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;
2021 numtype = IS_NUMBER_INFINITY;
2023 /* we can have an optional exponent part */
2024 if (*s == 'e' || *s == 'E') {
2025 numtype &= ~IS_NUMBER_NEG;
2026 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2028 if (*s == '+' || *s == '-')
2033 } while (isDIGIT(*s));
2043 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2044 return IS_NUMBER_TO_INT_BY_ATOL;
2049 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2052 return sv_2pv(sv, &n_a);
2055 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2057 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2059 char *ptr = buf + TYPE_CHARS(UV);
2073 *--ptr = '0' + (uv % 10);
2082 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2087 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2088 char *tmpbuf = tbuf;
2094 if (SvGMAGICAL(sv)) {
2102 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2104 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2109 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2114 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2116 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2123 if (SvTHINKFIRST(sv)) {
2126 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2127 (SvRV(tmpstr) != SvRV(sv)))
2128 return SvPV(tmpstr,*lp);
2135 switch (SvTYPE(sv)) {
2137 if ( ((SvFLAGS(sv) &
2138 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2139 == (SVs_OBJECT|SVs_RMG))
2140 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2141 && (mg = mg_find(sv, 'r'))) {
2143 regexp *re = (regexp *)mg->mg_obj;
2146 char *fptr = "msix";
2151 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2153 while((ch = *fptr++)) {
2155 reflags[left++] = ch;
2158 reflags[right--] = ch;
2163 reflags[left] = '-';
2167 mg->mg_len = re->prelen + 4 + left;
2168 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2169 Copy("(?", mg->mg_ptr, 2, char);
2170 Copy(reflags, mg->mg_ptr+2, left, char);
2171 Copy(":", mg->mg_ptr+left+2, 1, char);
2172 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2173 mg->mg_ptr[mg->mg_len - 1] = ')';
2174 mg->mg_ptr[mg->mg_len] = 0;
2176 PL_reginterp_cnt += re->program[0].next_off;
2188 case SVt_PVBM: if (SvROK(sv))
2191 s = "SCALAR"; break;
2192 case SVt_PVLV: s = "LVALUE"; break;
2193 case SVt_PVAV: s = "ARRAY"; break;
2194 case SVt_PVHV: s = "HASH"; break;
2195 case SVt_PVCV: s = "CODE"; break;
2196 case SVt_PVGV: s = "GLOB"; break;
2197 case SVt_PVFM: s = "FORMAT"; break;
2198 case SVt_PVIO: s = "IO"; break;
2199 default: s = "UNKNOWN"; break;
2203 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2206 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2212 if (SvREADONLY(sv) && !SvOK(sv)) {
2214 if (ckWARN(WARN_UNINITIALIZED))
2220 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2221 /* XXXX 64-bit? IV may have better precision... */
2222 /* I tried changing this to be 64-bit-aware and
2223 * the t/op/numconvert.t became very, very, angry.
2225 if (SvTYPE(sv) < SVt_PVNV)
2226 sv_upgrade(sv, SVt_PVNV);
2227 /* The +20 is pure guesswork. Configure test needed. --jhi */
2228 SvGROW(sv, NV_DIG + 20);
2230 olderrno = errno; /* some Xenix systems wipe out errno here */
2232 if (SvNVX(sv) == 0.0)
2233 (void)strcpy(s,"0");
2237 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2240 #ifdef FIXNEGATIVEZERO
2241 if (*s == '-' && s[1] == '0' && !s[2])
2250 else if (SvIOKp(sv)) {
2251 U32 isIOK = SvIOK(sv);
2252 U32 isUIOK = SvIsUV(sv);
2253 char buf[TYPE_CHARS(UV)];
2256 if (SvTYPE(sv) < SVt_PVIV)
2257 sv_upgrade(sv, SVt_PVIV);
2259 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2261 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2262 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2263 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2264 SvCUR_set(sv, ebuf - ptr);
2277 if (ckWARN(WARN_UNINITIALIZED)
2278 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2283 if (SvTYPE(sv) < SVt_PV)
2284 /* Typically the caller expects that sv_any is not NULL now. */
2285 sv_upgrade(sv, SVt_PV);
2288 *lp = s - SvPVX(sv);
2291 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2292 PTR2UV(sv),SvPVX(sv)));
2296 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2297 /* Sneaky stuff here */
2301 tsv = newSVpv(tmpbuf, 0);
2317 len = strlen(tmpbuf);
2319 #ifdef FIXNEGATIVEZERO
2320 if (len == 2 && t[0] == '-' && t[1] == '0') {
2325 (void)SvUPGRADE(sv, SVt_PV);
2327 s = SvGROW(sv, len + 1);
2336 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2339 return sv_2pvbyte(sv, &n_a);
2343 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2345 return sv_2pv(sv,lp);
2349 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2352 return sv_2pvutf8(sv, &n_a);
2356 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2358 sv_utf8_upgrade(sv);
2359 return sv_2pv(sv,lp);
2362 /* This function is only called on magical items */
2364 Perl_sv_2bool(pTHX_ register SV *sv)
2374 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2375 (SvRV(tmpsv) != SvRV(sv)))
2376 return SvTRUE(tmpsv);
2377 return SvRV(sv) != 0;
2380 register XPV* Xpvtmp;
2381 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2382 (*Xpvtmp->xpv_pv > '0' ||
2383 Xpvtmp->xpv_cur > 1 ||
2384 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2391 return SvIVX(sv) != 0;
2394 return SvNVX(sv) != 0.0;
2402 =for apidoc sv_utf8_upgrade
2404 Convert the PV of an SV to its UTF8-encoded form.
2410 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2415 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2418 /* This function could be much more efficient if we had a FLAG in SVs
2419 * to signal if there are any hibit chars in the PV.
2421 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2426 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2427 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2428 SvCUR(sv) = len - 1;
2429 SvLEN(sv) = len; /* No longer know the real size. */
2431 Safefree(s); /* No longer using what was there before. */
2436 =for apidoc sv_utf8_downgrade
2438 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2439 This may not be possible if the PV contains non-byte encoding characters;
2440 if this is the case, either returns false or, if C<fail_ok> is not
2447 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2449 if (SvPOK(sv) && SvUTF8(sv)) {
2451 char *c = SvPVX(sv);
2452 STRLEN len = SvCUR(sv);
2454 if (!utf8_to_bytes((U8*)c, &len)) {
2459 Perl_croak(aTHX_ "Wide character in %s",
2460 PL_op_desc[PL_op->op_type]);
2462 Perl_croak(aTHX_ "Wide character");
2474 =for apidoc sv_utf8_encode
2476 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2477 flag so that it looks like bytes again. Nothing calls this.
2483 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2485 sv_utf8_upgrade(sv);
2490 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2494 bool has_utf = FALSE;
2495 if (!sv_utf8_downgrade(sv, TRUE))
2498 /* it is actually just a matter of turning the utf8 flag on, but
2499 * we want to make sure everything inside is valid utf8 first.
2502 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2505 while (c < SvEND(sv)) {
2516 /* Note: sv_setsv() should not be called with a source string that needs
2517 * to be reused, since it may destroy the source string if it is marked
2522 =for apidoc sv_setsv
2524 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2525 The source SV may be destroyed if it is mortal. Does not handle 'set'
2526 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2533 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2536 register U32 sflags;
2542 SV_CHECK_THINKFIRST(dstr);
2544 sstr = &PL_sv_undef;
2545 stype = SvTYPE(sstr);
2546 dtype = SvTYPE(dstr);
2550 /* There's a lot of redundancy below but we're going for speed here */
2555 if (dtype != SVt_PVGV) {
2556 (void)SvOK_off(dstr);
2564 sv_upgrade(dstr, SVt_IV);
2567 sv_upgrade(dstr, SVt_PVNV);
2571 sv_upgrade(dstr, SVt_PVIV);
2574 (void)SvIOK_only(dstr);
2575 SvIVX(dstr) = SvIVX(sstr);
2578 if (SvTAINTED(sstr))
2589 sv_upgrade(dstr, SVt_NV);
2594 sv_upgrade(dstr, SVt_PVNV);
2597 SvNVX(dstr) = SvNVX(sstr);
2598 (void)SvNOK_only(dstr);
2599 if (SvTAINTED(sstr))
2607 sv_upgrade(dstr, SVt_RV);
2608 else if (dtype == SVt_PVGV &&
2609 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2612 if (GvIMPORTED(dstr) != GVf_IMPORTED
2613 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2615 GvIMPORTED_on(dstr);
2626 sv_upgrade(dstr, SVt_PV);
2629 if (dtype < SVt_PVIV)
2630 sv_upgrade(dstr, SVt_PVIV);
2633 if (dtype < SVt_PVNV)
2634 sv_upgrade(dstr, SVt_PVNV);
2641 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2642 PL_op_name[PL_op->op_type]);
2644 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2648 if (dtype <= SVt_PVGV) {
2650 if (dtype != SVt_PVGV) {
2651 char *name = GvNAME(sstr);
2652 STRLEN len = GvNAMELEN(sstr);
2653 sv_upgrade(dstr, SVt_PVGV);
2654 sv_magic(dstr, dstr, '*', Nullch, 0);
2655 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2656 GvNAME(dstr) = savepvn(name, len);
2657 GvNAMELEN(dstr) = len;
2658 SvFAKE_on(dstr); /* can coerce to non-glob */
2660 /* ahem, death to those who redefine active sort subs */
2661 else if (PL_curstackinfo->si_type == PERLSI_SORT
2662 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2663 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2665 (void)SvOK_off(dstr);
2666 GvINTRO_off(dstr); /* one-shot flag */
2668 GvGP(dstr) = gp_ref(GvGP(sstr));
2669 if (SvTAINTED(sstr))
2671 if (GvIMPORTED(dstr) != GVf_IMPORTED
2672 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2674 GvIMPORTED_on(dstr);
2682 if (SvGMAGICAL(sstr)) {
2684 if (SvTYPE(sstr) != stype) {
2685 stype = SvTYPE(sstr);
2686 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2690 if (stype == SVt_PVLV)
2691 (void)SvUPGRADE(dstr, SVt_PVNV);
2693 (void)SvUPGRADE(dstr, stype);
2696 sflags = SvFLAGS(sstr);
2698 if (sflags & SVf_ROK) {
2699 if (dtype >= SVt_PV) {
2700 if (dtype == SVt_PVGV) {
2701 SV *sref = SvREFCNT_inc(SvRV(sstr));
2703 int intro = GvINTRO(dstr);
2708 GvINTRO_off(dstr); /* one-shot flag */
2709 Newz(602,gp, 1, GP);
2710 GvGP(dstr) = gp_ref(gp);
2711 GvSV(dstr) = NEWSV(72,0);
2712 GvLINE(dstr) = CopLINE(PL_curcop);
2713 GvEGV(dstr) = (GV*)dstr;
2716 switch (SvTYPE(sref)) {
2719 SAVESPTR(GvAV(dstr));
2721 dref = (SV*)GvAV(dstr);
2722 GvAV(dstr) = (AV*)sref;
2723 if (!GvIMPORTED_AV(dstr)
2724 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2726 GvIMPORTED_AV_on(dstr);
2731 SAVESPTR(GvHV(dstr));
2733 dref = (SV*)GvHV(dstr);
2734 GvHV(dstr) = (HV*)sref;
2735 if (!GvIMPORTED_HV(dstr)
2736 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2738 GvIMPORTED_HV_on(dstr);
2743 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2744 SvREFCNT_dec(GvCV(dstr));
2745 GvCV(dstr) = Nullcv;
2746 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2747 PL_sub_generation++;
2749 SAVESPTR(GvCV(dstr));
2752 dref = (SV*)GvCV(dstr);
2753 if (GvCV(dstr) != (CV*)sref) {
2754 CV* cv = GvCV(dstr);
2756 if (!GvCVGEN((GV*)dstr) &&
2757 (CvROOT(cv) || CvXSUB(cv)))
2760 /* ahem, death to those who redefine
2761 * active sort subs */
2762 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2763 PL_sortcop == CvSTART(cv))
2765 "Can't redefine active sort subroutine %s",
2766 GvENAME((GV*)dstr));
2767 /* Redefining a sub - warning is mandatory if
2768 it was a const and its value changed. */
2769 if (ckWARN(WARN_REDEFINE)
2771 && (!CvCONST((CV*)sref)
2772 || sv_cmp(cv_const_sv(cv),
2773 cv_const_sv((CV*)sref)))))
2775 Perl_warner(aTHX_ WARN_REDEFINE,
2777 ? "Constant subroutine %s redefined"
2778 : "Subroutine %s redefined",
2779 GvENAME((GV*)dstr));
2782 cv_ckproto(cv, (GV*)dstr,
2783 SvPOK(sref) ? SvPVX(sref) : Nullch);
2785 GvCV(dstr) = (CV*)sref;
2786 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2787 GvASSUMECV_on(dstr);
2788 PL_sub_generation++;
2790 if (!GvIMPORTED_CV(dstr)
2791 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2793 GvIMPORTED_CV_on(dstr);
2798 SAVESPTR(GvIOp(dstr));
2800 dref = (SV*)GvIOp(dstr);
2801 GvIOp(dstr) = (IO*)sref;
2805 SAVESPTR(GvFORM(dstr));
2807 dref = (SV*)GvFORM(dstr);
2808 GvFORM(dstr) = (CV*)sref;
2812 SAVESPTR(GvSV(dstr));
2814 dref = (SV*)GvSV(dstr);
2816 if (!GvIMPORTED_SV(dstr)
2817 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2819 GvIMPORTED_SV_on(dstr);
2827 if (SvTAINTED(sstr))
2832 (void)SvOOK_off(dstr); /* backoff */
2834 Safefree(SvPVX(dstr));
2835 SvLEN(dstr)=SvCUR(dstr)=0;
2838 (void)SvOK_off(dstr);
2839 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2841 if (sflags & SVp_NOK) {
2843 SvNVX(dstr) = SvNVX(sstr);
2845 if (sflags & SVp_IOK) {
2846 (void)SvIOK_on(dstr);
2847 SvIVX(dstr) = SvIVX(sstr);
2848 if (sflags & SVf_IVisUV)
2851 if (SvAMAGIC(sstr)) {
2855 else if (sflags & SVp_POK) {
2858 * Check to see if we can just swipe the string. If so, it's a
2859 * possible small lose on short strings, but a big win on long ones.
2860 * It might even be a win on short strings if SvPVX(dstr)
2861 * has to be allocated and SvPVX(sstr) has to be freed.
2864 if (SvTEMP(sstr) && /* slated for free anyway? */
2865 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2866 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2867 SvLEN(sstr) && /* and really is a string */
2868 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
2870 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2872 SvFLAGS(dstr) &= ~SVf_OOK;
2873 Safefree(SvPVX(dstr) - SvIVX(dstr));
2875 else if (SvLEN(dstr))
2876 Safefree(SvPVX(dstr));
2878 (void)SvPOK_only(dstr);
2879 SvPV_set(dstr, SvPVX(sstr));
2880 SvLEN_set(dstr, SvLEN(sstr));
2881 SvCUR_set(dstr, SvCUR(sstr));
2884 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2885 SvPV_set(sstr, Nullch);
2890 else { /* have to copy actual string */
2891 STRLEN len = SvCUR(sstr);
2893 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2894 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2895 SvCUR_set(dstr, len);
2896 *SvEND(dstr) = '\0';
2897 (void)SvPOK_only(dstr);
2899 if ((sflags & SVf_UTF8) && !IN_BYTE)
2902 if (sflags & SVp_NOK) {
2904 SvNVX(dstr) = SvNVX(sstr);
2906 if (sflags & SVp_IOK) {
2907 (void)SvIOK_on(dstr);
2908 SvIVX(dstr) = SvIVX(sstr);
2909 if (sflags & SVf_IVisUV)
2913 else if (sflags & SVp_NOK) {
2914 SvNVX(dstr) = SvNVX(sstr);
2915 (void)SvNOK_only(dstr);
2916 if (sflags & SVf_IOK) {
2917 (void)SvIOK_on(dstr);
2918 SvIVX(dstr) = SvIVX(sstr);
2919 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2920 if (sflags & SVf_IVisUV)
2924 else if (sflags & SVp_IOK) {
2925 (void)SvIOK_only(dstr);
2926 SvIVX(dstr) = SvIVX(sstr);
2927 if (sflags & SVf_IVisUV)
2931 if (dtype == SVt_PVGV) {
2932 if (ckWARN(WARN_MISC))
2933 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2936 (void)SvOK_off(dstr);
2938 if (SvTAINTED(sstr))
2943 =for apidoc sv_setsv_mg
2945 Like C<sv_setsv>, but also handles 'set' magic.
2951 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2953 sv_setsv(dstr,sstr);
2958 =for apidoc sv_setpvn
2960 Copies a string into an SV. The C<len> parameter indicates the number of
2961 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2967 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2969 register char *dptr;
2971 /* len is STRLEN which is unsigned, need to copy to signed */
2975 SV_CHECK_THINKFIRST(sv);
2980 (void)SvUPGRADE(sv, SVt_PV);
2982 SvGROW(sv, len + 1);
2984 Move(ptr,dptr,len,char);
2987 (void)SvPOK_only(sv); /* validate pointer */
2992 =for apidoc sv_setpvn_mg
2994 Like C<sv_setpvn>, but also handles 'set' magic.
3000 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3002 sv_setpvn(sv,ptr,len);
3007 =for apidoc sv_setpv
3009 Copies a string into an SV. The string must be null-terminated. Does not
3010 handle 'set' magic. See C<sv_setpv_mg>.
3016 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3018 register STRLEN len;
3020 SV_CHECK_THINKFIRST(sv);
3026 (void)SvUPGRADE(sv, SVt_PV);
3028 SvGROW(sv, len + 1);
3029 Move(ptr,SvPVX(sv),len+1,char);
3031 (void)SvPOK_only(sv); /* validate pointer */
3036 =for apidoc sv_setpv_mg
3038 Like C<sv_setpv>, but also handles 'set' magic.
3044 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3051 =for apidoc sv_usepvn
3053 Tells an SV to use C<ptr> to find its string value. Normally the string is
3054 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3055 The C<ptr> should point to memory that was allocated by C<malloc>. The
3056 string length, C<len>, must be supplied. This function will realloc the
3057 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3058 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3059 See C<sv_usepvn_mg>.
3065 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3067 SV_CHECK_THINKFIRST(sv);
3068 (void)SvUPGRADE(sv, SVt_PV);
3073 (void)SvOOK_off(sv);
3074 if (SvPVX(sv) && SvLEN(sv))
3075 Safefree(SvPVX(sv));
3076 Renew(ptr, len+1, char);
3079 SvLEN_set(sv, len+1);
3081 (void)SvPOK_only(sv); /* validate pointer */
3086 =for apidoc sv_usepvn_mg
3088 Like C<sv_usepvn>, but also handles 'set' magic.
3094 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3096 sv_usepvn(sv,ptr,len);
3101 Perl_sv_force_normal(pTHX_ register SV *sv)
3103 if (SvREADONLY(sv)) {
3106 char *pvx = SvPVX(sv);
3107 STRLEN len = SvCUR(sv);
3108 U32 hash = SvUVX(sv);
3109 SvGROW(sv, len + 1);
3110 Move(pvx,SvPVX(sv),len,char);
3114 unsharepvn(pvx,len,hash);
3116 else if (PL_curcop != &PL_compiling)
3117 Perl_croak(aTHX_ PL_no_modify);
3121 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3128 Efficient removal of characters from the beginning of the string buffer.
3129 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3130 the string buffer. The C<ptr> becomes the first character of the adjusted
3137 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3141 register STRLEN delta;
3143 if (!ptr || !SvPOKp(sv))
3145 SV_CHECK_THINKFIRST(sv);
3146 if (SvTYPE(sv) < SVt_PVIV)
3147 sv_upgrade(sv,SVt_PVIV);
3150 if (!SvLEN(sv)) { /* make copy of shared string */
3151 char *pvx = SvPVX(sv);
3152 STRLEN len = SvCUR(sv);
3153 SvGROW(sv, len + 1);
3154 Move(pvx,SvPVX(sv),len,char);
3158 SvFLAGS(sv) |= SVf_OOK;
3160 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3161 delta = ptr - SvPVX(sv);
3169 =for apidoc sv_catpvn
3171 Concatenates the string onto the end of the string which is in the SV. The
3172 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3173 'set' magic. See C<sv_catpvn_mg>.
3179 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3184 junk = SvPV_force(sv, tlen);
3185 SvGROW(sv, tlen + len + 1);
3188 Move(ptr,SvPVX(sv)+tlen,len,char);
3191 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3196 =for apidoc sv_catpvn_mg
3198 Like C<sv_catpvn>, but also handles 'set' magic.
3204 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3206 sv_catpvn(sv,ptr,len);
3211 =for apidoc sv_catsv
3213 Concatenates the string from SV C<ssv> onto the end of the string in SV
3214 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3220 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3226 if ((s = SvPV(sstr, len))) {
3227 if (DO_UTF8(sstr)) {
3228 sv_utf8_upgrade(dstr);
3229 sv_catpvn(dstr,s,len);
3233 sv_catpvn(dstr,s,len);
3238 =for apidoc sv_catsv_mg
3240 Like C<sv_catsv>, but also handles 'set' magic.
3246 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3248 sv_catsv(dstr,sstr);
3253 =for apidoc sv_catpv
3255 Concatenates the string onto the end of the string which is in the SV.
3256 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3262 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3264 register STRLEN len;
3270 junk = SvPV_force(sv, tlen);
3272 SvGROW(sv, tlen + len + 1);
3275 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3277 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3282 =for apidoc sv_catpv_mg
3284 Like C<sv_catpv>, but also handles 'set' magic.
3290 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3297 Perl_newSV(pTHX_ STRLEN len)
3303 sv_upgrade(sv, SVt_PV);
3304 SvGROW(sv, len + 1);
3309 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3312 =for apidoc sv_magic
3314 Adds magic to an SV.
3320 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3324 if (SvREADONLY(sv)) {
3326 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3327 Perl_croak(aTHX_ PL_no_modify);
3329 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3330 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3337 (void)SvUPGRADE(sv, SVt_PVMG);
3339 Newz(702,mg, 1, MAGIC);
3340 mg->mg_moremagic = SvMAGIC(sv);
3343 if (!obj || obj == sv || how == '#' || how == 'r')
3347 mg->mg_obj = SvREFCNT_inc(obj);
3348 mg->mg_flags |= MGf_REFCOUNTED;
3351 mg->mg_len = namlen;
3354 mg->mg_ptr = savepvn(name, namlen);
3355 else if (namlen == HEf_SVKEY)
3356 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3360 mg->mg_virtual = &PL_vtbl_sv;
3363 mg->mg_virtual = &PL_vtbl_amagic;
3366 mg->mg_virtual = &PL_vtbl_amagicelem;
3372 mg->mg_virtual = &PL_vtbl_bm;
3375 mg->mg_virtual = &PL_vtbl_regdata;
3378 mg->mg_virtual = &PL_vtbl_regdatum;
3381 mg->mg_virtual = &PL_vtbl_env;
3384 mg->mg_virtual = &PL_vtbl_fm;
3387 mg->mg_virtual = &PL_vtbl_envelem;
3390 mg->mg_virtual = &PL_vtbl_mglob;
3393 mg->mg_virtual = &PL_vtbl_isa;
3396 mg->mg_virtual = &PL_vtbl_isaelem;
3399 mg->mg_virtual = &PL_vtbl_nkeys;
3406 mg->mg_virtual = &PL_vtbl_dbline;
3410 mg->mg_virtual = &PL_vtbl_mutex;
3412 #endif /* USE_THREADS */
3413 #ifdef USE_LOCALE_COLLATE
3415 mg->mg_virtual = &PL_vtbl_collxfrm;
3417 #endif /* USE_LOCALE_COLLATE */
3419 mg->mg_virtual = &PL_vtbl_pack;
3423 mg->mg_virtual = &PL_vtbl_packelem;
3426 mg->mg_virtual = &PL_vtbl_regexp;
3429 mg->mg_virtual = &PL_vtbl_sig;
3432 mg->mg_virtual = &PL_vtbl_sigelem;
3435 mg->mg_virtual = &PL_vtbl_taint;
3439 mg->mg_virtual = &PL_vtbl_uvar;
3442 mg->mg_virtual = &PL_vtbl_vec;
3445 mg->mg_virtual = &PL_vtbl_substr;
3448 mg->mg_virtual = &PL_vtbl_defelem;
3451 mg->mg_virtual = &PL_vtbl_glob;
3454 mg->mg_virtual = &PL_vtbl_arylen;
3457 mg->mg_virtual = &PL_vtbl_pos;
3460 mg->mg_virtual = &PL_vtbl_backref;
3462 case '~': /* Reserved for use by extensions not perl internals. */
3463 /* Useful for attaching extension internal data to perl vars. */
3464 /* Note that multiple extensions may clash if magical scalars */
3465 /* etc holding private data from one are passed to another. */
3469 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3473 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3477 =for apidoc sv_unmagic
3479 Removes magic from an SV.
3485 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3489 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3492 for (mg = *mgp; mg; mg = *mgp) {
3493 if (mg->mg_type == type) {
3494 MGVTBL* vtbl = mg->mg_virtual;
3495 *mgp = mg->mg_moremagic;
3496 if (vtbl && vtbl->svt_free)
3497 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3498 if (mg->mg_ptr && mg->mg_type != 'g')
3499 if (mg->mg_len >= 0)
3500 Safefree(mg->mg_ptr);
3501 else if (mg->mg_len == HEf_SVKEY)
3502 SvREFCNT_dec((SV*)mg->mg_ptr);
3503 if (mg->mg_flags & MGf_REFCOUNTED)
3504 SvREFCNT_dec(mg->mg_obj);
3508 mgp = &mg->mg_moremagic;
3512 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3519 =for apidoc sv_rvweaken
3527 Perl_sv_rvweaken(pTHX_ SV *sv)
3530 if (!SvOK(sv)) /* let undefs pass */
3533 Perl_croak(aTHX_ "Can't weaken a nonreference");
3534 else if (SvWEAKREF(sv)) {
3536 if (ckWARN(WARN_MISC))
3537 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3541 sv_add_backref(tsv, sv);
3548 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3552 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3553 av = (AV*)mg->mg_obj;
3556 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3557 SvREFCNT_dec(av); /* for sv_magic */
3563 S_sv_del_backref(pTHX_ SV *sv)
3570 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3571 Perl_croak(aTHX_ "panic: del_backref");
3572 av = (AV *)mg->mg_obj;
3577 svp[i] = &PL_sv_undef; /* XXX */
3584 =for apidoc sv_insert
3586 Inserts a string at the specified offset/length within the SV. Similar to
3587 the Perl substr() function.
3593 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3597 register char *midend;
3598 register char *bigend;
3604 Perl_croak(aTHX_ "Can't modify non-existent substring");
3605 SvPV_force(bigstr, curlen);
3606 (void)SvPOK_only_UTF8(bigstr);
3607 if (offset + len > curlen) {
3608 SvGROW(bigstr, offset+len+1);
3609 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3610 SvCUR_set(bigstr, offset+len);
3614 i = littlelen - len;
3615 if (i > 0) { /* string might grow */
3616 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3617 mid = big + offset + len;
3618 midend = bigend = big + SvCUR(bigstr);
3621 while (midend > mid) /* shove everything down */
3622 *--bigend = *--midend;
3623 Move(little,big+offset,littlelen,char);
3629 Move(little,SvPVX(bigstr)+offset,len,char);
3634 big = SvPVX(bigstr);
3637 bigend = big + SvCUR(bigstr);
3639 if (midend > bigend)
3640 Perl_croak(aTHX_ "panic: sv_insert");
3642 if (mid - big > bigend - midend) { /* faster to shorten from end */
3644 Move(little, mid, littlelen,char);
3647 i = bigend - midend;
3649 Move(midend, mid, i,char);
3653 SvCUR_set(bigstr, mid - big);
3656 else if ((i = mid - big)) { /* faster from front */
3657 midend -= littlelen;
3659 sv_chop(bigstr,midend-i);
3664 Move(little, mid, littlelen,char);
3666 else if (littlelen) {
3667 midend -= littlelen;
3668 sv_chop(bigstr,midend);
3669 Move(little,midend,littlelen,char);
3672 sv_chop(bigstr,midend);
3678 =for apidoc sv_replace
3680 Make the first argument a copy of the second, then delete the original.
3686 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3689 U32 refcnt = SvREFCNT(sv);
3690 SV_CHECK_THINKFIRST(sv);
3691 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3692 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3693 if (SvMAGICAL(sv)) {
3697 sv_upgrade(nsv, SVt_PVMG);
3698 SvMAGIC(nsv) = SvMAGIC(sv);
3699 SvFLAGS(nsv) |= SvMAGICAL(sv);
3705 assert(!SvREFCNT(sv));
3706 StructCopy(nsv,sv,SV);
3707 SvREFCNT(sv) = refcnt;
3708 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3713 =for apidoc sv_clear
3715 Clear an SV, making it empty. Does not free the memory used by the SV
3722 Perl_sv_clear(pTHX_ register SV *sv)
3726 assert(SvREFCNT(sv) == 0);
3730 if (PL_defstash) { /* Still have a symbol table? */
3735 Zero(&tmpref, 1, SV);
3736 sv_upgrade(&tmpref, SVt_RV);
3738 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3739 SvREFCNT(&tmpref) = 1;
3742 stash = SvSTASH(sv);
3743 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3746 PUSHSTACKi(PERLSI_DESTROY);
3747 SvRV(&tmpref) = SvREFCNT_inc(sv);
3752 call_sv((SV*)GvCV(destructor),
3753 G_DISCARD|G_EVAL|G_KEEPERR);
3759 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3761 del_XRV(SvANY(&tmpref));
3764 if (PL_in_clean_objs)
3765 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3767 /* DESTROY gave object new lease on life */
3773 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3774 SvOBJECT_off(sv); /* Curse the object. */
3775 if (SvTYPE(sv) != SVt_PVIO)
3776 --PL_sv_objcount; /* XXX Might want something more general */
3779 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3782 switch (SvTYPE(sv)) {
3785 IoIFP(sv) != PerlIO_stdin() &&
3786 IoIFP(sv) != PerlIO_stdout() &&
3787 IoIFP(sv) != PerlIO_stderr())
3789 io_close((IO*)sv, FALSE);
3791 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3792 PerlDir_close(IoDIRP(sv));
3793 IoDIRP(sv) = (DIR*)NULL;
3794 Safefree(IoTOP_NAME(sv));
3795 Safefree(IoFMT_NAME(sv));
3796 Safefree(IoBOTTOM_NAME(sv));
3811 SvREFCNT_dec(LvTARG(sv));
3815 Safefree(GvNAME(sv));
3816 /* cannot decrease stash refcount yet, as we might recursively delete
3817 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3818 of stash until current sv is completely gone.
3819 -- JohnPC, 27 Mar 1998 */
3820 stash = GvSTASH(sv);
3826 (void)SvOOK_off(sv);
3834 SvREFCNT_dec(SvRV(sv));
3836 else if (SvPVX(sv) && SvLEN(sv))
3837 Safefree(SvPVX(sv));
3838 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3839 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3851 switch (SvTYPE(sv)) {
3867 del_XPVIV(SvANY(sv));
3870 del_XPVNV(SvANY(sv));
3873 del_XPVMG(SvANY(sv));
3876 del_XPVLV(SvANY(sv));
3879 del_XPVAV(SvANY(sv));
3882 del_XPVHV(SvANY(sv));
3885 del_XPVCV(SvANY(sv));
3888 del_XPVGV(SvANY(sv));
3889 /* code duplication for increased performance. */
3890 SvFLAGS(sv) &= SVf_BREAK;
3891 SvFLAGS(sv) |= SVTYPEMASK;
3892 /* decrease refcount of the stash that owns this GV, if any */
3894 SvREFCNT_dec(stash);
3895 return; /* not break, SvFLAGS reset already happened */
3897 del_XPVBM(SvANY(sv));
3900 del_XPVFM(SvANY(sv));
3903 del_XPVIO(SvANY(sv));
3906 SvFLAGS(sv) &= SVf_BREAK;
3907 SvFLAGS(sv) |= SVTYPEMASK;
3911 Perl_sv_newref(pTHX_ SV *sv)
3914 ATOMIC_INC(SvREFCNT(sv));
3921 Free the memory used by an SV.
3927 Perl_sv_free(pTHX_ SV *sv)
3930 int refcount_is_zero;
3934 if (SvREFCNT(sv) == 0) {
3935 if (SvFLAGS(sv) & SVf_BREAK)
3937 if (PL_in_clean_all) /* All is fair */
3939 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3940 /* make sure SvREFCNT(sv)==0 happens very seldom */
3941 SvREFCNT(sv) = (~(U32)0)/2;
3944 if (ckWARN_d(WARN_INTERNAL))
3945 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3948 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3949 if (!refcount_is_zero)
3953 if (ckWARN_d(WARN_DEBUGGING))
3954 Perl_warner(aTHX_ WARN_DEBUGGING,
3955 "Attempt to free temp prematurely: SV 0x%"UVxf,
3960 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3961 /* make sure SvREFCNT(sv)==0 happens very seldom */
3962 SvREFCNT(sv) = (~(U32)0)/2;
3973 Returns the length of the string in the SV. See also C<SvCUR>.
3979 Perl_sv_len(pTHX_ register SV *sv)
3988 len = mg_length(sv);
3990 junk = SvPV(sv, len);
3995 =for apidoc sv_len_utf8
3997 Returns the number of characters in the string in an SV, counting wide
3998 UTF8 bytes as a single character.
4004 Perl_sv_len_utf8(pTHX_ register SV *sv)
4011 return mg_length(sv);
4016 U8 *s = (U8*)SvPV(sv, len);
4018 return Perl_utf8_length(aTHX_ s, s + len);
4023 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4028 I32 uoffset = *offsetp;
4034 start = s = (U8*)SvPV(sv, len);
4036 while (s < send && uoffset--)
4040 *offsetp = s - start;
4044 while (s < send && ulen--)
4054 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4063 s = (U8*)SvPV(sv, len);
4065 Perl_croak(aTHX_ "panic: bad byte offset");
4066 send = s + *offsetp;
4074 if (ckWARN_d(WARN_UTF8))
4075 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4085 Returns a boolean indicating whether the strings in the two SVs are
4092 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4099 bool pv1tmp = FALSE;
4100 bool pv2tmp = FALSE;
4107 pv1 = SvPV(sv1, cur1);
4114 pv2 = SvPV(sv2, cur2);
4116 /* do not utf8ize the comparands as a side-effect */
4117 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4119 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4123 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4129 eq = memEQ(pv1, pv2, cur1);
4142 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4143 string in C<sv1> is less than, equal to, or greater than the string in
4150 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4155 bool pv1tmp = FALSE;
4156 bool pv2tmp = FALSE;
4163 pv1 = SvPV(sv1, cur1);
4170 pv2 = SvPV(sv2, cur2);
4172 /* do not utf8ize the comparands as a side-effect */
4173 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4175 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4179 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4185 cmp = cur2 ? -1 : 0;
4189 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4192 cmp = retval < 0 ? -1 : 1;
4193 } else if (cur1 == cur2) {
4196 cmp = cur1 < cur2 ? -1 : 1;
4209 =for apidoc sv_cmp_locale
4211 Compares the strings in two SVs in a locale-aware manner. See
4218 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4220 #ifdef USE_LOCALE_COLLATE
4226 if (PL_collation_standard)
4230 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4232 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4234 if (!pv1 || !len1) {
4245 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4248 return retval < 0 ? -1 : 1;
4251 * When the result of collation is equality, that doesn't mean
4252 * that there are no differences -- some locales exclude some
4253 * characters from consideration. So to avoid false equalities,
4254 * we use the raw string as a tiebreaker.
4260 #endif /* USE_LOCALE_COLLATE */
4262 return sv_cmp(sv1, sv2);
4265 #ifdef USE_LOCALE_COLLATE
4267 * Any scalar variable may carry an 'o' magic that contains the
4268 * scalar data of the variable transformed to such a format that
4269 * a normal memory comparison can be used to compare the data
4270 * according to the locale settings.
4273 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4277 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4278 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4283 Safefree(mg->mg_ptr);
4285 if ((xf = mem_collxfrm(s, len, &xlen))) {
4286 if (SvREADONLY(sv)) {
4289 return xf + sizeof(PL_collation_ix);
4292 sv_magic(sv, 0, 'o', 0, 0);
4293 mg = mg_find(sv, 'o');
4306 if (mg && mg->mg_ptr) {
4308 return mg->mg_ptr + sizeof(PL_collation_ix);
4316 #endif /* USE_LOCALE_COLLATE */
4321 Get a line from the filehandle and store it into the SV, optionally
4322 appending to the currently-stored string.
4328 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4333 register STDCHAR rslast;
4334 register STDCHAR *bp;
4338 SV_CHECK_THINKFIRST(sv);
4339 (void)SvUPGRADE(sv, SVt_PV);
4343 if (RsSNARF(PL_rs)) {
4347 else if (RsRECORD(PL_rs)) {
4348 I32 recsize, bytesread;
4351 /* Grab the size of the record we're getting */
4352 recsize = SvIV(SvRV(PL_rs));
4353 (void)SvPOK_only(sv); /* Validate pointer */
4354 buffer = SvGROW(sv, recsize + 1);
4357 /* VMS wants read instead of fread, because fread doesn't respect */
4358 /* RMS record boundaries. This is not necessarily a good thing to be */
4359 /* doing, but we've got no other real choice */
4360 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4362 bytesread = PerlIO_read(fp, buffer, recsize);
4364 SvCUR_set(sv, bytesread);
4365 buffer[bytesread] = '\0';
4366 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4368 else if (RsPARA(PL_rs)) {
4373 rsptr = SvPV(PL_rs, rslen);
4374 rslast = rslen ? rsptr[rslen - 1] : '\0';
4376 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4377 do { /* to make sure file boundaries work right */
4380 i = PerlIO_getc(fp);
4384 PerlIO_ungetc(fp,i);
4390 /* See if we know enough about I/O mechanism to cheat it ! */
4392 /* This used to be #ifdef test - it is made run-time test for ease
4393 of abstracting out stdio interface. One call should be cheap
4394 enough here - and may even be a macro allowing compile
4398 if (PerlIO_fast_gets(fp)) {
4401 * We're going to steal some values from the stdio struct
4402 * and put EVERYTHING in the innermost loop into registers.
4404 register STDCHAR *ptr;
4408 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4409 /* An ungetc()d char is handled separately from the regular
4410 * buffer, so we getc() it back out and stuff it in the buffer.
4412 i = PerlIO_getc(fp);
4413 if (i == EOF) return 0;
4414 *(--((*fp)->_ptr)) = (unsigned char) i;
4418 /* Here is some breathtakingly efficient cheating */
4420 cnt = PerlIO_get_cnt(fp); /* get count into register */
4421 (void)SvPOK_only(sv); /* validate pointer */
4422 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4423 if (cnt > 80 && SvLEN(sv) > append) {
4424 shortbuffered = cnt - SvLEN(sv) + append + 1;
4425 cnt -= shortbuffered;
4429 /* remember that cnt can be negative */
4430 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4435 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4436 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4437 DEBUG_P(PerlIO_printf(Perl_debug_log,
4438 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4439 DEBUG_P(PerlIO_printf(Perl_debug_log,
4440 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4441 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4442 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4447 while (cnt > 0) { /* this | eat */
4449 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4450 goto thats_all_folks; /* screams | sed :-) */
4454 Copy(ptr, bp, cnt, char); /* this | eat */
4455 bp += cnt; /* screams | dust */
4456 ptr += cnt; /* louder | sed :-) */
4461 if (shortbuffered) { /* oh well, must extend */
4462 cnt = shortbuffered;
4464 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4466 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4467 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4471 DEBUG_P(PerlIO_printf(Perl_debug_log,
4472 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4473 PTR2UV(ptr),(long)cnt));
4474 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4475 DEBUG_P(PerlIO_printf(Perl_debug_log,
4476 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4477 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4478 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4479 /* This used to call 'filbuf' in stdio form, but as that behaves like
4480 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4481 another abstraction. */
4482 i = PerlIO_getc(fp); /* get more characters */
4483 DEBUG_P(PerlIO_printf(Perl_debug_log,
4484 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4485 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4486 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4487 cnt = PerlIO_get_cnt(fp);
4488 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4489 DEBUG_P(PerlIO_printf(Perl_debug_log,
4490 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4492 if (i == EOF) /* all done for ever? */
4493 goto thats_really_all_folks;
4495 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4497 SvGROW(sv, bpx + cnt + 2);
4498 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4500 *bp++ = i; /* store character from PerlIO_getc */
4502 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4503 goto thats_all_folks;
4507 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4508 memNE((char*)bp - rslen, rsptr, rslen))
4509 goto screamer; /* go back to the fray */
4510 thats_really_all_folks:
4512 cnt += shortbuffered;
4513 DEBUG_P(PerlIO_printf(Perl_debug_log,
4514 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4515 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4516 DEBUG_P(PerlIO_printf(Perl_debug_log,
4517 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4518 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4519 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4521 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4522 DEBUG_P(PerlIO_printf(Perl_debug_log,
4523 "Screamer: done, len=%ld, string=|%.*s|\n",
4524 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4529 /*The big, slow, and stupid way */
4532 /* Need to work around EPOC SDK features */
4533 /* On WINS: MS VC5 generates calls to _chkstk, */
4534 /* if a `large' stack frame is allocated */
4535 /* gcc on MARM does not generate calls like these */
4541 register STDCHAR *bpe = buf + sizeof(buf);
4543 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4544 ; /* keep reading */
4548 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4549 /* Accomodate broken VAXC compiler, which applies U8 cast to
4550 * both args of ?: operator, causing EOF to change into 255
4552 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4556 sv_catpvn(sv, (char *) buf, cnt);
4558 sv_setpvn(sv, (char *) buf, cnt);
4560 if (i != EOF && /* joy */
4562 SvCUR(sv) < rslen ||
4563 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4567 * If we're reading from a TTY and we get a short read,
4568 * indicating that the user hit his EOF character, we need
4569 * to notice it now, because if we try to read from the TTY
4570 * again, the EOF condition will disappear.
4572 * The comparison of cnt to sizeof(buf) is an optimization
4573 * that prevents unnecessary calls to feof().
4577 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4582 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4583 while (i != EOF) { /* to make sure file boundaries work right */
4584 i = PerlIO_getc(fp);
4586 PerlIO_ungetc(fp,i);
4592 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4599 Auto-increment of the value in the SV.
4605 Perl_sv_inc(pTHX_ register SV *sv)
4614 if (SvTHINKFIRST(sv)) {
4615 if (SvREADONLY(sv)) {
4617 if (PL_curcop != &PL_compiling)
4618 Perl_croak(aTHX_ PL_no_modify);
4622 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4624 i = PTR2IV(SvRV(sv));
4629 flags = SvFLAGS(sv);
4630 if (flags & SVp_NOK) {
4631 (void)SvNOK_only(sv);
4635 if (flags & SVp_IOK) {
4637 if (SvUVX(sv) == UV_MAX)
4638 sv_setnv(sv, (NV)UV_MAX + 1.0);
4640 (void)SvIOK_only_UV(sv);
4643 if (SvIVX(sv) == IV_MAX)
4644 sv_setnv(sv, (NV)IV_MAX + 1.0);
4646 (void)SvIOK_only(sv);
4652 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4653 if ((flags & SVTYPEMASK) < SVt_PVNV)
4654 sv_upgrade(sv, SVt_NV);
4656 (void)SvNOK_only(sv);
4660 while (isALPHA(*d)) d++;
4661 while (isDIGIT(*d)) d++;
4663 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4667 while (d >= SvPVX(sv)) {
4675 /* MKS: The original code here died if letters weren't consecutive.
4676 * at least it didn't have to worry about non-C locales. The
4677 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4678 * arranged in order (although not consecutively) and that only
4679 * [A-Za-z] are accepted by isALPHA in the C locale.
4681 if (*d != 'z' && *d != 'Z') {
4682 do { ++*d; } while (!isALPHA(*d));
4685 *(d--) -= 'z' - 'a';
4690 *(d--) -= 'z' - 'a' + 1;
4694 /* oh,oh, the number grew */
4695 SvGROW(sv, SvCUR(sv) + 2);
4697 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4708 Auto-decrement of the value in the SV.
4714 Perl_sv_dec(pTHX_ register SV *sv)
4722 if (SvTHINKFIRST(sv)) {
4723 if (SvREADONLY(sv)) {
4725 if (PL_curcop != &PL_compiling)
4726 Perl_croak(aTHX_ PL_no_modify);
4730 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4732 i = PTR2IV(SvRV(sv));
4737 flags = SvFLAGS(sv);
4738 if (flags & SVp_NOK) {
4740 (void)SvNOK_only(sv);
4743 if (flags & SVp_IOK) {
4745 if (SvUVX(sv) == 0) {
4746 (void)SvIOK_only(sv);
4750 (void)SvIOK_only_UV(sv);
4754 if (SvIVX(sv) == IV_MIN)
4755 sv_setnv(sv, (NV)IV_MIN - 1.0);
4757 (void)SvIOK_only(sv);
4763 if (!(flags & SVp_POK)) {
4764 if ((flags & SVTYPEMASK) < SVt_PVNV)
4765 sv_upgrade(sv, SVt_NV);
4767 (void)SvNOK_only(sv);
4770 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4774 =for apidoc sv_mortalcopy
4776 Creates a new SV which is a copy of the original SV. The new SV is marked
4782 /* Make a string that will exist for the duration of the expression
4783 * evaluation. Actually, it may have to last longer than that, but
4784 * hopefully we won't free it until it has been assigned to a
4785 * permanent location. */
4788 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4794 sv_setsv(sv,oldstr);
4796 PL_tmps_stack[++PL_tmps_ix] = sv;
4802 =for apidoc sv_newmortal
4804 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4810 Perl_sv_newmortal(pTHX)
4816 SvFLAGS(sv) = SVs_TEMP;
4818 PL_tmps_stack[++PL_tmps_ix] = sv;
4823 =for apidoc sv_2mortal
4825 Marks an SV as mortal. The SV will be destroyed when the current context
4831 /* same thing without the copying */
4834 Perl_sv_2mortal(pTHX_ register SV *sv)
4839 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4842 PL_tmps_stack[++PL_tmps_ix] = sv;
4850 Creates a new SV and copies a string into it. The reference count for the
4851 SV is set to 1. If C<len> is zero, Perl will compute the length using
4852 strlen(). For efficiency, consider using C<newSVpvn> instead.
4858 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4865 sv_setpvn(sv,s,len);
4870 =for apidoc newSVpvn
4872 Creates a new SV and copies a string into it. The reference count for the
4873 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4874 string. You are responsible for ensuring that the source string is at least
4881 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4886 sv_setpvn(sv,s,len);
4891 =for apidoc newSVpvn_share
4893 Creates a new SV and populates it with a string from
4894 the string table. Turns on READONLY and FAKE.
4895 The idea here is that as string table is used for shared hash
4896 keys these strings will have SvPVX == HeKEY and hash lookup
4897 will avoid string compare.
4903 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4907 PERL_HASH(hash, src, len);
4909 sv_upgrade(sv, SVt_PVIV);
4910 SvPVX(sv) = sharepvn(src, len, hash);
4920 #if defined(PERL_IMPLICIT_CONTEXT)
4922 Perl_newSVpvf_nocontext(const char* pat, ...)
4927 va_start(args, pat);
4928 sv = vnewSVpvf(pat, &args);
4935 =for apidoc newSVpvf
4937 Creates a new SV an initialize it with the string formatted like
4944 Perl_newSVpvf(pTHX_ const char* pat, ...)
4948 va_start(args, pat);
4949 sv = vnewSVpvf(pat, &args);
4955 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4959 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4966 Creates a new SV and copies a floating point value into it.
4967 The reference count for the SV is set to 1.
4973 Perl_newSVnv(pTHX_ NV n)
4985 Creates a new SV and copies an integer into it. The reference count for the
4992 Perl_newSViv(pTHX_ IV i)
5004 Creates a new SV and copies an unsigned integer into it.
5005 The reference count for the SV is set to 1.
5011 Perl_newSVuv(pTHX_ UV u)
5021 =for apidoc newRV_noinc
5023 Creates an RV wrapper for an SV. The reference count for the original
5024 SV is B<not> incremented.
5030 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5036 sv_upgrade(sv, SVt_RV);
5043 /* newRV_inc is #defined to newRV in sv.h */
5045 Perl_newRV(pTHX_ SV *tmpRef)
5047 return newRV_noinc(SvREFCNT_inc(tmpRef));
5053 Creates a new SV which is an exact duplicate of the original SV.
5058 /* make an exact duplicate of old */
5061 Perl_newSVsv(pTHX_ register SV *old)
5068 if (SvTYPE(old) == SVTYPEMASK) {
5069 if (ckWARN_d(WARN_INTERNAL))
5070 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5085 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5093 char todo[PERL_UCHAR_MAX+1];
5098 if (!*s) { /* reset ?? searches */
5099 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5100 pm->op_pmdynflags &= ~PMdf_USED;
5105 /* reset variables */
5107 if (!HvARRAY(stash))
5110 Zero(todo, 256, char);
5112 i = (unsigned char)*s;
5116 max = (unsigned char)*s++;
5117 for ( ; i <= max; i++) {
5120 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5121 for (entry = HvARRAY(stash)[i];
5123 entry = HeNEXT(entry))
5125 if (!todo[(U8)*HeKEY(entry)])
5127 gv = (GV*)HeVAL(entry);
5129 if (SvTHINKFIRST(sv)) {
5130 if (!SvREADONLY(sv) && SvROK(sv))
5135 if (SvTYPE(sv) >= SVt_PV) {
5137 if (SvPVX(sv) != Nullch)
5144 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5146 #ifdef USE_ENVIRON_ARRAY
5148 environ[0] = Nullch;
5157 Perl_sv_2io(pTHX_ SV *sv)
5163 switch (SvTYPE(sv)) {
5171 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5175 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5177 return sv_2io(SvRV(sv));
5178 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5184 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5191 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5198 return *gvp = Nullgv, Nullcv;
5199 switch (SvTYPE(sv)) {
5219 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5220 tryAMAGICunDEREF(to_cv);
5223 if (SvTYPE(sv) == SVt_PVCV) {
5232 Perl_croak(aTHX_ "Not a subroutine reference");
5237 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5243 if (lref && !GvCVu(gv)) {
5246 tmpsv = NEWSV(704,0);
5247 gv_efullname3(tmpsv, gv, Nullch);
5248 /* XXX this is probably not what they think they're getting.
5249 * It has the same effect as "sub name;", i.e. just a forward
5251 newSUB(start_subparse(FALSE, 0),
5252 newSVOP(OP_CONST, 0, tmpsv),
5257 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5266 Returns true if the SV has a true value by Perl's rules.
5272 Perl_sv_true(pTHX_ register SV *sv)
5279 if ((tXpv = (XPV*)SvANY(sv)) &&
5280 (tXpv->xpv_cur > 1 ||
5281 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5288 return SvIVX(sv) != 0;
5291 return SvNVX(sv) != 0.0;
5293 return sv_2bool(sv);
5299 Perl_sv_iv(pTHX_ register SV *sv)
5303 return (IV)SvUVX(sv);
5310 Perl_sv_uv(pTHX_ register SV *sv)
5315 return (UV)SvIVX(sv);
5321 Perl_sv_nv(pTHX_ register SV *sv)
5329 Perl_sv_pv(pTHX_ SV *sv)
5336 return sv_2pv(sv, &n_a);
5340 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5346 return sv_2pv(sv, lp);
5350 =for apidoc sv_pvn_force
5352 Get a sensible string out of the SV somehow.
5358 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5362 if (SvTHINKFIRST(sv) && !SvROK(sv))
5363 sv_force_normal(sv);
5369 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5371 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5372 PL_op_name[PL_op->op_type]);
5376 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5381 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5382 SvGROW(sv, len + 1);
5383 Move(s,SvPVX(sv),len,char);
5388 SvPOK_on(sv); /* validate pointer */
5390 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5391 PTR2UV(sv),SvPVX(sv)));
5398 Perl_sv_pvbyte(pTHX_ SV *sv)
5404 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5406 return sv_pvn(sv,lp);
5410 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5412 return sv_pvn_force(sv,lp);
5416 Perl_sv_pvutf8(pTHX_ SV *sv)
5418 sv_utf8_upgrade(sv);
5423 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5425 sv_utf8_upgrade(sv);
5426 return sv_pvn(sv,lp);
5430 =for apidoc sv_pvutf8n_force
5432 Get a sensible UTF8-encoded string out of the SV somehow. See
5439 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5441 sv_utf8_upgrade(sv);
5442 return sv_pvn_force(sv,lp);
5446 =for apidoc sv_reftype
5448 Returns a string describing what the SV is a reference to.
5454 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5456 if (ob && SvOBJECT(sv))
5457 return HvNAME(SvSTASH(sv));
5459 switch (SvTYPE(sv)) {
5473 case SVt_PVLV: return "LVALUE";
5474 case SVt_PVAV: return "ARRAY";
5475 case SVt_PVHV: return "HASH";
5476 case SVt_PVCV: return "CODE";
5477 case SVt_PVGV: return "GLOB";
5478 case SVt_PVFM: return "FORMAT";
5479 case SVt_PVIO: return "IO";
5480 default: return "UNKNOWN";
5486 =for apidoc sv_isobject
5488 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5489 object. If the SV is not an RV, or if the object is not blessed, then this
5496 Perl_sv_isobject(pTHX_ SV *sv)
5513 Returns a boolean indicating whether the SV is blessed into the specified
5514 class. This does not check for subtypes; use C<sv_derived_from> to verify
5515 an inheritance relationship.
5521 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5533 return strEQ(HvNAME(SvSTASH(sv)), name);
5539 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5540 it will be upgraded to one. If C<classname> is non-null then the new SV will
5541 be blessed in the specified package. The new SV is returned and its
5542 reference count is 1.
5548 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5555 SV_CHECK_THINKFIRST(rv);
5558 if (SvTYPE(rv) >= SVt_PVMG) {
5559 U32 refcnt = SvREFCNT(rv);
5563 SvREFCNT(rv) = refcnt;
5566 if (SvTYPE(rv) < SVt_RV)
5567 sv_upgrade(rv, SVt_RV);
5568 else if (SvTYPE(rv) > SVt_RV) {
5569 (void)SvOOK_off(rv);
5570 if (SvPVX(rv) && SvLEN(rv))
5571 Safefree(SvPVX(rv));
5581 HV* stash = gv_stashpv(classname, TRUE);
5582 (void)sv_bless(rv, stash);
5588 =for apidoc sv_setref_pv
5590 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5591 argument will be upgraded to an RV. That RV will be modified to point to
5592 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5593 into the SV. The C<classname> argument indicates the package for the
5594 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5595 will be returned and will have a reference count of 1.
5597 Do not use with other Perl types such as HV, AV, SV, CV, because those
5598 objects will become corrupted by the pointer copy process.
5600 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5606 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5609 sv_setsv(rv, &PL_sv_undef);
5613 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5618 =for apidoc sv_setref_iv
5620 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5621 argument will be upgraded to an RV. That RV will be modified to point to
5622 the new SV. The C<classname> argument indicates the package for the
5623 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5624 will be returned and will have a reference count of 1.
5630 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5632 sv_setiv(newSVrv(rv,classname), iv);
5637 =for apidoc sv_setref_nv
5639 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5640 argument will be upgraded to an RV. That RV will be modified to point to
5641 the new SV. The C<classname> argument indicates the package for the
5642 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5643 will be returned and will have a reference count of 1.
5649 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5651 sv_setnv(newSVrv(rv,classname), nv);
5656 =for apidoc sv_setref_pvn
5658 Copies a string into a new SV, optionally blessing the SV. The length of the
5659 string must be specified with C<n>. The C<rv> argument will be upgraded to
5660 an RV. That RV will be modified to point to the new SV. The C<classname>
5661 argument indicates the package for the blessing. Set C<classname> to
5662 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5663 a reference count of 1.
5665 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5671 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5673 sv_setpvn(newSVrv(rv,classname), pv, n);
5678 =for apidoc sv_bless
5680 Blesses an SV into a specified package. The SV must be an RV. The package
5681 must be designated by its stash (see C<gv_stashpv()>). The reference count
5682 of the SV is unaffected.
5688 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5693 Perl_croak(aTHX_ "Can't bless non-reference value");
5695 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5696 if (SvREADONLY(tmpRef))
5697 Perl_croak(aTHX_ PL_no_modify);
5698 if (SvOBJECT(tmpRef)) {
5699 if (SvTYPE(tmpRef) != SVt_PVIO)
5701 SvREFCNT_dec(SvSTASH(tmpRef));
5704 SvOBJECT_on(tmpRef);
5705 if (SvTYPE(tmpRef) != SVt_PVIO)
5707 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5708 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5719 S_sv_unglob(pTHX_ SV *sv)
5723 assert(SvTYPE(sv) == SVt_PVGV);
5728 SvREFCNT_dec(GvSTASH(sv));
5729 GvSTASH(sv) = Nullhv;
5731 sv_unmagic(sv, '*');
5732 Safefree(GvNAME(sv));
5735 /* need to keep SvANY(sv) in the right arena */
5736 xpvmg = new_XPVMG();
5737 StructCopy(SvANY(sv), xpvmg, XPVMG);
5738 del_XPVGV(SvANY(sv));
5741 SvFLAGS(sv) &= ~SVTYPEMASK;
5742 SvFLAGS(sv) |= SVt_PVMG;
5746 =for apidoc sv_unref
5748 Unsets the RV status of the SV, and decrements the reference count of
5749 whatever was being referenced by the RV. This can almost be thought of
5750 as a reversal of C<newSVrv>. See C<SvROK_off>.
5756 Perl_sv_unref(pTHX_ SV *sv)
5760 if (SvWEAKREF(sv)) {
5768 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5771 sv_2mortal(rv); /* Schedule for freeing later */
5775 Perl_sv_taint(pTHX_ SV *sv)
5777 sv_magic((sv), Nullsv, 't', Nullch, 0);
5781 Perl_sv_untaint(pTHX_ SV *sv)
5783 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5784 MAGIC *mg = mg_find(sv, 't');
5791 Perl_sv_tainted(pTHX_ SV *sv)
5793 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5794 MAGIC *mg = mg_find(sv, 't');
5795 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5802 =for apidoc sv_setpviv
5804 Copies an integer into the given SV, also updating its string value.
5805 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5811 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5813 char buf[TYPE_CHARS(UV)];
5815 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5817 sv_setpvn(sv, ptr, ebuf - ptr);
5822 =for apidoc sv_setpviv_mg
5824 Like C<sv_setpviv>, but also handles 'set' magic.
5830 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5832 char buf[TYPE_CHARS(UV)];
5834 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5836 sv_setpvn(sv, ptr, ebuf - ptr);
5840 #if defined(PERL_IMPLICIT_CONTEXT)
5842 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5846 va_start(args, pat);
5847 sv_vsetpvf(sv, pat, &args);
5853 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5857 va_start(args, pat);
5858 sv_vsetpvf_mg(sv, pat, &args);
5864 =for apidoc sv_setpvf
5866 Processes its arguments like C<sprintf> and sets an SV to the formatted
5867 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5873 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5876 va_start(args, pat);
5877 sv_vsetpvf(sv, pat, &args);
5882 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5884 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5888 =for apidoc sv_setpvf_mg
5890 Like C<sv_setpvf>, but also handles 'set' magic.
5896 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5899 va_start(args, pat);
5900 sv_vsetpvf_mg(sv, pat, &args);
5905 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5907 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5911 #if defined(PERL_IMPLICIT_CONTEXT)
5913 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5917 va_start(args, pat);
5918 sv_vcatpvf(sv, pat, &args);
5923 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5927 va_start(args, pat);
5928 sv_vcatpvf_mg(sv, pat, &args);
5934 =for apidoc sv_catpvf
5936 Processes its arguments like C<sprintf> and appends the formatted output
5937 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5938 typically be called after calling this function to handle 'set' magic.
5944 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5947 va_start(args, pat);
5948 sv_vcatpvf(sv, pat, &args);
5953 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5955 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5959 =for apidoc sv_catpvf_mg
5961 Like C<sv_catpvf>, but also handles 'set' magic.
5967 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5970 va_start(args, pat);
5971 sv_vcatpvf_mg(sv, pat, &args);
5976 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5978 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5983 =for apidoc sv_vsetpvfn
5985 Works like C<vcatpvfn> but copies the text into the SV instead of
5992 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5994 sv_setpvn(sv, "", 0);
5995 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5999 =for apidoc sv_vcatpvfn
6001 Processes its arguments like C<vsprintf> and appends the formatted output
6002 to an SV. Uses an array of SVs if the C style variable argument list is
6003 missing (NULL). When running with taint checks enabled, indicates via
6004 C<maybe_tainted> if results are untrustworthy (often due to the use of
6011 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6019 static char nullstr[] = "(null)";
6022 /* no matter what, this is a string now */
6023 (void)SvPV_force(sv, origlen);
6025 /* special-case "", "%s", and "%_" */
6028 if (patlen == 2 && pat[0] == '%') {
6032 char *s = va_arg(*args, char*);
6033 sv_catpv(sv, s ? s : nullstr);
6035 else if (svix < svmax) {
6036 sv_catsv(sv, *svargs);
6037 if (DO_UTF8(*svargs))
6043 argsv = va_arg(*args, SV*);
6044 sv_catsv(sv, argsv);
6049 /* See comment on '_' below */
6054 patend = (char*)pat + patlen;
6055 for (p = (char*)pat; p < patend; p = q) {
6058 bool vectorize = FALSE;
6065 bool has_precis = FALSE;
6067 bool is_utf = FALSE;
6070 U8 utf8buf[UTF8_MAXLEN];
6071 STRLEN esignlen = 0;
6073 char *eptr = Nullch;
6075 /* Times 4: a decimal digit takes more than 3 binary digits.
6076 * NV_DIG: mantissa takes than many decimal digits.
6077 * Plus 32: Playing safe. */
6078 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6079 /* large enough for "%#.#f" --chip */
6080 /* what about long double NVs? --jhi */
6083 U8 *vecstr = Null(U8*);
6095 STRLEN dotstrlen = 1;
6096 I32 epix = 0; /* explicit parameter index */
6097 I32 ewix = 0; /* explicit width index */
6098 bool asterisk = FALSE;
6100 for (q = p; q < patend && *q != '%'; ++q) ;
6102 sv_catpvn(sv, p, q - p);
6131 case '*': /* printf("%*vX",":",$ipv6addr) */
6136 vecsv = va_arg(*args, SV*);
6137 else if (svix < svmax)
6138 vecsv = svargs[svix++];
6141 dotstr = SvPVx(vecsv,dotstrlen);
6169 case '1': case '2': case '3':
6170 case '4': case '5': case '6':
6171 case '7': case '8': case '9':
6174 width = width * 10 + (*q++ - '0');
6176 if (asterisk && ewix == 0) {
6181 } else if (epix == 0) {
6193 i = va_arg(*args, int);
6195 i = (ewix ? ewix <= svmax : svix < svmax) ?
6196 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6198 width = (i < 0) ? -i : i;
6207 i = va_arg(*args, int);
6209 i = (ewix ? ewix <= svmax : svix < svmax)
6210 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6211 precis = (i < 0) ? 0 : i;
6217 precis = precis * 10 + (*q++ - '0');
6224 vecsv = va_arg(*args, SV*);
6225 vecstr = (U8*)SvPVx(vecsv,veclen);
6226 utf = DO_UTF8(vecsv);
6228 else if (epix ? epix <= svmax : svix < svmax) {
6229 vecsv = svargs[epix ? epix-1 : svix++];
6230 vecstr = (U8*)SvPVx(vecsv,veclen);
6231 utf = DO_UTF8(vecsv);
6242 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6253 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6254 if (*(q + 1) == 'l') { /* lld, llf */
6281 uv = va_arg(*args, int);
6283 uv = (epix ? epix <= svmax : svix < svmax) ?
6284 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6285 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6286 eptr = (char*)utf8buf;
6287 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6299 eptr = va_arg(*args, char*);
6301 #ifdef MACOS_TRADITIONAL
6302 /* On MacOS, %#s format is used for Pascal strings */
6307 elen = strlen(eptr);
6310 elen = sizeof nullstr - 1;
6313 else if (epix ? epix <= svmax : svix < svmax) {
6314 argsv = svargs[epix ? epix-1 : svix++];
6315 eptr = SvPVx(argsv, elen);
6316 if (DO_UTF8(argsv)) {
6317 if (has_precis && precis < elen) {
6319 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6322 if (width) { /* fudge width (can't fudge elen) */
6323 width += elen - sv_len_utf8(argsv);
6332 * The "%_" hack might have to be changed someday,
6333 * if ISO or ANSI decide to use '_' for something.
6334 * So we keep it hidden from users' code.
6338 argsv = va_arg(*args,SV*);
6339 eptr = SvPVx(argsv, elen);
6345 if (has_precis && elen > precis)
6355 uv = PTR2UV(va_arg(*args, void*));
6357 uv = (epix ? epix <= svmax : svix < svmax) ?
6358 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6378 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6388 case 'h': iv = (short)va_arg(*args, int); break;
6389 default: iv = va_arg(*args, int); break;
6390 case 'l': iv = va_arg(*args, long); break;
6391 case 'V': iv = va_arg(*args, IV); break;
6393 case 'q': iv = va_arg(*args, Quad_t); break;
6398 iv = (epix ? epix <= svmax : svix < svmax) ?
6399 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6401 case 'h': iv = (short)iv; break;
6403 case 'l': iv = (long)iv; break;
6406 case 'q': iv = (Quad_t)iv; break;
6413 esignbuf[esignlen++] = plus;
6417 esignbuf[esignlen++] = '-';
6461 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6471 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6472 default: uv = va_arg(*args, unsigned); break;
6473 case 'l': uv = va_arg(*args, unsigned long); break;
6474 case 'V': uv = va_arg(*args, UV); break;
6476 case 'q': uv = va_arg(*args, Quad_t); break;
6481 uv = (epix ? epix <= svmax : svix < svmax) ?
6482 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6484 case 'h': uv = (unsigned short)uv; break;
6486 case 'l': uv = (unsigned long)uv; break;
6489 case 'q': uv = (Quad_t)uv; break;
6495 eptr = ebuf + sizeof ebuf;
6501 p = (char*)((c == 'X')
6502 ? "0123456789ABCDEF" : "0123456789abcdef");
6508 esignbuf[esignlen++] = '0';
6509 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6515 *--eptr = '0' + dig;
6517 if (alt && *eptr != '0')
6523 *--eptr = '0' + dig;
6526 esignbuf[esignlen++] = '0';
6527 esignbuf[esignlen++] = 'b';
6530 default: /* it had better be ten or less */
6531 #if defined(PERL_Y2KWARN)
6532 if (ckWARN(WARN_Y2K)) {
6534 char *s = SvPV(sv,n);
6535 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6536 && (n == 2 || !isDIGIT(s[n-3])))
6538 Perl_warner(aTHX_ WARN_Y2K,
6539 "Possible Y2K bug: %%%c %s",
6540 c, "format string following '19'");
6546 *--eptr = '0' + dig;
6547 } while (uv /= base);
6550 elen = (ebuf + sizeof ebuf) - eptr;
6553 zeros = precis - elen;
6554 else if (precis == 0 && elen == 1 && *eptr == '0')
6559 /* FLOATING POINT */
6562 c = 'f'; /* maybe %F isn't supported here */
6568 /* This is evil, but floating point is even more evil */
6572 nv = va_arg(*args, NV);
6574 nv = (epix ? epix <= svmax : svix < svmax) ?
6575 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6578 if (c != 'e' && c != 'E') {
6580 (void)Perl_frexp(nv, &i);
6581 if (i == PERL_INT_MIN)
6582 Perl_die(aTHX_ "panic: frexp");
6584 need = BIT_DIGITS(i);
6586 need += has_precis ? precis : 6; /* known default */
6590 need += 20; /* fudge factor */
6591 if (PL_efloatsize < need) {
6592 Safefree(PL_efloatbuf);
6593 PL_efloatsize = need + 20; /* more fudge */
6594 New(906, PL_efloatbuf, PL_efloatsize, char);
6595 PL_efloatbuf[0] = '\0';
6598 eptr = ebuf + sizeof ebuf;
6601 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6603 /* Copy the one or more characters in a long double
6604 * format before the 'base' ([efgEFG]) character to
6605 * the format string. */
6606 static char const prifldbl[] = PERL_PRIfldbl;
6607 char const *p = prifldbl + sizeof(prifldbl) - 3;
6608 while (p >= prifldbl) { *--eptr = *p--; }
6613 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6618 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6630 /* No taint. Otherwise we are in the strange situation
6631 * where printf() taints but print($float) doesn't.
6633 (void)sprintf(PL_efloatbuf, eptr, nv);
6635 eptr = PL_efloatbuf;
6636 elen = strlen(PL_efloatbuf);
6643 i = SvCUR(sv) - origlen;
6646 case 'h': *(va_arg(*args, short*)) = i; break;
6647 default: *(va_arg(*args, int*)) = i; break;
6648 case 'l': *(va_arg(*args, long*)) = i; break;
6649 case 'V': *(va_arg(*args, IV*)) = i; break;
6651 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6655 else if (epix ? epix <= svmax : svix < svmax)
6656 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6657 continue; /* not "break" */
6664 if (!args && ckWARN(WARN_PRINTF) &&
6665 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6666 SV *msg = sv_newmortal();
6667 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6668 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6671 Perl_sv_catpvf(aTHX_ msg,
6672 "\"%%%c\"", c & 0xFF);
6674 Perl_sv_catpvf(aTHX_ msg,
6675 "\"%%\\%03"UVof"\"",
6678 sv_catpv(msg, "end of string");
6679 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6682 /* output mangled stuff ... */
6688 /* ... right here, because formatting flags should not apply */
6689 SvGROW(sv, SvCUR(sv) + elen + 1);
6691 memcpy(p, eptr, elen);
6694 SvCUR(sv) = p - SvPVX(sv);
6695 continue; /* not "break" */
6698 have = esignlen + zeros + elen;
6699 need = (have > width ? have : width);
6702 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6704 if (esignlen && fill == '0') {
6705 for (i = 0; i < esignlen; i++)
6709 memset(p, fill, gap);
6712 if (esignlen && fill != '0') {
6713 for (i = 0; i < esignlen; i++)
6717 for (i = zeros; i; i--)
6721 memcpy(p, eptr, elen);
6725 memset(p, ' ', gap);
6730 memcpy(p, dotstr, dotstrlen);
6734 vectorize = FALSE; /* done iterating over vecstr */
6739 SvCUR(sv) = p - SvPVX(sv);
6747 #if defined(USE_ITHREADS)
6749 #if defined(USE_THREADS)
6750 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6753 #ifndef GpREFCNT_inc
6754 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6758 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6759 #define av_dup(s) (AV*)sv_dup((SV*)s)
6760 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6761 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6762 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6763 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6764 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6765 #define io_dup(s) (IO*)sv_dup((SV*)s)
6766 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6767 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6768 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6769 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6770 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6773 Perl_re_dup(pTHX_ REGEXP *r)
6775 /* XXX fix when pmop->op_pmregexp becomes shared */
6776 return ReREFCNT_inc(r);
6780 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6784 return (PerlIO*)NULL;
6786 /* look for it in the table first */
6787 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6791 /* create anew and remember what it is */
6792 ret = PerlIO_fdupopen(fp);
6793 ptr_table_store(PL_ptr_table, fp, ret);
6798 Perl_dirp_dup(pTHX_ DIR *dp)
6807 Perl_gp_dup(pTHX_ GP *gp)
6812 /* look for it in the table first */
6813 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6817 /* create anew and remember what it is */
6818 Newz(0, ret, 1, GP);
6819 ptr_table_store(PL_ptr_table, gp, ret);
6822 ret->gp_refcnt = 0; /* must be before any other dups! */
6823 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6824 ret->gp_io = io_dup_inc(gp->gp_io);
6825 ret->gp_form = cv_dup_inc(gp->gp_form);
6826 ret->gp_av = av_dup_inc(gp->gp_av);
6827 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6828 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6829 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6830 ret->gp_cvgen = gp->gp_cvgen;
6831 ret->gp_flags = gp->gp_flags;
6832 ret->gp_line = gp->gp_line;
6833 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6838 Perl_mg_dup(pTHX_ MAGIC *mg)
6840 MAGIC *mgret = (MAGIC*)NULL;
6843 return (MAGIC*)NULL;
6844 /* look for it in the table first */
6845 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6849 for (; mg; mg = mg->mg_moremagic) {
6851 Newz(0, nmg, 1, MAGIC);
6855 mgprev->mg_moremagic = nmg;
6856 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6857 nmg->mg_private = mg->mg_private;
6858 nmg->mg_type = mg->mg_type;
6859 nmg->mg_flags = mg->mg_flags;
6860 if (mg->mg_type == 'r') {
6861 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6864 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6865 ? sv_dup_inc(mg->mg_obj)
6866 : sv_dup(mg->mg_obj);
6868 nmg->mg_len = mg->mg_len;
6869 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6870 if (mg->mg_ptr && mg->mg_type != 'g') {
6871 if (mg->mg_len >= 0) {
6872 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6873 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6874 AMT *amtp = (AMT*)mg->mg_ptr;
6875 AMT *namtp = (AMT*)nmg->mg_ptr;
6877 for (i = 1; i < NofAMmeth; i++) {
6878 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6882 else if (mg->mg_len == HEf_SVKEY)
6883 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6891 Perl_ptr_table_new(pTHX)
6894 Newz(0, tbl, 1, PTR_TBL_t);
6897 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6902 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6904 PTR_TBL_ENT_t *tblent;
6905 UV hash = PTR2UV(sv);
6907 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6908 for (; tblent; tblent = tblent->next) {
6909 if (tblent->oldval == sv)
6910 return tblent->newval;
6916 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6918 PTR_TBL_ENT_t *tblent, **otblent;
6919 /* XXX this may be pessimal on platforms where pointers aren't good
6920 * hash values e.g. if they grow faster in the most significant
6922 UV hash = PTR2UV(oldv);
6926 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6927 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6928 if (tblent->oldval == oldv) {
6929 tblent->newval = newv;
6934 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6935 tblent->oldval = oldv;
6936 tblent->newval = newv;
6937 tblent->next = *otblent;
6940 if (i && tbl->tbl_items > tbl->tbl_max)
6941 ptr_table_split(tbl);
6945 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6947 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6948 UV oldsize = tbl->tbl_max + 1;
6949 UV newsize = oldsize * 2;
6952 Renew(ary, newsize, PTR_TBL_ENT_t*);
6953 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6954 tbl->tbl_max = --newsize;
6956 for (i=0; i < oldsize; i++, ary++) {
6957 PTR_TBL_ENT_t **curentp, **entp, *ent;
6960 curentp = ary + oldsize;
6961 for (entp = ary, ent = *ary; ent; ent = *entp) {
6962 if ((newsize & PTR2UV(ent->oldval)) != i) {
6964 ent->next = *curentp;
6979 Perl_sv_dup(pTHX_ SV *sstr)
6983 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6985 /* look for it in the table first */
6986 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6990 /* create anew and remember what it is */
6992 ptr_table_store(PL_ptr_table, sstr, dstr);
6995 SvFLAGS(dstr) = SvFLAGS(sstr);
6996 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6997 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7000 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7001 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7002 PL_watch_pvx, SvPVX(sstr));
7005 switch (SvTYPE(sstr)) {
7010 SvANY(dstr) = new_XIV();
7011 SvIVX(dstr) = SvIVX(sstr);
7014 SvANY(dstr) = new_XNV();
7015 SvNVX(dstr) = SvNVX(sstr);
7018 SvANY(dstr) = new_XRV();
7019 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7022 SvANY(dstr) = new_XPV();
7023 SvCUR(dstr) = SvCUR(sstr);
7024 SvLEN(dstr) = SvLEN(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_XPVIV();
7034 SvCUR(dstr) = SvCUR(sstr);
7035 SvLEN(dstr) = SvLEN(sstr);
7036 SvIVX(dstr) = SvIVX(sstr);
7038 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7039 else if (SvPVX(sstr) && SvLEN(sstr))
7040 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7042 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7045 SvANY(dstr) = new_XPVNV();
7046 SvCUR(dstr) = SvCUR(sstr);
7047 SvLEN(dstr) = SvLEN(sstr);
7048 SvIVX(dstr) = SvIVX(sstr);
7049 SvNVX(dstr) = SvNVX(sstr);
7051 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7052 else if (SvPVX(sstr) && SvLEN(sstr))
7053 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7055 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7058 SvANY(dstr) = new_XPVMG();
7059 SvCUR(dstr) = SvCUR(sstr);
7060 SvLEN(dstr) = SvLEN(sstr);
7061 SvIVX(dstr) = SvIVX(sstr);
7062 SvNVX(dstr) = SvNVX(sstr);
7063 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7064 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7066 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7067 else if (SvPVX(sstr) && SvLEN(sstr))
7068 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7070 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7073 SvANY(dstr) = new_XPVBM();
7074 SvCUR(dstr) = SvCUR(sstr);
7075 SvLEN(dstr) = SvLEN(sstr);
7076 SvIVX(dstr) = SvIVX(sstr);
7077 SvNVX(dstr) = SvNVX(sstr);
7078 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7079 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7081 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7082 else if (SvPVX(sstr) && SvLEN(sstr))
7083 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7085 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7086 BmRARE(dstr) = BmRARE(sstr);
7087 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7088 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7091 SvANY(dstr) = new_XPVLV();
7092 SvCUR(dstr) = SvCUR(sstr);
7093 SvLEN(dstr) = SvLEN(sstr);
7094 SvIVX(dstr) = SvIVX(sstr);
7095 SvNVX(dstr) = SvNVX(sstr);
7096 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7097 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7099 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7100 else if (SvPVX(sstr) && SvLEN(sstr))
7101 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7103 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7104 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7105 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7106 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7107 LvTYPE(dstr) = LvTYPE(sstr);
7110 SvANY(dstr) = new_XPVGV();
7111 SvCUR(dstr) = SvCUR(sstr);
7112 SvLEN(dstr) = SvLEN(sstr);
7113 SvIVX(dstr) = SvIVX(sstr);
7114 SvNVX(dstr) = SvNVX(sstr);
7115 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7116 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7118 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7119 else if (SvPVX(sstr) && SvLEN(sstr))
7120 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7122 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7123 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7124 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7125 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7126 GvFLAGS(dstr) = GvFLAGS(sstr);
7127 GvGP(dstr) = gp_dup(GvGP(sstr));
7128 (void)GpREFCNT_inc(GvGP(dstr));
7131 SvANY(dstr) = new_XPVIO();
7132 SvCUR(dstr) = SvCUR(sstr);
7133 SvLEN(dstr) = SvLEN(sstr);
7134 SvIVX(dstr) = SvIVX(sstr);
7135 SvNVX(dstr) = SvNVX(sstr);
7136 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7137 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7139 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7140 else if (SvPVX(sstr) && SvLEN(sstr))
7141 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7143 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7144 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7145 if (IoOFP(sstr) == IoIFP(sstr))
7146 IoOFP(dstr) = IoIFP(dstr);
7148 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7149 /* PL_rsfp_filters entries have fake IoDIRP() */
7150 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7151 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7153 IoDIRP(dstr) = IoDIRP(sstr);
7154 IoLINES(dstr) = IoLINES(sstr);
7155 IoPAGE(dstr) = IoPAGE(sstr);
7156 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7157 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7158 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7159 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7160 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7161 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7162 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7163 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7164 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7165 IoTYPE(dstr) = IoTYPE(sstr);
7166 IoFLAGS(dstr) = IoFLAGS(sstr);
7169 SvANY(dstr) = new_XPVAV();
7170 SvCUR(dstr) = SvCUR(sstr);
7171 SvLEN(dstr) = SvLEN(sstr);
7172 SvIVX(dstr) = SvIVX(sstr);
7173 SvNVX(dstr) = SvNVX(sstr);
7174 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7175 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7176 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7177 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7178 if (AvARRAY((AV*)sstr)) {
7179 SV **dst_ary, **src_ary;
7180 SSize_t items = AvFILLp((AV*)sstr) + 1;
7182 src_ary = AvARRAY((AV*)sstr);
7183 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7184 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7185 SvPVX(dstr) = (char*)dst_ary;
7186 AvALLOC((AV*)dstr) = dst_ary;
7187 if (AvREAL((AV*)sstr)) {
7189 *dst_ary++ = sv_dup_inc(*src_ary++);
7193 *dst_ary++ = sv_dup(*src_ary++);
7195 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7196 while (items-- > 0) {
7197 *dst_ary++ = &PL_sv_undef;
7201 SvPVX(dstr) = Nullch;
7202 AvALLOC((AV*)dstr) = (SV**)NULL;
7206 SvANY(dstr) = new_XPVHV();
7207 SvCUR(dstr) = SvCUR(sstr);
7208 SvLEN(dstr) = SvLEN(sstr);
7209 SvIVX(dstr) = SvIVX(sstr);
7210 SvNVX(dstr) = SvNVX(sstr);
7211 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7212 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7213 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7214 if (HvARRAY((HV*)sstr)) {
7216 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7217 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7218 Newz(0, dxhv->xhv_array,
7219 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7220 while (i <= sxhv->xhv_max) {
7221 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7222 !!HvSHAREKEYS(sstr));
7225 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7228 SvPVX(dstr) = Nullch;
7229 HvEITER((HV*)dstr) = (HE*)NULL;
7231 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7232 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7235 SvANY(dstr) = new_XPVFM();
7236 FmLINES(dstr) = FmLINES(sstr);
7240 SvANY(dstr) = new_XPVCV();
7242 SvCUR(dstr) = SvCUR(sstr);
7243 SvLEN(dstr) = SvLEN(sstr);
7244 SvIVX(dstr) = SvIVX(sstr);
7245 SvNVX(dstr) = SvNVX(sstr);
7246 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7247 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7248 if (SvPVX(sstr) && SvLEN(sstr))
7249 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7251 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7252 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7253 CvSTART(dstr) = CvSTART(sstr);
7254 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7255 CvXSUB(dstr) = CvXSUB(sstr);
7256 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7257 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7258 CvDEPTH(dstr) = CvDEPTH(sstr);
7259 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7260 /* XXX padlists are real, but pretend to be not */
7261 AvREAL_on(CvPADLIST(sstr));
7262 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7263 AvREAL_off(CvPADLIST(sstr));
7264 AvREAL_off(CvPADLIST(dstr));
7267 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7268 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7269 CvFLAGS(dstr) = CvFLAGS(sstr);
7272 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7276 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7283 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7288 return (PERL_CONTEXT*)NULL;
7290 /* look for it in the table first */
7291 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7295 /* create anew and remember what it is */
7296 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7297 ptr_table_store(PL_ptr_table, cxs, ncxs);
7300 PERL_CONTEXT *cx = &cxs[ix];
7301 PERL_CONTEXT *ncx = &ncxs[ix];
7302 ncx->cx_type = cx->cx_type;
7303 if (CxTYPE(cx) == CXt_SUBST) {
7304 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7307 ncx->blk_oldsp = cx->blk_oldsp;
7308 ncx->blk_oldcop = cx->blk_oldcop;
7309 ncx->blk_oldretsp = cx->blk_oldretsp;
7310 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7311 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7312 ncx->blk_oldpm = cx->blk_oldpm;
7313 ncx->blk_gimme = cx->blk_gimme;
7314 switch (CxTYPE(cx)) {
7316 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7317 ? cv_dup_inc(cx->blk_sub.cv)
7318 : cv_dup(cx->blk_sub.cv));
7319 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7320 ? av_dup_inc(cx->blk_sub.argarray)
7322 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7323 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7324 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7325 ncx->blk_sub.lval = cx->blk_sub.lval;
7328 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7329 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7330 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7331 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7332 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7335 ncx->blk_loop.label = cx->blk_loop.label;
7336 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7337 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7338 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7339 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7340 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7341 ? cx->blk_loop.iterdata
7342 : gv_dup((GV*)cx->blk_loop.iterdata));
7343 ncx->blk_loop.oldcurpad
7344 = (SV**)ptr_table_fetch(PL_ptr_table,
7345 cx->blk_loop.oldcurpad);
7346 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7347 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7348 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7349 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7350 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7353 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7354 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7355 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7356 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7369 Perl_si_dup(pTHX_ PERL_SI *si)
7374 return (PERL_SI*)NULL;
7376 /* look for it in the table first */
7377 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7381 /* create anew and remember what it is */
7382 Newz(56, nsi, 1, PERL_SI);
7383 ptr_table_store(PL_ptr_table, si, nsi);
7385 nsi->si_stack = av_dup_inc(si->si_stack);
7386 nsi->si_cxix = si->si_cxix;
7387 nsi->si_cxmax = si->si_cxmax;
7388 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7389 nsi->si_type = si->si_type;
7390 nsi->si_prev = si_dup(si->si_prev);
7391 nsi->si_next = si_dup(si->si_next);
7392 nsi->si_markoff = si->si_markoff;
7397 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7398 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7399 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7400 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7401 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7402 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7403 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7404 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7405 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7406 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7407 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7408 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7411 #define pv_dup_inc(p) SAVEPV(p)
7412 #define pv_dup(p) SAVEPV(p)
7413 #define svp_dup_inc(p,pp) any_dup(p,pp)
7416 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7423 /* look for it in the table first */
7424 ret = ptr_table_fetch(PL_ptr_table, v);
7428 /* see if it is part of the interpreter structure */
7429 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7430 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7438 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7440 ANY *ss = proto_perl->Tsavestack;
7441 I32 ix = proto_perl->Tsavestack_ix;
7442 I32 max = proto_perl->Tsavestack_max;
7455 void (*dptr) (void*);
7456 void (*dxptr) (pTHXo_ void*);
7459 Newz(54, nss, max, ANY);
7465 case SAVEt_ITEM: /* normal string */
7466 sv = (SV*)POPPTR(ss,ix);
7467 TOPPTR(nss,ix) = sv_dup_inc(sv);
7468 sv = (SV*)POPPTR(ss,ix);
7469 TOPPTR(nss,ix) = sv_dup_inc(sv);
7471 case SAVEt_SV: /* scalar reference */
7472 sv = (SV*)POPPTR(ss,ix);
7473 TOPPTR(nss,ix) = sv_dup_inc(sv);
7474 gv = (GV*)POPPTR(ss,ix);
7475 TOPPTR(nss,ix) = gv_dup_inc(gv);
7477 case SAVEt_GENERIC_PVREF: /* generic char* */
7478 c = (char*)POPPTR(ss,ix);
7479 TOPPTR(nss,ix) = pv_dup(c);
7480 ptr = POPPTR(ss,ix);
7481 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7483 case SAVEt_GENERIC_SVREF: /* generic sv */
7484 case SAVEt_SVREF: /* scalar reference */
7485 sv = (SV*)POPPTR(ss,ix);
7486 TOPPTR(nss,ix) = sv_dup_inc(sv);
7487 ptr = POPPTR(ss,ix);
7488 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7490 case SAVEt_AV: /* array reference */
7491 av = (AV*)POPPTR(ss,ix);
7492 TOPPTR(nss,ix) = av_dup_inc(av);
7493 gv = (GV*)POPPTR(ss,ix);
7494 TOPPTR(nss,ix) = gv_dup(gv);
7496 case SAVEt_HV: /* hash reference */
7497 hv = (HV*)POPPTR(ss,ix);
7498 TOPPTR(nss,ix) = hv_dup_inc(hv);
7499 gv = (GV*)POPPTR(ss,ix);
7500 TOPPTR(nss,ix) = gv_dup(gv);
7502 case SAVEt_INT: /* int reference */
7503 ptr = POPPTR(ss,ix);
7504 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7505 intval = (int)POPINT(ss,ix);
7506 TOPINT(nss,ix) = intval;
7508 case SAVEt_LONG: /* long reference */
7509 ptr = POPPTR(ss,ix);
7510 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7511 longval = (long)POPLONG(ss,ix);
7512 TOPLONG(nss,ix) = longval;
7514 case SAVEt_I32: /* I32 reference */
7515 case SAVEt_I16: /* I16 reference */
7516 case SAVEt_I8: /* I8 reference */
7517 ptr = POPPTR(ss,ix);
7518 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7522 case SAVEt_IV: /* IV reference */
7523 ptr = POPPTR(ss,ix);
7524 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7528 case SAVEt_SPTR: /* SV* reference */
7529 ptr = POPPTR(ss,ix);
7530 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7531 sv = (SV*)POPPTR(ss,ix);
7532 TOPPTR(nss,ix) = sv_dup(sv);
7534 case SAVEt_VPTR: /* random* reference */
7535 ptr = POPPTR(ss,ix);
7536 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7537 ptr = POPPTR(ss,ix);
7538 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7540 case SAVEt_PPTR: /* char* reference */
7541 ptr = POPPTR(ss,ix);
7542 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7543 c = (char*)POPPTR(ss,ix);
7544 TOPPTR(nss,ix) = pv_dup(c);
7546 case SAVEt_HPTR: /* HV* reference */
7547 ptr = POPPTR(ss,ix);
7548 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7549 hv = (HV*)POPPTR(ss,ix);
7550 TOPPTR(nss,ix) = hv_dup(hv);
7552 case SAVEt_APTR: /* AV* reference */
7553 ptr = POPPTR(ss,ix);
7554 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7555 av = (AV*)POPPTR(ss,ix);
7556 TOPPTR(nss,ix) = av_dup(av);
7559 gv = (GV*)POPPTR(ss,ix);
7560 TOPPTR(nss,ix) = gv_dup(gv);
7562 case SAVEt_GP: /* scalar reference */
7563 gp = (GP*)POPPTR(ss,ix);
7564 TOPPTR(nss,ix) = gp = gp_dup(gp);
7565 (void)GpREFCNT_inc(gp);
7566 gv = (GV*)POPPTR(ss,ix);
7567 TOPPTR(nss,ix) = gv_dup_inc(c);
7568 c = (char*)POPPTR(ss,ix);
7569 TOPPTR(nss,ix) = pv_dup(c);
7576 sv = (SV*)POPPTR(ss,ix);
7577 TOPPTR(nss,ix) = sv_dup_inc(sv);
7580 ptr = POPPTR(ss,ix);
7581 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7582 /* these are assumed to be refcounted properly */
7583 switch (((OP*)ptr)->op_type) {
7590 TOPPTR(nss,ix) = ptr;
7595 TOPPTR(nss,ix) = Nullop;
7600 TOPPTR(nss,ix) = Nullop;
7603 c = (char*)POPPTR(ss,ix);
7604 TOPPTR(nss,ix) = pv_dup_inc(c);
7607 longval = POPLONG(ss,ix);
7608 TOPLONG(nss,ix) = longval;
7611 hv = (HV*)POPPTR(ss,ix);
7612 TOPPTR(nss,ix) = hv_dup_inc(hv);
7613 c = (char*)POPPTR(ss,ix);
7614 TOPPTR(nss,ix) = pv_dup_inc(c);
7618 case SAVEt_DESTRUCTOR:
7619 ptr = POPPTR(ss,ix);
7620 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7621 dptr = POPDPTR(ss,ix);
7622 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7624 case SAVEt_DESTRUCTOR_X:
7625 ptr = POPPTR(ss,ix);
7626 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7627 dxptr = POPDXPTR(ss,ix);
7628 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7630 case SAVEt_REGCONTEXT:
7636 case SAVEt_STACK_POS: /* Position on Perl stack */
7640 case SAVEt_AELEM: /* array element */
7641 sv = (SV*)POPPTR(ss,ix);
7642 TOPPTR(nss,ix) = sv_dup_inc(sv);
7645 av = (AV*)POPPTR(ss,ix);
7646 TOPPTR(nss,ix) = av_dup_inc(av);
7648 case SAVEt_HELEM: /* hash element */
7649 sv = (SV*)POPPTR(ss,ix);
7650 TOPPTR(nss,ix) = sv_dup_inc(sv);
7651 sv = (SV*)POPPTR(ss,ix);
7652 TOPPTR(nss,ix) = sv_dup_inc(sv);
7653 hv = (HV*)POPPTR(ss,ix);
7654 TOPPTR(nss,ix) = hv_dup_inc(hv);
7657 ptr = POPPTR(ss,ix);
7658 TOPPTR(nss,ix) = ptr;
7665 av = (AV*)POPPTR(ss,ix);
7666 TOPPTR(nss,ix) = av_dup(av);
7669 longval = (long)POPLONG(ss,ix);
7670 TOPLONG(nss,ix) = longval;
7671 ptr = POPPTR(ss,ix);
7672 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7673 sv = (SV*)POPPTR(ss,ix);
7674 TOPPTR(nss,ix) = sv_dup(sv);
7677 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7689 perl_clone(PerlInterpreter *proto_perl, UV flags)
7692 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7695 #ifdef PERL_IMPLICIT_SYS
7696 return perl_clone_using(proto_perl, flags,
7698 proto_perl->IMemShared,
7699 proto_perl->IMemParse,
7709 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7710 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7711 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7712 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7713 struct IPerlDir* ipD, struct IPerlSock* ipS,
7714 struct IPerlProc* ipP)
7716 /* XXX many of the string copies here can be optimized if they're
7717 * constants; they need to be allocated as common memory and just
7718 * their pointers copied. */
7722 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7724 PERL_SET_THX(pPerl);
7725 # else /* !PERL_OBJECT */
7726 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7727 PERL_SET_THX(my_perl);
7730 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7735 # else /* !DEBUGGING */
7736 Zero(my_perl, 1, PerlInterpreter);
7737 # endif /* DEBUGGING */
7741 PL_MemShared = ipMS;
7749 # endif /* PERL_OBJECT */
7750 #else /* !PERL_IMPLICIT_SYS */
7752 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7753 PERL_SET_THX(my_perl);
7756 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7761 # else /* !DEBUGGING */
7762 Zero(my_perl, 1, PerlInterpreter);
7763 # endif /* DEBUGGING */
7764 #endif /* PERL_IMPLICIT_SYS */
7767 PL_xiv_arenaroot = NULL;
7769 PL_xnv_arenaroot = NULL;
7771 PL_xrv_arenaroot = NULL;
7773 PL_xpv_arenaroot = NULL;
7775 PL_xpviv_arenaroot = NULL;
7776 PL_xpviv_root = NULL;
7777 PL_xpvnv_arenaroot = NULL;
7778 PL_xpvnv_root = NULL;
7779 PL_xpvcv_arenaroot = NULL;
7780 PL_xpvcv_root = NULL;
7781 PL_xpvav_arenaroot = NULL;
7782 PL_xpvav_root = NULL;
7783 PL_xpvhv_arenaroot = NULL;
7784 PL_xpvhv_root = NULL;
7785 PL_xpvmg_arenaroot = NULL;
7786 PL_xpvmg_root = NULL;
7787 PL_xpvlv_arenaroot = NULL;
7788 PL_xpvlv_root = NULL;
7789 PL_xpvbm_arenaroot = NULL;
7790 PL_xpvbm_root = NULL;
7791 PL_he_arenaroot = NULL;
7793 PL_nice_chunk = NULL;
7794 PL_nice_chunk_size = 0;
7797 PL_sv_root = Nullsv;
7798 PL_sv_arenaroot = Nullsv;
7800 PL_debug = proto_perl->Idebug;
7802 /* create SV map for pointer relocation */
7803 PL_ptr_table = ptr_table_new();
7805 /* initialize these special pointers as early as possible */
7806 SvANY(&PL_sv_undef) = NULL;
7807 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7808 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7809 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7812 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7814 SvANY(&PL_sv_no) = new_XPVNV();
7816 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7817 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7818 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7819 SvCUR(&PL_sv_no) = 0;
7820 SvLEN(&PL_sv_no) = 1;
7821 SvNVX(&PL_sv_no) = 0;
7822 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7825 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7827 SvANY(&PL_sv_yes) = new_XPVNV();
7829 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7830 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7831 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7832 SvCUR(&PL_sv_yes) = 1;
7833 SvLEN(&PL_sv_yes) = 2;
7834 SvNVX(&PL_sv_yes) = 1;
7835 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7837 /* create shared string table */
7838 PL_strtab = newHV();
7839 HvSHAREKEYS_off(PL_strtab);
7840 hv_ksplit(PL_strtab, 512);
7841 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7843 PL_compiling = proto_perl->Icompiling;
7844 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7845 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7846 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7847 if (!specialWARN(PL_compiling.cop_warnings))
7848 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7849 if (!specialCopIO(PL_compiling.cop_io))
7850 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
7851 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7853 /* pseudo environmental stuff */
7854 PL_origargc = proto_perl->Iorigargc;
7856 New(0, PL_origargv, i+1, char*);
7857 PL_origargv[i] = '\0';
7859 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7861 PL_envgv = gv_dup(proto_perl->Ienvgv);
7862 PL_incgv = gv_dup(proto_perl->Iincgv);
7863 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7864 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7865 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7866 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7869 PL_minus_c = proto_perl->Iminus_c;
7870 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7871 PL_localpatches = proto_perl->Ilocalpatches;
7872 PL_splitstr = proto_perl->Isplitstr;
7873 PL_preprocess = proto_perl->Ipreprocess;
7874 PL_minus_n = proto_perl->Iminus_n;
7875 PL_minus_p = proto_perl->Iminus_p;
7876 PL_minus_l = proto_perl->Iminus_l;
7877 PL_minus_a = proto_perl->Iminus_a;
7878 PL_minus_F = proto_perl->Iminus_F;
7879 PL_doswitches = proto_perl->Idoswitches;
7880 PL_dowarn = proto_perl->Idowarn;
7881 PL_doextract = proto_perl->Idoextract;
7882 PL_sawampersand = proto_perl->Isawampersand;
7883 PL_unsafe = proto_perl->Iunsafe;
7884 PL_inplace = SAVEPV(proto_perl->Iinplace);
7885 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7886 PL_perldb = proto_perl->Iperldb;
7887 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7889 /* magical thingies */
7890 /* XXX time(&PL_basetime) when asked for? */
7891 PL_basetime = proto_perl->Ibasetime;
7892 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7894 PL_maxsysfd = proto_perl->Imaxsysfd;
7895 PL_multiline = proto_perl->Imultiline;
7896 PL_statusvalue = proto_perl->Istatusvalue;
7898 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7901 /* shortcuts to various I/O objects */
7902 PL_stdingv = gv_dup(proto_perl->Istdingv);
7903 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7904 PL_defgv = gv_dup(proto_perl->Idefgv);
7905 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7906 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7907 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7909 /* shortcuts to regexp stuff */
7910 PL_replgv = gv_dup(proto_perl->Ireplgv);
7912 /* shortcuts to misc objects */
7913 PL_errgv = gv_dup(proto_perl->Ierrgv);
7915 /* shortcuts to debugging objects */
7916 PL_DBgv = gv_dup(proto_perl->IDBgv);
7917 PL_DBline = gv_dup(proto_perl->IDBline);
7918 PL_DBsub = gv_dup(proto_perl->IDBsub);
7919 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7920 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7921 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7922 PL_lineary = av_dup(proto_perl->Ilineary);
7923 PL_dbargs = av_dup(proto_perl->Idbargs);
7926 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7927 PL_curstash = hv_dup(proto_perl->Tcurstash);
7928 PL_debstash = hv_dup(proto_perl->Idebstash);
7929 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7930 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7932 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7933 PL_endav = av_dup_inc(proto_perl->Iendav);
7934 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7935 PL_initav = av_dup_inc(proto_perl->Iinitav);
7937 PL_sub_generation = proto_perl->Isub_generation;
7939 /* funky return mechanisms */
7940 PL_forkprocess = proto_perl->Iforkprocess;
7942 /* subprocess state */
7943 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7945 /* internal state */
7946 PL_tainting = proto_perl->Itainting;
7947 PL_maxo = proto_perl->Imaxo;
7948 if (proto_perl->Iop_mask)
7949 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7951 PL_op_mask = Nullch;
7953 /* current interpreter roots */
7954 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7955 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7956 PL_main_start = proto_perl->Imain_start;
7957 PL_eval_root = proto_perl->Ieval_root;
7958 PL_eval_start = proto_perl->Ieval_start;
7960 /* runtime control stuff */
7961 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7962 PL_copline = proto_perl->Icopline;
7964 PL_filemode = proto_perl->Ifilemode;
7965 PL_lastfd = proto_perl->Ilastfd;
7966 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7969 PL_gensym = proto_perl->Igensym;
7970 PL_preambled = proto_perl->Ipreambled;
7971 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7972 PL_laststatval = proto_perl->Ilaststatval;
7973 PL_laststype = proto_perl->Ilaststype;
7974 PL_mess_sv = Nullsv;
7976 PL_orslen = proto_perl->Iorslen;
7977 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7978 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7980 /* interpreter atexit processing */
7981 PL_exitlistlen = proto_perl->Iexitlistlen;
7982 if (PL_exitlistlen) {
7983 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7984 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7987 PL_exitlist = (PerlExitListEntry*)NULL;
7988 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7990 PL_profiledata = NULL;
7991 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7992 /* PL_rsfp_filters entries have fake IoDIRP() */
7993 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7995 PL_compcv = cv_dup(proto_perl->Icompcv);
7996 PL_comppad = av_dup(proto_perl->Icomppad);
7997 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7998 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7999 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8000 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8001 proto_perl->Tcurpad);
8003 #ifdef HAVE_INTERP_INTERN
8004 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8007 /* more statics moved here */
8008 PL_generation = proto_perl->Igeneration;
8009 PL_DBcv = cv_dup(proto_perl->IDBcv);
8011 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8012 PL_in_clean_all = proto_perl->Iin_clean_all;
8014 PL_uid = proto_perl->Iuid;
8015 PL_euid = proto_perl->Ieuid;
8016 PL_gid = proto_perl->Igid;
8017 PL_egid = proto_perl->Iegid;
8018 PL_nomemok = proto_perl->Inomemok;
8019 PL_an = proto_perl->Ian;
8020 PL_cop_seqmax = proto_perl->Icop_seqmax;
8021 PL_op_seqmax = proto_perl->Iop_seqmax;
8022 PL_evalseq = proto_perl->Ievalseq;
8023 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8024 PL_origalen = proto_perl->Iorigalen;
8025 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8026 PL_osname = SAVEPV(proto_perl->Iosname);
8027 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8028 PL_sighandlerp = proto_perl->Isighandlerp;
8031 PL_runops = proto_perl->Irunops;
8033 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8036 PL_cshlen = proto_perl->Icshlen;
8037 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8040 PL_lex_state = proto_perl->Ilex_state;
8041 PL_lex_defer = proto_perl->Ilex_defer;
8042 PL_lex_expect = proto_perl->Ilex_expect;
8043 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8044 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8045 PL_lex_starts = proto_perl->Ilex_starts;
8046 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8047 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8048 PL_lex_op = proto_perl->Ilex_op;
8049 PL_lex_inpat = proto_perl->Ilex_inpat;
8050 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8051 PL_lex_brackets = proto_perl->Ilex_brackets;
8052 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8053 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8054 PL_lex_casemods = proto_perl->Ilex_casemods;
8055 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8056 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8058 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8059 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8060 PL_nexttoke = proto_perl->Inexttoke;
8062 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8063 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8064 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8065 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8066 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8067 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8068 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8069 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8070 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8071 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8072 PL_pending_ident = proto_perl->Ipending_ident;
8073 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8075 PL_expect = proto_perl->Iexpect;
8077 PL_multi_start = proto_perl->Imulti_start;
8078 PL_multi_end = proto_perl->Imulti_end;
8079 PL_multi_open = proto_perl->Imulti_open;
8080 PL_multi_close = proto_perl->Imulti_close;
8082 PL_error_count = proto_perl->Ierror_count;
8083 PL_subline = proto_perl->Isubline;
8084 PL_subname = sv_dup_inc(proto_perl->Isubname);
8086 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8087 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8088 PL_padix = proto_perl->Ipadix;
8089 PL_padix_floor = proto_perl->Ipadix_floor;
8090 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8092 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8093 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8094 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8095 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8096 PL_last_lop_op = proto_perl->Ilast_lop_op;
8097 PL_in_my = proto_perl->Iin_my;
8098 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8100 PL_cryptseen = proto_perl->Icryptseen;
8103 PL_hints = proto_perl->Ihints;
8105 PL_amagic_generation = proto_perl->Iamagic_generation;
8107 #ifdef USE_LOCALE_COLLATE
8108 PL_collation_ix = proto_perl->Icollation_ix;
8109 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8110 PL_collation_standard = proto_perl->Icollation_standard;
8111 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8112 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8113 #endif /* USE_LOCALE_COLLATE */
8115 #ifdef USE_LOCALE_NUMERIC
8116 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8117 PL_numeric_standard = proto_perl->Inumeric_standard;
8118 PL_numeric_local = proto_perl->Inumeric_local;
8119 PL_numeric_radix = proto_perl->Inumeric_radix;
8120 #endif /* !USE_LOCALE_NUMERIC */
8122 /* utf8 character classes */
8123 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8124 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8125 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8126 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8127 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8128 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8129 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8130 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8131 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8132 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8133 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8134 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8135 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8136 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8137 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8138 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8139 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8142 PL_last_swash_hv = Nullhv; /* reinits on demand */
8143 PL_last_swash_klen = 0;
8144 PL_last_swash_key[0]= '\0';
8145 PL_last_swash_tmps = (U8*)NULL;
8146 PL_last_swash_slen = 0;
8148 /* perly.c globals */
8149 PL_yydebug = proto_perl->Iyydebug;
8150 PL_yynerrs = proto_perl->Iyynerrs;
8151 PL_yyerrflag = proto_perl->Iyyerrflag;
8152 PL_yychar = proto_perl->Iyychar;
8153 PL_yyval = proto_perl->Iyyval;
8154 PL_yylval = proto_perl->Iyylval;
8156 PL_glob_index = proto_perl->Iglob_index;
8157 PL_srand_called = proto_perl->Isrand_called;
8158 PL_uudmap['M'] = 0; /* reinits on demand */
8159 PL_bitcount = Nullch; /* reinits on demand */
8161 if (proto_perl->Ipsig_ptr) {
8162 int sig_num[] = { SIG_NUM };
8163 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8164 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8165 for (i = 1; PL_sig_name[i]; i++) {
8166 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8167 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8171 PL_psig_ptr = (SV**)NULL;
8172 PL_psig_name = (SV**)NULL;
8175 /* thrdvar.h stuff */
8178 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8179 PL_tmps_ix = proto_perl->Ttmps_ix;
8180 PL_tmps_max = proto_perl->Ttmps_max;
8181 PL_tmps_floor = proto_perl->Ttmps_floor;
8182 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8184 while (i <= PL_tmps_ix) {
8185 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8189 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8190 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8191 Newz(54, PL_markstack, i, I32);
8192 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8193 - proto_perl->Tmarkstack);
8194 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8195 - proto_perl->Tmarkstack);
8196 Copy(proto_perl->Tmarkstack, PL_markstack,
8197 PL_markstack_ptr - PL_markstack + 1, I32);
8199 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8200 * NOTE: unlike the others! */
8201 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8202 PL_scopestack_max = proto_perl->Tscopestack_max;
8203 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8204 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8206 /* next push_return() sets PL_retstack[PL_retstack_ix]
8207 * NOTE: unlike the others! */
8208 PL_retstack_ix = proto_perl->Tretstack_ix;
8209 PL_retstack_max = proto_perl->Tretstack_max;
8210 Newz(54, PL_retstack, PL_retstack_max, OP*);
8211 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8213 /* NOTE: si_dup() looks at PL_markstack */
8214 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8216 /* PL_curstack = PL_curstackinfo->si_stack; */
8217 PL_curstack = av_dup(proto_perl->Tcurstack);
8218 PL_mainstack = av_dup(proto_perl->Tmainstack);
8220 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8221 PL_stack_base = AvARRAY(PL_curstack);
8222 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8223 - proto_perl->Tstack_base);
8224 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8226 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8227 * NOTE: unlike the others! */
8228 PL_savestack_ix = proto_perl->Tsavestack_ix;
8229 PL_savestack_max = proto_perl->Tsavestack_max;
8230 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8231 PL_savestack = ss_dup(proto_perl);
8235 ENTER; /* perl_destruct() wants to LEAVE; */
8238 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8239 PL_top_env = &PL_start_env;
8241 PL_op = proto_perl->Top;
8244 PL_Xpv = (XPV*)NULL;
8245 PL_na = proto_perl->Tna;
8247 PL_statbuf = proto_perl->Tstatbuf;
8248 PL_statcache = proto_perl->Tstatcache;
8249 PL_statgv = gv_dup(proto_perl->Tstatgv);
8250 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8252 PL_timesbuf = proto_perl->Ttimesbuf;
8255 PL_tainted = proto_perl->Ttainted;
8256 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8257 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8258 PL_rs = sv_dup_inc(proto_perl->Trs);
8259 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8260 PL_ofslen = proto_perl->Tofslen;
8261 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8262 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8263 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8264 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8265 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8266 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8268 PL_restartop = proto_perl->Trestartop;
8269 PL_in_eval = proto_perl->Tin_eval;
8270 PL_delaymagic = proto_perl->Tdelaymagic;
8271 PL_dirty = proto_perl->Tdirty;
8272 PL_localizing = proto_perl->Tlocalizing;
8274 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8275 PL_protect = proto_perl->Tprotect;
8277 PL_errors = sv_dup_inc(proto_perl->Terrors);
8278 PL_av_fetch_sv = Nullsv;
8279 PL_hv_fetch_sv = Nullsv;
8280 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8281 PL_modcount = proto_perl->Tmodcount;
8282 PL_lastgotoprobe = Nullop;
8283 PL_dumpindent = proto_perl->Tdumpindent;
8285 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8286 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8287 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8288 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8289 PL_sortcxix = proto_perl->Tsortcxix;
8290 PL_efloatbuf = Nullch; /* reinits on demand */
8291 PL_efloatsize = 0; /* reinits on demand */
8295 PL_screamfirst = NULL;
8296 PL_screamnext = NULL;
8297 PL_maxscream = -1; /* reinits on demand */
8298 PL_lastscream = Nullsv;
8300 PL_watchaddr = NULL;
8301 PL_watchok = Nullch;
8303 PL_regdummy = proto_perl->Tregdummy;
8304 PL_regcomp_parse = Nullch;
8305 PL_regxend = Nullch;
8306 PL_regcode = (regnode*)NULL;
8309 PL_regprecomp = Nullch;
8314 PL_seen_zerolen = 0;
8316 PL_regcomp_rx = (regexp*)NULL;
8318 PL_colorset = 0; /* reinits PL_colors[] */
8319 /*PL_colors[6] = {0,0,0,0,0,0};*/
8320 PL_reg_whilem_seen = 0;
8321 PL_reginput = Nullch;
8324 PL_regstartp = (I32*)NULL;
8325 PL_regendp = (I32*)NULL;
8326 PL_reglastparen = (U32*)NULL;
8327 PL_regtill = Nullch;
8329 PL_reg_start_tmp = (char**)NULL;
8330 PL_reg_start_tmpl = 0;
8331 PL_regdata = (struct reg_data*)NULL;
8334 PL_reg_eval_set = 0;
8336 PL_regprogram = (regnode*)NULL;
8338 PL_regcc = (CURCUR*)NULL;
8339 PL_reg_call_cc = (struct re_cc_state*)NULL;
8340 PL_reg_re = (regexp*)NULL;
8341 PL_reg_ganch = Nullch;
8343 PL_reg_magic = (MAGIC*)NULL;
8345 PL_reg_oldcurpm = (PMOP*)NULL;
8346 PL_reg_curpm = (PMOP*)NULL;
8347 PL_reg_oldsaved = Nullch;
8348 PL_reg_oldsavedlen = 0;
8350 PL_reg_leftiter = 0;
8351 PL_reg_poscache = Nullch;
8352 PL_reg_poscache_size= 0;
8354 /* RE engine - function pointers */
8355 PL_regcompp = proto_perl->Tregcompp;
8356 PL_regexecp = proto_perl->Tregexecp;
8357 PL_regint_start = proto_perl->Tregint_start;
8358 PL_regint_string = proto_perl->Tregint_string;
8359 PL_regfree = proto_perl->Tregfree;
8361 PL_reginterp_cnt = 0;
8362 PL_reg_starttry = 0;
8365 return (PerlInterpreter*)pPerl;
8371 #else /* !USE_ITHREADS */
8377 #endif /* USE_ITHREADS */
8380 do_report_used(pTHXo_ SV *sv)
8382 if (SvTYPE(sv) != SVTYPEMASK) {
8383 PerlIO_printf(Perl_debug_log, "****\n");
8389 do_clean_objs(pTHXo_ SV *sv)
8393 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8394 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8395 if (SvWEAKREF(sv)) {
8406 /* XXX Might want to check arrays, etc. */
8409 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8411 do_clean_named_objs(pTHXo_ SV *sv)
8413 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8414 if ( SvOBJECT(GvSV(sv)) ||
8415 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8416 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8417 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8418 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8420 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8428 do_clean_all(pTHXo_ SV *sv)
8430 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8431 SvFLAGS(sv) |= SVf_BREAK;