3 * Copyright (c) 1991-2001, 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); \
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)
1323 /* With these two if statements:
1324 u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865
1327 u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865
1329 If you wish to remove them, please benchmark to see what the effect is
1331 if (u <= (UV)IV_MAX) {
1332 sv_setiv(sv, (IV)u);
1341 =for apidoc sv_setuv_mg
1343 Like C<sv_setuv>, but also handles 'set' magic.
1349 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1351 /* With these two if statements:
1352 u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865
1355 u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865
1357 If you wish to remove them, please benchmark to see what the effect is
1359 if (u <= (UV)IV_MAX) {
1360 sv_setiv(sv, (IV)u);
1370 =for apidoc sv_setnv
1372 Copies a double into the given SV. Does not handle 'set' magic. See
1379 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1381 SV_CHECK_THINKFIRST(sv);
1382 switch (SvTYPE(sv)) {
1385 sv_upgrade(sv, SVt_NV);
1390 sv_upgrade(sv, SVt_PVNV);
1399 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1400 PL_op_name[PL_op->op_type]);
1403 (void)SvNOK_only(sv); /* validate number */
1408 =for apidoc sv_setnv_mg
1410 Like C<sv_setnv>, but also handles 'set' magic.
1416 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1423 S_not_a_number(pTHX_ SV *sv)
1428 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1429 /* each *s can expand to 4 chars + "...\0",
1430 i.e. need room for 8 chars */
1432 for (s = SvPVX(sv); *s && d < limit; s++) {
1434 if (ch & 128 && !isPRINT_LC(ch)) {
1443 else if (ch == '\r') {
1447 else if (ch == '\f') {
1451 else if (ch == '\\') {
1455 else if (isPRINT_LC(ch))
1470 Perl_warner(aTHX_ WARN_NUMERIC,
1471 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1472 PL_op_desc[PL_op->op_type]);
1474 Perl_warner(aTHX_ WARN_NUMERIC,
1475 "Argument \"%s\" isn't numeric", tmpbuf);
1478 /* the number can be converted to integer with atol() or atoll() although */
1479 #define IS_NUMBER_TO_INT_BY_ATOL 0x01 /* integer (may have decimals) */
1480 #define IS_NUMBER_TO_INT_BY_STRTOL 0x02 /* it may exceed IV_MAX */
1481 #define IS_NUMBER_TO_INT_BY_ATOF 0x04 /* seen something like 123e4 */
1482 #define IS_NUMBER_LONGER_THAN_IV_MAX 0x08 /* more digits than IV_MAX */
1483 #define IS_NUMBER_AS_LONG_AS_IV_MAX 0x10 /* may(be not) larger than IV_MAX */
1484 #define IS_NUMBER_NOT_INT 0x20 /* seen a decimal point or e */
1485 #define IS_NUMBER_NEG 0x40 /* seen a leading - */
1486 #define IS_NUMBER_INFINITY 0x80 /* /^\s*-?Infinity\s*$/i */
1488 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1489 until proven guilty, assume that things are not that bad... */
1491 /* As 64 bit platforms often have an NV that doesn't preserve all bits of
1492 an IV (an assumption perl has been based on to date) it becomes necessary
1493 to remove the assumption that the NV always carries enough precision to
1494 recreate the IV whenever needed, and that the NV is the canonical form.
1495 Instead, IV/UV and NV need to be given equal rights. So as to not lose
1496 precision as an side effect of conversion (which would lead to insanity
1497 and the dragon(s) in t/op/numconvert.t getting very angry) the intent is
1498 1) to distinguish between IV/UV/NV slots that have cached a valid
1499 conversion where precision was lost and IV/UV/NV slots that have a
1500 valid conversion which has lost no precision
1501 2) to ensure that if a numeric conversion to one form is request that
1502 would lose precision, the precise conversion (or differently
1503 imprecise conversion) is also performed and cached, to prevent
1504 requests for different numeric formats on the same SV causing
1505 lossy conversion chains. (lossless conversion chains are perfectly
1510 SvIOKp is true if the IV slot contains a valid value
1511 SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true)
1512 SvNOKp is true if the NV slot contains a valid value
1513 SvNOK is true only if the NV value is accurate
1516 while converting from PV to NV check to see if converting that NV to an
1517 IV(or UV) would lose accuracy over a direct conversion from PV to
1518 IV(or UV). If it would, cache both conversions, return NV, but mark
1519 SV as IOK NOKp (ie not NOK).
1521 while converting from PV to IV check to see if converting that IV to an
1522 NV would lose accuracy over a direct conversion from PV to NV. If it
1523 would, cache both conversions, flag similarly.
1525 Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite
1526 correctly because if IV & NV were set NV *always* overruled.
1527 Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flags meaning
1528 changes - now IV and NV together means that the two are interchangeable
1529 SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX;
1531 The benefit of this is operations such as pp_add know that if SvIOK is
1532 true for both left and right operands, then integer addition can be
1533 used instead of floating point. (for cases where the result won't
1534 overflow) Before, floating point was always used, which could lead to
1535 loss of precision compared with integer addition.
1537 * making IV and NV equal status should make maths accurate on 64 bit
1539 * may speed up maths somewhat if pp_add and friends start to use
1540 integers when possible instead of fp. (hopefully the overhead in
1541 looking for SvIOK and checking for overflow will not outweigh the
1542 fp to integer speedup)
1543 * will slow down integer operations (callers of SvIV) on "inaccurate"
1544 values, as the change from SvIOK to SvIOKp will cause a call into
1545 sv_2iv each time rather than a macro access direct to the IV slot
1546 * should speed up number->string conversion on integers as IV is
1547 favoured when IV and NV equally accurate
1549 ####################################################################
1550 You had better be using SvIOK_notUV if you want an IV for arithmetic
1551 SvIOK is true if (IV or UV), so you might be getting (IV)SvUV
1552 SvUOK is true iff UV.
1553 ####################################################################
1555 Your mileage will vary depending your CPUs relative fp to integer
1559 #ifndef NV_PRESERVES_UV
1560 #define IS_NUMBER_UNDERFLOW_IV 1
1561 #define IS_NUMBER_UNDERFLOW_UV 2
1562 #define IS_NUMBER_IV_AND_UV 2
1563 #define IS_NUMBER_OVERFLOW_IV 4
1564 #define IS_NUMBER_OVERFLOW_UV 5
1565 /* Hopefully your optimiser will consider inlining these two functions. */
1567 S_sv_2inuv_non_preserve (pTHX_ register SV *sv, I32 numtype) {
1568 NV nv = SvNVX(sv); /* Code simpler and had compiler problems if */
1569 UV nv_as_uv = U_V(nv); /* these are not in simple variables. */
1570 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2inuv_non '%s', IV=0x%"UVxf" NV=%g inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), nv, (UV)numtype));
1571 if (nv_as_uv <= (UV)IV_MAX) {
1572 (void)SvIOKp_on(sv);
1573 (void)SvNOKp_on(sv);
1574 /* Within suitable range to fit in an IV, atol won't overflow */
1575 /* XXX quite sure? Is that your final answer? not really, I'm
1576 trusting that nv_as_uv to round down if NV is (IV_MAX + 1) */
1577 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1578 if (numtype & IS_NUMBER_NOT_INT) {
1579 /* I believe that even if the original PV had decimals, they
1580 are lost beyond the limit of the FP precision.
1581 However, neither is canonical, so both only get p flags.
1583 /* Both already have p flags, so do nothing */
1584 } else if (SvIVX(sv) == I_V(nv)) {
1589 /* It had no "." so it must be integer. assert (get in here from
1590 sv_2iv and sv_2uv only for ndef HAS_STRTOL and
1591 IS_NUMBER_AS_LONG_AS_IV_MAX) or my logic is faulty and all
1592 conversion routines need audit. */
1594 return nv < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV;
1596 /* between IV_MAX and NV(UV_MAX). Could be slightly> UV_MAX */
1597 (void)SvIOKp_on(sv);
1598 (void)SvNOKp_on(sv);
1601 int save_errno = errno;
1603 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1605 if (numtype & IS_NUMBER_NOT_INT) {
1606 /* UV and NV both imprecise. */
1608 } else if (SvUVX(sv) == nv_as_uv && SvUVX(sv) != UV_MAX) {
1617 return IS_NUMBER_OVERFLOW_IV;
1621 /* Must have just overflowed UV, but not enough that an NV could spot
1623 return IS_NUMBER_OVERFLOW_UV;
1626 /* We've just lost integer precision, nothing we could do. */
1627 SvUVX(sv) = nv_as_uv;
1628 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2niuv_non UV? '%s', UV=0x%"UVxf" NV=%g U_V(NV)=0x%"UVxf" inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), nv, nv_as_uv, (UV)numtype));
1629 /* UV and NV slots equally valid only if we have casting symmetry. */
1630 if (numtype & IS_NUMBER_NOT_INT) {
1632 } else if (SvUVX(sv) == nv_as_uv && SvUVX(sv) != UV_MAX) {
1633 /* UV_MAX can cast up to NV (UV_MAX+1), that NV casts down to UV_MAX
1634 UV_MAX ought to be 0xFF...FFF which won't preserve (We only
1635 get to this point if NVs don't preserve UVs) */
1640 /* As above, I believe UV at least as good as NV */
1643 #endif /* HAS_STRTOUL */
1644 return IS_NUMBER_OVERFLOW_IV;
1647 /* For sv_2nv these three cases are "SvNOK and don't bother casting" */
1649 S_sv_2iuv_non_preserve (pTHX_ register SV *sv, I32 numtype)
1651 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2iuv_non '%s', IV=0x%"UVxf" NV=%g inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), SvNVX(sv), (UV)numtype));
1652 if (SvNVX(sv) < (NV)IV_MIN) {
1653 (void)SvIOKp_on(sv);
1656 return IS_NUMBER_UNDERFLOW_IV;
1658 if (SvNVX(sv) > (NV)UV_MAX) {
1659 (void)SvIOKp_on(sv);
1663 return IS_NUMBER_OVERFLOW_UV;
1665 if (!(numtype & (IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_TO_INT_BY_STRTOL))) {
1666 (void)SvIOKp_on(sv);
1668 /* Can't use strtol etc to convert this string */
1669 if (SvNVX(sv) <= (UV)IV_MAX) {
1670 SvIVX(sv) = I_V(SvNVX(sv));
1671 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
1672 SvIOK_on(sv); /* Integer is precise. NOK, IOK */
1674 /* Integer is imprecise. NOK, IOKp */
1676 return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV;
1679 SvUVX(sv) = U_V(SvNVX(sv));
1680 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
1681 if (SvUVX(sv) == UV_MAX) {
1682 /* As we know that NVs don't preserve UVs, UV_MAX cannot
1683 possibly be preserved by NV. Hence, it must be overflow.
1685 return IS_NUMBER_OVERFLOW_UV;
1687 SvIOK_on(sv); /* Integer is precise. NOK, UOK */
1689 /* Integer is imprecise. NOK, IOKp */
1691 return IS_NUMBER_OVERFLOW_IV;
1693 return S_sv_2inuv_non_preserve(aTHX_ sv, numtype);
1695 #endif /* NV_PRESERVES_UV*/
1698 Perl_sv_2iv(pTHX_ register SV *sv)
1702 if (SvGMAGICAL(sv)) {
1707 return I_V(SvNVX(sv));
1709 if (SvPOKp(sv) && SvLEN(sv))
1712 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1713 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1719 if (SvTHINKFIRST(sv)) {
1722 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1723 (SvRV(tmpstr) != SvRV(sv)))
1724 return SvIV(tmpstr);
1725 return PTR2IV(SvRV(sv));
1727 if (SvREADONLY(sv) && SvFAKE(sv)) {
1728 sv_force_normal(sv);
1730 if (SvREADONLY(sv) && !SvOK(sv)) {
1731 if (ckWARN(WARN_UNINITIALIZED))
1738 return (IV)(SvUVX(sv));
1745 /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv
1746 * without also getting a cached IV/UV from it at the same time
1747 * (ie PV->NV conversion should detect loss of accuracy and cache
1748 * IV or UV at same time to avoid this. NWC */
1750 if (SvTYPE(sv) == SVt_NV)
1751 sv_upgrade(sv, SVt_PVNV);
1753 (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */
1754 /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost
1755 certainly cast into the IV range at IV_MAX, whereas the correct
1756 answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary
1758 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
1759 SvIVX(sv) = I_V(SvNVX(sv));
1760 if (SvNVX(sv) == (NV) SvIVX(sv)
1761 #ifndef NV_PRESERVES_UV
1762 && (((UV)1 << NV_PRESERVES_UV_BITS) >
1763 (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv)))
1764 /* Don't flag it as "accurately an integer" if the number
1765 came from a (by definition imprecise) NV operation, and
1766 we're outside the range of NV integer precision */
1769 SvIOK_on(sv); /* Can this go wrong with rounding? NWC */
1770 DEBUG_c(PerlIO_printf(Perl_debug_log,
1771 "0x%"UVxf" iv(%g => %"IVdf") (precise)\n",
1777 /* IV not precise. No need to convert from PV, as NV
1778 conversion would already have cached IV if it detected
1779 that PV->IV would be better than PV->NV->IV
1780 flags already correct - don't set public IOK. */
1781 DEBUG_c(PerlIO_printf(Perl_debug_log,
1782 "0x%"UVxf" iv(%g => %"IVdf") (imprecise)\n",
1787 /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN,
1788 but the cast (NV)IV_MIN rounds to a the value less (more
1789 negative) than IV_MIN which happens to be equal to SvNVX ??
1790 Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and
1791 NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and
1792 (NV)UVX == NVX are both true, but the values differ. :-(
1793 Hopefully for 2s complement IV_MIN is something like
1794 0x8000000000000000 which will be exact. NWC */
1797 SvUVX(sv) = U_V(SvNVX(sv));
1799 (SvNVX(sv) == (NV) SvUVX(sv))
1800 #ifndef NV_PRESERVES_UV
1801 /* Make sure it's not 0xFFFFFFFFFFFFFFFF */
1802 /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */
1803 && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv))
1804 /* Don't flag it as "accurately an integer" if the number
1805 came from a (by definition imprecise) NV operation, and
1806 we're outside the range of NV integer precision */
1812 DEBUG_c(PerlIO_printf(Perl_debug_log,
1813 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1817 return (IV)SvUVX(sv);
1820 else if (SvPOKp(sv) && SvLEN(sv)) {
1821 I32 numtype = looks_like_number(sv);
1823 /* We want to avoid a possible problem when we cache an IV which
1824 may be later translated to an NV, and the resulting NV is not
1825 the translation of the initial data.
1827 This means that if we cache such an IV, we need to cache the
1828 NV as well. Moreover, we trade speed for space, and do not
1829 cache the NV if we are sure it's not needed.
1832 if ((numtype & ~IS_NUMBER_NEG) == IS_NUMBER_TO_INT_BY_ATOL) {
1833 /* The NV may be reconstructed from IV - safe to cache IV,
1834 which may be calculated by atol(). */
1835 if (SvTYPE(sv) < SVt_PVIV)
1836 sv_upgrade(sv, SVt_PVIV);
1838 SvIVX(sv) = Atol(SvPVX(sv));
1842 int save_errno = errno;
1843 /* Is it an integer that we could convert with strtol?
1844 So try it, and if it doesn't set errno then it's pukka.
1845 This should be faster than going atof and then thinking. */
1846 if (((numtype & (IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_NOT_INT))
1847 == IS_NUMBER_TO_INT_BY_STRTOL)
1848 /* && is a sequence point. Without it not sure if I'm trying
1849 to do too much between sequence points and hence going
1851 && ((errno = 0), 1) /* , 1 so always true */
1852 && ((i = Strtol(SvPVX(sv), Null(char**), 10)), 1)
1854 if (SvTYPE(sv) < SVt_PVIV)
1855 sv_upgrade(sv, SVt_PVIV);
1864 /* Hopefully trace flow will optimise this away where possible
1868 /* It wasn't an integer, or it overflowed, or we don't have
1869 strtol. Do things the slow way - check if it's a UV etc. */
1870 d = Atof(SvPVX(sv));
1872 if (SvTYPE(sv) < SVt_PVNV)
1873 sv_upgrade(sv, SVt_PVNV);
1876 if (! numtype && ckWARN(WARN_NUMERIC))
1879 #if defined(USE_LONG_DOUBLE)
1880 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n",
1881 PTR2UV(sv), SvNVX(sv)));
1883 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%g)\n",
1884 PTR2UV(sv), SvNVX(sv)));
1888 #ifdef NV_PRESERVES_UV
1889 (void)SvIOKp_on(sv);
1891 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
1892 SvIVX(sv) = I_V(SvNVX(sv));
1893 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
1896 /* Integer is imprecise. NOK, IOKp */
1898 /* UV will not work better than IV */
1900 if (SvNVX(sv) > (NV)UV_MAX) {
1902 /* Integer is inaccurate. NOK, IOKp, is UV */
1906 SvUVX(sv) = U_V(SvNVX(sv));
1907 /* 0xFFFFFFFFFFFFFFFF not an issue in here */
1908 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
1912 /* Integer is imprecise. NOK, IOKp, is UV */
1918 #else /* NV_PRESERVES_UV */
1919 if (((UV)1 << NV_PRESERVES_UV_BITS) >
1920 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) {
1921 /* Small enough to preserve all bits. */
1922 (void)SvIOKp_on(sv);
1924 SvIVX(sv) = I_V(SvNVX(sv));
1925 if ((NV)(SvIVX(sv)) == SvNVX(sv))
1927 /* Assumption: first non-preserved integer is < IV_MAX,
1928 this NV is in the preserved range, therefore: */
1929 if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))
1931 Perl_croak(aTHX_ "sv_2iv assumed (U_V(fabs(SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%g U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX);
1933 } else if (sv_2iuv_non_preserve (sv, numtype)
1934 >= IS_NUMBER_OVERFLOW_IV)
1936 #endif /* NV_PRESERVES_UV */
1940 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1942 if (SvTYPE(sv) < SVt_IV)
1943 /* Typically the caller expects that sv_any is not NULL now. */
1944 sv_upgrade(sv, SVt_IV);
1947 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1948 PTR2UV(sv),SvIVX(sv)));
1949 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1953 Perl_sv_2uv(pTHX_ register SV *sv)
1957 if (SvGMAGICAL(sv)) {
1962 return U_V(SvNVX(sv));
1963 if (SvPOKp(sv) && SvLEN(sv))
1966 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1967 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1973 if (SvTHINKFIRST(sv)) {
1976 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1977 (SvRV(tmpstr) != SvRV(sv)))
1978 return SvUV(tmpstr);
1979 return PTR2UV(SvRV(sv));
1981 if (SvREADONLY(sv) && SvFAKE(sv)) {
1982 sv_force_normal(sv);
1984 if (SvREADONLY(sv) && !SvOK(sv)) {
1985 if (ckWARN(WARN_UNINITIALIZED))
1995 return (UV)SvIVX(sv);
1999 /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv
2000 * without also getting a cached IV/UV from it at the same time
2001 * (ie PV->NV conversion should detect loss of accuracy and cache
2002 * IV or UV at same time to avoid this. */
2003 /* IV-over-UV optimisation - choose to cache IV if possible */
2005 if (SvTYPE(sv) == SVt_NV)
2006 sv_upgrade(sv, SVt_PVNV);
2008 (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */
2009 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
2010 SvIVX(sv) = I_V(SvNVX(sv));
2011 if (SvNVX(sv) == (NV) SvIVX(sv)
2012 #ifndef NV_PRESERVES_UV
2013 && (((UV)1 << NV_PRESERVES_UV_BITS) >
2014 (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv)))
2015 /* Don't flag it as "accurately an integer" if the number
2016 came from a (by definition imprecise) NV operation, and
2017 we're outside the range of NV integer precision */
2020 SvIOK_on(sv); /* Can this go wrong with rounding? NWC */
2021 DEBUG_c(PerlIO_printf(Perl_debug_log,
2022 "0x%"UVxf" uv(%g => %"IVdf") (precise)\n",
2028 /* IV not precise. No need to convert from PV, as NV
2029 conversion would already have cached IV if it detected
2030 that PV->IV would be better than PV->NV->IV
2031 flags already correct - don't set public IOK. */
2032 DEBUG_c(PerlIO_printf(Perl_debug_log,
2033 "0x%"UVxf" uv(%g => %"IVdf") (imprecise)\n",
2038 /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN,
2039 but the cast (NV)IV_MIN rounds to a the value less (more
2040 negative) than IV_MIN which happens to be equal to SvNVX ??
2041 Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and
2042 NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and
2043 (NV)UVX == NVX are both true, but the values differ. :-(
2044 Hopefully for 2s complement IV_MIN is something like
2045 0x8000000000000000 which will be exact. NWC */
2048 SvUVX(sv) = U_V(SvNVX(sv));
2050 (SvNVX(sv) == (NV) SvUVX(sv))
2051 #ifndef NV_PRESERVES_UV
2052 /* Make sure it's not 0xFFFFFFFFFFFFFFFF */
2053 /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */
2054 && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv))
2055 /* Don't flag it as "accurately an integer" if the number
2056 came from a (by definition imprecise) NV operation, and
2057 we're outside the range of NV integer precision */
2062 DEBUG_c(PerlIO_printf(Perl_debug_log,
2063 "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n",
2069 else if (SvPOKp(sv) && SvLEN(sv)) {
2070 I32 numtype = looks_like_number(sv);
2072 /* We want to avoid a possible problem when we cache a UV which
2073 may be later translated to an NV, and the resulting NV is not
2074 the translation of the initial data.
2076 This means that if we cache such a UV, we need to cache the
2077 NV as well. Moreover, we trade speed for space, and do not
2078 cache the NV if not needed.
2081 if ((numtype & ~IS_NUMBER_NEG) == IS_NUMBER_TO_INT_BY_ATOL) {
2082 /* The NV may be reconstructed from IV - safe to cache IV,
2083 which may be calculated by atol(). */
2084 if (SvTYPE(sv) < SVt_PVIV)
2085 sv_upgrade(sv, SVt_PVIV);
2087 SvIVX(sv) = Atol(SvPVX(sv));
2091 char *num_begin = SvPVX(sv);
2092 int save_errno = errno;
2094 /* seems that strtoul taking numbers that start with - is
2095 implementation dependant, and can't be relied upon. */
2096 if (numtype & IS_NUMBER_NEG) {
2097 /* Not totally defensive. assumine that looks_like_num
2098 didn't lie about a - sign */
2099 while (isSPACE(*num_begin))
2101 if (*num_begin == '-')
2105 /* Is it an integer that we could convert with strtoul?
2106 So try it, and if it doesn't set errno then it's pukka.
2107 This should be faster than going atof and then thinking. */
2108 if (((numtype & (IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_NOT_INT))
2109 == IS_NUMBER_TO_INT_BY_STRTOL)
2110 && ((errno = 0), 1) /* always true */
2111 && ((u = Strtoul(num_begin, Null(char**), 10)), 1) /* ditto */
2113 /* If known to be negative, check it didn't undeflow IV
2114 XXX possibly we should put more negative values as NVs
2115 direct rather than go via atof below */
2116 && ((numtype & IS_NUMBER_NEG) ? (u <= (UV)IV_MIN) : 1)) {
2119 if (SvTYPE(sv) < SVt_PVIV)
2120 sv_upgrade(sv, SVt_PVIV);
2123 /* If it's negative must use IV.
2124 IV-over-UV optimisation */
2125 if (numtype & IS_NUMBER_NEG) {
2127 } else if (u <= (UV) IV_MAX) {
2130 /* it didn't overflow, and it was positive. */
2139 /* Hopefully trace flow will optimise this away where possible
2143 /* It wasn't an integer, or it overflowed, or we don't have
2144 strtol. Do things the slow way - check if it's a IV etc. */
2145 d = Atof(SvPVX(sv));
2147 if (SvTYPE(sv) < SVt_PVNV)
2148 sv_upgrade(sv, SVt_PVNV);
2151 if (! numtype && ckWARN(WARN_NUMERIC))
2154 #if defined(USE_LONG_DOUBLE)
2155 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n",
2156 PTR2UV(sv), SvNVX(sv)));
2158 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%g)\n",
2159 PTR2UV(sv), SvNVX(sv)));
2162 #ifdef NV_PRESERVES_UV
2163 (void)SvIOKp_on(sv);
2165 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
2166 SvIVX(sv) = I_V(SvNVX(sv));
2167 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
2170 /* Integer is imprecise. NOK, IOKp */
2172 /* UV will not work better than IV */
2174 if (SvNVX(sv) > (NV)UV_MAX) {
2176 /* Integer is inaccurate. NOK, IOKp, is UV */
2180 SvUVX(sv) = U_V(SvNVX(sv));
2181 /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs
2182 NV preservse UV so can do correct comparison. */
2183 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
2187 /* Integer is imprecise. NOK, IOKp, is UV */
2192 #else /* NV_PRESERVES_UV */
2193 if (((UV)1 << NV_PRESERVES_UV_BITS) >
2194 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) {
2195 /* Small enough to preserve all bits. */
2196 (void)SvIOKp_on(sv);
2198 SvIVX(sv) = I_V(SvNVX(sv));
2199 if ((NV)(SvIVX(sv)) == SvNVX(sv))
2201 /* Assumption: first non-preserved integer is < IV_MAX,
2202 this NV is in the preserved range, therefore: */
2203 if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))
2205 Perl_croak(aTHX_ "sv_2uv assumed (U_V(fabs(SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%g U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX);
2208 sv_2iuv_non_preserve (sv, numtype);
2209 #endif /* NV_PRESERVES_UV */
2214 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2215 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2218 if (SvTYPE(sv) < SVt_IV)
2219 /* Typically the caller expects that sv_any is not NULL now. */
2220 sv_upgrade(sv, SVt_IV);
2224 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
2225 PTR2UV(sv),SvUVX(sv)));
2226 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
2230 Perl_sv_2nv(pTHX_ register SV *sv)
2234 if (SvGMAGICAL(sv)) {
2238 if (SvPOKp(sv) && SvLEN(sv)) {
2239 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
2241 return Atof(SvPVX(sv));
2245 return (NV)SvUVX(sv);
2247 return (NV)SvIVX(sv);
2250 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2251 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2257 if (SvTHINKFIRST(sv)) {
2260 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
2261 (SvRV(tmpstr) != SvRV(sv)))
2262 return SvNV(tmpstr);
2263 return PTR2NV(SvRV(sv));
2265 if (SvREADONLY(sv) && SvFAKE(sv)) {
2266 sv_force_normal(sv);
2268 if (SvREADONLY(sv) && !SvOK(sv)) {
2269 if (ckWARN(WARN_UNINITIALIZED))
2274 if (SvTYPE(sv) < SVt_NV) {
2275 if (SvTYPE(sv) == SVt_IV)
2276 sv_upgrade(sv, SVt_PVNV);
2278 sv_upgrade(sv, SVt_NV);
2279 #if defined(USE_LONG_DOUBLE)
2281 STORE_NUMERIC_LOCAL_SET_STANDARD();
2282 PerlIO_printf(Perl_debug_log,
2283 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
2284 PTR2UV(sv), SvNVX(sv));
2285 RESTORE_NUMERIC_LOCAL();
2289 STORE_NUMERIC_LOCAL_SET_STANDARD();
2290 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
2291 PTR2UV(sv), SvNVX(sv));
2292 RESTORE_NUMERIC_LOCAL();
2296 else if (SvTYPE(sv) < SVt_PVNV)
2297 sv_upgrade(sv, SVt_PVNV);
2299 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
2301 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
2302 #ifdef NV_PRESERVES_UV
2305 /* Only set the public NV OK flag if this NV preserves the IV */
2306 /* Check it's not 0xFFFFFFFFFFFFFFFF */
2307 if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv))))
2308 : (SvIVX(sv) == I_V(SvNVX(sv))))
2314 else if (SvPOKp(sv) && SvLEN(sv)) {
2315 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
2317 SvNVX(sv) = Atof(SvPVX(sv));
2318 #ifdef NV_PRESERVES_UV
2321 /* Only set the public NV OK flag if this NV preserves the value in
2322 the PV at least as well as an IV/UV would.
2323 Not sure how to do this 100% reliably. */
2324 /* if that shift count is out of range then Configure's test is
2325 wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS ==
2327 if (((UV)1 << NV_PRESERVES_UV_BITS) >
2328 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)))
2329 SvNOK_on(sv); /* Definitely small enough to preserve all bits */
2330 else if (SvNVX(sv) < (NV)IV_MIN || SvNVX(sv) > (NV)UV_MAX) {
2331 /* Definitely too large/small to fit in an integer, so no loss
2332 of precision going to integer in the future via NV */
2335 /* Is it something we can run through strtol etc (ie no
2336 trailing exponent part)? */
2337 int numtype = looks_like_number(sv);
2338 /* XXX probably should cache this if called above */
2341 (IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_TO_INT_BY_STRTOL))) {
2342 /* Can't use strtol etc to convert this string, so don't try */
2345 sv_2inuv_non_preserve (sv, numtype);
2347 #endif /* NV_PRESERVES_UV */
2350 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2352 if (SvTYPE(sv) < SVt_NV)
2353 /* Typically the caller expects that sv_any is not NULL now. */
2354 /* XXX Ilya implies that this is a bug in callers that assume this
2355 and ideally should be fixed. */
2356 sv_upgrade(sv, SVt_NV);
2359 #if defined(USE_LONG_DOUBLE)
2361 STORE_NUMERIC_LOCAL_SET_STANDARD();
2362 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
2363 PTR2UV(sv), SvNVX(sv));
2364 RESTORE_NUMERIC_LOCAL();
2368 STORE_NUMERIC_LOCAL_SET_STANDARD();
2369 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
2370 PTR2UV(sv), SvNVX(sv));
2371 RESTORE_NUMERIC_LOCAL();
2378 S_asIV(pTHX_ SV *sv)
2380 I32 numtype = looks_like_number(sv);
2383 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
2384 return Atol(SvPVX(sv));
2386 if (ckWARN(WARN_NUMERIC))
2389 d = Atof(SvPVX(sv));
2394 S_asUV(pTHX_ SV *sv)
2396 I32 numtype = looks_like_number(sv);
2399 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
2400 return Strtoul(SvPVX(sv), Null(char**), 10);
2403 if (ckWARN(WARN_NUMERIC))
2406 return U_V(Atof(SvPVX(sv)));
2410 * Returns a combination of (advisory only - can get false negatives)
2411 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF
2412 * IS_NUMBER_LONGER_THAN_IV_MAX, IS_NUMBER_AS_LONG_AS_IV_MAX
2413 * IS_NUMBER_NOT_INT, IS_NUMBER_NEG, IS_NUMBER_INFINITY
2414 * 0 if does not look like number.
2416 * (atol and strtol stop when they hit a decimal point. strtol will return
2417 * LONG_MAX and LONG_MIN when given out of range values. ANSI says they should
2418 * do this, and vendors have had 11 years to get it right.
2419 * However, will try to make it still work with only atol
2421 * IS_NUMBER_TO_INT_BY_ATOL 123456789 or 123456789.3 definitely < IV_MAX
2422 * IS_NUMBER_TO_INT_BY_STRTOL 123456789 or 123456789.3 if digits = IV_MAX
2423 * IS_NUMBER_TO_INT_BY_ATOF 123456789e0 or >> IV_MAX
2424 * IS_NUMBER_LONGER_THAN_IV_MAX lots of digits, don't bother with atol
2425 * IS_NUMBER_AS_LONG_AS_IV_MAX atol might hit LONG_MAX, might not.
2426 * IS_NUMBER_NOT_INT saw "." or "e"
2428 * IS_NUMBER_INFINITY
2432 =for apidoc looks_like_number
2434 Test if an the content of an SV looks like a number (or is a
2435 number). C<Inf> and C<Infinity> are treated as numbers (so will not
2436 issue a non-numeric warning), even if your atof() doesn't grok them.
2442 Perl_looks_like_number(pTHX_ SV *sv)
2445 register char *send;
2446 register char *sbegin;
2447 register char *nbegin;
2451 #ifdef USE_LOCALE_NUMERIC
2452 bool specialradix = FALSE;
2459 else if (SvPOKp(sv))
2460 sbegin = SvPV(sv, len);
2463 send = sbegin + len;
2470 numtype = IS_NUMBER_NEG;
2477 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can converted to
2478 * integer with atol() without overflow, IS_NUMBER_TO_INT_BY_STRTOL if
2479 * possibly slightly larger than max int, IS_NUMBER_TO_INT_BY_ATOF if you
2480 * will need (int)atof().
2483 /* next must be digit or the radix separator or beginning of infinity */
2487 } while (isDIGIT(*s));
2489 /* Aaargh. long long really is irritating.
2490 In the gospel according to ANSI 1989, it is an axiom that "long"
2491 is the longest integer type, and that if you don't know how long
2492 something is you can cast it to long, and nothing will be lost
2493 (except possibly speed of execution if long is slower than the
2495 Now, one can't be sure if the old rules apply, or long long
2496 (or some other newfangled thing) is actually longer than the
2497 (formerly) longest thing.
2499 /* This lot will work for 64 bit *as long as* either
2500 either long is 64 bit
2501 or we can find both strtol/strtoq and strtoul/strtouq
2502 If not, we really should refuse to let the user use 64 bit IVs
2503 By "64 bit" I really mean IVs that don't get preserved by NVs
2504 It also should work for 128 bit IVs. Can any lend me a machine to
2507 if (s - nbegin > TYPE_DIGITS(UV)) /* Cannot cache ato[ul]() */
2508 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_LONGER_THAN_IV_MAX;
2509 else if (s - nbegin < BIT_DIGITS(((sizeof (IV)>sizeof (long))
2510 ? sizeof(long) : sizeof (IV))*8-1))
2511 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
2513 /* Can't be sure either way. (For 64 bit UV, 63 bit IV is 1 decimal
2514 digit less (IV_MAX= 9223372036854775807,
2515 UV_MAX= 18446744073709551615) so be cautious */
2516 numtype |= IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_AS_LONG_AS_IV_MAX;
2519 #ifdef USE_LOCALE_NUMERIC
2520 || (specialradix = IS_NUMERIC_RADIX(s))
2523 #ifdef USE_LOCALE_NUMERIC
2525 s += SvCUR(PL_numeric_radix);
2529 numtype |= IS_NUMBER_NOT_INT;
2530 while (isDIGIT(*s)) /* optional digits after the radix */
2535 #ifdef USE_LOCALE_NUMERIC
2536 || (specialradix = IS_NUMERIC_RADIX(s))
2539 #ifdef USE_LOCALE_NUMERIC
2541 s += SvCUR(PL_numeric_radix);
2545 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_INT;
2546 /* no digits before the radix means we need digits after it */
2550 } while (isDIGIT(*s));
2555 else if (*s == 'I' || *s == 'i') {
2556 s++; if (*s != 'N' && *s != 'n') return 0;
2557 s++; if (*s != 'F' && *s != 'f') return 0;
2558 s++; if (*s == 'I' || *s == 'i') {
2559 s++; if (*s != 'N' && *s != 'n') return 0;
2560 s++; if (*s != 'I' && *s != 'i') return 0;
2561 s++; if (*s != 'T' && *s != 't') return 0;
2562 s++; if (*s != 'Y' && *s != 'y') return 0;
2571 numtype = (numtype & IS_NUMBER_NEG) /* Keep track of sign */
2572 | IS_NUMBER_INFINITY | IS_NUMBER_NOT_INT;
2574 /* we can have an optional exponent part */
2575 if (*s == 'e' || *s == 'E') {
2576 numtype &= IS_NUMBER_NEG;
2577 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_INT;
2579 if (*s == '+' || *s == '-')
2584 } while (isDIGIT(*s));
2594 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2595 return IS_NUMBER_TO_INT_BY_ATOL;
2600 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2603 return sv_2pv(sv, &n_a);
2606 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2608 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2610 char *ptr = buf + TYPE_CHARS(UV);
2624 *--ptr = '0' + (uv % 10);
2633 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2638 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2639 char *tmpbuf = tbuf;
2645 if (SvGMAGICAL(sv)) {
2653 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2655 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2660 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2665 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2666 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2673 if (SvTHINKFIRST(sv)) {
2676 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2677 (SvRV(tmpstr) != SvRV(sv)))
2678 return SvPV(tmpstr,*lp);
2685 switch (SvTYPE(sv)) {
2687 if ( ((SvFLAGS(sv) &
2688 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2689 == (SVs_OBJECT|SVs_RMG))
2690 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2691 && (mg = mg_find(sv, 'r'))) {
2692 regexp *re = (regexp *)mg->mg_obj;
2695 char *fptr = "msix";
2700 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2702 while((ch = *fptr++)) {
2704 reflags[left++] = ch;
2707 reflags[right--] = ch;
2712 reflags[left] = '-';
2716 mg->mg_len = re->prelen + 4 + left;
2717 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2718 Copy("(?", mg->mg_ptr, 2, char);
2719 Copy(reflags, mg->mg_ptr+2, left, char);
2720 Copy(":", mg->mg_ptr+left+2, 1, char);
2721 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2722 mg->mg_ptr[mg->mg_len - 1] = ')';
2723 mg->mg_ptr[mg->mg_len] = 0;
2725 PL_reginterp_cnt += re->program[0].next_off;
2737 case SVt_PVBM: if (SvROK(sv))
2740 s = "SCALAR"; break;
2741 case SVt_PVLV: s = "LVALUE"; break;
2742 case SVt_PVAV: s = "ARRAY"; break;
2743 case SVt_PVHV: s = "HASH"; break;
2744 case SVt_PVCV: s = "CODE"; break;
2745 case SVt_PVGV: s = "GLOB"; break;
2746 case SVt_PVFM: s = "FORMAT"; break;
2747 case SVt_PVIO: s = "IO"; break;
2748 default: s = "UNKNOWN"; break;
2752 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2755 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2761 if (SvREADONLY(sv) && !SvOK(sv)) {
2762 if (ckWARN(WARN_UNINITIALIZED))
2768 if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) {
2769 /* I'm assuming that if both IV and NV are equally valid then
2770 converting the IV is going to be more efficient */
2771 U32 isIOK = SvIOK(sv);
2772 U32 isUIOK = SvIsUV(sv);
2773 char buf[TYPE_CHARS(UV)];
2776 if (SvTYPE(sv) < SVt_PVIV)
2777 sv_upgrade(sv, SVt_PVIV);
2779 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2781 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2782 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2783 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2784 SvCUR_set(sv, ebuf - ptr);
2794 else if (SvNOKp(sv)) {
2795 if (SvTYPE(sv) < SVt_PVNV)
2796 sv_upgrade(sv, SVt_PVNV);
2797 /* The +20 is pure guesswork. Configure test needed. --jhi */
2798 SvGROW(sv, NV_DIG + 20);
2800 olderrno = errno; /* some Xenix systems wipe out errno here */
2802 if (SvNVX(sv) == 0.0)
2803 (void)strcpy(s,"0");
2807 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2810 #ifdef FIXNEGATIVEZERO
2811 if (*s == '-' && s[1] == '0' && !s[2])
2821 if (ckWARN(WARN_UNINITIALIZED)
2822 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2825 if (SvTYPE(sv) < SVt_PV)
2826 /* Typically the caller expects that sv_any is not NULL now. */
2827 sv_upgrade(sv, SVt_PV);
2830 *lp = s - SvPVX(sv);
2833 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2834 PTR2UV(sv),SvPVX(sv)));
2838 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2839 /* Sneaky stuff here */
2843 tsv = newSVpv(tmpbuf, 0);
2859 len = strlen(tmpbuf);
2861 #ifdef FIXNEGATIVEZERO
2862 if (len == 2 && t[0] == '-' && t[1] == '0') {
2867 (void)SvUPGRADE(sv, SVt_PV);
2869 s = SvGROW(sv, len + 1);
2878 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2881 return sv_2pvbyte(sv, &n_a);
2885 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2887 sv_utf8_downgrade(sv,0);
2888 return SvPV(sv,*lp);
2892 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2895 return sv_2pvutf8(sv, &n_a);
2899 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2901 sv_utf8_upgrade(sv);
2902 return SvPV(sv,*lp);
2905 /* This function is only called on magical items */
2907 Perl_sv_2bool(pTHX_ register SV *sv)
2916 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2917 (SvRV(tmpsv) != SvRV(sv)))
2918 return SvTRUE(tmpsv);
2919 return SvRV(sv) != 0;
2922 register XPV* Xpvtmp;
2923 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2924 (*Xpvtmp->xpv_pv > '0' ||
2925 Xpvtmp->xpv_cur > 1 ||
2926 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2933 return SvIVX(sv) != 0;
2936 return SvNVX(sv) != 0.0;
2944 =for apidoc sv_utf8_upgrade
2946 Convert the PV of an SV to its UTF8-encoded form.
2947 Forces the SV to string form it it is not already.
2948 Always sets the SvUTF8 flag to avoid future validity checks even
2949 if all the bytes have hibit clear.
2955 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2964 (void) SvPV_nolen(sv);
2969 /* This function could be much more efficient if we had a FLAG in SVs
2970 * to signal if there are any hibit chars in the PV.
2971 * Given that there isn't make loop fast as possible
2977 if ((hibit = UTF8_IS_CONTINUED(*t++)))
2984 if (SvREADONLY(sv) && SvFAKE(sv)) {
2985 sv_force_normal(sv);
2988 len = SvCUR(sv) + 1; /* Plus the \0 */
2989 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2990 SvCUR(sv) = len - 1;
2992 Safefree(s); /* No longer using what was there before. */
2993 SvLEN(sv) = len; /* No longer know the real size. */
2995 /* Mark as UTF-8 even if no hibit - saves scanning loop */
3001 =for apidoc sv_utf8_downgrade
3003 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
3004 This may not be possible if the PV contains non-byte encoding characters;
3005 if this is the case, either returns false or, if C<fail_ok> is not
3012 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
3014 if (SvPOK(sv) && SvUTF8(sv)) {
3019 if (SvREADONLY(sv) && SvFAKE(sv))
3020 sv_force_normal(sv);
3022 if (!utf8_to_bytes((U8*)s, &len)) {
3027 Perl_croak(aTHX_ "Wide character in %s",
3028 PL_op_desc[PL_op->op_type]);
3030 Perl_croak(aTHX_ "Wide character");
3041 =for apidoc sv_utf8_encode
3043 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
3044 flag so that it looks like octets again. Used as a building block
3045 for encode_utf8 in Encode.xs
3051 Perl_sv_utf8_encode(pTHX_ register SV *sv)
3053 (void) sv_utf8_upgrade(sv);
3058 =for apidoc sv_utf8_decode
3060 Convert the octets in the PV from UTF-8 to chars. Scan for validity and then
3061 turn of SvUTF8 if needed so that we see characters. Used as a building block
3062 for decode_utf8 in Encode.xs
3070 Perl_sv_utf8_decode(pTHX_ register SV *sv)
3076 /* The octets may have got themselves encoded - get them back as bytes */
3077 if (!sv_utf8_downgrade(sv, TRUE))
3080 /* it is actually just a matter of turning the utf8 flag on, but
3081 * we want to make sure everything inside is valid utf8 first.
3084 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
3088 if (UTF8_IS_CONTINUED(*c++)) {
3098 /* Note: sv_setsv() should not be called with a source string that needs
3099 * to be reused, since it may destroy the source string if it is marked
3104 =for apidoc sv_setsv
3106 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
3107 The source SV may be destroyed if it is mortal. Does not handle 'set'
3108 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
3115 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
3117 register U32 sflags;
3123 SV_CHECK_THINKFIRST(dstr);
3125 sstr = &PL_sv_undef;
3126 stype = SvTYPE(sstr);
3127 dtype = SvTYPE(dstr);
3131 /* There's a lot of redundancy below but we're going for speed here */
3136 if (dtype != SVt_PVGV) {
3137 (void)SvOK_off(dstr);
3145 sv_upgrade(dstr, SVt_IV);
3148 sv_upgrade(dstr, SVt_PVNV);
3152 sv_upgrade(dstr, SVt_PVIV);
3155 (void)SvIOK_only(dstr);
3156 SvIVX(dstr) = SvIVX(sstr);
3159 if (SvTAINTED(sstr))
3170 sv_upgrade(dstr, SVt_NV);
3175 sv_upgrade(dstr, SVt_PVNV);
3178 SvNVX(dstr) = SvNVX(sstr);
3179 (void)SvNOK_only(dstr);
3180 if (SvTAINTED(sstr))
3188 sv_upgrade(dstr, SVt_RV);
3189 else if (dtype == SVt_PVGV &&
3190 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
3193 if (GvIMPORTED(dstr) != GVf_IMPORTED
3194 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3196 GvIMPORTED_on(dstr);
3207 sv_upgrade(dstr, SVt_PV);
3210 if (dtype < SVt_PVIV)
3211 sv_upgrade(dstr, SVt_PVIV);
3214 if (dtype < SVt_PVNV)
3215 sv_upgrade(dstr, SVt_PVNV);
3222 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
3223 PL_op_name[PL_op->op_type]);
3225 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
3229 if (dtype <= SVt_PVGV) {
3231 if (dtype != SVt_PVGV) {
3232 char *name = GvNAME(sstr);
3233 STRLEN len = GvNAMELEN(sstr);
3234 sv_upgrade(dstr, SVt_PVGV);
3235 sv_magic(dstr, dstr, '*', Nullch, 0);
3236 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
3237 GvNAME(dstr) = savepvn(name, len);
3238 GvNAMELEN(dstr) = len;
3239 SvFAKE_on(dstr); /* can coerce to non-glob */
3241 /* ahem, death to those who redefine active sort subs */
3242 else if (PL_curstackinfo->si_type == PERLSI_SORT
3243 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
3244 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
3247 #ifdef GV_SHARED_CHECK
3248 if (GvSHARED((GV*)dstr)) {
3249 Perl_croak(aTHX_ PL_no_modify);
3253 (void)SvOK_off(dstr);
3254 GvINTRO_off(dstr); /* one-shot flag */
3256 GvGP(dstr) = gp_ref(GvGP(sstr));
3257 if (SvTAINTED(sstr))
3259 if (GvIMPORTED(dstr) != GVf_IMPORTED
3260 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3262 GvIMPORTED_on(dstr);
3270 if (SvGMAGICAL(sstr)) {
3272 if (SvTYPE(sstr) != stype) {
3273 stype = SvTYPE(sstr);
3274 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
3278 if (stype == SVt_PVLV)
3279 (void)SvUPGRADE(dstr, SVt_PVNV);
3281 (void)SvUPGRADE(dstr, stype);
3284 sflags = SvFLAGS(sstr);
3286 if (sflags & SVf_ROK) {
3287 if (dtype >= SVt_PV) {
3288 if (dtype == SVt_PVGV) {
3289 SV *sref = SvREFCNT_inc(SvRV(sstr));
3291 int intro = GvINTRO(dstr);
3293 #ifdef GV_SHARED_CHECK
3294 if (GvSHARED((GV*)dstr)) {
3295 Perl_croak(aTHX_ PL_no_modify);
3302 GvINTRO_off(dstr); /* one-shot flag */
3303 Newz(602,gp, 1, GP);
3304 GvGP(dstr) = gp_ref(gp);
3305 GvSV(dstr) = NEWSV(72,0);
3306 GvLINE(dstr) = CopLINE(PL_curcop);
3307 GvEGV(dstr) = (GV*)dstr;
3310 switch (SvTYPE(sref)) {
3313 SAVESPTR(GvAV(dstr));
3315 dref = (SV*)GvAV(dstr);
3316 GvAV(dstr) = (AV*)sref;
3317 if (!GvIMPORTED_AV(dstr)
3318 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3320 GvIMPORTED_AV_on(dstr);
3325 SAVESPTR(GvHV(dstr));
3327 dref = (SV*)GvHV(dstr);
3328 GvHV(dstr) = (HV*)sref;
3329 if (!GvIMPORTED_HV(dstr)
3330 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3332 GvIMPORTED_HV_on(dstr);
3337 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
3338 SvREFCNT_dec(GvCV(dstr));
3339 GvCV(dstr) = Nullcv;
3340 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3341 PL_sub_generation++;
3343 SAVESPTR(GvCV(dstr));
3346 dref = (SV*)GvCV(dstr);
3347 if (GvCV(dstr) != (CV*)sref) {
3348 CV* cv = GvCV(dstr);
3350 if (!GvCVGEN((GV*)dstr) &&
3351 (CvROOT(cv) || CvXSUB(cv)))
3353 /* ahem, death to those who redefine
3354 * active sort subs */
3355 if (PL_curstackinfo->si_type == PERLSI_SORT &&
3356 PL_sortcop == CvSTART(cv))
3358 "Can't redefine active sort subroutine %s",
3359 GvENAME((GV*)dstr));
3360 /* Redefining a sub - warning is mandatory if
3361 it was a const and its value changed. */
3362 if (ckWARN(WARN_REDEFINE)
3364 && (!CvCONST((CV*)sref)
3365 || sv_cmp(cv_const_sv(cv),
3366 cv_const_sv((CV*)sref)))))
3368 Perl_warner(aTHX_ WARN_REDEFINE,
3370 ? "Constant subroutine %s redefined"
3371 : "Subroutine %s redefined",
3372 GvENAME((GV*)dstr));
3375 cv_ckproto(cv, (GV*)dstr,
3376 SvPOK(sref) ? SvPVX(sref) : Nullch);
3378 GvCV(dstr) = (CV*)sref;
3379 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3380 GvASSUMECV_on(dstr);
3381 PL_sub_generation++;
3383 if (!GvIMPORTED_CV(dstr)
3384 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3386 GvIMPORTED_CV_on(dstr);
3391 SAVESPTR(GvIOp(dstr));
3393 dref = (SV*)GvIOp(dstr);
3394 GvIOp(dstr) = (IO*)sref;
3398 SAVESPTR(GvFORM(dstr));
3400 dref = (SV*)GvFORM(dstr);
3401 GvFORM(dstr) = (CV*)sref;
3405 SAVESPTR(GvSV(dstr));
3407 dref = (SV*)GvSV(dstr);
3409 if (!GvIMPORTED_SV(dstr)
3410 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3412 GvIMPORTED_SV_on(dstr);
3420 if (SvTAINTED(sstr))
3425 (void)SvOOK_off(dstr); /* backoff */
3427 Safefree(SvPVX(dstr));
3428 SvLEN(dstr)=SvCUR(dstr)=0;
3431 (void)SvOK_off(dstr);
3432 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
3434 if (sflags & SVp_NOK) {
3436 /* Only set the public OK flag if the source has public OK. */
3437 if (sflags & SVf_NOK)
3438 SvFLAGS(dstr) |= SVf_NOK;
3439 SvNVX(dstr) = SvNVX(sstr);
3441 if (sflags & SVp_IOK) {
3442 (void)SvIOKp_on(dstr);
3443 if (sflags & SVf_IOK)
3444 SvFLAGS(dstr) |= SVf_IOK;
3445 if (sflags & SVf_IVisUV)
3447 SvIVX(dstr) = SvIVX(sstr);
3449 if (SvAMAGIC(sstr)) {
3453 else if (sflags & SVp_POK) {
3456 * Check to see if we can just swipe the string. If so, it's a
3457 * possible small lose on short strings, but a big win on long ones.
3458 * It might even be a win on short strings if SvPVX(dstr)
3459 * has to be allocated and SvPVX(sstr) has to be freed.
3462 if (SvTEMP(sstr) && /* slated for free anyway? */
3463 SvREFCNT(sstr) == 1 && /* and no other references to it? */
3464 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
3465 SvLEN(sstr) && /* and really is a string */
3466 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
3468 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
3470 SvFLAGS(dstr) &= ~SVf_OOK;
3471 Safefree(SvPVX(dstr) - SvIVX(dstr));
3473 else if (SvLEN(dstr))
3474 Safefree(SvPVX(dstr));
3476 (void)SvPOK_only(dstr);
3477 SvPV_set(dstr, SvPVX(sstr));
3478 SvLEN_set(dstr, SvLEN(sstr));
3479 SvCUR_set(dstr, SvCUR(sstr));
3482 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
3483 SvPV_set(sstr, Nullch);
3488 else { /* have to copy actual string */
3489 STRLEN len = SvCUR(sstr);
3491 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
3492 Move(SvPVX(sstr),SvPVX(dstr),len,char);
3493 SvCUR_set(dstr, len);
3494 *SvEND(dstr) = '\0';
3495 (void)SvPOK_only(dstr);
3497 if (sflags & SVf_UTF8)
3500 if (sflags & SVp_NOK) {
3502 if (sflags & SVf_NOK)
3503 SvFLAGS(dstr) |= SVf_NOK;
3504 SvNVX(dstr) = SvNVX(sstr);
3506 if (sflags & SVp_IOK) {
3507 (void)SvIOKp_on(dstr);
3508 if (sflags & SVf_IOK)
3509 SvFLAGS(dstr) |= SVf_IOK;
3510 if (sflags & SVf_IVisUV)
3512 SvIVX(dstr) = SvIVX(sstr);
3515 else if (sflags & SVp_IOK) {
3516 if (sflags & SVf_IOK)
3517 (void)SvIOK_only(dstr);
3519 (void)SvOK_off(dstr);
3520 (void)SvIOKp_on(dstr);
3522 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
3523 if (sflags & SVf_IVisUV)
3525 SvIVX(dstr) = SvIVX(sstr);
3526 if (sflags & SVp_NOK) {
3527 if (sflags & SVf_NOK)
3528 (void)SvNOK_on(dstr);
3530 (void)SvNOKp_on(dstr);
3531 SvNVX(dstr) = SvNVX(sstr);
3534 else if (sflags & SVp_NOK) {
3535 if (sflags & SVf_NOK)
3536 (void)SvNOK_only(dstr);
3538 (void)SvOK_off(dstr);
3541 SvNVX(dstr) = SvNVX(sstr);
3544 if (dtype == SVt_PVGV) {
3545 if (ckWARN(WARN_MISC))
3546 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
3549 (void)SvOK_off(dstr);
3551 if (SvTAINTED(sstr))
3556 =for apidoc sv_setsv_mg
3558 Like C<sv_setsv>, but also handles 'set' magic.
3564 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
3566 sv_setsv(dstr,sstr);
3571 =for apidoc sv_setpvn
3573 Copies a string into an SV. The C<len> parameter indicates the number of
3574 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
3580 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3582 register char *dptr;
3584 SV_CHECK_THINKFIRST(sv);
3590 /* len is STRLEN which is unsigned, need to copy to signed */
3594 (void)SvUPGRADE(sv, SVt_PV);
3596 SvGROW(sv, len + 1);
3598 Move(ptr,dptr,len,char);
3601 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3606 =for apidoc sv_setpvn_mg
3608 Like C<sv_setpvn>, but also handles 'set' magic.
3614 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3616 sv_setpvn(sv,ptr,len);
3621 =for apidoc sv_setpv
3623 Copies a string into an SV. The string must be null-terminated. Does not
3624 handle 'set' magic. See C<sv_setpv_mg>.
3630 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3632 register STRLEN len;
3634 SV_CHECK_THINKFIRST(sv);
3640 (void)SvUPGRADE(sv, SVt_PV);
3642 SvGROW(sv, len + 1);
3643 Move(ptr,SvPVX(sv),len+1,char);
3645 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3650 =for apidoc sv_setpv_mg
3652 Like C<sv_setpv>, but also handles 'set' magic.
3658 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3665 =for apidoc sv_usepvn
3667 Tells an SV to use C<ptr> to find its string value. Normally the string is
3668 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3669 The C<ptr> should point to memory that was allocated by C<malloc>. The
3670 string length, C<len>, must be supplied. This function will realloc the
3671 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3672 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3673 See C<sv_usepvn_mg>.
3679 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3681 SV_CHECK_THINKFIRST(sv);
3682 (void)SvUPGRADE(sv, SVt_PV);
3687 (void)SvOOK_off(sv);
3688 if (SvPVX(sv) && SvLEN(sv))
3689 Safefree(SvPVX(sv));
3690 Renew(ptr, len+1, char);
3693 SvLEN_set(sv, len+1);
3695 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3700 =for apidoc sv_usepvn_mg
3702 Like C<sv_usepvn>, but also handles 'set' magic.
3708 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3710 sv_usepvn(sv,ptr,len);
3715 Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags)
3717 if (SvREADONLY(sv)) {
3719 char *pvx = SvPVX(sv);
3720 STRLEN len = SvCUR(sv);
3721 U32 hash = SvUVX(sv);
3722 SvGROW(sv, len + 1);
3723 Move(pvx,SvPVX(sv),len,char);
3727 unsharepvn(pvx,SvUTF8(sv)?-len:len,hash);
3729 else if (PL_curcop != &PL_compiling)
3730 Perl_croak(aTHX_ PL_no_modify);
3733 sv_unref_flags(sv, flags);
3734 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3739 Perl_sv_force_normal(pTHX_ register SV *sv)
3741 sv_force_normal_flags(sv, 0);
3747 Efficient removal of characters from the beginning of the string buffer.
3748 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3749 the string buffer. The C<ptr> becomes the first character of the adjusted
3756 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3760 register STRLEN delta;
3762 if (!ptr || !SvPOKp(sv))
3764 SV_CHECK_THINKFIRST(sv);
3765 if (SvTYPE(sv) < SVt_PVIV)
3766 sv_upgrade(sv,SVt_PVIV);
3769 if (!SvLEN(sv)) { /* make copy of shared string */
3770 char *pvx = SvPVX(sv);
3771 STRLEN len = SvCUR(sv);
3772 SvGROW(sv, len + 1);
3773 Move(pvx,SvPVX(sv),len,char);
3777 SvFLAGS(sv) |= SVf_OOK;
3779 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3780 delta = ptr - SvPVX(sv);
3788 =for apidoc sv_catpvn
3790 Concatenates the string onto the end of the string which is in the SV. The
3791 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3792 'set' magic. See C<sv_catpvn_mg>.
3798 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3803 junk = SvPV_force(sv, tlen);
3804 SvGROW(sv, tlen + len + 1);
3807 Move(ptr,SvPVX(sv)+tlen,len,char);
3810 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3815 =for apidoc sv_catpvn_mg
3817 Like C<sv_catpvn>, but also handles 'set' magic.
3823 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3825 sv_catpvn(sv,ptr,len);
3830 =for apidoc sv_catsv
3832 Concatenates the string from SV C<ssv> onto the end of the string in
3833 SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but
3834 not 'set' magic. See C<sv_catsv_mg>.
3839 Perl_sv_catsv(pTHX_ SV *dsv, register SV *ssv)
3845 if ((spv = SvPV(ssv, slen))) {
3846 bool dutf8 = DO_UTF8(dsv);
3847 bool sutf8 = DO_UTF8(ssv);
3850 sv_catpvn(dsv,spv,slen);
3853 /* Not modifying source SV, so taking a temporary copy. */
3854 SV* csv = sv_2mortal(newSVsv(ssv));
3858 sv_utf8_upgrade(csv);
3859 cpv = SvPV(csv,clen);
3860 sv_catpvn(dsv,cpv,clen);
3863 sv_utf8_upgrade(dsv);
3864 sv_catpvn(dsv,spv,slen);
3865 SvUTF8_on(dsv); /* If dsv has no wide characters. */
3872 =for apidoc sv_catsv_mg
3874 Like C<sv_catsv>, but also handles 'set' magic.
3880 Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv)
3887 =for apidoc sv_catpv
3889 Concatenates the string onto the end of the string which is in the SV.
3890 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3896 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3898 register STRLEN len;
3904 junk = SvPV_force(sv, tlen);
3906 SvGROW(sv, tlen + len + 1);
3909 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3911 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3916 =for apidoc sv_catpv_mg
3918 Like C<sv_catpv>, but also handles 'set' magic.
3924 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3931 Perl_newSV(pTHX_ STRLEN len)
3937 sv_upgrade(sv, SVt_PV);
3938 SvGROW(sv, len + 1);
3943 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3946 =for apidoc sv_magic
3948 Adds magic to an SV.
3954 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3958 if (SvREADONLY(sv)) {
3959 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3960 Perl_croak(aTHX_ PL_no_modify);
3962 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3963 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3970 (void)SvUPGRADE(sv, SVt_PVMG);
3972 Newz(702,mg, 1, MAGIC);
3973 mg->mg_moremagic = SvMAGIC(sv);
3976 /* Some magic sontains a reference loop, where the sv and object refer to
3977 each other. To prevent a avoid a reference loop that would prevent such
3978 objects being freed, we look for such loops and if we find one we avoid
3979 incrementing the object refcount. */
3980 if (!obj || obj == sv || how == '#' || how == 'r' ||
3981 (SvTYPE(obj) == SVt_PVGV &&
3982 (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv ||
3983 GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv ||
3984 GvFORM(obj) == (CV*)sv)))
3989 mg->mg_obj = SvREFCNT_inc(obj);
3990 mg->mg_flags |= MGf_REFCOUNTED;
3993 mg->mg_len = namlen;
3996 mg->mg_ptr = savepvn(name, namlen);
3997 else if (namlen == HEf_SVKEY)
3998 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
4003 mg->mg_virtual = &PL_vtbl_sv;
4006 mg->mg_virtual = &PL_vtbl_amagic;
4009 mg->mg_virtual = &PL_vtbl_amagicelem;
4012 mg->mg_virtual = &PL_vtbl_ovrld;
4015 mg->mg_virtual = &PL_vtbl_bm;
4018 mg->mg_virtual = &PL_vtbl_regdata;
4021 mg->mg_virtual = &PL_vtbl_regdatum;
4024 mg->mg_virtual = &PL_vtbl_env;
4027 mg->mg_virtual = &PL_vtbl_fm;
4030 mg->mg_virtual = &PL_vtbl_envelem;
4033 mg->mg_virtual = &PL_vtbl_mglob;
4036 mg->mg_virtual = &PL_vtbl_isa;
4039 mg->mg_virtual = &PL_vtbl_isaelem;
4042 mg->mg_virtual = &PL_vtbl_nkeys;
4049 mg->mg_virtual = &PL_vtbl_dbline;
4053 mg->mg_virtual = &PL_vtbl_mutex;
4055 #endif /* USE_THREADS */
4056 #ifdef USE_LOCALE_COLLATE
4058 mg->mg_virtual = &PL_vtbl_collxfrm;
4060 #endif /* USE_LOCALE_COLLATE */
4062 mg->mg_virtual = &PL_vtbl_pack;
4066 mg->mg_virtual = &PL_vtbl_packelem;
4069 mg->mg_virtual = &PL_vtbl_regexp;
4072 mg->mg_virtual = &PL_vtbl_sig;
4075 mg->mg_virtual = &PL_vtbl_sigelem;
4078 mg->mg_virtual = &PL_vtbl_taint;
4082 mg->mg_virtual = &PL_vtbl_uvar;
4085 mg->mg_virtual = &PL_vtbl_vec;
4088 mg->mg_virtual = &PL_vtbl_substr;
4091 mg->mg_virtual = &PL_vtbl_defelem;
4094 mg->mg_virtual = &PL_vtbl_glob;
4097 mg->mg_virtual = &PL_vtbl_arylen;
4100 mg->mg_virtual = &PL_vtbl_pos;
4103 mg->mg_virtual = &PL_vtbl_backref;
4105 case '~': /* Reserved for use by extensions not perl internals. */
4106 /* Useful for attaching extension internal data to perl vars. */
4107 /* Note that multiple extensions may clash if magical scalars */
4108 /* etc holding private data from one are passed to another. */
4112 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
4116 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
4120 =for apidoc sv_unmagic
4122 Removes magic from an SV.
4128 Perl_sv_unmagic(pTHX_ SV *sv, int type)
4132 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
4135 for (mg = *mgp; mg; mg = *mgp) {
4136 if (mg->mg_type == type) {
4137 MGVTBL* vtbl = mg->mg_virtual;
4138 *mgp = mg->mg_moremagic;
4139 if (vtbl && vtbl->svt_free)
4140 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
4141 if (mg->mg_ptr && mg->mg_type != 'g') {
4142 if (mg->mg_len >= 0)
4143 Safefree(mg->mg_ptr);
4144 else if (mg->mg_len == HEf_SVKEY)
4145 SvREFCNT_dec((SV*)mg->mg_ptr);
4147 if (mg->mg_flags & MGf_REFCOUNTED)
4148 SvREFCNT_dec(mg->mg_obj);
4152 mgp = &mg->mg_moremagic;
4156 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
4163 =for apidoc sv_rvweaken
4171 Perl_sv_rvweaken(pTHX_ SV *sv)
4174 if (!SvOK(sv)) /* let undefs pass */
4177 Perl_croak(aTHX_ "Can't weaken a nonreference");
4178 else if (SvWEAKREF(sv)) {
4179 if (ckWARN(WARN_MISC))
4180 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
4184 sv_add_backref(tsv, sv);
4191 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
4195 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
4196 av = (AV*)mg->mg_obj;
4199 sv_magic(tsv, (SV*)av, '<', NULL, 0);
4200 SvREFCNT_dec(av); /* for sv_magic */
4206 S_sv_del_backref(pTHX_ SV *sv)
4213 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
4214 Perl_croak(aTHX_ "panic: del_backref");
4215 av = (AV *)mg->mg_obj;
4220 svp[i] = &PL_sv_undef; /* XXX */
4227 =for apidoc sv_insert
4229 Inserts a string at the specified offset/length within the SV. Similar to
4230 the Perl substr() function.
4236 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
4240 register char *midend;
4241 register char *bigend;
4247 Perl_croak(aTHX_ "Can't modify non-existent substring");
4248 SvPV_force(bigstr, curlen);
4249 (void)SvPOK_only_UTF8(bigstr);
4250 if (offset + len > curlen) {
4251 SvGROW(bigstr, offset+len+1);
4252 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
4253 SvCUR_set(bigstr, offset+len);
4257 i = littlelen - len;
4258 if (i > 0) { /* string might grow */
4259 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
4260 mid = big + offset + len;
4261 midend = bigend = big + SvCUR(bigstr);
4264 while (midend > mid) /* shove everything down */
4265 *--bigend = *--midend;
4266 Move(little,big+offset,littlelen,char);
4272 Move(little,SvPVX(bigstr)+offset,len,char);
4277 big = SvPVX(bigstr);
4280 bigend = big + SvCUR(bigstr);
4282 if (midend > bigend)
4283 Perl_croak(aTHX_ "panic: sv_insert");
4285 if (mid - big > bigend - midend) { /* faster to shorten from end */
4287 Move(little, mid, littlelen,char);
4290 i = bigend - midend;
4292 Move(midend, mid, i,char);
4296 SvCUR_set(bigstr, mid - big);
4299 else if ((i = mid - big)) { /* faster from front */
4300 midend -= littlelen;
4302 sv_chop(bigstr,midend-i);
4307 Move(little, mid, littlelen,char);
4309 else if (littlelen) {
4310 midend -= littlelen;
4311 sv_chop(bigstr,midend);
4312 Move(little,midend,littlelen,char);
4315 sv_chop(bigstr,midend);
4321 =for apidoc sv_replace
4323 Make the first argument a copy of the second, then delete the original.
4329 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
4331 U32 refcnt = SvREFCNT(sv);
4332 SV_CHECK_THINKFIRST(sv);
4333 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
4334 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
4335 if (SvMAGICAL(sv)) {
4339 sv_upgrade(nsv, SVt_PVMG);
4340 SvMAGIC(nsv) = SvMAGIC(sv);
4341 SvFLAGS(nsv) |= SvMAGICAL(sv);
4347 assert(!SvREFCNT(sv));
4348 StructCopy(nsv,sv,SV);
4349 SvREFCNT(sv) = refcnt;
4350 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
4355 =for apidoc sv_clear
4357 Clear an SV, making it empty. Does not free the memory used by the SV
4364 Perl_sv_clear(pTHX_ register SV *sv)
4368 assert(SvREFCNT(sv) == 0);
4371 if (PL_defstash) { /* Still have a symbol table? */
4376 Zero(&tmpref, 1, SV);
4377 sv_upgrade(&tmpref, SVt_RV);
4379 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
4380 SvREFCNT(&tmpref) = 1;
4383 stash = SvSTASH(sv);
4384 destructor = StashHANDLER(stash,DESTROY);
4387 PUSHSTACKi(PERLSI_DESTROY);
4388 SvRV(&tmpref) = SvREFCNT_inc(sv);
4393 call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
4399 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
4401 del_XRV(SvANY(&tmpref));
4404 if (PL_in_clean_objs)
4405 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
4407 /* DESTROY gave object new lease on life */
4413 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
4414 SvOBJECT_off(sv); /* Curse the object. */
4415 if (SvTYPE(sv) != SVt_PVIO)
4416 --PL_sv_objcount; /* XXX Might want something more general */
4419 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
4422 switch (SvTYPE(sv)) {
4425 IoIFP(sv) != PerlIO_stdin() &&
4426 IoIFP(sv) != PerlIO_stdout() &&
4427 IoIFP(sv) != PerlIO_stderr())
4429 io_close((IO*)sv, FALSE);
4431 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
4432 PerlDir_close(IoDIRP(sv));
4433 IoDIRP(sv) = (DIR*)NULL;
4434 Safefree(IoTOP_NAME(sv));
4435 Safefree(IoFMT_NAME(sv));
4436 Safefree(IoBOTTOM_NAME(sv));
4451 SvREFCNT_dec(LvTARG(sv));
4455 Safefree(GvNAME(sv));
4456 /* cannot decrease stash refcount yet, as we might recursively delete
4457 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
4458 of stash until current sv is completely gone.
4459 -- JohnPC, 27 Mar 1998 */
4460 stash = GvSTASH(sv);
4466 (void)SvOOK_off(sv);
4474 SvREFCNT_dec(SvRV(sv));
4476 else if (SvPVX(sv) && SvLEN(sv))
4477 Safefree(SvPVX(sv));
4478 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
4479 unsharepvn(SvPVX(sv),SvUTF8(sv)?-SvCUR(sv):SvCUR(sv),SvUVX(sv));
4491 switch (SvTYPE(sv)) {
4507 del_XPVIV(SvANY(sv));
4510 del_XPVNV(SvANY(sv));
4513 del_XPVMG(SvANY(sv));
4516 del_XPVLV(SvANY(sv));
4519 del_XPVAV(SvANY(sv));
4522 del_XPVHV(SvANY(sv));
4525 del_XPVCV(SvANY(sv));
4528 del_XPVGV(SvANY(sv));
4529 /* code duplication for increased performance. */
4530 SvFLAGS(sv) &= SVf_BREAK;
4531 SvFLAGS(sv) |= SVTYPEMASK;
4532 /* decrease refcount of the stash that owns this GV, if any */
4534 SvREFCNT_dec(stash);
4535 return; /* not break, SvFLAGS reset already happened */
4537 del_XPVBM(SvANY(sv));
4540 del_XPVFM(SvANY(sv));
4543 del_XPVIO(SvANY(sv));
4546 SvFLAGS(sv) &= SVf_BREAK;
4547 SvFLAGS(sv) |= SVTYPEMASK;
4551 Perl_sv_newref(pTHX_ SV *sv)
4554 ATOMIC_INC(SvREFCNT(sv));
4561 Free the memory used by an SV.
4567 Perl_sv_free(pTHX_ SV *sv)
4569 int refcount_is_zero;
4573 if (SvREFCNT(sv) == 0) {
4574 if (SvFLAGS(sv) & SVf_BREAK)
4576 if (PL_in_clean_all) /* All is fair */
4578 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
4579 /* make sure SvREFCNT(sv)==0 happens very seldom */
4580 SvREFCNT(sv) = (~(U32)0)/2;
4583 if (ckWARN_d(WARN_INTERNAL))
4584 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
4587 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
4588 if (!refcount_is_zero)
4592 if (ckWARN_d(WARN_DEBUGGING))
4593 Perl_warner(aTHX_ WARN_DEBUGGING,
4594 "Attempt to free temp prematurely: SV 0x%"UVxf,
4599 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
4600 /* make sure SvREFCNT(sv)==0 happens very seldom */
4601 SvREFCNT(sv) = (~(U32)0)/2;
4612 Returns the length of the string in the SV. See also C<SvCUR>.
4618 Perl_sv_len(pTHX_ register SV *sv)
4627 len = mg_length(sv);
4629 junk = SvPV(sv, len);
4634 =for apidoc sv_len_utf8
4636 Returns the number of characters in the string in an SV, counting wide
4637 UTF8 bytes as a single character.
4643 Perl_sv_len_utf8(pTHX_ register SV *sv)
4649 return mg_length(sv);
4653 U8 *s = (U8*)SvPV(sv, len);
4655 return Perl_utf8_length(aTHX_ s, s + len);
4660 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4665 I32 uoffset = *offsetp;
4671 start = s = (U8*)SvPV(sv, len);
4673 while (s < send && uoffset--)
4677 *offsetp = s - start;
4681 while (s < send && ulen--)
4691 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4700 s = (U8*)SvPV(sv, len);
4702 Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset");
4703 send = s + *offsetp;
4707 /* We can use low level directly here as we are not looking at the values */
4708 if (utf8n_to_uvuni(s, UTF8SKIP(s), &n, 0)) {
4722 Returns a boolean indicating whether the strings in the two SVs are
4729 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4736 bool pv1tmp = FALSE;
4737 bool pv2tmp = FALSE;
4744 pv1 = SvPV(sv1, cur1);
4751 pv2 = SvPV(sv2, cur2);
4753 /* do not utf8ize the comparands as a side-effect */
4754 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4755 bool is_utf8 = TRUE;
4757 if (PL_hints & HINT_UTF8_DISTINCT)
4761 char *pv = (char*)bytes_from_utf8((U8*)pv1, &cur1, &is_utf8);
4763 if ((pv1tmp = (pv != pv1)))
4767 char *pv = (char *)bytes_from_utf8((U8*)pv2, &cur2, &is_utf8);
4769 if ((pv2tmp = (pv != pv2)))
4775 eq = memEQ(pv1, pv2, cur1);
4788 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4789 string in C<sv1> is less than, equal to, or greater than the string in
4796 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4801 bool pv1tmp = FALSE;
4802 bool pv2tmp = FALSE;
4809 pv1 = SvPV(sv1, cur1);
4816 pv2 = SvPV(sv2, cur2);
4818 /* do not utf8ize the comparands as a side-effect */
4819 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4820 if (PL_hints & HINT_UTF8_DISTINCT)
4821 return SvUTF8(sv1) ? 1 : -1;
4824 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4828 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4834 cmp = cur2 ? -1 : 0;
4838 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4841 cmp = retval < 0 ? -1 : 1;
4842 } else if (cur1 == cur2) {
4845 cmp = cur1 < cur2 ? -1 : 1;
4858 =for apidoc sv_cmp_locale
4860 Compares the strings in two SVs in a locale-aware manner. See
4867 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4869 #ifdef USE_LOCALE_COLLATE
4875 if (PL_collation_standard)
4879 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4881 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4883 if (!pv1 || !len1) {
4894 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4897 return retval < 0 ? -1 : 1;
4900 * When the result of collation is equality, that doesn't mean
4901 * that there are no differences -- some locales exclude some
4902 * characters from consideration. So to avoid false equalities,
4903 * we use the raw string as a tiebreaker.
4909 #endif /* USE_LOCALE_COLLATE */
4911 return sv_cmp(sv1, sv2);
4914 #ifdef USE_LOCALE_COLLATE
4916 * Any scalar variable may carry an 'o' magic that contains the
4917 * scalar data of the variable transformed to such a format that
4918 * a normal memory comparison can be used to compare the data
4919 * according to the locale settings.
4922 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4926 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4927 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4932 Safefree(mg->mg_ptr);
4934 if ((xf = mem_collxfrm(s, len, &xlen))) {
4935 if (SvREADONLY(sv)) {
4938 return xf + sizeof(PL_collation_ix);
4941 sv_magic(sv, 0, 'o', 0, 0);
4942 mg = mg_find(sv, 'o');
4955 if (mg && mg->mg_ptr) {
4957 return mg->mg_ptr + sizeof(PL_collation_ix);
4965 #endif /* USE_LOCALE_COLLATE */
4970 Get a line from the filehandle and store it into the SV, optionally
4971 appending to the currently-stored string.
4977 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4981 register STDCHAR rslast;
4982 register STDCHAR *bp;
4986 SV_CHECK_THINKFIRST(sv);
4987 (void)SvUPGRADE(sv, SVt_PV);
4991 if (RsSNARF(PL_rs)) {
4995 else if (RsRECORD(PL_rs)) {
4996 I32 recsize, bytesread;
4999 /* Grab the size of the record we're getting */
5000 recsize = SvIV(SvRV(PL_rs));
5001 (void)SvPOK_only(sv); /* Validate pointer */
5002 buffer = SvGROW(sv, recsize + 1);
5005 /* VMS wants read instead of fread, because fread doesn't respect */
5006 /* RMS record boundaries. This is not necessarily a good thing to be */
5007 /* doing, but we've got no other real choice */
5008 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
5010 bytesread = PerlIO_read(fp, buffer, recsize);
5012 SvCUR_set(sv, bytesread);
5013 buffer[bytesread] = '\0';
5014 if (PerlIO_isutf8(fp))
5018 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
5020 else if (RsPARA(PL_rs)) {
5025 /* Get $/ i.e. PL_rs into same encoding as stream wants */
5026 if (PerlIO_isutf8(fp)) {
5027 rsptr = SvPVutf8(PL_rs, rslen);
5030 if (SvUTF8(PL_rs)) {
5031 if (!sv_utf8_downgrade(PL_rs, TRUE)) {
5032 Perl_croak(aTHX_ "Wide character in $/");
5035 rsptr = SvPV(PL_rs, rslen);
5039 rslast = rslen ? rsptr[rslen - 1] : '\0';
5041 if (RsPARA(PL_rs)) { /* have to do this both before and after */
5042 do { /* to make sure file boundaries work right */
5045 i = PerlIO_getc(fp);
5049 PerlIO_ungetc(fp,i);
5055 /* See if we know enough about I/O mechanism to cheat it ! */
5057 /* This used to be #ifdef test - it is made run-time test for ease
5058 of abstracting out stdio interface. One call should be cheap
5059 enough here - and may even be a macro allowing compile
5063 if (PerlIO_fast_gets(fp)) {
5066 * We're going to steal some values from the stdio struct
5067 * and put EVERYTHING in the innermost loop into registers.
5069 register STDCHAR *ptr;
5073 #if defined(VMS) && defined(PERLIO_IS_STDIO)
5074 /* An ungetc()d char is handled separately from the regular
5075 * buffer, so we getc() it back out and stuff it in the buffer.
5077 i = PerlIO_getc(fp);
5078 if (i == EOF) return 0;
5079 *(--((*fp)->_ptr)) = (unsigned char) i;
5083 /* Here is some breathtakingly efficient cheating */
5085 cnt = PerlIO_get_cnt(fp); /* get count into register */
5086 (void)SvPOK_only(sv); /* validate pointer */
5087 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
5088 if (cnt > 80 && SvLEN(sv) > append) {
5089 shortbuffered = cnt - SvLEN(sv) + append + 1;
5090 cnt -= shortbuffered;
5094 /* remember that cnt can be negative */
5095 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
5100 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
5101 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
5102 DEBUG_P(PerlIO_printf(Perl_debug_log,
5103 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
5104 DEBUG_P(PerlIO_printf(Perl_debug_log,
5105 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5106 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5107 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
5112 while (cnt > 0) { /* this | eat */
5114 if ((*bp++ = *ptr++) == rslast) /* really | dust */
5115 goto thats_all_folks; /* screams | sed :-) */
5119 Copy(ptr, bp, cnt, char); /* this | eat */
5120 bp += cnt; /* screams | dust */
5121 ptr += cnt; /* louder | sed :-) */
5126 if (shortbuffered) { /* oh well, must extend */
5127 cnt = shortbuffered;
5129 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
5131 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
5132 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
5136 DEBUG_P(PerlIO_printf(Perl_debug_log,
5137 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
5138 PTR2UV(ptr),(long)cnt));
5139 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
5140 DEBUG_P(PerlIO_printf(Perl_debug_log,
5141 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5142 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5143 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
5144 /* This used to call 'filbuf' in stdio form, but as that behaves like
5145 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
5146 another abstraction. */
5147 i = PerlIO_getc(fp); /* get more characters */
5148 DEBUG_P(PerlIO_printf(Perl_debug_log,
5149 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5150 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5151 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
5152 cnt = PerlIO_get_cnt(fp);
5153 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
5154 DEBUG_P(PerlIO_printf(Perl_debug_log,
5155 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
5157 if (i == EOF) /* all done for ever? */
5158 goto thats_really_all_folks;
5160 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
5162 SvGROW(sv, bpx + cnt + 2);
5163 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
5165 *bp++ = i; /* store character from PerlIO_getc */
5167 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
5168 goto thats_all_folks;
5172 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
5173 memNE((char*)bp - rslen, rsptr, rslen))
5174 goto screamer; /* go back to the fray */
5175 thats_really_all_folks:
5177 cnt += shortbuffered;
5178 DEBUG_P(PerlIO_printf(Perl_debug_log,
5179 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
5180 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
5181 DEBUG_P(PerlIO_printf(Perl_debug_log,
5182 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5183 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5184 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
5186 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
5187 DEBUG_P(PerlIO_printf(Perl_debug_log,
5188 "Screamer: done, len=%ld, string=|%.*s|\n",
5189 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
5194 /*The big, slow, and stupid way */
5197 /* Need to work around EPOC SDK features */
5198 /* On WINS: MS VC5 generates calls to _chkstk, */
5199 /* if a `large' stack frame is allocated */
5200 /* gcc on MARM does not generate calls like these */
5206 register STDCHAR *bpe = buf + sizeof(buf);
5208 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
5209 ; /* keep reading */
5213 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
5214 /* Accomodate broken VAXC compiler, which applies U8 cast to
5215 * both args of ?: operator, causing EOF to change into 255
5217 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
5221 sv_catpvn(sv, (char *) buf, cnt);
5223 sv_setpvn(sv, (char *) buf, cnt);
5225 if (i != EOF && /* joy */
5227 SvCUR(sv) < rslen ||
5228 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
5232 * If we're reading from a TTY and we get a short read,
5233 * indicating that the user hit his EOF character, we need
5234 * to notice it now, because if we try to read from the TTY
5235 * again, the EOF condition will disappear.
5237 * The comparison of cnt to sizeof(buf) is an optimization
5238 * that prevents unnecessary calls to feof().
5242 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
5247 if (RsPARA(PL_rs)) { /* have to do this both before and after */
5248 while (i != EOF) { /* to make sure file boundaries work right */
5249 i = PerlIO_getc(fp);
5251 PerlIO_ungetc(fp,i);
5257 if (PerlIO_isutf8(fp))
5262 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
5269 Auto-increment of the value in the SV.
5275 Perl_sv_inc(pTHX_ register SV *sv)
5284 if (SvTHINKFIRST(sv)) {
5285 if (SvREADONLY(sv)) {
5286 if (PL_curcop != &PL_compiling)
5287 Perl_croak(aTHX_ PL_no_modify);
5291 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
5293 i = PTR2IV(SvRV(sv));
5298 flags = SvFLAGS(sv);
5299 if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) {
5300 /* It's (privately or publicly) a float, but not tested as an
5301 integer, so test it to see. */
5303 flags = SvFLAGS(sv);
5305 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
5306 /* It's publicly an integer, or privately an integer-not-float */
5309 if (SvUVX(sv) == UV_MAX)
5310 sv_setnv(sv, (NV)UV_MAX + 1.0);
5312 (void)SvIOK_only_UV(sv);
5315 if (SvIVX(sv) == IV_MAX)
5316 sv_setuv(sv, (UV)IV_MAX + 1);
5318 (void)SvIOK_only(sv);
5324 if (flags & SVp_NOK) {
5325 (void)SvNOK_only(sv);
5330 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
5331 if ((flags & SVTYPEMASK) < SVt_PVIV)
5332 sv_upgrade(sv, SVt_IV);
5333 (void)SvIOK_only(sv);
5338 while (isALPHA(*d)) d++;
5339 while (isDIGIT(*d)) d++;
5341 #ifdef PERL_PRESERVE_IVUV
5342 /* Got to punt this an an integer if needs be, but we don't issue
5343 warnings. Probably ought to make the sv_iv_please() that does
5344 the conversion if possible, and silently. */
5345 I32 numtype = looks_like_number(sv);
5346 if (numtype && !(numtype & IS_NUMBER_INFINITY)) {
5347 /* Need to try really hard to see if it's an integer.
5348 9.22337203685478e+18 is an integer.
5349 but "9.22337203685478e+18" + 0 is UV=9223372036854779904
5350 so $a="9.22337203685478e+18"; $a+0; $a++
5351 needs to be the same as $a="9.22337203685478e+18"; $a++
5358 /* sv_2iv *should* have made this an NV */
5359 if (flags & SVp_NOK) {
5360 (void)SvNOK_only(sv);
5364 /* I don't think we can get here. Maybe I should assert this
5365 And if we do get here I suspect that sv_setnv will croak. NWC
5367 #if defined(USE_LONG_DOUBLE)
5368 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"PERL_PRIgldbl"\n",
5369 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5371 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%g\n",
5372 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5375 #endif /* PERL_PRESERVE_IVUV */
5376 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0);
5380 while (d >= SvPVX(sv)) {
5388 /* MKS: The original code here died if letters weren't consecutive.
5389 * at least it didn't have to worry about non-C locales. The
5390 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
5391 * arranged in order (although not consecutively) and that only
5392 * [A-Za-z] are accepted by isALPHA in the C locale.
5394 if (*d != 'z' && *d != 'Z') {
5395 do { ++*d; } while (!isALPHA(*d));
5398 *(d--) -= 'z' - 'a';
5403 *(d--) -= 'z' - 'a' + 1;
5407 /* oh,oh, the number grew */
5408 SvGROW(sv, SvCUR(sv) + 2);
5410 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
5421 Auto-decrement of the value in the SV.
5427 Perl_sv_dec(pTHX_ register SV *sv)
5435 if (SvTHINKFIRST(sv)) {
5436 if (SvREADONLY(sv)) {
5437 if (PL_curcop != &PL_compiling)
5438 Perl_croak(aTHX_ PL_no_modify);
5442 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
5444 i = PTR2IV(SvRV(sv));
5449 /* Unlike sv_inc we don't have to worry about string-never-numbers
5450 and keeping them magic. But we mustn't warn on punting */
5451 flags = SvFLAGS(sv);
5452 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
5453 /* It's publicly an integer, or privately an integer-not-float */
5456 if (SvUVX(sv) == 0) {
5457 (void)SvIOK_only(sv);
5461 (void)SvIOK_only_UV(sv);
5465 if (SvIVX(sv) == IV_MIN)
5466 sv_setnv(sv, (NV)IV_MIN - 1.0);
5468 (void)SvIOK_only(sv);
5474 if (flags & SVp_NOK) {
5476 (void)SvNOK_only(sv);
5479 if (!(flags & SVp_POK)) {
5480 if ((flags & SVTYPEMASK) < SVt_PVNV)
5481 sv_upgrade(sv, SVt_NV);
5483 (void)SvNOK_only(sv);
5486 #ifdef PERL_PRESERVE_IVUV
5488 I32 numtype = looks_like_number(sv);
5489 if (numtype && !(numtype & IS_NUMBER_INFINITY)) {
5490 /* Need to try really hard to see if it's an integer.
5491 9.22337203685478e+18 is an integer.
5492 but "9.22337203685478e+18" + 0 is UV=9223372036854779904
5493 so $a="9.22337203685478e+18"; $a+0; $a--
5494 needs to be the same as $a="9.22337203685478e+18"; $a--
5501 /* sv_2iv *should* have made this an NV */
5502 if (flags & SVp_NOK) {
5503 (void)SvNOK_only(sv);
5507 /* I don't think we can get here. Maybe I should assert this
5508 And if we do get here I suspect that sv_setnv will croak. NWC
5510 #if defined(USE_LONG_DOUBLE)
5511 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"PERL_PRIgldbl"\n",
5512 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5514 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%g\n",
5515 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5519 #endif /* PERL_PRESERVE_IVUV */
5520 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
5524 =for apidoc sv_mortalcopy
5526 Creates a new SV which is a copy of the original SV. The new SV is marked
5532 /* Make a string that will exist for the duration of the expression
5533 * evaluation. Actually, it may have to last longer than that, but
5534 * hopefully we won't free it until it has been assigned to a
5535 * permanent location. */
5538 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
5543 sv_setsv(sv,oldstr);
5545 PL_tmps_stack[++PL_tmps_ix] = sv;
5551 =for apidoc sv_newmortal
5553 Creates a new SV which is mortal. The reference count of the SV is set to 1.
5559 Perl_sv_newmortal(pTHX)
5564 SvFLAGS(sv) = SVs_TEMP;
5566 PL_tmps_stack[++PL_tmps_ix] = sv;
5571 =for apidoc sv_2mortal
5573 Marks an SV as mortal. The SV will be destroyed when the current context
5579 /* same thing without the copying */
5582 Perl_sv_2mortal(pTHX_ register SV *sv)
5586 if (SvREADONLY(sv) && SvIMMORTAL(sv))
5589 PL_tmps_stack[++PL_tmps_ix] = sv;
5597 Creates a new SV and copies a string into it. The reference count for the
5598 SV is set to 1. If C<len> is zero, Perl will compute the length using
5599 strlen(). For efficiency, consider using C<newSVpvn> instead.
5605 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
5612 sv_setpvn(sv,s,len);
5617 =for apidoc newSVpvn
5619 Creates a new SV and copies a string into it. The reference count for the
5620 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
5621 string. You are responsible for ensuring that the source string is at least
5628 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
5633 sv_setpvn(sv,s,len);
5638 =for apidoc newSVpvn_share
5640 Creates a new SV and populates it with a string from
5641 the string table. Turns on READONLY and FAKE.
5642 The idea here is that as string table is used for shared hash
5643 keys these strings will have SvPVX == HeKEY and hash lookup
5644 will avoid string compare.
5650 Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash)
5653 bool is_utf8 = FALSE;
5658 if (is_utf8 && !(PL_hints & HINT_UTF8_DISTINCT)) {
5659 STRLEN tmplen = len;
5660 /* See the note in hv.c:hv_fetch() --jhi */
5661 src = (char*)bytes_from_utf8((U8*)src, &tmplen, &is_utf8);
5665 PERL_HASH(hash, src, len);
5667 sv_upgrade(sv, SVt_PVIV);
5668 SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash);
5680 #if defined(PERL_IMPLICIT_CONTEXT)
5682 Perl_newSVpvf_nocontext(const char* pat, ...)
5687 va_start(args, pat);
5688 sv = vnewSVpvf(pat, &args);
5695 =for apidoc newSVpvf
5697 Creates a new SV an initialize it with the string formatted like
5704 Perl_newSVpvf(pTHX_ const char* pat, ...)
5708 va_start(args, pat);
5709 sv = vnewSVpvf(pat, &args);
5715 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
5719 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5726 Creates a new SV and copies a floating point value into it.
5727 The reference count for the SV is set to 1.
5733 Perl_newSVnv(pTHX_ NV n)
5745 Creates a new SV and copies an integer into it. The reference count for the
5752 Perl_newSViv(pTHX_ IV i)
5764 Creates a new SV and copies an unsigned integer into it.
5765 The reference count for the SV is set to 1.
5771 Perl_newSVuv(pTHX_ UV u)
5781 =for apidoc newRV_noinc
5783 Creates an RV wrapper for an SV. The reference count for the original
5784 SV is B<not> incremented.
5790 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5795 sv_upgrade(sv, SVt_RV);
5802 /* newRV_inc is #defined to newRV in sv.h */
5804 Perl_newRV(pTHX_ SV *tmpRef)
5806 return newRV_noinc(SvREFCNT_inc(tmpRef));
5812 Creates a new SV which is an exact duplicate of the original SV.
5817 /* make an exact duplicate of old */
5820 Perl_newSVsv(pTHX_ register SV *old)
5826 if (SvTYPE(old) == SVTYPEMASK) {
5827 if (ckWARN_d(WARN_INTERNAL))
5828 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5843 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5851 char todo[PERL_UCHAR_MAX+1];
5856 if (!*s) { /* reset ?? searches */
5857 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5858 pm->op_pmdynflags &= ~PMdf_USED;
5863 /* reset variables */
5865 if (!HvARRAY(stash))
5868 Zero(todo, 256, char);
5870 i = (unsigned char)*s;
5874 max = (unsigned char)*s++;
5875 for ( ; i <= max; i++) {
5878 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5879 for (entry = HvARRAY(stash)[i];
5881 entry = HeNEXT(entry))
5883 if (!todo[(U8)*HeKEY(entry)])
5885 gv = (GV*)HeVAL(entry);
5887 if (SvTHINKFIRST(sv)) {
5888 if (!SvREADONLY(sv) && SvROK(sv))
5893 if (SvTYPE(sv) >= SVt_PV) {
5895 if (SvPVX(sv) != Nullch)
5902 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5904 #ifdef USE_ENVIRON_ARRAY
5906 environ[0] = Nullch;
5915 Perl_sv_2io(pTHX_ SV *sv)
5921 switch (SvTYPE(sv)) {
5929 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5933 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5935 return sv_2io(SvRV(sv));
5936 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5942 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5949 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5956 return *gvp = Nullgv, Nullcv;
5957 switch (SvTYPE(sv)) {
5976 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5977 tryAMAGICunDEREF(to_cv);
5980 if (SvTYPE(sv) == SVt_PVCV) {
5989 Perl_croak(aTHX_ "Not a subroutine reference");
5994 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
6000 if (lref && !GvCVu(gv)) {
6003 tmpsv = NEWSV(704,0);
6004 gv_efullname3(tmpsv, gv, Nullch);
6005 /* XXX this is probably not what they think they're getting.
6006 * It has the same effect as "sub name;", i.e. just a forward
6008 newSUB(start_subparse(FALSE, 0),
6009 newSVOP(OP_CONST, 0, tmpsv),
6014 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
6023 Returns true if the SV has a true value by Perl's rules.
6029 Perl_sv_true(pTHX_ register SV *sv)
6035 if ((tXpv = (XPV*)SvANY(sv)) &&
6036 (tXpv->xpv_cur > 1 ||
6037 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
6044 return SvIVX(sv) != 0;
6047 return SvNVX(sv) != 0.0;
6049 return sv_2bool(sv);
6055 Perl_sv_iv(pTHX_ register SV *sv)
6059 return (IV)SvUVX(sv);
6066 Perl_sv_uv(pTHX_ register SV *sv)
6071 return (UV)SvIVX(sv);
6077 Perl_sv_nv(pTHX_ register SV *sv)
6085 Perl_sv_pv(pTHX_ SV *sv)
6092 return sv_2pv(sv, &n_a);
6096 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
6102 return sv_2pv(sv, lp);
6106 =for apidoc sv_pvn_force
6108 Get a sensible string out of the SV somehow.
6114 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
6118 if (SvTHINKFIRST(sv) && !SvROK(sv))
6119 sv_force_normal(sv);
6125 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
6126 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6127 PL_op_name[PL_op->op_type]);
6131 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
6136 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
6137 SvGROW(sv, len + 1);
6138 Move(s,SvPVX(sv),len,char);
6143 SvPOK_on(sv); /* validate pointer */
6145 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
6146 PTR2UV(sv),SvPVX(sv)));
6153 Perl_sv_pvbyte(pTHX_ SV *sv)
6155 sv_utf8_downgrade(sv,0);
6160 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
6162 sv_utf8_downgrade(sv,0);
6163 return sv_pvn(sv,lp);
6167 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
6169 sv_utf8_downgrade(sv,0);
6170 return sv_pvn_force(sv,lp);
6174 Perl_sv_pvutf8(pTHX_ SV *sv)
6176 sv_utf8_upgrade(sv);
6181 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
6183 sv_utf8_upgrade(sv);
6184 return sv_pvn(sv,lp);
6188 =for apidoc sv_pvutf8n_force
6190 Get a sensible UTF8-encoded string out of the SV somehow. See
6197 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
6199 sv_utf8_upgrade(sv);
6200 return sv_pvn_force(sv,lp);
6204 =for apidoc sv_reftype
6206 Returns a string describing what the SV is a reference to.
6212 Perl_sv_reftype(pTHX_ SV *sv, int ob)
6214 if (ob && SvOBJECT(sv))
6215 return HvNAME(SvSTASH(sv));
6217 switch (SvTYPE(sv)) {
6231 case SVt_PVLV: return "LVALUE";
6232 case SVt_PVAV: return "ARRAY";
6233 case SVt_PVHV: return "HASH";
6234 case SVt_PVCV: return "CODE";
6235 case SVt_PVGV: return "GLOB";
6236 case SVt_PVFM: return "FORMAT";
6237 case SVt_PVIO: return "IO";
6238 default: return "UNKNOWN";
6244 =for apidoc sv_isobject
6246 Returns a boolean indicating whether the SV is an RV pointing to a blessed
6247 object. If the SV is not an RV, or if the object is not blessed, then this
6254 Perl_sv_isobject(pTHX_ SV *sv)
6271 Returns a boolean indicating whether the SV is blessed into the specified
6272 class. This does not check for subtypes; use C<sv_derived_from> to verify
6273 an inheritance relationship.
6279 Perl_sv_isa(pTHX_ SV *sv, const char *name)
6291 return strEQ(HvNAME(SvSTASH(sv)), name);
6297 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
6298 it will be upgraded to one. If C<classname> is non-null then the new SV will
6299 be blessed in the specified package. The new SV is returned and its
6300 reference count is 1.
6306 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
6312 SV_CHECK_THINKFIRST(rv);
6315 if (SvTYPE(rv) >= SVt_PVMG) {
6316 U32 refcnt = SvREFCNT(rv);
6320 SvREFCNT(rv) = refcnt;
6323 if (SvTYPE(rv) < SVt_RV)
6324 sv_upgrade(rv, SVt_RV);
6325 else if (SvTYPE(rv) > SVt_RV) {
6326 (void)SvOOK_off(rv);
6327 if (SvPVX(rv) && SvLEN(rv))
6328 Safefree(SvPVX(rv));
6338 HV* stash = gv_stashpv(classname, TRUE);
6339 (void)sv_bless(rv, stash);
6345 =for apidoc sv_setref_pv
6347 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
6348 argument will be upgraded to an RV. That RV will be modified to point to
6349 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
6350 into the SV. The C<classname> argument indicates the package for the
6351 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6352 will be returned and will have a reference count of 1.
6354 Do not use with other Perl types such as HV, AV, SV, CV, because those
6355 objects will become corrupted by the pointer copy process.
6357 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
6363 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
6366 sv_setsv(rv, &PL_sv_undef);
6370 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
6375 =for apidoc sv_setref_iv
6377 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
6378 argument will be upgraded to an RV. That RV will be modified to point to
6379 the new SV. The C<classname> argument indicates the package for the
6380 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6381 will be returned and will have a reference count of 1.
6387 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
6389 sv_setiv(newSVrv(rv,classname), iv);
6394 =for apidoc sv_setref_uv
6396 Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv>
6397 argument will be upgraded to an RV. That RV will be modified to point to
6398 the new SV. The C<classname> argument indicates the package for the
6399 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6400 will be returned and will have a reference count of 1.
6406 Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv)
6408 sv_setuv(newSVrv(rv,classname), uv);
6413 =for apidoc sv_setref_nv
6415 Copies a double into a new SV, optionally blessing the SV. The C<rv>
6416 argument will be upgraded to an RV. That RV will be modified to point to
6417 the new SV. The C<classname> argument indicates the package for the
6418 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6419 will be returned and will have a reference count of 1.
6425 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
6427 sv_setnv(newSVrv(rv,classname), nv);
6432 =for apidoc sv_setref_pvn
6434 Copies a string into a new SV, optionally blessing the SV. The length of the
6435 string must be specified with C<n>. The C<rv> argument will be upgraded to
6436 an RV. That RV will be modified to point to the new SV. The C<classname>
6437 argument indicates the package for the blessing. Set C<classname> to
6438 C<Nullch> to avoid the blessing. The new SV will be returned and will have
6439 a reference count of 1.
6441 Note that C<sv_setref_pv> copies the pointer while this copies the string.
6447 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
6449 sv_setpvn(newSVrv(rv,classname), pv, n);
6454 =for apidoc sv_bless
6456 Blesses an SV into a specified package. The SV must be an RV. The package
6457 must be designated by its stash (see C<gv_stashpv()>). The reference count
6458 of the SV is unaffected.
6464 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
6468 Perl_croak(aTHX_ "Can't bless non-reference value");
6470 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
6471 if (SvREADONLY(tmpRef))
6472 Perl_croak(aTHX_ PL_no_modify);
6473 if (SvOBJECT(tmpRef)) {
6474 if (SvTYPE(tmpRef) != SVt_PVIO)
6476 SvREFCNT_dec(SvSTASH(tmpRef));
6479 SvOBJECT_on(tmpRef);
6480 if (SvTYPE(tmpRef) != SVt_PVIO)
6482 (void)SvUPGRADE(tmpRef, SVt_PVMG);
6483 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
6494 S_sv_unglob(pTHX_ SV *sv)
6498 assert(SvTYPE(sv) == SVt_PVGV);
6503 SvREFCNT_dec(GvSTASH(sv));
6504 GvSTASH(sv) = Nullhv;
6506 sv_unmagic(sv, '*');
6507 Safefree(GvNAME(sv));
6510 /* need to keep SvANY(sv) in the right arena */
6511 xpvmg = new_XPVMG();
6512 StructCopy(SvANY(sv), xpvmg, XPVMG);
6513 del_XPVGV(SvANY(sv));
6516 SvFLAGS(sv) &= ~SVTYPEMASK;
6517 SvFLAGS(sv) |= SVt_PVMG;
6521 =for apidoc sv_unref_flags
6523 Unsets the RV status of the SV, and decrements the reference count of
6524 whatever was being referenced by the RV. This can almost be thought of
6525 as a reversal of C<newSVrv>. The C<cflags> argument can contain
6526 C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented
6527 (otherwise the decrementing is conditional on the reference count being
6528 different from one or the reference being a readonly SV).
6535 Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags)
6539 if (SvWEAKREF(sv)) {
6547 if (SvREFCNT(rv) != 1 || SvREADONLY(rv) || flags) /* SV_IMMEDIATE_UNREF */
6549 else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */
6550 sv_2mortal(rv); /* Schedule for freeing later */
6554 =for apidoc sv_unref
6556 Unsets the RV status of the SV, and decrements the reference count of
6557 whatever was being referenced by the RV. This can almost be thought of
6558 as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
6559 being zero. See C<SvROK_off>.
6565 Perl_sv_unref(pTHX_ SV *sv)
6567 sv_unref_flags(sv, 0);
6571 Perl_sv_taint(pTHX_ SV *sv)
6573 sv_magic((sv), Nullsv, 't', Nullch, 0);
6577 Perl_sv_untaint(pTHX_ SV *sv)
6579 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
6580 MAGIC *mg = mg_find(sv, 't');
6587 Perl_sv_tainted(pTHX_ SV *sv)
6589 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
6590 MAGIC *mg = mg_find(sv, 't');
6591 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
6598 =for apidoc sv_setpviv
6600 Copies an integer into the given SV, also updating its string value.
6601 Does not handle 'set' magic. See C<sv_setpviv_mg>.
6607 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
6609 char buf[TYPE_CHARS(UV)];
6611 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
6613 sv_setpvn(sv, ptr, ebuf - ptr);
6618 =for apidoc sv_setpviv_mg
6620 Like C<sv_setpviv>, but also handles 'set' magic.
6626 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
6628 char buf[TYPE_CHARS(UV)];
6630 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
6632 sv_setpvn(sv, ptr, ebuf - ptr);
6636 #if defined(PERL_IMPLICIT_CONTEXT)
6638 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
6642 va_start(args, pat);
6643 sv_vsetpvf(sv, pat, &args);
6649 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
6653 va_start(args, pat);
6654 sv_vsetpvf_mg(sv, pat, &args);
6660 =for apidoc sv_setpvf
6662 Processes its arguments like C<sprintf> and sets an SV to the formatted
6663 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
6669 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
6672 va_start(args, pat);
6673 sv_vsetpvf(sv, pat, &args);
6678 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
6680 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6684 =for apidoc sv_setpvf_mg
6686 Like C<sv_setpvf>, but also handles 'set' magic.
6692 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
6695 va_start(args, pat);
6696 sv_vsetpvf_mg(sv, pat, &args);
6701 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6703 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6707 #if defined(PERL_IMPLICIT_CONTEXT)
6709 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
6713 va_start(args, pat);
6714 sv_vcatpvf(sv, pat, &args);
6719 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
6723 va_start(args, pat);
6724 sv_vcatpvf_mg(sv, pat, &args);
6730 =for apidoc sv_catpvf
6732 Processes its arguments like C<sprintf> and appends the formatted output
6733 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
6734 typically be called after calling this function to handle 'set' magic.
6740 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
6743 va_start(args, pat);
6744 sv_vcatpvf(sv, pat, &args);
6749 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
6751 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6755 =for apidoc sv_catpvf_mg
6757 Like C<sv_catpvf>, but also handles 'set' magic.
6763 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
6766 va_start(args, pat);
6767 sv_vcatpvf_mg(sv, pat, &args);
6772 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6774 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6779 =for apidoc sv_vsetpvfn
6781 Works like C<vcatpvfn> but copies the text into the SV instead of
6788 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6790 sv_setpvn(sv, "", 0);
6791 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
6795 S_expect_number(pTHX_ char** pattern)
6798 switch (**pattern) {
6799 case '1': case '2': case '3':
6800 case '4': case '5': case '6':
6801 case '7': case '8': case '9':
6802 while (isDIGIT(**pattern))
6803 var = var * 10 + (*(*pattern)++ - '0');
6807 #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern))
6810 =for apidoc sv_vcatpvfn
6812 Processes its arguments like C<vsprintf> and appends the formatted output
6813 to an SV. Uses an array of SVs if the C style variable argument list is
6814 missing (NULL). When running with taint checks enabled, indicates via
6815 C<maybe_tainted> if results are untrustworthy (often due to the use of
6822 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6829 static char nullstr[] = "(null)";
6832 /* no matter what, this is a string now */
6833 (void)SvPV_force(sv, origlen);
6835 /* special-case "", "%s", and "%_" */
6838 if (patlen == 2 && pat[0] == '%') {
6842 char *s = va_arg(*args, char*);
6843 sv_catpv(sv, s ? s : nullstr);
6845 else if (svix < svmax) {
6846 sv_catsv(sv, *svargs);
6847 if (DO_UTF8(*svargs))
6853 argsv = va_arg(*args, SV*);
6854 sv_catsv(sv, argsv);
6859 /* See comment on '_' below */
6864 patend = (char*)pat + patlen;
6865 for (p = (char*)pat; p < patend; p = q) {
6868 bool vectorize = FALSE;
6869 bool vectorarg = FALSE;
6870 bool vec_utf = FALSE;
6876 bool has_precis = FALSE;
6878 bool is_utf = FALSE;
6881 U8 utf8buf[UTF8_MAXLEN+1];
6882 STRLEN esignlen = 0;
6884 char *eptr = Nullch;
6886 /* Times 4: a decimal digit takes more than 3 binary digits.
6887 * NV_DIG: mantissa takes than many decimal digits.
6888 * Plus 32: Playing safe. */
6889 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6890 /* large enough for "%#.#f" --chip */
6891 /* what about long double NVs? --jhi */
6894 U8 *vecstr = Null(U8*);
6906 STRLEN dotstrlen = 1;
6907 I32 efix = 0; /* explicit format parameter index */
6908 I32 ewix = 0; /* explicit width index */
6909 I32 epix = 0; /* explicit precision index */
6910 I32 evix = 0; /* explicit vector index */
6911 bool asterisk = FALSE;
6913 /* echo everything up to the next format specification */
6914 for (q = p; q < patend && *q != '%'; ++q) ;
6916 sv_catpvn(sv, p, q - p);
6923 We allow format specification elements in this order:
6924 \d+\$ explicit format parameter index
6926 \*?(\d+\$)?v vector with optional (optionally specified) arg
6927 \d+|\*(\d+\$)? width using optional (optionally specified) arg
6928 \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg
6930 [%bcdefginopsux_DFOUX] format (mandatory)
6932 if (EXPECT_NUMBER(q, width)) {
6973 if (EXPECT_NUMBER(q, ewix))
6982 if ((vectorarg = asterisk)) {
6992 EXPECT_NUMBER(q, width);
6997 vecsv = va_arg(*args, SV*);
6999 vecsv = (evix ? evix <= svmax : svix < svmax) ?
7000 svargs[ewix ? ewix-1 : svix++] : &PL_sv_undef;
7001 dotstr = SvPVx(vecsv, dotstrlen);
7006 vecsv = va_arg(*args, SV*);
7007 vecstr = (U8*)SvPVx(vecsv,veclen);
7008 vec_utf = DO_UTF8(vecsv);
7010 else if (efix ? efix <= svmax : svix < svmax) {
7011 vecsv = svargs[efix ? efix-1 : svix++];
7012 vecstr = (U8*)SvPVx(vecsv,veclen);
7013 vec_utf = DO_UTF8(vecsv);
7023 i = va_arg(*args, int);
7025 i = (ewix ? ewix <= svmax : svix < svmax) ?
7026 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
7028 width = (i < 0) ? -i : i;
7038 if (EXPECT_NUMBER(q, epix) && *q++ != '$')
7041 i = va_arg(*args, int);
7043 i = (ewix ? ewix <= svmax : svix < svmax)
7044 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
7045 precis = (i < 0) ? 0 : i;
7050 precis = precis * 10 + (*q++ - '0');
7058 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
7069 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
7070 if (*(q + 1) == 'l') { /* lld, llf */
7093 argsv = (efix ? efix <= svmax : svix < svmax) ?
7094 svargs[efix ? efix-1 : svix++] : &PL_sv_undef;
7101 uv = args ? va_arg(*args, int) : SvIVx(argsv);
7102 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
7103 eptr = (char*)utf8buf;
7104 elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf;
7116 eptr = va_arg(*args, char*);
7118 #ifdef MACOS_TRADITIONAL
7119 /* On MacOS, %#s format is used for Pascal strings */
7124 elen = strlen(eptr);
7127 elen = sizeof nullstr - 1;
7131 eptr = SvPVx(argsv, elen);
7132 if (DO_UTF8(argsv)) {
7133 if (has_precis && precis < elen) {
7135 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
7138 if (width) { /* fudge width (can't fudge elen) */
7139 width += elen - sv_len_utf8(argsv);
7148 * The "%_" hack might have to be changed someday,
7149 * if ISO or ANSI decide to use '_' for something.
7150 * So we keep it hidden from users' code.
7154 argsv = va_arg(*args, SV*);
7155 eptr = SvPVx(argsv, elen);
7161 if (has_precis && elen > precis)
7170 uv = PTR2UV(args ? va_arg(*args, void*) : argsv);
7188 iv = (IV)utf8n_to_uvchr(vecstr, veclen, &ulen, 0);
7198 case 'h': iv = (short)va_arg(*args, int); break;
7199 default: iv = va_arg(*args, int); break;
7200 case 'l': iv = va_arg(*args, long); break;
7201 case 'V': iv = va_arg(*args, IV); break;
7203 case 'q': iv = va_arg(*args, Quad_t); break;
7210 case 'h': iv = (short)iv; break;
7212 case 'l': iv = (long)iv; break;
7215 case 'q': iv = (Quad_t)iv; break;
7222 esignbuf[esignlen++] = plus;
7226 esignbuf[esignlen++] = '-';
7268 uv = utf8n_to_uvchr(vecstr, veclen, &ulen, 0);
7278 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
7279 default: uv = va_arg(*args, unsigned); break;
7280 case 'l': uv = va_arg(*args, unsigned long); break;
7281 case 'V': uv = va_arg(*args, UV); break;
7283 case 'q': uv = va_arg(*args, Quad_t); break;
7290 case 'h': uv = (unsigned short)uv; break;
7292 case 'l': uv = (unsigned long)uv; break;
7295 case 'q': uv = (Quad_t)uv; break;
7301 eptr = ebuf + sizeof ebuf;
7307 p = (char*)((c == 'X')
7308 ? "0123456789ABCDEF" : "0123456789abcdef");
7314 esignbuf[esignlen++] = '0';
7315 esignbuf[esignlen++] = c; /* 'x' or 'X' */
7321 *--eptr = '0' + dig;
7323 if (alt && *eptr != '0')
7329 *--eptr = '0' + dig;
7332 esignbuf[esignlen++] = '0';
7333 esignbuf[esignlen++] = 'b';
7336 default: /* it had better be ten or less */
7337 #if defined(PERL_Y2KWARN)
7338 if (ckWARN(WARN_Y2K)) {
7340 char *s = SvPV(sv,n);
7341 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
7342 && (n == 2 || !isDIGIT(s[n-3])))
7344 Perl_warner(aTHX_ WARN_Y2K,
7345 "Possible Y2K bug: %%%c %s",
7346 c, "format string following '19'");
7352 *--eptr = '0' + dig;
7353 } while (uv /= base);
7356 elen = (ebuf + sizeof ebuf) - eptr;
7359 zeros = precis - elen;
7360 else if (precis == 0 && elen == 1 && *eptr == '0')
7365 /* FLOATING POINT */
7368 c = 'f'; /* maybe %F isn't supported here */
7374 /* This is evil, but floating point is even more evil */
7377 nv = args ? va_arg(*args, NV) : SvNVx(argsv);
7380 if (c != 'e' && c != 'E') {
7382 (void)Perl_frexp(nv, &i);
7383 if (i == PERL_INT_MIN)
7384 Perl_die(aTHX_ "panic: frexp");
7386 need = BIT_DIGITS(i);
7388 need += has_precis ? precis : 6; /* known default */
7392 need += 20; /* fudge factor */
7393 if (PL_efloatsize < need) {
7394 Safefree(PL_efloatbuf);
7395 PL_efloatsize = need + 20; /* more fudge */
7396 New(906, PL_efloatbuf, PL_efloatsize, char);
7397 PL_efloatbuf[0] = '\0';
7400 eptr = ebuf + sizeof ebuf;
7403 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
7405 /* Copy the one or more characters in a long double
7406 * format before the 'base' ([efgEFG]) character to
7407 * the format string. */
7408 static char const prifldbl[] = PERL_PRIfldbl;
7409 char const *p = prifldbl + sizeof(prifldbl) - 3;
7410 while (p >= prifldbl) { *--eptr = *p--; }
7415 do { *--eptr = '0' + (base % 10); } while (base /= 10);
7420 do { *--eptr = '0' + (base % 10); } while (base /= 10);
7432 /* No taint. Otherwise we are in the strange situation
7433 * where printf() taints but print($float) doesn't.
7435 (void)sprintf(PL_efloatbuf, eptr, nv);
7437 eptr = PL_efloatbuf;
7438 elen = strlen(PL_efloatbuf);
7445 i = SvCUR(sv) - origlen;
7448 case 'h': *(va_arg(*args, short*)) = i; break;
7449 default: *(va_arg(*args, int*)) = i; break;
7450 case 'l': *(va_arg(*args, long*)) = i; break;
7451 case 'V': *(va_arg(*args, IV*)) = i; break;
7453 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
7458 sv_setuv_mg(argsv, (UV)i);
7459 continue; /* not "break" */
7466 if (!args && ckWARN(WARN_PRINTF) &&
7467 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
7468 SV *msg = sv_newmortal();
7469 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
7470 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
7473 Perl_sv_catpvf(aTHX_ msg,
7474 "\"%%%c\"", c & 0xFF);
7476 Perl_sv_catpvf(aTHX_ msg,
7477 "\"%%\\%03"UVof"\"",
7480 sv_catpv(msg, "end of string");
7481 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
7484 /* output mangled stuff ... */
7490 /* ... right here, because formatting flags should not apply */
7491 SvGROW(sv, SvCUR(sv) + elen + 1);
7493 Copy(eptr, p, elen, char);
7496 SvCUR(sv) = p - SvPVX(sv);
7497 continue; /* not "break" */
7500 have = esignlen + zeros + elen;
7501 need = (have > width ? have : width);
7504 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
7506 if (esignlen && fill == '0') {
7507 for (i = 0; i < esignlen; i++)
7511 memset(p, fill, gap);
7514 if (esignlen && fill != '0') {
7515 for (i = 0; i < esignlen; i++)
7519 for (i = zeros; i; i--)
7523 Copy(eptr, p, elen, char);
7527 memset(p, ' ', gap);
7532 Copy(dotstr, p, dotstrlen, char);
7536 vectorize = FALSE; /* done iterating over vecstr */
7541 SvCUR(sv) = p - SvPVX(sv);
7549 #if defined(USE_ITHREADS)
7551 #if defined(USE_THREADS)
7552 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
7555 #ifndef GpREFCNT_inc
7556 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
7560 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
7561 #define av_dup(s) (AV*)sv_dup((SV*)s)
7562 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
7563 #define hv_dup(s) (HV*)sv_dup((SV*)s)
7564 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
7565 #define cv_dup(s) (CV*)sv_dup((SV*)s)
7566 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
7567 #define io_dup(s) (IO*)sv_dup((SV*)s)
7568 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
7569 #define gv_dup(s) (GV*)sv_dup((SV*)s)
7570 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
7571 #define SAVEPV(p) (p ? savepv(p) : Nullch)
7572 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
7575 Perl_re_dup(pTHX_ REGEXP *r)
7577 /* XXX fix when pmop->op_pmregexp becomes shared */
7578 return ReREFCNT_inc(r);
7582 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
7586 return (PerlIO*)NULL;
7588 /* look for it in the table first */
7589 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
7593 /* create anew and remember what it is */
7594 ret = PerlIO_fdupopen(aTHX_ fp);
7595 ptr_table_store(PL_ptr_table, fp, ret);
7600 Perl_dirp_dup(pTHX_ DIR *dp)
7609 Perl_gp_dup(pTHX_ GP *gp)
7614 /* look for it in the table first */
7615 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
7619 /* create anew and remember what it is */
7620 Newz(0, ret, 1, GP);
7621 ptr_table_store(PL_ptr_table, gp, ret);
7624 ret->gp_refcnt = 0; /* must be before any other dups! */
7625 ret->gp_sv = sv_dup_inc(gp->gp_sv);
7626 ret->gp_io = io_dup_inc(gp->gp_io);
7627 ret->gp_form = cv_dup_inc(gp->gp_form);
7628 ret->gp_av = av_dup_inc(gp->gp_av);
7629 ret->gp_hv = hv_dup_inc(gp->gp_hv);
7630 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
7631 ret->gp_cv = cv_dup_inc(gp->gp_cv);
7632 ret->gp_cvgen = gp->gp_cvgen;
7633 ret->gp_flags = gp->gp_flags;
7634 ret->gp_line = gp->gp_line;
7635 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
7640 Perl_mg_dup(pTHX_ MAGIC *mg)
7642 MAGIC *mgret = (MAGIC*)NULL;
7645 return (MAGIC*)NULL;
7646 /* look for it in the table first */
7647 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
7651 for (; mg; mg = mg->mg_moremagic) {
7653 Newz(0, nmg, 1, MAGIC);
7657 mgprev->mg_moremagic = nmg;
7658 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
7659 nmg->mg_private = mg->mg_private;
7660 nmg->mg_type = mg->mg_type;
7661 nmg->mg_flags = mg->mg_flags;
7662 if (mg->mg_type == 'r') {
7663 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
7666 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
7667 ? sv_dup_inc(mg->mg_obj)
7668 : sv_dup(mg->mg_obj);
7670 nmg->mg_len = mg->mg_len;
7671 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
7672 if (mg->mg_ptr && mg->mg_type != 'g') {
7673 if (mg->mg_len >= 0) {
7674 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
7675 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
7676 AMT *amtp = (AMT*)mg->mg_ptr;
7677 AMT *namtp = (AMT*)nmg->mg_ptr;
7679 for (i = 1; i < NofAMmeth; i++) {
7680 namtp->table[i] = cv_dup_inc(amtp->table[i]);
7684 else if (mg->mg_len == HEf_SVKEY)
7685 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
7693 Perl_ptr_table_new(pTHX)
7696 Newz(0, tbl, 1, PTR_TBL_t);
7699 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
7704 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
7706 PTR_TBL_ENT_t *tblent;
7707 UV hash = PTR2UV(sv);
7709 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
7710 for (; tblent; tblent = tblent->next) {
7711 if (tblent->oldval == sv)
7712 return tblent->newval;
7718 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
7720 PTR_TBL_ENT_t *tblent, **otblent;
7721 /* XXX this may be pessimal on platforms where pointers aren't good
7722 * hash values e.g. if they grow faster in the most significant
7724 UV hash = PTR2UV(oldv);
7728 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
7729 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
7730 if (tblent->oldval == oldv) {
7731 tblent->newval = newv;
7736 Newz(0, tblent, 1, PTR_TBL_ENT_t);
7737 tblent->oldval = oldv;
7738 tblent->newval = newv;
7739 tblent->next = *otblent;
7742 if (i && tbl->tbl_items > tbl->tbl_max)
7743 ptr_table_split(tbl);
7747 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
7749 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
7750 UV oldsize = tbl->tbl_max + 1;
7751 UV newsize = oldsize * 2;
7754 Renew(ary, newsize, PTR_TBL_ENT_t*);
7755 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
7756 tbl->tbl_max = --newsize;
7758 for (i=0; i < oldsize; i++, ary++) {
7759 PTR_TBL_ENT_t **curentp, **entp, *ent;
7762 curentp = ary + oldsize;
7763 for (entp = ary, ent = *ary; ent; ent = *entp) {
7764 if ((newsize & PTR2UV(ent->oldval)) != i) {
7766 ent->next = *curentp;
7777 Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl)
7779 register PTR_TBL_ENT_t **array;
7780 register PTR_TBL_ENT_t *entry;
7781 register PTR_TBL_ENT_t *oentry = Null(PTR_TBL_ENT_t*);
7785 if (!tbl || !tbl->tbl_items) {
7789 array = tbl->tbl_ary;
7796 entry = entry->next;
7800 if (++riter > max) {
7803 entry = array[riter];
7811 Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl)
7816 ptr_table_clear(tbl);
7817 Safefree(tbl->tbl_ary);
7826 S_gv_share(pTHX_ SV *sstr)
7829 SV *sv = &PL_sv_no; /* just need SvREADONLY-ness */
7831 if (GvIO(gv) || GvFORM(gv)) {
7832 GvSHARED_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */
7834 else if (!GvCV(gv)) {
7838 /* CvPADLISTs cannot be shared */
7839 if (!CvXSUB(GvCV(gv))) {
7844 if (!GvSHARED(gv)) {
7846 PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n",
7847 HvNAME(GvSTASH(gv)), GvNAME(gv));
7853 * write attempts will die with
7854 * "Modification of a read-only value attempted"
7860 SvREADONLY_on(GvSV(gv));
7867 SvREADONLY_on(GvAV(gv));
7874 SvREADONLY_on(GvAV(gv));
7877 return sstr; /* he_dup() will SvREFCNT_inc() */
7881 Perl_sv_dup(pTHX_ SV *sstr)
7885 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
7887 /* look for it in the table first */
7888 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
7892 /* create anew and remember what it is */
7894 ptr_table_store(PL_ptr_table, sstr, dstr);
7897 SvFLAGS(dstr) = SvFLAGS(sstr);
7898 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
7899 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7902 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7903 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7904 PL_watch_pvx, SvPVX(sstr));
7907 switch (SvTYPE(sstr)) {
7912 SvANY(dstr) = new_XIV();
7913 SvIVX(dstr) = SvIVX(sstr);
7916 SvANY(dstr) = new_XNV();
7917 SvNVX(dstr) = SvNVX(sstr);
7920 SvANY(dstr) = new_XRV();
7921 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7924 SvANY(dstr) = new_XPV();
7925 SvCUR(dstr) = SvCUR(sstr);
7926 SvLEN(dstr) = SvLEN(sstr);
7928 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7929 else if (SvPVX(sstr) && SvLEN(sstr))
7930 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7932 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7935 SvANY(dstr) = new_XPVIV();
7936 SvCUR(dstr) = SvCUR(sstr);
7937 SvLEN(dstr) = SvLEN(sstr);
7938 SvIVX(dstr) = SvIVX(sstr);
7940 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7941 else if (SvPVX(sstr) && SvLEN(sstr))
7942 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7944 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7947 SvANY(dstr) = new_XPVNV();
7948 SvCUR(dstr) = SvCUR(sstr);
7949 SvLEN(dstr) = SvLEN(sstr);
7950 SvIVX(dstr) = SvIVX(sstr);
7951 SvNVX(dstr) = SvNVX(sstr);
7953 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7954 else if (SvPVX(sstr) && SvLEN(sstr))
7955 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7957 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7960 SvANY(dstr) = new_XPVMG();
7961 SvCUR(dstr) = SvCUR(sstr);
7962 SvLEN(dstr) = SvLEN(sstr);
7963 SvIVX(dstr) = SvIVX(sstr);
7964 SvNVX(dstr) = SvNVX(sstr);
7965 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7966 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7968 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7969 else if (SvPVX(sstr) && SvLEN(sstr))
7970 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7972 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7975 SvANY(dstr) = new_XPVBM();
7976 SvCUR(dstr) = SvCUR(sstr);
7977 SvLEN(dstr) = SvLEN(sstr);
7978 SvIVX(dstr) = SvIVX(sstr);
7979 SvNVX(dstr) = SvNVX(sstr);
7980 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7981 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7983 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7984 else if (SvPVX(sstr) && SvLEN(sstr))
7985 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7987 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7988 BmRARE(dstr) = BmRARE(sstr);
7989 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7990 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7993 SvANY(dstr) = new_XPVLV();
7994 SvCUR(dstr) = SvCUR(sstr);
7995 SvLEN(dstr) = SvLEN(sstr);
7996 SvIVX(dstr) = SvIVX(sstr);
7997 SvNVX(dstr) = SvNVX(sstr);
7998 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7999 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8001 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
8002 else if (SvPVX(sstr) && SvLEN(sstr))
8003 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8005 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8006 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
8007 LvTARGLEN(dstr) = LvTARGLEN(sstr);
8008 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
8009 LvTYPE(dstr) = LvTYPE(sstr);
8012 if (GvSHARED((GV*)sstr)) {
8014 if ((share = gv_share(sstr))) {
8018 PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n",
8019 HvNAME(GvSTASH(share)), GvNAME(share));
8024 SvANY(dstr) = new_XPVGV();
8025 SvCUR(dstr) = SvCUR(sstr);
8026 SvLEN(dstr) = SvLEN(sstr);
8027 SvIVX(dstr) = SvIVX(sstr);
8028 SvNVX(dstr) = SvNVX(sstr);
8029 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8030 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8032 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
8033 else if (SvPVX(sstr) && SvLEN(sstr))
8034 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8036 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8037 GvNAMELEN(dstr) = GvNAMELEN(sstr);
8038 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
8039 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
8040 GvFLAGS(dstr) = GvFLAGS(sstr);
8041 GvGP(dstr) = gp_dup(GvGP(sstr));
8042 (void)GpREFCNT_inc(GvGP(dstr));
8045 SvANY(dstr) = new_XPVIO();
8046 SvCUR(dstr) = SvCUR(sstr);
8047 SvLEN(dstr) = SvLEN(sstr);
8048 SvIVX(dstr) = SvIVX(sstr);
8049 SvNVX(dstr) = SvNVX(sstr);
8050 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8051 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8053 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
8054 else if (SvPVX(sstr) && SvLEN(sstr))
8055 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8057 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8058 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
8059 if (IoOFP(sstr) == IoIFP(sstr))
8060 IoOFP(dstr) = IoIFP(dstr);
8062 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
8063 /* PL_rsfp_filters entries have fake IoDIRP() */
8064 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
8065 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
8067 IoDIRP(dstr) = IoDIRP(sstr);
8068 IoLINES(dstr) = IoLINES(sstr);
8069 IoPAGE(dstr) = IoPAGE(sstr);
8070 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
8071 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
8072 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
8073 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
8074 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
8075 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
8076 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
8077 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
8078 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
8079 IoTYPE(dstr) = IoTYPE(sstr);
8080 IoFLAGS(dstr) = IoFLAGS(sstr);
8083 SvANY(dstr) = new_XPVAV();
8084 SvCUR(dstr) = SvCUR(sstr);
8085 SvLEN(dstr) = SvLEN(sstr);
8086 SvIVX(dstr) = SvIVX(sstr);
8087 SvNVX(dstr) = SvNVX(sstr);
8088 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8089 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8090 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
8091 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
8092 if (AvARRAY((AV*)sstr)) {
8093 SV **dst_ary, **src_ary;
8094 SSize_t items = AvFILLp((AV*)sstr) + 1;
8096 src_ary = AvARRAY((AV*)sstr);
8097 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
8098 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
8099 SvPVX(dstr) = (char*)dst_ary;
8100 AvALLOC((AV*)dstr) = dst_ary;
8101 if (AvREAL((AV*)sstr)) {
8103 *dst_ary++ = sv_dup_inc(*src_ary++);
8107 *dst_ary++ = sv_dup(*src_ary++);
8109 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
8110 while (items-- > 0) {
8111 *dst_ary++ = &PL_sv_undef;
8115 SvPVX(dstr) = Nullch;
8116 AvALLOC((AV*)dstr) = (SV**)NULL;
8120 SvANY(dstr) = new_XPVHV();
8121 SvCUR(dstr) = SvCUR(sstr);
8122 SvLEN(dstr) = SvLEN(sstr);
8123 SvIVX(dstr) = SvIVX(sstr);
8124 SvNVX(dstr) = SvNVX(sstr);
8125 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8126 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8127 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
8128 if (HvARRAY((HV*)sstr)) {
8130 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
8131 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
8132 Newz(0, dxhv->xhv_array,
8133 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
8134 while (i <= sxhv->xhv_max) {
8135 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
8136 !!HvSHAREKEYS(sstr));
8139 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
8142 SvPVX(dstr) = Nullch;
8143 HvEITER((HV*)dstr) = (HE*)NULL;
8145 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
8146 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
8149 SvANY(dstr) = new_XPVFM();
8150 FmLINES(dstr) = FmLINES(sstr);
8154 SvANY(dstr) = new_XPVCV();
8156 SvCUR(dstr) = SvCUR(sstr);
8157 SvLEN(dstr) = SvLEN(sstr);
8158 SvIVX(dstr) = SvIVX(sstr);
8159 SvNVX(dstr) = SvNVX(sstr);
8160 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8161 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8162 if (SvPVX(sstr) && SvLEN(sstr))
8163 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8165 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8166 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
8167 CvSTART(dstr) = CvSTART(sstr);
8168 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
8169 CvXSUB(dstr) = CvXSUB(sstr);
8170 CvXSUBANY(dstr) = CvXSUBANY(sstr);
8171 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
8172 CvDEPTH(dstr) = CvDEPTH(sstr);
8173 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
8174 /* XXX padlists are real, but pretend to be not */
8175 AvREAL_on(CvPADLIST(sstr));
8176 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
8177 AvREAL_off(CvPADLIST(sstr));
8178 AvREAL_off(CvPADLIST(dstr));
8181 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
8182 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
8183 CvFLAGS(dstr) = CvFLAGS(sstr);
8186 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
8190 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
8197 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
8202 return (PERL_CONTEXT*)NULL;
8204 /* look for it in the table first */
8205 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
8209 /* create anew and remember what it is */
8210 Newz(56, ncxs, max + 1, PERL_CONTEXT);
8211 ptr_table_store(PL_ptr_table, cxs, ncxs);
8214 PERL_CONTEXT *cx = &cxs[ix];
8215 PERL_CONTEXT *ncx = &ncxs[ix];
8216 ncx->cx_type = cx->cx_type;
8217 if (CxTYPE(cx) == CXt_SUBST) {
8218 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
8221 ncx->blk_oldsp = cx->blk_oldsp;
8222 ncx->blk_oldcop = cx->blk_oldcop;
8223 ncx->blk_oldretsp = cx->blk_oldretsp;
8224 ncx->blk_oldmarksp = cx->blk_oldmarksp;
8225 ncx->blk_oldscopesp = cx->blk_oldscopesp;
8226 ncx->blk_oldpm = cx->blk_oldpm;
8227 ncx->blk_gimme = cx->blk_gimme;
8228 switch (CxTYPE(cx)) {
8230 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
8231 ? cv_dup_inc(cx->blk_sub.cv)
8232 : cv_dup(cx->blk_sub.cv));
8233 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
8234 ? av_dup_inc(cx->blk_sub.argarray)
8236 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
8237 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
8238 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
8239 ncx->blk_sub.lval = cx->blk_sub.lval;
8242 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
8243 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
8244 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
8245 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
8246 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
8249 ncx->blk_loop.label = cx->blk_loop.label;
8250 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
8251 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
8252 ncx->blk_loop.next_op = cx->blk_loop.next_op;
8253 ncx->blk_loop.last_op = cx->blk_loop.last_op;
8254 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
8255 ? cx->blk_loop.iterdata
8256 : gv_dup((GV*)cx->blk_loop.iterdata));
8257 ncx->blk_loop.oldcurpad
8258 = (SV**)ptr_table_fetch(PL_ptr_table,
8259 cx->blk_loop.oldcurpad);
8260 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
8261 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
8262 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
8263 ncx->blk_loop.iterix = cx->blk_loop.iterix;
8264 ncx->blk_loop.itermax = cx->blk_loop.itermax;
8267 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
8268 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
8269 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
8270 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
8283 Perl_si_dup(pTHX_ PERL_SI *si)
8288 return (PERL_SI*)NULL;
8290 /* look for it in the table first */
8291 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
8295 /* create anew and remember what it is */
8296 Newz(56, nsi, 1, PERL_SI);
8297 ptr_table_store(PL_ptr_table, si, nsi);
8299 nsi->si_stack = av_dup_inc(si->si_stack);
8300 nsi->si_cxix = si->si_cxix;
8301 nsi->si_cxmax = si->si_cxmax;
8302 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
8303 nsi->si_type = si->si_type;
8304 nsi->si_prev = si_dup(si->si_prev);
8305 nsi->si_next = si_dup(si->si_next);
8306 nsi->si_markoff = si->si_markoff;
8311 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
8312 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
8313 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
8314 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
8315 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
8316 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
8317 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
8318 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
8319 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
8320 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
8321 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
8322 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
8325 #define pv_dup_inc(p) SAVEPV(p)
8326 #define pv_dup(p) SAVEPV(p)
8327 #define svp_dup_inc(p,pp) any_dup(p,pp)
8330 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
8337 /* look for it in the table first */
8338 ret = ptr_table_fetch(PL_ptr_table, v);
8342 /* see if it is part of the interpreter structure */
8343 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
8344 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
8352 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
8354 ANY *ss = proto_perl->Tsavestack;
8355 I32 ix = proto_perl->Tsavestack_ix;
8356 I32 max = proto_perl->Tsavestack_max;
8369 void (*dptr) (void*);
8370 void (*dxptr) (pTHXo_ void*);
8373 Newz(54, nss, max, ANY);
8379 case SAVEt_ITEM: /* normal string */
8380 sv = (SV*)POPPTR(ss,ix);
8381 TOPPTR(nss,ix) = sv_dup_inc(sv);
8382 sv = (SV*)POPPTR(ss,ix);
8383 TOPPTR(nss,ix) = sv_dup_inc(sv);
8385 case SAVEt_SV: /* scalar reference */
8386 sv = (SV*)POPPTR(ss,ix);
8387 TOPPTR(nss,ix) = sv_dup_inc(sv);
8388 gv = (GV*)POPPTR(ss,ix);
8389 TOPPTR(nss,ix) = gv_dup_inc(gv);
8391 case SAVEt_GENERIC_PVREF: /* generic char* */
8392 c = (char*)POPPTR(ss,ix);
8393 TOPPTR(nss,ix) = pv_dup(c);
8394 ptr = POPPTR(ss,ix);
8395 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8397 case SAVEt_GENERIC_SVREF: /* generic sv */
8398 case SAVEt_SVREF: /* scalar reference */
8399 sv = (SV*)POPPTR(ss,ix);
8400 TOPPTR(nss,ix) = sv_dup_inc(sv);
8401 ptr = POPPTR(ss,ix);
8402 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
8404 case SAVEt_AV: /* array reference */
8405 av = (AV*)POPPTR(ss,ix);
8406 TOPPTR(nss,ix) = av_dup_inc(av);
8407 gv = (GV*)POPPTR(ss,ix);
8408 TOPPTR(nss,ix) = gv_dup(gv);
8410 case SAVEt_HV: /* hash reference */
8411 hv = (HV*)POPPTR(ss,ix);
8412 TOPPTR(nss,ix) = hv_dup_inc(hv);
8413 gv = (GV*)POPPTR(ss,ix);
8414 TOPPTR(nss,ix) = gv_dup(gv);
8416 case SAVEt_INT: /* int reference */
8417 ptr = POPPTR(ss,ix);
8418 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8419 intval = (int)POPINT(ss,ix);
8420 TOPINT(nss,ix) = intval;
8422 case SAVEt_LONG: /* long reference */
8423 ptr = POPPTR(ss,ix);
8424 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8425 longval = (long)POPLONG(ss,ix);
8426 TOPLONG(nss,ix) = longval;
8428 case SAVEt_I32: /* I32 reference */
8429 case SAVEt_I16: /* I16 reference */
8430 case SAVEt_I8: /* I8 reference */
8431 ptr = POPPTR(ss,ix);
8432 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8436 case SAVEt_IV: /* IV reference */
8437 ptr = POPPTR(ss,ix);
8438 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8442 case SAVEt_SPTR: /* SV* reference */
8443 ptr = POPPTR(ss,ix);
8444 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8445 sv = (SV*)POPPTR(ss,ix);
8446 TOPPTR(nss,ix) = sv_dup(sv);
8448 case SAVEt_VPTR: /* random* reference */
8449 ptr = POPPTR(ss,ix);
8450 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8451 ptr = POPPTR(ss,ix);
8452 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8454 case SAVEt_PPTR: /* char* reference */
8455 ptr = POPPTR(ss,ix);
8456 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8457 c = (char*)POPPTR(ss,ix);
8458 TOPPTR(nss,ix) = pv_dup(c);
8460 case SAVEt_HPTR: /* HV* reference */
8461 ptr = POPPTR(ss,ix);
8462 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8463 hv = (HV*)POPPTR(ss,ix);
8464 TOPPTR(nss,ix) = hv_dup(hv);
8466 case SAVEt_APTR: /* AV* reference */
8467 ptr = POPPTR(ss,ix);
8468 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8469 av = (AV*)POPPTR(ss,ix);
8470 TOPPTR(nss,ix) = av_dup(av);
8473 gv = (GV*)POPPTR(ss,ix);
8474 TOPPTR(nss,ix) = gv_dup(gv);
8476 case SAVEt_GP: /* scalar reference */
8477 gp = (GP*)POPPTR(ss,ix);
8478 TOPPTR(nss,ix) = gp = gp_dup(gp);
8479 (void)GpREFCNT_inc(gp);
8480 gv = (GV*)POPPTR(ss,ix);
8481 TOPPTR(nss,ix) = gv_dup_inc(c);
8482 c = (char*)POPPTR(ss,ix);
8483 TOPPTR(nss,ix) = pv_dup(c);
8490 sv = (SV*)POPPTR(ss,ix);
8491 TOPPTR(nss,ix) = sv_dup_inc(sv);
8494 ptr = POPPTR(ss,ix);
8495 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
8496 /* these are assumed to be refcounted properly */
8497 switch (((OP*)ptr)->op_type) {
8504 TOPPTR(nss,ix) = ptr;
8509 TOPPTR(nss,ix) = Nullop;
8514 TOPPTR(nss,ix) = Nullop;
8517 c = (char*)POPPTR(ss,ix);
8518 TOPPTR(nss,ix) = pv_dup_inc(c);
8521 longval = POPLONG(ss,ix);
8522 TOPLONG(nss,ix) = longval;
8525 hv = (HV*)POPPTR(ss,ix);
8526 TOPPTR(nss,ix) = hv_dup_inc(hv);
8527 c = (char*)POPPTR(ss,ix);
8528 TOPPTR(nss,ix) = pv_dup_inc(c);
8532 case SAVEt_DESTRUCTOR:
8533 ptr = POPPTR(ss,ix);
8534 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
8535 dptr = POPDPTR(ss,ix);
8536 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
8538 case SAVEt_DESTRUCTOR_X:
8539 ptr = POPPTR(ss,ix);
8540 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
8541 dxptr = POPDXPTR(ss,ix);
8542 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
8544 case SAVEt_REGCONTEXT:
8550 case SAVEt_STACK_POS: /* Position on Perl stack */
8554 case SAVEt_AELEM: /* array element */
8555 sv = (SV*)POPPTR(ss,ix);
8556 TOPPTR(nss,ix) = sv_dup_inc(sv);
8559 av = (AV*)POPPTR(ss,ix);
8560 TOPPTR(nss,ix) = av_dup_inc(av);
8562 case SAVEt_HELEM: /* hash element */
8563 sv = (SV*)POPPTR(ss,ix);
8564 TOPPTR(nss,ix) = sv_dup_inc(sv);
8565 sv = (SV*)POPPTR(ss,ix);
8566 TOPPTR(nss,ix) = sv_dup_inc(sv);
8567 hv = (HV*)POPPTR(ss,ix);
8568 TOPPTR(nss,ix) = hv_dup_inc(hv);
8571 ptr = POPPTR(ss,ix);
8572 TOPPTR(nss,ix) = ptr;
8579 av = (AV*)POPPTR(ss,ix);
8580 TOPPTR(nss,ix) = av_dup(av);
8583 longval = (long)POPLONG(ss,ix);
8584 TOPLONG(nss,ix) = longval;
8585 ptr = POPPTR(ss,ix);
8586 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8587 sv = (SV*)POPPTR(ss,ix);
8588 TOPPTR(nss,ix) = sv_dup(sv);
8591 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
8603 perl_clone(PerlInterpreter *proto_perl, UV flags)
8606 CPerlObj *pPerl = (CPerlObj*)proto_perl;
8609 #ifdef PERL_IMPLICIT_SYS
8610 return perl_clone_using(proto_perl, flags,
8612 proto_perl->IMemShared,
8613 proto_perl->IMemParse,
8623 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
8624 struct IPerlMem* ipM, struct IPerlMem* ipMS,
8625 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
8626 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
8627 struct IPerlDir* ipD, struct IPerlSock* ipS,
8628 struct IPerlProc* ipP)
8630 /* XXX many of the string copies here can be optimized if they're
8631 * constants; they need to be allocated as common memory and just
8632 * their pointers copied. */
8636 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
8638 PERL_SET_THX(pPerl);
8639 # else /* !PERL_OBJECT */
8640 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
8641 PERL_SET_THX(my_perl);
8644 memset(my_perl, 0xab, sizeof(PerlInterpreter));
8650 # else /* !DEBUGGING */
8651 Zero(my_perl, 1, PerlInterpreter);
8652 # endif /* DEBUGGING */
8656 PL_MemShared = ipMS;
8664 # endif /* PERL_OBJECT */
8665 #else /* !PERL_IMPLICIT_SYS */
8667 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
8668 PERL_SET_THX(my_perl);
8671 memset(my_perl, 0xab, sizeof(PerlInterpreter));
8677 # else /* !DEBUGGING */
8678 Zero(my_perl, 1, PerlInterpreter);
8679 # endif /* DEBUGGING */
8680 #endif /* PERL_IMPLICIT_SYS */
8683 PL_xiv_arenaroot = NULL;
8685 PL_xnv_arenaroot = NULL;
8687 PL_xrv_arenaroot = NULL;
8689 PL_xpv_arenaroot = NULL;
8691 PL_xpviv_arenaroot = NULL;
8692 PL_xpviv_root = NULL;
8693 PL_xpvnv_arenaroot = NULL;
8694 PL_xpvnv_root = NULL;
8695 PL_xpvcv_arenaroot = NULL;
8696 PL_xpvcv_root = NULL;
8697 PL_xpvav_arenaroot = NULL;
8698 PL_xpvav_root = NULL;
8699 PL_xpvhv_arenaroot = NULL;
8700 PL_xpvhv_root = NULL;
8701 PL_xpvmg_arenaroot = NULL;
8702 PL_xpvmg_root = NULL;
8703 PL_xpvlv_arenaroot = NULL;
8704 PL_xpvlv_root = NULL;
8705 PL_xpvbm_arenaroot = NULL;
8706 PL_xpvbm_root = NULL;
8707 PL_he_arenaroot = NULL;
8709 PL_nice_chunk = NULL;
8710 PL_nice_chunk_size = 0;
8713 PL_sv_root = Nullsv;
8714 PL_sv_arenaroot = Nullsv;
8716 PL_debug = proto_perl->Idebug;
8718 /* create SV map for pointer relocation */
8719 PL_ptr_table = ptr_table_new();
8721 /* initialize these special pointers as early as possible */
8722 SvANY(&PL_sv_undef) = NULL;
8723 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
8724 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
8725 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
8728 SvUPGRADE(&PL_sv_no, SVt_PVNV);
8730 SvANY(&PL_sv_no) = new_XPVNV();
8732 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
8733 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
8734 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
8735 SvCUR(&PL_sv_no) = 0;
8736 SvLEN(&PL_sv_no) = 1;
8737 SvNVX(&PL_sv_no) = 0;
8738 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
8741 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
8743 SvANY(&PL_sv_yes) = new_XPVNV();
8745 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
8746 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
8747 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
8748 SvCUR(&PL_sv_yes) = 1;
8749 SvLEN(&PL_sv_yes) = 2;
8750 SvNVX(&PL_sv_yes) = 1;
8751 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
8753 /* create shared string table */
8754 PL_strtab = newHV();
8755 HvSHAREKEYS_off(PL_strtab);
8756 hv_ksplit(PL_strtab, 512);
8757 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
8759 PL_compiling = proto_perl->Icompiling;
8760 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
8761 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
8762 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
8763 if (!specialWARN(PL_compiling.cop_warnings))
8764 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
8765 if (!specialCopIO(PL_compiling.cop_io))
8766 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
8767 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
8769 /* pseudo environmental stuff */
8770 PL_origargc = proto_perl->Iorigargc;
8772 New(0, PL_origargv, i+1, char*);
8773 PL_origargv[i] = '\0';
8775 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
8777 PL_envgv = gv_dup(proto_perl->Ienvgv);
8778 PL_incgv = gv_dup(proto_perl->Iincgv);
8779 PL_hintgv = gv_dup(proto_perl->Ihintgv);
8780 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
8781 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
8782 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
8785 PL_minus_c = proto_perl->Iminus_c;
8786 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
8787 PL_localpatches = proto_perl->Ilocalpatches;
8788 PL_splitstr = proto_perl->Isplitstr;
8789 PL_preprocess = proto_perl->Ipreprocess;
8790 PL_minus_n = proto_perl->Iminus_n;
8791 PL_minus_p = proto_perl->Iminus_p;
8792 PL_minus_l = proto_perl->Iminus_l;
8793 PL_minus_a = proto_perl->Iminus_a;
8794 PL_minus_F = proto_perl->Iminus_F;
8795 PL_doswitches = proto_perl->Idoswitches;
8796 PL_dowarn = proto_perl->Idowarn;
8797 PL_doextract = proto_perl->Idoextract;
8798 PL_sawampersand = proto_perl->Isawampersand;
8799 PL_unsafe = proto_perl->Iunsafe;
8800 PL_inplace = SAVEPV(proto_perl->Iinplace);
8801 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
8802 PL_perldb = proto_perl->Iperldb;
8803 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
8805 /* magical thingies */
8806 /* XXX time(&PL_basetime) when asked for? */
8807 PL_basetime = proto_perl->Ibasetime;
8808 PL_formfeed = sv_dup(proto_perl->Iformfeed);
8810 PL_maxsysfd = proto_perl->Imaxsysfd;
8811 PL_multiline = proto_perl->Imultiline;
8812 PL_statusvalue = proto_perl->Istatusvalue;
8814 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
8817 /* shortcuts to various I/O objects */
8818 PL_stdingv = gv_dup(proto_perl->Istdingv);
8819 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
8820 PL_defgv = gv_dup(proto_perl->Idefgv);
8821 PL_argvgv = gv_dup(proto_perl->Iargvgv);
8822 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
8823 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
8825 /* shortcuts to regexp stuff */
8826 PL_replgv = gv_dup(proto_perl->Ireplgv);
8828 /* shortcuts to misc objects */
8829 PL_errgv = gv_dup(proto_perl->Ierrgv);
8831 /* shortcuts to debugging objects */
8832 PL_DBgv = gv_dup(proto_perl->IDBgv);
8833 PL_DBline = gv_dup(proto_perl->IDBline);
8834 PL_DBsub = gv_dup(proto_perl->IDBsub);
8835 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
8836 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
8837 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
8838 PL_lineary = av_dup(proto_perl->Ilineary);
8839 PL_dbargs = av_dup(proto_perl->Idbargs);
8842 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
8843 PL_curstash = hv_dup(proto_perl->Tcurstash);
8844 PL_debstash = hv_dup(proto_perl->Idebstash);
8845 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
8846 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
8848 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
8849 PL_endav = av_dup_inc(proto_perl->Iendav);
8850 PL_checkav = av_dup_inc(proto_perl->Icheckav);
8851 PL_initav = av_dup_inc(proto_perl->Iinitav);
8853 PL_sub_generation = proto_perl->Isub_generation;
8855 /* funky return mechanisms */
8856 PL_forkprocess = proto_perl->Iforkprocess;
8858 /* subprocess state */
8859 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
8861 /* internal state */
8862 PL_tainting = proto_perl->Itainting;
8863 PL_maxo = proto_perl->Imaxo;
8864 if (proto_perl->Iop_mask)
8865 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
8867 PL_op_mask = Nullch;
8869 /* current interpreter roots */
8870 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
8871 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
8872 PL_main_start = proto_perl->Imain_start;
8873 PL_eval_root = proto_perl->Ieval_root;
8874 PL_eval_start = proto_perl->Ieval_start;
8876 /* runtime control stuff */
8877 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
8878 PL_copline = proto_perl->Icopline;
8880 PL_filemode = proto_perl->Ifilemode;
8881 PL_lastfd = proto_perl->Ilastfd;
8882 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
8885 PL_gensym = proto_perl->Igensym;
8886 PL_preambled = proto_perl->Ipreambled;
8887 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
8888 PL_laststatval = proto_perl->Ilaststatval;
8889 PL_laststype = proto_perl->Ilaststype;
8890 PL_mess_sv = Nullsv;
8892 PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv);
8893 PL_ofmt = SAVEPV(proto_perl->Iofmt);
8895 /* interpreter atexit processing */
8896 PL_exitlistlen = proto_perl->Iexitlistlen;
8897 if (PL_exitlistlen) {
8898 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8899 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8902 PL_exitlist = (PerlExitListEntry*)NULL;
8903 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
8905 PL_profiledata = NULL;
8906 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
8907 /* PL_rsfp_filters entries have fake IoDIRP() */
8908 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
8910 PL_compcv = cv_dup(proto_perl->Icompcv);
8911 PL_comppad = av_dup(proto_perl->Icomppad);
8912 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
8913 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
8914 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8915 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8916 proto_perl->Tcurpad);
8918 #ifdef HAVE_INTERP_INTERN
8919 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8922 /* more statics moved here */
8923 PL_generation = proto_perl->Igeneration;
8924 PL_DBcv = cv_dup(proto_perl->IDBcv);
8926 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8927 PL_in_clean_all = proto_perl->Iin_clean_all;
8929 PL_uid = proto_perl->Iuid;
8930 PL_euid = proto_perl->Ieuid;
8931 PL_gid = proto_perl->Igid;
8932 PL_egid = proto_perl->Iegid;
8933 PL_nomemok = proto_perl->Inomemok;
8934 PL_an = proto_perl->Ian;
8935 PL_cop_seqmax = proto_perl->Icop_seqmax;
8936 PL_op_seqmax = proto_perl->Iop_seqmax;
8937 PL_evalseq = proto_perl->Ievalseq;
8938 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8939 PL_origalen = proto_perl->Iorigalen;
8940 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8941 PL_osname = SAVEPV(proto_perl->Iosname);
8942 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8943 PL_sighandlerp = proto_perl->Isighandlerp;
8946 PL_runops = proto_perl->Irunops;
8948 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8951 PL_cshlen = proto_perl->Icshlen;
8952 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8955 PL_lex_state = proto_perl->Ilex_state;
8956 PL_lex_defer = proto_perl->Ilex_defer;
8957 PL_lex_expect = proto_perl->Ilex_expect;
8958 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8959 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8960 PL_lex_starts = proto_perl->Ilex_starts;
8961 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8962 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8963 PL_lex_op = proto_perl->Ilex_op;
8964 PL_lex_inpat = proto_perl->Ilex_inpat;
8965 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8966 PL_lex_brackets = proto_perl->Ilex_brackets;
8967 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8968 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8969 PL_lex_casemods = proto_perl->Ilex_casemods;
8970 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8971 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8973 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8974 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8975 PL_nexttoke = proto_perl->Inexttoke;
8977 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8978 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8979 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8980 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8981 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8982 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8983 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8984 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8985 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8986 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8987 PL_pending_ident = proto_perl->Ipending_ident;
8988 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8990 PL_expect = proto_perl->Iexpect;
8992 PL_multi_start = proto_perl->Imulti_start;
8993 PL_multi_end = proto_perl->Imulti_end;
8994 PL_multi_open = proto_perl->Imulti_open;
8995 PL_multi_close = proto_perl->Imulti_close;
8997 PL_error_count = proto_perl->Ierror_count;
8998 PL_subline = proto_perl->Isubline;
8999 PL_subname = sv_dup_inc(proto_perl->Isubname);
9001 PL_min_intro_pending = proto_perl->Imin_intro_pending;
9002 PL_max_intro_pending = proto_perl->Imax_intro_pending;
9003 PL_padix = proto_perl->Ipadix;
9004 PL_padix_floor = proto_perl->Ipadix_floor;
9005 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
9007 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
9008 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
9009 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
9010 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
9011 PL_last_lop_op = proto_perl->Ilast_lop_op;
9012 PL_in_my = proto_perl->Iin_my;
9013 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
9015 PL_cryptseen = proto_perl->Icryptseen;
9018 PL_hints = proto_perl->Ihints;
9020 PL_amagic_generation = proto_perl->Iamagic_generation;
9022 #ifdef USE_LOCALE_COLLATE
9023 PL_collation_ix = proto_perl->Icollation_ix;
9024 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
9025 PL_collation_standard = proto_perl->Icollation_standard;
9026 PL_collxfrm_base = proto_perl->Icollxfrm_base;
9027 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
9028 #endif /* USE_LOCALE_COLLATE */
9030 #ifdef USE_LOCALE_NUMERIC
9031 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
9032 PL_numeric_standard = proto_perl->Inumeric_standard;
9033 PL_numeric_local = proto_perl->Inumeric_local;
9034 PL_numeric_radix = sv_dup_inc(proto_perl->Inumeric_radix);
9035 #endif /* !USE_LOCALE_NUMERIC */
9037 /* utf8 character classes */
9038 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
9039 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
9040 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
9041 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
9042 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
9043 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
9044 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
9045 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
9046 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
9047 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
9048 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
9049 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
9050 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
9051 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
9052 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
9053 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
9054 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
9057 PL_last_swash_hv = Nullhv; /* reinits on demand */
9058 PL_last_swash_klen = 0;
9059 PL_last_swash_key[0]= '\0';
9060 PL_last_swash_tmps = (U8*)NULL;
9061 PL_last_swash_slen = 0;
9063 /* perly.c globals */
9064 PL_yydebug = proto_perl->Iyydebug;
9065 PL_yynerrs = proto_perl->Iyynerrs;
9066 PL_yyerrflag = proto_perl->Iyyerrflag;
9067 PL_yychar = proto_perl->Iyychar;
9068 PL_yyval = proto_perl->Iyyval;
9069 PL_yylval = proto_perl->Iyylval;
9071 PL_glob_index = proto_perl->Iglob_index;
9072 PL_srand_called = proto_perl->Isrand_called;
9073 PL_uudmap['M'] = 0; /* reinits on demand */
9074 PL_bitcount = Nullch; /* reinits on demand */
9076 if (proto_perl->Ipsig_pend) {
9077 Newz(0, PL_psig_pend, SIG_SIZE, int);
9080 PL_psig_pend = (int*)NULL;
9083 if (proto_perl->Ipsig_ptr) {
9084 Newz(0, PL_psig_ptr, SIG_SIZE, SV*);
9085 Newz(0, PL_psig_name, SIG_SIZE, SV*);
9086 for (i = 1; i < SIG_SIZE; i++) {
9087 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
9088 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
9092 PL_psig_ptr = (SV**)NULL;
9093 PL_psig_name = (SV**)NULL;
9096 /* thrdvar.h stuff */
9098 if (flags & CLONEf_COPY_STACKS) {
9099 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
9100 PL_tmps_ix = proto_perl->Ttmps_ix;
9101 PL_tmps_max = proto_perl->Ttmps_max;
9102 PL_tmps_floor = proto_perl->Ttmps_floor;
9103 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
9105 while (i <= PL_tmps_ix) {
9106 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
9110 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
9111 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
9112 Newz(54, PL_markstack, i, I32);
9113 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
9114 - proto_perl->Tmarkstack);
9115 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
9116 - proto_perl->Tmarkstack);
9117 Copy(proto_perl->Tmarkstack, PL_markstack,
9118 PL_markstack_ptr - PL_markstack + 1, I32);
9120 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
9121 * NOTE: unlike the others! */
9122 PL_scopestack_ix = proto_perl->Tscopestack_ix;
9123 PL_scopestack_max = proto_perl->Tscopestack_max;
9124 Newz(54, PL_scopestack, PL_scopestack_max, I32);
9125 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
9127 /* next push_return() sets PL_retstack[PL_retstack_ix]
9128 * NOTE: unlike the others! */
9129 PL_retstack_ix = proto_perl->Tretstack_ix;
9130 PL_retstack_max = proto_perl->Tretstack_max;
9131 Newz(54, PL_retstack, PL_retstack_max, OP*);
9132 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
9134 /* NOTE: si_dup() looks at PL_markstack */
9135 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
9137 /* PL_curstack = PL_curstackinfo->si_stack; */
9138 PL_curstack = av_dup(proto_perl->Tcurstack);
9139 PL_mainstack = av_dup(proto_perl->Tmainstack);
9141 /* next PUSHs() etc. set *(PL_stack_sp+1) */
9142 PL_stack_base = AvARRAY(PL_curstack);
9143 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
9144 - proto_perl->Tstack_base);
9145 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
9147 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
9148 * NOTE: unlike the others! */
9149 PL_savestack_ix = proto_perl->Tsavestack_ix;
9150 PL_savestack_max = proto_perl->Tsavestack_max;
9151 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
9152 PL_savestack = ss_dup(proto_perl);
9156 ENTER; /* perl_destruct() wants to LEAVE; */
9159 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
9160 PL_top_env = &PL_start_env;
9162 PL_op = proto_perl->Top;
9165 PL_Xpv = (XPV*)NULL;
9166 PL_na = proto_perl->Tna;
9168 PL_statbuf = proto_perl->Tstatbuf;
9169 PL_statcache = proto_perl->Tstatcache;
9170 PL_statgv = gv_dup(proto_perl->Tstatgv);
9171 PL_statname = sv_dup_inc(proto_perl->Tstatname);
9173 PL_timesbuf = proto_perl->Ttimesbuf;
9176 PL_tainted = proto_perl->Ttainted;
9177 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
9178 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
9179 PL_rs = sv_dup_inc(proto_perl->Trs);
9180 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
9181 PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv);
9182 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
9183 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
9184 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
9185 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
9186 PL_formtarget = sv_dup(proto_perl->Tformtarget);
9188 PL_restartop = proto_perl->Trestartop;
9189 PL_in_eval = proto_perl->Tin_eval;
9190 PL_delaymagic = proto_perl->Tdelaymagic;
9191 PL_dirty = proto_perl->Tdirty;
9192 PL_localizing = proto_perl->Tlocalizing;
9194 #ifdef PERL_FLEXIBLE_EXCEPTIONS
9195 PL_protect = proto_perl->Tprotect;
9197 PL_errors = sv_dup_inc(proto_perl->Terrors);
9198 PL_av_fetch_sv = Nullsv;
9199 PL_hv_fetch_sv = Nullsv;
9200 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
9201 PL_modcount = proto_perl->Tmodcount;
9202 PL_lastgotoprobe = Nullop;
9203 PL_dumpindent = proto_perl->Tdumpindent;
9205 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
9206 PL_sortstash = hv_dup(proto_perl->Tsortstash);
9207 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
9208 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
9209 PL_sortcxix = proto_perl->Tsortcxix;
9210 PL_efloatbuf = Nullch; /* reinits on demand */
9211 PL_efloatsize = 0; /* reinits on demand */
9215 PL_screamfirst = NULL;
9216 PL_screamnext = NULL;
9217 PL_maxscream = -1; /* reinits on demand */
9218 PL_lastscream = Nullsv;
9220 PL_watchaddr = NULL;
9221 PL_watchok = Nullch;
9223 PL_regdummy = proto_perl->Tregdummy;
9224 PL_regcomp_parse = Nullch;
9225 PL_regxend = Nullch;
9226 PL_regcode = (regnode*)NULL;
9229 PL_regprecomp = Nullch;
9234 PL_seen_zerolen = 0;
9236 PL_regcomp_rx = (regexp*)NULL;
9238 PL_colorset = 0; /* reinits PL_colors[] */
9239 /*PL_colors[6] = {0,0,0,0,0,0};*/
9240 PL_reg_whilem_seen = 0;
9241 PL_reginput = Nullch;
9244 PL_regstartp = (I32*)NULL;
9245 PL_regendp = (I32*)NULL;
9246 PL_reglastparen = (U32*)NULL;
9247 PL_regtill = Nullch;
9249 PL_reg_start_tmp = (char**)NULL;
9250 PL_reg_start_tmpl = 0;
9251 PL_regdata = (struct reg_data*)NULL;
9254 PL_reg_eval_set = 0;
9256 PL_regprogram = (regnode*)NULL;
9258 PL_regcc = (CURCUR*)NULL;
9259 PL_reg_call_cc = (struct re_cc_state*)NULL;
9260 PL_reg_re = (regexp*)NULL;
9261 PL_reg_ganch = Nullch;
9263 PL_reg_magic = (MAGIC*)NULL;
9265 PL_reg_oldcurpm = (PMOP*)NULL;
9266 PL_reg_curpm = (PMOP*)NULL;
9267 PL_reg_oldsaved = Nullch;
9268 PL_reg_oldsavedlen = 0;
9270 PL_reg_leftiter = 0;
9271 PL_reg_poscache = Nullch;
9272 PL_reg_poscache_size= 0;
9274 /* RE engine - function pointers */
9275 PL_regcompp = proto_perl->Tregcompp;
9276 PL_regexecp = proto_perl->Tregexecp;
9277 PL_regint_start = proto_perl->Tregint_start;
9278 PL_regint_string = proto_perl->Tregint_string;
9279 PL_regfree = proto_perl->Tregfree;
9281 PL_reginterp_cnt = 0;
9282 PL_reg_starttry = 0;
9284 if (!(flags & CLONEf_KEEP_PTR_TABLE)) {
9285 ptr_table_free(PL_ptr_table);
9286 PL_ptr_table = NULL;
9290 return (PerlInterpreter*)pPerl;
9296 #else /* !USE_ITHREADS */
9302 #endif /* USE_ITHREADS */
9305 do_report_used(pTHXo_ SV *sv)
9307 if (SvTYPE(sv) != SVTYPEMASK) {
9308 PerlIO_printf(Perl_debug_log, "****\n");
9314 do_clean_objs(pTHXo_ SV *sv)
9318 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
9319 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
9320 if (SvWEAKREF(sv)) {
9331 /* XXX Might want to check arrays, etc. */
9334 #ifndef DISABLE_DESTRUCTOR_KLUDGE
9336 do_clean_named_objs(pTHXo_ SV *sv)
9338 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
9339 if ( SvOBJECT(GvSV(sv)) ||
9340 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
9341 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
9342 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
9343 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
9345 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
9353 do_clean_all(pTHXo_ SV *sv)
9355 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
9356 SvFLAGS(sv) |= SVf_BREAK;