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), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2401 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2402 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2403 SvCUR(sv) = len - 1;
2404 SvLEN(sv) = len; /* No longer know the real size. */
2406 Safefree(s); /* No longer using what was there before. */
2411 =for apidoc sv_utf8_downgrade
2413 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2414 This may not be possible if the PV contains non-byte encoding characters;
2415 if this is the case, either returns false or, if C<fail_ok> is not
2422 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2424 if (SvPOK(sv) && SvUTF8(sv)) {
2426 char *c = SvPVX(sv);
2427 STRLEN len = SvCUR(sv);
2429 if (!utf8_to_bytes((U8*)c, &len)) {
2434 Perl_croak(aTHX_ "Wide character in %s",
2435 PL_op_desc[PL_op->op_type]);
2437 Perl_croak(aTHX_ "Wide character");
2449 =for apidoc sv_utf8_encode
2451 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2452 flag so that it looks like bytes again. Nothing calls this.
2458 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2460 sv_utf8_upgrade(sv);
2465 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2469 bool has_utf = FALSE;
2470 if (!sv_utf8_downgrade(sv, TRUE))
2473 /* it is actually just a matter of turning the utf8 flag on, but
2474 * we want to make sure everything inside is valid utf8 first.
2477 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2480 while (c < SvEND(sv)) {
2491 /* Note: sv_setsv() should not be called with a source string that needs
2492 * to be reused, since it may destroy the source string if it is marked
2497 =for apidoc sv_setsv
2499 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2500 The source SV may be destroyed if it is mortal. Does not handle 'set'
2501 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2508 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2510 register U32 sflags;
2516 SV_CHECK_THINKFIRST(dstr);
2518 sstr = &PL_sv_undef;
2519 stype = SvTYPE(sstr);
2520 dtype = SvTYPE(dstr);
2524 /* There's a lot of redundancy below but we're going for speed here */
2529 if (dtype != SVt_PVGV) {
2530 (void)SvOK_off(dstr);
2538 sv_upgrade(dstr, SVt_IV);
2541 sv_upgrade(dstr, SVt_PVNV);
2545 sv_upgrade(dstr, SVt_PVIV);
2548 (void)SvIOK_only(dstr);
2549 SvIVX(dstr) = SvIVX(sstr);
2552 if (SvTAINTED(sstr))
2563 sv_upgrade(dstr, SVt_NV);
2568 sv_upgrade(dstr, SVt_PVNV);
2571 SvNVX(dstr) = SvNVX(sstr);
2572 (void)SvNOK_only(dstr);
2573 if (SvTAINTED(sstr))
2581 sv_upgrade(dstr, SVt_RV);
2582 else if (dtype == SVt_PVGV &&
2583 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2586 if (GvIMPORTED(dstr) != GVf_IMPORTED
2587 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2589 GvIMPORTED_on(dstr);
2600 sv_upgrade(dstr, SVt_PV);
2603 if (dtype < SVt_PVIV)
2604 sv_upgrade(dstr, SVt_PVIV);
2607 if (dtype < SVt_PVNV)
2608 sv_upgrade(dstr, SVt_PVNV);
2615 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2616 PL_op_name[PL_op->op_type]);
2618 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2622 if (dtype <= SVt_PVGV) {
2624 if (dtype != SVt_PVGV) {
2625 char *name = GvNAME(sstr);
2626 STRLEN len = GvNAMELEN(sstr);
2627 sv_upgrade(dstr, SVt_PVGV);
2628 sv_magic(dstr, dstr, '*', Nullch, 0);
2629 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2630 GvNAME(dstr) = savepvn(name, len);
2631 GvNAMELEN(dstr) = len;
2632 SvFAKE_on(dstr); /* can coerce to non-glob */
2634 /* ahem, death to those who redefine active sort subs */
2635 else if (PL_curstackinfo->si_type == PERLSI_SORT
2636 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2637 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2639 (void)SvOK_off(dstr);
2640 GvINTRO_off(dstr); /* one-shot flag */
2642 GvGP(dstr) = gp_ref(GvGP(sstr));
2643 if (SvTAINTED(sstr))
2645 if (GvIMPORTED(dstr) != GVf_IMPORTED
2646 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2648 GvIMPORTED_on(dstr);
2656 if (SvGMAGICAL(sstr)) {
2658 if (SvTYPE(sstr) != stype) {
2659 stype = SvTYPE(sstr);
2660 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2664 if (stype == SVt_PVLV)
2665 (void)SvUPGRADE(dstr, SVt_PVNV);
2667 (void)SvUPGRADE(dstr, stype);
2670 sflags = SvFLAGS(sstr);
2672 if (sflags & SVf_ROK) {
2673 if (dtype >= SVt_PV) {
2674 if (dtype == SVt_PVGV) {
2675 SV *sref = SvREFCNT_inc(SvRV(sstr));
2677 int intro = GvINTRO(dstr);
2682 GvINTRO_off(dstr); /* one-shot flag */
2683 Newz(602,gp, 1, GP);
2684 GvGP(dstr) = gp_ref(gp);
2685 GvSV(dstr) = NEWSV(72,0);
2686 GvLINE(dstr) = CopLINE(PL_curcop);
2687 GvEGV(dstr) = (GV*)dstr;
2690 switch (SvTYPE(sref)) {
2693 SAVESPTR(GvAV(dstr));
2695 dref = (SV*)GvAV(dstr);
2696 GvAV(dstr) = (AV*)sref;
2697 if (!GvIMPORTED_AV(dstr)
2698 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2700 GvIMPORTED_AV_on(dstr);
2705 SAVESPTR(GvHV(dstr));
2707 dref = (SV*)GvHV(dstr);
2708 GvHV(dstr) = (HV*)sref;
2709 if (!GvIMPORTED_HV(dstr)
2710 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2712 GvIMPORTED_HV_on(dstr);
2717 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2718 SvREFCNT_dec(GvCV(dstr));
2719 GvCV(dstr) = Nullcv;
2720 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2721 PL_sub_generation++;
2723 SAVESPTR(GvCV(dstr));
2726 dref = (SV*)GvCV(dstr);
2727 if (GvCV(dstr) != (CV*)sref) {
2728 CV* cv = GvCV(dstr);
2730 if (!GvCVGEN((GV*)dstr) &&
2731 (CvROOT(cv) || CvXSUB(cv)))
2734 /* ahem, death to those who redefine
2735 * active sort subs */
2736 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2737 PL_sortcop == CvSTART(cv))
2739 "Can't redefine active sort subroutine %s",
2740 GvENAME((GV*)dstr));
2741 /* Redefining a sub - warning is mandatory if
2742 it was a const and its value changed. */
2743 if (ckWARN(WARN_REDEFINE)
2745 && (!CvCONST((CV*)sref)
2746 || sv_cmp(cv_const_sv(cv),
2747 cv_const_sv((CV*)sref)))))
2749 Perl_warner(aTHX_ WARN_REDEFINE,
2751 ? "Constant subroutine %s redefined"
2752 : "Subroutine %s redefined",
2753 GvENAME((GV*)dstr));
2756 cv_ckproto(cv, (GV*)dstr,
2757 SvPOK(sref) ? SvPVX(sref) : Nullch);
2759 GvCV(dstr) = (CV*)sref;
2760 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2761 GvASSUMECV_on(dstr);
2762 PL_sub_generation++;
2764 if (!GvIMPORTED_CV(dstr)
2765 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2767 GvIMPORTED_CV_on(dstr);
2772 SAVESPTR(GvIOp(dstr));
2774 dref = (SV*)GvIOp(dstr);
2775 GvIOp(dstr) = (IO*)sref;
2779 SAVESPTR(GvFORM(dstr));
2781 dref = (SV*)GvFORM(dstr);
2782 GvFORM(dstr) = (CV*)sref;
2786 SAVESPTR(GvSV(dstr));
2788 dref = (SV*)GvSV(dstr);
2790 if (!GvIMPORTED_SV(dstr)
2791 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2793 GvIMPORTED_SV_on(dstr);
2801 if (SvTAINTED(sstr))
2806 (void)SvOOK_off(dstr); /* backoff */
2808 Safefree(SvPVX(dstr));
2809 SvLEN(dstr)=SvCUR(dstr)=0;
2812 (void)SvOK_off(dstr);
2813 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2815 if (sflags & SVp_NOK) {
2817 SvNVX(dstr) = SvNVX(sstr);
2819 if (sflags & SVp_IOK) {
2820 (void)SvIOK_on(dstr);
2821 SvIVX(dstr) = SvIVX(sstr);
2822 if (sflags & SVf_IVisUV)
2825 if (SvAMAGIC(sstr)) {
2829 else if (sflags & SVp_POK) {
2832 * Check to see if we can just swipe the string. If so, it's a
2833 * possible small lose on short strings, but a big win on long ones.
2834 * It might even be a win on short strings if SvPVX(dstr)
2835 * has to be allocated and SvPVX(sstr) has to be freed.
2838 if (SvTEMP(sstr) && /* slated for free anyway? */
2839 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2840 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2841 SvLEN(sstr) && /* and really is a string */
2842 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
2844 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2846 SvFLAGS(dstr) &= ~SVf_OOK;
2847 Safefree(SvPVX(dstr) - SvIVX(dstr));
2849 else if (SvLEN(dstr))
2850 Safefree(SvPVX(dstr));
2852 (void)SvPOK_only(dstr);
2853 SvPV_set(dstr, SvPVX(sstr));
2854 SvLEN_set(dstr, SvLEN(sstr));
2855 SvCUR_set(dstr, SvCUR(sstr));
2858 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2859 SvPV_set(sstr, Nullch);
2864 else { /* have to copy actual string */
2865 STRLEN len = SvCUR(sstr);
2867 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2868 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2869 SvCUR_set(dstr, len);
2870 *SvEND(dstr) = '\0';
2871 (void)SvPOK_only(dstr);
2873 if ((sflags & SVf_UTF8) && !IN_BYTE)
2876 if (sflags & SVp_NOK) {
2878 SvNVX(dstr) = SvNVX(sstr);
2880 if (sflags & SVp_IOK) {
2881 (void)SvIOK_on(dstr);
2882 SvIVX(dstr) = SvIVX(sstr);
2883 if (sflags & SVf_IVisUV)
2887 else if (sflags & SVp_NOK) {
2888 SvNVX(dstr) = SvNVX(sstr);
2889 (void)SvNOK_only(dstr);
2890 if (sflags & SVf_IOK) {
2891 (void)SvIOK_on(dstr);
2892 SvIVX(dstr) = SvIVX(sstr);
2893 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2894 if (sflags & SVf_IVisUV)
2898 else if (sflags & SVp_IOK) {
2899 (void)SvIOK_only(dstr);
2900 SvIVX(dstr) = SvIVX(sstr);
2901 if (sflags & SVf_IVisUV)
2905 if (dtype == SVt_PVGV) {
2906 if (ckWARN(WARN_MISC))
2907 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2910 (void)SvOK_off(dstr);
2912 if (SvTAINTED(sstr))
2917 =for apidoc sv_setsv_mg
2919 Like C<sv_setsv>, but also handles 'set' magic.
2925 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2927 sv_setsv(dstr,sstr);
2932 =for apidoc sv_setpvn
2934 Copies a string into an SV. The C<len> parameter indicates the number of
2935 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2941 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2943 register char *dptr;
2945 /* len is STRLEN which is unsigned, need to copy to signed */
2949 SV_CHECK_THINKFIRST(sv);
2954 (void)SvUPGRADE(sv, SVt_PV);
2956 SvGROW(sv, len + 1);
2958 Move(ptr,dptr,len,char);
2961 (void)SvPOK_only(sv); /* validate pointer */
2966 =for apidoc sv_setpvn_mg
2968 Like C<sv_setpvn>, but also handles 'set' magic.
2974 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2976 sv_setpvn(sv,ptr,len);
2981 =for apidoc sv_setpv
2983 Copies a string into an SV. The string must be null-terminated. Does not
2984 handle 'set' magic. See C<sv_setpv_mg>.
2990 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
2992 register STRLEN len;
2994 SV_CHECK_THINKFIRST(sv);
3000 (void)SvUPGRADE(sv, SVt_PV);
3002 SvGROW(sv, len + 1);
3003 Move(ptr,SvPVX(sv),len+1,char);
3005 (void)SvPOK_only(sv); /* validate pointer */
3010 =for apidoc sv_setpv_mg
3012 Like C<sv_setpv>, but also handles 'set' magic.
3018 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3025 =for apidoc sv_usepvn
3027 Tells an SV to use C<ptr> to find its string value. Normally the string is
3028 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3029 The C<ptr> should point to memory that was allocated by C<malloc>. The
3030 string length, C<len>, must be supplied. This function will realloc the
3031 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3032 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3033 See C<sv_usepvn_mg>.
3039 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3041 SV_CHECK_THINKFIRST(sv);
3042 (void)SvUPGRADE(sv, SVt_PV);
3047 (void)SvOOK_off(sv);
3048 if (SvPVX(sv) && SvLEN(sv))
3049 Safefree(SvPVX(sv));
3050 Renew(ptr, len+1, char);
3053 SvLEN_set(sv, len+1);
3055 (void)SvPOK_only(sv); /* validate pointer */
3060 =for apidoc sv_usepvn_mg
3062 Like C<sv_usepvn>, but also handles 'set' magic.
3068 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3070 sv_usepvn(sv,ptr,len);
3075 Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags)
3077 if (SvREADONLY(sv)) {
3079 char *pvx = SvPVX(sv);
3080 STRLEN len = SvCUR(sv);
3081 U32 hash = SvUVX(sv);
3082 SvGROW(sv, len + 1);
3083 Move(pvx,SvPVX(sv),len,char);
3087 unsharepvn(pvx,len,hash);
3089 else if (PL_curcop != &PL_compiling)
3090 Perl_croak(aTHX_ PL_no_modify);
3093 sv_unref_flags(sv, flags);
3094 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3099 Perl_sv_force_normal(pTHX_ register SV *sv)
3101 sv_force_normal_flags(sv, 0);
3107 Efficient removal of characters from the beginning of the string buffer.
3108 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3109 the string buffer. The C<ptr> becomes the first character of the adjusted
3116 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3120 register STRLEN delta;
3122 if (!ptr || !SvPOKp(sv))
3124 SV_CHECK_THINKFIRST(sv);
3125 if (SvTYPE(sv) < SVt_PVIV)
3126 sv_upgrade(sv,SVt_PVIV);
3129 if (!SvLEN(sv)) { /* make copy of shared string */
3130 char *pvx = SvPVX(sv);
3131 STRLEN len = SvCUR(sv);
3132 SvGROW(sv, len + 1);
3133 Move(pvx,SvPVX(sv),len,char);
3137 SvFLAGS(sv) |= SVf_OOK;
3139 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3140 delta = ptr - SvPVX(sv);
3148 =for apidoc sv_catpvn
3150 Concatenates the string onto the end of the string which is in the SV. The
3151 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3152 'set' magic. See C<sv_catpvn_mg>.
3158 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3163 junk = SvPV_force(sv, tlen);
3164 SvGROW(sv, tlen + len + 1);
3167 Move(ptr,SvPVX(sv)+tlen,len,char);
3170 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3175 =for apidoc sv_catpvn_mg
3177 Like C<sv_catpvn>, but also handles 'set' magic.
3183 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3185 sv_catpvn(sv,ptr,len);
3190 =for apidoc sv_catsv
3192 Concatenates the string from SV C<ssv> onto the end of the string in SV
3193 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3199 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3205 if ((s = SvPV(sstr, len))) {
3206 if (DO_UTF8(sstr)) {
3207 sv_utf8_upgrade(dstr);
3208 sv_catpvn(dstr,s,len);
3212 sv_catpvn(dstr,s,len);
3217 =for apidoc sv_catsv_mg
3219 Like C<sv_catsv>, but also handles 'set' magic.
3225 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3227 sv_catsv(dstr,sstr);
3232 =for apidoc sv_catpv
3234 Concatenates the string onto the end of the string which is in the SV.
3235 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3241 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3243 register STRLEN len;
3249 junk = SvPV_force(sv, tlen);
3251 SvGROW(sv, tlen + len + 1);
3254 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3256 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3261 =for apidoc sv_catpv_mg
3263 Like C<sv_catpv>, but also handles 'set' magic.
3269 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3276 Perl_newSV(pTHX_ STRLEN len)
3282 sv_upgrade(sv, SVt_PV);
3283 SvGROW(sv, len + 1);
3288 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3291 =for apidoc sv_magic
3293 Adds magic to an SV.
3299 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3303 if (SvREADONLY(sv)) {
3304 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3305 Perl_croak(aTHX_ PL_no_modify);
3307 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3308 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3315 (void)SvUPGRADE(sv, SVt_PVMG);
3317 Newz(702,mg, 1, MAGIC);
3318 mg->mg_moremagic = SvMAGIC(sv);
3321 if (!obj || obj == sv || how == '#' || how == 'r')
3324 mg->mg_obj = SvREFCNT_inc(obj);
3325 mg->mg_flags |= MGf_REFCOUNTED;
3328 mg->mg_len = namlen;
3331 mg->mg_ptr = savepvn(name, namlen);
3332 else if (namlen == HEf_SVKEY)
3333 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3337 mg->mg_virtual = &PL_vtbl_sv;
3340 mg->mg_virtual = &PL_vtbl_amagic;
3343 mg->mg_virtual = &PL_vtbl_amagicelem;
3349 mg->mg_virtual = &PL_vtbl_bm;
3352 mg->mg_virtual = &PL_vtbl_regdata;
3355 mg->mg_virtual = &PL_vtbl_regdatum;
3358 mg->mg_virtual = &PL_vtbl_env;
3361 mg->mg_virtual = &PL_vtbl_fm;
3364 mg->mg_virtual = &PL_vtbl_envelem;
3367 mg->mg_virtual = &PL_vtbl_mglob;
3370 mg->mg_virtual = &PL_vtbl_isa;
3373 mg->mg_virtual = &PL_vtbl_isaelem;
3376 mg->mg_virtual = &PL_vtbl_nkeys;
3383 mg->mg_virtual = &PL_vtbl_dbline;
3387 mg->mg_virtual = &PL_vtbl_mutex;
3389 #endif /* USE_THREADS */
3390 #ifdef USE_LOCALE_COLLATE
3392 mg->mg_virtual = &PL_vtbl_collxfrm;
3394 #endif /* USE_LOCALE_COLLATE */
3396 mg->mg_virtual = &PL_vtbl_pack;
3400 mg->mg_virtual = &PL_vtbl_packelem;
3403 mg->mg_virtual = &PL_vtbl_regexp;
3406 mg->mg_virtual = &PL_vtbl_sig;
3409 mg->mg_virtual = &PL_vtbl_sigelem;
3412 mg->mg_virtual = &PL_vtbl_taint;
3416 mg->mg_virtual = &PL_vtbl_uvar;
3419 mg->mg_virtual = &PL_vtbl_vec;
3422 mg->mg_virtual = &PL_vtbl_substr;
3425 mg->mg_virtual = &PL_vtbl_defelem;
3428 mg->mg_virtual = &PL_vtbl_glob;
3431 mg->mg_virtual = &PL_vtbl_arylen;
3434 mg->mg_virtual = &PL_vtbl_pos;
3437 mg->mg_virtual = &PL_vtbl_backref;
3439 case '~': /* Reserved for use by extensions not perl internals. */
3440 /* Useful for attaching extension internal data to perl vars. */
3441 /* Note that multiple extensions may clash if magical scalars */
3442 /* etc holding private data from one are passed to another. */
3446 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3450 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3454 =for apidoc sv_unmagic
3456 Removes magic from an SV.
3462 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3466 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3469 for (mg = *mgp; mg; mg = *mgp) {
3470 if (mg->mg_type == type) {
3471 MGVTBL* vtbl = mg->mg_virtual;
3472 *mgp = mg->mg_moremagic;
3473 if (vtbl && vtbl->svt_free)
3474 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3475 if (mg->mg_ptr && mg->mg_type != 'g')
3476 if (mg->mg_len >= 0)
3477 Safefree(mg->mg_ptr);
3478 else if (mg->mg_len == HEf_SVKEY)
3479 SvREFCNT_dec((SV*)mg->mg_ptr);
3480 if (mg->mg_flags & MGf_REFCOUNTED)
3481 SvREFCNT_dec(mg->mg_obj);
3485 mgp = &mg->mg_moremagic;
3489 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3496 =for apidoc sv_rvweaken
3504 Perl_sv_rvweaken(pTHX_ SV *sv)
3507 if (!SvOK(sv)) /* let undefs pass */
3510 Perl_croak(aTHX_ "Can't weaken a nonreference");
3511 else if (SvWEAKREF(sv)) {
3512 if (ckWARN(WARN_MISC))
3513 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3517 sv_add_backref(tsv, sv);
3524 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3528 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3529 av = (AV*)mg->mg_obj;
3532 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3533 SvREFCNT_dec(av); /* for sv_magic */
3539 S_sv_del_backref(pTHX_ SV *sv)
3546 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3547 Perl_croak(aTHX_ "panic: del_backref");
3548 av = (AV *)mg->mg_obj;
3553 svp[i] = &PL_sv_undef; /* XXX */
3560 =for apidoc sv_insert
3562 Inserts a string at the specified offset/length within the SV. Similar to
3563 the Perl substr() function.
3569 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3573 register char *midend;
3574 register char *bigend;
3580 Perl_croak(aTHX_ "Can't modify non-existent substring");
3581 SvPV_force(bigstr, curlen);
3582 (void)SvPOK_only_UTF8(bigstr);
3583 if (offset + len > curlen) {
3584 SvGROW(bigstr, offset+len+1);
3585 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3586 SvCUR_set(bigstr, offset+len);
3590 i = littlelen - len;
3591 if (i > 0) { /* string might grow */
3592 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3593 mid = big + offset + len;
3594 midend = bigend = big + SvCUR(bigstr);
3597 while (midend > mid) /* shove everything down */
3598 *--bigend = *--midend;
3599 Move(little,big+offset,littlelen,char);
3605 Move(little,SvPVX(bigstr)+offset,len,char);
3610 big = SvPVX(bigstr);
3613 bigend = big + SvCUR(bigstr);
3615 if (midend > bigend)
3616 Perl_croak(aTHX_ "panic: sv_insert");
3618 if (mid - big > bigend - midend) { /* faster to shorten from end */
3620 Move(little, mid, littlelen,char);
3623 i = bigend - midend;
3625 Move(midend, mid, i,char);
3629 SvCUR_set(bigstr, mid - big);
3632 else if ((i = mid - big)) { /* faster from front */
3633 midend -= littlelen;
3635 sv_chop(bigstr,midend-i);
3640 Move(little, mid, littlelen,char);
3642 else if (littlelen) {
3643 midend -= littlelen;
3644 sv_chop(bigstr,midend);
3645 Move(little,midend,littlelen,char);
3648 sv_chop(bigstr,midend);
3654 =for apidoc sv_replace
3656 Make the first argument a copy of the second, then delete the original.
3662 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3664 U32 refcnt = SvREFCNT(sv);
3665 SV_CHECK_THINKFIRST(sv);
3666 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3667 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3668 if (SvMAGICAL(sv)) {
3672 sv_upgrade(nsv, SVt_PVMG);
3673 SvMAGIC(nsv) = SvMAGIC(sv);
3674 SvFLAGS(nsv) |= SvMAGICAL(sv);
3680 assert(!SvREFCNT(sv));
3681 StructCopy(nsv,sv,SV);
3682 SvREFCNT(sv) = refcnt;
3683 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3688 =for apidoc sv_clear
3690 Clear an SV, making it empty. Does not free the memory used by the SV
3697 Perl_sv_clear(pTHX_ register SV *sv)
3701 assert(SvREFCNT(sv) == 0);
3704 if (PL_defstash) { /* Still have a symbol table? */
3709 Zero(&tmpref, 1, SV);
3710 sv_upgrade(&tmpref, SVt_RV);
3712 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3713 SvREFCNT(&tmpref) = 1;
3716 stash = SvSTASH(sv);
3717 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3720 PUSHSTACKi(PERLSI_DESTROY);
3721 SvRV(&tmpref) = SvREFCNT_inc(sv);
3726 call_sv((SV*)GvCV(destructor),
3727 G_DISCARD|G_EVAL|G_KEEPERR);
3733 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3735 del_XRV(SvANY(&tmpref));
3738 if (PL_in_clean_objs)
3739 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3741 /* DESTROY gave object new lease on life */
3747 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3748 SvOBJECT_off(sv); /* Curse the object. */
3749 if (SvTYPE(sv) != SVt_PVIO)
3750 --PL_sv_objcount; /* XXX Might want something more general */
3753 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3756 switch (SvTYPE(sv)) {
3759 IoIFP(sv) != PerlIO_stdin() &&
3760 IoIFP(sv) != PerlIO_stdout() &&
3761 IoIFP(sv) != PerlIO_stderr())
3763 io_close((IO*)sv, FALSE);
3765 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3766 PerlDir_close(IoDIRP(sv));
3767 IoDIRP(sv) = (DIR*)NULL;
3768 Safefree(IoTOP_NAME(sv));
3769 Safefree(IoFMT_NAME(sv));
3770 Safefree(IoBOTTOM_NAME(sv));
3785 SvREFCNT_dec(LvTARG(sv));
3789 Safefree(GvNAME(sv));
3790 /* cannot decrease stash refcount yet, as we might recursively delete
3791 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3792 of stash until current sv is completely gone.
3793 -- JohnPC, 27 Mar 1998 */
3794 stash = GvSTASH(sv);
3800 (void)SvOOK_off(sv);
3808 SvREFCNT_dec(SvRV(sv));
3810 else if (SvPVX(sv) && SvLEN(sv))
3811 Safefree(SvPVX(sv));
3812 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3813 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3825 switch (SvTYPE(sv)) {
3841 del_XPVIV(SvANY(sv));
3844 del_XPVNV(SvANY(sv));
3847 del_XPVMG(SvANY(sv));
3850 del_XPVLV(SvANY(sv));
3853 del_XPVAV(SvANY(sv));
3856 del_XPVHV(SvANY(sv));
3859 del_XPVCV(SvANY(sv));
3862 del_XPVGV(SvANY(sv));
3863 /* code duplication for increased performance. */
3864 SvFLAGS(sv) &= SVf_BREAK;
3865 SvFLAGS(sv) |= SVTYPEMASK;
3866 /* decrease refcount of the stash that owns this GV, if any */
3868 SvREFCNT_dec(stash);
3869 return; /* not break, SvFLAGS reset already happened */
3871 del_XPVBM(SvANY(sv));
3874 del_XPVFM(SvANY(sv));
3877 del_XPVIO(SvANY(sv));
3880 SvFLAGS(sv) &= SVf_BREAK;
3881 SvFLAGS(sv) |= SVTYPEMASK;
3885 Perl_sv_newref(pTHX_ SV *sv)
3888 ATOMIC_INC(SvREFCNT(sv));
3895 Free the memory used by an SV.
3901 Perl_sv_free(pTHX_ SV *sv)
3903 int refcount_is_zero;
3907 if (SvREFCNT(sv) == 0) {
3908 if (SvFLAGS(sv) & SVf_BREAK)
3910 if (PL_in_clean_all) /* All is fair */
3912 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3913 /* make sure SvREFCNT(sv)==0 happens very seldom */
3914 SvREFCNT(sv) = (~(U32)0)/2;
3917 if (ckWARN_d(WARN_INTERNAL))
3918 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3921 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3922 if (!refcount_is_zero)
3926 if (ckWARN_d(WARN_DEBUGGING))
3927 Perl_warner(aTHX_ WARN_DEBUGGING,
3928 "Attempt to free temp prematurely: SV 0x%"UVxf,
3933 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3934 /* make sure SvREFCNT(sv)==0 happens very seldom */
3935 SvREFCNT(sv) = (~(U32)0)/2;
3946 Returns the length of the string in the SV. See also C<SvCUR>.
3952 Perl_sv_len(pTHX_ register SV *sv)
3961 len = mg_length(sv);
3963 junk = SvPV(sv, len);
3968 =for apidoc sv_len_utf8
3970 Returns the number of characters in the string in an SV, counting wide
3971 UTF8 bytes as a single character.
3977 Perl_sv_len_utf8(pTHX_ register SV *sv)
3984 return mg_length(sv);
3989 U8 *s = (U8*)SvPV(sv, len);
3991 return Perl_utf8_length(aTHX_ s, s + len);
3996 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4001 I32 uoffset = *offsetp;
4007 start = s = (U8*)SvPV(sv, len);
4009 while (s < send && uoffset--)
4013 *offsetp = s - start;
4017 while (s < send && ulen--)
4027 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4036 s = (U8*)SvPV(sv, len);
4038 Perl_croak(aTHX_ "panic: bad byte offset");
4039 send = s + *offsetp;
4046 if (ckWARN_d(WARN_UTF8))
4047 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4057 Returns a boolean indicating whether the strings in the two SVs are
4064 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4071 bool pv1tmp = FALSE;
4072 bool pv2tmp = FALSE;
4079 pv1 = SvPV(sv1, cur1);
4086 pv2 = SvPV(sv2, cur2);
4088 /* do not utf8ize the comparands as a side-effect */
4089 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4091 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4095 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4101 eq = memEQ(pv1, pv2, cur1);
4114 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4115 string in C<sv1> is less than, equal to, or greater than the string in
4122 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4127 bool pv1tmp = FALSE;
4128 bool pv2tmp = FALSE;
4135 pv1 = SvPV(sv1, cur1);
4142 pv2 = SvPV(sv2, cur2);
4144 /* do not utf8ize the comparands as a side-effect */
4145 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4147 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4151 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4157 cmp = cur2 ? -1 : 0;
4161 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4164 cmp = retval < 0 ? -1 : 1;
4165 } else if (cur1 == cur2) {
4168 cmp = cur1 < cur2 ? -1 : 1;
4181 =for apidoc sv_cmp_locale
4183 Compares the strings in two SVs in a locale-aware manner. See
4190 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4192 #ifdef USE_LOCALE_COLLATE
4198 if (PL_collation_standard)
4202 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4204 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4206 if (!pv1 || !len1) {
4217 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4220 return retval < 0 ? -1 : 1;
4223 * When the result of collation is equality, that doesn't mean
4224 * that there are no differences -- some locales exclude some
4225 * characters from consideration. So to avoid false equalities,
4226 * we use the raw string as a tiebreaker.
4232 #endif /* USE_LOCALE_COLLATE */
4234 return sv_cmp(sv1, sv2);
4237 #ifdef USE_LOCALE_COLLATE
4239 * Any scalar variable may carry an 'o' magic that contains the
4240 * scalar data of the variable transformed to such a format that
4241 * a normal memory comparison can be used to compare the data
4242 * according to the locale settings.
4245 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4249 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4250 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4255 Safefree(mg->mg_ptr);
4257 if ((xf = mem_collxfrm(s, len, &xlen))) {
4258 if (SvREADONLY(sv)) {
4261 return xf + sizeof(PL_collation_ix);
4264 sv_magic(sv, 0, 'o', 0, 0);
4265 mg = mg_find(sv, 'o');
4278 if (mg && mg->mg_ptr) {
4280 return mg->mg_ptr + sizeof(PL_collation_ix);
4288 #endif /* USE_LOCALE_COLLATE */
4293 Get a line from the filehandle and store it into the SV, optionally
4294 appending to the currently-stored string.
4300 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4304 register STDCHAR rslast;
4305 register STDCHAR *bp;
4309 SV_CHECK_THINKFIRST(sv);
4310 (void)SvUPGRADE(sv, SVt_PV);
4314 if (RsSNARF(PL_rs)) {
4318 else if (RsRECORD(PL_rs)) {
4319 I32 recsize, bytesread;
4322 /* Grab the size of the record we're getting */
4323 recsize = SvIV(SvRV(PL_rs));
4324 (void)SvPOK_only(sv); /* Validate pointer */
4325 buffer = SvGROW(sv, recsize + 1);
4328 /* VMS wants read instead of fread, because fread doesn't respect */
4329 /* RMS record boundaries. This is not necessarily a good thing to be */
4330 /* doing, but we've got no other real choice */
4331 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4333 bytesread = PerlIO_read(fp, buffer, recsize);
4335 SvCUR_set(sv, bytesread);
4336 buffer[bytesread] = '\0';
4337 if (PerlIO_isutf8(fp))
4341 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4343 else if (RsPARA(PL_rs)) {
4348 /* Get $/ i.e. PL_rs into same encoding as stream wants */
4349 if (PerlIO_isutf8(fp)) {
4350 rsptr = SvPVutf8(PL_rs, rslen);
4353 if (SvUTF8(PL_rs)) {
4354 if (!sv_utf8_downgrade(PL_rs, TRUE)) {
4355 Perl_croak(aTHX_ "Wide character in $/");
4358 rsptr = SvPV(PL_rs, rslen);
4362 rslast = rslen ? rsptr[rslen - 1] : '\0';
4364 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4365 do { /* to make sure file boundaries work right */
4368 i = PerlIO_getc(fp);
4372 PerlIO_ungetc(fp,i);
4378 /* See if we know enough about I/O mechanism to cheat it ! */
4380 /* This used to be #ifdef test - it is made run-time test for ease
4381 of abstracting out stdio interface. One call should be cheap
4382 enough here - and may even be a macro allowing compile
4386 if (PerlIO_fast_gets(fp)) {
4389 * We're going to steal some values from the stdio struct
4390 * and put EVERYTHING in the innermost loop into registers.
4392 register STDCHAR *ptr;
4396 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4397 /* An ungetc()d char is handled separately from the regular
4398 * buffer, so we getc() it back out and stuff it in the buffer.
4400 i = PerlIO_getc(fp);
4401 if (i == EOF) return 0;
4402 *(--((*fp)->_ptr)) = (unsigned char) i;
4406 /* Here is some breathtakingly efficient cheating */
4408 cnt = PerlIO_get_cnt(fp); /* get count into register */
4409 (void)SvPOK_only(sv); /* validate pointer */
4410 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4411 if (cnt > 80 && SvLEN(sv) > append) {
4412 shortbuffered = cnt - SvLEN(sv) + append + 1;
4413 cnt -= shortbuffered;
4417 /* remember that cnt can be negative */
4418 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4423 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4424 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4425 DEBUG_P(PerlIO_printf(Perl_debug_log,
4426 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4427 DEBUG_P(PerlIO_printf(Perl_debug_log,
4428 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4429 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4430 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4435 while (cnt > 0) { /* this | eat */
4437 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4438 goto thats_all_folks; /* screams | sed :-) */
4442 Copy(ptr, bp, cnt, char); /* this | eat */
4443 bp += cnt; /* screams | dust */
4444 ptr += cnt; /* louder | sed :-) */
4449 if (shortbuffered) { /* oh well, must extend */
4450 cnt = shortbuffered;
4452 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4454 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4455 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4459 DEBUG_P(PerlIO_printf(Perl_debug_log,
4460 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4461 PTR2UV(ptr),(long)cnt));
4462 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4463 DEBUG_P(PerlIO_printf(Perl_debug_log,
4464 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4465 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4466 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4467 /* This used to call 'filbuf' in stdio form, but as that behaves like
4468 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4469 another abstraction. */
4470 i = PerlIO_getc(fp); /* get more characters */
4471 DEBUG_P(PerlIO_printf(Perl_debug_log,
4472 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4473 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4474 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4475 cnt = PerlIO_get_cnt(fp);
4476 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4477 DEBUG_P(PerlIO_printf(Perl_debug_log,
4478 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4480 if (i == EOF) /* all done for ever? */
4481 goto thats_really_all_folks;
4483 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4485 SvGROW(sv, bpx + cnt + 2);
4486 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4488 *bp++ = i; /* store character from PerlIO_getc */
4490 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4491 goto thats_all_folks;
4495 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4496 memNE((char*)bp - rslen, rsptr, rslen))
4497 goto screamer; /* go back to the fray */
4498 thats_really_all_folks:
4500 cnt += shortbuffered;
4501 DEBUG_P(PerlIO_printf(Perl_debug_log,
4502 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4503 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4504 DEBUG_P(PerlIO_printf(Perl_debug_log,
4505 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4506 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4507 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4509 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4510 DEBUG_P(PerlIO_printf(Perl_debug_log,
4511 "Screamer: done, len=%ld, string=|%.*s|\n",
4512 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4517 /*The big, slow, and stupid way */
4520 /* Need to work around EPOC SDK features */
4521 /* On WINS: MS VC5 generates calls to _chkstk, */
4522 /* if a `large' stack frame is allocated */
4523 /* gcc on MARM does not generate calls like these */
4529 register STDCHAR *bpe = buf + sizeof(buf);
4531 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4532 ; /* keep reading */
4536 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4537 /* Accomodate broken VAXC compiler, which applies U8 cast to
4538 * both args of ?: operator, causing EOF to change into 255
4540 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4544 sv_catpvn(sv, (char *) buf, cnt);
4546 sv_setpvn(sv, (char *) buf, cnt);
4548 if (i != EOF && /* joy */
4550 SvCUR(sv) < rslen ||
4551 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4555 * If we're reading from a TTY and we get a short read,
4556 * indicating that the user hit his EOF character, we need
4557 * to notice it now, because if we try to read from the TTY
4558 * again, the EOF condition will disappear.
4560 * The comparison of cnt to sizeof(buf) is an optimization
4561 * that prevents unnecessary calls to feof().
4565 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4570 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4571 while (i != EOF) { /* to make sure file boundaries work right */
4572 i = PerlIO_getc(fp);
4574 PerlIO_ungetc(fp,i);
4580 if (PerlIO_isutf8(fp))
4585 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4592 Auto-increment of the value in the SV.
4598 Perl_sv_inc(pTHX_ register SV *sv)
4607 if (SvTHINKFIRST(sv)) {
4608 if (SvREADONLY(sv)) {
4609 if (PL_curcop != &PL_compiling)
4610 Perl_croak(aTHX_ PL_no_modify);
4614 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4616 i = PTR2IV(SvRV(sv));
4621 flags = SvFLAGS(sv);
4622 if (flags & SVp_NOK) {
4623 (void)SvNOK_only(sv);
4627 if (flags & SVp_IOK) {
4629 if (SvUVX(sv) == UV_MAX)
4630 sv_setnv(sv, (NV)UV_MAX + 1.0);
4632 (void)SvIOK_only_UV(sv);
4635 if (SvIVX(sv) == IV_MAX)
4636 sv_setnv(sv, (NV)IV_MAX + 1.0);
4638 (void)SvIOK_only(sv);
4644 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4645 if ((flags & SVTYPEMASK) < SVt_PVNV)
4646 sv_upgrade(sv, SVt_IV);
4647 (void)SvIOK_only(sv);
4652 while (isALPHA(*d)) d++;
4653 while (isDIGIT(*d)) d++;
4655 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4659 while (d >= SvPVX(sv)) {
4667 /* MKS: The original code here died if letters weren't consecutive.
4668 * at least it didn't have to worry about non-C locales. The
4669 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4670 * arranged in order (although not consecutively) and that only
4671 * [A-Za-z] are accepted by isALPHA in the C locale.
4673 if (*d != 'z' && *d != 'Z') {
4674 do { ++*d; } while (!isALPHA(*d));
4677 *(d--) -= 'z' - 'a';
4682 *(d--) -= 'z' - 'a' + 1;
4686 /* oh,oh, the number grew */
4687 SvGROW(sv, SvCUR(sv) + 2);
4689 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4700 Auto-decrement of the value in the SV.
4706 Perl_sv_dec(pTHX_ register SV *sv)
4714 if (SvTHINKFIRST(sv)) {
4715 if (SvREADONLY(sv)) {
4716 if (PL_curcop != &PL_compiling)
4717 Perl_croak(aTHX_ PL_no_modify);
4721 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4723 i = PTR2IV(SvRV(sv));
4728 flags = SvFLAGS(sv);
4729 if (flags & SVp_NOK) {
4731 (void)SvNOK_only(sv);
4734 if (flags & SVp_IOK) {
4736 if (SvUVX(sv) == 0) {
4737 (void)SvIOK_only(sv);
4741 (void)SvIOK_only_UV(sv);
4745 if (SvIVX(sv) == IV_MIN)
4746 sv_setnv(sv, (NV)IV_MIN - 1.0);
4748 (void)SvIOK_only(sv);
4754 if (!(flags & SVp_POK)) {
4755 if ((flags & SVTYPEMASK) < SVt_PVNV)
4756 sv_upgrade(sv, SVt_NV);
4758 (void)SvNOK_only(sv);
4761 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4765 =for apidoc sv_mortalcopy
4767 Creates a new SV which is a copy of the original SV. The new SV is marked
4773 /* Make a string that will exist for the duration of the expression
4774 * evaluation. Actually, it may have to last longer than that, but
4775 * hopefully we won't free it until it has been assigned to a
4776 * permanent location. */
4779 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4784 sv_setsv(sv,oldstr);
4786 PL_tmps_stack[++PL_tmps_ix] = sv;
4792 =for apidoc sv_newmortal
4794 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4800 Perl_sv_newmortal(pTHX)
4805 SvFLAGS(sv) = SVs_TEMP;
4807 PL_tmps_stack[++PL_tmps_ix] = sv;
4812 =for apidoc sv_2mortal
4814 Marks an SV as mortal. The SV will be destroyed when the current context
4820 /* same thing without the copying */
4823 Perl_sv_2mortal(pTHX_ register SV *sv)
4827 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4830 PL_tmps_stack[++PL_tmps_ix] = sv;
4838 Creates a new SV and copies a string into it. The reference count for the
4839 SV is set to 1. If C<len> is zero, Perl will compute the length using
4840 strlen(). For efficiency, consider using C<newSVpvn> instead.
4846 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4853 sv_setpvn(sv,s,len);
4858 =for apidoc newSVpvn
4860 Creates a new SV and copies a string into it. The reference count for the
4861 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4862 string. You are responsible for ensuring that the source string is at least
4869 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4874 sv_setpvn(sv,s,len);
4879 =for apidoc newSVpvn_share
4881 Creates a new SV and populates it with a string from
4882 the string table. Turns on READONLY and FAKE.
4883 The idea here is that as string table is used for shared hash
4884 keys these strings will have SvPVX == HeKEY and hash lookup
4885 will avoid string compare.
4891 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4895 PERL_HASH(hash, src, len);
4897 sv_upgrade(sv, SVt_PVIV);
4898 SvPVX(sv) = sharepvn(src, len, hash);
4908 #if defined(PERL_IMPLICIT_CONTEXT)
4910 Perl_newSVpvf_nocontext(const char* pat, ...)
4915 va_start(args, pat);
4916 sv = vnewSVpvf(pat, &args);
4923 =for apidoc newSVpvf
4925 Creates a new SV an initialize it with the string formatted like
4932 Perl_newSVpvf(pTHX_ const char* pat, ...)
4936 va_start(args, pat);
4937 sv = vnewSVpvf(pat, &args);
4943 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4947 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4954 Creates a new SV and copies a floating point value into it.
4955 The reference count for the SV is set to 1.
4961 Perl_newSVnv(pTHX_ NV n)
4973 Creates a new SV and copies an integer into it. The reference count for the
4980 Perl_newSViv(pTHX_ IV i)
4992 Creates a new SV and copies an unsigned integer into it.
4993 The reference count for the SV is set to 1.
4999 Perl_newSVuv(pTHX_ UV u)
5009 =for apidoc newRV_noinc
5011 Creates an RV wrapper for an SV. The reference count for the original
5012 SV is B<not> incremented.
5018 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5023 sv_upgrade(sv, SVt_RV);
5030 /* newRV_inc is #defined to newRV in sv.h */
5032 Perl_newRV(pTHX_ SV *tmpRef)
5034 return newRV_noinc(SvREFCNT_inc(tmpRef));
5040 Creates a new SV which is an exact duplicate of the original SV.
5045 /* make an exact duplicate of old */
5048 Perl_newSVsv(pTHX_ register SV *old)
5054 if (SvTYPE(old) == SVTYPEMASK) {
5055 if (ckWARN_d(WARN_INTERNAL))
5056 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5071 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5079 char todo[PERL_UCHAR_MAX+1];
5084 if (!*s) { /* reset ?? searches */
5085 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5086 pm->op_pmdynflags &= ~PMdf_USED;
5091 /* reset variables */
5093 if (!HvARRAY(stash))
5096 Zero(todo, 256, char);
5098 i = (unsigned char)*s;
5102 max = (unsigned char)*s++;
5103 for ( ; i <= max; i++) {
5106 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5107 for (entry = HvARRAY(stash)[i];
5109 entry = HeNEXT(entry))
5111 if (!todo[(U8)*HeKEY(entry)])
5113 gv = (GV*)HeVAL(entry);
5115 if (SvTHINKFIRST(sv)) {
5116 if (!SvREADONLY(sv) && SvROK(sv))
5121 if (SvTYPE(sv) >= SVt_PV) {
5123 if (SvPVX(sv) != Nullch)
5130 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5132 #ifdef USE_ENVIRON_ARRAY
5134 environ[0] = Nullch;
5143 Perl_sv_2io(pTHX_ SV *sv)
5149 switch (SvTYPE(sv)) {
5157 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5161 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5163 return sv_2io(SvRV(sv));
5164 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5170 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5177 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5184 return *gvp = Nullgv, Nullcv;
5185 switch (SvTYPE(sv)) {
5204 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5205 tryAMAGICunDEREF(to_cv);
5208 if (SvTYPE(sv) == SVt_PVCV) {
5217 Perl_croak(aTHX_ "Not a subroutine reference");
5222 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5228 if (lref && !GvCVu(gv)) {
5231 tmpsv = NEWSV(704,0);
5232 gv_efullname3(tmpsv, gv, Nullch);
5233 /* XXX this is probably not what they think they're getting.
5234 * It has the same effect as "sub name;", i.e. just a forward
5236 newSUB(start_subparse(FALSE, 0),
5237 newSVOP(OP_CONST, 0, tmpsv),
5242 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5251 Returns true if the SV has a true value by Perl's rules.
5257 Perl_sv_true(pTHX_ register SV *sv)
5263 if ((tXpv = (XPV*)SvANY(sv)) &&
5264 (tXpv->xpv_cur > 1 ||
5265 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5272 return SvIVX(sv) != 0;
5275 return SvNVX(sv) != 0.0;
5277 return sv_2bool(sv);
5283 Perl_sv_iv(pTHX_ register SV *sv)
5287 return (IV)SvUVX(sv);
5294 Perl_sv_uv(pTHX_ register SV *sv)
5299 return (UV)SvIVX(sv);
5305 Perl_sv_nv(pTHX_ register SV *sv)
5313 Perl_sv_pv(pTHX_ SV *sv)
5320 return sv_2pv(sv, &n_a);
5324 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5330 return sv_2pv(sv, lp);
5334 =for apidoc sv_pvn_force
5336 Get a sensible string out of the SV somehow.
5342 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5346 if (SvTHINKFIRST(sv) && !SvROK(sv))
5347 sv_force_normal(sv);
5353 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5354 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5355 PL_op_name[PL_op->op_type]);
5359 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5364 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5365 SvGROW(sv, len + 1);
5366 Move(s,SvPVX(sv),len,char);
5371 SvPOK_on(sv); /* validate pointer */
5373 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5374 PTR2UV(sv),SvPVX(sv)));
5381 Perl_sv_pvbyte(pTHX_ SV *sv)
5387 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5389 return sv_pvn(sv,lp);
5393 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5395 return sv_pvn_force(sv,lp);
5399 Perl_sv_pvutf8(pTHX_ SV *sv)
5401 sv_utf8_upgrade(sv);
5406 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5408 sv_utf8_upgrade(sv);
5409 return sv_pvn(sv,lp);
5413 =for apidoc sv_pvutf8n_force
5415 Get a sensible UTF8-encoded string out of the SV somehow. See
5422 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5424 sv_utf8_upgrade(sv);
5425 return sv_pvn_force(sv,lp);
5429 =for apidoc sv_reftype
5431 Returns a string describing what the SV is a reference to.
5437 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5439 if (ob && SvOBJECT(sv))
5440 return HvNAME(SvSTASH(sv));
5442 switch (SvTYPE(sv)) {
5456 case SVt_PVLV: return "LVALUE";
5457 case SVt_PVAV: return "ARRAY";
5458 case SVt_PVHV: return "HASH";
5459 case SVt_PVCV: return "CODE";
5460 case SVt_PVGV: return "GLOB";
5461 case SVt_PVFM: return "FORMAT";
5462 case SVt_PVIO: return "IO";
5463 default: return "UNKNOWN";
5469 =for apidoc sv_isobject
5471 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5472 object. If the SV is not an RV, or if the object is not blessed, then this
5479 Perl_sv_isobject(pTHX_ SV *sv)
5496 Returns a boolean indicating whether the SV is blessed into the specified
5497 class. This does not check for subtypes; use C<sv_derived_from> to verify
5498 an inheritance relationship.
5504 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5516 return strEQ(HvNAME(SvSTASH(sv)), name);
5522 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5523 it will be upgraded to one. If C<classname> is non-null then the new SV will
5524 be blessed in the specified package. The new SV is returned and its
5525 reference count is 1.
5531 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5537 SV_CHECK_THINKFIRST(rv);
5540 if (SvTYPE(rv) >= SVt_PVMG) {
5541 U32 refcnt = SvREFCNT(rv);
5545 SvREFCNT(rv) = refcnt;
5548 if (SvTYPE(rv) < SVt_RV)
5549 sv_upgrade(rv, SVt_RV);
5550 else if (SvTYPE(rv) > SVt_RV) {
5551 (void)SvOOK_off(rv);
5552 if (SvPVX(rv) && SvLEN(rv))
5553 Safefree(SvPVX(rv));
5563 HV* stash = gv_stashpv(classname, TRUE);
5564 (void)sv_bless(rv, stash);
5570 =for apidoc sv_setref_pv
5572 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5573 argument will be upgraded to an RV. That RV will be modified to point to
5574 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5575 into the SV. The C<classname> argument indicates the package for the
5576 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5577 will be returned and will have a reference count of 1.
5579 Do not use with other Perl types such as HV, AV, SV, CV, because those
5580 objects will become corrupted by the pointer copy process.
5582 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5588 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5591 sv_setsv(rv, &PL_sv_undef);
5595 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5600 =for apidoc sv_setref_iv
5602 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5603 argument will be upgraded to an RV. That RV will be modified to point to
5604 the new SV. The C<classname> argument indicates the package for the
5605 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5606 will be returned and will have a reference count of 1.
5612 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5614 sv_setiv(newSVrv(rv,classname), iv);
5619 =for apidoc sv_setref_nv
5621 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5622 argument will be upgraded to an RV. That RV will be modified to point to
5623 the new SV. The C<classname> argument indicates the package for the
5624 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5625 will be returned and will have a reference count of 1.
5631 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5633 sv_setnv(newSVrv(rv,classname), nv);
5638 =for apidoc sv_setref_pvn
5640 Copies a string into a new SV, optionally blessing the SV. The length of the
5641 string must be specified with C<n>. The C<rv> argument will be upgraded to
5642 an RV. That RV will be modified to point to the new SV. The C<classname>
5643 argument indicates the package for the blessing. Set C<classname> to
5644 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5645 a reference count of 1.
5647 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5653 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5655 sv_setpvn(newSVrv(rv,classname), pv, n);
5660 =for apidoc sv_bless
5662 Blesses an SV into a specified package. The SV must be an RV. The package
5663 must be designated by its stash (see C<gv_stashpv()>). The reference count
5664 of the SV is unaffected.
5670 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5674 Perl_croak(aTHX_ "Can't bless non-reference value");
5676 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5677 if (SvREADONLY(tmpRef))
5678 Perl_croak(aTHX_ PL_no_modify);
5679 if (SvOBJECT(tmpRef)) {
5680 if (SvTYPE(tmpRef) != SVt_PVIO)
5682 SvREFCNT_dec(SvSTASH(tmpRef));
5685 SvOBJECT_on(tmpRef);
5686 if (SvTYPE(tmpRef) != SVt_PVIO)
5688 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5689 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5700 S_sv_unglob(pTHX_ SV *sv)
5704 assert(SvTYPE(sv) == SVt_PVGV);
5709 SvREFCNT_dec(GvSTASH(sv));
5710 GvSTASH(sv) = Nullhv;
5712 sv_unmagic(sv, '*');
5713 Safefree(GvNAME(sv));
5716 /* need to keep SvANY(sv) in the right arena */
5717 xpvmg = new_XPVMG();
5718 StructCopy(SvANY(sv), xpvmg, XPVMG);
5719 del_XPVGV(SvANY(sv));
5722 SvFLAGS(sv) &= ~SVTYPEMASK;
5723 SvFLAGS(sv) |= SVt_PVMG;
5727 =for apidoc sv_unref_flags
5729 Unsets the RV status of the SV, and decrements the reference count of
5730 whatever was being referenced by the RV. This can almost be thought of
5731 as a reversal of C<newSVrv>. The C<cflags> argument can contain
5732 C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented
5733 (otherwise the decrementing is conditional on the reference count being
5734 different from one or the reference being a readonly SV).
5741 Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags)
5745 if (SvWEAKREF(sv)) {
5753 if (SvREFCNT(rv) != 1 || SvREADONLY(rv) || flags) /* SV_IMMEDIATE_UNREF */
5755 else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */
5756 sv_2mortal(rv); /* Schedule for freeing later */
5760 =for apidoc sv_unref
5762 Unsets the RV status of the SV, and decrements the reference count of
5763 whatever was being referenced by the RV. This can almost be thought of
5764 as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
5765 being zero. See C<SvROK_off>.
5771 Perl_sv_unref(pTHX_ SV *sv)
5773 sv_unref_flags(sv, 0);
5777 Perl_sv_taint(pTHX_ SV *sv)
5779 sv_magic((sv), Nullsv, 't', Nullch, 0);
5783 Perl_sv_untaint(pTHX_ SV *sv)
5785 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5786 MAGIC *mg = mg_find(sv, 't');
5793 Perl_sv_tainted(pTHX_ SV *sv)
5795 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5796 MAGIC *mg = mg_find(sv, 't');
5797 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5804 =for apidoc sv_setpviv
5806 Copies an integer into the given SV, also updating its string value.
5807 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5813 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5815 char buf[TYPE_CHARS(UV)];
5817 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5819 sv_setpvn(sv, ptr, ebuf - ptr);
5824 =for apidoc sv_setpviv_mg
5826 Like C<sv_setpviv>, but also handles 'set' magic.
5832 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5834 char buf[TYPE_CHARS(UV)];
5836 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5838 sv_setpvn(sv, ptr, ebuf - ptr);
5842 #if defined(PERL_IMPLICIT_CONTEXT)
5844 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5848 va_start(args, pat);
5849 sv_vsetpvf(sv, pat, &args);
5855 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5859 va_start(args, pat);
5860 sv_vsetpvf_mg(sv, pat, &args);
5866 =for apidoc sv_setpvf
5868 Processes its arguments like C<sprintf> and sets an SV to the formatted
5869 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5875 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5878 va_start(args, pat);
5879 sv_vsetpvf(sv, pat, &args);
5884 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5886 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5890 =for apidoc sv_setpvf_mg
5892 Like C<sv_setpvf>, but also handles 'set' magic.
5898 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5901 va_start(args, pat);
5902 sv_vsetpvf_mg(sv, pat, &args);
5907 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5909 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5913 #if defined(PERL_IMPLICIT_CONTEXT)
5915 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5919 va_start(args, pat);
5920 sv_vcatpvf(sv, pat, &args);
5925 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5929 va_start(args, pat);
5930 sv_vcatpvf_mg(sv, pat, &args);
5936 =for apidoc sv_catpvf
5938 Processes its arguments like C<sprintf> and appends the formatted output
5939 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5940 typically be called after calling this function to handle 'set' magic.
5946 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5949 va_start(args, pat);
5950 sv_vcatpvf(sv, pat, &args);
5955 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5957 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5961 =for apidoc sv_catpvf_mg
5963 Like C<sv_catpvf>, but also handles 'set' magic.
5969 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5972 va_start(args, pat);
5973 sv_vcatpvf_mg(sv, pat, &args);
5978 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5980 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5985 =for apidoc sv_vsetpvfn
5987 Works like C<vcatpvfn> but copies the text into the SV instead of
5994 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5996 sv_setpvn(sv, "", 0);
5997 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
6001 =for apidoc sv_vcatpvfn
6003 Processes its arguments like C<vsprintf> and appends the formatted output
6004 to an SV. Uses an array of SVs if the C style variable argument list is
6005 missing (NULL). When running with taint checks enabled, indicates via
6006 C<maybe_tainted> if results are untrustworthy (often due to the use of
6013 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6020 static char nullstr[] = "(null)";
6023 /* no matter what, this is a string now */
6024 (void)SvPV_force(sv, origlen);
6026 /* special-case "", "%s", and "%_" */
6029 if (patlen == 2 && pat[0] == '%') {
6033 char *s = va_arg(*args, char*);
6034 sv_catpv(sv, s ? s : nullstr);
6036 else if (svix < svmax) {
6037 sv_catsv(sv, *svargs);
6038 if (DO_UTF8(*svargs))
6044 argsv = va_arg(*args, SV*);
6045 sv_catsv(sv, argsv);
6050 /* See comment on '_' below */
6055 patend = (char*)pat + patlen;
6056 for (p = (char*)pat; p < patend; p = q) {
6059 bool vectorize = FALSE;
6066 bool has_precis = FALSE;
6068 bool is_utf = FALSE;
6071 U8 utf8buf[UTF8_MAXLEN+1];
6072 STRLEN esignlen = 0;
6074 char *eptr = Nullch;
6076 /* Times 4: a decimal digit takes more than 3 binary digits.
6077 * NV_DIG: mantissa takes than many decimal digits.
6078 * Plus 32: Playing safe. */
6079 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6080 /* large enough for "%#.#f" --chip */
6081 /* what about long double NVs? --jhi */
6084 U8 *vecstr = Null(U8*);
6096 STRLEN dotstrlen = 1;
6097 I32 epix = 0; /* explicit parameter index */
6098 I32 ewix = 0; /* explicit width index */
6099 bool asterisk = FALSE;
6101 for (q = p; q < patend && *q != '%'; ++q) ;
6103 sv_catpvn(sv, p, q - p);
6132 case '*': /* printf("%*vX",":",$ipv6addr) */
6137 vecsv = va_arg(*args, SV*);
6138 else if (svix < svmax)
6139 vecsv = svargs[svix++];
6142 dotstr = SvPVx(vecsv,dotstrlen);
6170 case '1': case '2': case '3':
6171 case '4': case '5': case '6':
6172 case '7': case '8': case '9':
6175 width = width * 10 + (*q++ - '0');
6177 if (asterisk && ewix == 0) {
6182 } else if (epix == 0) {
6194 i = va_arg(*args, int);
6196 i = (ewix ? ewix <= svmax : svix < svmax) ?
6197 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6199 width = (i < 0) ? -i : i;
6208 i = va_arg(*args, int);
6210 i = (ewix ? ewix <= svmax : svix < svmax)
6211 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6212 precis = (i < 0) ? 0 : i;
6218 precis = precis * 10 + (*q++ - '0');
6225 vecsv = va_arg(*args, SV*);
6226 vecstr = (U8*)SvPVx(vecsv,veclen);
6227 utf = DO_UTF8(vecsv);
6229 else if (epix ? epix <= svmax : svix < svmax) {
6230 vecsv = svargs[epix ? epix-1 : svix++];
6231 vecstr = (U8*)SvPVx(vecsv,veclen);
6232 utf = DO_UTF8(vecsv);
6243 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6254 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6255 if (*(q + 1) == 'l') { /* lld, llf */
6282 uv = va_arg(*args, int);
6284 uv = (epix ? epix <= svmax : svix < svmax) ?
6285 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6286 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6287 eptr = (char*)utf8buf;
6288 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6300 eptr = va_arg(*args, char*);
6302 #ifdef MACOS_TRADITIONAL
6303 /* On MacOS, %#s format is used for Pascal strings */
6308 elen = strlen(eptr);
6311 elen = sizeof nullstr - 1;
6314 else if (epix ? epix <= svmax : svix < svmax) {
6315 argsv = svargs[epix ? epix-1 : svix++];
6316 eptr = SvPVx(argsv, elen);
6317 if (DO_UTF8(argsv)) {
6318 if (has_precis && precis < elen) {
6320 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6323 if (width) { /* fudge width (can't fudge elen) */
6324 width += elen - sv_len_utf8(argsv);
6333 * The "%_" hack might have to be changed someday,
6334 * if ISO or ANSI decide to use '_' for something.
6335 * So we keep it hidden from users' code.
6339 argsv = va_arg(*args,SV*);
6340 eptr = SvPVx(argsv, elen);
6346 if (has_precis && elen > precis)
6356 uv = PTR2UV(va_arg(*args, void*));
6358 uv = (epix ? epix <= svmax : svix < svmax) ?
6359 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6379 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6389 case 'h': iv = (short)va_arg(*args, int); break;
6390 default: iv = va_arg(*args, int); break;
6391 case 'l': iv = va_arg(*args, long); break;
6392 case 'V': iv = va_arg(*args, IV); break;
6394 case 'q': iv = va_arg(*args, Quad_t); break;
6399 iv = (epix ? epix <= svmax : svix < svmax) ?
6400 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6402 case 'h': iv = (short)iv; break;
6404 case 'l': iv = (long)iv; break;
6407 case 'q': iv = (Quad_t)iv; break;
6414 esignbuf[esignlen++] = plus;
6418 esignbuf[esignlen++] = '-';
6462 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6472 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6473 default: uv = va_arg(*args, unsigned); break;
6474 case 'l': uv = va_arg(*args, unsigned long); break;
6475 case 'V': uv = va_arg(*args, UV); break;
6477 case 'q': uv = va_arg(*args, Quad_t); break;
6482 uv = (epix ? epix <= svmax : svix < svmax) ?
6483 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6485 case 'h': uv = (unsigned short)uv; break;
6487 case 'l': uv = (unsigned long)uv; break;
6490 case 'q': uv = (Quad_t)uv; break;
6496 eptr = ebuf + sizeof ebuf;
6502 p = (char*)((c == 'X')
6503 ? "0123456789ABCDEF" : "0123456789abcdef");
6509 esignbuf[esignlen++] = '0';
6510 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6516 *--eptr = '0' + dig;
6518 if (alt && *eptr != '0')
6524 *--eptr = '0' + dig;
6527 esignbuf[esignlen++] = '0';
6528 esignbuf[esignlen++] = 'b';
6531 default: /* it had better be ten or less */
6532 #if defined(PERL_Y2KWARN)
6533 if (ckWARN(WARN_Y2K)) {
6535 char *s = SvPV(sv,n);
6536 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6537 && (n == 2 || !isDIGIT(s[n-3])))
6539 Perl_warner(aTHX_ WARN_Y2K,
6540 "Possible Y2K bug: %%%c %s",
6541 c, "format string following '19'");
6547 *--eptr = '0' + dig;
6548 } while (uv /= base);
6551 elen = (ebuf + sizeof ebuf) - eptr;
6554 zeros = precis - elen;
6555 else if (precis == 0 && elen == 1 && *eptr == '0')
6560 /* FLOATING POINT */
6563 c = 'f'; /* maybe %F isn't supported here */
6569 /* This is evil, but floating point is even more evil */
6573 nv = va_arg(*args, NV);
6575 nv = (epix ? epix <= svmax : svix < svmax) ?
6576 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6579 if (c != 'e' && c != 'E') {
6581 (void)Perl_frexp(nv, &i);
6582 if (i == PERL_INT_MIN)
6583 Perl_die(aTHX_ "panic: frexp");
6585 need = BIT_DIGITS(i);
6587 need += has_precis ? precis : 6; /* known default */
6591 need += 20; /* fudge factor */
6592 if (PL_efloatsize < need) {
6593 Safefree(PL_efloatbuf);
6594 PL_efloatsize = need + 20; /* more fudge */
6595 New(906, PL_efloatbuf, PL_efloatsize, char);
6596 PL_efloatbuf[0] = '\0';
6599 eptr = ebuf + sizeof ebuf;
6602 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6604 /* Copy the one or more characters in a long double
6605 * format before the 'base' ([efgEFG]) character to
6606 * the format string. */
6607 static char const prifldbl[] = PERL_PRIfldbl;
6608 char const *p = prifldbl + sizeof(prifldbl) - 3;
6609 while (p >= prifldbl) { *--eptr = *p--; }
6614 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6619 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6631 /* No taint. Otherwise we are in the strange situation
6632 * where printf() taints but print($float) doesn't.
6634 (void)sprintf(PL_efloatbuf, eptr, nv);
6636 eptr = PL_efloatbuf;
6637 elen = strlen(PL_efloatbuf);
6644 i = SvCUR(sv) - origlen;
6647 case 'h': *(va_arg(*args, short*)) = i; break;
6648 default: *(va_arg(*args, int*)) = i; break;
6649 case 'l': *(va_arg(*args, long*)) = i; break;
6650 case 'V': *(va_arg(*args, IV*)) = i; break;
6652 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6656 else if (epix ? epix <= svmax : svix < svmax)
6657 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6658 continue; /* not "break" */
6665 if (!args && ckWARN(WARN_PRINTF) &&
6666 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6667 SV *msg = sv_newmortal();
6668 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6669 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6672 Perl_sv_catpvf(aTHX_ msg,
6673 "\"%%%c\"", c & 0xFF);
6675 Perl_sv_catpvf(aTHX_ msg,
6676 "\"%%\\%03"UVof"\"",
6679 sv_catpv(msg, "end of string");
6680 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6683 /* output mangled stuff ... */
6689 /* ... right here, because formatting flags should not apply */
6690 SvGROW(sv, SvCUR(sv) + elen + 1);
6692 memcpy(p, eptr, elen);
6695 SvCUR(sv) = p - SvPVX(sv);
6696 continue; /* not "break" */
6699 have = esignlen + zeros + elen;
6700 need = (have > width ? have : width);
6703 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6705 if (esignlen && fill == '0') {
6706 for (i = 0; i < esignlen; i++)
6710 memset(p, fill, gap);
6713 if (esignlen && fill != '0') {
6714 for (i = 0; i < esignlen; i++)
6718 for (i = zeros; i; i--)
6722 memcpy(p, eptr, elen);
6726 memset(p, ' ', gap);
6731 memcpy(p, dotstr, dotstrlen);
6735 vectorize = FALSE; /* done iterating over vecstr */
6740 SvCUR(sv) = p - SvPVX(sv);
6748 #if defined(USE_ITHREADS)
6750 #if defined(USE_THREADS)
6751 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6754 #ifndef GpREFCNT_inc
6755 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6759 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6760 #define av_dup(s) (AV*)sv_dup((SV*)s)
6761 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6762 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6763 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6764 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6765 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6766 #define io_dup(s) (IO*)sv_dup((SV*)s)
6767 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6768 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6769 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6770 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6771 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6774 Perl_re_dup(pTHX_ REGEXP *r)
6776 /* XXX fix when pmop->op_pmregexp becomes shared */
6777 return ReREFCNT_inc(r);
6781 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6785 return (PerlIO*)NULL;
6787 /* look for it in the table first */
6788 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6792 /* create anew and remember what it is */
6793 ret = PerlIO_fdupopen(aTHX_ fp);
6794 ptr_table_store(PL_ptr_table, fp, ret);
6799 Perl_dirp_dup(pTHX_ DIR *dp)
6808 Perl_gp_dup(pTHX_ GP *gp)
6813 /* look for it in the table first */
6814 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6818 /* create anew and remember what it is */
6819 Newz(0, ret, 1, GP);
6820 ptr_table_store(PL_ptr_table, gp, ret);
6823 ret->gp_refcnt = 0; /* must be before any other dups! */
6824 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6825 ret->gp_io = io_dup_inc(gp->gp_io);
6826 ret->gp_form = cv_dup_inc(gp->gp_form);
6827 ret->gp_av = av_dup_inc(gp->gp_av);
6828 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6829 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6830 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6831 ret->gp_cvgen = gp->gp_cvgen;
6832 ret->gp_flags = gp->gp_flags;
6833 ret->gp_line = gp->gp_line;
6834 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6839 Perl_mg_dup(pTHX_ MAGIC *mg)
6841 MAGIC *mgret = (MAGIC*)NULL;
6844 return (MAGIC*)NULL;
6845 /* look for it in the table first */
6846 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6850 for (; mg; mg = mg->mg_moremagic) {
6852 Newz(0, nmg, 1, MAGIC);
6856 mgprev->mg_moremagic = nmg;
6857 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6858 nmg->mg_private = mg->mg_private;
6859 nmg->mg_type = mg->mg_type;
6860 nmg->mg_flags = mg->mg_flags;
6861 if (mg->mg_type == 'r') {
6862 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6865 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6866 ? sv_dup_inc(mg->mg_obj)
6867 : sv_dup(mg->mg_obj);
6869 nmg->mg_len = mg->mg_len;
6870 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6871 if (mg->mg_ptr && mg->mg_type != 'g') {
6872 if (mg->mg_len >= 0) {
6873 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6874 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6875 AMT *amtp = (AMT*)mg->mg_ptr;
6876 AMT *namtp = (AMT*)nmg->mg_ptr;
6878 for (i = 1; i < NofAMmeth; i++) {
6879 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6883 else if (mg->mg_len == HEf_SVKEY)
6884 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6892 Perl_ptr_table_new(pTHX)
6895 Newz(0, tbl, 1, PTR_TBL_t);
6898 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6903 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6905 PTR_TBL_ENT_t *tblent;
6906 UV hash = PTR2UV(sv);
6908 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6909 for (; tblent; tblent = tblent->next) {
6910 if (tblent->oldval == sv)
6911 return tblent->newval;
6917 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6919 PTR_TBL_ENT_t *tblent, **otblent;
6920 /* XXX this may be pessimal on platforms where pointers aren't good
6921 * hash values e.g. if they grow faster in the most significant
6923 UV hash = PTR2UV(oldv);
6927 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6928 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6929 if (tblent->oldval == oldv) {
6930 tblent->newval = newv;
6935 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6936 tblent->oldval = oldv;
6937 tblent->newval = newv;
6938 tblent->next = *otblent;
6941 if (i && tbl->tbl_items > tbl->tbl_max)
6942 ptr_table_split(tbl);
6946 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6948 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6949 UV oldsize = tbl->tbl_max + 1;
6950 UV newsize = oldsize * 2;
6953 Renew(ary, newsize, PTR_TBL_ENT_t*);
6954 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6955 tbl->tbl_max = --newsize;
6957 for (i=0; i < oldsize; i++, ary++) {
6958 PTR_TBL_ENT_t **curentp, **entp, *ent;
6961 curentp = ary + oldsize;
6962 for (entp = ary, ent = *ary; ent; ent = *entp) {
6963 if ((newsize & PTR2UV(ent->oldval)) != i) {
6965 ent->next = *curentp;
6980 Perl_sv_dup(pTHX_ SV *sstr)
6984 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6986 /* look for it in the table first */
6987 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6991 /* create anew and remember what it is */
6993 ptr_table_store(PL_ptr_table, sstr, dstr);
6996 SvFLAGS(dstr) = SvFLAGS(sstr);
6997 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6998 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7001 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7002 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7003 PL_watch_pvx, SvPVX(sstr));
7006 switch (SvTYPE(sstr)) {
7011 SvANY(dstr) = new_XIV();
7012 SvIVX(dstr) = SvIVX(sstr);
7015 SvANY(dstr) = new_XNV();
7016 SvNVX(dstr) = SvNVX(sstr);
7019 SvANY(dstr) = new_XRV();
7020 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7023 SvANY(dstr) = new_XPV();
7024 SvCUR(dstr) = SvCUR(sstr);
7025 SvLEN(dstr) = SvLEN(sstr);
7027 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7028 else if (SvPVX(sstr) && SvLEN(sstr))
7029 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7031 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7034 SvANY(dstr) = new_XPVIV();
7035 SvCUR(dstr) = SvCUR(sstr);
7036 SvLEN(dstr) = SvLEN(sstr);
7037 SvIVX(dstr) = SvIVX(sstr);
7039 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7040 else if (SvPVX(sstr) && SvLEN(sstr))
7041 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7043 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7046 SvANY(dstr) = new_XPVNV();
7047 SvCUR(dstr) = SvCUR(sstr);
7048 SvLEN(dstr) = SvLEN(sstr);
7049 SvIVX(dstr) = SvIVX(sstr);
7050 SvNVX(dstr) = SvNVX(sstr);
7052 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7053 else if (SvPVX(sstr) && SvLEN(sstr))
7054 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7056 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7059 SvANY(dstr) = new_XPVMG();
7060 SvCUR(dstr) = SvCUR(sstr);
7061 SvLEN(dstr) = SvLEN(sstr);
7062 SvIVX(dstr) = SvIVX(sstr);
7063 SvNVX(dstr) = SvNVX(sstr);
7064 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7065 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7067 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7068 else if (SvPVX(sstr) && SvLEN(sstr))
7069 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7071 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7074 SvANY(dstr) = new_XPVBM();
7075 SvCUR(dstr) = SvCUR(sstr);
7076 SvLEN(dstr) = SvLEN(sstr);
7077 SvIVX(dstr) = SvIVX(sstr);
7078 SvNVX(dstr) = SvNVX(sstr);
7079 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7080 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7082 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7083 else if (SvPVX(sstr) && SvLEN(sstr))
7084 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7086 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7087 BmRARE(dstr) = BmRARE(sstr);
7088 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7089 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7092 SvANY(dstr) = new_XPVLV();
7093 SvCUR(dstr) = SvCUR(sstr);
7094 SvLEN(dstr) = SvLEN(sstr);
7095 SvIVX(dstr) = SvIVX(sstr);
7096 SvNVX(dstr) = SvNVX(sstr);
7097 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7098 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7100 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7101 else if (SvPVX(sstr) && SvLEN(sstr))
7102 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7104 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7105 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7106 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7107 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7108 LvTYPE(dstr) = LvTYPE(sstr);
7111 SvANY(dstr) = new_XPVGV();
7112 SvCUR(dstr) = SvCUR(sstr);
7113 SvLEN(dstr) = SvLEN(sstr);
7114 SvIVX(dstr) = SvIVX(sstr);
7115 SvNVX(dstr) = SvNVX(sstr);
7116 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7117 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7119 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7120 else if (SvPVX(sstr) && SvLEN(sstr))
7121 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7123 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7124 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7125 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7126 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7127 GvFLAGS(dstr) = GvFLAGS(sstr);
7128 GvGP(dstr) = gp_dup(GvGP(sstr));
7129 (void)GpREFCNT_inc(GvGP(dstr));
7132 SvANY(dstr) = new_XPVIO();
7133 SvCUR(dstr) = SvCUR(sstr);
7134 SvLEN(dstr) = SvLEN(sstr);
7135 SvIVX(dstr) = SvIVX(sstr);
7136 SvNVX(dstr) = SvNVX(sstr);
7137 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7138 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7140 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7141 else if (SvPVX(sstr) && SvLEN(sstr))
7142 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7144 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7145 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7146 if (IoOFP(sstr) == IoIFP(sstr))
7147 IoOFP(dstr) = IoIFP(dstr);
7149 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7150 /* PL_rsfp_filters entries have fake IoDIRP() */
7151 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7152 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7154 IoDIRP(dstr) = IoDIRP(sstr);
7155 IoLINES(dstr) = IoLINES(sstr);
7156 IoPAGE(dstr) = IoPAGE(sstr);
7157 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7158 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7159 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7160 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7161 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7162 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7163 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7164 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7165 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7166 IoTYPE(dstr) = IoTYPE(sstr);
7167 IoFLAGS(dstr) = IoFLAGS(sstr);
7170 SvANY(dstr) = new_XPVAV();
7171 SvCUR(dstr) = SvCUR(sstr);
7172 SvLEN(dstr) = SvLEN(sstr);
7173 SvIVX(dstr) = SvIVX(sstr);
7174 SvNVX(dstr) = SvNVX(sstr);
7175 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7176 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7177 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7178 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7179 if (AvARRAY((AV*)sstr)) {
7180 SV **dst_ary, **src_ary;
7181 SSize_t items = AvFILLp((AV*)sstr) + 1;
7183 src_ary = AvARRAY((AV*)sstr);
7184 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7185 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7186 SvPVX(dstr) = (char*)dst_ary;
7187 AvALLOC((AV*)dstr) = dst_ary;
7188 if (AvREAL((AV*)sstr)) {
7190 *dst_ary++ = sv_dup_inc(*src_ary++);
7194 *dst_ary++ = sv_dup(*src_ary++);
7196 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7197 while (items-- > 0) {
7198 *dst_ary++ = &PL_sv_undef;
7202 SvPVX(dstr) = Nullch;
7203 AvALLOC((AV*)dstr) = (SV**)NULL;
7207 SvANY(dstr) = new_XPVHV();
7208 SvCUR(dstr) = SvCUR(sstr);
7209 SvLEN(dstr) = SvLEN(sstr);
7210 SvIVX(dstr) = SvIVX(sstr);
7211 SvNVX(dstr) = SvNVX(sstr);
7212 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7213 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7214 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7215 if (HvARRAY((HV*)sstr)) {
7217 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7218 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7219 Newz(0, dxhv->xhv_array,
7220 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7221 while (i <= sxhv->xhv_max) {
7222 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7223 !!HvSHAREKEYS(sstr));
7226 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7229 SvPVX(dstr) = Nullch;
7230 HvEITER((HV*)dstr) = (HE*)NULL;
7232 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7233 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7236 SvANY(dstr) = new_XPVFM();
7237 FmLINES(dstr) = FmLINES(sstr);
7241 SvANY(dstr) = new_XPVCV();
7243 SvCUR(dstr) = SvCUR(sstr);
7244 SvLEN(dstr) = SvLEN(sstr);
7245 SvIVX(dstr) = SvIVX(sstr);
7246 SvNVX(dstr) = SvNVX(sstr);
7247 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7248 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7249 if (SvPVX(sstr) && SvLEN(sstr))
7250 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7252 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7253 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7254 CvSTART(dstr) = CvSTART(sstr);
7255 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7256 CvXSUB(dstr) = CvXSUB(sstr);
7257 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7258 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7259 CvDEPTH(dstr) = CvDEPTH(sstr);
7260 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7261 /* XXX padlists are real, but pretend to be not */
7262 AvREAL_on(CvPADLIST(sstr));
7263 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7264 AvREAL_off(CvPADLIST(sstr));
7265 AvREAL_off(CvPADLIST(dstr));
7268 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7269 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7270 CvFLAGS(dstr) = CvFLAGS(sstr);
7273 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7277 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7284 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7289 return (PERL_CONTEXT*)NULL;
7291 /* look for it in the table first */
7292 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7296 /* create anew and remember what it is */
7297 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7298 ptr_table_store(PL_ptr_table, cxs, ncxs);
7301 PERL_CONTEXT *cx = &cxs[ix];
7302 PERL_CONTEXT *ncx = &ncxs[ix];
7303 ncx->cx_type = cx->cx_type;
7304 if (CxTYPE(cx) == CXt_SUBST) {
7305 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7308 ncx->blk_oldsp = cx->blk_oldsp;
7309 ncx->blk_oldcop = cx->blk_oldcop;
7310 ncx->blk_oldretsp = cx->blk_oldretsp;
7311 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7312 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7313 ncx->blk_oldpm = cx->blk_oldpm;
7314 ncx->blk_gimme = cx->blk_gimme;
7315 switch (CxTYPE(cx)) {
7317 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7318 ? cv_dup_inc(cx->blk_sub.cv)
7319 : cv_dup(cx->blk_sub.cv));
7320 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7321 ? av_dup_inc(cx->blk_sub.argarray)
7323 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7324 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7325 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7326 ncx->blk_sub.lval = cx->blk_sub.lval;
7329 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7330 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7331 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7332 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7333 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7336 ncx->blk_loop.label = cx->blk_loop.label;
7337 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7338 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7339 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7340 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7341 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7342 ? cx->blk_loop.iterdata
7343 : gv_dup((GV*)cx->blk_loop.iterdata));
7344 ncx->blk_loop.oldcurpad
7345 = (SV**)ptr_table_fetch(PL_ptr_table,
7346 cx->blk_loop.oldcurpad);
7347 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7348 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7349 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7350 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7351 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7354 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7355 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7356 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7357 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7370 Perl_si_dup(pTHX_ PERL_SI *si)
7375 return (PERL_SI*)NULL;
7377 /* look for it in the table first */
7378 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7382 /* create anew and remember what it is */
7383 Newz(56, nsi, 1, PERL_SI);
7384 ptr_table_store(PL_ptr_table, si, nsi);
7386 nsi->si_stack = av_dup_inc(si->si_stack);
7387 nsi->si_cxix = si->si_cxix;
7388 nsi->si_cxmax = si->si_cxmax;
7389 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7390 nsi->si_type = si->si_type;
7391 nsi->si_prev = si_dup(si->si_prev);
7392 nsi->si_next = si_dup(si->si_next);
7393 nsi->si_markoff = si->si_markoff;
7398 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7399 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7400 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7401 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7402 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7403 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7404 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7405 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7406 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7407 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7408 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7409 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7412 #define pv_dup_inc(p) SAVEPV(p)
7413 #define pv_dup(p) SAVEPV(p)
7414 #define svp_dup_inc(p,pp) any_dup(p,pp)
7417 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7424 /* look for it in the table first */
7425 ret = ptr_table_fetch(PL_ptr_table, v);
7429 /* see if it is part of the interpreter structure */
7430 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7431 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7439 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7441 ANY *ss = proto_perl->Tsavestack;
7442 I32 ix = proto_perl->Tsavestack_ix;
7443 I32 max = proto_perl->Tsavestack_max;
7456 void (*dptr) (void*);
7457 void (*dxptr) (pTHXo_ void*);
7460 Newz(54, nss, max, ANY);
7466 case SAVEt_ITEM: /* normal string */
7467 sv = (SV*)POPPTR(ss,ix);
7468 TOPPTR(nss,ix) = sv_dup_inc(sv);
7469 sv = (SV*)POPPTR(ss,ix);
7470 TOPPTR(nss,ix) = sv_dup_inc(sv);
7472 case SAVEt_SV: /* scalar reference */
7473 sv = (SV*)POPPTR(ss,ix);
7474 TOPPTR(nss,ix) = sv_dup_inc(sv);
7475 gv = (GV*)POPPTR(ss,ix);
7476 TOPPTR(nss,ix) = gv_dup_inc(gv);
7478 case SAVEt_GENERIC_PVREF: /* generic char* */
7479 c = (char*)POPPTR(ss,ix);
7480 TOPPTR(nss,ix) = pv_dup(c);
7481 ptr = POPPTR(ss,ix);
7482 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7484 case SAVEt_GENERIC_SVREF: /* generic sv */
7485 case SAVEt_SVREF: /* scalar reference */
7486 sv = (SV*)POPPTR(ss,ix);
7487 TOPPTR(nss,ix) = sv_dup_inc(sv);
7488 ptr = POPPTR(ss,ix);
7489 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7491 case SAVEt_AV: /* array reference */
7492 av = (AV*)POPPTR(ss,ix);
7493 TOPPTR(nss,ix) = av_dup_inc(av);
7494 gv = (GV*)POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = gv_dup(gv);
7497 case SAVEt_HV: /* hash reference */
7498 hv = (HV*)POPPTR(ss,ix);
7499 TOPPTR(nss,ix) = hv_dup_inc(hv);
7500 gv = (GV*)POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = gv_dup(gv);
7503 case SAVEt_INT: /* int reference */
7504 ptr = POPPTR(ss,ix);
7505 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7506 intval = (int)POPINT(ss,ix);
7507 TOPINT(nss,ix) = intval;
7509 case SAVEt_LONG: /* long reference */
7510 ptr = POPPTR(ss,ix);
7511 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7512 longval = (long)POPLONG(ss,ix);
7513 TOPLONG(nss,ix) = longval;
7515 case SAVEt_I32: /* I32 reference */
7516 case SAVEt_I16: /* I16 reference */
7517 case SAVEt_I8: /* I8 reference */
7518 ptr = POPPTR(ss,ix);
7519 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7523 case SAVEt_IV: /* IV reference */
7524 ptr = POPPTR(ss,ix);
7525 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7529 case SAVEt_SPTR: /* SV* reference */
7530 ptr = POPPTR(ss,ix);
7531 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7532 sv = (SV*)POPPTR(ss,ix);
7533 TOPPTR(nss,ix) = sv_dup(sv);
7535 case SAVEt_VPTR: /* random* reference */
7536 ptr = POPPTR(ss,ix);
7537 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7538 ptr = POPPTR(ss,ix);
7539 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7541 case SAVEt_PPTR: /* char* reference */
7542 ptr = POPPTR(ss,ix);
7543 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7544 c = (char*)POPPTR(ss,ix);
7545 TOPPTR(nss,ix) = pv_dup(c);
7547 case SAVEt_HPTR: /* HV* reference */
7548 ptr = POPPTR(ss,ix);
7549 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7550 hv = (HV*)POPPTR(ss,ix);
7551 TOPPTR(nss,ix) = hv_dup(hv);
7553 case SAVEt_APTR: /* AV* reference */
7554 ptr = POPPTR(ss,ix);
7555 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7556 av = (AV*)POPPTR(ss,ix);
7557 TOPPTR(nss,ix) = av_dup(av);
7560 gv = (GV*)POPPTR(ss,ix);
7561 TOPPTR(nss,ix) = gv_dup(gv);
7563 case SAVEt_GP: /* scalar reference */
7564 gp = (GP*)POPPTR(ss,ix);
7565 TOPPTR(nss,ix) = gp = gp_dup(gp);
7566 (void)GpREFCNT_inc(gp);
7567 gv = (GV*)POPPTR(ss,ix);
7568 TOPPTR(nss,ix) = gv_dup_inc(c);
7569 c = (char*)POPPTR(ss,ix);
7570 TOPPTR(nss,ix) = pv_dup(c);
7577 sv = (SV*)POPPTR(ss,ix);
7578 TOPPTR(nss,ix) = sv_dup_inc(sv);
7581 ptr = POPPTR(ss,ix);
7582 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7583 /* these are assumed to be refcounted properly */
7584 switch (((OP*)ptr)->op_type) {
7591 TOPPTR(nss,ix) = ptr;
7596 TOPPTR(nss,ix) = Nullop;
7601 TOPPTR(nss,ix) = Nullop;
7604 c = (char*)POPPTR(ss,ix);
7605 TOPPTR(nss,ix) = pv_dup_inc(c);
7608 longval = POPLONG(ss,ix);
7609 TOPLONG(nss,ix) = longval;
7612 hv = (HV*)POPPTR(ss,ix);
7613 TOPPTR(nss,ix) = hv_dup_inc(hv);
7614 c = (char*)POPPTR(ss,ix);
7615 TOPPTR(nss,ix) = pv_dup_inc(c);
7619 case SAVEt_DESTRUCTOR:
7620 ptr = POPPTR(ss,ix);
7621 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7622 dptr = POPDPTR(ss,ix);
7623 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7625 case SAVEt_DESTRUCTOR_X:
7626 ptr = POPPTR(ss,ix);
7627 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7628 dxptr = POPDXPTR(ss,ix);
7629 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7631 case SAVEt_REGCONTEXT:
7637 case SAVEt_STACK_POS: /* Position on Perl stack */
7641 case SAVEt_AELEM: /* array element */
7642 sv = (SV*)POPPTR(ss,ix);
7643 TOPPTR(nss,ix) = sv_dup_inc(sv);
7646 av = (AV*)POPPTR(ss,ix);
7647 TOPPTR(nss,ix) = av_dup_inc(av);
7649 case SAVEt_HELEM: /* hash element */
7650 sv = (SV*)POPPTR(ss,ix);
7651 TOPPTR(nss,ix) = sv_dup_inc(sv);
7652 sv = (SV*)POPPTR(ss,ix);
7653 TOPPTR(nss,ix) = sv_dup_inc(sv);
7654 hv = (HV*)POPPTR(ss,ix);
7655 TOPPTR(nss,ix) = hv_dup_inc(hv);
7658 ptr = POPPTR(ss,ix);
7659 TOPPTR(nss,ix) = ptr;
7666 av = (AV*)POPPTR(ss,ix);
7667 TOPPTR(nss,ix) = av_dup(av);
7670 longval = (long)POPLONG(ss,ix);
7671 TOPLONG(nss,ix) = longval;
7672 ptr = POPPTR(ss,ix);
7673 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7674 sv = (SV*)POPPTR(ss,ix);
7675 TOPPTR(nss,ix) = sv_dup(sv);
7678 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7690 perl_clone(PerlInterpreter *proto_perl, UV flags)
7693 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7696 #ifdef PERL_IMPLICIT_SYS
7697 return perl_clone_using(proto_perl, flags,
7699 proto_perl->IMemShared,
7700 proto_perl->IMemParse,
7710 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7711 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7712 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7713 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7714 struct IPerlDir* ipD, struct IPerlSock* ipS,
7715 struct IPerlProc* ipP)
7717 /* XXX many of the string copies here can be optimized if they're
7718 * constants; they need to be allocated as common memory and just
7719 * their pointers copied. */
7723 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7725 PERL_SET_THX(pPerl);
7726 # else /* !PERL_OBJECT */
7727 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7728 PERL_SET_THX(my_perl);
7731 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7736 # else /* !DEBUGGING */
7737 Zero(my_perl, 1, PerlInterpreter);
7738 # endif /* DEBUGGING */
7742 PL_MemShared = ipMS;
7750 # endif /* PERL_OBJECT */
7751 #else /* !PERL_IMPLICIT_SYS */
7753 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7754 PERL_SET_THX(my_perl);
7757 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7762 # else /* !DEBUGGING */
7763 Zero(my_perl, 1, PerlInterpreter);
7764 # endif /* DEBUGGING */
7765 #endif /* PERL_IMPLICIT_SYS */
7768 PL_xiv_arenaroot = NULL;
7770 PL_xnv_arenaroot = NULL;
7772 PL_xrv_arenaroot = NULL;
7774 PL_xpv_arenaroot = NULL;
7776 PL_xpviv_arenaroot = NULL;
7777 PL_xpviv_root = NULL;
7778 PL_xpvnv_arenaroot = NULL;
7779 PL_xpvnv_root = NULL;
7780 PL_xpvcv_arenaroot = NULL;
7781 PL_xpvcv_root = NULL;
7782 PL_xpvav_arenaroot = NULL;
7783 PL_xpvav_root = NULL;
7784 PL_xpvhv_arenaroot = NULL;
7785 PL_xpvhv_root = NULL;
7786 PL_xpvmg_arenaroot = NULL;
7787 PL_xpvmg_root = NULL;
7788 PL_xpvlv_arenaroot = NULL;
7789 PL_xpvlv_root = NULL;
7790 PL_xpvbm_arenaroot = NULL;
7791 PL_xpvbm_root = NULL;
7792 PL_he_arenaroot = NULL;
7794 PL_nice_chunk = NULL;
7795 PL_nice_chunk_size = 0;
7798 PL_sv_root = Nullsv;
7799 PL_sv_arenaroot = Nullsv;
7801 PL_debug = proto_perl->Idebug;
7803 /* create SV map for pointer relocation */
7804 PL_ptr_table = ptr_table_new();
7806 /* initialize these special pointers as early as possible */
7807 SvANY(&PL_sv_undef) = NULL;
7808 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7809 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7810 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7813 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7815 SvANY(&PL_sv_no) = new_XPVNV();
7817 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7818 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7819 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7820 SvCUR(&PL_sv_no) = 0;
7821 SvLEN(&PL_sv_no) = 1;
7822 SvNVX(&PL_sv_no) = 0;
7823 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7826 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7828 SvANY(&PL_sv_yes) = new_XPVNV();
7830 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7831 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7832 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7833 SvCUR(&PL_sv_yes) = 1;
7834 SvLEN(&PL_sv_yes) = 2;
7835 SvNVX(&PL_sv_yes) = 1;
7836 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7838 /* create shared string table */
7839 PL_strtab = newHV();
7840 HvSHAREKEYS_off(PL_strtab);
7841 hv_ksplit(PL_strtab, 512);
7842 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7844 PL_compiling = proto_perl->Icompiling;
7845 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7846 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7847 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7848 if (!specialWARN(PL_compiling.cop_warnings))
7849 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7850 if (!specialCopIO(PL_compiling.cop_io))
7851 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
7852 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7854 /* pseudo environmental stuff */
7855 PL_origargc = proto_perl->Iorigargc;
7857 New(0, PL_origargv, i+1, char*);
7858 PL_origargv[i] = '\0';
7860 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7862 PL_envgv = gv_dup(proto_perl->Ienvgv);
7863 PL_incgv = gv_dup(proto_perl->Iincgv);
7864 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7865 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7866 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7867 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7870 PL_minus_c = proto_perl->Iminus_c;
7871 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7872 PL_localpatches = proto_perl->Ilocalpatches;
7873 PL_splitstr = proto_perl->Isplitstr;
7874 PL_preprocess = proto_perl->Ipreprocess;
7875 PL_minus_n = proto_perl->Iminus_n;
7876 PL_minus_p = proto_perl->Iminus_p;
7877 PL_minus_l = proto_perl->Iminus_l;
7878 PL_minus_a = proto_perl->Iminus_a;
7879 PL_minus_F = proto_perl->Iminus_F;
7880 PL_doswitches = proto_perl->Idoswitches;
7881 PL_dowarn = proto_perl->Idowarn;
7882 PL_doextract = proto_perl->Idoextract;
7883 PL_sawampersand = proto_perl->Isawampersand;
7884 PL_unsafe = proto_perl->Iunsafe;
7885 PL_inplace = SAVEPV(proto_perl->Iinplace);
7886 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7887 PL_perldb = proto_perl->Iperldb;
7888 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7890 /* magical thingies */
7891 /* XXX time(&PL_basetime) when asked for? */
7892 PL_basetime = proto_perl->Ibasetime;
7893 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7895 PL_maxsysfd = proto_perl->Imaxsysfd;
7896 PL_multiline = proto_perl->Imultiline;
7897 PL_statusvalue = proto_perl->Istatusvalue;
7899 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7902 /* shortcuts to various I/O objects */
7903 PL_stdingv = gv_dup(proto_perl->Istdingv);
7904 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7905 PL_defgv = gv_dup(proto_perl->Idefgv);
7906 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7907 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7908 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7910 /* shortcuts to regexp stuff */
7911 PL_replgv = gv_dup(proto_perl->Ireplgv);
7913 /* shortcuts to misc objects */
7914 PL_errgv = gv_dup(proto_perl->Ierrgv);
7916 /* shortcuts to debugging objects */
7917 PL_DBgv = gv_dup(proto_perl->IDBgv);
7918 PL_DBline = gv_dup(proto_perl->IDBline);
7919 PL_DBsub = gv_dup(proto_perl->IDBsub);
7920 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7921 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7922 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7923 PL_lineary = av_dup(proto_perl->Ilineary);
7924 PL_dbargs = av_dup(proto_perl->Idbargs);
7927 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7928 PL_curstash = hv_dup(proto_perl->Tcurstash);
7929 PL_debstash = hv_dup(proto_perl->Idebstash);
7930 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7931 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7933 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7934 PL_endav = av_dup_inc(proto_perl->Iendav);
7935 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7936 PL_initav = av_dup_inc(proto_perl->Iinitav);
7938 PL_sub_generation = proto_perl->Isub_generation;
7940 /* funky return mechanisms */
7941 PL_forkprocess = proto_perl->Iforkprocess;
7943 /* subprocess state */
7944 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7946 /* internal state */
7947 PL_tainting = proto_perl->Itainting;
7948 PL_maxo = proto_perl->Imaxo;
7949 if (proto_perl->Iop_mask)
7950 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7952 PL_op_mask = Nullch;
7954 /* current interpreter roots */
7955 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7956 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7957 PL_main_start = proto_perl->Imain_start;
7958 PL_eval_root = proto_perl->Ieval_root;
7959 PL_eval_start = proto_perl->Ieval_start;
7961 /* runtime control stuff */
7962 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7963 PL_copline = proto_perl->Icopline;
7965 PL_filemode = proto_perl->Ifilemode;
7966 PL_lastfd = proto_perl->Ilastfd;
7967 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7970 PL_gensym = proto_perl->Igensym;
7971 PL_preambled = proto_perl->Ipreambled;
7972 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7973 PL_laststatval = proto_perl->Ilaststatval;
7974 PL_laststype = proto_perl->Ilaststype;
7975 PL_mess_sv = Nullsv;
7977 PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv);
7978 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7980 /* interpreter atexit processing */
7981 PL_exitlistlen = proto_perl->Iexitlistlen;
7982 if (PL_exitlistlen) {
7983 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7984 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7987 PL_exitlist = (PerlExitListEntry*)NULL;
7988 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7990 PL_profiledata = NULL;
7991 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7992 /* PL_rsfp_filters entries have fake IoDIRP() */
7993 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7995 PL_compcv = cv_dup(proto_perl->Icompcv);
7996 PL_comppad = av_dup(proto_perl->Icomppad);
7997 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7998 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7999 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8000 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8001 proto_perl->Tcurpad);
8003 #ifdef HAVE_INTERP_INTERN
8004 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8007 /* more statics moved here */
8008 PL_generation = proto_perl->Igeneration;
8009 PL_DBcv = cv_dup(proto_perl->IDBcv);
8011 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8012 PL_in_clean_all = proto_perl->Iin_clean_all;
8014 PL_uid = proto_perl->Iuid;
8015 PL_euid = proto_perl->Ieuid;
8016 PL_gid = proto_perl->Igid;
8017 PL_egid = proto_perl->Iegid;
8018 PL_nomemok = proto_perl->Inomemok;
8019 PL_an = proto_perl->Ian;
8020 PL_cop_seqmax = proto_perl->Icop_seqmax;
8021 PL_op_seqmax = proto_perl->Iop_seqmax;
8022 PL_evalseq = proto_perl->Ievalseq;
8023 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8024 PL_origalen = proto_perl->Iorigalen;
8025 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8026 PL_osname = SAVEPV(proto_perl->Iosname);
8027 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8028 PL_sighandlerp = proto_perl->Isighandlerp;
8031 PL_runops = proto_perl->Irunops;
8033 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8036 PL_cshlen = proto_perl->Icshlen;
8037 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8040 PL_lex_state = proto_perl->Ilex_state;
8041 PL_lex_defer = proto_perl->Ilex_defer;
8042 PL_lex_expect = proto_perl->Ilex_expect;
8043 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8044 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8045 PL_lex_starts = proto_perl->Ilex_starts;
8046 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8047 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8048 PL_lex_op = proto_perl->Ilex_op;
8049 PL_lex_inpat = proto_perl->Ilex_inpat;
8050 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8051 PL_lex_brackets = proto_perl->Ilex_brackets;
8052 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8053 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8054 PL_lex_casemods = proto_perl->Ilex_casemods;
8055 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8056 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8058 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8059 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8060 PL_nexttoke = proto_perl->Inexttoke;
8062 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8063 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8064 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8065 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8066 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8067 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8068 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8069 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8070 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8071 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8072 PL_pending_ident = proto_perl->Ipending_ident;
8073 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8075 PL_expect = proto_perl->Iexpect;
8077 PL_multi_start = proto_perl->Imulti_start;
8078 PL_multi_end = proto_perl->Imulti_end;
8079 PL_multi_open = proto_perl->Imulti_open;
8080 PL_multi_close = proto_perl->Imulti_close;
8082 PL_error_count = proto_perl->Ierror_count;
8083 PL_subline = proto_perl->Isubline;
8084 PL_subname = sv_dup_inc(proto_perl->Isubname);
8086 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8087 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8088 PL_padix = proto_perl->Ipadix;
8089 PL_padix_floor = proto_perl->Ipadix_floor;
8090 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8092 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8093 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8094 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8095 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8096 PL_last_lop_op = proto_perl->Ilast_lop_op;
8097 PL_in_my = proto_perl->Iin_my;
8098 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8100 PL_cryptseen = proto_perl->Icryptseen;
8103 PL_hints = proto_perl->Ihints;
8105 PL_amagic_generation = proto_perl->Iamagic_generation;
8107 #ifdef USE_LOCALE_COLLATE
8108 PL_collation_ix = proto_perl->Icollation_ix;
8109 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8110 PL_collation_standard = proto_perl->Icollation_standard;
8111 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8112 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8113 #endif /* USE_LOCALE_COLLATE */
8115 #ifdef USE_LOCALE_NUMERIC
8116 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8117 PL_numeric_standard = proto_perl->Inumeric_standard;
8118 PL_numeric_local = proto_perl->Inumeric_local;
8119 PL_numeric_radix = proto_perl->Inumeric_radix;
8120 #endif /* !USE_LOCALE_NUMERIC */
8122 /* utf8 character classes */
8123 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8124 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8125 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8126 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8127 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8128 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8129 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8130 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8131 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8132 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8133 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8134 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8135 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8136 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8137 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8138 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8139 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8142 PL_last_swash_hv = Nullhv; /* reinits on demand */
8143 PL_last_swash_klen = 0;
8144 PL_last_swash_key[0]= '\0';
8145 PL_last_swash_tmps = (U8*)NULL;
8146 PL_last_swash_slen = 0;
8148 /* perly.c globals */
8149 PL_yydebug = proto_perl->Iyydebug;
8150 PL_yynerrs = proto_perl->Iyynerrs;
8151 PL_yyerrflag = proto_perl->Iyyerrflag;
8152 PL_yychar = proto_perl->Iyychar;
8153 PL_yyval = proto_perl->Iyyval;
8154 PL_yylval = proto_perl->Iyylval;
8156 PL_glob_index = proto_perl->Iglob_index;
8157 PL_srand_called = proto_perl->Isrand_called;
8158 PL_uudmap['M'] = 0; /* reinits on demand */
8159 PL_bitcount = Nullch; /* reinits on demand */
8161 if (proto_perl->Ipsig_ptr) {
8162 int sig_num[] = { SIG_NUM };
8163 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8164 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8165 for (i = 1; PL_sig_name[i]; i++) {
8166 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8167 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8171 PL_psig_ptr = (SV**)NULL;
8172 PL_psig_name = (SV**)NULL;
8175 /* thrdvar.h stuff */
8178 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8179 PL_tmps_ix = proto_perl->Ttmps_ix;
8180 PL_tmps_max = proto_perl->Ttmps_max;
8181 PL_tmps_floor = proto_perl->Ttmps_floor;
8182 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8184 while (i <= PL_tmps_ix) {
8185 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8189 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8190 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8191 Newz(54, PL_markstack, i, I32);
8192 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8193 - proto_perl->Tmarkstack);
8194 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8195 - proto_perl->Tmarkstack);
8196 Copy(proto_perl->Tmarkstack, PL_markstack,
8197 PL_markstack_ptr - PL_markstack + 1, I32);
8199 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8200 * NOTE: unlike the others! */
8201 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8202 PL_scopestack_max = proto_perl->Tscopestack_max;
8203 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8204 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8206 /* next push_return() sets PL_retstack[PL_retstack_ix]
8207 * NOTE: unlike the others! */
8208 PL_retstack_ix = proto_perl->Tretstack_ix;
8209 PL_retstack_max = proto_perl->Tretstack_max;
8210 Newz(54, PL_retstack, PL_retstack_max, OP*);
8211 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8213 /* NOTE: si_dup() looks at PL_markstack */
8214 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8216 /* PL_curstack = PL_curstackinfo->si_stack; */
8217 PL_curstack = av_dup(proto_perl->Tcurstack);
8218 PL_mainstack = av_dup(proto_perl->Tmainstack);
8220 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8221 PL_stack_base = AvARRAY(PL_curstack);
8222 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8223 - proto_perl->Tstack_base);
8224 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8226 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8227 * NOTE: unlike the others! */
8228 PL_savestack_ix = proto_perl->Tsavestack_ix;
8229 PL_savestack_max = proto_perl->Tsavestack_max;
8230 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8231 PL_savestack = ss_dup(proto_perl);
8235 ENTER; /* perl_destruct() wants to LEAVE; */
8238 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8239 PL_top_env = &PL_start_env;
8241 PL_op = proto_perl->Top;
8244 PL_Xpv = (XPV*)NULL;
8245 PL_na = proto_perl->Tna;
8247 PL_statbuf = proto_perl->Tstatbuf;
8248 PL_statcache = proto_perl->Tstatcache;
8249 PL_statgv = gv_dup(proto_perl->Tstatgv);
8250 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8252 PL_timesbuf = proto_perl->Ttimesbuf;
8255 PL_tainted = proto_perl->Ttainted;
8256 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8257 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8258 PL_rs = sv_dup_inc(proto_perl->Trs);
8259 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8260 PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv);
8261 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8262 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8263 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8264 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8265 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8267 PL_restartop = proto_perl->Trestartop;
8268 PL_in_eval = proto_perl->Tin_eval;
8269 PL_delaymagic = proto_perl->Tdelaymagic;
8270 PL_dirty = proto_perl->Tdirty;
8271 PL_localizing = proto_perl->Tlocalizing;
8273 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8274 PL_protect = proto_perl->Tprotect;
8276 PL_errors = sv_dup_inc(proto_perl->Terrors);
8277 PL_av_fetch_sv = Nullsv;
8278 PL_hv_fetch_sv = Nullsv;
8279 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8280 PL_modcount = proto_perl->Tmodcount;
8281 PL_lastgotoprobe = Nullop;
8282 PL_dumpindent = proto_perl->Tdumpindent;
8284 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8285 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8286 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8287 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8288 PL_sortcxix = proto_perl->Tsortcxix;
8289 PL_efloatbuf = Nullch; /* reinits on demand */
8290 PL_efloatsize = 0; /* reinits on demand */
8294 PL_screamfirst = NULL;
8295 PL_screamnext = NULL;
8296 PL_maxscream = -1; /* reinits on demand */
8297 PL_lastscream = Nullsv;
8299 PL_watchaddr = NULL;
8300 PL_watchok = Nullch;
8302 PL_regdummy = proto_perl->Tregdummy;
8303 PL_regcomp_parse = Nullch;
8304 PL_regxend = Nullch;
8305 PL_regcode = (regnode*)NULL;
8308 PL_regprecomp = Nullch;
8313 PL_seen_zerolen = 0;
8315 PL_regcomp_rx = (regexp*)NULL;
8317 PL_colorset = 0; /* reinits PL_colors[] */
8318 /*PL_colors[6] = {0,0,0,0,0,0};*/
8319 PL_reg_whilem_seen = 0;
8320 PL_reginput = Nullch;
8323 PL_regstartp = (I32*)NULL;
8324 PL_regendp = (I32*)NULL;
8325 PL_reglastparen = (U32*)NULL;
8326 PL_regtill = Nullch;
8328 PL_reg_start_tmp = (char**)NULL;
8329 PL_reg_start_tmpl = 0;
8330 PL_regdata = (struct reg_data*)NULL;
8333 PL_reg_eval_set = 0;
8335 PL_regprogram = (regnode*)NULL;
8337 PL_regcc = (CURCUR*)NULL;
8338 PL_reg_call_cc = (struct re_cc_state*)NULL;
8339 PL_reg_re = (regexp*)NULL;
8340 PL_reg_ganch = Nullch;
8342 PL_reg_magic = (MAGIC*)NULL;
8344 PL_reg_oldcurpm = (PMOP*)NULL;
8345 PL_reg_curpm = (PMOP*)NULL;
8346 PL_reg_oldsaved = Nullch;
8347 PL_reg_oldsavedlen = 0;
8349 PL_reg_leftiter = 0;
8350 PL_reg_poscache = Nullch;
8351 PL_reg_poscache_size= 0;
8353 /* RE engine - function pointers */
8354 PL_regcompp = proto_perl->Tregcompp;
8355 PL_regexecp = proto_perl->Tregexecp;
8356 PL_regint_start = proto_perl->Tregint_start;
8357 PL_regint_string = proto_perl->Tregint_string;
8358 PL_regfree = proto_perl->Tregfree;
8360 PL_reginterp_cnt = 0;
8361 PL_reg_starttry = 0;
8364 return (PerlInterpreter*)pPerl;
8370 #else /* !USE_ITHREADS */
8376 #endif /* USE_ITHREADS */
8379 do_report_used(pTHXo_ SV *sv)
8381 if (SvTYPE(sv) != SVTYPEMASK) {
8382 PerlIO_printf(Perl_debug_log, "****\n");
8388 do_clean_objs(pTHXo_ SV *sv)
8392 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8393 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8394 if (SvWEAKREF(sv)) {
8405 /* XXX Might want to check arrays, etc. */
8408 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8410 do_clean_named_objs(pTHXo_ SV *sv)
8412 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8413 if ( SvOBJECT(GvSV(sv)) ||
8414 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8415 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8416 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8417 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8419 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8427 do_clean_all(pTHXo_ SV *sv)
8429 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8430 SvFLAGS(sv) |= SVf_BREAK;