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) && SvFAKE(sv)) {
1624 sv_force_normal(sv);
1626 if (SvREADONLY(sv) && !SvOK(sv)) {
1627 if (ckWARN(WARN_UNINITIALIZED))
1637 return (UV)SvIVX(sv);
1641 /* We can cache the IV/UV value even if it not good enough
1642 * to reconstruct NV, since the conversion to PV will prefer
1645 if (SvTYPE(sv) == SVt_NV)
1646 sv_upgrade(sv, SVt_PVNV);
1648 if (SvNVX(sv) >= -0.5) {
1650 SvUVX(sv) = U_V(SvNVX(sv));
1653 SvIVX(sv) = I_V(SvNVX(sv));
1655 DEBUG_c(PerlIO_printf(Perl_debug_log,
1656 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1659 (IV)(UV)SvIVX(sv)));
1660 return (UV)SvIVX(sv);
1663 else if (SvPOKp(sv) && SvLEN(sv)) {
1664 I32 numtype = looks_like_number(sv);
1666 /* We want to avoid a possible problem when we cache a UV which
1667 may be later translated to an NV, and the resulting NV is not
1668 the translation of the initial data.
1670 This means that if we cache such a UV, we need to cache the
1671 NV as well. Moreover, we trade speed for space, and do not
1672 cache the NV if not needed.
1674 if (numtype & IS_NUMBER_NOT_IV) {
1675 /* May be not an integer. Need to cache NV if we cache IV
1676 * - otherwise future conversion to NV will be wrong. */
1679 d = Atof(SvPVX(sv));
1681 if (SvTYPE(sv) < SVt_PVNV)
1682 sv_upgrade(sv, SVt_PVNV);
1686 #if defined(USE_LONG_DOUBLE)
1687 DEBUG_c(PerlIO_printf(Perl_debug_log,
1688 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1689 PTR2UV(sv), SvNVX(sv)));
1691 DEBUG_c(PerlIO_printf(Perl_debug_log,
1692 "0x%"UVxf" 2nv(%g)\n",
1693 PTR2UV(sv), SvNVX(sv)));
1695 if (SvNVX(sv) < -0.5) {
1696 SvIVX(sv) = I_V(SvNVX(sv));
1699 SvUVX(sv) = U_V(SvNVX(sv));
1703 else if (numtype & IS_NUMBER_NEG) {
1704 /* The NV may be reconstructed from IV - safe to cache IV,
1705 which may be calculated by atol(). */
1706 if (SvTYPE(sv) == SVt_PV)
1707 sv_upgrade(sv, SVt_PVIV);
1709 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1711 else if (numtype) { /* Non-negative */
1712 /* The NV may be reconstructed from UV - safe to cache UV,
1713 which may be calculated by strtoul()/atol. */
1714 if (SvTYPE(sv) == SVt_PV)
1715 sv_upgrade(sv, SVt_PVIV);
1717 (void)SvIsUV_on(sv);
1719 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1720 #else /* no atou(), but we know the number fits into IV... */
1721 /* The only problem may be if it is negative... */
1722 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1725 else { /* Not a number. Cache 0. */
1726 if (SvTYPE(sv) < SVt_PVIV)
1727 sv_upgrade(sv, SVt_PVIV);
1729 (void)SvIsUV_on(sv);
1730 SvUVX(sv) = 0; /* We assume that 0s have the
1731 same bitmap in IV and UV. */
1732 if (ckWARN(WARN_NUMERIC))
1737 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1738 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1741 if (SvTYPE(sv) < SVt_IV)
1742 /* Typically the caller expects that sv_any is not NULL now. */
1743 sv_upgrade(sv, SVt_IV);
1747 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1748 PTR2UV(sv),SvUVX(sv)));
1749 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1753 Perl_sv_2nv(pTHX_ register SV *sv)
1757 if (SvGMAGICAL(sv)) {
1761 if (SvPOKp(sv) && SvLEN(sv)) {
1762 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1764 return Atof(SvPVX(sv));
1768 return (NV)SvUVX(sv);
1770 return (NV)SvIVX(sv);
1773 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1774 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1780 if (SvTHINKFIRST(sv)) {
1783 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1784 (SvRV(tmpstr) != SvRV(sv)))
1785 return SvNV(tmpstr);
1786 return PTR2NV(SvRV(sv));
1788 if (SvREADONLY(sv) && SvFAKE(sv)) {
1789 sv_force_normal(sv);
1791 if (SvREADONLY(sv) && !SvOK(sv)) {
1792 if (ckWARN(WARN_UNINITIALIZED))
1797 if (SvTYPE(sv) < SVt_NV) {
1798 if (SvTYPE(sv) == SVt_IV)
1799 sv_upgrade(sv, SVt_PVNV);
1801 sv_upgrade(sv, SVt_NV);
1802 #if defined(USE_LONG_DOUBLE)
1804 STORE_NUMERIC_LOCAL_SET_STANDARD();
1805 PerlIO_printf(Perl_debug_log,
1806 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1807 PTR2UV(sv), SvNVX(sv));
1808 RESTORE_NUMERIC_LOCAL();
1812 STORE_NUMERIC_LOCAL_SET_STANDARD();
1813 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1814 PTR2UV(sv), SvNVX(sv));
1815 RESTORE_NUMERIC_LOCAL();
1819 else if (SvTYPE(sv) < SVt_PVNV)
1820 sv_upgrade(sv, SVt_PVNV);
1822 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1824 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1826 else if (SvPOKp(sv) && SvLEN(sv)) {
1827 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1829 SvNVX(sv) = Atof(SvPVX(sv));
1832 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1834 if (SvTYPE(sv) < SVt_NV)
1835 /* Typically the caller expects that sv_any is not NULL now. */
1836 sv_upgrade(sv, SVt_NV);
1840 #if defined(USE_LONG_DOUBLE)
1842 STORE_NUMERIC_LOCAL_SET_STANDARD();
1843 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1844 PTR2UV(sv), SvNVX(sv));
1845 RESTORE_NUMERIC_LOCAL();
1849 STORE_NUMERIC_LOCAL_SET_STANDARD();
1850 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1851 PTR2UV(sv), SvNVX(sv));
1852 RESTORE_NUMERIC_LOCAL();
1859 S_asIV(pTHX_ SV *sv)
1861 I32 numtype = looks_like_number(sv);
1864 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1865 return Atol(SvPVX(sv));
1867 if (ckWARN(WARN_NUMERIC))
1870 d = Atof(SvPVX(sv));
1875 S_asUV(pTHX_ SV *sv)
1877 I32 numtype = looks_like_number(sv);
1880 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1881 return Strtoul(SvPVX(sv), Null(char**), 10);
1884 if (ckWARN(WARN_NUMERIC))
1887 return U_V(Atof(SvPVX(sv)));
1891 * Returns a combination of (advisory only - can get false negatives)
1892 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1894 * 0 if does not look like number.
1896 * In fact possible values are 0 and
1897 * IS_NUMBER_TO_INT_BY_ATOL 123
1898 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1899 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1900 * IS_NUMBER_INFINITY
1901 * with a possible addition of IS_NUMBER_NEG.
1905 =for apidoc looks_like_number
1907 Test if an the content of an SV looks like a number (or is a
1914 Perl_looks_like_number(pTHX_ SV *sv)
1917 register char *send;
1918 register char *sbegin;
1919 register char *nbegin;
1928 else if (SvPOKp(sv))
1929 sbegin = SvPV(sv, len);
1932 send = sbegin + len;
1939 numtype = IS_NUMBER_NEG;
1946 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1947 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1951 /* next must be digit or the radix separator or beginning of infinity */
1955 } while (isDIGIT(*s));
1957 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1958 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1960 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1963 #ifdef USE_LOCALE_NUMERIC
1964 || IS_NUMERIC_RADIX(*s)
1968 numtype |= IS_NUMBER_NOT_IV;
1969 while (isDIGIT(*s)) /* optional digits after the radix */
1974 #ifdef USE_LOCALE_NUMERIC
1975 || IS_NUMERIC_RADIX(*s)
1979 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1980 /* no digits before the radix means we need digits after it */
1984 } while (isDIGIT(*s));
1989 else if (*s == 'I' || *s == 'i') {
1990 s++; if (*s != 'N' && *s != 'n') return 0;
1991 s++; if (*s != 'F' && *s != 'f') return 0;
1992 s++; if (*s == 'I' || *s == 'i') {
1993 s++; if (*s != 'N' && *s != 'n') return 0;
1994 s++; if (*s != 'I' && *s != 'i') return 0;
1995 s++; if (*s != 'T' && *s != 't') return 0;
1996 s++; if (*s != 'Y' && *s != 'y') return 0;
2005 numtype = IS_NUMBER_INFINITY;
2007 /* we can have an optional exponent part */
2008 if (*s == 'e' || *s == 'E') {
2009 numtype &= ~IS_NUMBER_NEG;
2010 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2012 if (*s == '+' || *s == '-')
2017 } while (isDIGIT(*s));
2027 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2028 return IS_NUMBER_TO_INT_BY_ATOL;
2033 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2036 return sv_2pv(sv, &n_a);
2039 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2041 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2043 char *ptr = buf + TYPE_CHARS(UV);
2057 *--ptr = '0' + (uv % 10);
2066 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2071 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2072 char *tmpbuf = tbuf;
2078 if (SvGMAGICAL(sv)) {
2086 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2088 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2093 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2098 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2099 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2106 if (SvTHINKFIRST(sv)) {
2109 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2110 (SvRV(tmpstr) != SvRV(sv)))
2111 return SvPV(tmpstr,*lp);
2118 switch (SvTYPE(sv)) {
2120 if ( ((SvFLAGS(sv) &
2121 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2122 == (SVs_OBJECT|SVs_RMG))
2123 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2124 && (mg = mg_find(sv, 'r'))) {
2125 regexp *re = (regexp *)mg->mg_obj;
2128 char *fptr = "msix";
2133 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2135 while((ch = *fptr++)) {
2137 reflags[left++] = ch;
2140 reflags[right--] = ch;
2145 reflags[left] = '-';
2149 mg->mg_len = re->prelen + 4 + left;
2150 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2151 Copy("(?", mg->mg_ptr, 2, char);
2152 Copy(reflags, mg->mg_ptr+2, left, char);
2153 Copy(":", mg->mg_ptr+left+2, 1, char);
2154 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2155 mg->mg_ptr[mg->mg_len - 1] = ')';
2156 mg->mg_ptr[mg->mg_len] = 0;
2158 PL_reginterp_cnt += re->program[0].next_off;
2170 case SVt_PVBM: if (SvROK(sv))
2173 s = "SCALAR"; break;
2174 case SVt_PVLV: s = "LVALUE"; break;
2175 case SVt_PVAV: s = "ARRAY"; break;
2176 case SVt_PVHV: s = "HASH"; break;
2177 case SVt_PVCV: s = "CODE"; break;
2178 case SVt_PVGV: s = "GLOB"; break;
2179 case SVt_PVFM: s = "FORMAT"; break;
2180 case SVt_PVIO: s = "IO"; break;
2181 default: s = "UNKNOWN"; break;
2185 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2188 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2194 if (SvREADONLY(sv) && !SvOK(sv)) {
2195 if (ckWARN(WARN_UNINITIALIZED))
2205 else if (SvNOKp(sv)) { /* See note in sv_2uv() */
2206 /* XXXX 64-bit? IV may have better precision... */
2207 /* I tried changing this to be 64-bit-aware and
2208 * the t/op/numconvert.t became very, very, angry.
2210 if (SvTYPE(sv) < SVt_PVNV)
2211 sv_upgrade(sv, SVt_PVNV);
2212 /* The +20 is pure guesswork. Configure test needed. --jhi */
2213 SvGROW(sv, NV_DIG + 20);
2215 olderrno = errno; /* some Xenix systems wipe out errno here */
2217 if (SvNVX(sv) == 0.0)
2218 (void)strcpy(s,"0");
2222 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2225 #ifdef FIXNEGATIVEZERO
2226 if (*s == '-' && s[1] == '0' && !s[2])
2235 else if (SvIOKp(sv)) {
2236 U32 isIOK = SvIOK(sv);
2237 U32 isUIOK = SvIsUV(sv);
2238 char buf[TYPE_CHARS(UV)];
2241 if (SvTYPE(sv) < SVt_PVIV)
2242 sv_upgrade(sv, SVt_PVIV);
2244 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2246 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2247 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2248 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2249 SvCUR_set(sv, ebuf - ptr);
2261 if (ckWARN(WARN_UNINITIALIZED)
2262 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2265 if (SvTYPE(sv) < SVt_PV)
2266 /* Typically the caller expects that sv_any is not NULL now. */
2267 sv_upgrade(sv, SVt_PV);
2270 *lp = s - SvPVX(sv);
2273 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2274 PTR2UV(sv),SvPVX(sv)));
2278 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2279 /* Sneaky stuff here */
2283 tsv = newSVpv(tmpbuf, 0);
2299 len = strlen(tmpbuf);
2301 #ifdef FIXNEGATIVEZERO
2302 if (len == 2 && t[0] == '-' && t[1] == '0') {
2307 (void)SvUPGRADE(sv, SVt_PV);
2309 s = SvGROW(sv, len + 1);
2318 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2321 return sv_2pvbyte(sv, &n_a);
2325 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2327 return sv_2pv(sv,lp);
2331 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2334 return sv_2pvutf8(sv, &n_a);
2338 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2340 sv_utf8_upgrade(sv);
2341 return SvPV(sv,*lp);
2344 /* This function is only called on magical items */
2346 Perl_sv_2bool(pTHX_ register SV *sv)
2355 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2356 (SvRV(tmpsv) != SvRV(sv)))
2357 return SvTRUE(tmpsv);
2358 return SvRV(sv) != 0;
2361 register XPV* Xpvtmp;
2362 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2363 (*Xpvtmp->xpv_pv > '0' ||
2364 Xpvtmp->xpv_cur > 1 ||
2365 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2372 return SvIVX(sv) != 0;
2375 return SvNVX(sv) != 0.0;
2383 =for apidoc sv_utf8_upgrade
2385 Convert the PV of an SV to its UTF8-encoded form.
2391 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2396 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2399 /* This function could be much more efficient if we had a FLAG in SVs
2400 * to signal if there are any hibit chars in the PV.
2401 * Given that there isn't make loop fast as possible
2407 if ((hibit = *t++ & 0x80))
2413 if (SvREADONLY(sv) && SvFAKE(sv)) {
2414 sv_force_normal(sv);
2417 len = SvCUR(sv) + 1; /* Plus the \0 */
2418 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2419 SvCUR(sv) = len - 1;
2421 Safefree(s); /* No longer using what was there before. */
2422 SvLEN(sv) = len; /* No longer know the real size. */
2428 =for apidoc sv_utf8_downgrade
2430 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2431 This may not be possible if the PV contains non-byte encoding characters;
2432 if this is the case, either returns false or, if C<fail_ok> is not
2439 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2441 if (SvPOK(sv) && SvUTF8(sv)) {
2443 char *c = SvPVX(sv);
2444 STRLEN len = SvCUR(sv);
2446 if (!utf8_to_bytes((U8*)c, &len)) {
2451 Perl_croak(aTHX_ "Wide character in %s",
2452 PL_op_desc[PL_op->op_type]);
2454 Perl_croak(aTHX_ "Wide character");
2466 =for apidoc sv_utf8_encode
2468 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2469 flag so that it looks like bytes again. Nothing calls this.
2475 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2477 sv_utf8_upgrade(sv);
2482 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2487 bool has_utf = FALSE;
2488 if (!sv_utf8_downgrade(sv, TRUE))
2491 /* it is actually just a matter of turning the utf8 flag on, but
2492 * we want to make sure everything inside is valid utf8 first.
2495 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2509 /* Note: sv_setsv() should not be called with a source string that needs
2510 * to be reused, since it may destroy the source string if it is marked
2515 =for apidoc sv_setsv
2517 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2518 The source SV may be destroyed if it is mortal. Does not handle 'set'
2519 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2526 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2528 register U32 sflags;
2534 SV_CHECK_THINKFIRST(dstr);
2536 sstr = &PL_sv_undef;
2537 stype = SvTYPE(sstr);
2538 dtype = SvTYPE(dstr);
2542 /* There's a lot of redundancy below but we're going for speed here */
2547 if (dtype != SVt_PVGV) {
2548 (void)SvOK_off(dstr);
2556 sv_upgrade(dstr, SVt_IV);
2559 sv_upgrade(dstr, SVt_PVNV);
2563 sv_upgrade(dstr, SVt_PVIV);
2566 (void)SvIOK_only(dstr);
2567 SvIVX(dstr) = SvIVX(sstr);
2570 if (SvTAINTED(sstr))
2581 sv_upgrade(dstr, SVt_NV);
2586 sv_upgrade(dstr, SVt_PVNV);
2589 SvNVX(dstr) = SvNVX(sstr);
2590 (void)SvNOK_only(dstr);
2591 if (SvTAINTED(sstr))
2599 sv_upgrade(dstr, SVt_RV);
2600 else if (dtype == SVt_PVGV &&
2601 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2604 if (GvIMPORTED(dstr) != GVf_IMPORTED
2605 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2607 GvIMPORTED_on(dstr);
2618 sv_upgrade(dstr, SVt_PV);
2621 if (dtype < SVt_PVIV)
2622 sv_upgrade(dstr, SVt_PVIV);
2625 if (dtype < SVt_PVNV)
2626 sv_upgrade(dstr, SVt_PVNV);
2633 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2634 PL_op_name[PL_op->op_type]);
2636 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2640 if (dtype <= SVt_PVGV) {
2642 if (dtype != SVt_PVGV) {
2643 char *name = GvNAME(sstr);
2644 STRLEN len = GvNAMELEN(sstr);
2645 sv_upgrade(dstr, SVt_PVGV);
2646 sv_magic(dstr, dstr, '*', Nullch, 0);
2647 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2648 GvNAME(dstr) = savepvn(name, len);
2649 GvNAMELEN(dstr) = len;
2650 SvFAKE_on(dstr); /* can coerce to non-glob */
2652 /* ahem, death to those who redefine active sort subs */
2653 else if (PL_curstackinfo->si_type == PERLSI_SORT
2654 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2655 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2657 (void)SvOK_off(dstr);
2658 GvINTRO_off(dstr); /* one-shot flag */
2660 GvGP(dstr) = gp_ref(GvGP(sstr));
2661 if (SvTAINTED(sstr))
2663 if (GvIMPORTED(dstr) != GVf_IMPORTED
2664 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2666 GvIMPORTED_on(dstr);
2674 if (SvGMAGICAL(sstr)) {
2676 if (SvTYPE(sstr) != stype) {
2677 stype = SvTYPE(sstr);
2678 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2682 if (stype == SVt_PVLV)
2683 (void)SvUPGRADE(dstr, SVt_PVNV);
2685 (void)SvUPGRADE(dstr, stype);
2688 sflags = SvFLAGS(sstr);
2690 if (sflags & SVf_ROK) {
2691 if (dtype >= SVt_PV) {
2692 if (dtype == SVt_PVGV) {
2693 SV *sref = SvREFCNT_inc(SvRV(sstr));
2695 int intro = GvINTRO(dstr);
2700 GvINTRO_off(dstr); /* one-shot flag */
2701 Newz(602,gp, 1, GP);
2702 GvGP(dstr) = gp_ref(gp);
2703 GvSV(dstr) = NEWSV(72,0);
2704 GvLINE(dstr) = CopLINE(PL_curcop);
2705 GvEGV(dstr) = (GV*)dstr;
2708 switch (SvTYPE(sref)) {
2711 SAVESPTR(GvAV(dstr));
2713 dref = (SV*)GvAV(dstr);
2714 GvAV(dstr) = (AV*)sref;
2715 if (!GvIMPORTED_AV(dstr)
2716 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2718 GvIMPORTED_AV_on(dstr);
2723 SAVESPTR(GvHV(dstr));
2725 dref = (SV*)GvHV(dstr);
2726 GvHV(dstr) = (HV*)sref;
2727 if (!GvIMPORTED_HV(dstr)
2728 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2730 GvIMPORTED_HV_on(dstr);
2735 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2736 SvREFCNT_dec(GvCV(dstr));
2737 GvCV(dstr) = Nullcv;
2738 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2739 PL_sub_generation++;
2741 SAVESPTR(GvCV(dstr));
2744 dref = (SV*)GvCV(dstr);
2745 if (GvCV(dstr) != (CV*)sref) {
2746 CV* cv = GvCV(dstr);
2748 if (!GvCVGEN((GV*)dstr) &&
2749 (CvROOT(cv) || CvXSUB(cv)))
2752 /* ahem, death to those who redefine
2753 * active sort subs */
2754 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2755 PL_sortcop == CvSTART(cv))
2757 "Can't redefine active sort subroutine %s",
2758 GvENAME((GV*)dstr));
2759 /* Redefining a sub - warning is mandatory if
2760 it was a const and its value changed. */
2761 if (ckWARN(WARN_REDEFINE)
2763 && (!CvCONST((CV*)sref)
2764 || sv_cmp(cv_const_sv(cv),
2765 cv_const_sv((CV*)sref)))))
2767 Perl_warner(aTHX_ WARN_REDEFINE,
2769 ? "Constant subroutine %s redefined"
2770 : "Subroutine %s redefined",
2771 GvENAME((GV*)dstr));
2774 cv_ckproto(cv, (GV*)dstr,
2775 SvPOK(sref) ? SvPVX(sref) : Nullch);
2777 GvCV(dstr) = (CV*)sref;
2778 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2779 GvASSUMECV_on(dstr);
2780 PL_sub_generation++;
2782 if (!GvIMPORTED_CV(dstr)
2783 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2785 GvIMPORTED_CV_on(dstr);
2790 SAVESPTR(GvIOp(dstr));
2792 dref = (SV*)GvIOp(dstr);
2793 GvIOp(dstr) = (IO*)sref;
2797 SAVESPTR(GvFORM(dstr));
2799 dref = (SV*)GvFORM(dstr);
2800 GvFORM(dstr) = (CV*)sref;
2804 SAVESPTR(GvSV(dstr));
2806 dref = (SV*)GvSV(dstr);
2808 if (!GvIMPORTED_SV(dstr)
2809 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2811 GvIMPORTED_SV_on(dstr);
2819 if (SvTAINTED(sstr))
2824 (void)SvOOK_off(dstr); /* backoff */
2826 Safefree(SvPVX(dstr));
2827 SvLEN(dstr)=SvCUR(dstr)=0;
2830 (void)SvOK_off(dstr);
2831 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2833 if (sflags & SVp_NOK) {
2835 SvNVX(dstr) = SvNVX(sstr);
2837 if (sflags & SVp_IOK) {
2838 (void)SvIOK_on(dstr);
2839 SvIVX(dstr) = SvIVX(sstr);
2840 if (sflags & SVf_IVisUV)
2843 if (SvAMAGIC(sstr)) {
2847 else if (sflags & SVp_POK) {
2850 * Check to see if we can just swipe the string. If so, it's a
2851 * possible small lose on short strings, but a big win on long ones.
2852 * It might even be a win on short strings if SvPVX(dstr)
2853 * has to be allocated and SvPVX(sstr) has to be freed.
2856 if (SvTEMP(sstr) && /* slated for free anyway? */
2857 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2858 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2859 SvLEN(sstr) && /* and really is a string */
2860 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
2862 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2864 SvFLAGS(dstr) &= ~SVf_OOK;
2865 Safefree(SvPVX(dstr) - SvIVX(dstr));
2867 else if (SvLEN(dstr))
2868 Safefree(SvPVX(dstr));
2870 (void)SvPOK_only(dstr);
2871 SvPV_set(dstr, SvPVX(sstr));
2872 SvLEN_set(dstr, SvLEN(sstr));
2873 SvCUR_set(dstr, SvCUR(sstr));
2876 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2877 SvPV_set(sstr, Nullch);
2882 else { /* have to copy actual string */
2883 STRLEN len = SvCUR(sstr);
2885 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2886 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2887 SvCUR_set(dstr, len);
2888 *SvEND(dstr) = '\0';
2889 (void)SvPOK_only(dstr);
2891 if ((sflags & SVf_UTF8) && !IN_BYTE)
2894 if (sflags & SVp_NOK) {
2896 SvNVX(dstr) = SvNVX(sstr);
2898 if (sflags & SVp_IOK) {
2899 (void)SvIOK_on(dstr);
2900 SvIVX(dstr) = SvIVX(sstr);
2901 if (sflags & SVf_IVisUV)
2905 else if (sflags & SVp_NOK) {
2906 SvNVX(dstr) = SvNVX(sstr);
2907 (void)SvNOK_only(dstr);
2908 if (sflags & SVf_IOK) {
2909 (void)SvIOK_on(dstr);
2910 SvIVX(dstr) = SvIVX(sstr);
2911 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2912 if (sflags & SVf_IVisUV)
2916 else if (sflags & SVp_IOK) {
2917 (void)SvIOK_only(dstr);
2918 SvIVX(dstr) = SvIVX(sstr);
2919 if (sflags & SVf_IVisUV)
2923 if (dtype == SVt_PVGV) {
2924 if (ckWARN(WARN_MISC))
2925 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2928 (void)SvOK_off(dstr);
2930 if (SvTAINTED(sstr))
2935 =for apidoc sv_setsv_mg
2937 Like C<sv_setsv>, but also handles 'set' magic.
2943 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2945 sv_setsv(dstr,sstr);
2950 =for apidoc sv_setpvn
2952 Copies a string into an SV. The C<len> parameter indicates the number of
2953 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2959 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2961 register char *dptr;
2963 /* len is STRLEN which is unsigned, need to copy to signed */
2967 SV_CHECK_THINKFIRST(sv);
2972 (void)SvUPGRADE(sv, SVt_PV);
2974 SvGROW(sv, len + 1);
2976 Move(ptr,dptr,len,char);
2979 (void)SvPOK_only(sv); /* validate pointer */
2984 =for apidoc sv_setpvn_mg
2986 Like C<sv_setpvn>, but also handles 'set' magic.
2992 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2994 sv_setpvn(sv,ptr,len);
2999 =for apidoc sv_setpv
3001 Copies a string into an SV. The string must be null-terminated. Does not
3002 handle 'set' magic. See C<sv_setpv_mg>.
3008 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3010 register STRLEN len;
3012 SV_CHECK_THINKFIRST(sv);
3018 (void)SvUPGRADE(sv, SVt_PV);
3020 SvGROW(sv, len + 1);
3021 Move(ptr,SvPVX(sv),len+1,char);
3023 (void)SvPOK_only(sv); /* validate pointer */
3028 =for apidoc sv_setpv_mg
3030 Like C<sv_setpv>, but also handles 'set' magic.
3036 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3043 =for apidoc sv_usepvn
3045 Tells an SV to use C<ptr> to find its string value. Normally the string is
3046 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3047 The C<ptr> should point to memory that was allocated by C<malloc>. The
3048 string length, C<len>, must be supplied. This function will realloc the
3049 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3050 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3051 See C<sv_usepvn_mg>.
3057 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3059 SV_CHECK_THINKFIRST(sv);
3060 (void)SvUPGRADE(sv, SVt_PV);
3065 (void)SvOOK_off(sv);
3066 if (SvPVX(sv) && SvLEN(sv))
3067 Safefree(SvPVX(sv));
3068 Renew(ptr, len+1, char);
3071 SvLEN_set(sv, len+1);
3073 (void)SvPOK_only(sv); /* validate pointer */
3078 =for apidoc sv_usepvn_mg
3080 Like C<sv_usepvn>, but also handles 'set' magic.
3086 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3088 sv_usepvn(sv,ptr,len);
3093 Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags)
3095 if (SvREADONLY(sv)) {
3097 char *pvx = SvPVX(sv);
3098 STRLEN len = SvCUR(sv);
3099 U32 hash = SvUVX(sv);
3100 SvGROW(sv, len + 1);
3101 Move(pvx,SvPVX(sv),len,char);
3105 unsharepvn(pvx,SvUTF8(sv)?-len:len,hash);
3107 else if (PL_curcop != &PL_compiling)
3108 Perl_croak(aTHX_ PL_no_modify);
3111 sv_unref_flags(sv, flags);
3112 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3117 Perl_sv_force_normal(pTHX_ register SV *sv)
3119 sv_force_normal_flags(sv, 0);
3125 Efficient removal of characters from the beginning of the string buffer.
3126 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3127 the string buffer. The C<ptr> becomes the first character of the adjusted
3134 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3138 register STRLEN delta;
3140 if (!ptr || !SvPOKp(sv))
3142 SV_CHECK_THINKFIRST(sv);
3143 if (SvTYPE(sv) < SVt_PVIV)
3144 sv_upgrade(sv,SVt_PVIV);
3147 if (!SvLEN(sv)) { /* make copy of shared string */
3148 char *pvx = SvPVX(sv);
3149 STRLEN len = SvCUR(sv);
3150 SvGROW(sv, len + 1);
3151 Move(pvx,SvPVX(sv),len,char);
3155 SvFLAGS(sv) |= SVf_OOK;
3157 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3158 delta = ptr - SvPVX(sv);
3166 =for apidoc sv_catpvn
3168 Concatenates the string onto the end of the string which is in the SV. The
3169 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3170 'set' magic. See C<sv_catpvn_mg>.
3176 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3181 junk = SvPV_force(sv, tlen);
3182 SvGROW(sv, tlen + len + 1);
3185 Move(ptr,SvPVX(sv)+tlen,len,char);
3188 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3193 =for apidoc sv_catpvn_mg
3195 Like C<sv_catpvn>, but also handles 'set' magic.
3201 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3203 sv_catpvn(sv,ptr,len);
3208 =for apidoc sv_catsv
3210 Concatenates the string from SV C<ssv> onto the end of the string in SV
3211 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3217 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3223 if ((s = SvPV(sstr, len))) {
3224 if (DO_UTF8(sstr)) {
3225 sv_utf8_upgrade(dstr);
3226 sv_catpvn(dstr,s,len);
3230 sv_catpvn(dstr,s,len);
3235 =for apidoc sv_catsv_mg
3237 Like C<sv_catsv>, but also handles 'set' magic.
3243 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3245 sv_catsv(dstr,sstr);
3250 =for apidoc sv_catpv
3252 Concatenates the string onto the end of the string which is in the SV.
3253 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3259 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3261 register STRLEN len;
3267 junk = SvPV_force(sv, tlen);
3269 SvGROW(sv, tlen + len + 1);
3272 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3274 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3279 =for apidoc sv_catpv_mg
3281 Like C<sv_catpv>, but also handles 'set' magic.
3287 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3294 Perl_newSV(pTHX_ STRLEN len)
3300 sv_upgrade(sv, SVt_PV);
3301 SvGROW(sv, len + 1);
3306 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3309 =for apidoc sv_magic
3311 Adds magic to an SV.
3317 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3321 if (SvREADONLY(sv)) {
3322 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3323 Perl_croak(aTHX_ PL_no_modify);
3325 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3326 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3333 (void)SvUPGRADE(sv, SVt_PVMG);
3335 Newz(702,mg, 1, MAGIC);
3336 mg->mg_moremagic = SvMAGIC(sv);
3339 if (!obj || obj == sv || how == '#' || how == 'r')
3342 mg->mg_obj = SvREFCNT_inc(obj);
3343 mg->mg_flags |= MGf_REFCOUNTED;
3346 mg->mg_len = namlen;
3349 mg->mg_ptr = savepvn(name, namlen);
3350 else if (namlen == HEf_SVKEY)
3351 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3355 mg->mg_virtual = &PL_vtbl_sv;
3358 mg->mg_virtual = &PL_vtbl_amagic;
3361 mg->mg_virtual = &PL_vtbl_amagicelem;
3367 mg->mg_virtual = &PL_vtbl_bm;
3370 mg->mg_virtual = &PL_vtbl_regdata;
3373 mg->mg_virtual = &PL_vtbl_regdatum;
3376 mg->mg_virtual = &PL_vtbl_env;
3379 mg->mg_virtual = &PL_vtbl_fm;
3382 mg->mg_virtual = &PL_vtbl_envelem;
3385 mg->mg_virtual = &PL_vtbl_mglob;
3388 mg->mg_virtual = &PL_vtbl_isa;
3391 mg->mg_virtual = &PL_vtbl_isaelem;
3394 mg->mg_virtual = &PL_vtbl_nkeys;
3401 mg->mg_virtual = &PL_vtbl_dbline;
3405 mg->mg_virtual = &PL_vtbl_mutex;
3407 #endif /* USE_THREADS */
3408 #ifdef USE_LOCALE_COLLATE
3410 mg->mg_virtual = &PL_vtbl_collxfrm;
3412 #endif /* USE_LOCALE_COLLATE */
3414 mg->mg_virtual = &PL_vtbl_pack;
3418 mg->mg_virtual = &PL_vtbl_packelem;
3421 mg->mg_virtual = &PL_vtbl_regexp;
3424 mg->mg_virtual = &PL_vtbl_sig;
3427 mg->mg_virtual = &PL_vtbl_sigelem;
3430 mg->mg_virtual = &PL_vtbl_taint;
3434 mg->mg_virtual = &PL_vtbl_uvar;
3437 mg->mg_virtual = &PL_vtbl_vec;
3440 mg->mg_virtual = &PL_vtbl_substr;
3443 mg->mg_virtual = &PL_vtbl_defelem;
3446 mg->mg_virtual = &PL_vtbl_glob;
3449 mg->mg_virtual = &PL_vtbl_arylen;
3452 mg->mg_virtual = &PL_vtbl_pos;
3455 mg->mg_virtual = &PL_vtbl_backref;
3457 case '~': /* Reserved for use by extensions not perl internals. */
3458 /* Useful for attaching extension internal data to perl vars. */
3459 /* Note that multiple extensions may clash if magical scalars */
3460 /* etc holding private data from one are passed to another. */
3464 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3468 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3472 =for apidoc sv_unmagic
3474 Removes magic from an SV.
3480 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3484 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3487 for (mg = *mgp; mg; mg = *mgp) {
3488 if (mg->mg_type == type) {
3489 MGVTBL* vtbl = mg->mg_virtual;
3490 *mgp = mg->mg_moremagic;
3491 if (vtbl && vtbl->svt_free)
3492 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3493 if (mg->mg_ptr && mg->mg_type != 'g')
3494 if (mg->mg_len >= 0)
3495 Safefree(mg->mg_ptr);
3496 else if (mg->mg_len == HEf_SVKEY)
3497 SvREFCNT_dec((SV*)mg->mg_ptr);
3498 if (mg->mg_flags & MGf_REFCOUNTED)
3499 SvREFCNT_dec(mg->mg_obj);
3503 mgp = &mg->mg_moremagic;
3507 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3514 =for apidoc sv_rvweaken
3522 Perl_sv_rvweaken(pTHX_ SV *sv)
3525 if (!SvOK(sv)) /* let undefs pass */
3528 Perl_croak(aTHX_ "Can't weaken a nonreference");
3529 else if (SvWEAKREF(sv)) {
3530 if (ckWARN(WARN_MISC))
3531 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3535 sv_add_backref(tsv, sv);
3542 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3546 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3547 av = (AV*)mg->mg_obj;
3550 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3551 SvREFCNT_dec(av); /* for sv_magic */
3557 S_sv_del_backref(pTHX_ SV *sv)
3564 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3565 Perl_croak(aTHX_ "panic: del_backref");
3566 av = (AV *)mg->mg_obj;
3571 svp[i] = &PL_sv_undef; /* XXX */
3578 =for apidoc sv_insert
3580 Inserts a string at the specified offset/length within the SV. Similar to
3581 the Perl substr() function.
3587 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3591 register char *midend;
3592 register char *bigend;
3598 Perl_croak(aTHX_ "Can't modify non-existent substring");
3599 SvPV_force(bigstr, curlen);
3600 (void)SvPOK_only_UTF8(bigstr);
3601 if (offset + len > curlen) {
3602 SvGROW(bigstr, offset+len+1);
3603 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3604 SvCUR_set(bigstr, offset+len);
3608 i = littlelen - len;
3609 if (i > 0) { /* string might grow */
3610 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3611 mid = big + offset + len;
3612 midend = bigend = big + SvCUR(bigstr);
3615 while (midend > mid) /* shove everything down */
3616 *--bigend = *--midend;
3617 Move(little,big+offset,littlelen,char);
3623 Move(little,SvPVX(bigstr)+offset,len,char);
3628 big = SvPVX(bigstr);
3631 bigend = big + SvCUR(bigstr);
3633 if (midend > bigend)
3634 Perl_croak(aTHX_ "panic: sv_insert");
3636 if (mid - big > bigend - midend) { /* faster to shorten from end */
3638 Move(little, mid, littlelen,char);
3641 i = bigend - midend;
3643 Move(midend, mid, i,char);
3647 SvCUR_set(bigstr, mid - big);
3650 else if ((i = mid - big)) { /* faster from front */
3651 midend -= littlelen;
3653 sv_chop(bigstr,midend-i);
3658 Move(little, mid, littlelen,char);
3660 else if (littlelen) {
3661 midend -= littlelen;
3662 sv_chop(bigstr,midend);
3663 Move(little,midend,littlelen,char);
3666 sv_chop(bigstr,midend);
3672 =for apidoc sv_replace
3674 Make the first argument a copy of the second, then delete the original.
3680 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3682 U32 refcnt = SvREFCNT(sv);
3683 SV_CHECK_THINKFIRST(sv);
3684 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3685 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3686 if (SvMAGICAL(sv)) {
3690 sv_upgrade(nsv, SVt_PVMG);
3691 SvMAGIC(nsv) = SvMAGIC(sv);
3692 SvFLAGS(nsv) |= SvMAGICAL(sv);
3698 assert(!SvREFCNT(sv));
3699 StructCopy(nsv,sv,SV);
3700 SvREFCNT(sv) = refcnt;
3701 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3706 =for apidoc sv_clear
3708 Clear an SV, making it empty. Does not free the memory used by the SV
3715 Perl_sv_clear(pTHX_ register SV *sv)
3719 assert(SvREFCNT(sv) == 0);
3722 if (PL_defstash) { /* Still have a symbol table? */
3727 Zero(&tmpref, 1, SV);
3728 sv_upgrade(&tmpref, SVt_RV);
3730 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3731 SvREFCNT(&tmpref) = 1;
3734 stash = SvSTASH(sv);
3735 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3738 PUSHSTACKi(PERLSI_DESTROY);
3739 SvRV(&tmpref) = SvREFCNT_inc(sv);
3744 call_sv((SV*)GvCV(destructor),
3745 G_DISCARD|G_EVAL|G_KEEPERR);
3751 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3753 del_XRV(SvANY(&tmpref));
3756 if (PL_in_clean_objs)
3757 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3759 /* DESTROY gave object new lease on life */
3765 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3766 SvOBJECT_off(sv); /* Curse the object. */
3767 if (SvTYPE(sv) != SVt_PVIO)
3768 --PL_sv_objcount; /* XXX Might want something more general */
3771 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3774 switch (SvTYPE(sv)) {
3777 IoIFP(sv) != PerlIO_stdin() &&
3778 IoIFP(sv) != PerlIO_stdout() &&
3779 IoIFP(sv) != PerlIO_stderr())
3781 io_close((IO*)sv, FALSE);
3783 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3784 PerlDir_close(IoDIRP(sv));
3785 IoDIRP(sv) = (DIR*)NULL;
3786 Safefree(IoTOP_NAME(sv));
3787 Safefree(IoFMT_NAME(sv));
3788 Safefree(IoBOTTOM_NAME(sv));
3803 SvREFCNT_dec(LvTARG(sv));
3807 Safefree(GvNAME(sv));
3808 /* cannot decrease stash refcount yet, as we might recursively delete
3809 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3810 of stash until current sv is completely gone.
3811 -- JohnPC, 27 Mar 1998 */
3812 stash = GvSTASH(sv);
3818 (void)SvOOK_off(sv);
3826 SvREFCNT_dec(SvRV(sv));
3828 else if (SvPVX(sv) && SvLEN(sv))
3829 Safefree(SvPVX(sv));
3830 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3831 unsharepvn(SvPVX(sv),SvUTF8(sv)?-SvCUR(sv):SvCUR(sv),SvUVX(sv));
3843 switch (SvTYPE(sv)) {
3859 del_XPVIV(SvANY(sv));
3862 del_XPVNV(SvANY(sv));
3865 del_XPVMG(SvANY(sv));
3868 del_XPVLV(SvANY(sv));
3871 del_XPVAV(SvANY(sv));
3874 del_XPVHV(SvANY(sv));
3877 del_XPVCV(SvANY(sv));
3880 del_XPVGV(SvANY(sv));
3881 /* code duplication for increased performance. */
3882 SvFLAGS(sv) &= SVf_BREAK;
3883 SvFLAGS(sv) |= SVTYPEMASK;
3884 /* decrease refcount of the stash that owns this GV, if any */
3886 SvREFCNT_dec(stash);
3887 return; /* not break, SvFLAGS reset already happened */
3889 del_XPVBM(SvANY(sv));
3892 del_XPVFM(SvANY(sv));
3895 del_XPVIO(SvANY(sv));
3898 SvFLAGS(sv) &= SVf_BREAK;
3899 SvFLAGS(sv) |= SVTYPEMASK;
3903 Perl_sv_newref(pTHX_ SV *sv)
3906 ATOMIC_INC(SvREFCNT(sv));
3913 Free the memory used by an SV.
3919 Perl_sv_free(pTHX_ SV *sv)
3921 int refcount_is_zero;
3925 if (SvREFCNT(sv) == 0) {
3926 if (SvFLAGS(sv) & SVf_BREAK)
3928 if (PL_in_clean_all) /* All is fair */
3930 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3931 /* make sure SvREFCNT(sv)==0 happens very seldom */
3932 SvREFCNT(sv) = (~(U32)0)/2;
3935 if (ckWARN_d(WARN_INTERNAL))
3936 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3939 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3940 if (!refcount_is_zero)
3944 if (ckWARN_d(WARN_DEBUGGING))
3945 Perl_warner(aTHX_ WARN_DEBUGGING,
3946 "Attempt to free temp prematurely: SV 0x%"UVxf,
3951 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3952 /* make sure SvREFCNT(sv)==0 happens very seldom */
3953 SvREFCNT(sv) = (~(U32)0)/2;
3964 Returns the length of the string in the SV. See also C<SvCUR>.
3970 Perl_sv_len(pTHX_ register SV *sv)
3979 len = mg_length(sv);
3981 junk = SvPV(sv, len);
3986 =for apidoc sv_len_utf8
3988 Returns the number of characters in the string in an SV, counting wide
3989 UTF8 bytes as a single character.
3995 Perl_sv_len_utf8(pTHX_ register SV *sv)
4002 return mg_length(sv);
4007 U8 *s = (U8*)SvPV(sv, len);
4009 return Perl_utf8_length(aTHX_ s, s + len);
4014 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4019 I32 uoffset = *offsetp;
4025 start = s = (U8*)SvPV(sv, len);
4027 while (s < send && uoffset--)
4031 *offsetp = s - start;
4035 while (s < send && ulen--)
4045 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4054 s = (U8*)SvPV(sv, len);
4056 Perl_croak(aTHX_ "panic: bad byte offset");
4057 send = s + *offsetp;
4064 if (ckWARN_d(WARN_UTF8))
4065 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4075 Returns a boolean indicating whether the strings in the two SVs are
4082 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4089 bool pv1tmp = FALSE;
4090 bool pv2tmp = FALSE;
4097 pv1 = SvPV(sv1, cur1);
4104 pv2 = SvPV(sv2, cur2);
4106 /* do not utf8ize the comparands as a side-effect */
4107 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4109 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4113 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4119 eq = memEQ(pv1, pv2, cur1);
4132 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4133 string in C<sv1> is less than, equal to, or greater than the string in
4140 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4145 bool pv1tmp = FALSE;
4146 bool pv2tmp = FALSE;
4153 pv1 = SvPV(sv1, cur1);
4160 pv2 = SvPV(sv2, cur2);
4162 /* do not utf8ize the comparands as a side-effect */
4163 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4165 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4169 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4175 cmp = cur2 ? -1 : 0;
4179 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4182 cmp = retval < 0 ? -1 : 1;
4183 } else if (cur1 == cur2) {
4186 cmp = cur1 < cur2 ? -1 : 1;
4199 =for apidoc sv_cmp_locale
4201 Compares the strings in two SVs in a locale-aware manner. See
4208 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4210 #ifdef USE_LOCALE_COLLATE
4216 if (PL_collation_standard)
4220 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4222 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4224 if (!pv1 || !len1) {
4235 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4238 return retval < 0 ? -1 : 1;
4241 * When the result of collation is equality, that doesn't mean
4242 * that there are no differences -- some locales exclude some
4243 * characters from consideration. So to avoid false equalities,
4244 * we use the raw string as a tiebreaker.
4250 #endif /* USE_LOCALE_COLLATE */
4252 return sv_cmp(sv1, sv2);
4255 #ifdef USE_LOCALE_COLLATE
4257 * Any scalar variable may carry an 'o' magic that contains the
4258 * scalar data of the variable transformed to such a format that
4259 * a normal memory comparison can be used to compare the data
4260 * according to the locale settings.
4263 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4267 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4268 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4273 Safefree(mg->mg_ptr);
4275 if ((xf = mem_collxfrm(s, len, &xlen))) {
4276 if (SvREADONLY(sv)) {
4279 return xf + sizeof(PL_collation_ix);
4282 sv_magic(sv, 0, 'o', 0, 0);
4283 mg = mg_find(sv, 'o');
4296 if (mg && mg->mg_ptr) {
4298 return mg->mg_ptr + sizeof(PL_collation_ix);
4306 #endif /* USE_LOCALE_COLLATE */
4311 Get a line from the filehandle and store it into the SV, optionally
4312 appending to the currently-stored string.
4318 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4322 register STDCHAR rslast;
4323 register STDCHAR *bp;
4327 SV_CHECK_THINKFIRST(sv);
4328 (void)SvUPGRADE(sv, SVt_PV);
4332 if (RsSNARF(PL_rs)) {
4336 else if (RsRECORD(PL_rs)) {
4337 I32 recsize, bytesread;
4340 /* Grab the size of the record we're getting */
4341 recsize = SvIV(SvRV(PL_rs));
4342 (void)SvPOK_only(sv); /* Validate pointer */
4343 buffer = SvGROW(sv, recsize + 1);
4346 /* VMS wants read instead of fread, because fread doesn't respect */
4347 /* RMS record boundaries. This is not necessarily a good thing to be */
4348 /* doing, but we've got no other real choice */
4349 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4351 bytesread = PerlIO_read(fp, buffer, recsize);
4353 SvCUR_set(sv, bytesread);
4354 buffer[bytesread] = '\0';
4355 if (PerlIO_isutf8(fp))
4359 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4361 else if (RsPARA(PL_rs)) {
4366 /* Get $/ i.e. PL_rs into same encoding as stream wants */
4367 if (PerlIO_isutf8(fp)) {
4368 rsptr = SvPVutf8(PL_rs, rslen);
4371 if (SvUTF8(PL_rs)) {
4372 if (!sv_utf8_downgrade(PL_rs, TRUE)) {
4373 Perl_croak(aTHX_ "Wide character in $/");
4376 rsptr = SvPV(PL_rs, rslen);
4380 rslast = rslen ? rsptr[rslen - 1] : '\0';
4382 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4383 do { /* to make sure file boundaries work right */
4386 i = PerlIO_getc(fp);
4390 PerlIO_ungetc(fp,i);
4396 /* See if we know enough about I/O mechanism to cheat it ! */
4398 /* This used to be #ifdef test - it is made run-time test for ease
4399 of abstracting out stdio interface. One call should be cheap
4400 enough here - and may even be a macro allowing compile
4404 if (PerlIO_fast_gets(fp)) {
4407 * We're going to steal some values from the stdio struct
4408 * and put EVERYTHING in the innermost loop into registers.
4410 register STDCHAR *ptr;
4414 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4415 /* An ungetc()d char is handled separately from the regular
4416 * buffer, so we getc() it back out and stuff it in the buffer.
4418 i = PerlIO_getc(fp);
4419 if (i == EOF) return 0;
4420 *(--((*fp)->_ptr)) = (unsigned char) i;
4424 /* Here is some breathtakingly efficient cheating */
4426 cnt = PerlIO_get_cnt(fp); /* get count into register */
4427 (void)SvPOK_only(sv); /* validate pointer */
4428 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4429 if (cnt > 80 && SvLEN(sv) > append) {
4430 shortbuffered = cnt - SvLEN(sv) + append + 1;
4431 cnt -= shortbuffered;
4435 /* remember that cnt can be negative */
4436 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4441 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4442 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4443 DEBUG_P(PerlIO_printf(Perl_debug_log,
4444 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4445 DEBUG_P(PerlIO_printf(Perl_debug_log,
4446 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4447 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4448 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4453 while (cnt > 0) { /* this | eat */
4455 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4456 goto thats_all_folks; /* screams | sed :-) */
4460 Copy(ptr, bp, cnt, char); /* this | eat */
4461 bp += cnt; /* screams | dust */
4462 ptr += cnt; /* louder | sed :-) */
4467 if (shortbuffered) { /* oh well, must extend */
4468 cnt = shortbuffered;
4470 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4472 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4473 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4477 DEBUG_P(PerlIO_printf(Perl_debug_log,
4478 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4479 PTR2UV(ptr),(long)cnt));
4480 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4481 DEBUG_P(PerlIO_printf(Perl_debug_log,
4482 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4483 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4484 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4485 /* This used to call 'filbuf' in stdio form, but as that behaves like
4486 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4487 another abstraction. */
4488 i = PerlIO_getc(fp); /* get more characters */
4489 DEBUG_P(PerlIO_printf(Perl_debug_log,
4490 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4491 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4492 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4493 cnt = PerlIO_get_cnt(fp);
4494 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4495 DEBUG_P(PerlIO_printf(Perl_debug_log,
4496 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4498 if (i == EOF) /* all done for ever? */
4499 goto thats_really_all_folks;
4501 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4503 SvGROW(sv, bpx + cnt + 2);
4504 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4506 *bp++ = i; /* store character from PerlIO_getc */
4508 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4509 goto thats_all_folks;
4513 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4514 memNE((char*)bp - rslen, rsptr, rslen))
4515 goto screamer; /* go back to the fray */
4516 thats_really_all_folks:
4518 cnt += shortbuffered;
4519 DEBUG_P(PerlIO_printf(Perl_debug_log,
4520 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4521 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4522 DEBUG_P(PerlIO_printf(Perl_debug_log,
4523 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4524 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4525 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4527 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4528 DEBUG_P(PerlIO_printf(Perl_debug_log,
4529 "Screamer: done, len=%ld, string=|%.*s|\n",
4530 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4535 /*The big, slow, and stupid way */
4538 /* Need to work around EPOC SDK features */
4539 /* On WINS: MS VC5 generates calls to _chkstk, */
4540 /* if a `large' stack frame is allocated */
4541 /* gcc on MARM does not generate calls like these */
4547 register STDCHAR *bpe = buf + sizeof(buf);
4549 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4550 ; /* keep reading */
4554 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4555 /* Accomodate broken VAXC compiler, which applies U8 cast to
4556 * both args of ?: operator, causing EOF to change into 255
4558 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4562 sv_catpvn(sv, (char *) buf, cnt);
4564 sv_setpvn(sv, (char *) buf, cnt);
4566 if (i != EOF && /* joy */
4568 SvCUR(sv) < rslen ||
4569 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4573 * If we're reading from a TTY and we get a short read,
4574 * indicating that the user hit his EOF character, we need
4575 * to notice it now, because if we try to read from the TTY
4576 * again, the EOF condition will disappear.
4578 * The comparison of cnt to sizeof(buf) is an optimization
4579 * that prevents unnecessary calls to feof().
4583 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4588 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4589 while (i != EOF) { /* to make sure file boundaries work right */
4590 i = PerlIO_getc(fp);
4592 PerlIO_ungetc(fp,i);
4598 if (PerlIO_isutf8(fp))
4603 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4610 Auto-increment of the value in the SV.
4616 Perl_sv_inc(pTHX_ register SV *sv)
4625 if (SvTHINKFIRST(sv)) {
4626 if (SvREADONLY(sv)) {
4627 if (PL_curcop != &PL_compiling)
4628 Perl_croak(aTHX_ PL_no_modify);
4632 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4634 i = PTR2IV(SvRV(sv));
4639 flags = SvFLAGS(sv);
4640 if (flags & SVp_NOK) {
4641 (void)SvNOK_only(sv);
4645 if (flags & SVp_IOK) {
4647 if (SvUVX(sv) == UV_MAX)
4648 sv_setnv(sv, (NV)UV_MAX + 1.0);
4650 (void)SvIOK_only_UV(sv);
4653 if (SvIVX(sv) == IV_MAX)
4654 sv_setnv(sv, (NV)IV_MAX + 1.0);
4656 (void)SvIOK_only(sv);
4662 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4663 if ((flags & SVTYPEMASK) < SVt_PVNV)
4664 sv_upgrade(sv, SVt_IV);
4665 (void)SvIOK_only(sv);
4670 while (isALPHA(*d)) d++;
4671 while (isDIGIT(*d)) d++;
4673 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4677 while (d >= SvPVX(sv)) {
4685 /* MKS: The original code here died if letters weren't consecutive.
4686 * at least it didn't have to worry about non-C locales. The
4687 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4688 * arranged in order (although not consecutively) and that only
4689 * [A-Za-z] are accepted by isALPHA in the C locale.
4691 if (*d != 'z' && *d != 'Z') {
4692 do { ++*d; } while (!isALPHA(*d));
4695 *(d--) -= 'z' - 'a';
4700 *(d--) -= 'z' - 'a' + 1;
4704 /* oh,oh, the number grew */
4705 SvGROW(sv, SvCUR(sv) + 2);
4707 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4718 Auto-decrement of the value in the SV.
4724 Perl_sv_dec(pTHX_ register SV *sv)
4732 if (SvTHINKFIRST(sv)) {
4733 if (SvREADONLY(sv)) {
4734 if (PL_curcop != &PL_compiling)
4735 Perl_croak(aTHX_ PL_no_modify);
4739 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4741 i = PTR2IV(SvRV(sv));
4746 flags = SvFLAGS(sv);
4747 if (flags & SVp_NOK) {
4749 (void)SvNOK_only(sv);
4752 if (flags & SVp_IOK) {
4754 if (SvUVX(sv) == 0) {
4755 (void)SvIOK_only(sv);
4759 (void)SvIOK_only_UV(sv);
4763 if (SvIVX(sv) == IV_MIN)
4764 sv_setnv(sv, (NV)IV_MIN - 1.0);
4766 (void)SvIOK_only(sv);
4772 if (!(flags & SVp_POK)) {
4773 if ((flags & SVTYPEMASK) < SVt_PVNV)
4774 sv_upgrade(sv, SVt_NV);
4776 (void)SvNOK_only(sv);
4779 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4783 =for apidoc sv_mortalcopy
4785 Creates a new SV which is a copy of the original SV. The new SV is marked
4791 /* Make a string that will exist for the duration of the expression
4792 * evaluation. Actually, it may have to last longer than that, but
4793 * hopefully we won't free it until it has been assigned to a
4794 * permanent location. */
4797 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4802 sv_setsv(sv,oldstr);
4804 PL_tmps_stack[++PL_tmps_ix] = sv;
4810 =for apidoc sv_newmortal
4812 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4818 Perl_sv_newmortal(pTHX)
4823 SvFLAGS(sv) = SVs_TEMP;
4825 PL_tmps_stack[++PL_tmps_ix] = sv;
4830 =for apidoc sv_2mortal
4832 Marks an SV as mortal. The SV will be destroyed when the current context
4838 /* same thing without the copying */
4841 Perl_sv_2mortal(pTHX_ register SV *sv)
4845 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4848 PL_tmps_stack[++PL_tmps_ix] = sv;
4856 Creates a new SV and copies a string into it. The reference count for the
4857 SV is set to 1. If C<len> is zero, Perl will compute the length using
4858 strlen(). For efficiency, consider using C<newSVpvn> instead.
4864 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4871 sv_setpvn(sv,s,len);
4876 =for apidoc newSVpvn
4878 Creates a new SV and copies a string into it. The reference count for the
4879 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4880 string. You are responsible for ensuring that the source string is at least
4887 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4892 sv_setpvn(sv,s,len);
4897 =for apidoc newSVpvn_share
4899 Creates a new SV and populates it with a string from
4900 the string table. Turns on READONLY and FAKE.
4901 The idea here is that as string table is used for shared hash
4902 keys these strings will have SvPVX == HeKEY and hash lookup
4903 will avoid string compare.
4909 Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash)
4912 bool is_utf8 = FALSE;
4918 PERL_HASH(hash, src, len);
4920 sv_upgrade(sv, SVt_PVIV);
4921 SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash);
4933 #if defined(PERL_IMPLICIT_CONTEXT)
4935 Perl_newSVpvf_nocontext(const char* pat, ...)
4940 va_start(args, pat);
4941 sv = vnewSVpvf(pat, &args);
4948 =for apidoc newSVpvf
4950 Creates a new SV an initialize it with the string formatted like
4957 Perl_newSVpvf(pTHX_ const char* pat, ...)
4961 va_start(args, pat);
4962 sv = vnewSVpvf(pat, &args);
4968 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4972 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4979 Creates a new SV and copies a floating point value into it.
4980 The reference count for the SV is set to 1.
4986 Perl_newSVnv(pTHX_ NV n)
4998 Creates a new SV and copies an integer into it. The reference count for the
5005 Perl_newSViv(pTHX_ IV i)
5017 Creates a new SV and copies an unsigned integer into it.
5018 The reference count for the SV is set to 1.
5024 Perl_newSVuv(pTHX_ UV u)
5034 =for apidoc newRV_noinc
5036 Creates an RV wrapper for an SV. The reference count for the original
5037 SV is B<not> incremented.
5043 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5048 sv_upgrade(sv, SVt_RV);
5055 /* newRV_inc is #defined to newRV in sv.h */
5057 Perl_newRV(pTHX_ SV *tmpRef)
5059 return newRV_noinc(SvREFCNT_inc(tmpRef));
5065 Creates a new SV which is an exact duplicate of the original SV.
5070 /* make an exact duplicate of old */
5073 Perl_newSVsv(pTHX_ register SV *old)
5079 if (SvTYPE(old) == SVTYPEMASK) {
5080 if (ckWARN_d(WARN_INTERNAL))
5081 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5096 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5104 char todo[PERL_UCHAR_MAX+1];
5109 if (!*s) { /* reset ?? searches */
5110 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5111 pm->op_pmdynflags &= ~PMdf_USED;
5116 /* reset variables */
5118 if (!HvARRAY(stash))
5121 Zero(todo, 256, char);
5123 i = (unsigned char)*s;
5127 max = (unsigned char)*s++;
5128 for ( ; i <= max; i++) {
5131 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5132 for (entry = HvARRAY(stash)[i];
5134 entry = HeNEXT(entry))
5136 if (!todo[(U8)*HeKEY(entry)])
5138 gv = (GV*)HeVAL(entry);
5140 if (SvTHINKFIRST(sv)) {
5141 if (!SvREADONLY(sv) && SvROK(sv))
5146 if (SvTYPE(sv) >= SVt_PV) {
5148 if (SvPVX(sv) != Nullch)
5155 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5157 #ifdef USE_ENVIRON_ARRAY
5159 environ[0] = Nullch;
5168 Perl_sv_2io(pTHX_ SV *sv)
5174 switch (SvTYPE(sv)) {
5182 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5186 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5188 return sv_2io(SvRV(sv));
5189 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5195 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5202 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5209 return *gvp = Nullgv, Nullcv;
5210 switch (SvTYPE(sv)) {
5229 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5230 tryAMAGICunDEREF(to_cv);
5233 if (SvTYPE(sv) == SVt_PVCV) {
5242 Perl_croak(aTHX_ "Not a subroutine reference");
5247 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5253 if (lref && !GvCVu(gv)) {
5256 tmpsv = NEWSV(704,0);
5257 gv_efullname3(tmpsv, gv, Nullch);
5258 /* XXX this is probably not what they think they're getting.
5259 * It has the same effect as "sub name;", i.e. just a forward
5261 newSUB(start_subparse(FALSE, 0),
5262 newSVOP(OP_CONST, 0, tmpsv),
5267 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5276 Returns true if the SV has a true value by Perl's rules.
5282 Perl_sv_true(pTHX_ register SV *sv)
5288 if ((tXpv = (XPV*)SvANY(sv)) &&
5289 (tXpv->xpv_cur > 1 ||
5290 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5297 return SvIVX(sv) != 0;
5300 return SvNVX(sv) != 0.0;
5302 return sv_2bool(sv);
5308 Perl_sv_iv(pTHX_ register SV *sv)
5312 return (IV)SvUVX(sv);
5319 Perl_sv_uv(pTHX_ register SV *sv)
5324 return (UV)SvIVX(sv);
5330 Perl_sv_nv(pTHX_ register SV *sv)
5338 Perl_sv_pv(pTHX_ SV *sv)
5345 return sv_2pv(sv, &n_a);
5349 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5355 return sv_2pv(sv, lp);
5359 =for apidoc sv_pvn_force
5361 Get a sensible string out of the SV somehow.
5367 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5371 if (SvTHINKFIRST(sv) && !SvROK(sv))
5372 sv_force_normal(sv);
5378 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5379 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5380 PL_op_name[PL_op->op_type]);
5384 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5389 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5390 SvGROW(sv, len + 1);
5391 Move(s,SvPVX(sv),len,char);
5396 SvPOK_on(sv); /* validate pointer */
5398 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5399 PTR2UV(sv),SvPVX(sv)));
5406 Perl_sv_pvbyte(pTHX_ SV *sv)
5412 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5414 return sv_pvn(sv,lp);
5418 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5420 return sv_pvn_force(sv,lp);
5424 Perl_sv_pvutf8(pTHX_ SV *sv)
5426 sv_utf8_upgrade(sv);
5431 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5433 sv_utf8_upgrade(sv);
5434 return sv_pvn(sv,lp);
5438 =for apidoc sv_pvutf8n_force
5440 Get a sensible UTF8-encoded string out of the SV somehow. See
5447 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5449 sv_utf8_upgrade(sv);
5450 return sv_pvn_force(sv,lp);
5454 =for apidoc sv_reftype
5456 Returns a string describing what the SV is a reference to.
5462 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5464 if (ob && SvOBJECT(sv))
5465 return HvNAME(SvSTASH(sv));
5467 switch (SvTYPE(sv)) {
5481 case SVt_PVLV: return "LVALUE";
5482 case SVt_PVAV: return "ARRAY";
5483 case SVt_PVHV: return "HASH";
5484 case SVt_PVCV: return "CODE";
5485 case SVt_PVGV: return "GLOB";
5486 case SVt_PVFM: return "FORMAT";
5487 case SVt_PVIO: return "IO";
5488 default: return "UNKNOWN";
5494 =for apidoc sv_isobject
5496 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5497 object. If the SV is not an RV, or if the object is not blessed, then this
5504 Perl_sv_isobject(pTHX_ SV *sv)
5521 Returns a boolean indicating whether the SV is blessed into the specified
5522 class. This does not check for subtypes; use C<sv_derived_from> to verify
5523 an inheritance relationship.
5529 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5541 return strEQ(HvNAME(SvSTASH(sv)), name);
5547 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5548 it will be upgraded to one. If C<classname> is non-null then the new SV will
5549 be blessed in the specified package. The new SV is returned and its
5550 reference count is 1.
5556 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5562 SV_CHECK_THINKFIRST(rv);
5565 if (SvTYPE(rv) >= SVt_PVMG) {
5566 U32 refcnt = SvREFCNT(rv);
5570 SvREFCNT(rv) = refcnt;
5573 if (SvTYPE(rv) < SVt_RV)
5574 sv_upgrade(rv, SVt_RV);
5575 else if (SvTYPE(rv) > SVt_RV) {
5576 (void)SvOOK_off(rv);
5577 if (SvPVX(rv) && SvLEN(rv))
5578 Safefree(SvPVX(rv));
5588 HV* stash = gv_stashpv(classname, TRUE);
5589 (void)sv_bless(rv, stash);
5595 =for apidoc sv_setref_pv
5597 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5598 argument will be upgraded to an RV. That RV will be modified to point to
5599 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5600 into the SV. The C<classname> argument indicates the package for the
5601 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5602 will be returned and will have a reference count of 1.
5604 Do not use with other Perl types such as HV, AV, SV, CV, because those
5605 objects will become corrupted by the pointer copy process.
5607 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5613 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5616 sv_setsv(rv, &PL_sv_undef);
5620 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5625 =for apidoc sv_setref_iv
5627 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5628 argument will be upgraded to an RV. That RV will be modified to point to
5629 the new SV. The C<classname> argument indicates the package for the
5630 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5631 will be returned and will have a reference count of 1.
5637 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5639 sv_setiv(newSVrv(rv,classname), iv);
5644 =for apidoc sv_setref_nv
5646 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5647 argument will be upgraded to an RV. That RV will be modified to point to
5648 the new SV. The C<classname> argument indicates the package for the
5649 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5650 will be returned and will have a reference count of 1.
5656 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5658 sv_setnv(newSVrv(rv,classname), nv);
5663 =for apidoc sv_setref_pvn
5665 Copies a string into a new SV, optionally blessing the SV. The length of the
5666 string must be specified with C<n>. The C<rv> argument will be upgraded to
5667 an RV. That RV will be modified to point to the new SV. The C<classname>
5668 argument indicates the package for the blessing. Set C<classname> to
5669 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5670 a reference count of 1.
5672 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5678 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5680 sv_setpvn(newSVrv(rv,classname), pv, n);
5685 =for apidoc sv_bless
5687 Blesses an SV into a specified package. The SV must be an RV. The package
5688 must be designated by its stash (see C<gv_stashpv()>). The reference count
5689 of the SV is unaffected.
5695 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5699 Perl_croak(aTHX_ "Can't bless non-reference value");
5701 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5702 if (SvREADONLY(tmpRef))
5703 Perl_croak(aTHX_ PL_no_modify);
5704 if (SvOBJECT(tmpRef)) {
5705 if (SvTYPE(tmpRef) != SVt_PVIO)
5707 SvREFCNT_dec(SvSTASH(tmpRef));
5710 SvOBJECT_on(tmpRef);
5711 if (SvTYPE(tmpRef) != SVt_PVIO)
5713 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5714 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5725 S_sv_unglob(pTHX_ SV *sv)
5729 assert(SvTYPE(sv) == SVt_PVGV);
5734 SvREFCNT_dec(GvSTASH(sv));
5735 GvSTASH(sv) = Nullhv;
5737 sv_unmagic(sv, '*');
5738 Safefree(GvNAME(sv));
5741 /* need to keep SvANY(sv) in the right arena */
5742 xpvmg = new_XPVMG();
5743 StructCopy(SvANY(sv), xpvmg, XPVMG);
5744 del_XPVGV(SvANY(sv));
5747 SvFLAGS(sv) &= ~SVTYPEMASK;
5748 SvFLAGS(sv) |= SVt_PVMG;
5752 =for apidoc sv_unref_flags
5754 Unsets the RV status of the SV, and decrements the reference count of
5755 whatever was being referenced by the RV. This can almost be thought of
5756 as a reversal of C<newSVrv>. The C<cflags> argument can contain
5757 C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented
5758 (otherwise the decrementing is conditional on the reference count being
5759 different from one or the reference being a readonly SV).
5766 Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags)
5770 if (SvWEAKREF(sv)) {
5778 if (SvREFCNT(rv) != 1 || SvREADONLY(rv) || flags) /* SV_IMMEDIATE_UNREF */
5780 else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */
5781 sv_2mortal(rv); /* Schedule for freeing later */
5785 =for apidoc sv_unref
5787 Unsets the RV status of the SV, and decrements the reference count of
5788 whatever was being referenced by the RV. This can almost be thought of
5789 as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
5790 being zero. See C<SvROK_off>.
5796 Perl_sv_unref(pTHX_ SV *sv)
5798 sv_unref_flags(sv, 0);
5802 Perl_sv_taint(pTHX_ SV *sv)
5804 sv_magic((sv), Nullsv, 't', Nullch, 0);
5808 Perl_sv_untaint(pTHX_ SV *sv)
5810 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5811 MAGIC *mg = mg_find(sv, 't');
5818 Perl_sv_tainted(pTHX_ SV *sv)
5820 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5821 MAGIC *mg = mg_find(sv, 't');
5822 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5829 =for apidoc sv_setpviv
5831 Copies an integer into the given SV, also updating its string value.
5832 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5838 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5840 char buf[TYPE_CHARS(UV)];
5842 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5844 sv_setpvn(sv, ptr, ebuf - ptr);
5849 =for apidoc sv_setpviv_mg
5851 Like C<sv_setpviv>, but also handles 'set' magic.
5857 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5859 char buf[TYPE_CHARS(UV)];
5861 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5863 sv_setpvn(sv, ptr, ebuf - ptr);
5867 #if defined(PERL_IMPLICIT_CONTEXT)
5869 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5873 va_start(args, pat);
5874 sv_vsetpvf(sv, pat, &args);
5880 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5884 va_start(args, pat);
5885 sv_vsetpvf_mg(sv, pat, &args);
5891 =for apidoc sv_setpvf
5893 Processes its arguments like C<sprintf> and sets an SV to the formatted
5894 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5900 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5903 va_start(args, pat);
5904 sv_vsetpvf(sv, pat, &args);
5909 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5911 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5915 =for apidoc sv_setpvf_mg
5917 Like C<sv_setpvf>, but also handles 'set' magic.
5923 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5926 va_start(args, pat);
5927 sv_vsetpvf_mg(sv, pat, &args);
5932 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5934 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5938 #if defined(PERL_IMPLICIT_CONTEXT)
5940 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5944 va_start(args, pat);
5945 sv_vcatpvf(sv, pat, &args);
5950 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5954 va_start(args, pat);
5955 sv_vcatpvf_mg(sv, pat, &args);
5961 =for apidoc sv_catpvf
5963 Processes its arguments like C<sprintf> and appends the formatted output
5964 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5965 typically be called after calling this function to handle 'set' magic.
5971 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5974 va_start(args, pat);
5975 sv_vcatpvf(sv, pat, &args);
5980 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5982 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5986 =for apidoc sv_catpvf_mg
5988 Like C<sv_catpvf>, but also handles 'set' magic.
5994 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5997 va_start(args, pat);
5998 sv_vcatpvf_mg(sv, pat, &args);
6003 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6005 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6010 =for apidoc sv_vsetpvfn
6012 Works like C<vcatpvfn> but copies the text into the SV instead of
6019 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6021 sv_setpvn(sv, "", 0);
6022 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
6026 =for apidoc sv_vcatpvfn
6028 Processes its arguments like C<vsprintf> and appends the formatted output
6029 to an SV. Uses an array of SVs if the C style variable argument list is
6030 missing (NULL). When running with taint checks enabled, indicates via
6031 C<maybe_tainted> if results are untrustworthy (often due to the use of
6038 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6045 static char nullstr[] = "(null)";
6048 /* no matter what, this is a string now */
6049 (void)SvPV_force(sv, origlen);
6051 /* special-case "", "%s", and "%_" */
6054 if (patlen == 2 && pat[0] == '%') {
6058 char *s = va_arg(*args, char*);
6059 sv_catpv(sv, s ? s : nullstr);
6061 else if (svix < svmax) {
6062 sv_catsv(sv, *svargs);
6063 if (DO_UTF8(*svargs))
6069 argsv = va_arg(*args, SV*);
6070 sv_catsv(sv, argsv);
6075 /* See comment on '_' below */
6080 patend = (char*)pat + patlen;
6081 for (p = (char*)pat; p < patend; p = q) {
6084 bool vectorize = FALSE;
6091 bool has_precis = FALSE;
6093 bool is_utf = FALSE;
6096 U8 utf8buf[UTF8_MAXLEN+1];
6097 STRLEN esignlen = 0;
6099 char *eptr = Nullch;
6101 /* Times 4: a decimal digit takes more than 3 binary digits.
6102 * NV_DIG: mantissa takes than many decimal digits.
6103 * Plus 32: Playing safe. */
6104 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6105 /* large enough for "%#.#f" --chip */
6106 /* what about long double NVs? --jhi */
6109 U8 *vecstr = Null(U8*);
6121 STRLEN dotstrlen = 1;
6122 I32 epix = 0; /* explicit parameter index */
6123 I32 ewix = 0; /* explicit width index */
6124 bool asterisk = FALSE;
6126 for (q = p; q < patend && *q != '%'; ++q) ;
6128 sv_catpvn(sv, p, q - p);
6157 case '*': /* printf("%*vX",":",$ipv6addr) */
6162 vecsv = va_arg(*args, SV*);
6163 else if (svix < svmax)
6164 vecsv = svargs[svix++];
6167 dotstr = SvPVx(vecsv,dotstrlen);
6195 case '1': case '2': case '3':
6196 case '4': case '5': case '6':
6197 case '7': case '8': case '9':
6200 width = width * 10 + (*q++ - '0');
6202 if (asterisk && ewix == 0) {
6207 } else if (epix == 0) {
6219 i = va_arg(*args, int);
6221 i = (ewix ? ewix <= svmax : svix < svmax) ?
6222 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6224 width = (i < 0) ? -i : i;
6233 i = va_arg(*args, int);
6235 i = (ewix ? ewix <= svmax : svix < svmax)
6236 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6237 precis = (i < 0) ? 0 : i;
6243 precis = precis * 10 + (*q++ - '0');
6250 vecsv = va_arg(*args, SV*);
6251 vecstr = (U8*)SvPVx(vecsv,veclen);
6252 utf = DO_UTF8(vecsv);
6254 else if (epix ? epix <= svmax : svix < svmax) {
6255 vecsv = svargs[epix ? epix-1 : svix++];
6256 vecstr = (U8*)SvPVx(vecsv,veclen);
6257 utf = DO_UTF8(vecsv);
6268 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6279 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6280 if (*(q + 1) == 'l') { /* lld, llf */
6307 uv = va_arg(*args, int);
6309 uv = (epix ? epix <= svmax : svix < svmax) ?
6310 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6311 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6312 eptr = (char*)utf8buf;
6313 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6325 eptr = va_arg(*args, char*);
6327 #ifdef MACOS_TRADITIONAL
6328 /* On MacOS, %#s format is used for Pascal strings */
6333 elen = strlen(eptr);
6336 elen = sizeof nullstr - 1;
6339 else if (epix ? epix <= svmax : svix < svmax) {
6340 argsv = svargs[epix ? epix-1 : svix++];
6341 eptr = SvPVx(argsv, elen);
6342 if (DO_UTF8(argsv)) {
6343 if (has_precis && precis < elen) {
6345 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6348 if (width) { /* fudge width (can't fudge elen) */
6349 width += elen - sv_len_utf8(argsv);
6358 * The "%_" hack might have to be changed someday,
6359 * if ISO or ANSI decide to use '_' for something.
6360 * So we keep it hidden from users' code.
6364 argsv = va_arg(*args,SV*);
6365 eptr = SvPVx(argsv, elen);
6371 if (has_precis && elen > precis)
6381 uv = PTR2UV(va_arg(*args, void*));
6383 uv = (epix ? epix <= svmax : svix < svmax) ?
6384 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6404 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6414 case 'h': iv = (short)va_arg(*args, int); break;
6415 default: iv = va_arg(*args, int); break;
6416 case 'l': iv = va_arg(*args, long); break;
6417 case 'V': iv = va_arg(*args, IV); break;
6419 case 'q': iv = va_arg(*args, Quad_t); break;
6424 iv = (epix ? epix <= svmax : svix < svmax) ?
6425 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6427 case 'h': iv = (short)iv; break;
6429 case 'l': iv = (long)iv; break;
6432 case 'q': iv = (Quad_t)iv; break;
6439 esignbuf[esignlen++] = plus;
6443 esignbuf[esignlen++] = '-';
6487 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6497 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6498 default: uv = va_arg(*args, unsigned); break;
6499 case 'l': uv = va_arg(*args, unsigned long); break;
6500 case 'V': uv = va_arg(*args, UV); break;
6502 case 'q': uv = va_arg(*args, Quad_t); break;
6507 uv = (epix ? epix <= svmax : svix < svmax) ?
6508 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6510 case 'h': uv = (unsigned short)uv; break;
6512 case 'l': uv = (unsigned long)uv; break;
6515 case 'q': uv = (Quad_t)uv; break;
6521 eptr = ebuf + sizeof ebuf;
6527 p = (char*)((c == 'X')
6528 ? "0123456789ABCDEF" : "0123456789abcdef");
6534 esignbuf[esignlen++] = '0';
6535 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6541 *--eptr = '0' + dig;
6543 if (alt && *eptr != '0')
6549 *--eptr = '0' + dig;
6552 esignbuf[esignlen++] = '0';
6553 esignbuf[esignlen++] = 'b';
6556 default: /* it had better be ten or less */
6557 #if defined(PERL_Y2KWARN)
6558 if (ckWARN(WARN_Y2K)) {
6560 char *s = SvPV(sv,n);
6561 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6562 && (n == 2 || !isDIGIT(s[n-3])))
6564 Perl_warner(aTHX_ WARN_Y2K,
6565 "Possible Y2K bug: %%%c %s",
6566 c, "format string following '19'");
6572 *--eptr = '0' + dig;
6573 } while (uv /= base);
6576 elen = (ebuf + sizeof ebuf) - eptr;
6579 zeros = precis - elen;
6580 else if (precis == 0 && elen == 1 && *eptr == '0')
6585 /* FLOATING POINT */
6588 c = 'f'; /* maybe %F isn't supported here */
6594 /* This is evil, but floating point is even more evil */
6598 nv = va_arg(*args, NV);
6600 nv = (epix ? epix <= svmax : svix < svmax) ?
6601 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6604 if (c != 'e' && c != 'E') {
6606 (void)Perl_frexp(nv, &i);
6607 if (i == PERL_INT_MIN)
6608 Perl_die(aTHX_ "panic: frexp");
6610 need = BIT_DIGITS(i);
6612 need += has_precis ? precis : 6; /* known default */
6616 need += 20; /* fudge factor */
6617 if (PL_efloatsize < need) {
6618 Safefree(PL_efloatbuf);
6619 PL_efloatsize = need + 20; /* more fudge */
6620 New(906, PL_efloatbuf, PL_efloatsize, char);
6621 PL_efloatbuf[0] = '\0';
6624 eptr = ebuf + sizeof ebuf;
6627 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6629 /* Copy the one or more characters in a long double
6630 * format before the 'base' ([efgEFG]) character to
6631 * the format string. */
6632 static char const prifldbl[] = PERL_PRIfldbl;
6633 char const *p = prifldbl + sizeof(prifldbl) - 3;
6634 while (p >= prifldbl) { *--eptr = *p--; }
6639 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6644 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6656 /* No taint. Otherwise we are in the strange situation
6657 * where printf() taints but print($float) doesn't.
6659 (void)sprintf(PL_efloatbuf, eptr, nv);
6661 eptr = PL_efloatbuf;
6662 elen = strlen(PL_efloatbuf);
6669 i = SvCUR(sv) - origlen;
6672 case 'h': *(va_arg(*args, short*)) = i; break;
6673 default: *(va_arg(*args, int*)) = i; break;
6674 case 'l': *(va_arg(*args, long*)) = i; break;
6675 case 'V': *(va_arg(*args, IV*)) = i; break;
6677 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6681 else if (epix ? epix <= svmax : svix < svmax)
6682 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6683 continue; /* not "break" */
6690 if (!args && ckWARN(WARN_PRINTF) &&
6691 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6692 SV *msg = sv_newmortal();
6693 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6694 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6697 Perl_sv_catpvf(aTHX_ msg,
6698 "\"%%%c\"", c & 0xFF);
6700 Perl_sv_catpvf(aTHX_ msg,
6701 "\"%%\\%03"UVof"\"",
6704 sv_catpv(msg, "end of string");
6705 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6708 /* output mangled stuff ... */
6714 /* ... right here, because formatting flags should not apply */
6715 SvGROW(sv, SvCUR(sv) + elen + 1);
6717 memcpy(p, eptr, elen);
6720 SvCUR(sv) = p - SvPVX(sv);
6721 continue; /* not "break" */
6724 have = esignlen + zeros + elen;
6725 need = (have > width ? have : width);
6728 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6730 if (esignlen && fill == '0') {
6731 for (i = 0; i < esignlen; i++)
6735 memset(p, fill, gap);
6738 if (esignlen && fill != '0') {
6739 for (i = 0; i < esignlen; i++)
6743 for (i = zeros; i; i--)
6747 memcpy(p, eptr, elen);
6751 memset(p, ' ', gap);
6756 memcpy(p, dotstr, dotstrlen);
6760 vectorize = FALSE; /* done iterating over vecstr */
6765 SvCUR(sv) = p - SvPVX(sv);
6773 #if defined(USE_ITHREADS)
6775 #if defined(USE_THREADS)
6776 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6779 #ifndef GpREFCNT_inc
6780 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6784 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6785 #define av_dup(s) (AV*)sv_dup((SV*)s)
6786 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6787 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6788 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6789 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6790 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6791 #define io_dup(s) (IO*)sv_dup((SV*)s)
6792 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6793 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6794 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6795 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6796 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6799 Perl_re_dup(pTHX_ REGEXP *r)
6801 /* XXX fix when pmop->op_pmregexp becomes shared */
6802 return ReREFCNT_inc(r);
6806 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6810 return (PerlIO*)NULL;
6812 /* look for it in the table first */
6813 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6817 /* create anew and remember what it is */
6818 ret = PerlIO_fdupopen(aTHX_ fp);
6819 ptr_table_store(PL_ptr_table, fp, ret);
6824 Perl_dirp_dup(pTHX_ DIR *dp)
6833 Perl_gp_dup(pTHX_ GP *gp)
6838 /* look for it in the table first */
6839 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6843 /* create anew and remember what it is */
6844 Newz(0, ret, 1, GP);
6845 ptr_table_store(PL_ptr_table, gp, ret);
6848 ret->gp_refcnt = 0; /* must be before any other dups! */
6849 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6850 ret->gp_io = io_dup_inc(gp->gp_io);
6851 ret->gp_form = cv_dup_inc(gp->gp_form);
6852 ret->gp_av = av_dup_inc(gp->gp_av);
6853 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6854 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6855 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6856 ret->gp_cvgen = gp->gp_cvgen;
6857 ret->gp_flags = gp->gp_flags;
6858 ret->gp_line = gp->gp_line;
6859 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6864 Perl_mg_dup(pTHX_ MAGIC *mg)
6866 MAGIC *mgret = (MAGIC*)NULL;
6869 return (MAGIC*)NULL;
6870 /* look for it in the table first */
6871 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6875 for (; mg; mg = mg->mg_moremagic) {
6877 Newz(0, nmg, 1, MAGIC);
6881 mgprev->mg_moremagic = nmg;
6882 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6883 nmg->mg_private = mg->mg_private;
6884 nmg->mg_type = mg->mg_type;
6885 nmg->mg_flags = mg->mg_flags;
6886 if (mg->mg_type == 'r') {
6887 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6890 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6891 ? sv_dup_inc(mg->mg_obj)
6892 : sv_dup(mg->mg_obj);
6894 nmg->mg_len = mg->mg_len;
6895 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6896 if (mg->mg_ptr && mg->mg_type != 'g') {
6897 if (mg->mg_len >= 0) {
6898 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6899 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6900 AMT *amtp = (AMT*)mg->mg_ptr;
6901 AMT *namtp = (AMT*)nmg->mg_ptr;
6903 for (i = 1; i < NofAMmeth; i++) {
6904 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6908 else if (mg->mg_len == HEf_SVKEY)
6909 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6917 Perl_ptr_table_new(pTHX)
6920 Newz(0, tbl, 1, PTR_TBL_t);
6923 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6928 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6930 PTR_TBL_ENT_t *tblent;
6931 UV hash = PTR2UV(sv);
6933 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6934 for (; tblent; tblent = tblent->next) {
6935 if (tblent->oldval == sv)
6936 return tblent->newval;
6942 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6944 PTR_TBL_ENT_t *tblent, **otblent;
6945 /* XXX this may be pessimal on platforms where pointers aren't good
6946 * hash values e.g. if they grow faster in the most significant
6948 UV hash = PTR2UV(oldv);
6952 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6953 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6954 if (tblent->oldval == oldv) {
6955 tblent->newval = newv;
6960 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6961 tblent->oldval = oldv;
6962 tblent->newval = newv;
6963 tblent->next = *otblent;
6966 if (i && tbl->tbl_items > tbl->tbl_max)
6967 ptr_table_split(tbl);
6971 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6973 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6974 UV oldsize = tbl->tbl_max + 1;
6975 UV newsize = oldsize * 2;
6978 Renew(ary, newsize, PTR_TBL_ENT_t*);
6979 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6980 tbl->tbl_max = --newsize;
6982 for (i=0; i < oldsize; i++, ary++) {
6983 PTR_TBL_ENT_t **curentp, **entp, *ent;
6986 curentp = ary + oldsize;
6987 for (entp = ary, ent = *ary; ent; ent = *entp) {
6988 if ((newsize & PTR2UV(ent->oldval)) != i) {
6990 ent->next = *curentp;
7005 Perl_sv_dup(pTHX_ SV *sstr)
7009 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
7011 /* look for it in the table first */
7012 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
7016 /* create anew and remember what it is */
7018 ptr_table_store(PL_ptr_table, sstr, dstr);
7021 SvFLAGS(dstr) = SvFLAGS(sstr);
7022 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
7023 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7026 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7027 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7028 PL_watch_pvx, SvPVX(sstr));
7031 switch (SvTYPE(sstr)) {
7036 SvANY(dstr) = new_XIV();
7037 SvIVX(dstr) = SvIVX(sstr);
7040 SvANY(dstr) = new_XNV();
7041 SvNVX(dstr) = SvNVX(sstr);
7044 SvANY(dstr) = new_XRV();
7045 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7048 SvANY(dstr) = new_XPV();
7049 SvCUR(dstr) = SvCUR(sstr);
7050 SvLEN(dstr) = SvLEN(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_XPVIV();
7060 SvCUR(dstr) = SvCUR(sstr);
7061 SvLEN(dstr) = SvLEN(sstr);
7062 SvIVX(dstr) = SvIVX(sstr);
7064 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7065 else if (SvPVX(sstr) && SvLEN(sstr))
7066 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7068 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7071 SvANY(dstr) = new_XPVNV();
7072 SvCUR(dstr) = SvCUR(sstr);
7073 SvLEN(dstr) = SvLEN(sstr);
7074 SvIVX(dstr) = SvIVX(sstr);
7075 SvNVX(dstr) = SvNVX(sstr);
7077 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7078 else if (SvPVX(sstr) && SvLEN(sstr))
7079 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7081 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7084 SvANY(dstr) = new_XPVMG();
7085 SvCUR(dstr) = SvCUR(sstr);
7086 SvLEN(dstr) = SvLEN(sstr);
7087 SvIVX(dstr) = SvIVX(sstr);
7088 SvNVX(dstr) = SvNVX(sstr);
7089 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7090 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7092 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7093 else if (SvPVX(sstr) && SvLEN(sstr))
7094 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7096 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7099 SvANY(dstr) = new_XPVBM();
7100 SvCUR(dstr) = SvCUR(sstr);
7101 SvLEN(dstr) = SvLEN(sstr);
7102 SvIVX(dstr) = SvIVX(sstr);
7103 SvNVX(dstr) = SvNVX(sstr);
7104 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7105 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7107 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7108 else if (SvPVX(sstr) && SvLEN(sstr))
7109 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7111 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7112 BmRARE(dstr) = BmRARE(sstr);
7113 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7114 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7117 SvANY(dstr) = new_XPVLV();
7118 SvCUR(dstr) = SvCUR(sstr);
7119 SvLEN(dstr) = SvLEN(sstr);
7120 SvIVX(dstr) = SvIVX(sstr);
7121 SvNVX(dstr) = SvNVX(sstr);
7122 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7123 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7125 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7126 else if (SvPVX(sstr) && SvLEN(sstr))
7127 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7129 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7130 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7131 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7132 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7133 LvTYPE(dstr) = LvTYPE(sstr);
7136 SvANY(dstr) = new_XPVGV();
7137 SvCUR(dstr) = SvCUR(sstr);
7138 SvLEN(dstr) = SvLEN(sstr);
7139 SvIVX(dstr) = SvIVX(sstr);
7140 SvNVX(dstr) = SvNVX(sstr);
7141 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7142 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7144 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7145 else if (SvPVX(sstr) && SvLEN(sstr))
7146 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7148 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7149 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7150 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7151 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7152 GvFLAGS(dstr) = GvFLAGS(sstr);
7153 GvGP(dstr) = gp_dup(GvGP(sstr));
7154 (void)GpREFCNT_inc(GvGP(dstr));
7157 SvANY(dstr) = new_XPVIO();
7158 SvCUR(dstr) = SvCUR(sstr);
7159 SvLEN(dstr) = SvLEN(sstr);
7160 SvIVX(dstr) = SvIVX(sstr);
7161 SvNVX(dstr) = SvNVX(sstr);
7162 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7163 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7165 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7166 else if (SvPVX(sstr) && SvLEN(sstr))
7167 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7169 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7170 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7171 if (IoOFP(sstr) == IoIFP(sstr))
7172 IoOFP(dstr) = IoIFP(dstr);
7174 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7175 /* PL_rsfp_filters entries have fake IoDIRP() */
7176 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7177 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7179 IoDIRP(dstr) = IoDIRP(sstr);
7180 IoLINES(dstr) = IoLINES(sstr);
7181 IoPAGE(dstr) = IoPAGE(sstr);
7182 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7183 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7184 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7185 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7186 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7187 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7188 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7189 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7190 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7191 IoTYPE(dstr) = IoTYPE(sstr);
7192 IoFLAGS(dstr) = IoFLAGS(sstr);
7195 SvANY(dstr) = new_XPVAV();
7196 SvCUR(dstr) = SvCUR(sstr);
7197 SvLEN(dstr) = SvLEN(sstr);
7198 SvIVX(dstr) = SvIVX(sstr);
7199 SvNVX(dstr) = SvNVX(sstr);
7200 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7201 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7202 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7203 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7204 if (AvARRAY((AV*)sstr)) {
7205 SV **dst_ary, **src_ary;
7206 SSize_t items = AvFILLp((AV*)sstr) + 1;
7208 src_ary = AvARRAY((AV*)sstr);
7209 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7210 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7211 SvPVX(dstr) = (char*)dst_ary;
7212 AvALLOC((AV*)dstr) = dst_ary;
7213 if (AvREAL((AV*)sstr)) {
7215 *dst_ary++ = sv_dup_inc(*src_ary++);
7219 *dst_ary++ = sv_dup(*src_ary++);
7221 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7222 while (items-- > 0) {
7223 *dst_ary++ = &PL_sv_undef;
7227 SvPVX(dstr) = Nullch;
7228 AvALLOC((AV*)dstr) = (SV**)NULL;
7232 SvANY(dstr) = new_XPVHV();
7233 SvCUR(dstr) = SvCUR(sstr);
7234 SvLEN(dstr) = SvLEN(sstr);
7235 SvIVX(dstr) = SvIVX(sstr);
7236 SvNVX(dstr) = SvNVX(sstr);
7237 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7238 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7239 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7240 if (HvARRAY((HV*)sstr)) {
7242 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7243 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7244 Newz(0, dxhv->xhv_array,
7245 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7246 while (i <= sxhv->xhv_max) {
7247 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7248 !!HvSHAREKEYS(sstr));
7251 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7254 SvPVX(dstr) = Nullch;
7255 HvEITER((HV*)dstr) = (HE*)NULL;
7257 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7258 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7261 SvANY(dstr) = new_XPVFM();
7262 FmLINES(dstr) = FmLINES(sstr);
7266 SvANY(dstr) = new_XPVCV();
7268 SvCUR(dstr) = SvCUR(sstr);
7269 SvLEN(dstr) = SvLEN(sstr);
7270 SvIVX(dstr) = SvIVX(sstr);
7271 SvNVX(dstr) = SvNVX(sstr);
7272 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7273 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7274 if (SvPVX(sstr) && SvLEN(sstr))
7275 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7277 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7278 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7279 CvSTART(dstr) = CvSTART(sstr);
7280 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7281 CvXSUB(dstr) = CvXSUB(sstr);
7282 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7283 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7284 CvDEPTH(dstr) = CvDEPTH(sstr);
7285 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7286 /* XXX padlists are real, but pretend to be not */
7287 AvREAL_on(CvPADLIST(sstr));
7288 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7289 AvREAL_off(CvPADLIST(sstr));
7290 AvREAL_off(CvPADLIST(dstr));
7293 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7294 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7295 CvFLAGS(dstr) = CvFLAGS(sstr);
7298 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7302 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7309 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7314 return (PERL_CONTEXT*)NULL;
7316 /* look for it in the table first */
7317 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7321 /* create anew and remember what it is */
7322 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7323 ptr_table_store(PL_ptr_table, cxs, ncxs);
7326 PERL_CONTEXT *cx = &cxs[ix];
7327 PERL_CONTEXT *ncx = &ncxs[ix];
7328 ncx->cx_type = cx->cx_type;
7329 if (CxTYPE(cx) == CXt_SUBST) {
7330 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7333 ncx->blk_oldsp = cx->blk_oldsp;
7334 ncx->blk_oldcop = cx->blk_oldcop;
7335 ncx->blk_oldretsp = cx->blk_oldretsp;
7336 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7337 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7338 ncx->blk_oldpm = cx->blk_oldpm;
7339 ncx->blk_gimme = cx->blk_gimme;
7340 switch (CxTYPE(cx)) {
7342 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7343 ? cv_dup_inc(cx->blk_sub.cv)
7344 : cv_dup(cx->blk_sub.cv));
7345 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7346 ? av_dup_inc(cx->blk_sub.argarray)
7348 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7349 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7350 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7351 ncx->blk_sub.lval = cx->blk_sub.lval;
7354 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7355 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7356 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7357 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7358 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7361 ncx->blk_loop.label = cx->blk_loop.label;
7362 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7363 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7364 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7365 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7366 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7367 ? cx->blk_loop.iterdata
7368 : gv_dup((GV*)cx->blk_loop.iterdata));
7369 ncx->blk_loop.oldcurpad
7370 = (SV**)ptr_table_fetch(PL_ptr_table,
7371 cx->blk_loop.oldcurpad);
7372 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7373 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7374 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7375 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7376 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7379 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7380 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7381 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7382 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7395 Perl_si_dup(pTHX_ PERL_SI *si)
7400 return (PERL_SI*)NULL;
7402 /* look for it in the table first */
7403 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7407 /* create anew and remember what it is */
7408 Newz(56, nsi, 1, PERL_SI);
7409 ptr_table_store(PL_ptr_table, si, nsi);
7411 nsi->si_stack = av_dup_inc(si->si_stack);
7412 nsi->si_cxix = si->si_cxix;
7413 nsi->si_cxmax = si->si_cxmax;
7414 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7415 nsi->si_type = si->si_type;
7416 nsi->si_prev = si_dup(si->si_prev);
7417 nsi->si_next = si_dup(si->si_next);
7418 nsi->si_markoff = si->si_markoff;
7423 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7424 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7425 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7426 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7427 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7428 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7429 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7430 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7431 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7432 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7433 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7434 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7437 #define pv_dup_inc(p) SAVEPV(p)
7438 #define pv_dup(p) SAVEPV(p)
7439 #define svp_dup_inc(p,pp) any_dup(p,pp)
7442 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7449 /* look for it in the table first */
7450 ret = ptr_table_fetch(PL_ptr_table, v);
7454 /* see if it is part of the interpreter structure */
7455 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7456 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7464 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7466 ANY *ss = proto_perl->Tsavestack;
7467 I32 ix = proto_perl->Tsavestack_ix;
7468 I32 max = proto_perl->Tsavestack_max;
7481 void (*dptr) (void*);
7482 void (*dxptr) (pTHXo_ void*);
7485 Newz(54, nss, max, ANY);
7491 case SAVEt_ITEM: /* normal string */
7492 sv = (SV*)POPPTR(ss,ix);
7493 TOPPTR(nss,ix) = sv_dup_inc(sv);
7494 sv = (SV*)POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = sv_dup_inc(sv);
7497 case SAVEt_SV: /* scalar reference */
7498 sv = (SV*)POPPTR(ss,ix);
7499 TOPPTR(nss,ix) = sv_dup_inc(sv);
7500 gv = (GV*)POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = gv_dup_inc(gv);
7503 case SAVEt_GENERIC_PVREF: /* generic char* */
7504 c = (char*)POPPTR(ss,ix);
7505 TOPPTR(nss,ix) = pv_dup(c);
7506 ptr = POPPTR(ss,ix);
7507 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7509 case SAVEt_GENERIC_SVREF: /* generic sv */
7510 case SAVEt_SVREF: /* scalar reference */
7511 sv = (SV*)POPPTR(ss,ix);
7512 TOPPTR(nss,ix) = sv_dup_inc(sv);
7513 ptr = POPPTR(ss,ix);
7514 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7516 case SAVEt_AV: /* array reference */
7517 av = (AV*)POPPTR(ss,ix);
7518 TOPPTR(nss,ix) = av_dup_inc(av);
7519 gv = (GV*)POPPTR(ss,ix);
7520 TOPPTR(nss,ix) = gv_dup(gv);
7522 case SAVEt_HV: /* hash reference */
7523 hv = (HV*)POPPTR(ss,ix);
7524 TOPPTR(nss,ix) = hv_dup_inc(hv);
7525 gv = (GV*)POPPTR(ss,ix);
7526 TOPPTR(nss,ix) = gv_dup(gv);
7528 case SAVEt_INT: /* int reference */
7529 ptr = POPPTR(ss,ix);
7530 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7531 intval = (int)POPINT(ss,ix);
7532 TOPINT(nss,ix) = intval;
7534 case SAVEt_LONG: /* long reference */
7535 ptr = POPPTR(ss,ix);
7536 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7537 longval = (long)POPLONG(ss,ix);
7538 TOPLONG(nss,ix) = longval;
7540 case SAVEt_I32: /* I32 reference */
7541 case SAVEt_I16: /* I16 reference */
7542 case SAVEt_I8: /* I8 reference */
7543 ptr = POPPTR(ss,ix);
7544 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7548 case SAVEt_IV: /* IV reference */
7549 ptr = POPPTR(ss,ix);
7550 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7554 case SAVEt_SPTR: /* SV* reference */
7555 ptr = POPPTR(ss,ix);
7556 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7557 sv = (SV*)POPPTR(ss,ix);
7558 TOPPTR(nss,ix) = sv_dup(sv);
7560 case SAVEt_VPTR: /* random* reference */
7561 ptr = POPPTR(ss,ix);
7562 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7563 ptr = POPPTR(ss,ix);
7564 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7566 case SAVEt_PPTR: /* char* reference */
7567 ptr = POPPTR(ss,ix);
7568 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7569 c = (char*)POPPTR(ss,ix);
7570 TOPPTR(nss,ix) = pv_dup(c);
7572 case SAVEt_HPTR: /* HV* reference */
7573 ptr = POPPTR(ss,ix);
7574 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7575 hv = (HV*)POPPTR(ss,ix);
7576 TOPPTR(nss,ix) = hv_dup(hv);
7578 case SAVEt_APTR: /* AV* reference */
7579 ptr = POPPTR(ss,ix);
7580 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7581 av = (AV*)POPPTR(ss,ix);
7582 TOPPTR(nss,ix) = av_dup(av);
7585 gv = (GV*)POPPTR(ss,ix);
7586 TOPPTR(nss,ix) = gv_dup(gv);
7588 case SAVEt_GP: /* scalar reference */
7589 gp = (GP*)POPPTR(ss,ix);
7590 TOPPTR(nss,ix) = gp = gp_dup(gp);
7591 (void)GpREFCNT_inc(gp);
7592 gv = (GV*)POPPTR(ss,ix);
7593 TOPPTR(nss,ix) = gv_dup_inc(c);
7594 c = (char*)POPPTR(ss,ix);
7595 TOPPTR(nss,ix) = pv_dup(c);
7602 sv = (SV*)POPPTR(ss,ix);
7603 TOPPTR(nss,ix) = sv_dup_inc(sv);
7606 ptr = POPPTR(ss,ix);
7607 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7608 /* these are assumed to be refcounted properly */
7609 switch (((OP*)ptr)->op_type) {
7616 TOPPTR(nss,ix) = ptr;
7621 TOPPTR(nss,ix) = Nullop;
7626 TOPPTR(nss,ix) = Nullop;
7629 c = (char*)POPPTR(ss,ix);
7630 TOPPTR(nss,ix) = pv_dup_inc(c);
7633 longval = POPLONG(ss,ix);
7634 TOPLONG(nss,ix) = longval;
7637 hv = (HV*)POPPTR(ss,ix);
7638 TOPPTR(nss,ix) = hv_dup_inc(hv);
7639 c = (char*)POPPTR(ss,ix);
7640 TOPPTR(nss,ix) = pv_dup_inc(c);
7644 case SAVEt_DESTRUCTOR:
7645 ptr = POPPTR(ss,ix);
7646 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7647 dptr = POPDPTR(ss,ix);
7648 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7650 case SAVEt_DESTRUCTOR_X:
7651 ptr = POPPTR(ss,ix);
7652 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7653 dxptr = POPDXPTR(ss,ix);
7654 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7656 case SAVEt_REGCONTEXT:
7662 case SAVEt_STACK_POS: /* Position on Perl stack */
7666 case SAVEt_AELEM: /* array element */
7667 sv = (SV*)POPPTR(ss,ix);
7668 TOPPTR(nss,ix) = sv_dup_inc(sv);
7671 av = (AV*)POPPTR(ss,ix);
7672 TOPPTR(nss,ix) = av_dup_inc(av);
7674 case SAVEt_HELEM: /* hash element */
7675 sv = (SV*)POPPTR(ss,ix);
7676 TOPPTR(nss,ix) = sv_dup_inc(sv);
7677 sv = (SV*)POPPTR(ss,ix);
7678 TOPPTR(nss,ix) = sv_dup_inc(sv);
7679 hv = (HV*)POPPTR(ss,ix);
7680 TOPPTR(nss,ix) = hv_dup_inc(hv);
7683 ptr = POPPTR(ss,ix);
7684 TOPPTR(nss,ix) = ptr;
7691 av = (AV*)POPPTR(ss,ix);
7692 TOPPTR(nss,ix) = av_dup(av);
7695 longval = (long)POPLONG(ss,ix);
7696 TOPLONG(nss,ix) = longval;
7697 ptr = POPPTR(ss,ix);
7698 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7699 sv = (SV*)POPPTR(ss,ix);
7700 TOPPTR(nss,ix) = sv_dup(sv);
7703 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7715 perl_clone(PerlInterpreter *proto_perl, UV flags)
7718 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7721 #ifdef PERL_IMPLICIT_SYS
7722 return perl_clone_using(proto_perl, flags,
7724 proto_perl->IMemShared,
7725 proto_perl->IMemParse,
7735 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7736 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7737 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7738 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7739 struct IPerlDir* ipD, struct IPerlSock* ipS,
7740 struct IPerlProc* ipP)
7742 /* XXX many of the string copies here can be optimized if they're
7743 * constants; they need to be allocated as common memory and just
7744 * their pointers copied. */
7748 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7750 PERL_SET_THX(pPerl);
7751 # else /* !PERL_OBJECT */
7752 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7753 PERL_SET_THX(my_perl);
7756 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7761 # else /* !DEBUGGING */
7762 Zero(my_perl, 1, PerlInterpreter);
7763 # endif /* DEBUGGING */
7767 PL_MemShared = ipMS;
7775 # endif /* PERL_OBJECT */
7776 #else /* !PERL_IMPLICIT_SYS */
7778 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7779 PERL_SET_THX(my_perl);
7782 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7787 # else /* !DEBUGGING */
7788 Zero(my_perl, 1, PerlInterpreter);
7789 # endif /* DEBUGGING */
7790 #endif /* PERL_IMPLICIT_SYS */
7793 PL_xiv_arenaroot = NULL;
7795 PL_xnv_arenaroot = NULL;
7797 PL_xrv_arenaroot = NULL;
7799 PL_xpv_arenaroot = NULL;
7801 PL_xpviv_arenaroot = NULL;
7802 PL_xpviv_root = NULL;
7803 PL_xpvnv_arenaroot = NULL;
7804 PL_xpvnv_root = NULL;
7805 PL_xpvcv_arenaroot = NULL;
7806 PL_xpvcv_root = NULL;
7807 PL_xpvav_arenaroot = NULL;
7808 PL_xpvav_root = NULL;
7809 PL_xpvhv_arenaroot = NULL;
7810 PL_xpvhv_root = NULL;
7811 PL_xpvmg_arenaroot = NULL;
7812 PL_xpvmg_root = NULL;
7813 PL_xpvlv_arenaroot = NULL;
7814 PL_xpvlv_root = NULL;
7815 PL_xpvbm_arenaroot = NULL;
7816 PL_xpvbm_root = NULL;
7817 PL_he_arenaroot = NULL;
7819 PL_nice_chunk = NULL;
7820 PL_nice_chunk_size = 0;
7823 PL_sv_root = Nullsv;
7824 PL_sv_arenaroot = Nullsv;
7826 PL_debug = proto_perl->Idebug;
7828 /* create SV map for pointer relocation */
7829 PL_ptr_table = ptr_table_new();
7831 /* initialize these special pointers as early as possible */
7832 SvANY(&PL_sv_undef) = NULL;
7833 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7834 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7835 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7838 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7840 SvANY(&PL_sv_no) = new_XPVNV();
7842 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7843 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7844 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7845 SvCUR(&PL_sv_no) = 0;
7846 SvLEN(&PL_sv_no) = 1;
7847 SvNVX(&PL_sv_no) = 0;
7848 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7851 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7853 SvANY(&PL_sv_yes) = new_XPVNV();
7855 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7856 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7857 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7858 SvCUR(&PL_sv_yes) = 1;
7859 SvLEN(&PL_sv_yes) = 2;
7860 SvNVX(&PL_sv_yes) = 1;
7861 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7863 /* create shared string table */
7864 PL_strtab = newHV();
7865 HvSHAREKEYS_off(PL_strtab);
7866 hv_ksplit(PL_strtab, 512);
7867 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7869 PL_compiling = proto_perl->Icompiling;
7870 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7871 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7872 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7873 if (!specialWARN(PL_compiling.cop_warnings))
7874 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7875 if (!specialCopIO(PL_compiling.cop_io))
7876 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
7877 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7879 /* pseudo environmental stuff */
7880 PL_origargc = proto_perl->Iorigargc;
7882 New(0, PL_origargv, i+1, char*);
7883 PL_origargv[i] = '\0';
7885 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7887 PL_envgv = gv_dup(proto_perl->Ienvgv);
7888 PL_incgv = gv_dup(proto_perl->Iincgv);
7889 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7890 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7891 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7892 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7895 PL_minus_c = proto_perl->Iminus_c;
7896 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7897 PL_localpatches = proto_perl->Ilocalpatches;
7898 PL_splitstr = proto_perl->Isplitstr;
7899 PL_preprocess = proto_perl->Ipreprocess;
7900 PL_minus_n = proto_perl->Iminus_n;
7901 PL_minus_p = proto_perl->Iminus_p;
7902 PL_minus_l = proto_perl->Iminus_l;
7903 PL_minus_a = proto_perl->Iminus_a;
7904 PL_minus_F = proto_perl->Iminus_F;
7905 PL_doswitches = proto_perl->Idoswitches;
7906 PL_dowarn = proto_perl->Idowarn;
7907 PL_doextract = proto_perl->Idoextract;
7908 PL_sawampersand = proto_perl->Isawampersand;
7909 PL_unsafe = proto_perl->Iunsafe;
7910 PL_inplace = SAVEPV(proto_perl->Iinplace);
7911 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7912 PL_perldb = proto_perl->Iperldb;
7913 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7915 /* magical thingies */
7916 /* XXX time(&PL_basetime) when asked for? */
7917 PL_basetime = proto_perl->Ibasetime;
7918 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7920 PL_maxsysfd = proto_perl->Imaxsysfd;
7921 PL_multiline = proto_perl->Imultiline;
7922 PL_statusvalue = proto_perl->Istatusvalue;
7924 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7927 /* shortcuts to various I/O objects */
7928 PL_stdingv = gv_dup(proto_perl->Istdingv);
7929 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7930 PL_defgv = gv_dup(proto_perl->Idefgv);
7931 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7932 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7933 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7935 /* shortcuts to regexp stuff */
7936 PL_replgv = gv_dup(proto_perl->Ireplgv);
7938 /* shortcuts to misc objects */
7939 PL_errgv = gv_dup(proto_perl->Ierrgv);
7941 /* shortcuts to debugging objects */
7942 PL_DBgv = gv_dup(proto_perl->IDBgv);
7943 PL_DBline = gv_dup(proto_perl->IDBline);
7944 PL_DBsub = gv_dup(proto_perl->IDBsub);
7945 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7946 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7947 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7948 PL_lineary = av_dup(proto_perl->Ilineary);
7949 PL_dbargs = av_dup(proto_perl->Idbargs);
7952 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7953 PL_curstash = hv_dup(proto_perl->Tcurstash);
7954 PL_debstash = hv_dup(proto_perl->Idebstash);
7955 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7956 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7958 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7959 PL_endav = av_dup_inc(proto_perl->Iendav);
7960 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7961 PL_initav = av_dup_inc(proto_perl->Iinitav);
7963 PL_sub_generation = proto_perl->Isub_generation;
7965 /* funky return mechanisms */
7966 PL_forkprocess = proto_perl->Iforkprocess;
7968 /* subprocess state */
7969 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7971 /* internal state */
7972 PL_tainting = proto_perl->Itainting;
7973 PL_maxo = proto_perl->Imaxo;
7974 if (proto_perl->Iop_mask)
7975 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7977 PL_op_mask = Nullch;
7979 /* current interpreter roots */
7980 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7981 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7982 PL_main_start = proto_perl->Imain_start;
7983 PL_eval_root = proto_perl->Ieval_root;
7984 PL_eval_start = proto_perl->Ieval_start;
7986 /* runtime control stuff */
7987 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7988 PL_copline = proto_perl->Icopline;
7990 PL_filemode = proto_perl->Ifilemode;
7991 PL_lastfd = proto_perl->Ilastfd;
7992 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7995 PL_gensym = proto_perl->Igensym;
7996 PL_preambled = proto_perl->Ipreambled;
7997 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7998 PL_laststatval = proto_perl->Ilaststatval;
7999 PL_laststype = proto_perl->Ilaststype;
8000 PL_mess_sv = Nullsv;
8002 PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv);
8003 PL_ofmt = SAVEPV(proto_perl->Iofmt);
8005 /* interpreter atexit processing */
8006 PL_exitlistlen = proto_perl->Iexitlistlen;
8007 if (PL_exitlistlen) {
8008 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8009 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8012 PL_exitlist = (PerlExitListEntry*)NULL;
8013 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
8015 PL_profiledata = NULL;
8016 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
8017 /* PL_rsfp_filters entries have fake IoDIRP() */
8018 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
8020 PL_compcv = cv_dup(proto_perl->Icompcv);
8021 PL_comppad = av_dup(proto_perl->Icomppad);
8022 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
8023 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
8024 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8025 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8026 proto_perl->Tcurpad);
8028 #ifdef HAVE_INTERP_INTERN
8029 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8032 /* more statics moved here */
8033 PL_generation = proto_perl->Igeneration;
8034 PL_DBcv = cv_dup(proto_perl->IDBcv);
8036 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8037 PL_in_clean_all = proto_perl->Iin_clean_all;
8039 PL_uid = proto_perl->Iuid;
8040 PL_euid = proto_perl->Ieuid;
8041 PL_gid = proto_perl->Igid;
8042 PL_egid = proto_perl->Iegid;
8043 PL_nomemok = proto_perl->Inomemok;
8044 PL_an = proto_perl->Ian;
8045 PL_cop_seqmax = proto_perl->Icop_seqmax;
8046 PL_op_seqmax = proto_perl->Iop_seqmax;
8047 PL_evalseq = proto_perl->Ievalseq;
8048 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8049 PL_origalen = proto_perl->Iorigalen;
8050 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8051 PL_osname = SAVEPV(proto_perl->Iosname);
8052 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8053 PL_sighandlerp = proto_perl->Isighandlerp;
8056 PL_runops = proto_perl->Irunops;
8058 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8061 PL_cshlen = proto_perl->Icshlen;
8062 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8065 PL_lex_state = proto_perl->Ilex_state;
8066 PL_lex_defer = proto_perl->Ilex_defer;
8067 PL_lex_expect = proto_perl->Ilex_expect;
8068 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8069 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8070 PL_lex_starts = proto_perl->Ilex_starts;
8071 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8072 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8073 PL_lex_op = proto_perl->Ilex_op;
8074 PL_lex_inpat = proto_perl->Ilex_inpat;
8075 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8076 PL_lex_brackets = proto_perl->Ilex_brackets;
8077 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8078 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8079 PL_lex_casemods = proto_perl->Ilex_casemods;
8080 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8081 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8083 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8084 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8085 PL_nexttoke = proto_perl->Inexttoke;
8087 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8088 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8089 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8090 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8091 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8092 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8093 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8094 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8095 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8096 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8097 PL_pending_ident = proto_perl->Ipending_ident;
8098 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8100 PL_expect = proto_perl->Iexpect;
8102 PL_multi_start = proto_perl->Imulti_start;
8103 PL_multi_end = proto_perl->Imulti_end;
8104 PL_multi_open = proto_perl->Imulti_open;
8105 PL_multi_close = proto_perl->Imulti_close;
8107 PL_error_count = proto_perl->Ierror_count;
8108 PL_subline = proto_perl->Isubline;
8109 PL_subname = sv_dup_inc(proto_perl->Isubname);
8111 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8112 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8113 PL_padix = proto_perl->Ipadix;
8114 PL_padix_floor = proto_perl->Ipadix_floor;
8115 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8117 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8118 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8119 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8120 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8121 PL_last_lop_op = proto_perl->Ilast_lop_op;
8122 PL_in_my = proto_perl->Iin_my;
8123 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8125 PL_cryptseen = proto_perl->Icryptseen;
8128 PL_hints = proto_perl->Ihints;
8130 PL_amagic_generation = proto_perl->Iamagic_generation;
8132 #ifdef USE_LOCALE_COLLATE
8133 PL_collation_ix = proto_perl->Icollation_ix;
8134 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8135 PL_collation_standard = proto_perl->Icollation_standard;
8136 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8137 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8138 #endif /* USE_LOCALE_COLLATE */
8140 #ifdef USE_LOCALE_NUMERIC
8141 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8142 PL_numeric_standard = proto_perl->Inumeric_standard;
8143 PL_numeric_local = proto_perl->Inumeric_local;
8144 PL_numeric_radix = proto_perl->Inumeric_radix;
8145 #endif /* !USE_LOCALE_NUMERIC */
8147 /* utf8 character classes */
8148 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8149 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8150 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8151 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8152 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8153 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8154 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8155 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8156 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8157 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8158 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8159 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8160 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8161 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8162 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8163 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8164 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8167 PL_last_swash_hv = Nullhv; /* reinits on demand */
8168 PL_last_swash_klen = 0;
8169 PL_last_swash_key[0]= '\0';
8170 PL_last_swash_tmps = (U8*)NULL;
8171 PL_last_swash_slen = 0;
8173 /* perly.c globals */
8174 PL_yydebug = proto_perl->Iyydebug;
8175 PL_yynerrs = proto_perl->Iyynerrs;
8176 PL_yyerrflag = proto_perl->Iyyerrflag;
8177 PL_yychar = proto_perl->Iyychar;
8178 PL_yyval = proto_perl->Iyyval;
8179 PL_yylval = proto_perl->Iyylval;
8181 PL_glob_index = proto_perl->Iglob_index;
8182 PL_srand_called = proto_perl->Isrand_called;
8183 PL_uudmap['M'] = 0; /* reinits on demand */
8184 PL_bitcount = Nullch; /* reinits on demand */
8186 if (proto_perl->Ipsig_ptr) {
8187 int sig_num[] = { SIG_NUM };
8188 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8189 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8190 for (i = 1; PL_sig_name[i]; i++) {
8191 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8192 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8196 PL_psig_ptr = (SV**)NULL;
8197 PL_psig_name = (SV**)NULL;
8200 /* thrdvar.h stuff */
8203 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8204 PL_tmps_ix = proto_perl->Ttmps_ix;
8205 PL_tmps_max = proto_perl->Ttmps_max;
8206 PL_tmps_floor = proto_perl->Ttmps_floor;
8207 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8209 while (i <= PL_tmps_ix) {
8210 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8214 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8215 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8216 Newz(54, PL_markstack, i, I32);
8217 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8218 - proto_perl->Tmarkstack);
8219 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8220 - proto_perl->Tmarkstack);
8221 Copy(proto_perl->Tmarkstack, PL_markstack,
8222 PL_markstack_ptr - PL_markstack + 1, I32);
8224 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8225 * NOTE: unlike the others! */
8226 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8227 PL_scopestack_max = proto_perl->Tscopestack_max;
8228 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8229 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8231 /* next push_return() sets PL_retstack[PL_retstack_ix]
8232 * NOTE: unlike the others! */
8233 PL_retstack_ix = proto_perl->Tretstack_ix;
8234 PL_retstack_max = proto_perl->Tretstack_max;
8235 Newz(54, PL_retstack, PL_retstack_max, OP*);
8236 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8238 /* NOTE: si_dup() looks at PL_markstack */
8239 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8241 /* PL_curstack = PL_curstackinfo->si_stack; */
8242 PL_curstack = av_dup(proto_perl->Tcurstack);
8243 PL_mainstack = av_dup(proto_perl->Tmainstack);
8245 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8246 PL_stack_base = AvARRAY(PL_curstack);
8247 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8248 - proto_perl->Tstack_base);
8249 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8251 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8252 * NOTE: unlike the others! */
8253 PL_savestack_ix = proto_perl->Tsavestack_ix;
8254 PL_savestack_max = proto_perl->Tsavestack_max;
8255 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8256 PL_savestack = ss_dup(proto_perl);
8260 ENTER; /* perl_destruct() wants to LEAVE; */
8263 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8264 PL_top_env = &PL_start_env;
8266 PL_op = proto_perl->Top;
8269 PL_Xpv = (XPV*)NULL;
8270 PL_na = proto_perl->Tna;
8272 PL_statbuf = proto_perl->Tstatbuf;
8273 PL_statcache = proto_perl->Tstatcache;
8274 PL_statgv = gv_dup(proto_perl->Tstatgv);
8275 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8277 PL_timesbuf = proto_perl->Ttimesbuf;
8280 PL_tainted = proto_perl->Ttainted;
8281 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8282 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8283 PL_rs = sv_dup_inc(proto_perl->Trs);
8284 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8285 PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv);
8286 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8287 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8288 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8289 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8290 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8292 PL_restartop = proto_perl->Trestartop;
8293 PL_in_eval = proto_perl->Tin_eval;
8294 PL_delaymagic = proto_perl->Tdelaymagic;
8295 PL_dirty = proto_perl->Tdirty;
8296 PL_localizing = proto_perl->Tlocalizing;
8298 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8299 PL_protect = proto_perl->Tprotect;
8301 PL_errors = sv_dup_inc(proto_perl->Terrors);
8302 PL_av_fetch_sv = Nullsv;
8303 PL_hv_fetch_sv = Nullsv;
8304 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8305 PL_modcount = proto_perl->Tmodcount;
8306 PL_lastgotoprobe = Nullop;
8307 PL_dumpindent = proto_perl->Tdumpindent;
8309 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8310 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8311 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8312 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8313 PL_sortcxix = proto_perl->Tsortcxix;
8314 PL_efloatbuf = Nullch; /* reinits on demand */
8315 PL_efloatsize = 0; /* reinits on demand */
8319 PL_screamfirst = NULL;
8320 PL_screamnext = NULL;
8321 PL_maxscream = -1; /* reinits on demand */
8322 PL_lastscream = Nullsv;
8324 PL_watchaddr = NULL;
8325 PL_watchok = Nullch;
8327 PL_regdummy = proto_perl->Tregdummy;
8328 PL_regcomp_parse = Nullch;
8329 PL_regxend = Nullch;
8330 PL_regcode = (regnode*)NULL;
8333 PL_regprecomp = Nullch;
8338 PL_seen_zerolen = 0;
8340 PL_regcomp_rx = (regexp*)NULL;
8342 PL_colorset = 0; /* reinits PL_colors[] */
8343 /*PL_colors[6] = {0,0,0,0,0,0};*/
8344 PL_reg_whilem_seen = 0;
8345 PL_reginput = Nullch;
8348 PL_regstartp = (I32*)NULL;
8349 PL_regendp = (I32*)NULL;
8350 PL_reglastparen = (U32*)NULL;
8351 PL_regtill = Nullch;
8353 PL_reg_start_tmp = (char**)NULL;
8354 PL_reg_start_tmpl = 0;
8355 PL_regdata = (struct reg_data*)NULL;
8358 PL_reg_eval_set = 0;
8360 PL_regprogram = (regnode*)NULL;
8362 PL_regcc = (CURCUR*)NULL;
8363 PL_reg_call_cc = (struct re_cc_state*)NULL;
8364 PL_reg_re = (regexp*)NULL;
8365 PL_reg_ganch = Nullch;
8367 PL_reg_magic = (MAGIC*)NULL;
8369 PL_reg_oldcurpm = (PMOP*)NULL;
8370 PL_reg_curpm = (PMOP*)NULL;
8371 PL_reg_oldsaved = Nullch;
8372 PL_reg_oldsavedlen = 0;
8374 PL_reg_leftiter = 0;
8375 PL_reg_poscache = Nullch;
8376 PL_reg_poscache_size= 0;
8378 /* RE engine - function pointers */
8379 PL_regcompp = proto_perl->Tregcompp;
8380 PL_regexecp = proto_perl->Tregexecp;
8381 PL_regint_start = proto_perl->Tregint_start;
8382 PL_regint_string = proto_perl->Tregint_string;
8383 PL_regfree = proto_perl->Tregfree;
8385 PL_reginterp_cnt = 0;
8386 PL_reg_starttry = 0;
8389 return (PerlInterpreter*)pPerl;
8395 #else /* !USE_ITHREADS */
8401 #endif /* USE_ITHREADS */
8404 do_report_used(pTHXo_ SV *sv)
8406 if (SvTYPE(sv) != SVTYPEMASK) {
8407 PerlIO_printf(Perl_debug_log, "****\n");
8413 do_clean_objs(pTHXo_ SV *sv)
8417 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8418 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8419 if (SvWEAKREF(sv)) {
8430 /* XXX Might want to check arrays, etc. */
8433 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8435 do_clean_named_objs(pTHXo_ SV *sv)
8437 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8438 if ( SvOBJECT(GvSV(sv)) ||
8439 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8440 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8441 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8442 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8444 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8452 do_clean_all(pTHXo_ SV *sv)
8454 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8455 SvFLAGS(sv) |= SVf_BREAK;