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);
1288 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1289 PL_op_desc[PL_op->op_type]);
1291 (void)SvIOK_only(sv); /* validate number */
1297 =for apidoc sv_setiv_mg
1299 Like C<sv_setiv>, but also handles 'set' magic.
1305 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1312 =for apidoc sv_setuv
1314 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1321 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
1329 =for apidoc sv_setuv_mg
1331 Like C<sv_setuv>, but also handles 'set' magic.
1337 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1344 =for apidoc sv_setnv
1346 Copies a double into the given SV. Does not handle 'set' magic. See
1353 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1355 SV_CHECK_THINKFIRST(sv);
1356 switch (SvTYPE(sv)) {
1359 sv_upgrade(sv, SVt_NV);
1364 sv_upgrade(sv, SVt_PVNV);
1373 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1374 PL_op_name[PL_op->op_type]);
1377 (void)SvNOK_only(sv); /* validate number */
1382 =for apidoc sv_setnv_mg
1384 Like C<sv_setnv>, but also handles 'set' magic.
1390 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1397 S_not_a_number(pTHX_ SV *sv)
1402 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1403 /* each *s can expand to 4 chars + "...\0",
1404 i.e. need room for 8 chars */
1406 for (s = SvPVX(sv); *s && d < limit; s++) {
1408 if (ch & 128 && !isPRINT_LC(ch)) {
1417 else if (ch == '\r') {
1421 else if (ch == '\f') {
1425 else if (ch == '\\') {
1429 else if (isPRINT_LC(ch))
1444 Perl_warner(aTHX_ WARN_NUMERIC,
1445 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1446 PL_op_desc[PL_op->op_type]);
1448 Perl_warner(aTHX_ WARN_NUMERIC,
1449 "Argument \"%s\" isn't numeric", tmpbuf);
1452 /* the number can be converted to integer with atol() or atoll() */
1453 #define IS_NUMBER_TO_INT_BY_ATOL 0x01
1454 #define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1455 #define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1456 #define IS_NUMBER_NEG 0x08 /* not good to cache UV */
1457 #define IS_NUMBER_INFINITY 0x10 /* this is big */
1459 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1460 until proven guilty, assume that things are not that bad... */
1463 Perl_sv_2iv(pTHX_ register SV *sv)
1467 if (SvGMAGICAL(sv)) {
1472 return I_V(SvNVX(sv));
1474 if (SvPOKp(sv) && SvLEN(sv))
1477 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1478 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1484 if (SvTHINKFIRST(sv)) {
1487 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1488 (SvRV(tmpstr) != SvRV(sv)))
1489 return SvIV(tmpstr);
1490 return PTR2IV(SvRV(sv));
1492 if (SvREADONLY(sv) && SvFAKE(sv)) {
1493 sv_force_normal(sv);
1495 if (SvREADONLY(sv) && !SvOK(sv)) {
1496 if (ckWARN(WARN_UNINITIALIZED))
1503 return (IV)(SvUVX(sv));
1510 /* We can cache the IV/UV value even if it not good enough
1511 * to reconstruct NV, since the conversion to PV will prefer
1515 if (SvTYPE(sv) == SVt_NV)
1516 sv_upgrade(sv, SVt_PVNV);
1519 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1520 SvIVX(sv) = I_V(SvNVX(sv));
1522 SvUVX(sv) = U_V(SvNVX(sv));
1525 DEBUG_c(PerlIO_printf(Perl_debug_log,
1526 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1530 return (IV)SvUVX(sv);
1533 else if (SvPOKp(sv) && SvLEN(sv)) {
1534 I32 numtype = looks_like_number(sv);
1536 /* We want to avoid a possible problem when we cache an IV which
1537 may be later translated to an NV, and the resulting NV is not
1538 the translation of the initial data.
1540 This means that if we cache such an IV, we need to cache the
1541 NV as well. Moreover, we trade speed for space, and do not
1542 cache the NV if not needed.
1544 if (numtype & IS_NUMBER_NOT_IV) {
1545 /* May be not an integer. Need to cache NV if we cache IV
1546 * - otherwise future conversion to NV will be wrong. */
1549 d = Atof(SvPVX(sv));
1551 if (SvTYPE(sv) < SVt_PVNV)
1552 sv_upgrade(sv, SVt_PVNV);
1556 #if defined(USE_LONG_DOUBLE)
1557 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1558 PTR2UV(sv), SvNVX(sv)));
1560 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1561 PTR2UV(sv), SvNVX(sv)));
1563 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1564 SvIVX(sv) = I_V(SvNVX(sv));
1566 SvUVX(sv) = U_V(SvNVX(sv));
1571 else { /* The NV may be reconstructed from IV - safe to cache IV,
1572 which may be calculated by atol(). */
1573 if (SvTYPE(sv) < SVt_PVIV)
1574 sv_upgrade(sv, SVt_PVIV);
1576 SvIVX(sv) = Atol(SvPVX(sv));
1577 if (! numtype && ckWARN(WARN_NUMERIC))
1582 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1584 if (SvTYPE(sv) < SVt_IV)
1585 /* Typically the caller expects that sv_any is not NULL now. */
1586 sv_upgrade(sv, SVt_IV);
1589 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1590 PTR2UV(sv),SvIVX(sv)));
1591 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1595 Perl_sv_2uv(pTHX_ register SV *sv)
1599 if (SvGMAGICAL(sv)) {
1604 return U_V(SvNVX(sv));
1605 if (SvPOKp(sv) && SvLEN(sv))
1608 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1609 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1615 if (SvTHINKFIRST(sv)) {
1618 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1619 (SvRV(tmpstr) != SvRV(sv)))
1620 return SvUV(tmpstr);
1621 return PTR2UV(SvRV(sv));
1623 if (SvREADONLY(sv) && !SvOK(sv)) {
1624 if (ckWARN(WARN_UNINITIALIZED))
1634 return (UV)SvIVX(sv);
1638 /* We can cache the IV/UV value even if it not good enough
1639 * to reconstruct NV, since the conversion to PV will prefer
1642 if (SvTYPE(sv) == SVt_NV)
1643 sv_upgrade(sv, SVt_PVNV);
1645 if (SvNVX(sv) >= -0.5) {
1647 SvUVX(sv) = U_V(SvNVX(sv));
1650 SvIVX(sv) = I_V(SvNVX(sv));
1652 DEBUG_c(PerlIO_printf(Perl_debug_log,
1653 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1656 (IV)(UV)SvIVX(sv)));
1657 return (UV)SvIVX(sv);
1660 else if (SvPOKp(sv) && SvLEN(sv)) {
1661 I32 numtype = looks_like_number(sv);
1663 /* We want to avoid a possible problem when we cache a UV which
1664 may be later translated to an NV, and the resulting NV is not
1665 the translation of the initial data.
1667 This means that if we cache such a UV, we need to cache the
1668 NV as well. Moreover, we trade speed for space, and do not
1669 cache the NV if not needed.
1671 if (numtype & IS_NUMBER_NOT_IV) {
1672 /* May be not an integer. Need to cache NV if we cache IV
1673 * - otherwise future conversion to NV will be wrong. */
1676 d = Atof(SvPVX(sv));
1678 if (SvTYPE(sv) < SVt_PVNV)
1679 sv_upgrade(sv, SVt_PVNV);
1683 #if defined(USE_LONG_DOUBLE)
1684 DEBUG_c(PerlIO_printf(Perl_debug_log,
1685 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1686 PTR2UV(sv), SvNVX(sv)));
1688 DEBUG_c(PerlIO_printf(Perl_debug_log,
1689 "0x%"UVxf" 2nv(%g)\n",
1690 PTR2UV(sv), SvNVX(sv)));
1692 if (SvNVX(sv) < -0.5) {
1693 SvIVX(sv) = I_V(SvNVX(sv));
1696 SvUVX(sv) = U_V(SvNVX(sv));
1700 else if (numtype & IS_NUMBER_NEG) {
1701 /* The NV may be reconstructed from IV - safe to cache IV,
1702 which may be calculated by atol(). */
1703 if (SvTYPE(sv) == SVt_PV)
1704 sv_upgrade(sv, SVt_PVIV);
1706 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1708 else if (numtype) { /* Non-negative */
1709 /* The NV may be reconstructed from UV - safe to cache UV,
1710 which may be calculated by strtoul()/atol. */
1711 if (SvTYPE(sv) == SVt_PV)
1712 sv_upgrade(sv, SVt_PVIV);
1714 (void)SvIsUV_on(sv);
1716 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1717 #else /* no atou(), but we know the number fits into IV... */
1718 /* The only problem may be if it is negative... */
1719 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1722 else { /* Not a number. Cache 0. */
1723 if (SvTYPE(sv) < SVt_PVIV)
1724 sv_upgrade(sv, SVt_PVIV);
1726 (void)SvIsUV_on(sv);
1727 SvUVX(sv) = 0; /* We assume that 0s have the
1728 same bitmap in IV and UV. */
1729 if (ckWARN(WARN_NUMERIC))
1734 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1735 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1738 if (SvTYPE(sv) < SVt_IV)
1739 /* Typically the caller expects that sv_any is not NULL now. */
1740 sv_upgrade(sv, SVt_IV);
1744 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1745 PTR2UV(sv),SvUVX(sv)));
1746 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1750 Perl_sv_2nv(pTHX_ register SV *sv)
1754 if (SvGMAGICAL(sv)) {
1758 if (SvPOKp(sv) && SvLEN(sv)) {
1759 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1761 return Atof(SvPVX(sv));
1765 return (NV)SvUVX(sv);
1767 return (NV)SvIVX(sv);
1770 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1771 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1777 if (SvTHINKFIRST(sv)) {
1780 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1781 (SvRV(tmpstr) != SvRV(sv)))
1782 return SvNV(tmpstr);
1783 return PTR2NV(SvRV(sv));
1785 if (SvREADONLY(sv) && !SvOK(sv)) {
1786 if (ckWARN(WARN_UNINITIALIZED))
1791 if (SvTYPE(sv) < SVt_NV) {
1792 if (SvTYPE(sv) == SVt_IV)
1793 sv_upgrade(sv, SVt_PVNV);
1795 sv_upgrade(sv, SVt_NV);
1796 #if defined(USE_LONG_DOUBLE)
1798 STORE_NUMERIC_LOCAL_SET_STANDARD();
1799 PerlIO_printf(Perl_debug_log,
1800 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1801 PTR2UV(sv), SvNVX(sv));
1802 RESTORE_NUMERIC_LOCAL();
1806 STORE_NUMERIC_LOCAL_SET_STANDARD();
1807 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1808 PTR2UV(sv), SvNVX(sv));
1809 RESTORE_NUMERIC_LOCAL();
1813 else if (SvTYPE(sv) < SVt_PVNV)
1814 sv_upgrade(sv, SVt_PVNV);
1816 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1818 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1820 else if (SvPOKp(sv) && SvLEN(sv)) {
1821 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1823 SvNVX(sv) = Atof(SvPVX(sv));
1826 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1828 if (SvTYPE(sv) < SVt_NV)
1829 /* Typically the caller expects that sv_any is not NULL now. */
1830 sv_upgrade(sv, SVt_NV);
1834 #if defined(USE_LONG_DOUBLE)
1836 STORE_NUMERIC_LOCAL_SET_STANDARD();
1837 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1838 PTR2UV(sv), SvNVX(sv));
1839 RESTORE_NUMERIC_LOCAL();
1843 STORE_NUMERIC_LOCAL_SET_STANDARD();
1844 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1845 PTR2UV(sv), SvNVX(sv));
1846 RESTORE_NUMERIC_LOCAL();
1853 S_asIV(pTHX_ SV *sv)
1855 I32 numtype = looks_like_number(sv);
1858 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1859 return Atol(SvPVX(sv));
1861 if (ckWARN(WARN_NUMERIC))
1864 d = Atof(SvPVX(sv));
1869 S_asUV(pTHX_ SV *sv)
1871 I32 numtype = looks_like_number(sv);
1874 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1875 return Strtoul(SvPVX(sv), Null(char**), 10);
1878 if (ckWARN(WARN_NUMERIC))
1881 return U_V(Atof(SvPVX(sv)));
1885 * Returns a combination of (advisory only - can get false negatives)
1886 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1888 * 0 if does not look like number.
1890 * In fact possible values are 0 and
1891 * IS_NUMBER_TO_INT_BY_ATOL 123
1892 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1893 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1894 * IS_NUMBER_INFINITY
1895 * with a possible addition of IS_NUMBER_NEG.
1899 =for apidoc looks_like_number
1901 Test if an the content of an SV looks like a number (or is a
1908 Perl_looks_like_number(pTHX_ SV *sv)
1911 register char *send;
1912 register char *sbegin;
1913 register char *nbegin;
1922 else if (SvPOKp(sv))
1923 sbegin = SvPV(sv, len);
1926 send = sbegin + len;
1933 numtype = IS_NUMBER_NEG;
1940 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1941 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1945 /* next must be digit or the radix separator or beginning of infinity */
1949 } while (isDIGIT(*s));
1951 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1952 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1954 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1957 #ifdef USE_LOCALE_NUMERIC
1958 || IS_NUMERIC_RADIX(*s)
1962 numtype |= IS_NUMBER_NOT_IV;
1963 while (isDIGIT(*s)) /* optional digits after the radix */
1968 #ifdef USE_LOCALE_NUMERIC
1969 || IS_NUMERIC_RADIX(*s)
1973 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1974 /* no digits before the radix means we need digits after it */
1978 } while (isDIGIT(*s));
1983 else if (*s == 'I' || *s == 'i') {
1984 s++; if (*s != 'N' && *s != 'n') return 0;
1985 s++; if (*s != 'F' && *s != 'f') return 0;
1986 s++; if (*s == 'I' || *s == 'i') {
1987 s++; if (*s != 'N' && *s != 'n') return 0;
1988 s++; if (*s != 'I' && *s != 'i') return 0;
1989 s++; if (*s != 'T' && *s != 't') return 0;
1990 s++; if (*s != 'Y' && *s != 'y') return 0;
1999 numtype = IS_NUMBER_INFINITY;
2001 /* we can have an optional exponent part */
2002 if (*s == 'e' || *s == 'E') {
2003 numtype &= ~IS_NUMBER_NEG;
2004 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2006 if (*s == '+' || *s == '-')
2011 } while (isDIGIT(*s));
2021 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2022 return IS_NUMBER_TO_INT_BY_ATOL;
2027 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2030 return sv_2pv(sv, &n_a);
2033 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2035 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2037 char *ptr = buf + TYPE_CHARS(UV);
2051 *--ptr = '0' + (uv % 10);
2060 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2065 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2066 char *tmpbuf = tbuf;
2072 if (SvGMAGICAL(sv)) {
2080 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2082 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2087 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2092 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2093 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2100 if (SvTHINKFIRST(sv)) {
2103 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2104 (SvRV(tmpstr) != SvRV(sv)))
2105 return SvPV(tmpstr,*lp);
2112 switch (SvTYPE(sv)) {
2114 if ( ((SvFLAGS(sv) &
2115 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2116 == (SVs_OBJECT|SVs_RMG))
2117 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2118 && (mg = mg_find(sv, 'r'))) {
2119 regexp *re = (regexp *)mg->mg_obj;
2122 char *fptr = "msix";
2127 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2129 while((ch = *fptr++)) {
2131 reflags[left++] = ch;
2134 reflags[right--] = ch;
2139 reflags[left] = '-';
2143 mg->mg_len = re->prelen + 4 + left;
2144 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2145 Copy("(?", mg->mg_ptr, 2, char);
2146 Copy(reflags, mg->mg_ptr+2, left, char);
2147 Copy(":", mg->mg_ptr+left+2, 1, char);
2148 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2149 mg->mg_ptr[mg->mg_len - 1] = ')';
2150 mg->mg_ptr[mg->mg_len] = 0;
2152 PL_reginterp_cnt += re->program[0].next_off;
2164 case SVt_PVBM: if (SvROK(sv))
2167 s = "SCALAR"; break;
2168 case SVt_PVLV: s = "LVALUE"; break;
2169 case SVt_PVAV: s = "ARRAY"; break;
2170 case SVt_PVHV: s = "HASH"; break;
2171 case SVt_PVCV: s = "CODE"; break;
2172 case SVt_PVGV: s = "GLOB"; break;
2173 case SVt_PVFM: s = "FORMAT"; break;
2174 case SVt_PVIO: s = "IO"; break;
2175 default: s = "UNKNOWN"; break;
2179 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2182 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2188 if (SvREADONLY(sv) && !SvOK(sv)) {
2189 if (ckWARN(WARN_UNINITIALIZED))
2199 else if (SvNOKp(sv)) { /* See note in sv_2uv() */
2200 /* XXXX 64-bit? IV may have better precision... */
2201 /* I tried changing this to be 64-bit-aware and
2202 * the t/op/numconvert.t became very, very, angry.
2204 if (SvTYPE(sv) < SVt_PVNV)
2205 sv_upgrade(sv, SVt_PVNV);
2206 /* The +20 is pure guesswork. Configure test needed. --jhi */
2207 SvGROW(sv, NV_DIG + 20);
2209 olderrno = errno; /* some Xenix systems wipe out errno here */
2211 if (SvNVX(sv) == 0.0)
2212 (void)strcpy(s,"0");
2216 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2219 #ifdef FIXNEGATIVEZERO
2220 if (*s == '-' && s[1] == '0' && !s[2])
2229 else if (SvIOKp(sv)) {
2230 U32 isIOK = SvIOK(sv);
2231 U32 isUIOK = SvIsUV(sv);
2232 char buf[TYPE_CHARS(UV)];
2235 if (SvTYPE(sv) < SVt_PVIV)
2236 sv_upgrade(sv, SVt_PVIV);
2238 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2240 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2241 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2242 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2243 SvCUR_set(sv, ebuf - ptr);
2255 if (ckWARN(WARN_UNINITIALIZED)
2256 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2259 if (SvTYPE(sv) < SVt_PV)
2260 /* Typically the caller expects that sv_any is not NULL now. */
2261 sv_upgrade(sv, SVt_PV);
2264 *lp = s - SvPVX(sv);
2267 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2268 PTR2UV(sv),SvPVX(sv)));
2272 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2273 /* Sneaky stuff here */
2277 tsv = newSVpv(tmpbuf, 0);
2293 len = strlen(tmpbuf);
2295 #ifdef FIXNEGATIVEZERO
2296 if (len == 2 && t[0] == '-' && t[1] == '0') {
2301 (void)SvUPGRADE(sv, SVt_PV);
2303 s = SvGROW(sv, len + 1);
2312 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2315 return sv_2pvbyte(sv, &n_a);
2319 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2321 return sv_2pv(sv,lp);
2325 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2328 return sv_2pvutf8(sv, &n_a);
2332 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2334 sv_utf8_upgrade(sv);
2335 return SvPV(sv,*lp);
2338 /* This function is only called on magical items */
2340 Perl_sv_2bool(pTHX_ register SV *sv)
2349 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2350 (SvRV(tmpsv) != SvRV(sv)))
2351 return SvTRUE(tmpsv);
2352 return SvRV(sv) != 0;
2355 register XPV* Xpvtmp;
2356 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2357 (*Xpvtmp->xpv_pv > '0' ||
2358 Xpvtmp->xpv_cur > 1 ||
2359 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2366 return SvIVX(sv) != 0;
2369 return SvNVX(sv) != 0.0;
2377 =for apidoc sv_utf8_upgrade
2379 Convert the PV of an SV to its UTF8-encoded form.
2385 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2390 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2393 /* This function could be much more efficient if we had a FLAG in SVs
2394 * to signal if there are any hibit chars in the PV.
2396 for (s = t = SvPVX(sv); t < SvEND(sv) && !hibit; t++) {
2405 if (SvREADONLY(sv) && SvFAKE(sv)) {
2406 sv_force_normal(sv);
2409 len = SvCUR(sv) + 1; /* Plus the \0 */
2410 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2411 SvCUR(sv) = len - 1;
2413 Safefree(s); /* No longer using what was there before. */
2414 SvLEN(sv) = len; /* No longer know the real size. */
2420 =for apidoc sv_utf8_downgrade
2422 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2423 This may not be possible if the PV contains non-byte encoding characters;
2424 if this is the case, either returns false or, if C<fail_ok> is not
2431 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2433 if (SvPOK(sv) && SvUTF8(sv)) {
2435 char *c = SvPVX(sv);
2436 STRLEN len = SvCUR(sv);
2438 if (!utf8_to_bytes((U8*)c, &len)) {
2443 Perl_croak(aTHX_ "Wide character in %s",
2444 PL_op_desc[PL_op->op_type]);
2446 Perl_croak(aTHX_ "Wide character");
2458 =for apidoc sv_utf8_encode
2460 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2461 flag so that it looks like bytes again. Nothing calls this.
2467 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2469 sv_utf8_upgrade(sv);
2474 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2478 bool has_utf = FALSE;
2479 if (!sv_utf8_downgrade(sv, TRUE))
2482 /* it is actually just a matter of turning the utf8 flag on, but
2483 * we want to make sure everything inside is valid utf8 first.
2486 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2489 while (c < SvEND(sv)) {
2500 /* Note: sv_setsv() should not be called with a source string that needs
2501 * to be reused, since it may destroy the source string if it is marked
2506 =for apidoc sv_setsv
2508 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2509 The source SV may be destroyed if it is mortal. Does not handle 'set'
2510 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2517 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2519 register U32 sflags;
2525 SV_CHECK_THINKFIRST(dstr);
2527 sstr = &PL_sv_undef;
2528 stype = SvTYPE(sstr);
2529 dtype = SvTYPE(dstr);
2533 /* There's a lot of redundancy below but we're going for speed here */
2538 if (dtype != SVt_PVGV) {
2539 (void)SvOK_off(dstr);
2547 sv_upgrade(dstr, SVt_IV);
2550 sv_upgrade(dstr, SVt_PVNV);
2554 sv_upgrade(dstr, SVt_PVIV);
2557 (void)SvIOK_only(dstr);
2558 SvIVX(dstr) = SvIVX(sstr);
2561 if (SvTAINTED(sstr))
2572 sv_upgrade(dstr, SVt_NV);
2577 sv_upgrade(dstr, SVt_PVNV);
2580 SvNVX(dstr) = SvNVX(sstr);
2581 (void)SvNOK_only(dstr);
2582 if (SvTAINTED(sstr))
2590 sv_upgrade(dstr, SVt_RV);
2591 else if (dtype == SVt_PVGV &&
2592 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2595 if (GvIMPORTED(dstr) != GVf_IMPORTED
2596 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2598 GvIMPORTED_on(dstr);
2609 sv_upgrade(dstr, SVt_PV);
2612 if (dtype < SVt_PVIV)
2613 sv_upgrade(dstr, SVt_PVIV);
2616 if (dtype < SVt_PVNV)
2617 sv_upgrade(dstr, SVt_PVNV);
2624 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2625 PL_op_name[PL_op->op_type]);
2627 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2631 if (dtype <= SVt_PVGV) {
2633 if (dtype != SVt_PVGV) {
2634 char *name = GvNAME(sstr);
2635 STRLEN len = GvNAMELEN(sstr);
2636 sv_upgrade(dstr, SVt_PVGV);
2637 sv_magic(dstr, dstr, '*', Nullch, 0);
2638 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2639 GvNAME(dstr) = savepvn(name, len);
2640 GvNAMELEN(dstr) = len;
2641 SvFAKE_on(dstr); /* can coerce to non-glob */
2643 /* ahem, death to those who redefine active sort subs */
2644 else if (PL_curstackinfo->si_type == PERLSI_SORT
2645 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2646 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2648 (void)SvOK_off(dstr);
2649 GvINTRO_off(dstr); /* one-shot flag */
2651 GvGP(dstr) = gp_ref(GvGP(sstr));
2652 if (SvTAINTED(sstr))
2654 if (GvIMPORTED(dstr) != GVf_IMPORTED
2655 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2657 GvIMPORTED_on(dstr);
2665 if (SvGMAGICAL(sstr)) {
2667 if (SvTYPE(sstr) != stype) {
2668 stype = SvTYPE(sstr);
2669 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2673 if (stype == SVt_PVLV)
2674 (void)SvUPGRADE(dstr, SVt_PVNV);
2676 (void)SvUPGRADE(dstr, stype);
2679 sflags = SvFLAGS(sstr);
2681 if (sflags & SVf_ROK) {
2682 if (dtype >= SVt_PV) {
2683 if (dtype == SVt_PVGV) {
2684 SV *sref = SvREFCNT_inc(SvRV(sstr));
2686 int intro = GvINTRO(dstr);
2691 GvINTRO_off(dstr); /* one-shot flag */
2692 Newz(602,gp, 1, GP);
2693 GvGP(dstr) = gp_ref(gp);
2694 GvSV(dstr) = NEWSV(72,0);
2695 GvLINE(dstr) = CopLINE(PL_curcop);
2696 GvEGV(dstr) = (GV*)dstr;
2699 switch (SvTYPE(sref)) {
2702 SAVESPTR(GvAV(dstr));
2704 dref = (SV*)GvAV(dstr);
2705 GvAV(dstr) = (AV*)sref;
2706 if (!GvIMPORTED_AV(dstr)
2707 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2709 GvIMPORTED_AV_on(dstr);
2714 SAVESPTR(GvHV(dstr));
2716 dref = (SV*)GvHV(dstr);
2717 GvHV(dstr) = (HV*)sref;
2718 if (!GvIMPORTED_HV(dstr)
2719 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2721 GvIMPORTED_HV_on(dstr);
2726 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2727 SvREFCNT_dec(GvCV(dstr));
2728 GvCV(dstr) = Nullcv;
2729 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2730 PL_sub_generation++;
2732 SAVESPTR(GvCV(dstr));
2735 dref = (SV*)GvCV(dstr);
2736 if (GvCV(dstr) != (CV*)sref) {
2737 CV* cv = GvCV(dstr);
2739 if (!GvCVGEN((GV*)dstr) &&
2740 (CvROOT(cv) || CvXSUB(cv)))
2743 /* ahem, death to those who redefine
2744 * active sort subs */
2745 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2746 PL_sortcop == CvSTART(cv))
2748 "Can't redefine active sort subroutine %s",
2749 GvENAME((GV*)dstr));
2750 /* Redefining a sub - warning is mandatory if
2751 it was a const and its value changed. */
2752 if (ckWARN(WARN_REDEFINE)
2754 && (!CvCONST((CV*)sref)
2755 || sv_cmp(cv_const_sv(cv),
2756 cv_const_sv((CV*)sref)))))
2758 Perl_warner(aTHX_ WARN_REDEFINE,
2760 ? "Constant subroutine %s redefined"
2761 : "Subroutine %s redefined",
2762 GvENAME((GV*)dstr));
2765 cv_ckproto(cv, (GV*)dstr,
2766 SvPOK(sref) ? SvPVX(sref) : Nullch);
2768 GvCV(dstr) = (CV*)sref;
2769 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2770 GvASSUMECV_on(dstr);
2771 PL_sub_generation++;
2773 if (!GvIMPORTED_CV(dstr)
2774 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2776 GvIMPORTED_CV_on(dstr);
2781 SAVESPTR(GvIOp(dstr));
2783 dref = (SV*)GvIOp(dstr);
2784 GvIOp(dstr) = (IO*)sref;
2788 SAVESPTR(GvFORM(dstr));
2790 dref = (SV*)GvFORM(dstr);
2791 GvFORM(dstr) = (CV*)sref;
2795 SAVESPTR(GvSV(dstr));
2797 dref = (SV*)GvSV(dstr);
2799 if (!GvIMPORTED_SV(dstr)
2800 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2802 GvIMPORTED_SV_on(dstr);
2810 if (SvTAINTED(sstr))
2815 (void)SvOOK_off(dstr); /* backoff */
2817 Safefree(SvPVX(dstr));
2818 SvLEN(dstr)=SvCUR(dstr)=0;
2821 (void)SvOK_off(dstr);
2822 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2824 if (sflags & SVp_NOK) {
2826 SvNVX(dstr) = SvNVX(sstr);
2828 if (sflags & SVp_IOK) {
2829 (void)SvIOK_on(dstr);
2830 SvIVX(dstr) = SvIVX(sstr);
2831 if (sflags & SVf_IVisUV)
2834 if (SvAMAGIC(sstr)) {
2838 else if (sflags & SVp_POK) {
2841 * Check to see if we can just swipe the string. If so, it's a
2842 * possible small lose on short strings, but a big win on long ones.
2843 * It might even be a win on short strings if SvPVX(dstr)
2844 * has to be allocated and SvPVX(sstr) has to be freed.
2847 if (SvTEMP(sstr) && /* slated for free anyway? */
2848 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2849 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2850 SvLEN(sstr) && /* and really is a string */
2851 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
2853 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2855 SvFLAGS(dstr) &= ~SVf_OOK;
2856 Safefree(SvPVX(dstr) - SvIVX(dstr));
2858 else if (SvLEN(dstr))
2859 Safefree(SvPVX(dstr));
2861 (void)SvPOK_only(dstr);
2862 SvPV_set(dstr, SvPVX(sstr));
2863 SvLEN_set(dstr, SvLEN(sstr));
2864 SvCUR_set(dstr, SvCUR(sstr));
2867 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2868 SvPV_set(sstr, Nullch);
2873 else { /* have to copy actual string */
2874 STRLEN len = SvCUR(sstr);
2876 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2877 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2878 SvCUR_set(dstr, len);
2879 *SvEND(dstr) = '\0';
2880 (void)SvPOK_only(dstr);
2882 if ((sflags & SVf_UTF8) && !IN_BYTE)
2885 if (sflags & SVp_NOK) {
2887 SvNVX(dstr) = SvNVX(sstr);
2889 if (sflags & SVp_IOK) {
2890 (void)SvIOK_on(dstr);
2891 SvIVX(dstr) = SvIVX(sstr);
2892 if (sflags & SVf_IVisUV)
2896 else if (sflags & SVp_NOK) {
2897 SvNVX(dstr) = SvNVX(sstr);
2898 (void)SvNOK_only(dstr);
2899 if (sflags & SVf_IOK) {
2900 (void)SvIOK_on(dstr);
2901 SvIVX(dstr) = SvIVX(sstr);
2902 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2903 if (sflags & SVf_IVisUV)
2907 else if (sflags & SVp_IOK) {
2908 (void)SvIOK_only(dstr);
2909 SvIVX(dstr) = SvIVX(sstr);
2910 if (sflags & SVf_IVisUV)
2914 if (dtype == SVt_PVGV) {
2915 if (ckWARN(WARN_MISC))
2916 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2919 (void)SvOK_off(dstr);
2921 if (SvTAINTED(sstr))
2926 =for apidoc sv_setsv_mg
2928 Like C<sv_setsv>, but also handles 'set' magic.
2934 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2936 sv_setsv(dstr,sstr);
2941 =for apidoc sv_setpvn
2943 Copies a string into an SV. The C<len> parameter indicates the number of
2944 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2950 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2952 register char *dptr;
2954 /* len is STRLEN which is unsigned, need to copy to signed */
2958 SV_CHECK_THINKFIRST(sv);
2963 (void)SvUPGRADE(sv, SVt_PV);
2965 SvGROW(sv, len + 1);
2967 Move(ptr,dptr,len,char);
2970 (void)SvPOK_only(sv); /* validate pointer */
2975 =for apidoc sv_setpvn_mg
2977 Like C<sv_setpvn>, but also handles 'set' magic.
2983 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2985 sv_setpvn(sv,ptr,len);
2990 =for apidoc sv_setpv
2992 Copies a string into an SV. The string must be null-terminated. Does not
2993 handle 'set' magic. See C<sv_setpv_mg>.
2999 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3001 register STRLEN len;
3003 SV_CHECK_THINKFIRST(sv);
3009 (void)SvUPGRADE(sv, SVt_PV);
3011 SvGROW(sv, len + 1);
3012 Move(ptr,SvPVX(sv),len+1,char);
3014 (void)SvPOK_only(sv); /* validate pointer */
3019 =for apidoc sv_setpv_mg
3021 Like C<sv_setpv>, but also handles 'set' magic.
3027 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3034 =for apidoc sv_usepvn
3036 Tells an SV to use C<ptr> to find its string value. Normally the string is
3037 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3038 The C<ptr> should point to memory that was allocated by C<malloc>. The
3039 string length, C<len>, must be supplied. This function will realloc the
3040 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3041 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3042 See C<sv_usepvn_mg>.
3048 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3050 SV_CHECK_THINKFIRST(sv);
3051 (void)SvUPGRADE(sv, SVt_PV);
3056 (void)SvOOK_off(sv);
3057 if (SvPVX(sv) && SvLEN(sv))
3058 Safefree(SvPVX(sv));
3059 Renew(ptr, len+1, char);
3062 SvLEN_set(sv, len+1);
3064 (void)SvPOK_only(sv); /* validate pointer */
3069 =for apidoc sv_usepvn_mg
3071 Like C<sv_usepvn>, but also handles 'set' magic.
3077 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3079 sv_usepvn(sv,ptr,len);
3084 Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags)
3086 if (SvREADONLY(sv)) {
3088 char *pvx = SvPVX(sv);
3089 STRLEN len = SvCUR(sv);
3090 U32 hash = SvUVX(sv);
3091 SvGROW(sv, len + 1);
3092 Move(pvx,SvPVX(sv),len,char);
3096 unsharepvn(pvx,SvUTF8(sv)?-len:len,hash);
3098 else if (PL_curcop != &PL_compiling)
3099 Perl_croak(aTHX_ PL_no_modify);
3102 sv_unref_flags(sv, flags);
3103 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3108 Perl_sv_force_normal(pTHX_ register SV *sv)
3110 sv_force_normal_flags(sv, 0);
3116 Efficient removal of characters from the beginning of the string buffer.
3117 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3118 the string buffer. The C<ptr> becomes the first character of the adjusted
3125 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3129 register STRLEN delta;
3131 if (!ptr || !SvPOKp(sv))
3133 SV_CHECK_THINKFIRST(sv);
3134 if (SvTYPE(sv) < SVt_PVIV)
3135 sv_upgrade(sv,SVt_PVIV);
3138 if (!SvLEN(sv)) { /* make copy of shared string */
3139 char *pvx = SvPVX(sv);
3140 STRLEN len = SvCUR(sv);
3141 SvGROW(sv, len + 1);
3142 Move(pvx,SvPVX(sv),len,char);
3146 SvFLAGS(sv) |= SVf_OOK;
3148 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3149 delta = ptr - SvPVX(sv);
3157 =for apidoc sv_catpvn
3159 Concatenates the string onto the end of the string which is in the SV. The
3160 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3161 'set' magic. See C<sv_catpvn_mg>.
3167 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3172 junk = SvPV_force(sv, tlen);
3173 SvGROW(sv, tlen + len + 1);
3176 Move(ptr,SvPVX(sv)+tlen,len,char);
3179 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3184 =for apidoc sv_catpvn_mg
3186 Like C<sv_catpvn>, but also handles 'set' magic.
3192 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3194 sv_catpvn(sv,ptr,len);
3199 =for apidoc sv_catsv
3201 Concatenates the string from SV C<ssv> onto the end of the string in SV
3202 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3208 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3214 if ((s = SvPV(sstr, len))) {
3215 if (DO_UTF8(sstr)) {
3216 sv_utf8_upgrade(dstr);
3217 sv_catpvn(dstr,s,len);
3221 sv_catpvn(dstr,s,len);
3226 =for apidoc sv_catsv_mg
3228 Like C<sv_catsv>, but also handles 'set' magic.
3234 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3236 sv_catsv(dstr,sstr);
3241 =for apidoc sv_catpv
3243 Concatenates the string onto the end of the string which is in the SV.
3244 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3250 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3252 register STRLEN len;
3258 junk = SvPV_force(sv, tlen);
3260 SvGROW(sv, tlen + len + 1);
3263 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3265 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3270 =for apidoc sv_catpv_mg
3272 Like C<sv_catpv>, but also handles 'set' magic.
3278 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3285 Perl_newSV(pTHX_ STRLEN len)
3291 sv_upgrade(sv, SVt_PV);
3292 SvGROW(sv, len + 1);
3297 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3300 =for apidoc sv_magic
3302 Adds magic to an SV.
3308 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3312 if (SvREADONLY(sv)) {
3313 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3314 Perl_croak(aTHX_ PL_no_modify);
3316 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3317 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3324 (void)SvUPGRADE(sv, SVt_PVMG);
3326 Newz(702,mg, 1, MAGIC);
3327 mg->mg_moremagic = SvMAGIC(sv);
3330 if (!obj || obj == sv || how == '#' || how == 'r')
3333 mg->mg_obj = SvREFCNT_inc(obj);
3334 mg->mg_flags |= MGf_REFCOUNTED;
3337 mg->mg_len = namlen;
3340 mg->mg_ptr = savepvn(name, namlen);
3341 else if (namlen == HEf_SVKEY)
3342 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3346 mg->mg_virtual = &PL_vtbl_sv;
3349 mg->mg_virtual = &PL_vtbl_amagic;
3352 mg->mg_virtual = &PL_vtbl_amagicelem;
3358 mg->mg_virtual = &PL_vtbl_bm;
3361 mg->mg_virtual = &PL_vtbl_regdata;
3364 mg->mg_virtual = &PL_vtbl_regdatum;
3367 mg->mg_virtual = &PL_vtbl_env;
3370 mg->mg_virtual = &PL_vtbl_fm;
3373 mg->mg_virtual = &PL_vtbl_envelem;
3376 mg->mg_virtual = &PL_vtbl_mglob;
3379 mg->mg_virtual = &PL_vtbl_isa;
3382 mg->mg_virtual = &PL_vtbl_isaelem;
3385 mg->mg_virtual = &PL_vtbl_nkeys;
3392 mg->mg_virtual = &PL_vtbl_dbline;
3396 mg->mg_virtual = &PL_vtbl_mutex;
3398 #endif /* USE_THREADS */
3399 #ifdef USE_LOCALE_COLLATE
3401 mg->mg_virtual = &PL_vtbl_collxfrm;
3403 #endif /* USE_LOCALE_COLLATE */
3405 mg->mg_virtual = &PL_vtbl_pack;
3409 mg->mg_virtual = &PL_vtbl_packelem;
3412 mg->mg_virtual = &PL_vtbl_regexp;
3415 mg->mg_virtual = &PL_vtbl_sig;
3418 mg->mg_virtual = &PL_vtbl_sigelem;
3421 mg->mg_virtual = &PL_vtbl_taint;
3425 mg->mg_virtual = &PL_vtbl_uvar;
3428 mg->mg_virtual = &PL_vtbl_vec;
3431 mg->mg_virtual = &PL_vtbl_substr;
3434 mg->mg_virtual = &PL_vtbl_defelem;
3437 mg->mg_virtual = &PL_vtbl_glob;
3440 mg->mg_virtual = &PL_vtbl_arylen;
3443 mg->mg_virtual = &PL_vtbl_pos;
3446 mg->mg_virtual = &PL_vtbl_backref;
3448 case '~': /* Reserved for use by extensions not perl internals. */
3449 /* Useful for attaching extension internal data to perl vars. */
3450 /* Note that multiple extensions may clash if magical scalars */
3451 /* etc holding private data from one are passed to another. */
3455 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3459 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3463 =for apidoc sv_unmagic
3465 Removes magic from an SV.
3471 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3475 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3478 for (mg = *mgp; mg; mg = *mgp) {
3479 if (mg->mg_type == type) {
3480 MGVTBL* vtbl = mg->mg_virtual;
3481 *mgp = mg->mg_moremagic;
3482 if (vtbl && vtbl->svt_free)
3483 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3484 if (mg->mg_ptr && mg->mg_type != 'g')
3485 if (mg->mg_len >= 0)
3486 Safefree(mg->mg_ptr);
3487 else if (mg->mg_len == HEf_SVKEY)
3488 SvREFCNT_dec((SV*)mg->mg_ptr);
3489 if (mg->mg_flags & MGf_REFCOUNTED)
3490 SvREFCNT_dec(mg->mg_obj);
3494 mgp = &mg->mg_moremagic;
3498 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3505 =for apidoc sv_rvweaken
3513 Perl_sv_rvweaken(pTHX_ SV *sv)
3516 if (!SvOK(sv)) /* let undefs pass */
3519 Perl_croak(aTHX_ "Can't weaken a nonreference");
3520 else if (SvWEAKREF(sv)) {
3521 if (ckWARN(WARN_MISC))
3522 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3526 sv_add_backref(tsv, sv);
3533 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3537 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3538 av = (AV*)mg->mg_obj;
3541 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3542 SvREFCNT_dec(av); /* for sv_magic */
3548 S_sv_del_backref(pTHX_ SV *sv)
3555 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3556 Perl_croak(aTHX_ "panic: del_backref");
3557 av = (AV *)mg->mg_obj;
3562 svp[i] = &PL_sv_undef; /* XXX */
3569 =for apidoc sv_insert
3571 Inserts a string at the specified offset/length within the SV. Similar to
3572 the Perl substr() function.
3578 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3582 register char *midend;
3583 register char *bigend;
3589 Perl_croak(aTHX_ "Can't modify non-existent substring");
3590 SvPV_force(bigstr, curlen);
3591 (void)SvPOK_only_UTF8(bigstr);
3592 if (offset + len > curlen) {
3593 SvGROW(bigstr, offset+len+1);
3594 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3595 SvCUR_set(bigstr, offset+len);
3599 i = littlelen - len;
3600 if (i > 0) { /* string might grow */
3601 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3602 mid = big + offset + len;
3603 midend = bigend = big + SvCUR(bigstr);
3606 while (midend > mid) /* shove everything down */
3607 *--bigend = *--midend;
3608 Move(little,big+offset,littlelen,char);
3614 Move(little,SvPVX(bigstr)+offset,len,char);
3619 big = SvPVX(bigstr);
3622 bigend = big + SvCUR(bigstr);
3624 if (midend > bigend)
3625 Perl_croak(aTHX_ "panic: sv_insert");
3627 if (mid - big > bigend - midend) { /* faster to shorten from end */
3629 Move(little, mid, littlelen,char);
3632 i = bigend - midend;
3634 Move(midend, mid, i,char);
3638 SvCUR_set(bigstr, mid - big);
3641 else if ((i = mid - big)) { /* faster from front */
3642 midend -= littlelen;
3644 sv_chop(bigstr,midend-i);
3649 Move(little, mid, littlelen,char);
3651 else if (littlelen) {
3652 midend -= littlelen;
3653 sv_chop(bigstr,midend);
3654 Move(little,midend,littlelen,char);
3657 sv_chop(bigstr,midend);
3663 =for apidoc sv_replace
3665 Make the first argument a copy of the second, then delete the original.
3671 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3673 U32 refcnt = SvREFCNT(sv);
3674 SV_CHECK_THINKFIRST(sv);
3675 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3676 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3677 if (SvMAGICAL(sv)) {
3681 sv_upgrade(nsv, SVt_PVMG);
3682 SvMAGIC(nsv) = SvMAGIC(sv);
3683 SvFLAGS(nsv) |= SvMAGICAL(sv);
3689 assert(!SvREFCNT(sv));
3690 StructCopy(nsv,sv,SV);
3691 SvREFCNT(sv) = refcnt;
3692 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3697 =for apidoc sv_clear
3699 Clear an SV, making it empty. Does not free the memory used by the SV
3706 Perl_sv_clear(pTHX_ register SV *sv)
3710 assert(SvREFCNT(sv) == 0);
3713 if (PL_defstash) { /* Still have a symbol table? */
3718 Zero(&tmpref, 1, SV);
3719 sv_upgrade(&tmpref, SVt_RV);
3721 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3722 SvREFCNT(&tmpref) = 1;
3725 stash = SvSTASH(sv);
3726 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3729 PUSHSTACKi(PERLSI_DESTROY);
3730 SvRV(&tmpref) = SvREFCNT_inc(sv);
3735 call_sv((SV*)GvCV(destructor),
3736 G_DISCARD|G_EVAL|G_KEEPERR);
3742 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3744 del_XRV(SvANY(&tmpref));
3747 if (PL_in_clean_objs)
3748 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3750 /* DESTROY gave object new lease on life */
3756 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3757 SvOBJECT_off(sv); /* Curse the object. */
3758 if (SvTYPE(sv) != SVt_PVIO)
3759 --PL_sv_objcount; /* XXX Might want something more general */
3762 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3765 switch (SvTYPE(sv)) {
3768 IoIFP(sv) != PerlIO_stdin() &&
3769 IoIFP(sv) != PerlIO_stdout() &&
3770 IoIFP(sv) != PerlIO_stderr())
3772 io_close((IO*)sv, FALSE);
3774 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3775 PerlDir_close(IoDIRP(sv));
3776 IoDIRP(sv) = (DIR*)NULL;
3777 Safefree(IoTOP_NAME(sv));
3778 Safefree(IoFMT_NAME(sv));
3779 Safefree(IoBOTTOM_NAME(sv));
3794 SvREFCNT_dec(LvTARG(sv));
3798 Safefree(GvNAME(sv));
3799 /* cannot decrease stash refcount yet, as we might recursively delete
3800 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3801 of stash until current sv is completely gone.
3802 -- JohnPC, 27 Mar 1998 */
3803 stash = GvSTASH(sv);
3809 (void)SvOOK_off(sv);
3817 SvREFCNT_dec(SvRV(sv));
3819 else if (SvPVX(sv) && SvLEN(sv))
3820 Safefree(SvPVX(sv));
3821 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3822 unsharepvn(SvPVX(sv),SvUTF8(sv)?-SvCUR(sv):SvCUR(sv),SvUVX(sv));
3834 switch (SvTYPE(sv)) {
3850 del_XPVIV(SvANY(sv));
3853 del_XPVNV(SvANY(sv));
3856 del_XPVMG(SvANY(sv));
3859 del_XPVLV(SvANY(sv));
3862 del_XPVAV(SvANY(sv));
3865 del_XPVHV(SvANY(sv));
3868 del_XPVCV(SvANY(sv));
3871 del_XPVGV(SvANY(sv));
3872 /* code duplication for increased performance. */
3873 SvFLAGS(sv) &= SVf_BREAK;
3874 SvFLAGS(sv) |= SVTYPEMASK;
3875 /* decrease refcount of the stash that owns this GV, if any */
3877 SvREFCNT_dec(stash);
3878 return; /* not break, SvFLAGS reset already happened */
3880 del_XPVBM(SvANY(sv));
3883 del_XPVFM(SvANY(sv));
3886 del_XPVIO(SvANY(sv));
3889 SvFLAGS(sv) &= SVf_BREAK;
3890 SvFLAGS(sv) |= SVTYPEMASK;
3894 Perl_sv_newref(pTHX_ SV *sv)
3897 ATOMIC_INC(SvREFCNT(sv));
3904 Free the memory used by an SV.
3910 Perl_sv_free(pTHX_ SV *sv)
3912 int refcount_is_zero;
3916 if (SvREFCNT(sv) == 0) {
3917 if (SvFLAGS(sv) & SVf_BREAK)
3919 if (PL_in_clean_all) /* All is fair */
3921 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3922 /* make sure SvREFCNT(sv)==0 happens very seldom */
3923 SvREFCNT(sv) = (~(U32)0)/2;
3926 if (ckWARN_d(WARN_INTERNAL))
3927 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3930 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3931 if (!refcount_is_zero)
3935 if (ckWARN_d(WARN_DEBUGGING))
3936 Perl_warner(aTHX_ WARN_DEBUGGING,
3937 "Attempt to free temp prematurely: SV 0x%"UVxf,
3942 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3943 /* make sure SvREFCNT(sv)==0 happens very seldom */
3944 SvREFCNT(sv) = (~(U32)0)/2;
3955 Returns the length of the string in the SV. See also C<SvCUR>.
3961 Perl_sv_len(pTHX_ register SV *sv)
3970 len = mg_length(sv);
3972 junk = SvPV(sv, len);
3977 =for apidoc sv_len_utf8
3979 Returns the number of characters in the string in an SV, counting wide
3980 UTF8 bytes as a single character.
3986 Perl_sv_len_utf8(pTHX_ register SV *sv)
3993 return mg_length(sv);
3998 U8 *s = (U8*)SvPV(sv, len);
4000 return Perl_utf8_length(aTHX_ s, s + len);
4005 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4010 I32 uoffset = *offsetp;
4016 start = s = (U8*)SvPV(sv, len);
4018 while (s < send && uoffset--)
4022 *offsetp = s - start;
4026 while (s < send && ulen--)
4036 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4045 s = (U8*)SvPV(sv, len);
4047 Perl_croak(aTHX_ "panic: bad byte offset");
4048 send = s + *offsetp;
4055 if (ckWARN_d(WARN_UTF8))
4056 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4066 Returns a boolean indicating whether the strings in the two SVs are
4073 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4080 bool pv1tmp = FALSE;
4081 bool pv2tmp = FALSE;
4088 pv1 = SvPV(sv1, cur1);
4095 pv2 = SvPV(sv2, cur2);
4097 /* do not utf8ize the comparands as a side-effect */
4098 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4100 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4104 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4110 eq = memEQ(pv1, pv2, cur1);
4123 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4124 string in C<sv1> is less than, equal to, or greater than the string in
4131 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4136 bool pv1tmp = FALSE;
4137 bool pv2tmp = FALSE;
4144 pv1 = SvPV(sv1, cur1);
4151 pv2 = SvPV(sv2, cur2);
4153 /* do not utf8ize the comparands as a side-effect */
4154 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4156 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4160 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4166 cmp = cur2 ? -1 : 0;
4170 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4173 cmp = retval < 0 ? -1 : 1;
4174 } else if (cur1 == cur2) {
4177 cmp = cur1 < cur2 ? -1 : 1;
4190 =for apidoc sv_cmp_locale
4192 Compares the strings in two SVs in a locale-aware manner. See
4199 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4201 #ifdef USE_LOCALE_COLLATE
4207 if (PL_collation_standard)
4211 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4213 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4215 if (!pv1 || !len1) {
4226 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4229 return retval < 0 ? -1 : 1;
4232 * When the result of collation is equality, that doesn't mean
4233 * that there are no differences -- some locales exclude some
4234 * characters from consideration. So to avoid false equalities,
4235 * we use the raw string as a tiebreaker.
4241 #endif /* USE_LOCALE_COLLATE */
4243 return sv_cmp(sv1, sv2);
4246 #ifdef USE_LOCALE_COLLATE
4248 * Any scalar variable may carry an 'o' magic that contains the
4249 * scalar data of the variable transformed to such a format that
4250 * a normal memory comparison can be used to compare the data
4251 * according to the locale settings.
4254 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4258 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4259 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4264 Safefree(mg->mg_ptr);
4266 if ((xf = mem_collxfrm(s, len, &xlen))) {
4267 if (SvREADONLY(sv)) {
4270 return xf + sizeof(PL_collation_ix);
4273 sv_magic(sv, 0, 'o', 0, 0);
4274 mg = mg_find(sv, 'o');
4287 if (mg && mg->mg_ptr) {
4289 return mg->mg_ptr + sizeof(PL_collation_ix);
4297 #endif /* USE_LOCALE_COLLATE */
4302 Get a line from the filehandle and store it into the SV, optionally
4303 appending to the currently-stored string.
4309 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4313 register STDCHAR rslast;
4314 register STDCHAR *bp;
4318 SV_CHECK_THINKFIRST(sv);
4319 (void)SvUPGRADE(sv, SVt_PV);
4323 if (RsSNARF(PL_rs)) {
4327 else if (RsRECORD(PL_rs)) {
4328 I32 recsize, bytesread;
4331 /* Grab the size of the record we're getting */
4332 recsize = SvIV(SvRV(PL_rs));
4333 (void)SvPOK_only(sv); /* Validate pointer */
4334 buffer = SvGROW(sv, recsize + 1);
4337 /* VMS wants read instead of fread, because fread doesn't respect */
4338 /* RMS record boundaries. This is not necessarily a good thing to be */
4339 /* doing, but we've got no other real choice */
4340 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4342 bytesread = PerlIO_read(fp, buffer, recsize);
4344 SvCUR_set(sv, bytesread);
4345 buffer[bytesread] = '\0';
4346 if (PerlIO_isutf8(fp))
4350 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4352 else if (RsPARA(PL_rs)) {
4357 /* Get $/ i.e. PL_rs into same encoding as stream wants */
4358 if (PerlIO_isutf8(fp)) {
4359 rsptr = SvPVutf8(PL_rs, rslen);
4362 if (SvUTF8(PL_rs)) {
4363 if (!sv_utf8_downgrade(PL_rs, TRUE)) {
4364 Perl_croak(aTHX_ "Wide character in $/");
4367 rsptr = SvPV(PL_rs, rslen);
4371 rslast = rslen ? rsptr[rslen - 1] : '\0';
4373 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4374 do { /* to make sure file boundaries work right */
4377 i = PerlIO_getc(fp);
4381 PerlIO_ungetc(fp,i);
4387 /* See if we know enough about I/O mechanism to cheat it ! */
4389 /* This used to be #ifdef test - it is made run-time test for ease
4390 of abstracting out stdio interface. One call should be cheap
4391 enough here - and may even be a macro allowing compile
4395 if (PerlIO_fast_gets(fp)) {
4398 * We're going to steal some values from the stdio struct
4399 * and put EVERYTHING in the innermost loop into registers.
4401 register STDCHAR *ptr;
4405 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4406 /* An ungetc()d char is handled separately from the regular
4407 * buffer, so we getc() it back out and stuff it in the buffer.
4409 i = PerlIO_getc(fp);
4410 if (i == EOF) return 0;
4411 *(--((*fp)->_ptr)) = (unsigned char) i;
4415 /* Here is some breathtakingly efficient cheating */
4417 cnt = PerlIO_get_cnt(fp); /* get count into register */
4418 (void)SvPOK_only(sv); /* validate pointer */
4419 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4420 if (cnt > 80 && SvLEN(sv) > append) {
4421 shortbuffered = cnt - SvLEN(sv) + append + 1;
4422 cnt -= shortbuffered;
4426 /* remember that cnt can be negative */
4427 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4432 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4433 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4434 DEBUG_P(PerlIO_printf(Perl_debug_log,
4435 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4436 DEBUG_P(PerlIO_printf(Perl_debug_log,
4437 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4438 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4439 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4444 while (cnt > 0) { /* this | eat */
4446 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4447 goto thats_all_folks; /* screams | sed :-) */
4451 Copy(ptr, bp, cnt, char); /* this | eat */
4452 bp += cnt; /* screams | dust */
4453 ptr += cnt; /* louder | sed :-) */
4458 if (shortbuffered) { /* oh well, must extend */
4459 cnt = shortbuffered;
4461 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4463 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4464 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4468 DEBUG_P(PerlIO_printf(Perl_debug_log,
4469 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4470 PTR2UV(ptr),(long)cnt));
4471 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4472 DEBUG_P(PerlIO_printf(Perl_debug_log,
4473 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4474 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4475 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4476 /* This used to call 'filbuf' in stdio form, but as that behaves like
4477 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4478 another abstraction. */
4479 i = PerlIO_getc(fp); /* get more characters */
4480 DEBUG_P(PerlIO_printf(Perl_debug_log,
4481 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4482 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4483 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4484 cnt = PerlIO_get_cnt(fp);
4485 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4486 DEBUG_P(PerlIO_printf(Perl_debug_log,
4487 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4489 if (i == EOF) /* all done for ever? */
4490 goto thats_really_all_folks;
4492 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4494 SvGROW(sv, bpx + cnt + 2);
4495 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4497 *bp++ = i; /* store character from PerlIO_getc */
4499 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4500 goto thats_all_folks;
4504 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4505 memNE((char*)bp - rslen, rsptr, rslen))
4506 goto screamer; /* go back to the fray */
4507 thats_really_all_folks:
4509 cnt += shortbuffered;
4510 DEBUG_P(PerlIO_printf(Perl_debug_log,
4511 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4512 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4513 DEBUG_P(PerlIO_printf(Perl_debug_log,
4514 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4515 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4516 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4518 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4519 DEBUG_P(PerlIO_printf(Perl_debug_log,
4520 "Screamer: done, len=%ld, string=|%.*s|\n",
4521 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4526 /*The big, slow, and stupid way */
4529 /* Need to work around EPOC SDK features */
4530 /* On WINS: MS VC5 generates calls to _chkstk, */
4531 /* if a `large' stack frame is allocated */
4532 /* gcc on MARM does not generate calls like these */
4538 register STDCHAR *bpe = buf + sizeof(buf);
4540 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4541 ; /* keep reading */
4545 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4546 /* Accomodate broken VAXC compiler, which applies U8 cast to
4547 * both args of ?: operator, causing EOF to change into 255
4549 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4553 sv_catpvn(sv, (char *) buf, cnt);
4555 sv_setpvn(sv, (char *) buf, cnt);
4557 if (i != EOF && /* joy */
4559 SvCUR(sv) < rslen ||
4560 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4564 * If we're reading from a TTY and we get a short read,
4565 * indicating that the user hit his EOF character, we need
4566 * to notice it now, because if we try to read from the TTY
4567 * again, the EOF condition will disappear.
4569 * The comparison of cnt to sizeof(buf) is an optimization
4570 * that prevents unnecessary calls to feof().
4574 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4579 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4580 while (i != EOF) { /* to make sure file boundaries work right */
4581 i = PerlIO_getc(fp);
4583 PerlIO_ungetc(fp,i);
4589 if (PerlIO_isutf8(fp))
4594 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4601 Auto-increment of the value in the SV.
4607 Perl_sv_inc(pTHX_ register SV *sv)
4616 if (SvTHINKFIRST(sv)) {
4617 if (SvREADONLY(sv)) {
4618 if (PL_curcop != &PL_compiling)
4619 Perl_croak(aTHX_ PL_no_modify);
4623 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4625 i = PTR2IV(SvRV(sv));
4630 flags = SvFLAGS(sv);
4631 if (flags & SVp_NOK) {
4632 (void)SvNOK_only(sv);
4636 if (flags & SVp_IOK) {
4638 if (SvUVX(sv) == UV_MAX)
4639 sv_setnv(sv, (NV)UV_MAX + 1.0);
4641 (void)SvIOK_only_UV(sv);
4644 if (SvIVX(sv) == IV_MAX)
4645 sv_setnv(sv, (NV)IV_MAX + 1.0);
4647 (void)SvIOK_only(sv);
4653 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4654 if ((flags & SVTYPEMASK) < SVt_PVNV)
4655 sv_upgrade(sv, SVt_IV);
4656 (void)SvIOK_only(sv);
4661 while (isALPHA(*d)) d++;
4662 while (isDIGIT(*d)) d++;
4664 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4668 while (d >= SvPVX(sv)) {
4676 /* MKS: The original code here died if letters weren't consecutive.
4677 * at least it didn't have to worry about non-C locales. The
4678 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4679 * arranged in order (although not consecutively) and that only
4680 * [A-Za-z] are accepted by isALPHA in the C locale.
4682 if (*d != 'z' && *d != 'Z') {
4683 do { ++*d; } while (!isALPHA(*d));
4686 *(d--) -= 'z' - 'a';
4691 *(d--) -= 'z' - 'a' + 1;
4695 /* oh,oh, the number grew */
4696 SvGROW(sv, SvCUR(sv) + 2);
4698 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4709 Auto-decrement of the value in the SV.
4715 Perl_sv_dec(pTHX_ register SV *sv)
4723 if (SvTHINKFIRST(sv)) {
4724 if (SvREADONLY(sv)) {
4725 if (PL_curcop != &PL_compiling)
4726 Perl_croak(aTHX_ PL_no_modify);
4730 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4732 i = PTR2IV(SvRV(sv));
4737 flags = SvFLAGS(sv);
4738 if (flags & SVp_NOK) {
4740 (void)SvNOK_only(sv);
4743 if (flags & SVp_IOK) {
4745 if (SvUVX(sv) == 0) {
4746 (void)SvIOK_only(sv);
4750 (void)SvIOK_only_UV(sv);
4754 if (SvIVX(sv) == IV_MIN)
4755 sv_setnv(sv, (NV)IV_MIN - 1.0);
4757 (void)SvIOK_only(sv);
4763 if (!(flags & SVp_POK)) {
4764 if ((flags & SVTYPEMASK) < SVt_PVNV)
4765 sv_upgrade(sv, SVt_NV);
4767 (void)SvNOK_only(sv);
4770 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4774 =for apidoc sv_mortalcopy
4776 Creates a new SV which is a copy of the original SV. The new SV is marked
4782 /* Make a string that will exist for the duration of the expression
4783 * evaluation. Actually, it may have to last longer than that, but
4784 * hopefully we won't free it until it has been assigned to a
4785 * permanent location. */
4788 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4793 sv_setsv(sv,oldstr);
4795 PL_tmps_stack[++PL_tmps_ix] = sv;
4801 =for apidoc sv_newmortal
4803 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4809 Perl_sv_newmortal(pTHX)
4814 SvFLAGS(sv) = SVs_TEMP;
4816 PL_tmps_stack[++PL_tmps_ix] = sv;
4821 =for apidoc sv_2mortal
4823 Marks an SV as mortal. The SV will be destroyed when the current context
4829 /* same thing without the copying */
4832 Perl_sv_2mortal(pTHX_ register SV *sv)
4836 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4839 PL_tmps_stack[++PL_tmps_ix] = sv;
4847 Creates a new SV and copies a string into it. The reference count for the
4848 SV is set to 1. If C<len> is zero, Perl will compute the length using
4849 strlen(). For efficiency, consider using C<newSVpvn> instead.
4855 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4862 sv_setpvn(sv,s,len);
4867 =for apidoc newSVpvn
4869 Creates a new SV and copies a string into it. The reference count for the
4870 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4871 string. You are responsible for ensuring that the source string is at least
4878 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4883 sv_setpvn(sv,s,len);
4888 =for apidoc newSVpvn_share
4890 Creates a new SV and populates it with a string from
4891 the string table. Turns on READONLY and FAKE.
4892 The idea here is that as string table is used for shared hash
4893 keys these strings will have SvPVX == HeKEY and hash lookup
4894 will avoid string compare.
4900 Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash)
4903 bool is_utf8 = FALSE;
4909 PERL_HASH(hash, src, len);
4911 sv_upgrade(sv, SVt_PVIV);
4912 SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash);
4924 #if defined(PERL_IMPLICIT_CONTEXT)
4926 Perl_newSVpvf_nocontext(const char* pat, ...)
4931 va_start(args, pat);
4932 sv = vnewSVpvf(pat, &args);
4939 =for apidoc newSVpvf
4941 Creates a new SV an initialize it with the string formatted like
4948 Perl_newSVpvf(pTHX_ const char* pat, ...)
4952 va_start(args, pat);
4953 sv = vnewSVpvf(pat, &args);
4959 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4963 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4970 Creates a new SV and copies a floating point value into it.
4971 The reference count for the SV is set to 1.
4977 Perl_newSVnv(pTHX_ NV n)
4989 Creates a new SV and copies an integer into it. The reference count for the
4996 Perl_newSViv(pTHX_ IV i)
5008 Creates a new SV and copies an unsigned integer into it.
5009 The reference count for the SV is set to 1.
5015 Perl_newSVuv(pTHX_ UV u)
5025 =for apidoc newRV_noinc
5027 Creates an RV wrapper for an SV. The reference count for the original
5028 SV is B<not> incremented.
5034 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5039 sv_upgrade(sv, SVt_RV);
5046 /* newRV_inc is #defined to newRV in sv.h */
5048 Perl_newRV(pTHX_ SV *tmpRef)
5050 return newRV_noinc(SvREFCNT_inc(tmpRef));
5056 Creates a new SV which is an exact duplicate of the original SV.
5061 /* make an exact duplicate of old */
5064 Perl_newSVsv(pTHX_ register SV *old)
5070 if (SvTYPE(old) == SVTYPEMASK) {
5071 if (ckWARN_d(WARN_INTERNAL))
5072 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5087 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5095 char todo[PERL_UCHAR_MAX+1];
5100 if (!*s) { /* reset ?? searches */
5101 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5102 pm->op_pmdynflags &= ~PMdf_USED;
5107 /* reset variables */
5109 if (!HvARRAY(stash))
5112 Zero(todo, 256, char);
5114 i = (unsigned char)*s;
5118 max = (unsigned char)*s++;
5119 for ( ; i <= max; i++) {
5122 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5123 for (entry = HvARRAY(stash)[i];
5125 entry = HeNEXT(entry))
5127 if (!todo[(U8)*HeKEY(entry)])
5129 gv = (GV*)HeVAL(entry);
5131 if (SvTHINKFIRST(sv)) {
5132 if (!SvREADONLY(sv) && SvROK(sv))
5137 if (SvTYPE(sv) >= SVt_PV) {
5139 if (SvPVX(sv) != Nullch)
5146 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5148 #ifdef USE_ENVIRON_ARRAY
5150 environ[0] = Nullch;
5159 Perl_sv_2io(pTHX_ SV *sv)
5165 switch (SvTYPE(sv)) {
5173 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5177 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5179 return sv_2io(SvRV(sv));
5180 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5186 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5193 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5200 return *gvp = Nullgv, Nullcv;
5201 switch (SvTYPE(sv)) {
5220 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5221 tryAMAGICunDEREF(to_cv);
5224 if (SvTYPE(sv) == SVt_PVCV) {
5233 Perl_croak(aTHX_ "Not a subroutine reference");
5238 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5244 if (lref && !GvCVu(gv)) {
5247 tmpsv = NEWSV(704,0);
5248 gv_efullname3(tmpsv, gv, Nullch);
5249 /* XXX this is probably not what they think they're getting.
5250 * It has the same effect as "sub name;", i.e. just a forward
5252 newSUB(start_subparse(FALSE, 0),
5253 newSVOP(OP_CONST, 0, tmpsv),
5258 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5267 Returns true if the SV has a true value by Perl's rules.
5273 Perl_sv_true(pTHX_ register SV *sv)
5279 if ((tXpv = (XPV*)SvANY(sv)) &&
5280 (tXpv->xpv_cur > 1 ||
5281 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5288 return SvIVX(sv) != 0;
5291 return SvNVX(sv) != 0.0;
5293 return sv_2bool(sv);
5299 Perl_sv_iv(pTHX_ register SV *sv)
5303 return (IV)SvUVX(sv);
5310 Perl_sv_uv(pTHX_ register SV *sv)
5315 return (UV)SvIVX(sv);
5321 Perl_sv_nv(pTHX_ register SV *sv)
5329 Perl_sv_pv(pTHX_ SV *sv)
5336 return sv_2pv(sv, &n_a);
5340 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5346 return sv_2pv(sv, lp);
5350 =for apidoc sv_pvn_force
5352 Get a sensible string out of the SV somehow.
5358 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5362 if (SvTHINKFIRST(sv) && !SvROK(sv))
5363 sv_force_normal(sv);
5369 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5370 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5371 PL_op_name[PL_op->op_type]);
5375 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5380 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5381 SvGROW(sv, len + 1);
5382 Move(s,SvPVX(sv),len,char);
5387 SvPOK_on(sv); /* validate pointer */
5389 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5390 PTR2UV(sv),SvPVX(sv)));
5397 Perl_sv_pvbyte(pTHX_ SV *sv)
5403 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5405 return sv_pvn(sv,lp);
5409 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5411 return sv_pvn_force(sv,lp);
5415 Perl_sv_pvutf8(pTHX_ SV *sv)
5417 sv_utf8_upgrade(sv);
5422 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5424 sv_utf8_upgrade(sv);
5425 return sv_pvn(sv,lp);
5429 =for apidoc sv_pvutf8n_force
5431 Get a sensible UTF8-encoded string out of the SV somehow. See
5438 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5440 sv_utf8_upgrade(sv);
5441 return sv_pvn_force(sv,lp);
5445 =for apidoc sv_reftype
5447 Returns a string describing what the SV is a reference to.
5453 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5455 if (ob && SvOBJECT(sv))
5456 return HvNAME(SvSTASH(sv));
5458 switch (SvTYPE(sv)) {
5472 case SVt_PVLV: return "LVALUE";
5473 case SVt_PVAV: return "ARRAY";
5474 case SVt_PVHV: return "HASH";
5475 case SVt_PVCV: return "CODE";
5476 case SVt_PVGV: return "GLOB";
5477 case SVt_PVFM: return "FORMAT";
5478 case SVt_PVIO: return "IO";
5479 default: return "UNKNOWN";
5485 =for apidoc sv_isobject
5487 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5488 object. If the SV is not an RV, or if the object is not blessed, then this
5495 Perl_sv_isobject(pTHX_ SV *sv)
5512 Returns a boolean indicating whether the SV is blessed into the specified
5513 class. This does not check for subtypes; use C<sv_derived_from> to verify
5514 an inheritance relationship.
5520 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5532 return strEQ(HvNAME(SvSTASH(sv)), name);
5538 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5539 it will be upgraded to one. If C<classname> is non-null then the new SV will
5540 be blessed in the specified package. The new SV is returned and its
5541 reference count is 1.
5547 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5553 SV_CHECK_THINKFIRST(rv);
5556 if (SvTYPE(rv) >= SVt_PVMG) {
5557 U32 refcnt = SvREFCNT(rv);
5561 SvREFCNT(rv) = refcnt;
5564 if (SvTYPE(rv) < SVt_RV)
5565 sv_upgrade(rv, SVt_RV);
5566 else if (SvTYPE(rv) > SVt_RV) {
5567 (void)SvOOK_off(rv);
5568 if (SvPVX(rv) && SvLEN(rv))
5569 Safefree(SvPVX(rv));
5579 HV* stash = gv_stashpv(classname, TRUE);
5580 (void)sv_bless(rv, stash);
5586 =for apidoc sv_setref_pv
5588 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5589 argument will be upgraded to an RV. That RV will be modified to point to
5590 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5591 into the SV. The C<classname> argument indicates the package for the
5592 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5593 will be returned and will have a reference count of 1.
5595 Do not use with other Perl types such as HV, AV, SV, CV, because those
5596 objects will become corrupted by the pointer copy process.
5598 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5604 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5607 sv_setsv(rv, &PL_sv_undef);
5611 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5616 =for apidoc sv_setref_iv
5618 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5619 argument will be upgraded to an RV. That RV will be modified to point to
5620 the new SV. The C<classname> argument indicates the package for the
5621 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5622 will be returned and will have a reference count of 1.
5628 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5630 sv_setiv(newSVrv(rv,classname), iv);
5635 =for apidoc sv_setref_nv
5637 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5638 argument will be upgraded to an RV. That RV will be modified to point to
5639 the new SV. The C<classname> argument indicates the package for the
5640 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5641 will be returned and will have a reference count of 1.
5647 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5649 sv_setnv(newSVrv(rv,classname), nv);
5654 =for apidoc sv_setref_pvn
5656 Copies a string into a new SV, optionally blessing the SV. The length of the
5657 string must be specified with C<n>. The C<rv> argument will be upgraded to
5658 an RV. That RV will be modified to point to the new SV. The C<classname>
5659 argument indicates the package for the blessing. Set C<classname> to
5660 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5661 a reference count of 1.
5663 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5669 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5671 sv_setpvn(newSVrv(rv,classname), pv, n);
5676 =for apidoc sv_bless
5678 Blesses an SV into a specified package. The SV must be an RV. The package
5679 must be designated by its stash (see C<gv_stashpv()>). The reference count
5680 of the SV is unaffected.
5686 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5690 Perl_croak(aTHX_ "Can't bless non-reference value");
5692 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5693 if (SvREADONLY(tmpRef))
5694 Perl_croak(aTHX_ PL_no_modify);
5695 if (SvOBJECT(tmpRef)) {
5696 if (SvTYPE(tmpRef) != SVt_PVIO)
5698 SvREFCNT_dec(SvSTASH(tmpRef));
5701 SvOBJECT_on(tmpRef);
5702 if (SvTYPE(tmpRef) != SVt_PVIO)
5704 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5705 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5716 S_sv_unglob(pTHX_ SV *sv)
5720 assert(SvTYPE(sv) == SVt_PVGV);
5725 SvREFCNT_dec(GvSTASH(sv));
5726 GvSTASH(sv) = Nullhv;
5728 sv_unmagic(sv, '*');
5729 Safefree(GvNAME(sv));
5732 /* need to keep SvANY(sv) in the right arena */
5733 xpvmg = new_XPVMG();
5734 StructCopy(SvANY(sv), xpvmg, XPVMG);
5735 del_XPVGV(SvANY(sv));
5738 SvFLAGS(sv) &= ~SVTYPEMASK;
5739 SvFLAGS(sv) |= SVt_PVMG;
5743 =for apidoc sv_unref_flags
5745 Unsets the RV status of the SV, and decrements the reference count of
5746 whatever was being referenced by the RV. This can almost be thought of
5747 as a reversal of C<newSVrv>. The C<cflags> argument can contain
5748 C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented
5749 (otherwise the decrementing is conditional on the reference count being
5750 different from one or the reference being a readonly SV).
5757 Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags)
5761 if (SvWEAKREF(sv)) {
5769 if (SvREFCNT(rv) != 1 || SvREADONLY(rv) || flags) /* SV_IMMEDIATE_UNREF */
5771 else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */
5772 sv_2mortal(rv); /* Schedule for freeing later */
5776 =for apidoc sv_unref
5778 Unsets the RV status of the SV, and decrements the reference count of
5779 whatever was being referenced by the RV. This can almost be thought of
5780 as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
5781 being zero. See C<SvROK_off>.
5787 Perl_sv_unref(pTHX_ SV *sv)
5789 sv_unref_flags(sv, 0);
5793 Perl_sv_taint(pTHX_ SV *sv)
5795 sv_magic((sv), Nullsv, 't', Nullch, 0);
5799 Perl_sv_untaint(pTHX_ SV *sv)
5801 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5802 MAGIC *mg = mg_find(sv, 't');
5809 Perl_sv_tainted(pTHX_ SV *sv)
5811 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5812 MAGIC *mg = mg_find(sv, 't');
5813 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5820 =for apidoc sv_setpviv
5822 Copies an integer into the given SV, also updating its string value.
5823 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5829 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5831 char buf[TYPE_CHARS(UV)];
5833 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5835 sv_setpvn(sv, ptr, ebuf - ptr);
5840 =for apidoc sv_setpviv_mg
5842 Like C<sv_setpviv>, but also handles 'set' magic.
5848 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5850 char buf[TYPE_CHARS(UV)];
5852 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5854 sv_setpvn(sv, ptr, ebuf - ptr);
5858 #if defined(PERL_IMPLICIT_CONTEXT)
5860 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5864 va_start(args, pat);
5865 sv_vsetpvf(sv, pat, &args);
5871 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5875 va_start(args, pat);
5876 sv_vsetpvf_mg(sv, pat, &args);
5882 =for apidoc sv_setpvf
5884 Processes its arguments like C<sprintf> and sets an SV to the formatted
5885 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5891 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5894 va_start(args, pat);
5895 sv_vsetpvf(sv, pat, &args);
5900 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5902 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5906 =for apidoc sv_setpvf_mg
5908 Like C<sv_setpvf>, but also handles 'set' magic.
5914 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5917 va_start(args, pat);
5918 sv_vsetpvf_mg(sv, pat, &args);
5923 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5925 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5929 #if defined(PERL_IMPLICIT_CONTEXT)
5931 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5935 va_start(args, pat);
5936 sv_vcatpvf(sv, pat, &args);
5941 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5945 va_start(args, pat);
5946 sv_vcatpvf_mg(sv, pat, &args);
5952 =for apidoc sv_catpvf
5954 Processes its arguments like C<sprintf> and appends the formatted output
5955 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5956 typically be called after calling this function to handle 'set' magic.
5962 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5965 va_start(args, pat);
5966 sv_vcatpvf(sv, pat, &args);
5971 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5973 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5977 =for apidoc sv_catpvf_mg
5979 Like C<sv_catpvf>, but also handles 'set' magic.
5985 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5988 va_start(args, pat);
5989 sv_vcatpvf_mg(sv, pat, &args);
5994 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5996 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6001 =for apidoc sv_vsetpvfn
6003 Works like C<vcatpvfn> but copies the text into the SV instead of
6010 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6012 sv_setpvn(sv, "", 0);
6013 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
6017 =for apidoc sv_vcatpvfn
6019 Processes its arguments like C<vsprintf> and appends the formatted output
6020 to an SV. Uses an array of SVs if the C style variable argument list is
6021 missing (NULL). When running with taint checks enabled, indicates via
6022 C<maybe_tainted> if results are untrustworthy (often due to the use of
6029 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6036 static char nullstr[] = "(null)";
6039 /* no matter what, this is a string now */
6040 (void)SvPV_force(sv, origlen);
6042 /* special-case "", "%s", and "%_" */
6045 if (patlen == 2 && pat[0] == '%') {
6049 char *s = va_arg(*args, char*);
6050 sv_catpv(sv, s ? s : nullstr);
6052 else if (svix < svmax) {
6053 sv_catsv(sv, *svargs);
6054 if (DO_UTF8(*svargs))
6060 argsv = va_arg(*args, SV*);
6061 sv_catsv(sv, argsv);
6066 /* See comment on '_' below */
6071 patend = (char*)pat + patlen;
6072 for (p = (char*)pat; p < patend; p = q) {
6075 bool vectorize = FALSE;
6082 bool has_precis = FALSE;
6084 bool is_utf = FALSE;
6087 U8 utf8buf[UTF8_MAXLEN+1];
6088 STRLEN esignlen = 0;
6090 char *eptr = Nullch;
6092 /* Times 4: a decimal digit takes more than 3 binary digits.
6093 * NV_DIG: mantissa takes than many decimal digits.
6094 * Plus 32: Playing safe. */
6095 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6096 /* large enough for "%#.#f" --chip */
6097 /* what about long double NVs? --jhi */
6100 U8 *vecstr = Null(U8*);
6112 STRLEN dotstrlen = 1;
6113 I32 epix = 0; /* explicit parameter index */
6114 I32 ewix = 0; /* explicit width index */
6115 bool asterisk = FALSE;
6117 for (q = p; q < patend && *q != '%'; ++q) ;
6119 sv_catpvn(sv, p, q - p);
6148 case '*': /* printf("%*vX",":",$ipv6addr) */
6153 vecsv = va_arg(*args, SV*);
6154 else if (svix < svmax)
6155 vecsv = svargs[svix++];
6158 dotstr = SvPVx(vecsv,dotstrlen);
6186 case '1': case '2': case '3':
6187 case '4': case '5': case '6':
6188 case '7': case '8': case '9':
6191 width = width * 10 + (*q++ - '0');
6193 if (asterisk && ewix == 0) {
6198 } else if (epix == 0) {
6210 i = va_arg(*args, int);
6212 i = (ewix ? ewix <= svmax : svix < svmax) ?
6213 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6215 width = (i < 0) ? -i : i;
6224 i = va_arg(*args, int);
6226 i = (ewix ? ewix <= svmax : svix < svmax)
6227 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6228 precis = (i < 0) ? 0 : i;
6234 precis = precis * 10 + (*q++ - '0');
6241 vecsv = va_arg(*args, SV*);
6242 vecstr = (U8*)SvPVx(vecsv,veclen);
6243 utf = DO_UTF8(vecsv);
6245 else if (epix ? epix <= svmax : svix < svmax) {
6246 vecsv = svargs[epix ? epix-1 : svix++];
6247 vecstr = (U8*)SvPVx(vecsv,veclen);
6248 utf = DO_UTF8(vecsv);
6259 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6270 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6271 if (*(q + 1) == 'l') { /* lld, llf */
6298 uv = va_arg(*args, int);
6300 uv = (epix ? epix <= svmax : svix < svmax) ?
6301 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6302 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6303 eptr = (char*)utf8buf;
6304 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6316 eptr = va_arg(*args, char*);
6318 #ifdef MACOS_TRADITIONAL
6319 /* On MacOS, %#s format is used for Pascal strings */
6324 elen = strlen(eptr);
6327 elen = sizeof nullstr - 1;
6330 else if (epix ? epix <= svmax : svix < svmax) {
6331 argsv = svargs[epix ? epix-1 : svix++];
6332 eptr = SvPVx(argsv, elen);
6333 if (DO_UTF8(argsv)) {
6334 if (has_precis && precis < elen) {
6336 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6339 if (width) { /* fudge width (can't fudge elen) */
6340 width += elen - sv_len_utf8(argsv);
6349 * The "%_" hack might have to be changed someday,
6350 * if ISO or ANSI decide to use '_' for something.
6351 * So we keep it hidden from users' code.
6355 argsv = va_arg(*args,SV*);
6356 eptr = SvPVx(argsv, elen);
6362 if (has_precis && elen > precis)
6372 uv = PTR2UV(va_arg(*args, void*));
6374 uv = (epix ? epix <= svmax : svix < svmax) ?
6375 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6395 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6405 case 'h': iv = (short)va_arg(*args, int); break;
6406 default: iv = va_arg(*args, int); break;
6407 case 'l': iv = va_arg(*args, long); break;
6408 case 'V': iv = va_arg(*args, IV); break;
6410 case 'q': iv = va_arg(*args, Quad_t); break;
6415 iv = (epix ? epix <= svmax : svix < svmax) ?
6416 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6418 case 'h': iv = (short)iv; break;
6420 case 'l': iv = (long)iv; break;
6423 case 'q': iv = (Quad_t)iv; break;
6430 esignbuf[esignlen++] = plus;
6434 esignbuf[esignlen++] = '-';
6478 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6488 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6489 default: uv = va_arg(*args, unsigned); break;
6490 case 'l': uv = va_arg(*args, unsigned long); break;
6491 case 'V': uv = va_arg(*args, UV); break;
6493 case 'q': uv = va_arg(*args, Quad_t); break;
6498 uv = (epix ? epix <= svmax : svix < svmax) ?
6499 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6501 case 'h': uv = (unsigned short)uv; break;
6503 case 'l': uv = (unsigned long)uv; break;
6506 case 'q': uv = (Quad_t)uv; break;
6512 eptr = ebuf + sizeof ebuf;
6518 p = (char*)((c == 'X')
6519 ? "0123456789ABCDEF" : "0123456789abcdef");
6525 esignbuf[esignlen++] = '0';
6526 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6532 *--eptr = '0' + dig;
6534 if (alt && *eptr != '0')
6540 *--eptr = '0' + dig;
6543 esignbuf[esignlen++] = '0';
6544 esignbuf[esignlen++] = 'b';
6547 default: /* it had better be ten or less */
6548 #if defined(PERL_Y2KWARN)
6549 if (ckWARN(WARN_Y2K)) {
6551 char *s = SvPV(sv,n);
6552 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6553 && (n == 2 || !isDIGIT(s[n-3])))
6555 Perl_warner(aTHX_ WARN_Y2K,
6556 "Possible Y2K bug: %%%c %s",
6557 c, "format string following '19'");
6563 *--eptr = '0' + dig;
6564 } while (uv /= base);
6567 elen = (ebuf + sizeof ebuf) - eptr;
6570 zeros = precis - elen;
6571 else if (precis == 0 && elen == 1 && *eptr == '0')
6576 /* FLOATING POINT */
6579 c = 'f'; /* maybe %F isn't supported here */
6585 /* This is evil, but floating point is even more evil */
6589 nv = va_arg(*args, NV);
6591 nv = (epix ? epix <= svmax : svix < svmax) ?
6592 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6595 if (c != 'e' && c != 'E') {
6597 (void)Perl_frexp(nv, &i);
6598 if (i == PERL_INT_MIN)
6599 Perl_die(aTHX_ "panic: frexp");
6601 need = BIT_DIGITS(i);
6603 need += has_precis ? precis : 6; /* known default */
6607 need += 20; /* fudge factor */
6608 if (PL_efloatsize < need) {
6609 Safefree(PL_efloatbuf);
6610 PL_efloatsize = need + 20; /* more fudge */
6611 New(906, PL_efloatbuf, PL_efloatsize, char);
6612 PL_efloatbuf[0] = '\0';
6615 eptr = ebuf + sizeof ebuf;
6618 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6620 /* Copy the one or more characters in a long double
6621 * format before the 'base' ([efgEFG]) character to
6622 * the format string. */
6623 static char const prifldbl[] = PERL_PRIfldbl;
6624 char const *p = prifldbl + sizeof(prifldbl) - 3;
6625 while (p >= prifldbl) { *--eptr = *p--; }
6630 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6635 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6647 /* No taint. Otherwise we are in the strange situation
6648 * where printf() taints but print($float) doesn't.
6650 (void)sprintf(PL_efloatbuf, eptr, nv);
6652 eptr = PL_efloatbuf;
6653 elen = strlen(PL_efloatbuf);
6660 i = SvCUR(sv) - origlen;
6663 case 'h': *(va_arg(*args, short*)) = i; break;
6664 default: *(va_arg(*args, int*)) = i; break;
6665 case 'l': *(va_arg(*args, long*)) = i; break;
6666 case 'V': *(va_arg(*args, IV*)) = i; break;
6668 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6672 else if (epix ? epix <= svmax : svix < svmax)
6673 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6674 continue; /* not "break" */
6681 if (!args && ckWARN(WARN_PRINTF) &&
6682 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6683 SV *msg = sv_newmortal();
6684 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6685 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6688 Perl_sv_catpvf(aTHX_ msg,
6689 "\"%%%c\"", c & 0xFF);
6691 Perl_sv_catpvf(aTHX_ msg,
6692 "\"%%\\%03"UVof"\"",
6695 sv_catpv(msg, "end of string");
6696 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6699 /* output mangled stuff ... */
6705 /* ... right here, because formatting flags should not apply */
6706 SvGROW(sv, SvCUR(sv) + elen + 1);
6708 memcpy(p, eptr, elen);
6711 SvCUR(sv) = p - SvPVX(sv);
6712 continue; /* not "break" */
6715 have = esignlen + zeros + elen;
6716 need = (have > width ? have : width);
6719 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6721 if (esignlen && fill == '0') {
6722 for (i = 0; i < esignlen; i++)
6726 memset(p, fill, gap);
6729 if (esignlen && fill != '0') {
6730 for (i = 0; i < esignlen; i++)
6734 for (i = zeros; i; i--)
6738 memcpy(p, eptr, elen);
6742 memset(p, ' ', gap);
6747 memcpy(p, dotstr, dotstrlen);
6751 vectorize = FALSE; /* done iterating over vecstr */
6756 SvCUR(sv) = p - SvPVX(sv);
6764 #if defined(USE_ITHREADS)
6766 #if defined(USE_THREADS)
6767 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6770 #ifndef GpREFCNT_inc
6771 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6775 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6776 #define av_dup(s) (AV*)sv_dup((SV*)s)
6777 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6778 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6779 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6780 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6781 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6782 #define io_dup(s) (IO*)sv_dup((SV*)s)
6783 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6784 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6785 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6786 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6787 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6790 Perl_re_dup(pTHX_ REGEXP *r)
6792 /* XXX fix when pmop->op_pmregexp becomes shared */
6793 return ReREFCNT_inc(r);
6797 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6801 return (PerlIO*)NULL;
6803 /* look for it in the table first */
6804 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6808 /* create anew and remember what it is */
6809 ret = PerlIO_fdupopen(aTHX_ fp);
6810 ptr_table_store(PL_ptr_table, fp, ret);
6815 Perl_dirp_dup(pTHX_ DIR *dp)
6824 Perl_gp_dup(pTHX_ GP *gp)
6829 /* look for it in the table first */
6830 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6834 /* create anew and remember what it is */
6835 Newz(0, ret, 1, GP);
6836 ptr_table_store(PL_ptr_table, gp, ret);
6839 ret->gp_refcnt = 0; /* must be before any other dups! */
6840 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6841 ret->gp_io = io_dup_inc(gp->gp_io);
6842 ret->gp_form = cv_dup_inc(gp->gp_form);
6843 ret->gp_av = av_dup_inc(gp->gp_av);
6844 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6845 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6846 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6847 ret->gp_cvgen = gp->gp_cvgen;
6848 ret->gp_flags = gp->gp_flags;
6849 ret->gp_line = gp->gp_line;
6850 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6855 Perl_mg_dup(pTHX_ MAGIC *mg)
6857 MAGIC *mgret = (MAGIC*)NULL;
6860 return (MAGIC*)NULL;
6861 /* look for it in the table first */
6862 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6866 for (; mg; mg = mg->mg_moremagic) {
6868 Newz(0, nmg, 1, MAGIC);
6872 mgprev->mg_moremagic = nmg;
6873 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6874 nmg->mg_private = mg->mg_private;
6875 nmg->mg_type = mg->mg_type;
6876 nmg->mg_flags = mg->mg_flags;
6877 if (mg->mg_type == 'r') {
6878 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6881 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6882 ? sv_dup_inc(mg->mg_obj)
6883 : sv_dup(mg->mg_obj);
6885 nmg->mg_len = mg->mg_len;
6886 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6887 if (mg->mg_ptr && mg->mg_type != 'g') {
6888 if (mg->mg_len >= 0) {
6889 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6890 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6891 AMT *amtp = (AMT*)mg->mg_ptr;
6892 AMT *namtp = (AMT*)nmg->mg_ptr;
6894 for (i = 1; i < NofAMmeth; i++) {
6895 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6899 else if (mg->mg_len == HEf_SVKEY)
6900 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6908 Perl_ptr_table_new(pTHX)
6911 Newz(0, tbl, 1, PTR_TBL_t);
6914 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6919 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6921 PTR_TBL_ENT_t *tblent;
6922 UV hash = PTR2UV(sv);
6924 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6925 for (; tblent; tblent = tblent->next) {
6926 if (tblent->oldval == sv)
6927 return tblent->newval;
6933 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6935 PTR_TBL_ENT_t *tblent, **otblent;
6936 /* XXX this may be pessimal on platforms where pointers aren't good
6937 * hash values e.g. if they grow faster in the most significant
6939 UV hash = PTR2UV(oldv);
6943 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6944 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6945 if (tblent->oldval == oldv) {
6946 tblent->newval = newv;
6951 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6952 tblent->oldval = oldv;
6953 tblent->newval = newv;
6954 tblent->next = *otblent;
6957 if (i && tbl->tbl_items > tbl->tbl_max)
6958 ptr_table_split(tbl);
6962 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6964 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6965 UV oldsize = tbl->tbl_max + 1;
6966 UV newsize = oldsize * 2;
6969 Renew(ary, newsize, PTR_TBL_ENT_t*);
6970 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6971 tbl->tbl_max = --newsize;
6973 for (i=0; i < oldsize; i++, ary++) {
6974 PTR_TBL_ENT_t **curentp, **entp, *ent;
6977 curentp = ary + oldsize;
6978 for (entp = ary, ent = *ary; ent; ent = *entp) {
6979 if ((newsize & PTR2UV(ent->oldval)) != i) {
6981 ent->next = *curentp;
6996 Perl_sv_dup(pTHX_ SV *sstr)
7000 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
7002 /* look for it in the table first */
7003 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
7007 /* create anew and remember what it is */
7009 ptr_table_store(PL_ptr_table, sstr, dstr);
7012 SvFLAGS(dstr) = SvFLAGS(sstr);
7013 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
7014 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7017 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7018 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7019 PL_watch_pvx, SvPVX(sstr));
7022 switch (SvTYPE(sstr)) {
7027 SvANY(dstr) = new_XIV();
7028 SvIVX(dstr) = SvIVX(sstr);
7031 SvANY(dstr) = new_XNV();
7032 SvNVX(dstr) = SvNVX(sstr);
7035 SvANY(dstr) = new_XRV();
7036 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7039 SvANY(dstr) = new_XPV();
7040 SvCUR(dstr) = SvCUR(sstr);
7041 SvLEN(dstr) = SvLEN(sstr);
7043 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7044 else if (SvPVX(sstr) && SvLEN(sstr))
7045 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7047 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7050 SvANY(dstr) = new_XPVIV();
7051 SvCUR(dstr) = SvCUR(sstr);
7052 SvLEN(dstr) = SvLEN(sstr);
7053 SvIVX(dstr) = SvIVX(sstr);
7055 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7056 else if (SvPVX(sstr) && SvLEN(sstr))
7057 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7059 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7062 SvANY(dstr) = new_XPVNV();
7063 SvCUR(dstr) = SvCUR(sstr);
7064 SvLEN(dstr) = SvLEN(sstr);
7065 SvIVX(dstr) = SvIVX(sstr);
7066 SvNVX(dstr) = SvNVX(sstr);
7068 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7069 else if (SvPVX(sstr) && SvLEN(sstr))
7070 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7072 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7075 SvANY(dstr) = new_XPVMG();
7076 SvCUR(dstr) = SvCUR(sstr);
7077 SvLEN(dstr) = SvLEN(sstr);
7078 SvIVX(dstr) = SvIVX(sstr);
7079 SvNVX(dstr) = SvNVX(sstr);
7080 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7081 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7083 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7084 else if (SvPVX(sstr) && SvLEN(sstr))
7085 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7087 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7090 SvANY(dstr) = new_XPVBM();
7091 SvCUR(dstr) = SvCUR(sstr);
7092 SvLEN(dstr) = SvLEN(sstr);
7093 SvIVX(dstr) = SvIVX(sstr);
7094 SvNVX(dstr) = SvNVX(sstr);
7095 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7096 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7098 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7099 else if (SvPVX(sstr) && SvLEN(sstr))
7100 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7102 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7103 BmRARE(dstr) = BmRARE(sstr);
7104 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7105 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7108 SvANY(dstr) = new_XPVLV();
7109 SvCUR(dstr) = SvCUR(sstr);
7110 SvLEN(dstr) = SvLEN(sstr);
7111 SvIVX(dstr) = SvIVX(sstr);
7112 SvNVX(dstr) = SvNVX(sstr);
7113 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7114 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7116 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7117 else if (SvPVX(sstr) && SvLEN(sstr))
7118 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7120 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7121 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7122 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7123 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7124 LvTYPE(dstr) = LvTYPE(sstr);
7127 SvANY(dstr) = new_XPVGV();
7128 SvCUR(dstr) = SvCUR(sstr);
7129 SvLEN(dstr) = SvLEN(sstr);
7130 SvIVX(dstr) = SvIVX(sstr);
7131 SvNVX(dstr) = SvNVX(sstr);
7132 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7133 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7135 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7136 else if (SvPVX(sstr) && SvLEN(sstr))
7137 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7139 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7140 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7141 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7142 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7143 GvFLAGS(dstr) = GvFLAGS(sstr);
7144 GvGP(dstr) = gp_dup(GvGP(sstr));
7145 (void)GpREFCNT_inc(GvGP(dstr));
7148 SvANY(dstr) = new_XPVIO();
7149 SvCUR(dstr) = SvCUR(sstr);
7150 SvLEN(dstr) = SvLEN(sstr);
7151 SvIVX(dstr) = SvIVX(sstr);
7152 SvNVX(dstr) = SvNVX(sstr);
7153 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7154 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7156 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7157 else if (SvPVX(sstr) && SvLEN(sstr))
7158 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7160 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7161 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7162 if (IoOFP(sstr) == IoIFP(sstr))
7163 IoOFP(dstr) = IoIFP(dstr);
7165 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7166 /* PL_rsfp_filters entries have fake IoDIRP() */
7167 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7168 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7170 IoDIRP(dstr) = IoDIRP(sstr);
7171 IoLINES(dstr) = IoLINES(sstr);
7172 IoPAGE(dstr) = IoPAGE(sstr);
7173 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7174 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7175 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7176 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7177 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7178 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7179 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7180 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7181 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7182 IoTYPE(dstr) = IoTYPE(sstr);
7183 IoFLAGS(dstr) = IoFLAGS(sstr);
7186 SvANY(dstr) = new_XPVAV();
7187 SvCUR(dstr) = SvCUR(sstr);
7188 SvLEN(dstr) = SvLEN(sstr);
7189 SvIVX(dstr) = SvIVX(sstr);
7190 SvNVX(dstr) = SvNVX(sstr);
7191 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7192 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7193 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7194 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7195 if (AvARRAY((AV*)sstr)) {
7196 SV **dst_ary, **src_ary;
7197 SSize_t items = AvFILLp((AV*)sstr) + 1;
7199 src_ary = AvARRAY((AV*)sstr);
7200 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7201 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7202 SvPVX(dstr) = (char*)dst_ary;
7203 AvALLOC((AV*)dstr) = dst_ary;
7204 if (AvREAL((AV*)sstr)) {
7206 *dst_ary++ = sv_dup_inc(*src_ary++);
7210 *dst_ary++ = sv_dup(*src_ary++);
7212 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7213 while (items-- > 0) {
7214 *dst_ary++ = &PL_sv_undef;
7218 SvPVX(dstr) = Nullch;
7219 AvALLOC((AV*)dstr) = (SV**)NULL;
7223 SvANY(dstr) = new_XPVHV();
7224 SvCUR(dstr) = SvCUR(sstr);
7225 SvLEN(dstr) = SvLEN(sstr);
7226 SvIVX(dstr) = SvIVX(sstr);
7227 SvNVX(dstr) = SvNVX(sstr);
7228 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7229 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7230 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7231 if (HvARRAY((HV*)sstr)) {
7233 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7234 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7235 Newz(0, dxhv->xhv_array,
7236 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7237 while (i <= sxhv->xhv_max) {
7238 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7239 !!HvSHAREKEYS(sstr));
7242 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7245 SvPVX(dstr) = Nullch;
7246 HvEITER((HV*)dstr) = (HE*)NULL;
7248 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7249 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7252 SvANY(dstr) = new_XPVFM();
7253 FmLINES(dstr) = FmLINES(sstr);
7257 SvANY(dstr) = new_XPVCV();
7259 SvCUR(dstr) = SvCUR(sstr);
7260 SvLEN(dstr) = SvLEN(sstr);
7261 SvIVX(dstr) = SvIVX(sstr);
7262 SvNVX(dstr) = SvNVX(sstr);
7263 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7264 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7265 if (SvPVX(sstr) && SvLEN(sstr))
7266 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7268 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7269 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7270 CvSTART(dstr) = CvSTART(sstr);
7271 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7272 CvXSUB(dstr) = CvXSUB(sstr);
7273 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7274 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7275 CvDEPTH(dstr) = CvDEPTH(sstr);
7276 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7277 /* XXX padlists are real, but pretend to be not */
7278 AvREAL_on(CvPADLIST(sstr));
7279 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7280 AvREAL_off(CvPADLIST(sstr));
7281 AvREAL_off(CvPADLIST(dstr));
7284 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7285 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7286 CvFLAGS(dstr) = CvFLAGS(sstr);
7289 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7293 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7300 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7305 return (PERL_CONTEXT*)NULL;
7307 /* look for it in the table first */
7308 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7312 /* create anew and remember what it is */
7313 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7314 ptr_table_store(PL_ptr_table, cxs, ncxs);
7317 PERL_CONTEXT *cx = &cxs[ix];
7318 PERL_CONTEXT *ncx = &ncxs[ix];
7319 ncx->cx_type = cx->cx_type;
7320 if (CxTYPE(cx) == CXt_SUBST) {
7321 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7324 ncx->blk_oldsp = cx->blk_oldsp;
7325 ncx->blk_oldcop = cx->blk_oldcop;
7326 ncx->blk_oldretsp = cx->blk_oldretsp;
7327 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7328 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7329 ncx->blk_oldpm = cx->blk_oldpm;
7330 ncx->blk_gimme = cx->blk_gimme;
7331 switch (CxTYPE(cx)) {
7333 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7334 ? cv_dup_inc(cx->blk_sub.cv)
7335 : cv_dup(cx->blk_sub.cv));
7336 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7337 ? av_dup_inc(cx->blk_sub.argarray)
7339 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7340 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7341 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7342 ncx->blk_sub.lval = cx->blk_sub.lval;
7345 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7346 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7347 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7348 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7349 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7352 ncx->blk_loop.label = cx->blk_loop.label;
7353 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7354 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7355 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7356 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7357 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7358 ? cx->blk_loop.iterdata
7359 : gv_dup((GV*)cx->blk_loop.iterdata));
7360 ncx->blk_loop.oldcurpad
7361 = (SV**)ptr_table_fetch(PL_ptr_table,
7362 cx->blk_loop.oldcurpad);
7363 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7364 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7365 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7366 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7367 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7370 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7371 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7372 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7373 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7386 Perl_si_dup(pTHX_ PERL_SI *si)
7391 return (PERL_SI*)NULL;
7393 /* look for it in the table first */
7394 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7398 /* create anew and remember what it is */
7399 Newz(56, nsi, 1, PERL_SI);
7400 ptr_table_store(PL_ptr_table, si, nsi);
7402 nsi->si_stack = av_dup_inc(si->si_stack);
7403 nsi->si_cxix = si->si_cxix;
7404 nsi->si_cxmax = si->si_cxmax;
7405 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7406 nsi->si_type = si->si_type;
7407 nsi->si_prev = si_dup(si->si_prev);
7408 nsi->si_next = si_dup(si->si_next);
7409 nsi->si_markoff = si->si_markoff;
7414 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7415 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7416 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7417 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7418 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7419 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7420 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7421 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7422 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7423 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7424 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7425 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7428 #define pv_dup_inc(p) SAVEPV(p)
7429 #define pv_dup(p) SAVEPV(p)
7430 #define svp_dup_inc(p,pp) any_dup(p,pp)
7433 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7440 /* look for it in the table first */
7441 ret = ptr_table_fetch(PL_ptr_table, v);
7445 /* see if it is part of the interpreter structure */
7446 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7447 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7455 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7457 ANY *ss = proto_perl->Tsavestack;
7458 I32 ix = proto_perl->Tsavestack_ix;
7459 I32 max = proto_perl->Tsavestack_max;
7472 void (*dptr) (void*);
7473 void (*dxptr) (pTHXo_ void*);
7476 Newz(54, nss, max, ANY);
7482 case SAVEt_ITEM: /* normal string */
7483 sv = (SV*)POPPTR(ss,ix);
7484 TOPPTR(nss,ix) = sv_dup_inc(sv);
7485 sv = (SV*)POPPTR(ss,ix);
7486 TOPPTR(nss,ix) = sv_dup_inc(sv);
7488 case SAVEt_SV: /* scalar reference */
7489 sv = (SV*)POPPTR(ss,ix);
7490 TOPPTR(nss,ix) = sv_dup_inc(sv);
7491 gv = (GV*)POPPTR(ss,ix);
7492 TOPPTR(nss,ix) = gv_dup_inc(gv);
7494 case SAVEt_GENERIC_PVREF: /* generic char* */
7495 c = (char*)POPPTR(ss,ix);
7496 TOPPTR(nss,ix) = pv_dup(c);
7497 ptr = POPPTR(ss,ix);
7498 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7500 case SAVEt_GENERIC_SVREF: /* generic sv */
7501 case SAVEt_SVREF: /* scalar reference */
7502 sv = (SV*)POPPTR(ss,ix);
7503 TOPPTR(nss,ix) = sv_dup_inc(sv);
7504 ptr = POPPTR(ss,ix);
7505 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7507 case SAVEt_AV: /* array reference */
7508 av = (AV*)POPPTR(ss,ix);
7509 TOPPTR(nss,ix) = av_dup_inc(av);
7510 gv = (GV*)POPPTR(ss,ix);
7511 TOPPTR(nss,ix) = gv_dup(gv);
7513 case SAVEt_HV: /* hash reference */
7514 hv = (HV*)POPPTR(ss,ix);
7515 TOPPTR(nss,ix) = hv_dup_inc(hv);
7516 gv = (GV*)POPPTR(ss,ix);
7517 TOPPTR(nss,ix) = gv_dup(gv);
7519 case SAVEt_INT: /* int reference */
7520 ptr = POPPTR(ss,ix);
7521 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7522 intval = (int)POPINT(ss,ix);
7523 TOPINT(nss,ix) = intval;
7525 case SAVEt_LONG: /* long reference */
7526 ptr = POPPTR(ss,ix);
7527 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7528 longval = (long)POPLONG(ss,ix);
7529 TOPLONG(nss,ix) = longval;
7531 case SAVEt_I32: /* I32 reference */
7532 case SAVEt_I16: /* I16 reference */
7533 case SAVEt_I8: /* I8 reference */
7534 ptr = POPPTR(ss,ix);
7535 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7539 case SAVEt_IV: /* IV reference */
7540 ptr = POPPTR(ss,ix);
7541 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7545 case SAVEt_SPTR: /* SV* reference */
7546 ptr = POPPTR(ss,ix);
7547 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7548 sv = (SV*)POPPTR(ss,ix);
7549 TOPPTR(nss,ix) = sv_dup(sv);
7551 case SAVEt_VPTR: /* random* reference */
7552 ptr = POPPTR(ss,ix);
7553 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7554 ptr = POPPTR(ss,ix);
7555 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7557 case SAVEt_PPTR: /* char* reference */
7558 ptr = POPPTR(ss,ix);
7559 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7560 c = (char*)POPPTR(ss,ix);
7561 TOPPTR(nss,ix) = pv_dup(c);
7563 case SAVEt_HPTR: /* HV* reference */
7564 ptr = POPPTR(ss,ix);
7565 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7566 hv = (HV*)POPPTR(ss,ix);
7567 TOPPTR(nss,ix) = hv_dup(hv);
7569 case SAVEt_APTR: /* AV* reference */
7570 ptr = POPPTR(ss,ix);
7571 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7572 av = (AV*)POPPTR(ss,ix);
7573 TOPPTR(nss,ix) = av_dup(av);
7576 gv = (GV*)POPPTR(ss,ix);
7577 TOPPTR(nss,ix) = gv_dup(gv);
7579 case SAVEt_GP: /* scalar reference */
7580 gp = (GP*)POPPTR(ss,ix);
7581 TOPPTR(nss,ix) = gp = gp_dup(gp);
7582 (void)GpREFCNT_inc(gp);
7583 gv = (GV*)POPPTR(ss,ix);
7584 TOPPTR(nss,ix) = gv_dup_inc(c);
7585 c = (char*)POPPTR(ss,ix);
7586 TOPPTR(nss,ix) = pv_dup(c);
7593 sv = (SV*)POPPTR(ss,ix);
7594 TOPPTR(nss,ix) = sv_dup_inc(sv);
7597 ptr = POPPTR(ss,ix);
7598 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7599 /* these are assumed to be refcounted properly */
7600 switch (((OP*)ptr)->op_type) {
7607 TOPPTR(nss,ix) = ptr;
7612 TOPPTR(nss,ix) = Nullop;
7617 TOPPTR(nss,ix) = Nullop;
7620 c = (char*)POPPTR(ss,ix);
7621 TOPPTR(nss,ix) = pv_dup_inc(c);
7624 longval = POPLONG(ss,ix);
7625 TOPLONG(nss,ix) = longval;
7628 hv = (HV*)POPPTR(ss,ix);
7629 TOPPTR(nss,ix) = hv_dup_inc(hv);
7630 c = (char*)POPPTR(ss,ix);
7631 TOPPTR(nss,ix) = pv_dup_inc(c);
7635 case SAVEt_DESTRUCTOR:
7636 ptr = POPPTR(ss,ix);
7637 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7638 dptr = POPDPTR(ss,ix);
7639 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7641 case SAVEt_DESTRUCTOR_X:
7642 ptr = POPPTR(ss,ix);
7643 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7644 dxptr = POPDXPTR(ss,ix);
7645 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7647 case SAVEt_REGCONTEXT:
7653 case SAVEt_STACK_POS: /* Position on Perl stack */
7657 case SAVEt_AELEM: /* array element */
7658 sv = (SV*)POPPTR(ss,ix);
7659 TOPPTR(nss,ix) = sv_dup_inc(sv);
7662 av = (AV*)POPPTR(ss,ix);
7663 TOPPTR(nss,ix) = av_dup_inc(av);
7665 case SAVEt_HELEM: /* hash element */
7666 sv = (SV*)POPPTR(ss,ix);
7667 TOPPTR(nss,ix) = sv_dup_inc(sv);
7668 sv = (SV*)POPPTR(ss,ix);
7669 TOPPTR(nss,ix) = sv_dup_inc(sv);
7670 hv = (HV*)POPPTR(ss,ix);
7671 TOPPTR(nss,ix) = hv_dup_inc(hv);
7674 ptr = POPPTR(ss,ix);
7675 TOPPTR(nss,ix) = ptr;
7682 av = (AV*)POPPTR(ss,ix);
7683 TOPPTR(nss,ix) = av_dup(av);
7686 longval = (long)POPLONG(ss,ix);
7687 TOPLONG(nss,ix) = longval;
7688 ptr = POPPTR(ss,ix);
7689 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7690 sv = (SV*)POPPTR(ss,ix);
7691 TOPPTR(nss,ix) = sv_dup(sv);
7694 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7706 perl_clone(PerlInterpreter *proto_perl, UV flags)
7709 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7712 #ifdef PERL_IMPLICIT_SYS
7713 return perl_clone_using(proto_perl, flags,
7715 proto_perl->IMemShared,
7716 proto_perl->IMemParse,
7726 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7727 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7728 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7729 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7730 struct IPerlDir* ipD, struct IPerlSock* ipS,
7731 struct IPerlProc* ipP)
7733 /* XXX many of the string copies here can be optimized if they're
7734 * constants; they need to be allocated as common memory and just
7735 * their pointers copied. */
7739 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7741 PERL_SET_THX(pPerl);
7742 # else /* !PERL_OBJECT */
7743 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7744 PERL_SET_THX(my_perl);
7747 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7752 # else /* !DEBUGGING */
7753 Zero(my_perl, 1, PerlInterpreter);
7754 # endif /* DEBUGGING */
7758 PL_MemShared = ipMS;
7766 # endif /* PERL_OBJECT */
7767 #else /* !PERL_IMPLICIT_SYS */
7769 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7770 PERL_SET_THX(my_perl);
7773 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7778 # else /* !DEBUGGING */
7779 Zero(my_perl, 1, PerlInterpreter);
7780 # endif /* DEBUGGING */
7781 #endif /* PERL_IMPLICIT_SYS */
7784 PL_xiv_arenaroot = NULL;
7786 PL_xnv_arenaroot = NULL;
7788 PL_xrv_arenaroot = NULL;
7790 PL_xpv_arenaroot = NULL;
7792 PL_xpviv_arenaroot = NULL;
7793 PL_xpviv_root = NULL;
7794 PL_xpvnv_arenaroot = NULL;
7795 PL_xpvnv_root = NULL;
7796 PL_xpvcv_arenaroot = NULL;
7797 PL_xpvcv_root = NULL;
7798 PL_xpvav_arenaroot = NULL;
7799 PL_xpvav_root = NULL;
7800 PL_xpvhv_arenaroot = NULL;
7801 PL_xpvhv_root = NULL;
7802 PL_xpvmg_arenaroot = NULL;
7803 PL_xpvmg_root = NULL;
7804 PL_xpvlv_arenaroot = NULL;
7805 PL_xpvlv_root = NULL;
7806 PL_xpvbm_arenaroot = NULL;
7807 PL_xpvbm_root = NULL;
7808 PL_he_arenaroot = NULL;
7810 PL_nice_chunk = NULL;
7811 PL_nice_chunk_size = 0;
7814 PL_sv_root = Nullsv;
7815 PL_sv_arenaroot = Nullsv;
7817 PL_debug = proto_perl->Idebug;
7819 /* create SV map for pointer relocation */
7820 PL_ptr_table = ptr_table_new();
7822 /* initialize these special pointers as early as possible */
7823 SvANY(&PL_sv_undef) = NULL;
7824 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7825 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7826 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7829 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7831 SvANY(&PL_sv_no) = new_XPVNV();
7833 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7834 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7835 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7836 SvCUR(&PL_sv_no) = 0;
7837 SvLEN(&PL_sv_no) = 1;
7838 SvNVX(&PL_sv_no) = 0;
7839 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7842 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7844 SvANY(&PL_sv_yes) = new_XPVNV();
7846 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7847 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7848 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7849 SvCUR(&PL_sv_yes) = 1;
7850 SvLEN(&PL_sv_yes) = 2;
7851 SvNVX(&PL_sv_yes) = 1;
7852 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7854 /* create shared string table */
7855 PL_strtab = newHV();
7856 HvSHAREKEYS_off(PL_strtab);
7857 hv_ksplit(PL_strtab, 512);
7858 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7860 PL_compiling = proto_perl->Icompiling;
7861 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7862 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7863 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7864 if (!specialWARN(PL_compiling.cop_warnings))
7865 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7866 if (!specialCopIO(PL_compiling.cop_io))
7867 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
7868 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7870 /* pseudo environmental stuff */
7871 PL_origargc = proto_perl->Iorigargc;
7873 New(0, PL_origargv, i+1, char*);
7874 PL_origargv[i] = '\0';
7876 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7878 PL_envgv = gv_dup(proto_perl->Ienvgv);
7879 PL_incgv = gv_dup(proto_perl->Iincgv);
7880 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7881 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7882 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7883 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7886 PL_minus_c = proto_perl->Iminus_c;
7887 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7888 PL_localpatches = proto_perl->Ilocalpatches;
7889 PL_splitstr = proto_perl->Isplitstr;
7890 PL_preprocess = proto_perl->Ipreprocess;
7891 PL_minus_n = proto_perl->Iminus_n;
7892 PL_minus_p = proto_perl->Iminus_p;
7893 PL_minus_l = proto_perl->Iminus_l;
7894 PL_minus_a = proto_perl->Iminus_a;
7895 PL_minus_F = proto_perl->Iminus_F;
7896 PL_doswitches = proto_perl->Idoswitches;
7897 PL_dowarn = proto_perl->Idowarn;
7898 PL_doextract = proto_perl->Idoextract;
7899 PL_sawampersand = proto_perl->Isawampersand;
7900 PL_unsafe = proto_perl->Iunsafe;
7901 PL_inplace = SAVEPV(proto_perl->Iinplace);
7902 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7903 PL_perldb = proto_perl->Iperldb;
7904 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7906 /* magical thingies */
7907 /* XXX time(&PL_basetime) when asked for? */
7908 PL_basetime = proto_perl->Ibasetime;
7909 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7911 PL_maxsysfd = proto_perl->Imaxsysfd;
7912 PL_multiline = proto_perl->Imultiline;
7913 PL_statusvalue = proto_perl->Istatusvalue;
7915 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7918 /* shortcuts to various I/O objects */
7919 PL_stdingv = gv_dup(proto_perl->Istdingv);
7920 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7921 PL_defgv = gv_dup(proto_perl->Idefgv);
7922 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7923 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7924 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7926 /* shortcuts to regexp stuff */
7927 PL_replgv = gv_dup(proto_perl->Ireplgv);
7929 /* shortcuts to misc objects */
7930 PL_errgv = gv_dup(proto_perl->Ierrgv);
7932 /* shortcuts to debugging objects */
7933 PL_DBgv = gv_dup(proto_perl->IDBgv);
7934 PL_DBline = gv_dup(proto_perl->IDBline);
7935 PL_DBsub = gv_dup(proto_perl->IDBsub);
7936 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7937 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7938 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7939 PL_lineary = av_dup(proto_perl->Ilineary);
7940 PL_dbargs = av_dup(proto_perl->Idbargs);
7943 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7944 PL_curstash = hv_dup(proto_perl->Tcurstash);
7945 PL_debstash = hv_dup(proto_perl->Idebstash);
7946 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7947 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7949 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7950 PL_endav = av_dup_inc(proto_perl->Iendav);
7951 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7952 PL_initav = av_dup_inc(proto_perl->Iinitav);
7954 PL_sub_generation = proto_perl->Isub_generation;
7956 /* funky return mechanisms */
7957 PL_forkprocess = proto_perl->Iforkprocess;
7959 /* subprocess state */
7960 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7962 /* internal state */
7963 PL_tainting = proto_perl->Itainting;
7964 PL_maxo = proto_perl->Imaxo;
7965 if (proto_perl->Iop_mask)
7966 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7968 PL_op_mask = Nullch;
7970 /* current interpreter roots */
7971 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7972 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7973 PL_main_start = proto_perl->Imain_start;
7974 PL_eval_root = proto_perl->Ieval_root;
7975 PL_eval_start = proto_perl->Ieval_start;
7977 /* runtime control stuff */
7978 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7979 PL_copline = proto_perl->Icopline;
7981 PL_filemode = proto_perl->Ifilemode;
7982 PL_lastfd = proto_perl->Ilastfd;
7983 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7986 PL_gensym = proto_perl->Igensym;
7987 PL_preambled = proto_perl->Ipreambled;
7988 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7989 PL_laststatval = proto_perl->Ilaststatval;
7990 PL_laststype = proto_perl->Ilaststype;
7991 PL_mess_sv = Nullsv;
7993 PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv);
7994 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7996 /* interpreter atexit processing */
7997 PL_exitlistlen = proto_perl->Iexitlistlen;
7998 if (PL_exitlistlen) {
7999 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8000 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8003 PL_exitlist = (PerlExitListEntry*)NULL;
8004 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
8006 PL_profiledata = NULL;
8007 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
8008 /* PL_rsfp_filters entries have fake IoDIRP() */
8009 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
8011 PL_compcv = cv_dup(proto_perl->Icompcv);
8012 PL_comppad = av_dup(proto_perl->Icomppad);
8013 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
8014 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
8015 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8016 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8017 proto_perl->Tcurpad);
8019 #ifdef HAVE_INTERP_INTERN
8020 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8023 /* more statics moved here */
8024 PL_generation = proto_perl->Igeneration;
8025 PL_DBcv = cv_dup(proto_perl->IDBcv);
8027 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8028 PL_in_clean_all = proto_perl->Iin_clean_all;
8030 PL_uid = proto_perl->Iuid;
8031 PL_euid = proto_perl->Ieuid;
8032 PL_gid = proto_perl->Igid;
8033 PL_egid = proto_perl->Iegid;
8034 PL_nomemok = proto_perl->Inomemok;
8035 PL_an = proto_perl->Ian;
8036 PL_cop_seqmax = proto_perl->Icop_seqmax;
8037 PL_op_seqmax = proto_perl->Iop_seqmax;
8038 PL_evalseq = proto_perl->Ievalseq;
8039 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8040 PL_origalen = proto_perl->Iorigalen;
8041 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8042 PL_osname = SAVEPV(proto_perl->Iosname);
8043 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8044 PL_sighandlerp = proto_perl->Isighandlerp;
8047 PL_runops = proto_perl->Irunops;
8049 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8052 PL_cshlen = proto_perl->Icshlen;
8053 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8056 PL_lex_state = proto_perl->Ilex_state;
8057 PL_lex_defer = proto_perl->Ilex_defer;
8058 PL_lex_expect = proto_perl->Ilex_expect;
8059 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8060 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8061 PL_lex_starts = proto_perl->Ilex_starts;
8062 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8063 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8064 PL_lex_op = proto_perl->Ilex_op;
8065 PL_lex_inpat = proto_perl->Ilex_inpat;
8066 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8067 PL_lex_brackets = proto_perl->Ilex_brackets;
8068 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8069 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8070 PL_lex_casemods = proto_perl->Ilex_casemods;
8071 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8072 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8074 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8075 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8076 PL_nexttoke = proto_perl->Inexttoke;
8078 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8079 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8080 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8081 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8082 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8083 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8084 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8085 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8086 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8087 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8088 PL_pending_ident = proto_perl->Ipending_ident;
8089 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8091 PL_expect = proto_perl->Iexpect;
8093 PL_multi_start = proto_perl->Imulti_start;
8094 PL_multi_end = proto_perl->Imulti_end;
8095 PL_multi_open = proto_perl->Imulti_open;
8096 PL_multi_close = proto_perl->Imulti_close;
8098 PL_error_count = proto_perl->Ierror_count;
8099 PL_subline = proto_perl->Isubline;
8100 PL_subname = sv_dup_inc(proto_perl->Isubname);
8102 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8103 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8104 PL_padix = proto_perl->Ipadix;
8105 PL_padix_floor = proto_perl->Ipadix_floor;
8106 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8108 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8109 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8110 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8111 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8112 PL_last_lop_op = proto_perl->Ilast_lop_op;
8113 PL_in_my = proto_perl->Iin_my;
8114 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8116 PL_cryptseen = proto_perl->Icryptseen;
8119 PL_hints = proto_perl->Ihints;
8121 PL_amagic_generation = proto_perl->Iamagic_generation;
8123 #ifdef USE_LOCALE_COLLATE
8124 PL_collation_ix = proto_perl->Icollation_ix;
8125 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8126 PL_collation_standard = proto_perl->Icollation_standard;
8127 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8128 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8129 #endif /* USE_LOCALE_COLLATE */
8131 #ifdef USE_LOCALE_NUMERIC
8132 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8133 PL_numeric_standard = proto_perl->Inumeric_standard;
8134 PL_numeric_local = proto_perl->Inumeric_local;
8135 PL_numeric_radix = proto_perl->Inumeric_radix;
8136 #endif /* !USE_LOCALE_NUMERIC */
8138 /* utf8 character classes */
8139 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8140 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8141 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8142 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8143 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8144 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8145 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8146 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8147 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8148 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8149 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8150 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8151 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8152 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8153 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8154 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8155 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8158 PL_last_swash_hv = Nullhv; /* reinits on demand */
8159 PL_last_swash_klen = 0;
8160 PL_last_swash_key[0]= '\0';
8161 PL_last_swash_tmps = (U8*)NULL;
8162 PL_last_swash_slen = 0;
8164 /* perly.c globals */
8165 PL_yydebug = proto_perl->Iyydebug;
8166 PL_yynerrs = proto_perl->Iyynerrs;
8167 PL_yyerrflag = proto_perl->Iyyerrflag;
8168 PL_yychar = proto_perl->Iyychar;
8169 PL_yyval = proto_perl->Iyyval;
8170 PL_yylval = proto_perl->Iyylval;
8172 PL_glob_index = proto_perl->Iglob_index;
8173 PL_srand_called = proto_perl->Isrand_called;
8174 PL_uudmap['M'] = 0; /* reinits on demand */
8175 PL_bitcount = Nullch; /* reinits on demand */
8177 if (proto_perl->Ipsig_ptr) {
8178 int sig_num[] = { SIG_NUM };
8179 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8180 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8181 for (i = 1; PL_sig_name[i]; i++) {
8182 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8183 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8187 PL_psig_ptr = (SV**)NULL;
8188 PL_psig_name = (SV**)NULL;
8191 /* thrdvar.h stuff */
8194 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8195 PL_tmps_ix = proto_perl->Ttmps_ix;
8196 PL_tmps_max = proto_perl->Ttmps_max;
8197 PL_tmps_floor = proto_perl->Ttmps_floor;
8198 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8200 while (i <= PL_tmps_ix) {
8201 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8205 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8206 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8207 Newz(54, PL_markstack, i, I32);
8208 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8209 - proto_perl->Tmarkstack);
8210 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8211 - proto_perl->Tmarkstack);
8212 Copy(proto_perl->Tmarkstack, PL_markstack,
8213 PL_markstack_ptr - PL_markstack + 1, I32);
8215 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8216 * NOTE: unlike the others! */
8217 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8218 PL_scopestack_max = proto_perl->Tscopestack_max;
8219 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8220 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8222 /* next push_return() sets PL_retstack[PL_retstack_ix]
8223 * NOTE: unlike the others! */
8224 PL_retstack_ix = proto_perl->Tretstack_ix;
8225 PL_retstack_max = proto_perl->Tretstack_max;
8226 Newz(54, PL_retstack, PL_retstack_max, OP*);
8227 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8229 /* NOTE: si_dup() looks at PL_markstack */
8230 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8232 /* PL_curstack = PL_curstackinfo->si_stack; */
8233 PL_curstack = av_dup(proto_perl->Tcurstack);
8234 PL_mainstack = av_dup(proto_perl->Tmainstack);
8236 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8237 PL_stack_base = AvARRAY(PL_curstack);
8238 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8239 - proto_perl->Tstack_base);
8240 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8242 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8243 * NOTE: unlike the others! */
8244 PL_savestack_ix = proto_perl->Tsavestack_ix;
8245 PL_savestack_max = proto_perl->Tsavestack_max;
8246 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8247 PL_savestack = ss_dup(proto_perl);
8251 ENTER; /* perl_destruct() wants to LEAVE; */
8254 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8255 PL_top_env = &PL_start_env;
8257 PL_op = proto_perl->Top;
8260 PL_Xpv = (XPV*)NULL;
8261 PL_na = proto_perl->Tna;
8263 PL_statbuf = proto_perl->Tstatbuf;
8264 PL_statcache = proto_perl->Tstatcache;
8265 PL_statgv = gv_dup(proto_perl->Tstatgv);
8266 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8268 PL_timesbuf = proto_perl->Ttimesbuf;
8271 PL_tainted = proto_perl->Ttainted;
8272 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8273 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8274 PL_rs = sv_dup_inc(proto_perl->Trs);
8275 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8276 PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv);
8277 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8278 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8279 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8280 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8281 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8283 PL_restartop = proto_perl->Trestartop;
8284 PL_in_eval = proto_perl->Tin_eval;
8285 PL_delaymagic = proto_perl->Tdelaymagic;
8286 PL_dirty = proto_perl->Tdirty;
8287 PL_localizing = proto_perl->Tlocalizing;
8289 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8290 PL_protect = proto_perl->Tprotect;
8292 PL_errors = sv_dup_inc(proto_perl->Terrors);
8293 PL_av_fetch_sv = Nullsv;
8294 PL_hv_fetch_sv = Nullsv;
8295 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8296 PL_modcount = proto_perl->Tmodcount;
8297 PL_lastgotoprobe = Nullop;
8298 PL_dumpindent = proto_perl->Tdumpindent;
8300 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8301 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8302 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8303 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8304 PL_sortcxix = proto_perl->Tsortcxix;
8305 PL_efloatbuf = Nullch; /* reinits on demand */
8306 PL_efloatsize = 0; /* reinits on demand */
8310 PL_screamfirst = NULL;
8311 PL_screamnext = NULL;
8312 PL_maxscream = -1; /* reinits on demand */
8313 PL_lastscream = Nullsv;
8315 PL_watchaddr = NULL;
8316 PL_watchok = Nullch;
8318 PL_regdummy = proto_perl->Tregdummy;
8319 PL_regcomp_parse = Nullch;
8320 PL_regxend = Nullch;
8321 PL_regcode = (regnode*)NULL;
8324 PL_regprecomp = Nullch;
8329 PL_seen_zerolen = 0;
8331 PL_regcomp_rx = (regexp*)NULL;
8333 PL_colorset = 0; /* reinits PL_colors[] */
8334 /*PL_colors[6] = {0,0,0,0,0,0};*/
8335 PL_reg_whilem_seen = 0;
8336 PL_reginput = Nullch;
8339 PL_regstartp = (I32*)NULL;
8340 PL_regendp = (I32*)NULL;
8341 PL_reglastparen = (U32*)NULL;
8342 PL_regtill = Nullch;
8344 PL_reg_start_tmp = (char**)NULL;
8345 PL_reg_start_tmpl = 0;
8346 PL_regdata = (struct reg_data*)NULL;
8349 PL_reg_eval_set = 0;
8351 PL_regprogram = (regnode*)NULL;
8353 PL_regcc = (CURCUR*)NULL;
8354 PL_reg_call_cc = (struct re_cc_state*)NULL;
8355 PL_reg_re = (regexp*)NULL;
8356 PL_reg_ganch = Nullch;
8358 PL_reg_magic = (MAGIC*)NULL;
8360 PL_reg_oldcurpm = (PMOP*)NULL;
8361 PL_reg_curpm = (PMOP*)NULL;
8362 PL_reg_oldsaved = Nullch;
8363 PL_reg_oldsavedlen = 0;
8365 PL_reg_leftiter = 0;
8366 PL_reg_poscache = Nullch;
8367 PL_reg_poscache_size= 0;
8369 /* RE engine - function pointers */
8370 PL_regcompp = proto_perl->Tregcompp;
8371 PL_regexecp = proto_perl->Tregexecp;
8372 PL_regint_start = proto_perl->Tregint_start;
8373 PL_regint_string = proto_perl->Tregint_string;
8374 PL_regfree = proto_perl->Tregfree;
8376 PL_reginterp_cnt = 0;
8377 PL_reg_starttry = 0;
8380 return (PerlInterpreter*)pPerl;
8386 #else /* !USE_ITHREADS */
8392 #endif /* USE_ITHREADS */
8395 do_report_used(pTHXo_ SV *sv)
8397 if (SvTYPE(sv) != SVTYPEMASK) {
8398 PerlIO_printf(Perl_debug_log, "****\n");
8404 do_clean_objs(pTHXo_ SV *sv)
8408 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8409 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8410 if (SvWEAKREF(sv)) {
8421 /* XXX Might want to check arrays, etc. */
8424 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8426 do_clean_named_objs(pTHXo_ SV *sv)
8428 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8429 if ( SvOBJECT(GvSV(sv)) ||
8430 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8431 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8432 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8433 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8435 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8443 do_clean_all(pTHXo_ SV *sv)
8445 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8446 SvFLAGS(sv) |= SVf_BREAK;