3 * Copyright (c) 1991-2000, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
19 #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)
21 static void do_report_used(pTHXo_ SV *sv);
22 static void do_clean_objs(pTHXo_ SV *sv);
23 #ifndef DISABLE_DESTRUCTOR_KLUDGE
24 static void do_clean_named_objs(pTHXo_ SV *sv);
26 static void do_clean_all(pTHXo_ SV *sv);
29 * "A time to plant, and a time to uproot what was planted..."
34 SvANY(p) = (void *)PL_sv_root; \
35 SvFLAGS(p) = SVTYPEMASK; \
40 /* sv_mutex must be held while calling uproot_SV() */
41 #define uproot_SV(p) \
44 PL_sv_root = (SV*)SvANY(p); \
66 if (PL_debug & 32768) \
76 if (PL_debug & 32768) {
81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
83 svend = &sva[SvREFCNT(sva)];
84 if (p >= sv && p < svend)
88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
90 "Attempt to free non-arena SV: 0x%"UVxf,
98 #else /* ! DEBUGGING */
100 #define del_SV(p) plant_SV(p)
102 #endif /* DEBUGGING */
105 Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
110 Zero(ptr, size, char);
112 /* The first SV in an arena isn't an SV. */
113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
120 svend = &sva[SvREFCNT(sva) - 1];
123 SvANY(sv) = (void *)(SV*)(sv + 1);
124 SvFLAGS(sv) = SVTYPEMASK;
128 SvFLAGS(sv) = SVTYPEMASK;
131 /* sv_mutex must be held while calling more_sv() */
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
151 S_visit(pTHX_ SVFUNC_t f)
157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
158 svend = &sva[SvREFCNT(sva)];
159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
167 Perl_sv_report_used(pTHX)
169 visit(do_report_used);
173 Perl_sv_clean_objs(pTHX)
175 PL_in_clean_objs = TRUE;
176 visit(do_clean_objs);
177 #ifndef DISABLE_DESTRUCTOR_KLUDGE
178 /* some barnacles may yet remain, clinging to typeglobs */
179 visit(do_clean_named_objs);
181 PL_in_clean_objs = FALSE;
185 Perl_sv_clean_all(pTHX)
187 PL_in_clean_all = TRUE;
189 PL_in_clean_all = FALSE;
193 Perl_sv_free_arenas(pTHX)
197 XPV *arena, *arenanext;
199 /* Free arenas here, but be careful about fake ones. (We assume
200 contiguity of the fake ones with the corresponding real ones.) */
202 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
203 svanext = (SV*) SvANY(sva);
204 while (svanext && SvFAKE(svanext))
205 svanext = (SV*) SvANY(svanext);
208 Safefree((void *)sva);
211 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
212 arenanext = (XPV*)arena->xpv_pv;
215 PL_xiv_arenaroot = 0;
217 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
221 PL_xnv_arenaroot = 0;
223 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
227 PL_xrv_arenaroot = 0;
229 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
233 PL_xpv_arenaroot = 0;
235 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
239 PL_xpviv_arenaroot = 0;
241 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
245 PL_xpvnv_arenaroot = 0;
247 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
251 PL_xpvcv_arenaroot = 0;
253 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
257 PL_xpvav_arenaroot = 0;
259 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
263 PL_xpvhv_arenaroot = 0;
265 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
269 PL_xpvmg_arenaroot = 0;
271 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
275 PL_xpvlv_arenaroot = 0;
277 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
281 PL_xpvbm_arenaroot = 0;
283 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
290 Safefree(PL_nice_chunk);
291 PL_nice_chunk = Nullch;
292 PL_nice_chunk_size = 0;
298 Perl_report_uninit(pTHX)
301 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
302 " in ", PL_op_desc[PL_op->op_type]);
304 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
316 * See comment in more_xiv() -- RAM.
318 PL_xiv_root = *(IV**)xiv;
320 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
324 S_del_xiv(pTHX_ XPVIV *p)
326 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
328 *(IV**)xiv = PL_xiv_root;
339 New(705, ptr, 1008/sizeof(XPV), XPV);
340 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
341 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
344 xivend = &xiv[1008 / sizeof(IV) - 1];
345 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
347 while (xiv < xivend) {
348 *(IV**)xiv = (IV *)(xiv + 1);
362 PL_xnv_root = *(NV**)xnv;
364 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
368 S_del_xnv(pTHX_ XPVNV *p)
370 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
372 *(NV**)xnv = PL_xnv_root;
383 New(711, ptr, 1008/sizeof(XPV), XPV);
384 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
385 PL_xnv_arenaroot = ptr;
388 xnvend = &xnv[1008 / sizeof(NV) - 1];
389 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
391 while (xnv < xnvend) {
392 *(NV**)xnv = (NV*)(xnv + 1);
406 PL_xrv_root = (XRV*)xrv->xrv_rv;
412 S_del_xrv(pTHX_ XRV *p)
415 p->xrv_rv = (SV*)PL_xrv_root;
424 register XRV* xrvend;
426 New(712, ptr, 1008/sizeof(XPV), XPV);
427 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
428 PL_xrv_arenaroot = ptr;
431 xrvend = &xrv[1008 / sizeof(XRV) - 1];
432 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
434 while (xrv < xrvend) {
435 xrv->xrv_rv = (SV*)(xrv + 1);
449 PL_xpv_root = (XPV*)xpv->xpv_pv;
455 S_del_xpv(pTHX_ XPV *p)
458 p->xpv_pv = (char*)PL_xpv_root;
467 register XPV* xpvend;
468 New(713, xpv, 1008/sizeof(XPV), XPV);
469 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
470 PL_xpv_arenaroot = xpv;
472 xpvend = &xpv[1008 / sizeof(XPV) - 1];
474 while (xpv < xpvend) {
475 xpv->xpv_pv = (char*)(xpv + 1);
488 xpviv = PL_xpviv_root;
489 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
495 S_del_xpviv(pTHX_ XPVIV *p)
498 p->xpv_pv = (char*)PL_xpviv_root;
506 register XPVIV* xpviv;
507 register XPVIV* xpvivend;
508 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
509 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
510 PL_xpviv_arenaroot = xpviv;
512 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
513 PL_xpviv_root = ++xpviv;
514 while (xpviv < xpvivend) {
515 xpviv->xpv_pv = (char*)(xpviv + 1);
528 xpvnv = PL_xpvnv_root;
529 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
535 S_del_xpvnv(pTHX_ XPVNV *p)
538 p->xpv_pv = (char*)PL_xpvnv_root;
546 register XPVNV* xpvnv;
547 register XPVNV* xpvnvend;
548 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
549 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
550 PL_xpvnv_arenaroot = xpvnv;
552 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
553 PL_xpvnv_root = ++xpvnv;
554 while (xpvnv < xpvnvend) {
555 xpvnv->xpv_pv = (char*)(xpvnv + 1);
568 xpvcv = PL_xpvcv_root;
569 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
575 S_del_xpvcv(pTHX_ XPVCV *p)
578 p->xpv_pv = (char*)PL_xpvcv_root;
586 register XPVCV* xpvcv;
587 register XPVCV* xpvcvend;
588 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
589 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
590 PL_xpvcv_arenaroot = xpvcv;
592 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
593 PL_xpvcv_root = ++xpvcv;
594 while (xpvcv < xpvcvend) {
595 xpvcv->xpv_pv = (char*)(xpvcv + 1);
608 xpvav = PL_xpvav_root;
609 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
615 S_del_xpvav(pTHX_ XPVAV *p)
618 p->xav_array = (char*)PL_xpvav_root;
626 register XPVAV* xpvav;
627 register XPVAV* xpvavend;
628 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
629 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
630 PL_xpvav_arenaroot = xpvav;
632 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
633 PL_xpvav_root = ++xpvav;
634 while (xpvav < xpvavend) {
635 xpvav->xav_array = (char*)(xpvav + 1);
638 xpvav->xav_array = 0;
648 xpvhv = PL_xpvhv_root;
649 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
655 S_del_xpvhv(pTHX_ XPVHV *p)
658 p->xhv_array = (char*)PL_xpvhv_root;
666 register XPVHV* xpvhv;
667 register XPVHV* xpvhvend;
668 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
669 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
670 PL_xpvhv_arenaroot = xpvhv;
672 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
673 PL_xpvhv_root = ++xpvhv;
674 while (xpvhv < xpvhvend) {
675 xpvhv->xhv_array = (char*)(xpvhv + 1);
678 xpvhv->xhv_array = 0;
688 xpvmg = PL_xpvmg_root;
689 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
695 S_del_xpvmg(pTHX_ XPVMG *p)
698 p->xpv_pv = (char*)PL_xpvmg_root;
706 register XPVMG* xpvmg;
707 register XPVMG* xpvmgend;
708 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
709 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
710 PL_xpvmg_arenaroot = xpvmg;
712 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
713 PL_xpvmg_root = ++xpvmg;
714 while (xpvmg < xpvmgend) {
715 xpvmg->xpv_pv = (char*)(xpvmg + 1);
728 xpvlv = PL_xpvlv_root;
729 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
735 S_del_xpvlv(pTHX_ XPVLV *p)
738 p->xpv_pv = (char*)PL_xpvlv_root;
746 register XPVLV* xpvlv;
747 register XPVLV* xpvlvend;
748 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
749 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
750 PL_xpvlv_arenaroot = xpvlv;
752 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
753 PL_xpvlv_root = ++xpvlv;
754 while (xpvlv < xpvlvend) {
755 xpvlv->xpv_pv = (char*)(xpvlv + 1);
768 xpvbm = PL_xpvbm_root;
769 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
775 S_del_xpvbm(pTHX_ XPVBM *p)
778 p->xpv_pv = (char*)PL_xpvbm_root;
786 register XPVBM* xpvbm;
787 register XPVBM* xpvbmend;
788 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
789 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
790 PL_xpvbm_arenaroot = xpvbm;
792 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
793 PL_xpvbm_root = ++xpvbm;
794 while (xpvbm < xpvbmend) {
795 xpvbm->xpv_pv = (char*)(xpvbm + 1);
802 # define my_safemalloc(s) (void*)safexmalloc(717,s)
803 # define my_safefree(p) safexfree((char*)p)
805 # define my_safemalloc(s) (void*)safemalloc(s)
806 # define my_safefree(p) safefree((char*)p)
811 #define new_XIV() my_safemalloc(sizeof(XPVIV))
812 #define del_XIV(p) my_safefree(p)
814 #define new_XNV() my_safemalloc(sizeof(XPVNV))
815 #define del_XNV(p) my_safefree(p)
817 #define new_XRV() my_safemalloc(sizeof(XRV))
818 #define del_XRV(p) my_safefree(p)
820 #define new_XPV() my_safemalloc(sizeof(XPV))
821 #define del_XPV(p) my_safefree(p)
823 #define new_XPVIV() my_safemalloc(sizeof(XPVIV))
824 #define del_XPVIV(p) my_safefree(p)
826 #define new_XPVNV() my_safemalloc(sizeof(XPVNV))
827 #define del_XPVNV(p) my_safefree(p)
829 #define new_XPVCV() my_safemalloc(sizeof(XPVCV))
830 #define del_XPVCV(p) my_safefree(p)
832 #define new_XPVAV() my_safemalloc(sizeof(XPVAV))
833 #define del_XPVAV(p) my_safefree(p)
835 #define new_XPVHV() my_safemalloc(sizeof(XPVHV))
836 #define del_XPVHV(p) my_safefree(p)
838 #define new_XPVMG() my_safemalloc(sizeof(XPVMG))
839 #define del_XPVMG(p) my_safefree(p)
841 #define new_XPVLV() my_safemalloc(sizeof(XPVLV))
842 #define del_XPVLV(p) my_safefree(p)
844 #define new_XPVBM() my_safemalloc(sizeof(XPVBM))
845 #define del_XPVBM(p) my_safefree(p)
849 #define new_XIV() (void*)new_xiv()
850 #define del_XIV(p) del_xiv((XPVIV*) p)
852 #define new_XNV() (void*)new_xnv()
853 #define del_XNV(p) del_xnv((XPVNV*) p)
855 #define new_XRV() (void*)new_xrv()
856 #define del_XRV(p) del_xrv((XRV*) p)
858 #define new_XPV() (void*)new_xpv()
859 #define del_XPV(p) del_xpv((XPV *)p)
861 #define new_XPVIV() (void*)new_xpviv()
862 #define del_XPVIV(p) del_xpviv((XPVIV *)p)
864 #define new_XPVNV() (void*)new_xpvnv()
865 #define del_XPVNV(p) del_xpvnv((XPVNV *)p)
867 #define new_XPVCV() (void*)new_xpvcv()
868 #define del_XPVCV(p) del_xpvcv((XPVCV *)p)
870 #define new_XPVAV() (void*)new_xpvav()
871 #define del_XPVAV(p) del_xpvav((XPVAV *)p)
873 #define new_XPVHV() (void*)new_xpvhv()
874 #define del_XPVHV(p) del_xpvhv((XPVHV *)p)
876 #define new_XPVMG() (void*)new_xpvmg()
877 #define del_XPVMG(p) del_xpvmg((XPVMG *)p)
879 #define new_XPVLV() (void*)new_xpvlv()
880 #define del_XPVLV(p) del_xpvlv((XPVLV *)p)
882 #define new_XPVBM() (void*)new_xpvbm()
883 #define del_XPVBM(p) del_xpvbm((XPVBM *)p)
887 #define new_XPVGV() my_safemalloc(sizeof(XPVGV))
888 #define del_XPVGV(p) my_safefree(p)
890 #define new_XPVFM() my_safemalloc(sizeof(XPVFM))
891 #define del_XPVFM(p) my_safefree(p)
893 #define new_XPVIO() my_safemalloc(sizeof(XPVIO))
894 #define del_XPVIO(p) my_safefree(p)
897 =for apidoc sv_upgrade
899 Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
906 Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
916 if (mt != SVt_PV && SvREADONLY(sv) && SvFAKE(sv)) {
920 if (SvTYPE(sv) == mt)
926 switch (SvTYPE(sv)) {
947 else if (mt < SVt_PVIV)
964 pv = (char*)SvRV(sv);
984 else if (mt == SVt_NV)
995 del_XPVIV(SvANY(sv));
1005 del_XPVNV(SvANY(sv));
1013 magic = SvMAGIC(sv);
1014 stash = SvSTASH(sv);
1015 del_XPVMG(SvANY(sv));
1018 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
1023 Perl_croak(aTHX_ "Can't upgrade to undef");
1025 SvANY(sv) = new_XIV();
1029 SvANY(sv) = new_XNV();
1033 SvANY(sv) = new_XRV();
1037 SvANY(sv) = new_XPV();
1043 SvANY(sv) = new_XPVIV();
1053 SvANY(sv) = new_XPVNV();
1061 SvANY(sv) = new_XPVMG();
1067 SvMAGIC(sv) = magic;
1068 SvSTASH(sv) = stash;
1071 SvANY(sv) = new_XPVLV();
1077 SvMAGIC(sv) = magic;
1078 SvSTASH(sv) = stash;
1085 SvANY(sv) = new_XPVAV();
1093 SvMAGIC(sv) = magic;
1094 SvSTASH(sv) = stash;
1100 SvANY(sv) = new_XPVHV();
1108 SvMAGIC(sv) = magic;
1109 SvSTASH(sv) = stash;
1116 SvANY(sv) = new_XPVCV();
1117 Zero(SvANY(sv), 1, XPVCV);
1123 SvMAGIC(sv) = magic;
1124 SvSTASH(sv) = stash;
1127 SvANY(sv) = new_XPVGV();
1133 SvMAGIC(sv) = magic;
1134 SvSTASH(sv) = stash;
1142 SvANY(sv) = new_XPVBM();
1148 SvMAGIC(sv) = magic;
1149 SvSTASH(sv) = stash;
1155 SvANY(sv) = new_XPVFM();
1156 Zero(SvANY(sv), 1, XPVFM);
1162 SvMAGIC(sv) = magic;
1163 SvSTASH(sv) = stash;
1166 SvANY(sv) = new_XPVIO();
1167 Zero(SvANY(sv), 1, XPVIO);
1173 SvMAGIC(sv) = magic;
1174 SvSTASH(sv) = stash;
1175 IoPAGE_LEN(sv) = 60;
1178 SvFLAGS(sv) &= ~SVTYPEMASK;
1184 Perl_sv_backoff(pTHX_ register SV *sv)
1188 char *s = SvPVX(sv);
1189 SvLEN(sv) += SvIVX(sv);
1190 SvPVX(sv) -= SvIVX(sv);
1192 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1194 SvFLAGS(sv) &= ~SVf_OOK;
1201 Expands the character buffer in the SV. This will use C<sv_unref> and will
1202 upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1209 Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
1213 #ifdef HAS_64K_LIMIT
1214 if (newlen >= 0x10000) {
1215 PerlIO_printf(Perl_debug_log,
1216 "Allocation too large: %"UVxf"\n", (UV)newlen);
1219 #endif /* HAS_64K_LIMIT */
1222 if (SvTYPE(sv) < SVt_PV) {
1223 sv_upgrade(sv, SVt_PV);
1226 else if (SvOOK(sv)) { /* pv is offset? */
1229 if (newlen > SvLEN(sv))
1230 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1231 #ifdef HAS_64K_LIMIT
1232 if (newlen >= 0x10000)
1238 if (newlen > SvLEN(sv)) { /* need more room? */
1239 if (SvLEN(sv) && s) {
1240 #if defined(MYMALLOC) && !defined(LEAKTEST)
1241 STRLEN l = malloced_size((void*)SvPVX(sv));
1247 Renew(s,newlen,char);
1250 New(703,s,newlen,char);
1252 SvLEN_set(sv, newlen);
1258 =for apidoc sv_setiv
1260 Copies an integer into the given SV. Does not handle 'set' magic. See
1267 Perl_sv_setiv(pTHX_ register SV *sv, IV i)
1269 SV_CHECK_THINKFIRST(sv);
1270 switch (SvTYPE(sv)) {
1272 sv_upgrade(sv, SVt_IV);
1275 sv_upgrade(sv, SVt_PVNV);
1279 sv_upgrade(sv, SVt_PVIV);
1290 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1291 PL_op_desc[PL_op->op_type]);
1294 (void)SvIOK_only(sv); /* validate number */
1300 =for apidoc sv_setiv_mg
1302 Like C<sv_setiv>, but also handles 'set' magic.
1308 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1315 =for apidoc sv_setuv
1317 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1324 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
1332 =for apidoc sv_setuv_mg
1334 Like C<sv_setuv>, but also handles 'set' magic.
1340 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1347 =for apidoc sv_setnv
1349 Copies a double into the given SV. Does not handle 'set' magic. See
1356 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1358 SV_CHECK_THINKFIRST(sv);
1359 switch (SvTYPE(sv)) {
1362 sv_upgrade(sv, SVt_NV);
1367 sv_upgrade(sv, SVt_PVNV);
1378 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1379 PL_op_name[PL_op->op_type]);
1383 (void)SvNOK_only(sv); /* validate number */
1388 =for apidoc sv_setnv_mg
1390 Like C<sv_setnv>, but also handles 'set' magic.
1396 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1403 S_not_a_number(pTHX_ SV *sv)
1409 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1410 /* each *s can expand to 4 chars + "...\0",
1411 i.e. need room for 8 chars */
1413 for (s = SvPVX(sv); *s && d < limit; s++) {
1415 if (ch & 128 && !isPRINT_LC(ch)) {
1424 else if (ch == '\r') {
1428 else if (ch == '\f') {
1432 else if (ch == '\\') {
1436 else if (isPRINT_LC(ch))
1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1453 PL_op_desc[PL_op->op_type]);
1455 Perl_warner(aTHX_ WARN_NUMERIC,
1456 "Argument \"%s\" isn't numeric", tmpbuf);
1459 /* the number can be converted to integer with atol() or atoll() */
1460 #define IS_NUMBER_TO_INT_BY_ATOL 0x01
1461 #define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1462 #define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1463 #define IS_NUMBER_NEG 0x08 /* not good to cache UV */
1464 #define IS_NUMBER_INFINITY 0x10 /* this is big */
1466 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1467 until proven guilty, assume that things are not that bad... */
1470 Perl_sv_2iv(pTHX_ register SV *sv)
1474 if (SvGMAGICAL(sv)) {
1479 return I_V(SvNVX(sv));
1481 if (SvPOKp(sv) && SvLEN(sv))
1484 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1486 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1492 if (SvTHINKFIRST(sv)) {
1495 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1496 (SvRV(tmpstr) != SvRV(sv)))
1497 return SvIV(tmpstr);
1498 return PTR2IV(SvRV(sv));
1500 if (SvREADONLY(sv) && SvFAKE(sv)) {
1501 sv_force_normal(sv);
1503 if (SvREADONLY(sv) && !SvOK(sv)) {
1505 if (ckWARN(WARN_UNINITIALIZED))
1512 return (IV)(SvUVX(sv));
1519 /* We can cache the IV/UV value even if it not good enough
1520 * to reconstruct NV, since the conversion to PV will prefer
1524 if (SvTYPE(sv) == SVt_NV)
1525 sv_upgrade(sv, SVt_PVNV);
1528 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1529 SvIVX(sv) = I_V(SvNVX(sv));
1531 SvUVX(sv) = U_V(SvNVX(sv));
1534 DEBUG_c(PerlIO_printf(Perl_debug_log,
1535 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1539 return (IV)SvUVX(sv);
1542 else if (SvPOKp(sv) && SvLEN(sv)) {
1543 I32 numtype = looks_like_number(sv);
1545 /* We want to avoid a possible problem when we cache an IV which
1546 may be later translated to an NV, and the resulting NV is not
1547 the translation of the initial data.
1549 This means that if we cache such an IV, we need to cache the
1550 NV as well. Moreover, we trade speed for space, and do not
1551 cache the NV if not needed.
1553 if (numtype & IS_NUMBER_NOT_IV) {
1554 /* May be not an integer. Need to cache NV if we cache IV
1555 * - otherwise future conversion to NV will be wrong. */
1558 d = Atof(SvPVX(sv));
1560 if (SvTYPE(sv) < SVt_PVNV)
1561 sv_upgrade(sv, SVt_PVNV);
1565 #if defined(USE_LONG_DOUBLE)
1566 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1567 PTR2UV(sv), SvNVX(sv)));
1569 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1570 PTR2UV(sv), SvNVX(sv)));
1572 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1573 SvIVX(sv) = I_V(SvNVX(sv));
1575 SvUVX(sv) = U_V(SvNVX(sv));
1580 else { /* The NV may be reconstructed from IV - safe to cache IV,
1581 which may be calculated by atol(). */
1582 if (SvTYPE(sv) < SVt_PVIV)
1583 sv_upgrade(sv, SVt_PVIV);
1585 SvIVX(sv) = Atol(SvPVX(sv));
1586 if (! numtype && ckWARN(WARN_NUMERIC))
1592 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1594 if (SvTYPE(sv) < SVt_IV)
1595 /* Typically the caller expects that sv_any is not NULL now. */
1596 sv_upgrade(sv, SVt_IV);
1599 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1600 PTR2UV(sv),SvIVX(sv)));
1601 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1605 Perl_sv_2uv(pTHX_ register SV *sv)
1609 if (SvGMAGICAL(sv)) {
1614 return U_V(SvNVX(sv));
1615 if (SvPOKp(sv) && SvLEN(sv))
1618 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1620 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1626 if (SvTHINKFIRST(sv)) {
1629 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1630 (SvRV(tmpstr) != SvRV(sv)))
1631 return SvUV(tmpstr);
1632 return PTR2UV(SvRV(sv));
1634 if (SvREADONLY(sv) && !SvOK(sv)) {
1636 if (ckWARN(WARN_UNINITIALIZED))
1646 return (UV)SvIVX(sv);
1650 /* We can cache the IV/UV value even if it not good enough
1651 * to reconstruct NV, since the conversion to PV will prefer
1654 if (SvTYPE(sv) == SVt_NV)
1655 sv_upgrade(sv, SVt_PVNV);
1657 if (SvNVX(sv) >= -0.5) {
1659 SvUVX(sv) = U_V(SvNVX(sv));
1662 SvIVX(sv) = I_V(SvNVX(sv));
1664 DEBUG_c(PerlIO_printf(Perl_debug_log,
1665 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1668 (IV)(UV)SvIVX(sv)));
1669 return (UV)SvIVX(sv);
1672 else if (SvPOKp(sv) && SvLEN(sv)) {
1673 I32 numtype = looks_like_number(sv);
1675 /* We want to avoid a possible problem when we cache a UV which
1676 may be later translated to an NV, and the resulting NV is not
1677 the translation of the initial data.
1679 This means that if we cache such a UV, we need to cache the
1680 NV as well. Moreover, we trade speed for space, and do not
1681 cache the NV if not needed.
1683 if (numtype & IS_NUMBER_NOT_IV) {
1684 /* May be not an integer. Need to cache NV if we cache IV
1685 * - otherwise future conversion to NV will be wrong. */
1688 d = Atof(SvPVX(sv));
1690 if (SvTYPE(sv) < SVt_PVNV)
1691 sv_upgrade(sv, SVt_PVNV);
1695 #if defined(USE_LONG_DOUBLE)
1696 DEBUG_c(PerlIO_printf(Perl_debug_log,
1697 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1698 PTR2UV(sv), SvNVX(sv)));
1700 DEBUG_c(PerlIO_printf(Perl_debug_log,
1701 "0x%"UVxf" 2nv(%g)\n",
1702 PTR2UV(sv), SvNVX(sv)));
1704 if (SvNVX(sv) < -0.5) {
1705 SvIVX(sv) = I_V(SvNVX(sv));
1708 SvUVX(sv) = U_V(SvNVX(sv));
1712 else if (numtype & IS_NUMBER_NEG) {
1713 /* The NV may be reconstructed from IV - safe to cache IV,
1714 which may be calculated by atol(). */
1715 if (SvTYPE(sv) == SVt_PV)
1716 sv_upgrade(sv, SVt_PVIV);
1718 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1720 else if (numtype) { /* Non-negative */
1721 /* The NV may be reconstructed from UV - safe to cache UV,
1722 which may be calculated by strtoul()/atol. */
1723 if (SvTYPE(sv) == SVt_PV)
1724 sv_upgrade(sv, SVt_PVIV);
1726 (void)SvIsUV_on(sv);
1728 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1729 #else /* no atou(), but we know the number fits into IV... */
1730 /* The only problem may be if it is negative... */
1731 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1734 else { /* Not a number. Cache 0. */
1737 if (SvTYPE(sv) < SVt_PVIV)
1738 sv_upgrade(sv, SVt_PVIV);
1740 (void)SvIsUV_on(sv);
1741 SvUVX(sv) = 0; /* We assume that 0s have the
1742 same bitmap in IV and UV. */
1743 if (ckWARN(WARN_NUMERIC))
1748 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1750 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1753 if (SvTYPE(sv) < SVt_IV)
1754 /* Typically the caller expects that sv_any is not NULL now. */
1755 sv_upgrade(sv, SVt_IV);
1759 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1760 PTR2UV(sv),SvUVX(sv)));
1761 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1765 Perl_sv_2nv(pTHX_ register SV *sv)
1769 if (SvGMAGICAL(sv)) {
1773 if (SvPOKp(sv) && SvLEN(sv)) {
1775 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1777 return Atof(SvPVX(sv));
1781 return (NV)SvUVX(sv);
1783 return (NV)SvIVX(sv);
1786 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1788 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1794 if (SvTHINKFIRST(sv)) {
1797 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1798 (SvRV(tmpstr) != SvRV(sv)))
1799 return SvNV(tmpstr);
1800 return PTR2NV(SvRV(sv));
1802 if (SvREADONLY(sv) && !SvOK(sv)) {
1804 if (ckWARN(WARN_UNINITIALIZED))
1809 if (SvTYPE(sv) < SVt_NV) {
1810 if (SvTYPE(sv) == SVt_IV)
1811 sv_upgrade(sv, SVt_PVNV);
1813 sv_upgrade(sv, SVt_NV);
1814 #if defined(USE_LONG_DOUBLE)
1816 STORE_NUMERIC_LOCAL_SET_STANDARD();
1817 PerlIO_printf(Perl_debug_log,
1818 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1819 PTR2UV(sv), SvNVX(sv));
1820 RESTORE_NUMERIC_LOCAL();
1824 STORE_NUMERIC_LOCAL_SET_STANDARD();
1825 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1826 PTR2UV(sv), SvNVX(sv));
1827 RESTORE_NUMERIC_LOCAL();
1831 else if (SvTYPE(sv) < SVt_PVNV)
1832 sv_upgrade(sv, SVt_PVNV);
1834 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1836 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1838 else if (SvPOKp(sv) && SvLEN(sv)) {
1840 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1842 SvNVX(sv) = Atof(SvPVX(sv));
1846 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1848 if (SvTYPE(sv) < SVt_NV)
1849 /* Typically the caller expects that sv_any is not NULL now. */
1850 sv_upgrade(sv, SVt_NV);
1854 #if defined(USE_LONG_DOUBLE)
1856 STORE_NUMERIC_LOCAL_SET_STANDARD();
1857 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1858 PTR2UV(sv), SvNVX(sv));
1859 RESTORE_NUMERIC_LOCAL();
1863 STORE_NUMERIC_LOCAL_SET_STANDARD();
1864 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1865 PTR2UV(sv), SvNVX(sv));
1866 RESTORE_NUMERIC_LOCAL();
1873 S_asIV(pTHX_ SV *sv)
1875 I32 numtype = looks_like_number(sv);
1878 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1879 return Atol(SvPVX(sv));
1882 if (ckWARN(WARN_NUMERIC))
1885 d = Atof(SvPVX(sv));
1890 S_asUV(pTHX_ SV *sv)
1892 I32 numtype = looks_like_number(sv);
1895 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1896 return Strtoul(SvPVX(sv), Null(char**), 10);
1900 if (ckWARN(WARN_NUMERIC))
1903 return U_V(Atof(SvPVX(sv)));
1907 * Returns a combination of (advisory only - can get false negatives)
1908 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1910 * 0 if does not look like number.
1912 * In fact possible values are 0 and
1913 * IS_NUMBER_TO_INT_BY_ATOL 123
1914 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1915 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1916 * IS_NUMBER_INFINITY
1917 * with a possible addition of IS_NUMBER_NEG.
1921 =for apidoc looks_like_number
1923 Test if an the content of an SV looks like a number (or is a
1930 Perl_looks_like_number(pTHX_ SV *sv)
1933 register char *send;
1934 register char *sbegin;
1935 register char *nbegin;
1944 else if (SvPOKp(sv))
1945 sbegin = SvPV(sv, len);
1948 send = sbegin + len;
1955 numtype = IS_NUMBER_NEG;
1962 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1963 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1967 /* next must be digit or the radix separator or beginning of infinity */
1971 } while (isDIGIT(*s));
1973 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1974 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1976 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1979 #ifdef USE_LOCALE_NUMERIC
1980 || IS_NUMERIC_RADIX(*s)
1984 numtype |= IS_NUMBER_NOT_IV;
1985 while (isDIGIT(*s)) /* optional digits after the radix */
1990 #ifdef USE_LOCALE_NUMERIC
1991 || IS_NUMERIC_RADIX(*s)
1995 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1996 /* no digits before the radix means we need digits after it */
2000 } while (isDIGIT(*s));
2005 else if (*s == 'I' || *s == 'i') {
2006 s++; if (*s != 'N' && *s != 'n') return 0;
2007 s++; if (*s != 'F' && *s != 'f') return 0;
2008 s++; if (*s == 'I' || *s == 'i') {
2009 s++; if (*s != 'N' && *s != 'n') return 0;
2010 s++; if (*s != 'I' && *s != 'i') return 0;
2011 s++; if (*s != 'T' && *s != 't') return 0;
2012 s++; if (*s != 'Y' && *s != 'y') return 0;
2020 numtype = IS_NUMBER_INFINITY;
2022 /* we can have an optional exponent part */
2023 if (*s == 'e' || *s == 'E') {
2024 numtype &= ~IS_NUMBER_NEG;
2025 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2027 if (*s == '+' || *s == '-')
2032 } while (isDIGIT(*s));
2042 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2043 return IS_NUMBER_TO_INT_BY_ATOL;
2048 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2051 return sv_2pv(sv, &n_a);
2054 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2056 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2058 char *ptr = buf + TYPE_CHARS(UV);
2072 *--ptr = '0' + (uv % 10);
2081 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2086 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2087 char *tmpbuf = tbuf;
2093 if (SvGMAGICAL(sv)) {
2101 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2103 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2108 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2113 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2115 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2122 if (SvTHINKFIRST(sv)) {
2125 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2126 (SvRV(tmpstr) != SvRV(sv)))
2127 return SvPV(tmpstr,*lp);
2134 switch (SvTYPE(sv)) {
2136 if ( ((SvFLAGS(sv) &
2137 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2138 == (SVs_OBJECT|SVs_RMG))
2139 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2140 && (mg = mg_find(sv, 'r'))) {
2142 regexp *re = (regexp *)mg->mg_obj;
2145 char *fptr = "msix";
2150 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2152 while((ch = *fptr++)) {
2154 reflags[left++] = ch;
2157 reflags[right--] = ch;
2162 reflags[left] = '-';
2166 mg->mg_len = re->prelen + 4 + left;
2167 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2168 Copy("(?", mg->mg_ptr, 2, char);
2169 Copy(reflags, mg->mg_ptr+2, left, char);
2170 Copy(":", mg->mg_ptr+left+2, 1, char);
2171 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2172 mg->mg_ptr[mg->mg_len - 1] = ')';
2173 mg->mg_ptr[mg->mg_len] = 0;
2175 PL_reginterp_cnt += re->program[0].next_off;
2187 case SVt_PVBM: if (SvROK(sv))
2190 s = "SCALAR"; break;
2191 case SVt_PVLV: s = "LVALUE"; break;
2192 case SVt_PVAV: s = "ARRAY"; break;
2193 case SVt_PVHV: s = "HASH"; break;
2194 case SVt_PVCV: s = "CODE"; break;
2195 case SVt_PVGV: s = "GLOB"; break;
2196 case SVt_PVFM: s = "FORMAT"; break;
2197 case SVt_PVIO: s = "IO"; break;
2198 default: s = "UNKNOWN"; break;
2202 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2205 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2211 if (SvREADONLY(sv) && !SvOK(sv)) {
2213 if (ckWARN(WARN_UNINITIALIZED))
2219 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2220 /* XXXX 64-bit? IV may have better precision... */
2221 /* I tried changing this to be 64-bit-aware and
2222 * the t/op/numconvert.t became very, very, angry.
2224 if (SvTYPE(sv) < SVt_PVNV)
2225 sv_upgrade(sv, SVt_PVNV);
2226 /* The +20 is pure guesswork. Configure test needed. --jhi */
2227 SvGROW(sv, NV_DIG + 20);
2229 olderrno = errno; /* some Xenix systems wipe out errno here */
2231 if (SvNVX(sv) == 0.0)
2232 (void)strcpy(s,"0");
2236 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2239 #ifdef FIXNEGATIVEZERO
2240 if (*s == '-' && s[1] == '0' && !s[2])
2249 else if (SvIOKp(sv)) {
2250 U32 isIOK = SvIOK(sv);
2251 U32 isUIOK = SvIsUV(sv);
2252 char buf[TYPE_CHARS(UV)];
2255 if (SvTYPE(sv) < SVt_PVIV)
2256 sv_upgrade(sv, SVt_PVIV);
2258 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2260 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2261 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2262 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2263 SvCUR_set(sv, ebuf - ptr);
2276 if (ckWARN(WARN_UNINITIALIZED)
2277 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2282 if (SvTYPE(sv) < SVt_PV)
2283 /* Typically the caller expects that sv_any is not NULL now. */
2284 sv_upgrade(sv, SVt_PV);
2287 *lp = s - SvPVX(sv);
2290 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2291 PTR2UV(sv),SvPVX(sv)));
2295 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2296 /* Sneaky stuff here */
2300 tsv = newSVpv(tmpbuf, 0);
2316 len = strlen(tmpbuf);
2318 #ifdef FIXNEGATIVEZERO
2319 if (len == 2 && t[0] == '-' && t[1] == '0') {
2324 (void)SvUPGRADE(sv, SVt_PV);
2326 s = SvGROW(sv, len + 1);
2335 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2338 return sv_2pvbyte(sv, &n_a);
2342 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2344 return sv_2pv(sv,lp);
2348 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2351 return sv_2pvutf8(sv, &n_a);
2355 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2357 sv_utf8_upgrade(sv);
2358 return sv_2pv(sv,lp);
2361 /* This function is only called on magical items */
2363 Perl_sv_2bool(pTHX_ register SV *sv)
2373 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2374 (SvRV(tmpsv) != SvRV(sv)))
2375 return SvTRUE(tmpsv);
2376 return SvRV(sv) != 0;
2379 register XPV* Xpvtmp;
2380 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2381 (*Xpvtmp->xpv_pv > '0' ||
2382 Xpvtmp->xpv_cur > 1 ||
2383 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2390 return SvIVX(sv) != 0;
2393 return SvNVX(sv) != 0.0;
2401 =for apidoc sv_utf8_upgrade
2403 Convert the PV of an SV to its UTF8-encoded form.
2409 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2414 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2417 /* This function could be much more efficient if we had a FLAG in SVs
2418 * to signal if there are any hibit chars in the PV.
2420 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2425 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2426 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2427 SvCUR(sv) = len - 1;
2428 SvLEN(sv) = len; /* No longer know the real size. */
2430 Safefree(s); /* No longer using what was there before. */
2435 =for apidoc sv_utf8_downgrade
2437 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2438 This may not be possible if the PV contains non-byte encoding characters;
2439 if this is the case, either returns false or, if C<fail_ok> is not
2446 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2448 if (SvPOK(sv) && SvUTF8(sv)) {
2449 char *c = SvPVX(sv);
2450 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
2451 if (!utf8_to_bytes((U8*)c, &len)) {
2456 Perl_croak(aTHX_ "Wide character in %s",
2457 PL_op_desc[PL_op->op_type]);
2459 Perl_croak(aTHX_ "Wide character");
2462 SvCUR(sv) = len - 1;
2469 =for apidoc sv_utf8_encode
2471 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2472 flag so that it looks like bytes again. Nothing calls this.
2478 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2480 sv_utf8_upgrade(sv);
2485 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2489 bool has_utf = FALSE;
2490 if (!sv_utf8_downgrade(sv, TRUE))
2493 /* it is actually just a matter of turning the utf8 flag on, but
2494 * we want to make sure everything inside is valid utf8 first.
2497 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2500 while (c < SvEND(sv)) {
2511 /* Note: sv_setsv() should not be called with a source string that needs
2512 * to be reused, since it may destroy the source string if it is marked
2517 =for apidoc sv_setsv
2519 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2520 The source SV may be destroyed if it is mortal. Does not handle 'set'
2521 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2528 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2531 register U32 sflags;
2537 SV_CHECK_THINKFIRST(dstr);
2539 sstr = &PL_sv_undef;
2540 stype = SvTYPE(sstr);
2541 dtype = SvTYPE(dstr);
2545 /* There's a lot of redundancy below but we're going for speed here */
2550 if (dtype != SVt_PVGV) {
2551 (void)SvOK_off(dstr);
2559 sv_upgrade(dstr, SVt_IV);
2562 sv_upgrade(dstr, SVt_PVNV);
2566 sv_upgrade(dstr, SVt_PVIV);
2569 (void)SvIOK_only(dstr);
2570 SvIVX(dstr) = SvIVX(sstr);
2573 if (SvTAINTED(sstr))
2584 sv_upgrade(dstr, SVt_NV);
2589 sv_upgrade(dstr, SVt_PVNV);
2592 SvNVX(dstr) = SvNVX(sstr);
2593 (void)SvNOK_only(dstr);
2594 if (SvTAINTED(sstr))
2602 sv_upgrade(dstr, SVt_RV);
2603 else if (dtype == SVt_PVGV &&
2604 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2607 if (GvIMPORTED(dstr) != GVf_IMPORTED
2608 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2610 GvIMPORTED_on(dstr);
2621 sv_upgrade(dstr, SVt_PV);
2624 if (dtype < SVt_PVIV)
2625 sv_upgrade(dstr, SVt_PVIV);
2628 if (dtype < SVt_PVNV)
2629 sv_upgrade(dstr, SVt_PVNV);
2636 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2637 PL_op_name[PL_op->op_type]);
2639 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2643 if (dtype <= SVt_PVGV) {
2645 if (dtype != SVt_PVGV) {
2646 char *name = GvNAME(sstr);
2647 STRLEN len = GvNAMELEN(sstr);
2648 sv_upgrade(dstr, SVt_PVGV);
2649 sv_magic(dstr, dstr, '*', Nullch, 0);
2650 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2651 GvNAME(dstr) = savepvn(name, len);
2652 GvNAMELEN(dstr) = len;
2653 SvFAKE_on(dstr); /* can coerce to non-glob */
2655 /* ahem, death to those who redefine active sort subs */
2656 else if (PL_curstackinfo->si_type == PERLSI_SORT
2657 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2658 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2660 (void)SvOK_off(dstr);
2661 GvINTRO_off(dstr); /* one-shot flag */
2663 GvGP(dstr) = gp_ref(GvGP(sstr));
2664 if (SvTAINTED(sstr))
2666 if (GvIMPORTED(dstr) != GVf_IMPORTED
2667 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2669 GvIMPORTED_on(dstr);
2677 if (SvGMAGICAL(sstr)) {
2679 if (SvTYPE(sstr) != stype) {
2680 stype = SvTYPE(sstr);
2681 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2685 if (stype == SVt_PVLV)
2686 (void)SvUPGRADE(dstr, SVt_PVNV);
2688 (void)SvUPGRADE(dstr, stype);
2691 sflags = SvFLAGS(sstr);
2693 if (sflags & SVf_ROK) {
2694 if (dtype >= SVt_PV) {
2695 if (dtype == SVt_PVGV) {
2696 SV *sref = SvREFCNT_inc(SvRV(sstr));
2698 int intro = GvINTRO(dstr);
2703 GvINTRO_off(dstr); /* one-shot flag */
2704 Newz(602,gp, 1, GP);
2705 GvGP(dstr) = gp_ref(gp);
2706 GvSV(dstr) = NEWSV(72,0);
2707 GvLINE(dstr) = CopLINE(PL_curcop);
2708 GvEGV(dstr) = (GV*)dstr;
2711 switch (SvTYPE(sref)) {
2714 SAVESPTR(GvAV(dstr));
2716 dref = (SV*)GvAV(dstr);
2717 GvAV(dstr) = (AV*)sref;
2718 if (!GvIMPORTED_AV(dstr)
2719 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2721 GvIMPORTED_AV_on(dstr);
2726 SAVESPTR(GvHV(dstr));
2728 dref = (SV*)GvHV(dstr);
2729 GvHV(dstr) = (HV*)sref;
2730 if (!GvIMPORTED_HV(dstr)
2731 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2733 GvIMPORTED_HV_on(dstr);
2738 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2739 SvREFCNT_dec(GvCV(dstr));
2740 GvCV(dstr) = Nullcv;
2741 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2742 PL_sub_generation++;
2744 SAVESPTR(GvCV(dstr));
2747 dref = (SV*)GvCV(dstr);
2748 if (GvCV(dstr) != (CV*)sref) {
2749 CV* cv = GvCV(dstr);
2751 if (!GvCVGEN((GV*)dstr) &&
2752 (CvROOT(cv) || CvXSUB(cv)))
2755 /* ahem, death to those who redefine
2756 * active sort subs */
2757 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2758 PL_sortcop == CvSTART(cv))
2760 "Can't redefine active sort subroutine %s",
2761 GvENAME((GV*)dstr));
2762 /* Redefining a sub - warning is mandatory if
2763 it was a const and its value changed. */
2764 if (ckWARN(WARN_REDEFINE)
2766 && (!CvCONST((CV*)sref)
2767 || sv_cmp(cv_const_sv(cv),
2768 cv_const_sv((CV*)sref)))))
2770 Perl_warner(aTHX_ WARN_REDEFINE,
2772 ? "Constant subroutine %s redefined"
2773 : "Subroutine %s redefined",
2774 GvENAME((GV*)dstr));
2777 cv_ckproto(cv, (GV*)dstr,
2778 SvPOK(sref) ? SvPVX(sref) : Nullch);
2780 GvCV(dstr) = (CV*)sref;
2781 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2782 GvASSUMECV_on(dstr);
2783 PL_sub_generation++;
2785 if (!GvIMPORTED_CV(dstr)
2786 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2788 GvIMPORTED_CV_on(dstr);
2793 SAVESPTR(GvIOp(dstr));
2795 dref = (SV*)GvIOp(dstr);
2796 GvIOp(dstr) = (IO*)sref;
2800 SAVESPTR(GvFORM(dstr));
2802 dref = (SV*)GvFORM(dstr);
2803 GvFORM(dstr) = (CV*)sref;
2807 SAVESPTR(GvSV(dstr));
2809 dref = (SV*)GvSV(dstr);
2811 if (!GvIMPORTED_SV(dstr)
2812 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2814 GvIMPORTED_SV_on(dstr);
2822 if (SvTAINTED(sstr))
2827 (void)SvOOK_off(dstr); /* backoff */
2829 Safefree(SvPVX(dstr));
2830 SvLEN(dstr)=SvCUR(dstr)=0;
2833 (void)SvOK_off(dstr);
2834 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2836 if (sflags & SVp_NOK) {
2838 SvNVX(dstr) = SvNVX(sstr);
2840 if (sflags & SVp_IOK) {
2841 (void)SvIOK_on(dstr);
2842 SvIVX(dstr) = SvIVX(sstr);
2843 if (sflags & SVf_IVisUV)
2846 if (SvAMAGIC(sstr)) {
2850 else if (sflags & SVp_POK) {
2853 * Check to see if we can just swipe the string. If so, it's a
2854 * possible small lose on short strings, but a big win on long ones.
2855 * It might even be a win on short strings if SvPVX(dstr)
2856 * has to be allocated and SvPVX(sstr) has to be freed.
2859 if (SvTEMP(sstr) && /* slated for free anyway? */
2860 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2861 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2862 SvLEN(sstr)) /* and really is a string */
2864 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2866 SvFLAGS(dstr) &= ~SVf_OOK;
2867 Safefree(SvPVX(dstr) - SvIVX(dstr));
2869 else if (SvLEN(dstr))
2870 Safefree(SvPVX(dstr));
2872 (void)SvPOK_only(dstr);
2873 SvPV_set(dstr, SvPVX(sstr));
2874 SvLEN_set(dstr, SvLEN(sstr));
2875 SvCUR_set(dstr, SvCUR(sstr));
2878 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2879 SvPV_set(sstr, Nullch);
2884 else { /* have to copy actual string */
2885 STRLEN len = SvCUR(sstr);
2887 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2888 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2889 SvCUR_set(dstr, len);
2890 *SvEND(dstr) = '\0';
2891 (void)SvPOK_only(dstr);
2893 if ((sflags & SVf_UTF8) && !IN_BYTE)
2896 if (sflags & SVp_NOK) {
2898 SvNVX(dstr) = SvNVX(sstr);
2900 if (sflags & SVp_IOK) {
2901 (void)SvIOK_on(dstr);
2902 SvIVX(dstr) = SvIVX(sstr);
2903 if (sflags & SVf_IVisUV)
2907 else if (sflags & SVp_NOK) {
2908 SvNVX(dstr) = SvNVX(sstr);
2909 (void)SvNOK_only(dstr);
2910 if (sflags & SVf_IOK) {
2911 (void)SvIOK_on(dstr);
2912 SvIVX(dstr) = SvIVX(sstr);
2913 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2914 if (sflags & SVf_IVisUV)
2918 else if (sflags & SVp_IOK) {
2919 (void)SvIOK_only(dstr);
2920 SvIVX(dstr) = SvIVX(sstr);
2921 if (sflags & SVf_IVisUV)
2925 if (dtype == SVt_PVGV) {
2926 if (ckWARN(WARN_MISC))
2927 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2930 (void)SvOK_off(dstr);
2932 if (SvTAINTED(sstr))
2937 =for apidoc sv_setsv_mg
2939 Like C<sv_setsv>, but also handles 'set' magic.
2945 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2947 sv_setsv(dstr,sstr);
2952 =for apidoc sv_setpvn
2954 Copies a string into an SV. The C<len> parameter indicates the number of
2955 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2961 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2963 register char *dptr;
2965 /* len is STRLEN which is unsigned, need to copy to signed */
2969 SV_CHECK_THINKFIRST(sv);
2974 (void)SvUPGRADE(sv, SVt_PV);
2976 SvGROW(sv, len + 1);
2978 Move(ptr,dptr,len,char);
2981 (void)SvPOK_only(sv); /* validate pointer */
2986 =for apidoc sv_setpvn_mg
2988 Like C<sv_setpvn>, but also handles 'set' magic.
2994 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2996 sv_setpvn(sv,ptr,len);
3001 =for apidoc sv_setpv
3003 Copies a string into an SV. The string must be null-terminated. Does not
3004 handle 'set' magic. See C<sv_setpv_mg>.
3010 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3012 register STRLEN len;
3014 SV_CHECK_THINKFIRST(sv);
3020 (void)SvUPGRADE(sv, SVt_PV);
3022 SvGROW(sv, len + 1);
3023 Move(ptr,SvPVX(sv),len+1,char);
3025 (void)SvPOK_only(sv); /* validate pointer */
3030 =for apidoc sv_setpv_mg
3032 Like C<sv_setpv>, but also handles 'set' magic.
3038 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3045 =for apidoc sv_usepvn
3047 Tells an SV to use C<ptr> to find its string value. Normally the string is
3048 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3049 The C<ptr> should point to memory that was allocated by C<malloc>. The
3050 string length, C<len>, must be supplied. This function will realloc the
3051 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3052 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3053 See C<sv_usepvn_mg>.
3059 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3061 SV_CHECK_THINKFIRST(sv);
3062 (void)SvUPGRADE(sv, SVt_PV);
3067 (void)SvOOK_off(sv);
3068 if (SvPVX(sv) && SvLEN(sv))
3069 Safefree(SvPVX(sv));
3070 Renew(ptr, len+1, char);
3073 SvLEN_set(sv, len+1);
3075 (void)SvPOK_only(sv); /* validate pointer */
3080 =for apidoc sv_usepvn_mg
3082 Like C<sv_usepvn>, but also handles 'set' magic.
3088 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3090 sv_usepvn(sv,ptr,len);
3095 Perl_sv_force_normal(pTHX_ register SV *sv)
3097 if (SvREADONLY(sv)) {
3100 char *pvx = SvPVX(sv);
3101 STRLEN len = SvCUR(sv);
3102 U32 hash = SvUVX(sv);
3103 SvGROW(sv, len + 1);
3104 Move(pvx,SvPVX(sv),len,char);
3108 unsharepvn(pvx,len,hash);
3110 else if (PL_curcop != &PL_compiling)
3111 Perl_croak(aTHX_ PL_no_modify);
3115 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3122 Efficient removal of characters from the beginning of the string buffer.
3123 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3124 the string buffer. The C<ptr> becomes the first character of the adjusted
3131 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3135 register STRLEN delta;
3137 if (!ptr || !SvPOKp(sv))
3139 SV_CHECK_THINKFIRST(sv);
3140 if (SvTYPE(sv) < SVt_PVIV)
3141 sv_upgrade(sv,SVt_PVIV);
3144 if (!SvLEN(sv)) { /* make copy of shared string */
3145 char *pvx = SvPVX(sv);
3146 STRLEN len = SvCUR(sv);
3147 SvGROW(sv, len + 1);
3148 Move(pvx,SvPVX(sv),len,char);
3152 SvFLAGS(sv) |= SVf_OOK;
3154 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3155 delta = ptr - SvPVX(sv);
3163 =for apidoc sv_catpvn
3165 Concatenates the string onto the end of the string which is in the SV. The
3166 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3167 'set' magic. See C<sv_catpvn_mg>.
3173 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3178 junk = SvPV_force(sv, tlen);
3179 SvGROW(sv, tlen + len + 1);
3182 Move(ptr,SvPVX(sv)+tlen,len,char);
3185 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3190 =for apidoc sv_catpvn_mg
3192 Like C<sv_catpvn>, but also handles 'set' magic.
3198 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3200 sv_catpvn(sv,ptr,len);
3205 =for apidoc sv_catsv
3207 Concatenates the string from SV C<ssv> onto the end of the string in SV
3208 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3214 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3220 if ((s = SvPV(sstr, len))) {
3221 if (DO_UTF8(sstr)) {
3222 sv_utf8_upgrade(dstr);
3223 sv_catpvn(dstr,s,len);
3227 sv_catpvn(dstr,s,len);
3232 =for apidoc sv_catsv_mg
3234 Like C<sv_catsv>, but also handles 'set' magic.
3240 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3242 sv_catsv(dstr,sstr);
3247 =for apidoc sv_catpv
3249 Concatenates the string onto the end of the string which is in the SV.
3250 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3256 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3258 register STRLEN len;
3264 junk = SvPV_force(sv, tlen);
3266 SvGROW(sv, tlen + len + 1);
3269 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3271 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3276 =for apidoc sv_catpv_mg
3278 Like C<sv_catpv>, but also handles 'set' magic.
3284 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3291 Perl_newSV(pTHX_ STRLEN len)
3297 sv_upgrade(sv, SVt_PV);
3298 SvGROW(sv, len + 1);
3303 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3306 =for apidoc sv_magic
3308 Adds magic to an SV.
3314 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3318 if (SvREADONLY(sv)) {
3320 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3321 Perl_croak(aTHX_ PL_no_modify);
3323 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3324 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3331 (void)SvUPGRADE(sv, SVt_PVMG);
3333 Newz(702,mg, 1, MAGIC);
3334 mg->mg_moremagic = SvMAGIC(sv);
3337 if (!obj || obj == sv || how == '#' || how == 'r')
3341 mg->mg_obj = SvREFCNT_inc(obj);
3342 mg->mg_flags |= MGf_REFCOUNTED;
3345 mg->mg_len = namlen;
3348 mg->mg_ptr = savepvn(name, namlen);
3349 else if (namlen == HEf_SVKEY)
3350 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3354 mg->mg_virtual = &PL_vtbl_sv;
3357 mg->mg_virtual = &PL_vtbl_amagic;
3360 mg->mg_virtual = &PL_vtbl_amagicelem;
3366 mg->mg_virtual = &PL_vtbl_bm;
3369 mg->mg_virtual = &PL_vtbl_regdata;
3372 mg->mg_virtual = &PL_vtbl_regdatum;
3375 mg->mg_virtual = &PL_vtbl_env;
3378 mg->mg_virtual = &PL_vtbl_fm;
3381 mg->mg_virtual = &PL_vtbl_envelem;
3384 mg->mg_virtual = &PL_vtbl_mglob;
3387 mg->mg_virtual = &PL_vtbl_isa;
3390 mg->mg_virtual = &PL_vtbl_isaelem;
3393 mg->mg_virtual = &PL_vtbl_nkeys;
3400 mg->mg_virtual = &PL_vtbl_dbline;
3404 mg->mg_virtual = &PL_vtbl_mutex;
3406 #endif /* USE_THREADS */
3407 #ifdef USE_LOCALE_COLLATE
3409 mg->mg_virtual = &PL_vtbl_collxfrm;
3411 #endif /* USE_LOCALE_COLLATE */
3413 mg->mg_virtual = &PL_vtbl_pack;
3417 mg->mg_virtual = &PL_vtbl_packelem;
3420 mg->mg_virtual = &PL_vtbl_regexp;
3423 mg->mg_virtual = &PL_vtbl_sig;
3426 mg->mg_virtual = &PL_vtbl_sigelem;
3429 mg->mg_virtual = &PL_vtbl_taint;
3433 mg->mg_virtual = &PL_vtbl_uvar;
3436 mg->mg_virtual = &PL_vtbl_vec;
3439 mg->mg_virtual = &PL_vtbl_substr;
3442 mg->mg_virtual = &PL_vtbl_defelem;
3445 mg->mg_virtual = &PL_vtbl_glob;
3448 mg->mg_virtual = &PL_vtbl_arylen;
3451 mg->mg_virtual = &PL_vtbl_pos;
3454 mg->mg_virtual = &PL_vtbl_backref;
3456 case '~': /* Reserved for use by extensions not perl internals. */
3457 /* Useful for attaching extension internal data to perl vars. */
3458 /* Note that multiple extensions may clash if magical scalars */
3459 /* etc holding private data from one are passed to another. */
3463 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3467 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3471 =for apidoc sv_unmagic
3473 Removes magic from an SV.
3479 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3483 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3486 for (mg = *mgp; mg; mg = *mgp) {
3487 if (mg->mg_type == type) {
3488 MGVTBL* vtbl = mg->mg_virtual;
3489 *mgp = mg->mg_moremagic;
3490 if (vtbl && vtbl->svt_free)
3491 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3492 if (mg->mg_ptr && mg->mg_type != 'g')
3493 if (mg->mg_len >= 0)
3494 Safefree(mg->mg_ptr);
3495 else if (mg->mg_len == HEf_SVKEY)
3496 SvREFCNT_dec((SV*)mg->mg_ptr);
3497 if (mg->mg_flags & MGf_REFCOUNTED)
3498 SvREFCNT_dec(mg->mg_obj);
3502 mgp = &mg->mg_moremagic;
3506 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3513 =for apidoc sv_rvweaken
3521 Perl_sv_rvweaken(pTHX_ SV *sv)
3524 if (!SvOK(sv)) /* let undefs pass */
3527 Perl_croak(aTHX_ "Can't weaken a nonreference");
3528 else if (SvWEAKREF(sv)) {
3530 if (ckWARN(WARN_MISC))
3531 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3535 sv_add_backref(tsv, sv);
3542 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3546 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3547 av = (AV*)mg->mg_obj;
3550 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3551 SvREFCNT_dec(av); /* for sv_magic */
3557 S_sv_del_backref(pTHX_ SV *sv)
3564 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3565 Perl_croak(aTHX_ "panic: del_backref");
3566 av = (AV *)mg->mg_obj;
3571 svp[i] = &PL_sv_undef; /* XXX */
3578 =for apidoc sv_insert
3580 Inserts a string at the specified offset/length within the SV. Similar to
3581 the Perl substr() function.
3587 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3591 register char *midend;
3592 register char *bigend;
3598 Perl_croak(aTHX_ "Can't modify non-existent substring");
3599 SvPV_force(bigstr, curlen);
3600 (void)SvPOK_only_UTF8(bigstr);
3601 if (offset + len > curlen) {
3602 SvGROW(bigstr, offset+len+1);
3603 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3604 SvCUR_set(bigstr, offset+len);
3608 i = littlelen - len;
3609 if (i > 0) { /* string might grow */
3610 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3611 mid = big + offset + len;
3612 midend = bigend = big + SvCUR(bigstr);
3615 while (midend > mid) /* shove everything down */
3616 *--bigend = *--midend;
3617 Move(little,big+offset,littlelen,char);
3623 Move(little,SvPVX(bigstr)+offset,len,char);
3628 big = SvPVX(bigstr);
3631 bigend = big + SvCUR(bigstr);
3633 if (midend > bigend)
3634 Perl_croak(aTHX_ "panic: sv_insert");
3636 if (mid - big > bigend - midend) { /* faster to shorten from end */
3638 Move(little, mid, littlelen,char);
3641 i = bigend - midend;
3643 Move(midend, mid, i,char);
3647 SvCUR_set(bigstr, mid - big);
3650 else if ((i = mid - big)) { /* faster from front */
3651 midend -= littlelen;
3653 sv_chop(bigstr,midend-i);
3658 Move(little, mid, littlelen,char);
3660 else if (littlelen) {
3661 midend -= littlelen;
3662 sv_chop(bigstr,midend);
3663 Move(little,midend,littlelen,char);
3666 sv_chop(bigstr,midend);
3672 =for apidoc sv_replace
3674 Make the first argument a copy of the second, then delete the original.
3680 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3683 U32 refcnt = SvREFCNT(sv);
3684 SV_CHECK_THINKFIRST(sv);
3685 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3686 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3687 if (SvMAGICAL(sv)) {
3691 sv_upgrade(nsv, SVt_PVMG);
3692 SvMAGIC(nsv) = SvMAGIC(sv);
3693 SvFLAGS(nsv) |= SvMAGICAL(sv);
3699 assert(!SvREFCNT(sv));
3700 StructCopy(nsv,sv,SV);
3701 SvREFCNT(sv) = refcnt;
3702 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3707 =for apidoc sv_clear
3709 Clear an SV, making it empty. Does not free the memory used by the SV
3716 Perl_sv_clear(pTHX_ register SV *sv)
3720 assert(SvREFCNT(sv) == 0);
3724 if (PL_defstash) { /* Still have a symbol table? */
3729 Zero(&tmpref, 1, SV);
3730 sv_upgrade(&tmpref, SVt_RV);
3732 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3733 SvREFCNT(&tmpref) = 1;
3736 stash = SvSTASH(sv);
3737 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3740 PUSHSTACKi(PERLSI_DESTROY);
3741 SvRV(&tmpref) = SvREFCNT_inc(sv);
3746 call_sv((SV*)GvCV(destructor),
3747 G_DISCARD|G_EVAL|G_KEEPERR);
3753 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3755 del_XRV(SvANY(&tmpref));
3758 if (PL_in_clean_objs)
3759 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3761 /* DESTROY gave object new lease on life */
3767 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3768 SvOBJECT_off(sv); /* Curse the object. */
3769 if (SvTYPE(sv) != SVt_PVIO)
3770 --PL_sv_objcount; /* XXX Might want something more general */
3773 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3776 switch (SvTYPE(sv)) {
3779 IoIFP(sv) != PerlIO_stdin() &&
3780 IoIFP(sv) != PerlIO_stdout() &&
3781 IoIFP(sv) != PerlIO_stderr())
3783 io_close((IO*)sv, FALSE);
3785 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3786 PerlDir_close(IoDIRP(sv));
3787 IoDIRP(sv) = (DIR*)NULL;
3788 Safefree(IoTOP_NAME(sv));
3789 Safefree(IoFMT_NAME(sv));
3790 Safefree(IoBOTTOM_NAME(sv));
3805 SvREFCNT_dec(LvTARG(sv));
3809 Safefree(GvNAME(sv));
3810 /* cannot decrease stash refcount yet, as we might recursively delete
3811 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3812 of stash until current sv is completely gone.
3813 -- JohnPC, 27 Mar 1998 */
3814 stash = GvSTASH(sv);
3820 (void)SvOOK_off(sv);
3828 SvREFCNT_dec(SvRV(sv));
3830 else if (SvPVX(sv) && SvLEN(sv))
3831 Safefree(SvPVX(sv));
3832 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3833 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3845 switch (SvTYPE(sv)) {
3861 del_XPVIV(SvANY(sv));
3864 del_XPVNV(SvANY(sv));
3867 del_XPVMG(SvANY(sv));
3870 del_XPVLV(SvANY(sv));
3873 del_XPVAV(SvANY(sv));
3876 del_XPVHV(SvANY(sv));
3879 del_XPVCV(SvANY(sv));
3882 del_XPVGV(SvANY(sv));
3883 /* code duplication for increased performance. */
3884 SvFLAGS(sv) &= SVf_BREAK;
3885 SvFLAGS(sv) |= SVTYPEMASK;
3886 /* decrease refcount of the stash that owns this GV, if any */
3888 SvREFCNT_dec(stash);
3889 return; /* not break, SvFLAGS reset already happened */
3891 del_XPVBM(SvANY(sv));
3894 del_XPVFM(SvANY(sv));
3897 del_XPVIO(SvANY(sv));
3900 SvFLAGS(sv) &= SVf_BREAK;
3901 SvFLAGS(sv) |= SVTYPEMASK;
3905 Perl_sv_newref(pTHX_ SV *sv)
3908 ATOMIC_INC(SvREFCNT(sv));
3915 Free the memory used by an SV.
3921 Perl_sv_free(pTHX_ SV *sv)
3924 int refcount_is_zero;
3928 if (SvREFCNT(sv) == 0) {
3929 if (SvFLAGS(sv) & SVf_BREAK)
3931 if (PL_in_clean_all) /* All is fair */
3933 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3934 /* make sure SvREFCNT(sv)==0 happens very seldom */
3935 SvREFCNT(sv) = (~(U32)0)/2;
3938 if (ckWARN_d(WARN_INTERNAL))
3939 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3942 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3943 if (!refcount_is_zero)
3947 if (ckWARN_d(WARN_DEBUGGING))
3948 Perl_warner(aTHX_ WARN_DEBUGGING,
3949 "Attempt to free temp prematurely: SV 0x%"UVxf,
3954 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3955 /* make sure SvREFCNT(sv)==0 happens very seldom */
3956 SvREFCNT(sv) = (~(U32)0)/2;
3967 Returns the length of the string in the SV. See also C<SvCUR>.
3973 Perl_sv_len(pTHX_ register SV *sv)
3982 len = mg_length(sv);
3984 junk = SvPV(sv, len);
3989 =for apidoc sv_len_utf8
3991 Returns the number of characters in the string in an SV, counting wide
3992 UTF8 bytes as a single character.
3998 Perl_sv_len_utf8(pTHX_ register SV *sv)
4005 return mg_length(sv);
4010 U8 *s = (U8*)SvPV(sv, len);
4012 return Perl_utf8_length(aTHX_ s, s + len);
4017 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4022 I32 uoffset = *offsetp;
4028 start = s = (U8*)SvPV(sv, len);
4030 while (s < send && uoffset--)
4034 *offsetp = s - start;
4038 while (s < send && ulen--)
4048 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4057 s = (U8*)SvPV(sv, len);
4059 Perl_croak(aTHX_ "panic: bad byte offset");
4060 send = s + *offsetp;
4068 if (ckWARN_d(WARN_UTF8))
4069 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4079 Returns a boolean indicating whether the strings in the two SVs are
4086 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4093 bool pv1tmp = FALSE;
4094 bool pv2tmp = FALSE;
4101 pv1 = SvPV(sv1, cur1);
4108 pv2 = SvPV(sv2, cur2);
4110 /* do not utf8ize the comparands as a side-effect */
4111 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4113 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4117 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4123 eq = memEQ(pv1, pv2, cur1);
4136 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4137 string in C<sv1> is less than, equal to, or greater than the string in
4144 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4149 bool pv1tmp = FALSE;
4150 bool pv2tmp = FALSE;
4157 pv1 = SvPV(sv1, cur1);
4164 pv2 = SvPV(sv2, cur2);
4166 /* do not utf8ize the comparands as a side-effect */
4167 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4169 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4173 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4179 cmp = cur2 ? -1 : 0;
4183 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4186 cmp = retval < 0 ? -1 : 1;
4187 } else if (cur1 == cur2) {
4190 cmp = cur1 < cur2 ? -1 : 1;
4203 =for apidoc sv_cmp_locale
4205 Compares the strings in two SVs in a locale-aware manner. See
4212 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4214 #ifdef USE_LOCALE_COLLATE
4220 if (PL_collation_standard)
4224 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4226 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4228 if (!pv1 || !len1) {
4239 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4242 return retval < 0 ? -1 : 1;
4245 * When the result of collation is equality, that doesn't mean
4246 * that there are no differences -- some locales exclude some
4247 * characters from consideration. So to avoid false equalities,
4248 * we use the raw string as a tiebreaker.
4254 #endif /* USE_LOCALE_COLLATE */
4256 return sv_cmp(sv1, sv2);
4259 #ifdef USE_LOCALE_COLLATE
4261 * Any scalar variable may carry an 'o' magic that contains the
4262 * scalar data of the variable transformed to such a format that
4263 * a normal memory comparison can be used to compare the data
4264 * according to the locale settings.
4267 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4271 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4272 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4277 Safefree(mg->mg_ptr);
4279 if ((xf = mem_collxfrm(s, len, &xlen))) {
4280 if (SvREADONLY(sv)) {
4283 return xf + sizeof(PL_collation_ix);
4286 sv_magic(sv, 0, 'o', 0, 0);
4287 mg = mg_find(sv, 'o');
4300 if (mg && mg->mg_ptr) {
4302 return mg->mg_ptr + sizeof(PL_collation_ix);
4310 #endif /* USE_LOCALE_COLLATE */
4315 Get a line from the filehandle and store it into the SV, optionally
4316 appending to the currently-stored string.
4322 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4327 register STDCHAR rslast;
4328 register STDCHAR *bp;
4332 SV_CHECK_THINKFIRST(sv);
4333 (void)SvUPGRADE(sv, SVt_PV);
4337 if (RsSNARF(PL_rs)) {
4341 else if (RsRECORD(PL_rs)) {
4342 I32 recsize, bytesread;
4345 /* Grab the size of the record we're getting */
4346 recsize = SvIV(SvRV(PL_rs));
4347 (void)SvPOK_only(sv); /* Validate pointer */
4348 buffer = SvGROW(sv, recsize + 1);
4351 /* VMS wants read instead of fread, because fread doesn't respect */
4352 /* RMS record boundaries. This is not necessarily a good thing to be */
4353 /* doing, but we've got no other real choice */
4354 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4356 bytesread = PerlIO_read(fp, buffer, recsize);
4358 SvCUR_set(sv, bytesread);
4359 buffer[bytesread] = '\0';
4360 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4362 else if (RsPARA(PL_rs)) {
4367 rsptr = SvPV(PL_rs, rslen);
4368 rslast = rslen ? rsptr[rslen - 1] : '\0';
4370 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4371 do { /* to make sure file boundaries work right */
4374 i = PerlIO_getc(fp);
4378 PerlIO_ungetc(fp,i);
4384 /* See if we know enough about I/O mechanism to cheat it ! */
4386 /* This used to be #ifdef test - it is made run-time test for ease
4387 of abstracting out stdio interface. One call should be cheap
4388 enough here - and may even be a macro allowing compile
4392 if (PerlIO_fast_gets(fp)) {
4395 * We're going to steal some values from the stdio struct
4396 * and put EVERYTHING in the innermost loop into registers.
4398 register STDCHAR *ptr;
4402 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4403 /* An ungetc()d char is handled separately from the regular
4404 * buffer, so we getc() it back out and stuff it in the buffer.
4406 i = PerlIO_getc(fp);
4407 if (i == EOF) return 0;
4408 *(--((*fp)->_ptr)) = (unsigned char) i;
4412 /* Here is some breathtakingly efficient cheating */
4414 cnt = PerlIO_get_cnt(fp); /* get count into register */
4415 (void)SvPOK_only(sv); /* validate pointer */
4416 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4417 if (cnt > 80 && SvLEN(sv) > append) {
4418 shortbuffered = cnt - SvLEN(sv) + append + 1;
4419 cnt -= shortbuffered;
4423 /* remember that cnt can be negative */
4424 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4429 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4430 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4431 DEBUG_P(PerlIO_printf(Perl_debug_log,
4432 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4433 DEBUG_P(PerlIO_printf(Perl_debug_log,
4434 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4435 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4436 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4441 while (cnt > 0) { /* this | eat */
4443 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4444 goto thats_all_folks; /* screams | sed :-) */
4448 Copy(ptr, bp, cnt, char); /* this | eat */
4449 bp += cnt; /* screams | dust */
4450 ptr += cnt; /* louder | sed :-) */
4455 if (shortbuffered) { /* oh well, must extend */
4456 cnt = shortbuffered;
4458 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4460 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4461 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4465 DEBUG_P(PerlIO_printf(Perl_debug_log,
4466 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4467 PTR2UV(ptr),(long)cnt));
4468 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4469 DEBUG_P(PerlIO_printf(Perl_debug_log,
4470 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4471 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4472 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4473 /* This used to call 'filbuf' in stdio form, but as that behaves like
4474 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4475 another abstraction. */
4476 i = PerlIO_getc(fp); /* get more characters */
4477 DEBUG_P(PerlIO_printf(Perl_debug_log,
4478 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4479 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4480 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4481 cnt = PerlIO_get_cnt(fp);
4482 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4483 DEBUG_P(PerlIO_printf(Perl_debug_log,
4484 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4486 if (i == EOF) /* all done for ever? */
4487 goto thats_really_all_folks;
4489 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4491 SvGROW(sv, bpx + cnt + 2);
4492 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4494 *bp++ = i; /* store character from PerlIO_getc */
4496 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4497 goto thats_all_folks;
4501 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4502 memNE((char*)bp - rslen, rsptr, rslen))
4503 goto screamer; /* go back to the fray */
4504 thats_really_all_folks:
4506 cnt += shortbuffered;
4507 DEBUG_P(PerlIO_printf(Perl_debug_log,
4508 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4509 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4510 DEBUG_P(PerlIO_printf(Perl_debug_log,
4511 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4512 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4513 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4515 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4516 DEBUG_P(PerlIO_printf(Perl_debug_log,
4517 "Screamer: done, len=%ld, string=|%.*s|\n",
4518 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4523 /*The big, slow, and stupid way */
4526 /* Need to work around EPOC SDK features */
4527 /* On WINS: MS VC5 generates calls to _chkstk, */
4528 /* if a `large' stack frame is allocated */
4529 /* gcc on MARM does not generate calls like these */
4535 register STDCHAR *bpe = buf + sizeof(buf);
4537 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4538 ; /* keep reading */
4542 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4543 /* Accomodate broken VAXC compiler, which applies U8 cast to
4544 * both args of ?: operator, causing EOF to change into 255
4546 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4550 sv_catpvn(sv, (char *) buf, cnt);
4552 sv_setpvn(sv, (char *) buf, cnt);
4554 if (i != EOF && /* joy */
4556 SvCUR(sv) < rslen ||
4557 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4561 * If we're reading from a TTY and we get a short read,
4562 * indicating that the user hit his EOF character, we need
4563 * to notice it now, because if we try to read from the TTY
4564 * again, the EOF condition will disappear.
4566 * The comparison of cnt to sizeof(buf) is an optimization
4567 * that prevents unnecessary calls to feof().
4571 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4576 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4577 while (i != EOF) { /* to make sure file boundaries work right */
4578 i = PerlIO_getc(fp);
4580 PerlIO_ungetc(fp,i);
4586 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4593 Auto-increment of the value in the SV.
4599 Perl_sv_inc(pTHX_ register SV *sv)
4608 if (SvTHINKFIRST(sv)) {
4609 if (SvREADONLY(sv)) {
4611 if (PL_curcop != &PL_compiling)
4612 Perl_croak(aTHX_ PL_no_modify);
4616 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4618 i = PTR2IV(SvRV(sv));
4623 flags = SvFLAGS(sv);
4624 if (flags & SVp_NOK) {
4625 (void)SvNOK_only(sv);
4629 if (flags & SVp_IOK) {
4631 if (SvUVX(sv) == UV_MAX)
4632 sv_setnv(sv, (NV)UV_MAX + 1.0);
4634 (void)SvIOK_only_UV(sv);
4637 if (SvIVX(sv) == IV_MAX)
4638 sv_setnv(sv, (NV)IV_MAX + 1.0);
4640 (void)SvIOK_only(sv);
4646 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4647 if ((flags & SVTYPEMASK) < SVt_PVNV)
4648 sv_upgrade(sv, SVt_NV);
4650 (void)SvNOK_only(sv);
4654 while (isALPHA(*d)) d++;
4655 while (isDIGIT(*d)) d++;
4657 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4661 while (d >= SvPVX(sv)) {
4669 /* MKS: The original code here died if letters weren't consecutive.
4670 * at least it didn't have to worry about non-C locales. The
4671 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4672 * arranged in order (although not consecutively) and that only
4673 * [A-Za-z] are accepted by isALPHA in the C locale.
4675 if (*d != 'z' && *d != 'Z') {
4676 do { ++*d; } while (!isALPHA(*d));
4679 *(d--) -= 'z' - 'a';
4684 *(d--) -= 'z' - 'a' + 1;
4688 /* oh,oh, the number grew */
4689 SvGROW(sv, SvCUR(sv) + 2);
4691 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4702 Auto-decrement of the value in the SV.
4708 Perl_sv_dec(pTHX_ register SV *sv)
4716 if (SvTHINKFIRST(sv)) {
4717 if (SvREADONLY(sv)) {
4719 if (PL_curcop != &PL_compiling)
4720 Perl_croak(aTHX_ PL_no_modify);
4724 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4726 i = PTR2IV(SvRV(sv));
4731 flags = SvFLAGS(sv);
4732 if (flags & SVp_NOK) {
4734 (void)SvNOK_only(sv);
4737 if (flags & SVp_IOK) {
4739 if (SvUVX(sv) == 0) {
4740 (void)SvIOK_only(sv);
4744 (void)SvIOK_only_UV(sv);
4748 if (SvIVX(sv) == IV_MIN)
4749 sv_setnv(sv, (NV)IV_MIN - 1.0);
4751 (void)SvIOK_only(sv);
4757 if (!(flags & SVp_POK)) {
4758 if ((flags & SVTYPEMASK) < SVt_PVNV)
4759 sv_upgrade(sv, SVt_NV);
4761 (void)SvNOK_only(sv);
4764 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4768 =for apidoc sv_mortalcopy
4770 Creates a new SV which is a copy of the original SV. The new SV is marked
4776 /* Make a string that will exist for the duration of the expression
4777 * evaluation. Actually, it may have to last longer than that, but
4778 * hopefully we won't free it until it has been assigned to a
4779 * permanent location. */
4782 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4788 sv_setsv(sv,oldstr);
4790 PL_tmps_stack[++PL_tmps_ix] = sv;
4796 =for apidoc sv_newmortal
4798 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4804 Perl_sv_newmortal(pTHX)
4810 SvFLAGS(sv) = SVs_TEMP;
4812 PL_tmps_stack[++PL_tmps_ix] = sv;
4817 =for apidoc sv_2mortal
4819 Marks an SV as mortal. The SV will be destroyed when the current context
4825 /* same thing without the copying */
4828 Perl_sv_2mortal(pTHX_ register SV *sv)
4833 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4836 PL_tmps_stack[++PL_tmps_ix] = sv;
4844 Creates a new SV and copies a string into it. The reference count for the
4845 SV is set to 1. If C<len> is zero, Perl will compute the length using
4846 strlen(). For efficiency, consider using C<newSVpvn> instead.
4852 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4859 sv_setpvn(sv,s,len);
4864 =for apidoc newSVpvn
4866 Creates a new SV and copies a string into it. The reference count for the
4867 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4868 string. You are responsible for ensuring that the source string is at least
4875 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4880 sv_setpvn(sv,s,len);
4885 =for apidoc newSVpvn_share
4887 Creates a new SV and populates it with a string from
4888 the string table. Turns on READONLY and FAKE.
4889 The idea here is that as string table is used for shared hash
4890 keys these strings will have SvPVX == HeKEY and hash lookup
4891 will avoid string compare.
4897 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4901 PERL_HASH(hash, src, len);
4903 sv_upgrade(sv, SVt_PVIV);
4904 SvPVX(sv) = sharepvn(src, len, hash);
4914 #if defined(PERL_IMPLICIT_CONTEXT)
4916 Perl_newSVpvf_nocontext(const char* pat, ...)
4921 va_start(args, pat);
4922 sv = vnewSVpvf(pat, &args);
4929 =for apidoc newSVpvf
4931 Creates a new SV an initialize it with the string formatted like
4938 Perl_newSVpvf(pTHX_ const char* pat, ...)
4942 va_start(args, pat);
4943 sv = vnewSVpvf(pat, &args);
4949 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4953 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4960 Creates a new SV and copies a floating point value into it.
4961 The reference count for the SV is set to 1.
4967 Perl_newSVnv(pTHX_ NV n)
4979 Creates a new SV and copies an integer into it. The reference count for the
4986 Perl_newSViv(pTHX_ IV i)
4998 Creates a new SV and copies an unsigned integer into it.
4999 The reference count for the SV is set to 1.
5005 Perl_newSVuv(pTHX_ UV u)
5015 =for apidoc newRV_noinc
5017 Creates an RV wrapper for an SV. The reference count for the original
5018 SV is B<not> incremented.
5024 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5030 sv_upgrade(sv, SVt_RV);
5037 /* newRV_inc is #defined to newRV in sv.h */
5039 Perl_newRV(pTHX_ SV *tmpRef)
5041 return newRV_noinc(SvREFCNT_inc(tmpRef));
5047 Creates a new SV which is an exact duplicate of the original SV.
5052 /* make an exact duplicate of old */
5055 Perl_newSVsv(pTHX_ register SV *old)
5062 if (SvTYPE(old) == SVTYPEMASK) {
5063 if (ckWARN_d(WARN_INTERNAL))
5064 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5079 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5087 char todo[PERL_UCHAR_MAX+1];
5092 if (!*s) { /* reset ?? searches */
5093 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5094 pm->op_pmdynflags &= ~PMdf_USED;
5099 /* reset variables */
5101 if (!HvARRAY(stash))
5104 Zero(todo, 256, char);
5106 i = (unsigned char)*s;
5110 max = (unsigned char)*s++;
5111 for ( ; i <= max; i++) {
5114 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5115 for (entry = HvARRAY(stash)[i];
5117 entry = HeNEXT(entry))
5119 if (!todo[(U8)*HeKEY(entry)])
5121 gv = (GV*)HeVAL(entry);
5123 if (SvTHINKFIRST(sv)) {
5124 if (!SvREADONLY(sv) && SvROK(sv))
5129 if (SvTYPE(sv) >= SVt_PV) {
5131 if (SvPVX(sv) != Nullch)
5138 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5140 #ifdef USE_ENVIRON_ARRAY
5142 environ[0] = Nullch;
5151 Perl_sv_2io(pTHX_ SV *sv)
5157 switch (SvTYPE(sv)) {
5165 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5169 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5171 return sv_2io(SvRV(sv));
5172 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5178 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5185 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5192 return *gvp = Nullgv, Nullcv;
5193 switch (SvTYPE(sv)) {
5213 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5214 tryAMAGICunDEREF(to_cv);
5217 if (SvTYPE(sv) == SVt_PVCV) {
5226 Perl_croak(aTHX_ "Not a subroutine reference");
5231 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5237 if (lref && !GvCVu(gv)) {
5240 tmpsv = NEWSV(704,0);
5241 gv_efullname3(tmpsv, gv, Nullch);
5242 /* XXX this is probably not what they think they're getting.
5243 * It has the same effect as "sub name;", i.e. just a forward
5245 newSUB(start_subparse(FALSE, 0),
5246 newSVOP(OP_CONST, 0, tmpsv),
5251 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5260 Returns true if the SV has a true value by Perl's rules.
5266 Perl_sv_true(pTHX_ register SV *sv)
5273 if ((tXpv = (XPV*)SvANY(sv)) &&
5274 (tXpv->xpv_cur > 1 ||
5275 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5282 return SvIVX(sv) != 0;
5285 return SvNVX(sv) != 0.0;
5287 return sv_2bool(sv);
5293 Perl_sv_iv(pTHX_ register SV *sv)
5297 return (IV)SvUVX(sv);
5304 Perl_sv_uv(pTHX_ register SV *sv)
5309 return (UV)SvIVX(sv);
5315 Perl_sv_nv(pTHX_ register SV *sv)
5323 Perl_sv_pv(pTHX_ SV *sv)
5330 return sv_2pv(sv, &n_a);
5334 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5340 return sv_2pv(sv, lp);
5344 =for apidoc sv_pvn_force
5346 Get a sensible string out of the SV somehow.
5352 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5356 if (SvTHINKFIRST(sv) && !SvROK(sv))
5357 sv_force_normal(sv);
5363 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5365 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5366 PL_op_name[PL_op->op_type]);
5370 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5375 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5376 SvGROW(sv, len + 1);
5377 Move(s,SvPVX(sv),len,char);
5382 SvPOK_on(sv); /* validate pointer */
5384 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5385 PTR2UV(sv),SvPVX(sv)));
5392 Perl_sv_pvbyte(pTHX_ SV *sv)
5398 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5400 return sv_pvn(sv,lp);
5404 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5406 return sv_pvn_force(sv,lp);
5410 Perl_sv_pvutf8(pTHX_ SV *sv)
5412 sv_utf8_upgrade(sv);
5417 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5419 sv_utf8_upgrade(sv);
5420 return sv_pvn(sv,lp);
5424 =for apidoc sv_pvutf8n_force
5426 Get a sensible UTF8-encoded string out of the SV somehow. See
5433 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5435 sv_utf8_upgrade(sv);
5436 return sv_pvn_force(sv,lp);
5440 =for apidoc sv_reftype
5442 Returns a string describing what the SV is a reference to.
5448 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5450 if (ob && SvOBJECT(sv))
5451 return HvNAME(SvSTASH(sv));
5453 switch (SvTYPE(sv)) {
5467 case SVt_PVLV: return "LVALUE";
5468 case SVt_PVAV: return "ARRAY";
5469 case SVt_PVHV: return "HASH";
5470 case SVt_PVCV: return "CODE";
5471 case SVt_PVGV: return "GLOB";
5472 case SVt_PVFM: return "FORMAT";
5473 case SVt_PVIO: return "IO";
5474 default: return "UNKNOWN";
5480 =for apidoc sv_isobject
5482 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5483 object. If the SV is not an RV, or if the object is not blessed, then this
5490 Perl_sv_isobject(pTHX_ SV *sv)
5507 Returns a boolean indicating whether the SV is blessed into the specified
5508 class. This does not check for subtypes; use C<sv_derived_from> to verify
5509 an inheritance relationship.
5515 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5527 return strEQ(HvNAME(SvSTASH(sv)), name);
5533 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5534 it will be upgraded to one. If C<classname> is non-null then the new SV will
5535 be blessed in the specified package. The new SV is returned and its
5536 reference count is 1.
5542 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5549 SV_CHECK_THINKFIRST(rv);
5552 if (SvTYPE(rv) >= SVt_PVMG) {
5553 U32 refcnt = SvREFCNT(rv);
5557 SvREFCNT(rv) = refcnt;
5560 if (SvTYPE(rv) < SVt_RV)
5561 sv_upgrade(rv, SVt_RV);
5562 else if (SvTYPE(rv) > SVt_RV) {
5563 (void)SvOOK_off(rv);
5564 if (SvPVX(rv) && SvLEN(rv))
5565 Safefree(SvPVX(rv));
5575 HV* stash = gv_stashpv(classname, TRUE);
5576 (void)sv_bless(rv, stash);
5582 =for apidoc sv_setref_pv
5584 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5585 argument will be upgraded to an RV. That RV will be modified to point to
5586 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5587 into the SV. The C<classname> argument indicates the package for the
5588 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5589 will be returned and will have a reference count of 1.
5591 Do not use with other Perl types such as HV, AV, SV, CV, because those
5592 objects will become corrupted by the pointer copy process.
5594 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5600 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5603 sv_setsv(rv, &PL_sv_undef);
5607 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5612 =for apidoc sv_setref_iv
5614 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5615 argument will be upgraded to an RV. That RV will be modified to point to
5616 the new SV. The C<classname> argument indicates the package for the
5617 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5618 will be returned and will have a reference count of 1.
5624 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5626 sv_setiv(newSVrv(rv,classname), iv);
5631 =for apidoc sv_setref_nv
5633 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5634 argument will be upgraded to an RV. That RV will be modified to point to
5635 the new SV. The C<classname> argument indicates the package for the
5636 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5637 will be returned and will have a reference count of 1.
5643 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5645 sv_setnv(newSVrv(rv,classname), nv);
5650 =for apidoc sv_setref_pvn
5652 Copies a string into a new SV, optionally blessing the SV. The length of the
5653 string must be specified with C<n>. The C<rv> argument will be upgraded to
5654 an RV. That RV will be modified to point to the new SV. The C<classname>
5655 argument indicates the package for the blessing. Set C<classname> to
5656 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5657 a reference count of 1.
5659 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5665 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5667 sv_setpvn(newSVrv(rv,classname), pv, n);
5672 =for apidoc sv_bless
5674 Blesses an SV into a specified package. The SV must be an RV. The package
5675 must be designated by its stash (see C<gv_stashpv()>). The reference count
5676 of the SV is unaffected.
5682 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5687 Perl_croak(aTHX_ "Can't bless non-reference value");
5689 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5690 if (SvREADONLY(tmpRef))
5691 Perl_croak(aTHX_ PL_no_modify);
5692 if (SvOBJECT(tmpRef)) {
5693 if (SvTYPE(tmpRef) != SVt_PVIO)
5695 SvREFCNT_dec(SvSTASH(tmpRef));
5698 SvOBJECT_on(tmpRef);
5699 if (SvTYPE(tmpRef) != SVt_PVIO)
5701 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5702 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5713 S_sv_unglob(pTHX_ SV *sv)
5717 assert(SvTYPE(sv) == SVt_PVGV);
5722 SvREFCNT_dec(GvSTASH(sv));
5723 GvSTASH(sv) = Nullhv;
5725 sv_unmagic(sv, '*');
5726 Safefree(GvNAME(sv));
5729 /* need to keep SvANY(sv) in the right arena */
5730 xpvmg = new_XPVMG();
5731 StructCopy(SvANY(sv), xpvmg, XPVMG);
5732 del_XPVGV(SvANY(sv));
5735 SvFLAGS(sv) &= ~SVTYPEMASK;
5736 SvFLAGS(sv) |= SVt_PVMG;
5740 =for apidoc sv_unref
5742 Unsets the RV status of the SV, and decrements the reference count of
5743 whatever was being referenced by the RV. This can almost be thought of
5744 as a reversal of C<newSVrv>. See C<SvROK_off>.
5750 Perl_sv_unref(pTHX_ SV *sv)
5754 if (SvWEAKREF(sv)) {
5762 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5765 sv_2mortal(rv); /* Schedule for freeing later */
5769 Perl_sv_taint(pTHX_ SV *sv)
5771 sv_magic((sv), Nullsv, 't', Nullch, 0);
5775 Perl_sv_untaint(pTHX_ SV *sv)
5777 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5778 MAGIC *mg = mg_find(sv, 't');
5785 Perl_sv_tainted(pTHX_ SV *sv)
5787 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5788 MAGIC *mg = mg_find(sv, 't');
5789 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5796 =for apidoc sv_setpviv
5798 Copies an integer into the given SV, also updating its string value.
5799 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5805 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5807 char buf[TYPE_CHARS(UV)];
5809 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5811 sv_setpvn(sv, ptr, ebuf - ptr);
5816 =for apidoc sv_setpviv_mg
5818 Like C<sv_setpviv>, but also handles 'set' magic.
5824 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5826 char buf[TYPE_CHARS(UV)];
5828 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5830 sv_setpvn(sv, ptr, ebuf - ptr);
5834 #if defined(PERL_IMPLICIT_CONTEXT)
5836 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5840 va_start(args, pat);
5841 sv_vsetpvf(sv, pat, &args);
5847 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5851 va_start(args, pat);
5852 sv_vsetpvf_mg(sv, pat, &args);
5858 =for apidoc sv_setpvf
5860 Processes its arguments like C<sprintf> and sets an SV to the formatted
5861 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5867 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5870 va_start(args, pat);
5871 sv_vsetpvf(sv, pat, &args);
5876 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5878 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5882 =for apidoc sv_setpvf_mg
5884 Like C<sv_setpvf>, but also handles 'set' magic.
5890 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5893 va_start(args, pat);
5894 sv_vsetpvf_mg(sv, pat, &args);
5899 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5901 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5905 #if defined(PERL_IMPLICIT_CONTEXT)
5907 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5911 va_start(args, pat);
5912 sv_vcatpvf(sv, pat, &args);
5917 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5921 va_start(args, pat);
5922 sv_vcatpvf_mg(sv, pat, &args);
5928 =for apidoc sv_catpvf
5930 Processes its arguments like C<sprintf> and appends the formatted output
5931 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5932 typically be called after calling this function to handle 'set' magic.
5938 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5941 va_start(args, pat);
5942 sv_vcatpvf(sv, pat, &args);
5947 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5949 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5953 =for apidoc sv_catpvf_mg
5955 Like C<sv_catpvf>, but also handles 'set' magic.
5961 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5964 va_start(args, pat);
5965 sv_vcatpvf_mg(sv, pat, &args);
5970 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5972 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5977 =for apidoc sv_vsetpvfn
5979 Works like C<vcatpvfn> but copies the text into the SV instead of
5986 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5988 sv_setpvn(sv, "", 0);
5989 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5993 =for apidoc sv_vcatpvfn
5995 Processes its arguments like C<vsprintf> and appends the formatted output
5996 to an SV. Uses an array of SVs if the C style variable argument list is
5997 missing (NULL). When running with taint checks enabled, indicates via
5998 C<maybe_tainted> if results are untrustworthy (often due to the use of
6005 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6013 static char nullstr[] = "(null)";
6016 /* no matter what, this is a string now */
6017 (void)SvPV_force(sv, origlen);
6019 /* special-case "", "%s", and "%_" */
6022 if (patlen == 2 && pat[0] == '%') {
6026 char *s = va_arg(*args, char*);
6027 sv_catpv(sv, s ? s : nullstr);
6029 else if (svix < svmax) {
6030 sv_catsv(sv, *svargs);
6031 if (DO_UTF8(*svargs))
6037 argsv = va_arg(*args, SV*);
6038 sv_catsv(sv, argsv);
6043 /* See comment on '_' below */
6048 patend = (char*)pat + patlen;
6049 for (p = (char*)pat; p < patend; p = q) {
6052 bool vectorize = FALSE;
6059 bool has_precis = FALSE;
6061 bool is_utf = FALSE;
6064 U8 utf8buf[UTF8_MAXLEN];
6065 STRLEN esignlen = 0;
6067 char *eptr = Nullch;
6069 /* Times 4: a decimal digit takes more than 3 binary digits.
6070 * NV_DIG: mantissa takes than many decimal digits.
6071 * Plus 32: Playing safe. */
6072 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6073 /* large enough for "%#.#f" --chip */
6074 /* what about long double NVs? --jhi */
6077 U8 *vecstr = Null(U8*);
6089 STRLEN dotstrlen = 1;
6090 I32 epix = 0; /* explicit parameter index */
6091 I32 ewix = 0; /* explicit width index */
6092 bool asterisk = FALSE;
6094 for (q = p; q < patend && *q != '%'; ++q) ;
6096 sv_catpvn(sv, p, q - p);
6125 case '*': /* printf("%*vX",":",$ipv6addr) */
6130 vecsv = va_arg(*args, SV*);
6131 else if (svix < svmax)
6132 vecsv = svargs[svix++];
6135 dotstr = SvPVx(vecsv,dotstrlen);
6163 case '1': case '2': case '3':
6164 case '4': case '5': case '6':
6165 case '7': case '8': case '9':
6168 width = width * 10 + (*q++ - '0');
6170 if (asterisk && ewix == 0) {
6175 } else if (epix == 0) {
6187 i = va_arg(*args, int);
6189 i = (ewix ? ewix <= svmax : svix < svmax) ?
6190 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6192 width = (i < 0) ? -i : i;
6201 i = va_arg(*args, int);
6203 i = (ewix ? ewix <= svmax : svix < svmax)
6204 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6205 precis = (i < 0) ? 0 : i;
6211 precis = precis * 10 + (*q++ - '0');
6218 vecsv = va_arg(*args, SV*);
6219 vecstr = (U8*)SvPVx(vecsv,veclen);
6220 utf = DO_UTF8(vecsv);
6222 else if (epix ? epix <= svmax : svix < svmax) {
6223 vecsv = svargs[epix ? epix-1 : svix++];
6224 vecstr = (U8*)SvPVx(vecsv,veclen);
6225 utf = DO_UTF8(vecsv);
6236 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6247 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6248 if (*(q + 1) == 'l') { /* lld, llf */
6275 uv = va_arg(*args, int);
6277 uv = (epix ? epix <= svmax : svix < svmax) ?
6278 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6279 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6280 eptr = (char*)utf8buf;
6281 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6293 eptr = va_arg(*args, char*);
6295 #ifdef MACOS_TRADITIONAL
6296 /* On MacOS, %#s format is used for Pascal strings */
6301 elen = strlen(eptr);
6304 elen = sizeof nullstr - 1;
6307 else if (epix ? epix <= svmax : svix < svmax) {
6308 argsv = svargs[epix ? epix-1 : svix++];
6309 eptr = SvPVx(argsv, elen);
6310 if (DO_UTF8(argsv)) {
6311 if (has_precis && precis < elen) {
6313 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6316 if (width) { /* fudge width (can't fudge elen) */
6317 width += elen - sv_len_utf8(argsv);
6326 * The "%_" hack might have to be changed someday,
6327 * if ISO or ANSI decide to use '_' for something.
6328 * So we keep it hidden from users' code.
6332 argsv = va_arg(*args,SV*);
6333 eptr = SvPVx(argsv, elen);
6339 if (has_precis && elen > precis)
6349 uv = PTR2UV(va_arg(*args, void*));
6351 uv = (epix ? epix <= svmax : svix < svmax) ?
6352 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6372 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6382 case 'h': iv = (short)va_arg(*args, int); break;
6383 default: iv = va_arg(*args, int); break;
6384 case 'l': iv = va_arg(*args, long); break;
6385 case 'V': iv = va_arg(*args, IV); break;
6387 case 'q': iv = va_arg(*args, Quad_t); break;
6392 iv = (epix ? epix <= svmax : svix < svmax) ?
6393 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6395 case 'h': iv = (short)iv; break;
6397 case 'l': iv = (long)iv; break;
6400 case 'q': iv = (Quad_t)iv; break;
6407 esignbuf[esignlen++] = plus;
6411 esignbuf[esignlen++] = '-';
6455 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6465 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6466 default: uv = va_arg(*args, unsigned); break;
6467 case 'l': uv = va_arg(*args, unsigned long); break;
6468 case 'V': uv = va_arg(*args, UV); break;
6470 case 'q': uv = va_arg(*args, Quad_t); break;
6475 uv = (epix ? epix <= svmax : svix < svmax) ?
6476 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6478 case 'h': uv = (unsigned short)uv; break;
6480 case 'l': uv = (unsigned long)uv; break;
6483 case 'q': uv = (Quad_t)uv; break;
6489 eptr = ebuf + sizeof ebuf;
6495 p = (char*)((c == 'X')
6496 ? "0123456789ABCDEF" : "0123456789abcdef");
6502 esignbuf[esignlen++] = '0';
6503 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6509 *--eptr = '0' + dig;
6511 if (alt && *eptr != '0')
6517 *--eptr = '0' + dig;
6520 esignbuf[esignlen++] = '0';
6521 esignbuf[esignlen++] = 'b';
6524 default: /* it had better be ten or less */
6525 #if defined(PERL_Y2KWARN)
6526 if (ckWARN(WARN_Y2K)) {
6528 char *s = SvPV(sv,n);
6529 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6530 && (n == 2 || !isDIGIT(s[n-3])))
6532 Perl_warner(aTHX_ WARN_Y2K,
6533 "Possible Y2K bug: %%%c %s",
6534 c, "format string following '19'");
6540 *--eptr = '0' + dig;
6541 } while (uv /= base);
6544 elen = (ebuf + sizeof ebuf) - eptr;
6547 zeros = precis - elen;
6548 else if (precis == 0 && elen == 1 && *eptr == '0')
6553 /* FLOATING POINT */
6556 c = 'f'; /* maybe %F isn't supported here */
6562 /* This is evil, but floating point is even more evil */
6566 nv = va_arg(*args, NV);
6568 nv = (epix ? epix <= svmax : svix < svmax) ?
6569 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6572 if (c != 'e' && c != 'E') {
6574 (void)Perl_frexp(nv, &i);
6575 if (i == PERL_INT_MIN)
6576 Perl_die(aTHX_ "panic: frexp");
6578 need = BIT_DIGITS(i);
6580 need += has_precis ? precis : 6; /* known default */
6584 need += 20; /* fudge factor */
6585 if (PL_efloatsize < need) {
6586 Safefree(PL_efloatbuf);
6587 PL_efloatsize = need + 20; /* more fudge */
6588 New(906, PL_efloatbuf, PL_efloatsize, char);
6589 PL_efloatbuf[0] = '\0';
6592 eptr = ebuf + sizeof ebuf;
6595 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6597 /* Copy the one or more characters in a long double
6598 * format before the 'base' ([efgEFG]) character to
6599 * the format string. */
6600 static char const prifldbl[] = PERL_PRIfldbl;
6601 char const *p = prifldbl + sizeof(prifldbl) - 3;
6602 while (p >= prifldbl) { *--eptr = *p--; }
6607 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6612 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6624 (void)sprintf(PL_efloatbuf, eptr, nv);
6626 eptr = PL_efloatbuf;
6627 elen = strlen(PL_efloatbuf);
6634 i = SvCUR(sv) - origlen;
6637 case 'h': *(va_arg(*args, short*)) = i; break;
6638 default: *(va_arg(*args, int*)) = i; break;
6639 case 'l': *(va_arg(*args, long*)) = i; break;
6640 case 'V': *(va_arg(*args, IV*)) = i; break;
6642 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6646 else if (epix ? epix <= svmax : svix < svmax)
6647 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6648 continue; /* not "break" */
6655 if (!args && ckWARN(WARN_PRINTF) &&
6656 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6657 SV *msg = sv_newmortal();
6658 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6659 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6662 Perl_sv_catpvf(aTHX_ msg,
6663 "\"%%%c\"", c & 0xFF);
6665 Perl_sv_catpvf(aTHX_ msg,
6666 "\"%%\\%03"UVof"\"",
6669 sv_catpv(msg, "end of string");
6670 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6673 /* output mangled stuff ... */
6679 /* ... right here, because formatting flags should not apply */
6680 SvGROW(sv, SvCUR(sv) + elen + 1);
6682 memcpy(p, eptr, elen);
6685 SvCUR(sv) = p - SvPVX(sv);
6686 continue; /* not "break" */
6689 have = esignlen + zeros + elen;
6690 need = (have > width ? have : width);
6693 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6695 if (esignlen && fill == '0') {
6696 for (i = 0; i < esignlen; i++)
6700 memset(p, fill, gap);
6703 if (esignlen && fill != '0') {
6704 for (i = 0; i < esignlen; i++)
6708 for (i = zeros; i; i--)
6712 memcpy(p, eptr, elen);
6716 memset(p, ' ', gap);
6721 memcpy(p, dotstr, dotstrlen);
6725 vectorize = FALSE; /* done iterating over vecstr */
6730 SvCUR(sv) = p - SvPVX(sv);
6738 #if defined(USE_ITHREADS)
6740 #if defined(USE_THREADS)
6741 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6744 #ifndef GpREFCNT_inc
6745 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6749 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6750 #define av_dup(s) (AV*)sv_dup((SV*)s)
6751 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6752 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6753 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6754 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6755 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6756 #define io_dup(s) (IO*)sv_dup((SV*)s)
6757 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6758 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6759 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6760 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6761 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6764 Perl_re_dup(pTHX_ REGEXP *r)
6766 /* XXX fix when pmop->op_pmregexp becomes shared */
6767 return ReREFCNT_inc(r);
6771 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6775 return (PerlIO*)NULL;
6777 /* look for it in the table first */
6778 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6782 /* create anew and remember what it is */
6783 ret = PerlIO_fdupopen(fp);
6784 ptr_table_store(PL_ptr_table, fp, ret);
6789 Perl_dirp_dup(pTHX_ DIR *dp)
6798 Perl_gp_dup(pTHX_ GP *gp)
6803 /* look for it in the table first */
6804 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6808 /* create anew and remember what it is */
6809 Newz(0, ret, 1, GP);
6810 ptr_table_store(PL_ptr_table, gp, ret);
6813 ret->gp_refcnt = 0; /* must be before any other dups! */
6814 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6815 ret->gp_io = io_dup_inc(gp->gp_io);
6816 ret->gp_form = cv_dup_inc(gp->gp_form);
6817 ret->gp_av = av_dup_inc(gp->gp_av);
6818 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6819 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6820 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6821 ret->gp_cvgen = gp->gp_cvgen;
6822 ret->gp_flags = gp->gp_flags;
6823 ret->gp_line = gp->gp_line;
6824 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6829 Perl_mg_dup(pTHX_ MAGIC *mg)
6831 MAGIC *mgret = (MAGIC*)NULL;
6834 return (MAGIC*)NULL;
6835 /* look for it in the table first */
6836 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6840 for (; mg; mg = mg->mg_moremagic) {
6842 Newz(0, nmg, 1, MAGIC);
6846 mgprev->mg_moremagic = nmg;
6847 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6848 nmg->mg_private = mg->mg_private;
6849 nmg->mg_type = mg->mg_type;
6850 nmg->mg_flags = mg->mg_flags;
6851 if (mg->mg_type == 'r') {
6852 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6855 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6856 ? sv_dup_inc(mg->mg_obj)
6857 : sv_dup(mg->mg_obj);
6859 nmg->mg_len = mg->mg_len;
6860 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6861 if (mg->mg_ptr && mg->mg_type != 'g') {
6862 if (mg->mg_len >= 0) {
6863 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6864 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6865 AMT *amtp = (AMT*)mg->mg_ptr;
6866 AMT *namtp = (AMT*)nmg->mg_ptr;
6868 for (i = 1; i < NofAMmeth; i++) {
6869 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6873 else if (mg->mg_len == HEf_SVKEY)
6874 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6882 Perl_ptr_table_new(pTHX)
6885 Newz(0, tbl, 1, PTR_TBL_t);
6888 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6893 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6895 PTR_TBL_ENT_t *tblent;
6896 UV hash = PTR2UV(sv);
6898 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6899 for (; tblent; tblent = tblent->next) {
6900 if (tblent->oldval == sv)
6901 return tblent->newval;
6907 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6909 PTR_TBL_ENT_t *tblent, **otblent;
6910 /* XXX this may be pessimal on platforms where pointers aren't good
6911 * hash values e.g. if they grow faster in the most significant
6913 UV hash = PTR2UV(oldv);
6917 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6918 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6919 if (tblent->oldval == oldv) {
6920 tblent->newval = newv;
6925 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6926 tblent->oldval = oldv;
6927 tblent->newval = newv;
6928 tblent->next = *otblent;
6931 if (i && tbl->tbl_items > tbl->tbl_max)
6932 ptr_table_split(tbl);
6936 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6938 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6939 UV oldsize = tbl->tbl_max + 1;
6940 UV newsize = oldsize * 2;
6943 Renew(ary, newsize, PTR_TBL_ENT_t*);
6944 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6945 tbl->tbl_max = --newsize;
6947 for (i=0; i < oldsize; i++, ary++) {
6948 PTR_TBL_ENT_t **curentp, **entp, *ent;
6951 curentp = ary + oldsize;
6952 for (entp = ary, ent = *ary; ent; ent = *entp) {
6953 if ((newsize & PTR2UV(ent->oldval)) != i) {
6955 ent->next = *curentp;
6970 Perl_sv_dup(pTHX_ SV *sstr)
6974 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6976 /* look for it in the table first */
6977 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6981 /* create anew and remember what it is */
6983 ptr_table_store(PL_ptr_table, sstr, dstr);
6986 SvFLAGS(dstr) = SvFLAGS(sstr);
6987 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6988 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6991 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6992 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6993 PL_watch_pvx, SvPVX(sstr));
6996 switch (SvTYPE(sstr)) {
7001 SvANY(dstr) = new_XIV();
7002 SvIVX(dstr) = SvIVX(sstr);
7005 SvANY(dstr) = new_XNV();
7006 SvNVX(dstr) = SvNVX(sstr);
7009 SvANY(dstr) = new_XRV();
7010 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7013 SvANY(dstr) = new_XPV();
7014 SvCUR(dstr) = SvCUR(sstr);
7015 SvLEN(dstr) = SvLEN(sstr);
7017 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7018 else if (SvPVX(sstr) && SvLEN(sstr))
7019 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7021 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7024 SvANY(dstr) = new_XPVIV();
7025 SvCUR(dstr) = SvCUR(sstr);
7026 SvLEN(dstr) = SvLEN(sstr);
7027 SvIVX(dstr) = SvIVX(sstr);
7029 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7030 else if (SvPVX(sstr) && SvLEN(sstr))
7031 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7033 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7036 SvANY(dstr) = new_XPVNV();
7037 SvCUR(dstr) = SvCUR(sstr);
7038 SvLEN(dstr) = SvLEN(sstr);
7039 SvIVX(dstr) = SvIVX(sstr);
7040 SvNVX(dstr) = SvNVX(sstr);
7042 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7043 else if (SvPVX(sstr) && SvLEN(sstr))
7044 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7046 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7049 SvANY(dstr) = new_XPVMG();
7050 SvCUR(dstr) = SvCUR(sstr);
7051 SvLEN(dstr) = SvLEN(sstr);
7052 SvIVX(dstr) = SvIVX(sstr);
7053 SvNVX(dstr) = SvNVX(sstr);
7054 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7055 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7057 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7058 else if (SvPVX(sstr) && SvLEN(sstr))
7059 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7061 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7064 SvANY(dstr) = new_XPVBM();
7065 SvCUR(dstr) = SvCUR(sstr);
7066 SvLEN(dstr) = SvLEN(sstr);
7067 SvIVX(dstr) = SvIVX(sstr);
7068 SvNVX(dstr) = SvNVX(sstr);
7069 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7070 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7072 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7073 else if (SvPVX(sstr) && SvLEN(sstr))
7074 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7076 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7077 BmRARE(dstr) = BmRARE(sstr);
7078 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7079 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7082 SvANY(dstr) = new_XPVLV();
7083 SvCUR(dstr) = SvCUR(sstr);
7084 SvLEN(dstr) = SvLEN(sstr);
7085 SvIVX(dstr) = SvIVX(sstr);
7086 SvNVX(dstr) = SvNVX(sstr);
7087 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7088 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7090 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7091 else if (SvPVX(sstr) && SvLEN(sstr))
7092 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7094 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7095 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7096 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7097 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7098 LvTYPE(dstr) = LvTYPE(sstr);
7101 SvANY(dstr) = new_XPVGV();
7102 SvCUR(dstr) = SvCUR(sstr);
7103 SvLEN(dstr) = SvLEN(sstr);
7104 SvIVX(dstr) = SvIVX(sstr);
7105 SvNVX(dstr) = SvNVX(sstr);
7106 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7107 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7109 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7110 else if (SvPVX(sstr) && SvLEN(sstr))
7111 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7113 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7114 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7115 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7116 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7117 GvFLAGS(dstr) = GvFLAGS(sstr);
7118 GvGP(dstr) = gp_dup(GvGP(sstr));
7119 (void)GpREFCNT_inc(GvGP(dstr));
7122 SvANY(dstr) = new_XPVIO();
7123 SvCUR(dstr) = SvCUR(sstr);
7124 SvLEN(dstr) = SvLEN(sstr);
7125 SvIVX(dstr) = SvIVX(sstr);
7126 SvNVX(dstr) = SvNVX(sstr);
7127 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7128 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7130 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7131 else if (SvPVX(sstr) && SvLEN(sstr))
7132 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7134 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7135 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7136 if (IoOFP(sstr) == IoIFP(sstr))
7137 IoOFP(dstr) = IoIFP(dstr);
7139 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7140 /* PL_rsfp_filters entries have fake IoDIRP() */
7141 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7142 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7144 IoDIRP(dstr) = IoDIRP(sstr);
7145 IoLINES(dstr) = IoLINES(sstr);
7146 IoPAGE(dstr) = IoPAGE(sstr);
7147 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7148 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7149 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7150 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7151 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7152 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7153 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7154 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7155 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7156 IoTYPE(dstr) = IoTYPE(sstr);
7157 IoFLAGS(dstr) = IoFLAGS(sstr);
7160 SvANY(dstr) = new_XPVAV();
7161 SvCUR(dstr) = SvCUR(sstr);
7162 SvLEN(dstr) = SvLEN(sstr);
7163 SvIVX(dstr) = SvIVX(sstr);
7164 SvNVX(dstr) = SvNVX(sstr);
7165 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7166 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7167 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7168 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7169 if (AvARRAY((AV*)sstr)) {
7170 SV **dst_ary, **src_ary;
7171 SSize_t items = AvFILLp((AV*)sstr) + 1;
7173 src_ary = AvARRAY((AV*)sstr);
7174 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7175 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7176 SvPVX(dstr) = (char*)dst_ary;
7177 AvALLOC((AV*)dstr) = dst_ary;
7178 if (AvREAL((AV*)sstr)) {
7180 *dst_ary++ = sv_dup_inc(*src_ary++);
7184 *dst_ary++ = sv_dup(*src_ary++);
7186 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7187 while (items-- > 0) {
7188 *dst_ary++ = &PL_sv_undef;
7192 SvPVX(dstr) = Nullch;
7193 AvALLOC((AV*)dstr) = (SV**)NULL;
7197 SvANY(dstr) = new_XPVHV();
7198 SvCUR(dstr) = SvCUR(sstr);
7199 SvLEN(dstr) = SvLEN(sstr);
7200 SvIVX(dstr) = SvIVX(sstr);
7201 SvNVX(dstr) = SvNVX(sstr);
7202 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7203 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7204 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7205 if (HvARRAY((HV*)sstr)) {
7207 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7208 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7209 Newz(0, dxhv->xhv_array,
7210 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7211 while (i <= sxhv->xhv_max) {
7212 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7213 !!HvSHAREKEYS(sstr));
7216 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7219 SvPVX(dstr) = Nullch;
7220 HvEITER((HV*)dstr) = (HE*)NULL;
7222 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7223 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7226 SvANY(dstr) = new_XPVFM();
7227 FmLINES(dstr) = FmLINES(sstr);
7231 SvANY(dstr) = new_XPVCV();
7233 SvCUR(dstr) = SvCUR(sstr);
7234 SvLEN(dstr) = SvLEN(sstr);
7235 SvIVX(dstr) = SvIVX(sstr);
7236 SvNVX(dstr) = SvNVX(sstr);
7237 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7238 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7239 if (SvPVX(sstr) && SvLEN(sstr))
7240 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7242 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7243 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7244 CvSTART(dstr) = CvSTART(sstr);
7245 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7246 CvXSUB(dstr) = CvXSUB(sstr);
7247 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7248 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7249 CvDEPTH(dstr) = CvDEPTH(sstr);
7250 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7251 /* XXX padlists are real, but pretend to be not */
7252 AvREAL_on(CvPADLIST(sstr));
7253 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7254 AvREAL_off(CvPADLIST(sstr));
7255 AvREAL_off(CvPADLIST(dstr));
7258 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7259 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7260 CvFLAGS(dstr) = CvFLAGS(sstr);
7263 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7267 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7274 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7279 return (PERL_CONTEXT*)NULL;
7281 /* look for it in the table first */
7282 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7286 /* create anew and remember what it is */
7287 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7288 ptr_table_store(PL_ptr_table, cxs, ncxs);
7291 PERL_CONTEXT *cx = &cxs[ix];
7292 PERL_CONTEXT *ncx = &ncxs[ix];
7293 ncx->cx_type = cx->cx_type;
7294 if (CxTYPE(cx) == CXt_SUBST) {
7295 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7298 ncx->blk_oldsp = cx->blk_oldsp;
7299 ncx->blk_oldcop = cx->blk_oldcop;
7300 ncx->blk_oldretsp = cx->blk_oldretsp;
7301 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7302 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7303 ncx->blk_oldpm = cx->blk_oldpm;
7304 ncx->blk_gimme = cx->blk_gimme;
7305 switch (CxTYPE(cx)) {
7307 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7308 ? cv_dup_inc(cx->blk_sub.cv)
7309 : cv_dup(cx->blk_sub.cv));
7310 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7311 ? av_dup_inc(cx->blk_sub.argarray)
7313 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7314 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7315 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7316 ncx->blk_sub.lval = cx->blk_sub.lval;
7319 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7320 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7321 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7322 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7323 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7326 ncx->blk_loop.label = cx->blk_loop.label;
7327 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7328 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7329 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7330 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7331 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7332 ? cx->blk_loop.iterdata
7333 : gv_dup((GV*)cx->blk_loop.iterdata));
7334 ncx->blk_loop.oldcurpad
7335 = (SV**)ptr_table_fetch(PL_ptr_table,
7336 cx->blk_loop.oldcurpad);
7337 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7338 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7339 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7340 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7341 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7344 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7345 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7346 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7347 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7360 Perl_si_dup(pTHX_ PERL_SI *si)
7365 return (PERL_SI*)NULL;
7367 /* look for it in the table first */
7368 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7372 /* create anew and remember what it is */
7373 Newz(56, nsi, 1, PERL_SI);
7374 ptr_table_store(PL_ptr_table, si, nsi);
7376 nsi->si_stack = av_dup_inc(si->si_stack);
7377 nsi->si_cxix = si->si_cxix;
7378 nsi->si_cxmax = si->si_cxmax;
7379 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7380 nsi->si_type = si->si_type;
7381 nsi->si_prev = si_dup(si->si_prev);
7382 nsi->si_next = si_dup(si->si_next);
7383 nsi->si_markoff = si->si_markoff;
7388 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7389 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7390 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7391 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7392 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7393 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7394 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7395 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7396 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7397 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7398 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7399 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7402 #define pv_dup_inc(p) SAVEPV(p)
7403 #define pv_dup(p) SAVEPV(p)
7404 #define svp_dup_inc(p,pp) any_dup(p,pp)
7407 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7414 /* look for it in the table first */
7415 ret = ptr_table_fetch(PL_ptr_table, v);
7419 /* see if it is part of the interpreter structure */
7420 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7421 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7429 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7431 ANY *ss = proto_perl->Tsavestack;
7432 I32 ix = proto_perl->Tsavestack_ix;
7433 I32 max = proto_perl->Tsavestack_max;
7446 void (*dptr) (void*);
7447 void (*dxptr) (pTHXo_ void*);
7450 Newz(54, nss, max, ANY);
7456 case SAVEt_ITEM: /* normal string */
7457 sv = (SV*)POPPTR(ss,ix);
7458 TOPPTR(nss,ix) = sv_dup_inc(sv);
7459 sv = (SV*)POPPTR(ss,ix);
7460 TOPPTR(nss,ix) = sv_dup_inc(sv);
7462 case SAVEt_SV: /* scalar reference */
7463 sv = (SV*)POPPTR(ss,ix);
7464 TOPPTR(nss,ix) = sv_dup_inc(sv);
7465 gv = (GV*)POPPTR(ss,ix);
7466 TOPPTR(nss,ix) = gv_dup_inc(gv);
7468 case SAVEt_GENERIC_PVREF: /* generic char* */
7469 c = (char*)POPPTR(ss,ix);
7470 TOPPTR(nss,ix) = pv_dup(c);
7471 ptr = POPPTR(ss,ix);
7472 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7474 case SAVEt_GENERIC_SVREF: /* generic sv */
7475 case SAVEt_SVREF: /* scalar reference */
7476 sv = (SV*)POPPTR(ss,ix);
7477 TOPPTR(nss,ix) = sv_dup_inc(sv);
7478 ptr = POPPTR(ss,ix);
7479 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7481 case SAVEt_AV: /* array reference */
7482 av = (AV*)POPPTR(ss,ix);
7483 TOPPTR(nss,ix) = av_dup_inc(av);
7484 gv = (GV*)POPPTR(ss,ix);
7485 TOPPTR(nss,ix) = gv_dup(gv);
7487 case SAVEt_HV: /* hash reference */
7488 hv = (HV*)POPPTR(ss,ix);
7489 TOPPTR(nss,ix) = hv_dup_inc(hv);
7490 gv = (GV*)POPPTR(ss,ix);
7491 TOPPTR(nss,ix) = gv_dup(gv);
7493 case SAVEt_INT: /* int reference */
7494 ptr = POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7496 intval = (int)POPINT(ss,ix);
7497 TOPINT(nss,ix) = intval;
7499 case SAVEt_LONG: /* long reference */
7500 ptr = POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7502 longval = (long)POPLONG(ss,ix);
7503 TOPLONG(nss,ix) = longval;
7505 case SAVEt_I32: /* I32 reference */
7506 case SAVEt_I16: /* I16 reference */
7507 case SAVEt_I8: /* I8 reference */
7508 ptr = POPPTR(ss,ix);
7509 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7513 case SAVEt_IV: /* IV reference */
7514 ptr = POPPTR(ss,ix);
7515 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7519 case SAVEt_SPTR: /* SV* reference */
7520 ptr = POPPTR(ss,ix);
7521 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7522 sv = (SV*)POPPTR(ss,ix);
7523 TOPPTR(nss,ix) = sv_dup(sv);
7525 case SAVEt_VPTR: /* random* reference */
7526 ptr = POPPTR(ss,ix);
7527 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7528 ptr = POPPTR(ss,ix);
7529 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7531 case SAVEt_PPTR: /* char* reference */
7532 ptr = POPPTR(ss,ix);
7533 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7534 c = (char*)POPPTR(ss,ix);
7535 TOPPTR(nss,ix) = pv_dup(c);
7537 case SAVEt_HPTR: /* HV* reference */
7538 ptr = POPPTR(ss,ix);
7539 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7540 hv = (HV*)POPPTR(ss,ix);
7541 TOPPTR(nss,ix) = hv_dup(hv);
7543 case SAVEt_APTR: /* AV* reference */
7544 ptr = POPPTR(ss,ix);
7545 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7546 av = (AV*)POPPTR(ss,ix);
7547 TOPPTR(nss,ix) = av_dup(av);
7550 gv = (GV*)POPPTR(ss,ix);
7551 TOPPTR(nss,ix) = gv_dup(gv);
7553 case SAVEt_GP: /* scalar reference */
7554 gp = (GP*)POPPTR(ss,ix);
7555 TOPPTR(nss,ix) = gp = gp_dup(gp);
7556 (void)GpREFCNT_inc(gp);
7557 gv = (GV*)POPPTR(ss,ix);
7558 TOPPTR(nss,ix) = gv_dup_inc(c);
7559 c = (char*)POPPTR(ss,ix);
7560 TOPPTR(nss,ix) = pv_dup(c);
7567 sv = (SV*)POPPTR(ss,ix);
7568 TOPPTR(nss,ix) = sv_dup_inc(sv);
7571 ptr = POPPTR(ss,ix);
7572 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7573 /* these are assumed to be refcounted properly */
7574 switch (((OP*)ptr)->op_type) {
7581 TOPPTR(nss,ix) = ptr;
7586 TOPPTR(nss,ix) = Nullop;
7591 TOPPTR(nss,ix) = Nullop;
7594 c = (char*)POPPTR(ss,ix);
7595 TOPPTR(nss,ix) = pv_dup_inc(c);
7598 longval = POPLONG(ss,ix);
7599 TOPLONG(nss,ix) = longval;
7602 hv = (HV*)POPPTR(ss,ix);
7603 TOPPTR(nss,ix) = hv_dup_inc(hv);
7604 c = (char*)POPPTR(ss,ix);
7605 TOPPTR(nss,ix) = pv_dup_inc(c);
7609 case SAVEt_DESTRUCTOR:
7610 ptr = POPPTR(ss,ix);
7611 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7612 dptr = POPDPTR(ss,ix);
7613 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7615 case SAVEt_DESTRUCTOR_X:
7616 ptr = POPPTR(ss,ix);
7617 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7618 dxptr = POPDXPTR(ss,ix);
7619 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7621 case SAVEt_REGCONTEXT:
7627 case SAVEt_STACK_POS: /* Position on Perl stack */
7631 case SAVEt_AELEM: /* array element */
7632 sv = (SV*)POPPTR(ss,ix);
7633 TOPPTR(nss,ix) = sv_dup_inc(sv);
7636 av = (AV*)POPPTR(ss,ix);
7637 TOPPTR(nss,ix) = av_dup_inc(av);
7639 case SAVEt_HELEM: /* hash element */
7640 sv = (SV*)POPPTR(ss,ix);
7641 TOPPTR(nss,ix) = sv_dup_inc(sv);
7642 sv = (SV*)POPPTR(ss,ix);
7643 TOPPTR(nss,ix) = sv_dup_inc(sv);
7644 hv = (HV*)POPPTR(ss,ix);
7645 TOPPTR(nss,ix) = hv_dup_inc(hv);
7648 ptr = POPPTR(ss,ix);
7649 TOPPTR(nss,ix) = ptr;
7656 av = (AV*)POPPTR(ss,ix);
7657 TOPPTR(nss,ix) = av_dup(av);
7660 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7672 perl_clone(PerlInterpreter *proto_perl, UV flags)
7675 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7678 #ifdef PERL_IMPLICIT_SYS
7679 return perl_clone_using(proto_perl, flags,
7681 proto_perl->IMemShared,
7682 proto_perl->IMemParse,
7692 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7693 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7694 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7695 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7696 struct IPerlDir* ipD, struct IPerlSock* ipS,
7697 struct IPerlProc* ipP)
7699 /* XXX many of the string copies here can be optimized if they're
7700 * constants; they need to be allocated as common memory and just
7701 * their pointers copied. */
7705 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7707 PERL_SET_THX(pPerl);
7708 # else /* !PERL_OBJECT */
7709 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7710 PERL_SET_THX(my_perl);
7713 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7718 # else /* !DEBUGGING */
7719 Zero(my_perl, 1, PerlInterpreter);
7720 # endif /* DEBUGGING */
7724 PL_MemShared = ipMS;
7732 # endif /* PERL_OBJECT */
7733 #else /* !PERL_IMPLICIT_SYS */
7735 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7736 PERL_SET_THX(my_perl);
7739 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7744 # else /* !DEBUGGING */
7745 Zero(my_perl, 1, PerlInterpreter);
7746 # endif /* DEBUGGING */
7747 #endif /* PERL_IMPLICIT_SYS */
7750 PL_xiv_arenaroot = NULL;
7752 PL_xnv_arenaroot = NULL;
7754 PL_xrv_arenaroot = NULL;
7756 PL_xpv_arenaroot = NULL;
7758 PL_xpviv_arenaroot = NULL;
7759 PL_xpviv_root = NULL;
7760 PL_xpvnv_arenaroot = NULL;
7761 PL_xpvnv_root = NULL;
7762 PL_xpvcv_arenaroot = NULL;
7763 PL_xpvcv_root = NULL;
7764 PL_xpvav_arenaroot = NULL;
7765 PL_xpvav_root = NULL;
7766 PL_xpvhv_arenaroot = NULL;
7767 PL_xpvhv_root = NULL;
7768 PL_xpvmg_arenaroot = NULL;
7769 PL_xpvmg_root = NULL;
7770 PL_xpvlv_arenaroot = NULL;
7771 PL_xpvlv_root = NULL;
7772 PL_xpvbm_arenaroot = NULL;
7773 PL_xpvbm_root = NULL;
7774 PL_he_arenaroot = NULL;
7776 PL_nice_chunk = NULL;
7777 PL_nice_chunk_size = 0;
7780 PL_sv_root = Nullsv;
7781 PL_sv_arenaroot = Nullsv;
7783 PL_debug = proto_perl->Idebug;
7785 /* create SV map for pointer relocation */
7786 PL_ptr_table = ptr_table_new();
7788 /* initialize these special pointers as early as possible */
7789 SvANY(&PL_sv_undef) = NULL;
7790 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7791 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7792 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7795 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7797 SvANY(&PL_sv_no) = new_XPVNV();
7799 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7800 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7801 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7802 SvCUR(&PL_sv_no) = 0;
7803 SvLEN(&PL_sv_no) = 1;
7804 SvNVX(&PL_sv_no) = 0;
7805 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7808 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7810 SvANY(&PL_sv_yes) = new_XPVNV();
7812 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7813 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7814 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7815 SvCUR(&PL_sv_yes) = 1;
7816 SvLEN(&PL_sv_yes) = 2;
7817 SvNVX(&PL_sv_yes) = 1;
7818 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7820 /* create shared string table */
7821 PL_strtab = newHV();
7822 HvSHAREKEYS_off(PL_strtab);
7823 hv_ksplit(PL_strtab, 512);
7824 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7826 PL_compiling = proto_perl->Icompiling;
7827 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7828 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7829 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7830 if (!specialWARN(PL_compiling.cop_warnings))
7831 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7832 if (!specialCopIO(PL_compiling.cop_io))
7833 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
7834 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7836 /* pseudo environmental stuff */
7837 PL_origargc = proto_perl->Iorigargc;
7839 New(0, PL_origargv, i+1, char*);
7840 PL_origargv[i] = '\0';
7842 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7844 PL_envgv = gv_dup(proto_perl->Ienvgv);
7845 PL_incgv = gv_dup(proto_perl->Iincgv);
7846 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7847 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7848 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7849 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7852 PL_minus_c = proto_perl->Iminus_c;
7853 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7854 PL_localpatches = proto_perl->Ilocalpatches;
7855 PL_splitstr = proto_perl->Isplitstr;
7856 PL_preprocess = proto_perl->Ipreprocess;
7857 PL_minus_n = proto_perl->Iminus_n;
7858 PL_minus_p = proto_perl->Iminus_p;
7859 PL_minus_l = proto_perl->Iminus_l;
7860 PL_minus_a = proto_perl->Iminus_a;
7861 PL_minus_F = proto_perl->Iminus_F;
7862 PL_doswitches = proto_perl->Idoswitches;
7863 PL_dowarn = proto_perl->Idowarn;
7864 PL_doextract = proto_perl->Idoextract;
7865 PL_sawampersand = proto_perl->Isawampersand;
7866 PL_unsafe = proto_perl->Iunsafe;
7867 PL_inplace = SAVEPV(proto_perl->Iinplace);
7868 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7869 PL_perldb = proto_perl->Iperldb;
7870 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7872 /* magical thingies */
7873 /* XXX time(&PL_basetime) when asked for? */
7874 PL_basetime = proto_perl->Ibasetime;
7875 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7877 PL_maxsysfd = proto_perl->Imaxsysfd;
7878 PL_multiline = proto_perl->Imultiline;
7879 PL_statusvalue = proto_perl->Istatusvalue;
7881 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7884 /* shortcuts to various I/O objects */
7885 PL_stdingv = gv_dup(proto_perl->Istdingv);
7886 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7887 PL_defgv = gv_dup(proto_perl->Idefgv);
7888 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7889 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7890 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7892 /* shortcuts to regexp stuff */
7893 PL_replgv = gv_dup(proto_perl->Ireplgv);
7895 /* shortcuts to misc objects */
7896 PL_errgv = gv_dup(proto_perl->Ierrgv);
7898 /* shortcuts to debugging objects */
7899 PL_DBgv = gv_dup(proto_perl->IDBgv);
7900 PL_DBline = gv_dup(proto_perl->IDBline);
7901 PL_DBsub = gv_dup(proto_perl->IDBsub);
7902 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7903 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7904 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7905 PL_lineary = av_dup(proto_perl->Ilineary);
7906 PL_dbargs = av_dup(proto_perl->Idbargs);
7909 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7910 PL_curstash = hv_dup(proto_perl->Tcurstash);
7911 PL_debstash = hv_dup(proto_perl->Idebstash);
7912 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7913 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7915 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7916 PL_endav = av_dup_inc(proto_perl->Iendav);
7917 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7918 PL_initav = av_dup_inc(proto_perl->Iinitav);
7920 PL_sub_generation = proto_perl->Isub_generation;
7922 /* funky return mechanisms */
7923 PL_forkprocess = proto_perl->Iforkprocess;
7925 /* subprocess state */
7926 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7928 /* internal state */
7929 PL_tainting = proto_perl->Itainting;
7930 PL_maxo = proto_perl->Imaxo;
7931 if (proto_perl->Iop_mask)
7932 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7934 PL_op_mask = Nullch;
7936 /* current interpreter roots */
7937 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7938 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7939 PL_main_start = proto_perl->Imain_start;
7940 PL_eval_root = proto_perl->Ieval_root;
7941 PL_eval_start = proto_perl->Ieval_start;
7943 /* runtime control stuff */
7944 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7945 PL_copline = proto_perl->Icopline;
7947 PL_filemode = proto_perl->Ifilemode;
7948 PL_lastfd = proto_perl->Ilastfd;
7949 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7952 PL_gensym = proto_perl->Igensym;
7953 PL_preambled = proto_perl->Ipreambled;
7954 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7955 PL_laststatval = proto_perl->Ilaststatval;
7956 PL_laststype = proto_perl->Ilaststype;
7957 PL_mess_sv = Nullsv;
7959 PL_orslen = proto_perl->Iorslen;
7960 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7961 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7963 /* interpreter atexit processing */
7964 PL_exitlistlen = proto_perl->Iexitlistlen;
7965 if (PL_exitlistlen) {
7966 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7967 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7970 PL_exitlist = (PerlExitListEntry*)NULL;
7971 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7973 PL_profiledata = NULL;
7974 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7975 /* PL_rsfp_filters entries have fake IoDIRP() */
7976 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7978 PL_compcv = cv_dup(proto_perl->Icompcv);
7979 PL_comppad = av_dup(proto_perl->Icomppad);
7980 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7981 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7982 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7983 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7984 proto_perl->Tcurpad);
7986 #ifdef HAVE_INTERP_INTERN
7987 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7990 /* more statics moved here */
7991 PL_generation = proto_perl->Igeneration;
7992 PL_DBcv = cv_dup(proto_perl->IDBcv);
7994 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7995 PL_in_clean_all = proto_perl->Iin_clean_all;
7997 PL_uid = proto_perl->Iuid;
7998 PL_euid = proto_perl->Ieuid;
7999 PL_gid = proto_perl->Igid;
8000 PL_egid = proto_perl->Iegid;
8001 PL_nomemok = proto_perl->Inomemok;
8002 PL_an = proto_perl->Ian;
8003 PL_cop_seqmax = proto_perl->Icop_seqmax;
8004 PL_op_seqmax = proto_perl->Iop_seqmax;
8005 PL_evalseq = proto_perl->Ievalseq;
8006 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8007 PL_origalen = proto_perl->Iorigalen;
8008 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8009 PL_osname = SAVEPV(proto_perl->Iosname);
8010 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8011 PL_sighandlerp = proto_perl->Isighandlerp;
8014 PL_runops = proto_perl->Irunops;
8016 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8019 PL_cshlen = proto_perl->Icshlen;
8020 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8023 PL_lex_state = proto_perl->Ilex_state;
8024 PL_lex_defer = proto_perl->Ilex_defer;
8025 PL_lex_expect = proto_perl->Ilex_expect;
8026 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8027 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8028 PL_lex_starts = proto_perl->Ilex_starts;
8029 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8030 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8031 PL_lex_op = proto_perl->Ilex_op;
8032 PL_lex_inpat = proto_perl->Ilex_inpat;
8033 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8034 PL_lex_brackets = proto_perl->Ilex_brackets;
8035 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8036 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8037 PL_lex_casemods = proto_perl->Ilex_casemods;
8038 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8039 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8041 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8042 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8043 PL_nexttoke = proto_perl->Inexttoke;
8045 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8046 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8047 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8048 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8049 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8050 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8051 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8052 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8053 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8054 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8055 PL_pending_ident = proto_perl->Ipending_ident;
8056 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8058 PL_expect = proto_perl->Iexpect;
8060 PL_multi_start = proto_perl->Imulti_start;
8061 PL_multi_end = proto_perl->Imulti_end;
8062 PL_multi_open = proto_perl->Imulti_open;
8063 PL_multi_close = proto_perl->Imulti_close;
8065 PL_error_count = proto_perl->Ierror_count;
8066 PL_subline = proto_perl->Isubline;
8067 PL_subname = sv_dup_inc(proto_perl->Isubname);
8069 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8070 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8071 PL_padix = proto_perl->Ipadix;
8072 PL_padix_floor = proto_perl->Ipadix_floor;
8073 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8075 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8076 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8077 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8078 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8079 PL_last_lop_op = proto_perl->Ilast_lop_op;
8080 PL_in_my = proto_perl->Iin_my;
8081 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8083 PL_cryptseen = proto_perl->Icryptseen;
8086 PL_hints = proto_perl->Ihints;
8088 PL_amagic_generation = proto_perl->Iamagic_generation;
8090 #ifdef USE_LOCALE_COLLATE
8091 PL_collation_ix = proto_perl->Icollation_ix;
8092 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8093 PL_collation_standard = proto_perl->Icollation_standard;
8094 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8095 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8096 #endif /* USE_LOCALE_COLLATE */
8098 #ifdef USE_LOCALE_NUMERIC
8099 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8100 PL_numeric_standard = proto_perl->Inumeric_standard;
8101 PL_numeric_local = proto_perl->Inumeric_local;
8102 PL_numeric_radix = proto_perl->Inumeric_radix;
8103 #endif /* !USE_LOCALE_NUMERIC */
8105 /* utf8 character classes */
8106 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8107 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8108 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8109 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8110 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8111 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8112 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8113 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8114 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8115 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8116 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8117 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8118 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8119 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8120 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8121 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8122 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8125 PL_last_swash_hv = Nullhv; /* reinits on demand */
8126 PL_last_swash_klen = 0;
8127 PL_last_swash_key[0]= '\0';
8128 PL_last_swash_tmps = (U8*)NULL;
8129 PL_last_swash_slen = 0;
8131 /* perly.c globals */
8132 PL_yydebug = proto_perl->Iyydebug;
8133 PL_yynerrs = proto_perl->Iyynerrs;
8134 PL_yyerrflag = proto_perl->Iyyerrflag;
8135 PL_yychar = proto_perl->Iyychar;
8136 PL_yyval = proto_perl->Iyyval;
8137 PL_yylval = proto_perl->Iyylval;
8139 PL_glob_index = proto_perl->Iglob_index;
8140 PL_srand_called = proto_perl->Isrand_called;
8141 PL_uudmap['M'] = 0; /* reinits on demand */
8142 PL_bitcount = Nullch; /* reinits on demand */
8144 if (proto_perl->Ipsig_ptr) {
8145 int sig_num[] = { SIG_NUM };
8146 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8147 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8148 for (i = 1; PL_sig_name[i]; i++) {
8149 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8150 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8154 PL_psig_ptr = (SV**)NULL;
8155 PL_psig_name = (SV**)NULL;
8158 /* thrdvar.h stuff */
8161 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8162 PL_tmps_ix = proto_perl->Ttmps_ix;
8163 PL_tmps_max = proto_perl->Ttmps_max;
8164 PL_tmps_floor = proto_perl->Ttmps_floor;
8165 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8167 while (i <= PL_tmps_ix) {
8168 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8172 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8173 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8174 Newz(54, PL_markstack, i, I32);
8175 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8176 - proto_perl->Tmarkstack);
8177 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8178 - proto_perl->Tmarkstack);
8179 Copy(proto_perl->Tmarkstack, PL_markstack,
8180 PL_markstack_ptr - PL_markstack + 1, I32);
8182 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8183 * NOTE: unlike the others! */
8184 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8185 PL_scopestack_max = proto_perl->Tscopestack_max;
8186 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8187 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8189 /* next push_return() sets PL_retstack[PL_retstack_ix]
8190 * NOTE: unlike the others! */
8191 PL_retstack_ix = proto_perl->Tretstack_ix;
8192 PL_retstack_max = proto_perl->Tretstack_max;
8193 Newz(54, PL_retstack, PL_retstack_max, OP*);
8194 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8196 /* NOTE: si_dup() looks at PL_markstack */
8197 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8199 /* PL_curstack = PL_curstackinfo->si_stack; */
8200 PL_curstack = av_dup(proto_perl->Tcurstack);
8201 PL_mainstack = av_dup(proto_perl->Tmainstack);
8203 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8204 PL_stack_base = AvARRAY(PL_curstack);
8205 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8206 - proto_perl->Tstack_base);
8207 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8209 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8210 * NOTE: unlike the others! */
8211 PL_savestack_ix = proto_perl->Tsavestack_ix;
8212 PL_savestack_max = proto_perl->Tsavestack_max;
8213 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8214 PL_savestack = ss_dup(proto_perl);
8218 ENTER; /* perl_destruct() wants to LEAVE; */
8221 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8222 PL_top_env = &PL_start_env;
8224 PL_op = proto_perl->Top;
8227 PL_Xpv = (XPV*)NULL;
8228 PL_na = proto_perl->Tna;
8230 PL_statbuf = proto_perl->Tstatbuf;
8231 PL_statcache = proto_perl->Tstatcache;
8232 PL_statgv = gv_dup(proto_perl->Tstatgv);
8233 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8235 PL_timesbuf = proto_perl->Ttimesbuf;
8238 PL_tainted = proto_perl->Ttainted;
8239 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8240 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8241 PL_rs = sv_dup_inc(proto_perl->Trs);
8242 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8243 PL_ofslen = proto_perl->Tofslen;
8244 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8245 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8246 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8247 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8248 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8249 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8251 PL_restartop = proto_perl->Trestartop;
8252 PL_in_eval = proto_perl->Tin_eval;
8253 PL_delaymagic = proto_perl->Tdelaymagic;
8254 PL_dirty = proto_perl->Tdirty;
8255 PL_localizing = proto_perl->Tlocalizing;
8257 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8258 PL_protect = proto_perl->Tprotect;
8260 PL_errors = sv_dup_inc(proto_perl->Terrors);
8261 PL_av_fetch_sv = Nullsv;
8262 PL_hv_fetch_sv = Nullsv;
8263 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8264 PL_modcount = proto_perl->Tmodcount;
8265 PL_lastgotoprobe = Nullop;
8266 PL_dumpindent = proto_perl->Tdumpindent;
8268 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8269 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8270 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8271 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8272 PL_sortcxix = proto_perl->Tsortcxix;
8273 PL_efloatbuf = Nullch; /* reinits on demand */
8274 PL_efloatsize = 0; /* reinits on demand */
8278 PL_screamfirst = NULL;
8279 PL_screamnext = NULL;
8280 PL_maxscream = -1; /* reinits on demand */
8281 PL_lastscream = Nullsv;
8283 PL_watchaddr = NULL;
8284 PL_watchok = Nullch;
8286 PL_regdummy = proto_perl->Tregdummy;
8287 PL_regcomp_parse = Nullch;
8288 PL_regxend = Nullch;
8289 PL_regcode = (regnode*)NULL;
8292 PL_regprecomp = Nullch;
8297 PL_seen_zerolen = 0;
8299 PL_regcomp_rx = (regexp*)NULL;
8301 PL_colorset = 0; /* reinits PL_colors[] */
8302 /*PL_colors[6] = {0,0,0,0,0,0};*/
8303 PL_reg_whilem_seen = 0;
8304 PL_reginput = Nullch;
8307 PL_regstartp = (I32*)NULL;
8308 PL_regendp = (I32*)NULL;
8309 PL_reglastparen = (U32*)NULL;
8310 PL_regtill = Nullch;
8312 PL_reg_start_tmp = (char**)NULL;
8313 PL_reg_start_tmpl = 0;
8314 PL_regdata = (struct reg_data*)NULL;
8317 PL_reg_eval_set = 0;
8319 PL_regprogram = (regnode*)NULL;
8321 PL_regcc = (CURCUR*)NULL;
8322 PL_reg_call_cc = (struct re_cc_state*)NULL;
8323 PL_reg_re = (regexp*)NULL;
8324 PL_reg_ganch = Nullch;
8326 PL_reg_magic = (MAGIC*)NULL;
8328 PL_reg_oldcurpm = (PMOP*)NULL;
8329 PL_reg_curpm = (PMOP*)NULL;
8330 PL_reg_oldsaved = Nullch;
8331 PL_reg_oldsavedlen = 0;
8333 PL_reg_leftiter = 0;
8334 PL_reg_poscache = Nullch;
8335 PL_reg_poscache_size= 0;
8337 /* RE engine - function pointers */
8338 PL_regcompp = proto_perl->Tregcompp;
8339 PL_regexecp = proto_perl->Tregexecp;
8340 PL_regint_start = proto_perl->Tregint_start;
8341 PL_regint_string = proto_perl->Tregint_string;
8342 PL_regfree = proto_perl->Tregfree;
8344 PL_reginterp_cnt = 0;
8345 PL_reg_starttry = 0;
8348 return (PerlInterpreter*)pPerl;
8354 #else /* !USE_ITHREADS */
8360 #endif /* USE_ITHREADS */
8363 do_report_used(pTHXo_ SV *sv)
8365 if (SvTYPE(sv) != SVTYPEMASK) {
8366 PerlIO_printf(Perl_debug_log, "****\n");
8372 do_clean_objs(pTHXo_ SV *sv)
8376 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8377 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8378 if (SvWEAKREF(sv)) {
8389 /* XXX Might want to check arrays, etc. */
8392 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8394 do_clean_named_objs(pTHXo_ SV *sv)
8396 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8397 if ( SvOBJECT(GvSV(sv)) ||
8398 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8399 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8400 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8401 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8403 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8411 do_clean_all(pTHXo_ SV *sv)
8413 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8414 SvFLAGS(sv) |= SVf_BREAK;