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 (mt != SVt_PV && SvREADONLY(sv) && SvFAKE(sv)) {
920 if (SvTYPE(sv) == mt)
926 switch (SvTYPE(sv)) {
947 else if (mt < SVt_PVIV)
964 pv = (char*)SvRV(sv);
984 else if (mt == SVt_NV)
995 del_XPVIV(SvANY(sv));
1005 del_XPVNV(SvANY(sv));
1013 magic = SvMAGIC(sv);
1014 stash = SvSTASH(sv);
1015 del_XPVMG(SvANY(sv));
1018 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
1023 Perl_croak(aTHX_ "Can't upgrade to undef");
1025 SvANY(sv) = new_XIV();
1029 SvANY(sv) = new_XNV();
1033 SvANY(sv) = new_XRV();
1037 SvANY(sv) = new_XPV();
1043 SvANY(sv) = new_XPVIV();
1053 SvANY(sv) = new_XPVNV();
1061 SvANY(sv) = new_XPVMG();
1067 SvMAGIC(sv) = magic;
1068 SvSTASH(sv) = stash;
1071 SvANY(sv) = new_XPVLV();
1077 SvMAGIC(sv) = magic;
1078 SvSTASH(sv) = stash;
1085 SvANY(sv) = new_XPVAV();
1093 SvMAGIC(sv) = magic;
1094 SvSTASH(sv) = stash;
1100 SvANY(sv) = new_XPVHV();
1108 SvMAGIC(sv) = magic;
1109 SvSTASH(sv) = stash;
1116 SvANY(sv) = new_XPVCV();
1117 Zero(SvANY(sv), 1, XPVCV);
1123 SvMAGIC(sv) = magic;
1124 SvSTASH(sv) = stash;
1127 SvANY(sv) = new_XPVGV();
1133 SvMAGIC(sv) = magic;
1134 SvSTASH(sv) = stash;
1142 SvANY(sv) = new_XPVBM();
1148 SvMAGIC(sv) = magic;
1149 SvSTASH(sv) = stash;
1155 SvANY(sv) = new_XPVFM();
1156 Zero(SvANY(sv), 1, XPVFM);
1162 SvMAGIC(sv) = magic;
1163 SvSTASH(sv) = stash;
1166 SvANY(sv) = new_XPVIO();
1167 Zero(SvANY(sv), 1, XPVIO);
1173 SvMAGIC(sv) = magic;
1174 SvSTASH(sv) = stash;
1175 IoPAGE_LEN(sv) = 60;
1178 SvFLAGS(sv) &= ~SVTYPEMASK;
1184 Perl_sv_backoff(pTHX_ register SV *sv)
1188 char *s = SvPVX(sv);
1189 SvLEN(sv) += SvIVX(sv);
1190 SvPVX(sv) -= SvIVX(sv);
1192 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1194 SvFLAGS(sv) &= ~SVf_OOK;
1201 Expands the character buffer in the SV. This will use C<sv_unref> and will
1202 upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1209 Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
1213 #ifdef HAS_64K_LIMIT
1214 if (newlen >= 0x10000) {
1215 PerlIO_printf(Perl_debug_log,
1216 "Allocation too large: %"UVxf"\n", (UV)newlen);
1219 #endif /* HAS_64K_LIMIT */
1222 if (SvTYPE(sv) < SVt_PV) {
1223 sv_upgrade(sv, SVt_PV);
1226 else if (SvOOK(sv)) { /* pv is offset? */
1229 if (newlen > SvLEN(sv))
1230 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1231 #ifdef HAS_64K_LIMIT
1232 if (newlen >= 0x10000)
1238 if (newlen > SvLEN(sv)) { /* need more room? */
1239 if (SvLEN(sv) && s) {
1240 #if defined(MYMALLOC) && !defined(LEAKTEST)
1241 STRLEN l = malloced_size((void*)SvPVX(sv));
1247 Renew(s,newlen,char);
1250 New(703,s,newlen,char);
1252 SvLEN_set(sv, newlen);
1258 =for apidoc sv_setiv
1260 Copies an integer into the given SV. Does not handle 'set' magic. See
1267 Perl_sv_setiv(pTHX_ register SV *sv, IV i)
1269 SV_CHECK_THINKFIRST(sv);
1270 switch (SvTYPE(sv)) {
1272 sv_upgrade(sv, SVt_IV);
1275 sv_upgrade(sv, SVt_PVNV);
1279 sv_upgrade(sv, SVt_PVIV);
1290 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1291 PL_op_desc[PL_op->op_type]);
1294 (void)SvIOK_only(sv); /* validate number */
1300 =for apidoc sv_setiv_mg
1302 Like C<sv_setiv>, but also handles 'set' magic.
1308 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1315 =for apidoc sv_setuv
1317 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1324 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
1332 =for apidoc sv_setuv_mg
1334 Like C<sv_setuv>, but also handles 'set' magic.
1340 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1347 =for apidoc sv_setnv
1349 Copies a double into the given SV. Does not handle 'set' magic. See
1356 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1358 SV_CHECK_THINKFIRST(sv);
1359 switch (SvTYPE(sv)) {
1362 sv_upgrade(sv, SVt_NV);
1367 sv_upgrade(sv, SVt_PVNV);
1378 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1379 PL_op_name[PL_op->op_type]);
1383 (void)SvNOK_only(sv); /* validate number */
1388 =for apidoc sv_setnv_mg
1390 Like C<sv_setnv>, but also handles 'set' magic.
1396 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1403 S_not_a_number(pTHX_ SV *sv)
1409 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1410 /* each *s can expand to 4 chars + "...\0",
1411 i.e. need room for 8 chars */
1413 for (s = SvPVX(sv); *s && d < limit; s++) {
1415 if (ch & 128 && !isPRINT_LC(ch)) {
1424 else if (ch == '\r') {
1428 else if (ch == '\f') {
1432 else if (ch == '\\') {
1436 else if (isPRINT_LC(ch))
1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1453 PL_op_desc[PL_op->op_type]);
1455 Perl_warner(aTHX_ WARN_NUMERIC,
1456 "Argument \"%s\" isn't numeric", tmpbuf);
1459 /* the number can be converted to integer with atol() or atoll() */
1460 #define IS_NUMBER_TO_INT_BY_ATOL 0x01
1461 #define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1462 #define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1463 #define IS_NUMBER_NEG 0x08 /* not good to cache UV */
1464 #define IS_NUMBER_INFINITY 0x10 /* this is big */
1466 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1467 until proven guilty, assume that things are not that bad... */
1470 Perl_sv_2iv(pTHX_ register SV *sv)
1474 if (SvGMAGICAL(sv)) {
1479 return I_V(SvNVX(sv));
1481 if (SvPOKp(sv) && SvLEN(sv))
1484 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1486 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1492 if (SvTHINKFIRST(sv)) {
1495 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1496 (SvRV(tmpstr) != SvRV(sv)))
1497 return SvIV(tmpstr);
1498 return PTR2IV(SvRV(sv));
1500 if (SvREADONLY(sv) && !SvOK(sv)) {
1502 if (ckWARN(WARN_UNINITIALIZED))
1509 return (IV)(SvUVX(sv));
1516 /* We can cache the IV/UV value even if it not good enough
1517 * to reconstruct NV, since the conversion to PV will prefer
1521 if (SvTYPE(sv) == SVt_NV)
1522 sv_upgrade(sv, SVt_PVNV);
1525 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1526 SvIVX(sv) = I_V(SvNVX(sv));
1528 SvUVX(sv) = U_V(SvNVX(sv));
1531 DEBUG_c(PerlIO_printf(Perl_debug_log,
1532 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1536 return (IV)SvUVX(sv);
1539 else if (SvPOKp(sv) && SvLEN(sv)) {
1540 I32 numtype = looks_like_number(sv);
1542 /* We want to avoid a possible problem when we cache an IV which
1543 may be later translated to an NV, and the resulting NV is not
1544 the translation of the initial data.
1546 This means that if we cache such an IV, we need to cache the
1547 NV as well. Moreover, we trade speed for space, and do not
1548 cache the NV if not needed.
1550 if (numtype & IS_NUMBER_NOT_IV) {
1551 /* May be not an integer. Need to cache NV if we cache IV
1552 * - otherwise future conversion to NV will be wrong. */
1555 d = Atof(SvPVX(sv));
1557 if (SvTYPE(sv) < SVt_PVNV)
1558 sv_upgrade(sv, SVt_PVNV);
1562 #if defined(USE_LONG_DOUBLE)
1563 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1564 PTR2UV(sv), SvNVX(sv)));
1566 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1567 PTR2UV(sv), SvNVX(sv)));
1569 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1570 SvIVX(sv) = I_V(SvNVX(sv));
1572 SvUVX(sv) = U_V(SvNVX(sv));
1577 else { /* The NV may be reconstructed from IV - safe to cache IV,
1578 which may be calculated by atol(). */
1579 if (SvTYPE(sv) < SVt_PVIV)
1580 sv_upgrade(sv, SVt_PVIV);
1582 SvIVX(sv) = Atol(SvPVX(sv));
1583 if (! numtype && ckWARN(WARN_NUMERIC))
1589 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1591 if (SvTYPE(sv) < SVt_IV)
1592 /* Typically the caller expects that sv_any is not NULL now. */
1593 sv_upgrade(sv, SVt_IV);
1596 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1597 PTR2UV(sv),SvIVX(sv)));
1598 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1602 Perl_sv_2uv(pTHX_ register SV *sv)
1606 if (SvGMAGICAL(sv)) {
1611 return U_V(SvNVX(sv));
1612 if (SvPOKp(sv) && SvLEN(sv))
1615 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1617 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1623 if (SvTHINKFIRST(sv)) {
1626 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1627 (SvRV(tmpstr) != SvRV(sv)))
1628 return SvUV(tmpstr);
1629 return PTR2UV(SvRV(sv));
1631 if (SvREADONLY(sv) && !SvOK(sv)) {
1633 if (ckWARN(WARN_UNINITIALIZED))
1643 return (UV)SvIVX(sv);
1647 /* We can cache the IV/UV value even if it not good enough
1648 * to reconstruct NV, since the conversion to PV will prefer
1651 if (SvTYPE(sv) == SVt_NV)
1652 sv_upgrade(sv, SVt_PVNV);
1654 if (SvNVX(sv) >= -0.5) {
1656 SvUVX(sv) = U_V(SvNVX(sv));
1659 SvIVX(sv) = I_V(SvNVX(sv));
1661 DEBUG_c(PerlIO_printf(Perl_debug_log,
1662 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1665 (IV)(UV)SvIVX(sv)));
1666 return (UV)SvIVX(sv);
1669 else if (SvPOKp(sv) && SvLEN(sv)) {
1670 I32 numtype = looks_like_number(sv);
1672 /* We want to avoid a possible problem when we cache a UV which
1673 may be later translated to an NV, and the resulting NV is not
1674 the translation of the initial data.
1676 This means that if we cache such a UV, we need to cache the
1677 NV as well. Moreover, we trade speed for space, and do not
1678 cache the NV if not needed.
1680 if (numtype & IS_NUMBER_NOT_IV) {
1681 /* May be not an integer. Need to cache NV if we cache IV
1682 * - otherwise future conversion to NV will be wrong. */
1685 d = Atof(SvPVX(sv));
1687 if (SvTYPE(sv) < SVt_PVNV)
1688 sv_upgrade(sv, SVt_PVNV);
1692 #if defined(USE_LONG_DOUBLE)
1693 DEBUG_c(PerlIO_printf(Perl_debug_log,
1694 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1695 PTR2UV(sv), SvNVX(sv)));
1697 DEBUG_c(PerlIO_printf(Perl_debug_log,
1698 "0x%"UVxf" 2nv(%g)\n",
1699 PTR2UV(sv), SvNVX(sv)));
1701 if (SvNVX(sv) < -0.5) {
1702 SvIVX(sv) = I_V(SvNVX(sv));
1705 SvUVX(sv) = U_V(SvNVX(sv));
1709 else if (numtype & IS_NUMBER_NEG) {
1710 /* The NV may be reconstructed from IV - safe to cache IV,
1711 which may be calculated by atol(). */
1712 if (SvTYPE(sv) == SVt_PV)
1713 sv_upgrade(sv, SVt_PVIV);
1715 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1717 else if (numtype) { /* Non-negative */
1718 /* The NV may be reconstructed from UV - safe to cache UV,
1719 which may be calculated by strtoul()/atol. */
1720 if (SvTYPE(sv) == SVt_PV)
1721 sv_upgrade(sv, SVt_PVIV);
1723 (void)SvIsUV_on(sv);
1725 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1726 #else /* no atou(), but we know the number fits into IV... */
1727 /* The only problem may be if it is negative... */
1728 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1731 else { /* Not a number. Cache 0. */
1734 if (SvTYPE(sv) < SVt_PVIV)
1735 sv_upgrade(sv, SVt_PVIV);
1737 (void)SvIsUV_on(sv);
1738 SvUVX(sv) = 0; /* We assume that 0s have the
1739 same bitmap in IV and UV. */
1740 if (ckWARN(WARN_NUMERIC))
1745 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1747 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1750 if (SvTYPE(sv) < SVt_IV)
1751 /* Typically the caller expects that sv_any is not NULL now. */
1752 sv_upgrade(sv, SVt_IV);
1756 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1757 PTR2UV(sv),SvUVX(sv)));
1758 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1762 Perl_sv_2nv(pTHX_ register SV *sv)
1766 if (SvGMAGICAL(sv)) {
1770 if (SvPOKp(sv) && SvLEN(sv)) {
1772 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1774 return Atof(SvPVX(sv));
1778 return (NV)SvUVX(sv);
1780 return (NV)SvIVX(sv);
1783 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1785 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1791 if (SvTHINKFIRST(sv)) {
1794 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1795 (SvRV(tmpstr) != SvRV(sv)))
1796 return SvNV(tmpstr);
1797 return PTR2NV(SvRV(sv));
1799 if (SvREADONLY(sv) && !SvOK(sv)) {
1801 if (ckWARN(WARN_UNINITIALIZED))
1806 if (SvTYPE(sv) < SVt_NV) {
1807 if (SvTYPE(sv) == SVt_IV)
1808 sv_upgrade(sv, SVt_PVNV);
1810 sv_upgrade(sv, SVt_NV);
1811 #if defined(USE_LONG_DOUBLE)
1813 STORE_NUMERIC_LOCAL_SET_STANDARD();
1814 PerlIO_printf(Perl_debug_log,
1815 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1816 PTR2UV(sv), SvNVX(sv));
1817 RESTORE_NUMERIC_LOCAL();
1821 STORE_NUMERIC_LOCAL_SET_STANDARD();
1822 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1823 PTR2UV(sv), SvNVX(sv));
1824 RESTORE_NUMERIC_LOCAL();
1828 else if (SvTYPE(sv) < SVt_PVNV)
1829 sv_upgrade(sv, SVt_PVNV);
1831 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1833 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1835 else if (SvPOKp(sv) && SvLEN(sv)) {
1837 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1839 SvNVX(sv) = Atof(SvPVX(sv));
1843 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1845 if (SvTYPE(sv) < SVt_NV)
1846 /* Typically the caller expects that sv_any is not NULL now. */
1847 sv_upgrade(sv, SVt_NV);
1851 #if defined(USE_LONG_DOUBLE)
1853 STORE_NUMERIC_LOCAL_SET_STANDARD();
1854 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1855 PTR2UV(sv), SvNVX(sv));
1856 RESTORE_NUMERIC_LOCAL();
1860 STORE_NUMERIC_LOCAL_SET_STANDARD();
1861 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1862 PTR2UV(sv), SvNVX(sv));
1863 RESTORE_NUMERIC_LOCAL();
1870 S_asIV(pTHX_ SV *sv)
1872 I32 numtype = looks_like_number(sv);
1875 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1876 return Atol(SvPVX(sv));
1879 if (ckWARN(WARN_NUMERIC))
1882 d = Atof(SvPVX(sv));
1887 S_asUV(pTHX_ SV *sv)
1889 I32 numtype = looks_like_number(sv);
1892 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1893 return Strtoul(SvPVX(sv), Null(char**), 10);
1897 if (ckWARN(WARN_NUMERIC))
1900 return U_V(Atof(SvPVX(sv)));
1904 * Returns a combination of (advisory only - can get false negatives)
1905 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1907 * 0 if does not look like number.
1909 * In fact possible values are 0 and
1910 * IS_NUMBER_TO_INT_BY_ATOL 123
1911 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1912 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1913 * IS_NUMBER_INFINITY
1914 * with a possible addition of IS_NUMBER_NEG.
1918 =for apidoc looks_like_number
1920 Test if an the content of an SV looks like a number (or is a
1927 Perl_looks_like_number(pTHX_ SV *sv)
1930 register char *send;
1931 register char *sbegin;
1932 register char *nbegin;
1941 else if (SvPOKp(sv))
1942 sbegin = SvPV(sv, len);
1945 send = sbegin + len;
1952 numtype = IS_NUMBER_NEG;
1959 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1960 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1964 /* next must be digit or the radix separator or beginning of infinity */
1968 } while (isDIGIT(*s));
1970 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1971 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1973 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1976 #ifdef USE_LOCALE_NUMERIC
1977 || IS_NUMERIC_RADIX(*s)
1981 numtype |= IS_NUMBER_NOT_IV;
1982 while (isDIGIT(*s)) /* optional digits after the radix */
1987 #ifdef USE_LOCALE_NUMERIC
1988 || IS_NUMERIC_RADIX(*s)
1992 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1993 /* no digits before the radix means we need digits after it */
1997 } while (isDIGIT(*s));
2002 else if (*s == 'I' || *s == 'i') {
2003 s++; if (*s != 'N' && *s != 'n') return 0;
2004 s++; if (*s != 'F' && *s != 'f') return 0;
2005 s++; if (*s == 'I' || *s == 'i') {
2006 s++; if (*s != 'N' && *s != 'n') return 0;
2007 s++; if (*s != 'I' && *s != 'i') return 0;
2008 s++; if (*s != 'T' && *s != 't') return 0;
2009 s++; if (*s != 'Y' && *s != 'y') return 0;
2017 numtype = IS_NUMBER_INFINITY;
2019 /* we can have an optional exponent part */
2020 if (*s == 'e' || *s == 'E') {
2021 numtype &= ~IS_NUMBER_NEG;
2022 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2024 if (*s == '+' || *s == '-')
2029 } while (isDIGIT(*s));
2039 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2040 return IS_NUMBER_TO_INT_BY_ATOL;
2045 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2048 return sv_2pv(sv, &n_a);
2051 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2053 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2055 char *ptr = buf + TYPE_CHARS(UV);
2069 *--ptr = '0' + (uv % 10);
2078 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2083 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2084 char *tmpbuf = tbuf;
2090 if (SvGMAGICAL(sv)) {
2098 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2100 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2105 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2110 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2112 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2119 if (SvTHINKFIRST(sv)) {
2122 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2123 (SvRV(tmpstr) != SvRV(sv)))
2124 return SvPV(tmpstr,*lp);
2131 switch (SvTYPE(sv)) {
2133 if ( ((SvFLAGS(sv) &
2134 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2135 == (SVs_OBJECT|SVs_RMG))
2136 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2137 && (mg = mg_find(sv, 'r'))) {
2139 regexp *re = (regexp *)mg->mg_obj;
2142 char *fptr = "msix";
2147 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2149 while((ch = *fptr++)) {
2151 reflags[left++] = ch;
2154 reflags[right--] = ch;
2159 reflags[left] = '-';
2163 mg->mg_len = re->prelen + 4 + left;
2164 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2165 Copy("(?", mg->mg_ptr, 2, char);
2166 Copy(reflags, mg->mg_ptr+2, left, char);
2167 Copy(":", mg->mg_ptr+left+2, 1, char);
2168 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2169 mg->mg_ptr[mg->mg_len - 1] = ')';
2170 mg->mg_ptr[mg->mg_len] = 0;
2172 PL_reginterp_cnt += re->program[0].next_off;
2184 case SVt_PVBM: if (SvROK(sv))
2187 s = "SCALAR"; break;
2188 case SVt_PVLV: s = "LVALUE"; break;
2189 case SVt_PVAV: s = "ARRAY"; break;
2190 case SVt_PVHV: s = "HASH"; break;
2191 case SVt_PVCV: s = "CODE"; break;
2192 case SVt_PVGV: s = "GLOB"; break;
2193 case SVt_PVFM: s = "FORMAT"; break;
2194 case SVt_PVIO: s = "IO"; break;
2195 default: s = "UNKNOWN"; break;
2199 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2202 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2208 if (SvREADONLY(sv) && !SvOK(sv)) {
2210 if (ckWARN(WARN_UNINITIALIZED))
2216 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2217 /* XXXX 64-bit? IV may have better precision... */
2218 /* I tried changing this to be 64-bit-aware and
2219 * the t/op/numconvert.t became very, very, angry.
2221 if (SvTYPE(sv) < SVt_PVNV)
2222 sv_upgrade(sv, SVt_PVNV);
2223 /* The +20 is pure guesswork. Configure test needed. --jhi */
2224 SvGROW(sv, NV_DIG + 20);
2226 olderrno = errno; /* some Xenix systems wipe out errno here */
2228 if (SvNVX(sv) == 0.0)
2229 (void)strcpy(s,"0");
2233 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2236 #ifdef FIXNEGATIVEZERO
2237 if (*s == '-' && s[1] == '0' && !s[2])
2246 else if (SvIOKp(sv)) {
2247 U32 isIOK = SvIOK(sv);
2248 U32 isUIOK = SvIsUV(sv);
2249 char buf[TYPE_CHARS(UV)];
2252 if (SvTYPE(sv) < SVt_PVIV)
2253 sv_upgrade(sv, SVt_PVIV);
2255 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2257 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2258 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2259 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2260 SvCUR_set(sv, ebuf - ptr);
2273 if (ckWARN(WARN_UNINITIALIZED)
2274 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2279 if (SvTYPE(sv) < SVt_PV)
2280 /* Typically the caller expects that sv_any is not NULL now. */
2281 sv_upgrade(sv, SVt_PV);
2284 *lp = s - SvPVX(sv);
2287 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2288 PTR2UV(sv),SvPVX(sv)));
2292 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2293 /* Sneaky stuff here */
2297 tsv = newSVpv(tmpbuf, 0);
2313 len = strlen(tmpbuf);
2315 #ifdef FIXNEGATIVEZERO
2316 if (len == 2 && t[0] == '-' && t[1] == '0') {
2321 (void)SvUPGRADE(sv, SVt_PV);
2323 s = SvGROW(sv, len + 1);
2332 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2335 return sv_2pvbyte(sv, &n_a);
2339 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2341 return sv_2pv(sv,lp);
2345 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2348 return sv_2pvutf8(sv, &n_a);
2352 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2354 sv_utf8_upgrade(sv);
2355 return sv_2pv(sv,lp);
2358 /* This function is only called on magical items */
2360 Perl_sv_2bool(pTHX_ register SV *sv)
2370 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2371 (SvRV(tmpsv) != SvRV(sv)))
2372 return SvTRUE(tmpsv);
2373 return SvRV(sv) != 0;
2376 register XPV* Xpvtmp;
2377 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2378 (*Xpvtmp->xpv_pv > '0' ||
2379 Xpvtmp->xpv_cur > 1 ||
2380 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2387 return SvIVX(sv) != 0;
2390 return SvNVX(sv) != 0.0;
2398 =for apidoc sv_utf8_upgrade
2400 Convert the PV of an SV to its UTF8-encoded form.
2406 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2411 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2414 /* This function could be much more efficient if we had a FLAG in SVs
2415 * to signal if there are any hibit chars in the PV.
2417 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2422 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2423 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2424 SvCUR(sv) = len - 1;
2425 SvLEN(sv) = len; /* No longer know the real size. */
2427 Safefree(s); /* No longer using what was there before. */
2432 =for apidoc sv_utf8_downgrade
2434 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2435 This may not be possible if the PV contains non-byte encoding characters;
2436 if this is the case, either returns false or, if C<fail_ok> is not
2443 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2445 if (SvPOK(sv) && SvUTF8(sv)) {
2446 char *c = SvPVX(sv);
2447 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
2448 if (!utf8_to_bytes((U8*)c, &len)) {
2453 Perl_croak(aTHX_ "Wide character in %s",
2454 PL_op_desc[PL_op->op_type]);
2456 Perl_croak(aTHX_ "Wide character");
2459 SvCUR(sv) = len - 1;
2466 =for apidoc sv_utf8_encode
2468 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2469 flag so that it looks like bytes again. Nothing calls this.
2475 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2477 sv_utf8_upgrade(sv);
2482 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2486 bool has_utf = FALSE;
2487 if (!sv_utf8_downgrade(sv, TRUE))
2490 /* it is actually just a matter of turning the utf8 flag on, but
2491 * we want to make sure everything inside is valid utf8 first.
2494 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2497 while (c < SvEND(sv)) {
2508 /* Note: sv_setsv() should not be called with a source string that needs
2509 * to be reused, since it may destroy the source string if it is marked
2514 =for apidoc sv_setsv
2516 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2517 The source SV may be destroyed if it is mortal. Does not handle 'set'
2518 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2525 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2528 register U32 sflags;
2534 SV_CHECK_THINKFIRST(dstr);
2536 sstr = &PL_sv_undef;
2537 stype = SvTYPE(sstr);
2538 dtype = SvTYPE(dstr);
2542 /* There's a lot of redundancy below but we're going for speed here */
2547 if (dtype != SVt_PVGV) {
2548 (void)SvOK_off(dstr);
2556 sv_upgrade(dstr, SVt_IV);
2559 sv_upgrade(dstr, SVt_PVNV);
2563 sv_upgrade(dstr, SVt_PVIV);
2566 (void)SvIOK_only(dstr);
2567 SvIVX(dstr) = SvIVX(sstr);
2580 sv_upgrade(dstr, SVt_NV);
2585 sv_upgrade(dstr, SVt_PVNV);
2588 SvNVX(dstr) = SvNVX(sstr);
2589 (void)SvNOK_only(dstr);
2597 sv_upgrade(dstr, SVt_RV);
2598 else if (dtype == SVt_PVGV &&
2599 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2602 if (GvIMPORTED(dstr) != GVf_IMPORTED
2603 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2605 GvIMPORTED_on(dstr);
2616 sv_upgrade(dstr, SVt_PV);
2619 if (dtype < SVt_PVIV)
2620 sv_upgrade(dstr, SVt_PVIV);
2623 if (dtype < SVt_PVNV)
2624 sv_upgrade(dstr, SVt_PVNV);
2631 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2632 PL_op_name[PL_op->op_type]);
2634 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2638 if (dtype <= SVt_PVGV) {
2640 if (dtype != SVt_PVGV) {
2641 char *name = GvNAME(sstr);
2642 STRLEN len = GvNAMELEN(sstr);
2643 sv_upgrade(dstr, SVt_PVGV);
2644 sv_magic(dstr, dstr, '*', Nullch, 0);
2645 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2646 GvNAME(dstr) = savepvn(name, len);
2647 GvNAMELEN(dstr) = len;
2648 SvFAKE_on(dstr); /* can coerce to non-glob */
2650 /* ahem, death to those who redefine active sort subs */
2651 else if (PL_curstackinfo->si_type == PERLSI_SORT
2652 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2653 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2655 (void)SvOK_off(dstr);
2656 GvINTRO_off(dstr); /* one-shot flag */
2658 GvGP(dstr) = gp_ref(GvGP(sstr));
2660 if (GvIMPORTED(dstr) != GVf_IMPORTED
2661 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2663 GvIMPORTED_on(dstr);
2671 if (SvGMAGICAL(sstr)) {
2673 if (SvTYPE(sstr) != stype) {
2674 stype = SvTYPE(sstr);
2675 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2679 if (stype == SVt_PVLV)
2680 (void)SvUPGRADE(dstr, SVt_PVNV);
2682 (void)SvUPGRADE(dstr, stype);
2685 sflags = SvFLAGS(sstr);
2687 if (sflags & SVf_ROK) {
2688 if (dtype >= SVt_PV) {
2689 if (dtype == SVt_PVGV) {
2690 SV *sref = SvREFCNT_inc(SvRV(sstr));
2692 int intro = GvINTRO(dstr);
2697 GvINTRO_off(dstr); /* one-shot flag */
2698 Newz(602,gp, 1, GP);
2699 GvGP(dstr) = gp_ref(gp);
2700 GvSV(dstr) = NEWSV(72,0);
2701 GvLINE(dstr) = CopLINE(PL_curcop);
2702 GvEGV(dstr) = (GV*)dstr;
2705 switch (SvTYPE(sref)) {
2708 SAVESPTR(GvAV(dstr));
2710 dref = (SV*)GvAV(dstr);
2711 GvAV(dstr) = (AV*)sref;
2712 if (!GvIMPORTED_AV(dstr)
2713 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2715 GvIMPORTED_AV_on(dstr);
2720 SAVESPTR(GvHV(dstr));
2722 dref = (SV*)GvHV(dstr);
2723 GvHV(dstr) = (HV*)sref;
2724 if (!GvIMPORTED_HV(dstr)
2725 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2727 GvIMPORTED_HV_on(dstr);
2732 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2733 SvREFCNT_dec(GvCV(dstr));
2734 GvCV(dstr) = Nullcv;
2735 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2736 PL_sub_generation++;
2738 SAVESPTR(GvCV(dstr));
2741 dref = (SV*)GvCV(dstr);
2742 if (GvCV(dstr) != (CV*)sref) {
2743 CV* cv = GvCV(dstr);
2745 if (!GvCVGEN((GV*)dstr) &&
2746 (CvROOT(cv) || CvXSUB(cv)))
2748 SV *const_sv = cv_const_sv(cv);
2749 bool const_changed = TRUE;
2751 const_changed = sv_cmp(const_sv,
2752 op_const_sv(CvSTART((CV*)sref),
2754 /* ahem, death to those who redefine
2755 * active sort subs */
2756 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2757 PL_sortcop == CvSTART(cv))
2759 "Can't redefine active sort subroutine %s",
2760 GvENAME((GV*)dstr));
2761 if ((const_changed && const_sv) || ckWARN(WARN_REDEFINE))
2762 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
2763 "Constant subroutine %s redefined"
2764 : "Subroutine %s redefined",
2765 GvENAME((GV*)dstr));
2767 cv_ckproto(cv, (GV*)dstr,
2768 SvPOK(sref) ? SvPVX(sref) : Nullch);
2770 GvCV(dstr) = (CV*)sref;
2771 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2772 GvASSUMECV_on(dstr);
2773 PL_sub_generation++;
2775 if (!GvIMPORTED_CV(dstr)
2776 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2778 GvIMPORTED_CV_on(dstr);
2783 SAVESPTR(GvIOp(dstr));
2785 dref = (SV*)GvIOp(dstr);
2786 GvIOp(dstr) = (IO*)sref;
2790 SAVESPTR(GvFORM(dstr));
2792 dref = (SV*)GvFORM(dstr);
2793 GvFORM(dstr) = (CV*)sref;
2797 SAVESPTR(GvSV(dstr));
2799 dref = (SV*)GvSV(dstr);
2801 if (!GvIMPORTED_SV(dstr)
2802 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2804 GvIMPORTED_SV_on(dstr);
2816 (void)SvOOK_off(dstr); /* backoff */
2818 Safefree(SvPVX(dstr));
2819 SvLEN(dstr)=SvCUR(dstr)=0;
2822 (void)SvOK_off(dstr);
2823 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2825 if (sflags & SVp_NOK) {
2827 SvNVX(dstr) = SvNVX(sstr);
2829 if (sflags & SVp_IOK) {
2830 (void)SvIOK_on(dstr);
2831 SvIVX(dstr) = SvIVX(sstr);
2832 if (sflags & SVf_IVisUV)
2835 if (SvAMAGIC(sstr)) {
2839 else if (sflags & SVp_POK) {
2842 * Check to see if we can just swipe the string. If so, it's a
2843 * possible small lose on short strings, but a big win on long ones.
2844 * It might even be a win on short strings if SvPVX(dstr)
2845 * has to be allocated and SvPVX(sstr) has to be freed.
2848 if (SvTEMP(sstr) && /* slated for free anyway? */
2849 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2850 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2851 SvLEN(sstr)) /* and really is a string */
2853 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2855 SvFLAGS(dstr) &= ~SVf_OOK;
2856 Safefree(SvPVX(dstr) - SvIVX(dstr));
2858 else if (SvLEN(dstr))
2859 Safefree(SvPVX(dstr));
2861 (void)SvPOK_only(dstr);
2862 SvPV_set(dstr, SvPVX(sstr));
2863 SvLEN_set(dstr, SvLEN(sstr));
2864 SvCUR_set(dstr, SvCUR(sstr));
2867 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2868 SvPV_set(sstr, Nullch);
2873 else { /* have to copy actual string */
2874 STRLEN len = SvCUR(sstr);
2876 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2877 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2878 SvCUR_set(dstr, len);
2879 *SvEND(dstr) = '\0';
2880 (void)SvPOK_only(dstr);
2882 if ((sflags & SVf_UTF8) && !IN_BYTE)
2885 if (sflags & SVp_NOK) {
2887 SvNVX(dstr) = SvNVX(sstr);
2889 if (sflags & SVp_IOK) {
2890 (void)SvIOK_on(dstr);
2891 SvIVX(dstr) = SvIVX(sstr);
2892 if (sflags & SVf_IVisUV)
2896 else if (sflags & SVp_NOK) {
2897 SvNVX(dstr) = SvNVX(sstr);
2898 (void)SvNOK_only(dstr);
2899 if (sflags & SVf_IOK) {
2900 (void)SvIOK_on(dstr);
2901 SvIVX(dstr) = SvIVX(sstr);
2902 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2903 if (sflags & SVf_IVisUV)
2907 else if (sflags & SVp_IOK) {
2908 (void)SvIOK_only(dstr);
2909 SvIVX(dstr) = SvIVX(sstr);
2910 if (sflags & SVf_IVisUV)
2914 if (dtype == SVt_PVGV) {
2915 if (ckWARN(WARN_MISC))
2916 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2919 (void)SvOK_off(dstr);
2925 =for apidoc sv_setsv_mg
2927 Like C<sv_setsv>, but also handles 'set' magic.
2933 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2935 sv_setsv(dstr,sstr);
2940 =for apidoc sv_setpvn
2942 Copies a string into an SV. The C<len> parameter indicates the number of
2943 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2949 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2951 register char *dptr;
2952 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2953 elicit a warning, but it won't hurt. */
2954 SV_CHECK_THINKFIRST(sv);
2959 (void)SvUPGRADE(sv, SVt_PV);
2961 SvGROW(sv, len + 1);
2963 Move(ptr,dptr,len,char);
2966 (void)SvPOK_only(sv); /* validate pointer */
2971 =for apidoc sv_setpvn_mg
2973 Like C<sv_setpvn>, but also handles 'set' magic.
2979 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2981 sv_setpvn(sv,ptr,len);
2986 =for apidoc sv_setpv
2988 Copies a string into an SV. The string must be null-terminated. Does not
2989 handle 'set' magic. See C<sv_setpv_mg>.
2995 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
2997 register STRLEN len;
2999 SV_CHECK_THINKFIRST(sv);
3005 (void)SvUPGRADE(sv, SVt_PV);
3007 SvGROW(sv, len + 1);
3008 Move(ptr,SvPVX(sv),len+1,char);
3010 (void)SvPOK_only(sv); /* validate pointer */
3015 =for apidoc sv_setpv_mg
3017 Like C<sv_setpv>, but also handles 'set' magic.
3023 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3030 =for apidoc sv_usepvn
3032 Tells an SV to use C<ptr> to find its string value. Normally the string is
3033 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3034 The C<ptr> should point to memory that was allocated by C<malloc>. The
3035 string length, C<len>, must be supplied. This function will realloc the
3036 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3037 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3038 See C<sv_usepvn_mg>.
3044 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3046 SV_CHECK_THINKFIRST(sv);
3047 (void)SvUPGRADE(sv, SVt_PV);
3052 (void)SvOOK_off(sv);
3053 if (SvPVX(sv) && SvLEN(sv))
3054 Safefree(SvPVX(sv));
3055 Renew(ptr, len+1, char);
3058 SvLEN_set(sv, len+1);
3060 (void)SvPOK_only(sv); /* validate pointer */
3065 =for apidoc sv_usepvn_mg
3067 Like C<sv_usepvn>, but also handles 'set' magic.
3073 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3075 sv_usepvn(sv,ptr,len);
3080 Perl_sv_force_normal(pTHX_ register SV *sv)
3082 if (SvREADONLY(sv)) {
3085 char *pvx = SvPVX(sv);
3086 STRLEN len = SvCUR(sv);
3087 U32 hash = SvUVX(sv);
3088 SvGROW(sv, len + 1);
3089 Move(pvx,SvPVX(sv),len,char);
3093 unsharepvn(pvx,len,hash);
3095 else if (PL_curcop != &PL_compiling)
3096 Perl_croak(aTHX_ PL_no_modify);
3100 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3107 Efficient removal of characters from the beginning of the string buffer.
3108 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3109 the string buffer. The C<ptr> becomes the first character of the adjusted
3116 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3120 register STRLEN delta;
3122 if (!ptr || !SvPOKp(sv))
3124 SV_CHECK_THINKFIRST(sv);
3125 if (SvTYPE(sv) < SVt_PVIV)
3126 sv_upgrade(sv,SVt_PVIV);
3129 if (!SvLEN(sv)) { /* make copy of shared string */
3130 char *pvx = SvPVX(sv);
3131 STRLEN len = SvCUR(sv);
3132 SvGROW(sv, len + 1);
3133 Move(pvx,SvPVX(sv),len,char);
3137 SvFLAGS(sv) |= SVf_OOK;
3139 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3140 delta = ptr - SvPVX(sv);
3148 =for apidoc sv_catpvn
3150 Concatenates the string onto the end of the string which is in the SV. The
3151 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3152 'set' magic. See C<sv_catpvn_mg>.
3158 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3163 junk = SvPV_force(sv, tlen);
3164 SvGROW(sv, tlen + len + 1);
3167 Move(ptr,SvPVX(sv)+tlen,len,char);
3170 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3175 =for apidoc sv_catpvn_mg
3177 Like C<sv_catpvn>, but also handles 'set' magic.
3183 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3185 sv_catpvn(sv,ptr,len);
3190 =for apidoc sv_catsv
3192 Concatenates the string from SV C<ssv> onto the end of the string in SV
3193 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3199 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3205 if ((s = SvPV(sstr, len))) {
3206 if (DO_UTF8(sstr)) {
3207 sv_utf8_upgrade(dstr);
3208 sv_catpvn(dstr,s,len);
3212 sv_catpvn(dstr,s,len);
3217 =for apidoc sv_catsv_mg
3219 Like C<sv_catsv>, but also handles 'set' magic.
3225 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3227 sv_catsv(dstr,sstr);
3232 =for apidoc sv_catpv
3234 Concatenates the string onto the end of the string which is in the SV.
3235 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3241 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3243 register STRLEN len;
3249 junk = SvPV_force(sv, tlen);
3251 SvGROW(sv, tlen + len + 1);
3254 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3256 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3261 =for apidoc sv_catpv_mg
3263 Like C<sv_catpv>, but also handles 'set' magic.
3269 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3276 Perl_newSV(pTHX_ STRLEN len)
3282 sv_upgrade(sv, SVt_PV);
3283 SvGROW(sv, len + 1);
3288 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3291 =for apidoc sv_magic
3293 Adds magic to an SV.
3299 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3303 if (SvREADONLY(sv)) {
3305 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3306 Perl_croak(aTHX_ PL_no_modify);
3308 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3309 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3316 (void)SvUPGRADE(sv, SVt_PVMG);
3318 Newz(702,mg, 1, MAGIC);
3319 mg->mg_moremagic = SvMAGIC(sv);
3322 if (!obj || obj == sv || how == '#' || how == 'r')
3326 mg->mg_obj = SvREFCNT_inc(obj);
3327 mg->mg_flags |= MGf_REFCOUNTED;
3330 mg->mg_len = namlen;
3333 mg->mg_ptr = savepvn(name, namlen);
3334 else if (namlen == HEf_SVKEY)
3335 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3339 mg->mg_virtual = &PL_vtbl_sv;
3342 mg->mg_virtual = &PL_vtbl_amagic;
3345 mg->mg_virtual = &PL_vtbl_amagicelem;
3351 mg->mg_virtual = &PL_vtbl_bm;
3354 mg->mg_virtual = &PL_vtbl_regdata;
3357 mg->mg_virtual = &PL_vtbl_regdatum;
3360 mg->mg_virtual = &PL_vtbl_env;
3363 mg->mg_virtual = &PL_vtbl_fm;
3366 mg->mg_virtual = &PL_vtbl_envelem;
3369 mg->mg_virtual = &PL_vtbl_mglob;
3372 mg->mg_virtual = &PL_vtbl_isa;
3375 mg->mg_virtual = &PL_vtbl_isaelem;
3378 mg->mg_virtual = &PL_vtbl_nkeys;
3385 mg->mg_virtual = &PL_vtbl_dbline;
3389 mg->mg_virtual = &PL_vtbl_mutex;
3391 #endif /* USE_THREADS */
3392 #ifdef USE_LOCALE_COLLATE
3394 mg->mg_virtual = &PL_vtbl_collxfrm;
3396 #endif /* USE_LOCALE_COLLATE */
3398 mg->mg_virtual = &PL_vtbl_pack;
3402 mg->mg_virtual = &PL_vtbl_packelem;
3405 mg->mg_virtual = &PL_vtbl_regexp;
3408 mg->mg_virtual = &PL_vtbl_sig;
3411 mg->mg_virtual = &PL_vtbl_sigelem;
3414 mg->mg_virtual = &PL_vtbl_taint;
3418 mg->mg_virtual = &PL_vtbl_uvar;
3421 mg->mg_virtual = &PL_vtbl_vec;
3424 mg->mg_virtual = &PL_vtbl_substr;
3427 mg->mg_virtual = &PL_vtbl_defelem;
3430 mg->mg_virtual = &PL_vtbl_glob;
3433 mg->mg_virtual = &PL_vtbl_arylen;
3436 mg->mg_virtual = &PL_vtbl_pos;
3439 mg->mg_virtual = &PL_vtbl_backref;
3441 case '~': /* Reserved for use by extensions not perl internals. */
3442 /* Useful for attaching extension internal data to perl vars. */
3443 /* Note that multiple extensions may clash if magical scalars */
3444 /* etc holding private data from one are passed to another. */
3448 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3452 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3456 =for apidoc sv_unmagic
3458 Removes magic from an SV.
3464 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3468 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3471 for (mg = *mgp; mg; mg = *mgp) {
3472 if (mg->mg_type == type) {
3473 MGVTBL* vtbl = mg->mg_virtual;
3474 *mgp = mg->mg_moremagic;
3475 if (vtbl && vtbl->svt_free)
3476 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3477 if (mg->mg_ptr && mg->mg_type != 'g')
3478 if (mg->mg_len >= 0)
3479 Safefree(mg->mg_ptr);
3480 else if (mg->mg_len == HEf_SVKEY)
3481 SvREFCNT_dec((SV*)mg->mg_ptr);
3482 if (mg->mg_flags & MGf_REFCOUNTED)
3483 SvREFCNT_dec(mg->mg_obj);
3487 mgp = &mg->mg_moremagic;
3491 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3498 =for apidoc sv_rvweaken
3506 Perl_sv_rvweaken(pTHX_ SV *sv)
3509 if (!SvOK(sv)) /* let undefs pass */
3512 Perl_croak(aTHX_ "Can't weaken a nonreference");
3513 else if (SvWEAKREF(sv)) {
3515 if (ckWARN(WARN_MISC))
3516 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3520 sv_add_backref(tsv, sv);
3527 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3531 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3532 av = (AV*)mg->mg_obj;
3535 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3536 SvREFCNT_dec(av); /* for sv_magic */
3542 S_sv_del_backref(pTHX_ SV *sv)
3549 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3550 Perl_croak(aTHX_ "panic: del_backref");
3551 av = (AV *)mg->mg_obj;
3556 svp[i] = &PL_sv_undef; /* XXX */
3563 =for apidoc sv_insert
3565 Inserts a string at the specified offset/length within the SV. Similar to
3566 the Perl substr() function.
3572 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3576 register char *midend;
3577 register char *bigend;
3583 Perl_croak(aTHX_ "Can't modify non-existent substring");
3584 SvPV_force(bigstr, curlen);
3585 (void)SvPOK_only_UTF8(bigstr);
3586 if (offset + len > curlen) {
3587 SvGROW(bigstr, offset+len+1);
3588 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3589 SvCUR_set(bigstr, offset+len);
3593 i = littlelen - len;
3594 if (i > 0) { /* string might grow */
3595 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3596 mid = big + offset + len;
3597 midend = bigend = big + SvCUR(bigstr);
3600 while (midend > mid) /* shove everything down */
3601 *--bigend = *--midend;
3602 Move(little,big+offset,littlelen,char);
3608 Move(little,SvPVX(bigstr)+offset,len,char);
3613 big = SvPVX(bigstr);
3616 bigend = big + SvCUR(bigstr);
3618 if (midend > bigend)
3619 Perl_croak(aTHX_ "panic: sv_insert");
3621 if (mid - big > bigend - midend) { /* faster to shorten from end */
3623 Move(little, mid, littlelen,char);
3626 i = bigend - midend;
3628 Move(midend, mid, i,char);
3632 SvCUR_set(bigstr, mid - big);
3635 else if ((i = mid - big)) { /* faster from front */
3636 midend -= littlelen;
3638 sv_chop(bigstr,midend-i);
3643 Move(little, mid, littlelen,char);
3645 else if (littlelen) {
3646 midend -= littlelen;
3647 sv_chop(bigstr,midend);
3648 Move(little,midend,littlelen,char);
3651 sv_chop(bigstr,midend);
3657 =for apidoc sv_replace
3659 Make the first argument a copy of the second, then delete the original.
3665 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3668 U32 refcnt = SvREFCNT(sv);
3669 SV_CHECK_THINKFIRST(sv);
3670 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3671 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3672 if (SvMAGICAL(sv)) {
3676 sv_upgrade(nsv, SVt_PVMG);
3677 SvMAGIC(nsv) = SvMAGIC(sv);
3678 SvFLAGS(nsv) |= SvMAGICAL(sv);
3684 assert(!SvREFCNT(sv));
3685 StructCopy(nsv,sv,SV);
3686 SvREFCNT(sv) = refcnt;
3687 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3692 =for apidoc sv_clear
3694 Clear an SV, making it empty. Does not free the memory used by the SV
3701 Perl_sv_clear(pTHX_ register SV *sv)
3705 assert(SvREFCNT(sv) == 0);
3709 if (PL_defstash) { /* Still have a symbol table? */
3714 Zero(&tmpref, 1, SV);
3715 sv_upgrade(&tmpref, SVt_RV);
3717 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3718 SvREFCNT(&tmpref) = 1;
3721 stash = SvSTASH(sv);
3722 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3725 PUSHSTACKi(PERLSI_DESTROY);
3726 SvRV(&tmpref) = SvREFCNT_inc(sv);
3731 call_sv((SV*)GvCV(destructor),
3732 G_DISCARD|G_EVAL|G_KEEPERR);
3738 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3740 del_XRV(SvANY(&tmpref));
3743 if (PL_in_clean_objs)
3744 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3746 /* DESTROY gave object new lease on life */
3752 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3753 SvOBJECT_off(sv); /* Curse the object. */
3754 if (SvTYPE(sv) != SVt_PVIO)
3755 --PL_sv_objcount; /* XXX Might want something more general */
3758 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3761 switch (SvTYPE(sv)) {
3764 IoIFP(sv) != PerlIO_stdin() &&
3765 IoIFP(sv) != PerlIO_stdout() &&
3766 IoIFP(sv) != PerlIO_stderr())
3768 io_close((IO*)sv, FALSE);
3770 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3771 PerlDir_close(IoDIRP(sv));
3772 IoDIRP(sv) = (DIR*)NULL;
3773 Safefree(IoTOP_NAME(sv));
3774 Safefree(IoFMT_NAME(sv));
3775 Safefree(IoBOTTOM_NAME(sv));
3790 SvREFCNT_dec(LvTARG(sv));
3794 Safefree(GvNAME(sv));
3795 /* cannot decrease stash refcount yet, as we might recursively delete
3796 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3797 of stash until current sv is completely gone.
3798 -- JohnPC, 27 Mar 1998 */
3799 stash = GvSTASH(sv);
3805 (void)SvOOK_off(sv);
3813 SvREFCNT_dec(SvRV(sv));
3815 else if (SvPVX(sv) && SvLEN(sv))
3816 Safefree(SvPVX(sv));
3817 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3818 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3830 switch (SvTYPE(sv)) {
3846 del_XPVIV(SvANY(sv));
3849 del_XPVNV(SvANY(sv));
3852 del_XPVMG(SvANY(sv));
3855 del_XPVLV(SvANY(sv));
3858 del_XPVAV(SvANY(sv));
3861 del_XPVHV(SvANY(sv));
3864 del_XPVCV(SvANY(sv));
3867 del_XPVGV(SvANY(sv));
3868 /* code duplication for increased performance. */
3869 SvFLAGS(sv) &= SVf_BREAK;
3870 SvFLAGS(sv) |= SVTYPEMASK;
3871 /* decrease refcount of the stash that owns this GV, if any */
3873 SvREFCNT_dec(stash);
3874 return; /* not break, SvFLAGS reset already happened */
3876 del_XPVBM(SvANY(sv));
3879 del_XPVFM(SvANY(sv));
3882 del_XPVIO(SvANY(sv));
3885 SvFLAGS(sv) &= SVf_BREAK;
3886 SvFLAGS(sv) |= SVTYPEMASK;
3890 Perl_sv_newref(pTHX_ SV *sv)
3893 ATOMIC_INC(SvREFCNT(sv));
3900 Free the memory used by an SV.
3906 Perl_sv_free(pTHX_ SV *sv)
3909 int refcount_is_zero;
3913 if (SvREFCNT(sv) == 0) {
3914 if (SvFLAGS(sv) & SVf_BREAK)
3916 if (PL_in_clean_all) /* All is fair */
3918 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3919 /* make sure SvREFCNT(sv)==0 happens very seldom */
3920 SvREFCNT(sv) = (~(U32)0)/2;
3923 if (ckWARN_d(WARN_INTERNAL))
3924 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3927 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3928 if (!refcount_is_zero)
3932 if (ckWARN_d(WARN_DEBUGGING))
3933 Perl_warner(aTHX_ WARN_DEBUGGING,
3934 "Attempt to free temp prematurely: SV 0x%"UVxf,
3939 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3940 /* make sure SvREFCNT(sv)==0 happens very seldom */
3941 SvREFCNT(sv) = (~(U32)0)/2;
3952 Returns the length of the string in the SV. See also C<SvCUR>.
3958 Perl_sv_len(pTHX_ register SV *sv)
3967 len = mg_length(sv);
3969 junk = SvPV(sv, len);
3974 =for apidoc sv_len_utf8
3976 Returns the number of characters in the string in an SV, counting wide
3977 UTF8 bytes as a single character.
3983 Perl_sv_len_utf8(pTHX_ register SV *sv)
3994 len = mg_length(sv);
3997 s = (U8*)SvPV(sv, len);
4008 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4013 I32 uoffset = *offsetp;
4019 start = s = (U8*)SvPV(sv, len);
4021 while (s < send && uoffset--)
4025 *offsetp = s - start;
4029 while (s < send && ulen--)
4039 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4048 s = (U8*)SvPV(sv, len);
4050 Perl_croak(aTHX_ "panic: bad byte offset");
4051 send = s + *offsetp;
4059 if (ckWARN_d(WARN_UTF8))
4060 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4070 Returns a boolean indicating whether the strings in the two SVs are
4077 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4084 bool pv1tmp = FALSE;
4085 bool pv2tmp = FALSE;
4092 pv1 = SvPV(sv1, cur1);
4099 pv2 = SvPV(sv2, cur2);
4101 /* do not utf8ize the comparands as a side-effect */
4102 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4104 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4108 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4114 eq = memEQ(pv1, pv2, cur1);
4127 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4128 string in C<sv1> is less than, equal to, or greater than the string in
4135 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4140 bool pv1tmp = FALSE;
4141 bool pv2tmp = FALSE;
4148 pv1 = SvPV(sv1, cur1);
4155 pv2 = SvPV(sv2, cur2);
4157 /* do not utf8ize the comparands as a side-effect */
4158 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4160 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4164 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4170 cmp = cur2 ? -1 : 0;
4174 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4177 cmp = retval < 0 ? -1 : 1;
4178 } else if (cur1 == cur2) {
4181 cmp = cur1 < cur2 ? -1 : 1;
4194 =for apidoc sv_cmp_locale
4196 Compares the strings in two SVs in a locale-aware manner. See
4203 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4205 #ifdef USE_LOCALE_COLLATE
4211 if (PL_collation_standard)
4215 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4217 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4219 if (!pv1 || !len1) {
4230 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4233 return retval < 0 ? -1 : 1;
4236 * When the result of collation is equality, that doesn't mean
4237 * that there are no differences -- some locales exclude some
4238 * characters from consideration. So to avoid false equalities,
4239 * we use the raw string as a tiebreaker.
4245 #endif /* USE_LOCALE_COLLATE */
4247 return sv_cmp(sv1, sv2);
4250 #ifdef USE_LOCALE_COLLATE
4252 * Any scalar variable may carry an 'o' magic that contains the
4253 * scalar data of the variable transformed to such a format that
4254 * a normal memory comparison can be used to compare the data
4255 * according to the locale settings.
4258 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4262 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4263 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4268 Safefree(mg->mg_ptr);
4270 if ((xf = mem_collxfrm(s, len, &xlen))) {
4271 if (SvREADONLY(sv)) {
4274 return xf + sizeof(PL_collation_ix);
4277 sv_magic(sv, 0, 'o', 0, 0);
4278 mg = mg_find(sv, 'o');
4291 if (mg && mg->mg_ptr) {
4293 return mg->mg_ptr + sizeof(PL_collation_ix);
4301 #endif /* USE_LOCALE_COLLATE */
4306 Get a line from the filehandle and store it into the SV, optionally
4307 appending to the currently-stored string.
4313 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4318 register STDCHAR rslast;
4319 register STDCHAR *bp;
4323 SV_CHECK_THINKFIRST(sv);
4324 (void)SvUPGRADE(sv, SVt_PV);
4328 if (RsSNARF(PL_rs)) {
4332 else if (RsRECORD(PL_rs)) {
4333 I32 recsize, bytesread;
4336 /* Grab the size of the record we're getting */
4337 recsize = SvIV(SvRV(PL_rs));
4338 (void)SvPOK_only(sv); /* Validate pointer */
4339 buffer = SvGROW(sv, recsize + 1);
4342 /* VMS wants read instead of fread, because fread doesn't respect */
4343 /* RMS record boundaries. This is not necessarily a good thing to be */
4344 /* doing, but we've got no other real choice */
4345 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4347 bytesread = PerlIO_read(fp, buffer, recsize);
4349 SvCUR_set(sv, bytesread);
4350 buffer[bytesread] = '\0';
4351 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4353 else if (RsPARA(PL_rs)) {
4358 rsptr = SvPV(PL_rs, rslen);
4359 rslast = rslen ? rsptr[rslen - 1] : '\0';
4361 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4362 do { /* to make sure file boundaries work right */
4365 i = PerlIO_getc(fp);
4369 PerlIO_ungetc(fp,i);
4375 /* See if we know enough about I/O mechanism to cheat it ! */
4377 /* This used to be #ifdef test - it is made run-time test for ease
4378 of abstracting out stdio interface. One call should be cheap
4379 enough here - and may even be a macro allowing compile
4383 if (PerlIO_fast_gets(fp)) {
4386 * We're going to steal some values from the stdio struct
4387 * and put EVERYTHING in the innermost loop into registers.
4389 register STDCHAR *ptr;
4393 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4394 /* An ungetc()d char is handled separately from the regular
4395 * buffer, so we getc() it back out and stuff it in the buffer.
4397 i = PerlIO_getc(fp);
4398 if (i == EOF) return 0;
4399 *(--((*fp)->_ptr)) = (unsigned char) i;
4403 /* Here is some breathtakingly efficient cheating */
4405 cnt = PerlIO_get_cnt(fp); /* get count into register */
4406 (void)SvPOK_only(sv); /* validate pointer */
4407 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4408 if (cnt > 80 && SvLEN(sv) > append) {
4409 shortbuffered = cnt - SvLEN(sv) + append + 1;
4410 cnt -= shortbuffered;
4414 /* remember that cnt can be negative */
4415 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4420 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4421 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4422 DEBUG_P(PerlIO_printf(Perl_debug_log,
4423 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4424 DEBUG_P(PerlIO_printf(Perl_debug_log,
4425 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4426 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4427 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4432 while (cnt > 0) { /* this | eat */
4434 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4435 goto thats_all_folks; /* screams | sed :-) */
4439 Copy(ptr, bp, cnt, char); /* this | eat */
4440 bp += cnt; /* screams | dust */
4441 ptr += cnt; /* louder | sed :-) */
4446 if (shortbuffered) { /* oh well, must extend */
4447 cnt = shortbuffered;
4449 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4451 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4452 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4456 DEBUG_P(PerlIO_printf(Perl_debug_log,
4457 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4458 PTR2UV(ptr),(long)cnt));
4459 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4460 DEBUG_P(PerlIO_printf(Perl_debug_log,
4461 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4462 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4463 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4464 /* This used to call 'filbuf' in stdio form, but as that behaves like
4465 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4466 another abstraction. */
4467 i = PerlIO_getc(fp); /* get more characters */
4468 DEBUG_P(PerlIO_printf(Perl_debug_log,
4469 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4470 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4471 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4472 cnt = PerlIO_get_cnt(fp);
4473 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4474 DEBUG_P(PerlIO_printf(Perl_debug_log,
4475 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4477 if (i == EOF) /* all done for ever? */
4478 goto thats_really_all_folks;
4480 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4482 SvGROW(sv, bpx + cnt + 2);
4483 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4485 *bp++ = i; /* store character from PerlIO_getc */
4487 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4488 goto thats_all_folks;
4492 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4493 memNE((char*)bp - rslen, rsptr, rslen))
4494 goto screamer; /* go back to the fray */
4495 thats_really_all_folks:
4497 cnt += shortbuffered;
4498 DEBUG_P(PerlIO_printf(Perl_debug_log,
4499 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4500 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4501 DEBUG_P(PerlIO_printf(Perl_debug_log,
4502 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4503 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4504 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4506 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4507 DEBUG_P(PerlIO_printf(Perl_debug_log,
4508 "Screamer: done, len=%ld, string=|%.*s|\n",
4509 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4514 /*The big, slow, and stupid way */
4517 /* Need to work around EPOC SDK features */
4518 /* On WINS: MS VC5 generates calls to _chkstk, */
4519 /* if a `large' stack frame is allocated */
4520 /* gcc on MARM does not generate calls like these */
4526 register STDCHAR *bpe = buf + sizeof(buf);
4528 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4529 ; /* keep reading */
4533 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4534 /* Accomodate broken VAXC compiler, which applies U8 cast to
4535 * both args of ?: operator, causing EOF to change into 255
4537 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4541 sv_catpvn(sv, (char *) buf, cnt);
4543 sv_setpvn(sv, (char *) buf, cnt);
4545 if (i != EOF && /* joy */
4547 SvCUR(sv) < rslen ||
4548 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4552 * If we're reading from a TTY and we get a short read,
4553 * indicating that the user hit his EOF character, we need
4554 * to notice it now, because if we try to read from the TTY
4555 * again, the EOF condition will disappear.
4557 * The comparison of cnt to sizeof(buf) is an optimization
4558 * that prevents unnecessary calls to feof().
4562 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4567 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4568 while (i != EOF) { /* to make sure file boundaries work right */
4569 i = PerlIO_getc(fp);
4571 PerlIO_ungetc(fp,i);
4577 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4584 Auto-increment of the value in the SV.
4590 Perl_sv_inc(pTHX_ register SV *sv)
4599 if (SvTHINKFIRST(sv)) {
4600 if (SvREADONLY(sv)) {
4602 if (PL_curcop != &PL_compiling)
4603 Perl_croak(aTHX_ PL_no_modify);
4607 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4609 i = PTR2IV(SvRV(sv));
4614 flags = SvFLAGS(sv);
4615 if (flags & SVp_NOK) {
4616 (void)SvNOK_only(sv);
4620 if (flags & SVp_IOK) {
4622 if (SvUVX(sv) == UV_MAX)
4623 sv_setnv(sv, (NV)UV_MAX + 1.0);
4625 (void)SvIOK_only_UV(sv);
4628 if (SvIVX(sv) == IV_MAX)
4629 sv_setnv(sv, (NV)IV_MAX + 1.0);
4631 (void)SvIOK_only(sv);
4637 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4638 if ((flags & SVTYPEMASK) < SVt_PVNV)
4639 sv_upgrade(sv, SVt_NV);
4641 (void)SvNOK_only(sv);
4645 while (isALPHA(*d)) d++;
4646 while (isDIGIT(*d)) d++;
4648 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4652 while (d >= SvPVX(sv)) {
4660 /* MKS: The original code here died if letters weren't consecutive.
4661 * at least it didn't have to worry about non-C locales. The
4662 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4663 * arranged in order (although not consecutively) and that only
4664 * [A-Za-z] are accepted by isALPHA in the C locale.
4666 if (*d != 'z' && *d != 'Z') {
4667 do { ++*d; } while (!isALPHA(*d));
4670 *(d--) -= 'z' - 'a';
4675 *(d--) -= 'z' - 'a' + 1;
4679 /* oh,oh, the number grew */
4680 SvGROW(sv, SvCUR(sv) + 2);
4682 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4693 Auto-decrement of the value in the SV.
4699 Perl_sv_dec(pTHX_ register SV *sv)
4707 if (SvTHINKFIRST(sv)) {
4708 if (SvREADONLY(sv)) {
4710 if (PL_curcop != &PL_compiling)
4711 Perl_croak(aTHX_ PL_no_modify);
4715 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4717 i = PTR2IV(SvRV(sv));
4722 flags = SvFLAGS(sv);
4723 if (flags & SVp_NOK) {
4725 (void)SvNOK_only(sv);
4728 if (flags & SVp_IOK) {
4730 if (SvUVX(sv) == 0) {
4731 (void)SvIOK_only(sv);
4735 (void)SvIOK_only_UV(sv);
4739 if (SvIVX(sv) == IV_MIN)
4740 sv_setnv(sv, (NV)IV_MIN - 1.0);
4742 (void)SvIOK_only(sv);
4748 if (!(flags & SVp_POK)) {
4749 if ((flags & SVTYPEMASK) < SVt_PVNV)
4750 sv_upgrade(sv, SVt_NV);
4752 (void)SvNOK_only(sv);
4755 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4759 =for apidoc sv_mortalcopy
4761 Creates a new SV which is a copy of the original SV. The new SV is marked
4767 /* Make a string that will exist for the duration of the expression
4768 * evaluation. Actually, it may have to last longer than that, but
4769 * hopefully we won't free it until it has been assigned to a
4770 * permanent location. */
4773 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4779 sv_setsv(sv,oldstr);
4781 PL_tmps_stack[++PL_tmps_ix] = sv;
4787 =for apidoc sv_newmortal
4789 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4795 Perl_sv_newmortal(pTHX)
4801 SvFLAGS(sv) = SVs_TEMP;
4803 PL_tmps_stack[++PL_tmps_ix] = sv;
4808 =for apidoc sv_2mortal
4810 Marks an SV as mortal. The SV will be destroyed when the current context
4816 /* same thing without the copying */
4819 Perl_sv_2mortal(pTHX_ register SV *sv)
4824 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4827 PL_tmps_stack[++PL_tmps_ix] = sv;
4835 Creates a new SV and copies a string into it. The reference count for the
4836 SV is set to 1. If C<len> is zero, Perl will compute the length using
4837 strlen(). For efficiency, consider using C<newSVpvn> instead.
4843 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4850 sv_setpvn(sv,s,len);
4855 =for apidoc newSVpvn
4857 Creates a new SV and copies a string into it. The reference count for the
4858 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4859 string. You are responsible for ensuring that the source string is at least
4866 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4871 sv_setpvn(sv,s,len);
4876 =for apidoc newSVpvn_share
4878 Creates a new SV and populates it with a string from
4879 the string table. Turns on READONLY and FAKE.
4880 The idea here is that as string table is used for shared hash
4881 keys these strings will have SvPVX == HeKEY and hash lookup
4882 will avoid string compare.
4888 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4892 PERL_HASH(hash, src, len);
4894 sv_upgrade(sv, SVt_PVIV);
4895 SvPVX(sv) = sharepvn(src, len, hash);
4905 #if defined(PERL_IMPLICIT_CONTEXT)
4907 Perl_newSVpvf_nocontext(const char* pat, ...)
4912 va_start(args, pat);
4913 sv = vnewSVpvf(pat, &args);
4920 =for apidoc newSVpvf
4922 Creates a new SV an initialize it with the string formatted like
4929 Perl_newSVpvf(pTHX_ const char* pat, ...)
4933 va_start(args, pat);
4934 sv = vnewSVpvf(pat, &args);
4940 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4944 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4951 Creates a new SV and copies a floating point value into it.
4952 The reference count for the SV is set to 1.
4958 Perl_newSVnv(pTHX_ NV n)
4970 Creates a new SV and copies an integer into it. The reference count for the
4977 Perl_newSViv(pTHX_ IV i)
4989 Creates a new SV and copies an unsigned integer into it.
4990 The reference count for the SV is set to 1.
4996 Perl_newSVuv(pTHX_ UV u)
5006 =for apidoc newRV_noinc
5008 Creates an RV wrapper for an SV. The reference count for the original
5009 SV is B<not> incremented.
5015 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5021 sv_upgrade(sv, SVt_RV);
5028 /* newRV_inc is #defined to newRV in sv.h */
5030 Perl_newRV(pTHX_ SV *tmpRef)
5032 return newRV_noinc(SvREFCNT_inc(tmpRef));
5038 Creates a new SV which is an exact duplicate of the original SV.
5043 /* make an exact duplicate of old */
5046 Perl_newSVsv(pTHX_ register SV *old)
5053 if (SvTYPE(old) == SVTYPEMASK) {
5054 if (ckWARN_d(WARN_INTERNAL))
5055 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5070 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5078 char todo[PERL_UCHAR_MAX+1];
5083 if (!*s) { /* reset ?? searches */
5084 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5085 pm->op_pmdynflags &= ~PMdf_USED;
5090 /* reset variables */
5092 if (!HvARRAY(stash))
5095 Zero(todo, 256, char);
5097 i = (unsigned char)*s;
5101 max = (unsigned char)*s++;
5102 for ( ; i <= max; i++) {
5105 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5106 for (entry = HvARRAY(stash)[i];
5108 entry = HeNEXT(entry))
5110 if (!todo[(U8)*HeKEY(entry)])
5112 gv = (GV*)HeVAL(entry);
5114 if (SvTHINKFIRST(sv)) {
5115 if (!SvREADONLY(sv) && SvROK(sv))
5120 if (SvTYPE(sv) >= SVt_PV) {
5122 if (SvPVX(sv) != Nullch)
5129 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5131 #if !defined( VMS) && !defined(EPOC) /* VMS has no environ array */
5133 environ[0] = Nullch;
5142 Perl_sv_2io(pTHX_ SV *sv)
5148 switch (SvTYPE(sv)) {
5156 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5160 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5162 return sv_2io(SvRV(sv));
5163 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5169 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5176 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5183 return *gvp = Nullgv, Nullcv;
5184 switch (SvTYPE(sv)) {
5204 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5205 tryAMAGICunDEREF(to_cv);
5208 if (SvTYPE(sv) == SVt_PVCV) {
5217 Perl_croak(aTHX_ "Not a subroutine reference");
5222 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5228 if (lref && !GvCVu(gv)) {
5231 tmpsv = NEWSV(704,0);
5232 gv_efullname3(tmpsv, gv, Nullch);
5233 /* XXX this is probably not what they think they're getting.
5234 * It has the same effect as "sub name;", i.e. just a forward
5236 newSUB(start_subparse(FALSE, 0),
5237 newSVOP(OP_CONST, 0, tmpsv),
5242 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5251 Returns true if the SV has a true value by Perl's rules.
5257 Perl_sv_true(pTHX_ register SV *sv)
5264 if ((tXpv = (XPV*)SvANY(sv)) &&
5265 (tXpv->xpv_cur > 1 ||
5266 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5273 return SvIVX(sv) != 0;
5276 return SvNVX(sv) != 0.0;
5278 return sv_2bool(sv);
5284 Perl_sv_iv(pTHX_ register SV *sv)
5288 return (IV)SvUVX(sv);
5295 Perl_sv_uv(pTHX_ register SV *sv)
5300 return (UV)SvIVX(sv);
5306 Perl_sv_nv(pTHX_ register SV *sv)
5314 Perl_sv_pv(pTHX_ SV *sv)
5321 return sv_2pv(sv, &n_a);
5325 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5331 return sv_2pv(sv, lp);
5335 =for apidoc sv_pvn_force
5337 Get a sensible string out of the SV somehow.
5343 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5347 if (SvTHINKFIRST(sv) && !SvROK(sv))
5348 sv_force_normal(sv);
5354 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5356 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5357 PL_op_name[PL_op->op_type]);
5361 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5366 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5367 SvGROW(sv, len + 1);
5368 Move(s,SvPVX(sv),len,char);
5373 SvPOK_on(sv); /* validate pointer */
5375 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5376 PTR2UV(sv),SvPVX(sv)));
5383 Perl_sv_pvbyte(pTHX_ SV *sv)
5389 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5391 return sv_pvn(sv,lp);
5395 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5397 return sv_pvn_force(sv,lp);
5401 Perl_sv_pvutf8(pTHX_ SV *sv)
5403 sv_utf8_upgrade(sv);
5408 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5410 sv_utf8_upgrade(sv);
5411 return sv_pvn(sv,lp);
5415 =for apidoc sv_pvutf8n_force
5417 Get a sensible UTF8-encoded string out of the SV somehow. See
5424 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5426 sv_utf8_upgrade(sv);
5427 return sv_pvn_force(sv,lp);
5431 =for apidoc sv_reftype
5433 Returns a string describing what the SV is a reference to.
5439 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5441 if (ob && SvOBJECT(sv))
5442 return HvNAME(SvSTASH(sv));
5444 switch (SvTYPE(sv)) {
5458 case SVt_PVLV: return "LVALUE";
5459 case SVt_PVAV: return "ARRAY";
5460 case SVt_PVHV: return "HASH";
5461 case SVt_PVCV: return "CODE";
5462 case SVt_PVGV: return "GLOB";
5463 case SVt_PVFM: return "FORMAT";
5464 case SVt_PVIO: return "IO";
5465 default: return "UNKNOWN";
5471 =for apidoc sv_isobject
5473 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5474 object. If the SV is not an RV, or if the object is not blessed, then this
5481 Perl_sv_isobject(pTHX_ SV *sv)
5498 Returns a boolean indicating whether the SV is blessed into the specified
5499 class. This does not check for subtypes; use C<sv_derived_from> to verify
5500 an inheritance relationship.
5506 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5518 return strEQ(HvNAME(SvSTASH(sv)), name);
5524 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5525 it will be upgraded to one. If C<classname> is non-null then the new SV will
5526 be blessed in the specified package. The new SV is returned and its
5527 reference count is 1.
5533 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5540 SV_CHECK_THINKFIRST(rv);
5543 if (SvTYPE(rv) >= SVt_PVMG) {
5544 U32 refcnt = SvREFCNT(rv);
5548 SvREFCNT(rv) = refcnt;
5551 if (SvTYPE(rv) < SVt_RV)
5552 sv_upgrade(rv, SVt_RV);
5553 else if (SvTYPE(rv) > SVt_RV) {
5554 (void)SvOOK_off(rv);
5555 if (SvPVX(rv) && SvLEN(rv))
5556 Safefree(SvPVX(rv));
5566 HV* stash = gv_stashpv(classname, TRUE);
5567 (void)sv_bless(rv, stash);
5573 =for apidoc sv_setref_pv
5575 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5576 argument will be upgraded to an RV. That RV will be modified to point to
5577 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5578 into the SV. The C<classname> argument indicates the package for the
5579 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5580 will be returned and will have a reference count of 1.
5582 Do not use with other Perl types such as HV, AV, SV, CV, because those
5583 objects will become corrupted by the pointer copy process.
5585 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5591 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5594 sv_setsv(rv, &PL_sv_undef);
5598 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5603 =for apidoc sv_setref_iv
5605 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5606 argument will be upgraded to an RV. That RV will be modified to point to
5607 the new SV. The C<classname> argument indicates the package for the
5608 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5609 will be returned and will have a reference count of 1.
5615 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5617 sv_setiv(newSVrv(rv,classname), iv);
5622 =for apidoc sv_setref_nv
5624 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5625 argument will be upgraded to an RV. That RV will be modified to point to
5626 the new SV. The C<classname> argument indicates the package for the
5627 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5628 will be returned and will have a reference count of 1.
5634 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5636 sv_setnv(newSVrv(rv,classname), nv);
5641 =for apidoc sv_setref_pvn
5643 Copies a string into a new SV, optionally blessing the SV. The length of the
5644 string must be specified with C<n>. The C<rv> argument will be upgraded to
5645 an RV. That RV will be modified to point to the new SV. The C<classname>
5646 argument indicates the package for the blessing. Set C<classname> to
5647 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5648 a reference count of 1.
5650 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5656 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5658 sv_setpvn(newSVrv(rv,classname), pv, n);
5663 =for apidoc sv_bless
5665 Blesses an SV into a specified package. The SV must be an RV. The package
5666 must be designated by its stash (see C<gv_stashpv()>). The reference count
5667 of the SV is unaffected.
5673 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5678 Perl_croak(aTHX_ "Can't bless non-reference value");
5680 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5681 if (SvREADONLY(tmpRef))
5682 Perl_croak(aTHX_ PL_no_modify);
5683 if (SvOBJECT(tmpRef)) {
5684 if (SvTYPE(tmpRef) != SVt_PVIO)
5686 SvREFCNT_dec(SvSTASH(tmpRef));
5689 SvOBJECT_on(tmpRef);
5690 if (SvTYPE(tmpRef) != SVt_PVIO)
5692 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5693 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5704 S_sv_unglob(pTHX_ SV *sv)
5708 assert(SvTYPE(sv) == SVt_PVGV);
5713 SvREFCNT_dec(GvSTASH(sv));
5714 GvSTASH(sv) = Nullhv;
5716 sv_unmagic(sv, '*');
5717 Safefree(GvNAME(sv));
5720 /* need to keep SvANY(sv) in the right arena */
5721 xpvmg = new_XPVMG();
5722 StructCopy(SvANY(sv), xpvmg, XPVMG);
5723 del_XPVGV(SvANY(sv));
5726 SvFLAGS(sv) &= ~SVTYPEMASK;
5727 SvFLAGS(sv) |= SVt_PVMG;
5731 =for apidoc sv_unref
5733 Unsets the RV status of the SV, and decrements the reference count of
5734 whatever was being referenced by the RV. This can almost be thought of
5735 as a reversal of C<newSVrv>. See C<SvROK_off>.
5741 Perl_sv_unref(pTHX_ SV *sv)
5745 if (SvWEAKREF(sv)) {
5753 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5756 sv_2mortal(rv); /* Schedule for freeing later */
5760 Perl_sv_taint(pTHX_ SV *sv)
5762 sv_magic((sv), Nullsv, 't', Nullch, 0);
5766 Perl_sv_untaint(pTHX_ SV *sv)
5768 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5769 MAGIC *mg = mg_find(sv, 't');
5776 Perl_sv_tainted(pTHX_ SV *sv)
5778 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5779 MAGIC *mg = mg_find(sv, 't');
5780 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5787 =for apidoc sv_setpviv
5789 Copies an integer into the given SV, also updating its string value.
5790 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5796 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5798 char buf[TYPE_CHARS(UV)];
5800 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5802 sv_setpvn(sv, ptr, ebuf - ptr);
5807 =for apidoc sv_setpviv_mg
5809 Like C<sv_setpviv>, but also handles 'set' magic.
5815 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5817 char buf[TYPE_CHARS(UV)];
5819 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5821 sv_setpvn(sv, ptr, ebuf - ptr);
5825 #if defined(PERL_IMPLICIT_CONTEXT)
5827 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5831 va_start(args, pat);
5832 sv_vsetpvf(sv, pat, &args);
5838 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5842 va_start(args, pat);
5843 sv_vsetpvf_mg(sv, pat, &args);
5849 =for apidoc sv_setpvf
5851 Processes its arguments like C<sprintf> and sets an SV to the formatted
5852 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5858 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5861 va_start(args, pat);
5862 sv_vsetpvf(sv, pat, &args);
5867 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5869 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5873 =for apidoc sv_setpvf_mg
5875 Like C<sv_setpvf>, but also handles 'set' magic.
5881 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5884 va_start(args, pat);
5885 sv_vsetpvf_mg(sv, pat, &args);
5890 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5892 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5896 #if defined(PERL_IMPLICIT_CONTEXT)
5898 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5902 va_start(args, pat);
5903 sv_vcatpvf(sv, pat, &args);
5908 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5912 va_start(args, pat);
5913 sv_vcatpvf_mg(sv, pat, &args);
5919 =for apidoc sv_catpvf
5921 Processes its arguments like C<sprintf> and appends the formatted output
5922 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5923 typically be called after calling this function to handle 'set' magic.
5929 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5932 va_start(args, pat);
5933 sv_vcatpvf(sv, pat, &args);
5938 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5940 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5944 =for apidoc sv_catpvf_mg
5946 Like C<sv_catpvf>, but also handles 'set' magic.
5952 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5955 va_start(args, pat);
5956 sv_vcatpvf_mg(sv, pat, &args);
5961 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5963 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5968 =for apidoc sv_vsetpvfn
5970 Works like C<vcatpvfn> but copies the text into the SV instead of
5977 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5979 sv_setpvn(sv, "", 0);
5980 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5984 =for apidoc sv_vcatpvfn
5986 Processes its arguments like C<vsprintf> and appends the formatted output
5987 to an SV. Uses an array of SVs if the C style variable argument list is
5988 missing (NULL). When running with taint checks enabled, indicates via
5989 C<maybe_tainted> if results are untrustworthy (often due to the use of
5996 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6004 static char nullstr[] = "(null)";
6007 /* no matter what, this is a string now */
6008 (void)SvPV_force(sv, origlen);
6010 /* special-case "", "%s", and "%_" */
6013 if (patlen == 2 && pat[0] == '%') {
6017 char *s = va_arg(*args, char*);
6018 sv_catpv(sv, s ? s : nullstr);
6020 else if (svix < svmax) {
6021 sv_catsv(sv, *svargs);
6022 if (DO_UTF8(*svargs))
6028 argsv = va_arg(*args, SV*);
6029 sv_catsv(sv, argsv);
6034 /* See comment on '_' below */
6039 patend = (char*)pat + patlen;
6040 for (p = (char*)pat; p < patend; p = q) {
6043 bool vectorize = FALSE;
6050 bool has_precis = FALSE;
6052 bool is_utf = FALSE;
6055 U8 utf8buf[UTF8_MAXLEN];
6056 STRLEN esignlen = 0;
6058 char *eptr = Nullch;
6060 /* Times 4: a decimal digit takes more than 3 binary digits.
6061 * NV_DIG: mantissa takes than many decimal digits.
6062 * Plus 32: Playing safe. */
6063 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6064 /* large enough for "%#.#f" --chip */
6065 /* what about long double NVs? --jhi */
6068 U8 *vecstr = Null(U8*);
6080 STRLEN dotstrlen = 1;
6082 for (q = p; q < patend && *q != '%'; ++q) ;
6084 sv_catpvn(sv, p, q - p);
6113 case '*': /* printf("%*vX",":",$ipv6addr) */
6118 vecsv = va_arg(*args, SV*);
6119 else if (svix < svmax)
6120 vecsv = svargs[svix++];
6123 dotstr = SvPVx(vecsv,dotstrlen);
6142 case '1': case '2': case '3':
6143 case '4': case '5': case '6':
6144 case '7': case '8': case '9':
6147 width = width * 10 + (*q++ - '0');
6152 i = va_arg(*args, int);
6154 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6156 width = (i < 0) ? -i : i;
6167 i = va_arg(*args, int);
6169 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6170 precis = (i < 0) ? 0 : i;
6176 precis = precis * 10 + (*q++ - '0');
6183 vecsv = va_arg(*args, SV*);
6184 vecstr = (U8*)SvPVx(vecsv,veclen);
6185 utf = DO_UTF8(vecsv);
6187 else if (svix < svmax) {
6188 vecsv = svargs[svix++];
6189 vecstr = (U8*)SvPVx(vecsv,veclen);
6190 utf = DO_UTF8(vecsv);
6201 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6212 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6213 if (*(q + 1) == 'l') { /* lld, llf */
6240 uv = va_arg(*args, int);
6242 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6243 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6244 eptr = (char*)utf8buf;
6245 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6257 eptr = va_arg(*args, char*);
6259 #ifdef MACOS_TRADITIONAL
6260 /* On MacOS, %#s format is used for Pascal strings */
6265 elen = strlen(eptr);
6268 elen = sizeof nullstr - 1;
6271 else if (svix < svmax) {
6272 argsv = svargs[svix++];
6273 eptr = SvPVx(argsv, elen);
6274 if (DO_UTF8(argsv)) {
6275 if (has_precis && precis < elen) {
6277 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6280 if (width) { /* fudge width (can't fudge elen) */
6281 width += elen - sv_len_utf8(argsv);
6290 * The "%_" hack might have to be changed someday,
6291 * if ISO or ANSI decide to use '_' for something.
6292 * So we keep it hidden from users' code.
6296 argsv = va_arg(*args,SV*);
6297 eptr = SvPVx(argsv, elen);
6303 if (has_precis && elen > precis)
6313 uv = PTR2UV(va_arg(*args, void*));
6315 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
6335 iv = (IV)utf8_to_uv_chk(vecstr, &ulen, 0);
6345 case 'h': iv = (short)va_arg(*args, int); break;
6346 default: iv = va_arg(*args, int); break;
6347 case 'l': iv = va_arg(*args, long); break;
6348 case 'V': iv = va_arg(*args, IV); break;
6350 case 'q': iv = va_arg(*args, Quad_t); break;
6355 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6357 case 'h': iv = (short)iv; break;
6359 case 'l': iv = (long)iv; break;
6362 case 'q': iv = (Quad_t)iv; break;
6369 esignbuf[esignlen++] = plus;
6373 esignbuf[esignlen++] = '-';
6417 uv = utf8_to_uv_chk(vecstr, &ulen, 0);
6427 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6428 default: uv = va_arg(*args, unsigned); break;
6429 case 'l': uv = va_arg(*args, unsigned long); break;
6430 case 'V': uv = va_arg(*args, UV); break;
6432 case 'q': uv = va_arg(*args, Quad_t); break;
6437 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6439 case 'h': uv = (unsigned short)uv; break;
6441 case 'l': uv = (unsigned long)uv; break;
6444 case 'q': uv = (Quad_t)uv; break;
6450 eptr = ebuf + sizeof ebuf;
6456 p = (char*)((c == 'X')
6457 ? "0123456789ABCDEF" : "0123456789abcdef");
6463 esignbuf[esignlen++] = '0';
6464 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6470 *--eptr = '0' + dig;
6472 if (alt && *eptr != '0')
6478 *--eptr = '0' + dig;
6481 esignbuf[esignlen++] = '0';
6482 esignbuf[esignlen++] = 'b';
6485 default: /* it had better be ten or less */
6486 #if defined(PERL_Y2KWARN)
6487 if (ckWARN(WARN_Y2K)) {
6489 char *s = SvPV(sv,n);
6490 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6491 && (n == 2 || !isDIGIT(s[n-3])))
6493 Perl_warner(aTHX_ WARN_Y2K,
6494 "Possible Y2K bug: %%%c %s",
6495 c, "format string following '19'");
6501 *--eptr = '0' + dig;
6502 } while (uv /= base);
6505 elen = (ebuf + sizeof ebuf) - eptr;
6508 zeros = precis - elen;
6509 else if (precis == 0 && elen == 1 && *eptr == '0')
6514 /* FLOATING POINT */
6517 c = 'f'; /* maybe %F isn't supported here */
6523 /* This is evil, but floating point is even more evil */
6527 nv = va_arg(*args, NV);
6529 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6532 if (c != 'e' && c != 'E') {
6534 (void)Perl_frexp(nv, &i);
6535 if (i == PERL_INT_MIN)
6536 Perl_die(aTHX_ "panic: frexp");
6538 need = BIT_DIGITS(i);
6540 need += has_precis ? precis : 6; /* known default */
6544 need += 20; /* fudge factor */
6545 if (PL_efloatsize < need) {
6546 Safefree(PL_efloatbuf);
6547 PL_efloatsize = need + 20; /* more fudge */
6548 New(906, PL_efloatbuf, PL_efloatsize, char);
6549 PL_efloatbuf[0] = '\0';
6552 eptr = ebuf + sizeof ebuf;
6555 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6557 /* Copy the one or more characters in a long double
6558 * format before the 'base' ([efgEFG]) character to
6559 * the format string. */
6560 static char const prifldbl[] = PERL_PRIfldbl;
6561 char const *p = prifldbl + sizeof(prifldbl) - 3;
6562 while (p >= prifldbl) { *--eptr = *p--; }
6567 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6572 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6585 STORE_NUMERIC_STANDARD_SET_LOCAL();
6586 #ifdef USE_LOCALE_NUMERIC
6587 if (!was_standard && maybe_tainted)
6588 *maybe_tainted = TRUE;
6590 (void)sprintf(PL_efloatbuf, eptr, nv);
6591 RESTORE_NUMERIC_STANDARD();
6594 eptr = PL_efloatbuf;
6595 elen = strlen(PL_efloatbuf);
6602 i = SvCUR(sv) - origlen;
6605 case 'h': *(va_arg(*args, short*)) = i; break;
6606 default: *(va_arg(*args, int*)) = i; break;
6607 case 'l': *(va_arg(*args, long*)) = i; break;
6608 case 'V': *(va_arg(*args, IV*)) = i; break;
6610 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6614 else if (svix < svmax)
6615 sv_setuv_mg(svargs[svix++], (UV)i);
6616 continue; /* not "break" */
6623 if (!args && ckWARN(WARN_PRINTF) &&
6624 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6625 SV *msg = sv_newmortal();
6626 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6627 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6630 Perl_sv_catpvf(aTHX_ msg,
6631 "\"%%%c\"", c & 0xFF);
6633 Perl_sv_catpvf(aTHX_ msg,
6634 "\"%%\\%03"UVof"\"",
6637 sv_catpv(msg, "end of string");
6638 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6641 /* output mangled stuff ... */
6647 /* ... right here, because formatting flags should not apply */
6648 SvGROW(sv, SvCUR(sv) + elen + 1);
6650 memcpy(p, eptr, elen);
6653 SvCUR(sv) = p - SvPVX(sv);
6654 continue; /* not "break" */
6657 have = esignlen + zeros + elen;
6658 need = (have > width ? have : width);
6661 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6663 if (esignlen && fill == '0') {
6664 for (i = 0; i < esignlen; i++)
6668 memset(p, fill, gap);
6671 if (esignlen && fill != '0') {
6672 for (i = 0; i < esignlen; i++)
6676 for (i = zeros; i; i--)
6680 memcpy(p, eptr, elen);
6684 memset(p, ' ', gap);
6689 memcpy(p, dotstr, dotstrlen);
6693 vectorize = FALSE; /* done iterating over vecstr */
6698 SvCUR(sv) = p - SvPVX(sv);
6706 #if defined(USE_ITHREADS)
6708 #if defined(USE_THREADS)
6709 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6712 #ifndef GpREFCNT_inc
6713 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6717 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6718 #define av_dup(s) (AV*)sv_dup((SV*)s)
6719 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6720 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6721 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6722 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6723 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6724 #define io_dup(s) (IO*)sv_dup((SV*)s)
6725 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6726 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6727 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6728 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6729 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6732 Perl_re_dup(pTHX_ REGEXP *r)
6734 /* XXX fix when pmop->op_pmregexp becomes shared */
6735 return ReREFCNT_inc(r);
6739 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6743 return (PerlIO*)NULL;
6745 /* look for it in the table first */
6746 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6750 /* create anew and remember what it is */
6751 ret = PerlIO_fdupopen(fp);
6752 ptr_table_store(PL_ptr_table, fp, ret);
6757 Perl_dirp_dup(pTHX_ DIR *dp)
6766 Perl_gp_dup(pTHX_ GP *gp)
6771 /* look for it in the table first */
6772 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6776 /* create anew and remember what it is */
6777 Newz(0, ret, 1, GP);
6778 ptr_table_store(PL_ptr_table, gp, ret);
6781 ret->gp_refcnt = 0; /* must be before any other dups! */
6782 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6783 ret->gp_io = io_dup_inc(gp->gp_io);
6784 ret->gp_form = cv_dup_inc(gp->gp_form);
6785 ret->gp_av = av_dup_inc(gp->gp_av);
6786 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6787 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6788 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6789 ret->gp_cvgen = gp->gp_cvgen;
6790 ret->gp_flags = gp->gp_flags;
6791 ret->gp_line = gp->gp_line;
6792 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6797 Perl_mg_dup(pTHX_ MAGIC *mg)
6799 MAGIC *mgret = (MAGIC*)NULL;
6802 return (MAGIC*)NULL;
6803 /* look for it in the table first */
6804 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6808 for (; mg; mg = mg->mg_moremagic) {
6810 Newz(0, nmg, 1, MAGIC);
6814 mgprev->mg_moremagic = nmg;
6815 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6816 nmg->mg_private = mg->mg_private;
6817 nmg->mg_type = mg->mg_type;
6818 nmg->mg_flags = mg->mg_flags;
6819 if (mg->mg_type == 'r') {
6820 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6823 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6824 ? sv_dup_inc(mg->mg_obj)
6825 : sv_dup(mg->mg_obj);
6827 nmg->mg_len = mg->mg_len;
6828 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6829 if (mg->mg_ptr && mg->mg_type != 'g') {
6830 if (mg->mg_len >= 0) {
6831 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6832 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6833 AMT *amtp = (AMT*)mg->mg_ptr;
6834 AMT *namtp = (AMT*)nmg->mg_ptr;
6836 for (i = 1; i < NofAMmeth; i++) {
6837 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6841 else if (mg->mg_len == HEf_SVKEY)
6842 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6850 Perl_ptr_table_new(pTHX)
6853 Newz(0, tbl, 1, PTR_TBL_t);
6856 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6861 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6863 PTR_TBL_ENT_t *tblent;
6864 UV hash = PTR2UV(sv);
6866 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6867 for (; tblent; tblent = tblent->next) {
6868 if (tblent->oldval == sv)
6869 return tblent->newval;
6875 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6877 PTR_TBL_ENT_t *tblent, **otblent;
6878 /* XXX this may be pessimal on platforms where pointers aren't good
6879 * hash values e.g. if they grow faster in the most significant
6881 UV hash = PTR2UV(oldv);
6885 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6886 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6887 if (tblent->oldval == oldv) {
6888 tblent->newval = newv;
6893 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6894 tblent->oldval = oldv;
6895 tblent->newval = newv;
6896 tblent->next = *otblent;
6899 if (i && tbl->tbl_items > tbl->tbl_max)
6900 ptr_table_split(tbl);
6904 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6906 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6907 UV oldsize = tbl->tbl_max + 1;
6908 UV newsize = oldsize * 2;
6911 Renew(ary, newsize, PTR_TBL_ENT_t*);
6912 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6913 tbl->tbl_max = --newsize;
6915 for (i=0; i < oldsize; i++, ary++) {
6916 PTR_TBL_ENT_t **curentp, **entp, *ent;
6919 curentp = ary + oldsize;
6920 for (entp = ary, ent = *ary; ent; ent = *entp) {
6921 if ((newsize & PTR2UV(ent->oldval)) != i) {
6923 ent->next = *curentp;
6938 Perl_sv_dup(pTHX_ SV *sstr)
6942 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6944 /* look for it in the table first */
6945 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6949 /* create anew and remember what it is */
6951 ptr_table_store(PL_ptr_table, sstr, dstr);
6954 SvFLAGS(dstr) = SvFLAGS(sstr);
6955 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6956 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6959 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6960 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6961 PL_watch_pvx, SvPVX(sstr));
6964 switch (SvTYPE(sstr)) {
6969 SvANY(dstr) = new_XIV();
6970 SvIVX(dstr) = SvIVX(sstr);
6973 SvANY(dstr) = new_XNV();
6974 SvNVX(dstr) = SvNVX(sstr);
6977 SvANY(dstr) = new_XRV();
6978 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6981 SvANY(dstr) = new_XPV();
6982 SvCUR(dstr) = SvCUR(sstr);
6983 SvLEN(dstr) = SvLEN(sstr);
6985 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6986 else if (SvPVX(sstr) && SvLEN(sstr))
6987 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6989 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6992 SvANY(dstr) = new_XPVIV();
6993 SvCUR(dstr) = SvCUR(sstr);
6994 SvLEN(dstr) = SvLEN(sstr);
6995 SvIVX(dstr) = SvIVX(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_XPVNV();
7005 SvCUR(dstr) = SvCUR(sstr);
7006 SvLEN(dstr) = SvLEN(sstr);
7007 SvIVX(dstr) = SvIVX(sstr);
7008 SvNVX(dstr) = SvNVX(sstr);
7010 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7011 else if (SvPVX(sstr) && SvLEN(sstr))
7012 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7014 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7017 SvANY(dstr) = new_XPVMG();
7018 SvCUR(dstr) = SvCUR(sstr);
7019 SvLEN(dstr) = SvLEN(sstr);
7020 SvIVX(dstr) = SvIVX(sstr);
7021 SvNVX(dstr) = SvNVX(sstr);
7022 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7023 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7025 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7026 else if (SvPVX(sstr) && SvLEN(sstr))
7027 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7029 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7032 SvANY(dstr) = new_XPVBM();
7033 SvCUR(dstr) = SvCUR(sstr);
7034 SvLEN(dstr) = SvLEN(sstr);
7035 SvIVX(dstr) = SvIVX(sstr);
7036 SvNVX(dstr) = SvNVX(sstr);
7037 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7038 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7040 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7041 else if (SvPVX(sstr) && SvLEN(sstr))
7042 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7044 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7045 BmRARE(dstr) = BmRARE(sstr);
7046 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7047 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7050 SvANY(dstr) = new_XPVLV();
7051 SvCUR(dstr) = SvCUR(sstr);
7052 SvLEN(dstr) = SvLEN(sstr);
7053 SvIVX(dstr) = SvIVX(sstr);
7054 SvNVX(dstr) = SvNVX(sstr);
7055 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7056 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7058 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7059 else if (SvPVX(sstr) && SvLEN(sstr))
7060 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7062 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7063 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7064 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7065 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7066 LvTYPE(dstr) = LvTYPE(sstr);
7069 SvANY(dstr) = new_XPVGV();
7070 SvCUR(dstr) = SvCUR(sstr);
7071 SvLEN(dstr) = SvLEN(sstr);
7072 SvIVX(dstr) = SvIVX(sstr);
7073 SvNVX(dstr) = SvNVX(sstr);
7074 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7075 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7077 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7078 else if (SvPVX(sstr) && SvLEN(sstr))
7079 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7081 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7082 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7083 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7084 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7085 GvFLAGS(dstr) = GvFLAGS(sstr);
7086 GvGP(dstr) = gp_dup(GvGP(sstr));
7087 (void)GpREFCNT_inc(GvGP(dstr));
7090 SvANY(dstr) = new_XPVIO();
7091 SvCUR(dstr) = SvCUR(sstr);
7092 SvLEN(dstr) = SvLEN(sstr);
7093 SvIVX(dstr) = SvIVX(sstr);
7094 SvNVX(dstr) = SvNVX(sstr);
7095 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7096 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7098 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7099 else if (SvPVX(sstr) && SvLEN(sstr))
7100 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7102 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7103 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7104 if (IoOFP(sstr) == IoIFP(sstr))
7105 IoOFP(dstr) = IoIFP(dstr);
7107 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7108 /* PL_rsfp_filters entries have fake IoDIRP() */
7109 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7110 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7112 IoDIRP(dstr) = IoDIRP(sstr);
7113 IoLINES(dstr) = IoLINES(sstr);
7114 IoPAGE(dstr) = IoPAGE(sstr);
7115 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7116 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7117 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7118 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7119 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7120 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7121 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7122 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7123 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7124 IoTYPE(dstr) = IoTYPE(sstr);
7125 IoFLAGS(dstr) = IoFLAGS(sstr);
7128 SvANY(dstr) = new_XPVAV();
7129 SvCUR(dstr) = SvCUR(sstr);
7130 SvLEN(dstr) = SvLEN(sstr);
7131 SvIVX(dstr) = SvIVX(sstr);
7132 SvNVX(dstr) = SvNVX(sstr);
7133 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7134 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7135 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7136 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7137 if (AvARRAY((AV*)sstr)) {
7138 SV **dst_ary, **src_ary;
7139 SSize_t items = AvFILLp((AV*)sstr) + 1;
7141 src_ary = AvARRAY((AV*)sstr);
7142 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7143 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7144 SvPVX(dstr) = (char*)dst_ary;
7145 AvALLOC((AV*)dstr) = dst_ary;
7146 if (AvREAL((AV*)sstr)) {
7148 *dst_ary++ = sv_dup_inc(*src_ary++);
7152 *dst_ary++ = sv_dup(*src_ary++);
7154 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7155 while (items-- > 0) {
7156 *dst_ary++ = &PL_sv_undef;
7160 SvPVX(dstr) = Nullch;
7161 AvALLOC((AV*)dstr) = (SV**)NULL;
7165 SvANY(dstr) = new_XPVHV();
7166 SvCUR(dstr) = SvCUR(sstr);
7167 SvLEN(dstr) = SvLEN(sstr);
7168 SvIVX(dstr) = SvIVX(sstr);
7169 SvNVX(dstr) = SvNVX(sstr);
7170 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7171 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7172 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7173 if (HvARRAY((HV*)sstr)) {
7175 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7176 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7177 Newz(0, dxhv->xhv_array,
7178 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7179 while (i <= sxhv->xhv_max) {
7180 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7181 !!HvSHAREKEYS(sstr));
7184 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7187 SvPVX(dstr) = Nullch;
7188 HvEITER((HV*)dstr) = (HE*)NULL;
7190 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7191 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7194 SvANY(dstr) = new_XPVFM();
7195 FmLINES(dstr) = FmLINES(sstr);
7199 SvANY(dstr) = new_XPVCV();
7201 SvCUR(dstr) = SvCUR(sstr);
7202 SvLEN(dstr) = SvLEN(sstr);
7203 SvIVX(dstr) = SvIVX(sstr);
7204 SvNVX(dstr) = SvNVX(sstr);
7205 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7206 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7207 if (SvPVX(sstr) && SvLEN(sstr))
7208 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7210 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7211 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7212 CvSTART(dstr) = CvSTART(sstr);
7213 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7214 CvXSUB(dstr) = CvXSUB(sstr);
7215 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7216 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7217 CvDEPTH(dstr) = CvDEPTH(sstr);
7218 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7219 /* XXX padlists are real, but pretend to be not */
7220 AvREAL_on(CvPADLIST(sstr));
7221 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7222 AvREAL_off(CvPADLIST(sstr));
7223 AvREAL_off(CvPADLIST(dstr));
7226 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7227 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7228 CvFLAGS(dstr) = CvFLAGS(sstr);
7231 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7235 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7242 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7247 return (PERL_CONTEXT*)NULL;
7249 /* look for it in the table first */
7250 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7254 /* create anew and remember what it is */
7255 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7256 ptr_table_store(PL_ptr_table, cxs, ncxs);
7259 PERL_CONTEXT *cx = &cxs[ix];
7260 PERL_CONTEXT *ncx = &ncxs[ix];
7261 ncx->cx_type = cx->cx_type;
7262 if (CxTYPE(cx) == CXt_SUBST) {
7263 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7266 ncx->blk_oldsp = cx->blk_oldsp;
7267 ncx->blk_oldcop = cx->blk_oldcop;
7268 ncx->blk_oldretsp = cx->blk_oldretsp;
7269 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7270 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7271 ncx->blk_oldpm = cx->blk_oldpm;
7272 ncx->blk_gimme = cx->blk_gimme;
7273 switch (CxTYPE(cx)) {
7275 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7276 ? cv_dup_inc(cx->blk_sub.cv)
7277 : cv_dup(cx->blk_sub.cv));
7278 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7279 ? av_dup_inc(cx->blk_sub.argarray)
7281 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7282 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7283 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7284 ncx->blk_sub.lval = cx->blk_sub.lval;
7287 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7288 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7289 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7290 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7291 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7294 ncx->blk_loop.label = cx->blk_loop.label;
7295 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7296 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7297 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7298 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7299 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7300 ? cx->blk_loop.iterdata
7301 : gv_dup((GV*)cx->blk_loop.iterdata));
7302 ncx->blk_loop.oldcurpad
7303 = (SV**)ptr_table_fetch(PL_ptr_table,
7304 cx->blk_loop.oldcurpad);
7305 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7306 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7307 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7308 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7309 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7312 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7313 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7314 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7315 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7328 Perl_si_dup(pTHX_ PERL_SI *si)
7333 return (PERL_SI*)NULL;
7335 /* look for it in the table first */
7336 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7340 /* create anew and remember what it is */
7341 Newz(56, nsi, 1, PERL_SI);
7342 ptr_table_store(PL_ptr_table, si, nsi);
7344 nsi->si_stack = av_dup_inc(si->si_stack);
7345 nsi->si_cxix = si->si_cxix;
7346 nsi->si_cxmax = si->si_cxmax;
7347 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7348 nsi->si_type = si->si_type;
7349 nsi->si_prev = si_dup(si->si_prev);
7350 nsi->si_next = si_dup(si->si_next);
7351 nsi->si_markoff = si->si_markoff;
7356 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7357 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7358 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7359 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7360 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7361 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7362 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7363 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7364 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7365 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7366 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7367 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7370 #define pv_dup_inc(p) SAVEPV(p)
7371 #define pv_dup(p) SAVEPV(p)
7372 #define svp_dup_inc(p,pp) any_dup(p,pp)
7375 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7382 /* look for it in the table first */
7383 ret = ptr_table_fetch(PL_ptr_table, v);
7387 /* see if it is part of the interpreter structure */
7388 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7389 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7397 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7399 ANY *ss = proto_perl->Tsavestack;
7400 I32 ix = proto_perl->Tsavestack_ix;
7401 I32 max = proto_perl->Tsavestack_max;
7414 void (*dptr) (void*);
7415 void (*dxptr) (pTHXo_ void*);
7418 Newz(54, nss, max, ANY);
7424 case SAVEt_ITEM: /* normal string */
7425 sv = (SV*)POPPTR(ss,ix);
7426 TOPPTR(nss,ix) = sv_dup_inc(sv);
7427 sv = (SV*)POPPTR(ss,ix);
7428 TOPPTR(nss,ix) = sv_dup_inc(sv);
7430 case SAVEt_SV: /* scalar reference */
7431 sv = (SV*)POPPTR(ss,ix);
7432 TOPPTR(nss,ix) = sv_dup_inc(sv);
7433 gv = (GV*)POPPTR(ss,ix);
7434 TOPPTR(nss,ix) = gv_dup_inc(gv);
7436 case SAVEt_GENERIC_PVREF: /* generic char* */
7437 c = (char*)POPPTR(ss,ix);
7438 TOPPTR(nss,ix) = pv_dup(c);
7439 ptr = POPPTR(ss,ix);
7440 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7442 case SAVEt_GENERIC_SVREF: /* generic sv */
7443 case SAVEt_SVREF: /* scalar reference */
7444 sv = (SV*)POPPTR(ss,ix);
7445 TOPPTR(nss,ix) = sv_dup_inc(sv);
7446 ptr = POPPTR(ss,ix);
7447 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7449 case SAVEt_AV: /* array reference */
7450 av = (AV*)POPPTR(ss,ix);
7451 TOPPTR(nss,ix) = av_dup_inc(av);
7452 gv = (GV*)POPPTR(ss,ix);
7453 TOPPTR(nss,ix) = gv_dup(gv);
7455 case SAVEt_HV: /* hash reference */
7456 hv = (HV*)POPPTR(ss,ix);
7457 TOPPTR(nss,ix) = hv_dup_inc(hv);
7458 gv = (GV*)POPPTR(ss,ix);
7459 TOPPTR(nss,ix) = gv_dup(gv);
7461 case SAVEt_INT: /* int reference */
7462 ptr = POPPTR(ss,ix);
7463 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7464 intval = (int)POPINT(ss,ix);
7465 TOPINT(nss,ix) = intval;
7467 case SAVEt_LONG: /* long reference */
7468 ptr = POPPTR(ss,ix);
7469 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7470 longval = (long)POPLONG(ss,ix);
7471 TOPLONG(nss,ix) = longval;
7473 case SAVEt_I32: /* I32 reference */
7474 case SAVEt_I16: /* I16 reference */
7475 case SAVEt_I8: /* I8 reference */
7476 ptr = POPPTR(ss,ix);
7477 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7481 case SAVEt_IV: /* IV reference */
7482 ptr = POPPTR(ss,ix);
7483 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7487 case SAVEt_SPTR: /* SV* reference */
7488 ptr = POPPTR(ss,ix);
7489 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7490 sv = (SV*)POPPTR(ss,ix);
7491 TOPPTR(nss,ix) = sv_dup(sv);
7493 case SAVEt_VPTR: /* random* reference */
7494 ptr = POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7496 ptr = POPPTR(ss,ix);
7497 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7499 case SAVEt_PPTR: /* char* reference */
7500 ptr = POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7502 c = (char*)POPPTR(ss,ix);
7503 TOPPTR(nss,ix) = pv_dup(c);
7505 case SAVEt_HPTR: /* HV* reference */
7506 ptr = POPPTR(ss,ix);
7507 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7508 hv = (HV*)POPPTR(ss,ix);
7509 TOPPTR(nss,ix) = hv_dup(hv);
7511 case SAVEt_APTR: /* AV* reference */
7512 ptr = POPPTR(ss,ix);
7513 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7514 av = (AV*)POPPTR(ss,ix);
7515 TOPPTR(nss,ix) = av_dup(av);
7518 gv = (GV*)POPPTR(ss,ix);
7519 TOPPTR(nss,ix) = gv_dup(gv);
7521 case SAVEt_GP: /* scalar reference */
7522 gp = (GP*)POPPTR(ss,ix);
7523 TOPPTR(nss,ix) = gp = gp_dup(gp);
7524 (void)GpREFCNT_inc(gp);
7525 gv = (GV*)POPPTR(ss,ix);
7526 TOPPTR(nss,ix) = gv_dup_inc(c);
7527 c = (char*)POPPTR(ss,ix);
7528 TOPPTR(nss,ix) = pv_dup(c);
7535 sv = (SV*)POPPTR(ss,ix);
7536 TOPPTR(nss,ix) = sv_dup_inc(sv);
7539 ptr = POPPTR(ss,ix);
7540 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7541 /* these are assumed to be refcounted properly */
7542 switch (((OP*)ptr)->op_type) {
7549 TOPPTR(nss,ix) = ptr;
7554 TOPPTR(nss,ix) = Nullop;
7559 TOPPTR(nss,ix) = Nullop;
7562 c = (char*)POPPTR(ss,ix);
7563 TOPPTR(nss,ix) = pv_dup_inc(c);
7566 longval = POPLONG(ss,ix);
7567 TOPLONG(nss,ix) = longval;
7570 hv = (HV*)POPPTR(ss,ix);
7571 TOPPTR(nss,ix) = hv_dup_inc(hv);
7572 c = (char*)POPPTR(ss,ix);
7573 TOPPTR(nss,ix) = pv_dup_inc(c);
7577 case SAVEt_DESTRUCTOR:
7578 ptr = POPPTR(ss,ix);
7579 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7580 dptr = POPDPTR(ss,ix);
7581 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7583 case SAVEt_DESTRUCTOR_X:
7584 ptr = POPPTR(ss,ix);
7585 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7586 dxptr = POPDXPTR(ss,ix);
7587 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7589 case SAVEt_REGCONTEXT:
7595 case SAVEt_STACK_POS: /* Position on Perl stack */
7599 case SAVEt_AELEM: /* array element */
7600 sv = (SV*)POPPTR(ss,ix);
7601 TOPPTR(nss,ix) = sv_dup_inc(sv);
7604 av = (AV*)POPPTR(ss,ix);
7605 TOPPTR(nss,ix) = av_dup_inc(av);
7607 case SAVEt_HELEM: /* hash element */
7608 sv = (SV*)POPPTR(ss,ix);
7609 TOPPTR(nss,ix) = sv_dup_inc(sv);
7610 sv = (SV*)POPPTR(ss,ix);
7611 TOPPTR(nss,ix) = sv_dup_inc(sv);
7612 hv = (HV*)POPPTR(ss,ix);
7613 TOPPTR(nss,ix) = hv_dup_inc(hv);
7616 ptr = POPPTR(ss,ix);
7617 TOPPTR(nss,ix) = ptr;
7624 av = (AV*)POPPTR(ss,ix);
7625 TOPPTR(nss,ix) = av_dup(av);
7628 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7640 perl_clone(PerlInterpreter *proto_perl, UV flags)
7643 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7646 #ifdef PERL_IMPLICIT_SYS
7647 return perl_clone_using(proto_perl, flags,
7649 proto_perl->IMemShared,
7650 proto_perl->IMemParse,
7660 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7661 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7662 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7663 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7664 struct IPerlDir* ipD, struct IPerlSock* ipS,
7665 struct IPerlProc* ipP)
7667 /* XXX many of the string copies here can be optimized if they're
7668 * constants; they need to be allocated as common memory and just
7669 * their pointers copied. */
7673 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7675 PERL_SET_THX(pPerl);
7676 # else /* !PERL_OBJECT */
7677 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7678 PERL_SET_THX(my_perl);
7681 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7686 # else /* !DEBUGGING */
7687 Zero(my_perl, 1, PerlInterpreter);
7688 # endif /* DEBUGGING */
7692 PL_MemShared = ipMS;
7700 # endif /* PERL_OBJECT */
7701 #else /* !PERL_IMPLICIT_SYS */
7703 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7704 PERL_SET_THX(my_perl);
7707 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7712 # else /* !DEBUGGING */
7713 Zero(my_perl, 1, PerlInterpreter);
7714 # endif /* DEBUGGING */
7715 #endif /* PERL_IMPLICIT_SYS */
7718 PL_xiv_arenaroot = NULL;
7720 PL_xnv_arenaroot = NULL;
7722 PL_xrv_arenaroot = NULL;
7724 PL_xpv_arenaroot = NULL;
7726 PL_xpviv_arenaroot = NULL;
7727 PL_xpviv_root = NULL;
7728 PL_xpvnv_arenaroot = NULL;
7729 PL_xpvnv_root = NULL;
7730 PL_xpvcv_arenaroot = NULL;
7731 PL_xpvcv_root = NULL;
7732 PL_xpvav_arenaroot = NULL;
7733 PL_xpvav_root = NULL;
7734 PL_xpvhv_arenaroot = NULL;
7735 PL_xpvhv_root = NULL;
7736 PL_xpvmg_arenaroot = NULL;
7737 PL_xpvmg_root = NULL;
7738 PL_xpvlv_arenaroot = NULL;
7739 PL_xpvlv_root = NULL;
7740 PL_xpvbm_arenaroot = NULL;
7741 PL_xpvbm_root = NULL;
7742 PL_he_arenaroot = NULL;
7744 PL_nice_chunk = NULL;
7745 PL_nice_chunk_size = 0;
7748 PL_sv_root = Nullsv;
7749 PL_sv_arenaroot = Nullsv;
7751 PL_debug = proto_perl->Idebug;
7753 /* create SV map for pointer relocation */
7754 PL_ptr_table = ptr_table_new();
7756 /* initialize these special pointers as early as possible */
7757 SvANY(&PL_sv_undef) = NULL;
7758 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7759 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7760 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7763 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7765 SvANY(&PL_sv_no) = new_XPVNV();
7767 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7768 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7769 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7770 SvCUR(&PL_sv_no) = 0;
7771 SvLEN(&PL_sv_no) = 1;
7772 SvNVX(&PL_sv_no) = 0;
7773 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7776 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7778 SvANY(&PL_sv_yes) = new_XPVNV();
7780 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7781 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7782 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7783 SvCUR(&PL_sv_yes) = 1;
7784 SvLEN(&PL_sv_yes) = 2;
7785 SvNVX(&PL_sv_yes) = 1;
7786 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7788 /* create shared string table */
7789 PL_strtab = newHV();
7790 HvSHAREKEYS_off(PL_strtab);
7791 hv_ksplit(PL_strtab, 512);
7792 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7794 PL_compiling = proto_perl->Icompiling;
7795 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7796 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7797 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7798 if (!specialWARN(PL_compiling.cop_warnings))
7799 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7800 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7802 /* pseudo environmental stuff */
7803 PL_origargc = proto_perl->Iorigargc;
7805 New(0, PL_origargv, i+1, char*);
7806 PL_origargv[i] = '\0';
7808 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7810 PL_envgv = gv_dup(proto_perl->Ienvgv);
7811 PL_incgv = gv_dup(proto_perl->Iincgv);
7812 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7813 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7814 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7815 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7818 PL_minus_c = proto_perl->Iminus_c;
7819 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7820 PL_localpatches = proto_perl->Ilocalpatches;
7821 PL_splitstr = proto_perl->Isplitstr;
7822 PL_preprocess = proto_perl->Ipreprocess;
7823 PL_minus_n = proto_perl->Iminus_n;
7824 PL_minus_p = proto_perl->Iminus_p;
7825 PL_minus_l = proto_perl->Iminus_l;
7826 PL_minus_a = proto_perl->Iminus_a;
7827 PL_minus_F = proto_perl->Iminus_F;
7828 PL_doswitches = proto_perl->Idoswitches;
7829 PL_dowarn = proto_perl->Idowarn;
7830 PL_doextract = proto_perl->Idoextract;
7831 PL_sawampersand = proto_perl->Isawampersand;
7832 PL_unsafe = proto_perl->Iunsafe;
7833 PL_inplace = SAVEPV(proto_perl->Iinplace);
7834 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7835 PL_perldb = proto_perl->Iperldb;
7836 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7838 /* magical thingies */
7839 /* XXX time(&PL_basetime) when asked for? */
7840 PL_basetime = proto_perl->Ibasetime;
7841 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7843 PL_maxsysfd = proto_perl->Imaxsysfd;
7844 PL_multiline = proto_perl->Imultiline;
7845 PL_statusvalue = proto_perl->Istatusvalue;
7847 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7850 /* shortcuts to various I/O objects */
7851 PL_stdingv = gv_dup(proto_perl->Istdingv);
7852 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7853 PL_defgv = gv_dup(proto_perl->Idefgv);
7854 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7855 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7856 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7858 /* shortcuts to regexp stuff */
7859 PL_replgv = gv_dup(proto_perl->Ireplgv);
7861 /* shortcuts to misc objects */
7862 PL_errgv = gv_dup(proto_perl->Ierrgv);
7864 /* shortcuts to debugging objects */
7865 PL_DBgv = gv_dup(proto_perl->IDBgv);
7866 PL_DBline = gv_dup(proto_perl->IDBline);
7867 PL_DBsub = gv_dup(proto_perl->IDBsub);
7868 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7869 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7870 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7871 PL_lineary = av_dup(proto_perl->Ilineary);
7872 PL_dbargs = av_dup(proto_perl->Idbargs);
7875 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7876 PL_curstash = hv_dup(proto_perl->Tcurstash);
7877 PL_debstash = hv_dup(proto_perl->Idebstash);
7878 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7879 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7881 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7882 PL_endav = av_dup_inc(proto_perl->Iendav);
7883 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7884 PL_initav = av_dup_inc(proto_perl->Iinitav);
7886 PL_sub_generation = proto_perl->Isub_generation;
7888 /* funky return mechanisms */
7889 PL_forkprocess = proto_perl->Iforkprocess;
7891 /* subprocess state */
7892 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7894 /* internal state */
7895 PL_tainting = proto_perl->Itainting;
7896 PL_maxo = proto_perl->Imaxo;
7897 if (proto_perl->Iop_mask)
7898 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7900 PL_op_mask = Nullch;
7902 /* current interpreter roots */
7903 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7904 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7905 PL_main_start = proto_perl->Imain_start;
7906 PL_eval_root = proto_perl->Ieval_root;
7907 PL_eval_start = proto_perl->Ieval_start;
7909 /* runtime control stuff */
7910 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7911 PL_copline = proto_perl->Icopline;
7913 PL_filemode = proto_perl->Ifilemode;
7914 PL_lastfd = proto_perl->Ilastfd;
7915 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7918 PL_gensym = proto_perl->Igensym;
7919 PL_preambled = proto_perl->Ipreambled;
7920 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7921 PL_laststatval = proto_perl->Ilaststatval;
7922 PL_laststype = proto_perl->Ilaststype;
7923 PL_mess_sv = Nullsv;
7925 PL_orslen = proto_perl->Iorslen;
7926 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7927 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7929 /* interpreter atexit processing */
7930 PL_exitlistlen = proto_perl->Iexitlistlen;
7931 if (PL_exitlistlen) {
7932 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7933 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7936 PL_exitlist = (PerlExitListEntry*)NULL;
7937 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7939 PL_profiledata = NULL;
7940 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7941 /* PL_rsfp_filters entries have fake IoDIRP() */
7942 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7944 PL_compcv = cv_dup(proto_perl->Icompcv);
7945 PL_comppad = av_dup(proto_perl->Icomppad);
7946 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7947 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7948 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7949 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7950 proto_perl->Tcurpad);
7952 #ifdef HAVE_INTERP_INTERN
7953 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7956 /* more statics moved here */
7957 PL_generation = proto_perl->Igeneration;
7958 PL_DBcv = cv_dup(proto_perl->IDBcv);
7960 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7961 PL_in_clean_all = proto_perl->Iin_clean_all;
7963 PL_uid = proto_perl->Iuid;
7964 PL_euid = proto_perl->Ieuid;
7965 PL_gid = proto_perl->Igid;
7966 PL_egid = proto_perl->Iegid;
7967 PL_nomemok = proto_perl->Inomemok;
7968 PL_an = proto_perl->Ian;
7969 PL_cop_seqmax = proto_perl->Icop_seqmax;
7970 PL_op_seqmax = proto_perl->Iop_seqmax;
7971 PL_evalseq = proto_perl->Ievalseq;
7972 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7973 PL_origalen = proto_perl->Iorigalen;
7974 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7975 PL_osname = SAVEPV(proto_perl->Iosname);
7976 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7977 PL_sighandlerp = proto_perl->Isighandlerp;
7980 PL_runops = proto_perl->Irunops;
7982 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7985 PL_cshlen = proto_perl->Icshlen;
7986 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7989 PL_lex_state = proto_perl->Ilex_state;
7990 PL_lex_defer = proto_perl->Ilex_defer;
7991 PL_lex_expect = proto_perl->Ilex_expect;
7992 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7993 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7994 PL_lex_starts = proto_perl->Ilex_starts;
7995 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7996 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7997 PL_lex_op = proto_perl->Ilex_op;
7998 PL_lex_inpat = proto_perl->Ilex_inpat;
7999 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8000 PL_lex_brackets = proto_perl->Ilex_brackets;
8001 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8002 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8003 PL_lex_casemods = proto_perl->Ilex_casemods;
8004 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8005 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8007 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8008 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8009 PL_nexttoke = proto_perl->Inexttoke;
8011 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8012 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8013 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8014 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8015 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8016 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8017 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8018 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8019 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8020 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8021 PL_pending_ident = proto_perl->Ipending_ident;
8022 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8024 PL_expect = proto_perl->Iexpect;
8026 PL_multi_start = proto_perl->Imulti_start;
8027 PL_multi_end = proto_perl->Imulti_end;
8028 PL_multi_open = proto_perl->Imulti_open;
8029 PL_multi_close = proto_perl->Imulti_close;
8031 PL_error_count = proto_perl->Ierror_count;
8032 PL_subline = proto_perl->Isubline;
8033 PL_subname = sv_dup_inc(proto_perl->Isubname);
8035 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8036 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8037 PL_padix = proto_perl->Ipadix;
8038 PL_padix_floor = proto_perl->Ipadix_floor;
8039 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8041 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8042 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8043 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8044 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8045 PL_last_lop_op = proto_perl->Ilast_lop_op;
8046 PL_in_my = proto_perl->Iin_my;
8047 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8049 PL_cryptseen = proto_perl->Icryptseen;
8052 PL_hints = proto_perl->Ihints;
8054 PL_amagic_generation = proto_perl->Iamagic_generation;
8056 #ifdef USE_LOCALE_COLLATE
8057 PL_collation_ix = proto_perl->Icollation_ix;
8058 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8059 PL_collation_standard = proto_perl->Icollation_standard;
8060 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8061 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8062 #endif /* USE_LOCALE_COLLATE */
8064 #ifdef USE_LOCALE_NUMERIC
8065 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8066 PL_numeric_standard = proto_perl->Inumeric_standard;
8067 PL_numeric_local = proto_perl->Inumeric_local;
8068 PL_numeric_radix = proto_perl->Inumeric_radix;
8069 #endif /* !USE_LOCALE_NUMERIC */
8071 /* utf8 character classes */
8072 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8073 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8074 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8075 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8076 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8077 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8078 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8079 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8080 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8081 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8082 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8083 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8084 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8085 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8086 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8087 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8088 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8091 PL_last_swash_hv = Nullhv; /* reinits on demand */
8092 PL_last_swash_klen = 0;
8093 PL_last_swash_key[0]= '\0';
8094 PL_last_swash_tmps = (U8*)NULL;
8095 PL_last_swash_slen = 0;
8097 /* perly.c globals */
8098 PL_yydebug = proto_perl->Iyydebug;
8099 PL_yynerrs = proto_perl->Iyynerrs;
8100 PL_yyerrflag = proto_perl->Iyyerrflag;
8101 PL_yychar = proto_perl->Iyychar;
8102 PL_yyval = proto_perl->Iyyval;
8103 PL_yylval = proto_perl->Iyylval;
8105 PL_glob_index = proto_perl->Iglob_index;
8106 PL_srand_called = proto_perl->Isrand_called;
8107 PL_uudmap['M'] = 0; /* reinits on demand */
8108 PL_bitcount = Nullch; /* reinits on demand */
8110 if (proto_perl->Ipsig_ptr) {
8111 int sig_num[] = { SIG_NUM };
8112 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8113 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8114 for (i = 1; PL_sig_name[i]; i++) {
8115 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8116 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8120 PL_psig_ptr = (SV**)NULL;
8121 PL_psig_name = (SV**)NULL;
8124 /* thrdvar.h stuff */
8127 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8128 PL_tmps_ix = proto_perl->Ttmps_ix;
8129 PL_tmps_max = proto_perl->Ttmps_max;
8130 PL_tmps_floor = proto_perl->Ttmps_floor;
8131 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8133 while (i <= PL_tmps_ix) {
8134 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8138 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8139 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8140 Newz(54, PL_markstack, i, I32);
8141 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8142 - proto_perl->Tmarkstack);
8143 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8144 - proto_perl->Tmarkstack);
8145 Copy(proto_perl->Tmarkstack, PL_markstack,
8146 PL_markstack_ptr - PL_markstack + 1, I32);
8148 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8149 * NOTE: unlike the others! */
8150 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8151 PL_scopestack_max = proto_perl->Tscopestack_max;
8152 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8153 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8155 /* next push_return() sets PL_retstack[PL_retstack_ix]
8156 * NOTE: unlike the others! */
8157 PL_retstack_ix = proto_perl->Tretstack_ix;
8158 PL_retstack_max = proto_perl->Tretstack_max;
8159 Newz(54, PL_retstack, PL_retstack_max, OP*);
8160 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8162 /* NOTE: si_dup() looks at PL_markstack */
8163 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8165 /* PL_curstack = PL_curstackinfo->si_stack; */
8166 PL_curstack = av_dup(proto_perl->Tcurstack);
8167 PL_mainstack = av_dup(proto_perl->Tmainstack);
8169 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8170 PL_stack_base = AvARRAY(PL_curstack);
8171 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8172 - proto_perl->Tstack_base);
8173 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8175 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8176 * NOTE: unlike the others! */
8177 PL_savestack_ix = proto_perl->Tsavestack_ix;
8178 PL_savestack_max = proto_perl->Tsavestack_max;
8179 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8180 PL_savestack = ss_dup(proto_perl);
8184 ENTER; /* perl_destruct() wants to LEAVE; */
8187 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8188 PL_top_env = &PL_start_env;
8190 PL_op = proto_perl->Top;
8193 PL_Xpv = (XPV*)NULL;
8194 PL_na = proto_perl->Tna;
8196 PL_statbuf = proto_perl->Tstatbuf;
8197 PL_statcache = proto_perl->Tstatcache;
8198 PL_statgv = gv_dup(proto_perl->Tstatgv);
8199 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8201 PL_timesbuf = proto_perl->Ttimesbuf;
8204 PL_tainted = proto_perl->Ttainted;
8205 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8206 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8207 PL_rs = sv_dup_inc(proto_perl->Trs);
8208 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8209 PL_ofslen = proto_perl->Tofslen;
8210 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8211 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8212 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8213 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8214 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8215 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8217 PL_restartop = proto_perl->Trestartop;
8218 PL_in_eval = proto_perl->Tin_eval;
8219 PL_delaymagic = proto_perl->Tdelaymagic;
8220 PL_dirty = proto_perl->Tdirty;
8221 PL_localizing = proto_perl->Tlocalizing;
8223 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8224 PL_protect = proto_perl->Tprotect;
8226 PL_errors = sv_dup_inc(proto_perl->Terrors);
8227 PL_av_fetch_sv = Nullsv;
8228 PL_hv_fetch_sv = Nullsv;
8229 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8230 PL_modcount = proto_perl->Tmodcount;
8231 PL_lastgotoprobe = Nullop;
8232 PL_dumpindent = proto_perl->Tdumpindent;
8234 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8235 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8236 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8237 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8238 PL_sortcxix = proto_perl->Tsortcxix;
8239 PL_efloatbuf = Nullch; /* reinits on demand */
8240 PL_efloatsize = 0; /* reinits on demand */
8244 PL_screamfirst = NULL;
8245 PL_screamnext = NULL;
8246 PL_maxscream = -1; /* reinits on demand */
8247 PL_lastscream = Nullsv;
8249 PL_watchaddr = NULL;
8250 PL_watchok = Nullch;
8252 PL_regdummy = proto_perl->Tregdummy;
8253 PL_regcomp_parse = Nullch;
8254 PL_regxend = Nullch;
8255 PL_regcode = (regnode*)NULL;
8258 PL_regprecomp = Nullch;
8263 PL_seen_zerolen = 0;
8265 PL_regcomp_rx = (regexp*)NULL;
8267 PL_colorset = 0; /* reinits PL_colors[] */
8268 /*PL_colors[6] = {0,0,0,0,0,0};*/
8269 PL_reg_whilem_seen = 0;
8270 PL_reginput = Nullch;
8273 PL_regstartp = (I32*)NULL;
8274 PL_regendp = (I32*)NULL;
8275 PL_reglastparen = (U32*)NULL;
8276 PL_regtill = Nullch;
8278 PL_reg_start_tmp = (char**)NULL;
8279 PL_reg_start_tmpl = 0;
8280 PL_regdata = (struct reg_data*)NULL;
8283 PL_reg_eval_set = 0;
8285 PL_regprogram = (regnode*)NULL;
8287 PL_regcc = (CURCUR*)NULL;
8288 PL_reg_call_cc = (struct re_cc_state*)NULL;
8289 PL_reg_re = (regexp*)NULL;
8290 PL_reg_ganch = Nullch;
8292 PL_reg_magic = (MAGIC*)NULL;
8294 PL_reg_oldcurpm = (PMOP*)NULL;
8295 PL_reg_curpm = (PMOP*)NULL;
8296 PL_reg_oldsaved = Nullch;
8297 PL_reg_oldsavedlen = 0;
8299 PL_reg_leftiter = 0;
8300 PL_reg_poscache = Nullch;
8301 PL_reg_poscache_size= 0;
8303 /* RE engine - function pointers */
8304 PL_regcompp = proto_perl->Tregcompp;
8305 PL_regexecp = proto_perl->Tregexecp;
8306 PL_regint_start = proto_perl->Tregint_start;
8307 PL_regint_string = proto_perl->Tregint_string;
8308 PL_regfree = proto_perl->Tregfree;
8310 PL_reginterp_cnt = 0;
8311 PL_reg_starttry = 0;
8314 return (PerlInterpreter*)pPerl;
8320 #else /* !USE_ITHREADS */
8326 #endif /* USE_ITHREADS */
8329 do_report_used(pTHXo_ SV *sv)
8331 if (SvTYPE(sv) != SVTYPEMASK) {
8332 PerlIO_printf(Perl_debug_log, "****\n");
8338 do_clean_objs(pTHXo_ SV *sv)
8342 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8343 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8344 if (SvWEAKREF(sv)) {
8355 /* XXX Might want to check arrays, etc. */
8358 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8360 do_clean_named_objs(pTHXo_ SV *sv)
8362 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8363 if ( SvOBJECT(GvSV(sv)) ||
8364 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8365 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8366 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8367 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8369 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8377 do_clean_all(pTHXo_ SV *sv)
8379 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8380 SvFLAGS(sv) |= SVf_BREAK;