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);
2441 if (!utf8_to_bytes((U8*)c, &len)) {
2445 Perl_croak("big byte");
2447 SvCUR(sv) = len - 1;
2453 =for apidoc sv_utf8_encode
2455 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2456 flag so that it looks like bytes again. Nothing calls this.
2462 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2464 sv_utf8_upgrade(sv);
2469 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2473 bool has_utf = FALSE;
2474 if (!sv_utf8_downgrade(sv, TRUE))
2477 /* it is actually just a matter of turning the utf8 flag on, but
2478 * we want to make sure everything inside is valid utf8 first.
2481 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2484 while (c < SvEND(sv)) {
2495 /* Note: sv_setsv() should not be called with a source string that needs
2496 * to be reused, since it may destroy the source string if it is marked
2501 =for apidoc sv_setsv
2503 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2504 The source SV may be destroyed if it is mortal. Does not handle 'set'
2505 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2512 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2515 register U32 sflags;
2521 SV_CHECK_THINKFIRST(dstr);
2523 sstr = &PL_sv_undef;
2524 stype = SvTYPE(sstr);
2525 dtype = SvTYPE(dstr);
2529 /* There's a lot of redundancy below but we're going for speed here */
2534 if (dtype != SVt_PVGV) {
2535 (void)SvOK_off(dstr);
2543 sv_upgrade(dstr, SVt_IV);
2546 sv_upgrade(dstr, SVt_PVNV);
2550 sv_upgrade(dstr, SVt_PVIV);
2553 (void)SvIOK_only(dstr);
2554 SvIVX(dstr) = SvIVX(sstr);
2567 sv_upgrade(dstr, SVt_NV);
2572 sv_upgrade(dstr, SVt_PVNV);
2575 SvNVX(dstr) = SvNVX(sstr);
2576 (void)SvNOK_only(dstr);
2584 sv_upgrade(dstr, SVt_RV);
2585 else if (dtype == SVt_PVGV &&
2586 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2589 if (GvIMPORTED(dstr) != GVf_IMPORTED
2590 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2592 GvIMPORTED_on(dstr);
2603 sv_upgrade(dstr, SVt_PV);
2606 if (dtype < SVt_PVIV)
2607 sv_upgrade(dstr, SVt_PVIV);
2610 if (dtype < SVt_PVNV)
2611 sv_upgrade(dstr, SVt_PVNV);
2618 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2619 PL_op_name[PL_op->op_type]);
2621 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2625 if (dtype <= SVt_PVGV) {
2627 if (dtype != SVt_PVGV) {
2628 char *name = GvNAME(sstr);
2629 STRLEN len = GvNAMELEN(sstr);
2630 sv_upgrade(dstr, SVt_PVGV);
2631 sv_magic(dstr, dstr, '*', Nullch, 0);
2632 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2633 GvNAME(dstr) = savepvn(name, len);
2634 GvNAMELEN(dstr) = len;
2635 SvFAKE_on(dstr); /* can coerce to non-glob */
2637 /* ahem, death to those who redefine active sort subs */
2638 else if (PL_curstackinfo->si_type == PERLSI_SORT
2639 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2640 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2642 (void)SvOK_off(dstr);
2643 GvINTRO_off(dstr); /* one-shot flag */
2645 GvGP(dstr) = gp_ref(GvGP(sstr));
2647 if (GvIMPORTED(dstr) != GVf_IMPORTED
2648 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2650 GvIMPORTED_on(dstr);
2658 if (SvGMAGICAL(sstr)) {
2660 if (SvTYPE(sstr) != stype) {
2661 stype = SvTYPE(sstr);
2662 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2666 if (stype == SVt_PVLV)
2667 (void)SvUPGRADE(dstr, SVt_PVNV);
2669 (void)SvUPGRADE(dstr, stype);
2672 sflags = SvFLAGS(sstr);
2674 if (sflags & SVf_ROK) {
2675 if (dtype >= SVt_PV) {
2676 if (dtype == SVt_PVGV) {
2677 SV *sref = SvREFCNT_inc(SvRV(sstr));
2679 int intro = GvINTRO(dstr);
2684 GvINTRO_off(dstr); /* one-shot flag */
2685 Newz(602,gp, 1, GP);
2686 GvGP(dstr) = gp_ref(gp);
2687 GvSV(dstr) = NEWSV(72,0);
2688 GvLINE(dstr) = CopLINE(PL_curcop);
2689 GvEGV(dstr) = (GV*)dstr;
2692 switch (SvTYPE(sref)) {
2695 SAVESPTR(GvAV(dstr));
2697 dref = (SV*)GvAV(dstr);
2698 GvAV(dstr) = (AV*)sref;
2699 if (!GvIMPORTED_AV(dstr)
2700 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2702 GvIMPORTED_AV_on(dstr);
2707 SAVESPTR(GvHV(dstr));
2709 dref = (SV*)GvHV(dstr);
2710 GvHV(dstr) = (HV*)sref;
2711 if (!GvIMPORTED_HV(dstr)
2712 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2714 GvIMPORTED_HV_on(dstr);
2719 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2720 SvREFCNT_dec(GvCV(dstr));
2721 GvCV(dstr) = Nullcv;
2722 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2723 PL_sub_generation++;
2725 SAVESPTR(GvCV(dstr));
2728 dref = (SV*)GvCV(dstr);
2729 if (GvCV(dstr) != (CV*)sref) {
2730 CV* cv = GvCV(dstr);
2732 if (!GvCVGEN((GV*)dstr) &&
2733 (CvROOT(cv) || CvXSUB(cv)))
2735 SV *const_sv = cv_const_sv(cv);
2736 bool const_changed = TRUE;
2738 const_changed = sv_cmp(const_sv,
2739 op_const_sv(CvSTART((CV*)sref),
2741 /* ahem, death to those who redefine
2742 * active sort subs */
2743 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2744 PL_sortcop == CvSTART(cv))
2746 "Can't redefine active sort subroutine %s",
2747 GvENAME((GV*)dstr));
2748 if ((const_changed && const_sv) || ckWARN(WARN_REDEFINE))
2749 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
2750 "Constant subroutine %s redefined"
2751 : "Subroutine %s redefined",
2752 GvENAME((GV*)dstr));
2754 cv_ckproto(cv, (GV*)dstr,
2755 SvPOK(sref) ? SvPVX(sref) : Nullch);
2757 GvCV(dstr) = (CV*)sref;
2758 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2759 GvASSUMECV_on(dstr);
2760 PL_sub_generation++;
2762 if (!GvIMPORTED_CV(dstr)
2763 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2765 GvIMPORTED_CV_on(dstr);
2770 SAVESPTR(GvIOp(dstr));
2772 dref = (SV*)GvIOp(dstr);
2773 GvIOp(dstr) = (IO*)sref;
2777 SAVESPTR(GvFORM(dstr));
2779 dref = (SV*)GvFORM(dstr);
2780 GvFORM(dstr) = (CV*)sref;
2784 SAVESPTR(GvSV(dstr));
2786 dref = (SV*)GvSV(dstr);
2788 if (!GvIMPORTED_SV(dstr)
2789 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2791 GvIMPORTED_SV_on(dstr);
2803 (void)SvOOK_off(dstr); /* backoff */
2805 Safefree(SvPVX(dstr));
2806 SvLEN(dstr)=SvCUR(dstr)=0;
2809 (void)SvOK_off(dstr);
2810 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2812 if (sflags & SVp_NOK) {
2814 SvNVX(dstr) = SvNVX(sstr);
2816 if (sflags & SVp_IOK) {
2817 (void)SvIOK_on(dstr);
2818 SvIVX(dstr) = SvIVX(sstr);
2819 if (sflags & SVf_IVisUV)
2822 if (SvAMAGIC(sstr)) {
2826 else if (sflags & SVp_POK) {
2829 * Check to see if we can just swipe the string. If so, it's a
2830 * possible small lose on short strings, but a big win on long ones.
2831 * It might even be a win on short strings if SvPVX(dstr)
2832 * has to be allocated and SvPVX(sstr) has to be freed.
2835 if (SvTEMP(sstr) && /* slated for free anyway? */
2836 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2837 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2838 SvLEN(sstr)) /* and really is a string */
2840 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2842 SvFLAGS(dstr) &= ~SVf_OOK;
2843 Safefree(SvPVX(dstr) - SvIVX(dstr));
2845 else if (SvLEN(dstr))
2846 Safefree(SvPVX(dstr));
2848 (void)SvPOK_only(dstr);
2849 SvPV_set(dstr, SvPVX(sstr));
2850 SvLEN_set(dstr, SvLEN(sstr));
2851 SvCUR_set(dstr, SvCUR(sstr));
2854 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2855 SvPV_set(sstr, Nullch);
2860 else { /* have to copy actual string */
2861 STRLEN len = SvCUR(sstr);
2863 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2864 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2865 SvCUR_set(dstr, len);
2866 *SvEND(dstr) = '\0';
2867 (void)SvPOK_only(dstr);
2869 if ((sflags & SVf_UTF8) && !IN_BYTE)
2872 if (sflags & SVp_NOK) {
2874 SvNVX(dstr) = SvNVX(sstr);
2876 if (sflags & SVp_IOK) {
2877 (void)SvIOK_on(dstr);
2878 SvIVX(dstr) = SvIVX(sstr);
2879 if (sflags & SVf_IVisUV)
2883 else if (sflags & SVp_NOK) {
2884 SvNVX(dstr) = SvNVX(sstr);
2885 (void)SvNOK_only(dstr);
2886 if (sflags & SVf_IOK) {
2887 (void)SvIOK_on(dstr);
2888 SvIVX(dstr) = SvIVX(sstr);
2889 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2890 if (sflags & SVf_IVisUV)
2894 else if (sflags & SVp_IOK) {
2895 (void)SvIOK_only(dstr);
2896 SvIVX(dstr) = SvIVX(sstr);
2897 if (sflags & SVf_IVisUV)
2901 if (dtype == SVt_PVGV) {
2902 if (ckWARN(WARN_MISC))
2903 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2906 (void)SvOK_off(dstr);
2912 =for apidoc sv_setsv_mg
2914 Like C<sv_setsv>, but also handles 'set' magic.
2920 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2922 sv_setsv(dstr,sstr);
2927 =for apidoc sv_setpvn
2929 Copies a string into an SV. The C<len> parameter indicates the number of
2930 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2936 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2938 register char *dptr;
2939 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2940 elicit a warning, but it won't hurt. */
2941 SV_CHECK_THINKFIRST(sv);
2946 (void)SvUPGRADE(sv, SVt_PV);
2948 SvGROW(sv, len + 1);
2950 Move(ptr,dptr,len,char);
2953 (void)SvPOK_only(sv); /* validate pointer */
2958 =for apidoc sv_setpvn_mg
2960 Like C<sv_setpvn>, but also handles 'set' magic.
2966 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2968 sv_setpvn(sv,ptr,len);
2973 =for apidoc sv_setpv
2975 Copies a string into an SV. The string must be null-terminated. Does not
2976 handle 'set' magic. See C<sv_setpv_mg>.
2982 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
2984 register STRLEN len;
2986 SV_CHECK_THINKFIRST(sv);
2992 (void)SvUPGRADE(sv, SVt_PV);
2994 SvGROW(sv, len + 1);
2995 Move(ptr,SvPVX(sv),len+1,char);
2997 (void)SvPOK_only(sv); /* validate pointer */
3002 =for apidoc sv_setpv_mg
3004 Like C<sv_setpv>, but also handles 'set' magic.
3010 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3017 =for apidoc sv_usepvn
3019 Tells an SV to use C<ptr> to find its string value. Normally the string is
3020 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3021 The C<ptr> should point to memory that was allocated by C<malloc>. The
3022 string length, C<len>, must be supplied. This function will realloc the
3023 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3024 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3025 See C<sv_usepvn_mg>.
3031 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3033 SV_CHECK_THINKFIRST(sv);
3034 (void)SvUPGRADE(sv, SVt_PV);
3039 (void)SvOOK_off(sv);
3040 if (SvPVX(sv) && SvLEN(sv))
3041 Safefree(SvPVX(sv));
3042 Renew(ptr, len+1, char);
3045 SvLEN_set(sv, len+1);
3047 (void)SvPOK_only(sv); /* validate pointer */
3052 =for apidoc sv_usepvn_mg
3054 Like C<sv_usepvn>, but also handles 'set' magic.
3060 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3062 sv_usepvn(sv,ptr,len);
3067 Perl_sv_force_normal(pTHX_ register SV *sv)
3069 if (SvREADONLY(sv)) {
3072 char *pvx = SvPVX(sv);
3073 STRLEN len = SvCUR(sv);
3074 U32 hash = SvUVX(sv);
3075 SvGROW(sv, len + 1);
3076 Move(pvx,SvPVX(sv),len,char);
3080 unsharepvn(pvx,len,hash);
3082 else if (PL_curcop != &PL_compiling)
3083 Perl_croak(aTHX_ PL_no_modify);
3087 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3094 Efficient removal of characters from the beginning of the string buffer.
3095 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3096 the string buffer. The C<ptr> becomes the first character of the adjusted
3103 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3107 register STRLEN delta;
3109 if (!ptr || !SvPOKp(sv))
3111 SV_CHECK_THINKFIRST(sv);
3112 if (SvTYPE(sv) < SVt_PVIV)
3113 sv_upgrade(sv,SVt_PVIV);
3116 if (!SvLEN(sv)) { /* make copy of shared string */
3117 char *pvx = SvPVX(sv);
3118 STRLEN len = SvCUR(sv);
3119 SvGROW(sv, len + 1);
3120 Move(pvx,SvPVX(sv),len,char);
3124 SvFLAGS(sv) |= SVf_OOK;
3126 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3127 delta = ptr - SvPVX(sv);
3135 =for apidoc sv_catpvn
3137 Concatenates the string onto the end of the string which is in the SV. The
3138 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3139 'set' magic. See C<sv_catpvn_mg>.
3145 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3150 junk = SvPV_force(sv, tlen);
3151 SvGROW(sv, tlen + len + 1);
3154 Move(ptr,SvPVX(sv)+tlen,len,char);
3157 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3162 =for apidoc sv_catpvn_mg
3164 Like C<sv_catpvn>, but also handles 'set' magic.
3170 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3172 sv_catpvn(sv,ptr,len);
3177 =for apidoc sv_catsv
3179 Concatenates the string from SV C<ssv> onto the end of the string in SV
3180 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3186 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3192 if ((s = SvPV(sstr, len))) {
3193 if (DO_UTF8(sstr)) {
3194 sv_utf8_upgrade(dstr);
3195 sv_catpvn(dstr,s,len);
3199 sv_catpvn(dstr,s,len);
3204 =for apidoc sv_catsv_mg
3206 Like C<sv_catsv>, but also handles 'set' magic.
3212 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3214 sv_catsv(dstr,sstr);
3219 =for apidoc sv_catpv
3221 Concatenates the string onto the end of the string which is in the SV.
3222 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3228 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3230 register STRLEN len;
3236 junk = SvPV_force(sv, tlen);
3238 SvGROW(sv, tlen + len + 1);
3241 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3243 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3248 =for apidoc sv_catpv_mg
3250 Like C<sv_catpv>, but also handles 'set' magic.
3256 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3263 Perl_newSV(pTHX_ STRLEN len)
3269 sv_upgrade(sv, SVt_PV);
3270 SvGROW(sv, len + 1);
3275 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3278 =for apidoc sv_magic
3280 Adds magic to an SV.
3286 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3290 if (SvREADONLY(sv)) {
3292 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3293 Perl_croak(aTHX_ PL_no_modify);
3295 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3296 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3303 (void)SvUPGRADE(sv, SVt_PVMG);
3305 Newz(702,mg, 1, MAGIC);
3306 mg->mg_moremagic = SvMAGIC(sv);
3309 if (!obj || obj == sv || how == '#' || how == 'r')
3313 mg->mg_obj = SvREFCNT_inc(obj);
3314 mg->mg_flags |= MGf_REFCOUNTED;
3317 mg->mg_len = namlen;
3320 mg->mg_ptr = savepvn(name, namlen);
3321 else if (namlen == HEf_SVKEY)
3322 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3326 mg->mg_virtual = &PL_vtbl_sv;
3329 mg->mg_virtual = &PL_vtbl_amagic;
3332 mg->mg_virtual = &PL_vtbl_amagicelem;
3338 mg->mg_virtual = &PL_vtbl_bm;
3341 mg->mg_virtual = &PL_vtbl_regdata;
3344 mg->mg_virtual = &PL_vtbl_regdatum;
3347 mg->mg_virtual = &PL_vtbl_env;
3350 mg->mg_virtual = &PL_vtbl_fm;
3353 mg->mg_virtual = &PL_vtbl_envelem;
3356 mg->mg_virtual = &PL_vtbl_mglob;
3359 mg->mg_virtual = &PL_vtbl_isa;
3362 mg->mg_virtual = &PL_vtbl_isaelem;
3365 mg->mg_virtual = &PL_vtbl_nkeys;
3372 mg->mg_virtual = &PL_vtbl_dbline;
3376 mg->mg_virtual = &PL_vtbl_mutex;
3378 #endif /* USE_THREADS */
3379 #ifdef USE_LOCALE_COLLATE
3381 mg->mg_virtual = &PL_vtbl_collxfrm;
3383 #endif /* USE_LOCALE_COLLATE */
3385 mg->mg_virtual = &PL_vtbl_pack;
3389 mg->mg_virtual = &PL_vtbl_packelem;
3392 mg->mg_virtual = &PL_vtbl_regexp;
3395 mg->mg_virtual = &PL_vtbl_sig;
3398 mg->mg_virtual = &PL_vtbl_sigelem;
3401 mg->mg_virtual = &PL_vtbl_taint;
3405 mg->mg_virtual = &PL_vtbl_uvar;
3408 mg->mg_virtual = &PL_vtbl_vec;
3411 mg->mg_virtual = &PL_vtbl_substr;
3414 mg->mg_virtual = &PL_vtbl_defelem;
3417 mg->mg_virtual = &PL_vtbl_glob;
3420 mg->mg_virtual = &PL_vtbl_arylen;
3423 mg->mg_virtual = &PL_vtbl_pos;
3426 mg->mg_virtual = &PL_vtbl_backref;
3428 case '~': /* Reserved for use by extensions not perl internals. */
3429 /* Useful for attaching extension internal data to perl vars. */
3430 /* Note that multiple extensions may clash if magical scalars */
3431 /* etc holding private data from one are passed to another. */
3435 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3439 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3443 =for apidoc sv_unmagic
3445 Removes magic from an SV.
3451 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3455 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3458 for (mg = *mgp; mg; mg = *mgp) {
3459 if (mg->mg_type == type) {
3460 MGVTBL* vtbl = mg->mg_virtual;
3461 *mgp = mg->mg_moremagic;
3462 if (vtbl && vtbl->svt_free)
3463 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3464 if (mg->mg_ptr && mg->mg_type != 'g')
3465 if (mg->mg_len >= 0)
3466 Safefree(mg->mg_ptr);
3467 else if (mg->mg_len == HEf_SVKEY)
3468 SvREFCNT_dec((SV*)mg->mg_ptr);
3469 if (mg->mg_flags & MGf_REFCOUNTED)
3470 SvREFCNT_dec(mg->mg_obj);
3474 mgp = &mg->mg_moremagic;
3478 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3485 =for apidoc sv_rvweaken
3493 Perl_sv_rvweaken(pTHX_ SV *sv)
3496 if (!SvOK(sv)) /* let undefs pass */
3499 Perl_croak(aTHX_ "Can't weaken a nonreference");
3500 else if (SvWEAKREF(sv)) {
3502 if (ckWARN(WARN_MISC))
3503 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3507 sv_add_backref(tsv, sv);
3514 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3518 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3519 av = (AV*)mg->mg_obj;
3522 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3523 SvREFCNT_dec(av); /* for sv_magic */
3529 S_sv_del_backref(pTHX_ SV *sv)
3536 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3537 Perl_croak(aTHX_ "panic: del_backref");
3538 av = (AV *)mg->mg_obj;
3543 svp[i] = &PL_sv_undef; /* XXX */
3550 =for apidoc sv_insert
3552 Inserts a string at the specified offset/length within the SV. Similar to
3553 the Perl substr() function.
3559 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3563 register char *midend;
3564 register char *bigend;
3570 Perl_croak(aTHX_ "Can't modify non-existent substring");
3571 SvPV_force(bigstr, curlen);
3572 (void)SvPOK_only_UTF8(bigstr);
3573 if (offset + len > curlen) {
3574 SvGROW(bigstr, offset+len+1);
3575 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3576 SvCUR_set(bigstr, offset+len);
3580 i = littlelen - len;
3581 if (i > 0) { /* string might grow */
3582 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3583 mid = big + offset + len;
3584 midend = bigend = big + SvCUR(bigstr);
3587 while (midend > mid) /* shove everything down */
3588 *--bigend = *--midend;
3589 Move(little,big+offset,littlelen,char);
3595 Move(little,SvPVX(bigstr)+offset,len,char);
3600 big = SvPVX(bigstr);
3603 bigend = big + SvCUR(bigstr);
3605 if (midend > bigend)
3606 Perl_croak(aTHX_ "panic: sv_insert");
3608 if (mid - big > bigend - midend) { /* faster to shorten from end */
3610 Move(little, mid, littlelen,char);
3613 i = bigend - midend;
3615 Move(midend, mid, i,char);
3619 SvCUR_set(bigstr, mid - big);
3622 else if ((i = mid - big)) { /* faster from front */
3623 midend -= littlelen;
3625 sv_chop(bigstr,midend-i);
3630 Move(little, mid, littlelen,char);
3632 else if (littlelen) {
3633 midend -= littlelen;
3634 sv_chop(bigstr,midend);
3635 Move(little,midend,littlelen,char);
3638 sv_chop(bigstr,midend);
3644 =for apidoc sv_replace
3646 Make the first argument a copy of the second, then delete the original.
3652 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3655 U32 refcnt = SvREFCNT(sv);
3656 SV_CHECK_THINKFIRST(sv);
3657 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3658 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3659 if (SvMAGICAL(sv)) {
3663 sv_upgrade(nsv, SVt_PVMG);
3664 SvMAGIC(nsv) = SvMAGIC(sv);
3665 SvFLAGS(nsv) |= SvMAGICAL(sv);
3671 assert(!SvREFCNT(sv));
3672 StructCopy(nsv,sv,SV);
3673 SvREFCNT(sv) = refcnt;
3674 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3679 =for apidoc sv_clear
3681 Clear an SV, making it empty. Does not free the memory used by the SV
3688 Perl_sv_clear(pTHX_ register SV *sv)
3692 assert(SvREFCNT(sv) == 0);
3696 if (PL_defstash) { /* Still have a symbol table? */
3701 Zero(&tmpref, 1, SV);
3702 sv_upgrade(&tmpref, SVt_RV);
3704 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3705 SvREFCNT(&tmpref) = 1;
3708 stash = SvSTASH(sv);
3709 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3712 PUSHSTACKi(PERLSI_DESTROY);
3713 SvRV(&tmpref) = SvREFCNT_inc(sv);
3718 call_sv((SV*)GvCV(destructor),
3719 G_DISCARD|G_EVAL|G_KEEPERR);
3725 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3727 del_XRV(SvANY(&tmpref));
3730 if (PL_in_clean_objs)
3731 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3733 /* DESTROY gave object new lease on life */
3739 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3740 SvOBJECT_off(sv); /* Curse the object. */
3741 if (SvTYPE(sv) != SVt_PVIO)
3742 --PL_sv_objcount; /* XXX Might want something more general */
3745 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3748 switch (SvTYPE(sv)) {
3751 IoIFP(sv) != PerlIO_stdin() &&
3752 IoIFP(sv) != PerlIO_stdout() &&
3753 IoIFP(sv) != PerlIO_stderr())
3755 io_close((IO*)sv, FALSE);
3757 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3758 PerlDir_close(IoDIRP(sv));
3759 IoDIRP(sv) = (DIR*)NULL;
3760 Safefree(IoTOP_NAME(sv));
3761 Safefree(IoFMT_NAME(sv));
3762 Safefree(IoBOTTOM_NAME(sv));
3777 SvREFCNT_dec(LvTARG(sv));
3781 Safefree(GvNAME(sv));
3782 /* cannot decrease stash refcount yet, as we might recursively delete
3783 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3784 of stash until current sv is completely gone.
3785 -- JohnPC, 27 Mar 1998 */
3786 stash = GvSTASH(sv);
3792 (void)SvOOK_off(sv);
3800 SvREFCNT_dec(SvRV(sv));
3802 else if (SvPVX(sv) && SvLEN(sv))
3803 Safefree(SvPVX(sv));
3804 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3805 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3817 switch (SvTYPE(sv)) {
3833 del_XPVIV(SvANY(sv));
3836 del_XPVNV(SvANY(sv));
3839 del_XPVMG(SvANY(sv));
3842 del_XPVLV(SvANY(sv));
3845 del_XPVAV(SvANY(sv));
3848 del_XPVHV(SvANY(sv));
3851 del_XPVCV(SvANY(sv));
3854 del_XPVGV(SvANY(sv));
3855 /* code duplication for increased performance. */
3856 SvFLAGS(sv) &= SVf_BREAK;
3857 SvFLAGS(sv) |= SVTYPEMASK;
3858 /* decrease refcount of the stash that owns this GV, if any */
3860 SvREFCNT_dec(stash);
3861 return; /* not break, SvFLAGS reset already happened */
3863 del_XPVBM(SvANY(sv));
3866 del_XPVFM(SvANY(sv));
3869 del_XPVIO(SvANY(sv));
3872 SvFLAGS(sv) &= SVf_BREAK;
3873 SvFLAGS(sv) |= SVTYPEMASK;
3877 Perl_sv_newref(pTHX_ SV *sv)
3880 ATOMIC_INC(SvREFCNT(sv));
3887 Free the memory used by an SV.
3893 Perl_sv_free(pTHX_ SV *sv)
3896 int refcount_is_zero;
3900 if (SvREFCNT(sv) == 0) {
3901 if (SvFLAGS(sv) & SVf_BREAK)
3903 if (PL_in_clean_all) /* All is fair */
3905 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3906 /* make sure SvREFCNT(sv)==0 happens very seldom */
3907 SvREFCNT(sv) = (~(U32)0)/2;
3910 if (ckWARN_d(WARN_INTERNAL))
3911 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3914 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3915 if (!refcount_is_zero)
3919 if (ckWARN_d(WARN_DEBUGGING))
3920 Perl_warner(aTHX_ WARN_DEBUGGING,
3921 "Attempt to free temp prematurely: SV 0x%"UVxf,
3926 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3927 /* make sure SvREFCNT(sv)==0 happens very seldom */
3928 SvREFCNT(sv) = (~(U32)0)/2;
3939 Returns the length of the string in the SV. See also C<SvCUR>.
3945 Perl_sv_len(pTHX_ register SV *sv)
3954 len = mg_length(sv);
3956 junk = SvPV(sv, len);
3961 =for apidoc sv_len_utf8
3963 Returns the number of characters in the string in an SV, counting wide
3964 UTF8 bytes as a single character.
3970 Perl_sv_len_utf8(pTHX_ register SV *sv)
3981 len = mg_length(sv);
3984 s = (U8*)SvPV(sv, len);
3995 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4000 I32 uoffset = *offsetp;
4006 start = s = (U8*)SvPV(sv, len);
4008 while (s < send && uoffset--)
4012 *offsetp = s - start;
4016 while (s < send && ulen--)
4026 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4035 s = (U8*)SvPV(sv, len);
4037 Perl_croak(aTHX_ "panic: bad byte offset");
4038 send = s + *offsetp;
4046 if (ckWARN_d(WARN_UTF8))
4047 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4057 Returns a boolean indicating whether the strings in the two SVs are
4064 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4071 bool pv1tmp = FALSE;
4072 bool pv2tmp = FALSE;
4079 pv1 = SvPV(sv1, cur1);
4086 pv2 = SvPV(sv2, cur2);
4088 /* do not utf8ize the comparands as a side-effect */
4089 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE && 0) {
4091 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4095 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4101 eq = memEQ(pv1, pv2, cur1);
4114 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4115 string in C<sv1> is less than, equal to, or greater than the string in
4122 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4127 bool pv1tmp = FALSE;
4128 bool pv2tmp = FALSE;
4135 pv1 = SvPV(sv1, cur1);
4142 pv2 = SvPV(sv2, cur2);
4144 /* do not utf8ize the comparands as a side-effect */
4145 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4147 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4151 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4157 cmp = cur2 ? -1 : 0;
4161 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4164 cmp = retval < 0 ? -1 : 1;
4165 } else if (cur1 == cur2) {
4168 cmp = cur1 < cur2 ? -1 : 1;
4181 =for apidoc sv_cmp_locale
4183 Compares the strings in two SVs in a locale-aware manner. See
4190 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4192 #ifdef USE_LOCALE_COLLATE
4198 if (PL_collation_standard)
4202 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4204 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4206 if (!pv1 || !len1) {
4217 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4220 return retval < 0 ? -1 : 1;
4223 * When the result of collation is equality, that doesn't mean
4224 * that there are no differences -- some locales exclude some
4225 * characters from consideration. So to avoid false equalities,
4226 * we use the raw string as a tiebreaker.
4232 #endif /* USE_LOCALE_COLLATE */
4234 return sv_cmp(sv1, sv2);
4237 #ifdef USE_LOCALE_COLLATE
4239 * Any scalar variable may carry an 'o' magic that contains the
4240 * scalar data of the variable transformed to such a format that
4241 * a normal memory comparison can be used to compare the data
4242 * according to the locale settings.
4245 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4249 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4250 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4255 Safefree(mg->mg_ptr);
4257 if ((xf = mem_collxfrm(s, len, &xlen))) {
4258 if (SvREADONLY(sv)) {
4261 return xf + sizeof(PL_collation_ix);
4264 sv_magic(sv, 0, 'o', 0, 0);
4265 mg = mg_find(sv, 'o');
4278 if (mg && mg->mg_ptr) {
4280 return mg->mg_ptr + sizeof(PL_collation_ix);
4288 #endif /* USE_LOCALE_COLLATE */
4293 Get a line from the filehandle and store it into the SV, optionally
4294 appending to the currently-stored string.
4300 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4305 register STDCHAR rslast;
4306 register STDCHAR *bp;
4310 SV_CHECK_THINKFIRST(sv);
4311 (void)SvUPGRADE(sv, SVt_PV);
4315 if (RsSNARF(PL_rs)) {
4319 else if (RsRECORD(PL_rs)) {
4320 I32 recsize, bytesread;
4323 /* Grab the size of the record we're getting */
4324 recsize = SvIV(SvRV(PL_rs));
4325 (void)SvPOK_only(sv); /* Validate pointer */
4326 buffer = SvGROW(sv, recsize + 1);
4329 /* VMS wants read instead of fread, because fread doesn't respect */
4330 /* RMS record boundaries. This is not necessarily a good thing to be */
4331 /* doing, but we've got no other real choice */
4332 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4334 bytesread = PerlIO_read(fp, buffer, recsize);
4336 SvCUR_set(sv, bytesread);
4337 buffer[bytesread] = '\0';
4338 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4340 else if (RsPARA(PL_rs)) {
4345 rsptr = SvPV(PL_rs, rslen);
4346 rslast = rslen ? rsptr[rslen - 1] : '\0';
4348 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4349 do { /* to make sure file boundaries work right */
4352 i = PerlIO_getc(fp);
4356 PerlIO_ungetc(fp,i);
4362 /* See if we know enough about I/O mechanism to cheat it ! */
4364 /* This used to be #ifdef test - it is made run-time test for ease
4365 of abstracting out stdio interface. One call should be cheap
4366 enough here - and may even be a macro allowing compile
4370 if (PerlIO_fast_gets(fp)) {
4373 * We're going to steal some values from the stdio struct
4374 * and put EVERYTHING in the innermost loop into registers.
4376 register STDCHAR *ptr;
4380 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4381 /* An ungetc()d char is handled separately from the regular
4382 * buffer, so we getc() it back out and stuff it in the buffer.
4384 i = PerlIO_getc(fp);
4385 if (i == EOF) return 0;
4386 *(--((*fp)->_ptr)) = (unsigned char) i;
4390 /* Here is some breathtakingly efficient cheating */
4392 cnt = PerlIO_get_cnt(fp); /* get count into register */
4393 (void)SvPOK_only(sv); /* validate pointer */
4394 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4395 if (cnt > 80 && SvLEN(sv) > append) {
4396 shortbuffered = cnt - SvLEN(sv) + append + 1;
4397 cnt -= shortbuffered;
4401 /* remember that cnt can be negative */
4402 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4407 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4408 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4409 DEBUG_P(PerlIO_printf(Perl_debug_log,
4410 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4411 DEBUG_P(PerlIO_printf(Perl_debug_log,
4412 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4413 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4414 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4419 while (cnt > 0) { /* this | eat */
4421 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4422 goto thats_all_folks; /* screams | sed :-) */
4426 Copy(ptr, bp, cnt, char); /* this | eat */
4427 bp += cnt; /* screams | dust */
4428 ptr += cnt; /* louder | sed :-) */
4433 if (shortbuffered) { /* oh well, must extend */
4434 cnt = shortbuffered;
4436 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4438 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4439 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4443 DEBUG_P(PerlIO_printf(Perl_debug_log,
4444 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4445 PTR2UV(ptr),(long)cnt));
4446 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4447 DEBUG_P(PerlIO_printf(Perl_debug_log,
4448 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4449 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4450 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4451 /* This used to call 'filbuf' in stdio form, but as that behaves like
4452 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4453 another abstraction. */
4454 i = PerlIO_getc(fp); /* get more characters */
4455 DEBUG_P(PerlIO_printf(Perl_debug_log,
4456 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4457 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4458 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4459 cnt = PerlIO_get_cnt(fp);
4460 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4461 DEBUG_P(PerlIO_printf(Perl_debug_log,
4462 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4464 if (i == EOF) /* all done for ever? */
4465 goto thats_really_all_folks;
4467 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4469 SvGROW(sv, bpx + cnt + 2);
4470 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4472 *bp++ = i; /* store character from PerlIO_getc */
4474 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4475 goto thats_all_folks;
4479 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4480 memNE((char*)bp - rslen, rsptr, rslen))
4481 goto screamer; /* go back to the fray */
4482 thats_really_all_folks:
4484 cnt += shortbuffered;
4485 DEBUG_P(PerlIO_printf(Perl_debug_log,
4486 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4487 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4488 DEBUG_P(PerlIO_printf(Perl_debug_log,
4489 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4490 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4491 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4493 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4494 DEBUG_P(PerlIO_printf(Perl_debug_log,
4495 "Screamer: done, len=%ld, string=|%.*s|\n",
4496 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4501 /*The big, slow, and stupid way */
4504 /* Need to work around EPOC SDK features */
4505 /* On WINS: MS VC5 generates calls to _chkstk, */
4506 /* if a `large' stack frame is allocated */
4507 /* gcc on MARM does not generate calls like these */
4513 register STDCHAR *bpe = buf + sizeof(buf);
4515 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4516 ; /* keep reading */
4520 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4521 /* Accomodate broken VAXC compiler, which applies U8 cast to
4522 * both args of ?: operator, causing EOF to change into 255
4524 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4528 sv_catpvn(sv, (char *) buf, cnt);
4530 sv_setpvn(sv, (char *) buf, cnt);
4532 if (i != EOF && /* joy */
4534 SvCUR(sv) < rslen ||
4535 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4539 * If we're reading from a TTY and we get a short read,
4540 * indicating that the user hit his EOF character, we need
4541 * to notice it now, because if we try to read from the TTY
4542 * again, the EOF condition will disappear.
4544 * The comparison of cnt to sizeof(buf) is an optimization
4545 * that prevents unnecessary calls to feof().
4549 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4554 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4555 while (i != EOF) { /* to make sure file boundaries work right */
4556 i = PerlIO_getc(fp);
4558 PerlIO_ungetc(fp,i);
4564 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4571 Auto-increment of the value in the SV.
4577 Perl_sv_inc(pTHX_ register SV *sv)
4586 if (SvTHINKFIRST(sv)) {
4587 if (SvREADONLY(sv)) {
4589 if (PL_curcop != &PL_compiling)
4590 Perl_croak(aTHX_ PL_no_modify);
4594 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4596 i = PTR2IV(SvRV(sv));
4601 flags = SvFLAGS(sv);
4602 if (flags & SVp_NOK) {
4603 (void)SvNOK_only(sv);
4607 if (flags & SVp_IOK) {
4609 if (SvUVX(sv) == UV_MAX)
4610 sv_setnv(sv, (NV)UV_MAX + 1.0);
4612 (void)SvIOK_only_UV(sv);
4615 if (SvIVX(sv) == IV_MAX)
4616 sv_setnv(sv, (NV)IV_MAX + 1.0);
4618 (void)SvIOK_only(sv);
4624 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4625 if ((flags & SVTYPEMASK) < SVt_PVNV)
4626 sv_upgrade(sv, SVt_NV);
4628 (void)SvNOK_only(sv);
4632 while (isALPHA(*d)) d++;
4633 while (isDIGIT(*d)) d++;
4635 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4639 while (d >= SvPVX(sv)) {
4647 /* MKS: The original code here died if letters weren't consecutive.
4648 * at least it didn't have to worry about non-C locales. The
4649 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4650 * arranged in order (although not consecutively) and that only
4651 * [A-Za-z] are accepted by isALPHA in the C locale.
4653 if (*d != 'z' && *d != 'Z') {
4654 do { ++*d; } while (!isALPHA(*d));
4657 *(d--) -= 'z' - 'a';
4662 *(d--) -= 'z' - 'a' + 1;
4666 /* oh,oh, the number grew */
4667 SvGROW(sv, SvCUR(sv) + 2);
4669 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4680 Auto-decrement of the value in the SV.
4686 Perl_sv_dec(pTHX_ register SV *sv)
4694 if (SvTHINKFIRST(sv)) {
4695 if (SvREADONLY(sv)) {
4697 if (PL_curcop != &PL_compiling)
4698 Perl_croak(aTHX_ PL_no_modify);
4702 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4704 i = PTR2IV(SvRV(sv));
4709 flags = SvFLAGS(sv);
4710 if (flags & SVp_NOK) {
4712 (void)SvNOK_only(sv);
4715 if (flags & SVp_IOK) {
4717 if (SvUVX(sv) == 0) {
4718 (void)SvIOK_only(sv);
4722 (void)SvIOK_only_UV(sv);
4726 if (SvIVX(sv) == IV_MIN)
4727 sv_setnv(sv, (NV)IV_MIN - 1.0);
4729 (void)SvIOK_only(sv);
4735 if (!(flags & SVp_POK)) {
4736 if ((flags & SVTYPEMASK) < SVt_PVNV)
4737 sv_upgrade(sv, SVt_NV);
4739 (void)SvNOK_only(sv);
4742 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4746 =for apidoc sv_mortalcopy
4748 Creates a new SV which is a copy of the original SV. The new SV is marked
4754 /* Make a string that will exist for the duration of the expression
4755 * evaluation. Actually, it may have to last longer than that, but
4756 * hopefully we won't free it until it has been assigned to a
4757 * permanent location. */
4760 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4766 sv_setsv(sv,oldstr);
4768 PL_tmps_stack[++PL_tmps_ix] = sv;
4774 =for apidoc sv_newmortal
4776 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4782 Perl_sv_newmortal(pTHX)
4788 SvFLAGS(sv) = SVs_TEMP;
4790 PL_tmps_stack[++PL_tmps_ix] = sv;
4795 =for apidoc sv_2mortal
4797 Marks an SV as mortal. The SV will be destroyed when the current context
4803 /* same thing without the copying */
4806 Perl_sv_2mortal(pTHX_ register SV *sv)
4811 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4814 PL_tmps_stack[++PL_tmps_ix] = sv;
4822 Creates a new SV and copies a string into it. The reference count for the
4823 SV is set to 1. If C<len> is zero, Perl will compute the length using
4824 strlen(). For efficiency, consider using C<newSVpvn> instead.
4830 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4837 sv_setpvn(sv,s,len);
4842 =for apidoc newSVpvn
4844 Creates a new SV and copies a string into it. The reference count for the
4845 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4846 string. You are responsible for ensuring that the source string is at least
4853 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4858 sv_setpvn(sv,s,len);
4863 =for apidoc newSVpvn_share
4865 Creates a new SV and populates it with a string from
4866 the string table. Turns on READONLY and FAKE.
4867 The idea here is that as string table is used for shared hash
4868 keys these strings will have SvPVX == HeKEY and hash lookup
4869 will avoid string compare.
4875 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4879 PERL_HASH(hash, src, len);
4881 sv_upgrade(sv, SVt_PVIV);
4882 SvPVX(sv) = sharepvn(src, len, hash);
4892 #if defined(PERL_IMPLICIT_CONTEXT)
4894 Perl_newSVpvf_nocontext(const char* pat, ...)
4899 va_start(args, pat);
4900 sv = vnewSVpvf(pat, &args);
4907 =for apidoc newSVpvf
4909 Creates a new SV an initialize it with the string formatted like
4916 Perl_newSVpvf(pTHX_ const char* pat, ...)
4920 va_start(args, pat);
4921 sv = vnewSVpvf(pat, &args);
4927 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4931 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4938 Creates a new SV and copies a floating point value into it.
4939 The reference count for the SV is set to 1.
4945 Perl_newSVnv(pTHX_ NV n)
4957 Creates a new SV and copies an integer into it. The reference count for the
4964 Perl_newSViv(pTHX_ IV i)
4976 Creates a new SV and copies an unsigned integer into it.
4977 The reference count for the SV is set to 1.
4983 Perl_newSVuv(pTHX_ UV u)
4993 =for apidoc newRV_noinc
4995 Creates an RV wrapper for an SV. The reference count for the original
4996 SV is B<not> incremented.
5002 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5008 sv_upgrade(sv, SVt_RV);
5015 /* newRV_inc is #defined to newRV in sv.h */
5017 Perl_newRV(pTHX_ SV *tmpRef)
5019 return newRV_noinc(SvREFCNT_inc(tmpRef));
5025 Creates a new SV which is an exact duplicate of the original SV.
5030 /* make an exact duplicate of old */
5033 Perl_newSVsv(pTHX_ register SV *old)
5040 if (SvTYPE(old) == SVTYPEMASK) {
5041 if (ckWARN_d(WARN_INTERNAL))
5042 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5057 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5065 char todo[PERL_UCHAR_MAX+1];
5070 if (!*s) { /* reset ?? searches */
5071 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5072 pm->op_pmdynflags &= ~PMdf_USED;
5077 /* reset variables */
5079 if (!HvARRAY(stash))
5082 Zero(todo, 256, char);
5084 i = (unsigned char)*s;
5088 max = (unsigned char)*s++;
5089 for ( ; i <= max; i++) {
5092 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5093 for (entry = HvARRAY(stash)[i];
5095 entry = HeNEXT(entry))
5097 if (!todo[(U8)*HeKEY(entry)])
5099 gv = (GV*)HeVAL(entry);
5101 if (SvTHINKFIRST(sv)) {
5102 if (!SvREADONLY(sv) && SvROK(sv))
5107 if (SvTYPE(sv) >= SVt_PV) {
5109 if (SvPVX(sv) != Nullch)
5116 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5118 #ifndef VMS /* VMS has no environ array */
5120 environ[0] = Nullch;
5129 Perl_sv_2io(pTHX_ SV *sv)
5135 switch (SvTYPE(sv)) {
5143 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5147 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5149 return sv_2io(SvRV(sv));
5150 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5156 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5163 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5170 return *gvp = Nullgv, Nullcv;
5171 switch (SvTYPE(sv)) {
5191 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5192 tryAMAGICunDEREF(to_cv);
5195 if (SvTYPE(sv) == SVt_PVCV) {
5204 Perl_croak(aTHX_ "Not a subroutine reference");
5209 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5215 if (lref && !GvCVu(gv)) {
5218 tmpsv = NEWSV(704,0);
5219 gv_efullname3(tmpsv, gv, Nullch);
5220 /* XXX this is probably not what they think they're getting.
5221 * It has the same effect as "sub name;", i.e. just a forward
5223 newSUB(start_subparse(FALSE, 0),
5224 newSVOP(OP_CONST, 0, tmpsv),
5229 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5238 Returns true if the SV has a true value by Perl's rules.
5244 Perl_sv_true(pTHX_ register SV *sv)
5251 if ((tXpv = (XPV*)SvANY(sv)) &&
5252 (tXpv->xpv_cur > 1 ||
5253 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5260 return SvIVX(sv) != 0;
5263 return SvNVX(sv) != 0.0;
5265 return sv_2bool(sv);
5271 Perl_sv_iv(pTHX_ register SV *sv)
5275 return (IV)SvUVX(sv);
5282 Perl_sv_uv(pTHX_ register SV *sv)
5287 return (UV)SvIVX(sv);
5293 Perl_sv_nv(pTHX_ register SV *sv)
5301 Perl_sv_pv(pTHX_ SV *sv)
5308 return sv_2pv(sv, &n_a);
5312 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5318 return sv_2pv(sv, lp);
5322 =for apidoc sv_pvn_force
5324 Get a sensible string out of the SV somehow.
5330 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5334 if (SvTHINKFIRST(sv) && !SvROK(sv))
5335 sv_force_normal(sv);
5341 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5343 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5344 PL_op_name[PL_op->op_type]);
5348 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5353 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5354 SvGROW(sv, len + 1);
5355 Move(s,SvPVX(sv),len,char);
5360 SvPOK_on(sv); /* validate pointer */
5362 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5363 PTR2UV(sv),SvPVX(sv)));
5370 Perl_sv_pvbyte(pTHX_ SV *sv)
5376 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5378 return sv_pvn(sv,lp);
5382 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5384 return sv_pvn_force(sv,lp);
5388 Perl_sv_pvutf8(pTHX_ SV *sv)
5390 sv_utf8_upgrade(sv);
5395 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5397 sv_utf8_upgrade(sv);
5398 return sv_pvn(sv,lp);
5402 =for apidoc sv_pvutf8n_force
5404 Get a sensible UTF8-encoded string out of the SV somehow. See
5411 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5413 sv_utf8_upgrade(sv);
5414 return sv_pvn_force(sv,lp);
5418 =for apidoc sv_reftype
5420 Returns a string describing what the SV is a reference to.
5426 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5428 if (ob && SvOBJECT(sv))
5429 return HvNAME(SvSTASH(sv));
5431 switch (SvTYPE(sv)) {
5445 case SVt_PVLV: return "LVALUE";
5446 case SVt_PVAV: return "ARRAY";
5447 case SVt_PVHV: return "HASH";
5448 case SVt_PVCV: return "CODE";
5449 case SVt_PVGV: return "GLOB";
5450 case SVt_PVFM: return "FORMAT";
5451 case SVt_PVIO: return "IO";
5452 default: return "UNKNOWN";
5458 =for apidoc sv_isobject
5460 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5461 object. If the SV is not an RV, or if the object is not blessed, then this
5468 Perl_sv_isobject(pTHX_ SV *sv)
5485 Returns a boolean indicating whether the SV is blessed into the specified
5486 class. This does not check for subtypes; use C<sv_derived_from> to verify
5487 an inheritance relationship.
5493 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5505 return strEQ(HvNAME(SvSTASH(sv)), name);
5511 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5512 it will be upgraded to one. If C<classname> is non-null then the new SV will
5513 be blessed in the specified package. The new SV is returned and its
5514 reference count is 1.
5520 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5527 SV_CHECK_THINKFIRST(rv);
5530 if (SvTYPE(rv) >= SVt_PVMG) {
5531 U32 refcnt = SvREFCNT(rv);
5535 SvREFCNT(rv) = refcnt;
5538 if (SvTYPE(rv) < SVt_RV)
5539 sv_upgrade(rv, SVt_RV);
5540 else if (SvTYPE(rv) > SVt_RV) {
5541 (void)SvOOK_off(rv);
5542 if (SvPVX(rv) && SvLEN(rv))
5543 Safefree(SvPVX(rv));
5553 HV* stash = gv_stashpv(classname, TRUE);
5554 (void)sv_bless(rv, stash);
5560 =for apidoc sv_setref_pv
5562 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5563 argument will be upgraded to an RV. That RV will be modified to point to
5564 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5565 into the SV. The C<classname> argument indicates the package for the
5566 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5567 will be returned and will have a reference count of 1.
5569 Do not use with other Perl types such as HV, AV, SV, CV, because those
5570 objects will become corrupted by the pointer copy process.
5572 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5578 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5581 sv_setsv(rv, &PL_sv_undef);
5585 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5590 =for apidoc sv_setref_iv
5592 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5593 argument will be upgraded to an RV. That RV will be modified to point to
5594 the new SV. The C<classname> argument indicates the package for the
5595 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5596 will be returned and will have a reference count of 1.
5602 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5604 sv_setiv(newSVrv(rv,classname), iv);
5609 =for apidoc sv_setref_nv
5611 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5612 argument will be upgraded to an RV. That RV will be modified to point to
5613 the new SV. The C<classname> argument indicates the package for the
5614 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5615 will be returned and will have a reference count of 1.
5621 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5623 sv_setnv(newSVrv(rv,classname), nv);
5628 =for apidoc sv_setref_pvn
5630 Copies a string into a new SV, optionally blessing the SV. The length of the
5631 string must be specified with C<n>. The C<rv> argument will be upgraded to
5632 an RV. That RV will be modified to point to the new SV. The C<classname>
5633 argument indicates the package for the blessing. Set C<classname> to
5634 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5635 a reference count of 1.
5637 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5643 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5645 sv_setpvn(newSVrv(rv,classname), pv, n);
5650 =for apidoc sv_bless
5652 Blesses an SV into a specified package. The SV must be an RV. The package
5653 must be designated by its stash (see C<gv_stashpv()>). The reference count
5654 of the SV is unaffected.
5660 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5665 Perl_croak(aTHX_ "Can't bless non-reference value");
5667 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5668 if (SvREADONLY(tmpRef))
5669 Perl_croak(aTHX_ PL_no_modify);
5670 if (SvOBJECT(tmpRef)) {
5671 if (SvTYPE(tmpRef) != SVt_PVIO)
5673 SvREFCNT_dec(SvSTASH(tmpRef));
5676 SvOBJECT_on(tmpRef);
5677 if (SvTYPE(tmpRef) != SVt_PVIO)
5679 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5680 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5691 S_sv_unglob(pTHX_ SV *sv)
5695 assert(SvTYPE(sv) == SVt_PVGV);
5700 SvREFCNT_dec(GvSTASH(sv));
5701 GvSTASH(sv) = Nullhv;
5703 sv_unmagic(sv, '*');
5704 Safefree(GvNAME(sv));
5707 /* need to keep SvANY(sv) in the right arena */
5708 xpvmg = new_XPVMG();
5709 StructCopy(SvANY(sv), xpvmg, XPVMG);
5710 del_XPVGV(SvANY(sv));
5713 SvFLAGS(sv) &= ~SVTYPEMASK;
5714 SvFLAGS(sv) |= SVt_PVMG;
5718 =for apidoc sv_unref
5720 Unsets the RV status of the SV, and decrements the reference count of
5721 whatever was being referenced by the RV. This can almost be thought of
5722 as a reversal of C<newSVrv>. See C<SvROK_off>.
5728 Perl_sv_unref(pTHX_ SV *sv)
5732 if (SvWEAKREF(sv)) {
5740 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5743 sv_2mortal(rv); /* Schedule for freeing later */
5747 Perl_sv_taint(pTHX_ SV *sv)
5749 sv_magic((sv), Nullsv, 't', Nullch, 0);
5753 Perl_sv_untaint(pTHX_ SV *sv)
5755 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5756 MAGIC *mg = mg_find(sv, 't');
5763 Perl_sv_tainted(pTHX_ SV *sv)
5765 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5766 MAGIC *mg = mg_find(sv, 't');
5767 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5774 =for apidoc sv_setpviv
5776 Copies an integer into the given SV, also updating its string value.
5777 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5783 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5785 char buf[TYPE_CHARS(UV)];
5787 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5789 sv_setpvn(sv, ptr, ebuf - ptr);
5794 =for apidoc sv_setpviv_mg
5796 Like C<sv_setpviv>, but also handles 'set' magic.
5802 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5804 char buf[TYPE_CHARS(UV)];
5806 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5808 sv_setpvn(sv, ptr, ebuf - ptr);
5812 #if defined(PERL_IMPLICIT_CONTEXT)
5814 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5818 va_start(args, pat);
5819 sv_vsetpvf(sv, pat, &args);
5825 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5829 va_start(args, pat);
5830 sv_vsetpvf_mg(sv, pat, &args);
5836 =for apidoc sv_setpvf
5838 Processes its arguments like C<sprintf> and sets an SV to the formatted
5839 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5845 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5848 va_start(args, pat);
5849 sv_vsetpvf(sv, pat, &args);
5854 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5856 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5860 =for apidoc sv_setpvf_mg
5862 Like C<sv_setpvf>, but also handles 'set' magic.
5868 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5871 va_start(args, pat);
5872 sv_vsetpvf_mg(sv, pat, &args);
5877 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5879 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5883 #if defined(PERL_IMPLICIT_CONTEXT)
5885 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5889 va_start(args, pat);
5890 sv_vcatpvf(sv, pat, &args);
5895 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5899 va_start(args, pat);
5900 sv_vcatpvf_mg(sv, pat, &args);
5906 =for apidoc sv_catpvf
5908 Processes its arguments like C<sprintf> and appends the formatted output
5909 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5910 typically be called after calling this function to handle 'set' magic.
5916 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5919 va_start(args, pat);
5920 sv_vcatpvf(sv, pat, &args);
5925 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5927 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5931 =for apidoc sv_catpvf_mg
5933 Like C<sv_catpvf>, but also handles 'set' magic.
5939 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5942 va_start(args, pat);
5943 sv_vcatpvf_mg(sv, pat, &args);
5948 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5950 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5955 =for apidoc sv_vsetpvfn
5957 Works like C<vcatpvfn> but copies the text into the SV instead of
5964 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5966 sv_setpvn(sv, "", 0);
5967 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5971 =for apidoc sv_vcatpvfn
5973 Processes its arguments like C<vsprintf> and appends the formatted output
5974 to an SV. Uses an array of SVs if the C style variable argument list is
5975 missing (NULL). When running with taint checks enabled, indicates via
5976 C<maybe_tainted> if results are untrustworthy (often due to the use of
5983 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5991 static char nullstr[] = "(null)";
5994 /* no matter what, this is a string now */
5995 (void)SvPV_force(sv, origlen);
5997 /* special-case "", "%s", and "%_" */
6000 if (patlen == 2 && pat[0] == '%') {
6004 char *s = va_arg(*args, char*);
6005 sv_catpv(sv, s ? s : nullstr);
6007 else if (svix < svmax) {
6008 sv_catsv(sv, *svargs);
6009 if (DO_UTF8(*svargs))
6015 argsv = va_arg(*args, SV*);
6016 sv_catsv(sv, argsv);
6021 /* See comment on '_' below */
6026 patend = (char*)pat + patlen;
6027 for (p = (char*)pat; p < patend; p = q) {
6030 bool vectorize = FALSE;
6037 bool has_precis = FALSE;
6039 bool is_utf = FALSE;
6042 U8 utf8buf[UTF8_MAXLEN];
6043 STRLEN esignlen = 0;
6045 char *eptr = Nullch;
6047 /* Times 4: a decimal digit takes more than 3 binary digits.
6048 * NV_DIG: mantissa takes than many decimal digits.
6049 * Plus 32: Playing safe. */
6050 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6051 /* large enough for "%#.#f" --chip */
6052 /* what about long double NVs? --jhi */
6055 U8 *vecstr = Null(U8*);
6067 STRLEN dotstrlen = 1;
6069 for (q = p; q < patend && *q != '%'; ++q) ;
6071 sv_catpvn(sv, p, q - p);
6100 case '*': /* printf("%*vX",":",$ipv6addr) */
6105 vecsv = va_arg(*args, SV*);
6106 else if (svix < svmax)
6107 vecsv = svargs[svix++];
6110 dotstr = SvPVx(vecsv,dotstrlen);
6129 case '1': case '2': case '3':
6130 case '4': case '5': case '6':
6131 case '7': case '8': case '9':
6134 width = width * 10 + (*q++ - '0');
6139 i = va_arg(*args, int);
6141 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6143 width = (i < 0) ? -i : i;
6154 i = va_arg(*args, int);
6156 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6157 precis = (i < 0) ? 0 : i;
6163 precis = precis * 10 + (*q++ - '0');
6170 vecsv = va_arg(*args, SV*);
6171 vecstr = (U8*)SvPVx(vecsv,veclen);
6172 utf = DO_UTF8(vecsv);
6174 else if (svix < svmax) {
6175 vecsv = svargs[svix++];
6176 vecstr = (U8*)SvPVx(vecsv,veclen);
6177 utf = DO_UTF8(vecsv);
6188 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6199 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6200 if (*(q + 1) == 'l') { /* lld, llf */
6227 uv = va_arg(*args, int);
6229 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6230 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6231 eptr = (char*)utf8buf;
6232 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6244 eptr = va_arg(*args, char*);
6246 #ifdef MACOS_TRADITIONAL
6247 /* On MacOS, %#s format is used for Pascal strings */
6252 elen = strlen(eptr);
6255 elen = sizeof nullstr - 1;
6258 else if (svix < svmax) {
6259 argsv = svargs[svix++];
6260 eptr = SvPVx(argsv, elen);
6261 if (DO_UTF8(argsv)) {
6262 if (has_precis && precis < elen) {
6264 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6267 if (width) { /* fudge width (can't fudge elen) */
6268 width += elen - sv_len_utf8(argsv);
6277 * The "%_" hack might have to be changed someday,
6278 * if ISO or ANSI decide to use '_' for something.
6279 * So we keep it hidden from users' code.
6283 argsv = va_arg(*args,SV*);
6284 eptr = SvPVx(argsv, elen);
6290 if (has_precis && elen > precis)
6300 uv = PTR2UV(va_arg(*args, void*));
6302 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
6322 iv = (IV)utf8_to_uv(vecstr, &ulen, 0);
6332 case 'h': iv = (short)va_arg(*args, int); break;
6333 default: iv = va_arg(*args, int); break;
6334 case 'l': iv = va_arg(*args, long); break;
6335 case 'V': iv = va_arg(*args, IV); break;
6337 case 'q': iv = va_arg(*args, Quad_t); break;
6342 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6344 case 'h': iv = (short)iv; break;
6346 case 'l': iv = (long)iv; break;
6349 case 'q': iv = (Quad_t)iv; break;
6356 esignbuf[esignlen++] = plus;
6360 esignbuf[esignlen++] = '-';
6404 uv = utf8_to_uv(vecstr, &ulen, 0);
6414 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6415 default: uv = va_arg(*args, unsigned); break;
6416 case 'l': uv = va_arg(*args, unsigned long); break;
6417 case 'V': uv = va_arg(*args, UV); break;
6419 case 'q': uv = va_arg(*args, Quad_t); break;
6424 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6426 case 'h': uv = (unsigned short)uv; break;
6428 case 'l': uv = (unsigned long)uv; break;
6431 case 'q': uv = (Quad_t)uv; break;
6437 eptr = ebuf + sizeof ebuf;
6443 p = (char*)((c == 'X')
6444 ? "0123456789ABCDEF" : "0123456789abcdef");
6450 esignbuf[esignlen++] = '0';
6451 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6457 *--eptr = '0' + dig;
6459 if (alt && *eptr != '0')
6465 *--eptr = '0' + dig;
6468 esignbuf[esignlen++] = '0';
6469 esignbuf[esignlen++] = 'b';
6472 default: /* it had better be ten or less */
6473 #if defined(PERL_Y2KWARN)
6474 if (ckWARN(WARN_Y2K)) {
6476 char *s = SvPV(sv,n);
6477 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6478 && (n == 2 || !isDIGIT(s[n-3])))
6480 Perl_warner(aTHX_ WARN_Y2K,
6481 "Possible Y2K bug: %%%c %s",
6482 c, "format string following '19'");
6488 *--eptr = '0' + dig;
6489 } while (uv /= base);
6492 elen = (ebuf + sizeof ebuf) - eptr;
6495 zeros = precis - elen;
6496 else if (precis == 0 && elen == 1 && *eptr == '0')
6501 /* FLOATING POINT */
6504 c = 'f'; /* maybe %F isn't supported here */
6510 /* This is evil, but floating point is even more evil */
6514 nv = va_arg(*args, NV);
6516 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6519 if (c != 'e' && c != 'E') {
6521 (void)Perl_frexp(nv, &i);
6522 if (i == PERL_INT_MIN)
6523 Perl_die(aTHX_ "panic: frexp");
6525 need = BIT_DIGITS(i);
6527 need += has_precis ? precis : 6; /* known default */
6531 need += 20; /* fudge factor */
6532 if (PL_efloatsize < need) {
6533 Safefree(PL_efloatbuf);
6534 PL_efloatsize = need + 20; /* more fudge */
6535 New(906, PL_efloatbuf, PL_efloatsize, char);
6536 PL_efloatbuf[0] = '\0';
6539 eptr = ebuf + sizeof ebuf;
6542 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6544 /* Copy the one or more characters in a long double
6545 * format before the 'base' ([efgEFG]) character to
6546 * the format string. */
6547 static char const prifldbl[] = PERL_PRIfldbl;
6548 char const *p = prifldbl + sizeof(prifldbl) - 3;
6549 while (p >= prifldbl) { *--eptr = *p--; }
6554 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6559 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6572 STORE_NUMERIC_STANDARD_SET_LOCAL();
6573 #ifdef USE_LOCALE_NUMERIC
6574 if (!was_standard && maybe_tainted)
6575 *maybe_tainted = TRUE;
6577 (void)sprintf(PL_efloatbuf, eptr, nv);
6578 RESTORE_NUMERIC_STANDARD();
6581 eptr = PL_efloatbuf;
6582 elen = strlen(PL_efloatbuf);
6589 i = SvCUR(sv) - origlen;
6592 case 'h': *(va_arg(*args, short*)) = i; break;
6593 default: *(va_arg(*args, int*)) = i; break;
6594 case 'l': *(va_arg(*args, long*)) = i; break;
6595 case 'V': *(va_arg(*args, IV*)) = i; break;
6597 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6601 else if (svix < svmax)
6602 sv_setuv_mg(svargs[svix++], (UV)i);
6603 continue; /* not "break" */
6610 if (!args && ckWARN(WARN_PRINTF) &&
6611 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6612 SV *msg = sv_newmortal();
6613 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6614 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6617 Perl_sv_catpvf(aTHX_ msg,
6618 "\"%%%c\"", c & 0xFF);
6620 Perl_sv_catpvf(aTHX_ msg,
6621 "\"%%\\%03"UVof"\"",
6624 sv_catpv(msg, "end of string");
6625 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6628 /* output mangled stuff ... */
6634 /* ... right here, because formatting flags should not apply */
6635 SvGROW(sv, SvCUR(sv) + elen + 1);
6637 memcpy(p, eptr, elen);
6640 SvCUR(sv) = p - SvPVX(sv);
6641 continue; /* not "break" */
6644 have = esignlen + zeros + elen;
6645 need = (have > width ? have : width);
6648 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6650 if (esignlen && fill == '0') {
6651 for (i = 0; i < esignlen; i++)
6655 memset(p, fill, gap);
6658 if (esignlen && fill != '0') {
6659 for (i = 0; i < esignlen; i++)
6663 for (i = zeros; i; i--)
6667 memcpy(p, eptr, elen);
6671 memset(p, ' ', gap);
6676 memcpy(p, dotstr, dotstrlen);
6680 vectorize = FALSE; /* done iterating over vecstr */
6685 SvCUR(sv) = p - SvPVX(sv);
6693 #if defined(USE_ITHREADS)
6695 #if defined(USE_THREADS)
6696 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6699 #ifndef GpREFCNT_inc
6700 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6704 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6705 #define av_dup(s) (AV*)sv_dup((SV*)s)
6706 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6707 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6708 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6709 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6710 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6711 #define io_dup(s) (IO*)sv_dup((SV*)s)
6712 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6713 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6714 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6715 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6716 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6719 Perl_re_dup(pTHX_ REGEXP *r)
6721 /* XXX fix when pmop->op_pmregexp becomes shared */
6722 return ReREFCNT_inc(r);
6726 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6730 return (PerlIO*)NULL;
6732 /* look for it in the table first */
6733 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6737 /* create anew and remember what it is */
6738 ret = PerlIO_fdupopen(fp);
6739 ptr_table_store(PL_ptr_table, fp, ret);
6744 Perl_dirp_dup(pTHX_ DIR *dp)
6753 Perl_gp_dup(pTHX_ GP *gp)
6758 /* look for it in the table first */
6759 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6763 /* create anew and remember what it is */
6764 Newz(0, ret, 1, GP);
6765 ptr_table_store(PL_ptr_table, gp, ret);
6768 ret->gp_refcnt = 0; /* must be before any other dups! */
6769 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6770 ret->gp_io = io_dup_inc(gp->gp_io);
6771 ret->gp_form = cv_dup_inc(gp->gp_form);
6772 ret->gp_av = av_dup_inc(gp->gp_av);
6773 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6774 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6775 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6776 ret->gp_cvgen = gp->gp_cvgen;
6777 ret->gp_flags = gp->gp_flags;
6778 ret->gp_line = gp->gp_line;
6779 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6784 Perl_mg_dup(pTHX_ MAGIC *mg)
6786 MAGIC *mgret = (MAGIC*)NULL;
6789 return (MAGIC*)NULL;
6790 /* look for it in the table first */
6791 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6795 for (; mg; mg = mg->mg_moremagic) {
6797 Newz(0, nmg, 1, MAGIC);
6801 mgprev->mg_moremagic = nmg;
6802 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6803 nmg->mg_private = mg->mg_private;
6804 nmg->mg_type = mg->mg_type;
6805 nmg->mg_flags = mg->mg_flags;
6806 if (mg->mg_type == 'r') {
6807 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6810 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6811 ? sv_dup_inc(mg->mg_obj)
6812 : sv_dup(mg->mg_obj);
6814 nmg->mg_len = mg->mg_len;
6815 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6816 if (mg->mg_ptr && mg->mg_type != 'g') {
6817 if (mg->mg_len >= 0) {
6818 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6819 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6820 AMT *amtp = (AMT*)mg->mg_ptr;
6821 AMT *namtp = (AMT*)nmg->mg_ptr;
6823 for (i = 1; i < NofAMmeth; i++) {
6824 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6828 else if (mg->mg_len == HEf_SVKEY)
6829 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6837 Perl_ptr_table_new(pTHX)
6840 Newz(0, tbl, 1, PTR_TBL_t);
6843 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6848 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6850 PTR_TBL_ENT_t *tblent;
6851 UV hash = PTR2UV(sv);
6853 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6854 for (; tblent; tblent = tblent->next) {
6855 if (tblent->oldval == sv)
6856 return tblent->newval;
6862 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6864 PTR_TBL_ENT_t *tblent, **otblent;
6865 /* XXX this may be pessimal on platforms where pointers aren't good
6866 * hash values e.g. if they grow faster in the most significant
6868 UV hash = PTR2UV(oldv);
6872 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6873 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6874 if (tblent->oldval == oldv) {
6875 tblent->newval = newv;
6880 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6881 tblent->oldval = oldv;
6882 tblent->newval = newv;
6883 tblent->next = *otblent;
6886 if (i && tbl->tbl_items > tbl->tbl_max)
6887 ptr_table_split(tbl);
6891 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6893 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6894 UV oldsize = tbl->tbl_max + 1;
6895 UV newsize = oldsize * 2;
6898 Renew(ary, newsize, PTR_TBL_ENT_t*);
6899 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6900 tbl->tbl_max = --newsize;
6902 for (i=0; i < oldsize; i++, ary++) {
6903 PTR_TBL_ENT_t **curentp, **entp, *ent;
6906 curentp = ary + oldsize;
6907 for (entp = ary, ent = *ary; ent; ent = *entp) {
6908 if ((newsize & PTR2UV(ent->oldval)) != i) {
6910 ent->next = *curentp;
6925 Perl_sv_dup(pTHX_ SV *sstr)
6929 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6931 /* look for it in the table first */
6932 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6936 /* create anew and remember what it is */
6938 ptr_table_store(PL_ptr_table, sstr, dstr);
6941 SvFLAGS(dstr) = SvFLAGS(sstr);
6942 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6943 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6946 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6947 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6948 PL_watch_pvx, SvPVX(sstr));
6951 switch (SvTYPE(sstr)) {
6956 SvANY(dstr) = new_XIV();
6957 SvIVX(dstr) = SvIVX(sstr);
6960 SvANY(dstr) = new_XNV();
6961 SvNVX(dstr) = SvNVX(sstr);
6964 SvANY(dstr) = new_XRV();
6965 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6968 SvANY(dstr) = new_XPV();
6969 SvCUR(dstr) = SvCUR(sstr);
6970 SvLEN(dstr) = SvLEN(sstr);
6972 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6973 else if (SvPVX(sstr) && SvLEN(sstr))
6974 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6976 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6979 SvANY(dstr) = new_XPVIV();
6980 SvCUR(dstr) = SvCUR(sstr);
6981 SvLEN(dstr) = SvLEN(sstr);
6982 SvIVX(dstr) = SvIVX(sstr);
6984 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6985 else if (SvPVX(sstr) && SvLEN(sstr))
6986 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6988 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6991 SvANY(dstr) = new_XPVNV();
6992 SvCUR(dstr) = SvCUR(sstr);
6993 SvLEN(dstr) = SvLEN(sstr);
6994 SvIVX(dstr) = SvIVX(sstr);
6995 SvNVX(dstr) = SvNVX(sstr);
6997 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6998 else if (SvPVX(sstr) && SvLEN(sstr))
6999 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7001 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7004 SvANY(dstr) = new_XPVMG();
7005 SvCUR(dstr) = SvCUR(sstr);
7006 SvLEN(dstr) = SvLEN(sstr);
7007 SvIVX(dstr) = SvIVX(sstr);
7008 SvNVX(dstr) = SvNVX(sstr);
7009 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7010 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7012 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7013 else if (SvPVX(sstr) && SvLEN(sstr))
7014 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7016 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7019 SvANY(dstr) = new_XPVBM();
7020 SvCUR(dstr) = SvCUR(sstr);
7021 SvLEN(dstr) = SvLEN(sstr);
7022 SvIVX(dstr) = SvIVX(sstr);
7023 SvNVX(dstr) = SvNVX(sstr);
7024 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7025 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7027 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7028 else if (SvPVX(sstr) && SvLEN(sstr))
7029 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7031 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7032 BmRARE(dstr) = BmRARE(sstr);
7033 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7034 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7037 SvANY(dstr) = new_XPVLV();
7038 SvCUR(dstr) = SvCUR(sstr);
7039 SvLEN(dstr) = SvLEN(sstr);
7040 SvIVX(dstr) = SvIVX(sstr);
7041 SvNVX(dstr) = SvNVX(sstr);
7042 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7043 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7045 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7046 else if (SvPVX(sstr) && SvLEN(sstr))
7047 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7049 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7050 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7051 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7052 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7053 LvTYPE(dstr) = LvTYPE(sstr);
7056 SvANY(dstr) = new_XPVGV();
7057 SvCUR(dstr) = SvCUR(sstr);
7058 SvLEN(dstr) = SvLEN(sstr);
7059 SvIVX(dstr) = SvIVX(sstr);
7060 SvNVX(dstr) = SvNVX(sstr);
7061 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7062 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7064 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7065 else if (SvPVX(sstr) && SvLEN(sstr))
7066 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7068 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7069 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7070 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7071 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7072 GvFLAGS(dstr) = GvFLAGS(sstr);
7073 GvGP(dstr) = gp_dup(GvGP(sstr));
7074 (void)GpREFCNT_inc(GvGP(dstr));
7077 SvANY(dstr) = new_XPVIO();
7078 SvCUR(dstr) = SvCUR(sstr);
7079 SvLEN(dstr) = SvLEN(sstr);
7080 SvIVX(dstr) = SvIVX(sstr);
7081 SvNVX(dstr) = SvNVX(sstr);
7082 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7083 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7085 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7086 else if (SvPVX(sstr) && SvLEN(sstr))
7087 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7089 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7090 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7091 if (IoOFP(sstr) == IoIFP(sstr))
7092 IoOFP(dstr) = IoIFP(dstr);
7094 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7095 /* PL_rsfp_filters entries have fake IoDIRP() */
7096 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7097 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7099 IoDIRP(dstr) = IoDIRP(sstr);
7100 IoLINES(dstr) = IoLINES(sstr);
7101 IoPAGE(dstr) = IoPAGE(sstr);
7102 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7103 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7104 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7105 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7106 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7107 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7108 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7109 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7110 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7111 IoTYPE(dstr) = IoTYPE(sstr);
7112 IoFLAGS(dstr) = IoFLAGS(sstr);
7115 SvANY(dstr) = new_XPVAV();
7116 SvCUR(dstr) = SvCUR(sstr);
7117 SvLEN(dstr) = SvLEN(sstr);
7118 SvIVX(dstr) = SvIVX(sstr);
7119 SvNVX(dstr) = SvNVX(sstr);
7120 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7121 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7122 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7123 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7124 if (AvARRAY((AV*)sstr)) {
7125 SV **dst_ary, **src_ary;
7126 SSize_t items = AvFILLp((AV*)sstr) + 1;
7128 src_ary = AvARRAY((AV*)sstr);
7129 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7130 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7131 SvPVX(dstr) = (char*)dst_ary;
7132 AvALLOC((AV*)dstr) = dst_ary;
7133 if (AvREAL((AV*)sstr)) {
7135 *dst_ary++ = sv_dup_inc(*src_ary++);
7139 *dst_ary++ = sv_dup(*src_ary++);
7141 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7142 while (items-- > 0) {
7143 *dst_ary++ = &PL_sv_undef;
7147 SvPVX(dstr) = Nullch;
7148 AvALLOC((AV*)dstr) = (SV**)NULL;
7152 SvANY(dstr) = new_XPVHV();
7153 SvCUR(dstr) = SvCUR(sstr);
7154 SvLEN(dstr) = SvLEN(sstr);
7155 SvIVX(dstr) = SvIVX(sstr);
7156 SvNVX(dstr) = SvNVX(sstr);
7157 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7158 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7159 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7160 if (HvARRAY((HV*)sstr)) {
7162 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7163 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7164 Newz(0, dxhv->xhv_array,
7165 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7166 while (i <= sxhv->xhv_max) {
7167 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7168 !!HvSHAREKEYS(sstr));
7171 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7174 SvPVX(dstr) = Nullch;
7175 HvEITER((HV*)dstr) = (HE*)NULL;
7177 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7178 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7181 SvANY(dstr) = new_XPVFM();
7182 FmLINES(dstr) = FmLINES(sstr);
7186 SvANY(dstr) = new_XPVCV();
7188 SvCUR(dstr) = SvCUR(sstr);
7189 SvLEN(dstr) = SvLEN(sstr);
7190 SvIVX(dstr) = SvIVX(sstr);
7191 SvNVX(dstr) = SvNVX(sstr);
7192 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7193 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7194 if (SvPVX(sstr) && SvLEN(sstr))
7195 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7197 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7198 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7199 CvSTART(dstr) = CvSTART(sstr);
7200 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7201 CvXSUB(dstr) = CvXSUB(sstr);
7202 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7203 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7204 CvDEPTH(dstr) = CvDEPTH(sstr);
7205 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7206 /* XXX padlists are real, but pretend to be not */
7207 AvREAL_on(CvPADLIST(sstr));
7208 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7209 AvREAL_off(CvPADLIST(sstr));
7210 AvREAL_off(CvPADLIST(dstr));
7213 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7214 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7215 CvFLAGS(dstr) = CvFLAGS(sstr);
7218 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7222 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7229 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7234 return (PERL_CONTEXT*)NULL;
7236 /* look for it in the table first */
7237 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7241 /* create anew and remember what it is */
7242 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7243 ptr_table_store(PL_ptr_table, cxs, ncxs);
7246 PERL_CONTEXT *cx = &cxs[ix];
7247 PERL_CONTEXT *ncx = &ncxs[ix];
7248 ncx->cx_type = cx->cx_type;
7249 if (CxTYPE(cx) == CXt_SUBST) {
7250 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7253 ncx->blk_oldsp = cx->blk_oldsp;
7254 ncx->blk_oldcop = cx->blk_oldcop;
7255 ncx->blk_oldretsp = cx->blk_oldretsp;
7256 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7257 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7258 ncx->blk_oldpm = cx->blk_oldpm;
7259 ncx->blk_gimme = cx->blk_gimme;
7260 switch (CxTYPE(cx)) {
7262 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7263 ? cv_dup_inc(cx->blk_sub.cv)
7264 : cv_dup(cx->blk_sub.cv));
7265 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7266 ? av_dup_inc(cx->blk_sub.argarray)
7268 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7269 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7270 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7271 ncx->blk_sub.lval = cx->blk_sub.lval;
7274 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7275 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7276 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7277 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7278 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7281 ncx->blk_loop.label = cx->blk_loop.label;
7282 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7283 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7284 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7285 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7286 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7287 ? cx->blk_loop.iterdata
7288 : gv_dup((GV*)cx->blk_loop.iterdata));
7289 ncx->blk_loop.oldcurpad
7290 = (SV**)ptr_table_fetch(PL_ptr_table,
7291 cx->blk_loop.oldcurpad);
7292 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7293 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7294 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7295 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7296 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7299 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7300 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7301 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7302 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7315 Perl_si_dup(pTHX_ PERL_SI *si)
7320 return (PERL_SI*)NULL;
7322 /* look for it in the table first */
7323 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7327 /* create anew and remember what it is */
7328 Newz(56, nsi, 1, PERL_SI);
7329 ptr_table_store(PL_ptr_table, si, nsi);
7331 nsi->si_stack = av_dup_inc(si->si_stack);
7332 nsi->si_cxix = si->si_cxix;
7333 nsi->si_cxmax = si->si_cxmax;
7334 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7335 nsi->si_type = si->si_type;
7336 nsi->si_prev = si_dup(si->si_prev);
7337 nsi->si_next = si_dup(si->si_next);
7338 nsi->si_markoff = si->si_markoff;
7343 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7344 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7345 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7346 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7347 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7348 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7349 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7350 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7351 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7352 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7353 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7354 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7357 #define pv_dup_inc(p) SAVEPV(p)
7358 #define pv_dup(p) SAVEPV(p)
7359 #define svp_dup_inc(p,pp) any_dup(p,pp)
7362 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7369 /* look for it in the table first */
7370 ret = ptr_table_fetch(PL_ptr_table, v);
7374 /* see if it is part of the interpreter structure */
7375 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7376 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7384 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7386 ANY *ss = proto_perl->Tsavestack;
7387 I32 ix = proto_perl->Tsavestack_ix;
7388 I32 max = proto_perl->Tsavestack_max;
7401 void (*dptr) (void*);
7402 void (*dxptr) (pTHXo_ void*);
7405 Newz(54, nss, max, ANY);
7411 case SAVEt_ITEM: /* normal string */
7412 sv = (SV*)POPPTR(ss,ix);
7413 TOPPTR(nss,ix) = sv_dup_inc(sv);
7414 sv = (SV*)POPPTR(ss,ix);
7415 TOPPTR(nss,ix) = sv_dup_inc(sv);
7417 case SAVEt_SV: /* scalar reference */
7418 sv = (SV*)POPPTR(ss,ix);
7419 TOPPTR(nss,ix) = sv_dup_inc(sv);
7420 gv = (GV*)POPPTR(ss,ix);
7421 TOPPTR(nss,ix) = gv_dup_inc(gv);
7423 case SAVEt_GENERIC_PVREF: /* generic char* */
7424 c = (char*)POPPTR(ss,ix);
7425 TOPPTR(nss,ix) = pv_dup(c);
7426 ptr = POPPTR(ss,ix);
7427 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7429 case SAVEt_GENERIC_SVREF: /* generic sv */
7430 case SAVEt_SVREF: /* scalar reference */
7431 sv = (SV*)POPPTR(ss,ix);
7432 TOPPTR(nss,ix) = sv_dup_inc(sv);
7433 ptr = POPPTR(ss,ix);
7434 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7436 case SAVEt_AV: /* array reference */
7437 av = (AV*)POPPTR(ss,ix);
7438 TOPPTR(nss,ix) = av_dup_inc(av);
7439 gv = (GV*)POPPTR(ss,ix);
7440 TOPPTR(nss,ix) = gv_dup(gv);
7442 case SAVEt_HV: /* hash reference */
7443 hv = (HV*)POPPTR(ss,ix);
7444 TOPPTR(nss,ix) = hv_dup_inc(hv);
7445 gv = (GV*)POPPTR(ss,ix);
7446 TOPPTR(nss,ix) = gv_dup(gv);
7448 case SAVEt_INT: /* int reference */
7449 ptr = POPPTR(ss,ix);
7450 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7451 intval = (int)POPINT(ss,ix);
7452 TOPINT(nss,ix) = intval;
7454 case SAVEt_LONG: /* long reference */
7455 ptr = POPPTR(ss,ix);
7456 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7457 longval = (long)POPLONG(ss,ix);
7458 TOPLONG(nss,ix) = longval;
7460 case SAVEt_I32: /* I32 reference */
7461 case SAVEt_I16: /* I16 reference */
7462 case SAVEt_I8: /* I8 reference */
7463 ptr = POPPTR(ss,ix);
7464 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7468 case SAVEt_IV: /* IV reference */
7469 ptr = POPPTR(ss,ix);
7470 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7474 case SAVEt_SPTR: /* SV* reference */
7475 ptr = POPPTR(ss,ix);
7476 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7477 sv = (SV*)POPPTR(ss,ix);
7478 TOPPTR(nss,ix) = sv_dup(sv);
7480 case SAVEt_VPTR: /* random* reference */
7481 ptr = POPPTR(ss,ix);
7482 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7483 ptr = POPPTR(ss,ix);
7484 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7486 case SAVEt_PPTR: /* char* reference */
7487 ptr = POPPTR(ss,ix);
7488 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7489 c = (char*)POPPTR(ss,ix);
7490 TOPPTR(nss,ix) = pv_dup(c);
7492 case SAVEt_HPTR: /* HV* reference */
7493 ptr = POPPTR(ss,ix);
7494 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7495 hv = (HV*)POPPTR(ss,ix);
7496 TOPPTR(nss,ix) = hv_dup(hv);
7498 case SAVEt_APTR: /* AV* reference */
7499 ptr = POPPTR(ss,ix);
7500 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7501 av = (AV*)POPPTR(ss,ix);
7502 TOPPTR(nss,ix) = av_dup(av);
7505 gv = (GV*)POPPTR(ss,ix);
7506 TOPPTR(nss,ix) = gv_dup(gv);
7508 case SAVEt_GP: /* scalar reference */
7509 gp = (GP*)POPPTR(ss,ix);
7510 TOPPTR(nss,ix) = gp = gp_dup(gp);
7511 (void)GpREFCNT_inc(gp);
7512 gv = (GV*)POPPTR(ss,ix);
7513 TOPPTR(nss,ix) = gv_dup_inc(c);
7514 c = (char*)POPPTR(ss,ix);
7515 TOPPTR(nss,ix) = pv_dup(c);
7522 sv = (SV*)POPPTR(ss,ix);
7523 TOPPTR(nss,ix) = sv_dup_inc(sv);
7526 ptr = POPPTR(ss,ix);
7527 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7528 /* these are assumed to be refcounted properly */
7529 switch (((OP*)ptr)->op_type) {
7536 TOPPTR(nss,ix) = ptr;
7541 TOPPTR(nss,ix) = Nullop;
7546 TOPPTR(nss,ix) = Nullop;
7549 c = (char*)POPPTR(ss,ix);
7550 TOPPTR(nss,ix) = pv_dup_inc(c);
7553 longval = POPLONG(ss,ix);
7554 TOPLONG(nss,ix) = longval;
7557 hv = (HV*)POPPTR(ss,ix);
7558 TOPPTR(nss,ix) = hv_dup_inc(hv);
7559 c = (char*)POPPTR(ss,ix);
7560 TOPPTR(nss,ix) = pv_dup_inc(c);
7564 case SAVEt_DESTRUCTOR:
7565 ptr = POPPTR(ss,ix);
7566 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7567 dptr = POPDPTR(ss,ix);
7568 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7570 case SAVEt_DESTRUCTOR_X:
7571 ptr = POPPTR(ss,ix);
7572 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7573 dxptr = POPDXPTR(ss,ix);
7574 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7576 case SAVEt_REGCONTEXT:
7582 case SAVEt_STACK_POS: /* Position on Perl stack */
7586 case SAVEt_AELEM: /* array element */
7587 sv = (SV*)POPPTR(ss,ix);
7588 TOPPTR(nss,ix) = sv_dup_inc(sv);
7591 av = (AV*)POPPTR(ss,ix);
7592 TOPPTR(nss,ix) = av_dup_inc(av);
7594 case SAVEt_HELEM: /* hash element */
7595 sv = (SV*)POPPTR(ss,ix);
7596 TOPPTR(nss,ix) = sv_dup_inc(sv);
7597 sv = (SV*)POPPTR(ss,ix);
7598 TOPPTR(nss,ix) = sv_dup_inc(sv);
7599 hv = (HV*)POPPTR(ss,ix);
7600 TOPPTR(nss,ix) = hv_dup_inc(hv);
7603 ptr = POPPTR(ss,ix);
7604 TOPPTR(nss,ix) = ptr;
7611 av = (AV*)POPPTR(ss,ix);
7612 TOPPTR(nss,ix) = av_dup(av);
7615 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7627 perl_clone(PerlInterpreter *proto_perl, UV flags)
7630 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7633 #ifdef PERL_IMPLICIT_SYS
7634 return perl_clone_using(proto_perl, flags,
7636 proto_perl->IMemShared,
7637 proto_perl->IMemParse,
7647 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7648 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7649 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7650 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7651 struct IPerlDir* ipD, struct IPerlSock* ipS,
7652 struct IPerlProc* ipP)
7654 /* XXX many of the string copies here can be optimized if they're
7655 * constants; they need to be allocated as common memory and just
7656 * their pointers copied. */
7660 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7662 PERL_SET_THX(pPerl);
7663 # else /* !PERL_OBJECT */
7664 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7665 PERL_SET_THX(my_perl);
7668 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7673 # else /* !DEBUGGING */
7674 Zero(my_perl, 1, PerlInterpreter);
7675 # endif /* DEBUGGING */
7679 PL_MemShared = ipMS;
7687 # endif /* PERL_OBJECT */
7688 #else /* !PERL_IMPLICIT_SYS */
7690 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7691 PERL_SET_THX(my_perl);
7694 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7699 # else /* !DEBUGGING */
7700 Zero(my_perl, 1, PerlInterpreter);
7701 # endif /* DEBUGGING */
7702 #endif /* PERL_IMPLICIT_SYS */
7705 PL_xiv_arenaroot = NULL;
7707 PL_xnv_arenaroot = NULL;
7709 PL_xrv_arenaroot = NULL;
7711 PL_xpv_arenaroot = NULL;
7713 PL_xpviv_arenaroot = NULL;
7714 PL_xpviv_root = NULL;
7715 PL_xpvnv_arenaroot = NULL;
7716 PL_xpvnv_root = NULL;
7717 PL_xpvcv_arenaroot = NULL;
7718 PL_xpvcv_root = NULL;
7719 PL_xpvav_arenaroot = NULL;
7720 PL_xpvav_root = NULL;
7721 PL_xpvhv_arenaroot = NULL;
7722 PL_xpvhv_root = NULL;
7723 PL_xpvmg_arenaroot = NULL;
7724 PL_xpvmg_root = NULL;
7725 PL_xpvlv_arenaroot = NULL;
7726 PL_xpvlv_root = NULL;
7727 PL_xpvbm_arenaroot = NULL;
7728 PL_xpvbm_root = NULL;
7729 PL_he_arenaroot = NULL;
7731 PL_nice_chunk = NULL;
7732 PL_nice_chunk_size = 0;
7735 PL_sv_root = Nullsv;
7736 PL_sv_arenaroot = Nullsv;
7738 PL_debug = proto_perl->Idebug;
7740 /* create SV map for pointer relocation */
7741 PL_ptr_table = ptr_table_new();
7743 /* initialize these special pointers as early as possible */
7744 SvANY(&PL_sv_undef) = NULL;
7745 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7746 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7747 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7750 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7752 SvANY(&PL_sv_no) = new_XPVNV();
7754 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7755 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7756 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7757 SvCUR(&PL_sv_no) = 0;
7758 SvLEN(&PL_sv_no) = 1;
7759 SvNVX(&PL_sv_no) = 0;
7760 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7763 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7765 SvANY(&PL_sv_yes) = new_XPVNV();
7767 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7768 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7769 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7770 SvCUR(&PL_sv_yes) = 1;
7771 SvLEN(&PL_sv_yes) = 2;
7772 SvNVX(&PL_sv_yes) = 1;
7773 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7775 /* create shared string table */
7776 PL_strtab = newHV();
7777 HvSHAREKEYS_off(PL_strtab);
7778 hv_ksplit(PL_strtab, 512);
7779 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7781 PL_compiling = proto_perl->Icompiling;
7782 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7783 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7784 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7785 if (!specialWARN(PL_compiling.cop_warnings))
7786 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7787 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7789 /* pseudo environmental stuff */
7790 PL_origargc = proto_perl->Iorigargc;
7792 New(0, PL_origargv, i+1, char*);
7793 PL_origargv[i] = '\0';
7795 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7797 PL_envgv = gv_dup(proto_perl->Ienvgv);
7798 PL_incgv = gv_dup(proto_perl->Iincgv);
7799 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7800 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7801 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7802 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7805 PL_minus_c = proto_perl->Iminus_c;
7806 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7807 PL_localpatches = proto_perl->Ilocalpatches;
7808 PL_splitstr = proto_perl->Isplitstr;
7809 PL_preprocess = proto_perl->Ipreprocess;
7810 PL_minus_n = proto_perl->Iminus_n;
7811 PL_minus_p = proto_perl->Iminus_p;
7812 PL_minus_l = proto_perl->Iminus_l;
7813 PL_minus_a = proto_perl->Iminus_a;
7814 PL_minus_F = proto_perl->Iminus_F;
7815 PL_doswitches = proto_perl->Idoswitches;
7816 PL_dowarn = proto_perl->Idowarn;
7817 PL_doextract = proto_perl->Idoextract;
7818 PL_sawampersand = proto_perl->Isawampersand;
7819 PL_unsafe = proto_perl->Iunsafe;
7820 PL_inplace = SAVEPV(proto_perl->Iinplace);
7821 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7822 PL_perldb = proto_perl->Iperldb;
7823 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7825 /* magical thingies */
7826 /* XXX time(&PL_basetime) when asked for? */
7827 PL_basetime = proto_perl->Ibasetime;
7828 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7830 PL_maxsysfd = proto_perl->Imaxsysfd;
7831 PL_multiline = proto_perl->Imultiline;
7832 PL_statusvalue = proto_perl->Istatusvalue;
7834 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7837 /* shortcuts to various I/O objects */
7838 PL_stdingv = gv_dup(proto_perl->Istdingv);
7839 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7840 PL_defgv = gv_dup(proto_perl->Idefgv);
7841 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7842 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7843 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7845 /* shortcuts to regexp stuff */
7846 PL_replgv = gv_dup(proto_perl->Ireplgv);
7848 /* shortcuts to misc objects */
7849 PL_errgv = gv_dup(proto_perl->Ierrgv);
7851 /* shortcuts to debugging objects */
7852 PL_DBgv = gv_dup(proto_perl->IDBgv);
7853 PL_DBline = gv_dup(proto_perl->IDBline);
7854 PL_DBsub = gv_dup(proto_perl->IDBsub);
7855 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7856 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7857 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7858 PL_lineary = av_dup(proto_perl->Ilineary);
7859 PL_dbargs = av_dup(proto_perl->Idbargs);
7862 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7863 PL_curstash = hv_dup(proto_perl->Tcurstash);
7864 PL_debstash = hv_dup(proto_perl->Idebstash);
7865 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7866 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7868 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7869 PL_endav = av_dup_inc(proto_perl->Iendav);
7870 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7871 PL_initav = av_dup_inc(proto_perl->Iinitav);
7873 PL_sub_generation = proto_perl->Isub_generation;
7875 /* funky return mechanisms */
7876 PL_forkprocess = proto_perl->Iforkprocess;
7878 /* subprocess state */
7879 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7881 /* internal state */
7882 PL_tainting = proto_perl->Itainting;
7883 PL_maxo = proto_perl->Imaxo;
7884 if (proto_perl->Iop_mask)
7885 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7887 PL_op_mask = Nullch;
7889 /* current interpreter roots */
7890 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7891 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7892 PL_main_start = proto_perl->Imain_start;
7893 PL_eval_root = proto_perl->Ieval_root;
7894 PL_eval_start = proto_perl->Ieval_start;
7896 /* runtime control stuff */
7897 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7898 PL_copline = proto_perl->Icopline;
7900 PL_filemode = proto_perl->Ifilemode;
7901 PL_lastfd = proto_perl->Ilastfd;
7902 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7905 PL_gensym = proto_perl->Igensym;
7906 PL_preambled = proto_perl->Ipreambled;
7907 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7908 PL_laststatval = proto_perl->Ilaststatval;
7909 PL_laststype = proto_perl->Ilaststype;
7910 PL_mess_sv = Nullsv;
7912 PL_orslen = proto_perl->Iorslen;
7913 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7914 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7916 /* interpreter atexit processing */
7917 PL_exitlistlen = proto_perl->Iexitlistlen;
7918 if (PL_exitlistlen) {
7919 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7920 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7923 PL_exitlist = (PerlExitListEntry*)NULL;
7924 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7926 PL_profiledata = NULL;
7927 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7928 /* PL_rsfp_filters entries have fake IoDIRP() */
7929 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7931 PL_compcv = cv_dup(proto_perl->Icompcv);
7932 PL_comppad = av_dup(proto_perl->Icomppad);
7933 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7934 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7935 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7936 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7937 proto_perl->Tcurpad);
7939 #ifdef HAVE_INTERP_INTERN
7940 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7943 /* more statics moved here */
7944 PL_generation = proto_perl->Igeneration;
7945 PL_DBcv = cv_dup(proto_perl->IDBcv);
7947 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7948 PL_in_clean_all = proto_perl->Iin_clean_all;
7950 PL_uid = proto_perl->Iuid;
7951 PL_euid = proto_perl->Ieuid;
7952 PL_gid = proto_perl->Igid;
7953 PL_egid = proto_perl->Iegid;
7954 PL_nomemok = proto_perl->Inomemok;
7955 PL_an = proto_perl->Ian;
7956 PL_cop_seqmax = proto_perl->Icop_seqmax;
7957 PL_op_seqmax = proto_perl->Iop_seqmax;
7958 PL_evalseq = proto_perl->Ievalseq;
7959 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7960 PL_origalen = proto_perl->Iorigalen;
7961 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7962 PL_osname = SAVEPV(proto_perl->Iosname);
7963 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7964 PL_sighandlerp = proto_perl->Isighandlerp;
7967 PL_runops = proto_perl->Irunops;
7969 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7972 PL_cshlen = proto_perl->Icshlen;
7973 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7976 PL_lex_state = proto_perl->Ilex_state;
7977 PL_lex_defer = proto_perl->Ilex_defer;
7978 PL_lex_expect = proto_perl->Ilex_expect;
7979 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7980 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7981 PL_lex_starts = proto_perl->Ilex_starts;
7982 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7983 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7984 PL_lex_op = proto_perl->Ilex_op;
7985 PL_lex_inpat = proto_perl->Ilex_inpat;
7986 PL_lex_inwhat = proto_perl->Ilex_inwhat;
7987 PL_lex_brackets = proto_perl->Ilex_brackets;
7988 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
7989 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
7990 PL_lex_casemods = proto_perl->Ilex_casemods;
7991 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
7992 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
7994 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
7995 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
7996 PL_nexttoke = proto_perl->Inexttoke;
7998 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
7999 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8000 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8001 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8002 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8003 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8004 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8005 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8006 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8007 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8008 PL_pending_ident = proto_perl->Ipending_ident;
8009 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8011 PL_expect = proto_perl->Iexpect;
8013 PL_multi_start = proto_perl->Imulti_start;
8014 PL_multi_end = proto_perl->Imulti_end;
8015 PL_multi_open = proto_perl->Imulti_open;
8016 PL_multi_close = proto_perl->Imulti_close;
8018 PL_error_count = proto_perl->Ierror_count;
8019 PL_subline = proto_perl->Isubline;
8020 PL_subname = sv_dup_inc(proto_perl->Isubname);
8022 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8023 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8024 PL_padix = proto_perl->Ipadix;
8025 PL_padix_floor = proto_perl->Ipadix_floor;
8026 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8028 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8029 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8030 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8031 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8032 PL_last_lop_op = proto_perl->Ilast_lop_op;
8033 PL_in_my = proto_perl->Iin_my;
8034 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8036 PL_cryptseen = proto_perl->Icryptseen;
8039 PL_hints = proto_perl->Ihints;
8041 PL_amagic_generation = proto_perl->Iamagic_generation;
8043 #ifdef USE_LOCALE_COLLATE
8044 PL_collation_ix = proto_perl->Icollation_ix;
8045 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8046 PL_collation_standard = proto_perl->Icollation_standard;
8047 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8048 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8049 #endif /* USE_LOCALE_COLLATE */
8051 #ifdef USE_LOCALE_NUMERIC
8052 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8053 PL_numeric_standard = proto_perl->Inumeric_standard;
8054 PL_numeric_local = proto_perl->Inumeric_local;
8055 PL_numeric_radix = proto_perl->Inumeric_radix;
8056 #endif /* !USE_LOCALE_NUMERIC */
8058 /* utf8 character classes */
8059 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8060 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8061 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8062 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8063 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8064 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8065 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8066 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8067 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8068 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8069 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8070 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8071 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8072 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8073 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8074 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8075 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8078 PL_last_swash_hv = Nullhv; /* reinits on demand */
8079 PL_last_swash_klen = 0;
8080 PL_last_swash_key[0]= '\0';
8081 PL_last_swash_tmps = (U8*)NULL;
8082 PL_last_swash_slen = 0;
8084 /* perly.c globals */
8085 PL_yydebug = proto_perl->Iyydebug;
8086 PL_yynerrs = proto_perl->Iyynerrs;
8087 PL_yyerrflag = proto_perl->Iyyerrflag;
8088 PL_yychar = proto_perl->Iyychar;
8089 PL_yyval = proto_perl->Iyyval;
8090 PL_yylval = proto_perl->Iyylval;
8092 PL_glob_index = proto_perl->Iglob_index;
8093 PL_srand_called = proto_perl->Isrand_called;
8094 PL_uudmap['M'] = 0; /* reinits on demand */
8095 PL_bitcount = Nullch; /* reinits on demand */
8097 if (proto_perl->Ipsig_ptr) {
8098 int sig_num[] = { SIG_NUM };
8099 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8100 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8101 for (i = 1; PL_sig_name[i]; i++) {
8102 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8103 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8107 PL_psig_ptr = (SV**)NULL;
8108 PL_psig_name = (SV**)NULL;
8111 /* thrdvar.h stuff */
8114 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8115 PL_tmps_ix = proto_perl->Ttmps_ix;
8116 PL_tmps_max = proto_perl->Ttmps_max;
8117 PL_tmps_floor = proto_perl->Ttmps_floor;
8118 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8120 while (i <= PL_tmps_ix) {
8121 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8125 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8126 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8127 Newz(54, PL_markstack, i, I32);
8128 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8129 - proto_perl->Tmarkstack);
8130 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8131 - proto_perl->Tmarkstack);
8132 Copy(proto_perl->Tmarkstack, PL_markstack,
8133 PL_markstack_ptr - PL_markstack + 1, I32);
8135 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8136 * NOTE: unlike the others! */
8137 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8138 PL_scopestack_max = proto_perl->Tscopestack_max;
8139 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8140 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8142 /* next push_return() sets PL_retstack[PL_retstack_ix]
8143 * NOTE: unlike the others! */
8144 PL_retstack_ix = proto_perl->Tretstack_ix;
8145 PL_retstack_max = proto_perl->Tretstack_max;
8146 Newz(54, PL_retstack, PL_retstack_max, OP*);
8147 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8149 /* NOTE: si_dup() looks at PL_markstack */
8150 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8152 /* PL_curstack = PL_curstackinfo->si_stack; */
8153 PL_curstack = av_dup(proto_perl->Tcurstack);
8154 PL_mainstack = av_dup(proto_perl->Tmainstack);
8156 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8157 PL_stack_base = AvARRAY(PL_curstack);
8158 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8159 - proto_perl->Tstack_base);
8160 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8162 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8163 * NOTE: unlike the others! */
8164 PL_savestack_ix = proto_perl->Tsavestack_ix;
8165 PL_savestack_max = proto_perl->Tsavestack_max;
8166 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8167 PL_savestack = ss_dup(proto_perl);
8171 ENTER; /* perl_destruct() wants to LEAVE; */
8174 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8175 PL_top_env = &PL_start_env;
8177 PL_op = proto_perl->Top;
8180 PL_Xpv = (XPV*)NULL;
8181 PL_na = proto_perl->Tna;
8183 PL_statbuf = proto_perl->Tstatbuf;
8184 PL_statcache = proto_perl->Tstatcache;
8185 PL_statgv = gv_dup(proto_perl->Tstatgv);
8186 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8188 PL_timesbuf = proto_perl->Ttimesbuf;
8191 PL_tainted = proto_perl->Ttainted;
8192 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8193 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8194 PL_rs = sv_dup_inc(proto_perl->Trs);
8195 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8196 PL_ofslen = proto_perl->Tofslen;
8197 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8198 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8199 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8200 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8201 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8202 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8204 PL_restartop = proto_perl->Trestartop;
8205 PL_in_eval = proto_perl->Tin_eval;
8206 PL_delaymagic = proto_perl->Tdelaymagic;
8207 PL_dirty = proto_perl->Tdirty;
8208 PL_localizing = proto_perl->Tlocalizing;
8210 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8211 PL_protect = proto_perl->Tprotect;
8213 PL_errors = sv_dup_inc(proto_perl->Terrors);
8214 PL_av_fetch_sv = Nullsv;
8215 PL_hv_fetch_sv = Nullsv;
8216 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8217 PL_modcount = proto_perl->Tmodcount;
8218 PL_lastgotoprobe = Nullop;
8219 PL_dumpindent = proto_perl->Tdumpindent;
8221 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8222 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8223 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8224 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8225 PL_sortcxix = proto_perl->Tsortcxix;
8226 PL_efloatbuf = Nullch; /* reinits on demand */
8227 PL_efloatsize = 0; /* reinits on demand */
8231 PL_screamfirst = NULL;
8232 PL_screamnext = NULL;
8233 PL_maxscream = -1; /* reinits on demand */
8234 PL_lastscream = Nullsv;
8236 PL_watchaddr = NULL;
8237 PL_watchok = Nullch;
8239 PL_regdummy = proto_perl->Tregdummy;
8240 PL_regcomp_parse = Nullch;
8241 PL_regxend = Nullch;
8242 PL_regcode = (regnode*)NULL;
8245 PL_regprecomp = Nullch;
8250 PL_seen_zerolen = 0;
8252 PL_regcomp_rx = (regexp*)NULL;
8254 PL_colorset = 0; /* reinits PL_colors[] */
8255 /*PL_colors[6] = {0,0,0,0,0,0};*/
8256 PL_reg_whilem_seen = 0;
8257 PL_reginput = Nullch;
8260 PL_regstartp = (I32*)NULL;
8261 PL_regendp = (I32*)NULL;
8262 PL_reglastparen = (U32*)NULL;
8263 PL_regtill = Nullch;
8265 PL_reg_start_tmp = (char**)NULL;
8266 PL_reg_start_tmpl = 0;
8267 PL_regdata = (struct reg_data*)NULL;
8270 PL_reg_eval_set = 0;
8272 PL_regprogram = (regnode*)NULL;
8274 PL_regcc = (CURCUR*)NULL;
8275 PL_reg_call_cc = (struct re_cc_state*)NULL;
8276 PL_reg_re = (regexp*)NULL;
8277 PL_reg_ganch = Nullch;
8279 PL_reg_magic = (MAGIC*)NULL;
8281 PL_reg_oldcurpm = (PMOP*)NULL;
8282 PL_reg_curpm = (PMOP*)NULL;
8283 PL_reg_oldsaved = Nullch;
8284 PL_reg_oldsavedlen = 0;
8286 PL_reg_leftiter = 0;
8287 PL_reg_poscache = Nullch;
8288 PL_reg_poscache_size= 0;
8290 /* RE engine - function pointers */
8291 PL_regcompp = proto_perl->Tregcompp;
8292 PL_regexecp = proto_perl->Tregexecp;
8293 PL_regint_start = proto_perl->Tregint_start;
8294 PL_regint_string = proto_perl->Tregint_string;
8295 PL_regfree = proto_perl->Tregfree;
8297 PL_reginterp_cnt = 0;
8298 PL_reg_starttry = 0;
8301 return (PerlInterpreter*)pPerl;
8307 #else /* !USE_ITHREADS */
8313 #endif /* USE_ITHREADS */
8316 do_report_used(pTHXo_ SV *sv)
8318 if (SvTYPE(sv) != SVTYPEMASK) {
8319 PerlIO_printf(Perl_debug_log, "****\n");
8325 do_clean_objs(pTHXo_ SV *sv)
8329 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8330 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8331 if (SvWEAKREF(sv)) {
8342 /* XXX Might want to check arrays, etc. */
8345 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8347 do_clean_named_objs(pTHXo_ SV *sv)
8349 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8350 if ( SvOBJECT(GvSV(sv)) ||
8351 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8352 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8353 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8354 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8356 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8364 do_clean_all(pTHXo_ SV *sv)
8366 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8367 SvFLAGS(sv) |= SVf_BREAK;