 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
8351 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
8352 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
8353 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
8354 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
8355 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
8356 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
8357 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
8358 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
8361 #define pv_dup_inc(p) SAVEPV(p)
8362 #define pv_dup(p) SAVEPV(p)
8363 #define svp_dup_inc(p,pp) any_dup(p,pp)
8366 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
8373 /* look for it in the table first */
8374 ret = ptr_table_fetch(PL_ptr_table, v);
8378 /* see if it is part of the interpreter structure */
8379 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
8380 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
8388 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
8390 ANY *ss = proto_perl->Tsavestack;
8391 I32 ix = proto_perl->Tsavestack_ix;
8392 I32 max = proto_perl->Tsavestack_max;
8405 void (*dptr) (void*);
8406 void (*dxptr) (pTHXo_ void*);
8409 Newz(54, nss, max, ANY);
8415 case SAVEt_ITEM: /* normal string */
8416 sv = (SV*)POPPTR(ss,ix);
8417 TOPPTR(nss,ix) = sv_dup_inc(sv);
8418 sv = (SV*)POPPTR(ss,ix);
8419 TOPPTR(nss,ix) = sv_dup_inc(sv);
8421 case SAVEt_SV: /* scalar reference */
8422 sv = (SV*)POPPTR(ss,ix);
8423 TOPPTR(nss,ix) = sv_dup_inc(sv);
8424 gv = (GV*)POPPTR(ss,ix);
8425 TOPPTR(nss,ix) = gv_dup_inc(gv);
8427 case SAVEt_GENERIC_PVREF: /* generic char* */
8428 c = (char*)POPPTR(ss,ix);
8429 TOPPTR(nss,ix) = pv_dup(c);
8430 ptr = POPPTR(ss,ix);
8431 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8433 case SAVEt_GENERIC_SVREF: /* generic sv */
8434 case SAVEt_SVREF: /* scalar reference */
8435 sv = (SV*)POPPTR(ss,ix);
8436 TOPPTR(nss,ix) = sv_dup_inc(sv);
8437 ptr = POPPTR(ss,ix);
8438 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
8440 case SAVEt_AV: /* array reference */
8441 av = (AV*)POPPTR(ss,ix);
8442 TOPPTR(nss,ix) = av_dup_inc(av);
8443 gv = (GV*)POPPTR(ss,ix);
8444 TOPPTR(nss,ix) = gv_dup(gv);
8446 case SAVEt_HV: /* hash reference */
8447 hv = (HV*)POPPTR(ss,ix);
8448 TOPPTR(nss,ix) = hv_dup_inc(hv);
8449 gv = (GV*)POPPTR(ss,ix);
8450 TOPPTR(nss,ix) = gv_dup(gv);
8452 case SAVEt_INT: /* int reference */
8453 ptr = POPPTR(ss,ix);
8454 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8455 intval = (int)POPINT(ss,ix);
8456 TOPINT(nss,ix) = intval;
8458 case SAVEt_LONG: /* long reference */
8459 ptr = POPPTR(ss,ix);
8460 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8461 longval = (long)POPLONG(ss,ix);
8462 TOPLONG(nss,ix) = longval;
8464 case SAVEt_I32: /* I32 reference */
8465 case SAVEt_I16: /* I16 reference */
8466 case SAVEt_I8: /* I8 reference */
8467 ptr = POPPTR(ss,ix);
8468 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8472 case SAVEt_IV: /* IV reference */
8473 ptr = POPPTR(ss,ix);
8474 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8478 case SAVEt_SPTR: /* SV* reference */
8479 ptr = POPPTR(ss,ix);
8480 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8481 sv = (SV*)POPPTR(ss,ix);
8482 TOPPTR(nss,ix) = sv_dup(sv);
8484 case SAVEt_VPTR: /* random* reference */
8485 ptr = POPPTR(ss,ix);
8486 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8487 ptr = POPPTR(ss,ix);
8488 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8490 case SAVEt_PPTR: /* char* reference */
8491 ptr = POPPTR(ss,ix);
8492 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8493 c = (char*)POPPTR(ss,ix);
8494 TOPPTR(nss,ix) = pv_dup(c);
8496 case SAVEt_HPTR: /* HV* reference */
8497 ptr = POPPTR(ss,ix);
8498 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8499 hv = (HV*)POPPTR(ss,ix);
8500 TOPPTR(nss,ix) = hv_dup(hv);
8502 case SAVEt_APTR: /* AV* reference */
8503 ptr = POPPTR(ss,ix);
8504 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8505 av = (AV*)POPPTR(ss,ix);
8506 TOPPTR(nss,ix) = av_dup(av);
8509 gv = (GV*)POPPTR(ss,ix);
8510 TOPPTR(nss,ix) = gv_dup(gv);
8512 case SAVEt_GP: /* scalar reference */
8513 gp = (GP*)POPPTR(ss,ix);
8514 TOPPTR(nss,ix) = gp = gp_dup(gp);
8515 (void)GpREFCNT_inc(gp);
8516 gv = (GV*)POPPTR(ss,ix);
8517 TOPPTR(nss,ix) = gv_dup_inc(c);
8518 c = (char*)POPPTR(ss,ix);
8519 TOPPTR(nss,ix) = pv_dup(c);
8526 sv = (SV*)POPPTR(ss,ix);
8527 TOPPTR(nss,ix) = sv_dup_inc(sv);
8530 ptr = POPPTR(ss,ix);
8531 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
8532 /* these are assumed to be refcounted properly */
8533 switch (((OP*)ptr)->op_type) {
8540 TOPPTR(nss,ix) = ptr;
8545 TOPPTR(nss,ix) = Nullop;
8550 TOPPTR(nss,ix) = Nullop;
8553 c = (char*)POPPTR(ss,ix);
8554 TOPPTR(nss,ix) = pv_dup_inc(c);
8557 longval = POPLONG(ss,ix);
8558 TOPLONG(nss,ix) = longval;
8561 hv = (HV*)POPPTR(ss,ix);
8562 TOPPTR(nss,ix) = hv_dup_inc(hv);
8563 c = (char*)POPPTR(ss,ix);
8564 TOPPTR(nss,ix) = pv_dup_inc(c);
8568 case SAVEt_DESTRUCTOR:
8569 ptr = POPPTR(ss,ix);
8570 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
8571 dptr = POPDPTR(ss,ix);
8572 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
8574 case SAVEt_DESTRUCTOR_X:
8575 ptr = POPPTR(ss,ix);
8576 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
8577 dxptr = POPDXPTR(ss,ix);
8578 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
8580 case SAVEt_REGCONTEXT:
8586 case SAVEt_STACK_POS: /* Position on Perl stack */
8590 case SAVEt_AELEM: /* array element */
8591 sv = (SV*)POPPTR(ss,ix);
8592 TOPPTR(nss,ix) = sv_dup_inc(sv);
8595 av = (AV*)POPPTR(ss,ix);
8596 TOPPTR(nss,ix) = av_dup_inc(av);
8598 case SAVEt_HELEM: /* hash element */
8599 sv = (SV*)POPPTR(ss,ix);
8600 TOPPTR(nss,ix) = sv_dup_inc(sv);
8601 sv = (SV*)POPPTR(ss,ix);
8602 TOPPTR(nss,ix) = sv_dup_inc(sv);
8603 hv = (HV*)POPPTR(ss,ix);
8604 TOPPTR(nss,ix) = hv_dup_inc(hv);
8607 ptr = POPPTR(ss,ix);
8608 TOPPTR(nss,ix) = ptr;
8615 av = (AV*)POPPTR(ss,ix);
8616 TOPPTR(nss,ix) = av_dup(av);
8619 longval = (long)POPLONG(ss,ix);
8620 TOPLONG(nss,ix) = longval;
8621 ptr = POPPTR(ss,ix);
8622 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8623 sv = (SV*)POPPTR(ss,ix);
8624 TOPPTR(nss,ix) = sv_dup(sv);
8627 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
8639 perl_clone(PerlInterpreter *proto_perl, UV flags)
8642 CPerlObj *pPerl = (CPerlObj*)proto_perl;
8645 #ifdef PERL_IMPLICIT_SYS
8646 return perl_clone_using(proto_perl, flags,
8648 proto_perl->IMemShared,
8649 proto_perl->IMemParse,
8659 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
8660 struct IPerlMem* ipM, struct IPerlMem* ipMS,
8661 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
8662 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
8663 struct IPerlDir* ipD, struct IPerlSock* ipS,
8664 struct IPerlProc* ipP)
8666 /* XXX many of the string copies here can be optimized if they're
8667 * constants; they need to be allocated as common memory and just
8668 * their pointers copied. */
8672 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
8674 PERL_SET_THX(pPerl);
8675 # else /* !PERL_OBJECT */
8676 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
8677 PERL_SET_THX(my_perl);
8680 memset(my_perl, 0xab, sizeof(PerlInterpreter));
8686 # else /* !DEBUGGING */
8687 Zero(my_perl, 1, PerlInterpreter);
8688 # endif /* DEBUGGING */
8692 PL_MemShared = ipMS;
8700 # endif /* PERL_OBJECT */
8701 #else /* !PERL_IMPLICIT_SYS */
8703 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
8704 PERL_SET_THX(my_perl);
8707 memset(my_perl, 0xab, sizeof(PerlInterpreter));
8713 # else /* !DEBUGGING */
8714 Zero(my_perl, 1, PerlInterpreter);
8715 # endif /* DEBUGGING */
8716 #endif /* PERL_IMPLICIT_SYS */
8719 PL_xiv_arenaroot = NULL;
8721 PL_xnv_arenaroot = NULL;
8723 PL_xrv_arenaroot = NULL;
8725 PL_xpv_arenaroot = NULL;
8727 PL_xpviv_arenaroot = NULL;
8728 PL_xpviv_root = NULL;
8729 PL_xpvnv_arenaroot = NULL;
8730 PL_xpvnv_root = NULL;
8731 PL_xpvcv_arenaroot = NULL;
8732 PL_xpvcv_root = NULL;
8733 PL_xpvav_arenaroot = NULL;
8734 PL_xpvav_root = NULL;
8735 PL_xpvhv_arenaroot = NULL;
8736 PL_xpvhv_root = NULL;
8737 PL_xpvmg_arenaroot = NULL;
8738 PL_xpvmg_root = NULL;
8739 PL_xpvlv_arenaroot = NULL;
8740 PL_xpvlv_root = NULL;
8741 PL_xpvbm_arenaroot = NULL;
8742 PL_xpvbm_root = NULL;
8743 PL_he_arenaroot = NULL;
8745 PL_nice_chunk = NULL;
8746 PL_nice_chunk_size = 0;
8749 PL_sv_root = Nullsv;
8750 PL_sv_arenaroot = Nullsv;
8752 PL_debug = proto_perl->Idebug;
8754 /* create SV map for pointer relocation */
8755 PL_ptr_table = ptr_table_new();
8757 /* initialize these special pointers as early as possible */
8758 SvANY(&PL_sv_undef) = NULL;
8759 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
8760 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
8761 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
8764 SvUPGRADE(&PL_sv_no, SVt_PVNV);
8766 SvANY(&PL_sv_no) = new_XPVNV();
8768 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
8769 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
8770 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
8771 SvCUR(&PL_sv_no) = 0;
8772 SvLEN(&PL_sv_no) = 1;
8773 SvNVX(&PL_sv_no) = 0;
8774 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
8777 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
8779 SvANY(&PL_sv_yes) = new_XPVNV();
8781 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
8782 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
8783 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
8784 SvCUR(&PL_sv_yes) = 1;
8785 SvLEN(&PL_sv_yes) = 2;
8786 SvNVX(&PL_sv_yes) = 1;
8787 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
8789 /* create shared string table */
8790 PL_strtab = newHV();
8791 HvSHAREKEYS_off(PL_strtab);
8792 hv_ksplit(PL_strtab, 512);
8793 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
8795 PL_compiling = proto_perl->Icompiling;
8796 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
8797 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
8798 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
8799 if (!specialWARN(PL_compiling.cop_warnings))
8800 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
8801 if (!specialCopIO(PL_compiling.cop_io))
8802 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
8803 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
8805 /* pseudo environmental stuff */
8806 PL_origargc = proto_perl->Iorigargc;
8808 New(0, PL_origargv, i+1, char*);
8809 PL_origargv[i] = '\0';
8811 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
8813 PL_envgv = gv_dup(proto_perl->Ienvgv);
8814 PL_incgv = gv_dup(proto_perl->Iincgv);
8815 PL_hintgv = gv_dup(proto_perl->Ihintgv);
8816 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
8817 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
8818 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
8821 PL_minus_c = proto_perl->Iminus_c;
8822 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
8823 PL_localpatches = proto_perl->Ilocalpatches;
8824 PL_splitstr = proto_perl->Isplitstr;
8825 PL_preprocess = proto_perl->Ipreprocess;
8826 PL_minus_n = proto_perl->Iminus_n;
8827 PL_minus_p = proto_perl->Iminus_p;
8828 PL_minus_l = proto_perl->Iminus_l;
8829 PL_minus_a = proto_perl->Iminus_a;
8830 PL_minus_F = proto_perl->Iminus_F;
8831 PL_doswitches = proto_perl->Idoswitches;
8832 PL_dowarn = proto_perl->Idowarn;
8833 PL_doextract = proto_perl->Idoextract;
8834 PL_sawampersand = proto_perl->Isawampersand;
8835 PL_unsafe = proto_perl->Iunsafe;
8836 PL_inplace = SAVEPV(proto_perl->Iinplace);
8837 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
8838 PL_perldb = proto_perl->Iperldb;
8839 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
8841 /* magical thingies */
8842 /* XXX time(&PL_basetime) when asked for? */
8843 PL_basetime = proto_perl->Ibasetime;
8844 PL_formfeed = sv_dup(proto_perl->Iformfeed);
8846 PL_maxsysfd = proto_perl->Imaxsysfd;
8847 PL_multiline = proto_perl->Imultiline;
8848 PL_statusvalue = proto_perl->Istatusvalue;
8850 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
8853 /* shortcuts to various I/O objects */
8854 PL_stdingv = gv_dup(proto_perl->Istdingv);
8855 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
8856 PL_defgv = gv_dup(proto_perl->Idefgv);
8857 PL_argvgv = gv_dup(proto_perl->Iargvgv);
8858 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
8859 PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack);
8861 /* shortcuts to regexp stuff */
8862 PL_replgv = gv_dup(proto_perl->Ireplgv);
8864 /* shortcuts to misc objects */
8865 PL_errgv = gv_dup(proto_perl->Ierrgv);
8867 /* shortcuts to debugging objects */
8868 PL_DBgv = gv_dup(proto_perl->IDBgv);
8869 PL_DBline = gv_dup(proto_perl->IDBline);
8870 PL_DBsub = gv_dup(proto_perl->IDBsub);
8871 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
8872 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
8873 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
8874 PL_lineary = av_dup(proto_perl->Ilineary);
8875 PL_dbargs = av_dup(proto_perl->Idbargs);
8878 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
8879 PL_curstash = hv_dup(proto_perl->Tcurstash);
8880 PL_debstash = hv_dup(proto_perl->Idebstash);
8881 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
8882 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
8884 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
8885 PL_endav = av_dup_inc(proto_perl->Iendav);
8886 PL_checkav = av_dup_inc(proto_perl->Icheckav);
8887 PL_initav = av_dup_inc(proto_perl->Iinitav);
8889 PL_sub_generation = proto_perl->Isub_generation;
8891 /* funky return mechanisms */
8892 PL_forkprocess = proto_perl->Iforkprocess;
8894 /* subprocess state */
8895 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
8897 /* internal state */
8898 PL_tainting = proto_perl->Itainting;
8899 PL_maxo = proto_perl->Imaxo;
8900 if (proto_perl->Iop_mask)
8901 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
8903 PL_op_mask = Nullch;
8905 /* current interpreter roots */
8906 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
8907 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
8908 PL_main_start = proto_perl->Imain_start;
8909 PL_eval_root = proto_perl->Ieval_root;
8910 PL_eval_start = proto_perl->Ieval_start;
8912 /* runtime control stuff */
8913 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
8914 PL_copline = proto_perl->Icopline;
8916 PL_filemode = proto_perl->Ifilemode;
8917 PL_lastfd = proto_perl->Ilastfd;
8918 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
8921 PL_gensym = proto_perl->Igensym;
8922 PL_preambled = proto_perl->Ipreambled;
8923 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
8924 PL_laststatval = proto_perl->Ilaststatval;
8925 PL_laststype = proto_perl->Ilaststype;
8926 PL_mess_sv = Nullsv;
8928 PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv);
8929 PL_ofmt = SAVEPV(proto_perl->Iofmt);
8931 /* interpreter atexit processing */
8932 PL_exitlistlen = proto_perl->Iexitlistlen;
8933 if (PL_exitlistlen) {
8934 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8935 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8938 PL_exitlist = (PerlExitListEntry*)NULL;
8939 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
8941 PL_profiledata = NULL;
8942 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
8943 /* PL_rsfp_filters entries have fake IoDIRP() */
8944 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
8946 PL_compcv = cv_dup(proto_perl->Icompcv);
8947 PL_comppad = av_dup(proto_perl->Icomppad);
8948 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
8949 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
8950 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8951 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8952 proto_perl->Tcurpad);
8954 #ifdef HAVE_INTERP_INTERN
8955 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8958 /* more statics moved here */
8959 PL_generation = proto_perl->Igeneration;
8960 PL_DBcv = cv_dup(proto_perl->IDBcv);
8962 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8963 PL_in_clean_all = proto_perl->Iin_clean_all;
8965 PL_uid = proto_perl->Iuid;
8966 PL_euid = proto_perl->Ieuid;
8967 PL_gid = proto_perl->Igid;
8968 PL_egid = proto_perl->Iegid;
8969 PL_nomemok = proto_perl->Inomemok;
8970 PL_an = proto_perl->Ian;
8971 PL_cop_seqmax = proto_perl->Icop_seqmax;
8972 PL_op_seqmax = proto_perl->Iop_seqmax;
8973 PL_evalseq = proto_perl->Ievalseq;
8974 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8975 PL_origalen = proto_perl->Iorigalen;
8976 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8977 PL_osname = SAVEPV(proto_perl->Iosname);
8978 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8979 PL_sighandlerp = proto_perl->Isighandlerp;
8982 PL_runops = proto_perl->Irunops;
8984 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8987 PL_cshlen = proto_perl->Icshlen;
8988 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8991 PL_lex_state = proto_perl->Ilex_state;
8992 PL_lex_defer = proto_perl->Ilex_defer;
8993 PL_lex_expect = proto_perl->Ilex_expect;
8994 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8995 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8996 PL_lex_starts = proto_perl->Ilex_starts;
8997 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8998 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8999 PL_lex_op = proto_perl->Ilex_op;
9000 PL_lex_inpat = proto_perl->Ilex_inpat;
9001 PL_lex_inwhat = proto_perl->Ilex_inwhat;
9002 PL_lex_brackets = proto_perl->Ilex_brackets;
9003 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
9004 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
9005 PL_lex_casemods = proto_perl->Ilex_casemods;
9006 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
9007 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
9009 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
9010 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
9011 PL_nexttoke = proto_perl->Inexttoke;
9013 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
9014 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
9015 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
9016 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
9017 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
9018 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
9019 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
9020 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
9021 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
9022 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
9023 PL_pending_ident = proto_perl->Ipending_ident;
9024 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
9026 PL_expect = proto_perl->Iexpect;
9028 PL_multi_start = proto_perl->Imulti_start;
9029 PL_multi_end = proto_perl->Imulti_end;
9030 PL_multi_open = proto_perl->Imulti_open;
9031 PL_multi_close = proto_perl->Imulti_close;
9033 PL_error_count = proto_perl->Ierror_count;
9034 PL_subline = proto_perl->Isubline;
9035 PL_subname = sv_dup_inc(proto_perl->Isubname);
9037 PL_min_intro_pending = proto_perl->Imin_intro_pending;
9038 PL_max_intro_pending = proto_perl->Imax_intro_pending;
9039 PL_padix = proto_perl->Ipadix;
9040 PL_padix_floor = proto_perl->Ipadix_floor;
9041 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
9043 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
9044 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
9045 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
9046 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
9047 PL_last_lop_op = proto_perl->Ilast_lop_op;
9048 PL_in_my = proto_perl->Iin_my;
9049 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
9051 PL_cryptseen = proto_perl->Icryptseen;
9054 PL_hints = proto_perl->Ihints;
9056 PL_amagic_generation = proto_perl->Iamagic_generation;
9058 #ifdef USE_LOCALE_COLLATE
9059 PL_collation_ix = proto_perl->Icollation_ix;
9060 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
9061 PL_collation_standard = proto_perl->Icollation_standard;
9062 PL_collxfrm_base = proto_perl->Icollxfrm_base;
9063 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
9064 #endif /* USE_LOCALE_COLLATE */
9066 #ifdef USE_LOCALE_NUMERIC
9067 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
9068 PL_numeric_standard = proto_perl->Inumeric_standard;
9069 PL_numeric_local = proto_perl->Inumeric_local;
9070 PL_numeric_radix = sv_dup_inc(proto_perl->Inumeric_radix);
9071 #endif /* !USE_LOCALE_NUMERIC */
9073 /* utf8 character classes */
9074 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
9075 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
9076 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
9077 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
9078 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
9079 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
9080 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
9081 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
9082 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
9083 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
9084 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
9085 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
9086 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
9087 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
9088 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
9089 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
9090 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
9093 PL_last_swash_hv = Nullhv; /* reinits on demand */
9094 PL_last_swash_klen = 0;
9095 PL_last_swash_key[0]= '\0';
9096 PL_last_swash_tmps = (U8*)NULL;
9097 PL_last_swash_slen = 0;
9099 /* perly.c globals */
9100 PL_yydebug = proto_perl->Iyydebug;
9101 PL_yynerrs = proto_perl->Iyynerrs;
9102 PL_yyerrflag = proto_perl->Iyyerrflag;
9103 PL_yychar = proto_perl->Iyychar;
9104 PL_yyval = proto_perl->Iyyval;
9105 PL_yylval = proto_perl->Iyylval;
9107 PL_glob_index = proto_perl->Iglob_index;
9108 PL_srand_called = proto_perl->Isrand_called;
9109 PL_uudmap['M'] = 0; /* reinits on demand */
9110 PL_bitcount = Nullch; /* reinits on demand */
9112 if (proto_perl->Ipsig_pend) {
9113 Newz(0, PL_psig_pend, SIG_SIZE, int);
9116 PL_psig_pend = (int*)NULL;
9119 if (proto_perl->Ipsig_ptr) {
9120 Newz(0, PL_psig_ptr, SIG_SIZE, SV*);
9121 Newz(0, PL_psig_name, SIG_SIZE, SV*);
9122 for (i = 1; i < SIG_SIZE; i++) {
9123 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
9124 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
9128 PL_psig_ptr = (SV**)NULL;
9129 PL_psig_name = (SV**)NULL;
9132 /* thrdvar.h stuff */
9134 if (flags & CLONEf_COPY_STACKS) {
9135 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
9136 PL_tmps_ix = proto_perl->Ttmps_ix;
9137 PL_tmps_max = proto_perl->Ttmps_max;
9138 PL_tmps_floor = proto_perl->Ttmps_floor;
9139 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
9141 while (i <= PL_tmps_ix) {
9142 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
9146 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
9147 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
9148 Newz(54, PL_markstack, i, I32);
9149 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
9150 - proto_perl->Tmarkstack);
9151 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
9152 - proto_perl->Tmarkstack);
9153 Copy(proto_perl->Tmarkstack, PL_markstack,
9154 PL_markstack_ptr - PL_markstack + 1, I32);
9156 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
9157 * NOTE: unlike the others! */
9158 PL_scopestack_ix = proto_perl->Tscopestack_ix;
9159 PL_scopestack_max = proto_perl->Tscopestack_max;
9160 Newz(54, PL_scopestack, PL_scopestack_max, I32);
9161 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
9163 /* next push_return() sets PL_retstack[PL_retstack_ix]
9164 * NOTE: unlike the others! */
9165 PL_retstack_ix = proto_perl->Tretstack_ix;
9166 PL_retstack_max = proto_perl->Tretstack_max;
9167 Newz(54, PL_retstack, PL_retstack_max, OP*);
9168 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
9170 /* NOTE: si_dup() looks at PL_markstack */
9171 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
9173 /* PL_curstack = PL_curstackinfo->si_stack; */
9174 PL_curstack = av_dup(proto_perl->Tcurstack);
9175 PL_mainstack = av_dup(proto_perl->Tmainstack);
9177 /* next PUSHs() etc. set *(PL_stack_sp+1) */
9178 PL_stack_base = AvARRAY(PL_curstack);
9179 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
9180 - proto_perl->Tstack_base);
9181 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
9183 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
9184 * NOTE: unlike the others! */
9185 PL_savestack_ix = proto_perl->Tsavestack_ix;
9186 PL_savestack_max = proto_perl->Tsavestack_max;
9187 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
9188 PL_savestack = ss_dup(proto_perl);
9192 ENTER; /* perl_destruct() wants to LEAVE; */
9195 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
9196 PL_top_env = &PL_start_env;
9198 PL_op = proto_perl->Top;
9201 PL_Xpv = (XPV*)NULL;
9202 PL_na = proto_perl->Tna;
9204 PL_statbuf = proto_perl->Tstatbuf;
9205 PL_statcache = proto_perl->Tstatcache;
9206 PL_statgv = gv_dup(proto_perl->Tstatgv);
9207 PL_statname = sv_dup_inc(proto_perl->Tstatname);
9209 PL_timesbuf = proto_perl->Ttimesbuf;
9212 PL_tainted = proto_perl->Ttainted;
9213 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
9214 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
9215 PL_rs = sv_dup_inc(proto_perl->Trs);
9216 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
9217 PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv);
9218 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
9219 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
9220 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
9221 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
9222 PL_formtarget = sv_dup(proto_perl->Tformtarget);
9224 PL_restartop = proto_perl->Trestartop;
9225 PL_in_eval = proto_perl->Tin_eval;
9226 PL_delaymagic = proto_perl->Tdelaymagic;
9227 PL_dirty = proto_perl->Tdirty;
9228 PL_localizing = proto_perl->Tlocalizing;
9230 #ifdef PERL_FLEXIBLE_EXCEPTIONS
9231 PL_protect = proto_perl->Tprotect;
9233 PL_errors = sv_dup_inc(proto_perl->Terrors);
9234 PL_av_fetch_sv = Nullsv;
9235 PL_hv_fetch_sv = Nullsv;
9236 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
9237 PL_modcount = proto_perl->Tmodcount;
9238 PL_lastgotoprobe = Nullop;
9239 PL_dumpindent = proto_perl->Tdumpindent;
9241 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
9242 PL_sortstash = hv_dup(proto_perl->Tsortstash);
9243 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
9244 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
9245 PL_sortcxix = proto_perl->Tsortcxix;
9246 PL_efloatbuf = Nullch; /* reinits on demand */
9247 PL_efloatsize = 0; /* reinits on demand */
9251 PL_screamfirst = NULL;
9252 PL_screamnext = NULL;
9253 PL_maxscream = -1; /* reinits on demand */
9254 PL_lastscream = Nullsv;
9256 PL_watchaddr = NULL;
9257 PL_watchok = Nullch;
9259 PL_regdummy = proto_perl->Tregdummy;
9260 PL_regcomp_parse = Nullch;
9261 PL_regxend = Nullch;
9262 PL_regcode = (regnode*)NULL;
9265 PL_regprecomp = Nullch;
9270 PL_seen_zerolen = 0;
9272 PL_regcomp_rx = (regexp*)NULL;
9274 PL_colorset = 0; /* reinits PL_colors[] */
9275 /*PL_colors[6] = {0,0,0,0,0,0};*/
9276 PL_reg_whilem_seen = 0;
9277 PL_reginput = Nullch;
9280 PL_regstartp = (I32*)NULL;
9281 PL_regendp = (I32*)NULL;
9282 PL_reglastparen = (U32*)NULL;
9283 PL_regtill = Nullch;
9285 PL_reg_start_tmp = (char**)NULL;
9286 PL_reg_start_tmpl = 0;
9287 PL_regdata = (struct reg_data*)NULL;
9290 PL_reg_eval_set = 0;
9292 PL_regprogram = (regnode*)NULL;
9294 PL_regcc = (CURCUR*)NULL;
9295 PL_reg_call_cc = (struct re_cc_state*)NULL;
9296 PL_reg_re = (regexp*)NULL;
9297 PL_reg_ganch = Nullch;
9299 PL_reg_magic = (MAGIC*)NULL;
9301 PL_reg_oldcurpm = (PMOP*)NULL;
9302 PL_reg_curpm = (PMOP*)NULL;
9303 PL_reg_oldsaved = Nullch;
9304 PL_reg_oldsavedlen = 0;
9306 PL_reg_leftiter = 0;
9307 PL_reg_poscache = Nullch;
9308 PL_reg_poscache_size= 0;
9310 /* RE engine - function pointers */
9311 PL_regcompp = proto_perl->Tregcompp;
9312 PL_regexecp = proto_perl->Tregexecp;
9313 PL_regint_start = proto_perl->Tregint_start;
9314 PL_regint_string = proto_perl->Tregint_string;
9315 PL_regfree = proto_perl->Tregfree;
9317 PL_reginterp_cnt = 0;
9318 PL_reg_starttry = 0;
9320 if (!(flags & CLONEf_KEEP_PTR_TABLE)) {
9321 ptr_table_free(PL_ptr_table);
9322 PL_ptr_table = NULL;
9326 return (PerlInterpreter*)pPerl;
9332 #else /* !USE_ITHREADS */
9338 #endif /* USE_ITHREADS */
9341 do_report_used(pTHXo_ SV *sv)
9343 if (SvTYPE(sv) != SVTYPEMASK) {
9344 PerlIO_printf(Perl_debug_log, "****\n");
9350 do_clean_objs(pTHXo_ SV *sv)
9354 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
9355 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
9356 if (SvWEAKREF(sv)) {
9367 /* XXX Might want to check arrays, etc. */
9370 #ifndef DISABLE_DESTRUCTOR_KLUDGE
9372 do_clean_named_objs(pTHXo_ SV *sv)
9374 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
9375 if ( SvOBJECT(GvSV(sv)) ||
9376 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
9377 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
9378 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
9379 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
9381 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
9389 do_clean_all(pTHXo_ SV *sv)
9391 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
9392 SvFLAGS(sv) |= SVf_BREAK;