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)))
2749 /* ahem, death to those who redefine
2750 * active sort subs */
2751 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2752 PL_sortcop == CvSTART(cv))
2754 "Can't redefine active sort subroutine %s",
2755 GvENAME((GV*)dstr));
2756 /* Redefining a sub - warning is mandatory if
2757 it was a const and its value changed. */
2758 if (ckWARN(WARN_REDEFINE)
2760 && (!CvCONST((CV*)sref)
2761 || sv_cmp(cv_const_sv(cv),
2762 cv_const_sv((CV*)sref)))))
2764 Perl_warner(aTHX_ WARN_REDEFINE,
2766 ? "Constant subroutine %s redefined"
2767 : "Subroutine %s redefined",
2768 GvENAME((GV*)dstr));
2771 cv_ckproto(cv, (GV*)dstr,
2772 SvPOK(sref) ? SvPVX(sref) : Nullch);
2774 GvCV(dstr) = (CV*)sref;
2775 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2776 GvASSUMECV_on(dstr);
2777 PL_sub_generation++;
2779 if (!GvIMPORTED_CV(dstr)
2780 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2782 GvIMPORTED_CV_on(dstr);
2787 SAVESPTR(GvIOp(dstr));
2789 dref = (SV*)GvIOp(dstr);
2790 GvIOp(dstr) = (IO*)sref;
2794 SAVESPTR(GvFORM(dstr));
2796 dref = (SV*)GvFORM(dstr);
2797 GvFORM(dstr) = (CV*)sref;
2801 SAVESPTR(GvSV(dstr));
2803 dref = (SV*)GvSV(dstr);
2805 if (!GvIMPORTED_SV(dstr)
2806 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2808 GvIMPORTED_SV_on(dstr);
2820 (void)SvOOK_off(dstr); /* backoff */
2822 Safefree(SvPVX(dstr));
2823 SvLEN(dstr)=SvCUR(dstr)=0;
2826 (void)SvOK_off(dstr);
2827 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2829 if (sflags & SVp_NOK) {
2831 SvNVX(dstr) = SvNVX(sstr);
2833 if (sflags & SVp_IOK) {
2834 (void)SvIOK_on(dstr);
2835 SvIVX(dstr) = SvIVX(sstr);
2836 if (sflags & SVf_IVisUV)
2839 if (SvAMAGIC(sstr)) {
2843 else if (sflags & SVp_POK) {
2846 * Check to see if we can just swipe the string. If so, it's a
2847 * possible small lose on short strings, but a big win on long ones.
2848 * It might even be a win on short strings if SvPVX(dstr)
2849 * has to be allocated and SvPVX(sstr) has to be freed.
2852 if (SvTEMP(sstr) && /* slated for free anyway? */
2853 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2854 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2855 SvLEN(sstr)) /* and really is a string */
2857 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2859 SvFLAGS(dstr) &= ~SVf_OOK;
2860 Safefree(SvPVX(dstr) - SvIVX(dstr));
2862 else if (SvLEN(dstr))
2863 Safefree(SvPVX(dstr));
2865 (void)SvPOK_only(dstr);
2866 SvPV_set(dstr, SvPVX(sstr));
2867 SvLEN_set(dstr, SvLEN(sstr));
2868 SvCUR_set(dstr, SvCUR(sstr));
2871 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2872 SvPV_set(sstr, Nullch);
2877 else { /* have to copy actual string */
2878 STRLEN len = SvCUR(sstr);
2880 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2881 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2882 SvCUR_set(dstr, len);
2883 *SvEND(dstr) = '\0';
2884 (void)SvPOK_only(dstr);
2886 if ((sflags & SVf_UTF8) && !IN_BYTE)
2889 if (sflags & SVp_NOK) {
2891 SvNVX(dstr) = SvNVX(sstr);
2893 if (sflags & SVp_IOK) {
2894 (void)SvIOK_on(dstr);
2895 SvIVX(dstr) = SvIVX(sstr);
2896 if (sflags & SVf_IVisUV)
2900 else if (sflags & SVp_NOK) {
2901 SvNVX(dstr) = SvNVX(sstr);
2902 (void)SvNOK_only(dstr);
2903 if (sflags & SVf_IOK) {
2904 (void)SvIOK_on(dstr);
2905 SvIVX(dstr) = SvIVX(sstr);
2906 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2907 if (sflags & SVf_IVisUV)
2911 else if (sflags & SVp_IOK) {
2912 (void)SvIOK_only(dstr);
2913 SvIVX(dstr) = SvIVX(sstr);
2914 if (sflags & SVf_IVisUV)
2918 if (dtype == SVt_PVGV) {
2919 if (ckWARN(WARN_MISC))
2920 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2923 (void)SvOK_off(dstr);
2929 =for apidoc sv_setsv_mg
2931 Like C<sv_setsv>, but also handles 'set' magic.
2937 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2939 sv_setsv(dstr,sstr);
2944 =for apidoc sv_setpvn
2946 Copies a string into an SV. The C<len> parameter indicates the number of
2947 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2953 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2955 register char *dptr;
2956 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2957 elicit a warning, but it won't hurt. */
2958 SV_CHECK_THINKFIRST(sv);
2963 (void)SvUPGRADE(sv, SVt_PV);
2965 SvGROW(sv, len + 1);
2967 Move(ptr,dptr,len,char);
2970 (void)SvPOK_only(sv); /* validate pointer */
2975 =for apidoc sv_setpvn_mg
2977 Like C<sv_setpvn>, but also handles 'set' magic.
2983 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2985 sv_setpvn(sv,ptr,len);
2990 =for apidoc sv_setpv
2992 Copies a string into an SV. The string must be null-terminated. Does not
2993 handle 'set' magic. See C<sv_setpv_mg>.
2999 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3001 register STRLEN len;
3003 SV_CHECK_THINKFIRST(sv);
3009 (void)SvUPGRADE(sv, SVt_PV);
3011 SvGROW(sv, len + 1);
3012 Move(ptr,SvPVX(sv),len+1,char);
3014 (void)SvPOK_only(sv); /* validate pointer */
3019 =for apidoc sv_setpv_mg
3021 Like C<sv_setpv>, but also handles 'set' magic.
3027 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3034 =for apidoc sv_usepvn
3036 Tells an SV to use C<ptr> to find its string value. Normally the string is
3037 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3038 The C<ptr> should point to memory that was allocated by C<malloc>. The
3039 string length, C<len>, must be supplied. This function will realloc the
3040 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3041 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3042 See C<sv_usepvn_mg>.
3048 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3050 SV_CHECK_THINKFIRST(sv);
3051 (void)SvUPGRADE(sv, SVt_PV);
3056 (void)SvOOK_off(sv);
3057 if (SvPVX(sv) && SvLEN(sv))
3058 Safefree(SvPVX(sv));
3059 Renew(ptr, len+1, char);
3062 SvLEN_set(sv, len+1);
3064 (void)SvPOK_only(sv); /* validate pointer */
3069 =for apidoc sv_usepvn_mg
3071 Like C<sv_usepvn>, but also handles 'set' magic.
3077 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3079 sv_usepvn(sv,ptr,len);
3084 Perl_sv_force_normal(pTHX_ register SV *sv)
3086 if (SvREADONLY(sv)) {
3089 char *pvx = SvPVX(sv);
3090 STRLEN len = SvCUR(sv);
3091 U32 hash = SvUVX(sv);
3092 SvGROW(sv, len + 1);
3093 Move(pvx,SvPVX(sv),len,char);
3097 unsharepvn(pvx,len,hash);
3099 else if (PL_curcop != &PL_compiling)
3100 Perl_croak(aTHX_ PL_no_modify);
3104 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3111 Efficient removal of characters from the beginning of the string buffer.
3112 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3113 the string buffer. The C<ptr> becomes the first character of the adjusted
3120 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3124 register STRLEN delta;
3126 if (!ptr || !SvPOKp(sv))
3128 SV_CHECK_THINKFIRST(sv);
3129 if (SvTYPE(sv) < SVt_PVIV)
3130 sv_upgrade(sv,SVt_PVIV);
3133 if (!SvLEN(sv)) { /* make copy of shared string */
3134 char *pvx = SvPVX(sv);
3135 STRLEN len = SvCUR(sv);
3136 SvGROW(sv, len + 1);
3137 Move(pvx,SvPVX(sv),len,char);
3141 SvFLAGS(sv) |= SVf_OOK;
3143 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3144 delta = ptr - SvPVX(sv);
3152 =for apidoc sv_catpvn
3154 Concatenates the string onto the end of the string which is in the SV. The
3155 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3156 'set' magic. See C<sv_catpvn_mg>.
3162 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3167 junk = SvPV_force(sv, tlen);
3168 SvGROW(sv, tlen + len + 1);
3171 Move(ptr,SvPVX(sv)+tlen,len,char);
3174 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3179 =for apidoc sv_catpvn_mg
3181 Like C<sv_catpvn>, but also handles 'set' magic.
3187 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3189 sv_catpvn(sv,ptr,len);
3194 =for apidoc sv_catsv
3196 Concatenates the string from SV C<ssv> onto the end of the string in SV
3197 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3203 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3209 if ((s = SvPV(sstr, len))) {
3210 if (DO_UTF8(sstr)) {
3211 sv_utf8_upgrade(dstr);
3212 sv_catpvn(dstr,s,len);
3216 sv_catpvn(dstr,s,len);
3221 =for apidoc sv_catsv_mg
3223 Like C<sv_catsv>, but also handles 'set' magic.
3229 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3231 sv_catsv(dstr,sstr);
3236 =for apidoc sv_catpv
3238 Concatenates the string onto the end of the string which is in the SV.
3239 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3245 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3247 register STRLEN len;
3253 junk = SvPV_force(sv, tlen);
3255 SvGROW(sv, tlen + len + 1);
3258 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3260 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3265 =for apidoc sv_catpv_mg
3267 Like C<sv_catpv>, but also handles 'set' magic.
3273 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3280 Perl_newSV(pTHX_ STRLEN len)
3286 sv_upgrade(sv, SVt_PV);
3287 SvGROW(sv, len + 1);
3292 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3295 =for apidoc sv_magic
3297 Adds magic to an SV.
3303 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3307 if (SvREADONLY(sv)) {
3309 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3310 Perl_croak(aTHX_ PL_no_modify);
3312 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3313 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3320 (void)SvUPGRADE(sv, SVt_PVMG);
3322 Newz(702,mg, 1, MAGIC);
3323 mg->mg_moremagic = SvMAGIC(sv);
3326 if (!obj || obj == sv || how == '#' || how == 'r')
3330 mg->mg_obj = SvREFCNT_inc(obj);
3331 mg->mg_flags |= MGf_REFCOUNTED;
3334 mg->mg_len = namlen;
3337 mg->mg_ptr = savepvn(name, namlen);
3338 else if (namlen == HEf_SVKEY)
3339 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3343 mg->mg_virtual = &PL_vtbl_sv;
3346 mg->mg_virtual = &PL_vtbl_amagic;
3349 mg->mg_virtual = &PL_vtbl_amagicelem;
3355 mg->mg_virtual = &PL_vtbl_bm;
3358 mg->mg_virtual = &PL_vtbl_regdata;
3361 mg->mg_virtual = &PL_vtbl_regdatum;
3364 mg->mg_virtual = &PL_vtbl_env;
3367 mg->mg_virtual = &PL_vtbl_fm;
3370 mg->mg_virtual = &PL_vtbl_envelem;
3373 mg->mg_virtual = &PL_vtbl_mglob;
3376 mg->mg_virtual = &PL_vtbl_isa;
3379 mg->mg_virtual = &PL_vtbl_isaelem;
3382 mg->mg_virtual = &PL_vtbl_nkeys;
3389 mg->mg_virtual = &PL_vtbl_dbline;
3393 mg->mg_virtual = &PL_vtbl_mutex;
3395 #endif /* USE_THREADS */
3396 #ifdef USE_LOCALE_COLLATE
3398 mg->mg_virtual = &PL_vtbl_collxfrm;
3400 #endif /* USE_LOCALE_COLLATE */
3402 mg->mg_virtual = &PL_vtbl_pack;
3406 mg->mg_virtual = &PL_vtbl_packelem;
3409 mg->mg_virtual = &PL_vtbl_regexp;
3412 mg->mg_virtual = &PL_vtbl_sig;
3415 mg->mg_virtual = &PL_vtbl_sigelem;
3418 mg->mg_virtual = &PL_vtbl_taint;
3422 mg->mg_virtual = &PL_vtbl_uvar;
3425 mg->mg_virtual = &PL_vtbl_vec;
3428 mg->mg_virtual = &PL_vtbl_substr;
3431 mg->mg_virtual = &PL_vtbl_defelem;
3434 mg->mg_virtual = &PL_vtbl_glob;
3437 mg->mg_virtual = &PL_vtbl_arylen;
3440 mg->mg_virtual = &PL_vtbl_pos;
3443 mg->mg_virtual = &PL_vtbl_backref;
3445 case '~': /* Reserved for use by extensions not perl internals. */
3446 /* Useful for attaching extension internal data to perl vars. */
3447 /* Note that multiple extensions may clash if magical scalars */
3448 /* etc holding private data from one are passed to another. */
3452 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3456 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3460 =for apidoc sv_unmagic
3462 Removes magic from an SV.
3468 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3472 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3475 for (mg = *mgp; mg; mg = *mgp) {
3476 if (mg->mg_type == type) {
3477 MGVTBL* vtbl = mg->mg_virtual;
3478 *mgp = mg->mg_moremagic;
3479 if (vtbl && vtbl->svt_free)
3480 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3481 if (mg->mg_ptr && mg->mg_type != 'g')
3482 if (mg->mg_len >= 0)
3483 Safefree(mg->mg_ptr);
3484 else if (mg->mg_len == HEf_SVKEY)
3485 SvREFCNT_dec((SV*)mg->mg_ptr);
3486 if (mg->mg_flags & MGf_REFCOUNTED)
3487 SvREFCNT_dec(mg->mg_obj);
3491 mgp = &mg->mg_moremagic;
3495 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3502 =for apidoc sv_rvweaken
3510 Perl_sv_rvweaken(pTHX_ SV *sv)
3513 if (!SvOK(sv)) /* let undefs pass */
3516 Perl_croak(aTHX_ "Can't weaken a nonreference");
3517 else if (SvWEAKREF(sv)) {
3519 if (ckWARN(WARN_MISC))
3520 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3524 sv_add_backref(tsv, sv);
3531 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3535 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3536 av = (AV*)mg->mg_obj;
3539 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3540 SvREFCNT_dec(av); /* for sv_magic */
3546 S_sv_del_backref(pTHX_ SV *sv)
3553 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3554 Perl_croak(aTHX_ "panic: del_backref");
3555 av = (AV *)mg->mg_obj;
3560 svp[i] = &PL_sv_undef; /* XXX */
3567 =for apidoc sv_insert
3569 Inserts a string at the specified offset/length within the SV. Similar to
3570 the Perl substr() function.
3576 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3580 register char *midend;
3581 register char *bigend;
3587 Perl_croak(aTHX_ "Can't modify non-existent substring");
3588 SvPV_force(bigstr, curlen);
3589 (void)SvPOK_only_UTF8(bigstr);
3590 if (offset + len > curlen) {
3591 SvGROW(bigstr, offset+len+1);
3592 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3593 SvCUR_set(bigstr, offset+len);
3597 i = littlelen - len;
3598 if (i > 0) { /* string might grow */
3599 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3600 mid = big + offset + len;
3601 midend = bigend = big + SvCUR(bigstr);
3604 while (midend > mid) /* shove everything down */
3605 *--bigend = *--midend;
3606 Move(little,big+offset,littlelen,char);
3612 Move(little,SvPVX(bigstr)+offset,len,char);
3617 big = SvPVX(bigstr);
3620 bigend = big + SvCUR(bigstr);
3622 if (midend > bigend)
3623 Perl_croak(aTHX_ "panic: sv_insert");
3625 if (mid - big > bigend - midend) { /* faster to shorten from end */
3627 Move(little, mid, littlelen,char);
3630 i = bigend - midend;
3632 Move(midend, mid, i,char);
3636 SvCUR_set(bigstr, mid - big);
3639 else if ((i = mid - big)) { /* faster from front */
3640 midend -= littlelen;
3642 sv_chop(bigstr,midend-i);
3647 Move(little, mid, littlelen,char);
3649 else if (littlelen) {
3650 midend -= littlelen;
3651 sv_chop(bigstr,midend);
3652 Move(little,midend,littlelen,char);
3655 sv_chop(bigstr,midend);
3661 =for apidoc sv_replace
3663 Make the first argument a copy of the second, then delete the original.
3669 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3672 U32 refcnt = SvREFCNT(sv);
3673 SV_CHECK_THINKFIRST(sv);
3674 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3675 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3676 if (SvMAGICAL(sv)) {
3680 sv_upgrade(nsv, SVt_PVMG);
3681 SvMAGIC(nsv) = SvMAGIC(sv);
3682 SvFLAGS(nsv) |= SvMAGICAL(sv);
3688 assert(!SvREFCNT(sv));
3689 StructCopy(nsv,sv,SV);
3690 SvREFCNT(sv) = refcnt;
3691 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3696 =for apidoc sv_clear
3698 Clear an SV, making it empty. Does not free the memory used by the SV
3705 Perl_sv_clear(pTHX_ register SV *sv)
3709 assert(SvREFCNT(sv) == 0);
3713 if (PL_defstash) { /* Still have a symbol table? */
3718 Zero(&tmpref, 1, SV);
3719 sv_upgrade(&tmpref, SVt_RV);
3721 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3722 SvREFCNT(&tmpref) = 1;
3725 stash = SvSTASH(sv);
3726 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3729 PUSHSTACKi(PERLSI_DESTROY);
3730 SvRV(&tmpref) = SvREFCNT_inc(sv);
3735 call_sv((SV*)GvCV(destructor),
3736 G_DISCARD|G_EVAL|G_KEEPERR);
3742 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3744 del_XRV(SvANY(&tmpref));
3747 if (PL_in_clean_objs)
3748 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3750 /* DESTROY gave object new lease on life */
3756 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3757 SvOBJECT_off(sv); /* Curse the object. */
3758 if (SvTYPE(sv) != SVt_PVIO)
3759 --PL_sv_objcount; /* XXX Might want something more general */
3762 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3765 switch (SvTYPE(sv)) {
3768 IoIFP(sv) != PerlIO_stdin() &&
3769 IoIFP(sv) != PerlIO_stdout() &&
3770 IoIFP(sv) != PerlIO_stderr())
3772 io_close((IO*)sv, FALSE);
3774 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3775 PerlDir_close(IoDIRP(sv));
3776 IoDIRP(sv) = (DIR*)NULL;
3777 Safefree(IoTOP_NAME(sv));
3778 Safefree(IoFMT_NAME(sv));
3779 Safefree(IoBOTTOM_NAME(sv));
3794 SvREFCNT_dec(LvTARG(sv));
3798 Safefree(GvNAME(sv));
3799 /* cannot decrease stash refcount yet, as we might recursively delete
3800 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3801 of stash until current sv is completely gone.
3802 -- JohnPC, 27 Mar 1998 */
3803 stash = GvSTASH(sv);
3809 (void)SvOOK_off(sv);
3817 SvREFCNT_dec(SvRV(sv));
3819 else if (SvPVX(sv) && SvLEN(sv))
3820 Safefree(SvPVX(sv));
3821 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3822 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3834 switch (SvTYPE(sv)) {
3850 del_XPVIV(SvANY(sv));
3853 del_XPVNV(SvANY(sv));
3856 del_XPVMG(SvANY(sv));
3859 del_XPVLV(SvANY(sv));
3862 del_XPVAV(SvANY(sv));
3865 del_XPVHV(SvANY(sv));
3868 del_XPVCV(SvANY(sv));
3871 del_XPVGV(SvANY(sv));
3872 /* code duplication for increased performance. */
3873 SvFLAGS(sv) &= SVf_BREAK;
3874 SvFLAGS(sv) |= SVTYPEMASK;
3875 /* decrease refcount of the stash that owns this GV, if any */
3877 SvREFCNT_dec(stash);
3878 return; /* not break, SvFLAGS reset already happened */
3880 del_XPVBM(SvANY(sv));
3883 del_XPVFM(SvANY(sv));
3886 del_XPVIO(SvANY(sv));
3889 SvFLAGS(sv) &= SVf_BREAK;
3890 SvFLAGS(sv) |= SVTYPEMASK;
3894 Perl_sv_newref(pTHX_ SV *sv)
3897 ATOMIC_INC(SvREFCNT(sv));
3904 Free the memory used by an SV.
3910 Perl_sv_free(pTHX_ SV *sv)
3913 int refcount_is_zero;
3917 if (SvREFCNT(sv) == 0) {
3918 if (SvFLAGS(sv) & SVf_BREAK)
3920 if (PL_in_clean_all) /* All is fair */
3922 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3923 /* make sure SvREFCNT(sv)==0 happens very seldom */
3924 SvREFCNT(sv) = (~(U32)0)/2;
3927 if (ckWARN_d(WARN_INTERNAL))
3928 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3931 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3932 if (!refcount_is_zero)
3936 if (ckWARN_d(WARN_DEBUGGING))
3937 Perl_warner(aTHX_ WARN_DEBUGGING,
3938 "Attempt to free temp prematurely: SV 0x%"UVxf,
3943 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3944 /* make sure SvREFCNT(sv)==0 happens very seldom */
3945 SvREFCNT(sv) = (~(U32)0)/2;
3956 Returns the length of the string in the SV. See also C<SvCUR>.
3962 Perl_sv_len(pTHX_ register SV *sv)
3971 len = mg_length(sv);
3973 junk = SvPV(sv, len);
3978 =for apidoc sv_len_utf8
3980 Returns the number of characters in the string in an SV, counting wide
3981 UTF8 bytes as a single character.
3987 Perl_sv_len_utf8(pTHX_ register SV *sv)
3998 len = mg_length(sv);
4001 s = (U8*)SvPV(sv, len);
4012 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4017 I32 uoffset = *offsetp;
4023 start = s = (U8*)SvPV(sv, len);
4025 while (s < send && uoffset--)
4029 *offsetp = s - start;
4033 while (s < send && ulen--)
4043 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4052 s = (U8*)SvPV(sv, len);
4054 Perl_croak(aTHX_ "panic: bad byte offset");
4055 send = s + *offsetp;
4063 if (ckWARN_d(WARN_UTF8))
4064 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4074 Returns a boolean indicating whether the strings in the two SVs are
4081 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4088 bool pv1tmp = FALSE;
4089 bool pv2tmp = FALSE;
4096 pv1 = SvPV(sv1, cur1);
4103 pv2 = SvPV(sv2, cur2);
4105 /* do not utf8ize the comparands as a side-effect */
4106 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4108 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4112 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4118 eq = memEQ(pv1, pv2, cur1);
4131 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4132 string in C<sv1> is less than, equal to, or greater than the string in
4139 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4144 bool pv1tmp = FALSE;
4145 bool pv2tmp = FALSE;
4152 pv1 = SvPV(sv1, cur1);
4159 pv2 = SvPV(sv2, cur2);
4161 /* do not utf8ize the comparands as a side-effect */
4162 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4164 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4168 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4174 cmp = cur2 ? -1 : 0;
4178 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4181 cmp = retval < 0 ? -1 : 1;
4182 } else if (cur1 == cur2) {
4185 cmp = cur1 < cur2 ? -1 : 1;
4198 =for apidoc sv_cmp_locale
4200 Compares the strings in two SVs in a locale-aware manner. See
4207 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4209 #ifdef USE_LOCALE_COLLATE
4215 if (PL_collation_standard)
4219 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4221 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4223 if (!pv1 || !len1) {
4234 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4237 return retval < 0 ? -1 : 1;
4240 * When the result of collation is equality, that doesn't mean
4241 * that there are no differences -- some locales exclude some
4242 * characters from consideration. So to avoid false equalities,
4243 * we use the raw string as a tiebreaker.
4249 #endif /* USE_LOCALE_COLLATE */
4251 return sv_cmp(sv1, sv2);
4254 #ifdef USE_LOCALE_COLLATE
4256 * Any scalar variable may carry an 'o' magic that contains the
4257 * scalar data of the variable transformed to such a format that
4258 * a normal memory comparison can be used to compare the data
4259 * according to the locale settings.
4262 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4266 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4267 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4272 Safefree(mg->mg_ptr);
4274 if ((xf = mem_collxfrm(s, len, &xlen))) {
4275 if (SvREADONLY(sv)) {
4278 return xf + sizeof(PL_collation_ix);
4281 sv_magic(sv, 0, 'o', 0, 0);
4282 mg = mg_find(sv, 'o');
4295 if (mg && mg->mg_ptr) {
4297 return mg->mg_ptr + sizeof(PL_collation_ix);
4305 #endif /* USE_LOCALE_COLLATE */
4310 Get a line from the filehandle and store it into the SV, optionally
4311 appending to the currently-stored string.
4317 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4322 register STDCHAR rslast;
4323 register STDCHAR *bp;
4327 SV_CHECK_THINKFIRST(sv);
4328 (void)SvUPGRADE(sv, SVt_PV);
4332 if (RsSNARF(PL_rs)) {
4336 else if (RsRECORD(PL_rs)) {
4337 I32 recsize, bytesread;
4340 /* Grab the size of the record we're getting */
4341 recsize = SvIV(SvRV(PL_rs));
4342 (void)SvPOK_only(sv); /* Validate pointer */
4343 buffer = SvGROW(sv, recsize + 1);
4346 /* VMS wants read instead of fread, because fread doesn't respect */
4347 /* RMS record boundaries. This is not necessarily a good thing to be */
4348 /* doing, but we've got no other real choice */
4349 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4351 bytesread = PerlIO_read(fp, buffer, recsize);
4353 SvCUR_set(sv, bytesread);
4354 buffer[bytesread] = '\0';
4355 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4357 else if (RsPARA(PL_rs)) {
4362 rsptr = SvPV(PL_rs, rslen);
4363 rslast = rslen ? rsptr[rslen - 1] : '\0';
4365 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4366 do { /* to make sure file boundaries work right */
4369 i = PerlIO_getc(fp);
4373 PerlIO_ungetc(fp,i);
4379 /* See if we know enough about I/O mechanism to cheat it ! */
4381 /* This used to be #ifdef test - it is made run-time test for ease
4382 of abstracting out stdio interface. One call should be cheap
4383 enough here - and may even be a macro allowing compile
4387 if (PerlIO_fast_gets(fp)) {
4390 * We're going to steal some values from the stdio struct
4391 * and put EVERYTHING in the innermost loop into registers.
4393 register STDCHAR *ptr;
4397 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4398 /* An ungetc()d char is handled separately from the regular
4399 * buffer, so we getc() it back out and stuff it in the buffer.
4401 i = PerlIO_getc(fp);
4402 if (i == EOF) return 0;
4403 *(--((*fp)->_ptr)) = (unsigned char) i;
4407 /* Here is some breathtakingly efficient cheating */
4409 cnt = PerlIO_get_cnt(fp); /* get count into register */
4410 (void)SvPOK_only(sv); /* validate pointer */
4411 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4412 if (cnt > 80 && SvLEN(sv) > append) {
4413 shortbuffered = cnt - SvLEN(sv) + append + 1;
4414 cnt -= shortbuffered;
4418 /* remember that cnt can be negative */
4419 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4424 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4425 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4426 DEBUG_P(PerlIO_printf(Perl_debug_log,
4427 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4428 DEBUG_P(PerlIO_printf(Perl_debug_log,
4429 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4430 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4431 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4436 while (cnt > 0) { /* this | eat */
4438 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4439 goto thats_all_folks; /* screams | sed :-) */
4443 Copy(ptr, bp, cnt, char); /* this | eat */
4444 bp += cnt; /* screams | dust */
4445 ptr += cnt; /* louder | sed :-) */
4450 if (shortbuffered) { /* oh well, must extend */
4451 cnt = shortbuffered;
4453 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4455 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4456 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4460 DEBUG_P(PerlIO_printf(Perl_debug_log,
4461 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4462 PTR2UV(ptr),(long)cnt));
4463 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4464 DEBUG_P(PerlIO_printf(Perl_debug_log,
4465 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4466 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4467 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4468 /* This used to call 'filbuf' in stdio form, but as that behaves like
4469 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4470 another abstraction. */
4471 i = PerlIO_getc(fp); /* get more characters */
4472 DEBUG_P(PerlIO_printf(Perl_debug_log,
4473 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4474 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4475 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4476 cnt = PerlIO_get_cnt(fp);
4477 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4478 DEBUG_P(PerlIO_printf(Perl_debug_log,
4479 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4481 if (i == EOF) /* all done for ever? */
4482 goto thats_really_all_folks;
4484 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4486 SvGROW(sv, bpx + cnt + 2);
4487 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4489 *bp++ = i; /* store character from PerlIO_getc */
4491 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4492 goto thats_all_folks;
4496 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4497 memNE((char*)bp - rslen, rsptr, rslen))
4498 goto screamer; /* go back to the fray */
4499 thats_really_all_folks:
4501 cnt += shortbuffered;
4502 DEBUG_P(PerlIO_printf(Perl_debug_log,
4503 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4504 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4505 DEBUG_P(PerlIO_printf(Perl_debug_log,
4506 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4507 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4508 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4510 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4511 DEBUG_P(PerlIO_printf(Perl_debug_log,
4512 "Screamer: done, len=%ld, string=|%.*s|\n",
4513 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4518 /*The big, slow, and stupid way */
4521 /* Need to work around EPOC SDK features */
4522 /* On WINS: MS VC5 generates calls to _chkstk, */
4523 /* if a `large' stack frame is allocated */
4524 /* gcc on MARM does not generate calls like these */
4530 register STDCHAR *bpe = buf + sizeof(buf);
4532 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4533 ; /* keep reading */
4537 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4538 /* Accomodate broken VAXC compiler, which applies U8 cast to
4539 * both args of ?: operator, causing EOF to change into 255
4541 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4545 sv_catpvn(sv, (char *) buf, cnt);
4547 sv_setpvn(sv, (char *) buf, cnt);
4549 if (i != EOF && /* joy */
4551 SvCUR(sv) < rslen ||
4552 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4556 * If we're reading from a TTY and we get a short read,
4557 * indicating that the user hit his EOF character, we need
4558 * to notice it now, because if we try to read from the TTY
4559 * again, the EOF condition will disappear.
4561 * The comparison of cnt to sizeof(buf) is an optimization
4562 * that prevents unnecessary calls to feof().
4566 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4571 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4572 while (i != EOF) { /* to make sure file boundaries work right */
4573 i = PerlIO_getc(fp);
4575 PerlIO_ungetc(fp,i);
4581 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4588 Auto-increment of the value in the SV.
4594 Perl_sv_inc(pTHX_ register SV *sv)
4603 if (SvTHINKFIRST(sv)) {
4604 if (SvREADONLY(sv)) {
4606 if (PL_curcop != &PL_compiling)
4607 Perl_croak(aTHX_ PL_no_modify);
4611 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4613 i = PTR2IV(SvRV(sv));
4618 flags = SvFLAGS(sv);
4619 if (flags & SVp_NOK) {
4620 (void)SvNOK_only(sv);
4624 if (flags & SVp_IOK) {
4626 if (SvUVX(sv) == UV_MAX)
4627 sv_setnv(sv, (NV)UV_MAX + 1.0);
4629 (void)SvIOK_only_UV(sv);
4632 if (SvIVX(sv) == IV_MAX)
4633 sv_setnv(sv, (NV)IV_MAX + 1.0);
4635 (void)SvIOK_only(sv);
4641 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4642 if ((flags & SVTYPEMASK) < SVt_PVNV)
4643 sv_upgrade(sv, SVt_NV);
4645 (void)SvNOK_only(sv);
4649 while (isALPHA(*d)) d++;
4650 while (isDIGIT(*d)) d++;
4652 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4656 while (d >= SvPVX(sv)) {
4664 /* MKS: The original code here died if letters weren't consecutive.
4665 * at least it didn't have to worry about non-C locales. The
4666 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4667 * arranged in order (although not consecutively) and that only
4668 * [A-Za-z] are accepted by isALPHA in the C locale.
4670 if (*d != 'z' && *d != 'Z') {
4671 do { ++*d; } while (!isALPHA(*d));
4674 *(d--) -= 'z' - 'a';
4679 *(d--) -= 'z' - 'a' + 1;
4683 /* oh,oh, the number grew */
4684 SvGROW(sv, SvCUR(sv) + 2);
4686 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4697 Auto-decrement of the value in the SV.
4703 Perl_sv_dec(pTHX_ register SV *sv)
4711 if (SvTHINKFIRST(sv)) {
4712 if (SvREADONLY(sv)) {
4714 if (PL_curcop != &PL_compiling)
4715 Perl_croak(aTHX_ PL_no_modify);
4719 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4721 i = PTR2IV(SvRV(sv));
4726 flags = SvFLAGS(sv);
4727 if (flags & SVp_NOK) {
4729 (void)SvNOK_only(sv);
4732 if (flags & SVp_IOK) {
4734 if (SvUVX(sv) == 0) {
4735 (void)SvIOK_only(sv);
4739 (void)SvIOK_only_UV(sv);
4743 if (SvIVX(sv) == IV_MIN)
4744 sv_setnv(sv, (NV)IV_MIN - 1.0);
4746 (void)SvIOK_only(sv);
4752 if (!(flags & SVp_POK)) {
4753 if ((flags & SVTYPEMASK) < SVt_PVNV)
4754 sv_upgrade(sv, SVt_NV);
4756 (void)SvNOK_only(sv);
4759 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4763 =for apidoc sv_mortalcopy
4765 Creates a new SV which is a copy of the original SV. The new SV is marked
4771 /* Make a string that will exist for the duration of the expression
4772 * evaluation. Actually, it may have to last longer than that, but
4773 * hopefully we won't free it until it has been assigned to a
4774 * permanent location. */
4777 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4783 sv_setsv(sv,oldstr);
4785 PL_tmps_stack[++PL_tmps_ix] = sv;
4791 =for apidoc sv_newmortal
4793 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4799 Perl_sv_newmortal(pTHX)
4805 SvFLAGS(sv) = SVs_TEMP;
4807 PL_tmps_stack[++PL_tmps_ix] = sv;
4812 =for apidoc sv_2mortal
4814 Marks an SV as mortal. The SV will be destroyed when the current context
4820 /* same thing without the copying */
4823 Perl_sv_2mortal(pTHX_ register SV *sv)
4828 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4831 PL_tmps_stack[++PL_tmps_ix] = sv;
4839 Creates a new SV and copies a string into it. The reference count for the
4840 SV is set to 1. If C<len> is zero, Perl will compute the length using
4841 strlen(). For efficiency, consider using C<newSVpvn> instead.
4847 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4854 sv_setpvn(sv,s,len);
4859 =for apidoc newSVpvn
4861 Creates a new SV and copies a string into it. The reference count for the
4862 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4863 string. You are responsible for ensuring that the source string is at least
4870 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4875 sv_setpvn(sv,s,len);
4880 =for apidoc newSVpvn_share
4882 Creates a new SV and populates it with a string from
4883 the string table. Turns on READONLY and FAKE.
4884 The idea here is that as string table is used for shared hash
4885 keys these strings will have SvPVX == HeKEY and hash lookup
4886 will avoid string compare.
4892 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4896 PERL_HASH(hash, src, len);
4898 sv_upgrade(sv, SVt_PVIV);
4899 SvPVX(sv) = sharepvn(src, len, hash);
4909 #if defined(PERL_IMPLICIT_CONTEXT)
4911 Perl_newSVpvf_nocontext(const char* pat, ...)
4916 va_start(args, pat);
4917 sv = vnewSVpvf(pat, &args);
4924 =for apidoc newSVpvf
4926 Creates a new SV an initialize it with the string formatted like
4933 Perl_newSVpvf(pTHX_ const char* pat, ...)
4937 va_start(args, pat);
4938 sv = vnewSVpvf(pat, &args);
4944 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4948 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4955 Creates a new SV and copies a floating point value into it.
4956 The reference count for the SV is set to 1.
4962 Perl_newSVnv(pTHX_ NV n)
4974 Creates a new SV and copies an integer into it. The reference count for the
4981 Perl_newSViv(pTHX_ IV i)
4993 Creates a new SV and copies an unsigned integer into it.
4994 The reference count for the SV is set to 1.
5000 Perl_newSVuv(pTHX_ UV u)
5010 =for apidoc newRV_noinc
5012 Creates an RV wrapper for an SV. The reference count for the original
5013 SV is B<not> incremented.
5019 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5025 sv_upgrade(sv, SVt_RV);
5032 /* newRV_inc is #defined to newRV in sv.h */
5034 Perl_newRV(pTHX_ SV *tmpRef)
5036 return newRV_noinc(SvREFCNT_inc(tmpRef));
5042 Creates a new SV which is an exact duplicate of the original SV.
5047 /* make an exact duplicate of old */
5050 Perl_newSVsv(pTHX_ register SV *old)
5057 if (SvTYPE(old) == SVTYPEMASK) {
5058 if (ckWARN_d(WARN_INTERNAL))
5059 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5074 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5082 char todo[PERL_UCHAR_MAX+1];
5087 if (!*s) { /* reset ?? searches */
5088 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5089 pm->op_pmdynflags &= ~PMdf_USED;
5094 /* reset variables */
5096 if (!HvARRAY(stash))
5099 Zero(todo, 256, char);
5101 i = (unsigned char)*s;
5105 max = (unsigned char)*s++;
5106 for ( ; i <= max; i++) {
5109 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5110 for (entry = HvARRAY(stash)[i];
5112 entry = HeNEXT(entry))
5114 if (!todo[(U8)*HeKEY(entry)])
5116 gv = (GV*)HeVAL(entry);
5118 if (SvTHINKFIRST(sv)) {
5119 if (!SvREADONLY(sv) && SvROK(sv))
5124 if (SvTYPE(sv) >= SVt_PV) {
5126 if (SvPVX(sv) != Nullch)
5133 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5135 #if !defined( VMS) && !defined(EPOC) /* VMS has no environ array */
5137 environ[0] = Nullch;
5146 Perl_sv_2io(pTHX_ SV *sv)
5152 switch (SvTYPE(sv)) {
5160 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5164 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5166 return sv_2io(SvRV(sv));
5167 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5173 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5180 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5187 return *gvp = Nullgv, Nullcv;
5188 switch (SvTYPE(sv)) {
5208 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5209 tryAMAGICunDEREF(to_cv);
5212 if (SvTYPE(sv) == SVt_PVCV) {
5221 Perl_croak(aTHX_ "Not a subroutine reference");
5226 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5232 if (lref && !GvCVu(gv)) {
5235 tmpsv = NEWSV(704,0);
5236 gv_efullname3(tmpsv, gv, Nullch);
5237 /* XXX this is probably not what they think they're getting.
5238 * It has the same effect as "sub name;", i.e. just a forward
5240 newSUB(start_subparse(FALSE, 0),
5241 newSVOP(OP_CONST, 0, tmpsv),
5246 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5255 Returns true if the SV has a true value by Perl's rules.
5261 Perl_sv_true(pTHX_ register SV *sv)
5268 if ((tXpv = (XPV*)SvANY(sv)) &&
5269 (tXpv->xpv_cur > 1 ||
5270 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5277 return SvIVX(sv) != 0;
5280 return SvNVX(sv) != 0.0;
5282 return sv_2bool(sv);
5288 Perl_sv_iv(pTHX_ register SV *sv)
5292 return (IV)SvUVX(sv);
5299 Perl_sv_uv(pTHX_ register SV *sv)
5304 return (UV)SvIVX(sv);
5310 Perl_sv_nv(pTHX_ register SV *sv)
5318 Perl_sv_pv(pTHX_ SV *sv)
5325 return sv_2pv(sv, &n_a);
5329 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5335 return sv_2pv(sv, lp);
5339 =for apidoc sv_pvn_force
5341 Get a sensible string out of the SV somehow.
5347 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5351 if (SvTHINKFIRST(sv) && !SvROK(sv))
5352 sv_force_normal(sv);
5358 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5360 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5361 PL_op_name[PL_op->op_type]);
5365 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5370 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5371 SvGROW(sv, len + 1);
5372 Move(s,SvPVX(sv),len,char);
5377 SvPOK_on(sv); /* validate pointer */
5379 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5380 PTR2UV(sv),SvPVX(sv)));
5387 Perl_sv_pvbyte(pTHX_ SV *sv)
5393 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5395 return sv_pvn(sv,lp);
5399 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5401 return sv_pvn_force(sv,lp);
5405 Perl_sv_pvutf8(pTHX_ SV *sv)
5407 sv_utf8_upgrade(sv);
5412 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5414 sv_utf8_upgrade(sv);
5415 return sv_pvn(sv,lp);
5419 =for apidoc sv_pvutf8n_force
5421 Get a sensible UTF8-encoded string out of the SV somehow. See
5428 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5430 sv_utf8_upgrade(sv);
5431 return sv_pvn_force(sv,lp);
5435 =for apidoc sv_reftype
5437 Returns a string describing what the SV is a reference to.
5443 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5445 if (ob && SvOBJECT(sv))
5446 return HvNAME(SvSTASH(sv));
5448 switch (SvTYPE(sv)) {
5462 case SVt_PVLV: return "LVALUE";
5463 case SVt_PVAV: return "ARRAY";
5464 case SVt_PVHV: return "HASH";
5465 case SVt_PVCV: return "CODE";
5466 case SVt_PVGV: return "GLOB";
5467 case SVt_PVFM: return "FORMAT";
5468 case SVt_PVIO: return "IO";
5469 default: return "UNKNOWN";
5475 =for apidoc sv_isobject
5477 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5478 object. If the SV is not an RV, or if the object is not blessed, then this
5485 Perl_sv_isobject(pTHX_ SV *sv)
5502 Returns a boolean indicating whether the SV is blessed into the specified
5503 class. This does not check for subtypes; use C<sv_derived_from> to verify
5504 an inheritance relationship.
5510 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5522 return strEQ(HvNAME(SvSTASH(sv)), name);
5528 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5529 it will be upgraded to one. If C<classname> is non-null then the new SV will
5530 be blessed in the specified package. The new SV is returned and its
5531 reference count is 1.
5537 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5544 SV_CHECK_THINKFIRST(rv);
5547 if (SvTYPE(rv) >= SVt_PVMG) {
5548 U32 refcnt = SvREFCNT(rv);
5552 SvREFCNT(rv) = refcnt;
5555 if (SvTYPE(rv) < SVt_RV)
5556 sv_upgrade(rv, SVt_RV);
5557 else if (SvTYPE(rv) > SVt_RV) {
5558 (void)SvOOK_off(rv);
5559 if (SvPVX(rv) && SvLEN(rv))
5560 Safefree(SvPVX(rv));
5570 HV* stash = gv_stashpv(classname, TRUE);
5571 (void)sv_bless(rv, stash);
5577 =for apidoc sv_setref_pv
5579 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5580 argument will be upgraded to an RV. That RV will be modified to point to
5581 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5582 into the SV. The C<classname> argument indicates the package for the
5583 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5584 will be returned and will have a reference count of 1.
5586 Do not use with other Perl types such as HV, AV, SV, CV, because those
5587 objects will become corrupted by the pointer copy process.
5589 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5595 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5598 sv_setsv(rv, &PL_sv_undef);
5602 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5607 =for apidoc sv_setref_iv
5609 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5610 argument will be upgraded to an RV. That RV will be modified to point to
5611 the new SV. The C<classname> argument indicates the package for the
5612 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5613 will be returned and will have a reference count of 1.
5619 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5621 sv_setiv(newSVrv(rv,classname), iv);
5626 =for apidoc sv_setref_nv
5628 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5629 argument will be upgraded to an RV. That RV will be modified to point to
5630 the new SV. The C<classname> argument indicates the package for the
5631 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5632 will be returned and will have a reference count of 1.
5638 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5640 sv_setnv(newSVrv(rv,classname), nv);
5645 =for apidoc sv_setref_pvn
5647 Copies a string into a new SV, optionally blessing the SV. The length of the
5648 string must be specified with C<n>. The C<rv> argument will be upgraded to
5649 an RV. That RV will be modified to point to the new SV. The C<classname>
5650 argument indicates the package for the blessing. Set C<classname> to
5651 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5652 a reference count of 1.
5654 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5660 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5662 sv_setpvn(newSVrv(rv,classname), pv, n);
5667 =for apidoc sv_bless
5669 Blesses an SV into a specified package. The SV must be an RV. The package
5670 must be designated by its stash (see C<gv_stashpv()>). The reference count
5671 of the SV is unaffected.
5677 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5682 Perl_croak(aTHX_ "Can't bless non-reference value");
5684 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5685 if (SvREADONLY(tmpRef))
5686 Perl_croak(aTHX_ PL_no_modify);
5687 if (SvOBJECT(tmpRef)) {
5688 if (SvTYPE(tmpRef) != SVt_PVIO)
5690 SvREFCNT_dec(SvSTASH(tmpRef));
5693 SvOBJECT_on(tmpRef);
5694 if (SvTYPE(tmpRef) != SVt_PVIO)
5696 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5697 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5708 S_sv_unglob(pTHX_ SV *sv)
5712 assert(SvTYPE(sv) == SVt_PVGV);
5717 SvREFCNT_dec(GvSTASH(sv));
5718 GvSTASH(sv) = Nullhv;
5720 sv_unmagic(sv, '*');
5721 Safefree(GvNAME(sv));
5724 /* need to keep SvANY(sv) in the right arena */
5725 xpvmg = new_XPVMG();
5726 StructCopy(SvANY(sv), xpvmg, XPVMG);
5727 del_XPVGV(SvANY(sv));
5730 SvFLAGS(sv) &= ~SVTYPEMASK;
5731 SvFLAGS(sv) |= SVt_PVMG;
5735 =for apidoc sv_unref
5737 Unsets the RV status of the SV, and decrements the reference count of
5738 whatever was being referenced by the RV. This can almost be thought of
5739 as a reversal of C<newSVrv>. See C<SvROK_off>.
5745 Perl_sv_unref(pTHX_ SV *sv)
5749 if (SvWEAKREF(sv)) {
5757 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5760 sv_2mortal(rv); /* Schedule for freeing later */
5764 Perl_sv_taint(pTHX_ SV *sv)
5766 sv_magic((sv), Nullsv, 't', Nullch, 0);
5770 Perl_sv_untaint(pTHX_ SV *sv)
5772 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5773 MAGIC *mg = mg_find(sv, 't');
5780 Perl_sv_tainted(pTHX_ SV *sv)
5782 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5783 MAGIC *mg = mg_find(sv, 't');
5784 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5791 =for apidoc sv_setpviv
5793 Copies an integer into the given SV, also updating its string value.
5794 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5800 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5802 char buf[TYPE_CHARS(UV)];
5804 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5806 sv_setpvn(sv, ptr, ebuf - ptr);
5811 =for apidoc sv_setpviv_mg
5813 Like C<sv_setpviv>, but also handles 'set' magic.
5819 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5821 char buf[TYPE_CHARS(UV)];
5823 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5825 sv_setpvn(sv, ptr, ebuf - ptr);
5829 #if defined(PERL_IMPLICIT_CONTEXT)
5831 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5835 va_start(args, pat);
5836 sv_vsetpvf(sv, pat, &args);
5842 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5846 va_start(args, pat);
5847 sv_vsetpvf_mg(sv, pat, &args);
5853 =for apidoc sv_setpvf
5855 Processes its arguments like C<sprintf> and sets an SV to the formatted
5856 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5862 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5865 va_start(args, pat);
5866 sv_vsetpvf(sv, pat, &args);
5871 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5873 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5877 =for apidoc sv_setpvf_mg
5879 Like C<sv_setpvf>, but also handles 'set' magic.
5885 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5888 va_start(args, pat);
5889 sv_vsetpvf_mg(sv, pat, &args);
5894 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5896 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5900 #if defined(PERL_IMPLICIT_CONTEXT)
5902 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5906 va_start(args, pat);
5907 sv_vcatpvf(sv, pat, &args);
5912 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5916 va_start(args, pat);
5917 sv_vcatpvf_mg(sv, pat, &args);
5923 =for apidoc sv_catpvf
5925 Processes its arguments like C<sprintf> and appends the formatted output
5926 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5927 typically be called after calling this function to handle 'set' magic.
5933 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5936 va_start(args, pat);
5937 sv_vcatpvf(sv, pat, &args);
5942 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5944 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5948 =for apidoc sv_catpvf_mg
5950 Like C<sv_catpvf>, but also handles 'set' magic.
5956 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5959 va_start(args, pat);
5960 sv_vcatpvf_mg(sv, pat, &args);
5965 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5967 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5972 =for apidoc sv_vsetpvfn
5974 Works like C<vcatpvfn> but copies the text into the SV instead of
5981 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5983 sv_setpvn(sv, "", 0);
5984 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5988 =for apidoc sv_vcatpvfn
5990 Processes its arguments like C<vsprintf> and appends the formatted output
5991 to an SV. Uses an array of SVs if the C style variable argument list is
5992 missing (NULL). When running with taint checks enabled, indicates via
5993 C<maybe_tainted> if results are untrustworthy (often due to the use of
6000 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6008 static char nullstr[] = "(null)";
6011 /* no matter what, this is a string now */
6012 (void)SvPV_force(sv, origlen);
6014 /* special-case "", "%s", and "%_" */
6017 if (patlen == 2 && pat[0] == '%') {
6021 char *s = va_arg(*args, char*);
6022 sv_catpv(sv, s ? s : nullstr);
6024 else if (svix < svmax) {
6025 sv_catsv(sv, *svargs);
6026 if (DO_UTF8(*svargs))
6032 argsv = va_arg(*args, SV*);
6033 sv_catsv(sv, argsv);
6038 /* See comment on '_' below */
6043 patend = (char*)pat + patlen;
6044 for (p = (char*)pat; p < patend; p = q) {
6047 bool vectorize = FALSE;
6054 bool has_precis = FALSE;
6056 bool is_utf = FALSE;
6059 U8 utf8buf[UTF8_MAXLEN];
6060 STRLEN esignlen = 0;
6062 char *eptr = Nullch;
6064 /* Times 4: a decimal digit takes more than 3 binary digits.
6065 * NV_DIG: mantissa takes than many decimal digits.
6066 * Plus 32: Playing safe. */
6067 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6068 /* large enough for "%#.#f" --chip */
6069 /* what about long double NVs? --jhi */
6072 U8 *vecstr = Null(U8*);
6084 STRLEN dotstrlen = 1;
6086 for (q = p; q < patend && *q != '%'; ++q) ;
6088 sv_catpvn(sv, p, q - p);
6117 case '*': /* printf("%*vX",":",$ipv6addr) */
6122 vecsv = va_arg(*args, SV*);
6123 else if (svix < svmax)
6124 vecsv = svargs[svix++];
6127 dotstr = SvPVx(vecsv,dotstrlen);
6146 case '1': case '2': case '3':
6147 case '4': case '5': case '6':
6148 case '7': case '8': case '9':
6151 width = width * 10 + (*q++ - '0');
6156 i = va_arg(*args, int);
6158 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6160 width = (i < 0) ? -i : i;
6171 i = va_arg(*args, int);
6173 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6174 precis = (i < 0) ? 0 : i;
6180 precis = precis * 10 + (*q++ - '0');
6187 vecsv = va_arg(*args, SV*);
6188 vecstr = (U8*)SvPVx(vecsv,veclen);
6189 utf = DO_UTF8(vecsv);
6191 else if (svix < svmax) {
6192 vecsv = svargs[svix++];
6193 vecstr = (U8*)SvPVx(vecsv,veclen);
6194 utf = DO_UTF8(vecsv);
6205 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6216 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6217 if (*(q + 1) == 'l') { /* lld, llf */
6244 uv = va_arg(*args, int);
6246 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6247 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6248 eptr = (char*)utf8buf;
6249 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6261 eptr = va_arg(*args, char*);
6263 #ifdef MACOS_TRADITIONAL
6264 /* On MacOS, %#s format is used for Pascal strings */
6269 elen = strlen(eptr);
6272 elen = sizeof nullstr - 1;
6275 else if (svix < svmax) {
6276 argsv = svargs[svix++];
6277 eptr = SvPVx(argsv, elen);
6278 if (DO_UTF8(argsv)) {
6279 if (has_precis && precis < elen) {
6281 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6284 if (width) { /* fudge width (can't fudge elen) */
6285 width += elen - sv_len_utf8(argsv);
6294 * The "%_" hack might have to be changed someday,
6295 * if ISO or ANSI decide to use '_' for something.
6296 * So we keep it hidden from users' code.
6300 argsv = va_arg(*args,SV*);
6301 eptr = SvPVx(argsv, elen);
6307 if (has_precis && elen > precis)
6317 uv = PTR2UV(va_arg(*args, void*));
6319 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
6339 iv = (IV)utf8_to_uv_chk(vecstr, &ulen, 0);
6349 case 'h': iv = (short)va_arg(*args, int); break;
6350 default: iv = va_arg(*args, int); break;
6351 case 'l': iv = va_arg(*args, long); break;
6352 case 'V': iv = va_arg(*args, IV); break;
6354 case 'q': iv = va_arg(*args, Quad_t); break;
6359 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6361 case 'h': iv = (short)iv; break;
6363 case 'l': iv = (long)iv; break;
6366 case 'q': iv = (Quad_t)iv; break;
6373 esignbuf[esignlen++] = plus;
6377 esignbuf[esignlen++] = '-';
6421 uv = utf8_to_uv_chk(vecstr, &ulen, 0);
6431 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6432 default: uv = va_arg(*args, unsigned); break;
6433 case 'l': uv = va_arg(*args, unsigned long); break;
6434 case 'V': uv = va_arg(*args, UV); break;
6436 case 'q': uv = va_arg(*args, Quad_t); break;
6441 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6443 case 'h': uv = (unsigned short)uv; break;
6445 case 'l': uv = (unsigned long)uv; break;
6448 case 'q': uv = (Quad_t)uv; break;
6454 eptr = ebuf + sizeof ebuf;
6460 p = (char*)((c == 'X')
6461 ? "0123456789ABCDEF" : "0123456789abcdef");
6467 esignbuf[esignlen++] = '0';
6468 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6474 *--eptr = '0' + dig;
6476 if (alt && *eptr != '0')
6482 *--eptr = '0' + dig;
6485 esignbuf[esignlen++] = '0';
6486 esignbuf[esignlen++] = 'b';
6489 default: /* it had better be ten or less */
6490 #if defined(PERL_Y2KWARN)
6491 if (ckWARN(WARN_Y2K)) {
6493 char *s = SvPV(sv,n);
6494 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6495 && (n == 2 || !isDIGIT(s[n-3])))
6497 Perl_warner(aTHX_ WARN_Y2K,
6498 "Possible Y2K bug: %%%c %s",
6499 c, "format string following '19'");
6505 *--eptr = '0' + dig;
6506 } while (uv /= base);
6509 elen = (ebuf + sizeof ebuf) - eptr;
6512 zeros = precis - elen;
6513 else if (precis == 0 && elen == 1 && *eptr == '0')
6518 /* FLOATING POINT */
6521 c = 'f'; /* maybe %F isn't supported here */
6527 /* This is evil, but floating point is even more evil */
6531 nv = va_arg(*args, NV);
6533 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6536 if (c != 'e' && c != 'E') {
6538 (void)Perl_frexp(nv, &i);
6539 if (i == PERL_INT_MIN)
6540 Perl_die(aTHX_ "panic: frexp");
6542 need = BIT_DIGITS(i);
6544 need += has_precis ? precis : 6; /* known default */
6548 need += 20; /* fudge factor */
6549 if (PL_efloatsize < need) {
6550 Safefree(PL_efloatbuf);
6551 PL_efloatsize = need + 20; /* more fudge */
6552 New(906, PL_efloatbuf, PL_efloatsize, char);
6553 PL_efloatbuf[0] = '\0';
6556 eptr = ebuf + sizeof ebuf;
6559 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6561 /* Copy the one or more characters in a long double
6562 * format before the 'base' ([efgEFG]) character to
6563 * the format string. */
6564 static char const prifldbl[] = PERL_PRIfldbl;
6565 char const *p = prifldbl + sizeof(prifldbl) - 3;
6566 while (p >= prifldbl) { *--eptr = *p--; }
6571 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6576 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6589 STORE_NUMERIC_STANDARD_SET_LOCAL();
6590 #ifdef USE_LOCALE_NUMERIC
6591 if (!was_standard && maybe_tainted)
6592 *maybe_tainted = TRUE;
6594 (void)sprintf(PL_efloatbuf, eptr, nv);
6595 RESTORE_NUMERIC_STANDARD();
6598 eptr = PL_efloatbuf;
6599 elen = strlen(PL_efloatbuf);
6606 i = SvCUR(sv) - origlen;
6609 case 'h': *(va_arg(*args, short*)) = i; break;
6610 default: *(va_arg(*args, int*)) = i; break;
6611 case 'l': *(va_arg(*args, long*)) = i; break;
6612 case 'V': *(va_arg(*args, IV*)) = i; break;
6614 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6618 else if (svix < svmax)
6619 sv_setuv_mg(svargs[svix++], (UV)i);
6620 continue; /* not "break" */
6627 if (!args && ckWARN(WARN_PRINTF) &&
6628 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6629 SV *msg = sv_newmortal();
6630 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6631 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6634 Perl_sv_catpvf(aTHX_ msg,
6635 "\"%%%c\"", c & 0xFF);
6637 Perl_sv_catpvf(aTHX_ msg,
6638 "\"%%\\%03"UVof"\"",
6641 sv_catpv(msg, "end of string");
6642 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6645 /* output mangled stuff ... */
6651 /* ... right here, because formatting flags should not apply */
6652 SvGROW(sv, SvCUR(sv) + elen + 1);
6654 memcpy(p, eptr, elen);
6657 SvCUR(sv) = p - SvPVX(sv);
6658 continue; /* not "break" */
6661 have = esignlen + zeros + elen;
6662 need = (have > width ? have : width);
6665 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6667 if (esignlen && fill == '0') {
6668 for (i = 0; i < esignlen; i++)
6672 memset(p, fill, gap);
6675 if (esignlen && fill != '0') {
6676 for (i = 0; i < esignlen; i++)
6680 for (i = zeros; i; i--)
6684 memcpy(p, eptr, elen);
6688 memset(p, ' ', gap);
6693 memcpy(p, dotstr, dotstrlen);
6697 vectorize = FALSE; /* done iterating over vecstr */
6702 SvCUR(sv) = p - SvPVX(sv);
6710 #if defined(USE_ITHREADS)
6712 #if defined(USE_THREADS)
6713 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6716 #ifndef GpREFCNT_inc
6717 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6721 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6722 #define av_dup(s) (AV*)sv_dup((SV*)s)
6723 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6724 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6725 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6726 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6727 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6728 #define io_dup(s) (IO*)sv_dup((SV*)s)
6729 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6730 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6731 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6732 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6733 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6736 Perl_re_dup(pTHX_ REGEXP *r)
6738 /* XXX fix when pmop->op_pmregexp becomes shared */
6739 return ReREFCNT_inc(r);
6743 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6747 return (PerlIO*)NULL;
6749 /* look for it in the table first */
6750 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6754 /* create anew and remember what it is */
6755 ret = PerlIO_fdupopen(fp);
6756 ptr_table_store(PL_ptr_table, fp, ret);
6761 Perl_dirp_dup(pTHX_ DIR *dp)
6770 Perl_gp_dup(pTHX_ GP *gp)
6775 /* look for it in the table first */
6776 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6780 /* create anew and remember what it is */
6781 Newz(0, ret, 1, GP);
6782 ptr_table_store(PL_ptr_table, gp, ret);
6785 ret->gp_refcnt = 0; /* must be before any other dups! */
6786 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6787 ret->gp_io = io_dup_inc(gp->gp_io);
6788 ret->gp_form = cv_dup_inc(gp->gp_form);
6789 ret->gp_av = av_dup_inc(gp->gp_av);
6790 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6791 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6792 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6793 ret->gp_cvgen = gp->gp_cvgen;
6794 ret->gp_flags = gp->gp_flags;
6795 ret->gp_line = gp->gp_line;
6796 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6801 Perl_mg_dup(pTHX_ MAGIC *mg)
6803 MAGIC *mgret = (MAGIC*)NULL;
6806 return (MAGIC*)NULL;
6807 /* look for it in the table first */
6808 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6812 for (; mg; mg = mg->mg_moremagic) {
6814 Newz(0, nmg, 1, MAGIC);
6818 mgprev->mg_moremagic = nmg;
6819 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6820 nmg->mg_private = mg->mg_private;
6821 nmg->mg_type = mg->mg_type;
6822 nmg->mg_flags = mg->mg_flags;
6823 if (mg->mg_type == 'r') {
6824 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6827 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6828 ? sv_dup_inc(mg->mg_obj)
6829 : sv_dup(mg->mg_obj);
6831 nmg->mg_len = mg->mg_len;
6832 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6833 if (mg->mg_ptr && mg->mg_type != 'g') {
6834 if (mg->mg_len >= 0) {
6835 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6836 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6837 AMT *amtp = (AMT*)mg->mg_ptr;
6838 AMT *namtp = (AMT*)nmg->mg_ptr;
6840 for (i = 1; i < NofAMmeth; i++) {
6841 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6845 else if (mg->mg_len == HEf_SVKEY)
6846 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6854 Perl_ptr_table_new(pTHX)
6857 Newz(0, tbl, 1, PTR_TBL_t);
6860 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6865 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6867 PTR_TBL_ENT_t *tblent;
6868 UV hash = PTR2UV(sv);
6870 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6871 for (; tblent; tblent = tblent->next) {
6872 if (tblent->oldval == sv)
6873 return tblent->newval;
6879 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6881 PTR_TBL_ENT_t *tblent, **otblent;
6882 /* XXX this may be pessimal on platforms where pointers aren't good
6883 * hash values e.g. if they grow faster in the most significant
6885 UV hash = PTR2UV(oldv);
6889 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6890 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6891 if (tblent->oldval == oldv) {
6892 tblent->newval = newv;
6897 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6898 tblent->oldval = oldv;
6899 tblent->newval = newv;
6900 tblent->next = *otblent;
6903 if (i && tbl->tbl_items > tbl->tbl_max)
6904 ptr_table_split(tbl);
6908 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6910 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6911 UV oldsize = tbl->tbl_max + 1;
6912 UV newsize = oldsize * 2;
6915 Renew(ary, newsize, PTR_TBL_ENT_t*);
6916 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6917 tbl->tbl_max = --newsize;
6919 for (i=0; i < oldsize; i++, ary++) {
6920 PTR_TBL_ENT_t **curentp, **entp, *ent;
6923 curentp = ary + oldsize;
6924 for (entp = ary, ent = *ary; ent; ent = *entp) {
6925 if ((newsize & PTR2UV(ent->oldval)) != i) {
6927 ent->next = *curentp;
6942 Perl_sv_dup(pTHX_ SV *sstr)
6946 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6948 /* look for it in the table first */
6949 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6953 /* create anew and remember what it is */
6955 ptr_table_store(PL_ptr_table, sstr, dstr);
6958 SvFLAGS(dstr) = SvFLAGS(sstr);
6959 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6960 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6963 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6964 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6965 PL_watch_pvx, SvPVX(sstr));
6968 switch (SvTYPE(sstr)) {
6973 SvANY(dstr) = new_XIV();
6974 SvIVX(dstr) = SvIVX(sstr);
6977 SvANY(dstr) = new_XNV();
6978 SvNVX(dstr) = SvNVX(sstr);
6981 SvANY(dstr) = new_XRV();
6982 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6985 SvANY(dstr) = new_XPV();
6986 SvCUR(dstr) = SvCUR(sstr);
6987 SvLEN(dstr) = SvLEN(sstr);
6989 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6990 else if (SvPVX(sstr) && SvLEN(sstr))
6991 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6993 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6996 SvANY(dstr) = new_XPVIV();
6997 SvCUR(dstr) = SvCUR(sstr);
6998 SvLEN(dstr) = SvLEN(sstr);
6999 SvIVX(dstr) = SvIVX(sstr);
7001 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7002 else if (SvPVX(sstr) && SvLEN(sstr))
7003 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7005 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7008 SvANY(dstr) = new_XPVNV();
7009 SvCUR(dstr) = SvCUR(sstr);
7010 SvLEN(dstr) = SvLEN(sstr);
7011 SvIVX(dstr) = SvIVX(sstr);
7012 SvNVX(dstr) = SvNVX(sstr);
7014 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7015 else if (SvPVX(sstr) && SvLEN(sstr))
7016 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7018 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7021 SvANY(dstr) = new_XPVMG();
7022 SvCUR(dstr) = SvCUR(sstr);
7023 SvLEN(dstr) = SvLEN(sstr);
7024 SvIVX(dstr) = SvIVX(sstr);
7025 SvNVX(dstr) = SvNVX(sstr);
7026 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7027 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7029 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7030 else if (SvPVX(sstr) && SvLEN(sstr))
7031 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7033 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7036 SvANY(dstr) = new_XPVBM();
7037 SvCUR(dstr) = SvCUR(sstr);
7038 SvLEN(dstr) = SvLEN(sstr);
7039 SvIVX(dstr) = SvIVX(sstr);
7040 SvNVX(dstr) = SvNVX(sstr);
7041 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7042 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7044 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7045 else if (SvPVX(sstr) && SvLEN(sstr))
7046 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7048 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7049 BmRARE(dstr) = BmRARE(sstr);
7050 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7051 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7054 SvANY(dstr) = new_XPVLV();
7055 SvCUR(dstr) = SvCUR(sstr);
7056 SvLEN(dstr) = SvLEN(sstr);
7057 SvIVX(dstr) = SvIVX(sstr);
7058 SvNVX(dstr) = SvNVX(sstr);
7059 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7060 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7062 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7063 else if (SvPVX(sstr) && SvLEN(sstr))
7064 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7066 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7067 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7068 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7069 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7070 LvTYPE(dstr) = LvTYPE(sstr);
7073 SvANY(dstr) = new_XPVGV();
7074 SvCUR(dstr) = SvCUR(sstr);
7075 SvLEN(dstr) = SvLEN(sstr);
7076 SvIVX(dstr) = SvIVX(sstr);
7077 SvNVX(dstr) = SvNVX(sstr);
7078 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7079 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7081 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7082 else if (SvPVX(sstr) && SvLEN(sstr))
7083 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7085 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7086 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7087 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7088 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7089 GvFLAGS(dstr) = GvFLAGS(sstr);
7090 GvGP(dstr) = gp_dup(GvGP(sstr));
7091 (void)GpREFCNT_inc(GvGP(dstr));
7094 SvANY(dstr) = new_XPVIO();
7095 SvCUR(dstr) = SvCUR(sstr);
7096 SvLEN(dstr) = SvLEN(sstr);
7097 SvIVX(dstr) = SvIVX(sstr);
7098 SvNVX(dstr) = SvNVX(sstr);
7099 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7100 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7102 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7103 else if (SvPVX(sstr) && SvLEN(sstr))
7104 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7106 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7107 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7108 if (IoOFP(sstr) == IoIFP(sstr))
7109 IoOFP(dstr) = IoIFP(dstr);
7111 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7112 /* PL_rsfp_filters entries have fake IoDIRP() */
7113 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7114 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7116 IoDIRP(dstr) = IoDIRP(sstr);
7117 IoLINES(dstr) = IoLINES(sstr);
7118 IoPAGE(dstr) = IoPAGE(sstr);
7119 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7120 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7121 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7122 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7123 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7124 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7125 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7126 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7127 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7128 IoTYPE(dstr) = IoTYPE(sstr);
7129 IoFLAGS(dstr) = IoFLAGS(sstr);
7132 SvANY(dstr) = new_XPVAV();
7133 SvCUR(dstr) = SvCUR(sstr);
7134 SvLEN(dstr) = SvLEN(sstr);
7135 SvIVX(dstr) = SvIVX(sstr);
7136 SvNVX(dstr) = SvNVX(sstr);
7137 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7138 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7139 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7140 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7141 if (AvARRAY((AV*)sstr)) {
7142 SV **dst_ary, **src_ary;
7143 SSize_t items = AvFILLp((AV*)sstr) + 1;
7145 src_ary = AvARRAY((AV*)sstr);
7146 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7147 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7148 SvPVX(dstr) = (char*)dst_ary;
7149 AvALLOC((AV*)dstr) = dst_ary;
7150 if (AvREAL((AV*)sstr)) {
7152 *dst_ary++ = sv_dup_inc(*src_ary++);
7156 *dst_ary++ = sv_dup(*src_ary++);
7158 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7159 while (items-- > 0) {
7160 *dst_ary++ = &PL_sv_undef;
7164 SvPVX(dstr) = Nullch;
7165 AvALLOC((AV*)dstr) = (SV**)NULL;
7169 SvANY(dstr) = new_XPVHV();
7170 SvCUR(dstr) = SvCUR(sstr);
7171 SvLEN(dstr) = SvLEN(sstr);
7172 SvIVX(dstr) = SvIVX(sstr);
7173 SvNVX(dstr) = SvNVX(sstr);
7174 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7175 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7176 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7177 if (HvARRAY((HV*)sstr)) {
7179 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7180 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7181 Newz(0, dxhv->xhv_array,
7182 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7183 while (i <= sxhv->xhv_max) {
7184 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7185 !!HvSHAREKEYS(sstr));
7188 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7191 SvPVX(dstr) = Nullch;
7192 HvEITER((HV*)dstr) = (HE*)NULL;
7194 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7195 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7198 SvANY(dstr) = new_XPVFM();
7199 FmLINES(dstr) = FmLINES(sstr);
7203 SvANY(dstr) = new_XPVCV();
7205 SvCUR(dstr) = SvCUR(sstr);
7206 SvLEN(dstr) = SvLEN(sstr);
7207 SvIVX(dstr) = SvIVX(sstr);
7208 SvNVX(dstr) = SvNVX(sstr);
7209 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7210 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7211 if (SvPVX(sstr) && SvLEN(sstr))
7212 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7214 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7215 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7216 CvSTART(dstr) = CvSTART(sstr);
7217 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7218 CvXSUB(dstr) = CvXSUB(sstr);
7219 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7220 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7221 CvDEPTH(dstr) = CvDEPTH(sstr);
7222 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7223 /* XXX padlists are real, but pretend to be not */
7224 AvREAL_on(CvPADLIST(sstr));
7225 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7226 AvREAL_off(CvPADLIST(sstr));
7227 AvREAL_off(CvPADLIST(dstr));
7230 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7231 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7232 CvFLAGS(dstr) = CvFLAGS(sstr);
7235 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7239 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7246 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7251 return (PERL_CONTEXT*)NULL;
7253 /* look for it in the table first */
7254 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7258 /* create anew and remember what it is */
7259 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7260 ptr_table_store(PL_ptr_table, cxs, ncxs);
7263 PERL_CONTEXT *cx = &cxs[ix];
7264 PERL_CONTEXT *ncx = &ncxs[ix];
7265 ncx->cx_type = cx->cx_type;
7266 if (CxTYPE(cx) == CXt_SUBST) {
7267 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7270 ncx->blk_oldsp = cx->blk_oldsp;
7271 ncx->blk_oldcop = cx->blk_oldcop;
7272 ncx->blk_oldretsp = cx->blk_oldretsp;
7273 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7274 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7275 ncx->blk_oldpm = cx->blk_oldpm;
7276 ncx->blk_gimme = cx->blk_gimme;
7277 switch (CxTYPE(cx)) {
7279 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7280 ? cv_dup_inc(cx->blk_sub.cv)
7281 : cv_dup(cx->blk_sub.cv));
7282 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7283 ? av_dup_inc(cx->blk_sub.argarray)
7285 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7286 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7287 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7288 ncx->blk_sub.lval = cx->blk_sub.lval;
7291 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7292 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7293 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7294 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7295 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7298 ncx->blk_loop.label = cx->blk_loop.label;
7299 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7300 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7301 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7302 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7303 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7304 ? cx->blk_loop.iterdata
7305 : gv_dup((GV*)cx->blk_loop.iterdata));
7306 ncx->blk_loop.oldcurpad
7307 = (SV**)ptr_table_fetch(PL_ptr_table,
7308 cx->blk_loop.oldcurpad);
7309 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7310 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7311 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7312 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7313 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7316 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7317 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7318 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7319 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7332 Perl_si_dup(pTHX_ PERL_SI *si)
7337 return (PERL_SI*)NULL;
7339 /* look for it in the table first */
7340 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7344 /* create anew and remember what it is */
7345 Newz(56, nsi, 1, PERL_SI);
7346 ptr_table_store(PL_ptr_table, si, nsi);
7348 nsi->si_stack = av_dup_inc(si->si_stack);
7349 nsi->si_cxix = si->si_cxix;
7350 nsi->si_cxmax = si->si_cxmax;
7351 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7352 nsi->si_type = si->si_type;
7353 nsi->si_prev = si_dup(si->si_prev);
7354 nsi->si_next = si_dup(si->si_next);
7355 nsi->si_markoff = si->si_markoff;
7360 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7361 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7362 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7363 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7364 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7365 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7366 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7367 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7368 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7369 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7370 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7371 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7374 #define pv_dup_inc(p) SAVEPV(p)
7375 #define pv_dup(p) SAVEPV(p)
7376 #define svp_dup_inc(p,pp) any_dup(p,pp)
7379 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7386 /* look for it in the table first */
7387 ret = ptr_table_fetch(PL_ptr_table, v);
7391 /* see if it is part of the interpreter structure */
7392 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7393 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7401 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7403 ANY *ss = proto_perl->Tsavestack;
7404 I32 ix = proto_perl->Tsavestack_ix;
7405 I32 max = proto_perl->Tsavestack_max;
7418 void (*dptr) (void*);
7419 void (*dxptr) (pTHXo_ void*);
7422 Newz(54, nss, max, ANY);
7428 case SAVEt_ITEM: /* normal string */
7429 sv = (SV*)POPPTR(ss,ix);
7430 TOPPTR(nss,ix) = sv_dup_inc(sv);
7431 sv = (SV*)POPPTR(ss,ix);
7432 TOPPTR(nss,ix) = sv_dup_inc(sv);
7434 case SAVEt_SV: /* scalar reference */
7435 sv = (SV*)POPPTR(ss,ix);
7436 TOPPTR(nss,ix) = sv_dup_inc(sv);
7437 gv = (GV*)POPPTR(ss,ix);
7438 TOPPTR(nss,ix) = gv_dup_inc(gv);
7440 case SAVEt_GENERIC_PVREF: /* generic char* */
7441 c = (char*)POPPTR(ss,ix);
7442 TOPPTR(nss,ix) = pv_dup(c);
7443 ptr = POPPTR(ss,ix);
7444 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7446 case SAVEt_GENERIC_SVREF: /* generic sv */
7447 case SAVEt_SVREF: /* scalar reference */
7448 sv = (SV*)POPPTR(ss,ix);
7449 TOPPTR(nss,ix) = sv_dup_inc(sv);
7450 ptr = POPPTR(ss,ix);
7451 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7453 case SAVEt_AV: /* array reference */
7454 av = (AV*)POPPTR(ss,ix);
7455 TOPPTR(nss,ix) = av_dup_inc(av);
7456 gv = (GV*)POPPTR(ss,ix);
7457 TOPPTR(nss,ix) = gv_dup(gv);
7459 case SAVEt_HV: /* hash reference */
7460 hv = (HV*)POPPTR(ss,ix);
7461 TOPPTR(nss,ix) = hv_dup_inc(hv);
7462 gv = (GV*)POPPTR(ss,ix);
7463 TOPPTR(nss,ix) = gv_dup(gv);
7465 case SAVEt_INT: /* int reference */
7466 ptr = POPPTR(ss,ix);
7467 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7468 intval = (int)POPINT(ss,ix);
7469 TOPINT(nss,ix) = intval;
7471 case SAVEt_LONG: /* long reference */
7472 ptr = POPPTR(ss,ix);
7473 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7474 longval = (long)POPLONG(ss,ix);
7475 TOPLONG(nss,ix) = longval;
7477 case SAVEt_I32: /* I32 reference */
7478 case SAVEt_I16: /* I16 reference */
7479 case SAVEt_I8: /* I8 reference */
7480 ptr = POPPTR(ss,ix);
7481 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7485 case SAVEt_IV: /* IV reference */
7486 ptr = POPPTR(ss,ix);
7487 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7491 case SAVEt_SPTR: /* SV* reference */
7492 ptr = POPPTR(ss,ix);
7493 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7494 sv = (SV*)POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = sv_dup(sv);
7497 case SAVEt_VPTR: /* random* reference */
7498 ptr = POPPTR(ss,ix);
7499 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7500 ptr = POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7503 case SAVEt_PPTR: /* char* reference */
7504 ptr = POPPTR(ss,ix);
7505 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7506 c = (char*)POPPTR(ss,ix);
7507 TOPPTR(nss,ix) = pv_dup(c);
7509 case SAVEt_HPTR: /* HV* reference */
7510 ptr = POPPTR(ss,ix);
7511 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7512 hv = (HV*)POPPTR(ss,ix);
7513 TOPPTR(nss,ix) = hv_dup(hv);
7515 case SAVEt_APTR: /* AV* reference */
7516 ptr = POPPTR(ss,ix);
7517 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7518 av = (AV*)POPPTR(ss,ix);
7519 TOPPTR(nss,ix) = av_dup(av);
7522 gv = (GV*)POPPTR(ss,ix);
7523 TOPPTR(nss,ix) = gv_dup(gv);
7525 case SAVEt_GP: /* scalar reference */
7526 gp = (GP*)POPPTR(ss,ix);
7527 TOPPTR(nss,ix) = gp = gp_dup(gp);
7528 (void)GpREFCNT_inc(gp);
7529 gv = (GV*)POPPTR(ss,ix);
7530 TOPPTR(nss,ix) = gv_dup_inc(c);
7531 c = (char*)POPPTR(ss,ix);
7532 TOPPTR(nss,ix) = pv_dup(c);
7539 sv = (SV*)POPPTR(ss,ix);
7540 TOPPTR(nss,ix) = sv_dup_inc(sv);
7543 ptr = POPPTR(ss,ix);
7544 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7545 /* these are assumed to be refcounted properly */
7546 switch (((OP*)ptr)->op_type) {
7553 TOPPTR(nss,ix) = ptr;
7558 TOPPTR(nss,ix) = Nullop;
7563 TOPPTR(nss,ix) = Nullop;
7566 c = (char*)POPPTR(ss,ix);
7567 TOPPTR(nss,ix) = pv_dup_inc(c);
7570 longval = POPLONG(ss,ix);
7571 TOPLONG(nss,ix) = longval;
7574 hv = (HV*)POPPTR(ss,ix);
7575 TOPPTR(nss,ix) = hv_dup_inc(hv);
7576 c = (char*)POPPTR(ss,ix);
7577 TOPPTR(nss,ix) = pv_dup_inc(c);
7581 case SAVEt_DESTRUCTOR:
7582 ptr = POPPTR(ss,ix);
7583 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7584 dptr = POPDPTR(ss,ix);
7585 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7587 case SAVEt_DESTRUCTOR_X:
7588 ptr = POPPTR(ss,ix);
7589 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7590 dxptr = POPDXPTR(ss,ix);
7591 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7593 case SAVEt_REGCONTEXT:
7599 case SAVEt_STACK_POS: /* Position on Perl stack */
7603 case SAVEt_AELEM: /* array element */
7604 sv = (SV*)POPPTR(ss,ix);
7605 TOPPTR(nss,ix) = sv_dup_inc(sv);
7608 av = (AV*)POPPTR(ss,ix);
7609 TOPPTR(nss,ix) = av_dup_inc(av);
7611 case SAVEt_HELEM: /* hash element */
7612 sv = (SV*)POPPTR(ss,ix);
7613 TOPPTR(nss,ix) = sv_dup_inc(sv);
7614 sv = (SV*)POPPTR(ss,ix);
7615 TOPPTR(nss,ix) = sv_dup_inc(sv);
7616 hv = (HV*)POPPTR(ss,ix);
7617 TOPPTR(nss,ix) = hv_dup_inc(hv);
7620 ptr = POPPTR(ss,ix);
7621 TOPPTR(nss,ix) = ptr;
7628 av = (AV*)POPPTR(ss,ix);
7629 TOPPTR(nss,ix) = av_dup(av);
7632 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7644 perl_clone(PerlInterpreter *proto_perl, UV flags)
7647 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7650 #ifdef PERL_IMPLICIT_SYS
7651 return perl_clone_using(proto_perl, flags,
7653 proto_perl->IMemShared,
7654 proto_perl->IMemParse,
7664 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7665 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7666 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7667 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7668 struct IPerlDir* ipD, struct IPerlSock* ipS,
7669 struct IPerlProc* ipP)
7671 /* XXX many of the string copies here can be optimized if they're
7672 * constants; they need to be allocated as common memory and just
7673 * their pointers copied. */
7677 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7679 PERL_SET_THX(pPerl);
7680 # else /* !PERL_OBJECT */
7681 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7682 PERL_SET_THX(my_perl);
7685 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7690 # else /* !DEBUGGING */
7691 Zero(my_perl, 1, PerlInterpreter);
7692 # endif /* DEBUGGING */
7696 PL_MemShared = ipMS;
7704 # endif /* PERL_OBJECT */
7705 #else /* !PERL_IMPLICIT_SYS */
7707 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7708 PERL_SET_THX(my_perl);
7711 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7716 # else /* !DEBUGGING */
7717 Zero(my_perl, 1, PerlInterpreter);
7718 # endif /* DEBUGGING */
7719 #endif /* PERL_IMPLICIT_SYS */
7722 PL_xiv_arenaroot = NULL;
7724 PL_xnv_arenaroot = NULL;
7726 PL_xrv_arenaroot = NULL;
7728 PL_xpv_arenaroot = NULL;
7730 PL_xpviv_arenaroot = NULL;
7731 PL_xpviv_root = NULL;
7732 PL_xpvnv_arenaroot = NULL;
7733 PL_xpvnv_root = NULL;
7734 PL_xpvcv_arenaroot = NULL;
7735 PL_xpvcv_root = NULL;
7736 PL_xpvav_arenaroot = NULL;
7737 PL_xpvav_root = NULL;
7738 PL_xpvhv_arenaroot = NULL;
7739 PL_xpvhv_root = NULL;
7740 PL_xpvmg_arenaroot = NULL;
7741 PL_xpvmg_root = NULL;
7742 PL_xpvlv_arenaroot = NULL;
7743 PL_xpvlv_root = NULL;
7744 PL_xpvbm_arenaroot = NULL;
7745 PL_xpvbm_root = NULL;
7746 PL_he_arenaroot = NULL;
7748 PL_nice_chunk = NULL;
7749 PL_nice_chunk_size = 0;
7752 PL_sv_root = Nullsv;
7753 PL_sv_arenaroot = Nullsv;
7755 PL_debug = proto_perl->Idebug;
7757 /* create SV map for pointer relocation */
7758 PL_ptr_table = ptr_table_new();
7760 /* initialize these special pointers as early as possible */
7761 SvANY(&PL_sv_undef) = NULL;
7762 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7763 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7764 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7767 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7769 SvANY(&PL_sv_no) = new_XPVNV();
7771 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7772 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7773 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7774 SvCUR(&PL_sv_no) = 0;
7775 SvLEN(&PL_sv_no) = 1;
7776 SvNVX(&PL_sv_no) = 0;
7777 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7780 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7782 SvANY(&PL_sv_yes) = new_XPVNV();
7784 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7785 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7786 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7787 SvCUR(&PL_sv_yes) = 1;
7788 SvLEN(&PL_sv_yes) = 2;
7789 SvNVX(&PL_sv_yes) = 1;
7790 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7792 /* create shared string table */
7793 PL_strtab = newHV();
7794 HvSHAREKEYS_off(PL_strtab);
7795 hv_ksplit(PL_strtab, 512);
7796 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7798 PL_compiling = proto_perl->Icompiling;
7799 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7800 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7801 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7802 if (!specialWARN(PL_compiling.cop_warnings))
7803 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7804 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7806 /* pseudo environmental stuff */
7807 PL_origargc = proto_perl->Iorigargc;
7809 New(0, PL_origargv, i+1, char*);
7810 PL_origargv[i] = '\0';
7812 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7814 PL_envgv = gv_dup(proto_perl->Ienvgv);
7815 PL_incgv = gv_dup(proto_perl->Iincgv);
7816 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7817 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7818 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7819 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7822 PL_minus_c = proto_perl->Iminus_c;
7823 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7824 PL_localpatches = proto_perl->Ilocalpatches;
7825 PL_splitstr = proto_perl->Isplitstr;
7826 PL_preprocess = proto_perl->Ipreprocess;
7827 PL_minus_n = proto_perl->Iminus_n;
7828 PL_minus_p = proto_perl->Iminus_p;
7829 PL_minus_l = proto_perl->Iminus_l;
7830 PL_minus_a = proto_perl->Iminus_a;
7831 PL_minus_F = proto_perl->Iminus_F;
7832 PL_doswitches = proto_perl->Idoswitches;
7833 PL_dowarn = proto_perl->Idowarn;
7834 PL_doextract = proto_perl->Idoextract;
7835 PL_sawampersand = proto_perl->Isawampersand;
7836 PL_unsafe = proto_perl->Iunsafe;
7837 PL_inplace = SAVEPV(proto_perl->Iinplace);
7838 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7839 PL_perldb = proto_perl->Iperldb;
7840 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7842 /* magical thingies */
7843 /* XXX time(&PL_basetime) when asked for? */
7844 PL_basetime = proto_perl->Ibasetime;
7845 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7847 PL_maxsysfd = proto_perl->Imaxsysfd;
7848 PL_multiline = proto_perl->Imultiline;
7849 PL_statusvalue = proto_perl->Istatusvalue;
7851 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7854 /* shortcuts to various I/O objects */
7855 PL_stdingv = gv_dup(proto_perl->Istdingv);
7856 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7857 PL_defgv = gv_dup(proto_perl->Idefgv);
7858 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7859 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7860 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7862 /* shortcuts to regexp stuff */
7863 PL_replgv = gv_dup(proto_perl->Ireplgv);
7865 /* shortcuts to misc objects */
7866 PL_errgv = gv_dup(proto_perl->Ierrgv);
7868 /* shortcuts to debugging objects */
7869 PL_DBgv = gv_dup(proto_perl->IDBgv);
7870 PL_DBline = gv_dup(proto_perl->IDBline);
7871 PL_DBsub = gv_dup(proto_perl->IDBsub);
7872 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7873 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7874 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7875 PL_lineary = av_dup(proto_perl->Ilineary);
7876 PL_dbargs = av_dup(proto_perl->Idbargs);
7879 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7880 PL_curstash = hv_dup(proto_perl->Tcurstash);
7881 PL_debstash = hv_dup(proto_perl->Idebstash);
7882 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7883 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7885 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7886 PL_endav = av_dup_inc(proto_perl->Iendav);
7887 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7888 PL_initav = av_dup_inc(proto_perl->Iinitav);
7890 PL_sub_generation = proto_perl->Isub_generation;
7892 /* funky return mechanisms */
7893 PL_forkprocess = proto_perl->Iforkprocess;
7895 /* subprocess state */
7896 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7898 /* internal state */
7899 PL_tainting = proto_perl->Itainting;
7900 PL_maxo = proto_perl->Imaxo;
7901 if (proto_perl->Iop_mask)
7902 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7904 PL_op_mask = Nullch;
7906 /* current interpreter roots */
7907 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7908 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7909 PL_main_start = proto_perl->Imain_start;
7910 PL_eval_root = proto_perl->Ieval_root;
7911 PL_eval_start = proto_perl->Ieval_start;
7913 /* runtime control stuff */
7914 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7915 PL_copline = proto_perl->Icopline;
7917 PL_filemode = proto_perl->Ifilemode;
7918 PL_lastfd = proto_perl->Ilastfd;
7919 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7922 PL_gensym = proto_perl->Igensym;
7923 PL_preambled = proto_perl->Ipreambled;
7924 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7925 PL_laststatval = proto_perl->Ilaststatval;
7926 PL_laststype = proto_perl->Ilaststype;
7927 PL_mess_sv = Nullsv;
7929 PL_orslen = proto_perl->Iorslen;
7930 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7931 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7933 /* interpreter atexit processing */
7934 PL_exitlistlen = proto_perl->Iexitlistlen;
7935 if (PL_exitlistlen) {
7936 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7937 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7940 PL_exitlist = (PerlExitListEntry*)NULL;
7941 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7943 PL_profiledata = NULL;
7944 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7945 /* PL_rsfp_filters entries have fake IoDIRP() */
7946 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7948 PL_compcv = cv_dup(proto_perl->Icompcv);
7949 PL_comppad = av_dup(proto_perl->Icomppad);
7950 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7951 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7952 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7953 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7954 proto_perl->Tcurpad);
7956 #ifdef HAVE_INTERP_INTERN
7957 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7960 /* more statics moved here */
7961 PL_generation = proto_perl->Igeneration;
7962 PL_DBcv = cv_dup(proto_perl->IDBcv);
7964 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7965 PL_in_clean_all = proto_perl->Iin_clean_all;
7967 PL_uid = proto_perl->Iuid;
7968 PL_euid = proto_perl->Ieuid;
7969 PL_gid = proto_perl->Igid;
7970 PL_egid = proto_perl->Iegid;
7971 PL_nomemok = proto_perl->Inomemok;
7972 PL_an = proto_perl->Ian;
7973 PL_cop_seqmax = proto_perl->Icop_seqmax;
7974 PL_op_seqmax = proto_perl->Iop_seqmax;
7975 PL_evalseq = proto_perl->Ievalseq;
7976 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7977 PL_origalen = proto_perl->Iorigalen;
7978 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7979 PL_osname = SAVEPV(proto_perl->Iosname);
7980 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7981 PL_sighandlerp = proto_perl->Isighandlerp;
7984 PL_runops = proto_perl->Irunops;
7986 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7989 PL_cshlen = proto_perl->Icshlen;
7990 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7993 PL_lex_state = proto_perl->Ilex_state;
7994 PL_lex_defer = proto_perl->Ilex_defer;
7995 PL_lex_expect = proto_perl->Ilex_expect;
7996 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7997 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7998 PL_lex_starts = proto_perl->Ilex_starts;
7999 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8000 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8001 PL_lex_op = proto_perl->Ilex_op;
8002 PL_lex_inpat = proto_perl->Ilex_inpat;
8003 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8004 PL_lex_brackets = proto_perl->Ilex_brackets;
8005 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8006 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8007 PL_lex_casemods = proto_perl->Ilex_casemods;
8008 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8009 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8011 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8012 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8013 PL_nexttoke = proto_perl->Inexttoke;
8015 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8016 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8017 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8018 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8019 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8020 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8021 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8022 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8023 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8024 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8025 PL_pending_ident = proto_perl->Ipending_ident;
8026 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8028 PL_expect = proto_perl->Iexpect;
8030 PL_multi_start = proto_perl->Imulti_start;
8031 PL_multi_end = proto_perl->Imulti_end;
8032 PL_multi_open = proto_perl->Imulti_open;
8033 PL_multi_close = proto_perl->Imulti_close;
8035 PL_error_count = proto_perl->Ierror_count;
8036 PL_subline = proto_perl->Isubline;
8037 PL_subname = sv_dup_inc(proto_perl->Isubname);
8039 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8040 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8041 PL_padix = proto_perl->Ipadix;
8042 PL_padix_floor = proto_perl->Ipadix_floor;
8043 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8045 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8046 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8047 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8048 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8049 PL_last_lop_op = proto_perl->Ilast_lop_op;
8050 PL_in_my = proto_perl->Iin_my;
8051 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8053 PL_cryptseen = proto_perl->Icryptseen;
8056 PL_hints = proto_perl->Ihints;
8058 PL_amagic_generation = proto_perl->Iamagic_generation;
8060 #ifdef USE_LOCALE_COLLATE
8061 PL_collation_ix = proto_perl->Icollation_ix;
8062 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8063 PL_collation_standard = proto_perl->Icollation_standard;
8064 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8065 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8066 #endif /* USE_LOCALE_COLLATE */
8068 #ifdef USE_LOCALE_NUMERIC
8069 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8070 PL_numeric_standard = proto_perl->Inumeric_standard;
8071 PL_numeric_local = proto_perl->Inumeric_local;
8072 PL_numeric_radix = proto_perl->Inumeric_radix;
8073 #endif /* !USE_LOCALE_NUMERIC */
8075 /* utf8 character classes */
8076 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8077 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8078 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8079 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8080 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8081 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8082 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8083 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8084 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8085 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8086 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8087 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8088 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8089 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8090 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8091 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8092 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8095 PL_last_swash_hv = Nullhv; /* reinits on demand */
8096 PL_last_swash_klen = 0;
8097 PL_last_swash_key[0]= '\0';
8098 PL_last_swash_tmps = (U8*)NULL;
8099 PL_last_swash_slen = 0;
8101 /* perly.c globals */
8102 PL_yydebug = proto_perl->Iyydebug;
8103 PL_yynerrs = proto_perl->Iyynerrs;
8104 PL_yyerrflag = proto_perl->Iyyerrflag;
8105 PL_yychar = proto_perl->Iyychar;
8106 PL_yyval = proto_perl->Iyyval;
8107 PL_yylval = proto_perl->Iyylval;
8109 PL_glob_index = proto_perl->Iglob_index;
8110 PL_srand_called = proto_perl->Isrand_called;
8111 PL_uudmap['M'] = 0; /* reinits on demand */
8112 PL_bitcount = Nullch; /* reinits on demand */
8114 if (proto_perl->Ipsig_ptr) {
8115 int sig_num[] = { SIG_NUM };
8116 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8117 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8118 for (i = 1; PL_sig_name[i]; i++) {
8119 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8120 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8124 PL_psig_ptr = (SV**)NULL;
8125 PL_psig_name = (SV**)NULL;
8128 /* thrdvar.h stuff */
8131 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8132 PL_tmps_ix = proto_perl->Ttmps_ix;
8133 PL_tmps_max = proto_perl->Ttmps_max;
8134 PL_tmps_floor = proto_perl->Ttmps_floor;
8135 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8137 while (i <= PL_tmps_ix) {
8138 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8142 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8143 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8144 Newz(54, PL_markstack, i, I32);
8145 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8146 - proto_perl->Tmarkstack);
8147 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8148 - proto_perl->Tmarkstack);
8149 Copy(proto_perl->Tmarkstack, PL_markstack,
8150 PL_markstack_ptr - PL_markstack + 1, I32);
8152 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8153 * NOTE: unlike the others! */
8154 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8155 PL_scopestack_max = proto_perl->Tscopestack_max;
8156 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8157 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8159 /* next push_return() sets PL_retstack[PL_retstack_ix]
8160 * NOTE: unlike the others! */
8161 PL_retstack_ix = proto_perl->Tretstack_ix;
8162 PL_retstack_max = proto_perl->Tretstack_max;
8163 Newz(54, PL_retstack, PL_retstack_max, OP*);
8164 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8166 /* NOTE: si_dup() looks at PL_markstack */
8167 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8169 /* PL_curstack = PL_curstackinfo->si_stack; */
8170 PL_curstack = av_dup(proto_perl->Tcurstack);
8171 PL_mainstack = av_dup(proto_perl->Tmainstack);
8173 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8174 PL_stack_base = AvARRAY(PL_curstack);
8175 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8176 - proto_perl->Tstack_base);
8177 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8179 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8180 * NOTE: unlike the others! */
8181 PL_savestack_ix = proto_perl->Tsavestack_ix;
8182 PL_savestack_max = proto_perl->Tsavestack_max;
8183 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8184 PL_savestack = ss_dup(proto_perl);
8188 ENTER; /* perl_destruct() wants to LEAVE; */
8191 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8192 PL_top_env = &PL_start_env;
8194 PL_op = proto_perl->Top;
8197 PL_Xpv = (XPV*)NULL;
8198 PL_na = proto_perl->Tna;
8200 PL_statbuf = proto_perl->Tstatbuf;
8201 PL_statcache = proto_perl->Tstatcache;
8202 PL_statgv = gv_dup(proto_perl->Tstatgv);
8203 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8205 PL_timesbuf = proto_perl->Ttimesbuf;
8208 PL_tainted = proto_perl->Ttainted;
8209 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8210 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8211 PL_rs = sv_dup_inc(proto_perl->Trs);
8212 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8213 PL_ofslen = proto_perl->Tofslen;
8214 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8215 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8216 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8217 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8218 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8219 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8221 PL_restartop = proto_perl->Trestartop;
8222 PL_in_eval = proto_perl->Tin_eval;
8223 PL_delaymagic = proto_perl->Tdelaymagic;
8224 PL_dirty = proto_perl->Tdirty;
8225 PL_localizing = proto_perl->Tlocalizing;
8227 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8228 PL_protect = proto_perl->Tprotect;
8230 PL_errors = sv_dup_inc(proto_perl->Terrors);
8231 PL_av_fetch_sv = Nullsv;
8232 PL_hv_fetch_sv = Nullsv;
8233 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8234 PL_modcount = proto_perl->Tmodcount;
8235 PL_lastgotoprobe = Nullop;
8236 PL_dumpindent = proto_perl->Tdumpindent;
8238 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8239 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8240 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8241 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8242 PL_sortcxix = proto_perl->Tsortcxix;
8243 PL_efloatbuf = Nullch; /* reinits on demand */
8244 PL_efloatsize = 0; /* reinits on demand */
8248 PL_screamfirst = NULL;
8249 PL_screamnext = NULL;
8250 PL_maxscream = -1; /* reinits on demand */
8251 PL_lastscream = Nullsv;
8253 PL_watchaddr = NULL;
8254 PL_watchok = Nullch;
8256 PL_regdummy = proto_perl->Tregdummy;
8257 PL_regcomp_parse = Nullch;
8258 PL_regxend = Nullch;
8259 PL_regcode = (regnode*)NULL;
8262 PL_regprecomp = Nullch;
8267 PL_seen_zerolen = 0;
8269 PL_regcomp_rx = (regexp*)NULL;
8271 PL_colorset = 0; /* reinits PL_colors[] */
8272 /*PL_colors[6] = {0,0,0,0,0,0};*/
8273 PL_reg_whilem_seen = 0;
8274 PL_reginput = Nullch;
8277 PL_regstartp = (I32*)NULL;
8278 PL_regendp = (I32*)NULL;
8279 PL_reglastparen = (U32*)NULL;
8280 PL_regtill = Nullch;
8282 PL_reg_start_tmp = (char**)NULL;
8283 PL_reg_start_tmpl = 0;
8284 PL_regdata = (struct reg_data*)NULL;
8287 PL_reg_eval_set = 0;
8289 PL_regprogram = (regnode*)NULL;
8291 PL_regcc = (CURCUR*)NULL;
8292 PL_reg_call_cc = (struct re_cc_state*)NULL;
8293 PL_reg_re = (regexp*)NULL;
8294 PL_reg_ganch = Nullch;
8296 PL_reg_magic = (MAGIC*)NULL;
8298 PL_reg_oldcurpm = (PMOP*)NULL;
8299 PL_reg_curpm = (PMOP*)NULL;
8300 PL_reg_oldsaved = Nullch;
8301 PL_reg_oldsavedlen = 0;
8303 PL_reg_leftiter = 0;
8304 PL_reg_poscache = Nullch;
8305 PL_reg_poscache_size= 0;
8307 /* RE engine - function pointers */
8308 PL_regcompp = proto_perl->Tregcompp;
8309 PL_regexecp = proto_perl->Tregexecp;
8310 PL_regint_start = proto_perl->Tregint_start;
8311 PL_regint_string = proto_perl->Tregint_string;
8312 PL_regfree = proto_perl->Tregfree;
8314 PL_reginterp_cnt = 0;
8315 PL_reg_starttry = 0;
8318 return (PerlInterpreter*)pPerl;
8324 #else /* !USE_ITHREADS */
8330 #endif /* USE_ITHREADS */
8333 do_report_used(pTHXo_ SV *sv)
8335 if (SvTYPE(sv) != SVTYPEMASK) {
8336 PerlIO_printf(Perl_debug_log, "****\n");
8342 do_clean_objs(pTHXo_ SV *sv)
8346 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8347 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8348 if (SvWEAKREF(sv)) {
8359 /* XXX Might want to check arrays, etc. */
8362 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8364 do_clean_named_objs(pTHXo_ SV *sv)
8366 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8367 if ( SvOBJECT(GvSV(sv)) ||
8368 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8369 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8370 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8371 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8373 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8381 do_clean_all(pTHXo_ SV *sv)
8383 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8384 SvFLAGS(sv) |= SVf_BREAK;