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) && SvFAKE(sv)) {
1501 sv_force_normal(sv);
1503 if (SvREADONLY(sv) && !SvOK(sv)) {
1505 if (ckWARN(WARN_UNINITIALIZED))
1512 return (IV)(SvUVX(sv));
1519 /* We can cache the IV/UV value even if it not good enough
1520 * to reconstruct NV, since the conversion to PV will prefer
1524 if (SvTYPE(sv) == SVt_NV)
1525 sv_upgrade(sv, SVt_PVNV);
1528 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1529 SvIVX(sv) = I_V(SvNVX(sv));
1531 SvUVX(sv) = U_V(SvNVX(sv));
1534 DEBUG_c(PerlIO_printf(Perl_debug_log,
1535 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1539 return (IV)SvUVX(sv);
1542 else if (SvPOKp(sv) && SvLEN(sv)) {
1543 I32 numtype = looks_like_number(sv);
1545 /* We want to avoid a possible problem when we cache an IV which
1546 may be later translated to an NV, and the resulting NV is not
1547 the translation of the initial data.
1549 This means that if we cache such an IV, we need to cache the
1550 NV as well. Moreover, we trade speed for space, and do not
1551 cache the NV if not needed.
1553 if (numtype & IS_NUMBER_NOT_IV) {
1554 /* May be not an integer. Need to cache NV if we cache IV
1555 * - otherwise future conversion to NV will be wrong. */
1558 d = Atof(SvPVX(sv));
1560 if (SvTYPE(sv) < SVt_PVNV)
1561 sv_upgrade(sv, SVt_PVNV);
1565 #if defined(USE_LONG_DOUBLE)
1566 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1567 PTR2UV(sv), SvNVX(sv)));
1569 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1570 PTR2UV(sv), SvNVX(sv)));
1572 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1573 SvIVX(sv) = I_V(SvNVX(sv));
1575 SvUVX(sv) = U_V(SvNVX(sv));
1580 else { /* The NV may be reconstructed from IV - safe to cache IV,
1581 which may be calculated by atol(). */
1582 if (SvTYPE(sv) < SVt_PVIV)
1583 sv_upgrade(sv, SVt_PVIV);
1585 SvIVX(sv) = Atol(SvPVX(sv));
1586 if (! numtype && ckWARN(WARN_NUMERIC))
1592 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1594 if (SvTYPE(sv) < SVt_IV)
1595 /* Typically the caller expects that sv_any is not NULL now. */
1596 sv_upgrade(sv, SVt_IV);
1599 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1600 PTR2UV(sv),SvIVX(sv)));
1601 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1605 Perl_sv_2uv(pTHX_ register SV *sv)
1609 if (SvGMAGICAL(sv)) {
1614 return U_V(SvNVX(sv));
1615 if (SvPOKp(sv) && SvLEN(sv))
1618 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1620 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1626 if (SvTHINKFIRST(sv)) {
1629 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1630 (SvRV(tmpstr) != SvRV(sv)))
1631 return SvUV(tmpstr);
1632 return PTR2UV(SvRV(sv));
1634 if (SvREADONLY(sv) && !SvOK(sv)) {
1636 if (ckWARN(WARN_UNINITIALIZED))
1646 return (UV)SvIVX(sv);
1650 /* We can cache the IV/UV value even if it not good enough
1651 * to reconstruct NV, since the conversion to PV will prefer
1654 if (SvTYPE(sv) == SVt_NV)
1655 sv_upgrade(sv, SVt_PVNV);
1657 if (SvNVX(sv) >= -0.5) {
1659 SvUVX(sv) = U_V(SvNVX(sv));
1662 SvIVX(sv) = I_V(SvNVX(sv));
1664 DEBUG_c(PerlIO_printf(Perl_debug_log,
1665 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1668 (IV)(UV)SvIVX(sv)));
1669 return (UV)SvIVX(sv);
1672 else if (SvPOKp(sv) && SvLEN(sv)) {
1673 I32 numtype = looks_like_number(sv);
1675 /* We want to avoid a possible problem when we cache a UV which
1676 may be later translated to an NV, and the resulting NV is not
1677 the translation of the initial data.
1679 This means that if we cache such a UV, we need to cache the
1680 NV as well. Moreover, we trade speed for space, and do not
1681 cache the NV if not needed.
1683 if (numtype & IS_NUMBER_NOT_IV) {
1684 /* May be not an integer. Need to cache NV if we cache IV
1685 * - otherwise future conversion to NV will be wrong. */
1688 d = Atof(SvPVX(sv));
1690 if (SvTYPE(sv) < SVt_PVNV)
1691 sv_upgrade(sv, SVt_PVNV);
1695 #if defined(USE_LONG_DOUBLE)
1696 DEBUG_c(PerlIO_printf(Perl_debug_log,
1697 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1698 PTR2UV(sv), SvNVX(sv)));
1700 DEBUG_c(PerlIO_printf(Perl_debug_log,
1701 "0x%"UVxf" 2nv(%g)\n",
1702 PTR2UV(sv), SvNVX(sv)));
1704 if (SvNVX(sv) < -0.5) {
1705 SvIVX(sv) = I_V(SvNVX(sv));
1708 SvUVX(sv) = U_V(SvNVX(sv));
1712 else if (numtype & IS_NUMBER_NEG) {
1713 /* The NV may be reconstructed from IV - safe to cache IV,
1714 which may be calculated by atol(). */
1715 if (SvTYPE(sv) == SVt_PV)
1716 sv_upgrade(sv, SVt_PVIV);
1718 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1720 else if (numtype) { /* Non-negative */
1721 /* The NV may be reconstructed from UV - safe to cache UV,
1722 which may be calculated by strtoul()/atol. */
1723 if (SvTYPE(sv) == SVt_PV)
1724 sv_upgrade(sv, SVt_PVIV);
1726 (void)SvIsUV_on(sv);
1728 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1729 #else /* no atou(), but we know the number fits into IV... */
1730 /* The only problem may be if it is negative... */
1731 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1734 else { /* Not a number. Cache 0. */
1737 if (SvTYPE(sv) < SVt_PVIV)
1738 sv_upgrade(sv, SVt_PVIV);
1740 (void)SvIsUV_on(sv);
1741 SvUVX(sv) = 0; /* We assume that 0s have the
1742 same bitmap in IV and UV. */
1743 if (ckWARN(WARN_NUMERIC))
1748 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1750 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1753 if (SvTYPE(sv) < SVt_IV)
1754 /* Typically the caller expects that sv_any is not NULL now. */
1755 sv_upgrade(sv, SVt_IV);
1759 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1760 PTR2UV(sv),SvUVX(sv)));
1761 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1765 Perl_sv_2nv(pTHX_ register SV *sv)
1769 if (SvGMAGICAL(sv)) {
1773 if (SvPOKp(sv) && SvLEN(sv)) {
1775 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1777 return Atof(SvPVX(sv));
1781 return (NV)SvUVX(sv);
1783 return (NV)SvIVX(sv);
1786 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1788 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1794 if (SvTHINKFIRST(sv)) {
1797 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1798 (SvRV(tmpstr) != SvRV(sv)))
1799 return SvNV(tmpstr);
1800 return PTR2NV(SvRV(sv));
1802 if (SvREADONLY(sv) && !SvOK(sv)) {
1804 if (ckWARN(WARN_UNINITIALIZED))
1809 if (SvTYPE(sv) < SVt_NV) {
1810 if (SvTYPE(sv) == SVt_IV)
1811 sv_upgrade(sv, SVt_PVNV);
1813 sv_upgrade(sv, SVt_NV);
1814 #if defined(USE_LONG_DOUBLE)
1816 STORE_NUMERIC_LOCAL_SET_STANDARD();
1817 PerlIO_printf(Perl_debug_log,
1818 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1819 PTR2UV(sv), SvNVX(sv));
1820 RESTORE_NUMERIC_LOCAL();
1824 STORE_NUMERIC_LOCAL_SET_STANDARD();
1825 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1826 PTR2UV(sv), SvNVX(sv));
1827 RESTORE_NUMERIC_LOCAL();
1831 else if (SvTYPE(sv) < SVt_PVNV)
1832 sv_upgrade(sv, SVt_PVNV);
1834 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1836 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1838 else if (SvPOKp(sv) && SvLEN(sv)) {
1840 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1842 SvNVX(sv) = Atof(SvPVX(sv));
1846 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1848 if (SvTYPE(sv) < SVt_NV)
1849 /* Typically the caller expects that sv_any is not NULL now. */
1850 sv_upgrade(sv, SVt_NV);
1854 #if defined(USE_LONG_DOUBLE)
1856 STORE_NUMERIC_LOCAL_SET_STANDARD();
1857 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1858 PTR2UV(sv), SvNVX(sv));
1859 RESTORE_NUMERIC_LOCAL();
1863 STORE_NUMERIC_LOCAL_SET_STANDARD();
1864 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1865 PTR2UV(sv), SvNVX(sv));
1866 RESTORE_NUMERIC_LOCAL();
1873 S_asIV(pTHX_ SV *sv)
1875 I32 numtype = looks_like_number(sv);
1878 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1879 return Atol(SvPVX(sv));
1882 if (ckWARN(WARN_NUMERIC))
1885 d = Atof(SvPVX(sv));
1890 S_asUV(pTHX_ SV *sv)
1892 I32 numtype = looks_like_number(sv);
1895 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1896 return Strtoul(SvPVX(sv), Null(char**), 10);
1900 if (ckWARN(WARN_NUMERIC))
1903 return U_V(Atof(SvPVX(sv)));
1907 * Returns a combination of (advisory only - can get false negatives)
1908 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1910 * 0 if does not look like number.
1912 * In fact possible values are 0 and
1913 * IS_NUMBER_TO_INT_BY_ATOL 123
1914 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1915 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1916 * IS_NUMBER_INFINITY
1917 * with a possible addition of IS_NUMBER_NEG.
1921 =for apidoc looks_like_number
1923 Test if an the content of an SV looks like a number (or is a
1930 Perl_looks_like_number(pTHX_ SV *sv)
1933 register char *send;
1934 register char *sbegin;
1935 register char *nbegin;
1944 else if (SvPOKp(sv))
1945 sbegin = SvPV(sv, len);
1948 send = sbegin + len;
1955 numtype = IS_NUMBER_NEG;
1962 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1963 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1967 /* next must be digit or the radix separator or beginning of infinity */
1971 } while (isDIGIT(*s));
1973 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1974 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1976 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1979 #ifdef USE_LOCALE_NUMERIC
1980 || IS_NUMERIC_RADIX(*s)
1984 numtype |= IS_NUMBER_NOT_IV;
1985 while (isDIGIT(*s)) /* optional digits after the radix */
1990 #ifdef USE_LOCALE_NUMERIC
1991 || IS_NUMERIC_RADIX(*s)
1995 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1996 /* no digits before the radix means we need digits after it */
2000 } while (isDIGIT(*s));
2005 else if (*s == 'I' || *s == 'i') {
2006 s++; if (*s != 'N' && *s != 'n') return 0;
2007 s++; if (*s != 'F' && *s != 'f') return 0;
2008 s++; if (*s == 'I' || *s == 'i') {
2009 s++; if (*s != 'N' && *s != 'n') return 0;
2010 s++; if (*s != 'I' && *s != 'i') return 0;
2011 s++; if (*s != 'T' && *s != 't') return 0;
2012 s++; if (*s != 'Y' && *s != 'y') return 0;
2020 numtype = IS_NUMBER_INFINITY;
2022 /* we can have an optional exponent part */
2023 if (*s == 'e' || *s == 'E') {
2024 numtype &= ~IS_NUMBER_NEG;
2025 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2027 if (*s == '+' || *s == '-')
2032 } while (isDIGIT(*s));
2042 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2043 return IS_NUMBER_TO_INT_BY_ATOL;
2048 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2051 return sv_2pv(sv, &n_a);
2054 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2056 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2058 char *ptr = buf + TYPE_CHARS(UV);
2072 *--ptr = '0' + (uv % 10);
2081 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2086 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2087 char *tmpbuf = tbuf;
2093 if (SvGMAGICAL(sv)) {
2101 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2103 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2108 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2113 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2115 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2122 if (SvTHINKFIRST(sv)) {
2125 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2126 (SvRV(tmpstr) != SvRV(sv)))
2127 return SvPV(tmpstr,*lp);
2134 switch (SvTYPE(sv)) {
2136 if ( ((SvFLAGS(sv) &
2137 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2138 == (SVs_OBJECT|SVs_RMG))
2139 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2140 && (mg = mg_find(sv, 'r'))) {
2142 regexp *re = (regexp *)mg->mg_obj;
2145 char *fptr = "msix";
2150 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2152 while((ch = *fptr++)) {
2154 reflags[left++] = ch;
2157 reflags[right--] = ch;
2162 reflags[left] = '-';
2166 mg->mg_len = re->prelen + 4 + left;
2167 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2168 Copy("(?", mg->mg_ptr, 2, char);
2169 Copy(reflags, mg->mg_ptr+2, left, char);
2170 Copy(":", mg->mg_ptr+left+2, 1, char);
2171 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2172 mg->mg_ptr[mg->mg_len - 1] = ')';
2173 mg->mg_ptr[mg->mg_len] = 0;
2175 PL_reginterp_cnt += re->program[0].next_off;
2187 case SVt_PVBM: if (SvROK(sv))
2190 s = "SCALAR"; break;
2191 case SVt_PVLV: s = "LVALUE"; break;
2192 case SVt_PVAV: s = "ARRAY"; break;
2193 case SVt_PVHV: s = "HASH"; break;
2194 case SVt_PVCV: s = "CODE"; break;
2195 case SVt_PVGV: s = "GLOB"; break;
2196 case SVt_PVFM: s = "FORMAT"; break;
2197 case SVt_PVIO: s = "IO"; break;
2198 default: s = "UNKNOWN"; break;
2202 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2205 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2211 if (SvREADONLY(sv) && !SvOK(sv)) {
2213 if (ckWARN(WARN_UNINITIALIZED))
2219 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2220 /* XXXX 64-bit? IV may have better precision... */
2221 /* I tried changing this to be 64-bit-aware and
2222 * the t/op/numconvert.t became very, very, angry.
2224 if (SvTYPE(sv) < SVt_PVNV)
2225 sv_upgrade(sv, SVt_PVNV);
2226 /* The +20 is pure guesswork. Configure test needed. --jhi */
2227 SvGROW(sv, NV_DIG + 20);
2229 olderrno = errno; /* some Xenix systems wipe out errno here */
2231 if (SvNVX(sv) == 0.0)
2232 (void)strcpy(s,"0");
2236 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2239 #ifdef FIXNEGATIVEZERO
2240 if (*s == '-' && s[1] == '0' && !s[2])
2249 else if (SvIOKp(sv)) {
2250 U32 isIOK = SvIOK(sv);
2251 U32 isUIOK = SvIsUV(sv);
2252 char buf[TYPE_CHARS(UV)];
2255 if (SvTYPE(sv) < SVt_PVIV)
2256 sv_upgrade(sv, SVt_PVIV);
2258 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2260 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2261 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2262 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2263 SvCUR_set(sv, ebuf - ptr);
2276 if (ckWARN(WARN_UNINITIALIZED)
2277 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2282 if (SvTYPE(sv) < SVt_PV)
2283 /* Typically the caller expects that sv_any is not NULL now. */
2284 sv_upgrade(sv, SVt_PV);
2287 *lp = s - SvPVX(sv);
2290 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2291 PTR2UV(sv),SvPVX(sv)));
2295 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2296 /* Sneaky stuff here */
2300 tsv = newSVpv(tmpbuf, 0);
2316 len = strlen(tmpbuf);
2318 #ifdef FIXNEGATIVEZERO
2319 if (len == 2 && t[0] == '-' && t[1] == '0') {
2324 (void)SvUPGRADE(sv, SVt_PV);
2326 s = SvGROW(sv, len + 1);
2335 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2338 return sv_2pvbyte(sv, &n_a);
2342 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2344 return sv_2pv(sv,lp);
2348 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2351 return sv_2pvutf8(sv, &n_a);
2355 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2357 sv_utf8_upgrade(sv);
2358 return sv_2pv(sv,lp);
2361 /* This function is only called on magical items */
2363 Perl_sv_2bool(pTHX_ register SV *sv)
2373 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2374 (SvRV(tmpsv) != SvRV(sv)))
2375 return SvTRUE(tmpsv);
2376 return SvRV(sv) != 0;
2379 register XPV* Xpvtmp;
2380 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2381 (*Xpvtmp->xpv_pv > '0' ||
2382 Xpvtmp->xpv_cur > 1 ||
2383 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2390 return SvIVX(sv) != 0;
2393 return SvNVX(sv) != 0.0;
2401 =for apidoc sv_utf8_upgrade
2403 Convert the PV of an SV to its UTF8-encoded form.
2409 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2414 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2417 /* This function could be much more efficient if we had a FLAG in SVs
2418 * to signal if there are any hibit chars in the PV.
2420 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2425 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2426 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2427 SvCUR(sv) = len - 1;
2428 SvLEN(sv) = len; /* No longer know the real size. */
2430 Safefree(s); /* No longer using what was there before. */
2435 =for apidoc sv_utf8_downgrade
2437 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2438 This may not be possible if the PV contains non-byte encoding characters;
2439 if this is the case, either returns false or, if C<fail_ok> is not
2446 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2448 if (SvPOK(sv) && SvUTF8(sv)) {
2449 char *c = SvPVX(sv);
2450 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
2451 if (!utf8_to_bytes((U8*)c, &len)) {
2456 Perl_croak(aTHX_ "Wide character in %s",
2457 PL_op_desc[PL_op->op_type]);
2459 Perl_croak(aTHX_ "Wide character");
2462 SvCUR(sv) = len - 1;
2469 =for apidoc sv_utf8_encode
2471 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2472 flag so that it looks like bytes again. Nothing calls this.
2478 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2480 sv_utf8_upgrade(sv);
2485 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2489 bool has_utf = FALSE;
2490 if (!sv_utf8_downgrade(sv, TRUE))
2493 /* it is actually just a matter of turning the utf8 flag on, but
2494 * we want to make sure everything inside is valid utf8 first.
2497 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2500 while (c < SvEND(sv)) {
2511 /* Note: sv_setsv() should not be called with a source string that needs
2512 * to be reused, since it may destroy the source string if it is marked
2517 =for apidoc sv_setsv
2519 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2520 The source SV may be destroyed if it is mortal. Does not handle 'set'
2521 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2528 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2531 register U32 sflags;
2537 SV_CHECK_THINKFIRST(dstr);
2539 sstr = &PL_sv_undef;
2540 stype = SvTYPE(sstr);
2541 dtype = SvTYPE(dstr);
2545 /* There's a lot of redundancy below but we're going for speed here */
2550 if (dtype != SVt_PVGV) {
2551 (void)SvOK_off(dstr);
2559 sv_upgrade(dstr, SVt_IV);
2562 sv_upgrade(dstr, SVt_PVNV);
2566 sv_upgrade(dstr, SVt_PVIV);
2569 (void)SvIOK_only(dstr);
2570 SvIVX(dstr) = SvIVX(sstr);
2583 sv_upgrade(dstr, SVt_NV);
2588 sv_upgrade(dstr, SVt_PVNV);
2591 SvNVX(dstr) = SvNVX(sstr);
2592 (void)SvNOK_only(dstr);
2600 sv_upgrade(dstr, SVt_RV);
2601 else if (dtype == SVt_PVGV &&
2602 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2605 if (GvIMPORTED(dstr) != GVf_IMPORTED
2606 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2608 GvIMPORTED_on(dstr);
2619 sv_upgrade(dstr, SVt_PV);
2622 if (dtype < SVt_PVIV)
2623 sv_upgrade(dstr, SVt_PVIV);
2626 if (dtype < SVt_PVNV)
2627 sv_upgrade(dstr, SVt_PVNV);
2634 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2635 PL_op_name[PL_op->op_type]);
2637 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2641 if (dtype <= SVt_PVGV) {
2643 if (dtype != SVt_PVGV) {
2644 char *name = GvNAME(sstr);
2645 STRLEN len = GvNAMELEN(sstr);
2646 sv_upgrade(dstr, SVt_PVGV);
2647 sv_magic(dstr, dstr, '*', Nullch, 0);
2648 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2649 GvNAME(dstr) = savepvn(name, len);
2650 GvNAMELEN(dstr) = len;
2651 SvFAKE_on(dstr); /* can coerce to non-glob */
2653 /* ahem, death to those who redefine active sort subs */
2654 else if (PL_curstackinfo->si_type == PERLSI_SORT
2655 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2656 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2658 (void)SvOK_off(dstr);
2659 GvINTRO_off(dstr); /* one-shot flag */
2661 GvGP(dstr) = gp_ref(GvGP(sstr));
2663 if (GvIMPORTED(dstr) != GVf_IMPORTED
2664 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2666 GvIMPORTED_on(dstr);
2674 if (SvGMAGICAL(sstr)) {
2676 if (SvTYPE(sstr) != stype) {
2677 stype = SvTYPE(sstr);
2678 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2682 if (stype == SVt_PVLV)
2683 (void)SvUPGRADE(dstr, SVt_PVNV);
2685 (void)SvUPGRADE(dstr, stype);
2688 sflags = SvFLAGS(sstr);
2690 if (sflags & SVf_ROK) {
2691 if (dtype >= SVt_PV) {
2692 if (dtype == SVt_PVGV) {
2693 SV *sref = SvREFCNT_inc(SvRV(sstr));
2695 int intro = GvINTRO(dstr);
2700 GvINTRO_off(dstr); /* one-shot flag */
2701 Newz(602,gp, 1, GP);
2702 GvGP(dstr) = gp_ref(gp);
2703 GvSV(dstr) = NEWSV(72,0);
2704 GvLINE(dstr) = CopLINE(PL_curcop);
2705 GvEGV(dstr) = (GV*)dstr;
2708 switch (SvTYPE(sref)) {
2711 SAVESPTR(GvAV(dstr));
2713 dref = (SV*)GvAV(dstr);
2714 GvAV(dstr) = (AV*)sref;
2715 if (!GvIMPORTED_AV(dstr)
2716 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2718 GvIMPORTED_AV_on(dstr);
2723 SAVESPTR(GvHV(dstr));
2725 dref = (SV*)GvHV(dstr);
2726 GvHV(dstr) = (HV*)sref;
2727 if (!GvIMPORTED_HV(dstr)
2728 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2730 GvIMPORTED_HV_on(dstr);
2735 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2736 SvREFCNT_dec(GvCV(dstr));
2737 GvCV(dstr) = Nullcv;
2738 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2739 PL_sub_generation++;
2741 SAVESPTR(GvCV(dstr));
2744 dref = (SV*)GvCV(dstr);
2745 if (GvCV(dstr) != (CV*)sref) {
2746 CV* cv = GvCV(dstr);
2748 if (!GvCVGEN((GV*)dstr) &&
2749 (CvROOT(cv) || CvXSUB(cv)))
2752 /* ahem, death to those who redefine
2753 * active sort subs */
2754 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2755 PL_sortcop == CvSTART(cv))
2757 "Can't redefine active sort subroutine %s",
2758 GvENAME((GV*)dstr));
2759 /* Redefining a sub - warning is mandatory if
2760 it was a const and its value changed. */
2761 if (ckWARN(WARN_REDEFINE)
2763 && (!CvCONST((CV*)sref)
2764 || sv_cmp(cv_const_sv(cv),
2765 cv_const_sv((CV*)sref)))))
2767 Perl_warner(aTHX_ WARN_REDEFINE,
2769 ? "Constant subroutine %s redefined"
2770 : "Subroutine %s redefined",
2771 GvENAME((GV*)dstr));
2774 cv_ckproto(cv, (GV*)dstr,
2775 SvPOK(sref) ? SvPVX(sref) : Nullch);
2777 GvCV(dstr) = (CV*)sref;
2778 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2779 GvASSUMECV_on(dstr);
2780 PL_sub_generation++;
2782 if (!GvIMPORTED_CV(dstr)
2783 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2785 GvIMPORTED_CV_on(dstr);
2790 SAVESPTR(GvIOp(dstr));
2792 dref = (SV*)GvIOp(dstr);
2793 GvIOp(dstr) = (IO*)sref;
2797 SAVESPTR(GvFORM(dstr));
2799 dref = (SV*)GvFORM(dstr);
2800 GvFORM(dstr) = (CV*)sref;
2804 SAVESPTR(GvSV(dstr));
2806 dref = (SV*)GvSV(dstr);
2808 if (!GvIMPORTED_SV(dstr)
2809 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2811 GvIMPORTED_SV_on(dstr);
2823 (void)SvOOK_off(dstr); /* backoff */
2825 Safefree(SvPVX(dstr));
2826 SvLEN(dstr)=SvCUR(dstr)=0;
2829 (void)SvOK_off(dstr);
2830 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2832 if (sflags & SVp_NOK) {
2834 SvNVX(dstr) = SvNVX(sstr);
2836 if (sflags & SVp_IOK) {
2837 (void)SvIOK_on(dstr);
2838 SvIVX(dstr) = SvIVX(sstr);
2839 if (sflags & SVf_IVisUV)
2842 if (SvAMAGIC(sstr)) {
2846 else if (sflags & SVp_POK) {
2849 * Check to see if we can just swipe the string. If so, it's a
2850 * possible small lose on short strings, but a big win on long ones.
2851 * It might even be a win on short strings if SvPVX(dstr)
2852 * has to be allocated and SvPVX(sstr) has to be freed.
2855 if (SvTEMP(sstr) && /* slated for free anyway? */
2856 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2857 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2858 SvLEN(sstr)) /* and really is a string */
2860 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2862 SvFLAGS(dstr) &= ~SVf_OOK;
2863 Safefree(SvPVX(dstr) - SvIVX(dstr));
2865 else if (SvLEN(dstr))
2866 Safefree(SvPVX(dstr));
2868 (void)SvPOK_only(dstr);
2869 SvPV_set(dstr, SvPVX(sstr));
2870 SvLEN_set(dstr, SvLEN(sstr));
2871 SvCUR_set(dstr, SvCUR(sstr));
2874 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2875 SvPV_set(sstr, Nullch);
2880 else { /* have to copy actual string */
2881 STRLEN len = SvCUR(sstr);
2883 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2884 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2885 SvCUR_set(dstr, len);
2886 *SvEND(dstr) = '\0';
2887 (void)SvPOK_only(dstr);
2889 if ((sflags & SVf_UTF8) && !IN_BYTE)
2892 if (sflags & SVp_NOK) {
2894 SvNVX(dstr) = SvNVX(sstr);
2896 if (sflags & SVp_IOK) {
2897 (void)SvIOK_on(dstr);
2898 SvIVX(dstr) = SvIVX(sstr);
2899 if (sflags & SVf_IVisUV)
2903 else if (sflags & SVp_NOK) {
2904 SvNVX(dstr) = SvNVX(sstr);
2905 (void)SvNOK_only(dstr);
2906 if (sflags & SVf_IOK) {
2907 (void)SvIOK_on(dstr);
2908 SvIVX(dstr) = SvIVX(sstr);
2909 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2910 if (sflags & SVf_IVisUV)
2914 else if (sflags & SVp_IOK) {
2915 (void)SvIOK_only(dstr);
2916 SvIVX(dstr) = SvIVX(sstr);
2917 if (sflags & SVf_IVisUV)
2921 if (dtype == SVt_PVGV) {
2922 if (ckWARN(WARN_MISC))
2923 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2926 (void)SvOK_off(dstr);
2932 =for apidoc sv_setsv_mg
2934 Like C<sv_setsv>, but also handles 'set' magic.
2940 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2942 sv_setsv(dstr,sstr);
2947 =for apidoc sv_setpvn
2949 Copies a string into an SV. The C<len> parameter indicates the number of
2950 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2956 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2958 register char *dptr;
2959 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2960 elicit a warning, but it won't hurt. */
2961 SV_CHECK_THINKFIRST(sv);
2966 (void)SvUPGRADE(sv, SVt_PV);
2968 SvGROW(sv, len + 1);
2970 Move(ptr,dptr,len,char);
2973 (void)SvPOK_only(sv); /* validate pointer */
2978 =for apidoc sv_setpvn_mg
2980 Like C<sv_setpvn>, but also handles 'set' magic.
2986 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2988 sv_setpvn(sv,ptr,len);
2993 =for apidoc sv_setpv
2995 Copies a string into an SV. The string must be null-terminated. Does not
2996 handle 'set' magic. See C<sv_setpv_mg>.
3002 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3004 register STRLEN len;
3006 SV_CHECK_THINKFIRST(sv);
3012 (void)SvUPGRADE(sv, SVt_PV);
3014 SvGROW(sv, len + 1);
3015 Move(ptr,SvPVX(sv),len+1,char);
3017 (void)SvPOK_only(sv); /* validate pointer */
3022 =for apidoc sv_setpv_mg
3024 Like C<sv_setpv>, but also handles 'set' magic.
3030 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3037 =for apidoc sv_usepvn
3039 Tells an SV to use C<ptr> to find its string value. Normally the string is
3040 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3041 The C<ptr> should point to memory that was allocated by C<malloc>. The
3042 string length, C<len>, must be supplied. This function will realloc the
3043 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3044 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3045 See C<sv_usepvn_mg>.
3051 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3053 SV_CHECK_THINKFIRST(sv);
3054 (void)SvUPGRADE(sv, SVt_PV);
3059 (void)SvOOK_off(sv);
3060 if (SvPVX(sv) && SvLEN(sv))
3061 Safefree(SvPVX(sv));
3062 Renew(ptr, len+1, char);
3065 SvLEN_set(sv, len+1);
3067 (void)SvPOK_only(sv); /* validate pointer */
3072 =for apidoc sv_usepvn_mg
3074 Like C<sv_usepvn>, but also handles 'set' magic.
3080 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3082 sv_usepvn(sv,ptr,len);
3087 Perl_sv_force_normal(pTHX_ register SV *sv)
3089 if (SvREADONLY(sv)) {
3092 char *pvx = SvPVX(sv);
3093 STRLEN len = SvCUR(sv);
3094 U32 hash = SvUVX(sv);
3095 SvGROW(sv, len + 1);
3096 Move(pvx,SvPVX(sv),len,char);
3100 unsharepvn(pvx,len,hash);
3102 else if (PL_curcop != &PL_compiling)
3103 Perl_croak(aTHX_ PL_no_modify);
3107 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3114 Efficient removal of characters from the beginning of the string buffer.
3115 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3116 the string buffer. The C<ptr> becomes the first character of the adjusted
3123 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3127 register STRLEN delta;
3129 if (!ptr || !SvPOKp(sv))
3131 SV_CHECK_THINKFIRST(sv);
3132 if (SvTYPE(sv) < SVt_PVIV)
3133 sv_upgrade(sv,SVt_PVIV);
3136 if (!SvLEN(sv)) { /* make copy of shared string */
3137 char *pvx = SvPVX(sv);
3138 STRLEN len = SvCUR(sv);
3139 SvGROW(sv, len + 1);
3140 Move(pvx,SvPVX(sv),len,char);
3144 SvFLAGS(sv) |= SVf_OOK;
3146 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3147 delta = ptr - SvPVX(sv);
3155 =for apidoc sv_catpvn
3157 Concatenates the string onto the end of the string which is in the SV. The
3158 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3159 'set' magic. See C<sv_catpvn_mg>.
3165 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3170 junk = SvPV_force(sv, tlen);
3171 SvGROW(sv, tlen + len + 1);
3174 Move(ptr,SvPVX(sv)+tlen,len,char);
3177 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3182 =for apidoc sv_catpvn_mg
3184 Like C<sv_catpvn>, but also handles 'set' magic.
3190 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3192 sv_catpvn(sv,ptr,len);
3197 =for apidoc sv_catsv
3199 Concatenates the string from SV C<ssv> onto the end of the string in SV
3200 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3206 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3212 if ((s = SvPV(sstr, len))) {
3213 if (DO_UTF8(sstr)) {
3214 sv_utf8_upgrade(dstr);
3215 sv_catpvn(dstr,s,len);
3219 sv_catpvn(dstr,s,len);
3224 =for apidoc sv_catsv_mg
3226 Like C<sv_catsv>, but also handles 'set' magic.
3232 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3234 sv_catsv(dstr,sstr);
3239 =for apidoc sv_catpv
3241 Concatenates the string onto the end of the string which is in the SV.
3242 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3248 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3250 register STRLEN len;
3256 junk = SvPV_force(sv, tlen);
3258 SvGROW(sv, tlen + len + 1);
3261 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3263 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3268 =for apidoc sv_catpv_mg
3270 Like C<sv_catpv>, but also handles 'set' magic.
3276 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3283 Perl_newSV(pTHX_ STRLEN len)
3289 sv_upgrade(sv, SVt_PV);
3290 SvGROW(sv, len + 1);
3295 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3298 =for apidoc sv_magic
3300 Adds magic to an SV.
3306 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3310 if (SvREADONLY(sv)) {
3312 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3313 Perl_croak(aTHX_ PL_no_modify);
3315 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3316 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3323 (void)SvUPGRADE(sv, SVt_PVMG);
3325 Newz(702,mg, 1, MAGIC);
3326 mg->mg_moremagic = SvMAGIC(sv);
3329 if (!obj || obj == sv || how == '#' || how == 'r')
3333 mg->mg_obj = SvREFCNT_inc(obj);
3334 mg->mg_flags |= MGf_REFCOUNTED;
3337 mg->mg_len = namlen;
3340 mg->mg_ptr = savepvn(name, namlen);
3341 else if (namlen == HEf_SVKEY)
3342 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3346 mg->mg_virtual = &PL_vtbl_sv;
3349 mg->mg_virtual = &PL_vtbl_amagic;
3352 mg->mg_virtual = &PL_vtbl_amagicelem;
3358 mg->mg_virtual = &PL_vtbl_bm;
3361 mg->mg_virtual = &PL_vtbl_regdata;
3364 mg->mg_virtual = &PL_vtbl_regdatum;
3367 mg->mg_virtual = &PL_vtbl_env;
3370 mg->mg_virtual = &PL_vtbl_fm;
3373 mg->mg_virtual = &PL_vtbl_envelem;
3376 mg->mg_virtual = &PL_vtbl_mglob;
3379 mg->mg_virtual = &PL_vtbl_isa;
3382 mg->mg_virtual = &PL_vtbl_isaelem;
3385 mg->mg_virtual = &PL_vtbl_nkeys;
3392 mg->mg_virtual = &PL_vtbl_dbline;
3396 mg->mg_virtual = &PL_vtbl_mutex;
3398 #endif /* USE_THREADS */
3399 #ifdef USE_LOCALE_COLLATE
3401 mg->mg_virtual = &PL_vtbl_collxfrm;
3403 #endif /* USE_LOCALE_COLLATE */
3405 mg->mg_virtual = &PL_vtbl_pack;
3409 mg->mg_virtual = &PL_vtbl_packelem;
3412 mg->mg_virtual = &PL_vtbl_regexp;
3415 mg->mg_virtual = &PL_vtbl_sig;
3418 mg->mg_virtual = &PL_vtbl_sigelem;
3421 mg->mg_virtual = &PL_vtbl_taint;
3425 mg->mg_virtual = &PL_vtbl_uvar;
3428 mg->mg_virtual = &PL_vtbl_vec;
3431 mg->mg_virtual = &PL_vtbl_substr;
3434 mg->mg_virtual = &PL_vtbl_defelem;
3437 mg->mg_virtual = &PL_vtbl_glob;
3440 mg->mg_virtual = &PL_vtbl_arylen;
3443 mg->mg_virtual = &PL_vtbl_pos;
3446 mg->mg_virtual = &PL_vtbl_backref;
3448 case '~': /* Reserved for use by extensions not perl internals. */
3449 /* Useful for attaching extension internal data to perl vars. */
3450 /* Note that multiple extensions may clash if magical scalars */
3451 /* etc holding private data from one are passed to another. */
3455 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3459 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3463 =for apidoc sv_unmagic
3465 Removes magic from an SV.
3471 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3475 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3478 for (mg = *mgp; mg; mg = *mgp) {
3479 if (mg->mg_type == type) {
3480 MGVTBL* vtbl = mg->mg_virtual;
3481 *mgp = mg->mg_moremagic;
3482 if (vtbl && vtbl->svt_free)
3483 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3484 if (mg->mg_ptr && mg->mg_type != 'g')
3485 if (mg->mg_len >= 0)
3486 Safefree(mg->mg_ptr);
3487 else if (mg->mg_len == HEf_SVKEY)
3488 SvREFCNT_dec((SV*)mg->mg_ptr);
3489 if (mg->mg_flags & MGf_REFCOUNTED)
3490 SvREFCNT_dec(mg->mg_obj);
3494 mgp = &mg->mg_moremagic;
3498 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3505 =for apidoc sv_rvweaken
3513 Perl_sv_rvweaken(pTHX_ SV *sv)
3516 if (!SvOK(sv)) /* let undefs pass */
3519 Perl_croak(aTHX_ "Can't weaken a nonreference");
3520 else if (SvWEAKREF(sv)) {
3522 if (ckWARN(WARN_MISC))
3523 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3527 sv_add_backref(tsv, sv);
3534 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3538 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3539 av = (AV*)mg->mg_obj;
3542 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3543 SvREFCNT_dec(av); /* for sv_magic */
3549 S_sv_del_backref(pTHX_ SV *sv)
3556 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3557 Perl_croak(aTHX_ "panic: del_backref");
3558 av = (AV *)mg->mg_obj;
3563 svp[i] = &PL_sv_undef; /* XXX */
3570 =for apidoc sv_insert
3572 Inserts a string at the specified offset/length within the SV. Similar to
3573 the Perl substr() function.
3579 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3583 register char *midend;
3584 register char *bigend;
3590 Perl_croak(aTHX_ "Can't modify non-existent substring");
3591 SvPV_force(bigstr, curlen);
3592 (void)SvPOK_only_UTF8(bigstr);
3593 if (offset + len > curlen) {
3594 SvGROW(bigstr, offset+len+1);
3595 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3596 SvCUR_set(bigstr, offset+len);
3600 i = littlelen - len;
3601 if (i > 0) { /* string might grow */
3602 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3603 mid = big + offset + len;
3604 midend = bigend = big + SvCUR(bigstr);
3607 while (midend > mid) /* shove everything down */
3608 *--bigend = *--midend;
3609 Move(little,big+offset,littlelen,char);
3615 Move(little,SvPVX(bigstr)+offset,len,char);
3620 big = SvPVX(bigstr);
3623 bigend = big + SvCUR(bigstr);
3625 if (midend > bigend)
3626 Perl_croak(aTHX_ "panic: sv_insert");
3628 if (mid - big > bigend - midend) { /* faster to shorten from end */
3630 Move(little, mid, littlelen,char);
3633 i = bigend - midend;
3635 Move(midend, mid, i,char);
3639 SvCUR_set(bigstr, mid - big);
3642 else if ((i = mid - big)) { /* faster from front */
3643 midend -= littlelen;
3645 sv_chop(bigstr,midend-i);
3650 Move(little, mid, littlelen,char);
3652 else if (littlelen) {
3653 midend -= littlelen;
3654 sv_chop(bigstr,midend);
3655 Move(little,midend,littlelen,char);
3658 sv_chop(bigstr,midend);
3664 =for apidoc sv_replace
3666 Make the first argument a copy of the second, then delete the original.
3672 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3675 U32 refcnt = SvREFCNT(sv);
3676 SV_CHECK_THINKFIRST(sv);
3677 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3678 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3679 if (SvMAGICAL(sv)) {
3683 sv_upgrade(nsv, SVt_PVMG);
3684 SvMAGIC(nsv) = SvMAGIC(sv);
3685 SvFLAGS(nsv) |= SvMAGICAL(sv);
3691 assert(!SvREFCNT(sv));
3692 StructCopy(nsv,sv,SV);
3693 SvREFCNT(sv) = refcnt;
3694 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3699 =for apidoc sv_clear
3701 Clear an SV, making it empty. Does not free the memory used by the SV
3708 Perl_sv_clear(pTHX_ register SV *sv)
3712 assert(SvREFCNT(sv) == 0);
3716 if (PL_defstash) { /* Still have a symbol table? */
3721 Zero(&tmpref, 1, SV);
3722 sv_upgrade(&tmpref, SVt_RV);
3724 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3725 SvREFCNT(&tmpref) = 1;
3728 stash = SvSTASH(sv);
3729 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3732 PUSHSTACKi(PERLSI_DESTROY);
3733 SvRV(&tmpref) = SvREFCNT_inc(sv);
3738 call_sv((SV*)GvCV(destructor),
3739 G_DISCARD|G_EVAL|G_KEEPERR);
3745 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3747 del_XRV(SvANY(&tmpref));
3750 if (PL_in_clean_objs)
3751 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3753 /* DESTROY gave object new lease on life */
3759 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3760 SvOBJECT_off(sv); /* Curse the object. */
3761 if (SvTYPE(sv) != SVt_PVIO)
3762 --PL_sv_objcount; /* XXX Might want something more general */
3765 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3768 switch (SvTYPE(sv)) {
3771 IoIFP(sv) != PerlIO_stdin() &&
3772 IoIFP(sv) != PerlIO_stdout() &&
3773 IoIFP(sv) != PerlIO_stderr())
3775 io_close((IO*)sv, FALSE);
3777 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3778 PerlDir_close(IoDIRP(sv));
3779 IoDIRP(sv) = (DIR*)NULL;
3780 Safefree(IoTOP_NAME(sv));
3781 Safefree(IoFMT_NAME(sv));
3782 Safefree(IoBOTTOM_NAME(sv));
3797 SvREFCNT_dec(LvTARG(sv));
3801 Safefree(GvNAME(sv));
3802 /* cannot decrease stash refcount yet, as we might recursively delete
3803 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3804 of stash until current sv is completely gone.
3805 -- JohnPC, 27 Mar 1998 */
3806 stash = GvSTASH(sv);
3812 (void)SvOOK_off(sv);
3820 SvREFCNT_dec(SvRV(sv));
3822 else if (SvPVX(sv) && SvLEN(sv))
3823 Safefree(SvPVX(sv));
3824 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3825 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3837 switch (SvTYPE(sv)) {
3853 del_XPVIV(SvANY(sv));
3856 del_XPVNV(SvANY(sv));
3859 del_XPVMG(SvANY(sv));
3862 del_XPVLV(SvANY(sv));
3865 del_XPVAV(SvANY(sv));
3868 del_XPVHV(SvANY(sv));
3871 del_XPVCV(SvANY(sv));
3874 del_XPVGV(SvANY(sv));
3875 /* code duplication for increased performance. */
3876 SvFLAGS(sv) &= SVf_BREAK;
3877 SvFLAGS(sv) |= SVTYPEMASK;
3878 /* decrease refcount of the stash that owns this GV, if any */
3880 SvREFCNT_dec(stash);
3881 return; /* not break, SvFLAGS reset already happened */
3883 del_XPVBM(SvANY(sv));
3886 del_XPVFM(SvANY(sv));
3889 del_XPVIO(SvANY(sv));
3892 SvFLAGS(sv) &= SVf_BREAK;
3893 SvFLAGS(sv) |= SVTYPEMASK;
3897 Perl_sv_newref(pTHX_ SV *sv)
3900 ATOMIC_INC(SvREFCNT(sv));
3907 Free the memory used by an SV.
3913 Perl_sv_free(pTHX_ SV *sv)
3916 int refcount_is_zero;
3920 if (SvREFCNT(sv) == 0) {
3921 if (SvFLAGS(sv) & SVf_BREAK)
3923 if (PL_in_clean_all) /* All is fair */
3925 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3926 /* make sure SvREFCNT(sv)==0 happens very seldom */
3927 SvREFCNT(sv) = (~(U32)0)/2;
3930 if (ckWARN_d(WARN_INTERNAL))
3931 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3934 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3935 if (!refcount_is_zero)
3939 if (ckWARN_d(WARN_DEBUGGING))
3940 Perl_warner(aTHX_ WARN_DEBUGGING,
3941 "Attempt to free temp prematurely: SV 0x%"UVxf,
3946 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3947 /* make sure SvREFCNT(sv)==0 happens very seldom */
3948 SvREFCNT(sv) = (~(U32)0)/2;
3959 Returns the length of the string in the SV. See also C<SvCUR>.
3965 Perl_sv_len(pTHX_ register SV *sv)
3974 len = mg_length(sv);
3976 junk = SvPV(sv, len);
3981 =for apidoc sv_len_utf8
3983 Returns the number of characters in the string in an SV, counting wide
3984 UTF8 bytes as a single character.
3990 Perl_sv_len_utf8(pTHX_ register SV *sv)
4001 len = mg_length(sv);
4004 s = (U8*)SvPV(sv, len);
4015 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4020 I32 uoffset = *offsetp;
4026 start = s = (U8*)SvPV(sv, len);
4028 while (s < send && uoffset--)
4032 *offsetp = s - start;
4036 while (s < send && ulen--)
4046 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4055 s = (U8*)SvPV(sv, len);
4057 Perl_croak(aTHX_ "panic: bad byte offset");
4058 send = s + *offsetp;
4066 if (ckWARN_d(WARN_UTF8))
4067 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4077 Returns a boolean indicating whether the strings in the two SVs are
4084 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4091 bool pv1tmp = FALSE;
4092 bool pv2tmp = FALSE;
4099 pv1 = SvPV(sv1, cur1);
4106 pv2 = SvPV(sv2, cur2);
4108 /* do not utf8ize the comparands as a side-effect */
4109 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4111 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4115 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4121 eq = memEQ(pv1, pv2, cur1);
4134 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4135 string in C<sv1> is less than, equal to, or greater than the string in
4142 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4147 bool pv1tmp = FALSE;
4148 bool pv2tmp = FALSE;
4155 pv1 = SvPV(sv1, cur1);
4162 pv2 = SvPV(sv2, cur2);
4164 /* do not utf8ize the comparands as a side-effect */
4165 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4167 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4171 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4177 cmp = cur2 ? -1 : 0;
4181 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4184 cmp = retval < 0 ? -1 : 1;
4185 } else if (cur1 == cur2) {
4188 cmp = cur1 < cur2 ? -1 : 1;
4201 =for apidoc sv_cmp_locale
4203 Compares the strings in two SVs in a locale-aware manner. See
4210 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4212 #ifdef USE_LOCALE_COLLATE
4218 if (PL_collation_standard)
4222 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4224 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4226 if (!pv1 || !len1) {
4237 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4240 return retval < 0 ? -1 : 1;
4243 * When the result of collation is equality, that doesn't mean
4244 * that there are no differences -- some locales exclude some
4245 * characters from consideration. So to avoid false equalities,
4246 * we use the raw string as a tiebreaker.
4252 #endif /* USE_LOCALE_COLLATE */
4254 return sv_cmp(sv1, sv2);
4257 #ifdef USE_LOCALE_COLLATE
4259 * Any scalar variable may carry an 'o' magic that contains the
4260 * scalar data of the variable transformed to such a format that
4261 * a normal memory comparison can be used to compare the data
4262 * according to the locale settings.
4265 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4269 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4270 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4275 Safefree(mg->mg_ptr);
4277 if ((xf = mem_collxfrm(s, len, &xlen))) {
4278 if (SvREADONLY(sv)) {
4281 return xf + sizeof(PL_collation_ix);
4284 sv_magic(sv, 0, 'o', 0, 0);
4285 mg = mg_find(sv, 'o');
4298 if (mg && mg->mg_ptr) {
4300 return mg->mg_ptr + sizeof(PL_collation_ix);
4308 #endif /* USE_LOCALE_COLLATE */
4313 Get a line from the filehandle and store it into the SV, optionally
4314 appending to the currently-stored string.
4320 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4325 register STDCHAR rslast;
4326 register STDCHAR *bp;
4330 SV_CHECK_THINKFIRST(sv);
4331 (void)SvUPGRADE(sv, SVt_PV);
4335 if (RsSNARF(PL_rs)) {
4339 else if (RsRECORD(PL_rs)) {
4340 I32 recsize, bytesread;
4343 /* Grab the size of the record we're getting */
4344 recsize = SvIV(SvRV(PL_rs));
4345 (void)SvPOK_only(sv); /* Validate pointer */
4346 buffer = SvGROW(sv, recsize + 1);
4349 /* VMS wants read instead of fread, because fread doesn't respect */
4350 /* RMS record boundaries. This is not necessarily a good thing to be */
4351 /* doing, but we've got no other real choice */
4352 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4354 bytesread = PerlIO_read(fp, buffer, recsize);
4356 SvCUR_set(sv, bytesread);
4357 buffer[bytesread] = '\0';
4358 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4360 else if (RsPARA(PL_rs)) {
4365 rsptr = SvPV(PL_rs, rslen);
4366 rslast = rslen ? rsptr[rslen - 1] : '\0';
4368 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4369 do { /* to make sure file boundaries work right */
4372 i = PerlIO_getc(fp);
4376 PerlIO_ungetc(fp,i);
4382 /* See if we know enough about I/O mechanism to cheat it ! */
4384 /* This used to be #ifdef test - it is made run-time test for ease
4385 of abstracting out stdio interface. One call should be cheap
4386 enough here - and may even be a macro allowing compile
4390 if (PerlIO_fast_gets(fp)) {
4393 * We're going to steal some values from the stdio struct
4394 * and put EVERYTHING in the innermost loop into registers.
4396 register STDCHAR *ptr;
4400 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4401 /* An ungetc()d char is handled separately from the regular
4402 * buffer, so we getc() it back out and stuff it in the buffer.
4404 i = PerlIO_getc(fp);
4405 if (i == EOF) return 0;
4406 *(--((*fp)->_ptr)) = (unsigned char) i;
4410 /* Here is some breathtakingly efficient cheating */
4412 cnt = PerlIO_get_cnt(fp); /* get count into register */
4413 (void)SvPOK_only(sv); /* validate pointer */
4414 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4415 if (cnt > 80 && SvLEN(sv) > append) {
4416 shortbuffered = cnt - SvLEN(sv) + append + 1;
4417 cnt -= shortbuffered;
4421 /* remember that cnt can be negative */
4422 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4427 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4428 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4429 DEBUG_P(PerlIO_printf(Perl_debug_log,
4430 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4431 DEBUG_P(PerlIO_printf(Perl_debug_log,
4432 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4433 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4434 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4439 while (cnt > 0) { /* this | eat */
4441 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4442 goto thats_all_folks; /* screams | sed :-) */
4446 Copy(ptr, bp, cnt, char); /* this | eat */
4447 bp += cnt; /* screams | dust */
4448 ptr += cnt; /* louder | sed :-) */
4453 if (shortbuffered) { /* oh well, must extend */
4454 cnt = shortbuffered;
4456 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4458 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4459 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4463 DEBUG_P(PerlIO_printf(Perl_debug_log,
4464 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4465 PTR2UV(ptr),(long)cnt));
4466 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4467 DEBUG_P(PerlIO_printf(Perl_debug_log,
4468 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4469 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4470 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4471 /* This used to call 'filbuf' in stdio form, but as that behaves like
4472 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4473 another abstraction. */
4474 i = PerlIO_getc(fp); /* get more characters */
4475 DEBUG_P(PerlIO_printf(Perl_debug_log,
4476 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4477 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4478 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4479 cnt = PerlIO_get_cnt(fp);
4480 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4481 DEBUG_P(PerlIO_printf(Perl_debug_log,
4482 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4484 if (i == EOF) /* all done for ever? */
4485 goto thats_really_all_folks;
4487 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4489 SvGROW(sv, bpx + cnt + 2);
4490 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4492 *bp++ = i; /* store character from PerlIO_getc */
4494 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4495 goto thats_all_folks;
4499 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4500 memNE((char*)bp - rslen, rsptr, rslen))
4501 goto screamer; /* go back to the fray */
4502 thats_really_all_folks:
4504 cnt += shortbuffered;
4505 DEBUG_P(PerlIO_printf(Perl_debug_log,
4506 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4507 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4508 DEBUG_P(PerlIO_printf(Perl_debug_log,
4509 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4510 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4511 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4513 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4514 DEBUG_P(PerlIO_printf(Perl_debug_log,
4515 "Screamer: done, len=%ld, string=|%.*s|\n",
4516 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4521 /*The big, slow, and stupid way */
4524 /* Need to work around EPOC SDK features */
4525 /* On WINS: MS VC5 generates calls to _chkstk, */
4526 /* if a `large' stack frame is allocated */
4527 /* gcc on MARM does not generate calls like these */
4533 register STDCHAR *bpe = buf + sizeof(buf);
4535 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4536 ; /* keep reading */
4540 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4541 /* Accomodate broken VAXC compiler, which applies U8 cast to
4542 * both args of ?: operator, causing EOF to change into 255
4544 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4548 sv_catpvn(sv, (char *) buf, cnt);
4550 sv_setpvn(sv, (char *) buf, cnt);
4552 if (i != EOF && /* joy */
4554 SvCUR(sv) < rslen ||
4555 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4559 * If we're reading from a TTY and we get a short read,
4560 * indicating that the user hit his EOF character, we need
4561 * to notice it now, because if we try to read from the TTY
4562 * again, the EOF condition will disappear.
4564 * The comparison of cnt to sizeof(buf) is an optimization
4565 * that prevents unnecessary calls to feof().
4569 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4574 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4575 while (i != EOF) { /* to make sure file boundaries work right */
4576 i = PerlIO_getc(fp);
4578 PerlIO_ungetc(fp,i);
4584 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4591 Auto-increment of the value in the SV.
4597 Perl_sv_inc(pTHX_ register SV *sv)
4606 if (SvTHINKFIRST(sv)) {
4607 if (SvREADONLY(sv)) {
4609 if (PL_curcop != &PL_compiling)
4610 Perl_croak(aTHX_ PL_no_modify);
4614 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4616 i = PTR2IV(SvRV(sv));
4621 flags = SvFLAGS(sv);
4622 if (flags & SVp_NOK) {
4623 (void)SvNOK_only(sv);
4627 if (flags & SVp_IOK) {
4629 if (SvUVX(sv) == UV_MAX)
4630 sv_setnv(sv, (NV)UV_MAX + 1.0);
4632 (void)SvIOK_only_UV(sv);
4635 if (SvIVX(sv) == IV_MAX)
4636 sv_setnv(sv, (NV)IV_MAX + 1.0);
4638 (void)SvIOK_only(sv);
4644 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4645 if ((flags & SVTYPEMASK) < SVt_PVNV)
4646 sv_upgrade(sv, SVt_NV);
4648 (void)SvNOK_only(sv);
4652 while (isALPHA(*d)) d++;
4653 while (isDIGIT(*d)) d++;
4655 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4659 while (d >= SvPVX(sv)) {
4667 /* MKS: The original code here died if letters weren't consecutive.
4668 * at least it didn't have to worry about non-C locales. The
4669 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4670 * arranged in order (although not consecutively) and that only
4671 * [A-Za-z] are accepted by isALPHA in the C locale.
4673 if (*d != 'z' && *d != 'Z') {
4674 do { ++*d; } while (!isALPHA(*d));
4677 *(d--) -= 'z' - 'a';
4682 *(d--) -= 'z' - 'a' + 1;
4686 /* oh,oh, the number grew */
4687 SvGROW(sv, SvCUR(sv) + 2);
4689 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4700 Auto-decrement of the value in the SV.
4706 Perl_sv_dec(pTHX_ register SV *sv)
4714 if (SvTHINKFIRST(sv)) {
4715 if (SvREADONLY(sv)) {
4717 if (PL_curcop != &PL_compiling)
4718 Perl_croak(aTHX_ PL_no_modify);
4722 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4724 i = PTR2IV(SvRV(sv));
4729 flags = SvFLAGS(sv);
4730 if (flags & SVp_NOK) {
4732 (void)SvNOK_only(sv);
4735 if (flags & SVp_IOK) {
4737 if (SvUVX(sv) == 0) {
4738 (void)SvIOK_only(sv);
4742 (void)SvIOK_only_UV(sv);
4746 if (SvIVX(sv) == IV_MIN)
4747 sv_setnv(sv, (NV)IV_MIN - 1.0);
4749 (void)SvIOK_only(sv);
4755 if (!(flags & SVp_POK)) {
4756 if ((flags & SVTYPEMASK) < SVt_PVNV)
4757 sv_upgrade(sv, SVt_NV);
4759 (void)SvNOK_only(sv);
4762 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4766 =for apidoc sv_mortalcopy
4768 Creates a new SV which is a copy of the original SV. The new SV is marked
4774 /* Make a string that will exist for the duration of the expression
4775 * evaluation. Actually, it may have to last longer than that, but
4776 * hopefully we won't free it until it has been assigned to a
4777 * permanent location. */
4780 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4786 sv_setsv(sv,oldstr);
4788 PL_tmps_stack[++PL_tmps_ix] = sv;
4794 =for apidoc sv_newmortal
4796 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4802 Perl_sv_newmortal(pTHX)
4808 SvFLAGS(sv) = SVs_TEMP;
4810 PL_tmps_stack[++PL_tmps_ix] = sv;
4815 =for apidoc sv_2mortal
4817 Marks an SV as mortal. The SV will be destroyed when the current context
4823 /* same thing without the copying */
4826 Perl_sv_2mortal(pTHX_ register SV *sv)
4831 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4834 PL_tmps_stack[++PL_tmps_ix] = sv;
4842 Creates a new SV and copies a string into it. The reference count for the
4843 SV is set to 1. If C<len> is zero, Perl will compute the length using
4844 strlen(). For efficiency, consider using C<newSVpvn> instead.
4850 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4857 sv_setpvn(sv,s,len);
4862 =for apidoc newSVpvn
4864 Creates a new SV and copies a string into it. The reference count for the
4865 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4866 string. You are responsible for ensuring that the source string is at least
4873 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4878 sv_setpvn(sv,s,len);
4883 =for apidoc newSVpvn_share
4885 Creates a new SV and populates it with a string from
4886 the string table. Turns on READONLY and FAKE.
4887 The idea here is that as string table is used for shared hash
4888 keys these strings will have SvPVX == HeKEY and hash lookup
4889 will avoid string compare.
4895 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4899 PERL_HASH(hash, src, len);
4901 sv_upgrade(sv, SVt_PVIV);
4902 SvPVX(sv) = sharepvn(src, len, hash);
4912 #if defined(PERL_IMPLICIT_CONTEXT)
4914 Perl_newSVpvf_nocontext(const char* pat, ...)
4919 va_start(args, pat);
4920 sv = vnewSVpvf(pat, &args);
4927 =for apidoc newSVpvf
4929 Creates a new SV an initialize it with the string formatted like
4936 Perl_newSVpvf(pTHX_ const char* pat, ...)
4940 va_start(args, pat);
4941 sv = vnewSVpvf(pat, &args);
4947 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4951 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4958 Creates a new SV and copies a floating point value into it.
4959 The reference count for the SV is set to 1.
4965 Perl_newSVnv(pTHX_ NV n)
4977 Creates a new SV and copies an integer into it. The reference count for the
4984 Perl_newSViv(pTHX_ IV i)
4996 Creates a new SV and copies an unsigned integer into it.
4997 The reference count for the SV is set to 1.
5003 Perl_newSVuv(pTHX_ UV u)
5013 =for apidoc newRV_noinc
5015 Creates an RV wrapper for an SV. The reference count for the original
5016 SV is B<not> incremented.
5022 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5028 sv_upgrade(sv, SVt_RV);
5035 /* newRV_inc is #defined to newRV in sv.h */
5037 Perl_newRV(pTHX_ SV *tmpRef)
5039 return newRV_noinc(SvREFCNT_inc(tmpRef));
5045 Creates a new SV which is an exact duplicate of the original SV.
5050 /* make an exact duplicate of old */
5053 Perl_newSVsv(pTHX_ register SV *old)
5060 if (SvTYPE(old) == SVTYPEMASK) {
5061 if (ckWARN_d(WARN_INTERNAL))
5062 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5077 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5085 char todo[PERL_UCHAR_MAX+1];
5090 if (!*s) { /* reset ?? searches */
5091 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5092 pm->op_pmdynflags &= ~PMdf_USED;
5097 /* reset variables */
5099 if (!HvARRAY(stash))
5102 Zero(todo, 256, char);
5104 i = (unsigned char)*s;
5108 max = (unsigned char)*s++;
5109 for ( ; i <= max; i++) {
5112 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5113 for (entry = HvARRAY(stash)[i];
5115 entry = HeNEXT(entry))
5117 if (!todo[(U8)*HeKEY(entry)])
5119 gv = (GV*)HeVAL(entry);
5121 if (SvTHINKFIRST(sv)) {
5122 if (!SvREADONLY(sv) && SvROK(sv))
5127 if (SvTYPE(sv) >= SVt_PV) {
5129 if (SvPVX(sv) != Nullch)
5136 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5138 #if !defined( VMS) && !defined(EPOC) /* VMS has no environ array */
5140 environ[0] = Nullch;
5149 Perl_sv_2io(pTHX_ SV *sv)
5155 switch (SvTYPE(sv)) {
5163 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5167 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5169 return sv_2io(SvRV(sv));
5170 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5176 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5183 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5190 return *gvp = Nullgv, Nullcv;
5191 switch (SvTYPE(sv)) {
5211 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5212 tryAMAGICunDEREF(to_cv);
5215 if (SvTYPE(sv) == SVt_PVCV) {
5224 Perl_croak(aTHX_ "Not a subroutine reference");
5229 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5235 if (lref && !GvCVu(gv)) {
5238 tmpsv = NEWSV(704,0);
5239 gv_efullname3(tmpsv, gv, Nullch);
5240 /* XXX this is probably not what they think they're getting.
5241 * It has the same effect as "sub name;", i.e. just a forward
5243 newSUB(start_subparse(FALSE, 0),
5244 newSVOP(OP_CONST, 0, tmpsv),
5249 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5258 Returns true if the SV has a true value by Perl's rules.
5264 Perl_sv_true(pTHX_ register SV *sv)
5271 if ((tXpv = (XPV*)SvANY(sv)) &&
5272 (tXpv->xpv_cur > 1 ||
5273 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5280 return SvIVX(sv) != 0;
5283 return SvNVX(sv) != 0.0;
5285 return sv_2bool(sv);
5291 Perl_sv_iv(pTHX_ register SV *sv)
5295 return (IV)SvUVX(sv);
5302 Perl_sv_uv(pTHX_ register SV *sv)
5307 return (UV)SvIVX(sv);
5313 Perl_sv_nv(pTHX_ register SV *sv)
5321 Perl_sv_pv(pTHX_ SV *sv)
5328 return sv_2pv(sv, &n_a);
5332 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5338 return sv_2pv(sv, lp);
5342 =for apidoc sv_pvn_force
5344 Get a sensible string out of the SV somehow.
5350 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5354 if (SvTHINKFIRST(sv) && !SvROK(sv))
5355 sv_force_normal(sv);
5361 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5363 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5364 PL_op_name[PL_op->op_type]);
5368 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5373 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5374 SvGROW(sv, len + 1);
5375 Move(s,SvPVX(sv),len,char);
5380 SvPOK_on(sv); /* validate pointer */
5382 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5383 PTR2UV(sv),SvPVX(sv)));
5390 Perl_sv_pvbyte(pTHX_ SV *sv)
5396 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5398 return sv_pvn(sv,lp);
5402 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5404 return sv_pvn_force(sv,lp);
5408 Perl_sv_pvutf8(pTHX_ SV *sv)
5410 sv_utf8_upgrade(sv);
5415 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5417 sv_utf8_upgrade(sv);
5418 return sv_pvn(sv,lp);
5422 =for apidoc sv_pvutf8n_force
5424 Get a sensible UTF8-encoded string out of the SV somehow. See
5431 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5433 sv_utf8_upgrade(sv);
5434 return sv_pvn_force(sv,lp);
5438 =for apidoc sv_reftype
5440 Returns a string describing what the SV is a reference to.
5446 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5448 if (ob && SvOBJECT(sv))
5449 return HvNAME(SvSTASH(sv));
5451 switch (SvTYPE(sv)) {
5465 case SVt_PVLV: return "LVALUE";
5466 case SVt_PVAV: return "ARRAY";
5467 case SVt_PVHV: return "HASH";
5468 case SVt_PVCV: return "CODE";
5469 case SVt_PVGV: return "GLOB";
5470 case SVt_PVFM: return "FORMAT";
5471 case SVt_PVIO: return "IO";
5472 default: return "UNKNOWN";
5478 =for apidoc sv_isobject
5480 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5481 object. If the SV is not an RV, or if the object is not blessed, then this
5488 Perl_sv_isobject(pTHX_ SV *sv)
5505 Returns a boolean indicating whether the SV is blessed into the specified
5506 class. This does not check for subtypes; use C<sv_derived_from> to verify
5507 an inheritance relationship.
5513 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5525 return strEQ(HvNAME(SvSTASH(sv)), name);
5531 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5532 it will be upgraded to one. If C<classname> is non-null then the new SV will
5533 be blessed in the specified package. The new SV is returned and its
5534 reference count is 1.
5540 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5547 SV_CHECK_THINKFIRST(rv);
5550 if (SvTYPE(rv) >= SVt_PVMG) {
5551 U32 refcnt = SvREFCNT(rv);
5555 SvREFCNT(rv) = refcnt;
5558 if (SvTYPE(rv) < SVt_RV)
5559 sv_upgrade(rv, SVt_RV);
5560 else if (SvTYPE(rv) > SVt_RV) {
5561 (void)SvOOK_off(rv);
5562 if (SvPVX(rv) && SvLEN(rv))
5563 Safefree(SvPVX(rv));
5573 HV* stash = gv_stashpv(classname, TRUE);
5574 (void)sv_bless(rv, stash);
5580 =for apidoc sv_setref_pv
5582 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5583 argument will be upgraded to an RV. That RV will be modified to point to
5584 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5585 into the SV. The C<classname> argument indicates the package for the
5586 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5587 will be returned and will have a reference count of 1.
5589 Do not use with other Perl types such as HV, AV, SV, CV, because those
5590 objects will become corrupted by the pointer copy process.
5592 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5598 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5601 sv_setsv(rv, &PL_sv_undef);
5605 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5610 =for apidoc sv_setref_iv
5612 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5613 argument will be upgraded to an RV. That RV will be modified to point to
5614 the new SV. The C<classname> argument indicates the package for the
5615 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5616 will be returned and will have a reference count of 1.
5622 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5624 sv_setiv(newSVrv(rv,classname), iv);
5629 =for apidoc sv_setref_nv
5631 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5632 argument will be upgraded to an RV. That RV will be modified to point to
5633 the new SV. The C<classname> argument indicates the package for the
5634 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5635 will be returned and will have a reference count of 1.
5641 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5643 sv_setnv(newSVrv(rv,classname), nv);
5648 =for apidoc sv_setref_pvn
5650 Copies a string into a new SV, optionally blessing the SV. The length of the
5651 string must be specified with C<n>. The C<rv> argument will be upgraded to
5652 an RV. That RV will be modified to point to the new SV. The C<classname>
5653 argument indicates the package for the blessing. Set C<classname> to
5654 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5655 a reference count of 1.
5657 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5663 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5665 sv_setpvn(newSVrv(rv,classname), pv, n);
5670 =for apidoc sv_bless
5672 Blesses an SV into a specified package. The SV must be an RV. The package
5673 must be designated by its stash (see C<gv_stashpv()>). The reference count
5674 of the SV is unaffected.
5680 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5685 Perl_croak(aTHX_ "Can't bless non-reference value");
5687 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5688 if (SvREADONLY(tmpRef))
5689 Perl_croak(aTHX_ PL_no_modify);
5690 if (SvOBJECT(tmpRef)) {
5691 if (SvTYPE(tmpRef) != SVt_PVIO)
5693 SvREFCNT_dec(SvSTASH(tmpRef));
5696 SvOBJECT_on(tmpRef);
5697 if (SvTYPE(tmpRef) != SVt_PVIO)
5699 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5700 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5711 S_sv_unglob(pTHX_ SV *sv)
5715 assert(SvTYPE(sv) == SVt_PVGV);
5720 SvREFCNT_dec(GvSTASH(sv));
5721 GvSTASH(sv) = Nullhv;
5723 sv_unmagic(sv, '*');
5724 Safefree(GvNAME(sv));
5727 /* need to keep SvANY(sv) in the right arena */
5728 xpvmg = new_XPVMG();
5729 StructCopy(SvANY(sv), xpvmg, XPVMG);
5730 del_XPVGV(SvANY(sv));
5733 SvFLAGS(sv) &= ~SVTYPEMASK;
5734 SvFLAGS(sv) |= SVt_PVMG;
5738 =for apidoc sv_unref
5740 Unsets the RV status of the SV, and decrements the reference count of
5741 whatever was being referenced by the RV. This can almost be thought of
5742 as a reversal of C<newSVrv>. See C<SvROK_off>.
5748 Perl_sv_unref(pTHX_ SV *sv)
5752 if (SvWEAKREF(sv)) {
5760 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5763 sv_2mortal(rv); /* Schedule for freeing later */
5767 Perl_sv_taint(pTHX_ SV *sv)
5769 sv_magic((sv), Nullsv, 't', Nullch, 0);
5773 Perl_sv_untaint(pTHX_ SV *sv)
5775 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5776 MAGIC *mg = mg_find(sv, 't');
5783 Perl_sv_tainted(pTHX_ SV *sv)
5785 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5786 MAGIC *mg = mg_find(sv, 't');
5787 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5794 =for apidoc sv_setpviv
5796 Copies an integer into the given SV, also updating its string value.
5797 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5803 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5805 char buf[TYPE_CHARS(UV)];
5807 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5809 sv_setpvn(sv, ptr, ebuf - ptr);
5814 =for apidoc sv_setpviv_mg
5816 Like C<sv_setpviv>, but also handles 'set' magic.
5822 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5824 char buf[TYPE_CHARS(UV)];
5826 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5828 sv_setpvn(sv, ptr, ebuf - ptr);
5832 #if defined(PERL_IMPLICIT_CONTEXT)
5834 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5838 va_start(args, pat);
5839 sv_vsetpvf(sv, pat, &args);
5845 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5849 va_start(args, pat);
5850 sv_vsetpvf_mg(sv, pat, &args);
5856 =for apidoc sv_setpvf
5858 Processes its arguments like C<sprintf> and sets an SV to the formatted
5859 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5865 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5868 va_start(args, pat);
5869 sv_vsetpvf(sv, pat, &args);
5874 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5876 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5880 =for apidoc sv_setpvf_mg
5882 Like C<sv_setpvf>, but also handles 'set' magic.
5888 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5891 va_start(args, pat);
5892 sv_vsetpvf_mg(sv, pat, &args);
5897 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5899 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5903 #if defined(PERL_IMPLICIT_CONTEXT)
5905 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5909 va_start(args, pat);
5910 sv_vcatpvf(sv, pat, &args);
5915 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5919 va_start(args, pat);
5920 sv_vcatpvf_mg(sv, pat, &args);
5926 =for apidoc sv_catpvf
5928 Processes its arguments like C<sprintf> and appends the formatted output
5929 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5930 typically be called after calling this function to handle 'set' magic.
5936 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5939 va_start(args, pat);
5940 sv_vcatpvf(sv, pat, &args);
5945 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5947 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5951 =for apidoc sv_catpvf_mg
5953 Like C<sv_catpvf>, but also handles 'set' magic.
5959 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5962 va_start(args, pat);
5963 sv_vcatpvf_mg(sv, pat, &args);
5968 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5970 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5975 =for apidoc sv_vsetpvfn
5977 Works like C<vcatpvfn> but copies the text into the SV instead of
5984 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5986 sv_setpvn(sv, "", 0);
5987 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5991 =for apidoc sv_vcatpvfn
5993 Processes its arguments like C<vsprintf> and appends the formatted output
5994 to an SV. Uses an array of SVs if the C style variable argument list is
5995 missing (NULL). When running with taint checks enabled, indicates via
5996 C<maybe_tainted> if results are untrustworthy (often due to the use of
6003 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6011 static char nullstr[] = "(null)";
6014 /* no matter what, this is a string now */
6015 (void)SvPV_force(sv, origlen);
6017 /* special-case "", "%s", and "%_" */
6020 if (patlen == 2 && pat[0] == '%') {
6024 char *s = va_arg(*args, char*);
6025 sv_catpv(sv, s ? s : nullstr);
6027 else if (svix < svmax) {
6028 sv_catsv(sv, *svargs);
6029 if (DO_UTF8(*svargs))
6035 argsv = va_arg(*args, SV*);
6036 sv_catsv(sv, argsv);
6041 /* See comment on '_' below */
6046 patend = (char*)pat + patlen;
6047 for (p = (char*)pat; p < patend; p = q) {
6050 bool vectorize = FALSE;
6057 bool has_precis = FALSE;
6059 bool is_utf = FALSE;
6062 U8 utf8buf[UTF8_MAXLEN];
6063 STRLEN esignlen = 0;
6065 char *eptr = Nullch;
6067 /* Times 4: a decimal digit takes more than 3 binary digits.
6068 * NV_DIG: mantissa takes than many decimal digits.
6069 * Plus 32: Playing safe. */
6070 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6071 /* large enough for "%#.#f" --chip */
6072 /* what about long double NVs? --jhi */
6075 U8 *vecstr = Null(U8*);
6087 STRLEN dotstrlen = 1;
6088 I32 epix = 0; /* explicit parameter index */
6089 I32 ewix = 0; /* explicit width index */
6090 bool asterisk = FALSE;
6092 for (q = p; q < patend && *q != '%'; ++q) ;
6094 sv_catpvn(sv, p, q - p);
6123 case '*': /* printf("%*vX",":",$ipv6addr) */
6128 vecsv = va_arg(*args, SV*);
6129 else if (svix < svmax)
6130 vecsv = svargs[svix++];
6133 dotstr = SvPVx(vecsv,dotstrlen);
6161 case '1': case '2': case '3':
6162 case '4': case '5': case '6':
6163 case '7': case '8': case '9':
6166 width = width * 10 + (*q++ - '0');
6168 if (asterisk && ewix == 0) {
6173 } else if (epix == 0) {
6185 i = va_arg(*args, int);
6187 i = (ewix ? ewix <= svmax : svix < svmax) ?
6188 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6190 width = (i < 0) ? -i : i;
6199 i = va_arg(*args, int);
6201 i = (ewix ? ewix <= svmax : svix < svmax)
6202 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6203 precis = (i < 0) ? 0 : i;
6209 precis = precis * 10 + (*q++ - '0');
6216 vecsv = va_arg(*args, SV*);
6217 vecstr = (U8*)SvPVx(vecsv,veclen);
6218 utf = DO_UTF8(vecsv);
6220 else if (epix ? epix <= svmax : svix < svmax) {
6221 vecsv = svargs[epix ? epix-1 : svix++];
6222 vecstr = (U8*)SvPVx(vecsv,veclen);
6223 utf = DO_UTF8(vecsv);
6234 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6245 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6246 if (*(q + 1) == 'l') { /* lld, llf */
6273 uv = va_arg(*args, int);
6275 uv = (epix ? epix <= svmax : svix < svmax) ?
6276 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6277 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6278 eptr = (char*)utf8buf;
6279 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6291 eptr = va_arg(*args, char*);
6293 #ifdef MACOS_TRADITIONAL
6294 /* On MacOS, %#s format is used for Pascal strings */
6299 elen = strlen(eptr);
6302 elen = sizeof nullstr - 1;
6305 else if (epix ? epix <= svmax : svix < svmax) {
6306 argsv = svargs[epix ? epix-1 : svix++];
6307 eptr = SvPVx(argsv, elen);
6308 if (DO_UTF8(argsv)) {
6309 if (has_precis && precis < elen) {
6311 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6314 if (width) { /* fudge width (can't fudge elen) */
6315 width += elen - sv_len_utf8(argsv);
6324 * The "%_" hack might have to be changed someday,
6325 * if ISO or ANSI decide to use '_' for something.
6326 * So we keep it hidden from users' code.
6330 argsv = va_arg(*args,SV*);
6331 eptr = SvPVx(argsv, elen);
6337 if (has_precis && elen > precis)
6347 uv = PTR2UV(va_arg(*args, void*));
6349 uv = (epix ? epix <= svmax : svix < svmax) ?
6350 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6370 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6380 case 'h': iv = (short)va_arg(*args, int); break;
6381 default: iv = va_arg(*args, int); break;
6382 case 'l': iv = va_arg(*args, long); break;
6383 case 'V': iv = va_arg(*args, IV); break;
6385 case 'q': iv = va_arg(*args, Quad_t); break;
6390 iv = (epix ? epix <= svmax : svix < svmax) ?
6391 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6393 case 'h': iv = (short)iv; break;
6395 case 'l': iv = (long)iv; break;
6398 case 'q': iv = (Quad_t)iv; break;
6405 esignbuf[esignlen++] = plus;
6409 esignbuf[esignlen++] = '-';
6453 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6463 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6464 default: uv = va_arg(*args, unsigned); break;
6465 case 'l': uv = va_arg(*args, unsigned long); break;
6466 case 'V': uv = va_arg(*args, UV); break;
6468 case 'q': uv = va_arg(*args, Quad_t); break;
6473 uv = (epix ? epix <= svmax : svix < svmax) ?
6474 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6476 case 'h': uv = (unsigned short)uv; break;
6478 case 'l': uv = (unsigned long)uv; break;
6481 case 'q': uv = (Quad_t)uv; break;
6487 eptr = ebuf + sizeof ebuf;
6493 p = (char*)((c == 'X')
6494 ? "0123456789ABCDEF" : "0123456789abcdef");
6500 esignbuf[esignlen++] = '0';
6501 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6507 *--eptr = '0' + dig;
6509 if (alt && *eptr != '0')
6515 *--eptr = '0' + dig;
6518 esignbuf[esignlen++] = '0';
6519 esignbuf[esignlen++] = 'b';
6522 default: /* it had better be ten or less */
6523 #if defined(PERL_Y2KWARN)
6524 if (ckWARN(WARN_Y2K)) {
6526 char *s = SvPV(sv,n);
6527 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6528 && (n == 2 || !isDIGIT(s[n-3])))
6530 Perl_warner(aTHX_ WARN_Y2K,
6531 "Possible Y2K bug: %%%c %s",
6532 c, "format string following '19'");
6538 *--eptr = '0' + dig;
6539 } while (uv /= base);
6542 elen = (ebuf + sizeof ebuf) - eptr;
6545 zeros = precis - elen;
6546 else if (precis == 0 && elen == 1 && *eptr == '0')
6551 /* FLOATING POINT */
6554 c = 'f'; /* maybe %F isn't supported here */
6560 /* This is evil, but floating point is even more evil */
6564 nv = va_arg(*args, NV);
6566 nv = (epix ? epix <= svmax : svix < svmax) ?
6567 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6570 if (c != 'e' && c != 'E') {
6572 (void)Perl_frexp(nv, &i);
6573 if (i == PERL_INT_MIN)
6574 Perl_die(aTHX_ "panic: frexp");
6576 need = BIT_DIGITS(i);
6578 need += has_precis ? precis : 6; /* known default */
6582 need += 20; /* fudge factor */
6583 if (PL_efloatsize < need) {
6584 Safefree(PL_efloatbuf);
6585 PL_efloatsize = need + 20; /* more fudge */
6586 New(906, PL_efloatbuf, PL_efloatsize, char);
6587 PL_efloatbuf[0] = '\0';
6590 eptr = ebuf + sizeof ebuf;
6593 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6595 /* Copy the one or more characters in a long double
6596 * format before the 'base' ([efgEFG]) character to
6597 * the format string. */
6598 static char const prifldbl[] = PERL_PRIfldbl;
6599 char const *p = prifldbl + sizeof(prifldbl) - 3;
6600 while (p >= prifldbl) { *--eptr = *p--; }
6605 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6610 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6623 STORE_NUMERIC_STANDARD_SET_LOCAL();
6624 #ifdef USE_LOCALE_NUMERIC
6625 if (!was_standard && maybe_tainted)
6626 *maybe_tainted = TRUE;
6628 (void)sprintf(PL_efloatbuf, eptr, nv);
6629 RESTORE_NUMERIC_STANDARD();
6632 eptr = PL_efloatbuf;
6633 elen = strlen(PL_efloatbuf);
6640 i = SvCUR(sv) - origlen;
6643 case 'h': *(va_arg(*args, short*)) = i; break;
6644 default: *(va_arg(*args, int*)) = i; break;
6645 case 'l': *(va_arg(*args, long*)) = i; break;
6646 case 'V': *(va_arg(*args, IV*)) = i; break;
6648 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6652 else if (epix ? epix <= svmax : svix < svmax)
6653 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6654 continue; /* not "break" */
6661 if (!args && ckWARN(WARN_PRINTF) &&
6662 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6663 SV *msg = sv_newmortal();
6664 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6665 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6668 Perl_sv_catpvf(aTHX_ msg,
6669 "\"%%%c\"", c & 0xFF);
6671 Perl_sv_catpvf(aTHX_ msg,
6672 "\"%%\\%03"UVof"\"",
6675 sv_catpv(msg, "end of string");
6676 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6679 /* output mangled stuff ... */
6685 /* ... right here, because formatting flags should not apply */
6686 SvGROW(sv, SvCUR(sv) + elen + 1);
6688 memcpy(p, eptr, elen);
6691 SvCUR(sv) = p - SvPVX(sv);
6692 continue; /* not "break" */
6695 have = esignlen + zeros + elen;
6696 need = (have > width ? have : width);
6699 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6701 if (esignlen && fill == '0') {
6702 for (i = 0; i < esignlen; i++)
6706 memset(p, fill, gap);
6709 if (esignlen && fill != '0') {
6710 for (i = 0; i < esignlen; i++)
6714 for (i = zeros; i; i--)
6718 memcpy(p, eptr, elen);
6722 memset(p, ' ', gap);
6727 memcpy(p, dotstr, dotstrlen);
6731 vectorize = FALSE; /* done iterating over vecstr */
6736 SvCUR(sv) = p - SvPVX(sv);
6744 #if defined(USE_ITHREADS)
6746 #if defined(USE_THREADS)
6747 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6750 #ifndef GpREFCNT_inc
6751 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6755 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6756 #define av_dup(s) (AV*)sv_dup((SV*)s)
6757 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6758 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6759 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6760 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6761 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6762 #define io_dup(s) (IO*)sv_dup((SV*)s)
6763 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6764 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6765 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6766 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6767 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6770 Perl_re_dup(pTHX_ REGEXP *r)
6772 /* XXX fix when pmop->op_pmregexp becomes shared */
6773 return ReREFCNT_inc(r);
6777 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6781 return (PerlIO*)NULL;
6783 /* look for it in the table first */
6784 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6788 /* create anew and remember what it is */
6789 ret = PerlIO_fdupopen(fp);
6790 ptr_table_store(PL_ptr_table, fp, ret);
6795 Perl_dirp_dup(pTHX_ DIR *dp)
6804 Perl_gp_dup(pTHX_ GP *gp)
6809 /* look for it in the table first */
6810 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6814 /* create anew and remember what it is */
6815 Newz(0, ret, 1, GP);
6816 ptr_table_store(PL_ptr_table, gp, ret);
6819 ret->gp_refcnt = 0; /* must be before any other dups! */
6820 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6821 ret->gp_io = io_dup_inc(gp->gp_io);
6822 ret->gp_form = cv_dup_inc(gp->gp_form);
6823 ret->gp_av = av_dup_inc(gp->gp_av);
6824 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6825 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6826 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6827 ret->gp_cvgen = gp->gp_cvgen;
6828 ret->gp_flags = gp->gp_flags;
6829 ret->gp_line = gp->gp_line;
6830 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6835 Perl_mg_dup(pTHX_ MAGIC *mg)
6837 MAGIC *mgret = (MAGIC*)NULL;
6840 return (MAGIC*)NULL;
6841 /* look for it in the table first */
6842 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6846 for (; mg; mg = mg->mg_moremagic) {
6848 Newz(0, nmg, 1, MAGIC);
6852 mgprev->mg_moremagic = nmg;
6853 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6854 nmg->mg_private = mg->mg_private;
6855 nmg->mg_type = mg->mg_type;
6856 nmg->mg_flags = mg->mg_flags;
6857 if (mg->mg_type == 'r') {
6858 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6861 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6862 ? sv_dup_inc(mg->mg_obj)
6863 : sv_dup(mg->mg_obj);
6865 nmg->mg_len = mg->mg_len;
6866 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6867 if (mg->mg_ptr && mg->mg_type != 'g') {
6868 if (mg->mg_len >= 0) {
6869 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6870 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6871 AMT *amtp = (AMT*)mg->mg_ptr;
6872 AMT *namtp = (AMT*)nmg->mg_ptr;
6874 for (i = 1; i < NofAMmeth; i++) {
6875 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6879 else if (mg->mg_len == HEf_SVKEY)
6880 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6888 Perl_ptr_table_new(pTHX)
6891 Newz(0, tbl, 1, PTR_TBL_t);
6894 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6899 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6901 PTR_TBL_ENT_t *tblent;
6902 UV hash = PTR2UV(sv);
6904 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6905 for (; tblent; tblent = tblent->next) {
6906 if (tblent->oldval == sv)
6907 return tblent->newval;
6913 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6915 PTR_TBL_ENT_t *tblent, **otblent;
6916 /* XXX this may be pessimal on platforms where pointers aren't good
6917 * hash values e.g. if they grow faster in the most significant
6919 UV hash = PTR2UV(oldv);
6923 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6924 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6925 if (tblent->oldval == oldv) {
6926 tblent->newval = newv;
6931 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6932 tblent->oldval = oldv;
6933 tblent->newval = newv;
6934 tblent->next = *otblent;
6937 if (i && tbl->tbl_items > tbl->tbl_max)
6938 ptr_table_split(tbl);
6942 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6944 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6945 UV oldsize = tbl->tbl_max + 1;
6946 UV newsize = oldsize * 2;
6949 Renew(ary, newsize, PTR_TBL_ENT_t*);
6950 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6951 tbl->tbl_max = --newsize;
6953 for (i=0; i < oldsize; i++, ary++) {
6954 PTR_TBL_ENT_t **curentp, **entp, *ent;
6957 curentp = ary + oldsize;
6958 for (entp = ary, ent = *ary; ent; ent = *entp) {
6959 if ((newsize & PTR2UV(ent->oldval)) != i) {
6961 ent->next = *curentp;
6976 Perl_sv_dup(pTHX_ SV *sstr)
6980 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6982 /* look for it in the table first */
6983 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6987 /* create anew and remember what it is */
6989 ptr_table_store(PL_ptr_table, sstr, dstr);
6992 SvFLAGS(dstr) = SvFLAGS(sstr);
6993 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6994 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6997 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6998 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6999 PL_watch_pvx, SvPVX(sstr));
7002 switch (SvTYPE(sstr)) {
7007 SvANY(dstr) = new_XIV();
7008 SvIVX(dstr) = SvIVX(sstr);
7011 SvANY(dstr) = new_XNV();
7012 SvNVX(dstr) = SvNVX(sstr);
7015 SvANY(dstr) = new_XRV();
7016 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7019 SvANY(dstr) = new_XPV();
7020 SvCUR(dstr) = SvCUR(sstr);
7021 SvLEN(dstr) = SvLEN(sstr);
7023 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7024 else if (SvPVX(sstr) && SvLEN(sstr))
7025 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7027 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7030 SvANY(dstr) = new_XPVIV();
7031 SvCUR(dstr) = SvCUR(sstr);
7032 SvLEN(dstr) = SvLEN(sstr);
7033 SvIVX(dstr) = SvIVX(sstr);
7035 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7036 else if (SvPVX(sstr) && SvLEN(sstr))
7037 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7039 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7042 SvANY(dstr) = new_XPVNV();
7043 SvCUR(dstr) = SvCUR(sstr);
7044 SvLEN(dstr) = SvLEN(sstr);
7045 SvIVX(dstr) = SvIVX(sstr);
7046 SvNVX(dstr) = SvNVX(sstr);
7048 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7049 else if (SvPVX(sstr) && SvLEN(sstr))
7050 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7052 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7055 SvANY(dstr) = new_XPVMG();
7056 SvCUR(dstr) = SvCUR(sstr);
7057 SvLEN(dstr) = SvLEN(sstr);
7058 SvIVX(dstr) = SvIVX(sstr);
7059 SvNVX(dstr) = SvNVX(sstr);
7060 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7061 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7063 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7064 else if (SvPVX(sstr) && SvLEN(sstr))
7065 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7067 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7070 SvANY(dstr) = new_XPVBM();
7071 SvCUR(dstr) = SvCUR(sstr);
7072 SvLEN(dstr) = SvLEN(sstr);
7073 SvIVX(dstr) = SvIVX(sstr);
7074 SvNVX(dstr) = SvNVX(sstr);
7075 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7076 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7078 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7079 else if (SvPVX(sstr) && SvLEN(sstr))
7080 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7082 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7083 BmRARE(dstr) = BmRARE(sstr);
7084 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7085 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7088 SvANY(dstr) = new_XPVLV();
7089 SvCUR(dstr) = SvCUR(sstr);
7090 SvLEN(dstr) = SvLEN(sstr);
7091 SvIVX(dstr) = SvIVX(sstr);
7092 SvNVX(dstr) = SvNVX(sstr);
7093 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7094 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7096 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7097 else if (SvPVX(sstr) && SvLEN(sstr))
7098 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7100 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7101 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7102 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7103 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7104 LvTYPE(dstr) = LvTYPE(sstr);
7107 SvANY(dstr) = new_XPVGV();
7108 SvCUR(dstr) = SvCUR(sstr);
7109 SvLEN(dstr) = SvLEN(sstr);
7110 SvIVX(dstr) = SvIVX(sstr);
7111 SvNVX(dstr) = SvNVX(sstr);
7112 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7113 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7115 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7116 else if (SvPVX(sstr) && SvLEN(sstr))
7117 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7119 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7120 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7121 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7122 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7123 GvFLAGS(dstr) = GvFLAGS(sstr);
7124 GvGP(dstr) = gp_dup(GvGP(sstr));
7125 (void)GpREFCNT_inc(GvGP(dstr));
7128 SvANY(dstr) = new_XPVIO();
7129 SvCUR(dstr) = SvCUR(sstr);
7130 SvLEN(dstr) = SvLEN(sstr);
7131 SvIVX(dstr) = SvIVX(sstr);
7132 SvNVX(dstr) = SvNVX(sstr);
7133 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7134 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7136 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7137 else if (SvPVX(sstr) && SvLEN(sstr))
7138 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7140 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7141 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7142 if (IoOFP(sstr) == IoIFP(sstr))
7143 IoOFP(dstr) = IoIFP(dstr);
7145 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7146 /* PL_rsfp_filters entries have fake IoDIRP() */
7147 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7148 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7150 IoDIRP(dstr) = IoDIRP(sstr);
7151 IoLINES(dstr) = IoLINES(sstr);
7152 IoPAGE(dstr) = IoPAGE(sstr);
7153 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7154 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7155 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7156 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7157 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7158 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7159 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7160 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7161 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7162 IoTYPE(dstr) = IoTYPE(sstr);
7163 IoFLAGS(dstr) = IoFLAGS(sstr);
7166 SvANY(dstr) = new_XPVAV();
7167 SvCUR(dstr) = SvCUR(sstr);
7168 SvLEN(dstr) = SvLEN(sstr);
7169 SvIVX(dstr) = SvIVX(sstr);
7170 SvNVX(dstr) = SvNVX(sstr);
7171 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7172 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7173 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7174 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7175 if (AvARRAY((AV*)sstr)) {
7176 SV **dst_ary, **src_ary;
7177 SSize_t items = AvFILLp((AV*)sstr) + 1;
7179 src_ary = AvARRAY((AV*)sstr);
7180 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7181 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7182 SvPVX(dstr) = (char*)dst_ary;
7183 AvALLOC((AV*)dstr) = dst_ary;
7184 if (AvREAL((AV*)sstr)) {
7186 *dst_ary++ = sv_dup_inc(*src_ary++);
7190 *dst_ary++ = sv_dup(*src_ary++);
7192 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7193 while (items-- > 0) {
7194 *dst_ary++ = &PL_sv_undef;
7198 SvPVX(dstr) = Nullch;
7199 AvALLOC((AV*)dstr) = (SV**)NULL;
7203 SvANY(dstr) = new_XPVHV();
7204 SvCUR(dstr) = SvCUR(sstr);
7205 SvLEN(dstr) = SvLEN(sstr);
7206 SvIVX(dstr) = SvIVX(sstr);
7207 SvNVX(dstr) = SvNVX(sstr);
7208 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7209 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7210 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7211 if (HvARRAY((HV*)sstr)) {
7213 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7214 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7215 Newz(0, dxhv->xhv_array,
7216 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7217 while (i <= sxhv->xhv_max) {
7218 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7219 !!HvSHAREKEYS(sstr));
7222 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7225 SvPVX(dstr) = Nullch;
7226 HvEITER((HV*)dstr) = (HE*)NULL;
7228 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7229 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7232 SvANY(dstr) = new_XPVFM();
7233 FmLINES(dstr) = FmLINES(sstr);
7237 SvANY(dstr) = new_XPVCV();
7239 SvCUR(dstr) = SvCUR(sstr);
7240 SvLEN(dstr) = SvLEN(sstr);
7241 SvIVX(dstr) = SvIVX(sstr);
7242 SvNVX(dstr) = SvNVX(sstr);
7243 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7244 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7245 if (SvPVX(sstr) && SvLEN(sstr))
7246 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7248 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7249 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7250 CvSTART(dstr) = CvSTART(sstr);
7251 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7252 CvXSUB(dstr) = CvXSUB(sstr);
7253 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7254 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7255 CvDEPTH(dstr) = CvDEPTH(sstr);
7256 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7257 /* XXX padlists are real, but pretend to be not */
7258 AvREAL_on(CvPADLIST(sstr));
7259 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7260 AvREAL_off(CvPADLIST(sstr));
7261 AvREAL_off(CvPADLIST(dstr));
7264 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7265 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7266 CvFLAGS(dstr) = CvFLAGS(sstr);
7269 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7273 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7280 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7285 return (PERL_CONTEXT*)NULL;
7287 /* look for it in the table first */
7288 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7292 /* create anew and remember what it is */
7293 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7294 ptr_table_store(PL_ptr_table, cxs, ncxs);
7297 PERL_CONTEXT *cx = &cxs[ix];
7298 PERL_CONTEXT *ncx = &ncxs[ix];
7299 ncx->cx_type = cx->cx_type;
7300 if (CxTYPE(cx) == CXt_SUBST) {
7301 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7304 ncx->blk_oldsp = cx->blk_oldsp;
7305 ncx->blk_oldcop = cx->blk_oldcop;
7306 ncx->blk_oldretsp = cx->blk_oldretsp;
7307 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7308 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7309 ncx->blk_oldpm = cx->blk_oldpm;
7310 ncx->blk_gimme = cx->blk_gimme;
7311 switch (CxTYPE(cx)) {
7313 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7314 ? cv_dup_inc(cx->blk_sub.cv)
7315 : cv_dup(cx->blk_sub.cv));
7316 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7317 ? av_dup_inc(cx->blk_sub.argarray)
7319 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7320 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7321 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7322 ncx->blk_sub.lval = cx->blk_sub.lval;
7325 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7326 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7327 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7328 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7329 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7332 ncx->blk_loop.label = cx->blk_loop.label;
7333 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7334 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7335 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7336 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7337 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7338 ? cx->blk_loop.iterdata
7339 : gv_dup((GV*)cx->blk_loop.iterdata));
7340 ncx->blk_loop.oldcurpad
7341 = (SV**)ptr_table_fetch(PL_ptr_table,
7342 cx->blk_loop.oldcurpad);
7343 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7344 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7345 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7346 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7347 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7350 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7351 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7352 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7353 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7366 Perl_si_dup(pTHX_ PERL_SI *si)
7371 return (PERL_SI*)NULL;
7373 /* look for it in the table first */
7374 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7378 /* create anew and remember what it is */
7379 Newz(56, nsi, 1, PERL_SI);
7380 ptr_table_store(PL_ptr_table, si, nsi);
7382 nsi->si_stack = av_dup_inc(si->si_stack);
7383 nsi->si_cxix = si->si_cxix;
7384 nsi->si_cxmax = si->si_cxmax;
7385 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7386 nsi->si_type = si->si_type;
7387 nsi->si_prev = si_dup(si->si_prev);
7388 nsi->si_next = si_dup(si->si_next);
7389 nsi->si_markoff = si->si_markoff;
7394 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7395 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7396 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7397 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7398 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7399 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7400 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7401 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7402 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7403 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7404 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7405 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7408 #define pv_dup_inc(p) SAVEPV(p)
7409 #define pv_dup(p) SAVEPV(p)
7410 #define svp_dup_inc(p,pp) any_dup(p,pp)
7413 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7420 /* look for it in the table first */
7421 ret = ptr_table_fetch(PL_ptr_table, v);
7425 /* see if it is part of the interpreter structure */
7426 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7427 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7435 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7437 ANY *ss = proto_perl->Tsavestack;
7438 I32 ix = proto_perl->Tsavestack_ix;
7439 I32 max = proto_perl->Tsavestack_max;
7452 void (*dptr) (void*);
7453 void (*dxptr) (pTHXo_ void*);
7456 Newz(54, nss, max, ANY);
7462 case SAVEt_ITEM: /* normal string */
7463 sv = (SV*)POPPTR(ss,ix);
7464 TOPPTR(nss,ix) = sv_dup_inc(sv);
7465 sv = (SV*)POPPTR(ss,ix);
7466 TOPPTR(nss,ix) = sv_dup_inc(sv);
7468 case SAVEt_SV: /* scalar reference */
7469 sv = (SV*)POPPTR(ss,ix);
7470 TOPPTR(nss,ix) = sv_dup_inc(sv);
7471 gv = (GV*)POPPTR(ss,ix);
7472 TOPPTR(nss,ix) = gv_dup_inc(gv);
7474 case SAVEt_GENERIC_PVREF: /* generic char* */
7475 c = (char*)POPPTR(ss,ix);
7476 TOPPTR(nss,ix) = pv_dup(c);
7477 ptr = POPPTR(ss,ix);
7478 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7480 case SAVEt_GENERIC_SVREF: /* generic sv */
7481 case SAVEt_SVREF: /* scalar reference */
7482 sv = (SV*)POPPTR(ss,ix);
7483 TOPPTR(nss,ix) = sv_dup_inc(sv);
7484 ptr = POPPTR(ss,ix);
7485 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7487 case SAVEt_AV: /* array reference */
7488 av = (AV*)POPPTR(ss,ix);
7489 TOPPTR(nss,ix) = av_dup_inc(av);
7490 gv = (GV*)POPPTR(ss,ix);
7491 TOPPTR(nss,ix) = gv_dup(gv);
7493 case SAVEt_HV: /* hash reference */
7494 hv = (HV*)POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = hv_dup_inc(hv);
7496 gv = (GV*)POPPTR(ss,ix);
7497 TOPPTR(nss,ix) = gv_dup(gv);
7499 case SAVEt_INT: /* int reference */
7500 ptr = POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7502 intval = (int)POPINT(ss,ix);
7503 TOPINT(nss,ix) = intval;
7505 case SAVEt_LONG: /* long reference */
7506 ptr = POPPTR(ss,ix);
7507 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7508 longval = (long)POPLONG(ss,ix);
7509 TOPLONG(nss,ix) = longval;
7511 case SAVEt_I32: /* I32 reference */
7512 case SAVEt_I16: /* I16 reference */
7513 case SAVEt_I8: /* I8 reference */
7514 ptr = POPPTR(ss,ix);
7515 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7519 case SAVEt_IV: /* IV reference */
7520 ptr = POPPTR(ss,ix);
7521 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7525 case SAVEt_SPTR: /* SV* reference */
7526 ptr = POPPTR(ss,ix);
7527 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7528 sv = (SV*)POPPTR(ss,ix);
7529 TOPPTR(nss,ix) = sv_dup(sv);
7531 case SAVEt_VPTR: /* random* reference */
7532 ptr = POPPTR(ss,ix);
7533 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7534 ptr = POPPTR(ss,ix);
7535 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7537 case SAVEt_PPTR: /* char* reference */
7538 ptr = POPPTR(ss,ix);
7539 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7540 c = (char*)POPPTR(ss,ix);
7541 TOPPTR(nss,ix) = pv_dup(c);
7543 case SAVEt_HPTR: /* HV* reference */
7544 ptr = POPPTR(ss,ix);
7545 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7546 hv = (HV*)POPPTR(ss,ix);
7547 TOPPTR(nss,ix) = hv_dup(hv);
7549 case SAVEt_APTR: /* AV* reference */
7550 ptr = POPPTR(ss,ix);
7551 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7552 av = (AV*)POPPTR(ss,ix);
7553 TOPPTR(nss,ix) = av_dup(av);
7556 gv = (GV*)POPPTR(ss,ix);
7557 TOPPTR(nss,ix) = gv_dup(gv);
7559 case SAVEt_GP: /* scalar reference */
7560 gp = (GP*)POPPTR(ss,ix);
7561 TOPPTR(nss,ix) = gp = gp_dup(gp);
7562 (void)GpREFCNT_inc(gp);
7563 gv = (GV*)POPPTR(ss,ix);
7564 TOPPTR(nss,ix) = gv_dup_inc(c);
7565 c = (char*)POPPTR(ss,ix);
7566 TOPPTR(nss,ix) = pv_dup(c);
7573 sv = (SV*)POPPTR(ss,ix);
7574 TOPPTR(nss,ix) = sv_dup_inc(sv);
7577 ptr = POPPTR(ss,ix);
7578 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7579 /* these are assumed to be refcounted properly */
7580 switch (((OP*)ptr)->op_type) {
7587 TOPPTR(nss,ix) = ptr;
7592 TOPPTR(nss,ix) = Nullop;
7597 TOPPTR(nss,ix) = Nullop;
7600 c = (char*)POPPTR(ss,ix);
7601 TOPPTR(nss,ix) = pv_dup_inc(c);
7604 longval = POPLONG(ss,ix);
7605 TOPLONG(nss,ix) = longval;
7608 hv = (HV*)POPPTR(ss,ix);
7609 TOPPTR(nss,ix) = hv_dup_inc(hv);
7610 c = (char*)POPPTR(ss,ix);
7611 TOPPTR(nss,ix) = pv_dup_inc(c);
7615 case SAVEt_DESTRUCTOR:
7616 ptr = POPPTR(ss,ix);
7617 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7618 dptr = POPDPTR(ss,ix);
7619 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7621 case SAVEt_DESTRUCTOR_X:
7622 ptr = POPPTR(ss,ix);
7623 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7624 dxptr = POPDXPTR(ss,ix);
7625 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7627 case SAVEt_REGCONTEXT:
7633 case SAVEt_STACK_POS: /* Position on Perl stack */
7637 case SAVEt_AELEM: /* array element */
7638 sv = (SV*)POPPTR(ss,ix);
7639 TOPPTR(nss,ix) = sv_dup_inc(sv);
7642 av = (AV*)POPPTR(ss,ix);
7643 TOPPTR(nss,ix) = av_dup_inc(av);
7645 case SAVEt_HELEM: /* hash element */
7646 sv = (SV*)POPPTR(ss,ix);
7647 TOPPTR(nss,ix) = sv_dup_inc(sv);
7648 sv = (SV*)POPPTR(ss,ix);
7649 TOPPTR(nss,ix) = sv_dup_inc(sv);
7650 hv = (HV*)POPPTR(ss,ix);
7651 TOPPTR(nss,ix) = hv_dup_inc(hv);
7654 ptr = POPPTR(ss,ix);
7655 TOPPTR(nss,ix) = ptr;
7662 av = (AV*)POPPTR(ss,ix);
7663 TOPPTR(nss,ix) = av_dup(av);
7666 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7678 perl_clone(PerlInterpreter *proto_perl, UV flags)
7681 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7684 #ifdef PERL_IMPLICIT_SYS
7685 return perl_clone_using(proto_perl, flags,
7687 proto_perl->IMemShared,
7688 proto_perl->IMemParse,
7698 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7699 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7700 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7701 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7702 struct IPerlDir* ipD, struct IPerlSock* ipS,
7703 struct IPerlProc* ipP)
7705 /* XXX many of the string copies here can be optimized if they're
7706 * constants; they need to be allocated as common memory and just
7707 * their pointers copied. */
7711 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7713 PERL_SET_THX(pPerl);
7714 # else /* !PERL_OBJECT */
7715 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7716 PERL_SET_THX(my_perl);
7719 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7724 # else /* !DEBUGGING */
7725 Zero(my_perl, 1, PerlInterpreter);
7726 # endif /* DEBUGGING */
7730 PL_MemShared = ipMS;
7738 # endif /* PERL_OBJECT */
7739 #else /* !PERL_IMPLICIT_SYS */
7741 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7742 PERL_SET_THX(my_perl);
7745 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7750 # else /* !DEBUGGING */
7751 Zero(my_perl, 1, PerlInterpreter);
7752 # endif /* DEBUGGING */
7753 #endif /* PERL_IMPLICIT_SYS */
7756 PL_xiv_arenaroot = NULL;
7758 PL_xnv_arenaroot = NULL;
7760 PL_xrv_arenaroot = NULL;
7762 PL_xpv_arenaroot = NULL;
7764 PL_xpviv_arenaroot = NULL;
7765 PL_xpviv_root = NULL;
7766 PL_xpvnv_arenaroot = NULL;
7767 PL_xpvnv_root = NULL;
7768 PL_xpvcv_arenaroot = NULL;
7769 PL_xpvcv_root = NULL;
7770 PL_xpvav_arenaroot = NULL;
7771 PL_xpvav_root = NULL;
7772 PL_xpvhv_arenaroot = NULL;
7773 PL_xpvhv_root = NULL;
7774 PL_xpvmg_arenaroot = NULL;
7775 PL_xpvmg_root = NULL;
7776 PL_xpvlv_arenaroot = NULL;
7777 PL_xpvlv_root = NULL;
7778 PL_xpvbm_arenaroot = NULL;
7779 PL_xpvbm_root = NULL;
7780 PL_he_arenaroot = NULL;
7782 PL_nice_chunk = NULL;
7783 PL_nice_chunk_size = 0;
7786 PL_sv_root = Nullsv;
7787 PL_sv_arenaroot = Nullsv;
7789 PL_debug = proto_perl->Idebug;
7791 /* create SV map for pointer relocation */
7792 PL_ptr_table = ptr_table_new();
7794 /* initialize these special pointers as early as possible */
7795 SvANY(&PL_sv_undef) = NULL;
7796 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7797 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7798 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7801 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7803 SvANY(&PL_sv_no) = new_XPVNV();
7805 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7806 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7807 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7808 SvCUR(&PL_sv_no) = 0;
7809 SvLEN(&PL_sv_no) = 1;
7810 SvNVX(&PL_sv_no) = 0;
7811 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7814 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7816 SvANY(&PL_sv_yes) = new_XPVNV();
7818 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7819 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7820 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7821 SvCUR(&PL_sv_yes) = 1;
7822 SvLEN(&PL_sv_yes) = 2;
7823 SvNVX(&PL_sv_yes) = 1;
7824 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7826 /* create shared string table */
7827 PL_strtab = newHV();
7828 HvSHAREKEYS_off(PL_strtab);
7829 hv_ksplit(PL_strtab, 512);
7830 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7832 PL_compiling = proto_perl->Icompiling;
7833 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7834 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7835 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7836 if (!specialWARN(PL_compiling.cop_warnings))
7837 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7838 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7840 /* pseudo environmental stuff */
7841 PL_origargc = proto_perl->Iorigargc;
7843 New(0, PL_origargv, i+1, char*);
7844 PL_origargv[i] = '\0';
7846 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7848 PL_envgv = gv_dup(proto_perl->Ienvgv);
7849 PL_incgv = gv_dup(proto_perl->Iincgv);
7850 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7851 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7852 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7853 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7856 PL_minus_c = proto_perl->Iminus_c;
7857 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7858 PL_localpatches = proto_perl->Ilocalpatches;
7859 PL_splitstr = proto_perl->Isplitstr;
7860 PL_preprocess = proto_perl->Ipreprocess;
7861 PL_minus_n = proto_perl->Iminus_n;
7862 PL_minus_p = proto_perl->Iminus_p;
7863 PL_minus_l = proto_perl->Iminus_l;
7864 PL_minus_a = proto_perl->Iminus_a;
7865 PL_minus_F = proto_perl->Iminus_F;
7866 PL_doswitches = proto_perl->Idoswitches;
7867 PL_dowarn = proto_perl->Idowarn;
7868 PL_doextract = proto_perl->Idoextract;
7869 PL_sawampersand = proto_perl->Isawampersand;
7870 PL_unsafe = proto_perl->Iunsafe;
7871 PL_inplace = SAVEPV(proto_perl->Iinplace);
7872 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7873 PL_perldb = proto_perl->Iperldb;
7874 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7876 /* magical thingies */
7877 /* XXX time(&PL_basetime) when asked for? */
7878 PL_basetime = proto_perl->Ibasetime;
7879 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7881 PL_maxsysfd = proto_perl->Imaxsysfd;
7882 PL_multiline = proto_perl->Imultiline;
7883 PL_statusvalue = proto_perl->Istatusvalue;
7885 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7888 /* shortcuts to various I/O objects */
7889 PL_stdingv = gv_dup(proto_perl->Istdingv);
7890 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7891 PL_defgv = gv_dup(proto_perl->Idefgv);
7892 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7893 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7894 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7896 /* shortcuts to regexp stuff */
7897 PL_replgv = gv_dup(proto_perl->Ireplgv);
7899 /* shortcuts to misc objects */
7900 PL_errgv = gv_dup(proto_perl->Ierrgv);
7902 /* shortcuts to debugging objects */
7903 PL_DBgv = gv_dup(proto_perl->IDBgv);
7904 PL_DBline = gv_dup(proto_perl->IDBline);
7905 PL_DBsub = gv_dup(proto_perl->IDBsub);
7906 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7907 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7908 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7909 PL_lineary = av_dup(proto_perl->Ilineary);
7910 PL_dbargs = av_dup(proto_perl->Idbargs);
7913 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7914 PL_curstash = hv_dup(proto_perl->Tcurstash);
7915 PL_debstash = hv_dup(proto_perl->Idebstash);
7916 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7917 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7919 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7920 PL_endav = av_dup_inc(proto_perl->Iendav);
7921 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7922 PL_initav = av_dup_inc(proto_perl->Iinitav);
7924 PL_sub_generation = proto_perl->Isub_generation;
7926 /* funky return mechanisms */
7927 PL_forkprocess = proto_perl->Iforkprocess;
7929 /* subprocess state */
7930 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7932 /* internal state */
7933 PL_tainting = proto_perl->Itainting;
7934 PL_maxo = proto_perl->Imaxo;
7935 if (proto_perl->Iop_mask)
7936 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7938 PL_op_mask = Nullch;
7940 /* current interpreter roots */
7941 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7942 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7943 PL_main_start = proto_perl->Imain_start;
7944 PL_eval_root = proto_perl->Ieval_root;
7945 PL_eval_start = proto_perl->Ieval_start;
7947 /* runtime control stuff */
7948 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7949 PL_copline = proto_perl->Icopline;
7951 PL_filemode = proto_perl->Ifilemode;
7952 PL_lastfd = proto_perl->Ilastfd;
7953 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7956 PL_gensym = proto_perl->Igensym;
7957 PL_preambled = proto_perl->Ipreambled;
7958 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7959 PL_laststatval = proto_perl->Ilaststatval;
7960 PL_laststype = proto_perl->Ilaststype;
7961 PL_mess_sv = Nullsv;
7963 PL_orslen = proto_perl->Iorslen;
7964 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7965 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7967 /* interpreter atexit processing */
7968 PL_exitlistlen = proto_perl->Iexitlistlen;
7969 if (PL_exitlistlen) {
7970 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7971 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7974 PL_exitlist = (PerlExitListEntry*)NULL;
7975 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7977 PL_profiledata = NULL;
7978 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7979 /* PL_rsfp_filters entries have fake IoDIRP() */
7980 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7982 PL_compcv = cv_dup(proto_perl->Icompcv);
7983 PL_comppad = av_dup(proto_perl->Icomppad);
7984 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7985 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7986 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7987 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7988 proto_perl->Tcurpad);
7990 #ifdef HAVE_INTERP_INTERN
7991 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7994 /* more statics moved here */
7995 PL_generation = proto_perl->Igeneration;
7996 PL_DBcv = cv_dup(proto_perl->IDBcv);
7998 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7999 PL_in_clean_all = proto_perl->Iin_clean_all;
8001 PL_uid = proto_perl->Iuid;
8002 PL_euid = proto_perl->Ieuid;
8003 PL_gid = proto_perl->Igid;
8004 PL_egid = proto_perl->Iegid;
8005 PL_nomemok = proto_perl->Inomemok;
8006 PL_an = proto_perl->Ian;
8007 PL_cop_seqmax = proto_perl->Icop_seqmax;
8008 PL_op_seqmax = proto_perl->Iop_seqmax;
8009 PL_evalseq = proto_perl->Ievalseq;
8010 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8011 PL_origalen = proto_perl->Iorigalen;
8012 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8013 PL_osname = SAVEPV(proto_perl->Iosname);
8014 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8015 PL_sighandlerp = proto_perl->Isighandlerp;
8018 PL_runops = proto_perl->Irunops;
8020 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8023 PL_cshlen = proto_perl->Icshlen;
8024 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8027 PL_lex_state = proto_perl->Ilex_state;
8028 PL_lex_defer = proto_perl->Ilex_defer;
8029 PL_lex_expect = proto_perl->Ilex_expect;
8030 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8031 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8032 PL_lex_starts = proto_perl->Ilex_starts;
8033 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8034 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8035 PL_lex_op = proto_perl->Ilex_op;
8036 PL_lex_inpat = proto_perl->Ilex_inpat;
8037 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8038 PL_lex_brackets = proto_perl->Ilex_brackets;
8039 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8040 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8041 PL_lex_casemods = proto_perl->Ilex_casemods;
8042 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8043 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8045 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8046 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8047 PL_nexttoke = proto_perl->Inexttoke;
8049 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8050 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8051 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8052 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8053 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8054 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8055 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8056 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8057 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8058 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8059 PL_pending_ident = proto_perl->Ipending_ident;
8060 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8062 PL_expect = proto_perl->Iexpect;
8064 PL_multi_start = proto_perl->Imulti_start;
8065 PL_multi_end = proto_perl->Imulti_end;
8066 PL_multi_open = proto_perl->Imulti_open;
8067 PL_multi_close = proto_perl->Imulti_close;
8069 PL_error_count = proto_perl->Ierror_count;
8070 PL_subline = proto_perl->Isubline;
8071 PL_subname = sv_dup_inc(proto_perl->Isubname);
8073 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8074 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8075 PL_padix = proto_perl->Ipadix;
8076 PL_padix_floor = proto_perl->Ipadix_floor;
8077 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8079 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8080 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8081 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8082 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8083 PL_last_lop_op = proto_perl->Ilast_lop_op;
8084 PL_in_my = proto_perl->Iin_my;
8085 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8087 PL_cryptseen = proto_perl->Icryptseen;
8090 PL_hints = proto_perl->Ihints;
8092 PL_amagic_generation = proto_perl->Iamagic_generation;
8094 #ifdef USE_LOCALE_COLLATE
8095 PL_collation_ix = proto_perl->Icollation_ix;
8096 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8097 PL_collation_standard = proto_perl->Icollation_standard;
8098 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8099 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8100 #endif /* USE_LOCALE_COLLATE */
8102 #ifdef USE_LOCALE_NUMERIC
8103 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8104 PL_numeric_standard = proto_perl->Inumeric_standard;
8105 PL_numeric_local = proto_perl->Inumeric_local;
8106 PL_numeric_radix = proto_perl->Inumeric_radix;
8107 #endif /* !USE_LOCALE_NUMERIC */
8109 /* utf8 character classes */
8110 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8111 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8112 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8113 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8114 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8115 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8116 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8117 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8118 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8119 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8120 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8121 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8122 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8123 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8124 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8125 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8126 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8129 PL_last_swash_hv = Nullhv; /* reinits on demand */
8130 PL_last_swash_klen = 0;
8131 PL_last_swash_key[0]= '\0';
8132 PL_last_swash_tmps = (U8*)NULL;
8133 PL_last_swash_slen = 0;
8135 /* perly.c globals */
8136 PL_yydebug = proto_perl->Iyydebug;
8137 PL_yynerrs = proto_perl->Iyynerrs;
8138 PL_yyerrflag = proto_perl->Iyyerrflag;
8139 PL_yychar = proto_perl->Iyychar;
8140 PL_yyval = proto_perl->Iyyval;
8141 PL_yylval = proto_perl->Iyylval;
8143 PL_glob_index = proto_perl->Iglob_index;
8144 PL_srand_called = proto_perl->Isrand_called;
8145 PL_uudmap['M'] = 0; /* reinits on demand */
8146 PL_bitcount = Nullch; /* reinits on demand */
8148 if (proto_perl->Ipsig_ptr) {
8149 int sig_num[] = { SIG_NUM };
8150 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8151 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8152 for (i = 1; PL_sig_name[i]; i++) {
8153 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8154 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8158 PL_psig_ptr = (SV**)NULL;
8159 PL_psig_name = (SV**)NULL;
8162 /* thrdvar.h stuff */
8165 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8166 PL_tmps_ix = proto_perl->Ttmps_ix;
8167 PL_tmps_max = proto_perl->Ttmps_max;
8168 PL_tmps_floor = proto_perl->Ttmps_floor;
8169 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8171 while (i <= PL_tmps_ix) {
8172 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8176 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8177 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8178 Newz(54, PL_markstack, i, I32);
8179 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8180 - proto_perl->Tmarkstack);
8181 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8182 - proto_perl->Tmarkstack);
8183 Copy(proto_perl->Tmarkstack, PL_markstack,
8184 PL_markstack_ptr - PL_markstack + 1, I32);
8186 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8187 * NOTE: unlike the others! */
8188 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8189 PL_scopestack_max = proto_perl->Tscopestack_max;
8190 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8191 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8193 /* next push_return() sets PL_retstack[PL_retstack_ix]
8194 * NOTE: unlike the others! */
8195 PL_retstack_ix = proto_perl->Tretstack_ix;
8196 PL_retstack_max = proto_perl->Tretstack_max;
8197 Newz(54, PL_retstack, PL_retstack_max, OP*);
8198 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8200 /* NOTE: si_dup() looks at PL_markstack */
8201 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8203 /* PL_curstack = PL_curstackinfo->si_stack; */
8204 PL_curstack = av_dup(proto_perl->Tcurstack);
8205 PL_mainstack = av_dup(proto_perl->Tmainstack);
8207 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8208 PL_stack_base = AvARRAY(PL_curstack);
8209 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8210 - proto_perl->Tstack_base);
8211 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8213 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8214 * NOTE: unlike the others! */
8215 PL_savestack_ix = proto_perl->Tsavestack_ix;
8216 PL_savestack_max = proto_perl->Tsavestack_max;
8217 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8218 PL_savestack = ss_dup(proto_perl);
8222 ENTER; /* perl_destruct() wants to LEAVE; */
8225 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8226 PL_top_env = &PL_start_env;
8228 PL_op = proto_perl->Top;
8231 PL_Xpv = (XPV*)NULL;
8232 PL_na = proto_perl->Tna;
8234 PL_statbuf = proto_perl->Tstatbuf;
8235 PL_statcache = proto_perl->Tstatcache;
8236 PL_statgv = gv_dup(proto_perl->Tstatgv);
8237 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8239 PL_timesbuf = proto_perl->Ttimesbuf;
8242 PL_tainted = proto_perl->Ttainted;
8243 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8244 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8245 PL_rs = sv_dup_inc(proto_perl->Trs);
8246 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8247 PL_ofslen = proto_perl->Tofslen;
8248 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8249 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8250 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8251 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8252 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8253 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8255 PL_restartop = proto_perl->Trestartop;
8256 PL_in_eval = proto_perl->Tin_eval;
8257 PL_delaymagic = proto_perl->Tdelaymagic;
8258 PL_dirty = proto_perl->Tdirty;
8259 PL_localizing = proto_perl->Tlocalizing;
8261 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8262 PL_protect = proto_perl->Tprotect;
8264 PL_errors = sv_dup_inc(proto_perl->Terrors);
8265 PL_av_fetch_sv = Nullsv;
8266 PL_hv_fetch_sv = Nullsv;
8267 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8268 PL_modcount = proto_perl->Tmodcount;
8269 PL_lastgotoprobe = Nullop;
8270 PL_dumpindent = proto_perl->Tdumpindent;
8272 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8273 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8274 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8275 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8276 PL_sortcxix = proto_perl->Tsortcxix;
8277 PL_efloatbuf = Nullch; /* reinits on demand */
8278 PL_efloatsize = 0; /* reinits on demand */
8282 PL_screamfirst = NULL;
8283 PL_screamnext = NULL;
8284 PL_maxscream = -1; /* reinits on demand */
8285 PL_lastscream = Nullsv;
8287 PL_watchaddr = NULL;
8288 PL_watchok = Nullch;
8290 PL_regdummy = proto_perl->Tregdummy;
8291 PL_regcomp_parse = Nullch;
8292 PL_regxend = Nullch;
8293 PL_regcode = (regnode*)NULL;
8296 PL_regprecomp = Nullch;
8301 PL_seen_zerolen = 0;
8303 PL_regcomp_rx = (regexp*)NULL;
8305 PL_colorset = 0; /* reinits PL_colors[] */
8306 /*PL_colors[6] = {0,0,0,0,0,0};*/
8307 PL_reg_whilem_seen = 0;
8308 PL_reginput = Nullch;
8311 PL_regstartp = (I32*)NULL;
8312 PL_regendp = (I32*)NULL;
8313 PL_reglastparen = (U32*)NULL;
8314 PL_regtill = Nullch;
8316 PL_reg_start_tmp = (char**)NULL;
8317 PL_reg_start_tmpl = 0;
8318 PL_regdata = (struct reg_data*)NULL;
8321 PL_reg_eval_set = 0;
8323 PL_regprogram = (regnode*)NULL;
8325 PL_regcc = (CURCUR*)NULL;
8326 PL_reg_call_cc = (struct re_cc_state*)NULL;
8327 PL_reg_re = (regexp*)NULL;
8328 PL_reg_ganch = Nullch;
8330 PL_reg_magic = (MAGIC*)NULL;
8332 PL_reg_oldcurpm = (PMOP*)NULL;
8333 PL_reg_curpm = (PMOP*)NULL;
8334 PL_reg_oldsaved = Nullch;
8335 PL_reg_oldsavedlen = 0;
8337 PL_reg_leftiter = 0;
8338 PL_reg_poscache = Nullch;
8339 PL_reg_poscache_size= 0;
8341 /* RE engine - function pointers */
8342 PL_regcompp = proto_perl->Tregcompp;
8343 PL_regexecp = proto_perl->Tregexecp;
8344 PL_regint_start = proto_perl->Tregint_start;
8345 PL_regint_string = proto_perl->Tregint_string;
8346 PL_regfree = proto_perl->Tregfree;
8348 PL_reginterp_cnt = 0;
8349 PL_reg_starttry = 0;
8352 return (PerlInterpreter*)pPerl;
8358 #else /* !USE_ITHREADS */
8364 #endif /* USE_ITHREADS */
8367 do_report_used(pTHXo_ SV *sv)
8369 if (SvTYPE(sv) != SVTYPEMASK) {
8370 PerlIO_printf(Perl_debug_log, "****\n");
8376 do_clean_objs(pTHXo_ SV *sv)
8380 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8381 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8382 if (SvWEAKREF(sv)) {
8393 /* XXX Might want to check arrays, etc. */
8396 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8398 do_clean_named_objs(pTHXo_ SV *sv)
8400 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8401 if ( SvOBJECT(GvSV(sv)) ||
8402 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8403 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8404 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8405 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8407 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8415 do_clean_all(pTHXo_ SV *sv)
8417 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8418 SvFLAGS(sv) |= SVf_BREAK;