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;
2021 numtype = IS_NUMBER_INFINITY;
2023 /* we can have an optional exponent part */
2024 if (*s == 'e' || *s == 'E') {
2025 numtype &= ~IS_NUMBER_NEG;
2026 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2028 if (*s == '+' || *s == '-')
2033 } while (isDIGIT(*s));
2043 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2044 return IS_NUMBER_TO_INT_BY_ATOL;
2049 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2052 return sv_2pv(sv, &n_a);
2055 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2057 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2059 char *ptr = buf + TYPE_CHARS(UV);
2073 *--ptr = '0' + (uv % 10);
2082 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2087 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2088 char *tmpbuf = tbuf;
2094 if (SvGMAGICAL(sv)) {
2102 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2104 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2109 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2114 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2116 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2123 if (SvTHINKFIRST(sv)) {
2126 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2127 (SvRV(tmpstr) != SvRV(sv)))
2128 return SvPV(tmpstr,*lp);
2135 switch (SvTYPE(sv)) {
2137 if ( ((SvFLAGS(sv) &
2138 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2139 == (SVs_OBJECT|SVs_RMG))
2140 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2141 && (mg = mg_find(sv, 'r'))) {
2143 regexp *re = (regexp *)mg->mg_obj;
2146 char *fptr = "msix";
2151 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2153 while((ch = *fptr++)) {
2155 reflags[left++] = ch;
2158 reflags[right--] = ch;
2163 reflags[left] = '-';
2167 mg->mg_len = re->prelen + 4 + left;
2168 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2169 Copy("(?", mg->mg_ptr, 2, char);
2170 Copy(reflags, mg->mg_ptr+2, left, char);
2171 Copy(":", mg->mg_ptr+left+2, 1, char);
2172 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2173 mg->mg_ptr[mg->mg_len - 1] = ')';
2174 mg->mg_ptr[mg->mg_len] = 0;
2176 PL_reginterp_cnt += re->program[0].next_off;
2188 case SVt_PVBM: if (SvROK(sv))
2191 s = "SCALAR"; break;
2192 case SVt_PVLV: s = "LVALUE"; break;
2193 case SVt_PVAV: s = "ARRAY"; break;
2194 case SVt_PVHV: s = "HASH"; break;
2195 case SVt_PVCV: s = "CODE"; break;
2196 case SVt_PVGV: s = "GLOB"; break;
2197 case SVt_PVFM: s = "FORMAT"; break;
2198 case SVt_PVIO: s = "IO"; break;
2199 default: s = "UNKNOWN"; break;
2203 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2206 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2212 if (SvREADONLY(sv) && !SvOK(sv)) {
2214 if (ckWARN(WARN_UNINITIALIZED))
2220 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2221 /* XXXX 64-bit? IV may have better precision... */
2222 /* I tried changing this to be 64-bit-aware and
2223 * the t/op/numconvert.t became very, very, angry.
2225 if (SvTYPE(sv) < SVt_PVNV)
2226 sv_upgrade(sv, SVt_PVNV);
2227 /* The +20 is pure guesswork. Configure test needed. --jhi */
2228 SvGROW(sv, NV_DIG + 20);
2230 olderrno = errno; /* some Xenix systems wipe out errno here */
2232 if (SvNVX(sv) == 0.0)
2233 (void)strcpy(s,"0");
2237 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2240 #ifdef FIXNEGATIVEZERO
2241 if (*s == '-' && s[1] == '0' && !s[2])
2250 else if (SvIOKp(sv)) {
2251 U32 isIOK = SvIOK(sv);
2252 U32 isUIOK = SvIsUV(sv);
2253 char buf[TYPE_CHARS(UV)];
2256 if (SvTYPE(sv) < SVt_PVIV)
2257 sv_upgrade(sv, SVt_PVIV);
2259 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2261 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2262 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2263 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2264 SvCUR_set(sv, ebuf - ptr);
2277 if (ckWARN(WARN_UNINITIALIZED)
2278 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2283 if (SvTYPE(sv) < SVt_PV)
2284 /* Typically the caller expects that sv_any is not NULL now. */
2285 sv_upgrade(sv, SVt_PV);
2288 *lp = s - SvPVX(sv);
2291 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2292 PTR2UV(sv),SvPVX(sv)));
2296 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2297 /* Sneaky stuff here */
2301 tsv = newSVpv(tmpbuf, 0);
2317 len = strlen(tmpbuf);
2319 #ifdef FIXNEGATIVEZERO
2320 if (len == 2 && t[0] == '-' && t[1] == '0') {
2325 (void)SvUPGRADE(sv, SVt_PV);
2327 s = SvGROW(sv, len + 1);
2336 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2339 return sv_2pvbyte(sv, &n_a);
2343 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2345 return sv_2pv(sv,lp);
2349 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2352 return sv_2pvutf8(sv, &n_a);
2356 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2358 sv_utf8_upgrade(sv);
2359 return sv_2pv(sv,lp);
2362 /* This function is only called on magical items */
2364 Perl_sv_2bool(pTHX_ register SV *sv)
2374 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2375 (SvRV(tmpsv) != SvRV(sv)))
2376 return SvTRUE(tmpsv);
2377 return SvRV(sv) != 0;
2380 register XPV* Xpvtmp;
2381 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2382 (*Xpvtmp->xpv_pv > '0' ||
2383 Xpvtmp->xpv_cur > 1 ||
2384 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2391 return SvIVX(sv) != 0;
2394 return SvNVX(sv) != 0.0;
2402 =for apidoc sv_utf8_upgrade
2404 Convert the PV of an SV to its UTF8-encoded form.
2410 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2415 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2418 /* This function could be much more efficient if we had a FLAG in SVs
2419 * to signal if there are any hibit chars in the PV.
2421 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2426 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2427 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2428 SvCUR(sv) = len - 1;
2429 SvLEN(sv) = len; /* No longer know the real size. */
2431 Safefree(s); /* No longer using what was there before. */
2436 =for apidoc sv_utf8_downgrade
2438 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2439 This may not be possible if the PV contains non-byte encoding characters;
2440 if this is the case, either returns false or, if C<fail_ok> is not
2447 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2449 if (SvPOK(sv) && SvUTF8(sv)) {
2450 char *c = SvPVX(sv);
2451 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
2452 if (!utf8_to_bytes((U8*)c, &len)) {
2457 Perl_croak(aTHX_ "Wide character in %s",
2458 PL_op_desc[PL_op->op_type]);
2460 Perl_croak(aTHX_ "Wide character");
2463 SvCUR(sv) = len - 1;
2470 =for apidoc sv_utf8_encode
2472 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2473 flag so that it looks like bytes again. Nothing calls this.
2479 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2481 sv_utf8_upgrade(sv);
2486 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2490 bool has_utf = FALSE;
2491 if (!sv_utf8_downgrade(sv, TRUE))
2494 /* it is actually just a matter of turning the utf8 flag on, but
2495 * we want to make sure everything inside is valid utf8 first.
2498 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2501 while (c < SvEND(sv)) {
2512 /* Note: sv_setsv() should not be called with a source string that needs
2513 * to be reused, since it may destroy the source string if it is marked
2518 =for apidoc sv_setsv
2520 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2521 The source SV may be destroyed if it is mortal. Does not handle 'set'
2522 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2529 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2532 register U32 sflags;
2538 SV_CHECK_THINKFIRST(dstr);
2540 sstr = &PL_sv_undef;
2541 stype = SvTYPE(sstr);
2542 dtype = SvTYPE(dstr);
2546 /* There's a lot of redundancy below but we're going for speed here */
2551 if (dtype != SVt_PVGV) {
2552 (void)SvOK_off(dstr);
2560 sv_upgrade(dstr, SVt_IV);
2563 sv_upgrade(dstr, SVt_PVNV);
2567 sv_upgrade(dstr, SVt_PVIV);
2570 (void)SvIOK_only(dstr);
2571 SvIVX(dstr) = SvIVX(sstr);
2574 if (SvTAINTED(sstr))
2585 sv_upgrade(dstr, SVt_NV);
2590 sv_upgrade(dstr, SVt_PVNV);
2593 SvNVX(dstr) = SvNVX(sstr);
2594 (void)SvNOK_only(dstr);
2595 if (SvTAINTED(sstr))
2603 sv_upgrade(dstr, SVt_RV);
2604 else if (dtype == SVt_PVGV &&
2605 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2608 if (GvIMPORTED(dstr) != GVf_IMPORTED
2609 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2611 GvIMPORTED_on(dstr);
2622 sv_upgrade(dstr, SVt_PV);
2625 if (dtype < SVt_PVIV)
2626 sv_upgrade(dstr, SVt_PVIV);
2629 if (dtype < SVt_PVNV)
2630 sv_upgrade(dstr, SVt_PVNV);
2637 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2638 PL_op_name[PL_op->op_type]);
2640 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2644 if (dtype <= SVt_PVGV) {
2646 if (dtype != SVt_PVGV) {
2647 char *name = GvNAME(sstr);
2648 STRLEN len = GvNAMELEN(sstr);
2649 sv_upgrade(dstr, SVt_PVGV);
2650 sv_magic(dstr, dstr, '*', Nullch, 0);
2651 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2652 GvNAME(dstr) = savepvn(name, len);
2653 GvNAMELEN(dstr) = len;
2654 SvFAKE_on(dstr); /* can coerce to non-glob */
2656 /* ahem, death to those who redefine active sort subs */
2657 else if (PL_curstackinfo->si_type == PERLSI_SORT
2658 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2659 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2661 (void)SvOK_off(dstr);
2662 GvINTRO_off(dstr); /* one-shot flag */
2664 GvGP(dstr) = gp_ref(GvGP(sstr));
2665 if (SvTAINTED(sstr))
2667 if (GvIMPORTED(dstr) != GVf_IMPORTED
2668 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2670 GvIMPORTED_on(dstr);
2678 if (SvGMAGICAL(sstr)) {
2680 if (SvTYPE(sstr) != stype) {
2681 stype = SvTYPE(sstr);
2682 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2686 if (stype == SVt_PVLV)
2687 (void)SvUPGRADE(dstr, SVt_PVNV);
2689 (void)SvUPGRADE(dstr, stype);
2692 sflags = SvFLAGS(sstr);
2694 if (sflags & SVf_ROK) {
2695 if (dtype >= SVt_PV) {
2696 if (dtype == SVt_PVGV) {
2697 SV *sref = SvREFCNT_inc(SvRV(sstr));
2699 int intro = GvINTRO(dstr);
2704 GvINTRO_off(dstr); /* one-shot flag */
2705 Newz(602,gp, 1, GP);
2706 GvGP(dstr) = gp_ref(gp);
2707 GvSV(dstr) = NEWSV(72,0);
2708 GvLINE(dstr) = CopLINE(PL_curcop);
2709 GvEGV(dstr) = (GV*)dstr;
2712 switch (SvTYPE(sref)) {
2715 SAVESPTR(GvAV(dstr));
2717 dref = (SV*)GvAV(dstr);
2718 GvAV(dstr) = (AV*)sref;
2719 if (!GvIMPORTED_AV(dstr)
2720 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2722 GvIMPORTED_AV_on(dstr);
2727 SAVESPTR(GvHV(dstr));
2729 dref = (SV*)GvHV(dstr);
2730 GvHV(dstr) = (HV*)sref;
2731 if (!GvIMPORTED_HV(dstr)
2732 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2734 GvIMPORTED_HV_on(dstr);
2739 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2740 SvREFCNT_dec(GvCV(dstr));
2741 GvCV(dstr) = Nullcv;
2742 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2743 PL_sub_generation++;
2745 SAVESPTR(GvCV(dstr));
2748 dref = (SV*)GvCV(dstr);
2749 if (GvCV(dstr) != (CV*)sref) {
2750 CV* cv = GvCV(dstr);
2752 if (!GvCVGEN((GV*)dstr) &&
2753 (CvROOT(cv) || CvXSUB(cv)))
2756 /* ahem, death to those who redefine
2757 * active sort subs */
2758 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2759 PL_sortcop == CvSTART(cv))
2761 "Can't redefine active sort subroutine %s",
2762 GvENAME((GV*)dstr));
2763 /* Redefining a sub - warning is mandatory if
2764 it was a const and its value changed. */
2765 if (ckWARN(WARN_REDEFINE)
2767 && (!CvCONST((CV*)sref)
2768 || sv_cmp(cv_const_sv(cv),
2769 cv_const_sv((CV*)sref)))))
2771 Perl_warner(aTHX_ WARN_REDEFINE,
2773 ? "Constant subroutine %s redefined"
2774 : "Subroutine %s redefined",
2775 GvENAME((GV*)dstr));
2778 cv_ckproto(cv, (GV*)dstr,
2779 SvPOK(sref) ? SvPVX(sref) : Nullch);
2781 GvCV(dstr) = (CV*)sref;
2782 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2783 GvASSUMECV_on(dstr);
2784 PL_sub_generation++;
2786 if (!GvIMPORTED_CV(dstr)
2787 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2789 GvIMPORTED_CV_on(dstr);
2794 SAVESPTR(GvIOp(dstr));
2796 dref = (SV*)GvIOp(dstr);
2797 GvIOp(dstr) = (IO*)sref;
2801 SAVESPTR(GvFORM(dstr));
2803 dref = (SV*)GvFORM(dstr);
2804 GvFORM(dstr) = (CV*)sref;
2808 SAVESPTR(GvSV(dstr));
2810 dref = (SV*)GvSV(dstr);
2812 if (!GvIMPORTED_SV(dstr)
2813 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2815 GvIMPORTED_SV_on(dstr);
2823 if (SvTAINTED(sstr))
2828 (void)SvOOK_off(dstr); /* backoff */
2830 Safefree(SvPVX(dstr));
2831 SvLEN(dstr)=SvCUR(dstr)=0;
2834 (void)SvOK_off(dstr);
2835 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2837 if (sflags & SVp_NOK) {
2839 SvNVX(dstr) = SvNVX(sstr);
2841 if (sflags & SVp_IOK) {
2842 (void)SvIOK_on(dstr);
2843 SvIVX(dstr) = SvIVX(sstr);
2844 if (sflags & SVf_IVisUV)
2847 if (SvAMAGIC(sstr)) {
2851 else if (sflags & SVp_POK) {
2854 * Check to see if we can just swipe the string. If so, it's a
2855 * possible small lose on short strings, but a big win on long ones.
2856 * It might even be a win on short strings if SvPVX(dstr)
2857 * has to be allocated and SvPVX(sstr) has to be freed.
2860 if (SvTEMP(sstr) && /* slated for free anyway? */
2861 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2862 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2863 SvLEN(sstr) && /* and really is a string */
2864 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
2866 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2868 SvFLAGS(dstr) &= ~SVf_OOK;
2869 Safefree(SvPVX(dstr) - SvIVX(dstr));
2871 else if (SvLEN(dstr))
2872 Safefree(SvPVX(dstr));
2874 (void)SvPOK_only(dstr);
2875 SvPV_set(dstr, SvPVX(sstr));
2876 SvLEN_set(dstr, SvLEN(sstr));
2877 SvCUR_set(dstr, SvCUR(sstr));
2880 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2881 SvPV_set(sstr, Nullch);
2886 else { /* have to copy actual string */
2887 STRLEN len = SvCUR(sstr);
2889 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2890 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2891 SvCUR_set(dstr, len);
2892 *SvEND(dstr) = '\0';
2893 (void)SvPOK_only(dstr);
2895 if ((sflags & SVf_UTF8) && !IN_BYTE)
2898 if (sflags & SVp_NOK) {
2900 SvNVX(dstr) = SvNVX(sstr);
2902 if (sflags & SVp_IOK) {
2903 (void)SvIOK_on(dstr);
2904 SvIVX(dstr) = SvIVX(sstr);
2905 if (sflags & SVf_IVisUV)
2909 else if (sflags & SVp_NOK) {
2910 SvNVX(dstr) = SvNVX(sstr);
2911 (void)SvNOK_only(dstr);
2912 if (sflags & SVf_IOK) {
2913 (void)SvIOK_on(dstr);
2914 SvIVX(dstr) = SvIVX(sstr);
2915 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2916 if (sflags & SVf_IVisUV)
2920 else if (sflags & SVp_IOK) {
2921 (void)SvIOK_only(dstr);
2922 SvIVX(dstr) = SvIVX(sstr);
2923 if (sflags & SVf_IVisUV)
2927 if (dtype == SVt_PVGV) {
2928 if (ckWARN(WARN_MISC))
2929 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2932 (void)SvOK_off(dstr);
2934 if (SvTAINTED(sstr))
2939 =for apidoc sv_setsv_mg
2941 Like C<sv_setsv>, but also handles 'set' magic.
2947 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2949 sv_setsv(dstr,sstr);
2954 =for apidoc sv_setpvn
2956 Copies a string into an SV. The C<len> parameter indicates the number of
2957 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2963 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2965 register char *dptr;
2967 /* len is STRLEN which is unsigned, need to copy to signed */
2971 SV_CHECK_THINKFIRST(sv);
2976 (void)SvUPGRADE(sv, SVt_PV);
2978 SvGROW(sv, len + 1);
2980 Move(ptr,dptr,len,char);
2983 (void)SvPOK_only(sv); /* validate pointer */
2988 =for apidoc sv_setpvn_mg
2990 Like C<sv_setpvn>, but also handles 'set' magic.
2996 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2998 sv_setpvn(sv,ptr,len);
3003 =for apidoc sv_setpv
3005 Copies a string into an SV. The string must be null-terminated. Does not
3006 handle 'set' magic. See C<sv_setpv_mg>.
3012 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3014 register STRLEN len;
3016 SV_CHECK_THINKFIRST(sv);
3022 (void)SvUPGRADE(sv, SVt_PV);
3024 SvGROW(sv, len + 1);
3025 Move(ptr,SvPVX(sv),len+1,char);
3027 (void)SvPOK_only(sv); /* validate pointer */
3032 =for apidoc sv_setpv_mg
3034 Like C<sv_setpv>, but also handles 'set' magic.
3040 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3047 =for apidoc sv_usepvn
3049 Tells an SV to use C<ptr> to find its string value. Normally the string is
3050 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3051 The C<ptr> should point to memory that was allocated by C<malloc>. The
3052 string length, C<len>, must be supplied. This function will realloc the
3053 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3054 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3055 See C<sv_usepvn_mg>.
3061 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3063 SV_CHECK_THINKFIRST(sv);
3064 (void)SvUPGRADE(sv, SVt_PV);
3069 (void)SvOOK_off(sv);
3070 if (SvPVX(sv) && SvLEN(sv))
3071 Safefree(SvPVX(sv));
3072 Renew(ptr, len+1, char);
3075 SvLEN_set(sv, len+1);
3077 (void)SvPOK_only(sv); /* validate pointer */
3082 =for apidoc sv_usepvn_mg
3084 Like C<sv_usepvn>, but also handles 'set' magic.
3090 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3092 sv_usepvn(sv,ptr,len);
3097 Perl_sv_force_normal(pTHX_ register SV *sv)
3099 if (SvREADONLY(sv)) {
3102 char *pvx = SvPVX(sv);
3103 STRLEN len = SvCUR(sv);
3104 U32 hash = SvUVX(sv);
3105 SvGROW(sv, len + 1);
3106 Move(pvx,SvPVX(sv),len,char);
3110 unsharepvn(pvx,len,hash);
3112 else if (PL_curcop != &PL_compiling)
3113 Perl_croak(aTHX_ PL_no_modify);
3117 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3124 Efficient removal of characters from the beginning of the string buffer.
3125 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3126 the string buffer. The C<ptr> becomes the first character of the adjusted
3133 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3137 register STRLEN delta;
3139 if (!ptr || !SvPOKp(sv))
3141 SV_CHECK_THINKFIRST(sv);
3142 if (SvTYPE(sv) < SVt_PVIV)
3143 sv_upgrade(sv,SVt_PVIV);
3146 if (!SvLEN(sv)) { /* make copy of shared string */
3147 char *pvx = SvPVX(sv);
3148 STRLEN len = SvCUR(sv);
3149 SvGROW(sv, len + 1);
3150 Move(pvx,SvPVX(sv),len,char);
3154 SvFLAGS(sv) |= SVf_OOK;
3156 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3157 delta = ptr - SvPVX(sv);
3165 =for apidoc sv_catpvn
3167 Concatenates the string onto the end of the string which is in the SV. The
3168 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3169 'set' magic. See C<sv_catpvn_mg>.
3175 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3180 junk = SvPV_force(sv, tlen);
3181 SvGROW(sv, tlen + len + 1);
3184 Move(ptr,SvPVX(sv)+tlen,len,char);
3187 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3192 =for apidoc sv_catpvn_mg
3194 Like C<sv_catpvn>, but also handles 'set' magic.
3200 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3202 sv_catpvn(sv,ptr,len);
3207 =for apidoc sv_catsv
3209 Concatenates the string from SV C<ssv> onto the end of the string in SV
3210 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3216 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3222 if ((s = SvPV(sstr, len))) {
3223 if (DO_UTF8(sstr)) {
3224 sv_utf8_upgrade(dstr);
3225 sv_catpvn(dstr,s,len);
3229 sv_catpvn(dstr,s,len);
3234 =for apidoc sv_catsv_mg
3236 Like C<sv_catsv>, but also handles 'set' magic.
3242 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3244 sv_catsv(dstr,sstr);
3249 =for apidoc sv_catpv
3251 Concatenates the string onto the end of the string which is in the SV.
3252 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3258 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3260 register STRLEN len;
3266 junk = SvPV_force(sv, tlen);
3268 SvGROW(sv, tlen + len + 1);
3271 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3273 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3278 =for apidoc sv_catpv_mg
3280 Like C<sv_catpv>, but also handles 'set' magic.
3286 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3293 Perl_newSV(pTHX_ STRLEN len)
3299 sv_upgrade(sv, SVt_PV);
3300 SvGROW(sv, len + 1);
3305 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3308 =for apidoc sv_magic
3310 Adds magic to an SV.
3316 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3320 if (SvREADONLY(sv)) {
3322 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3323 Perl_croak(aTHX_ PL_no_modify);
3325 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3326 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3333 (void)SvUPGRADE(sv, SVt_PVMG);
3335 Newz(702,mg, 1, MAGIC);
3336 mg->mg_moremagic = SvMAGIC(sv);
3339 if (!obj || obj == sv || how == '#' || how == 'r')
3343 mg->mg_obj = SvREFCNT_inc(obj);
3344 mg->mg_flags |= MGf_REFCOUNTED;
3347 mg->mg_len = namlen;
3350 mg->mg_ptr = savepvn(name, namlen);
3351 else if (namlen == HEf_SVKEY)
3352 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3356 mg->mg_virtual = &PL_vtbl_sv;
3359 mg->mg_virtual = &PL_vtbl_amagic;
3362 mg->mg_virtual = &PL_vtbl_amagicelem;
3368 mg->mg_virtual = &PL_vtbl_bm;
3371 mg->mg_virtual = &PL_vtbl_regdata;
3374 mg->mg_virtual = &PL_vtbl_regdatum;
3377 mg->mg_virtual = &PL_vtbl_env;
3380 mg->mg_virtual = &PL_vtbl_fm;
3383 mg->mg_virtual = &PL_vtbl_envelem;
3386 mg->mg_virtual = &PL_vtbl_mglob;
3389 mg->mg_virtual = &PL_vtbl_isa;
3392 mg->mg_virtual = &PL_vtbl_isaelem;
3395 mg->mg_virtual = &PL_vtbl_nkeys;
3402 mg->mg_virtual = &PL_vtbl_dbline;
3406 mg->mg_virtual = &PL_vtbl_mutex;
3408 #endif /* USE_THREADS */
3409 #ifdef USE_LOCALE_COLLATE
3411 mg->mg_virtual = &PL_vtbl_collxfrm;
3413 #endif /* USE_LOCALE_COLLATE */
3415 mg->mg_virtual = &PL_vtbl_pack;
3419 mg->mg_virtual = &PL_vtbl_packelem;
3422 mg->mg_virtual = &PL_vtbl_regexp;
3425 mg->mg_virtual = &PL_vtbl_sig;
3428 mg->mg_virtual = &PL_vtbl_sigelem;
3431 mg->mg_virtual = &PL_vtbl_taint;
3435 mg->mg_virtual = &PL_vtbl_uvar;
3438 mg->mg_virtual = &PL_vtbl_vec;
3441 mg->mg_virtual = &PL_vtbl_substr;
3444 mg->mg_virtual = &PL_vtbl_defelem;
3447 mg->mg_virtual = &PL_vtbl_glob;
3450 mg->mg_virtual = &PL_vtbl_arylen;
3453 mg->mg_virtual = &PL_vtbl_pos;
3456 mg->mg_virtual = &PL_vtbl_backref;
3458 case '~': /* Reserved for use by extensions not perl internals. */
3459 /* Useful for attaching extension internal data to perl vars. */
3460 /* Note that multiple extensions may clash if magical scalars */
3461 /* etc holding private data from one are passed to another. */
3465 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3469 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3473 =for apidoc sv_unmagic
3475 Removes magic from an SV.
3481 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3485 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3488 for (mg = *mgp; mg; mg = *mgp) {
3489 if (mg->mg_type == type) {
3490 MGVTBL* vtbl = mg->mg_virtual;
3491 *mgp = mg->mg_moremagic;
3492 if (vtbl && vtbl->svt_free)
3493 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3494 if (mg->mg_ptr && mg->mg_type != 'g')
3495 if (mg->mg_len >= 0)
3496 Safefree(mg->mg_ptr);
3497 else if (mg->mg_len == HEf_SVKEY)
3498 SvREFCNT_dec((SV*)mg->mg_ptr);
3499 if (mg->mg_flags & MGf_REFCOUNTED)
3500 SvREFCNT_dec(mg->mg_obj);
3504 mgp = &mg->mg_moremagic;
3508 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3515 =for apidoc sv_rvweaken
3523 Perl_sv_rvweaken(pTHX_ SV *sv)
3526 if (!SvOK(sv)) /* let undefs pass */
3529 Perl_croak(aTHX_ "Can't weaken a nonreference");
3530 else if (SvWEAKREF(sv)) {
3532 if (ckWARN(WARN_MISC))
3533 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3537 sv_add_backref(tsv, sv);
3544 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3548 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3549 av = (AV*)mg->mg_obj;
3552 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3553 SvREFCNT_dec(av); /* for sv_magic */
3559 S_sv_del_backref(pTHX_ SV *sv)
3566 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3567 Perl_croak(aTHX_ "panic: del_backref");
3568 av = (AV *)mg->mg_obj;
3573 svp[i] = &PL_sv_undef; /* XXX */
3580 =for apidoc sv_insert
3582 Inserts a string at the specified offset/length within the SV. Similar to
3583 the Perl substr() function.
3589 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3593 register char *midend;
3594 register char *bigend;
3600 Perl_croak(aTHX_ "Can't modify non-existent substring");
3601 SvPV_force(bigstr, curlen);
3602 (void)SvPOK_only_UTF8(bigstr);
3603 if (offset + len > curlen) {
3604 SvGROW(bigstr, offset+len+1);
3605 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3606 SvCUR_set(bigstr, offset+len);
3610 i = littlelen - len;
3611 if (i > 0) { /* string might grow */
3612 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3613 mid = big + offset + len;
3614 midend = bigend = big + SvCUR(bigstr);
3617 while (midend > mid) /* shove everything down */
3618 *--bigend = *--midend;
3619 Move(little,big+offset,littlelen,char);
3625 Move(little,SvPVX(bigstr)+offset,len,char);
3630 big = SvPVX(bigstr);
3633 bigend = big + SvCUR(bigstr);
3635 if (midend > bigend)
3636 Perl_croak(aTHX_ "panic: sv_insert");
3638 if (mid - big > bigend - midend) { /* faster to shorten from end */
3640 Move(little, mid, littlelen,char);
3643 i = bigend - midend;
3645 Move(midend, mid, i,char);
3649 SvCUR_set(bigstr, mid - big);
3652 else if ((i = mid - big)) { /* faster from front */
3653 midend -= littlelen;
3655 sv_chop(bigstr,midend-i);
3660 Move(little, mid, littlelen,char);
3662 else if (littlelen) {
3663 midend -= littlelen;
3664 sv_chop(bigstr,midend);
3665 Move(little,midend,littlelen,char);
3668 sv_chop(bigstr,midend);
3674 =for apidoc sv_replace
3676 Make the first argument a copy of the second, then delete the original.
3682 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3685 U32 refcnt = SvREFCNT(sv);
3686 SV_CHECK_THINKFIRST(sv);
3687 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3688 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3689 if (SvMAGICAL(sv)) {
3693 sv_upgrade(nsv, SVt_PVMG);
3694 SvMAGIC(nsv) = SvMAGIC(sv);
3695 SvFLAGS(nsv) |= SvMAGICAL(sv);
3701 assert(!SvREFCNT(sv));
3702 StructCopy(nsv,sv,SV);
3703 SvREFCNT(sv) = refcnt;
3704 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3709 =for apidoc sv_clear
3711 Clear an SV, making it empty. Does not free the memory used by the SV
3718 Perl_sv_clear(pTHX_ register SV *sv)
3722 assert(SvREFCNT(sv) == 0);
3726 if (PL_defstash) { /* Still have a symbol table? */
3731 Zero(&tmpref, 1, SV);
3732 sv_upgrade(&tmpref, SVt_RV);
3734 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3735 SvREFCNT(&tmpref) = 1;
3738 stash = SvSTASH(sv);
3739 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3742 PUSHSTACKi(PERLSI_DESTROY);
3743 SvRV(&tmpref) = SvREFCNT_inc(sv);
3748 call_sv((SV*)GvCV(destructor),
3749 G_DISCARD|G_EVAL|G_KEEPERR);
3755 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3757 del_XRV(SvANY(&tmpref));
3760 if (PL_in_clean_objs)
3761 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3763 /* DESTROY gave object new lease on life */
3769 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3770 SvOBJECT_off(sv); /* Curse the object. */
3771 if (SvTYPE(sv) != SVt_PVIO)
3772 --PL_sv_objcount; /* XXX Might want something more general */
3775 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3778 switch (SvTYPE(sv)) {
3781 IoIFP(sv) != PerlIO_stdin() &&
3782 IoIFP(sv) != PerlIO_stdout() &&
3783 IoIFP(sv) != PerlIO_stderr())
3785 io_close((IO*)sv, FALSE);
3787 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3788 PerlDir_close(IoDIRP(sv));
3789 IoDIRP(sv) = (DIR*)NULL;
3790 Safefree(IoTOP_NAME(sv));
3791 Safefree(IoFMT_NAME(sv));
3792 Safefree(IoBOTTOM_NAME(sv));
3807 SvREFCNT_dec(LvTARG(sv));
3811 Safefree(GvNAME(sv));
3812 /* cannot decrease stash refcount yet, as we might recursively delete
3813 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3814 of stash until current sv is completely gone.
3815 -- JohnPC, 27 Mar 1998 */
3816 stash = GvSTASH(sv);
3822 (void)SvOOK_off(sv);
3830 SvREFCNT_dec(SvRV(sv));
3832 else if (SvPVX(sv) && SvLEN(sv))
3833 Safefree(SvPVX(sv));
3834 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3835 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3847 switch (SvTYPE(sv)) {
3863 del_XPVIV(SvANY(sv));
3866 del_XPVNV(SvANY(sv));
3869 del_XPVMG(SvANY(sv));
3872 del_XPVLV(SvANY(sv));
3875 del_XPVAV(SvANY(sv));
3878 del_XPVHV(SvANY(sv));
3881 del_XPVCV(SvANY(sv));
3884 del_XPVGV(SvANY(sv));
3885 /* code duplication for increased performance. */
3886 SvFLAGS(sv) &= SVf_BREAK;
3887 SvFLAGS(sv) |= SVTYPEMASK;
3888 /* decrease refcount of the stash that owns this GV, if any */
3890 SvREFCNT_dec(stash);
3891 return; /* not break, SvFLAGS reset already happened */
3893 del_XPVBM(SvANY(sv));
3896 del_XPVFM(SvANY(sv));
3899 del_XPVIO(SvANY(sv));
3902 SvFLAGS(sv) &= SVf_BREAK;
3903 SvFLAGS(sv) |= SVTYPEMASK;
3907 Perl_sv_newref(pTHX_ SV *sv)
3910 ATOMIC_INC(SvREFCNT(sv));
3917 Free the memory used by an SV.
3923 Perl_sv_free(pTHX_ SV *sv)
3926 int refcount_is_zero;
3930 if (SvREFCNT(sv) == 0) {
3931 if (SvFLAGS(sv) & SVf_BREAK)
3933 if (PL_in_clean_all) /* All is fair */
3935 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3936 /* make sure SvREFCNT(sv)==0 happens very seldom */
3937 SvREFCNT(sv) = (~(U32)0)/2;
3940 if (ckWARN_d(WARN_INTERNAL))
3941 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3944 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3945 if (!refcount_is_zero)
3949 if (ckWARN_d(WARN_DEBUGGING))
3950 Perl_warner(aTHX_ WARN_DEBUGGING,
3951 "Attempt to free temp prematurely: SV 0x%"UVxf,
3956 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3957 /* make sure SvREFCNT(sv)==0 happens very seldom */
3958 SvREFCNT(sv) = (~(U32)0)/2;
3969 Returns the length of the string in the SV. See also C<SvCUR>.
3975 Perl_sv_len(pTHX_ register SV *sv)
3984 len = mg_length(sv);
3986 junk = SvPV(sv, len);
3991 =for apidoc sv_len_utf8
3993 Returns the number of characters in the string in an SV, counting wide
3994 UTF8 bytes as a single character.
4000 Perl_sv_len_utf8(pTHX_ register SV *sv)
4007 return mg_length(sv);
4012 U8 *s = (U8*)SvPV(sv, len);
4014 return Perl_utf8_length(aTHX_ s, s + len);
4019 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4024 I32 uoffset = *offsetp;
4030 start = s = (U8*)SvPV(sv, len);
4032 while (s < send && uoffset--)
4036 *offsetp = s - start;
4040 while (s < send && ulen--)
4050 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4059 s = (U8*)SvPV(sv, len);
4061 Perl_croak(aTHX_ "panic: bad byte offset");
4062 send = s + *offsetp;
4070 if (ckWARN_d(WARN_UTF8))
4071 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4081 Returns a boolean indicating whether the strings in the two SVs are
4088 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4095 bool pv1tmp = FALSE;
4096 bool pv2tmp = FALSE;
4103 pv1 = SvPV(sv1, cur1);
4110 pv2 = SvPV(sv2, cur2);
4112 /* do not utf8ize the comparands as a side-effect */
4113 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4115 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4119 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4125 eq = memEQ(pv1, pv2, cur1);
4138 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4139 string in C<sv1> is less than, equal to, or greater than the string in
4146 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4151 bool pv1tmp = FALSE;
4152 bool pv2tmp = FALSE;
4159 pv1 = SvPV(sv1, cur1);
4166 pv2 = SvPV(sv2, cur2);
4168 /* do not utf8ize the comparands as a side-effect */
4169 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4171 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4175 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4181 cmp = cur2 ? -1 : 0;
4185 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4188 cmp = retval < 0 ? -1 : 1;
4189 } else if (cur1 == cur2) {
4192 cmp = cur1 < cur2 ? -1 : 1;
4205 =for apidoc sv_cmp_locale
4207 Compares the strings in two SVs in a locale-aware manner. See
4214 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4216 #ifdef USE_LOCALE_COLLATE
4222 if (PL_collation_standard)
4226 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4228 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4230 if (!pv1 || !len1) {
4241 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4244 return retval < 0 ? -1 : 1;
4247 * When the result of collation is equality, that doesn't mean
4248 * that there are no differences -- some locales exclude some
4249 * characters from consideration. So to avoid false equalities,
4250 * we use the raw string as a tiebreaker.
4256 #endif /* USE_LOCALE_COLLATE */
4258 return sv_cmp(sv1, sv2);
4261 #ifdef USE_LOCALE_COLLATE
4263 * Any scalar variable may carry an 'o' magic that contains the
4264 * scalar data of the variable transformed to such a format that
4265 * a normal memory comparison can be used to compare the data
4266 * according to the locale settings.
4269 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4273 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4274 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4279 Safefree(mg->mg_ptr);
4281 if ((xf = mem_collxfrm(s, len, &xlen))) {
4282 if (SvREADONLY(sv)) {
4285 return xf + sizeof(PL_collation_ix);
4288 sv_magic(sv, 0, 'o', 0, 0);
4289 mg = mg_find(sv, 'o');
4302 if (mg && mg->mg_ptr) {
4304 return mg->mg_ptr + sizeof(PL_collation_ix);
4312 #endif /* USE_LOCALE_COLLATE */
4317 Get a line from the filehandle and store it into the SV, optionally
4318 appending to the currently-stored string.
4324 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4329 register STDCHAR rslast;
4330 register STDCHAR *bp;
4334 SV_CHECK_THINKFIRST(sv);
4335 (void)SvUPGRADE(sv, SVt_PV);
4339 if (RsSNARF(PL_rs)) {
4343 else if (RsRECORD(PL_rs)) {
4344 I32 recsize, bytesread;
4347 /* Grab the size of the record we're getting */
4348 recsize = SvIV(SvRV(PL_rs));
4349 (void)SvPOK_only(sv); /* Validate pointer */
4350 buffer = SvGROW(sv, recsize + 1);
4353 /* VMS wants read instead of fread, because fread doesn't respect */
4354 /* RMS record boundaries. This is not necessarily a good thing to be */
4355 /* doing, but we've got no other real choice */
4356 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4358 bytesread = PerlIO_read(fp, buffer, recsize);
4360 SvCUR_set(sv, bytesread);
4361 buffer[bytesread] = '\0';
4362 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4364 else if (RsPARA(PL_rs)) {
4369 rsptr = SvPV(PL_rs, rslen);
4370 rslast = rslen ? rsptr[rslen - 1] : '\0';
4372 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4373 do { /* to make sure file boundaries work right */
4376 i = PerlIO_getc(fp);
4380 PerlIO_ungetc(fp,i);
4386 /* See if we know enough about I/O mechanism to cheat it ! */
4388 /* This used to be #ifdef test - it is made run-time test for ease
4389 of abstracting out stdio interface. One call should be cheap
4390 enough here - and may even be a macro allowing compile
4394 if (PerlIO_fast_gets(fp)) {
4397 * We're going to steal some values from the stdio struct
4398 * and put EVERYTHING in the innermost loop into registers.
4400 register STDCHAR *ptr;
4404 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4405 /* An ungetc()d char is handled separately from the regular
4406 * buffer, so we getc() it back out and stuff it in the buffer.
4408 i = PerlIO_getc(fp);
4409 if (i == EOF) return 0;
4410 *(--((*fp)->_ptr)) = (unsigned char) i;
4414 /* Here is some breathtakingly efficient cheating */
4416 cnt = PerlIO_get_cnt(fp); /* get count into register */
4417 (void)SvPOK_only(sv); /* validate pointer */
4418 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4419 if (cnt > 80 && SvLEN(sv) > append) {
4420 shortbuffered = cnt - SvLEN(sv) + append + 1;
4421 cnt -= shortbuffered;
4425 /* remember that cnt can be negative */
4426 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4431 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4432 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4433 DEBUG_P(PerlIO_printf(Perl_debug_log,
4434 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4435 DEBUG_P(PerlIO_printf(Perl_debug_log,
4436 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4437 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4438 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4443 while (cnt > 0) { /* this | eat */
4445 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4446 goto thats_all_folks; /* screams | sed :-) */
4450 Copy(ptr, bp, cnt, char); /* this | eat */
4451 bp += cnt; /* screams | dust */
4452 ptr += cnt; /* louder | sed :-) */
4457 if (shortbuffered) { /* oh well, must extend */
4458 cnt = shortbuffered;
4460 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4462 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4463 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4467 DEBUG_P(PerlIO_printf(Perl_debug_log,
4468 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4469 PTR2UV(ptr),(long)cnt));
4470 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4471 DEBUG_P(PerlIO_printf(Perl_debug_log,
4472 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4473 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4474 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4475 /* This used to call 'filbuf' in stdio form, but as that behaves like
4476 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4477 another abstraction. */
4478 i = PerlIO_getc(fp); /* get more characters */
4479 DEBUG_P(PerlIO_printf(Perl_debug_log,
4480 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4481 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4482 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4483 cnt = PerlIO_get_cnt(fp);
4484 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4485 DEBUG_P(PerlIO_printf(Perl_debug_log,
4486 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4488 if (i == EOF) /* all done for ever? */
4489 goto thats_really_all_folks;
4491 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4493 SvGROW(sv, bpx + cnt + 2);
4494 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4496 *bp++ = i; /* store character from PerlIO_getc */
4498 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4499 goto thats_all_folks;
4503 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4504 memNE((char*)bp - rslen, rsptr, rslen))
4505 goto screamer; /* go back to the fray */
4506 thats_really_all_folks:
4508 cnt += shortbuffered;
4509 DEBUG_P(PerlIO_printf(Perl_debug_log,
4510 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4511 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4512 DEBUG_P(PerlIO_printf(Perl_debug_log,
4513 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4514 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4515 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4517 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4518 DEBUG_P(PerlIO_printf(Perl_debug_log,
4519 "Screamer: done, len=%ld, string=|%.*s|\n",
4520 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4525 /*The big, slow, and stupid way */
4528 /* Need to work around EPOC SDK features */
4529 /* On WINS: MS VC5 generates calls to _chkstk, */
4530 /* if a `large' stack frame is allocated */
4531 /* gcc on MARM does not generate calls like these */
4537 register STDCHAR *bpe = buf + sizeof(buf);
4539 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4540 ; /* keep reading */
4544 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4545 /* Accomodate broken VAXC compiler, which applies U8 cast to
4546 * both args of ?: operator, causing EOF to change into 255
4548 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4552 sv_catpvn(sv, (char *) buf, cnt);
4554 sv_setpvn(sv, (char *) buf, cnt);
4556 if (i != EOF && /* joy */
4558 SvCUR(sv) < rslen ||
4559 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4563 * If we're reading from a TTY and we get a short read,
4564 * indicating that the user hit his EOF character, we need
4565 * to notice it now, because if we try to read from the TTY
4566 * again, the EOF condition will disappear.
4568 * The comparison of cnt to sizeof(buf) is an optimization
4569 * that prevents unnecessary calls to feof().
4573 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4578 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4579 while (i != EOF) { /* to make sure file boundaries work right */
4580 i = PerlIO_getc(fp);
4582 PerlIO_ungetc(fp,i);
4588 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4595 Auto-increment of the value in the SV.
4601 Perl_sv_inc(pTHX_ register SV *sv)
4610 if (SvTHINKFIRST(sv)) {
4611 if (SvREADONLY(sv)) {
4613 if (PL_curcop != &PL_compiling)
4614 Perl_croak(aTHX_ PL_no_modify);
4618 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4620 i = PTR2IV(SvRV(sv));
4625 flags = SvFLAGS(sv);
4626 if (flags & SVp_NOK) {
4627 (void)SvNOK_only(sv);
4631 if (flags & SVp_IOK) {
4633 if (SvUVX(sv) == UV_MAX)
4634 sv_setnv(sv, (NV)UV_MAX + 1.0);
4636 (void)SvIOK_only_UV(sv);
4639 if (SvIVX(sv) == IV_MAX)
4640 sv_setnv(sv, (NV)IV_MAX + 1.0);
4642 (void)SvIOK_only(sv);
4648 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4649 if ((flags & SVTYPEMASK) < SVt_PVNV)
4650 sv_upgrade(sv, SVt_NV);
4652 (void)SvNOK_only(sv);
4656 while (isALPHA(*d)) d++;
4657 while (isDIGIT(*d)) d++;
4659 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4663 while (d >= SvPVX(sv)) {
4671 /* MKS: The original code here died if letters weren't consecutive.
4672 * at least it didn't have to worry about non-C locales. The
4673 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4674 * arranged in order (although not consecutively) and that only
4675 * [A-Za-z] are accepted by isALPHA in the C locale.
4677 if (*d != 'z' && *d != 'Z') {
4678 do { ++*d; } while (!isALPHA(*d));
4681 *(d--) -= 'z' - 'a';
4686 *(d--) -= 'z' - 'a' + 1;
4690 /* oh,oh, the number grew */
4691 SvGROW(sv, SvCUR(sv) + 2);
4693 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4704 Auto-decrement of the value in the SV.
4710 Perl_sv_dec(pTHX_ register SV *sv)
4718 if (SvTHINKFIRST(sv)) {
4719 if (SvREADONLY(sv)) {
4721 if (PL_curcop != &PL_compiling)
4722 Perl_croak(aTHX_ PL_no_modify);
4726 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4728 i = PTR2IV(SvRV(sv));
4733 flags = SvFLAGS(sv);
4734 if (flags & SVp_NOK) {
4736 (void)SvNOK_only(sv);
4739 if (flags & SVp_IOK) {
4741 if (SvUVX(sv) == 0) {
4742 (void)SvIOK_only(sv);
4746 (void)SvIOK_only_UV(sv);
4750 if (SvIVX(sv) == IV_MIN)
4751 sv_setnv(sv, (NV)IV_MIN - 1.0);
4753 (void)SvIOK_only(sv);
4759 if (!(flags & SVp_POK)) {
4760 if ((flags & SVTYPEMASK) < SVt_PVNV)
4761 sv_upgrade(sv, SVt_NV);
4763 (void)SvNOK_only(sv);
4766 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4770 =for apidoc sv_mortalcopy
4772 Creates a new SV which is a copy of the original SV. The new SV is marked
4778 /* Make a string that will exist for the duration of the expression
4779 * evaluation. Actually, it may have to last longer than that, but
4780 * hopefully we won't free it until it has been assigned to a
4781 * permanent location. */
4784 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4790 sv_setsv(sv,oldstr);
4792 PL_tmps_stack[++PL_tmps_ix] = sv;
4798 =for apidoc sv_newmortal
4800 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4806 Perl_sv_newmortal(pTHX)
4812 SvFLAGS(sv) = SVs_TEMP;
4814 PL_tmps_stack[++PL_tmps_ix] = sv;
4819 =for apidoc sv_2mortal
4821 Marks an SV as mortal. The SV will be destroyed when the current context
4827 /* same thing without the copying */
4830 Perl_sv_2mortal(pTHX_ register SV *sv)
4835 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4838 PL_tmps_stack[++PL_tmps_ix] = sv;
4846 Creates a new SV and copies a string into it. The reference count for the
4847 SV is set to 1. If C<len> is zero, Perl will compute the length using
4848 strlen(). For efficiency, consider using C<newSVpvn> instead.
4854 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4861 sv_setpvn(sv,s,len);
4866 =for apidoc newSVpvn
4868 Creates a new SV and copies a string into it. The reference count for the
4869 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4870 string. You are responsible for ensuring that the source string is at least
4877 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4882 sv_setpvn(sv,s,len);
4887 =for apidoc newSVpvn_share
4889 Creates a new SV and populates it with a string from
4890 the string table. Turns on READONLY and FAKE.
4891 The idea here is that as string table is used for shared hash
4892 keys these strings will have SvPVX == HeKEY and hash lookup
4893 will avoid string compare.
4899 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4903 PERL_HASH(hash, src, len);
4905 sv_upgrade(sv, SVt_PVIV);
4906 SvPVX(sv) = sharepvn(src, len, hash);
4916 #if defined(PERL_IMPLICIT_CONTEXT)
4918 Perl_newSVpvf_nocontext(const char* pat, ...)
4923 va_start(args, pat);
4924 sv = vnewSVpvf(pat, &args);
4931 =for apidoc newSVpvf
4933 Creates a new SV an initialize it with the string formatted like
4940 Perl_newSVpvf(pTHX_ const char* pat, ...)
4944 va_start(args, pat);
4945 sv = vnewSVpvf(pat, &args);
4951 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4955 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4962 Creates a new SV and copies a floating point value into it.
4963 The reference count for the SV is set to 1.
4969 Perl_newSVnv(pTHX_ NV n)
4981 Creates a new SV and copies an integer into it. The reference count for the
4988 Perl_newSViv(pTHX_ IV i)
5000 Creates a new SV and copies an unsigned integer into it.
5001 The reference count for the SV is set to 1.
5007 Perl_newSVuv(pTHX_ UV u)
5017 =for apidoc newRV_noinc
5019 Creates an RV wrapper for an SV. The reference count for the original
5020 SV is B<not> incremented.
5026 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5032 sv_upgrade(sv, SVt_RV);
5039 /* newRV_inc is #defined to newRV in sv.h */
5041 Perl_newRV(pTHX_ SV *tmpRef)
5043 return newRV_noinc(SvREFCNT_inc(tmpRef));
5049 Creates a new SV which is an exact duplicate of the original SV.
5054 /* make an exact duplicate of old */
5057 Perl_newSVsv(pTHX_ register SV *old)
5064 if (SvTYPE(old) == SVTYPEMASK) {
5065 if (ckWARN_d(WARN_INTERNAL))
5066 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5081 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5089 char todo[PERL_UCHAR_MAX+1];
5094 if (!*s) { /* reset ?? searches */
5095 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5096 pm->op_pmdynflags &= ~PMdf_USED;
5101 /* reset variables */
5103 if (!HvARRAY(stash))
5106 Zero(todo, 256, char);
5108 i = (unsigned char)*s;
5112 max = (unsigned char)*s++;
5113 for ( ; i <= max; i++) {
5116 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5117 for (entry = HvARRAY(stash)[i];
5119 entry = HeNEXT(entry))
5121 if (!todo[(U8)*HeKEY(entry)])
5123 gv = (GV*)HeVAL(entry);
5125 if (SvTHINKFIRST(sv)) {
5126 if (!SvREADONLY(sv) && SvROK(sv))
5131 if (SvTYPE(sv) >= SVt_PV) {
5133 if (SvPVX(sv) != Nullch)
5140 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5142 #ifdef USE_ENVIRON_ARRAY
5144 environ[0] = Nullch;
5153 Perl_sv_2io(pTHX_ SV *sv)
5159 switch (SvTYPE(sv)) {
5167 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5171 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5173 return sv_2io(SvRV(sv));
5174 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5180 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5187 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5194 return *gvp = Nullgv, Nullcv;
5195 switch (SvTYPE(sv)) {
5215 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5216 tryAMAGICunDEREF(to_cv);
5219 if (SvTYPE(sv) == SVt_PVCV) {
5228 Perl_croak(aTHX_ "Not a subroutine reference");
5233 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5239 if (lref && !GvCVu(gv)) {
5242 tmpsv = NEWSV(704,0);
5243 gv_efullname3(tmpsv, gv, Nullch);
5244 /* XXX this is probably not what they think they're getting.
5245 * It has the same effect as "sub name;", i.e. just a forward
5247 newSUB(start_subparse(FALSE, 0),
5248 newSVOP(OP_CONST, 0, tmpsv),
5253 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5262 Returns true if the SV has a true value by Perl's rules.
5268 Perl_sv_true(pTHX_ register SV *sv)
5275 if ((tXpv = (XPV*)SvANY(sv)) &&
5276 (tXpv->xpv_cur > 1 ||
5277 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5284 return SvIVX(sv) != 0;
5287 return SvNVX(sv) != 0.0;
5289 return sv_2bool(sv);
5295 Perl_sv_iv(pTHX_ register SV *sv)
5299 return (IV)SvUVX(sv);
5306 Perl_sv_uv(pTHX_ register SV *sv)
5311 return (UV)SvIVX(sv);
5317 Perl_sv_nv(pTHX_ register SV *sv)
5325 Perl_sv_pv(pTHX_ SV *sv)
5332 return sv_2pv(sv, &n_a);
5336 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5342 return sv_2pv(sv, lp);
5346 =for apidoc sv_pvn_force
5348 Get a sensible string out of the SV somehow.
5354 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5358 if (SvTHINKFIRST(sv) && !SvROK(sv))
5359 sv_force_normal(sv);
5365 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5367 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5368 PL_op_name[PL_op->op_type]);
5372 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5377 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5378 SvGROW(sv, len + 1);
5379 Move(s,SvPVX(sv),len,char);
5384 SvPOK_on(sv); /* validate pointer */
5386 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5387 PTR2UV(sv),SvPVX(sv)));
5394 Perl_sv_pvbyte(pTHX_ SV *sv)
5400 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5402 return sv_pvn(sv,lp);
5406 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5408 return sv_pvn_force(sv,lp);
5412 Perl_sv_pvutf8(pTHX_ SV *sv)
5414 sv_utf8_upgrade(sv);
5419 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5421 sv_utf8_upgrade(sv);
5422 return sv_pvn(sv,lp);
5426 =for apidoc sv_pvutf8n_force
5428 Get a sensible UTF8-encoded string out of the SV somehow. See
5435 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5437 sv_utf8_upgrade(sv);
5438 return sv_pvn_force(sv,lp);
5442 =for apidoc sv_reftype
5444 Returns a string describing what the SV is a reference to.
5450 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5452 if (ob && SvOBJECT(sv))
5453 return HvNAME(SvSTASH(sv));
5455 switch (SvTYPE(sv)) {
5469 case SVt_PVLV: return "LVALUE";
5470 case SVt_PVAV: return "ARRAY";
5471 case SVt_PVHV: return "HASH";
5472 case SVt_PVCV: return "CODE";
5473 case SVt_PVGV: return "GLOB";
5474 case SVt_PVFM: return "FORMAT";
5475 case SVt_PVIO: return "IO";
5476 default: return "UNKNOWN";
5482 =for apidoc sv_isobject
5484 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5485 object. If the SV is not an RV, or if the object is not blessed, then this
5492 Perl_sv_isobject(pTHX_ SV *sv)
5509 Returns a boolean indicating whether the SV is blessed into the specified
5510 class. This does not check for subtypes; use C<sv_derived_from> to verify
5511 an inheritance relationship.
5517 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5529 return strEQ(HvNAME(SvSTASH(sv)), name);
5535 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5536 it will be upgraded to one. If C<classname> is non-null then the new SV will
5537 be blessed in the specified package. The new SV is returned and its
5538 reference count is 1.
5544 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5551 SV_CHECK_THINKFIRST(rv);
5554 if (SvTYPE(rv) >= SVt_PVMG) {
5555 U32 refcnt = SvREFCNT(rv);
5559 SvREFCNT(rv) = refcnt;
5562 if (SvTYPE(rv) < SVt_RV)
5563 sv_upgrade(rv, SVt_RV);
5564 else if (SvTYPE(rv) > SVt_RV) {
5565 (void)SvOOK_off(rv);
5566 if (SvPVX(rv) && SvLEN(rv))
5567 Safefree(SvPVX(rv));
5577 HV* stash = gv_stashpv(classname, TRUE);
5578 (void)sv_bless(rv, stash);
5584 =for apidoc sv_setref_pv
5586 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5587 argument will be upgraded to an RV. That RV will be modified to point to
5588 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5589 into the SV. The C<classname> argument indicates the package for the
5590 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5591 will be returned and will have a reference count of 1.
5593 Do not use with other Perl types such as HV, AV, SV, CV, because those
5594 objects will become corrupted by the pointer copy process.
5596 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5602 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5605 sv_setsv(rv, &PL_sv_undef);
5609 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5614 =for apidoc sv_setref_iv
5616 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5617 argument will be upgraded to an RV. That RV will be modified to point to
5618 the new SV. The C<classname> argument indicates the package for the
5619 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5620 will be returned and will have a reference count of 1.
5626 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5628 sv_setiv(newSVrv(rv,classname), iv);
5633 =for apidoc sv_setref_nv
5635 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5636 argument will be upgraded to an RV. That RV will be modified to point to
5637 the new SV. The C<classname> argument indicates the package for the
5638 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5639 will be returned and will have a reference count of 1.
5645 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5647 sv_setnv(newSVrv(rv,classname), nv);
5652 =for apidoc sv_setref_pvn
5654 Copies a string into a new SV, optionally blessing the SV. The length of the
5655 string must be specified with C<n>. The C<rv> argument will be upgraded to
5656 an RV. That RV will be modified to point to the new SV. The C<classname>
5657 argument indicates the package for the blessing. Set C<classname> to
5658 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5659 a reference count of 1.
5661 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5667 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5669 sv_setpvn(newSVrv(rv,classname), pv, n);
5674 =for apidoc sv_bless
5676 Blesses an SV into a specified package. The SV must be an RV. The package
5677 must be designated by its stash (see C<gv_stashpv()>). The reference count
5678 of the SV is unaffected.
5684 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5689 Perl_croak(aTHX_ "Can't bless non-reference value");
5691 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5692 if (SvREADONLY(tmpRef))
5693 Perl_croak(aTHX_ PL_no_modify);
5694 if (SvOBJECT(tmpRef)) {
5695 if (SvTYPE(tmpRef) != SVt_PVIO)
5697 SvREFCNT_dec(SvSTASH(tmpRef));
5700 SvOBJECT_on(tmpRef);
5701 if (SvTYPE(tmpRef) != SVt_PVIO)
5703 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5704 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5715 S_sv_unglob(pTHX_ SV *sv)
5719 assert(SvTYPE(sv) == SVt_PVGV);
5724 SvREFCNT_dec(GvSTASH(sv));
5725 GvSTASH(sv) = Nullhv;
5727 sv_unmagic(sv, '*');
5728 Safefree(GvNAME(sv));
5731 /* need to keep SvANY(sv) in the right arena */
5732 xpvmg = new_XPVMG();
5733 StructCopy(SvANY(sv), xpvmg, XPVMG);
5734 del_XPVGV(SvANY(sv));
5737 SvFLAGS(sv) &= ~SVTYPEMASK;
5738 SvFLAGS(sv) |= SVt_PVMG;
5742 =for apidoc sv_unref
5744 Unsets the RV status of the SV, and decrements the reference count of
5745 whatever was being referenced by the RV. This can almost be thought of
5746 as a reversal of C<newSVrv>. See C<SvROK_off>.
5752 Perl_sv_unref(pTHX_ SV *sv)
5756 if (SvWEAKREF(sv)) {
5764 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5767 sv_2mortal(rv); /* Schedule for freeing later */
5771 Perl_sv_taint(pTHX_ SV *sv)
5773 sv_magic((sv), Nullsv, 't', Nullch, 0);
5777 Perl_sv_untaint(pTHX_ SV *sv)
5779 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5780 MAGIC *mg = mg_find(sv, 't');
5787 Perl_sv_tainted(pTHX_ SV *sv)
5789 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5790 MAGIC *mg = mg_find(sv, 't');
5791 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5798 =for apidoc sv_setpviv
5800 Copies an integer into the given SV, also updating its string value.
5801 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5807 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5809 char buf[TYPE_CHARS(UV)];
5811 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5813 sv_setpvn(sv, ptr, ebuf - ptr);
5818 =for apidoc sv_setpviv_mg
5820 Like C<sv_setpviv>, but also handles 'set' magic.
5826 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5828 char buf[TYPE_CHARS(UV)];
5830 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5832 sv_setpvn(sv, ptr, ebuf - ptr);
5836 #if defined(PERL_IMPLICIT_CONTEXT)
5838 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5842 va_start(args, pat);
5843 sv_vsetpvf(sv, pat, &args);
5849 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5853 va_start(args, pat);
5854 sv_vsetpvf_mg(sv, pat, &args);
5860 =for apidoc sv_setpvf
5862 Processes its arguments like C<sprintf> and sets an SV to the formatted
5863 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5869 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5872 va_start(args, pat);
5873 sv_vsetpvf(sv, pat, &args);
5878 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5880 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5884 =for apidoc sv_setpvf_mg
5886 Like C<sv_setpvf>, but also handles 'set' magic.
5892 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5895 va_start(args, pat);
5896 sv_vsetpvf_mg(sv, pat, &args);
5901 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5903 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5907 #if defined(PERL_IMPLICIT_CONTEXT)
5909 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5913 va_start(args, pat);
5914 sv_vcatpvf(sv, pat, &args);
5919 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5923 va_start(args, pat);
5924 sv_vcatpvf_mg(sv, pat, &args);
5930 =for apidoc sv_catpvf
5932 Processes its arguments like C<sprintf> and appends the formatted output
5933 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5934 typically be called after calling this function to handle 'set' magic.
5940 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5943 va_start(args, pat);
5944 sv_vcatpvf(sv, pat, &args);
5949 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5951 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5955 =for apidoc sv_catpvf_mg
5957 Like C<sv_catpvf>, but also handles 'set' magic.
5963 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5966 va_start(args, pat);
5967 sv_vcatpvf_mg(sv, pat, &args);
5972 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5974 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5979 =for apidoc sv_vsetpvfn
5981 Works like C<vcatpvfn> but copies the text into the SV instead of
5988 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5990 sv_setpvn(sv, "", 0);
5991 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5995 =for apidoc sv_vcatpvfn
5997 Processes its arguments like C<vsprintf> and appends the formatted output
5998 to an SV. Uses an array of SVs if the C style variable argument list is
5999 missing (NULL). When running with taint checks enabled, indicates via
6000 C<maybe_tainted> if results are untrustworthy (often due to the use of
6007 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6015 static char nullstr[] = "(null)";
6018 /* no matter what, this is a string now */
6019 (void)SvPV_force(sv, origlen);
6021 /* special-case "", "%s", and "%_" */
6024 if (patlen == 2 && pat[0] == '%') {
6028 char *s = va_arg(*args, char*);
6029 sv_catpv(sv, s ? s : nullstr);
6031 else if (svix < svmax) {
6032 sv_catsv(sv, *svargs);
6033 if (DO_UTF8(*svargs))
6039 argsv = va_arg(*args, SV*);
6040 sv_catsv(sv, argsv);
6045 /* See comment on '_' below */
6050 patend = (char*)pat + patlen;
6051 for (p = (char*)pat; p < patend; p = q) {
6054 bool vectorize = FALSE;
6061 bool has_precis = FALSE;
6063 bool is_utf = FALSE;
6066 U8 utf8buf[UTF8_MAXLEN];
6067 STRLEN esignlen = 0;
6069 char *eptr = Nullch;
6071 /* Times 4: a decimal digit takes more than 3 binary digits.
6072 * NV_DIG: mantissa takes than many decimal digits.
6073 * Plus 32: Playing safe. */
6074 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6075 /* large enough for "%#.#f" --chip */
6076 /* what about long double NVs? --jhi */
6079 U8 *vecstr = Null(U8*);
6091 STRLEN dotstrlen = 1;
6092 I32 epix = 0; /* explicit parameter index */
6093 I32 ewix = 0; /* explicit width index */
6094 bool asterisk = FALSE;
6096 for (q = p; q < patend && *q != '%'; ++q) ;
6098 sv_catpvn(sv, p, q - p);
6127 case '*': /* printf("%*vX",":",$ipv6addr) */
6132 vecsv = va_arg(*args, SV*);
6133 else if (svix < svmax)
6134 vecsv = svargs[svix++];
6137 dotstr = SvPVx(vecsv,dotstrlen);
6165 case '1': case '2': case '3':
6166 case '4': case '5': case '6':
6167 case '7': case '8': case '9':
6170 width = width * 10 + (*q++ - '0');
6172 if (asterisk && ewix == 0) {
6177 } else if (epix == 0) {
6189 i = va_arg(*args, int);
6191 i = (ewix ? ewix <= svmax : svix < svmax) ?
6192 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6194 width = (i < 0) ? -i : i;
6203 i = va_arg(*args, int);
6205 i = (ewix ? ewix <= svmax : svix < svmax)
6206 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6207 precis = (i < 0) ? 0 : i;
6213 precis = precis * 10 + (*q++ - '0');
6220 vecsv = va_arg(*args, SV*);
6221 vecstr = (U8*)SvPVx(vecsv,veclen);
6222 utf = DO_UTF8(vecsv);
6224 else if (epix ? epix <= svmax : svix < svmax) {
6225 vecsv = svargs[epix ? epix-1 : svix++];
6226 vecstr = (U8*)SvPVx(vecsv,veclen);
6227 utf = DO_UTF8(vecsv);
6238 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6249 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6250 if (*(q + 1) == 'l') { /* lld, llf */
6277 uv = va_arg(*args, int);
6279 uv = (epix ? epix <= svmax : svix < svmax) ?
6280 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6281 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6282 eptr = (char*)utf8buf;
6283 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6295 eptr = va_arg(*args, char*);
6297 #ifdef MACOS_TRADITIONAL
6298 /* On MacOS, %#s format is used for Pascal strings */
6303 elen = strlen(eptr);
6306 elen = sizeof nullstr - 1;
6309 else if (epix ? epix <= svmax : svix < svmax) {
6310 argsv = svargs[epix ? epix-1 : svix++];
6311 eptr = SvPVx(argsv, elen);
6312 if (DO_UTF8(argsv)) {
6313 if (has_precis && precis < elen) {
6315 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6318 if (width) { /* fudge width (can't fudge elen) */
6319 width += elen - sv_len_utf8(argsv);
6328 * The "%_" hack might have to be changed someday,
6329 * if ISO or ANSI decide to use '_' for something.
6330 * So we keep it hidden from users' code.
6334 argsv = va_arg(*args,SV*);
6335 eptr = SvPVx(argsv, elen);
6341 if (has_precis && elen > precis)
6351 uv = PTR2UV(va_arg(*args, void*));
6353 uv = (epix ? epix <= svmax : svix < svmax) ?
6354 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6374 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6384 case 'h': iv = (short)va_arg(*args, int); break;
6385 default: iv = va_arg(*args, int); break;
6386 case 'l': iv = va_arg(*args, long); break;
6387 case 'V': iv = va_arg(*args, IV); break;
6389 case 'q': iv = va_arg(*args, Quad_t); break;
6394 iv = (epix ? epix <= svmax : svix < svmax) ?
6395 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6397 case 'h': iv = (short)iv; break;
6399 case 'l': iv = (long)iv; break;
6402 case 'q': iv = (Quad_t)iv; break;
6409 esignbuf[esignlen++] = plus;
6413 esignbuf[esignlen++] = '-';
6457 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6467 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6468 default: uv = va_arg(*args, unsigned); break;
6469 case 'l': uv = va_arg(*args, unsigned long); break;
6470 case 'V': uv = va_arg(*args, UV); break;
6472 case 'q': uv = va_arg(*args, Quad_t); break;
6477 uv = (epix ? epix <= svmax : svix < svmax) ?
6478 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6480 case 'h': uv = (unsigned short)uv; break;
6482 case 'l': uv = (unsigned long)uv; break;
6485 case 'q': uv = (Quad_t)uv; break;
6491 eptr = ebuf + sizeof ebuf;
6497 p = (char*)((c == 'X')
6498 ? "0123456789ABCDEF" : "0123456789abcdef");
6504 esignbuf[esignlen++] = '0';
6505 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6511 *--eptr = '0' + dig;
6513 if (alt && *eptr != '0')
6519 *--eptr = '0' + dig;
6522 esignbuf[esignlen++] = '0';
6523 esignbuf[esignlen++] = 'b';
6526 default: /* it had better be ten or less */
6527 #if defined(PERL_Y2KWARN)
6528 if (ckWARN(WARN_Y2K)) {
6530 char *s = SvPV(sv,n);
6531 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6532 && (n == 2 || !isDIGIT(s[n-3])))
6534 Perl_warner(aTHX_ WARN_Y2K,
6535 "Possible Y2K bug: %%%c %s",
6536 c, "format string following '19'");
6542 *--eptr = '0' + dig;
6543 } while (uv /= base);
6546 elen = (ebuf + sizeof ebuf) - eptr;
6549 zeros = precis - elen;
6550 else if (precis == 0 && elen == 1 && *eptr == '0')
6555 /* FLOATING POINT */
6558 c = 'f'; /* maybe %F isn't supported here */
6564 /* This is evil, but floating point is even more evil */
6568 nv = va_arg(*args, NV);
6570 nv = (epix ? epix <= svmax : svix < svmax) ?
6571 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6574 if (c != 'e' && c != 'E') {
6576 (void)Perl_frexp(nv, &i);
6577 if (i == PERL_INT_MIN)
6578 Perl_die(aTHX_ "panic: frexp");
6580 need = BIT_DIGITS(i);
6582 need += has_precis ? precis : 6; /* known default */
6586 need += 20; /* fudge factor */
6587 if (PL_efloatsize < need) {
6588 Safefree(PL_efloatbuf);
6589 PL_efloatsize = need + 20; /* more fudge */
6590 New(906, PL_efloatbuf, PL_efloatsize, char);
6591 PL_efloatbuf[0] = '\0';
6594 eptr = ebuf + sizeof ebuf;
6597 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6599 /* Copy the one or more characters in a long double
6600 * format before the 'base' ([efgEFG]) character to
6601 * the format string. */
6602 static char const prifldbl[] = PERL_PRIfldbl;
6603 char const *p = prifldbl + sizeof(prifldbl) - 3;
6604 while (p >= prifldbl) { *--eptr = *p--; }
6609 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6614 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6626 /* No taint. Otherwise we are in the strange situation
6627 * where printf() taints but print($float) doesn't.
6629 (void)sprintf(PL_efloatbuf, eptr, nv);
6631 eptr = PL_efloatbuf;
6632 elen = strlen(PL_efloatbuf);
6639 i = SvCUR(sv) - origlen;
6642 case 'h': *(va_arg(*args, short*)) = i; break;
6643 default: *(va_arg(*args, int*)) = i; break;
6644 case 'l': *(va_arg(*args, long*)) = i; break;
6645 case 'V': *(va_arg(*args, IV*)) = i; break;
6647 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6651 else if (epix ? epix <= svmax : svix < svmax)
6652 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6653 continue; /* not "break" */
6660 if (!args && ckWARN(WARN_PRINTF) &&
6661 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6662 SV *msg = sv_newmortal();
6663 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6664 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6667 Perl_sv_catpvf(aTHX_ msg,
6668 "\"%%%c\"", c & 0xFF);
6670 Perl_sv_catpvf(aTHX_ msg,
6671 "\"%%\\%03"UVof"\"",
6674 sv_catpv(msg, "end of string");
6675 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6678 /* output mangled stuff ... */
6684 /* ... right here, because formatting flags should not apply */
6685 SvGROW(sv, SvCUR(sv) + elen + 1);
6687 memcpy(p, eptr, elen);
6690 SvCUR(sv) = p - SvPVX(sv);
6691 continue; /* not "break" */
6694 have = esignlen + zeros + elen;
6695 need = (have > width ? have : width);
6698 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6700 if (esignlen && fill == '0') {
6701 for (i = 0; i < esignlen; i++)
6705 memset(p, fill, gap);
6708 if (esignlen && fill != '0') {
6709 for (i = 0; i < esignlen; i++)
6713 for (i = zeros; i; i--)
6717 memcpy(p, eptr, elen);
6721 memset(p, ' ', gap);
6726 memcpy(p, dotstr, dotstrlen);
6730 vectorize = FALSE; /* done iterating over vecstr */
6735 SvCUR(sv) = p - SvPVX(sv);
6743 #if defined(USE_ITHREADS)
6745 #if defined(USE_THREADS)
6746 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6749 #ifndef GpREFCNT_inc
6750 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6754 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6755 #define av_dup(s) (AV*)sv_dup((SV*)s)
6756 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6757 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6758 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6759 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6760 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6761 #define io_dup(s) (IO*)sv_dup((SV*)s)
6762 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6763 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6764 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6765 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6766 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6769 Perl_re_dup(pTHX_ REGEXP *r)
6771 /* XXX fix when pmop->op_pmregexp becomes shared */
6772 return ReREFCNT_inc(r);
6776 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6780 return (PerlIO*)NULL;
6782 /* look for it in the table first */
6783 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6787 /* create anew and remember what it is */
6788 ret = PerlIO_fdupopen(fp);
6789 ptr_table_store(PL_ptr_table, fp, ret);
6794 Perl_dirp_dup(pTHX_ DIR *dp)
6803 Perl_gp_dup(pTHX_ GP *gp)
6808 /* look for it in the table first */
6809 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6813 /* create anew and remember what it is */
6814 Newz(0, ret, 1, GP);
6815 ptr_table_store(PL_ptr_table, gp, ret);
6818 ret->gp_refcnt = 0; /* must be before any other dups! */
6819 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6820 ret->gp_io = io_dup_inc(gp->gp_io);
6821 ret->gp_form = cv_dup_inc(gp->gp_form);
6822 ret->gp_av = av_dup_inc(gp->gp_av);
6823 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6824 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6825 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6826 ret->gp_cvgen = gp->gp_cvgen;
6827 ret->gp_flags = gp->gp_flags;
6828 ret->gp_line = gp->gp_line;
6829 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6834 Perl_mg_dup(pTHX_ MAGIC *mg)
6836 MAGIC *mgret = (MAGIC*)NULL;
6839 return (MAGIC*)NULL;
6840 /* look for it in the table first */
6841 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6845 for (; mg; mg = mg->mg_moremagic) {
6847 Newz(0, nmg, 1, MAGIC);
6851 mgprev->mg_moremagic = nmg;
6852 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6853 nmg->mg_private = mg->mg_private;
6854 nmg->mg_type = mg->mg_type;
6855 nmg->mg_flags = mg->mg_flags;
6856 if (mg->mg_type == 'r') {
6857 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6860 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6861 ? sv_dup_inc(mg->mg_obj)
6862 : sv_dup(mg->mg_obj);
6864 nmg->mg_len = mg->mg_len;
6865 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6866 if (mg->mg_ptr && mg->mg_type != 'g') {
6867 if (mg->mg_len >= 0) {
6868 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6869 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6870 AMT *amtp = (AMT*)mg->mg_ptr;
6871 AMT *namtp = (AMT*)nmg->mg_ptr;
6873 for (i = 1; i < NofAMmeth; i++) {
6874 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6878 else if (mg->mg_len == HEf_SVKEY)
6879 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6887 Perl_ptr_table_new(pTHX)
6890 Newz(0, tbl, 1, PTR_TBL_t);
6893 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6898 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6900 PTR_TBL_ENT_t *tblent;
6901 UV hash = PTR2UV(sv);
6903 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6904 for (; tblent; tblent = tblent->next) {
6905 if (tblent->oldval == sv)
6906 return tblent->newval;
6912 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6914 PTR_TBL_ENT_t *tblent, **otblent;
6915 /* XXX this may be pessimal on platforms where pointers aren't good
6916 * hash values e.g. if they grow faster in the most significant
6918 UV hash = PTR2UV(oldv);
6922 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6923 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6924 if (tblent->oldval == oldv) {
6925 tblent->newval = newv;
6930 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6931 tblent->oldval = oldv;
6932 tblent->newval = newv;
6933 tblent->next = *otblent;
6936 if (i && tbl->tbl_items > tbl->tbl_max)
6937 ptr_table_split(tbl);
6941 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6943 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6944 UV oldsize = tbl->tbl_max + 1;
6945 UV newsize = oldsize * 2;
6948 Renew(ary, newsize, PTR_TBL_ENT_t*);
6949 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6950 tbl->tbl_max = --newsize;
6952 for (i=0; i < oldsize; i++, ary++) {
6953 PTR_TBL_ENT_t **curentp, **entp, *ent;
6956 curentp = ary + oldsize;
6957 for (entp = ary, ent = *ary; ent; ent = *entp) {
6958 if ((newsize & PTR2UV(ent->oldval)) != i) {
6960 ent->next = *curentp;
6975 Perl_sv_dup(pTHX_ SV *sstr)
6979 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6981 /* look for it in the table first */
6982 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6986 /* create anew and remember what it is */
6988 ptr_table_store(PL_ptr_table, sstr, dstr);
6991 SvFLAGS(dstr) = SvFLAGS(sstr);
6992 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6993 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6996 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6997 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6998 PL_watch_pvx, SvPVX(sstr));
7001 switch (SvTYPE(sstr)) {
7006 SvANY(dstr) = new_XIV();
7007 SvIVX(dstr) = SvIVX(sstr);
7010 SvANY(dstr) = new_XNV();
7011 SvNVX(dstr) = SvNVX(sstr);
7014 SvANY(dstr) = new_XRV();
7015 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7018 SvANY(dstr) = new_XPV();
7019 SvCUR(dstr) = SvCUR(sstr);
7020 SvLEN(dstr) = SvLEN(sstr);
7022 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7023 else if (SvPVX(sstr) && SvLEN(sstr))
7024 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7026 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7029 SvANY(dstr) = new_XPVIV();
7030 SvCUR(dstr) = SvCUR(sstr);
7031 SvLEN(dstr) = SvLEN(sstr);
7032 SvIVX(dstr) = SvIVX(sstr);
7034 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7035 else if (SvPVX(sstr) && SvLEN(sstr))
7036 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7038 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7041 SvANY(dstr) = new_XPVNV();
7042 SvCUR(dstr) = SvCUR(sstr);
7043 SvLEN(dstr) = SvLEN(sstr);
7044 SvIVX(dstr) = SvIVX(sstr);
7045 SvNVX(dstr) = SvNVX(sstr);
7047 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7048 else if (SvPVX(sstr) && SvLEN(sstr))
7049 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7051 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7054 SvANY(dstr) = new_XPVMG();
7055 SvCUR(dstr) = SvCUR(sstr);
7056 SvLEN(dstr) = SvLEN(sstr);
7057 SvIVX(dstr) = SvIVX(sstr);
7058 SvNVX(dstr) = SvNVX(sstr);
7059 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7060 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7062 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7063 else if (SvPVX(sstr) && SvLEN(sstr))
7064 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7066 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7069 SvANY(dstr) = new_XPVBM();
7070 SvCUR(dstr) = SvCUR(sstr);
7071 SvLEN(dstr) = SvLEN(sstr);
7072 SvIVX(dstr) = SvIVX(sstr);
7073 SvNVX(dstr) = SvNVX(sstr);
7074 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7075 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7077 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7078 else if (SvPVX(sstr) && SvLEN(sstr))
7079 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7081 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7082 BmRARE(dstr) = BmRARE(sstr);
7083 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7084 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7087 SvANY(dstr) = new_XPVLV();
7088 SvCUR(dstr) = SvCUR(sstr);
7089 SvLEN(dstr) = SvLEN(sstr);
7090 SvIVX(dstr) = SvIVX(sstr);
7091 SvNVX(dstr) = SvNVX(sstr);
7092 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7093 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7095 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7096 else if (SvPVX(sstr) && SvLEN(sstr))
7097 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7099 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7100 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7101 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7102 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7103 LvTYPE(dstr) = LvTYPE(sstr);
7106 SvANY(dstr) = new_XPVGV();
7107 SvCUR(dstr) = SvCUR(sstr);
7108 SvLEN(dstr) = SvLEN(sstr);
7109 SvIVX(dstr) = SvIVX(sstr);
7110 SvNVX(dstr) = SvNVX(sstr);
7111 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7112 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7114 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7115 else if (SvPVX(sstr) && SvLEN(sstr))
7116 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7118 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7119 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7120 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7121 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7122 GvFLAGS(dstr) = GvFLAGS(sstr);
7123 GvGP(dstr) = gp_dup(GvGP(sstr));
7124 (void)GpREFCNT_inc(GvGP(dstr));
7127 SvANY(dstr) = new_XPVIO();
7128 SvCUR(dstr) = SvCUR(sstr);
7129 SvLEN(dstr) = SvLEN(sstr);
7130 SvIVX(dstr) = SvIVX(sstr);
7131 SvNVX(dstr) = SvNVX(sstr);
7132 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7133 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7135 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7136 else if (SvPVX(sstr) && SvLEN(sstr))
7137 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7139 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7140 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7141 if (IoOFP(sstr) == IoIFP(sstr))
7142 IoOFP(dstr) = IoIFP(dstr);
7144 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7145 /* PL_rsfp_filters entries have fake IoDIRP() */
7146 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7147 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7149 IoDIRP(dstr) = IoDIRP(sstr);
7150 IoLINES(dstr) = IoLINES(sstr);
7151 IoPAGE(dstr) = IoPAGE(sstr);
7152 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7153 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7154 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7155 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7156 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7157 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7158 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7159 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7160 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7161 IoTYPE(dstr) = IoTYPE(sstr);
7162 IoFLAGS(dstr) = IoFLAGS(sstr);
7165 SvANY(dstr) = new_XPVAV();
7166 SvCUR(dstr) = SvCUR(sstr);
7167 SvLEN(dstr) = SvLEN(sstr);
7168 SvIVX(dstr) = SvIVX(sstr);
7169 SvNVX(dstr) = SvNVX(sstr);
7170 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7171 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7172 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7173 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7174 if (AvARRAY((AV*)sstr)) {
7175 SV **dst_ary, **src_ary;
7176 SSize_t items = AvFILLp((AV*)sstr) + 1;
7178 src_ary = AvARRAY((AV*)sstr);
7179 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7180 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7181 SvPVX(dstr) = (char*)dst_ary;
7182 AvALLOC((AV*)dstr) = dst_ary;
7183 if (AvREAL((AV*)sstr)) {
7185 *dst_ary++ = sv_dup_inc(*src_ary++);
7189 *dst_ary++ = sv_dup(*src_ary++);
7191 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7192 while (items-- > 0) {
7193 *dst_ary++ = &PL_sv_undef;
7197 SvPVX(dstr) = Nullch;
7198 AvALLOC((AV*)dstr) = (SV**)NULL;
7202 SvANY(dstr) = new_XPVHV();
7203 SvCUR(dstr) = SvCUR(sstr);
7204 SvLEN(dstr) = SvLEN(sstr);
7205 SvIVX(dstr) = SvIVX(sstr);
7206 SvNVX(dstr) = SvNVX(sstr);
7207 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7208 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7209 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7210 if (HvARRAY((HV*)sstr)) {
7212 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7213 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7214 Newz(0, dxhv->xhv_array,
7215 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7216 while (i <= sxhv->xhv_max) {
7217 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7218 !!HvSHAREKEYS(sstr));
7221 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7224 SvPVX(dstr) = Nullch;
7225 HvEITER((HV*)dstr) = (HE*)NULL;
7227 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7228 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7231 SvANY(dstr) = new_XPVFM();
7232 FmLINES(dstr) = FmLINES(sstr);
7236 SvANY(dstr) = new_XPVCV();
7238 SvCUR(dstr) = SvCUR(sstr);
7239 SvLEN(dstr) = SvLEN(sstr);
7240 SvIVX(dstr) = SvIVX(sstr);
7241 SvNVX(dstr) = SvNVX(sstr);
7242 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7243 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7244 if (SvPVX(sstr) && SvLEN(sstr))
7245 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7247 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7248 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7249 CvSTART(dstr) = CvSTART(sstr);
7250 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7251 CvXSUB(dstr) = CvXSUB(sstr);
7252 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7253 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7254 CvDEPTH(dstr) = CvDEPTH(sstr);
7255 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7256 /* XXX padlists are real, but pretend to be not */
7257 AvREAL_on(CvPADLIST(sstr));
7258 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7259 AvREAL_off(CvPADLIST(sstr));
7260 AvREAL_off(CvPADLIST(dstr));
7263 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7264 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7265 CvFLAGS(dstr) = CvFLAGS(sstr);
7268 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7272 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7279 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7284 return (PERL_CONTEXT*)NULL;
7286 /* look for it in the table first */
7287 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7291 /* create anew and remember what it is */
7292 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7293 ptr_table_store(PL_ptr_table, cxs, ncxs);
7296 PERL_CONTEXT *cx = &cxs[ix];
7297 PERL_CONTEXT *ncx = &ncxs[ix];
7298 ncx->cx_type = cx->cx_type;
7299 if (CxTYPE(cx) == CXt_SUBST) {
7300 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7303 ncx->blk_oldsp = cx->blk_oldsp;
7304 ncx->blk_oldcop = cx->blk_oldcop;
7305 ncx->blk_oldretsp = cx->blk_oldretsp;
7306 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7307 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7308 ncx->blk_oldpm = cx->blk_oldpm;
7309 ncx->blk_gimme = cx->blk_gimme;
7310 switch (CxTYPE(cx)) {
7312 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7313 ? cv_dup_inc(cx->blk_sub.cv)
7314 : cv_dup(cx->blk_sub.cv));
7315 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7316 ? av_dup_inc(cx->blk_sub.argarray)
7318 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7319 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7320 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7321 ncx->blk_sub.lval = cx->blk_sub.lval;
7324 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7325 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7326 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7327 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7328 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7331 ncx->blk_loop.label = cx->blk_loop.label;
7332 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7333 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7334 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7335 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7336 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7337 ? cx->blk_loop.iterdata
7338 : gv_dup((GV*)cx->blk_loop.iterdata));
7339 ncx->blk_loop.oldcurpad
7340 = (SV**)ptr_table_fetch(PL_ptr_table,
7341 cx->blk_loop.oldcurpad);
7342 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7343 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7344 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7345 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7346 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7349 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7350 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7351 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7352 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7365 Perl_si_dup(pTHX_ PERL_SI *si)
7370 return (PERL_SI*)NULL;
7372 /* look for it in the table first */
7373 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7377 /* create anew and remember what it is */
7378 Newz(56, nsi, 1, PERL_SI);
7379 ptr_table_store(PL_ptr_table, si, nsi);
7381 nsi->si_stack = av_dup_inc(si->si_stack);
7382 nsi->si_cxix = si->si_cxix;
7383 nsi->si_cxmax = si->si_cxmax;
7384 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7385 nsi->si_type = si->si_type;
7386 nsi->si_prev = si_dup(si->si_prev);
7387 nsi->si_next = si_dup(si->si_next);
7388 nsi->si_markoff = si->si_markoff;
7393 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7394 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7395 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7396 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7397 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7398 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7399 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7400 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7401 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7402 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7403 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7404 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7407 #define pv_dup_inc(p) SAVEPV(p)
7408 #define pv_dup(p) SAVEPV(p)
7409 #define svp_dup_inc(p,pp) any_dup(p,pp)
7412 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7419 /* look for it in the table first */
7420 ret = ptr_table_fetch(PL_ptr_table, v);
7424 /* see if it is part of the interpreter structure */
7425 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7426 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7434 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7436 ANY *ss = proto_perl->Tsavestack;
7437 I32 ix = proto_perl->Tsavestack_ix;
7438 I32 max = proto_perl->Tsavestack_max;
7451 void (*dptr) (void*);
7452 void (*dxptr) (pTHXo_ void*);
7455 Newz(54, nss, max, ANY);
7461 case SAVEt_ITEM: /* normal string */
7462 sv = (SV*)POPPTR(ss,ix);
7463 TOPPTR(nss,ix) = sv_dup_inc(sv);
7464 sv = (SV*)POPPTR(ss,ix);
7465 TOPPTR(nss,ix) = sv_dup_inc(sv);
7467 case SAVEt_SV: /* scalar reference */
7468 sv = (SV*)POPPTR(ss,ix);
7469 TOPPTR(nss,ix) = sv_dup_inc(sv);
7470 gv = (GV*)POPPTR(ss,ix);
7471 TOPPTR(nss,ix) = gv_dup_inc(gv);
7473 case SAVEt_GENERIC_PVREF: /* generic char* */
7474 c = (char*)POPPTR(ss,ix);
7475 TOPPTR(nss,ix) = pv_dup(c);
7476 ptr = POPPTR(ss,ix);
7477 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7479 case SAVEt_GENERIC_SVREF: /* generic sv */
7480 case SAVEt_SVREF: /* scalar reference */
7481 sv = (SV*)POPPTR(ss,ix);
7482 TOPPTR(nss,ix) = sv_dup_inc(sv);
7483 ptr = POPPTR(ss,ix);
7484 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7486 case SAVEt_AV: /* array reference */
7487 av = (AV*)POPPTR(ss,ix);
7488 TOPPTR(nss,ix) = av_dup_inc(av);
7489 gv = (GV*)POPPTR(ss,ix);
7490 TOPPTR(nss,ix) = gv_dup(gv);
7492 case SAVEt_HV: /* hash reference */
7493 hv = (HV*)POPPTR(ss,ix);
7494 TOPPTR(nss,ix) = hv_dup_inc(hv);
7495 gv = (GV*)POPPTR(ss,ix);
7496 TOPPTR(nss,ix) = gv_dup(gv);
7498 case SAVEt_INT: /* int reference */
7499 ptr = POPPTR(ss,ix);
7500 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7501 intval = (int)POPINT(ss,ix);
7502 TOPINT(nss,ix) = intval;
7504 case SAVEt_LONG: /* long reference */
7505 ptr = POPPTR(ss,ix);
7506 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7507 longval = (long)POPLONG(ss,ix);
7508 TOPLONG(nss,ix) = longval;
7510 case SAVEt_I32: /* I32 reference */
7511 case SAVEt_I16: /* I16 reference */
7512 case SAVEt_I8: /* I8 reference */
7513 ptr = POPPTR(ss,ix);
7514 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7518 case SAVEt_IV: /* IV reference */
7519 ptr = POPPTR(ss,ix);
7520 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7524 case SAVEt_SPTR: /* SV* reference */
7525 ptr = POPPTR(ss,ix);
7526 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7527 sv = (SV*)POPPTR(ss,ix);
7528 TOPPTR(nss,ix) = sv_dup(sv);
7530 case SAVEt_VPTR: /* random* reference */
7531 ptr = POPPTR(ss,ix);
7532 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7533 ptr = POPPTR(ss,ix);
7534 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7536 case SAVEt_PPTR: /* char* reference */
7537 ptr = POPPTR(ss,ix);
7538 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7539 c = (char*)POPPTR(ss,ix);
7540 TOPPTR(nss,ix) = pv_dup(c);
7542 case SAVEt_HPTR: /* HV* reference */
7543 ptr = POPPTR(ss,ix);
7544 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7545 hv = (HV*)POPPTR(ss,ix);
7546 TOPPTR(nss,ix) = hv_dup(hv);
7548 case SAVEt_APTR: /* AV* reference */
7549 ptr = POPPTR(ss,ix);
7550 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7551 av = (AV*)POPPTR(ss,ix);
7552 TOPPTR(nss,ix) = av_dup(av);
7555 gv = (GV*)POPPTR(ss,ix);
7556 TOPPTR(nss,ix) = gv_dup(gv);
7558 case SAVEt_GP: /* scalar reference */
7559 gp = (GP*)POPPTR(ss,ix);
7560 TOPPTR(nss,ix) = gp = gp_dup(gp);
7561 (void)GpREFCNT_inc(gp);
7562 gv = (GV*)POPPTR(ss,ix);
7563 TOPPTR(nss,ix) = gv_dup_inc(c);
7564 c = (char*)POPPTR(ss,ix);
7565 TOPPTR(nss,ix) = pv_dup(c);
7572 sv = (SV*)POPPTR(ss,ix);
7573 TOPPTR(nss,ix) = sv_dup_inc(sv);
7576 ptr = POPPTR(ss,ix);
7577 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7578 /* these are assumed to be refcounted properly */
7579 switch (((OP*)ptr)->op_type) {
7586 TOPPTR(nss,ix) = ptr;
7591 TOPPTR(nss,ix) = Nullop;
7596 TOPPTR(nss,ix) = Nullop;
7599 c = (char*)POPPTR(ss,ix);
7600 TOPPTR(nss,ix) = pv_dup_inc(c);
7603 longval = POPLONG(ss,ix);
7604 TOPLONG(nss,ix) = longval;
7607 hv = (HV*)POPPTR(ss,ix);
7608 TOPPTR(nss,ix) = hv_dup_inc(hv);
7609 c = (char*)POPPTR(ss,ix);
7610 TOPPTR(nss,ix) = pv_dup_inc(c);
7614 case SAVEt_DESTRUCTOR:
7615 ptr = POPPTR(ss,ix);
7616 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7617 dptr = POPDPTR(ss,ix);
7618 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7620 case SAVEt_DESTRUCTOR_X:
7621 ptr = POPPTR(ss,ix);
7622 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7623 dxptr = POPDXPTR(ss,ix);
7624 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7626 case SAVEt_REGCONTEXT:
7632 case SAVEt_STACK_POS: /* Position on Perl stack */
7636 case SAVEt_AELEM: /* array element */
7637 sv = (SV*)POPPTR(ss,ix);
7638 TOPPTR(nss,ix) = sv_dup_inc(sv);
7641 av = (AV*)POPPTR(ss,ix);
7642 TOPPTR(nss,ix) = av_dup_inc(av);
7644 case SAVEt_HELEM: /* hash element */
7645 sv = (SV*)POPPTR(ss,ix);
7646 TOPPTR(nss,ix) = sv_dup_inc(sv);
7647 sv = (SV*)POPPTR(ss,ix);
7648 TOPPTR(nss,ix) = sv_dup_inc(sv);
7649 hv = (HV*)POPPTR(ss,ix);
7650 TOPPTR(nss,ix) = hv_dup_inc(hv);
7653 ptr = POPPTR(ss,ix);
7654 TOPPTR(nss,ix) = ptr;
7661 av = (AV*)POPPTR(ss,ix);
7662 TOPPTR(nss,ix) = av_dup(av);
7665 longval = (long)POPLONG(ss,ix);
7666 TOPLONG(nss,ix) = longval;
7667 ptr = POPPTR(ss,ix);
7668 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7669 sv = (SV*)POPPTR(ss,ix);
7670 TOPPTR(nss,ix) = sv_dup(sv);
7673 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7685 perl_clone(PerlInterpreter *proto_perl, UV flags)
7688 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7691 #ifdef PERL_IMPLICIT_SYS
7692 return perl_clone_using(proto_perl, flags,
7694 proto_perl->IMemShared,
7695 proto_perl->IMemParse,
7705 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7706 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7707 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7708 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7709 struct IPerlDir* ipD, struct IPerlSock* ipS,
7710 struct IPerlProc* ipP)
7712 /* XXX many of the string copies here can be optimized if they're
7713 * constants; they need to be allocated as common memory and just
7714 * their pointers copied. */
7718 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7720 PERL_SET_THX(pPerl);
7721 # else /* !PERL_OBJECT */
7722 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7723 PERL_SET_THX(my_perl);
7726 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7731 # else /* !DEBUGGING */
7732 Zero(my_perl, 1, PerlInterpreter);
7733 # endif /* DEBUGGING */
7737 PL_MemShared = ipMS;
7745 # endif /* PERL_OBJECT */
7746 #else /* !PERL_IMPLICIT_SYS */
7748 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7749 PERL_SET_THX(my_perl);
7752 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7757 # else /* !DEBUGGING */
7758 Zero(my_perl, 1, PerlInterpreter);
7759 # endif /* DEBUGGING */
7760 #endif /* PERL_IMPLICIT_SYS */
7763 PL_xiv_arenaroot = NULL;
7765 PL_xnv_arenaroot = NULL;
7767 PL_xrv_arenaroot = NULL;
7769 PL_xpv_arenaroot = NULL;
7771 PL_xpviv_arenaroot = NULL;
7772 PL_xpviv_root = NULL;
7773 PL_xpvnv_arenaroot = NULL;
7774 PL_xpvnv_root = NULL;
7775 PL_xpvcv_arenaroot = NULL;
7776 PL_xpvcv_root = NULL;
7777 PL_xpvav_arenaroot = NULL;
7778 PL_xpvav_root = NULL;
7779 PL_xpvhv_arenaroot = NULL;
7780 PL_xpvhv_root = NULL;
7781 PL_xpvmg_arenaroot = NULL;
7782 PL_xpvmg_root = NULL;
7783 PL_xpvlv_arenaroot = NULL;
7784 PL_xpvlv_root = NULL;
7785 PL_xpvbm_arenaroot = NULL;
7786 PL_xpvbm_root = NULL;
7787 PL_he_arenaroot = NULL;
7789 PL_nice_chunk = NULL;
7790 PL_nice_chunk_size = 0;
7793 PL_sv_root = Nullsv;
7794 PL_sv_arenaroot = Nullsv;
7796 PL_debug = proto_perl->Idebug;
7798 /* create SV map for pointer relocation */
7799 PL_ptr_table = ptr_table_new();
7801 /* initialize these special pointers as early as possible */
7802 SvANY(&PL_sv_undef) = NULL;
7803 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7804 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7805 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7808 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7810 SvANY(&PL_sv_no) = new_XPVNV();
7812 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7813 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7814 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7815 SvCUR(&PL_sv_no) = 0;
7816 SvLEN(&PL_sv_no) = 1;
7817 SvNVX(&PL_sv_no) = 0;
7818 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7821 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7823 SvANY(&PL_sv_yes) = new_XPVNV();
7825 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7826 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7827 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7828 SvCUR(&PL_sv_yes) = 1;
7829 SvLEN(&PL_sv_yes) = 2;
7830 SvNVX(&PL_sv_yes) = 1;
7831 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7833 /* create shared string table */
7834 PL_strtab = newHV();
7835 HvSHAREKEYS_off(PL_strtab);
7836 hv_ksplit(PL_strtab, 512);
7837 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7839 PL_compiling = proto_perl->Icompiling;
7840 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7841 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7842 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7843 if (!specialWARN(PL_compiling.cop_warnings))
7844 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7845 if (!specialCopIO(PL_compiling.cop_io))
7846 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
7847 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7849 /* pseudo environmental stuff */
7850 PL_origargc = proto_perl->Iorigargc;
7852 New(0, PL_origargv, i+1, char*);
7853 PL_origargv[i] = '\0';
7855 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7857 PL_envgv = gv_dup(proto_perl->Ienvgv);
7858 PL_incgv = gv_dup(proto_perl->Iincgv);
7859 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7860 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7861 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7862 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7865 PL_minus_c = proto_perl->Iminus_c;
7866 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7867 PL_localpatches = proto_perl->Ilocalpatches;
7868 PL_splitstr = proto_perl->Isplitstr;
7869 PL_preprocess = proto_perl->Ipreprocess;
7870 PL_minus_n = proto_perl->Iminus_n;
7871 PL_minus_p = proto_perl->Iminus_p;
7872 PL_minus_l = proto_perl->Iminus_l;
7873 PL_minus_a = proto_perl->Iminus_a;
7874 PL_minus_F = proto_perl->Iminus_F;
7875 PL_doswitches = proto_perl->Idoswitches;
7876 PL_dowarn = proto_perl->Idowarn;
7877 PL_doextract = proto_perl->Idoextract;
7878 PL_sawampersand = proto_perl->Isawampersand;
7879 PL_unsafe = proto_perl->Iunsafe;
7880 PL_inplace = SAVEPV(proto_perl->Iinplace);
7881 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7882 PL_perldb = proto_perl->Iperldb;
7883 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7885 /* magical thingies */
7886 /* XXX time(&PL_basetime) when asked for? */
7887 PL_basetime = proto_perl->Ibasetime;
7888 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7890 PL_maxsysfd = proto_perl->Imaxsysfd;
7891 PL_multiline = proto_perl->Imultiline;
7892 PL_statusvalue = proto_perl->Istatusvalue;
7894 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7897 /* shortcuts to various I/O objects */
7898 PL_stdingv = gv_dup(proto_perl->Istdingv);
7899 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7900 PL_defgv = gv_dup(proto_perl->Idefgv);
7901 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7902 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7903 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7905 /* shortcuts to regexp stuff */
7906 PL_replgv = gv_dup(proto_perl->Ireplgv);
7908 /* shortcuts to misc objects */
7909 PL_errgv = gv_dup(proto_perl->Ierrgv);
7911 /* shortcuts to debugging objects */
7912 PL_DBgv = gv_dup(proto_perl->IDBgv);
7913 PL_DBline = gv_dup(proto_perl->IDBline);
7914 PL_DBsub = gv_dup(proto_perl->IDBsub);
7915 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7916 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7917 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7918 PL_lineary = av_dup(proto_perl->Ilineary);
7919 PL_dbargs = av_dup(proto_perl->Idbargs);
7922 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7923 PL_curstash = hv_dup(proto_perl->Tcurstash);
7924 PL_debstash = hv_dup(proto_perl->Idebstash);
7925 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7926 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7928 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7929 PL_endav = av_dup_inc(proto_perl->Iendav);
7930 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7931 PL_initav = av_dup_inc(proto_perl->Iinitav);
7933 PL_sub_generation = proto_perl->Isub_generation;
7935 /* funky return mechanisms */
7936 PL_forkprocess = proto_perl->Iforkprocess;
7938 /* subprocess state */
7939 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7941 /* internal state */
7942 PL_tainting = proto_perl->Itainting;
7943 PL_maxo = proto_perl->Imaxo;
7944 if (proto_perl->Iop_mask)
7945 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7947 PL_op_mask = Nullch;
7949 /* current interpreter roots */
7950 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7951 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7952 PL_main_start = proto_perl->Imain_start;
7953 PL_eval_root = proto_perl->Ieval_root;
7954 PL_eval_start = proto_perl->Ieval_start;
7956 /* runtime control stuff */
7957 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7958 PL_copline = proto_perl->Icopline;
7960 PL_filemode = proto_perl->Ifilemode;
7961 PL_lastfd = proto_perl->Ilastfd;
7962 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7965 PL_gensym = proto_perl->Igensym;
7966 PL_preambled = proto_perl->Ipreambled;
7967 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7968 PL_laststatval = proto_perl->Ilaststatval;
7969 PL_laststype = proto_perl->Ilaststype;
7970 PL_mess_sv = Nullsv;
7972 PL_orslen = proto_perl->Iorslen;
7973 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7974 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7976 /* interpreter atexit processing */
7977 PL_exitlistlen = proto_perl->Iexitlistlen;
7978 if (PL_exitlistlen) {
7979 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7980 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7983 PL_exitlist = (PerlExitListEntry*)NULL;
7984 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7986 PL_profiledata = NULL;
7987 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7988 /* PL_rsfp_filters entries have fake IoDIRP() */
7989 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7991 PL_compcv = cv_dup(proto_perl->Icompcv);
7992 PL_comppad = av_dup(proto_perl->Icomppad);
7993 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7994 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7995 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7996 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7997 proto_perl->Tcurpad);
7999 #ifdef HAVE_INTERP_INTERN
8000 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8003 /* more statics moved here */
8004 PL_generation = proto_perl->Igeneration;
8005 PL_DBcv = cv_dup(proto_perl->IDBcv);
8007 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8008 PL_in_clean_all = proto_perl->Iin_clean_all;
8010 PL_uid = proto_perl->Iuid;
8011 PL_euid = proto_perl->Ieuid;
8012 PL_gid = proto_perl->Igid;
8013 PL_egid = proto_perl->Iegid;
8014 PL_nomemok = proto_perl->Inomemok;
8015 PL_an = proto_perl->Ian;
8016 PL_cop_seqmax = proto_perl->Icop_seqmax;
8017 PL_op_seqmax = proto_perl->Iop_seqmax;
8018 PL_evalseq = proto_perl->Ievalseq;
8019 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8020 PL_origalen = proto_perl->Iorigalen;
8021 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8022 PL_osname = SAVEPV(proto_perl->Iosname);
8023 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8024 PL_sighandlerp = proto_perl->Isighandlerp;
8027 PL_runops = proto_perl->Irunops;
8029 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8032 PL_cshlen = proto_perl->Icshlen;
8033 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8036 PL_lex_state = proto_perl->Ilex_state;
8037 PL_lex_defer = proto_perl->Ilex_defer;
8038 PL_lex_expect = proto_perl->Ilex_expect;
8039 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8040 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8041 PL_lex_starts = proto_perl->Ilex_starts;
8042 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8043 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8044 PL_lex_op = proto_perl->Ilex_op;
8045 PL_lex_inpat = proto_perl->Ilex_inpat;
8046 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8047 PL_lex_brackets = proto_perl->Ilex_brackets;
8048 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8049 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8050 PL_lex_casemods = proto_perl->Ilex_casemods;
8051 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8052 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8054 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8055 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8056 PL_nexttoke = proto_perl->Inexttoke;
8058 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8059 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8060 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8061 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8062 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8063 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8064 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8065 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8066 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8067 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8068 PL_pending_ident = proto_perl->Ipending_ident;
8069 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8071 PL_expect = proto_perl->Iexpect;
8073 PL_multi_start = proto_perl->Imulti_start;
8074 PL_multi_end = proto_perl->Imulti_end;
8075 PL_multi_open = proto_perl->Imulti_open;
8076 PL_multi_close = proto_perl->Imulti_close;
8078 PL_error_count = proto_perl->Ierror_count;
8079 PL_subline = proto_perl->Isubline;
8080 PL_subname = sv_dup_inc(proto_perl->Isubname);
8082 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8083 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8084 PL_padix = proto_perl->Ipadix;
8085 PL_padix_floor = proto_perl->Ipadix_floor;
8086 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8088 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8089 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8090 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8091 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8092 PL_last_lop_op = proto_perl->Ilast_lop_op;
8093 PL_in_my = proto_perl->Iin_my;
8094 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8096 PL_cryptseen = proto_perl->Icryptseen;
8099 PL_hints = proto_perl->Ihints;
8101 PL_amagic_generation = proto_perl->Iamagic_generation;
8103 #ifdef USE_LOCALE_COLLATE
8104 PL_collation_ix = proto_perl->Icollation_ix;
8105 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8106 PL_collation_standard = proto_perl->Icollation_standard;
8107 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8108 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8109 #endif /* USE_LOCALE_COLLATE */
8111 #ifdef USE_LOCALE_NUMERIC
8112 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8113 PL_numeric_standard = proto_perl->Inumeric_standard;
8114 PL_numeric_local = proto_perl->Inumeric_local;
8115 PL_numeric_radix = proto_perl->Inumeric_radix;
8116 #endif /* !USE_LOCALE_NUMERIC */
8118 /* utf8 character classes */
8119 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8120 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8121 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8122 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8123 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8124 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8125 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8126 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8127 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8128 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8129 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8130 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8131 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8132 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8133 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8134 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8135 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8138 PL_last_swash_hv = Nullhv; /* reinits on demand */
8139 PL_last_swash_klen = 0;
8140 PL_last_swash_key[0]= '\0';
8141 PL_last_swash_tmps = (U8*)NULL;
8142 PL_last_swash_slen = 0;
8144 /* perly.c globals */
8145 PL_yydebug = proto_perl->Iyydebug;
8146 PL_yynerrs = proto_perl->Iyynerrs;
8147 PL_yyerrflag = proto_perl->Iyyerrflag;
8148 PL_yychar = proto_perl->Iyychar;
8149 PL_yyval = proto_perl->Iyyval;
8150 PL_yylval = proto_perl->Iyylval;
8152 PL_glob_index = proto_perl->Iglob_index;
8153 PL_srand_called = proto_perl->Isrand_called;
8154 PL_uudmap['M'] = 0; /* reinits on demand */
8155 PL_bitcount = Nullch; /* reinits on demand */
8157 if (proto_perl->Ipsig_ptr) {
8158 int sig_num[] = { SIG_NUM };
8159 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8160 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8161 for (i = 1; PL_sig_name[i]; i++) {
8162 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8163 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8167 PL_psig_ptr = (SV**)NULL;
8168 PL_psig_name = (SV**)NULL;
8171 /* thrdvar.h stuff */
8174 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8175 PL_tmps_ix = proto_perl->Ttmps_ix;
8176 PL_tmps_max = proto_perl->Ttmps_max;
8177 PL_tmps_floor = proto_perl->Ttmps_floor;
8178 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8180 while (i <= PL_tmps_ix) {
8181 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8185 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8186 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8187 Newz(54, PL_markstack, i, I32);
8188 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8189 - proto_perl->Tmarkstack);
8190 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8191 - proto_perl->Tmarkstack);
8192 Copy(proto_perl->Tmarkstack, PL_markstack,
8193 PL_markstack_ptr - PL_markstack + 1, I32);
8195 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8196 * NOTE: unlike the others! */
8197 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8198 PL_scopestack_max = proto_perl->Tscopestack_max;
8199 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8200 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8202 /* next push_return() sets PL_retstack[PL_retstack_ix]
8203 * NOTE: unlike the others! */
8204 PL_retstack_ix = proto_perl->Tretstack_ix;
8205 PL_retstack_max = proto_perl->Tretstack_max;
8206 Newz(54, PL_retstack, PL_retstack_max, OP*);
8207 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8209 /* NOTE: si_dup() looks at PL_markstack */
8210 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8212 /* PL_curstack = PL_curstackinfo->si_stack; */
8213 PL_curstack = av_dup(proto_perl->Tcurstack);
8214 PL_mainstack = av_dup(proto_perl->Tmainstack);
8216 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8217 PL_stack_base = AvARRAY(PL_curstack);
8218 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8219 - proto_perl->Tstack_base);
8220 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8222 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8223 * NOTE: unlike the others! */
8224 PL_savestack_ix = proto_perl->Tsavestack_ix;
8225 PL_savestack_max = proto_perl->Tsavestack_max;
8226 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8227 PL_savestack = ss_dup(proto_perl);
8231 ENTER; /* perl_destruct() wants to LEAVE; */
8234 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8235 PL_top_env = &PL_start_env;
8237 PL_op = proto_perl->Top;
8240 PL_Xpv = (XPV*)NULL;
8241 PL_na = proto_perl->Tna;
8243 PL_statbuf = proto_perl->Tstatbuf;
8244 PL_statcache = proto_perl->Tstatcache;
8245 PL_statgv = gv_dup(proto_perl->Tstatgv);
8246 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8248 PL_timesbuf = proto_perl->Ttimesbuf;
8251 PL_tainted = proto_perl->Ttainted;
8252 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8253 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8254 PL_rs = sv_dup_inc(proto_perl->Trs);
8255 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8256 PL_ofslen = proto_perl->Tofslen;
8257 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8258 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8259 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8260 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8261 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8262 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8264 PL_restartop = proto_perl->Trestartop;
8265 PL_in_eval = proto_perl->Tin_eval;
8266 PL_delaymagic = proto_perl->Tdelaymagic;
8267 PL_dirty = proto_perl->Tdirty;
8268 PL_localizing = proto_perl->Tlocalizing;
8270 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8271 PL_protect = proto_perl->Tprotect;
8273 PL_errors = sv_dup_inc(proto_perl->Terrors);
8274 PL_av_fetch_sv = Nullsv;
8275 PL_hv_fetch_sv = Nullsv;
8276 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8277 PL_modcount = proto_perl->Tmodcount;
8278 PL_lastgotoprobe = Nullop;
8279 PL_dumpindent = proto_perl->Tdumpindent;
8281 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8282 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8283 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8284 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8285 PL_sortcxix = proto_perl->Tsortcxix;
8286 PL_efloatbuf = Nullch; /* reinits on demand */
8287 PL_efloatsize = 0; /* reinits on demand */
8291 PL_screamfirst = NULL;
8292 PL_screamnext = NULL;
8293 PL_maxscream = -1; /* reinits on demand */
8294 PL_lastscream = Nullsv;
8296 PL_watchaddr = NULL;
8297 PL_watchok = Nullch;
8299 PL_regdummy = proto_perl->Tregdummy;
8300 PL_regcomp_parse = Nullch;
8301 PL_regxend = Nullch;
8302 PL_regcode = (regnode*)NULL;
8305 PL_regprecomp = Nullch;
8310 PL_seen_zerolen = 0;
8312 PL_regcomp_rx = (regexp*)NULL;
8314 PL_colorset = 0; /* reinits PL_colors[] */
8315 /*PL_colors[6] = {0,0,0,0,0,0};*/
8316 PL_reg_whilem_seen = 0;
8317 PL_reginput = Nullch;
8320 PL_regstartp = (I32*)NULL;
8321 PL_regendp = (I32*)NULL;
8322 PL_reglastparen = (U32*)NULL;
8323 PL_regtill = Nullch;
8325 PL_reg_start_tmp = (char**)NULL;
8326 PL_reg_start_tmpl = 0;
8327 PL_regdata = (struct reg_data*)NULL;
8330 PL_reg_eval_set = 0;
8332 PL_regprogram = (regnode*)NULL;
8334 PL_regcc = (CURCUR*)NULL;
8335 PL_reg_call_cc = (struct re_cc_state*)NULL;
8336 PL_reg_re = (regexp*)NULL;
8337 PL_reg_ganch = Nullch;
8339 PL_reg_magic = (MAGIC*)NULL;
8341 PL_reg_oldcurpm = (PMOP*)NULL;
8342 PL_reg_curpm = (PMOP*)NULL;
8343 PL_reg_oldsaved = Nullch;
8344 PL_reg_oldsavedlen = 0;
8346 PL_reg_leftiter = 0;
8347 PL_reg_poscache = Nullch;
8348 PL_reg_poscache_size= 0;
8350 /* RE engine - function pointers */
8351 PL_regcompp = proto_perl->Tregcompp;
8352 PL_regexecp = proto_perl->Tregexecp;
8353 PL_regint_start = proto_perl->Tregint_start;
8354 PL_regint_string = proto_perl->Tregint_string;
8355 PL_regfree = proto_perl->Tregfree;
8357 PL_reginterp_cnt = 0;
8358 PL_reg_starttry = 0;
8361 return (PerlInterpreter*)pPerl;
8367 #else /* !USE_ITHREADS */
8373 #endif /* USE_ITHREADS */
8376 do_report_used(pTHXo_ SV *sv)
8378 if (SvTYPE(sv) != SVTYPEMASK) {
8379 PerlIO_printf(Perl_debug_log, "****\n");
8385 do_clean_objs(pTHXo_ SV *sv)
8389 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8390 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8391 if (SvWEAKREF(sv)) {
8402 /* XXX Might want to check arrays, etc. */
8405 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8407 do_clean_named_objs(pTHXo_ SV *sv)
8409 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8410 if ( SvOBJECT(GvSV(sv)) ||
8411 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8412 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8413 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8414 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8416 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8424 do_clean_all(pTHXo_ SV *sv)
8426 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8427 SvFLAGS(sv) |= SVf_BREAK;