3 * Copyright (c) 1991-2000, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
19 #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)
21 static void do_report_used(pTHXo_ SV *sv);
22 static void do_clean_objs(pTHXo_ SV *sv);
23 #ifndef DISABLE_DESTRUCTOR_KLUDGE
24 static void do_clean_named_objs(pTHXo_ SV *sv);
26 static void do_clean_all(pTHXo_ SV *sv);
29 * "A time to plant, and a time to uproot what was planted..."
34 SvANY(p) = (void *)PL_sv_root; \
35 SvFLAGS(p) = SVTYPEMASK; \
40 /* sv_mutex must be held while calling uproot_SV() */
41 #define uproot_SV(p) \
44 PL_sv_root = (SV*)SvANY(p); \
66 if (PL_debug & 32768) \
76 if (PL_debug & 32768) {
81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
83 svend = &sva[SvREFCNT(sva)];
84 if (p >= sv && p < svend)
88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
90 "Attempt to free non-arena SV: 0x%"UVxf,
98 #else /* ! DEBUGGING */
100 #define del_SV(p) plant_SV(p)
102 #endif /* DEBUGGING */
105 Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
110 Zero(ptr, size, char);
112 /* The first SV in an arena isn't an SV. */
113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
120 svend = &sva[SvREFCNT(sva) - 1];
123 SvANY(sv) = (void *)(SV*)(sv + 1);
124 SvFLAGS(sv) = SVTYPEMASK;
128 SvFLAGS(sv) = SVTYPEMASK;
131 /* sv_mutex must be held while calling more_sv() */
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
151 S_visit(pTHX_ SVFUNC_t f)
157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
158 svend = &sva[SvREFCNT(sva)];
159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
167 Perl_sv_report_used(pTHX)
169 visit(do_report_used);
173 Perl_sv_clean_objs(pTHX)
175 PL_in_clean_objs = TRUE;
176 visit(do_clean_objs);
177 #ifndef DISABLE_DESTRUCTOR_KLUDGE
178 /* some barnacles may yet remain, clinging to typeglobs */
179 visit(do_clean_named_objs);
181 PL_in_clean_objs = FALSE;
185 Perl_sv_clean_all(pTHX)
187 PL_in_clean_all = TRUE;
189 PL_in_clean_all = FALSE;
193 Perl_sv_free_arenas(pTHX)
197 XPV *arena, *arenanext;
199 /* Free arenas here, but be careful about fake ones. (We assume
200 contiguity of the fake ones with the corresponding real ones.) */
202 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
203 svanext = (SV*) SvANY(sva);
204 while (svanext && SvFAKE(svanext))
205 svanext = (SV*) SvANY(svanext);
208 Safefree((void *)sva);
211 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
212 arenanext = (XPV*)arena->xpv_pv;
215 PL_xiv_arenaroot = 0;
217 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
221 PL_xnv_arenaroot = 0;
223 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
227 PL_xrv_arenaroot = 0;
229 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
233 PL_xpv_arenaroot = 0;
235 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
239 PL_xpviv_arenaroot = 0;
241 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
245 PL_xpvnv_arenaroot = 0;
247 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
251 PL_xpvcv_arenaroot = 0;
253 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
257 PL_xpvav_arenaroot = 0;
259 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
263 PL_xpvhv_arenaroot = 0;
265 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
269 PL_xpvmg_arenaroot = 0;
271 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
275 PL_xpvlv_arenaroot = 0;
277 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
281 PL_xpvbm_arenaroot = 0;
283 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
290 Safefree(PL_nice_chunk);
291 PL_nice_chunk = Nullch;
292 PL_nice_chunk_size = 0;
298 Perl_report_uninit(pTHX)
301 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
302 " in ", PL_op_desc[PL_op->op_type]);
304 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
316 * See comment in more_xiv() -- RAM.
318 PL_xiv_root = *(IV**)xiv;
320 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
324 S_del_xiv(pTHX_ XPVIV *p)
326 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
328 *(IV**)xiv = PL_xiv_root;
339 New(705, ptr, 1008/sizeof(XPV), XPV);
340 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
341 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
344 xivend = &xiv[1008 / sizeof(IV) - 1];
345 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
347 while (xiv < xivend) {
348 *(IV**)xiv = (IV *)(xiv + 1);
362 PL_xnv_root = *(NV**)xnv;
364 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
368 S_del_xnv(pTHX_ XPVNV *p)
370 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
372 *(NV**)xnv = PL_xnv_root;
383 New(711, ptr, 1008/sizeof(XPV), XPV);
384 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
385 PL_xnv_arenaroot = ptr;
388 xnvend = &xnv[1008 / sizeof(NV) - 1];
389 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
391 while (xnv < xnvend) {
392 *(NV**)xnv = (NV*)(xnv + 1);
406 PL_xrv_root = (XRV*)xrv->xrv_rv;
412 S_del_xrv(pTHX_ XRV *p)
415 p->xrv_rv = (SV*)PL_xrv_root;
424 register XRV* xrvend;
426 New(712, ptr, 1008/sizeof(XPV), XPV);
427 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
428 PL_xrv_arenaroot = ptr;
431 xrvend = &xrv[1008 / sizeof(XRV) - 1];
432 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
434 while (xrv < xrvend) {
435 xrv->xrv_rv = (SV*)(xrv + 1);
449 PL_xpv_root = (XPV*)xpv->xpv_pv;
455 S_del_xpv(pTHX_ XPV *p)
458 p->xpv_pv = (char*)PL_xpv_root;
467 register XPV* xpvend;
468 New(713, xpv, 1008/sizeof(XPV), XPV);
469 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
470 PL_xpv_arenaroot = xpv;
472 xpvend = &xpv[1008 / sizeof(XPV) - 1];
474 while (xpv < xpvend) {
475 xpv->xpv_pv = (char*)(xpv + 1);
488 xpviv = PL_xpviv_root;
489 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
495 S_del_xpviv(pTHX_ XPVIV *p)
498 p->xpv_pv = (char*)PL_xpviv_root;
506 register XPVIV* xpviv;
507 register XPVIV* xpvivend;
508 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
509 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
510 PL_xpviv_arenaroot = xpviv;
512 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
513 PL_xpviv_root = ++xpviv;
514 while (xpviv < xpvivend) {
515 xpviv->xpv_pv = (char*)(xpviv + 1);
528 xpvnv = PL_xpvnv_root;
529 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
535 S_del_xpvnv(pTHX_ XPVNV *p)
538 p->xpv_pv = (char*)PL_xpvnv_root;
546 register XPVNV* xpvnv;
547 register XPVNV* xpvnvend;
548 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
549 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
550 PL_xpvnv_arenaroot = xpvnv;
552 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
553 PL_xpvnv_root = ++xpvnv;
554 while (xpvnv < xpvnvend) {
555 xpvnv->xpv_pv = (char*)(xpvnv + 1);
568 xpvcv = PL_xpvcv_root;
569 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
575 S_del_xpvcv(pTHX_ XPVCV *p)
578 p->xpv_pv = (char*)PL_xpvcv_root;
586 register XPVCV* xpvcv;
587 register XPVCV* xpvcvend;
588 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
589 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
590 PL_xpvcv_arenaroot = xpvcv;
592 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
593 PL_xpvcv_root = ++xpvcv;
594 while (xpvcv < xpvcvend) {
595 xpvcv->xpv_pv = (char*)(xpvcv + 1);
608 xpvav = PL_xpvav_root;
609 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
615 S_del_xpvav(pTHX_ XPVAV *p)
618 p->xav_array = (char*)PL_xpvav_root;
626 register XPVAV* xpvav;
627 register XPVAV* xpvavend;
628 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
629 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
630 PL_xpvav_arenaroot = xpvav;
632 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
633 PL_xpvav_root = ++xpvav;
634 while (xpvav < xpvavend) {
635 xpvav->xav_array = (char*)(xpvav + 1);
638 xpvav->xav_array = 0;
648 xpvhv = PL_xpvhv_root;
649 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
655 S_del_xpvhv(pTHX_ XPVHV *p)
658 p->xhv_array = (char*)PL_xpvhv_root;
666 register XPVHV* xpvhv;
667 register XPVHV* xpvhvend;
668 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
669 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
670 PL_xpvhv_arenaroot = xpvhv;
672 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
673 PL_xpvhv_root = ++xpvhv;
674 while (xpvhv < xpvhvend) {
675 xpvhv->xhv_array = (char*)(xpvhv + 1);
678 xpvhv->xhv_array = 0;
688 xpvmg = PL_xpvmg_root;
689 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
695 S_del_xpvmg(pTHX_ XPVMG *p)
698 p->xpv_pv = (char*)PL_xpvmg_root;
706 register XPVMG* xpvmg;
707 register XPVMG* xpvmgend;
708 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
709 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
710 PL_xpvmg_arenaroot = xpvmg;
712 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
713 PL_xpvmg_root = ++xpvmg;
714 while (xpvmg < xpvmgend) {
715 xpvmg->xpv_pv = (char*)(xpvmg + 1);
728 xpvlv = PL_xpvlv_root;
729 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
735 S_del_xpvlv(pTHX_ XPVLV *p)
738 p->xpv_pv = (char*)PL_xpvlv_root;
746 register XPVLV* xpvlv;
747 register XPVLV* xpvlvend;
748 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
749 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
750 PL_xpvlv_arenaroot = xpvlv;
752 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
753 PL_xpvlv_root = ++xpvlv;
754 while (xpvlv < xpvlvend) {
755 xpvlv->xpv_pv = (char*)(xpvlv + 1);
768 xpvbm = PL_xpvbm_root;
769 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
775 S_del_xpvbm(pTHX_ XPVBM *p)
778 p->xpv_pv = (char*)PL_xpvbm_root;
786 register XPVBM* xpvbm;
787 register XPVBM* xpvbmend;
788 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
789 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
790 PL_xpvbm_arenaroot = xpvbm;
792 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
793 PL_xpvbm_root = ++xpvbm;
794 while (xpvbm < xpvbmend) {
795 xpvbm->xpv_pv = (char*)(xpvbm + 1);
802 # define my_safemalloc(s) (void*)safexmalloc(717,s)
803 # define my_safefree(p) safexfree((char*)p)
805 # define my_safemalloc(s) (void*)safemalloc(s)
806 # define my_safefree(p) safefree((char*)p)
811 #define new_XIV() my_safemalloc(sizeof(XPVIV))
812 #define del_XIV(p) my_safefree(p)
814 #define new_XNV() my_safemalloc(sizeof(XPVNV))
815 #define del_XNV(p) my_safefree(p)
817 #define new_XRV() my_safemalloc(sizeof(XRV))
818 #define del_XRV(p) my_safefree(p)
820 #define new_XPV() my_safemalloc(sizeof(XPV))
821 #define del_XPV(p) my_safefree(p)
823 #define new_XPVIV() my_safemalloc(sizeof(XPVIV))
824 #define del_XPVIV(p) my_safefree(p)
826 #define new_XPVNV() my_safemalloc(sizeof(XPVNV))
827 #define del_XPVNV(p) my_safefree(p)
829 #define new_XPVCV() my_safemalloc(sizeof(XPVCV))
830 #define del_XPVCV(p) my_safefree(p)
832 #define new_XPVAV() my_safemalloc(sizeof(XPVAV))
833 #define del_XPVAV(p) my_safefree(p)
835 #define new_XPVHV() my_safemalloc(sizeof(XPVHV))
836 #define del_XPVHV(p) my_safefree(p)
838 #define new_XPVMG() my_safemalloc(sizeof(XPVMG))
839 #define del_XPVMG(p) my_safefree(p)
841 #define new_XPVLV() my_safemalloc(sizeof(XPVLV))
842 #define del_XPVLV(p) my_safefree(p)
844 #define new_XPVBM() my_safemalloc(sizeof(XPVBM))
845 #define del_XPVBM(p) my_safefree(p)
849 #define new_XIV() (void*)new_xiv()
850 #define del_XIV(p) del_xiv((XPVIV*) p)
852 #define new_XNV() (void*)new_xnv()
853 #define del_XNV(p) del_xnv((XPVNV*) p)
855 #define new_XRV() (void*)new_xrv()
856 #define del_XRV(p) del_xrv((XRV*) p)
858 #define new_XPV() (void*)new_xpv()
859 #define del_XPV(p) del_xpv((XPV *)p)
861 #define new_XPVIV() (void*)new_xpviv()
862 #define del_XPVIV(p) del_xpviv((XPVIV *)p)
864 #define new_XPVNV() (void*)new_xpvnv()
865 #define del_XPVNV(p) del_xpvnv((XPVNV *)p)
867 #define new_XPVCV() (void*)new_xpvcv()
868 #define del_XPVCV(p) del_xpvcv((XPVCV *)p)
870 #define new_XPVAV() (void*)new_xpvav()
871 #define del_XPVAV(p) del_xpvav((XPVAV *)p)
873 #define new_XPVHV() (void*)new_xpvhv()
874 #define del_XPVHV(p) del_xpvhv((XPVHV *)p)
876 #define new_XPVMG() (void*)new_xpvmg()
877 #define del_XPVMG(p) del_xpvmg((XPVMG *)p)
879 #define new_XPVLV() (void*)new_xpvlv()
880 #define del_XPVLV(p) del_xpvlv((XPVLV *)p)
882 #define new_XPVBM() (void*)new_xpvbm()
883 #define del_XPVBM(p) del_xpvbm((XPVBM *)p)
887 #define new_XPVGV() my_safemalloc(sizeof(XPVGV))
888 #define del_XPVGV(p) my_safefree(p)
890 #define new_XPVFM() my_safemalloc(sizeof(XPVFM))
891 #define del_XPVFM(p) my_safefree(p)
893 #define new_XPVIO() my_safemalloc(sizeof(XPVIO))
894 #define del_XPVIO(p) my_safefree(p)
897 =for apidoc sv_upgrade
899 Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
906 Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
916 if (mt != SVt_PV && SvREADONLY(sv) && SvFAKE(sv)) {
920 if (SvTYPE(sv) == mt)
926 switch (SvTYPE(sv)) {
947 else if (mt < SVt_PVIV)
964 pv = (char*)SvRV(sv);
984 else if (mt == SVt_NV)
995 del_XPVIV(SvANY(sv));
1005 del_XPVNV(SvANY(sv));
1013 magic = SvMAGIC(sv);
1014 stash = SvSTASH(sv);
1015 del_XPVMG(SvANY(sv));
1018 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
1023 Perl_croak(aTHX_ "Can't upgrade to undef");
1025 SvANY(sv) = new_XIV();
1029 SvANY(sv) = new_XNV();
1033 SvANY(sv) = new_XRV();
1037 SvANY(sv) = new_XPV();
1043 SvANY(sv) = new_XPVIV();
1053 SvANY(sv) = new_XPVNV();
1061 SvANY(sv) = new_XPVMG();
1067 SvMAGIC(sv) = magic;
1068 SvSTASH(sv) = stash;
1071 SvANY(sv) = new_XPVLV();
1077 SvMAGIC(sv) = magic;
1078 SvSTASH(sv) = stash;
1085 SvANY(sv) = new_XPVAV();
1093 SvMAGIC(sv) = magic;
1094 SvSTASH(sv) = stash;
1100 SvANY(sv) = new_XPVHV();
1108 SvMAGIC(sv) = magic;
1109 SvSTASH(sv) = stash;
1116 SvANY(sv) = new_XPVCV();
1117 Zero(SvANY(sv), 1, XPVCV);
1123 SvMAGIC(sv) = magic;
1124 SvSTASH(sv) = stash;
1127 SvANY(sv) = new_XPVGV();
1133 SvMAGIC(sv) = magic;
1134 SvSTASH(sv) = stash;
1142 SvANY(sv) = new_XPVBM();
1148 SvMAGIC(sv) = magic;
1149 SvSTASH(sv) = stash;
1155 SvANY(sv) = new_XPVFM();
1156 Zero(SvANY(sv), 1, XPVFM);
1162 SvMAGIC(sv) = magic;
1163 SvSTASH(sv) = stash;
1166 SvANY(sv) = new_XPVIO();
1167 Zero(SvANY(sv), 1, XPVIO);
1173 SvMAGIC(sv) = magic;
1174 SvSTASH(sv) = stash;
1175 IoPAGE_LEN(sv) = 60;
1178 SvFLAGS(sv) &= ~SVTYPEMASK;
1184 Perl_sv_backoff(pTHX_ register SV *sv)
1188 char *s = SvPVX(sv);
1189 SvLEN(sv) += SvIVX(sv);
1190 SvPVX(sv) -= SvIVX(sv);
1192 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1194 SvFLAGS(sv) &= ~SVf_OOK;
1201 Expands the character buffer in the SV. This will use C<sv_unref> and will
1202 upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1209 Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
1213 #ifdef HAS_64K_LIMIT
1214 if (newlen >= 0x10000) {
1215 PerlIO_printf(Perl_debug_log,
1216 "Allocation too large: %"UVxf"\n", (UV)newlen);
1219 #endif /* HAS_64K_LIMIT */
1222 if (SvTYPE(sv) < SVt_PV) {
1223 sv_upgrade(sv, SVt_PV);
1226 else if (SvOOK(sv)) { /* pv is offset? */
1229 if (newlen > SvLEN(sv))
1230 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1231 #ifdef HAS_64K_LIMIT
1232 if (newlen >= 0x10000)
1238 if (newlen > SvLEN(sv)) { /* need more room? */
1239 if (SvLEN(sv) && s) {
1240 #if defined(MYMALLOC) && !defined(LEAKTEST)
1241 STRLEN l = malloced_size((void*)SvPVX(sv));
1247 Renew(s,newlen,char);
1250 New(703,s,newlen,char);
1252 SvLEN_set(sv, newlen);
1258 =for apidoc sv_setiv
1260 Copies an integer into the given SV. Does not handle 'set' magic. See
1267 Perl_sv_setiv(pTHX_ register SV *sv, IV i)
1269 SV_CHECK_THINKFIRST(sv);
1270 switch (SvTYPE(sv)) {
1272 sv_upgrade(sv, SVt_IV);
1275 sv_upgrade(sv, SVt_PVNV);
1279 sv_upgrade(sv, SVt_PVIV);
1290 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1291 PL_op_desc[PL_op->op_type]);
1294 (void)SvIOK_only(sv); /* validate number */
1300 =for apidoc sv_setiv_mg
1302 Like C<sv_setiv>, but also handles 'set' magic.
1308 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1315 =for apidoc sv_setuv
1317 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1324 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
1332 =for apidoc sv_setuv_mg
1334 Like C<sv_setuv>, but also handles 'set' magic.
1340 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1347 =for apidoc sv_setnv
1349 Copies a double into the given SV. Does not handle 'set' magic. See
1356 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1358 SV_CHECK_THINKFIRST(sv);
1359 switch (SvTYPE(sv)) {
1362 sv_upgrade(sv, SVt_NV);
1367 sv_upgrade(sv, SVt_PVNV);
1378 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1379 PL_op_name[PL_op->op_type]);
1383 (void)SvNOK_only(sv); /* validate number */
1388 =for apidoc sv_setnv_mg
1390 Like C<sv_setnv>, but also handles 'set' magic.
1396 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1403 S_not_a_number(pTHX_ SV *sv)
1409 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1410 /* each *s can expand to 4 chars + "...\0",
1411 i.e. need room for 8 chars */
1413 for (s = SvPVX(sv); *s && d < limit; s++) {
1415 if (ch & 128 && !isPRINT_LC(ch)) {
1424 else if (ch == '\r') {
1428 else if (ch == '\f') {
1432 else if (ch == '\\') {
1436 else if (isPRINT_LC(ch))
1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1453 PL_op_desc[PL_op->op_type]);
1455 Perl_warner(aTHX_ WARN_NUMERIC,
1456 "Argument \"%s\" isn't numeric", tmpbuf);
1459 /* the number can be converted to integer with atol() or atoll() */
1460 #define IS_NUMBER_TO_INT_BY_ATOL 0x01
1461 #define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1462 #define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1463 #define IS_NUMBER_NEG 0x08 /* not good to cache UV */
1464 #define IS_NUMBER_INFINITY 0x10 /* this is big */
1466 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1467 until proven guilty, assume that things are not that bad... */
1470 Perl_sv_2iv(pTHX_ register SV *sv)
1474 if (SvGMAGICAL(sv)) {
1479 return I_V(SvNVX(sv));
1481 if (SvPOKp(sv) && SvLEN(sv))
1484 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1486 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1492 if (SvTHINKFIRST(sv)) {
1495 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1496 (SvRV(tmpstr) != SvRV(sv)))
1497 return SvIV(tmpstr);
1498 return PTR2IV(SvRV(sv));
1500 if (SvREADONLY(sv) && SvFAKE(sv)) {
1501 sv_force_normal(sv);
1503 if (SvREADONLY(sv) && !SvOK(sv)) {
1505 if (ckWARN(WARN_UNINITIALIZED))
1512 return (IV)(SvUVX(sv));
1519 /* We can cache the IV/UV value even if it not good enough
1520 * to reconstruct NV, since the conversion to PV will prefer
1524 if (SvTYPE(sv) == SVt_NV)
1525 sv_upgrade(sv, SVt_PVNV);
1528 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1529 SvIVX(sv) = I_V(SvNVX(sv));
1531 SvUVX(sv) = U_V(SvNVX(sv));
1534 DEBUG_c(PerlIO_printf(Perl_debug_log,
1535 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1539 return (IV)SvUVX(sv);
1542 else if (SvPOKp(sv) && SvLEN(sv)) {
1543 I32 numtype = looks_like_number(sv);
1545 /* We want to avoid a possible problem when we cache an IV which
1546 may be later translated to an NV, and the resulting NV is not
1547 the translation of the initial data.
1549 This means that if we cache such an IV, we need to cache the
1550 NV as well. Moreover, we trade speed for space, and do not
1551 cache the NV if not needed.
1553 if (numtype & IS_NUMBER_NOT_IV) {
1554 /* May be not an integer. Need to cache NV if we cache IV
1555 * - otherwise future conversion to NV will be wrong. */
1558 d = Atof(SvPVX(sv));
1560 if (SvTYPE(sv) < SVt_PVNV)
1561 sv_upgrade(sv, SVt_PVNV);
1565 #if defined(USE_LONG_DOUBLE)
1566 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1567 PTR2UV(sv), SvNVX(sv)));
1569 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1570 PTR2UV(sv), SvNVX(sv)));
1572 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1573 SvIVX(sv) = I_V(SvNVX(sv));
1575 SvUVX(sv) = U_V(SvNVX(sv));
1580 else { /* The NV may be reconstructed from IV - safe to cache IV,
1581 which may be calculated by atol(). */
1582 if (SvTYPE(sv) < SVt_PVIV)
1583 sv_upgrade(sv, SVt_PVIV);
1585 SvIVX(sv) = Atol(SvPVX(sv));
1586 if (! numtype && ckWARN(WARN_NUMERIC))
1592 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1594 if (SvTYPE(sv) < SVt_IV)
1595 /* Typically the caller expects that sv_any is not NULL now. */
1596 sv_upgrade(sv, SVt_IV);
1599 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1600 PTR2UV(sv),SvIVX(sv)));
1601 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1605 Perl_sv_2uv(pTHX_ register SV *sv)
1609 if (SvGMAGICAL(sv)) {
1614 return U_V(SvNVX(sv));
1615 if (SvPOKp(sv) && SvLEN(sv))
1618 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1620 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1626 if (SvTHINKFIRST(sv)) {
1629 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1630 (SvRV(tmpstr) != SvRV(sv)))
1631 return SvUV(tmpstr);
1632 return PTR2UV(SvRV(sv));
1634 if (SvREADONLY(sv) && !SvOK(sv)) {
1636 if (ckWARN(WARN_UNINITIALIZED))
1646 return (UV)SvIVX(sv);
1650 /* We can cache the IV/UV value even if it not good enough
1651 * to reconstruct NV, since the conversion to PV will prefer
1654 if (SvTYPE(sv) == SVt_NV)
1655 sv_upgrade(sv, SVt_PVNV);
1657 if (SvNVX(sv) >= -0.5) {
1659 SvUVX(sv) = U_V(SvNVX(sv));
1662 SvIVX(sv) = I_V(SvNVX(sv));
1664 DEBUG_c(PerlIO_printf(Perl_debug_log,
1665 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1668 (IV)(UV)SvIVX(sv)));
1669 return (UV)SvIVX(sv);
1672 else if (SvPOKp(sv) && SvLEN(sv)) {
1673 I32 numtype = looks_like_number(sv);
1675 /* We want to avoid a possible problem when we cache a UV which
1676 may be later translated to an NV, and the resulting NV is not
1677 the translation of the initial data.
1679 This means that if we cache such a UV, we need to cache the
1680 NV as well. Moreover, we trade speed for space, and do not
1681 cache the NV if not needed.
1683 if (numtype & IS_NUMBER_NOT_IV) {
1684 /* May be not an integer. Need to cache NV if we cache IV
1685 * - otherwise future conversion to NV will be wrong. */
1688 d = Atof(SvPVX(sv));
1690 if (SvTYPE(sv) < SVt_PVNV)
1691 sv_upgrade(sv, SVt_PVNV);
1695 #if defined(USE_LONG_DOUBLE)
1696 DEBUG_c(PerlIO_printf(Perl_debug_log,
1697 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1698 PTR2UV(sv), SvNVX(sv)));
1700 DEBUG_c(PerlIO_printf(Perl_debug_log,
1701 "0x%"UVxf" 2nv(%g)\n",
1702 PTR2UV(sv), SvNVX(sv)));
1704 if (SvNVX(sv) < -0.5) {
1705 SvIVX(sv) = I_V(SvNVX(sv));
1708 SvUVX(sv) = U_V(SvNVX(sv));
1712 else if (numtype & IS_NUMBER_NEG) {
1713 /* The NV may be reconstructed from IV - safe to cache IV,
1714 which may be calculated by atol(). */
1715 if (SvTYPE(sv) == SVt_PV)
1716 sv_upgrade(sv, SVt_PVIV);
1718 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1720 else if (numtype) { /* Non-negative */
1721 /* The NV may be reconstructed from UV - safe to cache UV,
1722 which may be calculated by strtoul()/atol. */
1723 if (SvTYPE(sv) == SVt_PV)
1724 sv_upgrade(sv, SVt_PVIV);
1726 (void)SvIsUV_on(sv);
1728 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1729 #else /* no atou(), but we know the number fits into IV... */
1730 /* The only problem may be if it is negative... */
1731 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1734 else { /* Not a number. Cache 0. */
1737 if (SvTYPE(sv) < SVt_PVIV)
1738 sv_upgrade(sv, SVt_PVIV);
1740 (void)SvIsUV_on(sv);
1741 SvUVX(sv) = 0; /* We assume that 0s have the
1742 same bitmap in IV and UV. */
1743 if (ckWARN(WARN_NUMERIC))
1748 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1750 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1753 if (SvTYPE(sv) < SVt_IV)
1754 /* Typically the caller expects that sv_any is not NULL now. */
1755 sv_upgrade(sv, SVt_IV);
1759 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1760 PTR2UV(sv),SvUVX(sv)));
1761 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1765 Perl_sv_2nv(pTHX_ register SV *sv)
1769 if (SvGMAGICAL(sv)) {
1773 if (SvPOKp(sv) && SvLEN(sv)) {
1775 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1777 return Atof(SvPVX(sv));
1781 return (NV)SvUVX(sv);
1783 return (NV)SvIVX(sv);
1786 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1788 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1794 if (SvTHINKFIRST(sv)) {
1797 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1798 (SvRV(tmpstr) != SvRV(sv)))
1799 return SvNV(tmpstr);
1800 return PTR2NV(SvRV(sv));
1802 if (SvREADONLY(sv) && !SvOK(sv)) {
1804 if (ckWARN(WARN_UNINITIALIZED))
1809 if (SvTYPE(sv) < SVt_NV) {
1810 if (SvTYPE(sv) == SVt_IV)
1811 sv_upgrade(sv, SVt_PVNV);
1813 sv_upgrade(sv, SVt_NV);
1814 #if defined(USE_LONG_DOUBLE)
1816 STORE_NUMERIC_LOCAL_SET_STANDARD();
1817 PerlIO_printf(Perl_debug_log,
1818 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1819 PTR2UV(sv), SvNVX(sv));
1820 RESTORE_NUMERIC_LOCAL();
1824 STORE_NUMERIC_LOCAL_SET_STANDARD();
1825 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1826 PTR2UV(sv), SvNVX(sv));
1827 RESTORE_NUMERIC_LOCAL();
1831 else if (SvTYPE(sv) < SVt_PVNV)
1832 sv_upgrade(sv, SVt_PVNV);
1834 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1836 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1838 else if (SvPOKp(sv) && SvLEN(sv)) {
1840 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1842 SvNVX(sv) = Atof(SvPVX(sv));
1846 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1848 if (SvTYPE(sv) < SVt_NV)
1849 /* Typically the caller expects that sv_any is not NULL now. */
1850 sv_upgrade(sv, SVt_NV);
1854 #if defined(USE_LONG_DOUBLE)
1856 STORE_NUMERIC_LOCAL_SET_STANDARD();
1857 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1858 PTR2UV(sv), SvNVX(sv));
1859 RESTORE_NUMERIC_LOCAL();
1863 STORE_NUMERIC_LOCAL_SET_STANDARD();
1864 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1865 PTR2UV(sv), SvNVX(sv));
1866 RESTORE_NUMERIC_LOCAL();
1873 S_asIV(pTHX_ SV *sv)
1875 I32 numtype = looks_like_number(sv);
1878 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1879 return Atol(SvPVX(sv));
1882 if (ckWARN(WARN_NUMERIC))
1885 d = Atof(SvPVX(sv));
1890 S_asUV(pTHX_ SV *sv)
1892 I32 numtype = looks_like_number(sv);
1895 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1896 return Strtoul(SvPVX(sv), Null(char**), 10);
1900 if (ckWARN(WARN_NUMERIC))
1903 return U_V(Atof(SvPVX(sv)));
1907 * Returns a combination of (advisory only - can get false negatives)
1908 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1910 * 0 if does not look like number.
1912 * In fact possible values are 0 and
1913 * IS_NUMBER_TO_INT_BY_ATOL 123
1914 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1915 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1916 * IS_NUMBER_INFINITY
1917 * with a possible addition of IS_NUMBER_NEG.
1921 =for apidoc looks_like_number
1923 Test if an the content of an SV looks like a number (or is a
1930 Perl_looks_like_number(pTHX_ SV *sv)
1933 register char *send;
1934 register char *sbegin;
1935 register char *nbegin;
1944 else if (SvPOKp(sv))
1945 sbegin = SvPV(sv, len);
1948 send = sbegin + len;
1955 numtype = IS_NUMBER_NEG;
1962 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1963 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1967 /* next must be digit or the radix separator or beginning of infinity */
1971 } while (isDIGIT(*s));
1973 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1974 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1976 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1979 #ifdef USE_LOCALE_NUMERIC
1980 || IS_NUMERIC_RADIX(*s)
1984 numtype |= IS_NUMBER_NOT_IV;
1985 while (isDIGIT(*s)) /* optional digits after the radix */
1990 #ifdef USE_LOCALE_NUMERIC
1991 || IS_NUMERIC_RADIX(*s)
1995 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1996 /* no digits before the radix means we need digits after it */
2000 } while (isDIGIT(*s));
2005 else if (*s == 'I' || *s == 'i') {
2006 s++; if (*s != 'N' && *s != 'n') return 0;
2007 s++; if (*s != 'F' && *s != 'f') return 0;
2008 s++; if (*s == 'I' || *s == 'i') {
2009 s++; if (*s != 'N' && *s != 'n') return 0;
2010 s++; if (*s != 'I' && *s != 'i') return 0;
2011 s++; if (*s != 'T' && *s != 't') return 0;
2012 s++; if (*s != 'Y' && *s != 'y') return 0;
2020 numtype = IS_NUMBER_INFINITY;
2022 /* we can have an optional exponent part */
2023 if (*s == 'e' || *s == 'E') {
2024 numtype &= ~IS_NUMBER_NEG;
2025 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2027 if (*s == '+' || *s == '-')
2032 } while (isDIGIT(*s));
2042 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2043 return IS_NUMBER_TO_INT_BY_ATOL;
2048 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2051 return sv_2pv(sv, &n_a);
2054 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2056 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2058 char *ptr = buf + TYPE_CHARS(UV);
2072 *--ptr = '0' + (uv % 10);
2081 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2086 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2087 char *tmpbuf = tbuf;
2093 if (SvGMAGICAL(sv)) {
2101 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2103 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2108 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2113 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2115 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2122 if (SvTHINKFIRST(sv)) {
2125 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2126 (SvRV(tmpstr) != SvRV(sv)))
2127 return SvPV(tmpstr,*lp);
2134 switch (SvTYPE(sv)) {
2136 if ( ((SvFLAGS(sv) &
2137 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2138 == (SVs_OBJECT|SVs_RMG))
2139 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2140 && (mg = mg_find(sv, 'r'))) {
2142 regexp *re = (regexp *)mg->mg_obj;
2145 char *fptr = "msix";
2150 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2152 while((ch = *fptr++)) {
2154 reflags[left++] = ch;
2157 reflags[right--] = ch;
2162 reflags[left] = '-';
2166 mg->mg_len = re->prelen + 4 + left;
2167 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2168 Copy("(?", mg->mg_ptr, 2, char);
2169 Copy(reflags, mg->mg_ptr+2, left, char);
2170 Copy(":", mg->mg_ptr+left+2, 1, char);
2171 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2172 mg->mg_ptr[mg->mg_len - 1] = ')';
2173 mg->mg_ptr[mg->mg_len] = 0;
2175 PL_reginterp_cnt += re->program[0].next_off;
2187 case SVt_PVBM: if (SvROK(sv))
2190 s = "SCALAR"; break;
2191 case SVt_PVLV: s = "LVALUE"; break;
2192 case SVt_PVAV: s = "ARRAY"; break;
2193 case SVt_PVHV: s = "HASH"; break;
2194 case SVt_PVCV: s = "CODE"; break;
2195 case SVt_PVGV: s = "GLOB"; break;
2196 case SVt_PVFM: s = "FORMAT"; break;
2197 case SVt_PVIO: s = "IO"; break;
2198 default: s = "UNKNOWN"; break;
2202 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2205 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2211 if (SvREADONLY(sv) && !SvOK(sv)) {
2213 if (ckWARN(WARN_UNINITIALIZED))
2219 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2220 /* XXXX 64-bit? IV may have better precision... */
2221 /* I tried changing this to be 64-bit-aware and
2222 * the t/op/numconvert.t became very, very, angry.
2224 if (SvTYPE(sv) < SVt_PVNV)
2225 sv_upgrade(sv, SVt_PVNV);
2226 /* The +20 is pure guesswork. Configure test needed. --jhi */
2227 SvGROW(sv, NV_DIG + 20);
2229 olderrno = errno; /* some Xenix systems wipe out errno here */
2231 if (SvNVX(sv) == 0.0)
2232 (void)strcpy(s,"0");
2236 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2239 #ifdef FIXNEGATIVEZERO
2240 if (*s == '-' && s[1] == '0' && !s[2])
2249 else if (SvIOKp(sv)) {
2250 U32 isIOK = SvIOK(sv);
2251 U32 isUIOK = SvIsUV(sv);
2252 char buf[TYPE_CHARS(UV)];
2255 if (SvTYPE(sv) < SVt_PVIV)
2256 sv_upgrade(sv, SVt_PVIV);
2258 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2260 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2261 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2262 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2263 SvCUR_set(sv, ebuf - ptr);
2276 if (ckWARN(WARN_UNINITIALIZED)
2277 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2282 if (SvTYPE(sv) < SVt_PV)
2283 /* Typically the caller expects that sv_any is not NULL now. */
2284 sv_upgrade(sv, SVt_PV);
2287 *lp = s - SvPVX(sv);
2290 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2291 PTR2UV(sv),SvPVX(sv)));
2295 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2296 /* Sneaky stuff here */
2300 tsv = newSVpv(tmpbuf, 0);
2316 len = strlen(tmpbuf);
2318 #ifdef FIXNEGATIVEZERO
2319 if (len == 2 && t[0] == '-' && t[1] == '0') {
2324 (void)SvUPGRADE(sv, SVt_PV);
2326 s = SvGROW(sv, len + 1);
2335 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2338 return sv_2pvbyte(sv, &n_a);
2342 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2344 return sv_2pv(sv,lp);
2348 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2351 return sv_2pvutf8(sv, &n_a);
2355 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2357 sv_utf8_upgrade(sv);
2358 return sv_2pv(sv,lp);
2361 /* This function is only called on magical items */
2363 Perl_sv_2bool(pTHX_ register SV *sv)
2373 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2374 (SvRV(tmpsv) != SvRV(sv)))
2375 return SvTRUE(tmpsv);
2376 return SvRV(sv) != 0;
2379 register XPV* Xpvtmp;
2380 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2381 (*Xpvtmp->xpv_pv > '0' ||
2382 Xpvtmp->xpv_cur > 1 ||
2383 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2390 return SvIVX(sv) != 0;
2393 return SvNVX(sv) != 0.0;
2401 =for apidoc sv_utf8_upgrade
2403 Convert the PV of an SV to its UTF8-encoded form.
2409 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2414 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2417 /* This function could be much more efficient if we had a FLAG in SVs
2418 * to signal if there are any hibit chars in the PV.
2420 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2425 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2426 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2427 SvCUR(sv) = len - 1;
2428 SvLEN(sv) = len; /* No longer know the real size. */
2430 Safefree(s); /* No longer using what was there before. */
2435 =for apidoc sv_utf8_downgrade
2437 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2438 This may not be possible if the PV contains non-byte encoding characters;
2439 if this is the case, either returns false or, if C<fail_ok> is not
2446 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2448 if (SvPOK(sv) && SvUTF8(sv)) {
2449 char *c = SvPVX(sv);
2450 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
2451 if (!utf8_to_bytes((U8*)c, &len)) {
2456 Perl_croak(aTHX_ "Wide character in %s",
2457 PL_op_desc[PL_op->op_type]);
2459 Perl_croak(aTHX_ "Wide character");
2462 SvCUR(sv) = len - 1;
2469 =for apidoc sv_utf8_encode
2471 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2472 flag so that it looks like bytes again. Nothing calls this.
2478 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2480 sv_utf8_upgrade(sv);
2485 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2489 bool has_utf = FALSE;
2490 if (!sv_utf8_downgrade(sv, TRUE))
2493 /* it is actually just a matter of turning the utf8 flag on, but
2494 * we want to make sure everything inside is valid utf8 first.
2497 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2500 while (c < SvEND(sv)) {
2511 /* Note: sv_setsv() should not be called with a source string that needs
2512 * to be reused, since it may destroy the source string if it is marked
2517 =for apidoc sv_setsv
2519 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2520 The source SV may be destroyed if it is mortal. Does not handle 'set'
2521 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2528 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2531 register U32 sflags;
2537 SV_CHECK_THINKFIRST(dstr);
2539 sstr = &PL_sv_undef;
2540 stype = SvTYPE(sstr);
2541 dtype = SvTYPE(dstr);
2545 /* There's a lot of redundancy below but we're going for speed here */
2550 if (dtype != SVt_PVGV) {
2551 (void)SvOK_off(dstr);
2559 sv_upgrade(dstr, SVt_IV);
2562 sv_upgrade(dstr, SVt_PVNV);
2566 sv_upgrade(dstr, SVt_PVIV);
2569 (void)SvIOK_only(dstr);
2570 SvIVX(dstr) = SvIVX(sstr);
2573 if (SvTAINTED(sstr))
2584 sv_upgrade(dstr, SVt_NV);
2589 sv_upgrade(dstr, SVt_PVNV);
2592 SvNVX(dstr) = SvNVX(sstr);
2593 (void)SvNOK_only(dstr);
2594 if (SvTAINTED(sstr))
2602 sv_upgrade(dstr, SVt_RV);
2603 else if (dtype == SVt_PVGV &&
2604 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2607 if (GvIMPORTED(dstr) != GVf_IMPORTED
2608 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2610 GvIMPORTED_on(dstr);
2621 sv_upgrade(dstr, SVt_PV);
2624 if (dtype < SVt_PVIV)
2625 sv_upgrade(dstr, SVt_PVIV);
2628 if (dtype < SVt_PVNV)
2629 sv_upgrade(dstr, SVt_PVNV);
2636 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2637 PL_op_name[PL_op->op_type]);
2639 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2643 if (dtype <= SVt_PVGV) {
2645 if (dtype != SVt_PVGV) {
2646 char *name = GvNAME(sstr);
2647 STRLEN len = GvNAMELEN(sstr);
2648 sv_upgrade(dstr, SVt_PVGV);
2649 sv_magic(dstr, dstr, '*', Nullch, 0);
2650 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2651 GvNAME(dstr) = savepvn(name, len);
2652 GvNAMELEN(dstr) = len;
2653 SvFAKE_on(dstr); /* can coerce to non-glob */
2655 /* ahem, death to those who redefine active sort subs */
2656 else if (PL_curstackinfo->si_type == PERLSI_SORT
2657 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2658 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2660 (void)SvOK_off(dstr);
2661 GvINTRO_off(dstr); /* one-shot flag */
2663 GvGP(dstr) = gp_ref(GvGP(sstr));
2664 if (SvTAINTED(sstr))
2666 if (GvIMPORTED(dstr) != GVf_IMPORTED
2667 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2669 GvIMPORTED_on(dstr);
2677 if (SvGMAGICAL(sstr)) {
2679 if (SvTYPE(sstr) != stype) {
2680 stype = SvTYPE(sstr);
2681 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2685 if (stype == SVt_PVLV)
2686 (void)SvUPGRADE(dstr, SVt_PVNV);
2688 (void)SvUPGRADE(dstr, stype);
2691 sflags = SvFLAGS(sstr);
2693 if (sflags & SVf_ROK) {
2694 if (dtype >= SVt_PV) {
2695 if (dtype == SVt_PVGV) {
2696 SV *sref = SvREFCNT_inc(SvRV(sstr));
2698 int intro = GvINTRO(dstr);
2703 GvINTRO_off(dstr); /* one-shot flag */
2704 Newz(602,gp, 1, GP);
2705 GvGP(dstr) = gp_ref(gp);
2706 GvSV(dstr) = NEWSV(72,0);
2707 GvLINE(dstr) = CopLINE(PL_curcop);
2708 GvEGV(dstr) = (GV*)dstr;
2711 switch (SvTYPE(sref)) {
2714 SAVESPTR(GvAV(dstr));
2716 dref = (SV*)GvAV(dstr);
2717 GvAV(dstr) = (AV*)sref;
2718 if (!GvIMPORTED_AV(dstr)
2719 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2721 GvIMPORTED_AV_on(dstr);
2726 SAVESPTR(GvHV(dstr));
2728 dref = (SV*)GvHV(dstr);
2729 GvHV(dstr) = (HV*)sref;
2730 if (!GvIMPORTED_HV(dstr)
2731 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2733 GvIMPORTED_HV_on(dstr);
2738 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2739 SvREFCNT_dec(GvCV(dstr));
2740 GvCV(dstr) = Nullcv;
2741 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2742 PL_sub_generation++;
2744 SAVESPTR(GvCV(dstr));
2747 dref = (SV*)GvCV(dstr);
2748 if (GvCV(dstr) != (CV*)sref) {
2749 CV* cv = GvCV(dstr);
2751 if (!GvCVGEN((GV*)dstr) &&
2752 (CvROOT(cv) || CvXSUB(cv)))
2755 /* ahem, death to those who redefine
2756 * active sort subs */
2757 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2758 PL_sortcop == CvSTART(cv))
2760 "Can't redefine active sort subroutine %s",
2761 GvENAME((GV*)dstr));
2762 /* Redefining a sub - warning is mandatory if
2763 it was a const and its value changed. */
2764 if (ckWARN(WARN_REDEFINE)
2766 && (!CvCONST((CV*)sref)
2767 || sv_cmp(cv_const_sv(cv),
2768 cv_const_sv((CV*)sref)))))
2770 Perl_warner(aTHX_ WARN_REDEFINE,
2772 ? "Constant subroutine %s redefined"
2773 : "Subroutine %s redefined",
2774 GvENAME((GV*)dstr));
2777 cv_ckproto(cv, (GV*)dstr,
2778 SvPOK(sref) ? SvPVX(sref) : Nullch);
2780 GvCV(dstr) = (CV*)sref;
2781 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2782 GvASSUMECV_on(dstr);
2783 PL_sub_generation++;
2785 if (!GvIMPORTED_CV(dstr)
2786 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2788 GvIMPORTED_CV_on(dstr);
2793 SAVESPTR(GvIOp(dstr));
2795 dref = (SV*)GvIOp(dstr);
2796 GvIOp(dstr) = (IO*)sref;
2800 SAVESPTR(GvFORM(dstr));
2802 dref = (SV*)GvFORM(dstr);
2803 GvFORM(dstr) = (CV*)sref;
2807 SAVESPTR(GvSV(dstr));
2809 dref = (SV*)GvSV(dstr);
2811 if (!GvIMPORTED_SV(dstr)
2812 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2814 GvIMPORTED_SV_on(dstr);
2822 if (SvTAINTED(sstr))
2827 (void)SvOOK_off(dstr); /* backoff */
2829 Safefree(SvPVX(dstr));
2830 SvLEN(dstr)=SvCUR(dstr)=0;
2833 (void)SvOK_off(dstr);
2834 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2836 if (sflags & SVp_NOK) {
2838 SvNVX(dstr) = SvNVX(sstr);
2840 if (sflags & SVp_IOK) {
2841 (void)SvIOK_on(dstr);
2842 SvIVX(dstr) = SvIVX(sstr);
2843 if (sflags & SVf_IVisUV)
2846 if (SvAMAGIC(sstr)) {
2850 else if (sflags & SVp_POK) {
2853 * Check to see if we can just swipe the string. If so, it's a
2854 * possible small lose on short strings, but a big win on long ones.
2855 * It might even be a win on short strings if SvPVX(dstr)
2856 * has to be allocated and SvPVX(sstr) has to be freed.
2859 if (SvTEMP(sstr) && /* slated for free anyway? */
2860 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2861 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2862 SvLEN(sstr)) /* and really is a string */
2864 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2866 SvFLAGS(dstr) &= ~SVf_OOK;
2867 Safefree(SvPVX(dstr) - SvIVX(dstr));
2869 else if (SvLEN(dstr))
2870 Safefree(SvPVX(dstr));
2872 (void)SvPOK_only(dstr);
2873 SvPV_set(dstr, SvPVX(sstr));
2874 SvLEN_set(dstr, SvLEN(sstr));
2875 SvCUR_set(dstr, SvCUR(sstr));
2878 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2879 SvPV_set(sstr, Nullch);
2884 else { /* have to copy actual string */
2885 STRLEN len = SvCUR(sstr);
2887 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2888 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2889 SvCUR_set(dstr, len);
2890 *SvEND(dstr) = '\0';
2891 (void)SvPOK_only(dstr);
2893 if ((sflags & SVf_UTF8) && !IN_BYTE)
2896 if (sflags & SVp_NOK) {
2898 SvNVX(dstr) = SvNVX(sstr);
2900 if (sflags & SVp_IOK) {
2901 (void)SvIOK_on(dstr);
2902 SvIVX(dstr) = SvIVX(sstr);
2903 if (sflags & SVf_IVisUV)
2907 else if (sflags & SVp_NOK) {
2908 SvNVX(dstr) = SvNVX(sstr);
2909 (void)SvNOK_only(dstr);
2910 if (sflags & SVf_IOK) {
2911 (void)SvIOK_on(dstr);
2912 SvIVX(dstr) = SvIVX(sstr);
2913 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2914 if (sflags & SVf_IVisUV)
2918 else if (sflags & SVp_IOK) {
2919 (void)SvIOK_only(dstr);
2920 SvIVX(dstr) = SvIVX(sstr);
2921 if (sflags & SVf_IVisUV)
2925 if (dtype == SVt_PVGV) {
2926 if (ckWARN(WARN_MISC))
2927 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2930 (void)SvOK_off(dstr);
2932 if (SvTAINTED(sstr))
2937 =for apidoc sv_setsv_mg
2939 Like C<sv_setsv>, but also handles 'set' magic.
2945 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2947 sv_setsv(dstr,sstr);
2952 =for apidoc sv_setpvn
2954 Copies a string into an SV. The C<len> parameter indicates the number of
2955 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2961 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2963 register char *dptr;
2964 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2965 elicit a warning, but it won't hurt. */
2966 SV_CHECK_THINKFIRST(sv);
2971 (void)SvUPGRADE(sv, SVt_PV);
2973 SvGROW(sv, len + 1);
2975 Move(ptr,dptr,len,char);
2978 (void)SvPOK_only(sv); /* validate pointer */
2983 =for apidoc sv_setpvn_mg
2985 Like C<sv_setpvn>, but also handles 'set' magic.
2991 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2993 sv_setpvn(sv,ptr,len);
2998 =for apidoc sv_setpv
3000 Copies a string into an SV. The string must be null-terminated. Does not
3001 handle 'set' magic. See C<sv_setpv_mg>.
3007 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3009 register STRLEN len;
3011 SV_CHECK_THINKFIRST(sv);
3017 (void)SvUPGRADE(sv, SVt_PV);
3019 SvGROW(sv, len + 1);
3020 Move(ptr,SvPVX(sv),len+1,char);
3022 (void)SvPOK_only(sv); /* validate pointer */
3027 =for apidoc sv_setpv_mg
3029 Like C<sv_setpv>, but also handles 'set' magic.
3035 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3042 =for apidoc sv_usepvn
3044 Tells an SV to use C<ptr> to find its string value. Normally the string is
3045 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3046 The C<ptr> should point to memory that was allocated by C<malloc>. The
3047 string length, C<len>, must be supplied. This function will realloc the
3048 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3049 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3050 See C<sv_usepvn_mg>.
3056 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3058 SV_CHECK_THINKFIRST(sv);
3059 (void)SvUPGRADE(sv, SVt_PV);
3064 (void)SvOOK_off(sv);
3065 if (SvPVX(sv) && SvLEN(sv))
3066 Safefree(SvPVX(sv));
3067 Renew(ptr, len+1, char);
3070 SvLEN_set(sv, len+1);
3072 (void)SvPOK_only(sv); /* validate pointer */
3077 =for apidoc sv_usepvn_mg
3079 Like C<sv_usepvn>, but also handles 'set' magic.
3085 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3087 sv_usepvn(sv,ptr,len);
3092 Perl_sv_force_normal(pTHX_ register SV *sv)
3094 if (SvREADONLY(sv)) {
3097 char *pvx = SvPVX(sv);
3098 STRLEN len = SvCUR(sv);
3099 U32 hash = SvUVX(sv);
3100 SvGROW(sv, len + 1);
3101 Move(pvx,SvPVX(sv),len,char);
3105 unsharepvn(pvx,len,hash);
3107 else if (PL_curcop != &PL_compiling)
3108 Perl_croak(aTHX_ PL_no_modify);
3112 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3119 Efficient removal of characters from the beginning of the string buffer.
3120 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3121 the string buffer. The C<ptr> becomes the first character of the adjusted
3128 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3132 register STRLEN delta;
3134 if (!ptr || !SvPOKp(sv))
3136 SV_CHECK_THINKFIRST(sv);
3137 if (SvTYPE(sv) < SVt_PVIV)
3138 sv_upgrade(sv,SVt_PVIV);
3141 if (!SvLEN(sv)) { /* make copy of shared string */
3142 char *pvx = SvPVX(sv);
3143 STRLEN len = SvCUR(sv);
3144 SvGROW(sv, len + 1);
3145 Move(pvx,SvPVX(sv),len,char);
3149 SvFLAGS(sv) |= SVf_OOK;
3151 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3152 delta = ptr - SvPVX(sv);
3160 =for apidoc sv_catpvn
3162 Concatenates the string onto the end of the string which is in the SV. The
3163 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3164 'set' magic. See C<sv_catpvn_mg>.
3170 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3175 junk = SvPV_force(sv, tlen);
3176 SvGROW(sv, tlen + len + 1);
3179 Move(ptr,SvPVX(sv)+tlen,len,char);
3182 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3187 =for apidoc sv_catpvn_mg
3189 Like C<sv_catpvn>, but also handles 'set' magic.
3195 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3197 sv_catpvn(sv,ptr,len);
3202 =for apidoc sv_catsv
3204 Concatenates the string from SV C<ssv> onto the end of the string in SV
3205 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3211 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3217 if ((s = SvPV(sstr, len))) {
3218 if (DO_UTF8(sstr)) {
3219 sv_utf8_upgrade(dstr);
3220 sv_catpvn(dstr,s,len);
3224 sv_catpvn(dstr,s,len);
3229 =for apidoc sv_catsv_mg
3231 Like C<sv_catsv>, but also handles 'set' magic.
3237 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3239 sv_catsv(dstr,sstr);
3244 =for apidoc sv_catpv
3246 Concatenates the string onto the end of the string which is in the SV.
3247 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3253 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3255 register STRLEN len;
3261 junk = SvPV_force(sv, tlen);
3263 SvGROW(sv, tlen + len + 1);
3266 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3268 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3273 =for apidoc sv_catpv_mg
3275 Like C<sv_catpv>, but also handles 'set' magic.
3281 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3288 Perl_newSV(pTHX_ STRLEN len)
3294 sv_upgrade(sv, SVt_PV);
3295 SvGROW(sv, len + 1);
3300 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3303 =for apidoc sv_magic
3305 Adds magic to an SV.
3311 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3315 if (SvREADONLY(sv)) {
3317 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3318 Perl_croak(aTHX_ PL_no_modify);
3320 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3321 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3328 (void)SvUPGRADE(sv, SVt_PVMG);
3330 Newz(702,mg, 1, MAGIC);
3331 mg->mg_moremagic = SvMAGIC(sv);
3334 if (!obj || obj == sv || how == '#' || how == 'r')
3338 mg->mg_obj = SvREFCNT_inc(obj);
3339 mg->mg_flags |= MGf_REFCOUNTED;
3342 mg->mg_len = namlen;
3345 mg->mg_ptr = savepvn(name, namlen);
3346 else if (namlen == HEf_SVKEY)
3347 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3351 mg->mg_virtual = &PL_vtbl_sv;
3354 mg->mg_virtual = &PL_vtbl_amagic;
3357 mg->mg_virtual = &PL_vtbl_amagicelem;
3363 mg->mg_virtual = &PL_vtbl_bm;
3366 mg->mg_virtual = &PL_vtbl_regdata;
3369 mg->mg_virtual = &PL_vtbl_regdatum;
3372 mg->mg_virtual = &PL_vtbl_env;
3375 mg->mg_virtual = &PL_vtbl_fm;
3378 mg->mg_virtual = &PL_vtbl_envelem;
3381 mg->mg_virtual = &PL_vtbl_mglob;
3384 mg->mg_virtual = &PL_vtbl_isa;
3387 mg->mg_virtual = &PL_vtbl_isaelem;
3390 mg->mg_virtual = &PL_vtbl_nkeys;
3397 mg->mg_virtual = &PL_vtbl_dbline;
3401 mg->mg_virtual = &PL_vtbl_mutex;
3403 #endif /* USE_THREADS */
3404 #ifdef USE_LOCALE_COLLATE
3406 mg->mg_virtual = &PL_vtbl_collxfrm;
3408 #endif /* USE_LOCALE_COLLATE */
3410 mg->mg_virtual = &PL_vtbl_pack;
3414 mg->mg_virtual = &PL_vtbl_packelem;
3417 mg->mg_virtual = &PL_vtbl_regexp;
3420 mg->mg_virtual = &PL_vtbl_sig;
3423 mg->mg_virtual = &PL_vtbl_sigelem;
3426 mg->mg_virtual = &PL_vtbl_taint;
3430 mg->mg_virtual = &PL_vtbl_uvar;
3433 mg->mg_virtual = &PL_vtbl_vec;
3436 mg->mg_virtual = &PL_vtbl_substr;
3439 mg->mg_virtual = &PL_vtbl_defelem;
3442 mg->mg_virtual = &PL_vtbl_glob;
3445 mg->mg_virtual = &PL_vtbl_arylen;
3448 mg->mg_virtual = &PL_vtbl_pos;
3451 mg->mg_virtual = &PL_vtbl_backref;
3453 case '~': /* Reserved for use by extensions not perl internals. */
3454 /* Useful for attaching extension internal data to perl vars. */
3455 /* Note that multiple extensions may clash if magical scalars */
3456 /* etc holding private data from one are passed to another. */
3460 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3464 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3468 =for apidoc sv_unmagic
3470 Removes magic from an SV.
3476 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3480 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3483 for (mg = *mgp; mg; mg = *mgp) {
3484 if (mg->mg_type == type) {
3485 MGVTBL* vtbl = mg->mg_virtual;
3486 *mgp = mg->mg_moremagic;
3487 if (vtbl && vtbl->svt_free)
3488 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3489 if (mg->mg_ptr && mg->mg_type != 'g')
3490 if (mg->mg_len >= 0)
3491 Safefree(mg->mg_ptr);
3492 else if (mg->mg_len == HEf_SVKEY)
3493 SvREFCNT_dec((SV*)mg->mg_ptr);
3494 if (mg->mg_flags & MGf_REFCOUNTED)
3495 SvREFCNT_dec(mg->mg_obj);
3499 mgp = &mg->mg_moremagic;
3503 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3510 =for apidoc sv_rvweaken
3518 Perl_sv_rvweaken(pTHX_ SV *sv)
3521 if (!SvOK(sv)) /* let undefs pass */
3524 Perl_croak(aTHX_ "Can't weaken a nonreference");
3525 else if (SvWEAKREF(sv)) {
3527 if (ckWARN(WARN_MISC))
3528 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3532 sv_add_backref(tsv, sv);
3539 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3543 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3544 av = (AV*)mg->mg_obj;
3547 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3548 SvREFCNT_dec(av); /* for sv_magic */
3554 S_sv_del_backref(pTHX_ SV *sv)
3561 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3562 Perl_croak(aTHX_ "panic: del_backref");
3563 av = (AV *)mg->mg_obj;
3568 svp[i] = &PL_sv_undef; /* XXX */
3575 =for apidoc sv_insert
3577 Inserts a string at the specified offset/length within the SV. Similar to
3578 the Perl substr() function.
3584 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3588 register char *midend;
3589 register char *bigend;
3595 Perl_croak(aTHX_ "Can't modify non-existent substring");
3596 SvPV_force(bigstr, curlen);
3597 (void)SvPOK_only_UTF8(bigstr);
3598 if (offset + len > curlen) {
3599 SvGROW(bigstr, offset+len+1);
3600 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3601 SvCUR_set(bigstr, offset+len);
3605 i = littlelen - len;
3606 if (i > 0) { /* string might grow */
3607 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3608 mid = big + offset + len;
3609 midend = bigend = big + SvCUR(bigstr);
3612 while (midend > mid) /* shove everything down */
3613 *--bigend = *--midend;
3614 Move(little,big+offset,littlelen,char);
3620 Move(little,SvPVX(bigstr)+offset,len,char);
3625 big = SvPVX(bigstr);
3628 bigend = big + SvCUR(bigstr);
3630 if (midend > bigend)
3631 Perl_croak(aTHX_ "panic: sv_insert");
3633 if (mid - big > bigend - midend) { /* faster to shorten from end */
3635 Move(little, mid, littlelen,char);
3638 i = bigend - midend;
3640 Move(midend, mid, i,char);
3644 SvCUR_set(bigstr, mid - big);
3647 else if ((i = mid - big)) { /* faster from front */
3648 midend -= littlelen;
3650 sv_chop(bigstr,midend-i);
3655 Move(little, mid, littlelen,char);
3657 else if (littlelen) {
3658 midend -= littlelen;
3659 sv_chop(bigstr,midend);
3660 Move(little,midend,littlelen,char);
3663 sv_chop(bigstr,midend);
3669 =for apidoc sv_replace
3671 Make the first argument a copy of the second, then delete the original.
3677 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3680 U32 refcnt = SvREFCNT(sv);
3681 SV_CHECK_THINKFIRST(sv);
3682 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3683 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3684 if (SvMAGICAL(sv)) {
3688 sv_upgrade(nsv, SVt_PVMG);
3689 SvMAGIC(nsv) = SvMAGIC(sv);
3690 SvFLAGS(nsv) |= SvMAGICAL(sv);
3696 assert(!SvREFCNT(sv));
3697 StructCopy(nsv,sv,SV);
3698 SvREFCNT(sv) = refcnt;
3699 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3704 =for apidoc sv_clear
3706 Clear an SV, making it empty. Does not free the memory used by the SV
3713 Perl_sv_clear(pTHX_ register SV *sv)
3717 assert(SvREFCNT(sv) == 0);
3721 if (PL_defstash) { /* Still have a symbol table? */
3726 Zero(&tmpref, 1, SV);
3727 sv_upgrade(&tmpref, SVt_RV);
3729 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3730 SvREFCNT(&tmpref) = 1;
3733 stash = SvSTASH(sv);
3734 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3737 PUSHSTACKi(PERLSI_DESTROY);
3738 SvRV(&tmpref) = SvREFCNT_inc(sv);
3743 call_sv((SV*)GvCV(destructor),
3744 G_DISCARD|G_EVAL|G_KEEPERR);
3750 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3752 del_XRV(SvANY(&tmpref));
3755 if (PL_in_clean_objs)
3756 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3758 /* DESTROY gave object new lease on life */
3764 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3765 SvOBJECT_off(sv); /* Curse the object. */
3766 if (SvTYPE(sv) != SVt_PVIO)
3767 --PL_sv_objcount; /* XXX Might want something more general */
3770 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3773 switch (SvTYPE(sv)) {
3776 IoIFP(sv) != PerlIO_stdin() &&
3777 IoIFP(sv) != PerlIO_stdout() &&
3778 IoIFP(sv) != PerlIO_stderr())
3780 io_close((IO*)sv, FALSE);
3782 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3783 PerlDir_close(IoDIRP(sv));
3784 IoDIRP(sv) = (DIR*)NULL;
3785 Safefree(IoTOP_NAME(sv));
3786 Safefree(IoFMT_NAME(sv));
3787 Safefree(IoBOTTOM_NAME(sv));
3802 SvREFCNT_dec(LvTARG(sv));
3806 Safefree(GvNAME(sv));
3807 /* cannot decrease stash refcount yet, as we might recursively delete
3808 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3809 of stash until current sv is completely gone.
3810 -- JohnPC, 27 Mar 1998 */
3811 stash = GvSTASH(sv);
3817 (void)SvOOK_off(sv);
3825 SvREFCNT_dec(SvRV(sv));
3827 else if (SvPVX(sv) && SvLEN(sv))
3828 Safefree(SvPVX(sv));
3829 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3830 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3842 switch (SvTYPE(sv)) {
3858 del_XPVIV(SvANY(sv));
3861 del_XPVNV(SvANY(sv));
3864 del_XPVMG(SvANY(sv));
3867 del_XPVLV(SvANY(sv));
3870 del_XPVAV(SvANY(sv));
3873 del_XPVHV(SvANY(sv));
3876 del_XPVCV(SvANY(sv));
3879 del_XPVGV(SvANY(sv));
3880 /* code duplication for increased performance. */
3881 SvFLAGS(sv) &= SVf_BREAK;
3882 SvFLAGS(sv) |= SVTYPEMASK;
3883 /* decrease refcount of the stash that owns this GV, if any */
3885 SvREFCNT_dec(stash);
3886 return; /* not break, SvFLAGS reset already happened */
3888 del_XPVBM(SvANY(sv));
3891 del_XPVFM(SvANY(sv));
3894 del_XPVIO(SvANY(sv));
3897 SvFLAGS(sv) &= SVf_BREAK;
3898 SvFLAGS(sv) |= SVTYPEMASK;
3902 Perl_sv_newref(pTHX_ SV *sv)
3905 ATOMIC_INC(SvREFCNT(sv));
3912 Free the memory used by an SV.
3918 Perl_sv_free(pTHX_ SV *sv)
3921 int refcount_is_zero;
3925 if (SvREFCNT(sv) == 0) {
3926 if (SvFLAGS(sv) & SVf_BREAK)
3928 if (PL_in_clean_all) /* All is fair */
3930 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3931 /* make sure SvREFCNT(sv)==0 happens very seldom */
3932 SvREFCNT(sv) = (~(U32)0)/2;
3935 if (ckWARN_d(WARN_INTERNAL))
3936 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3939 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3940 if (!refcount_is_zero)
3944 if (ckWARN_d(WARN_DEBUGGING))
3945 Perl_warner(aTHX_ WARN_DEBUGGING,
3946 "Attempt to free temp prematurely: SV 0x%"UVxf,
3951 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3952 /* make sure SvREFCNT(sv)==0 happens very seldom */
3953 SvREFCNT(sv) = (~(U32)0)/2;
3964 Returns the length of the string in the SV. See also C<SvCUR>.
3970 Perl_sv_len(pTHX_ register SV *sv)
3979 len = mg_length(sv);
3981 junk = SvPV(sv, len);
3986 =for apidoc sv_len_utf8
3988 Returns the number of characters in the string in an SV, counting wide
3989 UTF8 bytes as a single character.
3995 Perl_sv_len_utf8(pTHX_ register SV *sv)
4002 return mg_length(sv);
4007 U8 *s = (U8*)SvPV(sv, len);
4009 return Perl_utf8_length(aTHX_ s, s + len);
4014 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4019 I32 uoffset = *offsetp;
4025 start = s = (U8*)SvPV(sv, len);
4027 while (s < send && uoffset--)
4031 *offsetp = s - start;
4035 while (s < send && ulen--)
4045 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4054 s = (U8*)SvPV(sv, len);
4056 Perl_croak(aTHX_ "panic: bad byte offset");
4057 send = s + *offsetp;
4065 if (ckWARN_d(WARN_UTF8))
4066 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4076 Returns a boolean indicating whether the strings in the two SVs are
4083 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4090 bool pv1tmp = FALSE;
4091 bool pv2tmp = FALSE;
4098 pv1 = SvPV(sv1, cur1);
4105 pv2 = SvPV(sv2, cur2);
4107 /* do not utf8ize the comparands as a side-effect */
4108 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4110 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4114 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4120 eq = memEQ(pv1, pv2, cur1);
4133 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4134 string in C<sv1> is less than, equal to, or greater than the string in
4141 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4146 bool pv1tmp = FALSE;
4147 bool pv2tmp = FALSE;
4154 pv1 = SvPV(sv1, cur1);
4161 pv2 = SvPV(sv2, cur2);
4163 /* do not utf8ize the comparands as a side-effect */
4164 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4166 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4170 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4176 cmp = cur2 ? -1 : 0;
4180 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4183 cmp = retval < 0 ? -1 : 1;
4184 } else if (cur1 == cur2) {
4187 cmp = cur1 < cur2 ? -1 : 1;
4200 =for apidoc sv_cmp_locale
4202 Compares the strings in two SVs in a locale-aware manner. See
4209 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4211 #ifdef USE_LOCALE_COLLATE
4217 if (PL_collation_standard)
4221 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4223 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4225 if (!pv1 || !len1) {
4236 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4239 return retval < 0 ? -1 : 1;
4242 * When the result of collation is equality, that doesn't mean
4243 * that there are no differences -- some locales exclude some
4244 * characters from consideration. So to avoid false equalities,
4245 * we use the raw string as a tiebreaker.
4251 #endif /* USE_LOCALE_COLLATE */
4253 return sv_cmp(sv1, sv2);
4256 #ifdef USE_LOCALE_COLLATE
4258 * Any scalar variable may carry an 'o' magic that contains the
4259 * scalar data of the variable transformed to such a format that
4260 * a normal memory comparison can be used to compare the data
4261 * according to the locale settings.
4264 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4268 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4269 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4274 Safefree(mg->mg_ptr);
4276 if ((xf = mem_collxfrm(s, len, &xlen))) {
4277 if (SvREADONLY(sv)) {
4280 return xf + sizeof(PL_collation_ix);
4283 sv_magic(sv, 0, 'o', 0, 0);
4284 mg = mg_find(sv, 'o');
4297 if (mg && mg->mg_ptr) {
4299 return mg->mg_ptr + sizeof(PL_collation_ix);
4307 #endif /* USE_LOCALE_COLLATE */
4312 Get a line from the filehandle and store it into the SV, optionally
4313 appending to the currently-stored string.
4319 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4324 register STDCHAR rslast;
4325 register STDCHAR *bp;
4329 SV_CHECK_THINKFIRST(sv);
4330 (void)SvUPGRADE(sv, SVt_PV);
4334 if (RsSNARF(PL_rs)) {
4338 else if (RsRECORD(PL_rs)) {
4339 I32 recsize, bytesread;
4342 /* Grab the size of the record we're getting */
4343 recsize = SvIV(SvRV(PL_rs));
4344 (void)SvPOK_only(sv); /* Validate pointer */
4345 buffer = SvGROW(sv, recsize + 1);
4348 /* VMS wants read instead of fread, because fread doesn't respect */
4349 /* RMS record boundaries. This is not necessarily a good thing to be */
4350 /* doing, but we've got no other real choice */
4351 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4353 bytesread = PerlIO_read(fp, buffer, recsize);
4355 SvCUR_set(sv, bytesread);
4356 buffer[bytesread] = '\0';
4357 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4359 else if (RsPARA(PL_rs)) {
4364 rsptr = SvPV(PL_rs, rslen);
4365 rslast = rslen ? rsptr[rslen - 1] : '\0';
4367 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4368 do { /* to make sure file boundaries work right */
4371 i = PerlIO_getc(fp);
4375 PerlIO_ungetc(fp,i);
4381 /* See if we know enough about I/O mechanism to cheat it ! */
4383 /* This used to be #ifdef test - it is made run-time test for ease
4384 of abstracting out stdio interface. One call should be cheap
4385 enough here - and may even be a macro allowing compile
4389 if (PerlIO_fast_gets(fp)) {
4392 * We're going to steal some values from the stdio struct
4393 * and put EVERYTHING in the innermost loop into registers.
4395 register STDCHAR *ptr;
4399 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4400 /* An ungetc()d char is handled separately from the regular
4401 * buffer, so we getc() it back out and stuff it in the buffer.
4403 i = PerlIO_getc(fp);
4404 if (i == EOF) return 0;
4405 *(--((*fp)->_ptr)) = (unsigned char) i;
4409 /* Here is some breathtakingly efficient cheating */
4411 cnt = PerlIO_get_cnt(fp); /* get count into register */
4412 (void)SvPOK_only(sv); /* validate pointer */
4413 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4414 if (cnt > 80 && SvLEN(sv) > append) {
4415 shortbuffered = cnt - SvLEN(sv) + append + 1;
4416 cnt -= shortbuffered;
4420 /* remember that cnt can be negative */
4421 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4426 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4427 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4428 DEBUG_P(PerlIO_printf(Perl_debug_log,
4429 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4430 DEBUG_P(PerlIO_printf(Perl_debug_log,
4431 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4432 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4433 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4438 while (cnt > 0) { /* this | eat */
4440 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4441 goto thats_all_folks; /* screams | sed :-) */
4445 Copy(ptr, bp, cnt, char); /* this | eat */
4446 bp += cnt; /* screams | dust */
4447 ptr += cnt; /* louder | sed :-) */
4452 if (shortbuffered) { /* oh well, must extend */
4453 cnt = shortbuffered;
4455 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4457 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4458 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4462 DEBUG_P(PerlIO_printf(Perl_debug_log,
4463 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4464 PTR2UV(ptr),(long)cnt));
4465 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4466 DEBUG_P(PerlIO_printf(Perl_debug_log,
4467 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4468 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4469 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4470 /* This used to call 'filbuf' in stdio form, but as that behaves like
4471 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4472 another abstraction. */
4473 i = PerlIO_getc(fp); /* get more characters */
4474 DEBUG_P(PerlIO_printf(Perl_debug_log,
4475 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4476 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4477 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4478 cnt = PerlIO_get_cnt(fp);
4479 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4480 DEBUG_P(PerlIO_printf(Perl_debug_log,
4481 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4483 if (i == EOF) /* all done for ever? */
4484 goto thats_really_all_folks;
4486 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4488 SvGROW(sv, bpx + cnt + 2);
4489 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4491 *bp++ = i; /* store character from PerlIO_getc */
4493 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4494 goto thats_all_folks;
4498 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4499 memNE((char*)bp - rslen, rsptr, rslen))
4500 goto screamer; /* go back to the fray */
4501 thats_really_all_folks:
4503 cnt += shortbuffered;
4504 DEBUG_P(PerlIO_printf(Perl_debug_log,
4505 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4506 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4507 DEBUG_P(PerlIO_printf(Perl_debug_log,
4508 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4509 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4510 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4512 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4513 DEBUG_P(PerlIO_printf(Perl_debug_log,
4514 "Screamer: done, len=%ld, string=|%.*s|\n",
4515 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4520 /*The big, slow, and stupid way */
4523 /* Need to work around EPOC SDK features */
4524 /* On WINS: MS VC5 generates calls to _chkstk, */
4525 /* if a `large' stack frame is allocated */
4526 /* gcc on MARM does not generate calls like these */
4532 register STDCHAR *bpe = buf + sizeof(buf);
4534 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4535 ; /* keep reading */
4539 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4540 /* Accomodate broken VAXC compiler, which applies U8 cast to
4541 * both args of ?: operator, causing EOF to change into 255
4543 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4547 sv_catpvn(sv, (char *) buf, cnt);
4549 sv_setpvn(sv, (char *) buf, cnt);
4551 if (i != EOF && /* joy */
4553 SvCUR(sv) < rslen ||
4554 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4558 * If we're reading from a TTY and we get a short read,
4559 * indicating that the user hit his EOF character, we need
4560 * to notice it now, because if we try to read from the TTY
4561 * again, the EOF condition will disappear.
4563 * The comparison of cnt to sizeof(buf) is an optimization
4564 * that prevents unnecessary calls to feof().
4568 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4573 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4574 while (i != EOF) { /* to make sure file boundaries work right */
4575 i = PerlIO_getc(fp);
4577 PerlIO_ungetc(fp,i);
4583 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4590 Auto-increment of the value in the SV.
4596 Perl_sv_inc(pTHX_ register SV *sv)
4605 if (SvTHINKFIRST(sv)) {
4606 if (SvREADONLY(sv)) {
4608 if (PL_curcop != &PL_compiling)
4609 Perl_croak(aTHX_ PL_no_modify);
4613 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4615 i = PTR2IV(SvRV(sv));
4620 flags = SvFLAGS(sv);
4621 if (flags & SVp_NOK) {
4622 (void)SvNOK_only(sv);
4626 if (flags & SVp_IOK) {
4628 if (SvUVX(sv) == UV_MAX)
4629 sv_setnv(sv, (NV)UV_MAX + 1.0);
4631 (void)SvIOK_only_UV(sv);
4634 if (SvIVX(sv) == IV_MAX)
4635 sv_setnv(sv, (NV)IV_MAX + 1.0);
4637 (void)SvIOK_only(sv);
4643 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4644 if ((flags & SVTYPEMASK) < SVt_PVNV)
4645 sv_upgrade(sv, SVt_NV);
4647 (void)SvNOK_only(sv);
4651 while (isALPHA(*d)) d++;
4652 while (isDIGIT(*d)) d++;
4654 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4658 while (d >= SvPVX(sv)) {
4666 /* MKS: The original code here died if letters weren't consecutive.
4667 * at least it didn't have to worry about non-C locales. The
4668 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4669 * arranged in order (although not consecutively) and that only
4670 * [A-Za-z] are accepted by isALPHA in the C locale.
4672 if (*d != 'z' && *d != 'Z') {
4673 do { ++*d; } while (!isALPHA(*d));
4676 *(d--) -= 'z' - 'a';
4681 *(d--) -= 'z' - 'a' + 1;
4685 /* oh,oh, the number grew */
4686 SvGROW(sv, SvCUR(sv) + 2);
4688 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4699 Auto-decrement of the value in the SV.
4705 Perl_sv_dec(pTHX_ register SV *sv)
4713 if (SvTHINKFIRST(sv)) {
4714 if (SvREADONLY(sv)) {
4716 if (PL_curcop != &PL_compiling)
4717 Perl_croak(aTHX_ PL_no_modify);
4721 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4723 i = PTR2IV(SvRV(sv));
4728 flags = SvFLAGS(sv);
4729 if (flags & SVp_NOK) {
4731 (void)SvNOK_only(sv);
4734 if (flags & SVp_IOK) {
4736 if (SvUVX(sv) == 0) {
4737 (void)SvIOK_only(sv);
4741 (void)SvIOK_only_UV(sv);
4745 if (SvIVX(sv) == IV_MIN)
4746 sv_setnv(sv, (NV)IV_MIN - 1.0);
4748 (void)SvIOK_only(sv);
4754 if (!(flags & SVp_POK)) {
4755 if ((flags & SVTYPEMASK) < SVt_PVNV)
4756 sv_upgrade(sv, SVt_NV);
4758 (void)SvNOK_only(sv);
4761 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4765 =for apidoc sv_mortalcopy
4767 Creates a new SV which is a copy of the original SV. The new SV is marked
4773 /* Make a string that will exist for the duration of the expression
4774 * evaluation. Actually, it may have to last longer than that, but
4775 * hopefully we won't free it until it has been assigned to a
4776 * permanent location. */
4779 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4785 sv_setsv(sv,oldstr);
4787 PL_tmps_stack[++PL_tmps_ix] = sv;
4793 =for apidoc sv_newmortal
4795 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4801 Perl_sv_newmortal(pTHX)
4807 SvFLAGS(sv) = SVs_TEMP;
4809 PL_tmps_stack[++PL_tmps_ix] = sv;
4814 =for apidoc sv_2mortal
4816 Marks an SV as mortal. The SV will be destroyed when the current context
4822 /* same thing without the copying */
4825 Perl_sv_2mortal(pTHX_ register SV *sv)
4830 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4833 PL_tmps_stack[++PL_tmps_ix] = sv;
4841 Creates a new SV and copies a string into it. The reference count for the
4842 SV is set to 1. If C<len> is zero, Perl will compute the length using
4843 strlen(). For efficiency, consider using C<newSVpvn> instead.
4849 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4856 sv_setpvn(sv,s,len);
4861 =for apidoc newSVpvn
4863 Creates a new SV and copies a string into it. The reference count for the
4864 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4865 string. You are responsible for ensuring that the source string is at least
4872 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4877 sv_setpvn(sv,s,len);
4882 =for apidoc newSVpvn_share
4884 Creates a new SV and populates it with a string from
4885 the string table. Turns on READONLY and FAKE.
4886 The idea here is that as string table is used for shared hash
4887 keys these strings will have SvPVX == HeKEY and hash lookup
4888 will avoid string compare.
4894 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4898 PERL_HASH(hash, src, len);
4900 sv_upgrade(sv, SVt_PVIV);
4901 SvPVX(sv) = sharepvn(src, len, hash);
4911 #if defined(PERL_IMPLICIT_CONTEXT)
4913 Perl_newSVpvf_nocontext(const char* pat, ...)
4918 va_start(args, pat);
4919 sv = vnewSVpvf(pat, &args);
4926 =for apidoc newSVpvf
4928 Creates a new SV an initialize it with the string formatted like
4935 Perl_newSVpvf(pTHX_ const char* pat, ...)
4939 va_start(args, pat);
4940 sv = vnewSVpvf(pat, &args);
4946 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4950 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4957 Creates a new SV and copies a floating point value into it.
4958 The reference count for the SV is set to 1.
4964 Perl_newSVnv(pTHX_ NV n)
4976 Creates a new SV and copies an integer into it. The reference count for the
4983 Perl_newSViv(pTHX_ IV i)
4995 Creates a new SV and copies an unsigned integer into it.
4996 The reference count for the SV is set to 1.
5002 Perl_newSVuv(pTHX_ UV u)
5012 =for apidoc newRV_noinc
5014 Creates an RV wrapper for an SV. The reference count for the original
5015 SV is B<not> incremented.
5021 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5027 sv_upgrade(sv, SVt_RV);
5034 /* newRV_inc is #defined to newRV in sv.h */
5036 Perl_newRV(pTHX_ SV *tmpRef)
5038 return newRV_noinc(SvREFCNT_inc(tmpRef));
5044 Creates a new SV which is an exact duplicate of the original SV.
5049 /* make an exact duplicate of old */
5052 Perl_newSVsv(pTHX_ register SV *old)
5059 if (SvTYPE(old) == SVTYPEMASK) {
5060 if (ckWARN_d(WARN_INTERNAL))
5061 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5076 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5084 char todo[PERL_UCHAR_MAX+1];
5089 if (!*s) { /* reset ?? searches */
5090 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5091 pm->op_pmdynflags &= ~PMdf_USED;
5096 /* reset variables */
5098 if (!HvARRAY(stash))
5101 Zero(todo, 256, char);
5103 i = (unsigned char)*s;
5107 max = (unsigned char)*s++;
5108 for ( ; i <= max; i++) {
5111 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5112 for (entry = HvARRAY(stash)[i];
5114 entry = HeNEXT(entry))
5116 if (!todo[(U8)*HeKEY(entry)])
5118 gv = (GV*)HeVAL(entry);
5120 if (SvTHINKFIRST(sv)) {
5121 if (!SvREADONLY(sv) && SvROK(sv))
5126 if (SvTYPE(sv) >= SVt_PV) {
5128 if (SvPVX(sv) != Nullch)
5135 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5137 #if !defined( VMS) && !defined(EPOC) /* VMS has no environ array */
5139 environ[0] = Nullch;
5148 Perl_sv_2io(pTHX_ SV *sv)
5154 switch (SvTYPE(sv)) {
5162 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5166 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5168 return sv_2io(SvRV(sv));
5169 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5175 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5182 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5189 return *gvp = Nullgv, Nullcv;
5190 switch (SvTYPE(sv)) {
5210 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5211 tryAMAGICunDEREF(to_cv);
5214 if (SvTYPE(sv) == SVt_PVCV) {
5223 Perl_croak(aTHX_ "Not a subroutine reference");
5228 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5234 if (lref && !GvCVu(gv)) {
5237 tmpsv = NEWSV(704,0);
5238 gv_efullname3(tmpsv, gv, Nullch);
5239 /* XXX this is probably not what they think they're getting.
5240 * It has the same effect as "sub name;", i.e. just a forward
5242 newSUB(start_subparse(FALSE, 0),
5243 newSVOP(OP_CONST, 0, tmpsv),
5248 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5257 Returns true if the SV has a true value by Perl's rules.
5263 Perl_sv_true(pTHX_ register SV *sv)
5270 if ((tXpv = (XPV*)SvANY(sv)) &&
5271 (tXpv->xpv_cur > 1 ||
5272 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5279 return SvIVX(sv) != 0;
5282 return SvNVX(sv) != 0.0;
5284 return sv_2bool(sv);
5290 Perl_sv_iv(pTHX_ register SV *sv)
5294 return (IV)SvUVX(sv);
5301 Perl_sv_uv(pTHX_ register SV *sv)
5306 return (UV)SvIVX(sv);
5312 Perl_sv_nv(pTHX_ register SV *sv)
5320 Perl_sv_pv(pTHX_ SV *sv)
5327 return sv_2pv(sv, &n_a);
5331 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5337 return sv_2pv(sv, lp);
5341 =for apidoc sv_pvn_force
5343 Get a sensible string out of the SV somehow.
5349 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5353 if (SvTHINKFIRST(sv) && !SvROK(sv))
5354 sv_force_normal(sv);
5360 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5362 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5363 PL_op_name[PL_op->op_type]);
5367 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5372 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5373 SvGROW(sv, len + 1);
5374 Move(s,SvPVX(sv),len,char);
5379 SvPOK_on(sv); /* validate pointer */
5381 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5382 PTR2UV(sv),SvPVX(sv)));
5389 Perl_sv_pvbyte(pTHX_ SV *sv)
5395 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5397 return sv_pvn(sv,lp);
5401 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5403 return sv_pvn_force(sv,lp);
5407 Perl_sv_pvutf8(pTHX_ SV *sv)
5409 sv_utf8_upgrade(sv);
5414 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5416 sv_utf8_upgrade(sv);
5417 return sv_pvn(sv,lp);
5421 =for apidoc sv_pvutf8n_force
5423 Get a sensible UTF8-encoded string out of the SV somehow. See
5430 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5432 sv_utf8_upgrade(sv);
5433 return sv_pvn_force(sv,lp);
5437 =for apidoc sv_reftype
5439 Returns a string describing what the SV is a reference to.
5445 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5447 if (ob && SvOBJECT(sv))
5448 return HvNAME(SvSTASH(sv));
5450 switch (SvTYPE(sv)) {
5464 case SVt_PVLV: return "LVALUE";
5465 case SVt_PVAV: return "ARRAY";
5466 case SVt_PVHV: return "HASH";
5467 case SVt_PVCV: return "CODE";
5468 case SVt_PVGV: return "GLOB";
5469 case SVt_PVFM: return "FORMAT";
5470 case SVt_PVIO: return "IO";
5471 default: return "UNKNOWN";
5477 =for apidoc sv_isobject
5479 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5480 object. If the SV is not an RV, or if the object is not blessed, then this
5487 Perl_sv_isobject(pTHX_ SV *sv)
5504 Returns a boolean indicating whether the SV is blessed into the specified
5505 class. This does not check for subtypes; use C<sv_derived_from> to verify
5506 an inheritance relationship.
5512 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5524 return strEQ(HvNAME(SvSTASH(sv)), name);
5530 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5531 it will be upgraded to one. If C<classname> is non-null then the new SV will
5532 be blessed in the specified package. The new SV is returned and its
5533 reference count is 1.
5539 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5546 SV_CHECK_THINKFIRST(rv);
5549 if (SvTYPE(rv) >= SVt_PVMG) {
5550 U32 refcnt = SvREFCNT(rv);
5554 SvREFCNT(rv) = refcnt;
5557 if (SvTYPE(rv) < SVt_RV)
5558 sv_upgrade(rv, SVt_RV);
5559 else if (SvTYPE(rv) > SVt_RV) {
5560 (void)SvOOK_off(rv);
5561 if (SvPVX(rv) && SvLEN(rv))
5562 Safefree(SvPVX(rv));
5572 HV* stash = gv_stashpv(classname, TRUE);
5573 (void)sv_bless(rv, stash);
5579 =for apidoc sv_setref_pv
5581 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5582 argument will be upgraded to an RV. That RV will be modified to point to
5583 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5584 into the SV. The C<classname> argument indicates the package for the
5585 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5586 will be returned and will have a reference count of 1.
5588 Do not use with other Perl types such as HV, AV, SV, CV, because those
5589 objects will become corrupted by the pointer copy process.
5591 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5597 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5600 sv_setsv(rv, &PL_sv_undef);
5604 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5609 =for apidoc sv_setref_iv
5611 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5612 argument will be upgraded to an RV. That RV will be modified to point to
5613 the new SV. The C<classname> argument indicates the package for the
5614 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5615 will be returned and will have a reference count of 1.
5621 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5623 sv_setiv(newSVrv(rv,classname), iv);
5628 =for apidoc sv_setref_nv
5630 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5631 argument will be upgraded to an RV. That RV will be modified to point to
5632 the new SV. The C<classname> argument indicates the package for the
5633 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5634 will be returned and will have a reference count of 1.
5640 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5642 sv_setnv(newSVrv(rv,classname), nv);
5647 =for apidoc sv_setref_pvn
5649 Copies a string into a new SV, optionally blessing the SV. The length of the
5650 string must be specified with C<n>. The C<rv> argument will be upgraded to
5651 an RV. That RV will be modified to point to the new SV. The C<classname>
5652 argument indicates the package for the blessing. Set C<classname> to
5653 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5654 a reference count of 1.
5656 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5662 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5664 sv_setpvn(newSVrv(rv,classname), pv, n);
5669 =for apidoc sv_bless
5671 Blesses an SV into a specified package. The SV must be an RV. The package
5672 must be designated by its stash (see C<gv_stashpv()>). The reference count
5673 of the SV is unaffected.
5679 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5684 Perl_croak(aTHX_ "Can't bless non-reference value");
5686 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5687 if (SvREADONLY(tmpRef))
5688 Perl_croak(aTHX_ PL_no_modify);
5689 if (SvOBJECT(tmpRef)) {
5690 if (SvTYPE(tmpRef) != SVt_PVIO)
5692 SvREFCNT_dec(SvSTASH(tmpRef));
5695 SvOBJECT_on(tmpRef);
5696 if (SvTYPE(tmpRef) != SVt_PVIO)
5698 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5699 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5710 S_sv_unglob(pTHX_ SV *sv)
5714 assert(SvTYPE(sv) == SVt_PVGV);
5719 SvREFCNT_dec(GvSTASH(sv));
5720 GvSTASH(sv) = Nullhv;
5722 sv_unmagic(sv, '*');
5723 Safefree(GvNAME(sv));
5726 /* need to keep SvANY(sv) in the right arena */
5727 xpvmg = new_XPVMG();
5728 StructCopy(SvANY(sv), xpvmg, XPVMG);
5729 del_XPVGV(SvANY(sv));
5732 SvFLAGS(sv) &= ~SVTYPEMASK;
5733 SvFLAGS(sv) |= SVt_PVMG;
5737 =for apidoc sv_unref
5739 Unsets the RV status of the SV, and decrements the reference count of
5740 whatever was being referenced by the RV. This can almost be thought of
5741 as a reversal of C<newSVrv>. See C<SvROK_off>.
5747 Perl_sv_unref(pTHX_ SV *sv)
5751 if (SvWEAKREF(sv)) {
5759 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5762 sv_2mortal(rv); /* Schedule for freeing later */
5766 Perl_sv_taint(pTHX_ SV *sv)
5768 sv_magic((sv), Nullsv, 't', Nullch, 0);
5772 Perl_sv_untaint(pTHX_ SV *sv)
5774 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5775 MAGIC *mg = mg_find(sv, 't');
5782 Perl_sv_tainted(pTHX_ SV *sv)
5784 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5785 MAGIC *mg = mg_find(sv, 't');
5786 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5793 =for apidoc sv_setpviv
5795 Copies an integer into the given SV, also updating its string value.
5796 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5802 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5804 char buf[TYPE_CHARS(UV)];
5806 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5808 sv_setpvn(sv, ptr, ebuf - ptr);
5813 =for apidoc sv_setpviv_mg
5815 Like C<sv_setpviv>, but also handles 'set' magic.
5821 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5823 char buf[TYPE_CHARS(UV)];
5825 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5827 sv_setpvn(sv, ptr, ebuf - ptr);
5831 #if defined(PERL_IMPLICIT_CONTEXT)
5833 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5837 va_start(args, pat);
5838 sv_vsetpvf(sv, pat, &args);
5844 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5848 va_start(args, pat);
5849 sv_vsetpvf_mg(sv, pat, &args);
5855 =for apidoc sv_setpvf
5857 Processes its arguments like C<sprintf> and sets an SV to the formatted
5858 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5864 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5867 va_start(args, pat);
5868 sv_vsetpvf(sv, pat, &args);
5873 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5875 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5879 =for apidoc sv_setpvf_mg
5881 Like C<sv_setpvf>, but also handles 'set' magic.
5887 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5890 va_start(args, pat);
5891 sv_vsetpvf_mg(sv, pat, &args);
5896 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5898 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5902 #if defined(PERL_IMPLICIT_CONTEXT)
5904 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5908 va_start(args, pat);
5909 sv_vcatpvf(sv, pat, &args);
5914 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5918 va_start(args, pat);
5919 sv_vcatpvf_mg(sv, pat, &args);
5925 =for apidoc sv_catpvf
5927 Processes its arguments like C<sprintf> and appends the formatted output
5928 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5929 typically be called after calling this function to handle 'set' magic.
5935 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5938 va_start(args, pat);
5939 sv_vcatpvf(sv, pat, &args);
5944 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5946 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5950 =for apidoc sv_catpvf_mg
5952 Like C<sv_catpvf>, but also handles 'set' magic.
5958 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5961 va_start(args, pat);
5962 sv_vcatpvf_mg(sv, pat, &args);
5967 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5969 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5974 =for apidoc sv_vsetpvfn
5976 Works like C<vcatpvfn> but copies the text into the SV instead of
5983 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5985 sv_setpvn(sv, "", 0);
5986 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5990 =for apidoc sv_vcatpvfn
5992 Processes its arguments like C<vsprintf> and appends the formatted output
5993 to an SV. Uses an array of SVs if the C style variable argument list is
5994 missing (NULL). When running with taint checks enabled, indicates via
5995 C<maybe_tainted> if results are untrustworthy (often due to the use of
6002 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6010 static char nullstr[] = "(null)";
6013 /* no matter what, this is a string now */
6014 (void)SvPV_force(sv, origlen);
6016 /* special-case "", "%s", and "%_" */
6019 if (patlen == 2 && pat[0] == '%') {
6023 char *s = va_arg(*args, char*);
6024 sv_catpv(sv, s ? s : nullstr);
6026 else if (svix < svmax) {
6027 sv_catsv(sv, *svargs);
6028 if (DO_UTF8(*svargs))
6034 argsv = va_arg(*args, SV*);
6035 sv_catsv(sv, argsv);
6040 /* See comment on '_' below */
6045 patend = (char*)pat + patlen;
6046 for (p = (char*)pat; p < patend; p = q) {
6049 bool vectorize = FALSE;
6056 bool has_precis = FALSE;
6058 bool is_utf = FALSE;
6061 U8 utf8buf[UTF8_MAXLEN];
6062 STRLEN esignlen = 0;
6064 char *eptr = Nullch;
6066 /* Times 4: a decimal digit takes more than 3 binary digits.
6067 * NV_DIG: mantissa takes than many decimal digits.
6068 * Plus 32: Playing safe. */
6069 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6070 /* large enough for "%#.#f" --chip */
6071 /* what about long double NVs? --jhi */
6074 U8 *vecstr = Null(U8*);
6086 STRLEN dotstrlen = 1;
6087 I32 epix = 0; /* explicit parameter index */
6088 I32 ewix = 0; /* explicit width index */
6089 bool asterisk = FALSE;
6091 for (q = p; q < patend && *q != '%'; ++q) ;
6093 sv_catpvn(sv, p, q - p);
6122 case '*': /* printf("%*vX",":",$ipv6addr) */
6127 vecsv = va_arg(*args, SV*);
6128 else if (svix < svmax)
6129 vecsv = svargs[svix++];
6132 dotstr = SvPVx(vecsv,dotstrlen);
6160 case '1': case '2': case '3':
6161 case '4': case '5': case '6':
6162 case '7': case '8': case '9':
6165 width = width * 10 + (*q++ - '0');
6167 if (asterisk && ewix == 0) {
6172 } else if (epix == 0) {
6184 i = va_arg(*args, int);
6186 i = (ewix ? ewix <= svmax : svix < svmax) ?
6187 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6189 width = (i < 0) ? -i : i;
6198 i = va_arg(*args, int);
6200 i = (ewix ? ewix <= svmax : svix < svmax)
6201 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6202 precis = (i < 0) ? 0 : i;
6208 precis = precis * 10 + (*q++ - '0');
6215 vecsv = va_arg(*args, SV*);
6216 vecstr = (U8*)SvPVx(vecsv,veclen);
6217 utf = DO_UTF8(vecsv);
6219 else if (epix ? epix <= svmax : svix < svmax) {
6220 vecsv = svargs[epix ? epix-1 : svix++];
6221 vecstr = (U8*)SvPVx(vecsv,veclen);
6222 utf = DO_UTF8(vecsv);
6233 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6244 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6245 if (*(q + 1) == 'l') { /* lld, llf */
6272 uv = va_arg(*args, int);
6274 uv = (epix ? epix <= svmax : svix < svmax) ?
6275 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6276 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6277 eptr = (char*)utf8buf;
6278 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6290 eptr = va_arg(*args, char*);
6292 #ifdef MACOS_TRADITIONAL
6293 /* On MacOS, %#s format is used for Pascal strings */
6298 elen = strlen(eptr);
6301 elen = sizeof nullstr - 1;
6304 else if (epix ? epix <= svmax : svix < svmax) {
6305 argsv = svargs[epix ? epix-1 : svix++];
6306 eptr = SvPVx(argsv, elen);
6307 if (DO_UTF8(argsv)) {
6308 if (has_precis && precis < elen) {
6310 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6313 if (width) { /* fudge width (can't fudge elen) */
6314 width += elen - sv_len_utf8(argsv);
6323 * The "%_" hack might have to be changed someday,
6324 * if ISO or ANSI decide to use '_' for something.
6325 * So we keep it hidden from users' code.
6329 argsv = va_arg(*args,SV*);
6330 eptr = SvPVx(argsv, elen);
6336 if (has_precis && elen > precis)
6346 uv = PTR2UV(va_arg(*args, void*));
6348 uv = (epix ? epix <= svmax : svix < svmax) ?
6349 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6369 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6379 case 'h': iv = (short)va_arg(*args, int); break;
6380 default: iv = va_arg(*args, int); break;
6381 case 'l': iv = va_arg(*args, long); break;
6382 case 'V': iv = va_arg(*args, IV); break;
6384 case 'q': iv = va_arg(*args, Quad_t); break;
6389 iv = (epix ? epix <= svmax : svix < svmax) ?
6390 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6392 case 'h': iv = (short)iv; break;
6394 case 'l': iv = (long)iv; break;
6397 case 'q': iv = (Quad_t)iv; break;
6404 esignbuf[esignlen++] = plus;
6408 esignbuf[esignlen++] = '-';
6452 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6462 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6463 default: uv = va_arg(*args, unsigned); break;
6464 case 'l': uv = va_arg(*args, unsigned long); break;
6465 case 'V': uv = va_arg(*args, UV); break;
6467 case 'q': uv = va_arg(*args, Quad_t); break;
6472 uv = (epix ? epix <= svmax : svix < svmax) ?
6473 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6475 case 'h': uv = (unsigned short)uv; break;
6477 case 'l': uv = (unsigned long)uv; break;
6480 case 'q': uv = (Quad_t)uv; break;
6486 eptr = ebuf + sizeof ebuf;
6492 p = (char*)((c == 'X')
6493 ? "0123456789ABCDEF" : "0123456789abcdef");
6499 esignbuf[esignlen++] = '0';
6500 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6506 *--eptr = '0' + dig;
6508 if (alt && *eptr != '0')
6514 *--eptr = '0' + dig;
6517 esignbuf[esignlen++] = '0';
6518 esignbuf[esignlen++] = 'b';
6521 default: /* it had better be ten or less */
6522 #if defined(PERL_Y2KWARN)
6523 if (ckWARN(WARN_Y2K)) {
6525 char *s = SvPV(sv,n);
6526 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6527 && (n == 2 || !isDIGIT(s[n-3])))
6529 Perl_warner(aTHX_ WARN_Y2K,
6530 "Possible Y2K bug: %%%c %s",
6531 c, "format string following '19'");
6537 *--eptr = '0' + dig;
6538 } while (uv /= base);
6541 elen = (ebuf + sizeof ebuf) - eptr;
6544 zeros = precis - elen;
6545 else if (precis == 0 && elen == 1 && *eptr == '0')
6550 /* FLOATING POINT */
6553 c = 'f'; /* maybe %F isn't supported here */
6559 /* This is evil, but floating point is even more evil */
6563 nv = va_arg(*args, NV);
6565 nv = (epix ? epix <= svmax : svix < svmax) ?
6566 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6569 if (c != 'e' && c != 'E') {
6571 (void)Perl_frexp(nv, &i);
6572 if (i == PERL_INT_MIN)
6573 Perl_die(aTHX_ "panic: frexp");
6575 need = BIT_DIGITS(i);
6577 need += has_precis ? precis : 6; /* known default */
6581 need += 20; /* fudge factor */
6582 if (PL_efloatsize < need) {
6583 Safefree(PL_efloatbuf);
6584 PL_efloatsize = need + 20; /* more fudge */
6585 New(906, PL_efloatbuf, PL_efloatsize, char);
6586 PL_efloatbuf[0] = '\0';
6589 eptr = ebuf + sizeof ebuf;
6592 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6594 /* Copy the one or more characters in a long double
6595 * format before the 'base' ([efgEFG]) character to
6596 * the format string. */
6597 static char const prifldbl[] = PERL_PRIfldbl;
6598 char const *p = prifldbl + sizeof(prifldbl) - 3;
6599 while (p >= prifldbl) { *--eptr = *p--; }
6604 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6609 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6621 (void)sprintf(PL_efloatbuf, eptr, nv);
6623 eptr = PL_efloatbuf;
6624 elen = strlen(PL_efloatbuf);
6631 i = SvCUR(sv) - origlen;
6634 case 'h': *(va_arg(*args, short*)) = i; break;
6635 default: *(va_arg(*args, int*)) = i; break;
6636 case 'l': *(va_arg(*args, long*)) = i; break;
6637 case 'V': *(va_arg(*args, IV*)) = i; break;
6639 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6643 else if (epix ? epix <= svmax : svix < svmax)
6644 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6645 continue; /* not "break" */
6652 if (!args && ckWARN(WARN_PRINTF) &&
6653 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6654 SV *msg = sv_newmortal();
6655 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6656 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6659 Perl_sv_catpvf(aTHX_ msg,
6660 "\"%%%c\"", c & 0xFF);
6662 Perl_sv_catpvf(aTHX_ msg,
6663 "\"%%\\%03"UVof"\"",
6666 sv_catpv(msg, "end of string");
6667 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6670 /* output mangled stuff ... */
6676 /* ... right here, because formatting flags should not apply */
6677 SvGROW(sv, SvCUR(sv) + elen + 1);
6679 memcpy(p, eptr, elen);
6682 SvCUR(sv) = p - SvPVX(sv);
6683 continue; /* not "break" */
6686 have = esignlen + zeros + elen;
6687 need = (have > width ? have : width);
6690 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6692 if (esignlen && fill == '0') {
6693 for (i = 0; i < esignlen; i++)
6697 memset(p, fill, gap);
6700 if (esignlen && fill != '0') {
6701 for (i = 0; i < esignlen; i++)
6705 for (i = zeros; i; i--)
6709 memcpy(p, eptr, elen);
6713 memset(p, ' ', gap);
6718 memcpy(p, dotstr, dotstrlen);
6722 vectorize = FALSE; /* done iterating over vecstr */
6727 SvCUR(sv) = p - SvPVX(sv);
6735 #if defined(USE_ITHREADS)
6737 #if defined(USE_THREADS)
6738 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6741 #ifndef GpREFCNT_inc
6742 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6746 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6747 #define av_dup(s) (AV*)sv_dup((SV*)s)
6748 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6749 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6750 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6751 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6752 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6753 #define io_dup(s) (IO*)sv_dup((SV*)s)
6754 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6755 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6756 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6757 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6758 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6761 Perl_re_dup(pTHX_ REGEXP *r)
6763 /* XXX fix when pmop->op_pmregexp becomes shared */
6764 return ReREFCNT_inc(r);
6768 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6772 return (PerlIO*)NULL;
6774 /* look for it in the table first */
6775 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6779 /* create anew and remember what it is */
6780 ret = PerlIO_fdupopen(fp);
6781 ptr_table_store(PL_ptr_table, fp, ret);
6786 Perl_dirp_dup(pTHX_ DIR *dp)
6795 Perl_gp_dup(pTHX_ GP *gp)
6800 /* look for it in the table first */
6801 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6805 /* create anew and remember what it is */
6806 Newz(0, ret, 1, GP);
6807 ptr_table_store(PL_ptr_table, gp, ret);
6810 ret->gp_refcnt = 0; /* must be before any other dups! */
6811 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6812 ret->gp_io = io_dup_inc(gp->gp_io);
6813 ret->gp_form = cv_dup_inc(gp->gp_form);
6814 ret->gp_av = av_dup_inc(gp->gp_av);
6815 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6816 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6817 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6818 ret->gp_cvgen = gp->gp_cvgen;
6819 ret->gp_flags = gp->gp_flags;
6820 ret->gp_line = gp->gp_line;
6821 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6826 Perl_mg_dup(pTHX_ MAGIC *mg)
6828 MAGIC *mgret = (MAGIC*)NULL;
6831 return (MAGIC*)NULL;
6832 /* look for it in the table first */
6833 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6837 for (; mg; mg = mg->mg_moremagic) {
6839 Newz(0, nmg, 1, MAGIC);
6843 mgprev->mg_moremagic = nmg;
6844 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6845 nmg->mg_private = mg->mg_private;
6846 nmg->mg_type = mg->mg_type;
6847 nmg->mg_flags = mg->mg_flags;
6848 if (mg->mg_type == 'r') {
6849 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6852 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6853 ? sv_dup_inc(mg->mg_obj)
6854 : sv_dup(mg->mg_obj);
6856 nmg->mg_len = mg->mg_len;
6857 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6858 if (mg->mg_ptr && mg->mg_type != 'g') {
6859 if (mg->mg_len >= 0) {
6860 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6861 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6862 AMT *amtp = (AMT*)mg->mg_ptr;
6863 AMT *namtp = (AMT*)nmg->mg_ptr;
6865 for (i = 1; i < NofAMmeth; i++) {
6866 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6870 else if (mg->mg_len == HEf_SVKEY)
6871 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6879 Perl_ptr_table_new(pTHX)
6882 Newz(0, tbl, 1, PTR_TBL_t);
6885 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6890 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6892 PTR_TBL_ENT_t *tblent;
6893 UV hash = PTR2UV(sv);
6895 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6896 for (; tblent; tblent = tblent->next) {
6897 if (tblent->oldval == sv)
6898 return tblent->newval;
6904 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6906 PTR_TBL_ENT_t *tblent, **otblent;
6907 /* XXX this may be pessimal on platforms where pointers aren't good
6908 * hash values e.g. if they grow faster in the most significant
6910 UV hash = PTR2UV(oldv);
6914 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6915 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6916 if (tblent->oldval == oldv) {
6917 tblent->newval = newv;
6922 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6923 tblent->oldval = oldv;
6924 tblent->newval = newv;
6925 tblent->next = *otblent;
6928 if (i && tbl->tbl_items > tbl->tbl_max)
6929 ptr_table_split(tbl);
6933 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6935 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6936 UV oldsize = tbl->tbl_max + 1;
6937 UV newsize = oldsize * 2;
6940 Renew(ary, newsize, PTR_TBL_ENT_t*);
6941 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6942 tbl->tbl_max = --newsize;
6944 for (i=0; i < oldsize; i++, ary++) {
6945 PTR_TBL_ENT_t **curentp, **entp, *ent;
6948 curentp = ary + oldsize;
6949 for (entp = ary, ent = *ary; ent; ent = *entp) {
6950 if ((newsize & PTR2UV(ent->oldval)) != i) {
6952 ent->next = *curentp;
6967 Perl_sv_dup(pTHX_ SV *sstr)
6971 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6973 /* look for it in the table first */
6974 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6978 /* create anew and remember what it is */
6980 ptr_table_store(PL_ptr_table, sstr, dstr);
6983 SvFLAGS(dstr) = SvFLAGS(sstr);
6984 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6985 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6988 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6989 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6990 PL_watch_pvx, SvPVX(sstr));
6993 switch (SvTYPE(sstr)) {
6998 SvANY(dstr) = new_XIV();
6999 SvIVX(dstr) = SvIVX(sstr);
7002 SvANY(dstr) = new_XNV();
7003 SvNVX(dstr) = SvNVX(sstr);
7006 SvANY(dstr) = new_XRV();
7007 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7010 SvANY(dstr) = new_XPV();
7011 SvCUR(dstr) = SvCUR(sstr);
7012 SvLEN(dstr) = SvLEN(sstr);
7014 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7015 else if (SvPVX(sstr) && SvLEN(sstr))
7016 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7018 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7021 SvANY(dstr) = new_XPVIV();
7022 SvCUR(dstr) = SvCUR(sstr);
7023 SvLEN(dstr) = SvLEN(sstr);
7024 SvIVX(dstr) = SvIVX(sstr);
7026 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7027 else if (SvPVX(sstr) && SvLEN(sstr))
7028 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7030 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7033 SvANY(dstr) = new_XPVNV();
7034 SvCUR(dstr) = SvCUR(sstr);
7035 SvLEN(dstr) = SvLEN(sstr);
7036 SvIVX(dstr) = SvIVX(sstr);
7037 SvNVX(dstr) = SvNVX(sstr);
7039 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7040 else if (SvPVX(sstr) && SvLEN(sstr))
7041 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7043 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7046 SvANY(dstr) = new_XPVMG();
7047 SvCUR(dstr) = SvCUR(sstr);
7048 SvLEN(dstr) = SvLEN(sstr);
7049 SvIVX(dstr) = SvIVX(sstr);
7050 SvNVX(dstr) = SvNVX(sstr);
7051 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7052 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7054 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7055 else if (SvPVX(sstr) && SvLEN(sstr))
7056 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7058 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7061 SvANY(dstr) = new_XPVBM();
7062 SvCUR(dstr) = SvCUR(sstr);
7063 SvLEN(dstr) = SvLEN(sstr);
7064 SvIVX(dstr) = SvIVX(sstr);
7065 SvNVX(dstr) = SvNVX(sstr);
7066 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7067 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7069 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7070 else if (SvPVX(sstr) && SvLEN(sstr))
7071 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7073 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7074 BmRARE(dstr) = BmRARE(sstr);
7075 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7076 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7079 SvANY(dstr) = new_XPVLV();
7080 SvCUR(dstr) = SvCUR(sstr);
7081 SvLEN(dstr) = SvLEN(sstr);
7082 SvIVX(dstr) = SvIVX(sstr);
7083 SvNVX(dstr) = SvNVX(sstr);
7084 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7085 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7087 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7088 else if (SvPVX(sstr) && SvLEN(sstr))
7089 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7091 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7092 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7093 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7094 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7095 LvTYPE(dstr) = LvTYPE(sstr);
7098 SvANY(dstr) = new_XPVGV();
7099 SvCUR(dstr) = SvCUR(sstr);
7100 SvLEN(dstr) = SvLEN(sstr);
7101 SvIVX(dstr) = SvIVX(sstr);
7102 SvNVX(dstr) = SvNVX(sstr);
7103 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7104 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7106 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7107 else if (SvPVX(sstr) && SvLEN(sstr))
7108 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7110 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7111 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7112 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7113 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7114 GvFLAGS(dstr) = GvFLAGS(sstr);
7115 GvGP(dstr) = gp_dup(GvGP(sstr));
7116 (void)GpREFCNT_inc(GvGP(dstr));
7119 SvANY(dstr) = new_XPVIO();
7120 SvCUR(dstr) = SvCUR(sstr);
7121 SvLEN(dstr) = SvLEN(sstr);
7122 SvIVX(dstr) = SvIVX(sstr);
7123 SvNVX(dstr) = SvNVX(sstr);
7124 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7125 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7127 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7128 else if (SvPVX(sstr) && SvLEN(sstr))
7129 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7131 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7132 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7133 if (IoOFP(sstr) == IoIFP(sstr))
7134 IoOFP(dstr) = IoIFP(dstr);
7136 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7137 /* PL_rsfp_filters entries have fake IoDIRP() */
7138 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7139 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7141 IoDIRP(dstr) = IoDIRP(sstr);
7142 IoLINES(dstr) = IoLINES(sstr);
7143 IoPAGE(dstr) = IoPAGE(sstr);
7144 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7145 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7146 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7147 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7148 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7149 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7150 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7151 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7152 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7153 IoTYPE(dstr) = IoTYPE(sstr);
7154 IoFLAGS(dstr) = IoFLAGS(sstr);
7157 SvANY(dstr) = new_XPVAV();
7158 SvCUR(dstr) = SvCUR(sstr);
7159 SvLEN(dstr) = SvLEN(sstr);
7160 SvIVX(dstr) = SvIVX(sstr);
7161 SvNVX(dstr) = SvNVX(sstr);
7162 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7163 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7164 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7165 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7166 if (AvARRAY((AV*)sstr)) {
7167 SV **dst_ary, **src_ary;
7168 SSize_t items = AvFILLp((AV*)sstr) + 1;
7170 src_ary = AvARRAY((AV*)sstr);
7171 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7172 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7173 SvPVX(dstr) = (char*)dst_ary;
7174 AvALLOC((AV*)dstr) = dst_ary;
7175 if (AvREAL((AV*)sstr)) {
7177 *dst_ary++ = sv_dup_inc(*src_ary++);
7181 *dst_ary++ = sv_dup(*src_ary++);
7183 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7184 while (items-- > 0) {
7185 *dst_ary++ = &PL_sv_undef;
7189 SvPVX(dstr) = Nullch;
7190 AvALLOC((AV*)dstr) = (SV**)NULL;
7194 SvANY(dstr) = new_XPVHV();
7195 SvCUR(dstr) = SvCUR(sstr);
7196 SvLEN(dstr) = SvLEN(sstr);
7197 SvIVX(dstr) = SvIVX(sstr);
7198 SvNVX(dstr) = SvNVX(sstr);
7199 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7200 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7201 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7202 if (HvARRAY((HV*)sstr)) {
7204 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7205 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7206 Newz(0, dxhv->xhv_array,
7207 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7208 while (i <= sxhv->xhv_max) {
7209 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7210 !!HvSHAREKEYS(sstr));
7213 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7216 SvPVX(dstr) = Nullch;
7217 HvEITER((HV*)dstr) = (HE*)NULL;
7219 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7220 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7223 SvANY(dstr) = new_XPVFM();
7224 FmLINES(dstr) = FmLINES(sstr);
7228 SvANY(dstr) = new_XPVCV();
7230 SvCUR(dstr) = SvCUR(sstr);
7231 SvLEN(dstr) = SvLEN(sstr);
7232 SvIVX(dstr) = SvIVX(sstr);
7233 SvNVX(dstr) = SvNVX(sstr);
7234 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7235 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7236 if (SvPVX(sstr) && SvLEN(sstr))
7237 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7239 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7240 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7241 CvSTART(dstr) = CvSTART(sstr);
7242 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7243 CvXSUB(dstr) = CvXSUB(sstr);
7244 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7245 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7246 CvDEPTH(dstr) = CvDEPTH(sstr);
7247 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7248 /* XXX padlists are real, but pretend to be not */
7249 AvREAL_on(CvPADLIST(sstr));
7250 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7251 AvREAL_off(CvPADLIST(sstr));
7252 AvREAL_off(CvPADLIST(dstr));
7255 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7256 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7257 CvFLAGS(dstr) = CvFLAGS(sstr);
7260 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7264 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7271 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7276 return (PERL_CONTEXT*)NULL;
7278 /* look for it in the table first */
7279 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7283 /* create anew and remember what it is */
7284 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7285 ptr_table_store(PL_ptr_table, cxs, ncxs);
7288 PERL_CONTEXT *cx = &cxs[ix];
7289 PERL_CONTEXT *ncx = &ncxs[ix];
7290 ncx->cx_type = cx->cx_type;
7291 if (CxTYPE(cx) == CXt_SUBST) {
7292 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7295 ncx->blk_oldsp = cx->blk_oldsp;
7296 ncx->blk_oldcop = cx->blk_oldcop;
7297 ncx->blk_oldretsp = cx->blk_oldretsp;
7298 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7299 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7300 ncx->blk_oldpm = cx->blk_oldpm;
7301 ncx->blk_gimme = cx->blk_gimme;
7302 switch (CxTYPE(cx)) {
7304 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7305 ? cv_dup_inc(cx->blk_sub.cv)
7306 : cv_dup(cx->blk_sub.cv));
7307 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7308 ? av_dup_inc(cx->blk_sub.argarray)
7310 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7311 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7312 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7313 ncx->blk_sub.lval = cx->blk_sub.lval;
7316 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7317 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7318 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7319 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7320 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7323 ncx->blk_loop.label = cx->blk_loop.label;
7324 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7325 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7326 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7327 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7328 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7329 ? cx->blk_loop.iterdata
7330 : gv_dup((GV*)cx->blk_loop.iterdata));
7331 ncx->blk_loop.oldcurpad
7332 = (SV**)ptr_table_fetch(PL_ptr_table,
7333 cx->blk_loop.oldcurpad);
7334 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7335 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7336 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7337 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7338 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7341 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7342 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7343 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7344 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7357 Perl_si_dup(pTHX_ PERL_SI *si)
7362 return (PERL_SI*)NULL;
7364 /* look for it in the table first */
7365 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7369 /* create anew and remember what it is */
7370 Newz(56, nsi, 1, PERL_SI);
7371 ptr_table_store(PL_ptr_table, si, nsi);
7373 nsi->si_stack = av_dup_inc(si->si_stack);
7374 nsi->si_cxix = si->si_cxix;
7375 nsi->si_cxmax = si->si_cxmax;
7376 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7377 nsi->si_type = si->si_type;
7378 nsi->si_prev = si_dup(si->si_prev);
7379 nsi->si_next = si_dup(si->si_next);
7380 nsi->si_markoff = si->si_markoff;
7385 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7386 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7387 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7388 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7389 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7390 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7391 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7392 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7393 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7394 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7395 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7396 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7399 #define pv_dup_inc(p) SAVEPV(p)
7400 #define pv_dup(p) SAVEPV(p)
7401 #define svp_dup_inc(p,pp) any_dup(p,pp)
7404 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7411 /* look for it in the table first */
7412 ret = ptr_table_fetch(PL_ptr_table, v);
7416 /* see if it is part of the interpreter structure */
7417 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7418 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7426 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7428 ANY *ss = proto_perl->Tsavestack;
7429 I32 ix = proto_perl->Tsavestack_ix;
7430 I32 max = proto_perl->Tsavestack_max;
7443 void (*dptr) (void*);
7444 void (*dxptr) (pTHXo_ void*);
7447 Newz(54, nss, max, ANY);
7453 case SAVEt_ITEM: /* normal string */
7454 sv = (SV*)POPPTR(ss,ix);
7455 TOPPTR(nss,ix) = sv_dup_inc(sv);
7456 sv = (SV*)POPPTR(ss,ix);
7457 TOPPTR(nss,ix) = sv_dup_inc(sv);
7459 case SAVEt_SV: /* scalar reference */
7460 sv = (SV*)POPPTR(ss,ix);
7461 TOPPTR(nss,ix) = sv_dup_inc(sv);
7462 gv = (GV*)POPPTR(ss,ix);
7463 TOPPTR(nss,ix) = gv_dup_inc(gv);
7465 case SAVEt_GENERIC_PVREF: /* generic char* */
7466 c = (char*)POPPTR(ss,ix);
7467 TOPPTR(nss,ix) = pv_dup(c);
7468 ptr = POPPTR(ss,ix);
7469 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7471 case SAVEt_GENERIC_SVREF: /* generic sv */
7472 case SAVEt_SVREF: /* scalar reference */
7473 sv = (SV*)POPPTR(ss,ix);
7474 TOPPTR(nss,ix) = sv_dup_inc(sv);
7475 ptr = POPPTR(ss,ix);
7476 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7478 case SAVEt_AV: /* array reference */
7479 av = (AV*)POPPTR(ss,ix);
7480 TOPPTR(nss,ix) = av_dup_inc(av);
7481 gv = (GV*)POPPTR(ss,ix);
7482 TOPPTR(nss,ix) = gv_dup(gv);
7484 case SAVEt_HV: /* hash reference */
7485 hv = (HV*)POPPTR(ss,ix);
7486 TOPPTR(nss,ix) = hv_dup_inc(hv);
7487 gv = (GV*)POPPTR(ss,ix);
7488 TOPPTR(nss,ix) = gv_dup(gv);
7490 case SAVEt_INT: /* int reference */
7491 ptr = POPPTR(ss,ix);
7492 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7493 intval = (int)POPINT(ss,ix);
7494 TOPINT(nss,ix) = intval;
7496 case SAVEt_LONG: /* long reference */
7497 ptr = POPPTR(ss,ix);
7498 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7499 longval = (long)POPLONG(ss,ix);
7500 TOPLONG(nss,ix) = longval;
7502 case SAVEt_I32: /* I32 reference */
7503 case SAVEt_I16: /* I16 reference */
7504 case SAVEt_I8: /* I8 reference */
7505 ptr = POPPTR(ss,ix);
7506 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7510 case SAVEt_IV: /* IV reference */
7511 ptr = POPPTR(ss,ix);
7512 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7516 case SAVEt_SPTR: /* SV* reference */
7517 ptr = POPPTR(ss,ix);
7518 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7519 sv = (SV*)POPPTR(ss,ix);
7520 TOPPTR(nss,ix) = sv_dup(sv);
7522 case SAVEt_VPTR: /* random* reference */
7523 ptr = POPPTR(ss,ix);
7524 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7525 ptr = POPPTR(ss,ix);
7526 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7528 case SAVEt_PPTR: /* char* reference */
7529 ptr = POPPTR(ss,ix);
7530 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7531 c = (char*)POPPTR(ss,ix);
7532 TOPPTR(nss,ix) = pv_dup(c);
7534 case SAVEt_HPTR: /* HV* reference */
7535 ptr = POPPTR(ss,ix);
7536 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7537 hv = (HV*)POPPTR(ss,ix);
7538 TOPPTR(nss,ix) = hv_dup(hv);
7540 case SAVEt_APTR: /* AV* reference */
7541 ptr = POPPTR(ss,ix);
7542 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7543 av = (AV*)POPPTR(ss,ix);
7544 TOPPTR(nss,ix) = av_dup(av);
7547 gv = (GV*)POPPTR(ss,ix);
7548 TOPPTR(nss,ix) = gv_dup(gv);
7550 case SAVEt_GP: /* scalar reference */
7551 gp = (GP*)POPPTR(ss,ix);
7552 TOPPTR(nss,ix) = gp = gp_dup(gp);
7553 (void)GpREFCNT_inc(gp);
7554 gv = (GV*)POPPTR(ss,ix);
7555 TOPPTR(nss,ix) = gv_dup_inc(c);
7556 c = (char*)POPPTR(ss,ix);
7557 TOPPTR(nss,ix) = pv_dup(c);
7564 sv = (SV*)POPPTR(ss,ix);
7565 TOPPTR(nss,ix) = sv_dup_inc(sv);
7568 ptr = POPPTR(ss,ix);
7569 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7570 /* these are assumed to be refcounted properly */
7571 switch (((OP*)ptr)->op_type) {
7578 TOPPTR(nss,ix) = ptr;
7583 TOPPTR(nss,ix) = Nullop;
7588 TOPPTR(nss,ix) = Nullop;
7591 c = (char*)POPPTR(ss,ix);
7592 TOPPTR(nss,ix) = pv_dup_inc(c);
7595 longval = POPLONG(ss,ix);
7596 TOPLONG(nss,ix) = longval;
7599 hv = (HV*)POPPTR(ss,ix);
7600 TOPPTR(nss,ix) = hv_dup_inc(hv);
7601 c = (char*)POPPTR(ss,ix);
7602 TOPPTR(nss,ix) = pv_dup_inc(c);
7606 case SAVEt_DESTRUCTOR:
7607 ptr = POPPTR(ss,ix);
7608 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7609 dptr = POPDPTR(ss,ix);
7610 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7612 case SAVEt_DESTRUCTOR_X:
7613 ptr = POPPTR(ss,ix);
7614 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7615 dxptr = POPDXPTR(ss,ix);
7616 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7618 case SAVEt_REGCONTEXT:
7624 case SAVEt_STACK_POS: /* Position on Perl stack */
7628 case SAVEt_AELEM: /* array element */
7629 sv = (SV*)POPPTR(ss,ix);
7630 TOPPTR(nss,ix) = sv_dup_inc(sv);
7633 av = (AV*)POPPTR(ss,ix);
7634 TOPPTR(nss,ix) = av_dup_inc(av);
7636 case SAVEt_HELEM: /* hash element */
7637 sv = (SV*)POPPTR(ss,ix);
7638 TOPPTR(nss,ix) = sv_dup_inc(sv);
7639 sv = (SV*)POPPTR(ss,ix);
7640 TOPPTR(nss,ix) = sv_dup_inc(sv);
7641 hv = (HV*)POPPTR(ss,ix);
7642 TOPPTR(nss,ix) = hv_dup_inc(hv);
7645 ptr = POPPTR(ss,ix);
7646 TOPPTR(nss,ix) = ptr;
7653 av = (AV*)POPPTR(ss,ix);
7654 TOPPTR(nss,ix) = av_dup(av);
7657 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7669 perl_clone(PerlInterpreter *proto_perl, UV flags)
7672 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7675 #ifdef PERL_IMPLICIT_SYS
7676 return perl_clone_using(proto_perl, flags,
7678 proto_perl->IMemShared,
7679 proto_perl->IMemParse,
7689 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7690 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7691 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7692 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7693 struct IPerlDir* ipD, struct IPerlSock* ipS,
7694 struct IPerlProc* ipP)
7696 /* XXX many of the string copies here can be optimized if they're
7697 * constants; they need to be allocated as common memory and just
7698 * their pointers copied. */
7702 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7704 PERL_SET_THX(pPerl);
7705 # else /* !PERL_OBJECT */
7706 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7707 PERL_SET_THX(my_perl);
7710 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7715 # else /* !DEBUGGING */
7716 Zero(my_perl, 1, PerlInterpreter);
7717 # endif /* DEBUGGING */
7721 PL_MemShared = ipMS;
7729 # endif /* PERL_OBJECT */
7730 #else /* !PERL_IMPLICIT_SYS */
7732 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7733 PERL_SET_THX(my_perl);
7736 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7741 # else /* !DEBUGGING */
7742 Zero(my_perl, 1, PerlInterpreter);
7743 # endif /* DEBUGGING */
7744 #endif /* PERL_IMPLICIT_SYS */
7747 PL_xiv_arenaroot = NULL;
7749 PL_xnv_arenaroot = NULL;
7751 PL_xrv_arenaroot = NULL;
7753 PL_xpv_arenaroot = NULL;
7755 PL_xpviv_arenaroot = NULL;
7756 PL_xpviv_root = NULL;
7757 PL_xpvnv_arenaroot = NULL;
7758 PL_xpvnv_root = NULL;
7759 PL_xpvcv_arenaroot = NULL;
7760 PL_xpvcv_root = NULL;
7761 PL_xpvav_arenaroot = NULL;
7762 PL_xpvav_root = NULL;
7763 PL_xpvhv_arenaroot = NULL;
7764 PL_xpvhv_root = NULL;
7765 PL_xpvmg_arenaroot = NULL;
7766 PL_xpvmg_root = NULL;
7767 PL_xpvlv_arenaroot = NULL;
7768 PL_xpvlv_root = NULL;
7769 PL_xpvbm_arenaroot = NULL;
7770 PL_xpvbm_root = NULL;
7771 PL_he_arenaroot = NULL;
7773 PL_nice_chunk = NULL;
7774 PL_nice_chunk_size = 0;
7777 PL_sv_root = Nullsv;
7778 PL_sv_arenaroot = Nullsv;
7780 PL_debug = proto_perl->Idebug;
7782 /* create SV map for pointer relocation */
7783 PL_ptr_table = ptr_table_new();
7785 /* initialize these special pointers as early as possible */
7786 SvANY(&PL_sv_undef) = NULL;
7787 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7788 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7789 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7792 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7794 SvANY(&PL_sv_no) = new_XPVNV();
7796 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7797 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7798 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7799 SvCUR(&PL_sv_no) = 0;
7800 SvLEN(&PL_sv_no) = 1;
7801 SvNVX(&PL_sv_no) = 0;
7802 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7805 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7807 SvANY(&PL_sv_yes) = new_XPVNV();
7809 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7810 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7811 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7812 SvCUR(&PL_sv_yes) = 1;
7813 SvLEN(&PL_sv_yes) = 2;
7814 SvNVX(&PL_sv_yes) = 1;
7815 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7817 /* create shared string table */
7818 PL_strtab = newHV();
7819 HvSHAREKEYS_off(PL_strtab);
7820 hv_ksplit(PL_strtab, 512);
7821 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7823 PL_compiling = proto_perl->Icompiling;
7824 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7825 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7826 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7827 if (!specialWARN(PL_compiling.cop_warnings))
7828 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7829 if (!specialCopIO(PL_compiling.cop_io))
7830 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
7831 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7833 /* pseudo environmental stuff */
7834 PL_origargc = proto_perl->Iorigargc;
7836 New(0, PL_origargv, i+1, char*);
7837 PL_origargv[i] = '\0';
7839 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7841 PL_envgv = gv_dup(proto_perl->Ienvgv);
7842 PL_incgv = gv_dup(proto_perl->Iincgv);
7843 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7844 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7845 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7846 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7849 PL_minus_c = proto_perl->Iminus_c;
7850 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7851 PL_localpatches = proto_perl->Ilocalpatches;
7852 PL_splitstr = proto_perl->Isplitstr;
7853 PL_preprocess = proto_perl->Ipreprocess;
7854 PL_minus_n = proto_perl->Iminus_n;
7855 PL_minus_p = proto_perl->Iminus_p;
7856 PL_minus_l = proto_perl->Iminus_l;
7857 PL_minus_a = proto_perl->Iminus_a;
7858 PL_minus_F = proto_perl->Iminus_F;
7859 PL_doswitches = proto_perl->Idoswitches;
7860 PL_dowarn = proto_perl->Idowarn;
7861 PL_doextract = proto_perl->Idoextract;
7862 PL_sawampersand = proto_perl->Isawampersand;
7863 PL_unsafe = proto_perl->Iunsafe;
7864 PL_inplace = SAVEPV(proto_perl->Iinplace);
7865 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7866 PL_perldb = proto_perl->Iperldb;
7867 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7869 /* magical thingies */
7870 /* XXX time(&PL_basetime) when asked for? */
7871 PL_basetime = proto_perl->Ibasetime;
7872 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7874 PL_maxsysfd = proto_perl->Imaxsysfd;
7875 PL_multiline = proto_perl->Imultiline;
7876 PL_statusvalue = proto_perl->Istatusvalue;
7878 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7881 /* shortcuts to various I/O objects */
7882 PL_stdingv = gv_dup(proto_perl->Istdingv);
7883 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7884 PL_defgv = gv_dup(proto_perl->Idefgv);
7885 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7886 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7887 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7889 /* shortcuts to regexp stuff */
7890 PL_replgv = gv_dup(proto_perl->Ireplgv);
7892 /* shortcuts to misc objects */
7893 PL_errgv = gv_dup(proto_perl->Ierrgv);
7895 /* shortcuts to debugging objects */
7896 PL_DBgv = gv_dup(proto_perl->IDBgv);
7897 PL_DBline = gv_dup(proto_perl->IDBline);
7898 PL_DBsub = gv_dup(proto_perl->IDBsub);
7899 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7900 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7901 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7902 PL_lineary = av_dup(proto_perl->Ilineary);
7903 PL_dbargs = av_dup(proto_perl->Idbargs);
7906 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7907 PL_curstash = hv_dup(proto_perl->Tcurstash);
7908 PL_debstash = hv_dup(proto_perl->Idebstash);
7909 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7910 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7912 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7913 PL_endav = av_dup_inc(proto_perl->Iendav);
7914 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7915 PL_initav = av_dup_inc(proto_perl->Iinitav);
7917 PL_sub_generation = proto_perl->Isub_generation;
7919 /* funky return mechanisms */
7920 PL_forkprocess = proto_perl->Iforkprocess;
7922 /* subprocess state */
7923 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7925 /* internal state */
7926 PL_tainting = proto_perl->Itainting;
7927 PL_maxo = proto_perl->Imaxo;
7928 if (proto_perl->Iop_mask)
7929 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7931 PL_op_mask = Nullch;
7933 /* current interpreter roots */
7934 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7935 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7936 PL_main_start = proto_perl->Imain_start;
7937 PL_eval_root = proto_perl->Ieval_root;
7938 PL_eval_start = proto_perl->Ieval_start;
7940 /* runtime control stuff */
7941 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7942 PL_copline = proto_perl->Icopline;
7944 PL_filemode = proto_perl->Ifilemode;
7945 PL_lastfd = proto_perl->Ilastfd;
7946 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7949 PL_gensym = proto_perl->Igensym;
7950 PL_preambled = proto_perl->Ipreambled;
7951 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7952 PL_laststatval = proto_perl->Ilaststatval;
7953 PL_laststype = proto_perl->Ilaststype;
7954 PL_mess_sv = Nullsv;
7956 PL_orslen = proto_perl->Iorslen;
7957 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7958 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7960 /* interpreter atexit processing */
7961 PL_exitlistlen = proto_perl->Iexitlistlen;
7962 if (PL_exitlistlen) {
7963 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7964 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7967 PL_exitlist = (PerlExitListEntry*)NULL;
7968 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7970 PL_profiledata = NULL;
7971 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7972 /* PL_rsfp_filters entries have fake IoDIRP() */
7973 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7975 PL_compcv = cv_dup(proto_perl->Icompcv);
7976 PL_comppad = av_dup(proto_perl->Icomppad);
7977 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7978 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7979 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7980 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7981 proto_perl->Tcurpad);
7983 #ifdef HAVE_INTERP_INTERN
7984 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7987 /* more statics moved here */
7988 PL_generation = proto_perl->Igeneration;
7989 PL_DBcv = cv_dup(proto_perl->IDBcv);
7991 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7992 PL_in_clean_all = proto_perl->Iin_clean_all;
7994 PL_uid = proto_perl->Iuid;
7995 PL_euid = proto_perl->Ieuid;
7996 PL_gid = proto_perl->Igid;
7997 PL_egid = proto_perl->Iegid;
7998 PL_nomemok = proto_perl->Inomemok;
7999 PL_an = proto_perl->Ian;
8000 PL_cop_seqmax = proto_perl->Icop_seqmax;
8001 PL_op_seqmax = proto_perl->Iop_seqmax;
8002 PL_evalseq = proto_perl->Ievalseq;
8003 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8004 PL_origalen = proto_perl->Iorigalen;
8005 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8006 PL_osname = SAVEPV(proto_perl->Iosname);
8007 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8008 PL_sighandlerp = proto_perl->Isighandlerp;
8011 PL_runops = proto_perl->Irunops;
8013 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8016 PL_cshlen = proto_perl->Icshlen;
8017 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8020 PL_lex_state = proto_perl->Ilex_state;
8021 PL_lex_defer = proto_perl->Ilex_defer;
8022 PL_lex_expect = proto_perl->Ilex_expect;
8023 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8024 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8025 PL_lex_starts = proto_perl->Ilex_starts;
8026 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8027 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8028 PL_lex_op = proto_perl->Ilex_op;
8029 PL_lex_inpat = proto_perl->Ilex_inpat;
8030 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8031 PL_lex_brackets = proto_perl->Ilex_brackets;
8032 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8033 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8034 PL_lex_casemods = proto_perl->Ilex_casemods;
8035 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8036 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8038 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8039 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8040 PL_nexttoke = proto_perl->Inexttoke;
8042 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8043 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8044 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8045 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8046 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8047 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8048 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8049 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8050 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8051 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8052 PL_pending_ident = proto_perl->Ipending_ident;
8053 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8055 PL_expect = proto_perl->Iexpect;
8057 PL_multi_start = proto_perl->Imulti_start;
8058 PL_multi_end = proto_perl->Imulti_end;
8059 PL_multi_open = proto_perl->Imulti_open;
8060 PL_multi_close = proto_perl->Imulti_close;
8062 PL_error_count = proto_perl->Ierror_count;
8063 PL_subline = proto_perl->Isubline;
8064 PL_subname = sv_dup_inc(proto_perl->Isubname);
8066 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8067 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8068 PL_padix = proto_perl->Ipadix;
8069 PL_padix_floor = proto_perl->Ipadix_floor;
8070 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8072 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8073 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8074 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8075 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8076 PL_last_lop_op = proto_perl->Ilast_lop_op;
8077 PL_in_my = proto_perl->Iin_my;
8078 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8080 PL_cryptseen = proto_perl->Icryptseen;
8083 PL_hints = proto_perl->Ihints;
8085 PL_amagic_generation = proto_perl->Iamagic_generation;
8087 #ifdef USE_LOCALE_COLLATE
8088 PL_collation_ix = proto_perl->Icollation_ix;
8089 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8090 PL_collation_standard = proto_perl->Icollation_standard;
8091 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8092 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8093 #endif /* USE_LOCALE_COLLATE */
8095 #ifdef USE_LOCALE_NUMERIC
8096 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8097 PL_numeric_standard = proto_perl->Inumeric_standard;
8098 PL_numeric_local = proto_perl->Inumeric_local;
8099 PL_numeric_radix = proto_perl->Inumeric_radix;
8100 #endif /* !USE_LOCALE_NUMERIC */
8102 /* utf8 character classes */
8103 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8104 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8105 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8106 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8107 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8108 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8109 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8110 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8111 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8112 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8113 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8114 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8115 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8116 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8117 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8118 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8119 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8122 PL_last_swash_hv = Nullhv; /* reinits on demand */
8123 PL_last_swash_klen = 0;
8124 PL_last_swash_key[0]= '\0';
8125 PL_last_swash_tmps = (U8*)NULL;
8126 PL_last_swash_slen = 0;
8128 /* perly.c globals */
8129 PL_yydebug = proto_perl->Iyydebug;
8130 PL_yynerrs = proto_perl->Iyynerrs;
8131 PL_yyerrflag = proto_perl->Iyyerrflag;
8132 PL_yychar = proto_perl->Iyychar;
8133 PL_yyval = proto_perl->Iyyval;
8134 PL_yylval = proto_perl->Iyylval;
8136 PL_glob_index = proto_perl->Iglob_index;
8137 PL_srand_called = proto_perl->Isrand_called;
8138 PL_uudmap['M'] = 0; /* reinits on demand */
8139 PL_bitcount = Nullch; /* reinits on demand */
8141 if (proto_perl->Ipsig_ptr) {
8142 int sig_num[] = { SIG_NUM };
8143 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8144 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8145 for (i = 1; PL_sig_name[i]; i++) {
8146 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8147 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8151 PL_psig_ptr = (SV**)NULL;
8152 PL_psig_name = (SV**)NULL;
8155 /* thrdvar.h stuff */
8158 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8159 PL_tmps_ix = proto_perl->Ttmps_ix;
8160 PL_tmps_max = proto_perl->Ttmps_max;
8161 PL_tmps_floor = proto_perl->Ttmps_floor;
8162 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8164 while (i <= PL_tmps_ix) {
8165 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8169 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8170 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8171 Newz(54, PL_markstack, i, I32);
8172 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8173 - proto_perl->Tmarkstack);
8174 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8175 - proto_perl->Tmarkstack);
8176 Copy(proto_perl->Tmarkstack, PL_markstack,
8177 PL_markstack_ptr - PL_markstack + 1, I32);
8179 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8180 * NOTE: unlike the others! */
8181 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8182 PL_scopestack_max = proto_perl->Tscopestack_max;
8183 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8184 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8186 /* next push_return() sets PL_retstack[PL_retstack_ix]
8187 * NOTE: unlike the others! */
8188 PL_retstack_ix = proto_perl->Tretstack_ix;
8189 PL_retstack_max = proto_perl->Tretstack_max;
8190 Newz(54, PL_retstack, PL_retstack_max, OP*);
8191 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8193 /* NOTE: si_dup() looks at PL_markstack */
8194 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8196 /* PL_curstack = PL_curstackinfo->si_stack; */
8197 PL_curstack = av_dup(proto_perl->Tcurstack);
8198 PL_mainstack = av_dup(proto_perl->Tmainstack);
8200 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8201 PL_stack_base = AvARRAY(PL_curstack);
8202 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8203 - proto_perl->Tstack_base);
8204 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8206 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8207 * NOTE: unlike the others! */
8208 PL_savestack_ix = proto_perl->Tsavestack_ix;
8209 PL_savestack_max = proto_perl->Tsavestack_max;
8210 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8211 PL_savestack = ss_dup(proto_perl);
8215 ENTER; /* perl_destruct() wants to LEAVE; */
8218 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8219 PL_top_env = &PL_start_env;
8221 PL_op = proto_perl->Top;
8224 PL_Xpv = (XPV*)NULL;
8225 PL_na = proto_perl->Tna;
8227 PL_statbuf = proto_perl->Tstatbuf;
8228 PL_statcache = proto_perl->Tstatcache;
8229 PL_statgv = gv_dup(proto_perl->Tstatgv);
8230 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8232 PL_timesbuf = proto_perl->Ttimesbuf;
8235 PL_tainted = proto_perl->Ttainted;
8236 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8237 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8238 PL_rs = sv_dup_inc(proto_perl->Trs);
8239 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8240 PL_ofslen = proto_perl->Tofslen;
8241 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8242 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8243 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8244 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8245 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8246 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8248 PL_restartop = proto_perl->Trestartop;
8249 PL_in_eval = proto_perl->Tin_eval;
8250 PL_delaymagic = proto_perl->Tdelaymagic;
8251 PL_dirty = proto_perl->Tdirty;
8252 PL_localizing = proto_perl->Tlocalizing;
8254 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8255 PL_protect = proto_perl->Tprotect;
8257 PL_errors = sv_dup_inc(proto_perl->Terrors);
8258 PL_av_fetch_sv = Nullsv;
8259 PL_hv_fetch_sv = Nullsv;
8260 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8261 PL_modcount = proto_perl->Tmodcount;
8262 PL_lastgotoprobe = Nullop;
8263 PL_dumpindent = proto_perl->Tdumpindent;
8265 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8266 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8267 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8268 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8269 PL_sortcxix = proto_perl->Tsortcxix;
8270 PL_efloatbuf = Nullch; /* reinits on demand */
8271 PL_efloatsize = 0; /* reinits on demand */
8275 PL_screamfirst = NULL;
8276 PL_screamnext = NULL;
8277 PL_maxscream = -1; /* reinits on demand */
8278 PL_lastscream = Nullsv;
8280 PL_watchaddr = NULL;
8281 PL_watchok = Nullch;
8283 PL_regdummy = proto_perl->Tregdummy;
8284 PL_regcomp_parse = Nullch;
8285 PL_regxend = Nullch;
8286 PL_regcode = (regnode*)NULL;
8289 PL_regprecomp = Nullch;
8294 PL_seen_zerolen = 0;
8296 PL_regcomp_rx = (regexp*)NULL;
8298 PL_colorset = 0; /* reinits PL_colors[] */
8299 /*PL_colors[6] = {0,0,0,0,0,0};*/
8300 PL_reg_whilem_seen = 0;
8301 PL_reginput = Nullch;
8304 PL_regstartp = (I32*)NULL;
8305 PL_regendp = (I32*)NULL;
8306 PL_reglastparen = (U32*)NULL;
8307 PL_regtill = Nullch;
8309 PL_reg_start_tmp = (char**)NULL;
8310 PL_reg_start_tmpl = 0;
8311 PL_regdata = (struct reg_data*)NULL;
8314 PL_reg_eval_set = 0;
8316 PL_regprogram = (regnode*)NULL;
8318 PL_regcc = (CURCUR*)NULL;
8319 PL_reg_call_cc = (struct re_cc_state*)NULL;
8320 PL_reg_re = (regexp*)NULL;
8321 PL_reg_ganch = Nullch;
8323 PL_reg_magic = (MAGIC*)NULL;
8325 PL_reg_oldcurpm = (PMOP*)NULL;
8326 PL_reg_curpm = (PMOP*)NULL;
8327 PL_reg_oldsaved = Nullch;
8328 PL_reg_oldsavedlen = 0;
8330 PL_reg_leftiter = 0;
8331 PL_reg_poscache = Nullch;
8332 PL_reg_poscache_size= 0;
8334 /* RE engine - function pointers */
8335 PL_regcompp = proto_perl->Tregcompp;
8336 PL_regexecp = proto_perl->Tregexecp;
8337 PL_regint_start = proto_perl->Tregint_start;
8338 PL_regint_string = proto_perl->Tregint_string;
8339 PL_regfree = proto_perl->Tregfree;
8341 PL_reginterp_cnt = 0;
8342 PL_reg_starttry = 0;
8345 return (PerlInterpreter*)pPerl;
8351 #else /* !USE_ITHREADS */
8357 #endif /* USE_ITHREADS */
8360 do_report_used(pTHXo_ SV *sv)
8362 if (SvTYPE(sv) != SVTYPEMASK) {
8363 PerlIO_printf(Perl_debug_log, "****\n");
8369 do_clean_objs(pTHXo_ SV *sv)
8373 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8374 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8375 if (SvWEAKREF(sv)) {
8386 /* XXX Might want to check arrays, etc. */
8389 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8391 do_clean_named_objs(pTHXo_ SV *sv)
8393 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8394 if ( SvOBJECT(GvSV(sv)) ||
8395 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8396 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8397 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8398 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8400 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8408 do_clean_all(pTHXo_ SV *sv)
8410 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8411 SvFLAGS(sv) |= SVf_BREAK;