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)
2403 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2406 /* This function could be much more efficient if we had a FLAG
2407 * to signal if there are any hibit chars in the string
2410 for (c = s = SvPVX(sv); c < SvEND(sv); c++) {
2416 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2417 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2418 SvCUR(sv) = len - 1;
2419 Safefree(s); /* No longer using what was there before */
2425 =for apidoc sv_utf8_downgrade
2427 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2428 This may not be possible if the PV contains non-byte encoding characters;
2429 if this is the case, either returns false or, if C<fail_ok> is not
2436 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2438 if (SvPOK(sv) && SvUTF8(sv)) {
2439 char *c = SvPVX(sv);
2440 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
2441 if (!utf8_to_bytes((U8*)c, &len)) {
2445 Perl_croak("big byte");
2447 SvCUR(sv) = len - 1;
2454 =for apidoc sv_utf8_encode
2456 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2457 flag so that it looks like bytes again. Nothing calls this.
2463 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2465 sv_utf8_upgrade(sv);
2470 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2474 bool has_utf = FALSE;
2475 if (!sv_utf8_downgrade(sv, TRUE))
2478 /* it is actually just a matter of turning the utf8 flag on, but
2479 * we want to make sure everything inside is valid utf8 first.
2482 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2485 while (c < SvEND(sv)) {
2496 /* Note: sv_setsv() should not be called with a source string that needs
2497 * to be reused, since it may destroy the source string if it is marked
2502 =for apidoc sv_setsv
2504 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2505 The source SV may be destroyed if it is mortal. Does not handle 'set'
2506 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2513 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2516 register U32 sflags;
2522 SV_CHECK_THINKFIRST(dstr);
2524 sstr = &PL_sv_undef;
2525 stype = SvTYPE(sstr);
2526 dtype = SvTYPE(dstr);
2530 /* There's a lot of redundancy below but we're going for speed here */
2535 if (dtype != SVt_PVGV) {
2536 (void)SvOK_off(dstr);
2544 sv_upgrade(dstr, SVt_IV);
2547 sv_upgrade(dstr, SVt_PVNV);
2551 sv_upgrade(dstr, SVt_PVIV);
2554 (void)SvIOK_only(dstr);
2555 SvIVX(dstr) = SvIVX(sstr);
2568 sv_upgrade(dstr, SVt_NV);
2573 sv_upgrade(dstr, SVt_PVNV);
2576 SvNVX(dstr) = SvNVX(sstr);
2577 (void)SvNOK_only(dstr);
2585 sv_upgrade(dstr, SVt_RV);
2586 else if (dtype == SVt_PVGV &&
2587 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2590 if (GvIMPORTED(dstr) != GVf_IMPORTED
2591 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2593 GvIMPORTED_on(dstr);
2604 sv_upgrade(dstr, SVt_PV);
2607 if (dtype < SVt_PVIV)
2608 sv_upgrade(dstr, SVt_PVIV);
2611 if (dtype < SVt_PVNV)
2612 sv_upgrade(dstr, SVt_PVNV);
2619 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2620 PL_op_name[PL_op->op_type]);
2622 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2626 if (dtype <= SVt_PVGV) {
2628 if (dtype != SVt_PVGV) {
2629 char *name = GvNAME(sstr);
2630 STRLEN len = GvNAMELEN(sstr);
2631 sv_upgrade(dstr, SVt_PVGV);
2632 sv_magic(dstr, dstr, '*', Nullch, 0);
2633 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2634 GvNAME(dstr) = savepvn(name, len);
2635 GvNAMELEN(dstr) = len;
2636 SvFAKE_on(dstr); /* can coerce to non-glob */
2638 /* ahem, death to those who redefine active sort subs */
2639 else if (PL_curstackinfo->si_type == PERLSI_SORT
2640 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2641 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2643 (void)SvOK_off(dstr);
2644 GvINTRO_off(dstr); /* one-shot flag */
2646 GvGP(dstr) = gp_ref(GvGP(sstr));
2648 if (GvIMPORTED(dstr) != GVf_IMPORTED
2649 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2651 GvIMPORTED_on(dstr);
2659 if (SvGMAGICAL(sstr)) {
2661 if (SvTYPE(sstr) != stype) {
2662 stype = SvTYPE(sstr);
2663 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2667 if (stype == SVt_PVLV)
2668 (void)SvUPGRADE(dstr, SVt_PVNV);
2670 (void)SvUPGRADE(dstr, stype);
2673 sflags = SvFLAGS(sstr);
2675 if (sflags & SVf_ROK) {
2676 if (dtype >= SVt_PV) {
2677 if (dtype == SVt_PVGV) {
2678 SV *sref = SvREFCNT_inc(SvRV(sstr));
2680 int intro = GvINTRO(dstr);
2685 GvINTRO_off(dstr); /* one-shot flag */
2686 Newz(602,gp, 1, GP);
2687 GvGP(dstr) = gp_ref(gp);
2688 GvSV(dstr) = NEWSV(72,0);
2689 GvLINE(dstr) = CopLINE(PL_curcop);
2690 GvEGV(dstr) = (GV*)dstr;
2693 switch (SvTYPE(sref)) {
2696 SAVESPTR(GvAV(dstr));
2698 dref = (SV*)GvAV(dstr);
2699 GvAV(dstr) = (AV*)sref;
2700 if (!GvIMPORTED_AV(dstr)
2701 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2703 GvIMPORTED_AV_on(dstr);
2708 SAVESPTR(GvHV(dstr));
2710 dref = (SV*)GvHV(dstr);
2711 GvHV(dstr) = (HV*)sref;
2712 if (!GvIMPORTED_HV(dstr)
2713 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2715 GvIMPORTED_HV_on(dstr);
2720 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2721 SvREFCNT_dec(GvCV(dstr));
2722 GvCV(dstr) = Nullcv;
2723 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2724 PL_sub_generation++;
2726 SAVESPTR(GvCV(dstr));
2729 dref = (SV*)GvCV(dstr);
2730 if (GvCV(dstr) != (CV*)sref) {
2731 CV* cv = GvCV(dstr);
2733 if (!GvCVGEN((GV*)dstr) &&
2734 (CvROOT(cv) || CvXSUB(cv)))
2736 SV *const_sv = cv_const_sv(cv);
2737 bool const_changed = TRUE;
2739 const_changed = sv_cmp(const_sv,
2740 op_const_sv(CvSTART((CV*)sref),
2742 /* ahem, death to those who redefine
2743 * active sort subs */
2744 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2745 PL_sortcop == CvSTART(cv))
2747 "Can't redefine active sort subroutine %s",
2748 GvENAME((GV*)dstr));
2749 if ((const_changed && const_sv) || ckWARN(WARN_REDEFINE))
2750 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
2751 "Constant subroutine %s redefined"
2752 : "Subroutine %s redefined",
2753 GvENAME((GV*)dstr));
2755 cv_ckproto(cv, (GV*)dstr,
2756 SvPOK(sref) ? SvPVX(sref) : Nullch);
2758 GvCV(dstr) = (CV*)sref;
2759 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2760 GvASSUMECV_on(dstr);
2761 PL_sub_generation++;
2763 if (!GvIMPORTED_CV(dstr)
2764 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2766 GvIMPORTED_CV_on(dstr);
2771 SAVESPTR(GvIOp(dstr));
2773 dref = (SV*)GvIOp(dstr);
2774 GvIOp(dstr) = (IO*)sref;
2778 SAVESPTR(GvFORM(dstr));
2780 dref = (SV*)GvFORM(dstr);
2781 GvFORM(dstr) = (CV*)sref;
2785 SAVESPTR(GvSV(dstr));
2787 dref = (SV*)GvSV(dstr);
2789 if (!GvIMPORTED_SV(dstr)
2790 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2792 GvIMPORTED_SV_on(dstr);
2804 (void)SvOOK_off(dstr); /* backoff */
2806 Safefree(SvPVX(dstr));
2807 SvLEN(dstr)=SvCUR(dstr)=0;
2810 (void)SvOK_off(dstr);
2811 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2813 if (sflags & SVp_NOK) {
2815 SvNVX(dstr) = SvNVX(sstr);
2817 if (sflags & SVp_IOK) {
2818 (void)SvIOK_on(dstr);
2819 SvIVX(dstr) = SvIVX(sstr);
2820 if (sflags & SVf_IVisUV)
2823 if (SvAMAGIC(sstr)) {
2827 else if (sflags & SVp_POK) {
2830 * Check to see if we can just swipe the string. If so, it's a
2831 * possible small lose on short strings, but a big win on long ones.
2832 * It might even be a win on short strings if SvPVX(dstr)
2833 * has to be allocated and SvPVX(sstr) has to be freed.
2836 if (SvTEMP(sstr) && /* slated for free anyway? */
2837 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2838 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2839 SvLEN(sstr)) /* and really is a string */
2841 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2843 SvFLAGS(dstr) &= ~SVf_OOK;
2844 Safefree(SvPVX(dstr) - SvIVX(dstr));
2846 else if (SvLEN(dstr))
2847 Safefree(SvPVX(dstr));
2849 (void)SvPOK_only(dstr);
2850 SvPV_set(dstr, SvPVX(sstr));
2851 SvLEN_set(dstr, SvLEN(sstr));
2852 SvCUR_set(dstr, SvCUR(sstr));
2855 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2856 SvPV_set(sstr, Nullch);
2861 else { /* have to copy actual string */
2862 STRLEN len = SvCUR(sstr);
2864 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2865 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2866 SvCUR_set(dstr, len);
2867 *SvEND(dstr) = '\0';
2868 (void)SvPOK_only(dstr);
2870 if ((sflags & SVf_UTF8) && !IN_BYTE)
2873 if (sflags & SVp_NOK) {
2875 SvNVX(dstr) = SvNVX(sstr);
2877 if (sflags & SVp_IOK) {
2878 (void)SvIOK_on(dstr);
2879 SvIVX(dstr) = SvIVX(sstr);
2880 if (sflags & SVf_IVisUV)
2884 else if (sflags & SVp_NOK) {
2885 SvNVX(dstr) = SvNVX(sstr);
2886 (void)SvNOK_only(dstr);
2887 if (sflags & SVf_IOK) {
2888 (void)SvIOK_on(dstr);
2889 SvIVX(dstr) = SvIVX(sstr);
2890 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2891 if (sflags & SVf_IVisUV)
2895 else if (sflags & SVp_IOK) {
2896 (void)SvIOK_only(dstr);
2897 SvIVX(dstr) = SvIVX(sstr);
2898 if (sflags & SVf_IVisUV)
2902 if (dtype == SVt_PVGV) {
2903 if (ckWARN(WARN_MISC))
2904 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2907 (void)SvOK_off(dstr);
2913 =for apidoc sv_setsv_mg
2915 Like C<sv_setsv>, but also handles 'set' magic.
2921 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2923 sv_setsv(dstr,sstr);
2928 =for apidoc sv_setpvn
2930 Copies a string into an SV. The C<len> parameter indicates the number of
2931 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2937 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2939 register char *dptr;
2940 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2941 elicit a warning, but it won't hurt. */
2942 SV_CHECK_THINKFIRST(sv);
2947 (void)SvUPGRADE(sv, SVt_PV);
2949 SvGROW(sv, len + 1);
2951 Move(ptr,dptr,len,char);
2954 (void)SvPOK_only(sv); /* validate pointer */
2959 =for apidoc sv_setpvn_mg
2961 Like C<sv_setpvn>, but also handles 'set' magic.
2967 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2969 sv_setpvn(sv,ptr,len);
2974 =for apidoc sv_setpv
2976 Copies a string into an SV. The string must be null-terminated. Does not
2977 handle 'set' magic. See C<sv_setpv_mg>.
2983 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
2985 register STRLEN len;
2987 SV_CHECK_THINKFIRST(sv);
2993 (void)SvUPGRADE(sv, SVt_PV);
2995 SvGROW(sv, len + 1);
2996 Move(ptr,SvPVX(sv),len+1,char);
2998 (void)SvPOK_only(sv); /* validate pointer */
3003 =for apidoc sv_setpv_mg
3005 Like C<sv_setpv>, but also handles 'set' magic.
3011 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3018 =for apidoc sv_usepvn
3020 Tells an SV to use C<ptr> to find its string value. Normally the string is
3021 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3022 The C<ptr> should point to memory that was allocated by C<malloc>. The
3023 string length, C<len>, must be supplied. This function will realloc the
3024 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3025 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3026 See C<sv_usepvn_mg>.
3032 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3034 SV_CHECK_THINKFIRST(sv);
3035 (void)SvUPGRADE(sv, SVt_PV);
3040 (void)SvOOK_off(sv);
3041 if (SvPVX(sv) && SvLEN(sv))
3042 Safefree(SvPVX(sv));
3043 Renew(ptr, len+1, char);
3046 SvLEN_set(sv, len+1);
3048 (void)SvPOK_only(sv); /* validate pointer */
3053 =for apidoc sv_usepvn_mg
3055 Like C<sv_usepvn>, but also handles 'set' magic.
3061 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3063 sv_usepvn(sv,ptr,len);
3068 Perl_sv_force_normal(pTHX_ register SV *sv)
3070 if (SvREADONLY(sv)) {
3073 char *pvx = SvPVX(sv);
3074 STRLEN len = SvCUR(sv);
3075 U32 hash = SvUVX(sv);
3076 SvGROW(sv, len + 1);
3077 Move(pvx,SvPVX(sv),len,char);
3081 unsharepvn(pvx,len,hash);
3083 else if (PL_curcop != &PL_compiling)
3084 Perl_croak(aTHX_ PL_no_modify);
3088 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3095 Efficient removal of characters from the beginning of the string buffer.
3096 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3097 the string buffer. The C<ptr> becomes the first character of the adjusted
3104 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3108 register STRLEN delta;
3110 if (!ptr || !SvPOKp(sv))
3112 SV_CHECK_THINKFIRST(sv);
3113 if (SvTYPE(sv) < SVt_PVIV)
3114 sv_upgrade(sv,SVt_PVIV);
3117 if (!SvLEN(sv)) { /* make copy of shared string */
3118 char *pvx = SvPVX(sv);
3119 STRLEN len = SvCUR(sv);
3120 SvGROW(sv, len + 1);
3121 Move(pvx,SvPVX(sv),len,char);
3125 SvFLAGS(sv) |= SVf_OOK;
3127 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3128 delta = ptr - SvPVX(sv);
3136 =for apidoc sv_catpvn
3138 Concatenates the string onto the end of the string which is in the SV. The
3139 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3140 'set' magic. See C<sv_catpvn_mg>.
3146 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3151 junk = SvPV_force(sv, tlen);
3152 SvGROW(sv, tlen + len + 1);
3155 Move(ptr,SvPVX(sv)+tlen,len,char);
3158 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3163 =for apidoc sv_catpvn_mg
3165 Like C<sv_catpvn>, but also handles 'set' magic.
3171 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3173 sv_catpvn(sv,ptr,len);
3178 =for apidoc sv_catsv
3180 Concatenates the string from SV C<ssv> onto the end of the string in SV
3181 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3187 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3193 if ((s = SvPV(sstr, len))) {
3194 if (DO_UTF8(sstr)) {
3195 sv_utf8_upgrade(dstr);
3196 sv_catpvn(dstr,s,len);
3200 sv_catpvn(dstr,s,len);
3205 =for apidoc sv_catsv_mg
3207 Like C<sv_catsv>, but also handles 'set' magic.
3213 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3215 sv_catsv(dstr,sstr);
3220 =for apidoc sv_catpv
3222 Concatenates the string onto the end of the string which is in the SV.
3223 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3229 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3231 register STRLEN len;
3237 junk = SvPV_force(sv, tlen);
3239 SvGROW(sv, tlen + len + 1);
3242 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3244 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3249 =for apidoc sv_catpv_mg
3251 Like C<sv_catpv>, but also handles 'set' magic.
3257 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3264 Perl_newSV(pTHX_ STRLEN len)
3270 sv_upgrade(sv, SVt_PV);
3271 SvGROW(sv, len + 1);
3276 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3279 =for apidoc sv_magic
3281 Adds magic to an SV.
3287 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3291 if (SvREADONLY(sv)) {
3293 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3294 Perl_croak(aTHX_ PL_no_modify);
3296 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3297 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3304 (void)SvUPGRADE(sv, SVt_PVMG);
3306 Newz(702,mg, 1, MAGIC);
3307 mg->mg_moremagic = SvMAGIC(sv);
3310 if (!obj || obj == sv || how == '#' || how == 'r')
3314 mg->mg_obj = SvREFCNT_inc(obj);
3315 mg->mg_flags |= MGf_REFCOUNTED;
3318 mg->mg_len = namlen;
3321 mg->mg_ptr = savepvn(name, namlen);
3322 else if (namlen == HEf_SVKEY)
3323 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3327 mg->mg_virtual = &PL_vtbl_sv;
3330 mg->mg_virtual = &PL_vtbl_amagic;
3333 mg->mg_virtual = &PL_vtbl_amagicelem;
3339 mg->mg_virtual = &PL_vtbl_bm;
3342 mg->mg_virtual = &PL_vtbl_regdata;
3345 mg->mg_virtual = &PL_vtbl_regdatum;
3348 mg->mg_virtual = &PL_vtbl_env;
3351 mg->mg_virtual = &PL_vtbl_fm;
3354 mg->mg_virtual = &PL_vtbl_envelem;
3357 mg->mg_virtual = &PL_vtbl_mglob;
3360 mg->mg_virtual = &PL_vtbl_isa;
3363 mg->mg_virtual = &PL_vtbl_isaelem;
3366 mg->mg_virtual = &PL_vtbl_nkeys;
3373 mg->mg_virtual = &PL_vtbl_dbline;
3377 mg->mg_virtual = &PL_vtbl_mutex;
3379 #endif /* USE_THREADS */
3380 #ifdef USE_LOCALE_COLLATE
3382 mg->mg_virtual = &PL_vtbl_collxfrm;
3384 #endif /* USE_LOCALE_COLLATE */
3386 mg->mg_virtual = &PL_vtbl_pack;
3390 mg->mg_virtual = &PL_vtbl_packelem;
3393 mg->mg_virtual = &PL_vtbl_regexp;
3396 mg->mg_virtual = &PL_vtbl_sig;
3399 mg->mg_virtual = &PL_vtbl_sigelem;
3402 mg->mg_virtual = &PL_vtbl_taint;
3406 mg->mg_virtual = &PL_vtbl_uvar;
3409 mg->mg_virtual = &PL_vtbl_vec;
3412 mg->mg_virtual = &PL_vtbl_substr;
3415 mg->mg_virtual = &PL_vtbl_defelem;
3418 mg->mg_virtual = &PL_vtbl_glob;
3421 mg->mg_virtual = &PL_vtbl_arylen;
3424 mg->mg_virtual = &PL_vtbl_pos;
3427 mg->mg_virtual = &PL_vtbl_backref;
3429 case '~': /* Reserved for use by extensions not perl internals. */
3430 /* Useful for attaching extension internal data to perl vars. */
3431 /* Note that multiple extensions may clash if magical scalars */
3432 /* etc holding private data from one are passed to another. */
3436 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3440 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3444 =for apidoc sv_unmagic
3446 Removes magic from an SV.
3452 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3456 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3459 for (mg = *mgp; mg; mg = *mgp) {
3460 if (mg->mg_type == type) {
3461 MGVTBL* vtbl = mg->mg_virtual;
3462 *mgp = mg->mg_moremagic;
3463 if (vtbl && vtbl->svt_free)
3464 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3465 if (mg->mg_ptr && mg->mg_type != 'g')
3466 if (mg->mg_len >= 0)
3467 Safefree(mg->mg_ptr);
3468 else if (mg->mg_len == HEf_SVKEY)
3469 SvREFCNT_dec((SV*)mg->mg_ptr);
3470 if (mg->mg_flags & MGf_REFCOUNTED)
3471 SvREFCNT_dec(mg->mg_obj);
3475 mgp = &mg->mg_moremagic;
3479 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3486 =for apidoc sv_rvweaken
3494 Perl_sv_rvweaken(pTHX_ SV *sv)
3497 if (!SvOK(sv)) /* let undefs pass */
3500 Perl_croak(aTHX_ "Can't weaken a nonreference");
3501 else if (SvWEAKREF(sv)) {
3503 if (ckWARN(WARN_MISC))
3504 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3508 sv_add_backref(tsv, sv);
3515 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3519 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3520 av = (AV*)mg->mg_obj;
3523 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3524 SvREFCNT_dec(av); /* for sv_magic */
3530 S_sv_del_backref(pTHX_ SV *sv)
3537 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3538 Perl_croak(aTHX_ "panic: del_backref");
3539 av = (AV *)mg->mg_obj;
3544 svp[i] = &PL_sv_undef; /* XXX */
3551 =for apidoc sv_insert
3553 Inserts a string at the specified offset/length within the SV. Similar to
3554 the Perl substr() function.
3560 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3564 register char *midend;
3565 register char *bigend;
3571 Perl_croak(aTHX_ "Can't modify non-existent substring");
3572 SvPV_force(bigstr, curlen);
3573 (void)SvPOK_only_UTF8(bigstr);
3574 if (offset + len > curlen) {
3575 SvGROW(bigstr, offset+len+1);
3576 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3577 SvCUR_set(bigstr, offset+len);
3581 i = littlelen - len;
3582 if (i > 0) { /* string might grow */
3583 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3584 mid = big + offset + len;
3585 midend = bigend = big + SvCUR(bigstr);
3588 while (midend > mid) /* shove everything down */
3589 *--bigend = *--midend;
3590 Move(little,big+offset,littlelen,char);
3596 Move(little,SvPVX(bigstr)+offset,len,char);
3601 big = SvPVX(bigstr);
3604 bigend = big + SvCUR(bigstr);
3606 if (midend > bigend)
3607 Perl_croak(aTHX_ "panic: sv_insert");
3609 if (mid - big > bigend - midend) { /* faster to shorten from end */
3611 Move(little, mid, littlelen,char);
3614 i = bigend - midend;
3616 Move(midend, mid, i,char);
3620 SvCUR_set(bigstr, mid - big);
3623 else if ((i = mid - big)) { /* faster from front */
3624 midend -= littlelen;
3626 sv_chop(bigstr,midend-i);
3631 Move(little, mid, littlelen,char);
3633 else if (littlelen) {
3634 midend -= littlelen;
3635 sv_chop(bigstr,midend);
3636 Move(little,midend,littlelen,char);
3639 sv_chop(bigstr,midend);
3645 =for apidoc sv_replace
3647 Make the first argument a copy of the second, then delete the original.
3653 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3656 U32 refcnt = SvREFCNT(sv);
3657 SV_CHECK_THINKFIRST(sv);
3658 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3659 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3660 if (SvMAGICAL(sv)) {
3664 sv_upgrade(nsv, SVt_PVMG);
3665 SvMAGIC(nsv) = SvMAGIC(sv);
3666 SvFLAGS(nsv) |= SvMAGICAL(sv);
3672 assert(!SvREFCNT(sv));
3673 StructCopy(nsv,sv,SV);
3674 SvREFCNT(sv) = refcnt;
3675 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3680 =for apidoc sv_clear
3682 Clear an SV, making it empty. Does not free the memory used by the SV
3689 Perl_sv_clear(pTHX_ register SV *sv)
3693 assert(SvREFCNT(sv) == 0);
3697 if (PL_defstash) { /* Still have a symbol table? */
3702 Zero(&tmpref, 1, SV);
3703 sv_upgrade(&tmpref, SVt_RV);
3705 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3706 SvREFCNT(&tmpref) = 1;
3709 stash = SvSTASH(sv);
3710 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3713 PUSHSTACKi(PERLSI_DESTROY);
3714 SvRV(&tmpref) = SvREFCNT_inc(sv);
3719 call_sv((SV*)GvCV(destructor),
3720 G_DISCARD|G_EVAL|G_KEEPERR);
3726 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3728 del_XRV(SvANY(&tmpref));
3731 if (PL_in_clean_objs)
3732 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3734 /* DESTROY gave object new lease on life */
3740 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3741 SvOBJECT_off(sv); /* Curse the object. */
3742 if (SvTYPE(sv) != SVt_PVIO)
3743 --PL_sv_objcount; /* XXX Might want something more general */
3746 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3749 switch (SvTYPE(sv)) {
3752 IoIFP(sv) != PerlIO_stdin() &&
3753 IoIFP(sv) != PerlIO_stdout() &&
3754 IoIFP(sv) != PerlIO_stderr())
3756 io_close((IO*)sv, FALSE);
3758 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3759 PerlDir_close(IoDIRP(sv));
3760 IoDIRP(sv) = (DIR*)NULL;
3761 Safefree(IoTOP_NAME(sv));
3762 Safefree(IoFMT_NAME(sv));
3763 Safefree(IoBOTTOM_NAME(sv));
3778 SvREFCNT_dec(LvTARG(sv));
3782 Safefree(GvNAME(sv));
3783 /* cannot decrease stash refcount yet, as we might recursively delete
3784 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3785 of stash until current sv is completely gone.
3786 -- JohnPC, 27 Mar 1998 */
3787 stash = GvSTASH(sv);
3793 (void)SvOOK_off(sv);
3801 SvREFCNT_dec(SvRV(sv));
3803 else if (SvPVX(sv) && SvLEN(sv))
3804 Safefree(SvPVX(sv));
3805 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3806 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3818 switch (SvTYPE(sv)) {
3834 del_XPVIV(SvANY(sv));
3837 del_XPVNV(SvANY(sv));
3840 del_XPVMG(SvANY(sv));
3843 del_XPVLV(SvANY(sv));
3846 del_XPVAV(SvANY(sv));
3849 del_XPVHV(SvANY(sv));
3852 del_XPVCV(SvANY(sv));
3855 del_XPVGV(SvANY(sv));
3856 /* code duplication for increased performance. */
3857 SvFLAGS(sv) &= SVf_BREAK;
3858 SvFLAGS(sv) |= SVTYPEMASK;
3859 /* decrease refcount of the stash that owns this GV, if any */
3861 SvREFCNT_dec(stash);
3862 return; /* not break, SvFLAGS reset already happened */
3864 del_XPVBM(SvANY(sv));
3867 del_XPVFM(SvANY(sv));
3870 del_XPVIO(SvANY(sv));
3873 SvFLAGS(sv) &= SVf_BREAK;
3874 SvFLAGS(sv) |= SVTYPEMASK;
3878 Perl_sv_newref(pTHX_ SV *sv)
3881 ATOMIC_INC(SvREFCNT(sv));
3888 Free the memory used by an SV.
3894 Perl_sv_free(pTHX_ SV *sv)
3897 int refcount_is_zero;
3901 if (SvREFCNT(sv) == 0) {
3902 if (SvFLAGS(sv) & SVf_BREAK)
3904 if (PL_in_clean_all) /* All is fair */
3906 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3907 /* make sure SvREFCNT(sv)==0 happens very seldom */
3908 SvREFCNT(sv) = (~(U32)0)/2;
3911 if (ckWARN_d(WARN_INTERNAL))
3912 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3915 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3916 if (!refcount_is_zero)
3920 if (ckWARN_d(WARN_DEBUGGING))
3921 Perl_warner(aTHX_ WARN_DEBUGGING,
3922 "Attempt to free temp prematurely: SV 0x%"UVxf,
3927 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3928 /* make sure SvREFCNT(sv)==0 happens very seldom */
3929 SvREFCNT(sv) = (~(U32)0)/2;
3940 Returns the length of the string in the SV. See also C<SvCUR>.
3946 Perl_sv_len(pTHX_ register SV *sv)
3955 len = mg_length(sv);
3957 junk = SvPV(sv, len);
3962 =for apidoc sv_len_utf8
3964 Returns the number of characters in the string in an SV, counting wide
3965 UTF8 bytes as a single character.
3971 Perl_sv_len_utf8(pTHX_ register SV *sv)
3982 len = mg_length(sv);
3985 s = (U8*)SvPV(sv, len);
3996 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4001 I32 uoffset = *offsetp;
4007 start = s = (U8*)SvPV(sv, len);
4009 while (s < send && uoffset--)
4013 *offsetp = s - start;
4017 while (s < send && ulen--)
4027 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4036 s = (U8*)SvPV(sv, len);
4038 Perl_croak(aTHX_ "panic: bad byte offset");
4039 send = s + *offsetp;
4047 if (ckWARN_d(WARN_UTF8))
4048 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4058 Returns a boolean indicating whether the strings in the two SVs are
4065 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4072 bool pv1tmp = FALSE;
4073 bool pv2tmp = FALSE;
4080 pv1 = SvPV(sv1, cur1);
4087 pv2 = SvPV(sv2, cur2);
4089 /* do not utf8ize the comparands as a side-effect */
4090 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE && 0) {
4092 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4096 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4102 eq = memEQ(pv1, pv2, cur1);
4115 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4116 string in C<sv1> is less than, equal to, or greater than the string in
4123 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4128 bool pv1tmp = FALSE;
4129 bool pv2tmp = FALSE;
4136 pv1 = SvPV(sv1, cur1);
4143 pv2 = SvPV(sv2, cur2);
4145 /* do not utf8ize the comparands as a side-effect */
4146 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4148 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4152 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4158 cmp = cur2 ? -1 : 0;
4162 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4165 cmp = retval < 0 ? -1 : 1;
4166 } else if (cur1 == cur2) {
4169 cmp = cur1 < cur2 ? -1 : 1;
4182 =for apidoc sv_cmp_locale
4184 Compares the strings in two SVs in a locale-aware manner. See
4191 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4193 #ifdef USE_LOCALE_COLLATE
4199 if (PL_collation_standard)
4203 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4205 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4207 if (!pv1 || !len1) {
4218 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4221 return retval < 0 ? -1 : 1;
4224 * When the result of collation is equality, that doesn't mean
4225 * that there are no differences -- some locales exclude some
4226 * characters from consideration. So to avoid false equalities,
4227 * we use the raw string as a tiebreaker.
4233 #endif /* USE_LOCALE_COLLATE */
4235 return sv_cmp(sv1, sv2);
4238 #ifdef USE_LOCALE_COLLATE
4240 * Any scalar variable may carry an 'o' magic that contains the
4241 * scalar data of the variable transformed to such a format that
4242 * a normal memory comparison can be used to compare the data
4243 * according to the locale settings.
4246 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4250 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4251 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4256 Safefree(mg->mg_ptr);
4258 if ((xf = mem_collxfrm(s, len, &xlen))) {
4259 if (SvREADONLY(sv)) {
4262 return xf + sizeof(PL_collation_ix);
4265 sv_magic(sv, 0, 'o', 0, 0);
4266 mg = mg_find(sv, 'o');
4279 if (mg && mg->mg_ptr) {
4281 return mg->mg_ptr + sizeof(PL_collation_ix);
4289 #endif /* USE_LOCALE_COLLATE */
4294 Get a line from the filehandle and store it into the SV, optionally
4295 appending to the currently-stored string.
4301 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4306 register STDCHAR rslast;
4307 register STDCHAR *bp;
4311 SV_CHECK_THINKFIRST(sv);
4312 (void)SvUPGRADE(sv, SVt_PV);
4316 if (RsSNARF(PL_rs)) {
4320 else if (RsRECORD(PL_rs)) {
4321 I32 recsize, bytesread;
4324 /* Grab the size of the record we're getting */
4325 recsize = SvIV(SvRV(PL_rs));
4326 (void)SvPOK_only(sv); /* Validate pointer */
4327 buffer = SvGROW(sv, recsize + 1);
4330 /* VMS wants read instead of fread, because fread doesn't respect */
4331 /* RMS record boundaries. This is not necessarily a good thing to be */
4332 /* doing, but we've got no other real choice */
4333 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4335 bytesread = PerlIO_read(fp, buffer, recsize);
4337 SvCUR_set(sv, bytesread);
4338 buffer[bytesread] = '\0';
4339 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4341 else if (RsPARA(PL_rs)) {
4346 rsptr = SvPV(PL_rs, rslen);
4347 rslast = rslen ? rsptr[rslen - 1] : '\0';
4349 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4350 do { /* to make sure file boundaries work right */
4353 i = PerlIO_getc(fp);
4357 PerlIO_ungetc(fp,i);
4363 /* See if we know enough about I/O mechanism to cheat it ! */
4365 /* This used to be #ifdef test - it is made run-time test for ease
4366 of abstracting out stdio interface. One call should be cheap
4367 enough here - and may even be a macro allowing compile
4371 if (PerlIO_fast_gets(fp)) {
4374 * We're going to steal some values from the stdio struct
4375 * and put EVERYTHING in the innermost loop into registers.
4377 register STDCHAR *ptr;
4381 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4382 /* An ungetc()d char is handled separately from the regular
4383 * buffer, so we getc() it back out and stuff it in the buffer.
4385 i = PerlIO_getc(fp);
4386 if (i == EOF) return 0;
4387 *(--((*fp)->_ptr)) = (unsigned char) i;
4391 /* Here is some breathtakingly efficient cheating */
4393 cnt = PerlIO_get_cnt(fp); /* get count into register */
4394 (void)SvPOK_only(sv); /* validate pointer */
4395 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4396 if (cnt > 80 && SvLEN(sv) > append) {
4397 shortbuffered = cnt - SvLEN(sv) + append + 1;
4398 cnt -= shortbuffered;
4402 /* remember that cnt can be negative */
4403 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4408 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4409 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4410 DEBUG_P(PerlIO_printf(Perl_debug_log,
4411 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4412 DEBUG_P(PerlIO_printf(Perl_debug_log,
4413 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4414 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4415 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4420 while (cnt > 0) { /* this | eat */
4422 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4423 goto thats_all_folks; /* screams | sed :-) */
4427 Copy(ptr, bp, cnt, char); /* this | eat */
4428 bp += cnt; /* screams | dust */
4429 ptr += cnt; /* louder | sed :-) */
4434 if (shortbuffered) { /* oh well, must extend */
4435 cnt = shortbuffered;
4437 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4439 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4440 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4444 DEBUG_P(PerlIO_printf(Perl_debug_log,
4445 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4446 PTR2UV(ptr),(long)cnt));
4447 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4448 DEBUG_P(PerlIO_printf(Perl_debug_log,
4449 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4450 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4451 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4452 /* This used to call 'filbuf' in stdio form, but as that behaves like
4453 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4454 another abstraction. */
4455 i = PerlIO_getc(fp); /* get more characters */
4456 DEBUG_P(PerlIO_printf(Perl_debug_log,
4457 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4458 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4459 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4460 cnt = PerlIO_get_cnt(fp);
4461 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4462 DEBUG_P(PerlIO_printf(Perl_debug_log,
4463 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4465 if (i == EOF) /* all done for ever? */
4466 goto thats_really_all_folks;
4468 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4470 SvGROW(sv, bpx + cnt + 2);
4471 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4473 *bp++ = i; /* store character from PerlIO_getc */
4475 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4476 goto thats_all_folks;
4480 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4481 memNE((char*)bp - rslen, rsptr, rslen))
4482 goto screamer; /* go back to the fray */
4483 thats_really_all_folks:
4485 cnt += shortbuffered;
4486 DEBUG_P(PerlIO_printf(Perl_debug_log,
4487 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4488 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4489 DEBUG_P(PerlIO_printf(Perl_debug_log,
4490 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4491 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4492 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4494 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4495 DEBUG_P(PerlIO_printf(Perl_debug_log,
4496 "Screamer: done, len=%ld, string=|%.*s|\n",
4497 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4502 /*The big, slow, and stupid way */
4505 /* Need to work around EPOC SDK features */
4506 /* On WINS: MS VC5 generates calls to _chkstk, */
4507 /* if a `large' stack frame is allocated */
4508 /* gcc on MARM does not generate calls like these */
4514 register STDCHAR *bpe = buf + sizeof(buf);
4516 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4517 ; /* keep reading */
4521 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4522 /* Accomodate broken VAXC compiler, which applies U8 cast to
4523 * both args of ?: operator, causing EOF to change into 255
4525 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4529 sv_catpvn(sv, (char *) buf, cnt);
4531 sv_setpvn(sv, (char *) buf, cnt);
4533 if (i != EOF && /* joy */
4535 SvCUR(sv) < rslen ||
4536 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4540 * If we're reading from a TTY and we get a short read,
4541 * indicating that the user hit his EOF character, we need
4542 * to notice it now, because if we try to read from the TTY
4543 * again, the EOF condition will disappear.
4545 * The comparison of cnt to sizeof(buf) is an optimization
4546 * that prevents unnecessary calls to feof().
4550 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4555 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4556 while (i != EOF) { /* to make sure file boundaries work right */
4557 i = PerlIO_getc(fp);
4559 PerlIO_ungetc(fp,i);
4565 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4572 Auto-increment of the value in the SV.
4578 Perl_sv_inc(pTHX_ register SV *sv)
4587 if (SvTHINKFIRST(sv)) {
4588 if (SvREADONLY(sv)) {
4590 if (PL_curcop != &PL_compiling)
4591 Perl_croak(aTHX_ PL_no_modify);
4595 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4597 i = PTR2IV(SvRV(sv));
4602 flags = SvFLAGS(sv);
4603 if (flags & SVp_NOK) {
4604 (void)SvNOK_only(sv);
4608 if (flags & SVp_IOK) {
4610 if (SvUVX(sv) == UV_MAX)
4611 sv_setnv(sv, (NV)UV_MAX + 1.0);
4613 (void)SvIOK_only_UV(sv);
4616 if (SvIVX(sv) == IV_MAX)
4617 sv_setnv(sv, (NV)IV_MAX + 1.0);
4619 (void)SvIOK_only(sv);
4625 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4626 if ((flags & SVTYPEMASK) < SVt_PVNV)
4627 sv_upgrade(sv, SVt_NV);
4629 (void)SvNOK_only(sv);
4633 while (isALPHA(*d)) d++;
4634 while (isDIGIT(*d)) d++;
4636 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4640 while (d >= SvPVX(sv)) {
4648 /* MKS: The original code here died if letters weren't consecutive.
4649 * at least it didn't have to worry about non-C locales. The
4650 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4651 * arranged in order (although not consecutively) and that only
4652 * [A-Za-z] are accepted by isALPHA in the C locale.
4654 if (*d != 'z' && *d != 'Z') {
4655 do { ++*d; } while (!isALPHA(*d));
4658 *(d--) -= 'z' - 'a';
4663 *(d--) -= 'z' - 'a' + 1;
4667 /* oh,oh, the number grew */
4668 SvGROW(sv, SvCUR(sv) + 2);
4670 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4681 Auto-decrement of the value in the SV.
4687 Perl_sv_dec(pTHX_ register SV *sv)
4695 if (SvTHINKFIRST(sv)) {
4696 if (SvREADONLY(sv)) {
4698 if (PL_curcop != &PL_compiling)
4699 Perl_croak(aTHX_ PL_no_modify);
4703 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4705 i = PTR2IV(SvRV(sv));
4710 flags = SvFLAGS(sv);
4711 if (flags & SVp_NOK) {
4713 (void)SvNOK_only(sv);
4716 if (flags & SVp_IOK) {
4718 if (SvUVX(sv) == 0) {
4719 (void)SvIOK_only(sv);
4723 (void)SvIOK_only_UV(sv);
4727 if (SvIVX(sv) == IV_MIN)
4728 sv_setnv(sv, (NV)IV_MIN - 1.0);
4730 (void)SvIOK_only(sv);
4736 if (!(flags & SVp_POK)) {
4737 if ((flags & SVTYPEMASK) < SVt_PVNV)
4738 sv_upgrade(sv, SVt_NV);
4740 (void)SvNOK_only(sv);
4743 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4747 =for apidoc sv_mortalcopy
4749 Creates a new SV which is a copy of the original SV. The new SV is marked
4755 /* Make a string that will exist for the duration of the expression
4756 * evaluation. Actually, it may have to last longer than that, but
4757 * hopefully we won't free it until it has been assigned to a
4758 * permanent location. */
4761 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4767 sv_setsv(sv,oldstr);
4769 PL_tmps_stack[++PL_tmps_ix] = sv;
4775 =for apidoc sv_newmortal
4777 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4783 Perl_sv_newmortal(pTHX)
4789 SvFLAGS(sv) = SVs_TEMP;
4791 PL_tmps_stack[++PL_tmps_ix] = sv;
4796 =for apidoc sv_2mortal
4798 Marks an SV as mortal. The SV will be destroyed when the current context
4804 /* same thing without the copying */
4807 Perl_sv_2mortal(pTHX_ register SV *sv)
4812 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4815 PL_tmps_stack[++PL_tmps_ix] = sv;
4823 Creates a new SV and copies a string into it. The reference count for the
4824 SV is set to 1. If C<len> is zero, Perl will compute the length using
4825 strlen(). For efficiency, consider using C<newSVpvn> instead.
4831 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4838 sv_setpvn(sv,s,len);
4843 =for apidoc newSVpvn
4845 Creates a new SV and copies a string into it. The reference count for the
4846 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4847 string. You are responsible for ensuring that the source string is at least
4854 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4859 sv_setpvn(sv,s,len);
4864 =for apidoc newSVpvn_share
4866 Creates a new SV and populates it with a string from
4867 the string table. Turns on READONLY and FAKE.
4868 The idea here is that as string table is used for shared hash
4869 keys these strings will have SvPVX == HeKEY and hash lookup
4870 will avoid string compare.
4876 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4880 PERL_HASH(hash, src, len);
4882 sv_upgrade(sv, SVt_PVIV);
4883 SvPVX(sv) = sharepvn(src, len, hash);
4893 #if defined(PERL_IMPLICIT_CONTEXT)
4895 Perl_newSVpvf_nocontext(const char* pat, ...)
4900 va_start(args, pat);
4901 sv = vnewSVpvf(pat, &args);
4908 =for apidoc newSVpvf
4910 Creates a new SV an initialize it with the string formatted like
4917 Perl_newSVpvf(pTHX_ const char* pat, ...)
4921 va_start(args, pat);
4922 sv = vnewSVpvf(pat, &args);
4928 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4932 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4939 Creates a new SV and copies a floating point value into it.
4940 The reference count for the SV is set to 1.
4946 Perl_newSVnv(pTHX_ NV n)
4958 Creates a new SV and copies an integer into it. The reference count for the
4965 Perl_newSViv(pTHX_ IV i)
4977 Creates a new SV and copies an unsigned integer into it.
4978 The reference count for the SV is set to 1.
4984 Perl_newSVuv(pTHX_ UV u)
4994 =for apidoc newRV_noinc
4996 Creates an RV wrapper for an SV. The reference count for the original
4997 SV is B<not> incremented.
5003 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5009 sv_upgrade(sv, SVt_RV);
5016 /* newRV_inc is #defined to newRV in sv.h */
5018 Perl_newRV(pTHX_ SV *tmpRef)
5020 return newRV_noinc(SvREFCNT_inc(tmpRef));
5026 Creates a new SV which is an exact duplicate of the original SV.
5031 /* make an exact duplicate of old */
5034 Perl_newSVsv(pTHX_ register SV *old)
5041 if (SvTYPE(old) == SVTYPEMASK) {
5042 if (ckWARN_d(WARN_INTERNAL))
5043 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5058 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5066 char todo[PERL_UCHAR_MAX+1];
5071 if (!*s) { /* reset ?? searches */
5072 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5073 pm->op_pmdynflags &= ~PMdf_USED;
5078 /* reset variables */
5080 if (!HvARRAY(stash))
5083 Zero(todo, 256, char);
5085 i = (unsigned char)*s;
5089 max = (unsigned char)*s++;
5090 for ( ; i <= max; i++) {
5093 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5094 for (entry = HvARRAY(stash)[i];
5096 entry = HeNEXT(entry))
5098 if (!todo[(U8)*HeKEY(entry)])
5100 gv = (GV*)HeVAL(entry);
5102 if (SvTHINKFIRST(sv)) {
5103 if (!SvREADONLY(sv) && SvROK(sv))
5108 if (SvTYPE(sv) >= SVt_PV) {
5110 if (SvPVX(sv) != Nullch)
5117 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5119 #ifndef VMS /* VMS has no environ array */
5121 environ[0] = Nullch;
5130 Perl_sv_2io(pTHX_ SV *sv)
5136 switch (SvTYPE(sv)) {
5144 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5148 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5150 return sv_2io(SvRV(sv));
5151 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5157 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5164 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5171 return *gvp = Nullgv, Nullcv;
5172 switch (SvTYPE(sv)) {
5192 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5193 tryAMAGICunDEREF(to_cv);
5196 if (SvTYPE(sv) == SVt_PVCV) {
5205 Perl_croak(aTHX_ "Not a subroutine reference");
5210 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5216 if (lref && !GvCVu(gv)) {
5219 tmpsv = NEWSV(704,0);
5220 gv_efullname3(tmpsv, gv, Nullch);
5221 /* XXX this is probably not what they think they're getting.
5222 * It has the same effect as "sub name;", i.e. just a forward
5224 newSUB(start_subparse(FALSE, 0),
5225 newSVOP(OP_CONST, 0, tmpsv),
5230 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5239 Returns true if the SV has a true value by Perl's rules.
5245 Perl_sv_true(pTHX_ register SV *sv)
5252 if ((tXpv = (XPV*)SvANY(sv)) &&
5253 (tXpv->xpv_cur > 1 ||
5254 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5261 return SvIVX(sv) != 0;
5264 return SvNVX(sv) != 0.0;
5266 return sv_2bool(sv);
5272 Perl_sv_iv(pTHX_ register SV *sv)
5276 return (IV)SvUVX(sv);
5283 Perl_sv_uv(pTHX_ register SV *sv)
5288 return (UV)SvIVX(sv);
5294 Perl_sv_nv(pTHX_ register SV *sv)
5302 Perl_sv_pv(pTHX_ SV *sv)
5309 return sv_2pv(sv, &n_a);
5313 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5319 return sv_2pv(sv, lp);
5323 =for apidoc sv_pvn_force
5325 Get a sensible string out of the SV somehow.
5331 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5335 if (SvTHINKFIRST(sv) && !SvROK(sv))
5336 sv_force_normal(sv);
5342 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5344 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5345 PL_op_name[PL_op->op_type]);
5349 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5354 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5355 SvGROW(sv, len + 1);
5356 Move(s,SvPVX(sv),len,char);
5361 SvPOK_on(sv); /* validate pointer */
5363 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5364 PTR2UV(sv),SvPVX(sv)));
5371 Perl_sv_pvbyte(pTHX_ SV *sv)
5377 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5379 return sv_pvn(sv,lp);
5383 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5385 return sv_pvn_force(sv,lp);
5389 Perl_sv_pvutf8(pTHX_ SV *sv)
5391 sv_utf8_upgrade(sv);
5396 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5398 sv_utf8_upgrade(sv);
5399 return sv_pvn(sv,lp);
5403 =for apidoc sv_pvutf8n_force
5405 Get a sensible UTF8-encoded string out of the SV somehow. See
5412 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5414 sv_utf8_upgrade(sv);
5415 return sv_pvn_force(sv,lp);
5419 =for apidoc sv_reftype
5421 Returns a string describing what the SV is a reference to.
5427 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5429 if (ob && SvOBJECT(sv))
5430 return HvNAME(SvSTASH(sv));
5432 switch (SvTYPE(sv)) {
5446 case SVt_PVLV: return "LVALUE";
5447 case SVt_PVAV: return "ARRAY";
5448 case SVt_PVHV: return "HASH";
5449 case SVt_PVCV: return "CODE";
5450 case SVt_PVGV: return "GLOB";
5451 case SVt_PVFM: return "FORMAT";
5452 case SVt_PVIO: return "IO";
5453 default: return "UNKNOWN";
5459 =for apidoc sv_isobject
5461 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5462 object. If the SV is not an RV, or if the object is not blessed, then this
5469 Perl_sv_isobject(pTHX_ SV *sv)
5486 Returns a boolean indicating whether the SV is blessed into the specified
5487 class. This does not check for subtypes; use C<sv_derived_from> to verify
5488 an inheritance relationship.
5494 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5506 return strEQ(HvNAME(SvSTASH(sv)), name);
5512 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5513 it will be upgraded to one. If C<classname> is non-null then the new SV will
5514 be blessed in the specified package. The new SV is returned and its
5515 reference count is 1.
5521 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5528 SV_CHECK_THINKFIRST(rv);
5531 if (SvTYPE(rv) >= SVt_PVMG) {
5532 U32 refcnt = SvREFCNT(rv);
5536 SvREFCNT(rv) = refcnt;
5539 if (SvTYPE(rv) < SVt_RV)
5540 sv_upgrade(rv, SVt_RV);
5541 else if (SvTYPE(rv) > SVt_RV) {
5542 (void)SvOOK_off(rv);
5543 if (SvPVX(rv) && SvLEN(rv))
5544 Safefree(SvPVX(rv));
5554 HV* stash = gv_stashpv(classname, TRUE);
5555 (void)sv_bless(rv, stash);
5561 =for apidoc sv_setref_pv
5563 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5564 argument will be upgraded to an RV. That RV will be modified to point to
5565 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5566 into the SV. The C<classname> argument indicates the package for the
5567 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5568 will be returned and will have a reference count of 1.
5570 Do not use with other Perl types such as HV, AV, SV, CV, because those
5571 objects will become corrupted by the pointer copy process.
5573 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5579 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5582 sv_setsv(rv, &PL_sv_undef);
5586 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5591 =for apidoc sv_setref_iv
5593 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5594 argument will be upgraded to an RV. That RV will be modified to point to
5595 the new SV. The C<classname> argument indicates the package for the
5596 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5597 will be returned and will have a reference count of 1.
5603 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5605 sv_setiv(newSVrv(rv,classname), iv);
5610 =for apidoc sv_setref_nv
5612 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5613 argument will be upgraded to an RV. That RV will be modified to point to
5614 the new SV. The C<classname> argument indicates the package for the
5615 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5616 will be returned and will have a reference count of 1.
5622 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5624 sv_setnv(newSVrv(rv,classname), nv);
5629 =for apidoc sv_setref_pvn
5631 Copies a string into a new SV, optionally blessing the SV. The length of the
5632 string must be specified with C<n>. The C<rv> argument will be upgraded to
5633 an RV. That RV will be modified to point to the new SV. The C<classname>
5634 argument indicates the package for the blessing. Set C<classname> to
5635 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5636 a reference count of 1.
5638 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5644 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5646 sv_setpvn(newSVrv(rv,classname), pv, n);
5651 =for apidoc sv_bless
5653 Blesses an SV into a specified package. The SV must be an RV. The package
5654 must be designated by its stash (see C<gv_stashpv()>). The reference count
5655 of the SV is unaffected.
5661 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5666 Perl_croak(aTHX_ "Can't bless non-reference value");
5668 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5669 if (SvREADONLY(tmpRef))
5670 Perl_croak(aTHX_ PL_no_modify);
5671 if (SvOBJECT(tmpRef)) {
5672 if (SvTYPE(tmpRef) != SVt_PVIO)
5674 SvREFCNT_dec(SvSTASH(tmpRef));
5677 SvOBJECT_on(tmpRef);
5678 if (SvTYPE(tmpRef) != SVt_PVIO)
5680 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5681 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5692 S_sv_unglob(pTHX_ SV *sv)
5696 assert(SvTYPE(sv) == SVt_PVGV);
5701 SvREFCNT_dec(GvSTASH(sv));
5702 GvSTASH(sv) = Nullhv;
5704 sv_unmagic(sv, '*');
5705 Safefree(GvNAME(sv));
5708 /* need to keep SvANY(sv) in the right arena */
5709 xpvmg = new_XPVMG();
5710 StructCopy(SvANY(sv), xpvmg, XPVMG);
5711 del_XPVGV(SvANY(sv));
5714 SvFLAGS(sv) &= ~SVTYPEMASK;
5715 SvFLAGS(sv) |= SVt_PVMG;
5719 =for apidoc sv_unref
5721 Unsets the RV status of the SV, and decrements the reference count of
5722 whatever was being referenced by the RV. This can almost be thought of
5723 as a reversal of C<newSVrv>. See C<SvROK_off>.
5729 Perl_sv_unref(pTHX_ SV *sv)
5733 if (SvWEAKREF(sv)) {
5741 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5744 sv_2mortal(rv); /* Schedule for freeing later */
5748 Perl_sv_taint(pTHX_ SV *sv)
5750 sv_magic((sv), Nullsv, 't', Nullch, 0);
5754 Perl_sv_untaint(pTHX_ SV *sv)
5756 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5757 MAGIC *mg = mg_find(sv, 't');
5764 Perl_sv_tainted(pTHX_ SV *sv)
5766 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5767 MAGIC *mg = mg_find(sv, 't');
5768 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5775 =for apidoc sv_setpviv
5777 Copies an integer into the given SV, also updating its string value.
5778 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5784 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5786 char buf[TYPE_CHARS(UV)];
5788 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5790 sv_setpvn(sv, ptr, ebuf - ptr);
5795 =for apidoc sv_setpviv_mg
5797 Like C<sv_setpviv>, but also handles 'set' magic.
5803 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5805 char buf[TYPE_CHARS(UV)];
5807 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5809 sv_setpvn(sv, ptr, ebuf - ptr);
5813 #if defined(PERL_IMPLICIT_CONTEXT)
5815 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5819 va_start(args, pat);
5820 sv_vsetpvf(sv, pat, &args);
5826 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5830 va_start(args, pat);
5831 sv_vsetpvf_mg(sv, pat, &args);
5837 =for apidoc sv_setpvf
5839 Processes its arguments like C<sprintf> and sets an SV to the formatted
5840 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5846 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5849 va_start(args, pat);
5850 sv_vsetpvf(sv, pat, &args);
5855 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5857 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5861 =for apidoc sv_setpvf_mg
5863 Like C<sv_setpvf>, but also handles 'set' magic.
5869 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5872 va_start(args, pat);
5873 sv_vsetpvf_mg(sv, pat, &args);
5878 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5880 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5884 #if defined(PERL_IMPLICIT_CONTEXT)
5886 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5890 va_start(args, pat);
5891 sv_vcatpvf(sv, pat, &args);
5896 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5900 va_start(args, pat);
5901 sv_vcatpvf_mg(sv, pat, &args);
5907 =for apidoc sv_catpvf
5909 Processes its arguments like C<sprintf> and appends the formatted output
5910 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5911 typically be called after calling this function to handle 'set' magic.
5917 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5920 va_start(args, pat);
5921 sv_vcatpvf(sv, pat, &args);
5926 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5928 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5932 =for apidoc sv_catpvf_mg
5934 Like C<sv_catpvf>, but also handles 'set' magic.
5940 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5943 va_start(args, pat);
5944 sv_vcatpvf_mg(sv, pat, &args);
5949 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5951 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5956 =for apidoc sv_vsetpvfn
5958 Works like C<vcatpvfn> but copies the text into the SV instead of
5965 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5967 sv_setpvn(sv, "", 0);
5968 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5972 =for apidoc sv_vcatpvfn
5974 Processes its arguments like C<vsprintf> and appends the formatted output
5975 to an SV. Uses an array of SVs if the C style variable argument list is
5976 missing (NULL). When running with taint checks enabled, indicates via
5977 C<maybe_tainted> if results are untrustworthy (often due to the use of
5984 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5992 static char nullstr[] = "(null)";
5995 /* no matter what, this is a string now */
5996 (void)SvPV_force(sv, origlen);
5998 /* special-case "", "%s", and "%_" */
6001 if (patlen == 2 && pat[0] == '%') {
6005 char *s = va_arg(*args, char*);
6006 sv_catpv(sv, s ? s : nullstr);
6008 else if (svix < svmax) {
6009 sv_catsv(sv, *svargs);
6010 if (DO_UTF8(*svargs))
6016 argsv = va_arg(*args, SV*);
6017 sv_catsv(sv, argsv);
6022 /* See comment on '_' below */
6027 patend = (char*)pat + patlen;
6028 for (p = (char*)pat; p < patend; p = q) {
6031 bool vectorize = FALSE;
6038 bool has_precis = FALSE;
6040 bool is_utf = FALSE;
6043 U8 utf8buf[UTF8_MAXLEN];
6044 STRLEN esignlen = 0;
6046 char *eptr = Nullch;
6048 /* Times 4: a decimal digit takes more than 3 binary digits.
6049 * NV_DIG: mantissa takes than many decimal digits.
6050 * Plus 32: Playing safe. */
6051 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6052 /* large enough for "%#.#f" --chip */
6053 /* what about long double NVs? --jhi */
6056 U8 *vecstr = Null(U8*);
6068 STRLEN dotstrlen = 1;
6070 for (q = p; q < patend && *q != '%'; ++q) ;
6072 sv_catpvn(sv, p, q - p);
6101 case '*': /* printf("%*vX",":",$ipv6addr) */
6106 vecsv = va_arg(*args, SV*);
6107 else if (svix < svmax)
6108 vecsv = svargs[svix++];
6111 dotstr = SvPVx(vecsv,dotstrlen);
6130 case '1': case '2': case '3':
6131 case '4': case '5': case '6':
6132 case '7': case '8': case '9':
6135 width = width * 10 + (*q++ - '0');
6140 i = va_arg(*args, int);
6142 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6144 width = (i < 0) ? -i : i;
6155 i = va_arg(*args, int);
6157 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6158 precis = (i < 0) ? 0 : i;
6164 precis = precis * 10 + (*q++ - '0');
6171 vecsv = va_arg(*args, SV*);
6172 vecstr = (U8*)SvPVx(vecsv,veclen);
6173 utf = DO_UTF8(vecsv);
6175 else if (svix < svmax) {
6176 vecsv = svargs[svix++];
6177 vecstr = (U8*)SvPVx(vecsv,veclen);
6178 utf = DO_UTF8(vecsv);
6189 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6200 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6201 if (*(q + 1) == 'l') { /* lld, llf */
6228 uv = va_arg(*args, int);
6230 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6231 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6232 eptr = (char*)utf8buf;
6233 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6245 eptr = va_arg(*args, char*);
6247 #ifdef MACOS_TRADITIONAL
6248 /* On MacOS, %#s format is used for Pascal strings */
6253 elen = strlen(eptr);
6256 elen = sizeof nullstr - 1;
6259 else if (svix < svmax) {
6260 argsv = svargs[svix++];
6261 eptr = SvPVx(argsv, elen);
6262 if (DO_UTF8(argsv)) {
6263 if (has_precis && precis < elen) {
6265 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6268 if (width) { /* fudge width (can't fudge elen) */
6269 width += elen - sv_len_utf8(argsv);
6278 * The "%_" hack might have to be changed someday,
6279 * if ISO or ANSI decide to use '_' for something.
6280 * So we keep it hidden from users' code.
6284 argsv = va_arg(*args,SV*);
6285 eptr = SvPVx(argsv, elen);
6291 if (has_precis && elen > precis)
6301 uv = PTR2UV(va_arg(*args, void*));
6303 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
6323 iv = (IV)utf8_to_uv(vecstr, &ulen, 0);
6333 case 'h': iv = (short)va_arg(*args, int); break;
6334 default: iv = va_arg(*args, int); break;
6335 case 'l': iv = va_arg(*args, long); break;
6336 case 'V': iv = va_arg(*args, IV); break;
6338 case 'q': iv = va_arg(*args, Quad_t); break;
6343 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6345 case 'h': iv = (short)iv; break;
6347 case 'l': iv = (long)iv; break;
6350 case 'q': iv = (Quad_t)iv; break;
6357 esignbuf[esignlen++] = plus;
6361 esignbuf[esignlen++] = '-';
6405 uv = utf8_to_uv(vecstr, &ulen, 0);
6415 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6416 default: uv = va_arg(*args, unsigned); break;
6417 case 'l': uv = va_arg(*args, unsigned long); break;
6418 case 'V': uv = va_arg(*args, UV); break;
6420 case 'q': uv = va_arg(*args, Quad_t); break;
6425 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6427 case 'h': uv = (unsigned short)uv; break;
6429 case 'l': uv = (unsigned long)uv; break;
6432 case 'q': uv = (Quad_t)uv; break;
6438 eptr = ebuf + sizeof ebuf;
6444 p = (char*)((c == 'X')
6445 ? "0123456789ABCDEF" : "0123456789abcdef");
6451 esignbuf[esignlen++] = '0';
6452 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6458 *--eptr = '0' + dig;
6460 if (alt && *eptr != '0')
6466 *--eptr = '0' + dig;
6469 esignbuf[esignlen++] = '0';
6470 esignbuf[esignlen++] = 'b';
6473 default: /* it had better be ten or less */
6474 #if defined(PERL_Y2KWARN)
6475 if (ckWARN(WARN_Y2K)) {
6477 char *s = SvPV(sv,n);
6478 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6479 && (n == 2 || !isDIGIT(s[n-3])))
6481 Perl_warner(aTHX_ WARN_Y2K,
6482 "Possible Y2K bug: %%%c %s",
6483 c, "format string following '19'");
6489 *--eptr = '0' + dig;
6490 } while (uv /= base);
6493 elen = (ebuf + sizeof ebuf) - eptr;
6496 zeros = precis - elen;
6497 else if (precis == 0 && elen == 1 && *eptr == '0')
6502 /* FLOATING POINT */
6505 c = 'f'; /* maybe %F isn't supported here */
6511 /* This is evil, but floating point is even more evil */
6515 nv = va_arg(*args, NV);
6517 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6520 if (c != 'e' && c != 'E') {
6522 (void)Perl_frexp(nv, &i);
6523 if (i == PERL_INT_MIN)
6524 Perl_die(aTHX_ "panic: frexp");
6526 need = BIT_DIGITS(i);
6528 need += has_precis ? precis : 6; /* known default */
6532 need += 20; /* fudge factor */
6533 if (PL_efloatsize < need) {
6534 Safefree(PL_efloatbuf);
6535 PL_efloatsize = need + 20; /* more fudge */
6536 New(906, PL_efloatbuf, PL_efloatsize, char);
6537 PL_efloatbuf[0] = '\0';
6540 eptr = ebuf + sizeof ebuf;
6543 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6545 /* Copy the one or more characters in a long double
6546 * format before the 'base' ([efgEFG]) character to
6547 * the format string. */
6548 static char const prifldbl[] = PERL_PRIfldbl;
6549 char const *p = prifldbl + sizeof(prifldbl) - 3;
6550 while (p >= prifldbl) { *--eptr = *p--; }
6555 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6560 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6573 STORE_NUMERIC_STANDARD_SET_LOCAL();
6574 #ifdef USE_LOCALE_NUMERIC
6575 if (!was_standard && maybe_tainted)
6576 *maybe_tainted = TRUE;
6578 (void)sprintf(PL_efloatbuf, eptr, nv);
6579 RESTORE_NUMERIC_STANDARD();
6582 eptr = PL_efloatbuf;
6583 elen = strlen(PL_efloatbuf);
6590 i = SvCUR(sv) - origlen;
6593 case 'h': *(va_arg(*args, short*)) = i; break;
6594 default: *(va_arg(*args, int*)) = i; break;
6595 case 'l': *(va_arg(*args, long*)) = i; break;
6596 case 'V': *(va_arg(*args, IV*)) = i; break;
6598 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6602 else if (svix < svmax)
6603 sv_setuv_mg(svargs[svix++], (UV)i);
6604 continue; /* not "break" */
6611 if (!args && ckWARN(WARN_PRINTF) &&
6612 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6613 SV *msg = sv_newmortal();
6614 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6615 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6618 Perl_sv_catpvf(aTHX_ msg,
6619 "\"%%%c\"", c & 0xFF);
6621 Perl_sv_catpvf(aTHX_ msg,
6622 "\"%%\\%03"UVof"\"",
6625 sv_catpv(msg, "end of string");
6626 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6629 /* output mangled stuff ... */
6635 /* ... right here, because formatting flags should not apply */
6636 SvGROW(sv, SvCUR(sv) + elen + 1);
6638 memcpy(p, eptr, elen);
6641 SvCUR(sv) = p - SvPVX(sv);
6642 continue; /* not "break" */
6645 have = esignlen + zeros + elen;
6646 need = (have > width ? have : width);
6649 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6651 if (esignlen && fill == '0') {
6652 for (i = 0; i < esignlen; i++)
6656 memset(p, fill, gap);
6659 if (esignlen && fill != '0') {
6660 for (i = 0; i < esignlen; i++)
6664 for (i = zeros; i; i--)
6668 memcpy(p, eptr, elen);
6672 memset(p, ' ', gap);
6677 memcpy(p, dotstr, dotstrlen);
6681 vectorize = FALSE; /* done iterating over vecstr */
6686 SvCUR(sv) = p - SvPVX(sv);
6694 #if defined(USE_ITHREADS)
6696 #if defined(USE_THREADS)
6697 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6700 #ifndef GpREFCNT_inc
6701 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6705 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6706 #define av_dup(s) (AV*)sv_dup((SV*)s)
6707 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6708 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6709 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6710 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6711 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6712 #define io_dup(s) (IO*)sv_dup((SV*)s)
6713 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6714 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6715 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6716 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6717 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6720 Perl_re_dup(pTHX_ REGEXP *r)
6722 /* XXX fix when pmop->op_pmregexp becomes shared */
6723 return ReREFCNT_inc(r);
6727 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6731 return (PerlIO*)NULL;
6733 /* look for it in the table first */
6734 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6738 /* create anew and remember what it is */
6739 ret = PerlIO_fdupopen(fp);
6740 ptr_table_store(PL_ptr_table, fp, ret);
6745 Perl_dirp_dup(pTHX_ DIR *dp)
6754 Perl_gp_dup(pTHX_ GP *gp)
6759 /* look for it in the table first */
6760 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6764 /* create anew and remember what it is */
6765 Newz(0, ret, 1, GP);
6766 ptr_table_store(PL_ptr_table, gp, ret);
6769 ret->gp_refcnt = 0; /* must be before any other dups! */
6770 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6771 ret->gp_io = io_dup_inc(gp->gp_io);
6772 ret->gp_form = cv_dup_inc(gp->gp_form);
6773 ret->gp_av = av_dup_inc(gp->gp_av);
6774 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6775 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6776 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6777 ret->gp_cvgen = gp->gp_cvgen;
6778 ret->gp_flags = gp->gp_flags;
6779 ret->gp_line = gp->gp_line;
6780 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6785 Perl_mg_dup(pTHX_ MAGIC *mg)
6787 MAGIC *mgret = (MAGIC*)NULL;
6790 return (MAGIC*)NULL;
6791 /* look for it in the table first */
6792 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6796 for (; mg; mg = mg->mg_moremagic) {
6798 Newz(0, nmg, 1, MAGIC);
6802 mgprev->mg_moremagic = nmg;
6803 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6804 nmg->mg_private = mg->mg_private;
6805 nmg->mg_type = mg->mg_type;
6806 nmg->mg_flags = mg->mg_flags;
6807 if (mg->mg_type == 'r') {
6808 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6811 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6812 ? sv_dup_inc(mg->mg_obj)
6813 : sv_dup(mg->mg_obj);
6815 nmg->mg_len = mg->mg_len;
6816 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6817 if (mg->mg_ptr && mg->mg_type != 'g') {
6818 if (mg->mg_len >= 0) {
6819 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6820 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6821 AMT *amtp = (AMT*)mg->mg_ptr;
6822 AMT *namtp = (AMT*)nmg->mg_ptr;
6824 for (i = 1; i < NofAMmeth; i++) {
6825 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6829 else if (mg->mg_len == HEf_SVKEY)
6830 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6838 Perl_ptr_table_new(pTHX)
6841 Newz(0, tbl, 1, PTR_TBL_t);
6844 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6849 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6851 PTR_TBL_ENT_t *tblent;
6852 UV hash = PTR2UV(sv);
6854 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6855 for (; tblent; tblent = tblent->next) {
6856 if (tblent->oldval == sv)
6857 return tblent->newval;
6863 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6865 PTR_TBL_ENT_t *tblent, **otblent;
6866 /* XXX this may be pessimal on platforms where pointers aren't good
6867 * hash values e.g. if they grow faster in the most significant
6869 UV hash = PTR2UV(oldv);
6873 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6874 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6875 if (tblent->oldval == oldv) {
6876 tblent->newval = newv;
6881 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6882 tblent->oldval = oldv;
6883 tblent->newval = newv;
6884 tblent->next = *otblent;
6887 if (i && tbl->tbl_items > tbl->tbl_max)
6888 ptr_table_split(tbl);
6892 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6894 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6895 UV oldsize = tbl->tbl_max + 1;
6896 UV newsize = oldsize * 2;
6899 Renew(ary, newsize, PTR_TBL_ENT_t*);
6900 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6901 tbl->tbl_max = --newsize;
6903 for (i=0; i < oldsize; i++, ary++) {
6904 PTR_TBL_ENT_t **curentp, **entp, *ent;
6907 curentp = ary + oldsize;
6908 for (entp = ary, ent = *ary; ent; ent = *entp) {
6909 if ((newsize & PTR2UV(ent->oldval)) != i) {
6911 ent->next = *curentp;
6926 Perl_sv_dup(pTHX_ SV *sstr)
6930 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6932 /* look for it in the table first */
6933 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6937 /* create anew and remember what it is */
6939 ptr_table_store(PL_ptr_table, sstr, dstr);
6942 SvFLAGS(dstr) = SvFLAGS(sstr);
6943 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6944 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6947 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6948 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6949 PL_watch_pvx, SvPVX(sstr));
6952 switch (SvTYPE(sstr)) {
6957 SvANY(dstr) = new_XIV();
6958 SvIVX(dstr) = SvIVX(sstr);
6961 SvANY(dstr) = new_XNV();
6962 SvNVX(dstr) = SvNVX(sstr);
6965 SvANY(dstr) = new_XRV();
6966 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6969 SvANY(dstr) = new_XPV();
6970 SvCUR(dstr) = SvCUR(sstr);
6971 SvLEN(dstr) = SvLEN(sstr);
6973 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6974 else if (SvPVX(sstr) && SvLEN(sstr))
6975 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6977 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6980 SvANY(dstr) = new_XPVIV();
6981 SvCUR(dstr) = SvCUR(sstr);
6982 SvLEN(dstr) = SvLEN(sstr);
6983 SvIVX(dstr) = SvIVX(sstr);
6985 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6986 else if (SvPVX(sstr) && SvLEN(sstr))
6987 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6989 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6992 SvANY(dstr) = new_XPVNV();
6993 SvCUR(dstr) = SvCUR(sstr);
6994 SvLEN(dstr) = SvLEN(sstr);
6995 SvIVX(dstr) = SvIVX(sstr);
6996 SvNVX(dstr) = SvNVX(sstr);
6998 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6999 else if (SvPVX(sstr) && SvLEN(sstr))
7000 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7002 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7005 SvANY(dstr) = new_XPVMG();
7006 SvCUR(dstr) = SvCUR(sstr);
7007 SvLEN(dstr) = SvLEN(sstr);
7008 SvIVX(dstr) = SvIVX(sstr);
7009 SvNVX(dstr) = SvNVX(sstr);
7010 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7011 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7013 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7014 else if (SvPVX(sstr) && SvLEN(sstr))
7015 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7017 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7020 SvANY(dstr) = new_XPVBM();
7021 SvCUR(dstr) = SvCUR(sstr);
7022 SvLEN(dstr) = SvLEN(sstr);
7023 SvIVX(dstr) = SvIVX(sstr);
7024 SvNVX(dstr) = SvNVX(sstr);
7025 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7026 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7028 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7029 else if (SvPVX(sstr) && SvLEN(sstr))
7030 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7032 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7033 BmRARE(dstr) = BmRARE(sstr);
7034 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7035 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7038 SvANY(dstr) = new_XPVLV();
7039 SvCUR(dstr) = SvCUR(sstr);
7040 SvLEN(dstr) = SvLEN(sstr);
7041 SvIVX(dstr) = SvIVX(sstr);
7042 SvNVX(dstr) = SvNVX(sstr);
7043 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7044 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7046 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7047 else if (SvPVX(sstr) && SvLEN(sstr))
7048 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7050 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7051 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7052 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7053 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7054 LvTYPE(dstr) = LvTYPE(sstr);
7057 SvANY(dstr) = new_XPVGV();
7058 SvCUR(dstr) = SvCUR(sstr);
7059 SvLEN(dstr) = SvLEN(sstr);
7060 SvIVX(dstr) = SvIVX(sstr);
7061 SvNVX(dstr) = SvNVX(sstr);
7062 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7063 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7065 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7066 else if (SvPVX(sstr) && SvLEN(sstr))
7067 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7069 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7070 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7071 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7072 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7073 GvFLAGS(dstr) = GvFLAGS(sstr);
7074 GvGP(dstr) = gp_dup(GvGP(sstr));
7075 (void)GpREFCNT_inc(GvGP(dstr));
7078 SvANY(dstr) = new_XPVIO();
7079 SvCUR(dstr) = SvCUR(sstr);
7080 SvLEN(dstr) = SvLEN(sstr);
7081 SvIVX(dstr) = SvIVX(sstr);
7082 SvNVX(dstr) = SvNVX(sstr);
7083 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7084 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7086 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7087 else if (SvPVX(sstr) && SvLEN(sstr))
7088 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7090 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7091 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7092 if (IoOFP(sstr) == IoIFP(sstr))
7093 IoOFP(dstr) = IoIFP(dstr);
7095 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7096 /* PL_rsfp_filters entries have fake IoDIRP() */
7097 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7098 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7100 IoDIRP(dstr) = IoDIRP(sstr);
7101 IoLINES(dstr) = IoLINES(sstr);
7102 IoPAGE(dstr) = IoPAGE(sstr);
7103 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7104 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7105 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7106 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7107 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7108 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7109 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7110 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7111 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7112 IoTYPE(dstr) = IoTYPE(sstr);
7113 IoFLAGS(dstr) = IoFLAGS(sstr);
7116 SvANY(dstr) = new_XPVAV();
7117 SvCUR(dstr) = SvCUR(sstr);
7118 SvLEN(dstr) = SvLEN(sstr);
7119 SvIVX(dstr) = SvIVX(sstr);
7120 SvNVX(dstr) = SvNVX(sstr);
7121 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7122 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7123 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7124 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7125 if (AvARRAY((AV*)sstr)) {
7126 SV **dst_ary, **src_ary;
7127 SSize_t items = AvFILLp((AV*)sstr) + 1;
7129 src_ary = AvARRAY((AV*)sstr);
7130 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7131 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7132 SvPVX(dstr) = (char*)dst_ary;
7133 AvALLOC((AV*)dstr) = dst_ary;
7134 if (AvREAL((AV*)sstr)) {
7136 *dst_ary++ = sv_dup_inc(*src_ary++);
7140 *dst_ary++ = sv_dup(*src_ary++);
7142 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7143 while (items-- > 0) {
7144 *dst_ary++ = &PL_sv_undef;
7148 SvPVX(dstr) = Nullch;
7149 AvALLOC((AV*)dstr) = (SV**)NULL;
7153 SvANY(dstr) = new_XPVHV();
7154 SvCUR(dstr) = SvCUR(sstr);
7155 SvLEN(dstr) = SvLEN(sstr);
7156 SvIVX(dstr) = SvIVX(sstr);
7157 SvNVX(dstr) = SvNVX(sstr);
7158 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7159 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7160 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7161 if (HvARRAY((HV*)sstr)) {
7163 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7164 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7165 Newz(0, dxhv->xhv_array,
7166 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7167 while (i <= sxhv->xhv_max) {
7168 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7169 !!HvSHAREKEYS(sstr));
7172 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7175 SvPVX(dstr) = Nullch;
7176 HvEITER((HV*)dstr) = (HE*)NULL;
7178 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7179 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7182 SvANY(dstr) = new_XPVFM();
7183 FmLINES(dstr) = FmLINES(sstr);
7187 SvANY(dstr) = new_XPVCV();
7189 SvCUR(dstr) = SvCUR(sstr);
7190 SvLEN(dstr) = SvLEN(sstr);
7191 SvIVX(dstr) = SvIVX(sstr);
7192 SvNVX(dstr) = SvNVX(sstr);
7193 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7194 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7195 if (SvPVX(sstr) && SvLEN(sstr))
7196 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7198 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7199 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7200 CvSTART(dstr) = CvSTART(sstr);
7201 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7202 CvXSUB(dstr) = CvXSUB(sstr);
7203 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7204 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7205 CvDEPTH(dstr) = CvDEPTH(sstr);
7206 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7207 /* XXX padlists are real, but pretend to be not */
7208 AvREAL_on(CvPADLIST(sstr));
7209 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7210 AvREAL_off(CvPADLIST(sstr));
7211 AvREAL_off(CvPADLIST(dstr));
7214 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7215 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7216 CvFLAGS(dstr) = CvFLAGS(sstr);
7219 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7223 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7230 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7235 return (PERL_CONTEXT*)NULL;
7237 /* look for it in the table first */
7238 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7242 /* create anew and remember what it is */
7243 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7244 ptr_table_store(PL_ptr_table, cxs, ncxs);
7247 PERL_CONTEXT *cx = &cxs[ix];
7248 PERL_CONTEXT *ncx = &ncxs[ix];
7249 ncx->cx_type = cx->cx_type;
7250 if (CxTYPE(cx) == CXt_SUBST) {
7251 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7254 ncx->blk_oldsp = cx->blk_oldsp;
7255 ncx->blk_oldcop = cx->blk_oldcop;
7256 ncx->blk_oldretsp = cx->blk_oldretsp;
7257 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7258 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7259 ncx->blk_oldpm = cx->blk_oldpm;
7260 ncx->blk_gimme = cx->blk_gimme;
7261 switch (CxTYPE(cx)) {
7263 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7264 ? cv_dup_inc(cx->blk_sub.cv)
7265 : cv_dup(cx->blk_sub.cv));
7266 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7267 ? av_dup_inc(cx->blk_sub.argarray)
7269 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7270 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7271 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7272 ncx->blk_sub.lval = cx->blk_sub.lval;
7275 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7276 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7277 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7278 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7279 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7282 ncx->blk_loop.label = cx->blk_loop.label;
7283 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7284 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7285 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7286 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7287 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7288 ? cx->blk_loop.iterdata
7289 : gv_dup((GV*)cx->blk_loop.iterdata));
7290 ncx->blk_loop.oldcurpad
7291 = (SV**)ptr_table_fetch(PL_ptr_table,
7292 cx->blk_loop.oldcurpad);
7293 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7294 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7295 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7296 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7297 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7300 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7301 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7302 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7303 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7316 Perl_si_dup(pTHX_ PERL_SI *si)
7321 return (PERL_SI*)NULL;
7323 /* look for it in the table first */
7324 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7328 /* create anew and remember what it is */
7329 Newz(56, nsi, 1, PERL_SI);
7330 ptr_table_store(PL_ptr_table, si, nsi);
7332 nsi->si_stack = av_dup_inc(si->si_stack);
7333 nsi->si_cxix = si->si_cxix;
7334 nsi->si_cxmax = si->si_cxmax;
7335 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7336 nsi->si_type = si->si_type;
7337 nsi->si_prev = si_dup(si->si_prev);
7338 nsi->si_next = si_dup(si->si_next);
7339 nsi->si_markoff = si->si_markoff;
7344 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7345 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7346 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7347 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7348 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7349 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7350 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7351 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7352 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7353 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7354 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7355 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7358 #define pv_dup_inc(p) SAVEPV(p)
7359 #define pv_dup(p) SAVEPV(p)
7360 #define svp_dup_inc(p,pp) any_dup(p,pp)
7363 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7370 /* look for it in the table first */
7371 ret = ptr_table_fetch(PL_ptr_table, v);
7375 /* see if it is part of the interpreter structure */
7376 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7377 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7385 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7387 ANY *ss = proto_perl->Tsavestack;
7388 I32 ix = proto_perl->Tsavestack_ix;
7389 I32 max = proto_perl->Tsavestack_max;
7402 void (*dptr) (void*);
7403 void (*dxptr) (pTHXo_ void*);
7406 Newz(54, nss, max, ANY);
7412 case SAVEt_ITEM: /* normal string */
7413 sv = (SV*)POPPTR(ss,ix);
7414 TOPPTR(nss,ix) = sv_dup_inc(sv);
7415 sv = (SV*)POPPTR(ss,ix);
7416 TOPPTR(nss,ix) = sv_dup_inc(sv);
7418 case SAVEt_SV: /* scalar reference */
7419 sv = (SV*)POPPTR(ss,ix);
7420 TOPPTR(nss,ix) = sv_dup_inc(sv);
7421 gv = (GV*)POPPTR(ss,ix);
7422 TOPPTR(nss,ix) = gv_dup_inc(gv);
7424 case SAVEt_GENERIC_PVREF: /* generic char* */
7425 c = (char*)POPPTR(ss,ix);
7426 TOPPTR(nss,ix) = pv_dup(c);
7427 ptr = POPPTR(ss,ix);
7428 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7430 case SAVEt_GENERIC_SVREF: /* generic sv */
7431 case SAVEt_SVREF: /* scalar reference */
7432 sv = (SV*)POPPTR(ss,ix);
7433 TOPPTR(nss,ix) = sv_dup_inc(sv);
7434 ptr = POPPTR(ss,ix);
7435 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7437 case SAVEt_AV: /* array reference */
7438 av = (AV*)POPPTR(ss,ix);
7439 TOPPTR(nss,ix) = av_dup_inc(av);
7440 gv = (GV*)POPPTR(ss,ix);
7441 TOPPTR(nss,ix) = gv_dup(gv);
7443 case SAVEt_HV: /* hash reference */
7444 hv = (HV*)POPPTR(ss,ix);
7445 TOPPTR(nss,ix) = hv_dup_inc(hv);
7446 gv = (GV*)POPPTR(ss,ix);
7447 TOPPTR(nss,ix) = gv_dup(gv);
7449 case SAVEt_INT: /* int reference */
7450 ptr = POPPTR(ss,ix);
7451 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7452 intval = (int)POPINT(ss,ix);
7453 TOPINT(nss,ix) = intval;
7455 case SAVEt_LONG: /* long reference */
7456 ptr = POPPTR(ss,ix);
7457 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7458 longval = (long)POPLONG(ss,ix);
7459 TOPLONG(nss,ix) = longval;
7461 case SAVEt_I32: /* I32 reference */
7462 case SAVEt_I16: /* I16 reference */
7463 case SAVEt_I8: /* I8 reference */
7464 ptr = POPPTR(ss,ix);
7465 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7469 case SAVEt_IV: /* IV reference */
7470 ptr = POPPTR(ss,ix);
7471 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7475 case SAVEt_SPTR: /* SV* reference */
7476 ptr = POPPTR(ss,ix);
7477 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7478 sv = (SV*)POPPTR(ss,ix);
7479 TOPPTR(nss,ix) = sv_dup(sv);
7481 case SAVEt_VPTR: /* random* reference */
7482 ptr = POPPTR(ss,ix);
7483 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7484 ptr = POPPTR(ss,ix);
7485 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7487 case SAVEt_PPTR: /* char* reference */
7488 ptr = POPPTR(ss,ix);
7489 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7490 c = (char*)POPPTR(ss,ix);
7491 TOPPTR(nss,ix) = pv_dup(c);
7493 case SAVEt_HPTR: /* HV* reference */
7494 ptr = POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7496 hv = (HV*)POPPTR(ss,ix);
7497 TOPPTR(nss,ix) = hv_dup(hv);
7499 case SAVEt_APTR: /* AV* reference */
7500 ptr = POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7502 av = (AV*)POPPTR(ss,ix);
7503 TOPPTR(nss,ix) = av_dup(av);
7506 gv = (GV*)POPPTR(ss,ix);
7507 TOPPTR(nss,ix) = gv_dup(gv);
7509 case SAVEt_GP: /* scalar reference */
7510 gp = (GP*)POPPTR(ss,ix);
7511 TOPPTR(nss,ix) = gp = gp_dup(gp);
7512 (void)GpREFCNT_inc(gp);
7513 gv = (GV*)POPPTR(ss,ix);
7514 TOPPTR(nss,ix) = gv_dup_inc(c);
7515 c = (char*)POPPTR(ss,ix);
7516 TOPPTR(nss,ix) = pv_dup(c);
7523 sv = (SV*)POPPTR(ss,ix);
7524 TOPPTR(nss,ix) = sv_dup_inc(sv);
7527 ptr = POPPTR(ss,ix);
7528 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7529 /* these are assumed to be refcounted properly */
7530 switch (((OP*)ptr)->op_type) {
7537 TOPPTR(nss,ix) = ptr;
7542 TOPPTR(nss,ix) = Nullop;
7547 TOPPTR(nss,ix) = Nullop;
7550 c = (char*)POPPTR(ss,ix);
7551 TOPPTR(nss,ix) = pv_dup_inc(c);
7554 longval = POPLONG(ss,ix);
7555 TOPLONG(nss,ix) = longval;
7558 hv = (HV*)POPPTR(ss,ix);
7559 TOPPTR(nss,ix) = hv_dup_inc(hv);
7560 c = (char*)POPPTR(ss,ix);
7561 TOPPTR(nss,ix) = pv_dup_inc(c);
7565 case SAVEt_DESTRUCTOR:
7566 ptr = POPPTR(ss,ix);
7567 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7568 dptr = POPDPTR(ss,ix);
7569 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7571 case SAVEt_DESTRUCTOR_X:
7572 ptr = POPPTR(ss,ix);
7573 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7574 dxptr = POPDXPTR(ss,ix);
7575 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7577 case SAVEt_REGCONTEXT:
7583 case SAVEt_STACK_POS: /* Position on Perl stack */
7587 case SAVEt_AELEM: /* array element */
7588 sv = (SV*)POPPTR(ss,ix);
7589 TOPPTR(nss,ix) = sv_dup_inc(sv);
7592 av = (AV*)POPPTR(ss,ix);
7593 TOPPTR(nss,ix) = av_dup_inc(av);
7595 case SAVEt_HELEM: /* hash element */
7596 sv = (SV*)POPPTR(ss,ix);
7597 TOPPTR(nss,ix) = sv_dup_inc(sv);
7598 sv = (SV*)POPPTR(ss,ix);
7599 TOPPTR(nss,ix) = sv_dup_inc(sv);
7600 hv = (HV*)POPPTR(ss,ix);
7601 TOPPTR(nss,ix) = hv_dup_inc(hv);
7604 ptr = POPPTR(ss,ix);
7605 TOPPTR(nss,ix) = ptr;
7612 av = (AV*)POPPTR(ss,ix);
7613 TOPPTR(nss,ix) = av_dup(av);
7616 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7628 perl_clone(PerlInterpreter *proto_perl, UV flags)
7631 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7634 #ifdef PERL_IMPLICIT_SYS
7635 return perl_clone_using(proto_perl, flags,
7637 proto_perl->IMemShared,
7638 proto_perl->IMemParse,
7648 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7649 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7650 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7651 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7652 struct IPerlDir* ipD, struct IPerlSock* ipS,
7653 struct IPerlProc* ipP)
7655 /* XXX many of the string copies here can be optimized if they're
7656 * constants; they need to be allocated as common memory and just
7657 * their pointers copied. */
7661 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7663 PERL_SET_THX(pPerl);
7664 # else /* !PERL_OBJECT */
7665 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7666 PERL_SET_THX(my_perl);
7669 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7674 # else /* !DEBUGGING */
7675 Zero(my_perl, 1, PerlInterpreter);
7676 # endif /* DEBUGGING */
7680 PL_MemShared = ipMS;
7688 # endif /* PERL_OBJECT */
7689 #else /* !PERL_IMPLICIT_SYS */
7691 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7692 PERL_SET_THX(my_perl);
7695 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7700 # else /* !DEBUGGING */
7701 Zero(my_perl, 1, PerlInterpreter);
7702 # endif /* DEBUGGING */
7703 #endif /* PERL_IMPLICIT_SYS */
7706 PL_xiv_arenaroot = NULL;
7708 PL_xnv_arenaroot = NULL;
7710 PL_xrv_arenaroot = NULL;
7712 PL_xpv_arenaroot = NULL;
7714 PL_xpviv_arenaroot = NULL;
7715 PL_xpviv_root = NULL;
7716 PL_xpvnv_arenaroot = NULL;
7717 PL_xpvnv_root = NULL;
7718 PL_xpvcv_arenaroot = NULL;
7719 PL_xpvcv_root = NULL;
7720 PL_xpvav_arenaroot = NULL;
7721 PL_xpvav_root = NULL;
7722 PL_xpvhv_arenaroot = NULL;
7723 PL_xpvhv_root = NULL;
7724 PL_xpvmg_arenaroot = NULL;
7725 PL_xpvmg_root = NULL;
7726 PL_xpvlv_arenaroot = NULL;
7727 PL_xpvlv_root = NULL;
7728 PL_xpvbm_arenaroot = NULL;
7729 PL_xpvbm_root = NULL;
7730 PL_he_arenaroot = NULL;
7732 PL_nice_chunk = NULL;
7733 PL_nice_chunk_size = 0;
7736 PL_sv_root = Nullsv;
7737 PL_sv_arenaroot = Nullsv;
7739 PL_debug = proto_perl->Idebug;
7741 /* create SV map for pointer relocation */
7742 PL_ptr_table = ptr_table_new();
7744 /* initialize these special pointers as early as possible */
7745 SvANY(&PL_sv_undef) = NULL;
7746 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7747 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7748 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7751 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7753 SvANY(&PL_sv_no) = new_XPVNV();
7755 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7756 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7757 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7758 SvCUR(&PL_sv_no) = 0;
7759 SvLEN(&PL_sv_no) = 1;
7760 SvNVX(&PL_sv_no) = 0;
7761 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7764 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7766 SvANY(&PL_sv_yes) = new_XPVNV();
7768 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7769 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7770 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7771 SvCUR(&PL_sv_yes) = 1;
7772 SvLEN(&PL_sv_yes) = 2;
7773 SvNVX(&PL_sv_yes) = 1;
7774 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7776 /* create shared string table */
7777 PL_strtab = newHV();
7778 HvSHAREKEYS_off(PL_strtab);
7779 hv_ksplit(PL_strtab, 512);
7780 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7782 PL_compiling = proto_perl->Icompiling;
7783 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7784 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7785 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7786 if (!specialWARN(PL_compiling.cop_warnings))
7787 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7788 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7790 /* pseudo environmental stuff */
7791 PL_origargc = proto_perl->Iorigargc;
7793 New(0, PL_origargv, i+1, char*);
7794 PL_origargv[i] = '\0';
7796 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7798 PL_envgv = gv_dup(proto_perl->Ienvgv);
7799 PL_incgv = gv_dup(proto_perl->Iincgv);
7800 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7801 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7802 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7803 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7806 PL_minus_c = proto_perl->Iminus_c;
7807 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7808 PL_localpatches = proto_perl->Ilocalpatches;
7809 PL_splitstr = proto_perl->Isplitstr;
7810 PL_preprocess = proto_perl->Ipreprocess;
7811 PL_minus_n = proto_perl->Iminus_n;
7812 PL_minus_p = proto_perl->Iminus_p;
7813 PL_minus_l = proto_perl->Iminus_l;
7814 PL_minus_a = proto_perl->Iminus_a;
7815 PL_minus_F = proto_perl->Iminus_F;
7816 PL_doswitches = proto_perl->Idoswitches;
7817 PL_dowarn = proto_perl->Idowarn;
7818 PL_doextract = proto_perl->Idoextract;
7819 PL_sawampersand = proto_perl->Isawampersand;
7820 PL_unsafe = proto_perl->Iunsafe;
7821 PL_inplace = SAVEPV(proto_perl->Iinplace);
7822 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7823 PL_perldb = proto_perl->Iperldb;
7824 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7826 /* magical thingies */
7827 /* XXX time(&PL_basetime) when asked for? */
7828 PL_basetime = proto_perl->Ibasetime;
7829 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7831 PL_maxsysfd = proto_perl->Imaxsysfd;
7832 PL_multiline = proto_perl->Imultiline;
7833 PL_statusvalue = proto_perl->Istatusvalue;
7835 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7838 /* shortcuts to various I/O objects */
7839 PL_stdingv = gv_dup(proto_perl->Istdingv);
7840 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7841 PL_defgv = gv_dup(proto_perl->Idefgv);
7842 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7843 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7844 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7846 /* shortcuts to regexp stuff */
7847 PL_replgv = gv_dup(proto_perl->Ireplgv);
7849 /* shortcuts to misc objects */
7850 PL_errgv = gv_dup(proto_perl->Ierrgv);
7852 /* shortcuts to debugging objects */
7853 PL_DBgv = gv_dup(proto_perl->IDBgv);
7854 PL_DBline = gv_dup(proto_perl->IDBline);
7855 PL_DBsub = gv_dup(proto_perl->IDBsub);
7856 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7857 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7858 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7859 PL_lineary = av_dup(proto_perl->Ilineary);
7860 PL_dbargs = av_dup(proto_perl->Idbargs);
7863 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7864 PL_curstash = hv_dup(proto_perl->Tcurstash);
7865 PL_debstash = hv_dup(proto_perl->Idebstash);
7866 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7867 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7869 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7870 PL_endav = av_dup_inc(proto_perl->Iendav);
7871 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7872 PL_initav = av_dup_inc(proto_perl->Iinitav);
7874 PL_sub_generation = proto_perl->Isub_generation;
7876 /* funky return mechanisms */
7877 PL_forkprocess = proto_perl->Iforkprocess;
7879 /* subprocess state */
7880 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7882 /* internal state */
7883 PL_tainting = proto_perl->Itainting;
7884 PL_maxo = proto_perl->Imaxo;
7885 if (proto_perl->Iop_mask)
7886 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7888 PL_op_mask = Nullch;
7890 /* current interpreter roots */
7891 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7892 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7893 PL_main_start = proto_perl->Imain_start;
7894 PL_eval_root = proto_perl->Ieval_root;
7895 PL_eval_start = proto_perl->Ieval_start;
7897 /* runtime control stuff */
7898 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7899 PL_copline = proto_perl->Icopline;
7901 PL_filemode = proto_perl->Ifilemode;
7902 PL_lastfd = proto_perl->Ilastfd;
7903 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7906 PL_gensym = proto_perl->Igensym;
7907 PL_preambled = proto_perl->Ipreambled;
7908 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7909 PL_laststatval = proto_perl->Ilaststatval;
7910 PL_laststype = proto_perl->Ilaststype;
7911 PL_mess_sv = Nullsv;
7913 PL_orslen = proto_perl->Iorslen;
7914 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7915 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7917 /* interpreter atexit processing */
7918 PL_exitlistlen = proto_perl->Iexitlistlen;
7919 if (PL_exitlistlen) {
7920 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7921 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7924 PL_exitlist = (PerlExitListEntry*)NULL;
7925 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7927 PL_profiledata = NULL;
7928 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7929 /* PL_rsfp_filters entries have fake IoDIRP() */
7930 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7932 PL_compcv = cv_dup(proto_perl->Icompcv);
7933 PL_comppad = av_dup(proto_perl->Icomppad);
7934 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7935 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7936 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7937 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7938 proto_perl->Tcurpad);
7940 #ifdef HAVE_INTERP_INTERN
7941 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7944 /* more statics moved here */
7945 PL_generation = proto_perl->Igeneration;
7946 PL_DBcv = cv_dup(proto_perl->IDBcv);
7948 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7949 PL_in_clean_all = proto_perl->Iin_clean_all;
7951 PL_uid = proto_perl->Iuid;
7952 PL_euid = proto_perl->Ieuid;
7953 PL_gid = proto_perl->Igid;
7954 PL_egid = proto_perl->Iegid;
7955 PL_nomemok = proto_perl->Inomemok;
7956 PL_an = proto_perl->Ian;
7957 PL_cop_seqmax = proto_perl->Icop_seqmax;
7958 PL_op_seqmax = proto_perl->Iop_seqmax;
7959 PL_evalseq = proto_perl->Ievalseq;
7960 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7961 PL_origalen = proto_perl->Iorigalen;
7962 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7963 PL_osname = SAVEPV(proto_perl->Iosname);
7964 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7965 PL_sighandlerp = proto_perl->Isighandlerp;
7968 PL_runops = proto_perl->Irunops;
7970 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7973 PL_cshlen = proto_perl->Icshlen;
7974 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7977 PL_lex_state = proto_perl->Ilex_state;
7978 PL_lex_defer = proto_perl->Ilex_defer;
7979 PL_lex_expect = proto_perl->Ilex_expect;
7980 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7981 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7982 PL_lex_starts = proto_perl->Ilex_starts;
7983 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7984 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7985 PL_lex_op = proto_perl->Ilex_op;
7986 PL_lex_inpat = proto_perl->Ilex_inpat;
7987 PL_lex_inwhat = proto_perl->Ilex_inwhat;
7988 PL_lex_brackets = proto_perl->Ilex_brackets;
7989 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
7990 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
7991 PL_lex_casemods = proto_perl->Ilex_casemods;
7992 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
7993 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
7995 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
7996 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
7997 PL_nexttoke = proto_perl->Inexttoke;
7999 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8000 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8001 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8002 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8003 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8004 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8005 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8006 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8007 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8008 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8009 PL_pending_ident = proto_perl->Ipending_ident;
8010 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8012 PL_expect = proto_perl->Iexpect;
8014 PL_multi_start = proto_perl->Imulti_start;
8015 PL_multi_end = proto_perl->Imulti_end;
8016 PL_multi_open = proto_perl->Imulti_open;
8017 PL_multi_close = proto_perl->Imulti_close;
8019 PL_error_count = proto_perl->Ierror_count;
8020 PL_subline = proto_perl->Isubline;
8021 PL_subname = sv_dup_inc(proto_perl->Isubname);
8023 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8024 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8025 PL_padix = proto_perl->Ipadix;
8026 PL_padix_floor = proto_perl->Ipadix_floor;
8027 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8029 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8030 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8031 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8032 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8033 PL_last_lop_op = proto_perl->Ilast_lop_op;
8034 PL_in_my = proto_perl->Iin_my;
8035 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8037 PL_cryptseen = proto_perl->Icryptseen;
8040 PL_hints = proto_perl->Ihints;
8042 PL_amagic_generation = proto_perl->Iamagic_generation;
8044 #ifdef USE_LOCALE_COLLATE
8045 PL_collation_ix = proto_perl->Icollation_ix;
8046 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8047 PL_collation_standard = proto_perl->Icollation_standard;
8048 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8049 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8050 #endif /* USE_LOCALE_COLLATE */
8052 #ifdef USE_LOCALE_NUMERIC
8053 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8054 PL_numeric_standard = proto_perl->Inumeric_standard;
8055 PL_numeric_local = proto_perl->Inumeric_local;
8056 PL_numeric_radix = proto_perl->Inumeric_radix;
8057 #endif /* !USE_LOCALE_NUMERIC */
8059 /* utf8 character classes */
8060 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8061 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8062 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8063 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8064 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8065 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8066 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8067 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8068 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8069 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8070 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8071 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8072 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8073 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8074 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8075 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8076 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8079 PL_last_swash_hv = Nullhv; /* reinits on demand */
8080 PL_last_swash_klen = 0;
8081 PL_last_swash_key[0]= '\0';
8082 PL_last_swash_tmps = (U8*)NULL;
8083 PL_last_swash_slen = 0;
8085 /* perly.c globals */
8086 PL_yydebug = proto_perl->Iyydebug;
8087 PL_yynerrs = proto_perl->Iyynerrs;
8088 PL_yyerrflag = proto_perl->Iyyerrflag;
8089 PL_yychar = proto_perl->Iyychar;
8090 PL_yyval = proto_perl->Iyyval;
8091 PL_yylval = proto_perl->Iyylval;
8093 PL_glob_index = proto_perl->Iglob_index;
8094 PL_srand_called = proto_perl->Isrand_called;
8095 PL_uudmap['M'] = 0; /* reinits on demand */
8096 PL_bitcount = Nullch; /* reinits on demand */
8098 if (proto_perl->Ipsig_ptr) {
8099 int sig_num[] = { SIG_NUM };
8100 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8101 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8102 for (i = 1; PL_sig_name[i]; i++) {
8103 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8104 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8108 PL_psig_ptr = (SV**)NULL;
8109 PL_psig_name = (SV**)NULL;
8112 /* thrdvar.h stuff */
8115 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8116 PL_tmps_ix = proto_perl->Ttmps_ix;
8117 PL_tmps_max = proto_perl->Ttmps_max;
8118 PL_tmps_floor = proto_perl->Ttmps_floor;
8119 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8121 while (i <= PL_tmps_ix) {
8122 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8126 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8127 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8128 Newz(54, PL_markstack, i, I32);
8129 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8130 - proto_perl->Tmarkstack);
8131 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8132 - proto_perl->Tmarkstack);
8133 Copy(proto_perl->Tmarkstack, PL_markstack,
8134 PL_markstack_ptr - PL_markstack + 1, I32);
8136 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8137 * NOTE: unlike the others! */
8138 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8139 PL_scopestack_max = proto_perl->Tscopestack_max;
8140 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8141 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8143 /* next push_return() sets PL_retstack[PL_retstack_ix]
8144 * NOTE: unlike the others! */
8145 PL_retstack_ix = proto_perl->Tretstack_ix;
8146 PL_retstack_max = proto_perl->Tretstack_max;
8147 Newz(54, PL_retstack, PL_retstack_max, OP*);
8148 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8150 /* NOTE: si_dup() looks at PL_markstack */
8151 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8153 /* PL_curstack = PL_curstackinfo->si_stack; */
8154 PL_curstack = av_dup(proto_perl->Tcurstack);
8155 PL_mainstack = av_dup(proto_perl->Tmainstack);
8157 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8158 PL_stack_base = AvARRAY(PL_curstack);
8159 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8160 - proto_perl->Tstack_base);
8161 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8163 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8164 * NOTE: unlike the others! */
8165 PL_savestack_ix = proto_perl->Tsavestack_ix;
8166 PL_savestack_max = proto_perl->Tsavestack_max;
8167 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8168 PL_savestack = ss_dup(proto_perl);
8172 ENTER; /* perl_destruct() wants to LEAVE; */
8175 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8176 PL_top_env = &PL_start_env;
8178 PL_op = proto_perl->Top;
8181 PL_Xpv = (XPV*)NULL;
8182 PL_na = proto_perl->Tna;
8184 PL_statbuf = proto_perl->Tstatbuf;
8185 PL_statcache = proto_perl->Tstatcache;
8186 PL_statgv = gv_dup(proto_perl->Tstatgv);
8187 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8189 PL_timesbuf = proto_perl->Ttimesbuf;
8192 PL_tainted = proto_perl->Ttainted;
8193 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8194 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8195 PL_rs = sv_dup_inc(proto_perl->Trs);
8196 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8197 PL_ofslen = proto_perl->Tofslen;
8198 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8199 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8200 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8201 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8202 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8203 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8205 PL_restartop = proto_perl->Trestartop;
8206 PL_in_eval = proto_perl->Tin_eval;
8207 PL_delaymagic = proto_perl->Tdelaymagic;
8208 PL_dirty = proto_perl->Tdirty;
8209 PL_localizing = proto_perl->Tlocalizing;
8211 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8212 PL_protect = proto_perl->Tprotect;
8214 PL_errors = sv_dup_inc(proto_perl->Terrors);
8215 PL_av_fetch_sv = Nullsv;
8216 PL_hv_fetch_sv = Nullsv;
8217 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8218 PL_modcount = proto_perl->Tmodcount;
8219 PL_lastgotoprobe = Nullop;
8220 PL_dumpindent = proto_perl->Tdumpindent;
8222 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8223 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8224 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8225 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8226 PL_sortcxix = proto_perl->Tsortcxix;
8227 PL_efloatbuf = Nullch; /* reinits on demand */
8228 PL_efloatsize = 0; /* reinits on demand */
8232 PL_screamfirst = NULL;
8233 PL_screamnext = NULL;
8234 PL_maxscream = -1; /* reinits on demand */
8235 PL_lastscream = Nullsv;
8237 PL_watchaddr = NULL;
8238 PL_watchok = Nullch;
8240 PL_regdummy = proto_perl->Tregdummy;
8241 PL_regcomp_parse = Nullch;
8242 PL_regxend = Nullch;
8243 PL_regcode = (regnode*)NULL;
8246 PL_regprecomp = Nullch;
8251 PL_seen_zerolen = 0;
8253 PL_regcomp_rx = (regexp*)NULL;
8255 PL_colorset = 0; /* reinits PL_colors[] */
8256 /*PL_colors[6] = {0,0,0,0,0,0};*/
8257 PL_reg_whilem_seen = 0;
8258 PL_reginput = Nullch;
8261 PL_regstartp = (I32*)NULL;
8262 PL_regendp = (I32*)NULL;
8263 PL_reglastparen = (U32*)NULL;
8264 PL_regtill = Nullch;
8266 PL_reg_start_tmp = (char**)NULL;
8267 PL_reg_start_tmpl = 0;
8268 PL_regdata = (struct reg_data*)NULL;
8271 PL_reg_eval_set = 0;
8273 PL_regprogram = (regnode*)NULL;
8275 PL_regcc = (CURCUR*)NULL;
8276 PL_reg_call_cc = (struct re_cc_state*)NULL;
8277 PL_reg_re = (regexp*)NULL;
8278 PL_reg_ganch = Nullch;
8280 PL_reg_magic = (MAGIC*)NULL;
8282 PL_reg_oldcurpm = (PMOP*)NULL;
8283 PL_reg_curpm = (PMOP*)NULL;
8284 PL_reg_oldsaved = Nullch;
8285 PL_reg_oldsavedlen = 0;
8287 PL_reg_leftiter = 0;
8288 PL_reg_poscache = Nullch;
8289 PL_reg_poscache_size= 0;
8291 /* RE engine - function pointers */
8292 PL_regcompp = proto_perl->Tregcompp;
8293 PL_regexecp = proto_perl->Tregexecp;
8294 PL_regint_start = proto_perl->Tregint_start;
8295 PL_regint_string = proto_perl->Tregint_string;
8296 PL_regfree = proto_perl->Tregfree;
8298 PL_reginterp_cnt = 0;
8299 PL_reg_starttry = 0;
8302 return (PerlInterpreter*)pPerl;
8308 #else /* !USE_ITHREADS */
8314 #endif /* USE_ITHREADS */
8317 do_report_used(pTHXo_ SV *sv)
8319 if (SvTYPE(sv) != SVTYPEMASK) {
8320 PerlIO_printf(Perl_debug_log, "****\n");
8326 do_clean_objs(pTHXo_ SV *sv)
8330 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8331 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8332 if (SvWEAKREF(sv)) {
8343 /* XXX Might want to check arrays, etc. */
8346 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8348 do_clean_named_objs(pTHXo_ SV *sv)
8350 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8351 if ( SvOBJECT(GvSV(sv)) ||
8352 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8353 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8354 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8355 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8357 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8365 do_clean_all(pTHXo_ SV *sv)
8367 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8368 SvFLAGS(sv) |= SVf_BREAK;