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); \
66 if (PL_debug & 32768) \
76 if (PL_debug & 32768) {
81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
83 svend = &sva[SvREFCNT(sva)];
84 if (p >= sv && p < svend)
88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
90 "Attempt to free non-arena SV: 0x%"UVxf,
98 #else /* ! DEBUGGING */
100 #define del_SV(p) plant_SV(p)
102 #endif /* DEBUGGING */
105 Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
110 Zero(ptr, size, char);
112 /* The first SV in an arena isn't an SV. */
113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
120 svend = &sva[SvREFCNT(sva) - 1];
123 SvANY(sv) = (void *)(SV*)(sv + 1);
124 SvFLAGS(sv) = SVTYPEMASK;
128 SvFLAGS(sv) = SVTYPEMASK;
131 /* sv_mutex must be held while calling more_sv() */
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
151 S_visit(pTHX_ SVFUNC_t f)
157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
158 svend = &sva[SvREFCNT(sva)];
159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
167 Perl_sv_report_used(pTHX)
169 visit(do_report_used);
173 Perl_sv_clean_objs(pTHX)
175 PL_in_clean_objs = TRUE;
176 visit(do_clean_objs);
177 #ifndef DISABLE_DESTRUCTOR_KLUDGE
178 /* some barnacles may yet remain, clinging to typeglobs */
179 visit(do_clean_named_objs);
181 PL_in_clean_objs = FALSE;
185 Perl_sv_clean_all(pTHX)
187 PL_in_clean_all = TRUE;
189 PL_in_clean_all = FALSE;
193 Perl_sv_free_arenas(pTHX)
197 XPV *arena, *arenanext;
199 /* Free arenas here, but be careful about fake ones. (We assume
200 contiguity of the fake ones with the corresponding real ones.) */
202 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
203 svanext = (SV*) SvANY(sva);
204 while (svanext && SvFAKE(svanext))
205 svanext = (SV*) SvANY(svanext);
208 Safefree((void *)sva);
211 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
212 arenanext = (XPV*)arena->xpv_pv;
215 PL_xiv_arenaroot = 0;
217 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
221 PL_xnv_arenaroot = 0;
223 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
227 PL_xrv_arenaroot = 0;
229 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
233 PL_xpv_arenaroot = 0;
235 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
239 PL_xpviv_arenaroot = 0;
241 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
245 PL_xpvnv_arenaroot = 0;
247 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
251 PL_xpvcv_arenaroot = 0;
253 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
257 PL_xpvav_arenaroot = 0;
259 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
263 PL_xpvhv_arenaroot = 0;
265 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
269 PL_xpvmg_arenaroot = 0;
271 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
275 PL_xpvlv_arenaroot = 0;
277 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
281 PL_xpvbm_arenaroot = 0;
283 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
290 Safefree(PL_nice_chunk);
291 PL_nice_chunk = Nullch;
292 PL_nice_chunk_size = 0;
298 Perl_report_uninit(pTHX)
301 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
302 " in ", PL_op_desc[PL_op->op_type]);
304 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
316 * See comment in more_xiv() -- RAM.
318 PL_xiv_root = *(IV**)xiv;
320 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
324 S_del_xiv(pTHX_ XPVIV *p)
326 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
328 *(IV**)xiv = PL_xiv_root;
339 New(705, ptr, 1008/sizeof(XPV), XPV);
340 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
341 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
344 xivend = &xiv[1008 / sizeof(IV) - 1];
345 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
347 while (xiv < xivend) {
348 *(IV**)xiv = (IV *)(xiv + 1);
362 PL_xnv_root = *(NV**)xnv;
364 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
368 S_del_xnv(pTHX_ XPVNV *p)
370 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
372 *(NV**)xnv = PL_xnv_root;
383 New(711, ptr, 1008/sizeof(XPV), XPV);
384 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
385 PL_xnv_arenaroot = ptr;
388 xnvend = &xnv[1008 / sizeof(NV) - 1];
389 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
391 while (xnv < xnvend) {
392 *(NV**)xnv = (NV*)(xnv + 1);
406 PL_xrv_root = (XRV*)xrv->xrv_rv;
412 S_del_xrv(pTHX_ XRV *p)
415 p->xrv_rv = (SV*)PL_xrv_root;
424 register XRV* xrvend;
426 New(712, ptr, 1008/sizeof(XPV), XPV);
427 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
428 PL_xrv_arenaroot = ptr;
431 xrvend = &xrv[1008 / sizeof(XRV) - 1];
432 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
434 while (xrv < xrvend) {
435 xrv->xrv_rv = (SV*)(xrv + 1);
449 PL_xpv_root = (XPV*)xpv->xpv_pv;
455 S_del_xpv(pTHX_ XPV *p)
458 p->xpv_pv = (char*)PL_xpv_root;
467 register XPV* xpvend;
468 New(713, xpv, 1008/sizeof(XPV), XPV);
469 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
470 PL_xpv_arenaroot = xpv;
472 xpvend = &xpv[1008 / sizeof(XPV) - 1];
474 while (xpv < xpvend) {
475 xpv->xpv_pv = (char*)(xpv + 1);
488 xpviv = PL_xpviv_root;
489 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
495 S_del_xpviv(pTHX_ XPVIV *p)
498 p->xpv_pv = (char*)PL_xpviv_root;
506 register XPVIV* xpviv;
507 register XPVIV* xpvivend;
508 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
509 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
510 PL_xpviv_arenaroot = xpviv;
512 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
513 PL_xpviv_root = ++xpviv;
514 while (xpviv < xpvivend) {
515 xpviv->xpv_pv = (char*)(xpviv + 1);
528 xpvnv = PL_xpvnv_root;
529 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
535 S_del_xpvnv(pTHX_ XPVNV *p)
538 p->xpv_pv = (char*)PL_xpvnv_root;
546 register XPVNV* xpvnv;
547 register XPVNV* xpvnvend;
548 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
549 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
550 PL_xpvnv_arenaroot = xpvnv;
552 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
553 PL_xpvnv_root = ++xpvnv;
554 while (xpvnv < xpvnvend) {
555 xpvnv->xpv_pv = (char*)(xpvnv + 1);
568 xpvcv = PL_xpvcv_root;
569 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
575 S_del_xpvcv(pTHX_ XPVCV *p)
578 p->xpv_pv = (char*)PL_xpvcv_root;
586 register XPVCV* xpvcv;
587 register XPVCV* xpvcvend;
588 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
589 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
590 PL_xpvcv_arenaroot = xpvcv;
592 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
593 PL_xpvcv_root = ++xpvcv;
594 while (xpvcv < xpvcvend) {
595 xpvcv->xpv_pv = (char*)(xpvcv + 1);
608 xpvav = PL_xpvav_root;
609 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
615 S_del_xpvav(pTHX_ XPVAV *p)
618 p->xav_array = (char*)PL_xpvav_root;
626 register XPVAV* xpvav;
627 register XPVAV* xpvavend;
628 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
629 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
630 PL_xpvav_arenaroot = xpvav;
632 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
633 PL_xpvav_root = ++xpvav;
634 while (xpvav < xpvavend) {
635 xpvav->xav_array = (char*)(xpvav + 1);
638 xpvav->xav_array = 0;
648 xpvhv = PL_xpvhv_root;
649 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
655 S_del_xpvhv(pTHX_ XPVHV *p)
658 p->xhv_array = (char*)PL_xpvhv_root;
666 register XPVHV* xpvhv;
667 register XPVHV* xpvhvend;
668 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
669 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
670 PL_xpvhv_arenaroot = xpvhv;
672 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
673 PL_xpvhv_root = ++xpvhv;
674 while (xpvhv < xpvhvend) {
675 xpvhv->xhv_array = (char*)(xpvhv + 1);
678 xpvhv->xhv_array = 0;
688 xpvmg = PL_xpvmg_root;
689 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
695 S_del_xpvmg(pTHX_ XPVMG *p)
698 p->xpv_pv = (char*)PL_xpvmg_root;
706 register XPVMG* xpvmg;
707 register XPVMG* xpvmgend;
708 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
709 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
710 PL_xpvmg_arenaroot = xpvmg;
712 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
713 PL_xpvmg_root = ++xpvmg;
714 while (xpvmg < xpvmgend) {
715 xpvmg->xpv_pv = (char*)(xpvmg + 1);
728 xpvlv = PL_xpvlv_root;
729 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
735 S_del_xpvlv(pTHX_ XPVLV *p)
738 p->xpv_pv = (char*)PL_xpvlv_root;
746 register XPVLV* xpvlv;
747 register XPVLV* xpvlvend;
748 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
749 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
750 PL_xpvlv_arenaroot = xpvlv;
752 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
753 PL_xpvlv_root = ++xpvlv;
754 while (xpvlv < xpvlvend) {
755 xpvlv->xpv_pv = (char*)(xpvlv + 1);
768 xpvbm = PL_xpvbm_root;
769 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
775 S_del_xpvbm(pTHX_ XPVBM *p)
778 p->xpv_pv = (char*)PL_xpvbm_root;
786 register XPVBM* xpvbm;
787 register XPVBM* xpvbmend;
788 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
789 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
790 PL_xpvbm_arenaroot = xpvbm;
792 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
793 PL_xpvbm_root = ++xpvbm;
794 while (xpvbm < xpvbmend) {
795 xpvbm->xpv_pv = (char*)(xpvbm + 1);
802 # define my_safemalloc(s) (void*)safexmalloc(717,s)
803 # define my_safefree(p) safexfree((char*)p)
805 # define my_safemalloc(s) (void*)safemalloc(s)
806 # define my_safefree(p) safefree((char*)p)
811 #define new_XIV() my_safemalloc(sizeof(XPVIV))
812 #define del_XIV(p) my_safefree(p)
814 #define new_XNV() my_safemalloc(sizeof(XPVNV))
815 #define del_XNV(p) my_safefree(p)
817 #define new_XRV() my_safemalloc(sizeof(XRV))
818 #define del_XRV(p) my_safefree(p)
820 #define new_XPV() my_safemalloc(sizeof(XPV))
821 #define del_XPV(p) my_safefree(p)
823 #define new_XPVIV() my_safemalloc(sizeof(XPVIV))
824 #define del_XPVIV(p) my_safefree(p)
826 #define new_XPVNV() my_safemalloc(sizeof(XPVNV))
827 #define del_XPVNV(p) my_safefree(p)
829 #define new_XPVCV() my_safemalloc(sizeof(XPVCV))
830 #define del_XPVCV(p) my_safefree(p)
832 #define new_XPVAV() my_safemalloc(sizeof(XPVAV))
833 #define del_XPVAV(p) my_safefree(p)
835 #define new_XPVHV() my_safemalloc(sizeof(XPVHV))
836 #define del_XPVHV(p) my_safefree(p)
838 #define new_XPVMG() my_safemalloc(sizeof(XPVMG))
839 #define del_XPVMG(p) my_safefree(p)
841 #define new_XPVLV() my_safemalloc(sizeof(XPVLV))
842 #define del_XPVLV(p) my_safefree(p)
844 #define new_XPVBM() my_safemalloc(sizeof(XPVBM))
845 #define del_XPVBM(p) my_safefree(p)
849 #define new_XIV() (void*)new_xiv()
850 #define del_XIV(p) del_xiv((XPVIV*) p)
852 #define new_XNV() (void*)new_xnv()
853 #define del_XNV(p) del_xnv((XPVNV*) p)
855 #define new_XRV() (void*)new_xrv()
856 #define del_XRV(p) del_xrv((XRV*) p)
858 #define new_XPV() (void*)new_xpv()
859 #define del_XPV(p) del_xpv((XPV *)p)
861 #define new_XPVIV() (void*)new_xpviv()
862 #define del_XPVIV(p) del_xpviv((XPVIV *)p)
864 #define new_XPVNV() (void*)new_xpvnv()
865 #define del_XPVNV(p) del_xpvnv((XPVNV *)p)
867 #define new_XPVCV() (void*)new_xpvcv()
868 #define del_XPVCV(p) del_xpvcv((XPVCV *)p)
870 #define new_XPVAV() (void*)new_xpvav()
871 #define del_XPVAV(p) del_xpvav((XPVAV *)p)
873 #define new_XPVHV() (void*)new_xpvhv()
874 #define del_XPVHV(p) del_xpvhv((XPVHV *)p)
876 #define new_XPVMG() (void*)new_xpvmg()
877 #define del_XPVMG(p) del_xpvmg((XPVMG *)p)
879 #define new_XPVLV() (void*)new_xpvlv()
880 #define del_XPVLV(p) del_xpvlv((XPVLV *)p)
882 #define new_XPVBM() (void*)new_xpvbm()
883 #define del_XPVBM(p) del_xpvbm((XPVBM *)p)
887 #define new_XPVGV() my_safemalloc(sizeof(XPVGV))
888 #define del_XPVGV(p) my_safefree(p)
890 #define new_XPVFM() my_safemalloc(sizeof(XPVFM))
891 #define del_XPVFM(p) my_safefree(p)
893 #define new_XPVIO() my_safemalloc(sizeof(XPVIO))
894 #define del_XPVIO(p) my_safefree(p)
897 =for apidoc sv_upgrade
899 Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
906 Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
916 if (mt != SVt_PV && SvREADONLY(sv) && SvFAKE(sv)) {
920 if (SvTYPE(sv) == mt)
926 switch (SvTYPE(sv)) {
947 else if (mt < SVt_PVIV)
964 pv = (char*)SvRV(sv);
984 else if (mt == SVt_NV)
995 del_XPVIV(SvANY(sv));
1005 del_XPVNV(SvANY(sv));
1013 magic = SvMAGIC(sv);
1014 stash = SvSTASH(sv);
1015 del_XPVMG(SvANY(sv));
1018 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
1023 Perl_croak(aTHX_ "Can't upgrade to undef");
1025 SvANY(sv) = new_XIV();
1029 SvANY(sv) = new_XNV();
1033 SvANY(sv) = new_XRV();
1037 SvANY(sv) = new_XPV();
1043 SvANY(sv) = new_XPVIV();
1053 SvANY(sv) = new_XPVNV();
1061 SvANY(sv) = new_XPVMG();
1067 SvMAGIC(sv) = magic;
1068 SvSTASH(sv) = stash;
1071 SvANY(sv) = new_XPVLV();
1077 SvMAGIC(sv) = magic;
1078 SvSTASH(sv) = stash;
1085 SvANY(sv) = new_XPVAV();
1093 SvMAGIC(sv) = magic;
1094 SvSTASH(sv) = stash;
1100 SvANY(sv) = new_XPVHV();
1108 SvMAGIC(sv) = magic;
1109 SvSTASH(sv) = stash;
1116 SvANY(sv) = new_XPVCV();
1117 Zero(SvANY(sv), 1, XPVCV);
1123 SvMAGIC(sv) = magic;
1124 SvSTASH(sv) = stash;
1127 SvANY(sv) = new_XPVGV();
1133 SvMAGIC(sv) = magic;
1134 SvSTASH(sv) = stash;
1142 SvANY(sv) = new_XPVBM();
1148 SvMAGIC(sv) = magic;
1149 SvSTASH(sv) = stash;
1155 SvANY(sv) = new_XPVFM();
1156 Zero(SvANY(sv), 1, XPVFM);
1162 SvMAGIC(sv) = magic;
1163 SvSTASH(sv) = stash;
1166 SvANY(sv) = new_XPVIO();
1167 Zero(SvANY(sv), 1, XPVIO);
1173 SvMAGIC(sv) = magic;
1174 SvSTASH(sv) = stash;
1175 IoPAGE_LEN(sv) = 60;
1178 SvFLAGS(sv) &= ~SVTYPEMASK;
1184 Perl_sv_backoff(pTHX_ register SV *sv)
1188 char *s = SvPVX(sv);
1189 SvLEN(sv) += SvIVX(sv);
1190 SvPVX(sv) -= SvIVX(sv);
1192 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1194 SvFLAGS(sv) &= ~SVf_OOK;
1201 Expands the character buffer in the SV. This will use C<sv_unref> and will
1202 upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1209 Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
1213 #ifdef HAS_64K_LIMIT
1214 if (newlen >= 0x10000) {
1215 PerlIO_printf(Perl_debug_log,
1216 "Allocation too large: %"UVxf"\n", (UV)newlen);
1219 #endif /* HAS_64K_LIMIT */
1222 if (SvTYPE(sv) < SVt_PV) {
1223 sv_upgrade(sv, SVt_PV);
1226 else if (SvOOK(sv)) { /* pv is offset? */
1229 if (newlen > SvLEN(sv))
1230 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1231 #ifdef HAS_64K_LIMIT
1232 if (newlen >= 0x10000)
1238 if (newlen > SvLEN(sv)) { /* need more room? */
1239 if (SvLEN(sv) && s) {
1240 #if defined(MYMALLOC) && !defined(LEAKTEST)
1241 STRLEN l = malloced_size((void*)SvPVX(sv));
1247 Renew(s,newlen,char);
1250 New(703,s,newlen,char);
1252 SvLEN_set(sv, newlen);
1258 =for apidoc sv_setiv
1260 Copies an integer into the given SV. Does not handle 'set' magic. See
1267 Perl_sv_setiv(pTHX_ register SV *sv, IV i)
1269 SV_CHECK_THINKFIRST(sv);
1270 switch (SvTYPE(sv)) {
1272 sv_upgrade(sv, SVt_IV);
1275 sv_upgrade(sv, SVt_PVNV);
1279 sv_upgrade(sv, SVt_PVIV);
1288 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1289 PL_op_desc[PL_op->op_type]);
1291 (void)SvIOK_only(sv); /* validate number */
1297 =for apidoc sv_setiv_mg
1299 Like C<sv_setiv>, but also handles 'set' magic.
1305 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1312 =for apidoc sv_setuv
1314 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1321 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
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 return sv_2pv(sv,lp);
2891 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2894 return sv_2pvutf8(sv, &n_a);
2898 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2900 sv_utf8_upgrade(sv);
2901 return SvPV(sv,*lp);
2904 /* This function is only called on magical items */
2906 Perl_sv_2bool(pTHX_ register SV *sv)
2915 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2916 (SvRV(tmpsv) != SvRV(sv)))
2917 return SvTRUE(tmpsv);
2918 return SvRV(sv) != 0;
2921 register XPV* Xpvtmp;
2922 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2923 (*Xpvtmp->xpv_pv > '0' ||
2924 Xpvtmp->xpv_cur > 1 ||
2925 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2932 return SvIVX(sv) != 0;
2935 return SvNVX(sv) != 0.0;
2943 =for apidoc sv_utf8_upgrade
2945 Convert the PV of an SV to its UTF8-encoded form.
2951 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2956 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2959 /* This function could be much more efficient if we had a FLAG in SVs
2960 * to signal if there are any hibit chars in the PV.
2961 * Given that there isn't make loop fast as possible
2967 if ((hibit = UTF8_IS_CONTINUED(*t++)))
2974 if (SvREADONLY(sv) && SvFAKE(sv)) {
2975 sv_force_normal(sv);
2978 len = SvCUR(sv) + 1; /* Plus the \0 */
2979 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2980 SvCUR(sv) = len - 1;
2982 Safefree(s); /* No longer using what was there before. */
2983 SvLEN(sv) = len; /* No longer know the real size. */
2989 =for apidoc sv_utf8_downgrade
2991 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2992 This may not be possible if the PV contains non-byte encoding characters;
2993 if this is the case, either returns false or, if C<fail_ok> is not
3000 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
3002 if (SvPOK(sv) && SvUTF8(sv)) {
3007 if (SvREADONLY(sv) && SvFAKE(sv))
3008 sv_force_normal(sv);
3010 if (!utf8_to_bytes((U8*)s, &len)) {
3015 Perl_croak(aTHX_ "Wide character in %s",
3016 PL_op_desc[PL_op->op_type]);
3018 Perl_croak(aTHX_ "Wide character");
3030 =for apidoc sv_utf8_encode
3032 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
3033 flag so that it looks like bytes again. Nothing calls this.
3039 Perl_sv_utf8_encode(pTHX_ register SV *sv)
3041 sv_utf8_upgrade(sv);
3046 Perl_sv_utf8_decode(pTHX_ register SV *sv)
3052 if (!sv_utf8_downgrade(sv, TRUE))
3055 /* it is actually just a matter of turning the utf8 flag on, but
3056 * we want to make sure everything inside is valid utf8 first.
3059 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
3063 if (UTF8_IS_CONTINUED(*c++)) {
3073 /* Note: sv_setsv() should not be called with a source string that needs
3074 * to be reused, since it may destroy the source string if it is marked
3079 =for apidoc sv_setsv
3081 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
3082 The source SV may be destroyed if it is mortal. Does not handle 'set'
3083 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
3090 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
3092 register U32 sflags;
3098 SV_CHECK_THINKFIRST(dstr);
3100 sstr = &PL_sv_undef;
3101 stype = SvTYPE(sstr);
3102 dtype = SvTYPE(dstr);
3106 /* There's a lot of redundancy below but we're going for speed here */
3111 if (dtype != SVt_PVGV) {
3112 (void)SvOK_off(dstr);
3120 sv_upgrade(dstr, SVt_IV);
3123 sv_upgrade(dstr, SVt_PVNV);
3127 sv_upgrade(dstr, SVt_PVIV);
3130 (void)SvIOK_only(dstr);
3131 SvIVX(dstr) = SvIVX(sstr);
3134 if (SvTAINTED(sstr))
3145 sv_upgrade(dstr, SVt_NV);
3150 sv_upgrade(dstr, SVt_PVNV);
3153 SvNVX(dstr) = SvNVX(sstr);
3154 (void)SvNOK_only(dstr);
3155 if (SvTAINTED(sstr))
3163 sv_upgrade(dstr, SVt_RV);
3164 else if (dtype == SVt_PVGV &&
3165 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
3168 if (GvIMPORTED(dstr) != GVf_IMPORTED
3169 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3171 GvIMPORTED_on(dstr);
3182 sv_upgrade(dstr, SVt_PV);
3185 if (dtype < SVt_PVIV)
3186 sv_upgrade(dstr, SVt_PVIV);
3189 if (dtype < SVt_PVNV)
3190 sv_upgrade(dstr, SVt_PVNV);
3197 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
3198 PL_op_name[PL_op->op_type]);
3200 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
3204 if (dtype <= SVt_PVGV) {
3206 if (dtype != SVt_PVGV) {
3207 char *name = GvNAME(sstr);
3208 STRLEN len = GvNAMELEN(sstr);
3209 sv_upgrade(dstr, SVt_PVGV);
3210 sv_magic(dstr, dstr, '*', Nullch, 0);
3211 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
3212 GvNAME(dstr) = savepvn(name, len);
3213 GvNAMELEN(dstr) = len;
3214 SvFAKE_on(dstr); /* can coerce to non-glob */
3216 /* ahem, death to those who redefine active sort subs */
3217 else if (PL_curstackinfo->si_type == PERLSI_SORT
3218 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
3219 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
3222 #ifdef GV_SHARED_CHECK
3223 if (GvSHARED((GV*)dstr)) {
3224 Perl_croak(aTHX_ PL_no_modify);
3228 (void)SvOK_off(dstr);
3229 GvINTRO_off(dstr); /* one-shot flag */
3231 GvGP(dstr) = gp_ref(GvGP(sstr));
3232 if (SvTAINTED(sstr))
3234 if (GvIMPORTED(dstr) != GVf_IMPORTED
3235 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3237 GvIMPORTED_on(dstr);
3245 if (SvGMAGICAL(sstr)) {
3247 if (SvTYPE(sstr) != stype) {
3248 stype = SvTYPE(sstr);
3249 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
3253 if (stype == SVt_PVLV)
3254 (void)SvUPGRADE(dstr, SVt_PVNV);
3256 (void)SvUPGRADE(dstr, stype);
3259 sflags = SvFLAGS(sstr);
3261 if (sflags & SVf_ROK) {
3262 if (dtype >= SVt_PV) {
3263 if (dtype == SVt_PVGV) {
3264 SV *sref = SvREFCNT_inc(SvRV(sstr));
3266 int intro = GvINTRO(dstr);
3268 #ifdef GV_SHARED_CHECK
3269 if (GvSHARED((GV*)dstr)) {
3270 Perl_croak(aTHX_ PL_no_modify);
3277 GvINTRO_off(dstr); /* one-shot flag */
3278 Newz(602,gp, 1, GP);
3279 GvGP(dstr) = gp_ref(gp);
3280 GvSV(dstr) = NEWSV(72,0);
3281 GvLINE(dstr) = CopLINE(PL_curcop);
3282 GvEGV(dstr) = (GV*)dstr;
3285 switch (SvTYPE(sref)) {
3288 SAVESPTR(GvAV(dstr));
3290 dref = (SV*)GvAV(dstr);
3291 GvAV(dstr) = (AV*)sref;
3292 if (!GvIMPORTED_AV(dstr)
3293 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3295 GvIMPORTED_AV_on(dstr);
3300 SAVESPTR(GvHV(dstr));
3302 dref = (SV*)GvHV(dstr);
3303 GvHV(dstr) = (HV*)sref;
3304 if (!GvIMPORTED_HV(dstr)
3305 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3307 GvIMPORTED_HV_on(dstr);
3312 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
3313 SvREFCNT_dec(GvCV(dstr));
3314 GvCV(dstr) = Nullcv;
3315 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3316 PL_sub_generation++;
3318 SAVESPTR(GvCV(dstr));
3321 dref = (SV*)GvCV(dstr);
3322 if (GvCV(dstr) != (CV*)sref) {
3323 CV* cv = GvCV(dstr);
3325 if (!GvCVGEN((GV*)dstr) &&
3326 (CvROOT(cv) || CvXSUB(cv)))
3328 /* ahem, death to those who redefine
3329 * active sort subs */
3330 if (PL_curstackinfo->si_type == PERLSI_SORT &&
3331 PL_sortcop == CvSTART(cv))
3333 "Can't redefine active sort subroutine %s",
3334 GvENAME((GV*)dstr));
3335 /* Redefining a sub - warning is mandatory if
3336 it was a const and its value changed. */
3337 if (ckWARN(WARN_REDEFINE)
3339 && (!CvCONST((CV*)sref)
3340 || sv_cmp(cv_const_sv(cv),
3341 cv_const_sv((CV*)sref)))))
3343 Perl_warner(aTHX_ WARN_REDEFINE,
3345 ? "Constant subroutine %s redefined"
3346 : "Subroutine %s redefined",
3347 GvENAME((GV*)dstr));
3350 cv_ckproto(cv, (GV*)dstr,
3351 SvPOK(sref) ? SvPVX(sref) : Nullch);
3353 GvCV(dstr) = (CV*)sref;
3354 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3355 GvASSUMECV_on(dstr);
3356 PL_sub_generation++;
3358 if (!GvIMPORTED_CV(dstr)
3359 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3361 GvIMPORTED_CV_on(dstr);
3366 SAVESPTR(GvIOp(dstr));
3368 dref = (SV*)GvIOp(dstr);
3369 GvIOp(dstr) = (IO*)sref;
3373 SAVESPTR(GvFORM(dstr));
3375 dref = (SV*)GvFORM(dstr);
3376 GvFORM(dstr) = (CV*)sref;
3380 SAVESPTR(GvSV(dstr));
3382 dref = (SV*)GvSV(dstr);
3384 if (!GvIMPORTED_SV(dstr)
3385 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3387 GvIMPORTED_SV_on(dstr);
3395 if (SvTAINTED(sstr))
3400 (void)SvOOK_off(dstr); /* backoff */
3402 Safefree(SvPVX(dstr));
3403 SvLEN(dstr)=SvCUR(dstr)=0;
3406 (void)SvOK_off(dstr);
3407 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
3409 if (sflags & SVp_NOK) {
3411 /* Only set the public OK flag if the source has public OK. */
3412 if (sflags & SVf_NOK)
3413 SvFLAGS(dstr) |= SVf_NOK;
3414 SvNVX(dstr) = SvNVX(sstr);
3416 if (sflags & SVp_IOK) {
3417 (void)SvIOKp_on(dstr);
3418 if (sflags & SVf_IOK)
3419 SvFLAGS(dstr) |= SVf_IOK;
3420 if (sflags & SVf_IVisUV)
3422 SvIVX(dstr) = SvIVX(sstr);
3424 if (SvAMAGIC(sstr)) {
3428 else if (sflags & SVp_POK) {
3431 * Check to see if we can just swipe the string. If so, it's a
3432 * possible small lose on short strings, but a big win on long ones.
3433 * It might even be a win on short strings if SvPVX(dstr)
3434 * has to be allocated and SvPVX(sstr) has to be freed.
3437 if (SvTEMP(sstr) && /* slated for free anyway? */
3438 SvREFCNT(sstr) == 1 && /* and no other references to it? */
3439 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
3440 SvLEN(sstr) && /* and really is a string */
3441 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
3443 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
3445 SvFLAGS(dstr) &= ~SVf_OOK;
3446 Safefree(SvPVX(dstr) - SvIVX(dstr));
3448 else if (SvLEN(dstr))
3449 Safefree(SvPVX(dstr));
3451 (void)SvPOK_only(dstr);
3452 SvPV_set(dstr, SvPVX(sstr));
3453 SvLEN_set(dstr, SvLEN(sstr));
3454 SvCUR_set(dstr, SvCUR(sstr));
3457 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
3458 SvPV_set(sstr, Nullch);
3463 else { /* have to copy actual string */
3464 STRLEN len = SvCUR(sstr);
3466 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
3467 Move(SvPVX(sstr),SvPVX(dstr),len,char);
3468 SvCUR_set(dstr, len);
3469 *SvEND(dstr) = '\0';
3470 (void)SvPOK_only(dstr);
3472 if (sflags & SVf_UTF8)
3475 if (sflags & SVp_NOK) {
3477 if (sflags & SVf_NOK)
3478 SvFLAGS(dstr) |= SVf_NOK;
3479 SvNVX(dstr) = SvNVX(sstr);
3481 if (sflags & SVp_IOK) {
3482 (void)SvIOKp_on(dstr);
3483 if (sflags & SVf_IOK)
3484 SvFLAGS(dstr) |= SVf_IOK;
3485 if (sflags & SVf_IVisUV)
3487 SvIVX(dstr) = SvIVX(sstr);
3490 else if (sflags & SVp_IOK) {
3491 if (sflags & SVf_IOK)
3492 (void)SvIOK_only(dstr);
3494 (void)SvOK_off(dstr);
3495 (void)SvIOKp_on(dstr);
3497 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
3498 if (sflags & SVf_IVisUV)
3500 SvIVX(dstr) = SvIVX(sstr);
3501 if (sflags & SVp_NOK) {
3502 if (sflags & SVf_NOK)
3503 (void)SvNOK_on(dstr);
3505 (void)SvNOKp_on(dstr);
3506 SvNVX(dstr) = SvNVX(sstr);
3509 else if (sflags & SVp_NOK) {
3510 if (sflags & SVf_NOK)
3511 (void)SvNOK_only(dstr);
3513 (void)SvOK_off(dstr);
3516 SvNVX(dstr) = SvNVX(sstr);
3519 if (dtype == SVt_PVGV) {
3520 if (ckWARN(WARN_MISC))
3521 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
3524 (void)SvOK_off(dstr);
3526 if (SvTAINTED(sstr))
3531 =for apidoc sv_setsv_mg
3533 Like C<sv_setsv>, but also handles 'set' magic.
3539 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
3541 sv_setsv(dstr,sstr);
3546 =for apidoc sv_setpvn
3548 Copies a string into an SV. The C<len> parameter indicates the number of
3549 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
3555 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3557 register char *dptr;
3559 SV_CHECK_THINKFIRST(sv);
3565 /* len is STRLEN which is unsigned, need to copy to signed */
3569 (void)SvUPGRADE(sv, SVt_PV);
3571 SvGROW(sv, len + 1);
3573 Move(ptr,dptr,len,char);
3576 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3581 =for apidoc sv_setpvn_mg
3583 Like C<sv_setpvn>, but also handles 'set' magic.
3589 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3591 sv_setpvn(sv,ptr,len);
3596 =for apidoc sv_setpv
3598 Copies a string into an SV. The string must be null-terminated. Does not
3599 handle 'set' magic. See C<sv_setpv_mg>.
3605 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3607 register STRLEN len;
3609 SV_CHECK_THINKFIRST(sv);
3615 (void)SvUPGRADE(sv, SVt_PV);
3617 SvGROW(sv, len + 1);
3618 Move(ptr,SvPVX(sv),len+1,char);
3620 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3625 =for apidoc sv_setpv_mg
3627 Like C<sv_setpv>, but also handles 'set' magic.
3633 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3640 =for apidoc sv_usepvn
3642 Tells an SV to use C<ptr> to find its string value. Normally the string is
3643 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3644 The C<ptr> should point to memory that was allocated by C<malloc>. The
3645 string length, C<len>, must be supplied. This function will realloc the
3646 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3647 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3648 See C<sv_usepvn_mg>.
3654 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3656 SV_CHECK_THINKFIRST(sv);
3657 (void)SvUPGRADE(sv, SVt_PV);
3662 (void)SvOOK_off(sv);
3663 if (SvPVX(sv) && SvLEN(sv))
3664 Safefree(SvPVX(sv));
3665 Renew(ptr, len+1, char);
3668 SvLEN_set(sv, len+1);
3670 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3675 =for apidoc sv_usepvn_mg
3677 Like C<sv_usepvn>, but also handles 'set' magic.
3683 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3685 sv_usepvn(sv,ptr,len);
3690 Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags)
3692 if (SvREADONLY(sv)) {
3694 char *pvx = SvPVX(sv);
3695 STRLEN len = SvCUR(sv);
3696 U32 hash = SvUVX(sv);
3697 SvGROW(sv, len + 1);
3698 Move(pvx,SvPVX(sv),len,char);
3702 unsharepvn(pvx,SvUTF8(sv)?-len:len,hash);
3704 else if (PL_curcop != &PL_compiling)
3705 Perl_croak(aTHX_ PL_no_modify);
3708 sv_unref_flags(sv, flags);
3709 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3714 Perl_sv_force_normal(pTHX_ register SV *sv)
3716 sv_force_normal_flags(sv, 0);
3722 Efficient removal of characters from the beginning of the string buffer.
3723 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3724 the string buffer. The C<ptr> becomes the first character of the adjusted
3731 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3735 register STRLEN delta;
3737 if (!ptr || !SvPOKp(sv))
3739 SV_CHECK_THINKFIRST(sv);
3740 if (SvTYPE(sv) < SVt_PVIV)
3741 sv_upgrade(sv,SVt_PVIV);
3744 if (!SvLEN(sv)) { /* make copy of shared string */
3745 char *pvx = SvPVX(sv);
3746 STRLEN len = SvCUR(sv);
3747 SvGROW(sv, len + 1);
3748 Move(pvx,SvPVX(sv),len,char);
3752 SvFLAGS(sv) |= SVf_OOK;
3754 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3755 delta = ptr - SvPVX(sv);
3763 =for apidoc sv_catpvn
3765 Concatenates the string onto the end of the string which is in the SV. The
3766 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3767 'set' magic. See C<sv_catpvn_mg>.
3773 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3778 junk = SvPV_force(sv, tlen);
3779 SvGROW(sv, tlen + len + 1);
3782 Move(ptr,SvPVX(sv)+tlen,len,char);
3785 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3790 =for apidoc sv_catpvn_mg
3792 Like C<sv_catpvn>, but also handles 'set' magic.
3798 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3800 sv_catpvn(sv,ptr,len);
3805 =for apidoc sv_catsv
3807 Concatenates the string from SV C<ssv> onto the end of the string in
3808 SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but
3809 not 'set' magic. See C<sv_catsv_mg>.
3814 Perl_sv_catsv(pTHX_ SV *dsv, register SV *ssv)
3820 if ((spv = SvPV(ssv, slen))) {
3821 bool dutf8 = DO_UTF8(dsv);
3822 bool sutf8 = DO_UTF8(ssv);
3825 sv_catpvn(dsv,spv,slen);
3828 /* Not modifying source SV, so taking a temporary copy. */
3829 SV* csv = sv_2mortal(newSVsv(ssv));
3833 sv_utf8_upgrade(csv);
3834 cpv = SvPV(csv,clen);
3835 sv_catpvn(dsv,cpv,clen);
3838 sv_utf8_upgrade(dsv);
3839 sv_catpvn(dsv,spv,slen);
3840 SvUTF8_on(dsv); /* If dsv has no wide characters. */
3847 =for apidoc sv_catsv_mg
3849 Like C<sv_catsv>, but also handles 'set' magic.
3855 Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv)
3862 =for apidoc sv_catpv
3864 Concatenates the string onto the end of the string which is in the SV.
3865 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3871 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3873 register STRLEN len;
3879 junk = SvPV_force(sv, tlen);
3881 SvGROW(sv, tlen + len + 1);
3884 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3886 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3891 =for apidoc sv_catpv_mg
3893 Like C<sv_catpv>, but also handles 'set' magic.
3899 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3906 Perl_newSV(pTHX_ STRLEN len)
3912 sv_upgrade(sv, SVt_PV);
3913 SvGROW(sv, len + 1);
3918 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3921 =for apidoc sv_magic
3923 Adds magic to an SV.
3929 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3933 if (SvREADONLY(sv)) {
3934 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3935 Perl_croak(aTHX_ PL_no_modify);
3937 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3938 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3945 (void)SvUPGRADE(sv, SVt_PVMG);
3947 Newz(702,mg, 1, MAGIC);
3948 mg->mg_moremagic = SvMAGIC(sv);
3951 if (!obj || obj == sv || how == '#' || how == 'r')
3954 mg->mg_obj = SvREFCNT_inc(obj);
3955 mg->mg_flags |= MGf_REFCOUNTED;
3958 mg->mg_len = namlen;
3961 mg->mg_ptr = savepvn(name, namlen);
3962 else if (namlen == HEf_SVKEY)
3963 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3968 mg->mg_virtual = &PL_vtbl_sv;
3971 mg->mg_virtual = &PL_vtbl_amagic;
3974 mg->mg_virtual = &PL_vtbl_amagicelem;
3977 mg->mg_virtual = &PL_vtbl_ovrld;
3980 mg->mg_virtual = &PL_vtbl_bm;
3983 mg->mg_virtual = &PL_vtbl_regdata;
3986 mg->mg_virtual = &PL_vtbl_regdatum;
3989 mg->mg_virtual = &PL_vtbl_env;
3992 mg->mg_virtual = &PL_vtbl_fm;
3995 mg->mg_virtual = &PL_vtbl_envelem;
3998 mg->mg_virtual = &PL_vtbl_mglob;
4001 mg->mg_virtual = &PL_vtbl_isa;
4004 mg->mg_virtual = &PL_vtbl_isaelem;
4007 mg->mg_virtual = &PL_vtbl_nkeys;
4014 mg->mg_virtual = &PL_vtbl_dbline;
4018 mg->mg_virtual = &PL_vtbl_mutex;
4020 #endif /* USE_THREADS */
4021 #ifdef USE_LOCALE_COLLATE
4023 mg->mg_virtual = &PL_vtbl_collxfrm;
4025 #endif /* USE_LOCALE_COLLATE */
4027 mg->mg_virtual = &PL_vtbl_pack;
4031 mg->mg_virtual = &PL_vtbl_packelem;
4034 mg->mg_virtual = &PL_vtbl_regexp;
4037 mg->mg_virtual = &PL_vtbl_sig;
4040 mg->mg_virtual = &PL_vtbl_sigelem;
4043 mg->mg_virtual = &PL_vtbl_taint;
4047 mg->mg_virtual = &PL_vtbl_uvar;
4050 mg->mg_virtual = &PL_vtbl_vec;
4053 mg->mg_virtual = &PL_vtbl_substr;
4056 mg->mg_virtual = &PL_vtbl_defelem;
4059 mg->mg_virtual = &PL_vtbl_glob;
4062 mg->mg_virtual = &PL_vtbl_arylen;
4065 mg->mg_virtual = &PL_vtbl_pos;
4068 mg->mg_virtual = &PL_vtbl_backref;
4070 case '~': /* Reserved for use by extensions not perl internals. */
4071 /* Useful for attaching extension internal data to perl vars. */
4072 /* Note that multiple extensions may clash if magical scalars */
4073 /* etc holding private data from one are passed to another. */
4077 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
4081 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
4085 =for apidoc sv_unmagic
4087 Removes magic from an SV.
4093 Perl_sv_unmagic(pTHX_ SV *sv, int type)
4097 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
4100 for (mg = *mgp; mg; mg = *mgp) {
4101 if (mg->mg_type == type) {
4102 MGVTBL* vtbl = mg->mg_virtual;
4103 *mgp = mg->mg_moremagic;
4104 if (vtbl && vtbl->svt_free)
4105 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
4106 if (mg->mg_ptr && mg->mg_type != 'g') {
4107 if (mg->mg_len >= 0)
4108 Safefree(mg->mg_ptr);
4109 else if (mg->mg_len == HEf_SVKEY)
4110 SvREFCNT_dec((SV*)mg->mg_ptr);
4112 if (mg->mg_flags & MGf_REFCOUNTED)
4113 SvREFCNT_dec(mg->mg_obj);
4117 mgp = &mg->mg_moremagic;
4121 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
4128 =for apidoc sv_rvweaken
4136 Perl_sv_rvweaken(pTHX_ SV *sv)
4139 if (!SvOK(sv)) /* let undefs pass */
4142 Perl_croak(aTHX_ "Can't weaken a nonreference");
4143 else if (SvWEAKREF(sv)) {
4144 if (ckWARN(WARN_MISC))
4145 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
4149 sv_add_backref(tsv, sv);
4156 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
4160 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
4161 av = (AV*)mg->mg_obj;
4164 sv_magic(tsv, (SV*)av, '<', NULL, 0);
4165 SvREFCNT_dec(av); /* for sv_magic */
4171 S_sv_del_backref(pTHX_ SV *sv)
4178 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
4179 Perl_croak(aTHX_ "panic: del_backref");
4180 av = (AV *)mg->mg_obj;
4185 svp[i] = &PL_sv_undef; /* XXX */
4192 =for apidoc sv_insert
4194 Inserts a string at the specified offset/length within the SV. Similar to
4195 the Perl substr() function.
4201 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
4205 register char *midend;
4206 register char *bigend;
4212 Perl_croak(aTHX_ "Can't modify non-existent substring");
4213 SvPV_force(bigstr, curlen);
4214 (void)SvPOK_only_UTF8(bigstr);
4215 if (offset + len > curlen) {
4216 SvGROW(bigstr, offset+len+1);
4217 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
4218 SvCUR_set(bigstr, offset+len);
4222 i = littlelen - len;
4223 if (i > 0) { /* string might grow */
4224 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
4225 mid = big + offset + len;
4226 midend = bigend = big + SvCUR(bigstr);
4229 while (midend > mid) /* shove everything down */
4230 *--bigend = *--midend;
4231 Move(little,big+offset,littlelen,char);
4237 Move(little,SvPVX(bigstr)+offset,len,char);
4242 big = SvPVX(bigstr);
4245 bigend = big + SvCUR(bigstr);
4247 if (midend > bigend)
4248 Perl_croak(aTHX_ "panic: sv_insert");
4250 if (mid - big > bigend - midend) { /* faster to shorten from end */
4252 Move(little, mid, littlelen,char);
4255 i = bigend - midend;
4257 Move(midend, mid, i,char);
4261 SvCUR_set(bigstr, mid - big);
4264 else if ((i = mid - big)) { /* faster from front */
4265 midend -= littlelen;
4267 sv_chop(bigstr,midend-i);
4272 Move(little, mid, littlelen,char);
4274 else if (littlelen) {
4275 midend -= littlelen;
4276 sv_chop(bigstr,midend);
4277 Move(little,midend,littlelen,char);
4280 sv_chop(bigstr,midend);
4286 =for apidoc sv_replace
4288 Make the first argument a copy of the second, then delete the original.
4294 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
4296 U32 refcnt = SvREFCNT(sv);
4297 SV_CHECK_THINKFIRST(sv);
4298 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
4299 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
4300 if (SvMAGICAL(sv)) {
4304 sv_upgrade(nsv, SVt_PVMG);
4305 SvMAGIC(nsv) = SvMAGIC(sv);
4306 SvFLAGS(nsv) |= SvMAGICAL(sv);
4312 assert(!SvREFCNT(sv));
4313 StructCopy(nsv,sv,SV);
4314 SvREFCNT(sv) = refcnt;
4315 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
4320 =for apidoc sv_clear
4322 Clear an SV, making it empty. Does not free the memory used by the SV
4329 Perl_sv_clear(pTHX_ register SV *sv)
4333 assert(SvREFCNT(sv) == 0);
4336 if (PL_defstash) { /* Still have a symbol table? */
4341 Zero(&tmpref, 1, SV);
4342 sv_upgrade(&tmpref, SVt_RV);
4344 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
4345 SvREFCNT(&tmpref) = 1;
4348 stash = SvSTASH(sv);
4349 destructor = StashHANDLER(stash,DESTROY);
4352 PUSHSTACKi(PERLSI_DESTROY);
4353 SvRV(&tmpref) = SvREFCNT_inc(sv);
4358 call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
4364 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
4366 del_XRV(SvANY(&tmpref));
4369 if (PL_in_clean_objs)
4370 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
4372 /* DESTROY gave object new lease on life */
4378 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
4379 SvOBJECT_off(sv); /* Curse the object. */
4380 if (SvTYPE(sv) != SVt_PVIO)
4381 --PL_sv_objcount; /* XXX Might want something more general */
4384 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
4387 switch (SvTYPE(sv)) {
4390 IoIFP(sv) != PerlIO_stdin() &&
4391 IoIFP(sv) != PerlIO_stdout() &&
4392 IoIFP(sv) != PerlIO_stderr())
4394 io_close((IO*)sv, FALSE);
4396 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
4397 PerlDir_close(IoDIRP(sv));
4398 IoDIRP(sv) = (DIR*)NULL;
4399 Safefree(IoTOP_NAME(sv));
4400 Safefree(IoFMT_NAME(sv));
4401 Safefree(IoBOTTOM_NAME(sv));
4416 SvREFCNT_dec(LvTARG(sv));
4420 Safefree(GvNAME(sv));
4421 /* cannot decrease stash refcount yet, as we might recursively delete
4422 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
4423 of stash until current sv is completely gone.
4424 -- JohnPC, 27 Mar 1998 */
4425 stash = GvSTASH(sv);
4431 (void)SvOOK_off(sv);
4439 SvREFCNT_dec(SvRV(sv));
4441 else if (SvPVX(sv) && SvLEN(sv))
4442 Safefree(SvPVX(sv));
4443 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
4444 unsharepvn(SvPVX(sv),SvUTF8(sv)?-SvCUR(sv):SvCUR(sv),SvUVX(sv));
4456 switch (SvTYPE(sv)) {
4472 del_XPVIV(SvANY(sv));
4475 del_XPVNV(SvANY(sv));
4478 del_XPVMG(SvANY(sv));
4481 del_XPVLV(SvANY(sv));
4484 del_XPVAV(SvANY(sv));
4487 del_XPVHV(SvANY(sv));
4490 del_XPVCV(SvANY(sv));
4493 del_XPVGV(SvANY(sv));
4494 /* code duplication for increased performance. */
4495 SvFLAGS(sv) &= SVf_BREAK;
4496 SvFLAGS(sv) |= SVTYPEMASK;
4497 /* decrease refcount of the stash that owns this GV, if any */
4499 SvREFCNT_dec(stash);
4500 return; /* not break, SvFLAGS reset already happened */
4502 del_XPVBM(SvANY(sv));
4505 del_XPVFM(SvANY(sv));
4508 del_XPVIO(SvANY(sv));
4511 SvFLAGS(sv) &= SVf_BREAK;
4512 SvFLAGS(sv) |= SVTYPEMASK;
4516 Perl_sv_newref(pTHX_ SV *sv)
4519 ATOMIC_INC(SvREFCNT(sv));
4526 Free the memory used by an SV.
4532 Perl_sv_free(pTHX_ SV *sv)
4534 int refcount_is_zero;
4538 if (SvREFCNT(sv) == 0) {
4539 if (SvFLAGS(sv) & SVf_BREAK)
4541 if (PL_in_clean_all) /* All is fair */
4543 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
4544 /* make sure SvREFCNT(sv)==0 happens very seldom */
4545 SvREFCNT(sv) = (~(U32)0)/2;
4548 if (ckWARN_d(WARN_INTERNAL))
4549 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
4552 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
4553 if (!refcount_is_zero)
4557 if (ckWARN_d(WARN_DEBUGGING))
4558 Perl_warner(aTHX_ WARN_DEBUGGING,
4559 "Attempt to free temp prematurely: SV 0x%"UVxf,
4564 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
4565 /* make sure SvREFCNT(sv)==0 happens very seldom */
4566 SvREFCNT(sv) = (~(U32)0)/2;
4577 Returns the length of the string in the SV. See also C<SvCUR>.
4583 Perl_sv_len(pTHX_ register SV *sv)
4592 len = mg_length(sv);
4594 junk = SvPV(sv, len);
4599 =for apidoc sv_len_utf8
4601 Returns the number of characters in the string in an SV, counting wide
4602 UTF8 bytes as a single character.
4608 Perl_sv_len_utf8(pTHX_ register SV *sv)
4614 return mg_length(sv);
4618 U8 *s = (U8*)SvPV(sv, len);
4620 return Perl_utf8_length(aTHX_ s, s + len);
4625 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4630 I32 uoffset = *offsetp;
4636 start = s = (U8*)SvPV(sv, len);
4638 while (s < send && uoffset--)
4642 *offsetp = s - start;
4646 while (s < send && ulen--)
4656 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4665 s = (U8*)SvPV(sv, len);
4667 Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset");
4668 send = s + *offsetp;
4673 if (utf8_to_uv(s, UTF8SKIP(s), &n, 0)) {
4687 Returns a boolean indicating whether the strings in the two SVs are
4694 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4701 bool pv1tmp = FALSE;
4702 bool pv2tmp = FALSE;
4709 pv1 = SvPV(sv1, cur1);
4716 pv2 = SvPV(sv2, cur2);
4718 /* do not utf8ize the comparands as a side-effect */
4719 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4720 bool is_utf8 = TRUE;
4722 if (PL_hints & HINT_UTF8_DISTINCT)
4726 char *pv = (char*)bytes_from_utf8((U8*)pv1, &cur1, &is_utf8);
4729 pv1tmp = (pv != pv1);
4733 char *pv = (char *)bytes_from_utf8((U8*)pv2, &cur2, &is_utf8);
4736 pv2tmp = (pv != pv2);
4742 eq = memEQ(pv1, pv2, cur1);
4755 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4756 string in C<sv1> is less than, equal to, or greater than the string in
4763 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4768 bool pv1tmp = FALSE;
4769 bool pv2tmp = FALSE;
4776 pv1 = SvPV(sv1, cur1);
4783 pv2 = SvPV(sv2, cur2);
4785 /* do not utf8ize the comparands as a side-effect */
4786 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4787 if (PL_hints & HINT_UTF8_DISTINCT)
4788 return SvUTF8(sv1) ? 1 : -1;
4791 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4795 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4801 cmp = cur2 ? -1 : 0;
4805 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4808 cmp = retval < 0 ? -1 : 1;
4809 } else if (cur1 == cur2) {
4812 cmp = cur1 < cur2 ? -1 : 1;
4825 =for apidoc sv_cmp_locale
4827 Compares the strings in two SVs in a locale-aware manner. See
4834 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4836 #ifdef USE_LOCALE_COLLATE
4842 if (PL_collation_standard)
4846 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4848 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4850 if (!pv1 || !len1) {
4861 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4864 return retval < 0 ? -1 : 1;
4867 * When the result of collation is equality, that doesn't mean
4868 * that there are no differences -- some locales exclude some
4869 * characters from consideration. So to avoid false equalities,
4870 * we use the raw string as a tiebreaker.
4876 #endif /* USE_LOCALE_COLLATE */
4878 return sv_cmp(sv1, sv2);
4881 #ifdef USE_LOCALE_COLLATE
4883 * Any scalar variable may carry an 'o' magic that contains the
4884 * scalar data of the variable transformed to such a format that
4885 * a normal memory comparison can be used to compare the data
4886 * according to the locale settings.
4889 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4893 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4894 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4899 Safefree(mg->mg_ptr);
4901 if ((xf = mem_collxfrm(s, len, &xlen))) {
4902 if (SvREADONLY(sv)) {
4905 return xf + sizeof(PL_collation_ix);
4908 sv_magic(sv, 0, 'o', 0, 0);
4909 mg = mg_find(sv, 'o');
4922 if (mg && mg->mg_ptr) {
4924 return mg->mg_ptr + sizeof(PL_collation_ix);
4932 #endif /* USE_LOCALE_COLLATE */
4937 Get a line from the filehandle and store it into the SV, optionally
4938 appending to the currently-stored string.
4944 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4948 register STDCHAR rslast;
4949 register STDCHAR *bp;
4953 SV_CHECK_THINKFIRST(sv);
4954 (void)SvUPGRADE(sv, SVt_PV);
4958 if (RsSNARF(PL_rs)) {
4962 else if (RsRECORD(PL_rs)) {
4963 I32 recsize, bytesread;
4966 /* Grab the size of the record we're getting */
4967 recsize = SvIV(SvRV(PL_rs));
4968 (void)SvPOK_only(sv); /* Validate pointer */
4969 buffer = SvGROW(sv, recsize + 1);
4972 /* VMS wants read instead of fread, because fread doesn't respect */
4973 /* RMS record boundaries. This is not necessarily a good thing to be */
4974 /* doing, but we've got no other real choice */
4975 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4977 bytesread = PerlIO_read(fp, buffer, recsize);
4979 SvCUR_set(sv, bytesread);
4980 buffer[bytesread] = '\0';
4981 if (PerlIO_isutf8(fp))
4985 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4987 else if (RsPARA(PL_rs)) {
4992 /* Get $/ i.e. PL_rs into same encoding as stream wants */
4993 if (PerlIO_isutf8(fp)) {
4994 rsptr = SvPVutf8(PL_rs, rslen);
4997 if (SvUTF8(PL_rs)) {
4998 if (!sv_utf8_downgrade(PL_rs, TRUE)) {
4999 Perl_croak(aTHX_ "Wide character in $/");
5002 rsptr = SvPV(PL_rs, rslen);
5006 rslast = rslen ? rsptr[rslen - 1] : '\0';
5008 if (RsPARA(PL_rs)) { /* have to do this both before and after */
5009 do { /* to make sure file boundaries work right */
5012 i = PerlIO_getc(fp);
5016 PerlIO_ungetc(fp,i);
5022 /* See if we know enough about I/O mechanism to cheat it ! */
5024 /* This used to be #ifdef test - it is made run-time test for ease
5025 of abstracting out stdio interface. One call should be cheap
5026 enough here - and may even be a macro allowing compile
5030 if (PerlIO_fast_gets(fp)) {
5033 * We're going to steal some values from the stdio struct
5034 * and put EVERYTHING in the innermost loop into registers.
5036 register STDCHAR *ptr;
5040 #if defined(VMS) && defined(PERLIO_IS_STDIO)
5041 /* An ungetc()d char is handled separately from the regular
5042 * buffer, so we getc() it back out and stuff it in the buffer.
5044 i = PerlIO_getc(fp);
5045 if (i == EOF) return 0;
5046 *(--((*fp)->_ptr)) = (unsigned char) i;
5050 /* Here is some breathtakingly efficient cheating */
5052 cnt = PerlIO_get_cnt(fp); /* get count into register */
5053 (void)SvPOK_only(sv); /* validate pointer */
5054 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
5055 if (cnt > 80 && SvLEN(sv) > append) {
5056 shortbuffered = cnt - SvLEN(sv) + append + 1;
5057 cnt -= shortbuffered;
5061 /* remember that cnt can be negative */
5062 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
5067 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
5068 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
5069 DEBUG_P(PerlIO_printf(Perl_debug_log,
5070 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
5071 DEBUG_P(PerlIO_printf(Perl_debug_log,
5072 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5073 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5074 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
5079 while (cnt > 0) { /* this | eat */
5081 if ((*bp++ = *ptr++) == rslast) /* really | dust */
5082 goto thats_all_folks; /* screams | sed :-) */
5086 Copy(ptr, bp, cnt, char); /* this | eat */
5087 bp += cnt; /* screams | dust */
5088 ptr += cnt; /* louder | sed :-) */
5093 if (shortbuffered) { /* oh well, must extend */
5094 cnt = shortbuffered;
5096 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
5098 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
5099 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
5103 DEBUG_P(PerlIO_printf(Perl_debug_log,
5104 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
5105 PTR2UV(ptr),(long)cnt));
5106 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
5107 DEBUG_P(PerlIO_printf(Perl_debug_log,
5108 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5109 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5110 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
5111 /* This used to call 'filbuf' in stdio form, but as that behaves like
5112 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
5113 another abstraction. */
5114 i = PerlIO_getc(fp); /* get more characters */
5115 DEBUG_P(PerlIO_printf(Perl_debug_log,
5116 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
5117 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
5118 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
5119 cnt = PerlIO_get_cnt(fp);
5120 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
5121 DEBUG_P(PerlIO_printf(Perl_debug_log,
5122 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
5124 if (i == EOF) /* all done for ever? */
5125 goto thats_really_all_folks;
5127 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
5129 SvGROW(sv, bpx + cnt + 2);
5130 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
5132 *bp++ = i; /* store character from PerlIO_getc */
5134 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
5135 goto thats_all_folks;
5139 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
5140 memNE((char*)bp - rslen, rsptr, rslen))
5141 goto screamer; /* go back to the fray */
5142 thats_really_all_folks:
5144 cnt += shortbuffered;
5145 DEBUG_P(PerlIO_printf(Perl_debug_log,
5146 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
5147 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
5148 DEBUG_P(PerlIO_printf(Perl_debug_log,
5149 "Screamer: end: 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)));
5153 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
5154 DEBUG_P(PerlIO_printf(Perl_debug_log,
5155 "Screamer: done, len=%ld, string=|%.*s|\n",
5156 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
5161 /*The big, slow, and stupid way */
5164 /* Need to work around EPOC SDK features */
5165 /* On WINS: MS VC5 generates calls to _chkstk, */
5166 /* if a `large' stack frame is allocated */
5167 /* gcc on MARM does not generate calls like these */
5173 register STDCHAR *bpe = buf + sizeof(buf);
5175 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
5176 ; /* keep reading */
5180 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
5181 /* Accomodate broken VAXC compiler, which applies U8 cast to
5182 * both args of ?: operator, causing EOF to change into 255
5184 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
5188 sv_catpvn(sv, (char *) buf, cnt);
5190 sv_setpvn(sv, (char *) buf, cnt);
5192 if (i != EOF && /* joy */
5194 SvCUR(sv) < rslen ||
5195 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
5199 * If we're reading from a TTY and we get a short read,
5200 * indicating that the user hit his EOF character, we need
5201 * to notice it now, because if we try to read from the TTY
5202 * again, the EOF condition will disappear.
5204 * The comparison of cnt to sizeof(buf) is an optimization
5205 * that prevents unnecessary calls to feof().
5209 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
5214 if (RsPARA(PL_rs)) { /* have to do this both before and after */
5215 while (i != EOF) { /* to make sure file boundaries work right */
5216 i = PerlIO_getc(fp);
5218 PerlIO_ungetc(fp,i);
5224 if (PerlIO_isutf8(fp))
5229 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
5236 Auto-increment of the value in the SV.
5242 Perl_sv_inc(pTHX_ register SV *sv)
5251 if (SvTHINKFIRST(sv)) {
5252 if (SvREADONLY(sv)) {
5253 if (PL_curcop != &PL_compiling)
5254 Perl_croak(aTHX_ PL_no_modify);
5258 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
5260 i = PTR2IV(SvRV(sv));
5265 flags = SvFLAGS(sv);
5266 if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) {
5267 /* It's (privately or publicly) a float, but not tested as an
5268 integer, so test it to see. */
5270 flags = SvFLAGS(sv);
5272 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
5273 /* It's publicly an integer, or privately an integer-not-float */
5276 if (SvUVX(sv) == UV_MAX)
5277 sv_setnv(sv, (NV)UV_MAX + 1.0);
5279 (void)SvIOK_only_UV(sv);
5282 if (SvIVX(sv) == IV_MAX)
5283 sv_setuv(sv, (UV)IV_MAX + 1);
5285 (void)SvIOK_only(sv);
5291 if (flags & SVp_NOK) {
5292 (void)SvNOK_only(sv);
5297 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
5298 if ((flags & SVTYPEMASK) < SVt_PVIV)
5299 sv_upgrade(sv, SVt_IV);
5300 (void)SvIOK_only(sv);
5305 while (isALPHA(*d)) d++;
5306 while (isDIGIT(*d)) d++;
5308 #ifdef PERL_PRESERVE_IVUV
5309 /* Got to punt this an an integer if needs be, but we don't issue
5310 warnings. Probably ought to make the sv_iv_please() that does
5311 the conversion if possible, and silently. */
5312 I32 numtype = looks_like_number(sv);
5313 if (numtype && !(numtype & IS_NUMBER_INFINITY)) {
5314 /* Need to try really hard to see if it's an integer.
5315 9.22337203685478e+18 is an integer.
5316 but "9.22337203685478e+18" + 0 is UV=9223372036854779904
5317 so $a="9.22337203685478e+18"; $a+0; $a++
5318 needs to be the same as $a="9.22337203685478e+18"; $a++
5325 /* sv_2iv *should* have made this an NV */
5326 if (flags & SVp_NOK) {
5327 (void)SvNOK_only(sv);
5331 /* I don't think we can get here. Maybe I should assert this
5332 And if we do get here I suspect that sv_setnv will croak. NWC
5334 #if defined(USE_LONG_DOUBLE)
5335 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",
5336 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5338 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%g\n",
5339 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5342 #endif /* PERL_PRESERVE_IVUV */
5343 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0);
5347 while (d >= SvPVX(sv)) {
5355 /* MKS: The original code here died if letters weren't consecutive.
5356 * at least it didn't have to worry about non-C locales. The
5357 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
5358 * arranged in order (although not consecutively) and that only
5359 * [A-Za-z] are accepted by isALPHA in the C locale.
5361 if (*d != 'z' && *d != 'Z') {
5362 do { ++*d; } while (!isALPHA(*d));
5365 *(d--) -= 'z' - 'a';
5370 *(d--) -= 'z' - 'a' + 1;
5374 /* oh,oh, the number grew */
5375 SvGROW(sv, SvCUR(sv) + 2);
5377 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
5388 Auto-decrement of the value in the SV.
5394 Perl_sv_dec(pTHX_ register SV *sv)
5402 if (SvTHINKFIRST(sv)) {
5403 if (SvREADONLY(sv)) {
5404 if (PL_curcop != &PL_compiling)
5405 Perl_croak(aTHX_ PL_no_modify);
5409 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
5411 i = PTR2IV(SvRV(sv));
5416 /* Unlike sv_inc we don't have to worry about string-never-numbers
5417 and keeping them magic. But we mustn't warn on punting */
5418 flags = SvFLAGS(sv);
5419 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
5420 /* It's publicly an integer, or privately an integer-not-float */
5423 if (SvUVX(sv) == 0) {
5424 (void)SvIOK_only(sv);
5428 (void)SvIOK_only_UV(sv);
5432 if (SvIVX(sv) == IV_MIN)
5433 sv_setnv(sv, (NV)IV_MIN - 1.0);
5435 (void)SvIOK_only(sv);
5441 if (flags & SVp_NOK) {
5443 (void)SvNOK_only(sv);
5446 if (!(flags & SVp_POK)) {
5447 if ((flags & SVTYPEMASK) < SVt_PVNV)
5448 sv_upgrade(sv, SVt_NV);
5450 (void)SvNOK_only(sv);
5453 #ifdef PERL_PRESERVE_IVUV
5455 I32 numtype = looks_like_number(sv);
5456 if (numtype && !(numtype & IS_NUMBER_INFINITY)) {
5457 /* Need to try really hard to see if it's an integer.
5458 9.22337203685478e+18 is an integer.
5459 but "9.22337203685478e+18" + 0 is UV=9223372036854779904
5460 so $a="9.22337203685478e+18"; $a+0; $a--
5461 needs to be the same as $a="9.22337203685478e+18"; $a--
5468 /* sv_2iv *should* have made this an NV */
5469 if (flags & SVp_NOK) {
5470 (void)SvNOK_only(sv);
5474 /* I don't think we can get here. Maybe I should assert this
5475 And if we do get here I suspect that sv_setnv will croak. NWC
5477 #if defined(USE_LONG_DOUBLE)
5478 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",
5479 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5481 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%g\n",
5482 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5486 #endif /* PERL_PRESERVE_IVUV */
5487 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
5491 =for apidoc sv_mortalcopy
5493 Creates a new SV which is a copy of the original SV. The new SV is marked
5499 /* Make a string that will exist for the duration of the expression
5500 * evaluation. Actually, it may have to last longer than that, but
5501 * hopefully we won't free it until it has been assigned to a
5502 * permanent location. */
5505 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
5510 sv_setsv(sv,oldstr);
5512 PL_tmps_stack[++PL_tmps_ix] = sv;
5518 =for apidoc sv_newmortal
5520 Creates a new SV which is mortal. The reference count of the SV is set to 1.
5526 Perl_sv_newmortal(pTHX)
5531 SvFLAGS(sv) = SVs_TEMP;
5533 PL_tmps_stack[++PL_tmps_ix] = sv;
5538 =for apidoc sv_2mortal
5540 Marks an SV as mortal. The SV will be destroyed when the current context
5546 /* same thing without the copying */
5549 Perl_sv_2mortal(pTHX_ register SV *sv)
5553 if (SvREADONLY(sv) && SvIMMORTAL(sv))
5556 PL_tmps_stack[++PL_tmps_ix] = sv;
5564 Creates a new SV and copies a string into it. The reference count for the
5565 SV is set to 1. If C<len> is zero, Perl will compute the length using
5566 strlen(). For efficiency, consider using C<newSVpvn> instead.
5572 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
5579 sv_setpvn(sv,s,len);
5584 =for apidoc newSVpvn
5586 Creates a new SV and copies a string into it. The reference count for the
5587 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
5588 string. You are responsible for ensuring that the source string is at least
5595 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
5600 sv_setpvn(sv,s,len);
5605 =for apidoc newSVpvn_share
5607 Creates a new SV and populates it with a string from
5608 the string table. Turns on READONLY and FAKE.
5609 The idea here is that as string table is used for shared hash
5610 keys these strings will have SvPVX == HeKEY and hash lookup
5611 will avoid string compare.
5617 Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash)
5620 bool is_utf8 = FALSE;
5625 if (is_utf8 && !(PL_hints & HINT_UTF8_DISTINCT))
5626 src = (char*)bytes_from_utf8((U8*)src, (STRLEN*)&len, &is_utf8);
5628 PERL_HASH(hash, src, len);
5630 sv_upgrade(sv, SVt_PVIV);
5631 SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash);
5643 #if defined(PERL_IMPLICIT_CONTEXT)
5645 Perl_newSVpvf_nocontext(const char* pat, ...)
5650 va_start(args, pat);
5651 sv = vnewSVpvf(pat, &args);
5658 =for apidoc newSVpvf
5660 Creates a new SV an initialize it with the string formatted like
5667 Perl_newSVpvf(pTHX_ const char* pat, ...)
5671 va_start(args, pat);
5672 sv = vnewSVpvf(pat, &args);
5678 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
5682 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5689 Creates a new SV and copies a floating point value into it.
5690 The reference count for the SV is set to 1.
5696 Perl_newSVnv(pTHX_ NV n)
5708 Creates a new SV and copies an integer into it. The reference count for the
5715 Perl_newSViv(pTHX_ IV i)
5727 Creates a new SV and copies an unsigned integer into it.
5728 The reference count for the SV is set to 1.
5734 Perl_newSVuv(pTHX_ UV u)
5744 =for apidoc newRV_noinc
5746 Creates an RV wrapper for an SV. The reference count for the original
5747 SV is B<not> incremented.
5753 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5758 sv_upgrade(sv, SVt_RV);
5765 /* newRV_inc is #defined to newRV in sv.h */
5767 Perl_newRV(pTHX_ SV *tmpRef)
5769 return newRV_noinc(SvREFCNT_inc(tmpRef));
5775 Creates a new SV which is an exact duplicate of the original SV.
5780 /* make an exact duplicate of old */
5783 Perl_newSVsv(pTHX_ register SV *old)
5789 if (SvTYPE(old) == SVTYPEMASK) {
5790 if (ckWARN_d(WARN_INTERNAL))
5791 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5806 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5814 char todo[PERL_UCHAR_MAX+1];
5819 if (!*s) { /* reset ?? searches */
5820 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5821 pm->op_pmdynflags &= ~PMdf_USED;
5826 /* reset variables */
5828 if (!HvARRAY(stash))
5831 Zero(todo, 256, char);
5833 i = (unsigned char)*s;
5837 max = (unsigned char)*s++;
5838 for ( ; i <= max; i++) {
5841 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5842 for (entry = HvARRAY(stash)[i];
5844 entry = HeNEXT(entry))
5846 if (!todo[(U8)*HeKEY(entry)])
5848 gv = (GV*)HeVAL(entry);
5850 if (SvTHINKFIRST(sv)) {
5851 if (!SvREADONLY(sv) && SvROK(sv))
5856 if (SvTYPE(sv) >= SVt_PV) {
5858 if (SvPVX(sv) != Nullch)
5865 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5867 #ifdef USE_ENVIRON_ARRAY
5869 environ[0] = Nullch;
5878 Perl_sv_2io(pTHX_ SV *sv)
5884 switch (SvTYPE(sv)) {
5892 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5896 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5898 return sv_2io(SvRV(sv));
5899 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5905 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5912 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5919 return *gvp = Nullgv, Nullcv;
5920 switch (SvTYPE(sv)) {
5939 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5940 tryAMAGICunDEREF(to_cv);
5943 if (SvTYPE(sv) == SVt_PVCV) {
5952 Perl_croak(aTHX_ "Not a subroutine reference");
5957 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5963 if (lref && !GvCVu(gv)) {
5966 tmpsv = NEWSV(704,0);
5967 gv_efullname3(tmpsv, gv, Nullch);
5968 /* XXX this is probably not what they think they're getting.
5969 * It has the same effect as "sub name;", i.e. just a forward
5971 newSUB(start_subparse(FALSE, 0),
5972 newSVOP(OP_CONST, 0, tmpsv),
5977 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5986 Returns true if the SV has a true value by Perl's rules.
5992 Perl_sv_true(pTHX_ register SV *sv)
5998 if ((tXpv = (XPV*)SvANY(sv)) &&
5999 (tXpv->xpv_cur > 1 ||
6000 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
6007 return SvIVX(sv) != 0;
6010 return SvNVX(sv) != 0.0;
6012 return sv_2bool(sv);
6018 Perl_sv_iv(pTHX_ register SV *sv)
6022 return (IV)SvUVX(sv);
6029 Perl_sv_uv(pTHX_ register SV *sv)
6034 return (UV)SvIVX(sv);
6040 Perl_sv_nv(pTHX_ register SV *sv)
6048 Perl_sv_pv(pTHX_ SV *sv)
6055 return sv_2pv(sv, &n_a);
6059 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
6065 return sv_2pv(sv, lp);
6069 =for apidoc sv_pvn_force
6071 Get a sensible string out of the SV somehow.
6077 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
6081 if (SvTHINKFIRST(sv) && !SvROK(sv))
6082 sv_force_normal(sv);
6088 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
6089 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6090 PL_op_name[PL_op->op_type]);
6094 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
6099 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
6100 SvGROW(sv, len + 1);
6101 Move(s,SvPVX(sv),len,char);
6106 SvPOK_on(sv); /* validate pointer */
6108 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
6109 PTR2UV(sv),SvPVX(sv)));
6116 Perl_sv_pvbyte(pTHX_ SV *sv)
6122 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
6124 return sv_pvn(sv,lp);
6128 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
6130 return sv_pvn_force(sv,lp);
6134 Perl_sv_pvutf8(pTHX_ SV *sv)
6136 sv_utf8_upgrade(sv);
6141 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
6143 sv_utf8_upgrade(sv);
6144 return sv_pvn(sv,lp);
6148 =for apidoc sv_pvutf8n_force
6150 Get a sensible UTF8-encoded string out of the SV somehow. See
6157 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
6159 sv_utf8_upgrade(sv);
6160 return sv_pvn_force(sv,lp);
6164 =for apidoc sv_reftype
6166 Returns a string describing what the SV is a reference to.
6172 Perl_sv_reftype(pTHX_ SV *sv, int ob)
6174 if (ob && SvOBJECT(sv))
6175 return HvNAME(SvSTASH(sv));
6177 switch (SvTYPE(sv)) {
6191 case SVt_PVLV: return "LVALUE";
6192 case SVt_PVAV: return "ARRAY";
6193 case SVt_PVHV: return "HASH";
6194 case SVt_PVCV: return "CODE";
6195 case SVt_PVGV: return "GLOB";
6196 case SVt_PVFM: return "FORMAT";
6197 case SVt_PVIO: return "IO";
6198 default: return "UNKNOWN";
6204 =for apidoc sv_isobject
6206 Returns a boolean indicating whether the SV is an RV pointing to a blessed
6207 object. If the SV is not an RV, or if the object is not blessed, then this
6214 Perl_sv_isobject(pTHX_ SV *sv)
6231 Returns a boolean indicating whether the SV is blessed into the specified
6232 class. This does not check for subtypes; use C<sv_derived_from> to verify
6233 an inheritance relationship.
6239 Perl_sv_isa(pTHX_ SV *sv, const char *name)
6251 return strEQ(HvNAME(SvSTASH(sv)), name);
6257 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
6258 it will be upgraded to one. If C<classname> is non-null then the new SV will
6259 be blessed in the specified package. The new SV is returned and its
6260 reference count is 1.
6266 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
6272 SV_CHECK_THINKFIRST(rv);
6275 if (SvTYPE(rv) >= SVt_PVMG) {
6276 U32 refcnt = SvREFCNT(rv);
6280 SvREFCNT(rv) = refcnt;
6283 if (SvTYPE(rv) < SVt_RV)
6284 sv_upgrade(rv, SVt_RV);
6285 else if (SvTYPE(rv) > SVt_RV) {
6286 (void)SvOOK_off(rv);
6287 if (SvPVX(rv) && SvLEN(rv))
6288 Safefree(SvPVX(rv));
6298 HV* stash = gv_stashpv(classname, TRUE);
6299 (void)sv_bless(rv, stash);
6305 =for apidoc sv_setref_pv
6307 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
6308 argument will be upgraded to an RV. That RV will be modified to point to
6309 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
6310 into the SV. The C<classname> argument indicates the package for the
6311 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6312 will be returned and will have a reference count of 1.
6314 Do not use with other Perl types such as HV, AV, SV, CV, because those
6315 objects will become corrupted by the pointer copy process.
6317 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
6323 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
6326 sv_setsv(rv, &PL_sv_undef);
6330 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
6335 =for apidoc sv_setref_iv
6337 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
6338 argument will be upgraded to an RV. That RV will be modified to point to
6339 the new SV. The C<classname> argument indicates the package for the
6340 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6341 will be returned and will have a reference count of 1.
6347 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
6349 sv_setiv(newSVrv(rv,classname), iv);
6354 =for apidoc sv_setref_nv
6356 Copies a double into a new SV, optionally blessing the SV. The C<rv>
6357 argument will be upgraded to an RV. That RV will be modified to point to
6358 the new SV. The C<classname> argument indicates the package for the
6359 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6360 will be returned and will have a reference count of 1.
6366 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
6368 sv_setnv(newSVrv(rv,classname), nv);
6373 =for apidoc sv_setref_pvn
6375 Copies a string into a new SV, optionally blessing the SV. The length of the
6376 string must be specified with C<n>. The C<rv> argument will be upgraded to
6377 an RV. That RV will be modified to point to the new SV. The C<classname>
6378 argument indicates the package for the blessing. Set C<classname> to
6379 C<Nullch> to avoid the blessing. The new SV will be returned and will have
6380 a reference count of 1.
6382 Note that C<sv_setref_pv> copies the pointer while this copies the string.
6388 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
6390 sv_setpvn(newSVrv(rv,classname), pv, n);
6395 =for apidoc sv_bless
6397 Blesses an SV into a specified package. The SV must be an RV. The package
6398 must be designated by its stash (see C<gv_stashpv()>). The reference count
6399 of the SV is unaffected.
6405 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
6409 Perl_croak(aTHX_ "Can't bless non-reference value");
6411 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
6412 if (SvREADONLY(tmpRef))
6413 Perl_croak(aTHX_ PL_no_modify);
6414 if (SvOBJECT(tmpRef)) {
6415 if (SvTYPE(tmpRef) != SVt_PVIO)
6417 SvREFCNT_dec(SvSTASH(tmpRef));
6420 SvOBJECT_on(tmpRef);
6421 if (SvTYPE(tmpRef) != SVt_PVIO)
6423 (void)SvUPGRADE(tmpRef, SVt_PVMG);
6424 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
6435 S_sv_unglob(pTHX_ SV *sv)
6439 assert(SvTYPE(sv) == SVt_PVGV);
6444 SvREFCNT_dec(GvSTASH(sv));
6445 GvSTASH(sv) = Nullhv;
6447 sv_unmagic(sv, '*');
6448 Safefree(GvNAME(sv));
6451 /* need to keep SvANY(sv) in the right arena */
6452 xpvmg = new_XPVMG();
6453 StructCopy(SvANY(sv), xpvmg, XPVMG);
6454 del_XPVGV(SvANY(sv));
6457 SvFLAGS(sv) &= ~SVTYPEMASK;
6458 SvFLAGS(sv) |= SVt_PVMG;
6462 =for apidoc sv_unref_flags
6464 Unsets the RV status of the SV, and decrements the reference count of
6465 whatever was being referenced by the RV. This can almost be thought of
6466 as a reversal of C<newSVrv>. The C<cflags> argument can contain
6467 C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented
6468 (otherwise the decrementing is conditional on the reference count being
6469 different from one or the reference being a readonly SV).
6476 Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags)
6480 if (SvWEAKREF(sv)) {
6488 if (SvREFCNT(rv) != 1 || SvREADONLY(rv) || flags) /* SV_IMMEDIATE_UNREF */
6490 else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */
6491 sv_2mortal(rv); /* Schedule for freeing later */
6495 =for apidoc sv_unref
6497 Unsets the RV status of the SV, and decrements the reference count of
6498 whatever was being referenced by the RV. This can almost be thought of
6499 as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
6500 being zero. See C<SvROK_off>.
6506 Perl_sv_unref(pTHX_ SV *sv)
6508 sv_unref_flags(sv, 0);
6512 Perl_sv_taint(pTHX_ SV *sv)
6514 sv_magic((sv), Nullsv, 't', Nullch, 0);
6518 Perl_sv_untaint(pTHX_ SV *sv)
6520 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
6521 MAGIC *mg = mg_find(sv, 't');
6528 Perl_sv_tainted(pTHX_ SV *sv)
6530 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
6531 MAGIC *mg = mg_find(sv, 't');
6532 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
6539 =for apidoc sv_setpviv
6541 Copies an integer into the given SV, also updating its string value.
6542 Does not handle 'set' magic. See C<sv_setpviv_mg>.
6548 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
6550 char buf[TYPE_CHARS(UV)];
6552 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
6554 sv_setpvn(sv, ptr, ebuf - ptr);
6559 =for apidoc sv_setpviv_mg
6561 Like C<sv_setpviv>, but also handles 'set' magic.
6567 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
6569 char buf[TYPE_CHARS(UV)];
6571 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
6573 sv_setpvn(sv, ptr, ebuf - ptr);
6577 #if defined(PERL_IMPLICIT_CONTEXT)
6579 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
6583 va_start(args, pat);
6584 sv_vsetpvf(sv, pat, &args);
6590 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
6594 va_start(args, pat);
6595 sv_vsetpvf_mg(sv, pat, &args);
6601 =for apidoc sv_setpvf
6603 Processes its arguments like C<sprintf> and sets an SV to the formatted
6604 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
6610 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
6613 va_start(args, pat);
6614 sv_vsetpvf(sv, pat, &args);
6619 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
6621 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6625 =for apidoc sv_setpvf_mg
6627 Like C<sv_setpvf>, but also handles 'set' magic.
6633 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
6636 va_start(args, pat);
6637 sv_vsetpvf_mg(sv, pat, &args);
6642 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6644 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6648 #if defined(PERL_IMPLICIT_CONTEXT)
6650 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
6654 va_start(args, pat);
6655 sv_vcatpvf(sv, pat, &args);
6660 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
6664 va_start(args, pat);
6665 sv_vcatpvf_mg(sv, pat, &args);
6671 =for apidoc sv_catpvf
6673 Processes its arguments like C<sprintf> and appends the formatted output
6674 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
6675 typically be called after calling this function to handle 'set' magic.
6681 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
6684 va_start(args, pat);
6685 sv_vcatpvf(sv, pat, &args);
6690 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
6692 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6696 =for apidoc sv_catpvf_mg
6698 Like C<sv_catpvf>, but also handles 'set' magic.
6704 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
6707 va_start(args, pat);
6708 sv_vcatpvf_mg(sv, pat, &args);
6713 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6715 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6720 =for apidoc sv_vsetpvfn
6722 Works like C<vcatpvfn> but copies the text into the SV instead of
6729 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6731 sv_setpvn(sv, "", 0);
6732 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
6736 S_expect_number(pTHX_ char** pattern)
6739 switch (**pattern) {
6740 case '1': case '2': case '3':
6741 case '4': case '5': case '6':
6742 case '7': case '8': case '9':
6743 while (isDIGIT(**pattern))
6744 var = var * 10 + (*(*pattern)++ - '0');
6748 #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern))
6751 =for apidoc sv_vcatpvfn
6753 Processes its arguments like C<vsprintf> and appends the formatted output
6754 to an SV. Uses an array of SVs if the C style variable argument list is
6755 missing (NULL). When running with taint checks enabled, indicates via
6756 C<maybe_tainted> if results are untrustworthy (often due to the use of
6763 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6770 static char nullstr[] = "(null)";
6773 /* no matter what, this is a string now */
6774 (void)SvPV_force(sv, origlen);
6776 /* special-case "", "%s", and "%_" */
6779 if (patlen == 2 && pat[0] == '%') {
6783 char *s = va_arg(*args, char*);
6784 sv_catpv(sv, s ? s : nullstr);
6786 else if (svix < svmax) {
6787 sv_catsv(sv, *svargs);
6788 if (DO_UTF8(*svargs))
6794 argsv = va_arg(*args, SV*);
6795 sv_catsv(sv, argsv);
6800 /* See comment on '_' below */
6805 patend = (char*)pat + patlen;
6806 for (p = (char*)pat; p < patend; p = q) {
6809 bool vectorize = FALSE;
6810 bool vectorarg = FALSE;
6811 bool vec_utf = FALSE;
6817 bool has_precis = FALSE;
6819 bool is_utf = FALSE;
6822 U8 utf8buf[UTF8_MAXLEN+1];
6823 STRLEN esignlen = 0;
6825 char *eptr = Nullch;
6827 /* Times 4: a decimal digit takes more than 3 binary digits.
6828 * NV_DIG: mantissa takes than many decimal digits.
6829 * Plus 32: Playing safe. */
6830 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6831 /* large enough for "%#.#f" --chip */
6832 /* what about long double NVs? --jhi */
6835 U8 *vecstr = Null(U8*);
6847 STRLEN dotstrlen = 1;
6848 I32 efix = 0; /* explicit format parameter index */
6849 I32 ewix = 0; /* explicit width index */
6850 I32 epix = 0; /* explicit precision index */
6851 I32 evix = 0; /* explicit vector index */
6852 bool asterisk = FALSE;
6854 /* echo everything up to the next format specification */
6855 for (q = p; q < patend && *q != '%'; ++q) ;
6857 sv_catpvn(sv, p, q - p);
6864 We allow format specification elements in this order:
6865 \d+\$ explicit format parameter index
6867 \*?(\d+\$)?v vector with optional (optionally specified) arg
6868 \d+|\*(\d+\$)? width using optional (optionally specified) arg
6869 \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg
6871 [%bcdefginopsux_DFOUX] format (mandatory)
6873 if (EXPECT_NUMBER(q, width)) {
6914 if (EXPECT_NUMBER(q, ewix))
6923 if ((vectorarg = asterisk)) {
6933 EXPECT_NUMBER(q, width);
6938 vecsv = va_arg(*args, SV*);
6940 vecsv = (evix ? evix <= svmax : svix < svmax) ?
6941 svargs[ewix ? ewix-1 : svix++] : &PL_sv_undef;
6942 dotstr = SvPVx(vecsv, dotstrlen);
6947 vecsv = va_arg(*args, SV*);
6948 vecstr = (U8*)SvPVx(vecsv,veclen);
6949 vec_utf = DO_UTF8(vecsv);
6951 else if (efix ? efix <= svmax : svix < svmax) {
6952 vecsv = svargs[efix ? efix-1 : svix++];
6953 vecstr = (U8*)SvPVx(vecsv,veclen);
6954 vec_utf = DO_UTF8(vecsv);
6964 i = va_arg(*args, int);
6966 i = (ewix ? ewix <= svmax : svix < svmax) ?
6967 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6969 width = (i < 0) ? -i : i;
6979 if (EXPECT_NUMBER(q, epix) && *q++ != '$')
6982 i = va_arg(*args, int);
6984 i = (ewix ? ewix <= svmax : svix < svmax)
6985 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6986 precis = (i < 0) ? 0 : i;
6991 precis = precis * 10 + (*q++ - '0');
6999 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
7010 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
7011 if (*(q + 1) == 'l') { /* lld, llf */
7034 argsv = (efix ? efix <= svmax : svix < svmax) ?
7035 svargs[efix ? efix-1 : svix++] : &PL_sv_undef;
7042 uv = args ? va_arg(*args, int) : SvIVx(argsv);
7043 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
7044 eptr = (char*)utf8buf;
7045 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
7057 eptr = va_arg(*args, char*);
7059 #ifdef MACOS_TRADITIONAL
7060 /* On MacOS, %#s format is used for Pascal strings */
7065 elen = strlen(eptr);
7068 elen = sizeof nullstr - 1;
7072 eptr = SvPVx(argsv, elen);
7073 if (DO_UTF8(argsv)) {
7074 if (has_precis && precis < elen) {
7076 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
7079 if (width) { /* fudge width (can't fudge elen) */
7080 width += elen - sv_len_utf8(argsv);
7089 * The "%_" hack might have to be changed someday,
7090 * if ISO or ANSI decide to use '_' for something.
7091 * So we keep it hidden from users' code.
7095 argsv = va_arg(*args, SV*);
7096 eptr = SvPVx(argsv, elen);
7102 if (has_precis && elen > precis)
7111 uv = PTR2UV(args ? va_arg(*args, void*) : argsv);
7129 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
7139 case 'h': iv = (short)va_arg(*args, int); break;
7140 default: iv = va_arg(*args, int); break;
7141 case 'l': iv = va_arg(*args, long); break;
7142 case 'V': iv = va_arg(*args, IV); break;
7144 case 'q': iv = va_arg(*args, Quad_t); break;
7151 case 'h': iv = (short)iv; break;
7153 case 'l': iv = (long)iv; break;
7156 case 'q': iv = (Quad_t)iv; break;
7163 esignbuf[esignlen++] = plus;
7167 esignbuf[esignlen++] = '-';
7209 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
7219 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
7220 default: uv = va_arg(*args, unsigned); break;
7221 case 'l': uv = va_arg(*args, unsigned long); break;
7222 case 'V': uv = va_arg(*args, UV); break;
7224 case 'q': uv = va_arg(*args, Quad_t); break;
7231 case 'h': uv = (unsigned short)uv; break;
7233 case 'l': uv = (unsigned long)uv; break;
7236 case 'q': uv = (Quad_t)uv; break;
7242 eptr = ebuf + sizeof ebuf;
7248 p = (char*)((c == 'X')
7249 ? "0123456789ABCDEF" : "0123456789abcdef");
7255 esignbuf[esignlen++] = '0';
7256 esignbuf[esignlen++] = c; /* 'x' or 'X' */
7262 *--eptr = '0' + dig;
7264 if (alt && *eptr != '0')
7270 *--eptr = '0' + dig;
7273 esignbuf[esignlen++] = '0';
7274 esignbuf[esignlen++] = 'b';
7277 default: /* it had better be ten or less */
7278 #if defined(PERL_Y2KWARN)
7279 if (ckWARN(WARN_Y2K)) {
7281 char *s = SvPV(sv,n);
7282 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
7283 && (n == 2 || !isDIGIT(s[n-3])))
7285 Perl_warner(aTHX_ WARN_Y2K,
7286 "Possible Y2K bug: %%%c %s",
7287 c, "format string following '19'");
7293 *--eptr = '0' + dig;
7294 } while (uv /= base);
7297 elen = (ebuf + sizeof ebuf) - eptr;
7300 zeros = precis - elen;
7301 else if (precis == 0 && elen == 1 && *eptr == '0')
7306 /* FLOATING POINT */
7309 c = 'f'; /* maybe %F isn't supported here */
7315 /* This is evil, but floating point is even more evil */
7318 nv = args ? va_arg(*args, NV) : SvNVx(argsv);
7321 if (c != 'e' && c != 'E') {
7323 (void)Perl_frexp(nv, &i);
7324 if (i == PERL_INT_MIN)
7325 Perl_die(aTHX_ "panic: frexp");
7327 need = BIT_DIGITS(i);
7329 need += has_precis ? precis : 6; /* known default */
7333 need += 20; /* fudge factor */
7334 if (PL_efloatsize < need) {
7335 Safefree(PL_efloatbuf);
7336 PL_efloatsize = need + 20; /* more fudge */
7337 New(906, PL_efloatbuf, PL_efloatsize, char);
7338 PL_efloatbuf[0] = '\0';
7341 eptr = ebuf + sizeof ebuf;
7344 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
7346 /* Copy the one or more characters in a long double
7347 * format before the 'base' ([efgEFG]) character to
7348 * the format string. */
7349 static char const prifldbl[] = PERL_PRIfldbl;
7350 char const *p = prifldbl + sizeof(prifldbl) - 3;
7351 while (p >= prifldbl) { *--eptr = *p--; }
7356 do { *--eptr = '0' + (base % 10); } while (base /= 10);
7361 do { *--eptr = '0' + (base % 10); } while (base /= 10);
7373 /* No taint. Otherwise we are in the strange situation
7374 * where printf() taints but print($float) doesn't.
7376 (void)sprintf(PL_efloatbuf, eptr, nv);
7378 eptr = PL_efloatbuf;
7379 elen = strlen(PL_efloatbuf);
7386 i = SvCUR(sv) - origlen;
7389 case 'h': *(va_arg(*args, short*)) = i; break;
7390 default: *(va_arg(*args, int*)) = i; break;
7391 case 'l': *(va_arg(*args, long*)) = i; break;
7392 case 'V': *(va_arg(*args, IV*)) = i; break;
7394 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
7399 sv_setuv_mg(argsv, (UV)i);
7400 continue; /* not "break" */
7407 if (!args && ckWARN(WARN_PRINTF) &&
7408 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
7409 SV *msg = sv_newmortal();
7410 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
7411 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
7414 Perl_sv_catpvf(aTHX_ msg,
7415 "\"%%%c\"", c & 0xFF);
7417 Perl_sv_catpvf(aTHX_ msg,
7418 "\"%%\\%03"UVof"\"",
7421 sv_catpv(msg, "end of string");
7422 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
7425 /* output mangled stuff ... */
7431 /* ... right here, because formatting flags should not apply */
7432 SvGROW(sv, SvCUR(sv) + elen + 1);
7434 Copy(eptr, p, elen, char);
7437 SvCUR(sv) = p - SvPVX(sv);
7438 continue; /* not "break" */
7441 have = esignlen + zeros + elen;
7442 need = (have > width ? have : width);
7445 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
7447 if (esignlen && fill == '0') {
7448 for (i = 0; i < esignlen; i++)
7452 memset(p, fill, gap);
7455 if (esignlen && fill != '0') {
7456 for (i = 0; i < esignlen; i++)
7460 for (i = zeros; i; i--)
7464 Copy(eptr, p, elen, char);
7468 memset(p, ' ', gap);
7473 Copy(dotstr, p, dotstrlen, char);
7477 vectorize = FALSE; /* done iterating over vecstr */
7482 SvCUR(sv) = p - SvPVX(sv);
7490 #if defined(USE_ITHREADS)
7492 #if defined(USE_THREADS)
7493 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
7496 #ifndef GpREFCNT_inc
7497 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
7501 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
7502 #define av_dup(s) (AV*)sv_dup((SV*)s)
7503 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
7504 #define hv_dup(s) (HV*)sv_dup((SV*)s)
7505 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
7506 #define cv_dup(s) (CV*)sv_dup((SV*)s)
7507 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
7508 #define io_dup(s) (IO*)sv_dup((SV*)s)
7509 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
7510 #define gv_dup(s) (GV*)sv_dup((SV*)s)
7511 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
7512 #define SAVEPV(p) (p ? savepv(p) : Nullch)
7513 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
7516 Perl_re_dup(pTHX_ REGEXP *r)
7518 /* XXX fix when pmop->op_pmregexp becomes shared */
7519 return ReREFCNT_inc(r);
7523 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
7527 return (PerlIO*)NULL;
7529 /* look for it in the table first */
7530 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
7534 /* create anew and remember what it is */
7535 ret = PerlIO_fdupopen(aTHX_ fp);
7536 ptr_table_store(PL_ptr_table, fp, ret);
7541 Perl_dirp_dup(pTHX_ DIR *dp)
7550 Perl_gp_dup(pTHX_ GP *gp)
7555 /* look for it in the table first */
7556 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
7560 /* create anew and remember what it is */
7561 Newz(0, ret, 1, GP);
7562 ptr_table_store(PL_ptr_table, gp, ret);
7565 ret->gp_refcnt = 0; /* must be before any other dups! */
7566 ret->gp_sv = sv_dup_inc(gp->gp_sv);
7567 ret->gp_io = io_dup_inc(gp->gp_io);
7568 ret->gp_form = cv_dup_inc(gp->gp_form);
7569 ret->gp_av = av_dup_inc(gp->gp_av);
7570 ret->gp_hv = hv_dup_inc(gp->gp_hv);
7571 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
7572 ret->gp_cv = cv_dup_inc(gp->gp_cv);
7573 ret->gp_cvgen = gp->gp_cvgen;
7574 ret->gp_flags = gp->gp_flags;
7575 ret->gp_line = gp->gp_line;
7576 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
7581 Perl_mg_dup(pTHX_ MAGIC *mg)
7583 MAGIC *mgret = (MAGIC*)NULL;
7586 return (MAGIC*)NULL;
7587 /* look for it in the table first */
7588 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
7592 for (; mg; mg = mg->mg_moremagic) {
7594 Newz(0, nmg, 1, MAGIC);
7598 mgprev->mg_moremagic = nmg;
7599 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
7600 nmg->mg_private = mg->mg_private;
7601 nmg->mg_type = mg->mg_type;
7602 nmg->mg_flags = mg->mg_flags;
7603 if (mg->mg_type == 'r') {
7604 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
7607 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
7608 ? sv_dup_inc(mg->mg_obj)
7609 : sv_dup(mg->mg_obj);
7611 nmg->mg_len = mg->mg_len;
7612 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
7613 if (mg->mg_ptr && mg->mg_type != 'g') {
7614 if (mg->mg_len >= 0) {
7615 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
7616 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
7617 AMT *amtp = (AMT*)mg->mg_ptr;
7618 AMT *namtp = (AMT*)nmg->mg_ptr;
7620 for (i = 1; i < NofAMmeth; i++) {
7621 namtp->table[i] = cv_dup_inc(amtp->table[i]);
7625 else if (mg->mg_len == HEf_SVKEY)
7626 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
7634 Perl_ptr_table_new(pTHX)
7637 Newz(0, tbl, 1, PTR_TBL_t);
7640 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
7645 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
7647 PTR_TBL_ENT_t *tblent;
7648 UV hash = PTR2UV(sv);
7650 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
7651 for (; tblent; tblent = tblent->next) {
7652 if (tblent->oldval == sv)
7653 return tblent->newval;
7659 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
7661 PTR_TBL_ENT_t *tblent, **otblent;
7662 /* XXX this may be pessimal on platforms where pointers aren't good
7663 * hash values e.g. if they grow faster in the most significant
7665 UV hash = PTR2UV(oldv);
7669 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
7670 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
7671 if (tblent->oldval == oldv) {
7672 tblent->newval = newv;
7677 Newz(0, tblent, 1, PTR_TBL_ENT_t);
7678 tblent->oldval = oldv;
7679 tblent->newval = newv;
7680 tblent->next = *otblent;
7683 if (i && tbl->tbl_items > tbl->tbl_max)
7684 ptr_table_split(tbl);
7688 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
7690 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
7691 UV oldsize = tbl->tbl_max + 1;
7692 UV newsize = oldsize * 2;
7695 Renew(ary, newsize, PTR_TBL_ENT_t*);
7696 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
7697 tbl->tbl_max = --newsize;
7699 for (i=0; i < oldsize; i++, ary++) {
7700 PTR_TBL_ENT_t **curentp, **entp, *ent;
7703 curentp = ary + oldsize;
7704 for (entp = ary, ent = *ary; ent; ent = *entp) {
7705 if ((newsize & PTR2UV(ent->oldval)) != i) {
7707 ent->next = *curentp;
7718 Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl)
7720 register PTR_TBL_ENT_t **array;
7721 register PTR_TBL_ENT_t *entry;
7722 register PTR_TBL_ENT_t *oentry = Null(PTR_TBL_ENT_t*);
7726 if (!tbl || !tbl->tbl_items) {
7730 array = tbl->tbl_ary;
7737 entry = entry->next;
7741 if (++riter > max) {
7744 entry = array[riter];
7752 Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl)
7757 ptr_table_clear(tbl);
7758 Safefree(tbl->tbl_ary);
7767 S_gv_share(pTHX_ SV *sstr)
7770 SV *sv = &PL_sv_no; /* just need SvREADONLY-ness */
7772 if (GvIO(gv) || GvFORM(gv)) {
7773 GvSHARED_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */
7775 else if (!GvCV(gv)) {
7779 /* CvPADLISTs cannot be shared */
7780 if (!CvXSUB(GvCV(gv))) {
7785 if (!GvSHARED(gv)) {
7787 PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n",
7788 HvNAME(GvSTASH(gv)), GvNAME(gv));
7794 * write attempts will die with
7795 * "Modification of a read-only value attempted"
7801 SvREADONLY_on(GvSV(gv));
7808 SvREADONLY_on(GvAV(gv));
7815 SvREADONLY_on(GvAV(gv));
7818 return sstr; /* he_dup() will SvREFCNT_inc() */
7822 Perl_sv_dup(pTHX_ SV *sstr)
7826 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
7828 /* look for it in the table first */
7829 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
7833 /* create anew and remember what it is */
7835 ptr_table_store(PL_ptr_table, sstr, dstr);
7838 SvFLAGS(dstr) = SvFLAGS(sstr);
7839 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
7840 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7843 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7844 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7845 PL_watch_pvx, SvPVX(sstr));
7848 switch (SvTYPE(sstr)) {
7853 SvANY(dstr) = new_XIV();
7854 SvIVX(dstr) = SvIVX(sstr);
7857 SvANY(dstr) = new_XNV();
7858 SvNVX(dstr) = SvNVX(sstr);
7861 SvANY(dstr) = new_XRV();
7862 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7865 SvANY(dstr) = new_XPV();
7866 SvCUR(dstr) = SvCUR(sstr);
7867 SvLEN(dstr) = SvLEN(sstr);
7869 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7870 else if (SvPVX(sstr) && SvLEN(sstr))
7871 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7873 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7876 SvANY(dstr) = new_XPVIV();
7877 SvCUR(dstr) = SvCUR(sstr);
7878 SvLEN(dstr) = SvLEN(sstr);
7879 SvIVX(dstr) = SvIVX(sstr);
7881 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7882 else if (SvPVX(sstr) && SvLEN(sstr))
7883 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7885 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7888 SvANY(dstr) = new_XPVNV();
7889 SvCUR(dstr) = SvCUR(sstr);
7890 SvLEN(dstr) = SvLEN(sstr);
7891 SvIVX(dstr) = SvIVX(sstr);
7892 SvNVX(dstr) = SvNVX(sstr);
7894 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7895 else if (SvPVX(sstr) && SvLEN(sstr))
7896 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7898 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7901 SvANY(dstr) = new_XPVMG();
7902 SvCUR(dstr) = SvCUR(sstr);
7903 SvLEN(dstr) = SvLEN(sstr);
7904 SvIVX(dstr) = SvIVX(sstr);
7905 SvNVX(dstr) = SvNVX(sstr);
7906 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7907 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7909 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7910 else if (SvPVX(sstr) && SvLEN(sstr))
7911 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7913 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7916 SvANY(dstr) = new_XPVBM();
7917 SvCUR(dstr) = SvCUR(sstr);
7918 SvLEN(dstr) = SvLEN(sstr);
7919 SvIVX(dstr) = SvIVX(sstr);
7920 SvNVX(dstr) = SvNVX(sstr);
7921 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7922 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7924 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7925 else if (SvPVX(sstr) && SvLEN(sstr))
7926 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7928 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7929 BmRARE(dstr) = BmRARE(sstr);
7930 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7931 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7934 SvANY(dstr) = new_XPVLV();
7935 SvCUR(dstr) = SvCUR(sstr);
7936 SvLEN(dstr) = SvLEN(sstr);
7937 SvIVX(dstr) = SvIVX(sstr);
7938 SvNVX(dstr) = SvNVX(sstr);
7939 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7940 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7942 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7943 else if (SvPVX(sstr) && SvLEN(sstr))
7944 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7946 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7947 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7948 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7949 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7950 LvTYPE(dstr) = LvTYPE(sstr);
7953 if (GvSHARED((GV*)sstr)) {
7955 if ((share = gv_share(sstr))) {
7959 PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n",
7960 HvNAME(GvSTASH(share)), GvNAME(share));
7965 SvANY(dstr) = new_XPVGV();
7966 SvCUR(dstr) = SvCUR(sstr);
7967 SvLEN(dstr) = SvLEN(sstr);
7968 SvIVX(dstr) = SvIVX(sstr);
7969 SvNVX(dstr) = SvNVX(sstr);
7970 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7971 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7973 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7974 else if (SvPVX(sstr) && SvLEN(sstr))
7975 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7977 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7978 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7979 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7980 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7981 GvFLAGS(dstr) = GvFLAGS(sstr);
7982 GvGP(dstr) = gp_dup(GvGP(sstr));
7983 (void)GpREFCNT_inc(GvGP(dstr));
7986 SvANY(dstr) = new_XPVIO();
7987 SvCUR(dstr) = SvCUR(sstr);
7988 SvLEN(dstr) = SvLEN(sstr);
7989 SvIVX(dstr) = SvIVX(sstr);
7990 SvNVX(dstr) = SvNVX(sstr);
7991 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7992 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7994 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7995 else if (SvPVX(sstr) && SvLEN(sstr))
7996 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7998 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7999 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
8000 if (IoOFP(sstr) == IoIFP(sstr))
8001 IoOFP(dstr) = IoIFP(dstr);
8003 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
8004 /* PL_rsfp_filters entries have fake IoDIRP() */
8005 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
8006 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
8008 IoDIRP(dstr) = IoDIRP(sstr);
8009 IoLINES(dstr) = IoLINES(sstr);
8010 IoPAGE(dstr) = IoPAGE(sstr);
8011 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
8012 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
8013 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
8014 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
8015 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
8016 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
8017 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
8018 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
8019 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
8020 IoTYPE(dstr) = IoTYPE(sstr);
8021 IoFLAGS(dstr) = IoFLAGS(sstr);
8024 SvANY(dstr) = new_XPVAV();
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));
8031 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
8032 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
8033 if (AvARRAY((AV*)sstr)) {
8034 SV **dst_ary, **src_ary;
8035 SSize_t items = AvFILLp((AV*)sstr) + 1;
8037 src_ary = AvARRAY((AV*)sstr);
8038 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
8039 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
8040 SvPVX(dstr) = (char*)dst_ary;
8041 AvALLOC((AV*)dstr) = dst_ary;
8042 if (AvREAL((AV*)sstr)) {
8044 *dst_ary++ = sv_dup_inc(*src_ary++);
8048 *dst_ary++ = sv_dup(*src_ary++);
8050 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
8051 while (items-- > 0) {
8052 *dst_ary++ = &PL_sv_undef;
8056 SvPVX(dstr) = Nullch;
8057 AvALLOC((AV*)dstr) = (SV**)NULL;
8061 SvANY(dstr) = new_XPVHV();
8062 SvCUR(dstr) = SvCUR(sstr);
8063 SvLEN(dstr) = SvLEN(sstr);
8064 SvIVX(dstr) = SvIVX(sstr);
8065 SvNVX(dstr) = SvNVX(sstr);
8066 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8067 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8068 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
8069 if (HvARRAY((HV*)sstr)) {
8071 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
8072 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
8073 Newz(0, dxhv->xhv_array,
8074 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
8075 while (i <= sxhv->xhv_max) {
8076 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
8077 !!HvSHAREKEYS(sstr));
8080 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
8083 SvPVX(dstr) = Nullch;
8084 HvEITER((HV*)dstr) = (HE*)NULL;
8086 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
8087 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
8090 SvANY(dstr) = new_XPVFM();
8091 FmLINES(dstr) = FmLINES(sstr);
8095 SvANY(dstr) = new_XPVCV();
8097 SvCUR(dstr) = SvCUR(sstr);
8098 SvLEN(dstr) = SvLEN(sstr);
8099 SvIVX(dstr) = SvIVX(sstr);
8100 SvNVX(dstr) = SvNVX(sstr);
8101 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
8102 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
8103 if (SvPVX(sstr) && SvLEN(sstr))
8104 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
8106 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
8107 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
8108 CvSTART(dstr) = CvSTART(sstr);
8109 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
8110 CvXSUB(dstr) = CvXSUB(sstr);
8111 CvXSUBANY(dstr) = CvXSUBANY(sstr);
8112 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
8113 CvDEPTH(dstr) = CvDEPTH(sstr);
8114 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
8115 /* XXX padlists are real, but pretend to be not */
8116 AvREAL_on(CvPADLIST(sstr));
8117 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
8118 AvREAL_off(CvPADLIST(sstr));
8119 AvREAL_off(CvPADLIST(dstr));
8122 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
8123 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
8124 CvFLAGS(dstr) = CvFLAGS(sstr);
8127 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
8131 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
8138 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
8143 return (PERL_CONTEXT*)NULL;
8145 /* look for it in the table first */
8146 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
8150 /* create anew and remember what it is */
8151 Newz(56, ncxs, max + 1, PERL_CONTEXT);
8152 ptr_table_store(PL_ptr_table, cxs, ncxs);
8155 PERL_CONTEXT *cx = &cxs[ix];
8156 PERL_CONTEXT *ncx = &ncxs[ix];
8157 ncx->cx_type = cx->cx_type;
8158 if (CxTYPE(cx) == CXt_SUBST) {
8159 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
8162 ncx->blk_oldsp = cx->blk_oldsp;
8163 ncx->blk_oldcop = cx->blk_oldcop;
8164 ncx->blk_oldretsp = cx->blk_oldretsp;
8165 ncx->blk_oldmarksp = cx->blk_oldmarksp;
8166 ncx->blk_oldscopesp = cx->blk_oldscopesp;
8167 ncx->blk_oldpm = cx->blk_oldpm;
8168 ncx->blk_gimme = cx->blk_gimme;
8169 switch (CxTYPE(cx)) {
8171 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
8172 ? cv_dup_inc(cx->blk_sub.cv)
8173 : cv_dup(cx->blk_sub.cv));
8174 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
8175 ? av_dup_inc(cx->blk_sub.argarray)
8177 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
8178 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
8179 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
8180 ncx->blk_sub.lval = cx->blk_sub.lval;
8183 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
8184 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
8185 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
8186 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
8187 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
8190 ncx->blk_loop.label = cx->blk_loop.label;
8191 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
8192 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
8193 ncx->blk_loop.next_op = cx->blk_loop.next_op;
8194 ncx->blk_loop.last_op = cx->blk_loop.last_op;
8195 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
8196 ? cx->blk_loop.iterdata
8197 : gv_dup((GV*)cx->blk_loop.iterdata));
8198 ncx->blk_loop.oldcurpad
8199 = (SV**)ptr_table_fetch(PL_ptr_table,
8200 cx->blk_loop.oldcurpad);
8201 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
8202 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
8203 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
8204 ncx->blk_loop.iterix = cx->blk_loop.iterix;
8205 ncx->blk_loop.itermax = cx->blk_loop.itermax;
8208 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
8209 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
8210 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
8211 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
8224 Perl_si_dup(pTHX_ PERL_SI *si)
8229 return (PERL_SI*)NULL;
8231 /* look for it in the table first */
8232 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
8236 /* create anew and remember what it is */
8237 Newz(56, nsi, 1, PERL_SI);
8238 ptr_table_store(PL_ptr_table, si, nsi);
8240 nsi->si_stack = av_dup_inc(si->si_stack);
8241 nsi->si_cxix = si->si_cxix;
8242 nsi->si_cxmax = si->si_cxmax;
8243 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
8244 nsi->si_type = si->si_type;
8245 nsi->si_prev = si_dup(si->si_prev);
8246 nsi->si_next = si_dup(si->si_next);
8247 nsi->si_markoff = si->si_markoff;
8252 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
8253 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
8254 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
8255 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
8256 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
8257 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
8258 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
8259 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
8260 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
8261 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
8262 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
8263 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
8266 #define pv_dup_inc(p) SAVEPV(p)
8267 #define pv_dup(p) SAVEPV(p)
8268 #define svp_dup_inc(p,pp) any_dup(p,pp)
8271 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
8278 /* look for it in the table first */
8279 ret = ptr_table_fetch(PL_ptr_table, v);
8283 /* see if it is part of the interpreter structure */
8284 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
8285 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
8293 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
8295 ANY *ss = proto_perl->Tsavestack;
8296 I32 ix = proto_perl->Tsavestack_ix;
8297 I32 max = proto_perl->Tsavestack_max;
8310 void (*dptr) (void*);
8311 void (*dxptr) (pTHXo_ void*);
8314 Newz(54, nss, max, ANY);
8320 case SAVEt_ITEM: /* normal string */
8321 sv = (SV*)POPPTR(ss,ix);
8322 TOPPTR(nss,ix) = sv_dup_inc(sv);
8323 sv = (SV*)POPPTR(ss,ix);
8324 TOPPTR(nss,ix) = sv_dup_inc(sv);
8326 case SAVEt_SV: /* scalar reference */
8327 sv = (SV*)POPPTR(ss,ix);
8328 TOPPTR(nss,ix) = sv_dup_inc(sv);
8329 gv = (GV*)POPPTR(ss,ix);
8330 TOPPTR(nss,ix) = gv_dup_inc(gv);
8332 case SAVEt_GENERIC_PVREF: /* generic char* */
8333 c = (char*)POPPTR(ss,ix);
8334 TOPPTR(nss,ix) = pv_dup(c);
8335 ptr = POPPTR(ss,ix);
8336 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8338 case SAVEt_GENERIC_SVREF: /* generic sv */
8339 case SAVEt_SVREF: /* scalar reference */
8340 sv = (SV*)POPPTR(ss,ix);
8341 TOPPTR(nss,ix) = sv_dup_inc(sv);
8342 ptr = POPPTR(ss,ix);
8343 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
8345 case SAVEt_AV: /* array reference */
8346 av = (AV*)POPPTR(ss,ix);
8347 TOPPTR(nss,ix) = av_dup_inc(av);
8348 gv = (GV*)POPPTR(ss,ix);
8349 TOPPTR(nss,ix) = gv_dup(gv);
8351 case SAVEt_HV: /* hash reference */
8352 hv = (HV*)POPPTR(ss,ix);
8353 TOPPTR(nss,ix) = hv_dup_inc(hv);
8354 gv = (GV*)POPPTR(ss,ix);
8355 TOPPTR(nss,ix) = gv_dup(gv);
8357 case SAVEt_INT: /* int reference */
8358 ptr = POPPTR(ss,ix);
8359 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8360 intval = (int)POPINT(ss,ix);
8361 TOPINT(nss,ix) = intval;
8363 case SAVEt_LONG: /* long reference */
8364 ptr = POPPTR(ss,ix);
8365 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8366 longval = (long)POPLONG(ss,ix);
8367 TOPLONG(nss,ix) = longval;
8369 case SAVEt_I32: /* I32 reference */
8370 case SAVEt_I16: /* I16 reference */
8371 case SAVEt_I8: /* I8 reference */
8372 ptr = POPPTR(ss,ix);
8373 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8377 case SAVEt_IV: /* IV reference */
8378 ptr = POPPTR(ss,ix);
8379 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8383 case SAVEt_SPTR: /* SV* reference */
8384 ptr = POPPTR(ss,ix);
8385 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8386 sv = (SV*)POPPTR(ss,ix);
8387 TOPPTR(nss,ix) = sv_dup(sv);
8389 case SAVEt_VPTR: /* random* reference */
8390 ptr = POPPTR(ss,ix);
8391 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8392 ptr = POPPTR(ss,ix);
8393 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8395 case SAVEt_PPTR: /* char* reference */
8396 ptr = POPPTR(ss,ix);
8397 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8398 c = (char*)POPPTR(ss,ix);
8399 TOPPTR(nss,ix) = pv_dup(c);
8401 case SAVEt_HPTR: /* HV* reference */
8402 ptr = POPPTR(ss,ix);
8403 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8404 hv = (HV*)POPPTR(ss,ix);
8405 TOPPTR(nss,ix) = hv_dup(hv);
8407 case SAVEt_APTR: /* AV* reference */
8408 ptr = POPPTR(ss,ix);
8409 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8410 av = (AV*)POPPTR(ss,ix);
8411 TOPPTR(nss,ix) = av_dup(av);
8414 gv = (GV*)POPPTR(ss,ix);
8415 TOPPTR(nss,ix) = gv_dup(gv);
8417 case SAVEt_GP: /* scalar reference */
8418 gp = (GP*)POPPTR(ss,ix);
8419 TOPPTR(nss,ix) = gp = gp_dup(gp);
8420 (void)GpREFCNT_inc(gp);
8421 gv = (GV*)POPPTR(ss,ix);
8422 TOPPTR(nss,ix) = gv_dup_inc(c);
8423 c = (char*)POPPTR(ss,ix);
8424 TOPPTR(nss,ix) = pv_dup(c);
8431 sv = (SV*)POPPTR(ss,ix);
8432 TOPPTR(nss,ix) = sv_dup_inc(sv);
8435 ptr = POPPTR(ss,ix);
8436 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
8437 /* these are assumed to be refcounted properly */
8438 switch (((OP*)ptr)->op_type) {
8445 TOPPTR(nss,ix) = ptr;
8450 TOPPTR(nss,ix) = Nullop;
8455 TOPPTR(nss,ix) = Nullop;
8458 c = (char*)POPPTR(ss,ix);
8459 TOPPTR(nss,ix) = pv_dup_inc(c);
8462 longval = POPLONG(ss,ix);
8463 TOPLONG(nss,ix) = longval;
8466 hv = (HV*)POPPTR(ss,ix);
8467 TOPPTR(nss,ix) = hv_dup_inc(hv);
8468 c = (char*)POPPTR(ss,ix);
8469 TOPPTR(nss,ix) = pv_dup_inc(c);
8473 case SAVEt_DESTRUCTOR:
8474 ptr = POPPTR(ss,ix);
8475 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
8476 dptr = POPDPTR(ss,ix);
8477 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
8479 case SAVEt_DESTRUCTOR_X:
8480 ptr = POPPTR(ss,ix);
8481 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
8482 dxptr = POPDXPTR(ss,ix);
8483 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
8485 case SAVEt_REGCONTEXT:
8491 case SAVEt_STACK_POS: /* Position on Perl stack */
8495 case SAVEt_AELEM: /* array element */
8496 sv = (SV*)POPPTR(ss,ix);
8497 TOPPTR(nss,ix) = sv_dup_inc(sv);
8500 av = (AV*)POPPTR(ss,ix);
8501 TOPPTR(nss,ix) = av_dup_inc(av);
8503 case SAVEt_HELEM: /* hash element */
8504 sv = (SV*)POPPTR(ss,ix);
8505 TOPPTR(nss,ix) = sv_dup_inc(sv);
8506 sv = (SV*)POPPTR(ss,ix);
8507 TOPPTR(nss,ix) = sv_dup_inc(sv);
8508 hv = (HV*)POPPTR(ss,ix);
8509 TOPPTR(nss,ix) = hv_dup_inc(hv);
8512 ptr = POPPTR(ss,ix);
8513 TOPPTR(nss,ix) = ptr;
8520 av = (AV*)POPPTR(ss,ix);
8521 TOPPTR(nss,ix) = av_dup(av);
8524 longval = (long)POPLONG(ss,ix);
8525 TOPLONG(nss,ix) = longval;
8526 ptr = POPPTR(ss,ix);
8527 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8528 sv = (SV*)POPPTR(ss,ix);
8529 TOPPTR(nss,ix) = sv_dup(sv);
8532 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
8544 perl_clone(PerlInterpreter *proto_perl, UV flags)
8547 CPerlObj *pPerl = (CPerlObj*)proto_perl;
8550 #ifdef PERL_IMPLICIT_SYS
8551 return perl_clone_using(proto_perl, flags,
8553 proto_perl->IMemShared,
8554 proto_perl->IMemParse,
8564 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
8565 struct IPerlMem* ipM, struct IPerlMem* ipMS,
8566 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
8567 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
8568 struct IPerlDir* ipD, struct IPerlSock* ipS,
8569 struct IPerlProc* ipP)
8571 /* XXX many of the string copies here can be optimized if they're
8572 * constants; they need to be allocated as common memory and just
8573 * their pointers copied. */
8577 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
8579 PERL_SET_THX(pPerl);
8580 # else /* !PERL_OBJECT */
8581 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
8582 PERL_SET_THX(my_perl);
8585 memset(my_perl, 0xab, sizeof(PerlInterpreter));
8591 # else /* !DEBUGGING */
8592 Zero(my_perl, 1, PerlInterpreter);
8593 # endif /* DEBUGGING */
8597 PL_MemShared = ipMS;
8605 # endif /* PERL_OBJECT */
8606 #else /* !PERL_IMPLICIT_SYS */
8608 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
8609 PERL_SET_THX(my_perl);
8612 memset(my_perl, 0xab, sizeof(PerlInterpreter));
8618 # else /* !DEBUGGING */
8619 Zero(my_perl, 1, PerlInterpreter);
8620 # endif /* DEBUGGING */
8621 #endif /* PERL_IMPLICIT_SYS */
8624 PL_xiv_arenaroot = NULL;
8626 PL_xnv_arenaroot = NULL;
8628 PL_xrv_arenaroot = NULL;
8630 PL_xpv_arenaroot = NULL;
8632 PL_xpviv_arenaroot = NULL;
8633 PL_xpviv_root = NULL;
8634 PL_xpvnv_arenaroot = NULL;
8635 PL_xpvnv_root = NULL;
8636 PL_xpvcv_arenaroot = NULL;
8637 PL_xpvcv_root = NULL;
8638 PL_xpvav_arenaroot = NULL;
8639 PL_xpvav_root = NULL;
8640 PL_xpvhv_arenaroot = NULL;
8641 PL_xpvhv_root = NULL;
8642 PL_xpvmg_arenaroot = NULL;
8643 PL_xpvmg_root = NULL;
8644 PL_xpvlv_arenaroot = NULL;
8645 PL_xpvlv_root = NULL;
8646 PL_xpvbm_arenaroot = NULL;
8647 PL_xpvbm_root = NULL;
8648 PL_he_arenaroot = NULL;
8650 PL_nice_chunk = NULL;
8651 PL_nice_chunk_size = 0;
8654 PL_sv_root = Nullsv;
8655 PL_sv_arenaroot = Nullsv;
8657 PL_debug = proto_perl->Idebug;
8659 /* create SV map for pointer relocation */
8660 PL_ptr_table = ptr_table_new();
8662 /* initialize these special pointers as early as possible */
8663 SvANY(&PL_sv_undef) = NULL;
8664 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
8665 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
8666 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
8669 SvUPGRADE(&PL_sv_no, SVt_PVNV);
8671 SvANY(&PL_sv_no) = new_XPVNV();
8673 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
8674 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
8675 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
8676 SvCUR(&PL_sv_no) = 0;
8677 SvLEN(&PL_sv_no) = 1;
8678 SvNVX(&PL_sv_no) = 0;
8679 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
8682 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
8684 SvANY(&PL_sv_yes) = new_XPVNV();
8686 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
8687 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
8688 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
8689 SvCUR(&PL_sv_yes) = 1;
8690 SvLEN(&PL_sv_yes) = 2;
8691 SvNVX(&PL_sv_yes) = 1;
8692 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
8694 /* create shared string table */
8695 PL_strtab = newHV();
8696 HvSHAREKEYS_off(PL_strtab);
8697 hv_ksplit(PL_strtab, 512);
8698 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
8700 PL_compiling = proto_perl->Icompiling;
8701 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
8702 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
8703 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
8704 if (!specialWARN(PL_compiling.cop_warnings))
8705 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
8706 if (!specialCopIO(PL_compiling.cop_io))
8707 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
8708 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
8710 /* pseudo environmental stuff */
8711 PL_origargc = proto_perl->Iorigargc;
8713 New(0, PL_origargv, i+1, char*);
8714 PL_origargv[i] = '\0';
8716 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
8718 PL_envgv = gv_dup(proto_perl->Ienvgv);
8719 PL_incgv = gv_dup(proto_perl->Iincgv);
8720 PL_hintgv = gv_dup(proto_perl->Ihintgv);
8721 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
8722 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
8723 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
8726 PL_minus_c = proto_perl->Iminus_c;
8727 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
8728 PL_localpatches = proto_perl->Ilocalpatches;
8729 PL_splitstr = proto_perl->Isplitstr;
8730 PL_preprocess = proto_perl->Ipreprocess;
8731 PL_minus_n = proto_perl->Iminus_n;
8732 PL_minus_p = proto_perl->Iminus_p;
8733 PL_minus_l = proto_perl->Iminus_l;
8734 PL_minus_a = proto_perl->Iminus_a;
8735 PL_minus_F = proto_perl->Iminus_F;
8736 PL_doswitches = proto_perl->Idoswitches;
8737 PL_dowarn = proto_perl->Idowarn;
8738 PL_doextract = proto_perl->Idoextract;
8739 PL_sawampersand = proto_perl->Isawampersand;
8740 PL_unsafe = proto_perl->Iunsafe;
8741 PL_inplace = SAVEPV(proto_perl->Iinplace);
8742 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
8743 PL_perldb = proto_perl->Iperldb;
8744 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
8746 /* magical thingies */
8747 /* XXX time(&PL_basetime) when asked for? */
8748 PL_basetime = proto_perl->Ibasetime;
8749 PL_formfeed = sv_dup(proto_perl->Iformfeed);
8751 PL_maxsysfd = proto_perl->Imaxsysfd;
8752 PL_multiline = proto_perl->Imultiline;
8753 PL_statusvalue = proto_perl->Istatusvalue;
8755 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
8758 /* shortcuts to various I/O objects */
8759 PL_stdingv = gv_dup(proto_perl->Istdingv);
8760 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
8761 PL_defgv = gv_dup(proto_perl->Idefgv);
8762 PL_argvgv = gv_dup(proto_perl->Iargvgv);
8763 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
8764 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
8766 /* shortcuts to regexp stuff */
8767 PL_replgv = gv_dup(proto_perl->Ireplgv);
8769 /* shortcuts to misc objects */
8770 PL_errgv = gv_dup(proto_perl->Ierrgv);
8772 /* shortcuts to debugging objects */
8773 PL_DBgv = gv_dup(proto_perl->IDBgv);
8774 PL_DBline = gv_dup(proto_perl->IDBline);
8775 PL_DBsub = gv_dup(proto_perl->IDBsub);
8776 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
8777 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
8778 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
8779 PL_lineary = av_dup(proto_perl->Ilineary);
8780 PL_dbargs = av_dup(proto_perl->Idbargs);
8783 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
8784 PL_curstash = hv_dup(proto_perl->Tcurstash);
8785 PL_debstash = hv_dup(proto_perl->Idebstash);
8786 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
8787 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
8789 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
8790 PL_endav = av_dup_inc(proto_perl->Iendav);
8791 PL_checkav = av_dup_inc(proto_perl->Icheckav);
8792 PL_initav = av_dup_inc(proto_perl->Iinitav);
8794 PL_sub_generation = proto_perl->Isub_generation;
8796 /* funky return mechanisms */
8797 PL_forkprocess = proto_perl->Iforkprocess;
8799 /* subprocess state */
8800 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
8802 /* internal state */
8803 PL_tainting = proto_perl->Itainting;
8804 PL_maxo = proto_perl->Imaxo;
8805 if (proto_perl->Iop_mask)
8806 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
8808 PL_op_mask = Nullch;
8810 /* current interpreter roots */
8811 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
8812 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
8813 PL_main_start = proto_perl->Imain_start;
8814 PL_eval_root = proto_perl->Ieval_root;
8815 PL_eval_start = proto_perl->Ieval_start;
8817 /* runtime control stuff */
8818 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
8819 PL_copline = proto_perl->Icopline;
8821 PL_filemode = proto_perl->Ifilemode;
8822 PL_lastfd = proto_perl->Ilastfd;
8823 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
8826 PL_gensym = proto_perl->Igensym;
8827 PL_preambled = proto_perl->Ipreambled;
8828 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
8829 PL_laststatval = proto_perl->Ilaststatval;
8830 PL_laststype = proto_perl->Ilaststype;
8831 PL_mess_sv = Nullsv;
8833 PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv);
8834 PL_ofmt = SAVEPV(proto_perl->Iofmt);
8836 /* interpreter atexit processing */
8837 PL_exitlistlen = proto_perl->Iexitlistlen;
8838 if (PL_exitlistlen) {
8839 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8840 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8843 PL_exitlist = (PerlExitListEntry*)NULL;
8844 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
8846 PL_profiledata = NULL;
8847 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
8848 /* PL_rsfp_filters entries have fake IoDIRP() */
8849 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
8851 PL_compcv = cv_dup(proto_perl->Icompcv);
8852 PL_comppad = av_dup(proto_perl->Icomppad);
8853 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
8854 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
8855 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8856 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8857 proto_perl->Tcurpad);
8859 #ifdef HAVE_INTERP_INTERN
8860 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8863 /* more statics moved here */
8864 PL_generation = proto_perl->Igeneration;
8865 PL_DBcv = cv_dup(proto_perl->IDBcv);
8867 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8868 PL_in_clean_all = proto_perl->Iin_clean_all;
8870 PL_uid = proto_perl->Iuid;
8871 PL_euid = proto_perl->Ieuid;
8872 PL_gid = proto_perl->Igid;
8873 PL_egid = proto_perl->Iegid;
8874 PL_nomemok = proto_perl->Inomemok;
8875 PL_an = proto_perl->Ian;
8876 PL_cop_seqmax = proto_perl->Icop_seqmax;
8877 PL_op_seqmax = proto_perl->Iop_seqmax;
8878 PL_evalseq = proto_perl->Ievalseq;
8879 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8880 PL_origalen = proto_perl->Iorigalen;
8881 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8882 PL_osname = SAVEPV(proto_perl->Iosname);
8883 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8884 PL_sighandlerp = proto_perl->Isighandlerp;
8887 PL_runops = proto_perl->Irunops;
8889 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8892 PL_cshlen = proto_perl->Icshlen;
8893 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8896 PL_lex_state = proto_perl->Ilex_state;
8897 PL_lex_defer = proto_perl->Ilex_defer;
8898 PL_lex_expect = proto_perl->Ilex_expect;
8899 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8900 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8901 PL_lex_starts = proto_perl->Ilex_starts;
8902 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8903 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8904 PL_lex_op = proto_perl->Ilex_op;
8905 PL_lex_inpat = proto_perl->Ilex_inpat;
8906 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8907 PL_lex_brackets = proto_perl->Ilex_brackets;
8908 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8909 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8910 PL_lex_casemods = proto_perl->Ilex_casemods;
8911 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8912 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8914 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8915 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8916 PL_nexttoke = proto_perl->Inexttoke;
8918 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8919 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8920 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8921 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8922 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8923 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8924 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8925 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8926 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8927 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8928 PL_pending_ident = proto_perl->Ipending_ident;
8929 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8931 PL_expect = proto_perl->Iexpect;
8933 PL_multi_start = proto_perl->Imulti_start;
8934 PL_multi_end = proto_perl->Imulti_end;
8935 PL_multi_open = proto_perl->Imulti_open;
8936 PL_multi_close = proto_perl->Imulti_close;
8938 PL_error_count = proto_perl->Ierror_count;
8939 PL_subline = proto_perl->Isubline;
8940 PL_subname = sv_dup_inc(proto_perl->Isubname);
8942 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8943 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8944 PL_padix = proto_perl->Ipadix;
8945 PL_padix_floor = proto_perl->Ipadix_floor;
8946 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8948 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8949 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8950 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8951 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8952 PL_last_lop_op = proto_perl->Ilast_lop_op;
8953 PL_in_my = proto_perl->Iin_my;
8954 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8956 PL_cryptseen = proto_perl->Icryptseen;
8959 PL_hints = proto_perl->Ihints;
8961 PL_amagic_generation = proto_perl->Iamagic_generation;
8963 #ifdef USE_LOCALE_COLLATE
8964 PL_collation_ix = proto_perl->Icollation_ix;
8965 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8966 PL_collation_standard = proto_perl->Icollation_standard;
8967 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8968 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8969 #endif /* USE_LOCALE_COLLATE */
8971 #ifdef USE_LOCALE_NUMERIC
8972 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8973 PL_numeric_standard = proto_perl->Inumeric_standard;
8974 PL_numeric_local = proto_perl->Inumeric_local;
8975 PL_numeric_radix = sv_dup_inc(proto_perl->Inumeric_radix);
8976 #endif /* !USE_LOCALE_NUMERIC */
8978 /* utf8 character classes */
8979 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8980 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8981 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8982 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8983 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8984 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8985 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8986 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8987 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8988 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8989 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8990 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8991 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8992 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8993 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8994 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8995 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8998 PL_last_swash_hv = Nullhv; /* reinits on demand */
8999 PL_last_swash_klen = 0;
9000 PL_last_swash_key[0]= '\0';
9001 PL_last_swash_tmps = (U8*)NULL;
9002 PL_last_swash_slen = 0;
9004 /* perly.c globals */
9005 PL_yydebug = proto_perl->Iyydebug;
9006 PL_yynerrs = proto_perl->Iyynerrs;
9007 PL_yyerrflag = proto_perl->Iyyerrflag;
9008 PL_yychar = proto_perl->Iyychar;
9009 PL_yyval = proto_perl->Iyyval;
9010 PL_yylval = proto_perl->Iyylval;
9012 PL_glob_index = proto_perl->Iglob_index;
9013 PL_srand_called = proto_perl->Isrand_called;
9014 PL_uudmap['M'] = 0; /* reinits on demand */
9015 PL_bitcount = Nullch; /* reinits on demand */
9017 if (proto_perl->Ipsig_pend) {
9018 Newz(0, PL_psig_pend, SIG_SIZE, int);
9021 PL_psig_pend = (int*)NULL;
9024 if (proto_perl->Ipsig_ptr) {
9025 Newz(0, PL_psig_ptr, SIG_SIZE, SV*);
9026 Newz(0, PL_psig_name, SIG_SIZE, SV*);
9027 for (i = 1; i < SIG_SIZE; i++) {
9028 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
9029 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
9033 PL_psig_ptr = (SV**)NULL;
9034 PL_psig_name = (SV**)NULL;
9037 /* thrdvar.h stuff */
9039 if (flags & CLONEf_COPY_STACKS) {
9040 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
9041 PL_tmps_ix = proto_perl->Ttmps_ix;
9042 PL_tmps_max = proto_perl->Ttmps_max;
9043 PL_tmps_floor = proto_perl->Ttmps_floor;
9044 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
9046 while (i <= PL_tmps_ix) {
9047 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
9051 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
9052 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
9053 Newz(54, PL_markstack, i, I32);
9054 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
9055 - proto_perl->Tmarkstack);
9056 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
9057 - proto_perl->Tmarkstack);
9058 Copy(proto_perl->Tmarkstack, PL_markstack,
9059 PL_markstack_ptr - PL_markstack + 1, I32);
9061 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
9062 * NOTE: unlike the others! */
9063 PL_scopestack_ix = proto_perl->Tscopestack_ix;
9064 PL_scopestack_max = proto_perl->Tscopestack_max;
9065 Newz(54, PL_scopestack, PL_scopestack_max, I32);
9066 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
9068 /* next push_return() sets PL_retstack[PL_retstack_ix]
9069 * NOTE: unlike the others! */
9070 PL_retstack_ix = proto_perl->Tretstack_ix;
9071 PL_retstack_max = proto_perl->Tretstack_max;
9072 Newz(54, PL_retstack, PL_retstack_max, OP*);
9073 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
9075 /* NOTE: si_dup() looks at PL_markstack */
9076 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
9078 /* PL_curstack = PL_curstackinfo->si_stack; */
9079 PL_curstack = av_dup(proto_perl->Tcurstack);
9080 PL_mainstack = av_dup(proto_perl->Tmainstack);
9082 /* next PUSHs() etc. set *(PL_stack_sp+1) */
9083 PL_stack_base = AvARRAY(PL_curstack);
9084 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
9085 - proto_perl->Tstack_base);
9086 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
9088 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
9089 * NOTE: unlike the others! */
9090 PL_savestack_ix = proto_perl->Tsavestack_ix;
9091 PL_savestack_max = proto_perl->Tsavestack_max;
9092 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
9093 PL_savestack = ss_dup(proto_perl);
9097 ENTER; /* perl_destruct() wants to LEAVE; */
9100 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
9101 PL_top_env = &PL_start_env;
9103 PL_op = proto_perl->Top;
9106 PL_Xpv = (XPV*)NULL;
9107 PL_na = proto_perl->Tna;
9109 PL_statbuf = proto_perl->Tstatbuf;
9110 PL_statcache = proto_perl->Tstatcache;
9111 PL_statgv = gv_dup(proto_perl->Tstatgv);
9112 PL_statname = sv_dup_inc(proto_perl->Tstatname);
9114 PL_timesbuf = proto_perl->Ttimesbuf;
9117 PL_tainted = proto_perl->Ttainted;
9118 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
9119 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
9120 PL_rs = sv_dup_inc(proto_perl->Trs);
9121 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
9122 PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv);
9123 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
9124 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
9125 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
9126 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
9127 PL_formtarget = sv_dup(proto_perl->Tformtarget);
9129 PL_restartop = proto_perl->Trestartop;
9130 PL_in_eval = proto_perl->Tin_eval;
9131 PL_delaymagic = proto_perl->Tdelaymagic;
9132 PL_dirty = proto_perl->Tdirty;
9133 PL_localizing = proto_perl->Tlocalizing;
9135 #ifdef PERL_FLEXIBLE_EXCEPTIONS
9136 PL_protect = proto_perl->Tprotect;
9138 PL_errors = sv_dup_inc(proto_perl->Terrors);
9139 PL_av_fetch_sv = Nullsv;
9140 PL_hv_fetch_sv = Nullsv;
9141 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
9142 PL_modcount = proto_perl->Tmodcount;
9143 PL_lastgotoprobe = Nullop;
9144 PL_dumpindent = proto_perl->Tdumpindent;
9146 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
9147 PL_sortstash = hv_dup(proto_perl->Tsortstash);
9148 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
9149 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
9150 PL_sortcxix = proto_perl->Tsortcxix;
9151 PL_efloatbuf = Nullch; /* reinits on demand */
9152 PL_efloatsize = 0; /* reinits on demand */
9156 PL_screamfirst = NULL;
9157 PL_screamnext = NULL;
9158 PL_maxscream = -1; /* reinits on demand */
9159 PL_lastscream = Nullsv;
9161 PL_watchaddr = NULL;
9162 PL_watchok = Nullch;
9164 PL_regdummy = proto_perl->Tregdummy;
9165 PL_regcomp_parse = Nullch;
9166 PL_regxend = Nullch;
9167 PL_regcode = (regnode*)NULL;
9170 PL_regprecomp = Nullch;
9175 PL_seen_zerolen = 0;
9177 PL_regcomp_rx = (regexp*)NULL;
9179 PL_colorset = 0; /* reinits PL_colors[] */
9180 /*PL_colors[6] = {0,0,0,0,0,0};*/
9181 PL_reg_whilem_seen = 0;
9182 PL_reginput = Nullch;
9185 PL_regstartp = (I32*)NULL;
9186 PL_regendp = (I32*)NULL;
9187 PL_reglastparen = (U32*)NULL;
9188 PL_regtill = Nullch;
9190 PL_reg_start_tmp = (char**)NULL;
9191 PL_reg_start_tmpl = 0;
9192 PL_regdata = (struct reg_data*)NULL;
9195 PL_reg_eval_set = 0;
9197 PL_regprogram = (regnode*)NULL;
9199 PL_regcc = (CURCUR*)NULL;
9200 PL_reg_call_cc = (struct re_cc_state*)NULL;
9201 PL_reg_re = (regexp*)NULL;
9202 PL_reg_ganch = Nullch;
9204 PL_reg_magic = (MAGIC*)NULL;
9206 PL_reg_oldcurpm = (PMOP*)NULL;
9207 PL_reg_curpm = (PMOP*)NULL;
9208 PL_reg_oldsaved = Nullch;
9209 PL_reg_oldsavedlen = 0;
9211 PL_reg_leftiter = 0;
9212 PL_reg_poscache = Nullch;
9213 PL_reg_poscache_size= 0;
9215 /* RE engine - function pointers */
9216 PL_regcompp = proto_perl->Tregcompp;
9217 PL_regexecp = proto_perl->Tregexecp;
9218 PL_regint_start = proto_perl->Tregint_start;
9219 PL_regint_string = proto_perl->Tregint_string;
9220 PL_regfree = proto_perl->Tregfree;
9222 PL_reginterp_cnt = 0;
9223 PL_reg_starttry = 0;
9225 if (!(flags & CLONEf_KEEP_PTR_TABLE)) {
9226 ptr_table_free(PL_ptr_table);
9227 PL_ptr_table = NULL;
9231 return (PerlInterpreter*)pPerl;
9237 #else /* !USE_ITHREADS */
9243 #endif /* USE_ITHREADS */
9246 do_report_used(pTHXo_ SV *sv)
9248 if (SvTYPE(sv) != SVTYPEMASK) {
9249 PerlIO_printf(Perl_debug_log, "****\n");
9255 do_clean_objs(pTHXo_ SV *sv)
9259 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
9260 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
9261 if (SvWEAKREF(sv)) {
9272 /* XXX Might want to check arrays, etc. */
9275 #ifndef DISABLE_DESTRUCTOR_KLUDGE
9277 do_clean_named_objs(pTHXo_ SV *sv)
9279 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
9280 if ( SvOBJECT(GvSV(sv)) ||
9281 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
9282 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
9283 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
9284 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
9286 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
9294 do_clean_all(pTHXo_ SV *sv)
9296 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
9297 SvFLAGS(sv) |= SVf_BREAK;