3 * Copyright (c) 1991-2000, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
19 #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)
21 static void do_report_used(pTHXo_ SV *sv);
22 static void do_clean_objs(pTHXo_ SV *sv);
23 #ifndef DISABLE_DESTRUCTOR_KLUDGE
24 static void do_clean_named_objs(pTHXo_ SV *sv);
26 static void do_clean_all(pTHXo_ SV *sv);
29 * "A time to plant, and a time to uproot what was planted..."
34 SvANY(p) = (void *)PL_sv_root; \
35 SvFLAGS(p) = SVTYPEMASK; \
40 /* sv_mutex must be held while calling uproot_SV() */
41 #define uproot_SV(p) \
44 PL_sv_root = (SV*)SvANY(p); \
66 if (PL_debug & 32768) \
76 if (PL_debug & 32768) {
81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
83 svend = &sva[SvREFCNT(sva)];
84 if (p >= sv && p < svend)
88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
90 "Attempt to free non-arena SV: 0x%"UVxf,
98 #else /* ! DEBUGGING */
100 #define del_SV(p) plant_SV(p)
102 #endif /* DEBUGGING */
105 Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
110 Zero(ptr, size, char);
112 /* The first SV in an arena isn't an SV. */
113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
120 svend = &sva[SvREFCNT(sva) - 1];
123 SvANY(sv) = (void *)(SV*)(sv + 1);
124 SvFLAGS(sv) = SVTYPEMASK;
128 SvFLAGS(sv) = SVTYPEMASK;
131 /* sv_mutex must be held while calling more_sv() */
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
151 S_visit(pTHX_ SVFUNC_t f)
157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
158 svend = &sva[SvREFCNT(sva)];
159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
167 Perl_sv_report_used(pTHX)
169 visit(do_report_used);
173 Perl_sv_clean_objs(pTHX)
175 PL_in_clean_objs = TRUE;
176 visit(do_clean_objs);
177 #ifndef DISABLE_DESTRUCTOR_KLUDGE
178 /* some barnacles may yet remain, clinging to typeglobs */
179 visit(do_clean_named_objs);
181 PL_in_clean_objs = FALSE;
185 Perl_sv_clean_all(pTHX)
187 PL_in_clean_all = TRUE;
189 PL_in_clean_all = FALSE;
193 Perl_sv_free_arenas(pTHX)
197 XPV *arena, *arenanext;
199 /* Free arenas here, but be careful about fake ones. (We assume
200 contiguity of the fake ones with the corresponding real ones.) */
202 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
203 svanext = (SV*) SvANY(sva);
204 while (svanext && SvFAKE(svanext))
205 svanext = (SV*) SvANY(svanext);
208 Safefree((void *)sva);
211 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
212 arenanext = (XPV*)arena->xpv_pv;
215 PL_xiv_arenaroot = 0;
217 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
221 PL_xnv_arenaroot = 0;
223 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
227 PL_xrv_arenaroot = 0;
229 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
233 PL_xpv_arenaroot = 0;
235 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
239 PL_xpviv_arenaroot = 0;
241 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
245 PL_xpvnv_arenaroot = 0;
247 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
251 PL_xpvcv_arenaroot = 0;
253 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
257 PL_xpvav_arenaroot = 0;
259 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
263 PL_xpvhv_arenaroot = 0;
265 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
269 PL_xpvmg_arenaroot = 0;
271 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
275 PL_xpvlv_arenaroot = 0;
277 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
281 PL_xpvbm_arenaroot = 0;
283 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
290 Safefree(PL_nice_chunk);
291 PL_nice_chunk = Nullch;
292 PL_nice_chunk_size = 0;
298 Perl_report_uninit(pTHX)
301 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
302 " in ", PL_op_desc[PL_op->op_type]);
304 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
316 * See comment in more_xiv() -- RAM.
318 PL_xiv_root = *(IV**)xiv;
320 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
324 S_del_xiv(pTHX_ XPVIV *p)
326 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
328 *(IV**)xiv = PL_xiv_root;
339 New(705, ptr, 1008/sizeof(XPV), XPV);
340 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
341 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
344 xivend = &xiv[1008 / sizeof(IV) - 1];
345 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
347 while (xiv < xivend) {
348 *(IV**)xiv = (IV *)(xiv + 1);
362 PL_xnv_root = *(NV**)xnv;
364 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
368 S_del_xnv(pTHX_ XPVNV *p)
370 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
372 *(NV**)xnv = PL_xnv_root;
383 New(711, ptr, 1008/sizeof(XPV), XPV);
384 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
385 PL_xnv_arenaroot = ptr;
388 xnvend = &xnv[1008 / sizeof(NV) - 1];
389 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
391 while (xnv < xnvend) {
392 *(NV**)xnv = (NV*)(xnv + 1);
406 PL_xrv_root = (XRV*)xrv->xrv_rv;
412 S_del_xrv(pTHX_ XRV *p)
415 p->xrv_rv = (SV*)PL_xrv_root;
424 register XRV* xrvend;
426 New(712, ptr, 1008/sizeof(XPV), XPV);
427 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
428 PL_xrv_arenaroot = ptr;
431 xrvend = &xrv[1008 / sizeof(XRV) - 1];
432 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
434 while (xrv < xrvend) {
435 xrv->xrv_rv = (SV*)(xrv + 1);
449 PL_xpv_root = (XPV*)xpv->xpv_pv;
455 S_del_xpv(pTHX_ XPV *p)
458 p->xpv_pv = (char*)PL_xpv_root;
467 register XPV* xpvend;
468 New(713, xpv, 1008/sizeof(XPV), XPV);
469 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
470 PL_xpv_arenaroot = xpv;
472 xpvend = &xpv[1008 / sizeof(XPV) - 1];
474 while (xpv < xpvend) {
475 xpv->xpv_pv = (char*)(xpv + 1);
488 xpviv = PL_xpviv_root;
489 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
495 S_del_xpviv(pTHX_ XPVIV *p)
498 p->xpv_pv = (char*)PL_xpviv_root;
506 register XPVIV* xpviv;
507 register XPVIV* xpvivend;
508 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
509 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
510 PL_xpviv_arenaroot = xpviv;
512 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
513 PL_xpviv_root = ++xpviv;
514 while (xpviv < xpvivend) {
515 xpviv->xpv_pv = (char*)(xpviv + 1);
528 xpvnv = PL_xpvnv_root;
529 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
535 S_del_xpvnv(pTHX_ XPVNV *p)
538 p->xpv_pv = (char*)PL_xpvnv_root;
546 register XPVNV* xpvnv;
547 register XPVNV* xpvnvend;
548 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
549 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
550 PL_xpvnv_arenaroot = xpvnv;
552 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
553 PL_xpvnv_root = ++xpvnv;
554 while (xpvnv < xpvnvend) {
555 xpvnv->xpv_pv = (char*)(xpvnv + 1);
568 xpvcv = PL_xpvcv_root;
569 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
575 S_del_xpvcv(pTHX_ XPVCV *p)
578 p->xpv_pv = (char*)PL_xpvcv_root;
586 register XPVCV* xpvcv;
587 register XPVCV* xpvcvend;
588 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
589 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
590 PL_xpvcv_arenaroot = xpvcv;
592 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
593 PL_xpvcv_root = ++xpvcv;
594 while (xpvcv < xpvcvend) {
595 xpvcv->xpv_pv = (char*)(xpvcv + 1);
608 xpvav = PL_xpvav_root;
609 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
615 S_del_xpvav(pTHX_ XPVAV *p)
618 p->xav_array = (char*)PL_xpvav_root;
626 register XPVAV* xpvav;
627 register XPVAV* xpvavend;
628 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
629 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
630 PL_xpvav_arenaroot = xpvav;
632 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
633 PL_xpvav_root = ++xpvav;
634 while (xpvav < xpvavend) {
635 xpvav->xav_array = (char*)(xpvav + 1);
638 xpvav->xav_array = 0;
648 xpvhv = PL_xpvhv_root;
649 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
655 S_del_xpvhv(pTHX_ XPVHV *p)
658 p->xhv_array = (char*)PL_xpvhv_root;
666 register XPVHV* xpvhv;
667 register XPVHV* xpvhvend;
668 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
669 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
670 PL_xpvhv_arenaroot = xpvhv;
672 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
673 PL_xpvhv_root = ++xpvhv;
674 while (xpvhv < xpvhvend) {
675 xpvhv->xhv_array = (char*)(xpvhv + 1);
678 xpvhv->xhv_array = 0;
688 xpvmg = PL_xpvmg_root;
689 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
695 S_del_xpvmg(pTHX_ XPVMG *p)
698 p->xpv_pv = (char*)PL_xpvmg_root;
706 register XPVMG* xpvmg;
707 register XPVMG* xpvmgend;
708 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
709 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
710 PL_xpvmg_arenaroot = xpvmg;
712 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
713 PL_xpvmg_root = ++xpvmg;
714 while (xpvmg < xpvmgend) {
715 xpvmg->xpv_pv = (char*)(xpvmg + 1);
728 xpvlv = PL_xpvlv_root;
729 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
735 S_del_xpvlv(pTHX_ XPVLV *p)
738 p->xpv_pv = (char*)PL_xpvlv_root;
746 register XPVLV* xpvlv;
747 register XPVLV* xpvlvend;
748 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
749 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
750 PL_xpvlv_arenaroot = xpvlv;
752 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
753 PL_xpvlv_root = ++xpvlv;
754 while (xpvlv < xpvlvend) {
755 xpvlv->xpv_pv = (char*)(xpvlv + 1);
768 xpvbm = PL_xpvbm_root;
769 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
775 S_del_xpvbm(pTHX_ XPVBM *p)
778 p->xpv_pv = (char*)PL_xpvbm_root;
786 register XPVBM* xpvbm;
787 register XPVBM* xpvbmend;
788 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
789 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
790 PL_xpvbm_arenaroot = xpvbm;
792 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
793 PL_xpvbm_root = ++xpvbm;
794 while (xpvbm < xpvbmend) {
795 xpvbm->xpv_pv = (char*)(xpvbm + 1);
802 # define my_safemalloc(s) (void*)safexmalloc(717,s)
803 # define my_safefree(p) safexfree((char*)p)
805 # define my_safemalloc(s) (void*)safemalloc(s)
806 # define my_safefree(p) safefree((char*)p)
811 #define new_XIV() my_safemalloc(sizeof(XPVIV))
812 #define del_XIV(p) my_safefree(p)
814 #define new_XNV() my_safemalloc(sizeof(XPVNV))
815 #define del_XNV(p) my_safefree(p)
817 #define new_XRV() my_safemalloc(sizeof(XRV))
818 #define del_XRV(p) my_safefree(p)
820 #define new_XPV() my_safemalloc(sizeof(XPV))
821 #define del_XPV(p) my_safefree(p)
823 #define new_XPVIV() my_safemalloc(sizeof(XPVIV))
824 #define del_XPVIV(p) my_safefree(p)
826 #define new_XPVNV() my_safemalloc(sizeof(XPVNV))
827 #define del_XPVNV(p) my_safefree(p)
829 #define new_XPVCV() my_safemalloc(sizeof(XPVCV))
830 #define del_XPVCV(p) my_safefree(p)
832 #define new_XPVAV() my_safemalloc(sizeof(XPVAV))
833 #define del_XPVAV(p) my_safefree(p)
835 #define new_XPVHV() my_safemalloc(sizeof(XPVHV))
836 #define del_XPVHV(p) my_safefree(p)
838 #define new_XPVMG() my_safemalloc(sizeof(XPVMG))
839 #define del_XPVMG(p) my_safefree(p)
841 #define new_XPVLV() my_safemalloc(sizeof(XPVLV))
842 #define del_XPVLV(p) my_safefree(p)
844 #define new_XPVBM() my_safemalloc(sizeof(XPVBM))
845 #define del_XPVBM(p) my_safefree(p)
849 #define new_XIV() (void*)new_xiv()
850 #define del_XIV(p) del_xiv((XPVIV*) p)
852 #define new_XNV() (void*)new_xnv()
853 #define del_XNV(p) del_xnv((XPVNV*) p)
855 #define new_XRV() (void*)new_xrv()
856 #define del_XRV(p) del_xrv((XRV*) p)
858 #define new_XPV() (void*)new_xpv()
859 #define del_XPV(p) del_xpv((XPV *)p)
861 #define new_XPVIV() (void*)new_xpviv()
862 #define del_XPVIV(p) del_xpviv((XPVIV *)p)
864 #define new_XPVNV() (void*)new_xpvnv()
865 #define del_XPVNV(p) del_xpvnv((XPVNV *)p)
867 #define new_XPVCV() (void*)new_xpvcv()
868 #define del_XPVCV(p) del_xpvcv((XPVCV *)p)
870 #define new_XPVAV() (void*)new_xpvav()
871 #define del_XPVAV(p) del_xpvav((XPVAV *)p)
873 #define new_XPVHV() (void*)new_xpvhv()
874 #define del_XPVHV(p) del_xpvhv((XPVHV *)p)
876 #define new_XPVMG() (void*)new_xpvmg()
877 #define del_XPVMG(p) del_xpvmg((XPVMG *)p)
879 #define new_XPVLV() (void*)new_xpvlv()
880 #define del_XPVLV(p) del_xpvlv((XPVLV *)p)
882 #define new_XPVBM() (void*)new_xpvbm()
883 #define del_XPVBM(p) del_xpvbm((XPVBM *)p)
887 #define new_XPVGV() my_safemalloc(sizeof(XPVGV))
888 #define del_XPVGV(p) my_safefree(p)
890 #define new_XPVFM() my_safemalloc(sizeof(XPVFM))
891 #define del_XPVFM(p) my_safefree(p)
893 #define new_XPVIO() my_safemalloc(sizeof(XPVIO))
894 #define del_XPVIO(p) my_safefree(p)
897 =for apidoc sv_upgrade
899 Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
906 Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
916 if (SvTYPE(sv) == mt)
922 switch (SvTYPE(sv)) {
943 else if (mt < SVt_PVIV)
960 pv = (char*)SvRV(sv);
980 else if (mt == SVt_NV)
991 del_XPVIV(SvANY(sv));
1001 del_XPVNV(SvANY(sv));
1009 magic = SvMAGIC(sv);
1010 stash = SvSTASH(sv);
1011 del_XPVMG(SvANY(sv));
1014 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
1019 Perl_croak(aTHX_ "Can't upgrade to undef");
1021 SvANY(sv) = new_XIV();
1025 SvANY(sv) = new_XNV();
1029 SvANY(sv) = new_XRV();
1033 SvANY(sv) = new_XPV();
1039 SvANY(sv) = new_XPVIV();
1049 SvANY(sv) = new_XPVNV();
1057 SvANY(sv) = new_XPVMG();
1063 SvMAGIC(sv) = magic;
1064 SvSTASH(sv) = stash;
1067 SvANY(sv) = new_XPVLV();
1073 SvMAGIC(sv) = magic;
1074 SvSTASH(sv) = stash;
1081 SvANY(sv) = new_XPVAV();
1089 SvMAGIC(sv) = magic;
1090 SvSTASH(sv) = stash;
1096 SvANY(sv) = new_XPVHV();
1104 SvMAGIC(sv) = magic;
1105 SvSTASH(sv) = stash;
1112 SvANY(sv) = new_XPVCV();
1113 Zero(SvANY(sv), 1, XPVCV);
1119 SvMAGIC(sv) = magic;
1120 SvSTASH(sv) = stash;
1123 SvANY(sv) = new_XPVGV();
1129 SvMAGIC(sv) = magic;
1130 SvSTASH(sv) = stash;
1138 SvANY(sv) = new_XPVBM();
1144 SvMAGIC(sv) = magic;
1145 SvSTASH(sv) = stash;
1151 SvANY(sv) = new_XPVFM();
1152 Zero(SvANY(sv), 1, XPVFM);
1158 SvMAGIC(sv) = magic;
1159 SvSTASH(sv) = stash;
1162 SvANY(sv) = new_XPVIO();
1163 Zero(SvANY(sv), 1, XPVIO);
1169 SvMAGIC(sv) = magic;
1170 SvSTASH(sv) = stash;
1171 IoPAGE_LEN(sv) = 60;
1174 SvFLAGS(sv) &= ~SVTYPEMASK;
1180 Perl_sv_backoff(pTHX_ register SV *sv)
1184 char *s = SvPVX(sv);
1185 SvLEN(sv) += SvIVX(sv);
1186 SvPVX(sv) -= SvIVX(sv);
1188 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1190 SvFLAGS(sv) &= ~SVf_OOK;
1197 Expands the character buffer in the SV. This will use C<sv_unref> and will
1198 upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1205 Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
1209 #ifdef HAS_64K_LIMIT
1210 if (newlen >= 0x10000) {
1211 PerlIO_printf(Perl_debug_log,
1212 "Allocation too large: %"UVxf"\n", (UV)newlen);
1215 #endif /* HAS_64K_LIMIT */
1218 if (SvTYPE(sv) < SVt_PV) {
1219 sv_upgrade(sv, SVt_PV);
1222 else if (SvOOK(sv)) { /* pv is offset? */
1225 if (newlen > SvLEN(sv))
1226 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1227 #ifdef HAS_64K_LIMIT
1228 if (newlen >= 0x10000)
1234 if (newlen > SvLEN(sv)) { /* need more room? */
1235 if (SvLEN(sv) && s) {
1236 #if defined(MYMALLOC) && !defined(LEAKTEST)
1237 STRLEN l = malloced_size((void*)SvPVX(sv));
1243 Renew(s,newlen,char);
1246 New(703,s,newlen,char);
1248 SvLEN_set(sv, newlen);
1254 =for apidoc sv_setiv
1256 Copies an integer into the given SV. Does not handle 'set' magic. See
1263 Perl_sv_setiv(pTHX_ register SV *sv, IV i)
1265 SV_CHECK_THINKFIRST(sv);
1266 switch (SvTYPE(sv)) {
1268 sv_upgrade(sv, SVt_IV);
1271 sv_upgrade(sv, SVt_PVNV);
1275 sv_upgrade(sv, SVt_PVIV);
1286 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1287 PL_op_desc[PL_op->op_type]);
1290 (void)SvIOK_only(sv); /* validate number */
1296 =for apidoc sv_setiv_mg
1298 Like C<sv_setiv>, but also handles 'set' magic.
1304 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1311 =for apidoc sv_setuv
1313 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1320 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
1328 =for apidoc sv_setuv_mg
1330 Like C<sv_setuv>, but also handles 'set' magic.
1336 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1343 =for apidoc sv_setnv
1345 Copies a double into the given SV. Does not handle 'set' magic. See
1352 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1354 SV_CHECK_THINKFIRST(sv);
1355 switch (SvTYPE(sv)) {
1358 sv_upgrade(sv, SVt_NV);
1363 sv_upgrade(sv, SVt_PVNV);
1374 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1375 PL_op_name[PL_op->op_type]);
1379 (void)SvNOK_only(sv); /* validate number */
1384 =for apidoc sv_setnv_mg
1386 Like C<sv_setnv>, but also handles 'set' magic.
1392 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1399 S_not_a_number(pTHX_ SV *sv)
1405 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1406 /* each *s can expand to 4 chars + "...\0",
1407 i.e. need room for 8 chars */
1409 for (s = SvPVX(sv); *s && d < limit; s++) {
1411 if (ch & 128 && !isPRINT_LC(ch)) {
1420 else if (ch == '\r') {
1424 else if (ch == '\f') {
1428 else if (ch == '\\') {
1432 else if (isPRINT_LC(ch))
1447 Perl_warner(aTHX_ WARN_NUMERIC,
1448 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1449 PL_op_desc[PL_op->op_type]);
1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric", tmpbuf);
1455 /* the number can be converted to integer with atol() or atoll() */
1456 #define IS_NUMBER_TO_INT_BY_ATOL 0x01
1457 #define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1458 #define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1459 #define IS_NUMBER_NEG 0x08 /* not good to cache UV */
1460 #define IS_NUMBER_INFINITY 0x10 /* this is big */
1462 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1463 until proven guilty, assume that things are not that bad... */
1466 Perl_sv_2iv(pTHX_ register SV *sv)
1470 if (SvGMAGICAL(sv)) {
1475 return I_V(SvNVX(sv));
1477 if (SvPOKp(sv) && SvLEN(sv))
1480 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1482 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1488 if (SvTHINKFIRST(sv)) {
1491 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1492 return SvIV(tmpstr);
1493 return PTR2IV(SvRV(sv));
1495 if (SvREADONLY(sv) && !SvOK(sv)) {
1497 if (ckWARN(WARN_UNINITIALIZED))
1504 return (IV)(SvUVX(sv));
1511 /* We can cache the IV/UV value even if it not good enough
1512 * to reconstruct NV, since the conversion to PV will prefer
1516 if (SvTYPE(sv) == SVt_NV)
1517 sv_upgrade(sv, SVt_PVNV);
1520 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1521 SvIVX(sv) = I_V(SvNVX(sv));
1523 SvUVX(sv) = U_V(SvNVX(sv));
1526 DEBUG_c(PerlIO_printf(Perl_debug_log,
1527 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1531 return (IV)SvUVX(sv);
1534 else if (SvPOKp(sv) && SvLEN(sv)) {
1535 I32 numtype = looks_like_number(sv);
1537 /* We want to avoid a possible problem when we cache an IV which
1538 may be later translated to an NV, and the resulting NV is not
1539 the translation of the initial data.
1541 This means that if we cache such an IV, we need to cache the
1542 NV as well. Moreover, we trade speed for space, and do not
1543 cache the NV if not needed.
1545 if (numtype & IS_NUMBER_NOT_IV) {
1546 /* May be not an integer. Need to cache NV if we cache IV
1547 * - otherwise future conversion to NV will be wrong. */
1550 d = Atof(SvPVX(sv));
1552 if (SvTYPE(sv) < SVt_PVNV)
1553 sv_upgrade(sv, SVt_PVNV);
1557 #if defined(USE_LONG_DOUBLE)
1558 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1559 PTR2UV(sv), SvNVX(sv)));
1561 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1562 PTR2UV(sv), SvNVX(sv)));
1564 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1565 SvIVX(sv) = I_V(SvNVX(sv));
1567 SvUVX(sv) = U_V(SvNVX(sv));
1572 else { /* The NV may be reconstructed from IV - safe to cache IV,
1573 which may be calculated by atol(). */
1574 if (SvTYPE(sv) < SVt_PVIV)
1575 sv_upgrade(sv, SVt_PVIV);
1577 SvIVX(sv) = Atol(SvPVX(sv));
1578 if (! numtype && ckWARN(WARN_NUMERIC))
1584 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1586 if (SvTYPE(sv) < SVt_IV)
1587 /* Typically the caller expects that sv_any is not NULL now. */
1588 sv_upgrade(sv, SVt_IV);
1591 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1592 PTR2UV(sv),SvIVX(sv)));
1593 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1597 Perl_sv_2uv(pTHX_ register SV *sv)
1601 if (SvGMAGICAL(sv)) {
1606 return U_V(SvNVX(sv));
1607 if (SvPOKp(sv) && SvLEN(sv))
1610 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1612 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1618 if (SvTHINKFIRST(sv)) {
1621 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1622 return SvUV(tmpstr);
1623 return PTR2UV(SvRV(sv));
1625 if (SvREADONLY(sv) && !SvOK(sv)) {
1627 if (ckWARN(WARN_UNINITIALIZED))
1637 return (UV)SvIVX(sv);
1641 /* We can cache the IV/UV value even if it not good enough
1642 * to reconstruct NV, since the conversion to PV will prefer
1645 if (SvTYPE(sv) == SVt_NV)
1646 sv_upgrade(sv, SVt_PVNV);
1648 if (SvNVX(sv) >= -0.5) {
1650 SvUVX(sv) = U_V(SvNVX(sv));
1653 SvIVX(sv) = I_V(SvNVX(sv));
1655 DEBUG_c(PerlIO_printf(Perl_debug_log,
1656 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1659 (IV)(UV)SvIVX(sv)));
1660 return (UV)SvIVX(sv);
1663 else if (SvPOKp(sv) && SvLEN(sv)) {
1664 I32 numtype = looks_like_number(sv);
1666 /* We want to avoid a possible problem when we cache a UV which
1667 may be later translated to an NV, and the resulting NV is not
1668 the translation of the initial data.
1670 This means that if we cache such a UV, we need to cache the
1671 NV as well. Moreover, we trade speed for space, and do not
1672 cache the NV if not needed.
1674 if (numtype & IS_NUMBER_NOT_IV) {
1675 /* May be not an integer. Need to cache NV if we cache IV
1676 * - otherwise future conversion to NV will be wrong. */
1679 d = Atof(SvPVX(sv));
1681 if (SvTYPE(sv) < SVt_PVNV)
1682 sv_upgrade(sv, SVt_PVNV);
1686 #if defined(USE_LONG_DOUBLE)
1687 DEBUG_c(PerlIO_printf(Perl_debug_log,
1688 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1689 PTR2UV(sv), SvNVX(sv)));
1691 DEBUG_c(PerlIO_printf(Perl_debug_log,
1692 "0x%"UVxf" 2nv(%g)\n",
1693 PTR2UV(sv), SvNVX(sv)));
1695 if (SvNVX(sv) < -0.5) {
1696 SvIVX(sv) = I_V(SvNVX(sv));
1699 SvUVX(sv) = U_V(SvNVX(sv));
1703 else if (numtype & IS_NUMBER_NEG) {
1704 /* The NV may be reconstructed from IV - safe to cache IV,
1705 which may be calculated by atol(). */
1706 if (SvTYPE(sv) == SVt_PV)
1707 sv_upgrade(sv, SVt_PVIV);
1709 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1711 else if (numtype) { /* Non-negative */
1712 /* The NV may be reconstructed from UV - safe to cache UV,
1713 which may be calculated by strtoul()/atol. */
1714 if (SvTYPE(sv) == SVt_PV)
1715 sv_upgrade(sv, SVt_PVIV);
1717 (void)SvIsUV_on(sv);
1719 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1720 #else /* no atou(), but we know the number fits into IV... */
1721 /* The only problem may be if it is negative... */
1722 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1725 else { /* Not a number. Cache 0. */
1728 if (SvTYPE(sv) < SVt_PVIV)
1729 sv_upgrade(sv, SVt_PVIV);
1731 (void)SvIsUV_on(sv);
1732 SvUVX(sv) = 0; /* We assume that 0s have the
1733 same bitmap in IV and UV. */
1734 if (ckWARN(WARN_NUMERIC))
1739 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1741 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1744 if (SvTYPE(sv) < SVt_IV)
1745 /* Typically the caller expects that sv_any is not NULL now. */
1746 sv_upgrade(sv, SVt_IV);
1750 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1751 PTR2UV(sv),SvUVX(sv)));
1752 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1756 Perl_sv_2nv(pTHX_ register SV *sv)
1760 if (SvGMAGICAL(sv)) {
1764 if (SvPOKp(sv) && SvLEN(sv)) {
1766 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1768 return Atof(SvPVX(sv));
1772 return (NV)SvUVX(sv);
1774 return (NV)SvIVX(sv);
1777 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1779 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1785 if (SvTHINKFIRST(sv)) {
1788 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1789 return SvNV(tmpstr);
1790 return PTR2NV(SvRV(sv));
1792 if (SvREADONLY(sv) && !SvOK(sv)) {
1794 if (ckWARN(WARN_UNINITIALIZED))
1799 if (SvTYPE(sv) < SVt_NV) {
1800 if (SvTYPE(sv) == SVt_IV)
1801 sv_upgrade(sv, SVt_PVNV);
1803 sv_upgrade(sv, SVt_NV);
1804 #if defined(USE_LONG_DOUBLE)
1806 STORE_NUMERIC_LOCAL_SET_STANDARD();
1807 PerlIO_printf(Perl_debug_log,
1808 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1809 PTR2UV(sv), SvNVX(sv));
1810 RESTORE_NUMERIC_LOCAL();
1814 STORE_NUMERIC_LOCAL_SET_STANDARD();
1815 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1816 PTR2UV(sv), SvNVX(sv));
1817 RESTORE_NUMERIC_LOCAL();
1821 else if (SvTYPE(sv) < SVt_PVNV)
1822 sv_upgrade(sv, SVt_PVNV);
1824 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1826 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1828 else if (SvPOKp(sv) && SvLEN(sv)) {
1830 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1832 SvNVX(sv) = Atof(SvPVX(sv));
1836 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1838 if (SvTYPE(sv) < SVt_NV)
1839 /* Typically the caller expects that sv_any is not NULL now. */
1840 sv_upgrade(sv, SVt_NV);
1844 #if defined(USE_LONG_DOUBLE)
1846 STORE_NUMERIC_LOCAL_SET_STANDARD();
1847 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1848 PTR2UV(sv), SvNVX(sv));
1849 RESTORE_NUMERIC_LOCAL();
1853 STORE_NUMERIC_LOCAL_SET_STANDARD();
1854 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1855 PTR2UV(sv), SvNVX(sv));
1856 RESTORE_NUMERIC_LOCAL();
1863 S_asIV(pTHX_ SV *sv)
1865 I32 numtype = looks_like_number(sv);
1868 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1869 return Atol(SvPVX(sv));
1872 if (ckWARN(WARN_NUMERIC))
1875 d = Atof(SvPVX(sv));
1880 S_asUV(pTHX_ SV *sv)
1882 I32 numtype = looks_like_number(sv);
1885 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1886 return Strtoul(SvPVX(sv), Null(char**), 10);
1890 if (ckWARN(WARN_NUMERIC))
1893 return U_V(Atof(SvPVX(sv)));
1897 * Returns a combination of (advisory only - can get false negatives)
1898 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1900 * 0 if does not look like number.
1902 * In fact possible values are 0 and
1903 * IS_NUMBER_TO_INT_BY_ATOL 123
1904 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1905 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1906 * IS_NUMBER_INFINITY
1907 * with a possible addition of IS_NUMBER_NEG.
1911 =for apidoc looks_like_number
1913 Test if an the content of an SV looks like a number (or is a
1920 Perl_looks_like_number(pTHX_ SV *sv)
1923 register char *send;
1924 register char *sbegin;
1925 register char *nbegin;
1934 else if (SvPOKp(sv))
1935 sbegin = SvPV(sv, len);
1938 send = sbegin + len;
1945 numtype = IS_NUMBER_NEG;
1952 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1953 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1957 /* next must be digit or the radix separator or beginning of infinity */
1961 } while (isDIGIT(*s));
1963 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1964 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1966 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1969 #ifdef USE_LOCALE_NUMERIC
1970 || IS_NUMERIC_RADIX(*s)
1974 numtype |= IS_NUMBER_NOT_IV;
1975 while (isDIGIT(*s)) /* optional digits after the radix */
1980 #ifdef USE_LOCALE_NUMERIC
1981 || IS_NUMERIC_RADIX(*s)
1985 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1986 /* no digits before the radix means we need digits after it */
1990 } while (isDIGIT(*s));
1995 else if (*s == 'I' || *s == 'i') {
1996 s++; if (*s != 'N' && *s != 'n') return 0;
1997 s++; if (*s != 'F' && *s != 'f') return 0;
1998 s++; if (*s == 'I' || *s == 'i') {
1999 s++; if (*s != 'N' && *s != 'n') return 0;
2000 s++; if (*s != 'I' && *s != 'i') return 0;
2001 s++; if (*s != 'T' && *s != 't') return 0;
2002 s++; if (*s != 'Y' && *s != 'y') return 0;
2010 numtype = IS_NUMBER_INFINITY;
2012 /* we can have an optional exponent part */
2013 if (*s == 'e' || *s == 'E') {
2014 numtype &= ~IS_NUMBER_NEG;
2015 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2017 if (*s == '+' || *s == '-')
2022 } while (isDIGIT(*s));
2032 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2033 return IS_NUMBER_TO_INT_BY_ATOL;
2038 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2041 return sv_2pv(sv, &n_a);
2044 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2046 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2048 char *ptr = buf + TYPE_CHARS(UV);
2062 *--ptr = '0' + (uv % 10);
2071 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2076 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2077 char *tmpbuf = tbuf;
2083 if (SvGMAGICAL(sv)) {
2091 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2093 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2098 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2103 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2105 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2112 if (SvTHINKFIRST(sv)) {
2115 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
2116 return SvPV(tmpstr,*lp);
2123 switch (SvTYPE(sv)) {
2125 if ( ((SvFLAGS(sv) &
2126 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2127 == (SVs_OBJECT|SVs_RMG))
2128 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2129 && (mg = mg_find(sv, 'r'))) {
2131 regexp *re = (regexp *)mg->mg_obj;
2134 char *fptr = "msix";
2139 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2141 while((ch = *fptr++)) {
2143 reflags[left++] = ch;
2146 reflags[right--] = ch;
2151 reflags[left] = '-';
2155 mg->mg_len = re->prelen + 4 + left;
2156 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2157 Copy("(?", mg->mg_ptr, 2, char);
2158 Copy(reflags, mg->mg_ptr+2, left, char);
2159 Copy(":", mg->mg_ptr+left+2, 1, char);
2160 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2161 mg->mg_ptr[mg->mg_len - 1] = ')';
2162 mg->mg_ptr[mg->mg_len] = 0;
2164 PL_reginterp_cnt += re->program[0].next_off;
2176 case SVt_PVBM: if (SvROK(sv))
2179 s = "SCALAR"; break;
2180 case SVt_PVLV: s = "LVALUE"; break;
2181 case SVt_PVAV: s = "ARRAY"; break;
2182 case SVt_PVHV: s = "HASH"; break;
2183 case SVt_PVCV: s = "CODE"; break;
2184 case SVt_PVGV: s = "GLOB"; break;
2185 case SVt_PVFM: s = "FORMAT"; break;
2186 case SVt_PVIO: s = "IO"; break;
2187 default: s = "UNKNOWN"; break;
2191 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2194 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2200 if (SvREADONLY(sv) && !SvOK(sv)) {
2202 if (ckWARN(WARN_UNINITIALIZED))
2208 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2209 /* XXXX 64-bit? IV may have better precision... */
2210 /* I tried changing this to be 64-bit-aware and
2211 * the t/op/numconvert.t became very, very, angry.
2213 if (SvTYPE(sv) < SVt_PVNV)
2214 sv_upgrade(sv, SVt_PVNV);
2215 /* The +20 is pure guesswork. Configure test needed. --jhi */
2216 SvGROW(sv, NV_DIG + 20);
2218 olderrno = errno; /* some Xenix systems wipe out errno here */
2220 if (SvNVX(sv) == 0.0)
2221 (void)strcpy(s,"0");
2225 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2228 #ifdef FIXNEGATIVEZERO
2229 if (*s == '-' && s[1] == '0' && !s[2])
2238 else if (SvIOKp(sv)) {
2239 U32 isIOK = SvIOK(sv);
2240 U32 isUIOK = SvIsUV(sv);
2241 char buf[TYPE_CHARS(UV)];
2244 if (SvTYPE(sv) < SVt_PVIV)
2245 sv_upgrade(sv, SVt_PVIV);
2247 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2249 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2250 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2251 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2252 SvCUR_set(sv, ebuf - ptr);
2265 if (ckWARN(WARN_UNINITIALIZED)
2266 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2271 if (SvTYPE(sv) < SVt_PV)
2272 /* Typically the caller expects that sv_any is not NULL now. */
2273 sv_upgrade(sv, SVt_PV);
2276 *lp = s - SvPVX(sv);
2279 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2280 PTR2UV(sv),SvPVX(sv)));
2284 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2285 /* Sneaky stuff here */
2289 tsv = newSVpv(tmpbuf, 0);
2305 len = strlen(tmpbuf);
2307 #ifdef FIXNEGATIVEZERO
2308 if (len == 2 && t[0] == '-' && t[1] == '0') {
2313 (void)SvUPGRADE(sv, SVt_PV);
2315 s = SvGROW(sv, len + 1);
2324 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2327 return sv_2pvbyte(sv, &n_a);
2331 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2333 return sv_2pv(sv,lp);
2337 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2340 return sv_2pvutf8(sv, &n_a);
2344 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2346 sv_utf8_upgrade(sv);
2347 return sv_2pv(sv,lp);
2350 /* This function is only called on magical items */
2352 Perl_sv_2bool(pTHX_ register SV *sv)
2362 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
2363 return SvTRUE(tmpsv);
2364 return SvRV(sv) != 0;
2367 register XPV* Xpvtmp;
2368 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2369 (*Xpvtmp->xpv_pv > '0' ||
2370 Xpvtmp->xpv_cur > 1 ||
2371 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2378 return SvIVX(sv) != 0;
2381 return SvNVX(sv) != 0.0;
2389 =for apidoc sv_utf8_upgrade
2391 Convert the PV of an SV to its UTF8-encoded form.
2397 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2402 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2405 /* This function could be much more efficient if we had a FLAG in SVs
2406 * to signal if there are any hibit chars in the PV.
2408 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2413 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2414 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2415 SvCUR(sv) = len - 1;
2416 SvLEN(sv) = len; /* No longer know the real size. */
2418 Safefree(s); /* No longer using what was there before. */
2423 =for apidoc sv_utf8_downgrade
2425 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2426 This may not be possible if the PV contains non-byte encoding characters;
2427 if this is the case, either returns false or, if C<fail_ok> is not
2434 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2436 if (SvPOK(sv) && SvUTF8(sv)) {
2437 char *c = SvPVX(sv);
2438 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
2439 if (!utf8_to_bytes((U8*)c, &len)) {
2443 Perl_croak(aTHX_ "big byte");
2445 SvCUR(sv) = len - 1;
2452 =for apidoc sv_utf8_encode
2454 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2455 flag so that it looks like bytes again. Nothing calls this.
2461 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2463 sv_utf8_upgrade(sv);
2468 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2472 bool has_utf = FALSE;
2473 if (!sv_utf8_downgrade(sv, TRUE))
2476 /* it is actually just a matter of turning the utf8 flag on, but
2477 * we want to make sure everything inside is valid utf8 first.
2480 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2483 while (c < SvEND(sv)) {
2494 /* Note: sv_setsv() should not be called with a source string that needs
2495 * to be reused, since it may destroy the source string if it is marked
2500 =for apidoc sv_setsv
2502 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2503 The source SV may be destroyed if it is mortal. Does not handle 'set'
2504 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2511 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2514 register U32 sflags;
2520 SV_CHECK_THINKFIRST(dstr);
2522 sstr = &PL_sv_undef;
2523 stype = SvTYPE(sstr);
2524 dtype = SvTYPE(dstr);
2528 /* There's a lot of redundancy below but we're going for speed here */
2533 if (dtype != SVt_PVGV) {
2534 (void)SvOK_off(dstr);
2542 sv_upgrade(dstr, SVt_IV);
2545 sv_upgrade(dstr, SVt_PVNV);
2549 sv_upgrade(dstr, SVt_PVIV);
2552 (void)SvIOK_only(dstr);
2553 SvIVX(dstr) = SvIVX(sstr);
2566 sv_upgrade(dstr, SVt_NV);
2571 sv_upgrade(dstr, SVt_PVNV);
2574 SvNVX(dstr) = SvNVX(sstr);
2575 (void)SvNOK_only(dstr);
2583 sv_upgrade(dstr, SVt_RV);
2584 else if (dtype == SVt_PVGV &&
2585 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2588 if (GvIMPORTED(dstr) != GVf_IMPORTED
2589 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2591 GvIMPORTED_on(dstr);
2602 sv_upgrade(dstr, SVt_PV);
2605 if (dtype < SVt_PVIV)
2606 sv_upgrade(dstr, SVt_PVIV);
2609 if (dtype < SVt_PVNV)
2610 sv_upgrade(dstr, SVt_PVNV);
2617 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2618 PL_op_name[PL_op->op_type]);
2620 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2624 if (dtype <= SVt_PVGV) {
2626 if (dtype != SVt_PVGV) {
2627 char *name = GvNAME(sstr);
2628 STRLEN len = GvNAMELEN(sstr);
2629 sv_upgrade(dstr, SVt_PVGV);
2630 sv_magic(dstr, dstr, '*', Nullch, 0);
2631 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2632 GvNAME(dstr) = savepvn(name, len);
2633 GvNAMELEN(dstr) = len;
2634 SvFAKE_on(dstr); /* can coerce to non-glob */
2636 /* ahem, death to those who redefine active sort subs */
2637 else if (PL_curstackinfo->si_type == PERLSI_SORT
2638 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2639 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2641 (void)SvOK_off(dstr);
2642 GvINTRO_off(dstr); /* one-shot flag */
2644 GvGP(dstr) = gp_ref(GvGP(sstr));
2646 if (GvIMPORTED(dstr) != GVf_IMPORTED
2647 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2649 GvIMPORTED_on(dstr);
2657 if (SvGMAGICAL(sstr)) {
2659 if (SvTYPE(sstr) != stype) {
2660 stype = SvTYPE(sstr);
2661 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2665 if (stype == SVt_PVLV)
2666 (void)SvUPGRADE(dstr, SVt_PVNV);
2668 (void)SvUPGRADE(dstr, stype);
2671 sflags = SvFLAGS(sstr);
2673 if (sflags & SVf_ROK) {
2674 if (dtype >= SVt_PV) {
2675 if (dtype == SVt_PVGV) {
2676 SV *sref = SvREFCNT_inc(SvRV(sstr));
2678 int intro = GvINTRO(dstr);
2683 GvINTRO_off(dstr); /* one-shot flag */
2684 Newz(602,gp, 1, GP);
2685 GvGP(dstr) = gp_ref(gp);
2686 GvSV(dstr) = NEWSV(72,0);
2687 GvLINE(dstr) = CopLINE(PL_curcop);
2688 GvEGV(dstr) = (GV*)dstr;
2691 switch (SvTYPE(sref)) {
2694 SAVESPTR(GvAV(dstr));
2696 dref = (SV*)GvAV(dstr);
2697 GvAV(dstr) = (AV*)sref;
2698 if (!GvIMPORTED_AV(dstr)
2699 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2701 GvIMPORTED_AV_on(dstr);
2706 SAVESPTR(GvHV(dstr));
2708 dref = (SV*)GvHV(dstr);
2709 GvHV(dstr) = (HV*)sref;
2710 if (!GvIMPORTED_HV(dstr)
2711 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2713 GvIMPORTED_HV_on(dstr);
2718 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2719 SvREFCNT_dec(GvCV(dstr));
2720 GvCV(dstr) = Nullcv;
2721 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2722 PL_sub_generation++;
2724 SAVESPTR(GvCV(dstr));
2727 dref = (SV*)GvCV(dstr);
2728 if (GvCV(dstr) != (CV*)sref) {
2729 CV* cv = GvCV(dstr);
2731 if (!GvCVGEN((GV*)dstr) &&
2732 (CvROOT(cv) || CvXSUB(cv)))
2734 SV *const_sv = cv_const_sv(cv);
2735 bool const_changed = TRUE;
2737 const_changed = sv_cmp(const_sv,
2738 op_const_sv(CvSTART((CV*)sref),
2740 /* ahem, death to those who redefine
2741 * active sort subs */
2742 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2743 PL_sortcop == CvSTART(cv))
2745 "Can't redefine active sort subroutine %s",
2746 GvENAME((GV*)dstr));
2747 if ((const_changed && const_sv) || ckWARN(WARN_REDEFINE))
2748 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
2749 "Constant subroutine %s redefined"
2750 : "Subroutine %s redefined",
2751 GvENAME((GV*)dstr));
2753 cv_ckproto(cv, (GV*)dstr,
2754 SvPOK(sref) ? SvPVX(sref) : Nullch);
2756 GvCV(dstr) = (CV*)sref;
2757 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2758 GvASSUMECV_on(dstr);
2759 PL_sub_generation++;
2761 if (!GvIMPORTED_CV(dstr)
2762 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2764 GvIMPORTED_CV_on(dstr);
2769 SAVESPTR(GvIOp(dstr));
2771 dref = (SV*)GvIOp(dstr);
2772 GvIOp(dstr) = (IO*)sref;
2776 SAVESPTR(GvFORM(dstr));
2778 dref = (SV*)GvFORM(dstr);
2779 GvFORM(dstr) = (CV*)sref;
2783 SAVESPTR(GvSV(dstr));
2785 dref = (SV*)GvSV(dstr);
2787 if (!GvIMPORTED_SV(dstr)
2788 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2790 GvIMPORTED_SV_on(dstr);
2802 (void)SvOOK_off(dstr); /* backoff */
2804 Safefree(SvPVX(dstr));
2805 SvLEN(dstr)=SvCUR(dstr)=0;
2808 (void)SvOK_off(dstr);
2809 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2811 if (sflags & SVp_NOK) {
2813 SvNVX(dstr) = SvNVX(sstr);
2815 if (sflags & SVp_IOK) {
2816 (void)SvIOK_on(dstr);
2817 SvIVX(dstr) = SvIVX(sstr);
2818 if (sflags & SVf_IVisUV)
2821 if (SvAMAGIC(sstr)) {
2825 else if (sflags & SVp_POK) {
2828 * Check to see if we can just swipe the string. If so, it's a
2829 * possible small lose on short strings, but a big win on long ones.
2830 * It might even be a win on short strings if SvPVX(dstr)
2831 * has to be allocated and SvPVX(sstr) has to be freed.
2834 if (SvTEMP(sstr) && /* slated for free anyway? */
2835 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2836 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2837 SvLEN(sstr)) /* and really is a string */
2839 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2841 SvFLAGS(dstr) &= ~SVf_OOK;
2842 Safefree(SvPVX(dstr) - SvIVX(dstr));
2844 else if (SvLEN(dstr))
2845 Safefree(SvPVX(dstr));
2847 (void)SvPOK_only(dstr);
2848 SvPV_set(dstr, SvPVX(sstr));
2849 SvLEN_set(dstr, SvLEN(sstr));
2850 SvCUR_set(dstr, SvCUR(sstr));
2853 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2854 SvPV_set(sstr, Nullch);
2859 else { /* have to copy actual string */
2860 STRLEN len = SvCUR(sstr);
2862 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2863 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2864 SvCUR_set(dstr, len);
2865 *SvEND(dstr) = '\0';
2866 (void)SvPOK_only(dstr);
2868 if ((sflags & SVf_UTF8) && !IN_BYTE)
2871 if (sflags & SVp_NOK) {
2873 SvNVX(dstr) = SvNVX(sstr);
2875 if (sflags & SVp_IOK) {
2876 (void)SvIOK_on(dstr);
2877 SvIVX(dstr) = SvIVX(sstr);
2878 if (sflags & SVf_IVisUV)
2882 else if (sflags & SVp_NOK) {
2883 SvNVX(dstr) = SvNVX(sstr);
2884 (void)SvNOK_only(dstr);
2885 if (sflags & SVf_IOK) {
2886 (void)SvIOK_on(dstr);
2887 SvIVX(dstr) = SvIVX(sstr);
2888 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2889 if (sflags & SVf_IVisUV)
2893 else if (sflags & SVp_IOK) {
2894 (void)SvIOK_only(dstr);
2895 SvIVX(dstr) = SvIVX(sstr);
2896 if (sflags & SVf_IVisUV)
2900 if (dtype == SVt_PVGV) {
2901 if (ckWARN(WARN_MISC))
2902 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2905 (void)SvOK_off(dstr);
2911 =for apidoc sv_setsv_mg
2913 Like C<sv_setsv>, but also handles 'set' magic.
2919 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2921 sv_setsv(dstr,sstr);
2926 =for apidoc sv_setpvn
2928 Copies a string into an SV. The C<len> parameter indicates the number of
2929 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2935 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2937 register char *dptr;
2938 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2939 elicit a warning, but it won't hurt. */
2940 SV_CHECK_THINKFIRST(sv);
2945 (void)SvUPGRADE(sv, SVt_PV);
2947 SvGROW(sv, len + 1);
2949 Move(ptr,dptr,len,char);
2952 (void)SvPOK_only(sv); /* validate pointer */
2957 =for apidoc sv_setpvn_mg
2959 Like C<sv_setpvn>, but also handles 'set' magic.
2965 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2967 sv_setpvn(sv,ptr,len);
2972 =for apidoc sv_setpv
2974 Copies a string into an SV. The string must be null-terminated. Does not
2975 handle 'set' magic. See C<sv_setpv_mg>.
2981 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
2983 register STRLEN len;
2985 SV_CHECK_THINKFIRST(sv);
2991 (void)SvUPGRADE(sv, SVt_PV);
2993 SvGROW(sv, len + 1);
2994 Move(ptr,SvPVX(sv),len+1,char);
2996 (void)SvPOK_only(sv); /* validate pointer */
3001 =for apidoc sv_setpv_mg
3003 Like C<sv_setpv>, but also handles 'set' magic.
3009 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3016 =for apidoc sv_usepvn
3018 Tells an SV to use C<ptr> to find its string value. Normally the string is
3019 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3020 The C<ptr> should point to memory that was allocated by C<malloc>. The
3021 string length, C<len>, must be supplied. This function will realloc the
3022 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3023 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3024 See C<sv_usepvn_mg>.
3030 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3032 SV_CHECK_THINKFIRST(sv);
3033 (void)SvUPGRADE(sv, SVt_PV);
3038 (void)SvOOK_off(sv);
3039 if (SvPVX(sv) && SvLEN(sv))
3040 Safefree(SvPVX(sv));
3041 Renew(ptr, len+1, char);
3044 SvLEN_set(sv, len+1);
3046 (void)SvPOK_only(sv); /* validate pointer */
3051 =for apidoc sv_usepvn_mg
3053 Like C<sv_usepvn>, but also handles 'set' magic.
3059 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3061 sv_usepvn(sv,ptr,len);
3066 Perl_sv_force_normal(pTHX_ register SV *sv)
3068 if (SvREADONLY(sv)) {
3071 char *pvx = SvPVX(sv);
3072 STRLEN len = SvCUR(sv);
3073 U32 hash = SvUVX(sv);
3074 SvGROW(sv, len + 1);
3075 Move(pvx,SvPVX(sv),len,char);
3079 unsharepvn(pvx,len,hash);
3081 else if (PL_curcop != &PL_compiling)
3082 Perl_croak(aTHX_ PL_no_modify);
3086 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3093 Efficient removal of characters from the beginning of the string buffer.
3094 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3095 the string buffer. The C<ptr> becomes the first character of the adjusted
3102 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3106 register STRLEN delta;
3108 if (!ptr || !SvPOKp(sv))
3110 SV_CHECK_THINKFIRST(sv);
3111 if (SvTYPE(sv) < SVt_PVIV)
3112 sv_upgrade(sv,SVt_PVIV);
3115 if (!SvLEN(sv)) { /* make copy of shared string */
3116 char *pvx = SvPVX(sv);
3117 STRLEN len = SvCUR(sv);
3118 SvGROW(sv, len + 1);
3119 Move(pvx,SvPVX(sv),len,char);
3123 SvFLAGS(sv) |= SVf_OOK;
3125 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3126 delta = ptr - SvPVX(sv);
3134 =for apidoc sv_catpvn
3136 Concatenates the string onto the end of the string which is in the SV. The
3137 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3138 'set' magic. See C<sv_catpvn_mg>.
3144 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3149 junk = SvPV_force(sv, tlen);
3150 SvGROW(sv, tlen + len + 1);
3153 Move(ptr,SvPVX(sv)+tlen,len,char);
3156 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3161 =for apidoc sv_catpvn_mg
3163 Like C<sv_catpvn>, but also handles 'set' magic.
3169 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3171 sv_catpvn(sv,ptr,len);
3176 =for apidoc sv_catsv
3178 Concatenates the string from SV C<ssv> onto the end of the string in SV
3179 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3185 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3191 if ((s = SvPV(sstr, len))) {
3192 if (DO_UTF8(sstr)) {
3193 sv_utf8_upgrade(dstr);
3194 sv_catpvn(dstr,s,len);
3198 sv_catpvn(dstr,s,len);
3203 =for apidoc sv_catsv_mg
3205 Like C<sv_catsv>, but also handles 'set' magic.
3211 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3213 sv_catsv(dstr,sstr);
3218 =for apidoc sv_catpv
3220 Concatenates the string onto the end of the string which is in the SV.
3221 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3227 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3229 register STRLEN len;
3235 junk = SvPV_force(sv, tlen);
3237 SvGROW(sv, tlen + len + 1);
3240 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3242 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3247 =for apidoc sv_catpv_mg
3249 Like C<sv_catpv>, but also handles 'set' magic.
3255 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3262 Perl_newSV(pTHX_ STRLEN len)
3268 sv_upgrade(sv, SVt_PV);
3269 SvGROW(sv, len + 1);
3274 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3277 =for apidoc sv_magic
3279 Adds magic to an SV.
3285 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3289 if (SvREADONLY(sv)) {
3291 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3292 Perl_croak(aTHX_ PL_no_modify);
3294 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3295 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3302 (void)SvUPGRADE(sv, SVt_PVMG);
3304 Newz(702,mg, 1, MAGIC);
3305 mg->mg_moremagic = SvMAGIC(sv);
3308 if (!obj || obj == sv || how == '#' || how == 'r')
3312 mg->mg_obj = SvREFCNT_inc(obj);
3313 mg->mg_flags |= MGf_REFCOUNTED;
3316 mg->mg_len = namlen;
3319 mg->mg_ptr = savepvn(name, namlen);
3320 else if (namlen == HEf_SVKEY)
3321 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3325 mg->mg_virtual = &PL_vtbl_sv;
3328 mg->mg_virtual = &PL_vtbl_amagic;
3331 mg->mg_virtual = &PL_vtbl_amagicelem;
3337 mg->mg_virtual = &PL_vtbl_bm;
3340 mg->mg_virtual = &PL_vtbl_regdata;
3343 mg->mg_virtual = &PL_vtbl_regdatum;
3346 mg->mg_virtual = &PL_vtbl_env;
3349 mg->mg_virtual = &PL_vtbl_fm;
3352 mg->mg_virtual = &PL_vtbl_envelem;
3355 mg->mg_virtual = &PL_vtbl_mglob;
3358 mg->mg_virtual = &PL_vtbl_isa;
3361 mg->mg_virtual = &PL_vtbl_isaelem;
3364 mg->mg_virtual = &PL_vtbl_nkeys;
3371 mg->mg_virtual = &PL_vtbl_dbline;
3375 mg->mg_virtual = &PL_vtbl_mutex;
3377 #endif /* USE_THREADS */
3378 #ifdef USE_LOCALE_COLLATE
3380 mg->mg_virtual = &PL_vtbl_collxfrm;
3382 #endif /* USE_LOCALE_COLLATE */
3384 mg->mg_virtual = &PL_vtbl_pack;
3388 mg->mg_virtual = &PL_vtbl_packelem;
3391 mg->mg_virtual = &PL_vtbl_regexp;
3394 mg->mg_virtual = &PL_vtbl_sig;
3397 mg->mg_virtual = &PL_vtbl_sigelem;
3400 mg->mg_virtual = &PL_vtbl_taint;
3404 mg->mg_virtual = &PL_vtbl_uvar;
3407 mg->mg_virtual = &PL_vtbl_vec;
3410 mg->mg_virtual = &PL_vtbl_substr;
3413 mg->mg_virtual = &PL_vtbl_defelem;
3416 mg->mg_virtual = &PL_vtbl_glob;
3419 mg->mg_virtual = &PL_vtbl_arylen;
3422 mg->mg_virtual = &PL_vtbl_pos;
3425 mg->mg_virtual = &PL_vtbl_backref;
3427 case '~': /* Reserved for use by extensions not perl internals. */
3428 /* Useful for attaching extension internal data to perl vars. */
3429 /* Note that multiple extensions may clash if magical scalars */
3430 /* etc holding private data from one are passed to another. */
3434 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3438 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3442 =for apidoc sv_unmagic
3444 Removes magic from an SV.
3450 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3454 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3457 for (mg = *mgp; mg; mg = *mgp) {
3458 if (mg->mg_type == type) {
3459 MGVTBL* vtbl = mg->mg_virtual;
3460 *mgp = mg->mg_moremagic;
3461 if (vtbl && vtbl->svt_free)
3462 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3463 if (mg->mg_ptr && mg->mg_type != 'g')
3464 if (mg->mg_len >= 0)
3465 Safefree(mg->mg_ptr);
3466 else if (mg->mg_len == HEf_SVKEY)
3467 SvREFCNT_dec((SV*)mg->mg_ptr);
3468 if (mg->mg_flags & MGf_REFCOUNTED)
3469 SvREFCNT_dec(mg->mg_obj);
3473 mgp = &mg->mg_moremagic;
3477 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3484 =for apidoc sv_rvweaken
3492 Perl_sv_rvweaken(pTHX_ SV *sv)
3495 if (!SvOK(sv)) /* let undefs pass */
3498 Perl_croak(aTHX_ "Can't weaken a nonreference");
3499 else if (SvWEAKREF(sv)) {
3501 if (ckWARN(WARN_MISC))
3502 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3506 sv_add_backref(tsv, sv);
3513 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3517 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3518 av = (AV*)mg->mg_obj;
3521 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3522 SvREFCNT_dec(av); /* for sv_magic */
3528 S_sv_del_backref(pTHX_ SV *sv)
3535 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3536 Perl_croak(aTHX_ "panic: del_backref");
3537 av = (AV *)mg->mg_obj;
3542 svp[i] = &PL_sv_undef; /* XXX */
3549 =for apidoc sv_insert
3551 Inserts a string at the specified offset/length within the SV. Similar to
3552 the Perl substr() function.
3558 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3562 register char *midend;
3563 register char *bigend;
3569 Perl_croak(aTHX_ "Can't modify non-existent substring");
3570 SvPV_force(bigstr, curlen);
3571 (void)SvPOK_only_UTF8(bigstr);
3572 if (offset + len > curlen) {
3573 SvGROW(bigstr, offset+len+1);
3574 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3575 SvCUR_set(bigstr, offset+len);
3579 i = littlelen - len;
3580 if (i > 0) { /* string might grow */
3581 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3582 mid = big + offset + len;
3583 midend = bigend = big + SvCUR(bigstr);
3586 while (midend > mid) /* shove everything down */
3587 *--bigend = *--midend;
3588 Move(little,big+offset,littlelen,char);
3594 Move(little,SvPVX(bigstr)+offset,len,char);
3599 big = SvPVX(bigstr);
3602 bigend = big + SvCUR(bigstr);
3604 if (midend > bigend)
3605 Perl_croak(aTHX_ "panic: sv_insert");
3607 if (mid - big > bigend - midend) { /* faster to shorten from end */
3609 Move(little, mid, littlelen,char);
3612 i = bigend - midend;
3614 Move(midend, mid, i,char);
3618 SvCUR_set(bigstr, mid - big);
3621 else if ((i = mid - big)) { /* faster from front */
3622 midend -= littlelen;
3624 sv_chop(bigstr,midend-i);
3629 Move(little, mid, littlelen,char);
3631 else if (littlelen) {
3632 midend -= littlelen;
3633 sv_chop(bigstr,midend);
3634 Move(little,midend,littlelen,char);
3637 sv_chop(bigstr,midend);
3643 =for apidoc sv_replace
3645 Make the first argument a copy of the second, then delete the original.
3651 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3654 U32 refcnt = SvREFCNT(sv);
3655 SV_CHECK_THINKFIRST(sv);
3656 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3657 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3658 if (SvMAGICAL(sv)) {
3662 sv_upgrade(nsv, SVt_PVMG);
3663 SvMAGIC(nsv) = SvMAGIC(sv);
3664 SvFLAGS(nsv) |= SvMAGICAL(sv);
3670 assert(!SvREFCNT(sv));
3671 StructCopy(nsv,sv,SV);
3672 SvREFCNT(sv) = refcnt;
3673 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3678 =for apidoc sv_clear
3680 Clear an SV, making it empty. Does not free the memory used by the SV
3687 Perl_sv_clear(pTHX_ register SV *sv)
3691 assert(SvREFCNT(sv) == 0);
3695 if (PL_defstash) { /* Still have a symbol table? */
3700 Zero(&tmpref, 1, SV);
3701 sv_upgrade(&tmpref, SVt_RV);
3703 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3704 SvREFCNT(&tmpref) = 1;
3707 stash = SvSTASH(sv);
3708 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3711 PUSHSTACKi(PERLSI_DESTROY);
3712 SvRV(&tmpref) = SvREFCNT_inc(sv);
3717 call_sv((SV*)GvCV(destructor),
3718 G_DISCARD|G_EVAL|G_KEEPERR);
3724 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3726 del_XRV(SvANY(&tmpref));
3729 if (PL_in_clean_objs)
3730 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3732 /* DESTROY gave object new lease on life */
3738 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3739 SvOBJECT_off(sv); /* Curse the object. */
3740 if (SvTYPE(sv) != SVt_PVIO)
3741 --PL_sv_objcount; /* XXX Might want something more general */
3744 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3747 switch (SvTYPE(sv)) {
3750 IoIFP(sv) != PerlIO_stdin() &&
3751 IoIFP(sv) != PerlIO_stdout() &&
3752 IoIFP(sv) != PerlIO_stderr())
3754 io_close((IO*)sv, FALSE);
3756 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3757 PerlDir_close(IoDIRP(sv));
3758 IoDIRP(sv) = (DIR*)NULL;
3759 Safefree(IoTOP_NAME(sv));
3760 Safefree(IoFMT_NAME(sv));
3761 Safefree(IoBOTTOM_NAME(sv));
3776 SvREFCNT_dec(LvTARG(sv));
3780 Safefree(GvNAME(sv));
3781 /* cannot decrease stash refcount yet, as we might recursively delete
3782 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3783 of stash until current sv is completely gone.
3784 -- JohnPC, 27 Mar 1998 */
3785 stash = GvSTASH(sv);
3791 (void)SvOOK_off(sv);
3799 SvREFCNT_dec(SvRV(sv));
3801 else if (SvPVX(sv) && SvLEN(sv))
3802 Safefree(SvPVX(sv));
3803 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3804 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3816 switch (SvTYPE(sv)) {
3832 del_XPVIV(SvANY(sv));
3835 del_XPVNV(SvANY(sv));
3838 del_XPVMG(SvANY(sv));
3841 del_XPVLV(SvANY(sv));
3844 del_XPVAV(SvANY(sv));
3847 del_XPVHV(SvANY(sv));
3850 del_XPVCV(SvANY(sv));
3853 del_XPVGV(SvANY(sv));
3854 /* code duplication for increased performance. */
3855 SvFLAGS(sv) &= SVf_BREAK;
3856 SvFLAGS(sv) |= SVTYPEMASK;
3857 /* decrease refcount of the stash that owns this GV, if any */
3859 SvREFCNT_dec(stash);
3860 return; /* not break, SvFLAGS reset already happened */
3862 del_XPVBM(SvANY(sv));
3865 del_XPVFM(SvANY(sv));
3868 del_XPVIO(SvANY(sv));
3871 SvFLAGS(sv) &= SVf_BREAK;
3872 SvFLAGS(sv) |= SVTYPEMASK;
3876 Perl_sv_newref(pTHX_ SV *sv)
3879 ATOMIC_INC(SvREFCNT(sv));
3886 Free the memory used by an SV.
3892 Perl_sv_free(pTHX_ SV *sv)
3895 int refcount_is_zero;
3899 if (SvREFCNT(sv) == 0) {
3900 if (SvFLAGS(sv) & SVf_BREAK)
3902 if (PL_in_clean_all) /* All is fair */
3904 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3905 /* make sure SvREFCNT(sv)==0 happens very seldom */
3906 SvREFCNT(sv) = (~(U32)0)/2;
3909 if (ckWARN_d(WARN_INTERNAL))
3910 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3913 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3914 if (!refcount_is_zero)
3918 if (ckWARN_d(WARN_DEBUGGING))
3919 Perl_warner(aTHX_ WARN_DEBUGGING,
3920 "Attempt to free temp prematurely: SV 0x%"UVxf,
3925 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3926 /* make sure SvREFCNT(sv)==0 happens very seldom */
3927 SvREFCNT(sv) = (~(U32)0)/2;
3938 Returns the length of the string in the SV. See also C<SvCUR>.
3944 Perl_sv_len(pTHX_ register SV *sv)
3953 len = mg_length(sv);
3955 junk = SvPV(sv, len);
3960 =for apidoc sv_len_utf8
3962 Returns the number of characters in the string in an SV, counting wide
3963 UTF8 bytes as a single character.
3969 Perl_sv_len_utf8(pTHX_ register SV *sv)
3980 len = mg_length(sv);
3983 s = (U8*)SvPV(sv, len);
3994 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
3999 I32 uoffset = *offsetp;
4005 start = s = (U8*)SvPV(sv, len);
4007 while (s < send && uoffset--)
4011 *offsetp = s - start;
4015 while (s < send && ulen--)
4025 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4034 s = (U8*)SvPV(sv, len);
4036 Perl_croak(aTHX_ "panic: bad byte offset");
4037 send = s + *offsetp;
4045 if (ckWARN_d(WARN_UTF8))
4046 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4056 Returns a boolean indicating whether the strings in the two SVs are
4063 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4070 bool pv1tmp = FALSE;
4071 bool pv2tmp = FALSE;
4078 pv1 = SvPV(sv1, cur1);
4085 pv2 = SvPV(sv2, cur2);
4087 /* do not utf8ize the comparands as a side-effect */
4088 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE && 0) {
4090 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4094 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4100 eq = memEQ(pv1, pv2, cur1);
4113 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4114 string in C<sv1> is less than, equal to, or greater than the string in
4121 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4126 bool pv1tmp = FALSE;
4127 bool pv2tmp = FALSE;
4134 pv1 = SvPV(sv1, cur1);
4141 pv2 = SvPV(sv2, cur2);
4143 /* do not utf8ize the comparands as a side-effect */
4144 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4146 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4150 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4156 cmp = cur2 ? -1 : 0;
4160 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4163 cmp = retval < 0 ? -1 : 1;
4164 } else if (cur1 == cur2) {
4167 cmp = cur1 < cur2 ? -1 : 1;
4180 =for apidoc sv_cmp_locale
4182 Compares the strings in two SVs in a locale-aware manner. See
4189 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4191 #ifdef USE_LOCALE_COLLATE
4197 if (PL_collation_standard)
4201 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4203 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4205 if (!pv1 || !len1) {
4216 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4219 return retval < 0 ? -1 : 1;
4222 * When the result of collation is equality, that doesn't mean
4223 * that there are no differences -- some locales exclude some
4224 * characters from consideration. So to avoid false equalities,
4225 * we use the raw string as a tiebreaker.
4231 #endif /* USE_LOCALE_COLLATE */
4233 return sv_cmp(sv1, sv2);
4236 #ifdef USE_LOCALE_COLLATE
4238 * Any scalar variable may carry an 'o' magic that contains the
4239 * scalar data of the variable transformed to such a format that
4240 * a normal memory comparison can be used to compare the data
4241 * according to the locale settings.
4244 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4248 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4249 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4254 Safefree(mg->mg_ptr);
4256 if ((xf = mem_collxfrm(s, len, &xlen))) {
4257 if (SvREADONLY(sv)) {
4260 return xf + sizeof(PL_collation_ix);
4263 sv_magic(sv, 0, 'o', 0, 0);
4264 mg = mg_find(sv, 'o');
4277 if (mg && mg->mg_ptr) {
4279 return mg->mg_ptr + sizeof(PL_collation_ix);
4287 #endif /* USE_LOCALE_COLLATE */
4292 Get a line from the filehandle and store it into the SV, optionally
4293 appending to the currently-stored string.
4299 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4304 register STDCHAR rslast;
4305 register STDCHAR *bp;
4309 SV_CHECK_THINKFIRST(sv);
4310 (void)SvUPGRADE(sv, SVt_PV);
4314 if (RsSNARF(PL_rs)) {
4318 else if (RsRECORD(PL_rs)) {
4319 I32 recsize, bytesread;
4322 /* Grab the size of the record we're getting */
4323 recsize = SvIV(SvRV(PL_rs));
4324 (void)SvPOK_only(sv); /* Validate pointer */
4325 buffer = SvGROW(sv, recsize + 1);
4328 /* VMS wants read instead of fread, because fread doesn't respect */
4329 /* RMS record boundaries. This is not necessarily a good thing to be */
4330 /* doing, but we've got no other real choice */
4331 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4333 bytesread = PerlIO_read(fp, buffer, recsize);
4335 SvCUR_set(sv, bytesread);
4336 buffer[bytesread] = '\0';
4337 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4339 else if (RsPARA(PL_rs)) {
4344 rsptr = SvPV(PL_rs, rslen);
4345 rslast = rslen ? rsptr[rslen - 1] : '\0';
4347 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4348 do { /* to make sure file boundaries work right */
4351 i = PerlIO_getc(fp);
4355 PerlIO_ungetc(fp,i);
4361 /* See if we know enough about I/O mechanism to cheat it ! */
4363 /* This used to be #ifdef test - it is made run-time test for ease
4364 of abstracting out stdio interface. One call should be cheap
4365 enough here - and may even be a macro allowing compile
4369 if (PerlIO_fast_gets(fp)) {
4372 * We're going to steal some values from the stdio struct
4373 * and put EVERYTHING in the innermost loop into registers.
4375 register STDCHAR *ptr;
4379 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4380 /* An ungetc()d char is handled separately from the regular
4381 * buffer, so we getc() it back out and stuff it in the buffer.
4383 i = PerlIO_getc(fp);
4384 if (i == EOF) return 0;
4385 *(--((*fp)->_ptr)) = (unsigned char) i;
4389 /* Here is some breathtakingly efficient cheating */
4391 cnt = PerlIO_get_cnt(fp); /* get count into register */
4392 (void)SvPOK_only(sv); /* validate pointer */
4393 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4394 if (cnt > 80 && SvLEN(sv) > append) {
4395 shortbuffered = cnt - SvLEN(sv) + append + 1;
4396 cnt -= shortbuffered;
4400 /* remember that cnt can be negative */
4401 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4406 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4407 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4408 DEBUG_P(PerlIO_printf(Perl_debug_log,
4409 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4410 DEBUG_P(PerlIO_printf(Perl_debug_log,
4411 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4412 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4413 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4418 while (cnt > 0) { /* this | eat */
4420 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4421 goto thats_all_folks; /* screams | sed :-) */
4425 Copy(ptr, bp, cnt, char); /* this | eat */
4426 bp += cnt; /* screams | dust */
4427 ptr += cnt; /* louder | sed :-) */
4432 if (shortbuffered) { /* oh well, must extend */
4433 cnt = shortbuffered;
4435 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4437 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4438 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4442 DEBUG_P(PerlIO_printf(Perl_debug_log,
4443 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4444 PTR2UV(ptr),(long)cnt));
4445 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4446 DEBUG_P(PerlIO_printf(Perl_debug_log,
4447 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4448 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4449 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4450 /* This used to call 'filbuf' in stdio form, but as that behaves like
4451 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4452 another abstraction. */
4453 i = PerlIO_getc(fp); /* get more characters */
4454 DEBUG_P(PerlIO_printf(Perl_debug_log,
4455 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4456 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4457 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4458 cnt = PerlIO_get_cnt(fp);
4459 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4460 DEBUG_P(PerlIO_printf(Perl_debug_log,
4461 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4463 if (i == EOF) /* all done for ever? */
4464 goto thats_really_all_folks;
4466 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4468 SvGROW(sv, bpx + cnt + 2);
4469 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4471 *bp++ = i; /* store character from PerlIO_getc */
4473 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4474 goto thats_all_folks;
4478 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4479 memNE((char*)bp - rslen, rsptr, rslen))
4480 goto screamer; /* go back to the fray */
4481 thats_really_all_folks:
4483 cnt += shortbuffered;
4484 DEBUG_P(PerlIO_printf(Perl_debug_log,
4485 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4486 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4487 DEBUG_P(PerlIO_printf(Perl_debug_log,
4488 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4489 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4490 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4492 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4493 DEBUG_P(PerlIO_printf(Perl_debug_log,
4494 "Screamer: done, len=%ld, string=|%.*s|\n",
4495 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4500 /*The big, slow, and stupid way */
4503 /* Need to work around EPOC SDK features */
4504 /* On WINS: MS VC5 generates calls to _chkstk, */
4505 /* if a `large' stack frame is allocated */
4506 /* gcc on MARM does not generate calls like these */
4512 register STDCHAR *bpe = buf + sizeof(buf);
4514 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4515 ; /* keep reading */
4519 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4520 /* Accomodate broken VAXC compiler, which applies U8 cast to
4521 * both args of ?: operator, causing EOF to change into 255
4523 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4527 sv_catpvn(sv, (char *) buf, cnt);
4529 sv_setpvn(sv, (char *) buf, cnt);
4531 if (i != EOF && /* joy */
4533 SvCUR(sv) < rslen ||
4534 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4538 * If we're reading from a TTY and we get a short read,
4539 * indicating that the user hit his EOF character, we need
4540 * to notice it now, because if we try to read from the TTY
4541 * again, the EOF condition will disappear.
4543 * The comparison of cnt to sizeof(buf) is an optimization
4544 * that prevents unnecessary calls to feof().
4548 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4553 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4554 while (i != EOF) { /* to make sure file boundaries work right */
4555 i = PerlIO_getc(fp);
4557 PerlIO_ungetc(fp,i);
4563 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4570 Auto-increment of the value in the SV.
4576 Perl_sv_inc(pTHX_ register SV *sv)
4585 if (SvTHINKFIRST(sv)) {
4586 if (SvREADONLY(sv)) {
4588 if (PL_curcop != &PL_compiling)
4589 Perl_croak(aTHX_ PL_no_modify);
4593 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4595 i = PTR2IV(SvRV(sv));
4600 flags = SvFLAGS(sv);
4601 if (flags & SVp_NOK) {
4602 (void)SvNOK_only(sv);
4606 if (flags & SVp_IOK) {
4608 if (SvUVX(sv) == UV_MAX)
4609 sv_setnv(sv, (NV)UV_MAX + 1.0);
4611 (void)SvIOK_only_UV(sv);
4614 if (SvIVX(sv) == IV_MAX)
4615 sv_setnv(sv, (NV)IV_MAX + 1.0);
4617 (void)SvIOK_only(sv);
4623 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4624 if ((flags & SVTYPEMASK) < SVt_PVNV)
4625 sv_upgrade(sv, SVt_NV);
4627 (void)SvNOK_only(sv);
4631 while (isALPHA(*d)) d++;
4632 while (isDIGIT(*d)) d++;
4634 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4638 while (d >= SvPVX(sv)) {
4646 /* MKS: The original code here died if letters weren't consecutive.
4647 * at least it didn't have to worry about non-C locales. The
4648 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4649 * arranged in order (although not consecutively) and that only
4650 * [A-Za-z] are accepted by isALPHA in the C locale.
4652 if (*d != 'z' && *d != 'Z') {
4653 do { ++*d; } while (!isALPHA(*d));
4656 *(d--) -= 'z' - 'a';
4661 *(d--) -= 'z' - 'a' + 1;
4665 /* oh,oh, the number grew */
4666 SvGROW(sv, SvCUR(sv) + 2);
4668 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4679 Auto-decrement of the value in the SV.
4685 Perl_sv_dec(pTHX_ register SV *sv)
4693 if (SvTHINKFIRST(sv)) {
4694 if (SvREADONLY(sv)) {
4696 if (PL_curcop != &PL_compiling)
4697 Perl_croak(aTHX_ PL_no_modify);
4701 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4703 i = PTR2IV(SvRV(sv));
4708 flags = SvFLAGS(sv);
4709 if (flags & SVp_NOK) {
4711 (void)SvNOK_only(sv);
4714 if (flags & SVp_IOK) {
4716 if (SvUVX(sv) == 0) {
4717 (void)SvIOK_only(sv);
4721 (void)SvIOK_only_UV(sv);
4725 if (SvIVX(sv) == IV_MIN)
4726 sv_setnv(sv, (NV)IV_MIN - 1.0);
4728 (void)SvIOK_only(sv);
4734 if (!(flags & SVp_POK)) {
4735 if ((flags & SVTYPEMASK) < SVt_PVNV)
4736 sv_upgrade(sv, SVt_NV);
4738 (void)SvNOK_only(sv);
4741 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4745 =for apidoc sv_mortalcopy
4747 Creates a new SV which is a copy of the original SV. The new SV is marked
4753 /* Make a string that will exist for the duration of the expression
4754 * evaluation. Actually, it may have to last longer than that, but
4755 * hopefully we won't free it until it has been assigned to a
4756 * permanent location. */
4759 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4765 sv_setsv(sv,oldstr);
4767 PL_tmps_stack[++PL_tmps_ix] = sv;
4773 =for apidoc sv_newmortal
4775 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4781 Perl_sv_newmortal(pTHX)
4787 SvFLAGS(sv) = SVs_TEMP;
4789 PL_tmps_stack[++PL_tmps_ix] = sv;
4794 =for apidoc sv_2mortal
4796 Marks an SV as mortal. The SV will be destroyed when the current context
4802 /* same thing without the copying */
4805 Perl_sv_2mortal(pTHX_ register SV *sv)
4810 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4813 PL_tmps_stack[++PL_tmps_ix] = sv;
4821 Creates a new SV and copies a string into it. The reference count for the
4822 SV is set to 1. If C<len> is zero, Perl will compute the length using
4823 strlen(). For efficiency, consider using C<newSVpvn> instead.
4829 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4836 sv_setpvn(sv,s,len);
4841 =for apidoc newSVpvn
4843 Creates a new SV and copies a string into it. The reference count for the
4844 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4845 string. You are responsible for ensuring that the source string is at least
4852 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4857 sv_setpvn(sv,s,len);
4862 =for apidoc newSVpvn_share
4864 Creates a new SV and populates it with a string from
4865 the string table. Turns on READONLY and FAKE.
4866 The idea here is that as string table is used for shared hash
4867 keys these strings will have SvPVX == HeKEY and hash lookup
4868 will avoid string compare.
4874 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4878 PERL_HASH(hash, src, len);
4880 sv_upgrade(sv, SVt_PVIV);
4881 SvPVX(sv) = sharepvn(src, len, hash);
4891 #if defined(PERL_IMPLICIT_CONTEXT)
4893 Perl_newSVpvf_nocontext(const char* pat, ...)
4898 va_start(args, pat);
4899 sv = vnewSVpvf(pat, &args);
4906 =for apidoc newSVpvf
4908 Creates a new SV an initialize it with the string formatted like
4915 Perl_newSVpvf(pTHX_ const char* pat, ...)
4919 va_start(args, pat);
4920 sv = vnewSVpvf(pat, &args);
4926 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4930 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4937 Creates a new SV and copies a floating point value into it.
4938 The reference count for the SV is set to 1.
4944 Perl_newSVnv(pTHX_ NV n)
4956 Creates a new SV and copies an integer into it. The reference count for the
4963 Perl_newSViv(pTHX_ IV i)
4975 Creates a new SV and copies an unsigned integer into it.
4976 The reference count for the SV is set to 1.
4982 Perl_newSVuv(pTHX_ UV u)
4992 =for apidoc newRV_noinc
4994 Creates an RV wrapper for an SV. The reference count for the original
4995 SV is B<not> incremented.
5001 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5007 sv_upgrade(sv, SVt_RV);
5014 /* newRV_inc is #defined to newRV in sv.h */
5016 Perl_newRV(pTHX_ SV *tmpRef)
5018 return newRV_noinc(SvREFCNT_inc(tmpRef));
5024 Creates a new SV which is an exact duplicate of the original SV.
5029 /* make an exact duplicate of old */
5032 Perl_newSVsv(pTHX_ register SV *old)
5039 if (SvTYPE(old) == SVTYPEMASK) {
5040 if (ckWARN_d(WARN_INTERNAL))
5041 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5056 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5064 char todo[PERL_UCHAR_MAX+1];
5069 if (!*s) { /* reset ?? searches */
5070 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5071 pm->op_pmdynflags &= ~PMdf_USED;
5076 /* reset variables */
5078 if (!HvARRAY(stash))
5081 Zero(todo, 256, char);
5083 i = (unsigned char)*s;
5087 max = (unsigned char)*s++;
5088 for ( ; i <= max; i++) {
5091 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5092 for (entry = HvARRAY(stash)[i];
5094 entry = HeNEXT(entry))
5096 if (!todo[(U8)*HeKEY(entry)])
5098 gv = (GV*)HeVAL(entry);
5100 if (SvTHINKFIRST(sv)) {
5101 if (!SvREADONLY(sv) && SvROK(sv))
5106 if (SvTYPE(sv) >= SVt_PV) {
5108 if (SvPVX(sv) != Nullch)
5115 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5117 #ifndef VMS /* VMS has no environ array */
5119 environ[0] = Nullch;
5128 Perl_sv_2io(pTHX_ SV *sv)
5134 switch (SvTYPE(sv)) {
5142 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5146 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5148 return sv_2io(SvRV(sv));
5149 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5155 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5162 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5169 return *gvp = Nullgv, Nullcv;
5170 switch (SvTYPE(sv)) {
5190 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5191 tryAMAGICunDEREF(to_cv);
5194 if (SvTYPE(sv) == SVt_PVCV) {
5203 Perl_croak(aTHX_ "Not a subroutine reference");
5208 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5214 if (lref && !GvCVu(gv)) {
5217 tmpsv = NEWSV(704,0);
5218 gv_efullname3(tmpsv, gv, Nullch);
5219 /* XXX this is probably not what they think they're getting.
5220 * It has the same effect as "sub name;", i.e. just a forward
5222 newSUB(start_subparse(FALSE, 0),
5223 newSVOP(OP_CONST, 0, tmpsv),
5228 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5237 Returns true if the SV has a true value by Perl's rules.
5243 Perl_sv_true(pTHX_ register SV *sv)
5250 if ((tXpv = (XPV*)SvANY(sv)) &&
5251 (tXpv->xpv_cur > 1 ||
5252 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5259 return SvIVX(sv) != 0;
5262 return SvNVX(sv) != 0.0;
5264 return sv_2bool(sv);
5270 Perl_sv_iv(pTHX_ register SV *sv)
5274 return (IV)SvUVX(sv);
5281 Perl_sv_uv(pTHX_ register SV *sv)
5286 return (UV)SvIVX(sv);
5292 Perl_sv_nv(pTHX_ register SV *sv)
5300 Perl_sv_pv(pTHX_ SV *sv)
5307 return sv_2pv(sv, &n_a);
5311 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5317 return sv_2pv(sv, lp);
5321 =for apidoc sv_pvn_force
5323 Get a sensible string out of the SV somehow.
5329 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5333 if (SvTHINKFIRST(sv) && !SvROK(sv))
5334 sv_force_normal(sv);
5340 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5342 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5343 PL_op_name[PL_op->op_type]);
5347 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5352 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5353 SvGROW(sv, len + 1);
5354 Move(s,SvPVX(sv),len,char);
5359 SvPOK_on(sv); /* validate pointer */
5361 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5362 PTR2UV(sv),SvPVX(sv)));
5369 Perl_sv_pvbyte(pTHX_ SV *sv)
5375 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5377 return sv_pvn(sv,lp);
5381 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5383 return sv_pvn_force(sv,lp);
5387 Perl_sv_pvutf8(pTHX_ SV *sv)
5389 sv_utf8_upgrade(sv);
5394 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5396 sv_utf8_upgrade(sv);
5397 return sv_pvn(sv,lp);
5401 =for apidoc sv_pvutf8n_force
5403 Get a sensible UTF8-encoded string out of the SV somehow. See
5410 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5412 sv_utf8_upgrade(sv);
5413 return sv_pvn_force(sv,lp);
5417 =for apidoc sv_reftype
5419 Returns a string describing what the SV is a reference to.
5425 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5427 if (ob && SvOBJECT(sv))
5428 return HvNAME(SvSTASH(sv));
5430 switch (SvTYPE(sv)) {
5444 case SVt_PVLV: return "LVALUE";
5445 case SVt_PVAV: return "ARRAY";
5446 case SVt_PVHV: return "HASH";
5447 case SVt_PVCV: return "CODE";
5448 case SVt_PVGV: return "GLOB";
5449 case SVt_PVFM: return "FORMAT";
5450 case SVt_PVIO: return "IO";
5451 default: return "UNKNOWN";
5457 =for apidoc sv_isobject
5459 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5460 object. If the SV is not an RV, or if the object is not blessed, then this
5467 Perl_sv_isobject(pTHX_ SV *sv)
5484 Returns a boolean indicating whether the SV is blessed into the specified
5485 class. This does not check for subtypes; use C<sv_derived_from> to verify
5486 an inheritance relationship.
5492 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5504 return strEQ(HvNAME(SvSTASH(sv)), name);
5510 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5511 it will be upgraded to one. If C<classname> is non-null then the new SV will
5512 be blessed in the specified package. The new SV is returned and its
5513 reference count is 1.
5519 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5526 SV_CHECK_THINKFIRST(rv);
5529 if (SvTYPE(rv) >= SVt_PVMG) {
5530 U32 refcnt = SvREFCNT(rv);
5534 SvREFCNT(rv) = refcnt;
5537 if (SvTYPE(rv) < SVt_RV)
5538 sv_upgrade(rv, SVt_RV);
5539 else if (SvTYPE(rv) > SVt_RV) {
5540 (void)SvOOK_off(rv);
5541 if (SvPVX(rv) && SvLEN(rv))
5542 Safefree(SvPVX(rv));
5552 HV* stash = gv_stashpv(classname, TRUE);
5553 (void)sv_bless(rv, stash);
5559 =for apidoc sv_setref_pv
5561 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5562 argument will be upgraded to an RV. That RV will be modified to point to
5563 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5564 into the SV. The C<classname> argument indicates the package for the
5565 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5566 will be returned and will have a reference count of 1.
5568 Do not use with other Perl types such as HV, AV, SV, CV, because those
5569 objects will become corrupted by the pointer copy process.
5571 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5577 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5580 sv_setsv(rv, &PL_sv_undef);
5584 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5589 =for apidoc sv_setref_iv
5591 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5592 argument will be upgraded to an RV. That RV will be modified to point to
5593 the new SV. The C<classname> argument indicates the package for the
5594 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5595 will be returned and will have a reference count of 1.
5601 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5603 sv_setiv(newSVrv(rv,classname), iv);
5608 =for apidoc sv_setref_nv
5610 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5611 argument will be upgraded to an RV. That RV will be modified to point to
5612 the new SV. The C<classname> argument indicates the package for the
5613 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5614 will be returned and will have a reference count of 1.
5620 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5622 sv_setnv(newSVrv(rv,classname), nv);
5627 =for apidoc sv_setref_pvn
5629 Copies a string into a new SV, optionally blessing the SV. The length of the
5630 string must be specified with C<n>. The C<rv> argument will be upgraded to
5631 an RV. That RV will be modified to point to the new SV. The C<classname>
5632 argument indicates the package for the blessing. Set C<classname> to
5633 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5634 a reference count of 1.
5636 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5642 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5644 sv_setpvn(newSVrv(rv,classname), pv, n);
5649 =for apidoc sv_bless
5651 Blesses an SV into a specified package. The SV must be an RV. The package
5652 must be designated by its stash (see C<gv_stashpv()>). The reference count
5653 of the SV is unaffected.
5659 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5664 Perl_croak(aTHX_ "Can't bless non-reference value");
5666 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5667 if (SvREADONLY(tmpRef))
5668 Perl_croak(aTHX_ PL_no_modify);
5669 if (SvOBJECT(tmpRef)) {
5670 if (SvTYPE(tmpRef) != SVt_PVIO)
5672 SvREFCNT_dec(SvSTASH(tmpRef));
5675 SvOBJECT_on(tmpRef);
5676 if (SvTYPE(tmpRef) != SVt_PVIO)
5678 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5679 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5690 S_sv_unglob(pTHX_ SV *sv)
5694 assert(SvTYPE(sv) == SVt_PVGV);
5699 SvREFCNT_dec(GvSTASH(sv));
5700 GvSTASH(sv) = Nullhv;
5702 sv_unmagic(sv, '*');
5703 Safefree(GvNAME(sv));
5706 /* need to keep SvANY(sv) in the right arena */
5707 xpvmg = new_XPVMG();
5708 StructCopy(SvANY(sv), xpvmg, XPVMG);
5709 del_XPVGV(SvANY(sv));
5712 SvFLAGS(sv) &= ~SVTYPEMASK;
5713 SvFLAGS(sv) |= SVt_PVMG;
5717 =for apidoc sv_unref
5719 Unsets the RV status of the SV, and decrements the reference count of
5720 whatever was being referenced by the RV. This can almost be thought of
5721 as a reversal of C<newSVrv>. See C<SvROK_off>.
5727 Perl_sv_unref(pTHX_ SV *sv)
5731 if (SvWEAKREF(sv)) {
5739 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5742 sv_2mortal(rv); /* Schedule for freeing later */
5746 Perl_sv_taint(pTHX_ SV *sv)
5748 sv_magic((sv), Nullsv, 't', Nullch, 0);
5752 Perl_sv_untaint(pTHX_ SV *sv)
5754 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5755 MAGIC *mg = mg_find(sv, 't');
5762 Perl_sv_tainted(pTHX_ SV *sv)
5764 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5765 MAGIC *mg = mg_find(sv, 't');
5766 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5773 =for apidoc sv_setpviv
5775 Copies an integer into the given SV, also updating its string value.
5776 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5782 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5784 char buf[TYPE_CHARS(UV)];
5786 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5788 sv_setpvn(sv, ptr, ebuf - ptr);
5793 =for apidoc sv_setpviv_mg
5795 Like C<sv_setpviv>, but also handles 'set' magic.
5801 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5803 char buf[TYPE_CHARS(UV)];
5805 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5807 sv_setpvn(sv, ptr, ebuf - ptr);
5811 #if defined(PERL_IMPLICIT_CONTEXT)
5813 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5817 va_start(args, pat);
5818 sv_vsetpvf(sv, pat, &args);
5824 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5828 va_start(args, pat);
5829 sv_vsetpvf_mg(sv, pat, &args);
5835 =for apidoc sv_setpvf
5837 Processes its arguments like C<sprintf> and sets an SV to the formatted
5838 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5844 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5847 va_start(args, pat);
5848 sv_vsetpvf(sv, pat, &args);
5853 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5855 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5859 =for apidoc sv_setpvf_mg
5861 Like C<sv_setpvf>, but also handles 'set' magic.
5867 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5870 va_start(args, pat);
5871 sv_vsetpvf_mg(sv, pat, &args);
5876 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5878 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5882 #if defined(PERL_IMPLICIT_CONTEXT)
5884 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5888 va_start(args, pat);
5889 sv_vcatpvf(sv, pat, &args);
5894 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5898 va_start(args, pat);
5899 sv_vcatpvf_mg(sv, pat, &args);
5905 =for apidoc sv_catpvf
5907 Processes its arguments like C<sprintf> and appends the formatted output
5908 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5909 typically be called after calling this function to handle 'set' magic.
5915 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5918 va_start(args, pat);
5919 sv_vcatpvf(sv, pat, &args);
5924 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5926 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5930 =for apidoc sv_catpvf_mg
5932 Like C<sv_catpvf>, but also handles 'set' magic.
5938 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5941 va_start(args, pat);
5942 sv_vcatpvf_mg(sv, pat, &args);
5947 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5949 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5954 =for apidoc sv_vsetpvfn
5956 Works like C<vcatpvfn> but copies the text into the SV instead of
5963 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5965 sv_setpvn(sv, "", 0);
5966 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5970 =for apidoc sv_vcatpvfn
5972 Processes its arguments like C<vsprintf> and appends the formatted output
5973 to an SV. Uses an array of SVs if the C style variable argument list is
5974 missing (NULL). When running with taint checks enabled, indicates via
5975 C<maybe_tainted> if results are untrustworthy (often due to the use of
5982 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5990 static char nullstr[] = "(null)";
5993 /* no matter what, this is a string now */
5994 (void)SvPV_force(sv, origlen);
5996 /* special-case "", "%s", and "%_" */
5999 if (patlen == 2 && pat[0] == '%') {
6003 char *s = va_arg(*args, char*);
6004 sv_catpv(sv, s ? s : nullstr);
6006 else if (svix < svmax) {
6007 sv_catsv(sv, *svargs);
6008 if (DO_UTF8(*svargs))
6014 argsv = va_arg(*args, SV*);
6015 sv_catsv(sv, argsv);
6020 /* See comment on '_' below */
6025 patend = (char*)pat + patlen;
6026 for (p = (char*)pat; p < patend; p = q) {
6029 bool vectorize = FALSE;
6036 bool has_precis = FALSE;
6038 bool is_utf = FALSE;
6041 U8 utf8buf[UTF8_MAXLEN];
6042 STRLEN esignlen = 0;
6044 char *eptr = Nullch;
6046 /* Times 4: a decimal digit takes more than 3 binary digits.
6047 * NV_DIG: mantissa takes than many decimal digits.
6048 * Plus 32: Playing safe. */
6049 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6050 /* large enough for "%#.#f" --chip */
6051 /* what about long double NVs? --jhi */
6054 U8 *vecstr = Null(U8*);
6066 STRLEN dotstrlen = 1;
6068 for (q = p; q < patend && *q != '%'; ++q) ;
6070 sv_catpvn(sv, p, q - p);
6099 case '*': /* printf("%*vX",":",$ipv6addr) */
6104 vecsv = va_arg(*args, SV*);
6105 else if (svix < svmax)
6106 vecsv = svargs[svix++];
6109 dotstr = SvPVx(vecsv,dotstrlen);
6128 case '1': case '2': case '3':
6129 case '4': case '5': case '6':
6130 case '7': case '8': case '9':
6133 width = width * 10 + (*q++ - '0');
6138 i = va_arg(*args, int);
6140 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6142 width = (i < 0) ? -i : i;
6153 i = va_arg(*args, int);
6155 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6156 precis = (i < 0) ? 0 : i;
6162 precis = precis * 10 + (*q++ - '0');
6169 vecsv = va_arg(*args, SV*);
6170 vecstr = (U8*)SvPVx(vecsv,veclen);
6171 utf = DO_UTF8(vecsv);
6173 else if (svix < svmax) {
6174 vecsv = svargs[svix++];
6175 vecstr = (U8*)SvPVx(vecsv,veclen);
6176 utf = DO_UTF8(vecsv);
6187 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6198 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6199 if (*(q + 1) == 'l') { /* lld, llf */
6226 uv = va_arg(*args, int);
6228 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6229 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6230 eptr = (char*)utf8buf;
6231 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6243 eptr = va_arg(*args, char*);
6245 #ifdef MACOS_TRADITIONAL
6246 /* On MacOS, %#s format is used for Pascal strings */
6251 elen = strlen(eptr);
6254 elen = sizeof nullstr - 1;
6257 else if (svix < svmax) {
6258 argsv = svargs[svix++];
6259 eptr = SvPVx(argsv, elen);
6260 if (DO_UTF8(argsv)) {
6261 if (has_precis && precis < elen) {
6263 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6266 if (width) { /* fudge width (can't fudge elen) */
6267 width += elen - sv_len_utf8(argsv);
6276 * The "%_" hack might have to be changed someday,
6277 * if ISO or ANSI decide to use '_' for something.
6278 * So we keep it hidden from users' code.
6282 argsv = va_arg(*args,SV*);
6283 eptr = SvPVx(argsv, elen);
6289 if (has_precis && elen > precis)
6299 uv = PTR2UV(va_arg(*args, void*));
6301 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
6321 iv = (IV)utf8_to_uv(vecstr, &ulen, 0);
6331 case 'h': iv = (short)va_arg(*args, int); break;
6332 default: iv = va_arg(*args, int); break;
6333 case 'l': iv = va_arg(*args, long); break;
6334 case 'V': iv = va_arg(*args, IV); break;
6336 case 'q': iv = va_arg(*args, Quad_t); break;
6341 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6343 case 'h': iv = (short)iv; break;
6345 case 'l': iv = (long)iv; break;
6348 case 'q': iv = (Quad_t)iv; break;
6355 esignbuf[esignlen++] = plus;
6359 esignbuf[esignlen++] = '-';
6403 uv = utf8_to_uv(vecstr, &ulen, 0);
6413 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6414 default: uv = va_arg(*args, unsigned); break;
6415 case 'l': uv = va_arg(*args, unsigned long); break;
6416 case 'V': uv = va_arg(*args, UV); break;
6418 case 'q': uv = va_arg(*args, Quad_t); break;
6423 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6425 case 'h': uv = (unsigned short)uv; break;
6427 case 'l': uv = (unsigned long)uv; break;
6430 case 'q': uv = (Quad_t)uv; break;
6436 eptr = ebuf + sizeof ebuf;
6442 p = (char*)((c == 'X')
6443 ? "0123456789ABCDEF" : "0123456789abcdef");
6449 esignbuf[esignlen++] = '0';
6450 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6456 *--eptr = '0' + dig;
6458 if (alt && *eptr != '0')
6464 *--eptr = '0' + dig;
6467 esignbuf[esignlen++] = '0';
6468 esignbuf[esignlen++] = 'b';
6471 default: /* it had better be ten or less */
6472 #if defined(PERL_Y2KWARN)
6473 if (ckWARN(WARN_Y2K)) {
6475 char *s = SvPV(sv,n);
6476 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6477 && (n == 2 || !isDIGIT(s[n-3])))
6479 Perl_warner(aTHX_ WARN_Y2K,
6480 "Possible Y2K bug: %%%c %s",
6481 c, "format string following '19'");
6487 *--eptr = '0' + dig;
6488 } while (uv /= base);
6491 elen = (ebuf + sizeof ebuf) - eptr;
6494 zeros = precis - elen;
6495 else if (precis == 0 && elen == 1 && *eptr == '0')
6500 /* FLOATING POINT */
6503 c = 'f'; /* maybe %F isn't supported here */
6509 /* This is evil, but floating point is even more evil */
6513 nv = va_arg(*args, NV);
6515 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6518 if (c != 'e' && c != 'E') {
6520 (void)Perl_frexp(nv, &i);
6521 if (i == PERL_INT_MIN)
6522 Perl_die(aTHX_ "panic: frexp");
6524 need = BIT_DIGITS(i);
6526 need += has_precis ? precis : 6; /* known default */
6530 need += 20; /* fudge factor */
6531 if (PL_efloatsize < need) {
6532 Safefree(PL_efloatbuf);
6533 PL_efloatsize = need + 20; /* more fudge */
6534 New(906, PL_efloatbuf, PL_efloatsize, char);
6535 PL_efloatbuf[0] = '\0';
6538 eptr = ebuf + sizeof ebuf;
6541 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6543 /* Copy the one or more characters in a long double
6544 * format before the 'base' ([efgEFG]) character to
6545 * the format string. */
6546 static char const prifldbl[] = PERL_PRIfldbl;
6547 char const *p = prifldbl + sizeof(prifldbl) - 3;
6548 while (p >= prifldbl) { *--eptr = *p--; }
6553 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6558 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6571 STORE_NUMERIC_STANDARD_SET_LOCAL();
6572 #ifdef USE_LOCALE_NUMERIC
6573 if (!was_standard && maybe_tainted)
6574 *maybe_tainted = TRUE;
6576 (void)sprintf(PL_efloatbuf, eptr, nv);
6577 RESTORE_NUMERIC_STANDARD();
6580 eptr = PL_efloatbuf;
6581 elen = strlen(PL_efloatbuf);
6588 i = SvCUR(sv) - origlen;
6591 case 'h': *(va_arg(*args, short*)) = i; break;
6592 default: *(va_arg(*args, int*)) = i; break;
6593 case 'l': *(va_arg(*args, long*)) = i; break;
6594 case 'V': *(va_arg(*args, IV*)) = i; break;
6596 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6600 else if (svix < svmax)
6601 sv_setuv_mg(svargs[svix++], (UV)i);
6602 continue; /* not "break" */
6609 if (!args && ckWARN(WARN_PRINTF) &&
6610 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6611 SV *msg = sv_newmortal();
6612 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6613 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6616 Perl_sv_catpvf(aTHX_ msg,
6617 "\"%%%c\"", c & 0xFF);
6619 Perl_sv_catpvf(aTHX_ msg,
6620 "\"%%\\%03"UVof"\"",
6623 sv_catpv(msg, "end of string");
6624 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6627 /* output mangled stuff ... */
6633 /* ... right here, because formatting flags should not apply */
6634 SvGROW(sv, SvCUR(sv) + elen + 1);
6636 memcpy(p, eptr, elen);
6639 SvCUR(sv) = p - SvPVX(sv);
6640 continue; /* not "break" */
6643 have = esignlen + zeros + elen;
6644 need = (have > width ? have : width);
6647 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6649 if (esignlen && fill == '0') {
6650 for (i = 0; i < esignlen; i++)
6654 memset(p, fill, gap);
6657 if (esignlen && fill != '0') {
6658 for (i = 0; i < esignlen; i++)
6662 for (i = zeros; i; i--)
6666 memcpy(p, eptr, elen);
6670 memset(p, ' ', gap);
6675 memcpy(p, dotstr, dotstrlen);
6679 vectorize = FALSE; /* done iterating over vecstr */
6684 SvCUR(sv) = p - SvPVX(sv);
6692 #if defined(USE_ITHREADS)
6694 #if defined(USE_THREADS)
6695 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6698 #ifndef GpREFCNT_inc
6699 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6703 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6704 #define av_dup(s) (AV*)sv_dup((SV*)s)
6705 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6706 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6707 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6708 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6709 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6710 #define io_dup(s) (IO*)sv_dup((SV*)s)
6711 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6712 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6713 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6714 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6715 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6718 Perl_re_dup(pTHX_ REGEXP *r)
6720 /* XXX fix when pmop->op_pmregexp becomes shared */
6721 return ReREFCNT_inc(r);
6725 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6729 return (PerlIO*)NULL;
6731 /* look for it in the table first */
6732 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6736 /* create anew and remember what it is */
6737 ret = PerlIO_fdupopen(fp);
6738 ptr_table_store(PL_ptr_table, fp, ret);
6743 Perl_dirp_dup(pTHX_ DIR *dp)
6752 Perl_gp_dup(pTHX_ GP *gp)
6757 /* look for it in the table first */
6758 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6762 /* create anew and remember what it is */
6763 Newz(0, ret, 1, GP);
6764 ptr_table_store(PL_ptr_table, gp, ret);
6767 ret->gp_refcnt = 0; /* must be before any other dups! */
6768 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6769 ret->gp_io = io_dup_inc(gp->gp_io);
6770 ret->gp_form = cv_dup_inc(gp->gp_form);
6771 ret->gp_av = av_dup_inc(gp->gp_av);
6772 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6773 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6774 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6775 ret->gp_cvgen = gp->gp_cvgen;
6776 ret->gp_flags = gp->gp_flags;
6777 ret->gp_line = gp->gp_line;
6778 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6783 Perl_mg_dup(pTHX_ MAGIC *mg)
6785 MAGIC *mgret = (MAGIC*)NULL;
6788 return (MAGIC*)NULL;
6789 /* look for it in the table first */
6790 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6794 for (; mg; mg = mg->mg_moremagic) {
6796 Newz(0, nmg, 1, MAGIC);
6800 mgprev->mg_moremagic = nmg;
6801 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6802 nmg->mg_private = mg->mg_private;
6803 nmg->mg_type = mg->mg_type;
6804 nmg->mg_flags = mg->mg_flags;
6805 if (mg->mg_type == 'r') {
6806 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6809 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6810 ? sv_dup_inc(mg->mg_obj)
6811 : sv_dup(mg->mg_obj);
6813 nmg->mg_len = mg->mg_len;
6814 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6815 if (mg->mg_ptr && mg->mg_type != 'g') {
6816 if (mg->mg_len >= 0) {
6817 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6818 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6819 AMT *amtp = (AMT*)mg->mg_ptr;
6820 AMT *namtp = (AMT*)nmg->mg_ptr;
6822 for (i = 1; i < NofAMmeth; i++) {
6823 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6827 else if (mg->mg_len == HEf_SVKEY)
6828 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6836 Perl_ptr_table_new(pTHX)
6839 Newz(0, tbl, 1, PTR_TBL_t);
6842 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6847 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6849 PTR_TBL_ENT_t *tblent;
6850 UV hash = PTR2UV(sv);
6852 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6853 for (; tblent; tblent = tblent->next) {
6854 if (tblent->oldval == sv)
6855 return tblent->newval;
6861 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6863 PTR_TBL_ENT_t *tblent, **otblent;
6864 /* XXX this may be pessimal on platforms where pointers aren't good
6865 * hash values e.g. if they grow faster in the most significant
6867 UV hash = PTR2UV(oldv);
6871 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6872 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6873 if (tblent->oldval == oldv) {
6874 tblent->newval = newv;
6879 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6880 tblent->oldval = oldv;
6881 tblent->newval = newv;
6882 tblent->next = *otblent;
6885 if (i && tbl->tbl_items > tbl->tbl_max)
6886 ptr_table_split(tbl);
6890 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6892 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6893 UV oldsize = tbl->tbl_max + 1;
6894 UV newsize = oldsize * 2;
6897 Renew(ary, newsize, PTR_TBL_ENT_t*);
6898 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6899 tbl->tbl_max = --newsize;
6901 for (i=0; i < oldsize; i++, ary++) {
6902 PTR_TBL_ENT_t **curentp, **entp, *ent;
6905 curentp = ary + oldsize;
6906 for (entp = ary, ent = *ary; ent; ent = *entp) {
6907 if ((newsize & PTR2UV(ent->oldval)) != i) {
6909 ent->next = *curentp;
6924 Perl_sv_dup(pTHX_ SV *sstr)
6928 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6930 /* look for it in the table first */
6931 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6935 /* create anew and remember what it is */
6937 ptr_table_store(PL_ptr_table, sstr, dstr);
6940 SvFLAGS(dstr) = SvFLAGS(sstr);
6941 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6942 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6945 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6946 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6947 PL_watch_pvx, SvPVX(sstr));
6950 switch (SvTYPE(sstr)) {
6955 SvANY(dstr) = new_XIV();
6956 SvIVX(dstr) = SvIVX(sstr);
6959 SvANY(dstr) = new_XNV();
6960 SvNVX(dstr) = SvNVX(sstr);
6963 SvANY(dstr) = new_XRV();
6964 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6967 SvANY(dstr) = new_XPV();
6968 SvCUR(dstr) = SvCUR(sstr);
6969 SvLEN(dstr) = SvLEN(sstr);
6971 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6972 else if (SvPVX(sstr) && SvLEN(sstr))
6973 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6975 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6978 SvANY(dstr) = new_XPVIV();
6979 SvCUR(dstr) = SvCUR(sstr);
6980 SvLEN(dstr) = SvLEN(sstr);
6981 SvIVX(dstr) = SvIVX(sstr);
6983 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6984 else if (SvPVX(sstr) && SvLEN(sstr))
6985 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6987 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6990 SvANY(dstr) = new_XPVNV();
6991 SvCUR(dstr) = SvCUR(sstr);
6992 SvLEN(dstr) = SvLEN(sstr);
6993 SvIVX(dstr) = SvIVX(sstr);
6994 SvNVX(dstr) = SvNVX(sstr);
6996 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6997 else if (SvPVX(sstr) && SvLEN(sstr))
6998 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7000 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7003 SvANY(dstr) = new_XPVMG();
7004 SvCUR(dstr) = SvCUR(sstr);
7005 SvLEN(dstr) = SvLEN(sstr);
7006 SvIVX(dstr) = SvIVX(sstr);
7007 SvNVX(dstr) = SvNVX(sstr);
7008 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7009 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7011 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7012 else if (SvPVX(sstr) && SvLEN(sstr))
7013 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7015 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7018 SvANY(dstr) = new_XPVBM();
7019 SvCUR(dstr) = SvCUR(sstr);
7020 SvLEN(dstr) = SvLEN(sstr);
7021 SvIVX(dstr) = SvIVX(sstr);
7022 SvNVX(dstr) = SvNVX(sstr);
7023 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7024 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7026 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7027 else if (SvPVX(sstr) && SvLEN(sstr))
7028 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7030 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7031 BmRARE(dstr) = BmRARE(sstr);
7032 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7033 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7036 SvANY(dstr) = new_XPVLV();
7037 SvCUR(dstr) = SvCUR(sstr);
7038 SvLEN(dstr) = SvLEN(sstr);
7039 SvIVX(dstr) = SvIVX(sstr);
7040 SvNVX(dstr) = SvNVX(sstr);
7041 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7042 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7044 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7045 else if (SvPVX(sstr) && SvLEN(sstr))
7046 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7048 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7049 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7050 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7051 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7052 LvTYPE(dstr) = LvTYPE(sstr);
7055 SvANY(dstr) = new_XPVGV();
7056 SvCUR(dstr) = SvCUR(sstr);
7057 SvLEN(dstr) = SvLEN(sstr);
7058 SvIVX(dstr) = SvIVX(sstr);
7059 SvNVX(dstr) = SvNVX(sstr);
7060 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7061 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7063 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7064 else if (SvPVX(sstr) && SvLEN(sstr))
7065 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7067 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7068 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7069 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7070 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7071 GvFLAGS(dstr) = GvFLAGS(sstr);
7072 GvGP(dstr) = gp_dup(GvGP(sstr));
7073 (void)GpREFCNT_inc(GvGP(dstr));
7076 SvANY(dstr) = new_XPVIO();
7077 SvCUR(dstr) = SvCUR(sstr);
7078 SvLEN(dstr) = SvLEN(sstr);
7079 SvIVX(dstr) = SvIVX(sstr);
7080 SvNVX(dstr) = SvNVX(sstr);
7081 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7082 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7084 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7085 else if (SvPVX(sstr) && SvLEN(sstr))
7086 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7088 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7089 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7090 if (IoOFP(sstr) == IoIFP(sstr))
7091 IoOFP(dstr) = IoIFP(dstr);
7093 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7094 /* PL_rsfp_filters entries have fake IoDIRP() */
7095 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7096 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7098 IoDIRP(dstr) = IoDIRP(sstr);
7099 IoLINES(dstr) = IoLINES(sstr);
7100 IoPAGE(dstr) = IoPAGE(sstr);
7101 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7102 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7103 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7104 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7105 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7106 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7107 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7108 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7109 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7110 IoTYPE(dstr) = IoTYPE(sstr);
7111 IoFLAGS(dstr) = IoFLAGS(sstr);
7114 SvANY(dstr) = new_XPVAV();
7115 SvCUR(dstr) = SvCUR(sstr);
7116 SvLEN(dstr) = SvLEN(sstr);
7117 SvIVX(dstr) = SvIVX(sstr);
7118 SvNVX(dstr) = SvNVX(sstr);
7119 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7120 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7121 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7122 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7123 if (AvARRAY((AV*)sstr)) {
7124 SV **dst_ary, **src_ary;
7125 SSize_t items = AvFILLp((AV*)sstr) + 1;
7127 src_ary = AvARRAY((AV*)sstr);
7128 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7129 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7130 SvPVX(dstr) = (char*)dst_ary;
7131 AvALLOC((AV*)dstr) = dst_ary;
7132 if (AvREAL((AV*)sstr)) {
7134 *dst_ary++ = sv_dup_inc(*src_ary++);
7138 *dst_ary++ = sv_dup(*src_ary++);
7140 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7141 while (items-- > 0) {
7142 *dst_ary++ = &PL_sv_undef;
7146 SvPVX(dstr) = Nullch;
7147 AvALLOC((AV*)dstr) = (SV**)NULL;
7151 SvANY(dstr) = new_XPVHV();
7152 SvCUR(dstr) = SvCUR(sstr);
7153 SvLEN(dstr) = SvLEN(sstr);
7154 SvIVX(dstr) = SvIVX(sstr);
7155 SvNVX(dstr) = SvNVX(sstr);
7156 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7157 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7158 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7159 if (HvARRAY((HV*)sstr)) {
7161 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7162 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7163 Newz(0, dxhv->xhv_array,
7164 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7165 while (i <= sxhv->xhv_max) {
7166 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7167 !!HvSHAREKEYS(sstr));
7170 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7173 SvPVX(dstr) = Nullch;
7174 HvEITER((HV*)dstr) = (HE*)NULL;
7176 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7177 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7180 SvANY(dstr) = new_XPVFM();
7181 FmLINES(dstr) = FmLINES(sstr);
7185 SvANY(dstr) = new_XPVCV();
7187 SvCUR(dstr) = SvCUR(sstr);
7188 SvLEN(dstr) = SvLEN(sstr);
7189 SvIVX(dstr) = SvIVX(sstr);
7190 SvNVX(dstr) = SvNVX(sstr);
7191 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7192 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7193 if (SvPVX(sstr) && SvLEN(sstr))
7194 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7196 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7197 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7198 CvSTART(dstr) = CvSTART(sstr);
7199 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7200 CvXSUB(dstr) = CvXSUB(sstr);
7201 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7202 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7203 CvDEPTH(dstr) = CvDEPTH(sstr);
7204 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7205 /* XXX padlists are real, but pretend to be not */
7206 AvREAL_on(CvPADLIST(sstr));
7207 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7208 AvREAL_off(CvPADLIST(sstr));
7209 AvREAL_off(CvPADLIST(dstr));
7212 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7213 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7214 CvFLAGS(dstr) = CvFLAGS(sstr);
7217 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7221 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7228 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7233 return (PERL_CONTEXT*)NULL;
7235 /* look for it in the table first */
7236 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7240 /* create anew and remember what it is */
7241 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7242 ptr_table_store(PL_ptr_table, cxs, ncxs);
7245 PERL_CONTEXT *cx = &cxs[ix];
7246 PERL_CONTEXT *ncx = &ncxs[ix];
7247 ncx->cx_type = cx->cx_type;
7248 if (CxTYPE(cx) == CXt_SUBST) {
7249 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7252 ncx->blk_oldsp = cx->blk_oldsp;
7253 ncx->blk_oldcop = cx->blk_oldcop;
7254 ncx->blk_oldretsp = cx->blk_oldretsp;
7255 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7256 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7257 ncx->blk_oldpm = cx->blk_oldpm;
7258 ncx->blk_gimme = cx->blk_gimme;
7259 switch (CxTYPE(cx)) {
7261 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7262 ? cv_dup_inc(cx->blk_sub.cv)
7263 : cv_dup(cx->blk_sub.cv));
7264 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7265 ? av_dup_inc(cx->blk_sub.argarray)
7267 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7268 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7269 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7270 ncx->blk_sub.lval = cx->blk_sub.lval;
7273 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7274 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7275 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7276 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7277 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7280 ncx->blk_loop.label = cx->blk_loop.label;
7281 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7282 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7283 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7284 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7285 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7286 ? cx->blk_loop.iterdata
7287 : gv_dup((GV*)cx->blk_loop.iterdata));
7288 ncx->blk_loop.oldcurpad
7289 = (SV**)ptr_table_fetch(PL_ptr_table,
7290 cx->blk_loop.oldcurpad);
7291 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7292 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7293 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7294 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7295 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7298 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7299 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7300 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7301 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7314 Perl_si_dup(pTHX_ PERL_SI *si)
7319 return (PERL_SI*)NULL;
7321 /* look for it in the table first */
7322 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7326 /* create anew and remember what it is */
7327 Newz(56, nsi, 1, PERL_SI);
7328 ptr_table_store(PL_ptr_table, si, nsi);
7330 nsi->si_stack = av_dup_inc(si->si_stack);
7331 nsi->si_cxix = si->si_cxix;
7332 nsi->si_cxmax = si->si_cxmax;
7333 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7334 nsi->si_type = si->si_type;
7335 nsi->si_prev = si_dup(si->si_prev);
7336 nsi->si_next = si_dup(si->si_next);
7337 nsi->si_markoff = si->si_markoff;
7342 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7343 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7344 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7345 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7346 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7347 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7348 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7349 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7350 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7351 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7352 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7353 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7356 #define pv_dup_inc(p) SAVEPV(p)
7357 #define pv_dup(p) SAVEPV(p)
7358 #define svp_dup_inc(p,pp) any_dup(p,pp)
7361 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7368 /* look for it in the table first */
7369 ret = ptr_table_fetch(PL_ptr_table, v);
7373 /* see if it is part of the interpreter structure */
7374 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7375 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7383 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7385 ANY *ss = proto_perl->Tsavestack;
7386 I32 ix = proto_perl->Tsavestack_ix;
7387 I32 max = proto_perl->Tsavestack_max;
7400 void (*dptr) (void*);
7401 void (*dxptr) (pTHXo_ void*);
7404 Newz(54, nss, max, ANY);
7410 case SAVEt_ITEM: /* normal string */
7411 sv = (SV*)POPPTR(ss,ix);
7412 TOPPTR(nss,ix) = sv_dup_inc(sv);
7413 sv = (SV*)POPPTR(ss,ix);
7414 TOPPTR(nss,ix) = sv_dup_inc(sv);
7416 case SAVEt_SV: /* scalar reference */
7417 sv = (SV*)POPPTR(ss,ix);
7418 TOPPTR(nss,ix) = sv_dup_inc(sv);
7419 gv = (GV*)POPPTR(ss,ix);
7420 TOPPTR(nss,ix) = gv_dup_inc(gv);
7422 case SAVEt_GENERIC_PVREF: /* generic char* */
7423 c = (char*)POPPTR(ss,ix);
7424 TOPPTR(nss,ix) = pv_dup(c);
7425 ptr = POPPTR(ss,ix);
7426 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7428 case SAVEt_GENERIC_SVREF: /* generic sv */
7429 case SAVEt_SVREF: /* scalar reference */
7430 sv = (SV*)POPPTR(ss,ix);
7431 TOPPTR(nss,ix) = sv_dup_inc(sv);
7432 ptr = POPPTR(ss,ix);
7433 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7435 case SAVEt_AV: /* array reference */
7436 av = (AV*)POPPTR(ss,ix);
7437 TOPPTR(nss,ix) = av_dup_inc(av);
7438 gv = (GV*)POPPTR(ss,ix);
7439 TOPPTR(nss,ix) = gv_dup(gv);
7441 case SAVEt_HV: /* hash reference */
7442 hv = (HV*)POPPTR(ss,ix);
7443 TOPPTR(nss,ix) = hv_dup_inc(hv);
7444 gv = (GV*)POPPTR(ss,ix);
7445 TOPPTR(nss,ix) = gv_dup(gv);
7447 case SAVEt_INT: /* int reference */
7448 ptr = POPPTR(ss,ix);
7449 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7450 intval = (int)POPINT(ss,ix);
7451 TOPINT(nss,ix) = intval;
7453 case SAVEt_LONG: /* long reference */
7454 ptr = POPPTR(ss,ix);
7455 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7456 longval = (long)POPLONG(ss,ix);
7457 TOPLONG(nss,ix) = longval;
7459 case SAVEt_I32: /* I32 reference */
7460 case SAVEt_I16: /* I16 reference */
7461 case SAVEt_I8: /* I8 reference */
7462 ptr = POPPTR(ss,ix);
7463 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7467 case SAVEt_IV: /* IV reference */
7468 ptr = POPPTR(ss,ix);
7469 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7473 case SAVEt_SPTR: /* SV* reference */
7474 ptr = POPPTR(ss,ix);
7475 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7476 sv = (SV*)POPPTR(ss,ix);
7477 TOPPTR(nss,ix) = sv_dup(sv);
7479 case SAVEt_VPTR: /* random* reference */
7480 ptr = POPPTR(ss,ix);
7481 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7482 ptr = POPPTR(ss,ix);
7483 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7485 case SAVEt_PPTR: /* char* reference */
7486 ptr = POPPTR(ss,ix);
7487 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7488 c = (char*)POPPTR(ss,ix);
7489 TOPPTR(nss,ix) = pv_dup(c);
7491 case SAVEt_HPTR: /* HV* reference */
7492 ptr = POPPTR(ss,ix);
7493 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7494 hv = (HV*)POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = hv_dup(hv);
7497 case SAVEt_APTR: /* AV* reference */
7498 ptr = POPPTR(ss,ix);
7499 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7500 av = (AV*)POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = av_dup(av);
7504 gv = (GV*)POPPTR(ss,ix);
7505 TOPPTR(nss,ix) = gv_dup(gv);
7507 case SAVEt_GP: /* scalar reference */
7508 gp = (GP*)POPPTR(ss,ix);
7509 TOPPTR(nss,ix) = gp = gp_dup(gp);
7510 (void)GpREFCNT_inc(gp);
7511 gv = (GV*)POPPTR(ss,ix);
7512 TOPPTR(nss,ix) = gv_dup_inc(c);
7513 c = (char*)POPPTR(ss,ix);
7514 TOPPTR(nss,ix) = pv_dup(c);
7521 sv = (SV*)POPPTR(ss,ix);
7522 TOPPTR(nss,ix) = sv_dup_inc(sv);
7525 ptr = POPPTR(ss,ix);
7526 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7527 /* these are assumed to be refcounted properly */
7528 switch (((OP*)ptr)->op_type) {
7535 TOPPTR(nss,ix) = ptr;
7540 TOPPTR(nss,ix) = Nullop;
7545 TOPPTR(nss,ix) = Nullop;
7548 c = (char*)POPPTR(ss,ix);
7549 TOPPTR(nss,ix) = pv_dup_inc(c);
7552 longval = POPLONG(ss,ix);
7553 TOPLONG(nss,ix) = longval;
7556 hv = (HV*)POPPTR(ss,ix);
7557 TOPPTR(nss,ix) = hv_dup_inc(hv);
7558 c = (char*)POPPTR(ss,ix);
7559 TOPPTR(nss,ix) = pv_dup_inc(c);
7563 case SAVEt_DESTRUCTOR:
7564 ptr = POPPTR(ss,ix);
7565 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7566 dptr = POPDPTR(ss,ix);
7567 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7569 case SAVEt_DESTRUCTOR_X:
7570 ptr = POPPTR(ss,ix);
7571 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7572 dxptr = POPDXPTR(ss,ix);
7573 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7575 case SAVEt_REGCONTEXT:
7581 case SAVEt_STACK_POS: /* Position on Perl stack */
7585 case SAVEt_AELEM: /* array element */
7586 sv = (SV*)POPPTR(ss,ix);
7587 TOPPTR(nss,ix) = sv_dup_inc(sv);
7590 av = (AV*)POPPTR(ss,ix);
7591 TOPPTR(nss,ix) = av_dup_inc(av);
7593 case SAVEt_HELEM: /* hash element */
7594 sv = (SV*)POPPTR(ss,ix);
7595 TOPPTR(nss,ix) = sv_dup_inc(sv);
7596 sv = (SV*)POPPTR(ss,ix);
7597 TOPPTR(nss,ix) = sv_dup_inc(sv);
7598 hv = (HV*)POPPTR(ss,ix);
7599 TOPPTR(nss,ix) = hv_dup_inc(hv);
7602 ptr = POPPTR(ss,ix);
7603 TOPPTR(nss,ix) = ptr;
7610 av = (AV*)POPPTR(ss,ix);
7611 TOPPTR(nss,ix) = av_dup(av);
7614 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7626 perl_clone(PerlInterpreter *proto_perl, UV flags)
7629 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7632 #ifdef PERL_IMPLICIT_SYS
7633 return perl_clone_using(proto_perl, flags,
7635 proto_perl->IMemShared,
7636 proto_perl->IMemParse,
7646 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7647 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7648 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7649 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7650 struct IPerlDir* ipD, struct IPerlSock* ipS,
7651 struct IPerlProc* ipP)
7653 /* XXX many of the string copies here can be optimized if they're
7654 * constants; they need to be allocated as common memory and just
7655 * their pointers copied. */
7659 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7661 PERL_SET_THX(pPerl);
7662 # else /* !PERL_OBJECT */
7663 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7664 PERL_SET_THX(my_perl);
7667 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7672 # else /* !DEBUGGING */
7673 Zero(my_perl, 1, PerlInterpreter);
7674 # endif /* DEBUGGING */
7678 PL_MemShared = ipMS;
7686 # endif /* PERL_OBJECT */
7687 #else /* !PERL_IMPLICIT_SYS */
7689 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7690 PERL_SET_THX(my_perl);
7693 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7698 # else /* !DEBUGGING */
7699 Zero(my_perl, 1, PerlInterpreter);
7700 # endif /* DEBUGGING */
7701 #endif /* PERL_IMPLICIT_SYS */
7704 PL_xiv_arenaroot = NULL;
7706 PL_xnv_arenaroot = NULL;
7708 PL_xrv_arenaroot = NULL;
7710 PL_xpv_arenaroot = NULL;
7712 PL_xpviv_arenaroot = NULL;
7713 PL_xpviv_root = NULL;
7714 PL_xpvnv_arenaroot = NULL;
7715 PL_xpvnv_root = NULL;
7716 PL_xpvcv_arenaroot = NULL;
7717 PL_xpvcv_root = NULL;
7718 PL_xpvav_arenaroot = NULL;
7719 PL_xpvav_root = NULL;
7720 PL_xpvhv_arenaroot = NULL;
7721 PL_xpvhv_root = NULL;
7722 PL_xpvmg_arenaroot = NULL;
7723 PL_xpvmg_root = NULL;
7724 PL_xpvlv_arenaroot = NULL;
7725 PL_xpvlv_root = NULL;
7726 PL_xpvbm_arenaroot = NULL;
7727 PL_xpvbm_root = NULL;
7728 PL_he_arenaroot = NULL;
7730 PL_nice_chunk = NULL;
7731 PL_nice_chunk_size = 0;
7734 PL_sv_root = Nullsv;
7735 PL_sv_arenaroot = Nullsv;
7737 PL_debug = proto_perl->Idebug;
7739 /* create SV map for pointer relocation */
7740 PL_ptr_table = ptr_table_new();
7742 /* initialize these special pointers as early as possible */
7743 SvANY(&PL_sv_undef) = NULL;
7744 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7745 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7746 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7749 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7751 SvANY(&PL_sv_no) = new_XPVNV();
7753 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7754 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7755 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7756 SvCUR(&PL_sv_no) = 0;
7757 SvLEN(&PL_sv_no) = 1;
7758 SvNVX(&PL_sv_no) = 0;
7759 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7762 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7764 SvANY(&PL_sv_yes) = new_XPVNV();
7766 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7767 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7768 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7769 SvCUR(&PL_sv_yes) = 1;
7770 SvLEN(&PL_sv_yes) = 2;
7771 SvNVX(&PL_sv_yes) = 1;
7772 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7774 /* create shared string table */
7775 PL_strtab = newHV();
7776 HvSHAREKEYS_off(PL_strtab);
7777 hv_ksplit(PL_strtab, 512);
7778 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7780 PL_compiling = proto_perl->Icompiling;
7781 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7782 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7783 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7784 if (!specialWARN(PL_compiling.cop_warnings))
7785 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7786 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7788 /* pseudo environmental stuff */
7789 PL_origargc = proto_perl->Iorigargc;
7791 New(0, PL_origargv, i+1, char*);
7792 PL_origargv[i] = '\0';
7794 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7796 PL_envgv = gv_dup(proto_perl->Ienvgv);
7797 PL_incgv = gv_dup(proto_perl->Iincgv);
7798 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7799 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7800 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7801 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7804 PL_minus_c = proto_perl->Iminus_c;
7805 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7806 PL_localpatches = proto_perl->Ilocalpatches;
7807 PL_splitstr = proto_perl->Isplitstr;
7808 PL_preprocess = proto_perl->Ipreprocess;
7809 PL_minus_n = proto_perl->Iminus_n;
7810 PL_minus_p = proto_perl->Iminus_p;
7811 PL_minus_l = proto_perl->Iminus_l;
7812 PL_minus_a = proto_perl->Iminus_a;
7813 PL_minus_F = proto_perl->Iminus_F;
7814 PL_doswitches = proto_perl->Idoswitches;
7815 PL_dowarn = proto_perl->Idowarn;
7816 PL_doextract = proto_perl->Idoextract;
7817 PL_sawampersand = proto_perl->Isawampersand;
7818 PL_unsafe = proto_perl->Iunsafe;
7819 PL_inplace = SAVEPV(proto_perl->Iinplace);
7820 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7821 PL_perldb = proto_perl->Iperldb;
7822 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7824 /* magical thingies */
7825 /* XXX time(&PL_basetime) when asked for? */
7826 PL_basetime = proto_perl->Ibasetime;
7827 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7829 PL_maxsysfd = proto_perl->Imaxsysfd;
7830 PL_multiline = proto_perl->Imultiline;
7831 PL_statusvalue = proto_perl->Istatusvalue;
7833 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7836 /* shortcuts to various I/O objects */
7837 PL_stdingv = gv_dup(proto_perl->Istdingv);
7838 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7839 PL_defgv = gv_dup(proto_perl->Idefgv);
7840 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7841 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7842 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7844 /* shortcuts to regexp stuff */
7845 PL_replgv = gv_dup(proto_perl->Ireplgv);
7847 /* shortcuts to misc objects */
7848 PL_errgv = gv_dup(proto_perl->Ierrgv);
7850 /* shortcuts to debugging objects */
7851 PL_DBgv = gv_dup(proto_perl->IDBgv);
7852 PL_DBline = gv_dup(proto_perl->IDBline);
7853 PL_DBsub = gv_dup(proto_perl->IDBsub);
7854 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7855 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7856 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7857 PL_lineary = av_dup(proto_perl->Ilineary);
7858 PL_dbargs = av_dup(proto_perl->Idbargs);
7861 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7862 PL_curstash = hv_dup(proto_perl->Tcurstash);
7863 PL_debstash = hv_dup(proto_perl->Idebstash);
7864 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7865 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7867 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7868 PL_endav = av_dup_inc(proto_perl->Iendav);
7869 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7870 PL_initav = av_dup_inc(proto_perl->Iinitav);
7872 PL_sub_generation = proto_perl->Isub_generation;
7874 /* funky return mechanisms */
7875 PL_forkprocess = proto_perl->Iforkprocess;
7877 /* subprocess state */
7878 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7880 /* internal state */
7881 PL_tainting = proto_perl->Itainting;
7882 PL_maxo = proto_perl->Imaxo;
7883 if (proto_perl->Iop_mask)
7884 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7886 PL_op_mask = Nullch;
7888 /* current interpreter roots */
7889 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7890 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7891 PL_main_start = proto_perl->Imain_start;
7892 PL_eval_root = proto_perl->Ieval_root;
7893 PL_eval_start = proto_perl->Ieval_start;
7895 /* runtime control stuff */
7896 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7897 PL_copline = proto_perl->Icopline;
7899 PL_filemode = proto_perl->Ifilemode;
7900 PL_lastfd = proto_perl->Ilastfd;
7901 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7904 PL_gensym = proto_perl->Igensym;
7905 PL_preambled = proto_perl->Ipreambled;
7906 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7907 PL_laststatval = proto_perl->Ilaststatval;
7908 PL_laststype = proto_perl->Ilaststype;
7909 PL_mess_sv = Nullsv;
7911 PL_orslen = proto_perl->Iorslen;
7912 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7913 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7915 /* interpreter atexit processing */
7916 PL_exitlistlen = proto_perl->Iexitlistlen;
7917 if (PL_exitlistlen) {
7918 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7919 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7922 PL_exitlist = (PerlExitListEntry*)NULL;
7923 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7925 PL_profiledata = NULL;
7926 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7927 /* PL_rsfp_filters entries have fake IoDIRP() */
7928 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7930 PL_compcv = cv_dup(proto_perl->Icompcv);
7931 PL_comppad = av_dup(proto_perl->Icomppad);
7932 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7933 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7934 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7935 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7936 proto_perl->Tcurpad);
7938 #ifdef HAVE_INTERP_INTERN
7939 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7942 /* more statics moved here */
7943 PL_generation = proto_perl->Igeneration;
7944 PL_DBcv = cv_dup(proto_perl->IDBcv);
7946 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7947 PL_in_clean_all = proto_perl->Iin_clean_all;
7949 PL_uid = proto_perl->Iuid;
7950 PL_euid = proto_perl->Ieuid;
7951 PL_gid = proto_perl->Igid;
7952 PL_egid = proto_perl->Iegid;
7953 PL_nomemok = proto_perl->Inomemok;
7954 PL_an = proto_perl->Ian;
7955 PL_cop_seqmax = proto_perl->Icop_seqmax;
7956 PL_op_seqmax = proto_perl->Iop_seqmax;
7957 PL_evalseq = proto_perl->Ievalseq;
7958 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7959 PL_origalen = proto_perl->Iorigalen;
7960 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7961 PL_osname = SAVEPV(proto_perl->Iosname);
7962 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7963 PL_sighandlerp = proto_perl->Isighandlerp;
7966 PL_runops = proto_perl->Irunops;
7968 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7971 PL_cshlen = proto_perl->Icshlen;
7972 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7975 PL_lex_state = proto_perl->Ilex_state;
7976 PL_lex_defer = proto_perl->Ilex_defer;
7977 PL_lex_expect = proto_perl->Ilex_expect;
7978 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7979 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7980 PL_lex_starts = proto_perl->Ilex_starts;
7981 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7982 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7983 PL_lex_op = proto_perl->Ilex_op;
7984 PL_lex_inpat = proto_perl->Ilex_inpat;
7985 PL_lex_inwhat = proto_perl->Ilex_inwhat;
7986 PL_lex_brackets = proto_perl->Ilex_brackets;
7987 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
7988 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
7989 PL_lex_casemods = proto_perl->Ilex_casemods;
7990 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
7991 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
7993 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
7994 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
7995 PL_nexttoke = proto_perl->Inexttoke;
7997 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
7998 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
7999 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8000 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8001 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8002 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8003 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8004 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8005 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8006 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8007 PL_pending_ident = proto_perl->Ipending_ident;
8008 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8010 PL_expect = proto_perl->Iexpect;
8012 PL_multi_start = proto_perl->Imulti_start;
8013 PL_multi_end = proto_perl->Imulti_end;
8014 PL_multi_open = proto_perl->Imulti_open;
8015 PL_multi_close = proto_perl->Imulti_close;
8017 PL_error_count = proto_perl->Ierror_count;
8018 PL_subline = proto_perl->Isubline;
8019 PL_subname = sv_dup_inc(proto_perl->Isubname);
8021 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8022 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8023 PL_padix = proto_perl->Ipadix;
8024 PL_padix_floor = proto_perl->Ipadix_floor;
8025 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8027 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8028 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8029 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8030 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8031 PL_last_lop_op = proto_perl->Ilast_lop_op;
8032 PL_in_my = proto_perl->Iin_my;
8033 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8035 PL_cryptseen = proto_perl->Icryptseen;
8038 PL_hints = proto_perl->Ihints;
8040 PL_amagic_generation = proto_perl->Iamagic_generation;
8042 #ifdef USE_LOCALE_COLLATE
8043 PL_collation_ix = proto_perl->Icollation_ix;
8044 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8045 PL_collation_standard = proto_perl->Icollation_standard;
8046 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8047 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8048 #endif /* USE_LOCALE_COLLATE */
8050 #ifdef USE_LOCALE_NUMERIC
8051 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8052 PL_numeric_standard = proto_perl->Inumeric_standard;
8053 PL_numeric_local = proto_perl->Inumeric_local;
8054 PL_numeric_radix = proto_perl->Inumeric_radix;
8055 #endif /* !USE_LOCALE_NUMERIC */
8057 /* utf8 character classes */
8058 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8059 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8060 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8061 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8062 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8063 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8064 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8065 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8066 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8067 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8068 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8069 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8070 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8071 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8072 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8073 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8074 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8077 PL_last_swash_hv = Nullhv; /* reinits on demand */
8078 PL_last_swash_klen = 0;
8079 PL_last_swash_key[0]= '\0';
8080 PL_last_swash_tmps = (U8*)NULL;
8081 PL_last_swash_slen = 0;
8083 /* perly.c globals */
8084 PL_yydebug = proto_perl->Iyydebug;
8085 PL_yynerrs = proto_perl->Iyynerrs;
8086 PL_yyerrflag = proto_perl->Iyyerrflag;
8087 PL_yychar = proto_perl->Iyychar;
8088 PL_yyval = proto_perl->Iyyval;
8089 PL_yylval = proto_perl->Iyylval;
8091 PL_glob_index = proto_perl->Iglob_index;
8092 PL_srand_called = proto_perl->Isrand_called;
8093 PL_uudmap['M'] = 0; /* reinits on demand */
8094 PL_bitcount = Nullch; /* reinits on demand */
8096 if (proto_perl->Ipsig_ptr) {
8097 int sig_num[] = { SIG_NUM };
8098 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8099 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8100 for (i = 1; PL_sig_name[i]; i++) {
8101 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8102 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8106 PL_psig_ptr = (SV**)NULL;
8107 PL_psig_name = (SV**)NULL;
8110 /* thrdvar.h stuff */
8113 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8114 PL_tmps_ix = proto_perl->Ttmps_ix;
8115 PL_tmps_max = proto_perl->Ttmps_max;
8116 PL_tmps_floor = proto_perl->Ttmps_floor;
8117 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8119 while (i <= PL_tmps_ix) {
8120 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8124 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8125 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8126 Newz(54, PL_markstack, i, I32);
8127 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8128 - proto_perl->Tmarkstack);
8129 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8130 - proto_perl->Tmarkstack);
8131 Copy(proto_perl->Tmarkstack, PL_markstack,
8132 PL_markstack_ptr - PL_markstack + 1, I32);
8134 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8135 * NOTE: unlike the others! */
8136 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8137 PL_scopestack_max = proto_perl->Tscopestack_max;
8138 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8139 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8141 /* next push_return() sets PL_retstack[PL_retstack_ix]
8142 * NOTE: unlike the others! */
8143 PL_retstack_ix = proto_perl->Tretstack_ix;
8144 PL_retstack_max = proto_perl->Tretstack_max;
8145 Newz(54, PL_retstack, PL_retstack_max, OP*);
8146 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8148 /* NOTE: si_dup() looks at PL_markstack */
8149 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8151 /* PL_curstack = PL_curstackinfo->si_stack; */
8152 PL_curstack = av_dup(proto_perl->Tcurstack);
8153 PL_mainstack = av_dup(proto_perl->Tmainstack);
8155 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8156 PL_stack_base = AvARRAY(PL_curstack);
8157 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8158 - proto_perl->Tstack_base);
8159 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8161 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8162 * NOTE: unlike the others! */
8163 PL_savestack_ix = proto_perl->Tsavestack_ix;
8164 PL_savestack_max = proto_perl->Tsavestack_max;
8165 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8166 PL_savestack = ss_dup(proto_perl);
8170 ENTER; /* perl_destruct() wants to LEAVE; */
8173 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8174 PL_top_env = &PL_start_env;
8176 PL_op = proto_perl->Top;
8179 PL_Xpv = (XPV*)NULL;
8180 PL_na = proto_perl->Tna;
8182 PL_statbuf = proto_perl->Tstatbuf;
8183 PL_statcache = proto_perl->Tstatcache;
8184 PL_statgv = gv_dup(proto_perl->Tstatgv);
8185 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8187 PL_timesbuf = proto_perl->Ttimesbuf;
8190 PL_tainted = proto_perl->Ttainted;
8191 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8192 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8193 PL_rs = sv_dup_inc(proto_perl->Trs);
8194 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8195 PL_ofslen = proto_perl->Tofslen;
8196 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8197 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8198 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8199 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8200 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8201 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8203 PL_restartop = proto_perl->Trestartop;
8204 PL_in_eval = proto_perl->Tin_eval;
8205 PL_delaymagic = proto_perl->Tdelaymagic;
8206 PL_dirty = proto_perl->Tdirty;
8207 PL_localizing = proto_perl->Tlocalizing;
8209 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8210 PL_protect = proto_perl->Tprotect;
8212 PL_errors = sv_dup_inc(proto_perl->Terrors);
8213 PL_av_fetch_sv = Nullsv;
8214 PL_hv_fetch_sv = Nullsv;
8215 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8216 PL_modcount = proto_perl->Tmodcount;
8217 PL_lastgotoprobe = Nullop;
8218 PL_dumpindent = proto_perl->Tdumpindent;
8220 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8221 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8222 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8223 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8224 PL_sortcxix = proto_perl->Tsortcxix;
8225 PL_efloatbuf = Nullch; /* reinits on demand */
8226 PL_efloatsize = 0; /* reinits on demand */
8230 PL_screamfirst = NULL;
8231 PL_screamnext = NULL;
8232 PL_maxscream = -1; /* reinits on demand */
8233 PL_lastscream = Nullsv;
8235 PL_watchaddr = NULL;
8236 PL_watchok = Nullch;
8238 PL_regdummy = proto_perl->Tregdummy;
8239 PL_regcomp_parse = Nullch;
8240 PL_regxend = Nullch;
8241 PL_regcode = (regnode*)NULL;
8244 PL_regprecomp = Nullch;
8249 PL_seen_zerolen = 0;
8251 PL_regcomp_rx = (regexp*)NULL;
8253 PL_colorset = 0; /* reinits PL_colors[] */
8254 /*PL_colors[6] = {0,0,0,0,0,0};*/
8255 PL_reg_whilem_seen = 0;
8256 PL_reginput = Nullch;
8259 PL_regstartp = (I32*)NULL;
8260 PL_regendp = (I32*)NULL;
8261 PL_reglastparen = (U32*)NULL;
8262 PL_regtill = Nullch;
8264 PL_reg_start_tmp = (char**)NULL;
8265 PL_reg_start_tmpl = 0;
8266 PL_regdata = (struct reg_data*)NULL;
8269 PL_reg_eval_set = 0;
8271 PL_regprogram = (regnode*)NULL;
8273 PL_regcc = (CURCUR*)NULL;
8274 PL_reg_call_cc = (struct re_cc_state*)NULL;
8275 PL_reg_re = (regexp*)NULL;
8276 PL_reg_ganch = Nullch;
8278 PL_reg_magic = (MAGIC*)NULL;
8280 PL_reg_oldcurpm = (PMOP*)NULL;
8281 PL_reg_curpm = (PMOP*)NULL;
8282 PL_reg_oldsaved = Nullch;
8283 PL_reg_oldsavedlen = 0;
8285 PL_reg_leftiter = 0;
8286 PL_reg_poscache = Nullch;
8287 PL_reg_poscache_size= 0;
8289 /* RE engine - function pointers */
8290 PL_regcompp = proto_perl->Tregcompp;
8291 PL_regexecp = proto_perl->Tregexecp;
8292 PL_regint_start = proto_perl->Tregint_start;
8293 PL_regint_string = proto_perl->Tregint_string;
8294 PL_regfree = proto_perl->Tregfree;
8296 PL_reginterp_cnt = 0;
8297 PL_reg_starttry = 0;
8300 return (PerlInterpreter*)pPerl;
8306 #else /* !USE_ITHREADS */
8312 #endif /* USE_ITHREADS */
8315 do_report_used(pTHXo_ SV *sv)
8317 if (SvTYPE(sv) != SVTYPEMASK) {
8318 PerlIO_printf(Perl_debug_log, "****\n");
8324 do_clean_objs(pTHXo_ SV *sv)
8328 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8329 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8330 if (SvWEAKREF(sv)) {
8341 /* XXX Might want to check arrays, etc. */
8344 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8346 do_clean_named_objs(pTHXo_ SV *sv)
8348 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8349 if ( SvOBJECT(GvSV(sv)) ||
8350 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8351 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8352 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8353 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8355 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8363 do_clean_all(pTHXo_ SV *sv)
8365 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8366 SvFLAGS(sv) |= SVf_BREAK;