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) && !SvOK(sv)) {
1502 if (ckWARN(WARN_UNINITIALIZED))
1509 return (IV)(SvUVX(sv));
1516 /* We can cache the IV/UV value even if it not good enough
1517 * to reconstruct NV, since the conversion to PV will prefer
1521 if (SvTYPE(sv) == SVt_NV)
1522 sv_upgrade(sv, SVt_PVNV);
1525 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1526 SvIVX(sv) = I_V(SvNVX(sv));
1528 SvUVX(sv) = U_V(SvNVX(sv));
1531 DEBUG_c(PerlIO_printf(Perl_debug_log,
1532 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1536 return (IV)SvUVX(sv);
1539 else if (SvPOKp(sv) && SvLEN(sv)) {
1540 I32 numtype = looks_like_number(sv);
1542 /* We want to avoid a possible problem when we cache an IV which
1543 may be later translated to an NV, and the resulting NV is not
1544 the translation of the initial data.
1546 This means that if we cache such an IV, we need to cache the
1547 NV as well. Moreover, we trade speed for space, and do not
1548 cache the NV if not needed.
1550 if (numtype & IS_NUMBER_NOT_IV) {
1551 /* May be not an integer. Need to cache NV if we cache IV
1552 * - otherwise future conversion to NV will be wrong. */
1555 d = Atof(SvPVX(sv));
1557 if (SvTYPE(sv) < SVt_PVNV)
1558 sv_upgrade(sv, SVt_PVNV);
1562 #if defined(USE_LONG_DOUBLE)
1563 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1564 PTR2UV(sv), SvNVX(sv)));
1566 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1567 PTR2UV(sv), SvNVX(sv)));
1569 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1570 SvIVX(sv) = I_V(SvNVX(sv));
1572 SvUVX(sv) = U_V(SvNVX(sv));
1577 else { /* The NV may be reconstructed from IV - safe to cache IV,
1578 which may be calculated by atol(). */
1579 if (SvTYPE(sv) < SVt_PVIV)
1580 sv_upgrade(sv, SVt_PVIV);
1582 SvIVX(sv) = Atol(SvPVX(sv));
1583 if (! numtype && ckWARN(WARN_NUMERIC))
1589 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1591 if (SvTYPE(sv) < SVt_IV)
1592 /* Typically the caller expects that sv_any is not NULL now. */
1593 sv_upgrade(sv, SVt_IV);
1596 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1597 PTR2UV(sv),SvIVX(sv)));
1598 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1602 Perl_sv_2uv(pTHX_ register SV *sv)
1606 if (SvGMAGICAL(sv)) {
1611 return U_V(SvNVX(sv));
1612 if (SvPOKp(sv) && SvLEN(sv))
1615 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1617 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1623 if (SvTHINKFIRST(sv)) {
1626 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1627 (SvRV(tmpstr) != SvRV(sv)))
1628 return SvUV(tmpstr);
1629 return PTR2UV(SvRV(sv));
1631 if (SvREADONLY(sv) && !SvOK(sv)) {
1633 if (ckWARN(WARN_UNINITIALIZED))
1643 return (UV)SvIVX(sv);
1647 /* We can cache the IV/UV value even if it not good enough
1648 * to reconstruct NV, since the conversion to PV will prefer
1651 if (SvTYPE(sv) == SVt_NV)
1652 sv_upgrade(sv, SVt_PVNV);
1654 if (SvNVX(sv) >= -0.5) {
1656 SvUVX(sv) = U_V(SvNVX(sv));
1659 SvIVX(sv) = I_V(SvNVX(sv));
1661 DEBUG_c(PerlIO_printf(Perl_debug_log,
1662 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1665 (IV)(UV)SvIVX(sv)));
1666 return (UV)SvIVX(sv);
1669 else if (SvPOKp(sv) && SvLEN(sv)) {
1670 I32 numtype = looks_like_number(sv);
1672 /* We want to avoid a possible problem when we cache a UV which
1673 may be later translated to an NV, and the resulting NV is not
1674 the translation of the initial data.
1676 This means that if we cache such a UV, we need to cache the
1677 NV as well. Moreover, we trade speed for space, and do not
1678 cache the NV if not needed.
1680 if (numtype & IS_NUMBER_NOT_IV) {
1681 /* May be not an integer. Need to cache NV if we cache IV
1682 * - otherwise future conversion to NV will be wrong. */
1685 d = Atof(SvPVX(sv));
1687 if (SvTYPE(sv) < SVt_PVNV)
1688 sv_upgrade(sv, SVt_PVNV);
1692 #if defined(USE_LONG_DOUBLE)
1693 DEBUG_c(PerlIO_printf(Perl_debug_log,
1694 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1695 PTR2UV(sv), SvNVX(sv)));
1697 DEBUG_c(PerlIO_printf(Perl_debug_log,
1698 "0x%"UVxf" 2nv(%g)\n",
1699 PTR2UV(sv), SvNVX(sv)));
1701 if (SvNVX(sv) < -0.5) {
1702 SvIVX(sv) = I_V(SvNVX(sv));
1705 SvUVX(sv) = U_V(SvNVX(sv));
1709 else if (numtype & IS_NUMBER_NEG) {
1710 /* The NV may be reconstructed from IV - safe to cache IV,
1711 which may be calculated by atol(). */
1712 if (SvTYPE(sv) == SVt_PV)
1713 sv_upgrade(sv, SVt_PVIV);
1715 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1717 else if (numtype) { /* Non-negative */
1718 /* The NV may be reconstructed from UV - safe to cache UV,
1719 which may be calculated by strtoul()/atol. */
1720 if (SvTYPE(sv) == SVt_PV)
1721 sv_upgrade(sv, SVt_PVIV);
1723 (void)SvIsUV_on(sv);
1725 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1726 #else /* no atou(), but we know the number fits into IV... */
1727 /* The only problem may be if it is negative... */
1728 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1731 else { /* Not a number. Cache 0. */
1734 if (SvTYPE(sv) < SVt_PVIV)
1735 sv_upgrade(sv, SVt_PVIV);
1737 (void)SvIsUV_on(sv);
1738 SvUVX(sv) = 0; /* We assume that 0s have the
1739 same bitmap in IV and UV. */
1740 if (ckWARN(WARN_NUMERIC))
1745 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1747 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1750 if (SvTYPE(sv) < SVt_IV)
1751 /* Typically the caller expects that sv_any is not NULL now. */
1752 sv_upgrade(sv, SVt_IV);
1756 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1757 PTR2UV(sv),SvUVX(sv)));
1758 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1762 Perl_sv_2nv(pTHX_ register SV *sv)
1766 if (SvGMAGICAL(sv)) {
1770 if (SvPOKp(sv) && SvLEN(sv)) {
1772 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1774 return Atof(SvPVX(sv));
1778 return (NV)SvUVX(sv);
1780 return (NV)SvIVX(sv);
1783 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1785 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1791 if (SvTHINKFIRST(sv)) {
1794 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1795 (SvRV(tmpstr) != SvRV(sv)))
1796 return SvNV(tmpstr);
1797 return PTR2NV(SvRV(sv));
1799 if (SvREADONLY(sv) && !SvOK(sv)) {
1801 if (ckWARN(WARN_UNINITIALIZED))
1806 if (SvTYPE(sv) < SVt_NV) {
1807 if (SvTYPE(sv) == SVt_IV)
1808 sv_upgrade(sv, SVt_PVNV);
1810 sv_upgrade(sv, SVt_NV);
1811 #if defined(USE_LONG_DOUBLE)
1813 STORE_NUMERIC_LOCAL_SET_STANDARD();
1814 PerlIO_printf(Perl_debug_log,
1815 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1816 PTR2UV(sv), SvNVX(sv));
1817 RESTORE_NUMERIC_LOCAL();
1821 STORE_NUMERIC_LOCAL_SET_STANDARD();
1822 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1823 PTR2UV(sv), SvNVX(sv));
1824 RESTORE_NUMERIC_LOCAL();
1828 else if (SvTYPE(sv) < SVt_PVNV)
1829 sv_upgrade(sv, SVt_PVNV);
1831 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1833 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1835 else if (SvPOKp(sv) && SvLEN(sv)) {
1837 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1839 SvNVX(sv) = Atof(SvPVX(sv));
1843 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1845 if (SvTYPE(sv) < SVt_NV)
1846 /* Typically the caller expects that sv_any is not NULL now. */
1847 sv_upgrade(sv, SVt_NV);
1851 #if defined(USE_LONG_DOUBLE)
1853 STORE_NUMERIC_LOCAL_SET_STANDARD();
1854 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1855 PTR2UV(sv), SvNVX(sv));
1856 RESTORE_NUMERIC_LOCAL();
1860 STORE_NUMERIC_LOCAL_SET_STANDARD();
1861 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1862 PTR2UV(sv), SvNVX(sv));
1863 RESTORE_NUMERIC_LOCAL();
1870 S_asIV(pTHX_ SV *sv)
1872 I32 numtype = looks_like_number(sv);
1875 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1876 return Atol(SvPVX(sv));
1879 if (ckWARN(WARN_NUMERIC))
1882 d = Atof(SvPVX(sv));
1887 S_asUV(pTHX_ SV *sv)
1889 I32 numtype = looks_like_number(sv);
1892 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1893 return Strtoul(SvPVX(sv), Null(char**), 10);
1897 if (ckWARN(WARN_NUMERIC))
1900 return U_V(Atof(SvPVX(sv)));
1904 * Returns a combination of (advisory only - can get false negatives)
1905 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1907 * 0 if does not look like number.
1909 * In fact possible values are 0 and
1910 * IS_NUMBER_TO_INT_BY_ATOL 123
1911 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1912 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1913 * IS_NUMBER_INFINITY
1914 * with a possible addition of IS_NUMBER_NEG.
1918 =for apidoc looks_like_number
1920 Test if an the content of an SV looks like a number (or is a
1927 Perl_looks_like_number(pTHX_ SV *sv)
1930 register char *send;
1931 register char *sbegin;
1932 register char *nbegin;
1941 else if (SvPOKp(sv))
1942 sbegin = SvPV(sv, len);
1945 send = sbegin + len;
1952 numtype = IS_NUMBER_NEG;
1959 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1960 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1964 /* next must be digit or the radix separator or beginning of infinity */
1968 } while (isDIGIT(*s));
1970 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1971 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1973 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1976 #ifdef USE_LOCALE_NUMERIC
1977 || IS_NUMERIC_RADIX(*s)
1981 numtype |= IS_NUMBER_NOT_IV;
1982 while (isDIGIT(*s)) /* optional digits after the radix */
1987 #ifdef USE_LOCALE_NUMERIC
1988 || IS_NUMERIC_RADIX(*s)
1992 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1993 /* no digits before the radix means we need digits after it */
1997 } while (isDIGIT(*s));
2002 else if (*s == 'I' || *s == 'i') {
2003 s++; if (*s != 'N' && *s != 'n') return 0;
2004 s++; if (*s != 'F' && *s != 'f') return 0;
2005 s++; if (*s == 'I' || *s == 'i') {
2006 s++; if (*s != 'N' && *s != 'n') return 0;
2007 s++; if (*s != 'I' && *s != 'i') return 0;
2008 s++; if (*s != 'T' && *s != 't') return 0;
2009 s++; if (*s != 'Y' && *s != 'y') return 0;
2017 numtype = IS_NUMBER_INFINITY;
2019 /* we can have an optional exponent part */
2020 if (*s == 'e' || *s == 'E') {
2021 numtype &= ~IS_NUMBER_NEG;
2022 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2024 if (*s == '+' || *s == '-')
2029 } while (isDIGIT(*s));
2039 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2040 return IS_NUMBER_TO_INT_BY_ATOL;
2045 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2048 return sv_2pv(sv, &n_a);
2051 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2053 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2055 char *ptr = buf + TYPE_CHARS(UV);
2069 *--ptr = '0' + (uv % 10);
2078 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2083 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2084 char *tmpbuf = tbuf;
2090 if (SvGMAGICAL(sv)) {
2098 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2100 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2105 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2110 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2112 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2119 if (SvTHINKFIRST(sv)) {
2122 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2123 (SvRV(tmpstr) != SvRV(sv)))
2124 return SvPV(tmpstr,*lp);
2131 switch (SvTYPE(sv)) {
2133 if ( ((SvFLAGS(sv) &
2134 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2135 == (SVs_OBJECT|SVs_RMG))
2136 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2137 && (mg = mg_find(sv, 'r'))) {
2139 regexp *re = (regexp *)mg->mg_obj;
2142 char *fptr = "msix";
2147 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2149 while((ch = *fptr++)) {
2151 reflags[left++] = ch;
2154 reflags[right--] = ch;
2159 reflags[left] = '-';
2163 mg->mg_len = re->prelen + 4 + left;
2164 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2165 Copy("(?", mg->mg_ptr, 2, char);
2166 Copy(reflags, mg->mg_ptr+2, left, char);
2167 Copy(":", mg->mg_ptr+left+2, 1, char);
2168 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2169 mg->mg_ptr[mg->mg_len - 1] = ')';
2170 mg->mg_ptr[mg->mg_len] = 0;
2172 PL_reginterp_cnt += re->program[0].next_off;
2184 case SVt_PVBM: if (SvROK(sv))
2187 s = "SCALAR"; break;
2188 case SVt_PVLV: s = "LVALUE"; break;
2189 case SVt_PVAV: s = "ARRAY"; break;
2190 case SVt_PVHV: s = "HASH"; break;
2191 case SVt_PVCV: s = "CODE"; break;
2192 case SVt_PVGV: s = "GLOB"; break;
2193 case SVt_PVFM: s = "FORMAT"; break;
2194 case SVt_PVIO: s = "IO"; break;
2195 default: s = "UNKNOWN"; break;
2199 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2202 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2208 if (SvREADONLY(sv) && !SvOK(sv)) {
2210 if (ckWARN(WARN_UNINITIALIZED))
2216 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2217 /* XXXX 64-bit? IV may have better precision... */
2218 /* I tried changing this to be 64-bit-aware and
2219 * the t/op/numconvert.t became very, very, angry.
2221 if (SvTYPE(sv) < SVt_PVNV)
2222 sv_upgrade(sv, SVt_PVNV);
2223 /* The +20 is pure guesswork. Configure test needed. --jhi */
2224 SvGROW(sv, NV_DIG + 20);
2226 olderrno = errno; /* some Xenix systems wipe out errno here */
2228 if (SvNVX(sv) == 0.0)
2229 (void)strcpy(s,"0");
2233 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2236 #ifdef FIXNEGATIVEZERO
2237 if (*s == '-' && s[1] == '0' && !s[2])
2246 else if (SvIOKp(sv)) {
2247 U32 isIOK = SvIOK(sv);
2248 U32 isUIOK = SvIsUV(sv);
2249 char buf[TYPE_CHARS(UV)];
2252 if (SvTYPE(sv) < SVt_PVIV)
2253 sv_upgrade(sv, SVt_PVIV);
2255 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2257 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2258 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2259 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2260 SvCUR_set(sv, ebuf - ptr);
2273 if (ckWARN(WARN_UNINITIALIZED)
2274 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2279 if (SvTYPE(sv) < SVt_PV)
2280 /* Typically the caller expects that sv_any is not NULL now. */
2281 sv_upgrade(sv, SVt_PV);
2284 *lp = s - SvPVX(sv);
2287 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2288 PTR2UV(sv),SvPVX(sv)));
2292 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2293 /* Sneaky stuff here */
2297 tsv = newSVpv(tmpbuf, 0);
2313 len = strlen(tmpbuf);
2315 #ifdef FIXNEGATIVEZERO
2316 if (len == 2 && t[0] == '-' && t[1] == '0') {
2321 (void)SvUPGRADE(sv, SVt_PV);
2323 s = SvGROW(sv, len + 1);
2332 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2335 return sv_2pvbyte(sv, &n_a);
2339 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2341 return sv_2pv(sv,lp);
2345 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2348 return sv_2pvutf8(sv, &n_a);
2352 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2354 sv_utf8_upgrade(sv);
2355 return sv_2pv(sv,lp);
2358 /* This function is only called on magical items */
2360 Perl_sv_2bool(pTHX_ register SV *sv)
2370 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2371 (SvRV(tmpsv) != SvRV(sv)))
2372 return SvTRUE(tmpsv);
2373 return SvRV(sv) != 0;
2376 register XPV* Xpvtmp;
2377 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2378 (*Xpvtmp->xpv_pv > '0' ||
2379 Xpvtmp->xpv_cur > 1 ||
2380 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2387 return SvIVX(sv) != 0;
2390 return SvNVX(sv) != 0.0;
2398 =for apidoc sv_utf8_upgrade
2400 Convert the PV of an SV to its UTF8-encoded form.
2406 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2411 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2414 /* This function could be much more efficient if we had a FLAG in SVs
2415 * to signal if there are any hibit chars in the PV.
2417 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2422 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2423 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2424 SvCUR(sv) = len - 1;
2425 SvLEN(sv) = len; /* No longer know the real size. */
2427 Safefree(s); /* No longer using what was there before. */
2432 =for apidoc sv_utf8_downgrade
2434 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2435 This may not be possible if the PV contains non-byte encoding characters;
2436 if this is the case, either returns false or, if C<fail_ok> is not
2443 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2445 if (SvPOK(sv) && SvUTF8(sv)) {
2446 char *c = SvPVX(sv);
2447 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
2448 if (!utf8_to_bytes((U8*)c, &len)) {
2452 Perl_croak(aTHX_ "big byte");
2454 SvCUR(sv) = len - 1;
2461 =for apidoc sv_utf8_encode
2463 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2464 flag so that it looks like bytes again. Nothing calls this.
2470 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2472 sv_utf8_upgrade(sv);
2477 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2481 bool has_utf = FALSE;
2482 if (!sv_utf8_downgrade(sv, TRUE))
2485 /* it is actually just a matter of turning the utf8 flag on, but
2486 * we want to make sure everything inside is valid utf8 first.
2489 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2492 while (c < SvEND(sv)) {
2503 /* Note: sv_setsv() should not be called with a source string that needs
2504 * to be reused, since it may destroy the source string if it is marked
2509 =for apidoc sv_setsv
2511 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2512 The source SV may be destroyed if it is mortal. Does not handle 'set'
2513 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2520 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2523 register U32 sflags;
2529 SV_CHECK_THINKFIRST(dstr);
2531 sstr = &PL_sv_undef;
2532 stype = SvTYPE(sstr);
2533 dtype = SvTYPE(dstr);
2537 /* There's a lot of redundancy below but we're going for speed here */
2542 if (dtype != SVt_PVGV) {
2543 (void)SvOK_off(dstr);
2551 sv_upgrade(dstr, SVt_IV);
2554 sv_upgrade(dstr, SVt_PVNV);
2558 sv_upgrade(dstr, SVt_PVIV);
2561 (void)SvIOK_only(dstr);
2562 SvIVX(dstr) = SvIVX(sstr);
2575 sv_upgrade(dstr, SVt_NV);
2580 sv_upgrade(dstr, SVt_PVNV);
2583 SvNVX(dstr) = SvNVX(sstr);
2584 (void)SvNOK_only(dstr);
2592 sv_upgrade(dstr, SVt_RV);
2593 else if (dtype == SVt_PVGV &&
2594 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2597 if (GvIMPORTED(dstr) != GVf_IMPORTED
2598 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2600 GvIMPORTED_on(dstr);
2611 sv_upgrade(dstr, SVt_PV);
2614 if (dtype < SVt_PVIV)
2615 sv_upgrade(dstr, SVt_PVIV);
2618 if (dtype < SVt_PVNV)
2619 sv_upgrade(dstr, SVt_PVNV);
2626 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2627 PL_op_name[PL_op->op_type]);
2629 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2633 if (dtype <= SVt_PVGV) {
2635 if (dtype != SVt_PVGV) {
2636 char *name = GvNAME(sstr);
2637 STRLEN len = GvNAMELEN(sstr);
2638 sv_upgrade(dstr, SVt_PVGV);
2639 sv_magic(dstr, dstr, '*', Nullch, 0);
2640 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2641 GvNAME(dstr) = savepvn(name, len);
2642 GvNAMELEN(dstr) = len;
2643 SvFAKE_on(dstr); /* can coerce to non-glob */
2645 /* ahem, death to those who redefine active sort subs */
2646 else if (PL_curstackinfo->si_type == PERLSI_SORT
2647 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2648 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2650 (void)SvOK_off(dstr);
2651 GvINTRO_off(dstr); /* one-shot flag */
2653 GvGP(dstr) = gp_ref(GvGP(sstr));
2655 if (GvIMPORTED(dstr) != GVf_IMPORTED
2656 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2658 GvIMPORTED_on(dstr);
2666 if (SvGMAGICAL(sstr)) {
2668 if (SvTYPE(sstr) != stype) {
2669 stype = SvTYPE(sstr);
2670 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2674 if (stype == SVt_PVLV)
2675 (void)SvUPGRADE(dstr, SVt_PVNV);
2677 (void)SvUPGRADE(dstr, stype);
2680 sflags = SvFLAGS(sstr);
2682 if (sflags & SVf_ROK) {
2683 if (dtype >= SVt_PV) {
2684 if (dtype == SVt_PVGV) {
2685 SV *sref = SvREFCNT_inc(SvRV(sstr));
2687 int intro = GvINTRO(dstr);
2692 GvINTRO_off(dstr); /* one-shot flag */
2693 Newz(602,gp, 1, GP);
2694 GvGP(dstr) = gp_ref(gp);
2695 GvSV(dstr) = NEWSV(72,0);
2696 GvLINE(dstr) = CopLINE(PL_curcop);
2697 GvEGV(dstr) = (GV*)dstr;
2700 switch (SvTYPE(sref)) {
2703 SAVESPTR(GvAV(dstr));
2705 dref = (SV*)GvAV(dstr);
2706 GvAV(dstr) = (AV*)sref;
2707 if (!GvIMPORTED_AV(dstr)
2708 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2710 GvIMPORTED_AV_on(dstr);
2715 SAVESPTR(GvHV(dstr));
2717 dref = (SV*)GvHV(dstr);
2718 GvHV(dstr) = (HV*)sref;
2719 if (!GvIMPORTED_HV(dstr)
2720 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2722 GvIMPORTED_HV_on(dstr);
2727 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2728 SvREFCNT_dec(GvCV(dstr));
2729 GvCV(dstr) = Nullcv;
2730 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2731 PL_sub_generation++;
2733 SAVESPTR(GvCV(dstr));
2736 dref = (SV*)GvCV(dstr);
2737 if (GvCV(dstr) != (CV*)sref) {
2738 CV* cv = GvCV(dstr);
2740 if (!GvCVGEN((GV*)dstr) &&
2741 (CvROOT(cv) || CvXSUB(cv)))
2743 SV *const_sv = cv_const_sv(cv);
2744 bool const_changed = TRUE;
2746 const_changed = sv_cmp(const_sv,
2747 op_const_sv(CvSTART((CV*)sref),
2749 /* ahem, death to those who redefine
2750 * active sort subs */
2751 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2752 PL_sortcop == CvSTART(cv))
2754 "Can't redefine active sort subroutine %s",
2755 GvENAME((GV*)dstr));
2756 if ((const_changed && const_sv) || ckWARN(WARN_REDEFINE))
2757 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
2758 "Constant subroutine %s redefined"
2759 : "Subroutine %s redefined",
2760 GvENAME((GV*)dstr));
2762 cv_ckproto(cv, (GV*)dstr,
2763 SvPOK(sref) ? SvPVX(sref) : Nullch);
2765 GvCV(dstr) = (CV*)sref;
2766 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2767 GvASSUMECV_on(dstr);
2768 PL_sub_generation++;
2770 if (!GvIMPORTED_CV(dstr)
2771 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2773 GvIMPORTED_CV_on(dstr);
2778 SAVESPTR(GvIOp(dstr));
2780 dref = (SV*)GvIOp(dstr);
2781 GvIOp(dstr) = (IO*)sref;
2785 SAVESPTR(GvFORM(dstr));
2787 dref = (SV*)GvFORM(dstr);
2788 GvFORM(dstr) = (CV*)sref;
2792 SAVESPTR(GvSV(dstr));
2794 dref = (SV*)GvSV(dstr);
2796 if (!GvIMPORTED_SV(dstr)
2797 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2799 GvIMPORTED_SV_on(dstr);
2811 (void)SvOOK_off(dstr); /* backoff */
2813 Safefree(SvPVX(dstr));
2814 SvLEN(dstr)=SvCUR(dstr)=0;
2817 (void)SvOK_off(dstr);
2818 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2820 if (sflags & SVp_NOK) {
2822 SvNVX(dstr) = SvNVX(sstr);
2824 if (sflags & SVp_IOK) {
2825 (void)SvIOK_on(dstr);
2826 SvIVX(dstr) = SvIVX(sstr);
2827 if (sflags & SVf_IVisUV)
2830 if (SvAMAGIC(sstr)) {
2834 else if (sflags & SVp_POK) {
2837 * Check to see if we can just swipe the string. If so, it's a
2838 * possible small lose on short strings, but a big win on long ones.
2839 * It might even be a win on short strings if SvPVX(dstr)
2840 * has to be allocated and SvPVX(sstr) has to be freed.
2843 if (SvTEMP(sstr) && /* slated for free anyway? */
2844 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2845 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2846 SvLEN(sstr)) /* and really is a string */
2848 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2850 SvFLAGS(dstr) &= ~SVf_OOK;
2851 Safefree(SvPVX(dstr) - SvIVX(dstr));
2853 else if (SvLEN(dstr))
2854 Safefree(SvPVX(dstr));
2856 (void)SvPOK_only(dstr);
2857 SvPV_set(dstr, SvPVX(sstr));
2858 SvLEN_set(dstr, SvLEN(sstr));
2859 SvCUR_set(dstr, SvCUR(sstr));
2862 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2863 SvPV_set(sstr, Nullch);
2868 else { /* have to copy actual string */
2869 STRLEN len = SvCUR(sstr);
2871 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2872 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2873 SvCUR_set(dstr, len);
2874 *SvEND(dstr) = '\0';
2875 (void)SvPOK_only(dstr);
2877 if ((sflags & SVf_UTF8) && !IN_BYTE)
2880 if (sflags & SVp_NOK) {
2882 SvNVX(dstr) = SvNVX(sstr);
2884 if (sflags & SVp_IOK) {
2885 (void)SvIOK_on(dstr);
2886 SvIVX(dstr) = SvIVX(sstr);
2887 if (sflags & SVf_IVisUV)
2891 else if (sflags & SVp_NOK) {
2892 SvNVX(dstr) = SvNVX(sstr);
2893 (void)SvNOK_only(dstr);
2894 if (sflags & SVf_IOK) {
2895 (void)SvIOK_on(dstr);
2896 SvIVX(dstr) = SvIVX(sstr);
2897 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2898 if (sflags & SVf_IVisUV)
2902 else if (sflags & SVp_IOK) {
2903 (void)SvIOK_only(dstr);
2904 SvIVX(dstr) = SvIVX(sstr);
2905 if (sflags & SVf_IVisUV)
2909 if (dtype == SVt_PVGV) {
2910 if (ckWARN(WARN_MISC))
2911 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2914 (void)SvOK_off(dstr);
2920 =for apidoc sv_setsv_mg
2922 Like C<sv_setsv>, but also handles 'set' magic.
2928 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2930 sv_setsv(dstr,sstr);
2935 =for apidoc sv_setpvn
2937 Copies a string into an SV. The C<len> parameter indicates the number of
2938 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2944 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2946 register char *dptr;
2947 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2948 elicit a warning, but it won't hurt. */
2949 SV_CHECK_THINKFIRST(sv);
2954 (void)SvUPGRADE(sv, SVt_PV);
2956 SvGROW(sv, len + 1);
2958 Move(ptr,dptr,len,char);
2961 (void)SvPOK_only(sv); /* validate pointer */
2966 =for apidoc sv_setpvn_mg
2968 Like C<sv_setpvn>, but also handles 'set' magic.
2974 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2976 sv_setpvn(sv,ptr,len);
2981 =for apidoc sv_setpv
2983 Copies a string into an SV. The string must be null-terminated. Does not
2984 handle 'set' magic. See C<sv_setpv_mg>.
2990 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
2992 register STRLEN len;
2994 SV_CHECK_THINKFIRST(sv);
3000 (void)SvUPGRADE(sv, SVt_PV);
3002 SvGROW(sv, len + 1);
3003 Move(ptr,SvPVX(sv),len+1,char);
3005 (void)SvPOK_only(sv); /* validate pointer */
3010 =for apidoc sv_setpv_mg
3012 Like C<sv_setpv>, but also handles 'set' magic.
3018 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3025 =for apidoc sv_usepvn
3027 Tells an SV to use C<ptr> to find its string value. Normally the string is
3028 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3029 The C<ptr> should point to memory that was allocated by C<malloc>. The
3030 string length, C<len>, must be supplied. This function will realloc the
3031 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3032 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3033 See C<sv_usepvn_mg>.
3039 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3041 SV_CHECK_THINKFIRST(sv);
3042 (void)SvUPGRADE(sv, SVt_PV);
3047 (void)SvOOK_off(sv);
3048 if (SvPVX(sv) && SvLEN(sv))
3049 Safefree(SvPVX(sv));
3050 Renew(ptr, len+1, char);
3053 SvLEN_set(sv, len+1);
3055 (void)SvPOK_only(sv); /* validate pointer */
3060 =for apidoc sv_usepvn_mg
3062 Like C<sv_usepvn>, but also handles 'set' magic.
3068 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3070 sv_usepvn(sv,ptr,len);
3075 Perl_sv_force_normal(pTHX_ register SV *sv)
3077 if (SvREADONLY(sv)) {
3080 char *pvx = SvPVX(sv);
3081 STRLEN len = SvCUR(sv);
3082 U32 hash = SvUVX(sv);
3083 SvGROW(sv, len + 1);
3084 Move(pvx,SvPVX(sv),len,char);
3088 unsharepvn(pvx,len,hash);
3090 else if (PL_curcop != &PL_compiling)
3091 Perl_croak(aTHX_ PL_no_modify);
3095 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3102 Efficient removal of characters from the beginning of the string buffer.
3103 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3104 the string buffer. The C<ptr> becomes the first character of the adjusted
3111 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3115 register STRLEN delta;
3117 if (!ptr || !SvPOKp(sv))
3119 SV_CHECK_THINKFIRST(sv);
3120 if (SvTYPE(sv) < SVt_PVIV)
3121 sv_upgrade(sv,SVt_PVIV);
3124 if (!SvLEN(sv)) { /* make copy of shared string */
3125 char *pvx = SvPVX(sv);
3126 STRLEN len = SvCUR(sv);
3127 SvGROW(sv, len + 1);
3128 Move(pvx,SvPVX(sv),len,char);
3132 SvFLAGS(sv) |= SVf_OOK;
3134 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3135 delta = ptr - SvPVX(sv);
3143 =for apidoc sv_catpvn
3145 Concatenates the string onto the end of the string which is in the SV. The
3146 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3147 'set' magic. See C<sv_catpvn_mg>.
3153 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3158 junk = SvPV_force(sv, tlen);
3159 SvGROW(sv, tlen + len + 1);
3162 Move(ptr,SvPVX(sv)+tlen,len,char);
3165 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3170 =for apidoc sv_catpvn_mg
3172 Like C<sv_catpvn>, but also handles 'set' magic.
3178 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3180 sv_catpvn(sv,ptr,len);
3185 =for apidoc sv_catsv
3187 Concatenates the string from SV C<ssv> onto the end of the string in SV
3188 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3194 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3200 if ((s = SvPV(sstr, len))) {
3201 if (DO_UTF8(sstr)) {
3202 sv_utf8_upgrade(dstr);
3203 sv_catpvn(dstr,s,len);
3207 sv_catpvn(dstr,s,len);
3212 =for apidoc sv_catsv_mg
3214 Like C<sv_catsv>, but also handles 'set' magic.
3220 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3222 sv_catsv(dstr,sstr);
3227 =for apidoc sv_catpv
3229 Concatenates the string onto the end of the string which is in the SV.
3230 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3236 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3238 register STRLEN len;
3244 junk = SvPV_force(sv, tlen);
3246 SvGROW(sv, tlen + len + 1);
3249 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3251 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3256 =for apidoc sv_catpv_mg
3258 Like C<sv_catpv>, but also handles 'set' magic.
3264 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3271 Perl_newSV(pTHX_ STRLEN len)
3277 sv_upgrade(sv, SVt_PV);
3278 SvGROW(sv, len + 1);
3283 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3286 =for apidoc sv_magic
3288 Adds magic to an SV.
3294 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3298 if (SvREADONLY(sv)) {
3300 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3301 Perl_croak(aTHX_ PL_no_modify);
3303 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3304 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3311 (void)SvUPGRADE(sv, SVt_PVMG);
3313 Newz(702,mg, 1, MAGIC);
3314 mg->mg_moremagic = SvMAGIC(sv);
3317 if (!obj || obj == sv || how == '#' || how == 'r')
3321 mg->mg_obj = SvREFCNT_inc(obj);
3322 mg->mg_flags |= MGf_REFCOUNTED;
3325 mg->mg_len = namlen;
3328 mg->mg_ptr = savepvn(name, namlen);
3329 else if (namlen == HEf_SVKEY)
3330 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3334 mg->mg_virtual = &PL_vtbl_sv;
3337 mg->mg_virtual = &PL_vtbl_amagic;
3340 mg->mg_virtual = &PL_vtbl_amagicelem;
3346 mg->mg_virtual = &PL_vtbl_bm;
3349 mg->mg_virtual = &PL_vtbl_regdata;
3352 mg->mg_virtual = &PL_vtbl_regdatum;
3355 mg->mg_virtual = &PL_vtbl_env;
3358 mg->mg_virtual = &PL_vtbl_fm;
3361 mg->mg_virtual = &PL_vtbl_envelem;
3364 mg->mg_virtual = &PL_vtbl_mglob;
3367 mg->mg_virtual = &PL_vtbl_isa;
3370 mg->mg_virtual = &PL_vtbl_isaelem;
3373 mg->mg_virtual = &PL_vtbl_nkeys;
3380 mg->mg_virtual = &PL_vtbl_dbline;
3384 mg->mg_virtual = &PL_vtbl_mutex;
3386 #endif /* USE_THREADS */
3387 #ifdef USE_LOCALE_COLLATE
3389 mg->mg_virtual = &PL_vtbl_collxfrm;
3391 #endif /* USE_LOCALE_COLLATE */
3393 mg->mg_virtual = &PL_vtbl_pack;
3397 mg->mg_virtual = &PL_vtbl_packelem;
3400 mg->mg_virtual = &PL_vtbl_regexp;
3403 mg->mg_virtual = &PL_vtbl_sig;
3406 mg->mg_virtual = &PL_vtbl_sigelem;
3409 mg->mg_virtual = &PL_vtbl_taint;
3413 mg->mg_virtual = &PL_vtbl_uvar;
3416 mg->mg_virtual = &PL_vtbl_vec;
3419 mg->mg_virtual = &PL_vtbl_substr;
3422 mg->mg_virtual = &PL_vtbl_defelem;
3425 mg->mg_virtual = &PL_vtbl_glob;
3428 mg->mg_virtual = &PL_vtbl_arylen;
3431 mg->mg_virtual = &PL_vtbl_pos;
3434 mg->mg_virtual = &PL_vtbl_backref;
3436 case '~': /* Reserved for use by extensions not perl internals. */
3437 /* Useful for attaching extension internal data to perl vars. */
3438 /* Note that multiple extensions may clash if magical scalars */
3439 /* etc holding private data from one are passed to another. */
3443 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3447 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3451 =for apidoc sv_unmagic
3453 Removes magic from an SV.
3459 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3463 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3466 for (mg = *mgp; mg; mg = *mgp) {
3467 if (mg->mg_type == type) {
3468 MGVTBL* vtbl = mg->mg_virtual;
3469 *mgp = mg->mg_moremagic;
3470 if (vtbl && vtbl->svt_free)
3471 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3472 if (mg->mg_ptr && mg->mg_type != 'g')
3473 if (mg->mg_len >= 0)
3474 Safefree(mg->mg_ptr);
3475 else if (mg->mg_len == HEf_SVKEY)
3476 SvREFCNT_dec((SV*)mg->mg_ptr);
3477 if (mg->mg_flags & MGf_REFCOUNTED)
3478 SvREFCNT_dec(mg->mg_obj);
3482 mgp = &mg->mg_moremagic;
3486 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3493 =for apidoc sv_rvweaken
3501 Perl_sv_rvweaken(pTHX_ SV *sv)
3504 if (!SvOK(sv)) /* let undefs pass */
3507 Perl_croak(aTHX_ "Can't weaken a nonreference");
3508 else if (SvWEAKREF(sv)) {
3510 if (ckWARN(WARN_MISC))
3511 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3515 sv_add_backref(tsv, sv);
3522 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3526 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3527 av = (AV*)mg->mg_obj;
3530 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3531 SvREFCNT_dec(av); /* for sv_magic */
3537 S_sv_del_backref(pTHX_ SV *sv)
3544 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3545 Perl_croak(aTHX_ "panic: del_backref");
3546 av = (AV *)mg->mg_obj;
3551 svp[i] = &PL_sv_undef; /* XXX */
3558 =for apidoc sv_insert
3560 Inserts a string at the specified offset/length within the SV. Similar to
3561 the Perl substr() function.
3567 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3571 register char *midend;
3572 register char *bigend;
3578 Perl_croak(aTHX_ "Can't modify non-existent substring");
3579 SvPV_force(bigstr, curlen);
3580 (void)SvPOK_only_UTF8(bigstr);
3581 if (offset + len > curlen) {
3582 SvGROW(bigstr, offset+len+1);
3583 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3584 SvCUR_set(bigstr, offset+len);
3588 i = littlelen - len;
3589 if (i > 0) { /* string might grow */
3590 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3591 mid = big + offset + len;
3592 midend = bigend = big + SvCUR(bigstr);
3595 while (midend > mid) /* shove everything down */
3596 *--bigend = *--midend;
3597 Move(little,big+offset,littlelen,char);
3603 Move(little,SvPVX(bigstr)+offset,len,char);
3608 big = SvPVX(bigstr);
3611 bigend = big + SvCUR(bigstr);
3613 if (midend > bigend)
3614 Perl_croak(aTHX_ "panic: sv_insert");
3616 if (mid - big > bigend - midend) { /* faster to shorten from end */
3618 Move(little, mid, littlelen,char);
3621 i = bigend - midend;
3623 Move(midend, mid, i,char);
3627 SvCUR_set(bigstr, mid - big);
3630 else if ((i = mid - big)) { /* faster from front */
3631 midend -= littlelen;
3633 sv_chop(bigstr,midend-i);
3638 Move(little, mid, littlelen,char);
3640 else if (littlelen) {
3641 midend -= littlelen;
3642 sv_chop(bigstr,midend);
3643 Move(little,midend,littlelen,char);
3646 sv_chop(bigstr,midend);
3652 =for apidoc sv_replace
3654 Make the first argument a copy of the second, then delete the original.
3660 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3663 U32 refcnt = SvREFCNT(sv);
3664 SV_CHECK_THINKFIRST(sv);
3665 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3666 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3667 if (SvMAGICAL(sv)) {
3671 sv_upgrade(nsv, SVt_PVMG);
3672 SvMAGIC(nsv) = SvMAGIC(sv);
3673 SvFLAGS(nsv) |= SvMAGICAL(sv);
3679 assert(!SvREFCNT(sv));
3680 StructCopy(nsv,sv,SV);
3681 SvREFCNT(sv) = refcnt;
3682 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3687 =for apidoc sv_clear
3689 Clear an SV, making it empty. Does not free the memory used by the SV
3696 Perl_sv_clear(pTHX_ register SV *sv)
3700 assert(SvREFCNT(sv) == 0);
3704 if (PL_defstash) { /* Still have a symbol table? */
3709 Zero(&tmpref, 1, SV);
3710 sv_upgrade(&tmpref, SVt_RV);
3712 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3713 SvREFCNT(&tmpref) = 1;
3716 stash = SvSTASH(sv);
3717 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3720 PUSHSTACKi(PERLSI_DESTROY);
3721 SvRV(&tmpref) = SvREFCNT_inc(sv);
3726 call_sv((SV*)GvCV(destructor),
3727 G_DISCARD|G_EVAL|G_KEEPERR);
3733 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3735 del_XRV(SvANY(&tmpref));
3738 if (PL_in_clean_objs)
3739 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3741 /* DESTROY gave object new lease on life */
3747 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3748 SvOBJECT_off(sv); /* Curse the object. */
3749 if (SvTYPE(sv) != SVt_PVIO)
3750 --PL_sv_objcount; /* XXX Might want something more general */
3753 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3756 switch (SvTYPE(sv)) {
3759 IoIFP(sv) != PerlIO_stdin() &&
3760 IoIFP(sv) != PerlIO_stdout() &&
3761 IoIFP(sv) != PerlIO_stderr())
3763 io_close((IO*)sv, FALSE);
3765 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3766 PerlDir_close(IoDIRP(sv));
3767 IoDIRP(sv) = (DIR*)NULL;
3768 Safefree(IoTOP_NAME(sv));
3769 Safefree(IoFMT_NAME(sv));
3770 Safefree(IoBOTTOM_NAME(sv));
3785 SvREFCNT_dec(LvTARG(sv));
3789 Safefree(GvNAME(sv));
3790 /* cannot decrease stash refcount yet, as we might recursively delete
3791 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3792 of stash until current sv is completely gone.
3793 -- JohnPC, 27 Mar 1998 */
3794 stash = GvSTASH(sv);
3800 (void)SvOOK_off(sv);
3808 SvREFCNT_dec(SvRV(sv));
3810 else if (SvPVX(sv) && SvLEN(sv))
3811 Safefree(SvPVX(sv));
3812 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3813 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3825 switch (SvTYPE(sv)) {
3841 del_XPVIV(SvANY(sv));
3844 del_XPVNV(SvANY(sv));
3847 del_XPVMG(SvANY(sv));
3850 del_XPVLV(SvANY(sv));
3853 del_XPVAV(SvANY(sv));
3856 del_XPVHV(SvANY(sv));
3859 del_XPVCV(SvANY(sv));
3862 del_XPVGV(SvANY(sv));
3863 /* code duplication for increased performance. */
3864 SvFLAGS(sv) &= SVf_BREAK;
3865 SvFLAGS(sv) |= SVTYPEMASK;
3866 /* decrease refcount of the stash that owns this GV, if any */
3868 SvREFCNT_dec(stash);
3869 return; /* not break, SvFLAGS reset already happened */
3871 del_XPVBM(SvANY(sv));
3874 del_XPVFM(SvANY(sv));
3877 del_XPVIO(SvANY(sv));
3880 SvFLAGS(sv) &= SVf_BREAK;
3881 SvFLAGS(sv) |= SVTYPEMASK;
3885 Perl_sv_newref(pTHX_ SV *sv)
3888 ATOMIC_INC(SvREFCNT(sv));
3895 Free the memory used by an SV.
3901 Perl_sv_free(pTHX_ SV *sv)
3904 int refcount_is_zero;
3908 if (SvREFCNT(sv) == 0) {
3909 if (SvFLAGS(sv) & SVf_BREAK)
3911 if (PL_in_clean_all) /* All is fair */
3913 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3914 /* make sure SvREFCNT(sv)==0 happens very seldom */
3915 SvREFCNT(sv) = (~(U32)0)/2;
3918 if (ckWARN_d(WARN_INTERNAL))
3919 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3922 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3923 if (!refcount_is_zero)
3927 if (ckWARN_d(WARN_DEBUGGING))
3928 Perl_warner(aTHX_ WARN_DEBUGGING,
3929 "Attempt to free temp prematurely: SV 0x%"UVxf,
3934 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3935 /* make sure SvREFCNT(sv)==0 happens very seldom */
3936 SvREFCNT(sv) = (~(U32)0)/2;
3947 Returns the length of the string in the SV. See also C<SvCUR>.
3953 Perl_sv_len(pTHX_ register SV *sv)
3962 len = mg_length(sv);
3964 junk = SvPV(sv, len);
3969 =for apidoc sv_len_utf8
3971 Returns the number of characters in the string in an SV, counting wide
3972 UTF8 bytes as a single character.
3978 Perl_sv_len_utf8(pTHX_ register SV *sv)
3989 len = mg_length(sv);
3992 s = (U8*)SvPV(sv, len);
4003 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4008 I32 uoffset = *offsetp;
4014 start = s = (U8*)SvPV(sv, len);
4016 while (s < send && uoffset--)
4020 *offsetp = s - start;
4024 while (s < send && ulen--)
4034 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4043 s = (U8*)SvPV(sv, len);
4045 Perl_croak(aTHX_ "panic: bad byte offset");
4046 send = s + *offsetp;
4054 if (ckWARN_d(WARN_UTF8))
4055 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4065 Returns a boolean indicating whether the strings in the two SVs are
4072 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4079 bool pv1tmp = FALSE;
4080 bool pv2tmp = FALSE;
4087 pv1 = SvPV(sv1, cur1);
4094 pv2 = SvPV(sv2, cur2);
4096 /* do not utf8ize the comparands as a side-effect */
4097 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE && 0) {
4099 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4103 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4109 eq = memEQ(pv1, pv2, cur1);
4122 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4123 string in C<sv1> is less than, equal to, or greater than the string in
4130 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4135 bool pv1tmp = FALSE;
4136 bool pv2tmp = FALSE;
4143 pv1 = SvPV(sv1, cur1);
4150 pv2 = SvPV(sv2, cur2);
4152 /* do not utf8ize the comparands as a side-effect */
4153 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4155 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4159 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4165 cmp = cur2 ? -1 : 0;
4169 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4172 cmp = retval < 0 ? -1 : 1;
4173 } else if (cur1 == cur2) {
4176 cmp = cur1 < cur2 ? -1 : 1;
4189 =for apidoc sv_cmp_locale
4191 Compares the strings in two SVs in a locale-aware manner. See
4198 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4200 #ifdef USE_LOCALE_COLLATE
4206 if (PL_collation_standard)
4210 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4212 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4214 if (!pv1 || !len1) {
4225 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4228 return retval < 0 ? -1 : 1;
4231 * When the result of collation is equality, that doesn't mean
4232 * that there are no differences -- some locales exclude some
4233 * characters from consideration. So to avoid false equalities,
4234 * we use the raw string as a tiebreaker.
4240 #endif /* USE_LOCALE_COLLATE */
4242 return sv_cmp(sv1, sv2);
4245 #ifdef USE_LOCALE_COLLATE
4247 * Any scalar variable may carry an 'o' magic that contains the
4248 * scalar data of the variable transformed to such a format that
4249 * a normal memory comparison can be used to compare the data
4250 * according to the locale settings.
4253 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4257 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4258 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4263 Safefree(mg->mg_ptr);
4265 if ((xf = mem_collxfrm(s, len, &xlen))) {
4266 if (SvREADONLY(sv)) {
4269 return xf + sizeof(PL_collation_ix);
4272 sv_magic(sv, 0, 'o', 0, 0);
4273 mg = mg_find(sv, 'o');
4286 if (mg && mg->mg_ptr) {
4288 return mg->mg_ptr + sizeof(PL_collation_ix);
4296 #endif /* USE_LOCALE_COLLATE */
4301 Get a line from the filehandle and store it into the SV, optionally
4302 appending to the currently-stored string.
4308 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4313 register STDCHAR rslast;
4314 register STDCHAR *bp;
4318 SV_CHECK_THINKFIRST(sv);
4319 (void)SvUPGRADE(sv, SVt_PV);
4323 if (RsSNARF(PL_rs)) {
4327 else if (RsRECORD(PL_rs)) {
4328 I32 recsize, bytesread;
4331 /* Grab the size of the record we're getting */
4332 recsize = SvIV(SvRV(PL_rs));
4333 (void)SvPOK_only(sv); /* Validate pointer */
4334 buffer = SvGROW(sv, recsize + 1);
4337 /* VMS wants read instead of fread, because fread doesn't respect */
4338 /* RMS record boundaries. This is not necessarily a good thing to be */
4339 /* doing, but we've got no other real choice */
4340 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4342 bytesread = PerlIO_read(fp, buffer, recsize);
4344 SvCUR_set(sv, bytesread);
4345 buffer[bytesread] = '\0';
4346 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4348 else if (RsPARA(PL_rs)) {
4353 rsptr = SvPV(PL_rs, rslen);
4354 rslast = rslen ? rsptr[rslen - 1] : '\0';
4356 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4357 do { /* to make sure file boundaries work right */
4360 i = PerlIO_getc(fp);
4364 PerlIO_ungetc(fp,i);
4370 /* See if we know enough about I/O mechanism to cheat it ! */
4372 /* This used to be #ifdef test - it is made run-time test for ease
4373 of abstracting out stdio interface. One call should be cheap
4374 enough here - and may even be a macro allowing compile
4378 if (PerlIO_fast_gets(fp)) {
4381 * We're going to steal some values from the stdio struct
4382 * and put EVERYTHING in the innermost loop into registers.
4384 register STDCHAR *ptr;
4388 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4389 /* An ungetc()d char is handled separately from the regular
4390 * buffer, so we getc() it back out and stuff it in the buffer.
4392 i = PerlIO_getc(fp);
4393 if (i == EOF) return 0;
4394 *(--((*fp)->_ptr)) = (unsigned char) i;
4398 /* Here is some breathtakingly efficient cheating */
4400 cnt = PerlIO_get_cnt(fp); /* get count into register */
4401 (void)SvPOK_only(sv); /* validate pointer */
4402 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4403 if (cnt > 80 && SvLEN(sv) > append) {
4404 shortbuffered = cnt - SvLEN(sv) + append + 1;
4405 cnt -= shortbuffered;
4409 /* remember that cnt can be negative */
4410 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4415 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4416 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4417 DEBUG_P(PerlIO_printf(Perl_debug_log,
4418 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4419 DEBUG_P(PerlIO_printf(Perl_debug_log,
4420 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4421 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4422 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4427 while (cnt > 0) { /* this | eat */
4429 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4430 goto thats_all_folks; /* screams | sed :-) */
4434 Copy(ptr, bp, cnt, char); /* this | eat */
4435 bp += cnt; /* screams | dust */
4436 ptr += cnt; /* louder | sed :-) */
4441 if (shortbuffered) { /* oh well, must extend */
4442 cnt = shortbuffered;
4444 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4446 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4447 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4451 DEBUG_P(PerlIO_printf(Perl_debug_log,
4452 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4453 PTR2UV(ptr),(long)cnt));
4454 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4455 DEBUG_P(PerlIO_printf(Perl_debug_log,
4456 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4457 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4458 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4459 /* This used to call 'filbuf' in stdio form, but as that behaves like
4460 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4461 another abstraction. */
4462 i = PerlIO_getc(fp); /* get more characters */
4463 DEBUG_P(PerlIO_printf(Perl_debug_log,
4464 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4465 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4466 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4467 cnt = PerlIO_get_cnt(fp);
4468 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4469 DEBUG_P(PerlIO_printf(Perl_debug_log,
4470 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4472 if (i == EOF) /* all done for ever? */
4473 goto thats_really_all_folks;
4475 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4477 SvGROW(sv, bpx + cnt + 2);
4478 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4480 *bp++ = i; /* store character from PerlIO_getc */
4482 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4483 goto thats_all_folks;
4487 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4488 memNE((char*)bp - rslen, rsptr, rslen))
4489 goto screamer; /* go back to the fray */
4490 thats_really_all_folks:
4492 cnt += shortbuffered;
4493 DEBUG_P(PerlIO_printf(Perl_debug_log,
4494 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4495 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4496 DEBUG_P(PerlIO_printf(Perl_debug_log,
4497 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4498 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4499 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4501 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4502 DEBUG_P(PerlIO_printf(Perl_debug_log,
4503 "Screamer: done, len=%ld, string=|%.*s|\n",
4504 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4509 /*The big, slow, and stupid way */
4512 /* Need to work around EPOC SDK features */
4513 /* On WINS: MS VC5 generates calls to _chkstk, */
4514 /* if a `large' stack frame is allocated */
4515 /* gcc on MARM does not generate calls like these */
4521 register STDCHAR *bpe = buf + sizeof(buf);
4523 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4524 ; /* keep reading */
4528 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4529 /* Accomodate broken VAXC compiler, which applies U8 cast to
4530 * both args of ?: operator, causing EOF to change into 255
4532 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4536 sv_catpvn(sv, (char *) buf, cnt);
4538 sv_setpvn(sv, (char *) buf, cnt);
4540 if (i != EOF && /* joy */
4542 SvCUR(sv) < rslen ||
4543 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4547 * If we're reading from a TTY and we get a short read,
4548 * indicating that the user hit his EOF character, we need
4549 * to notice it now, because if we try to read from the TTY
4550 * again, the EOF condition will disappear.
4552 * The comparison of cnt to sizeof(buf) is an optimization
4553 * that prevents unnecessary calls to feof().
4557 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4562 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4563 while (i != EOF) { /* to make sure file boundaries work right */
4564 i = PerlIO_getc(fp);
4566 PerlIO_ungetc(fp,i);
4572 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4579 Auto-increment of the value in the SV.
4585 Perl_sv_inc(pTHX_ register SV *sv)
4594 if (SvTHINKFIRST(sv)) {
4595 if (SvREADONLY(sv)) {
4597 if (PL_curcop != &PL_compiling)
4598 Perl_croak(aTHX_ PL_no_modify);
4602 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4604 i = PTR2IV(SvRV(sv));
4609 flags = SvFLAGS(sv);
4610 if (flags & SVp_NOK) {
4611 (void)SvNOK_only(sv);
4615 if (flags & SVp_IOK) {
4617 if (SvUVX(sv) == UV_MAX)
4618 sv_setnv(sv, (NV)UV_MAX + 1.0);
4620 (void)SvIOK_only_UV(sv);
4623 if (SvIVX(sv) == IV_MAX)
4624 sv_setnv(sv, (NV)IV_MAX + 1.0);
4626 (void)SvIOK_only(sv);
4632 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4633 if ((flags & SVTYPEMASK) < SVt_PVNV)
4634 sv_upgrade(sv, SVt_NV);
4636 (void)SvNOK_only(sv);
4640 while (isALPHA(*d)) d++;
4641 while (isDIGIT(*d)) d++;
4643 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4647 while (d >= SvPVX(sv)) {
4655 /* MKS: The original code here died if letters weren't consecutive.
4656 * at least it didn't have to worry about non-C locales. The
4657 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4658 * arranged in order (although not consecutively) and that only
4659 * [A-Za-z] are accepted by isALPHA in the C locale.
4661 if (*d != 'z' && *d != 'Z') {
4662 do { ++*d; } while (!isALPHA(*d));
4665 *(d--) -= 'z' - 'a';
4670 *(d--) -= 'z' - 'a' + 1;
4674 /* oh,oh, the number grew */
4675 SvGROW(sv, SvCUR(sv) + 2);
4677 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4688 Auto-decrement of the value in the SV.
4694 Perl_sv_dec(pTHX_ register SV *sv)
4702 if (SvTHINKFIRST(sv)) {
4703 if (SvREADONLY(sv)) {
4705 if (PL_curcop != &PL_compiling)
4706 Perl_croak(aTHX_ PL_no_modify);
4710 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4712 i = PTR2IV(SvRV(sv));
4717 flags = SvFLAGS(sv);
4718 if (flags & SVp_NOK) {
4720 (void)SvNOK_only(sv);
4723 if (flags & SVp_IOK) {
4725 if (SvUVX(sv) == 0) {
4726 (void)SvIOK_only(sv);
4730 (void)SvIOK_only_UV(sv);
4734 if (SvIVX(sv) == IV_MIN)
4735 sv_setnv(sv, (NV)IV_MIN - 1.0);
4737 (void)SvIOK_only(sv);
4743 if (!(flags & SVp_POK)) {
4744 if ((flags & SVTYPEMASK) < SVt_PVNV)
4745 sv_upgrade(sv, SVt_NV);
4747 (void)SvNOK_only(sv);
4750 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4754 =for apidoc sv_mortalcopy
4756 Creates a new SV which is a copy of the original SV. The new SV is marked
4762 /* Make a string that will exist for the duration of the expression
4763 * evaluation. Actually, it may have to last longer than that, but
4764 * hopefully we won't free it until it has been assigned to a
4765 * permanent location. */
4768 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4774 sv_setsv(sv,oldstr);
4776 PL_tmps_stack[++PL_tmps_ix] = sv;
4782 =for apidoc sv_newmortal
4784 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4790 Perl_sv_newmortal(pTHX)
4796 SvFLAGS(sv) = SVs_TEMP;
4798 PL_tmps_stack[++PL_tmps_ix] = sv;
4803 =for apidoc sv_2mortal
4805 Marks an SV as mortal. The SV will be destroyed when the current context
4811 /* same thing without the copying */
4814 Perl_sv_2mortal(pTHX_ register SV *sv)
4819 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4822 PL_tmps_stack[++PL_tmps_ix] = sv;
4830 Creates a new SV and copies a string into it. The reference count for the
4831 SV is set to 1. If C<len> is zero, Perl will compute the length using
4832 strlen(). For efficiency, consider using C<newSVpvn> instead.
4838 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4845 sv_setpvn(sv,s,len);
4850 =for apidoc newSVpvn
4852 Creates a new SV and copies a string into it. The reference count for the
4853 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4854 string. You are responsible for ensuring that the source string is at least
4861 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4866 sv_setpvn(sv,s,len);
4871 =for apidoc newSVpvn_share
4873 Creates a new SV and populates it with a string from
4874 the string table. Turns on READONLY and FAKE.
4875 The idea here is that as string table is used for shared hash
4876 keys these strings will have SvPVX == HeKEY and hash lookup
4877 will avoid string compare.
4883 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4887 PERL_HASH(hash, src, len);
4889 sv_upgrade(sv, SVt_PVIV);
4890 SvPVX(sv) = sharepvn(src, len, hash);
4900 #if defined(PERL_IMPLICIT_CONTEXT)
4902 Perl_newSVpvf_nocontext(const char* pat, ...)
4907 va_start(args, pat);
4908 sv = vnewSVpvf(pat, &args);
4915 =for apidoc newSVpvf
4917 Creates a new SV an initialize it with the string formatted like
4924 Perl_newSVpvf(pTHX_ const char* pat, ...)
4928 va_start(args, pat);
4929 sv = vnewSVpvf(pat, &args);
4935 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4939 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4946 Creates a new SV and copies a floating point value into it.
4947 The reference count for the SV is set to 1.
4953 Perl_newSVnv(pTHX_ NV n)
4965 Creates a new SV and copies an integer into it. The reference count for the
4972 Perl_newSViv(pTHX_ IV i)
4984 Creates a new SV and copies an unsigned integer into it.
4985 The reference count for the SV is set to 1.
4991 Perl_newSVuv(pTHX_ UV u)
5001 =for apidoc newRV_noinc
5003 Creates an RV wrapper for an SV. The reference count for the original
5004 SV is B<not> incremented.
5010 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5016 sv_upgrade(sv, SVt_RV);
5023 /* newRV_inc is #defined to newRV in sv.h */
5025 Perl_newRV(pTHX_ SV *tmpRef)
5027 return newRV_noinc(SvREFCNT_inc(tmpRef));
5033 Creates a new SV which is an exact duplicate of the original SV.
5038 /* make an exact duplicate of old */
5041 Perl_newSVsv(pTHX_ register SV *old)
5048 if (SvTYPE(old) == SVTYPEMASK) {
5049 if (ckWARN_d(WARN_INTERNAL))
5050 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5065 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5073 char todo[PERL_UCHAR_MAX+1];
5078 if (!*s) { /* reset ?? searches */
5079 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5080 pm->op_pmdynflags &= ~PMdf_USED;
5085 /* reset variables */
5087 if (!HvARRAY(stash))
5090 Zero(todo, 256, char);
5092 i = (unsigned char)*s;
5096 max = (unsigned char)*s++;
5097 for ( ; i <= max; i++) {
5100 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5101 for (entry = HvARRAY(stash)[i];
5103 entry = HeNEXT(entry))
5105 if (!todo[(U8)*HeKEY(entry)])
5107 gv = (GV*)HeVAL(entry);
5109 if (SvTHINKFIRST(sv)) {
5110 if (!SvREADONLY(sv) && SvROK(sv))
5115 if (SvTYPE(sv) >= SVt_PV) {
5117 if (SvPVX(sv) != Nullch)
5124 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5126 #if !defined( VMS) && !defined(EPOC) /* VMS has no environ array */
5128 environ[0] = Nullch;
5137 Perl_sv_2io(pTHX_ SV *sv)
5143 switch (SvTYPE(sv)) {
5151 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5155 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5157 return sv_2io(SvRV(sv));
5158 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5164 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5171 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5178 return *gvp = Nullgv, Nullcv;
5179 switch (SvTYPE(sv)) {
5199 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5200 tryAMAGICunDEREF(to_cv);
5203 if (SvTYPE(sv) == SVt_PVCV) {
5212 Perl_croak(aTHX_ "Not a subroutine reference");
5217 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5223 if (lref && !GvCVu(gv)) {
5226 tmpsv = NEWSV(704,0);
5227 gv_efullname3(tmpsv, gv, Nullch);
5228 /* XXX this is probably not what they think they're getting.
5229 * It has the same effect as "sub name;", i.e. just a forward
5231 newSUB(start_subparse(FALSE, 0),
5232 newSVOP(OP_CONST, 0, tmpsv),
5237 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5246 Returns true if the SV has a true value by Perl's rules.
5252 Perl_sv_true(pTHX_ register SV *sv)
5259 if ((tXpv = (XPV*)SvANY(sv)) &&
5260 (tXpv->xpv_cur > 1 ||
5261 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5268 return SvIVX(sv) != 0;
5271 return SvNVX(sv) != 0.0;
5273 return sv_2bool(sv);
5279 Perl_sv_iv(pTHX_ register SV *sv)
5283 return (IV)SvUVX(sv);
5290 Perl_sv_uv(pTHX_ register SV *sv)
5295 return (UV)SvIVX(sv);
5301 Perl_sv_nv(pTHX_ register SV *sv)
5309 Perl_sv_pv(pTHX_ SV *sv)
5316 return sv_2pv(sv, &n_a);
5320 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5326 return sv_2pv(sv, lp);
5330 =for apidoc sv_pvn_force
5332 Get a sensible string out of the SV somehow.
5338 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5342 if (SvTHINKFIRST(sv) && !SvROK(sv))
5343 sv_force_normal(sv);
5349 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5351 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5352 PL_op_name[PL_op->op_type]);
5356 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5361 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5362 SvGROW(sv, len + 1);
5363 Move(s,SvPVX(sv),len,char);
5368 SvPOK_on(sv); /* validate pointer */
5370 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5371 PTR2UV(sv),SvPVX(sv)));
5378 Perl_sv_pvbyte(pTHX_ SV *sv)
5384 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5386 return sv_pvn(sv,lp);
5390 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5392 return sv_pvn_force(sv,lp);
5396 Perl_sv_pvutf8(pTHX_ SV *sv)
5398 sv_utf8_upgrade(sv);
5403 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5405 sv_utf8_upgrade(sv);
5406 return sv_pvn(sv,lp);
5410 =for apidoc sv_pvutf8n_force
5412 Get a sensible UTF8-encoded string out of the SV somehow. See
5419 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5421 sv_utf8_upgrade(sv);
5422 return sv_pvn_force(sv,lp);
5426 =for apidoc sv_reftype
5428 Returns a string describing what the SV is a reference to.
5434 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5436 if (ob && SvOBJECT(sv))
5437 return HvNAME(SvSTASH(sv));
5439 switch (SvTYPE(sv)) {
5453 case SVt_PVLV: return "LVALUE";
5454 case SVt_PVAV: return "ARRAY";
5455 case SVt_PVHV: return "HASH";
5456 case SVt_PVCV: return "CODE";
5457 case SVt_PVGV: return "GLOB";
5458 case SVt_PVFM: return "FORMAT";
5459 case SVt_PVIO: return "IO";
5460 default: return "UNKNOWN";
5466 =for apidoc sv_isobject
5468 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5469 object. If the SV is not an RV, or if the object is not blessed, then this
5476 Perl_sv_isobject(pTHX_ SV *sv)
5493 Returns a boolean indicating whether the SV is blessed into the specified
5494 class. This does not check for subtypes; use C<sv_derived_from> to verify
5495 an inheritance relationship.
5501 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5513 return strEQ(HvNAME(SvSTASH(sv)), name);
5519 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5520 it will be upgraded to one. If C<classname> is non-null then the new SV will
5521 be blessed in the specified package. The new SV is returned and its
5522 reference count is 1.
5528 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5535 SV_CHECK_THINKFIRST(rv);
5538 if (SvTYPE(rv) >= SVt_PVMG) {
5539 U32 refcnt = SvREFCNT(rv);
5543 SvREFCNT(rv) = refcnt;
5546 if (SvTYPE(rv) < SVt_RV)
5547 sv_upgrade(rv, SVt_RV);
5548 else if (SvTYPE(rv) > SVt_RV) {
5549 (void)SvOOK_off(rv);
5550 if (SvPVX(rv) && SvLEN(rv))
5551 Safefree(SvPVX(rv));
5561 HV* stash = gv_stashpv(classname, TRUE);
5562 (void)sv_bless(rv, stash);
5568 =for apidoc sv_setref_pv
5570 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5571 argument will be upgraded to an RV. That RV will be modified to point to
5572 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5573 into the SV. The C<classname> argument indicates the package for the
5574 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5575 will be returned and will have a reference count of 1.
5577 Do not use with other Perl types such as HV, AV, SV, CV, because those
5578 objects will become corrupted by the pointer copy process.
5580 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5586 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5589 sv_setsv(rv, &PL_sv_undef);
5593 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5598 =for apidoc sv_setref_iv
5600 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5601 argument will be upgraded to an RV. That RV will be modified to point to
5602 the new SV. The C<classname> argument indicates the package for the
5603 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5604 will be returned and will have a reference count of 1.
5610 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5612 sv_setiv(newSVrv(rv,classname), iv);
5617 =for apidoc sv_setref_nv
5619 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5620 argument will be upgraded to an RV. That RV will be modified to point to
5621 the new SV. The C<classname> argument indicates the package for the
5622 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5623 will be returned and will have a reference count of 1.
5629 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5631 sv_setnv(newSVrv(rv,classname), nv);
5636 =for apidoc sv_setref_pvn
5638 Copies a string into a new SV, optionally blessing the SV. The length of the
5639 string must be specified with C<n>. The C<rv> argument will be upgraded to
5640 an RV. That RV will be modified to point to the new SV. The C<classname>
5641 argument indicates the package for the blessing. Set C<classname> to
5642 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5643 a reference count of 1.
5645 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5651 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5653 sv_setpvn(newSVrv(rv,classname), pv, n);
5658 =for apidoc sv_bless
5660 Blesses an SV into a specified package. The SV must be an RV. The package
5661 must be designated by its stash (see C<gv_stashpv()>). The reference count
5662 of the SV is unaffected.
5668 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5673 Perl_croak(aTHX_ "Can't bless non-reference value");
5675 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5676 if (SvREADONLY(tmpRef))
5677 Perl_croak(aTHX_ PL_no_modify);
5678 if (SvOBJECT(tmpRef)) {
5679 if (SvTYPE(tmpRef) != SVt_PVIO)
5681 SvREFCNT_dec(SvSTASH(tmpRef));
5684 SvOBJECT_on(tmpRef);
5685 if (SvTYPE(tmpRef) != SVt_PVIO)
5687 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5688 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5699 S_sv_unglob(pTHX_ SV *sv)
5703 assert(SvTYPE(sv) == SVt_PVGV);
5708 SvREFCNT_dec(GvSTASH(sv));
5709 GvSTASH(sv) = Nullhv;
5711 sv_unmagic(sv, '*');
5712 Safefree(GvNAME(sv));
5715 /* need to keep SvANY(sv) in the right arena */
5716 xpvmg = new_XPVMG();
5717 StructCopy(SvANY(sv), xpvmg, XPVMG);
5718 del_XPVGV(SvANY(sv));
5721 SvFLAGS(sv) &= ~SVTYPEMASK;
5722 SvFLAGS(sv) |= SVt_PVMG;
5726 =for apidoc sv_unref
5728 Unsets the RV status of the SV, and decrements the reference count of
5729 whatever was being referenced by the RV. This can almost be thought of
5730 as a reversal of C<newSVrv>. See C<SvROK_off>.
5736 Perl_sv_unref(pTHX_ SV *sv)
5740 if (SvWEAKREF(sv)) {
5748 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5751 sv_2mortal(rv); /* Schedule for freeing later */
5755 Perl_sv_taint(pTHX_ SV *sv)
5757 sv_magic((sv), Nullsv, 't', Nullch, 0);
5761 Perl_sv_untaint(pTHX_ SV *sv)
5763 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5764 MAGIC *mg = mg_find(sv, 't');
5771 Perl_sv_tainted(pTHX_ SV *sv)
5773 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5774 MAGIC *mg = mg_find(sv, 't');
5775 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5782 =for apidoc sv_setpviv
5784 Copies an integer into the given SV, also updating its string value.
5785 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5791 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5793 char buf[TYPE_CHARS(UV)];
5795 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5797 sv_setpvn(sv, ptr, ebuf - ptr);
5802 =for apidoc sv_setpviv_mg
5804 Like C<sv_setpviv>, but also handles 'set' magic.
5810 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5812 char buf[TYPE_CHARS(UV)];
5814 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5816 sv_setpvn(sv, ptr, ebuf - ptr);
5820 #if defined(PERL_IMPLICIT_CONTEXT)
5822 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5826 va_start(args, pat);
5827 sv_vsetpvf(sv, pat, &args);
5833 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5837 va_start(args, pat);
5838 sv_vsetpvf_mg(sv, pat, &args);
5844 =for apidoc sv_setpvf
5846 Processes its arguments like C<sprintf> and sets an SV to the formatted
5847 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5853 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5856 va_start(args, pat);
5857 sv_vsetpvf(sv, pat, &args);
5862 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5864 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5868 =for apidoc sv_setpvf_mg
5870 Like C<sv_setpvf>, but also handles 'set' magic.
5876 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5879 va_start(args, pat);
5880 sv_vsetpvf_mg(sv, pat, &args);
5885 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5887 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5891 #if defined(PERL_IMPLICIT_CONTEXT)
5893 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5897 va_start(args, pat);
5898 sv_vcatpvf(sv, pat, &args);
5903 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5907 va_start(args, pat);
5908 sv_vcatpvf_mg(sv, pat, &args);
5914 =for apidoc sv_catpvf
5916 Processes its arguments like C<sprintf> and appends the formatted output
5917 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5918 typically be called after calling this function to handle 'set' magic.
5924 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5927 va_start(args, pat);
5928 sv_vcatpvf(sv, pat, &args);
5933 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5935 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5939 =for apidoc sv_catpvf_mg
5941 Like C<sv_catpvf>, but also handles 'set' magic.
5947 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5950 va_start(args, pat);
5951 sv_vcatpvf_mg(sv, pat, &args);
5956 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5958 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5963 =for apidoc sv_vsetpvfn
5965 Works like C<vcatpvfn> but copies the text into the SV instead of
5972 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5974 sv_setpvn(sv, "", 0);
5975 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5979 =for apidoc sv_vcatpvfn
5981 Processes its arguments like C<vsprintf> and appends the formatted output
5982 to an SV. Uses an array of SVs if the C style variable argument list is
5983 missing (NULL). When running with taint checks enabled, indicates via
5984 C<maybe_tainted> if results are untrustworthy (often due to the use of
5991 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5999 static char nullstr[] = "(null)";
6002 /* no matter what, this is a string now */
6003 (void)SvPV_force(sv, origlen);
6005 /* special-case "", "%s", and "%_" */
6008 if (patlen == 2 && pat[0] == '%') {
6012 char *s = va_arg(*args, char*);
6013 sv_catpv(sv, s ? s : nullstr);
6015 else if (svix < svmax) {
6016 sv_catsv(sv, *svargs);
6017 if (DO_UTF8(*svargs))
6023 argsv = va_arg(*args, SV*);
6024 sv_catsv(sv, argsv);
6029 /* See comment on '_' below */
6034 patend = (char*)pat + patlen;
6035 for (p = (char*)pat; p < patend; p = q) {
6038 bool vectorize = FALSE;
6045 bool has_precis = FALSE;
6047 bool is_utf = FALSE;
6050 U8 utf8buf[UTF8_MAXLEN];
6051 STRLEN esignlen = 0;
6053 char *eptr = Nullch;
6055 /* Times 4: a decimal digit takes more than 3 binary digits.
6056 * NV_DIG: mantissa takes than many decimal digits.
6057 * Plus 32: Playing safe. */
6058 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6059 /* large enough for "%#.#f" --chip */
6060 /* what about long double NVs? --jhi */
6063 U8 *vecstr = Null(U8*);
6075 STRLEN dotstrlen = 1;
6077 for (q = p; q < patend && *q != '%'; ++q) ;
6079 sv_catpvn(sv, p, q - p);
6108 case '*': /* printf("%*vX",":",$ipv6addr) */
6113 vecsv = va_arg(*args, SV*);
6114 else if (svix < svmax)
6115 vecsv = svargs[svix++];
6118 dotstr = SvPVx(vecsv,dotstrlen);
6137 case '1': case '2': case '3':
6138 case '4': case '5': case '6':
6139 case '7': case '8': case '9':
6142 width = width * 10 + (*q++ - '0');
6147 i = va_arg(*args, int);
6149 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6151 width = (i < 0) ? -i : i;
6162 i = va_arg(*args, int);
6164 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6165 precis = (i < 0) ? 0 : i;
6171 precis = precis * 10 + (*q++ - '0');
6178 vecsv = va_arg(*args, SV*);
6179 vecstr = (U8*)SvPVx(vecsv,veclen);
6180 utf = DO_UTF8(vecsv);
6182 else if (svix < svmax) {
6183 vecsv = svargs[svix++];
6184 vecstr = (U8*)SvPVx(vecsv,veclen);
6185 utf = DO_UTF8(vecsv);
6196 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6207 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6208 if (*(q + 1) == 'l') { /* lld, llf */
6235 uv = va_arg(*args, int);
6237 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6238 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6239 eptr = (char*)utf8buf;
6240 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6252 eptr = va_arg(*args, char*);
6254 #ifdef MACOS_TRADITIONAL
6255 /* On MacOS, %#s format is used for Pascal strings */
6260 elen = strlen(eptr);
6263 elen = sizeof nullstr - 1;
6266 else if (svix < svmax) {
6267 argsv = svargs[svix++];
6268 eptr = SvPVx(argsv, elen);
6269 if (DO_UTF8(argsv)) {
6270 if (has_precis && precis < elen) {
6272 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6275 if (width) { /* fudge width (can't fudge elen) */
6276 width += elen - sv_len_utf8(argsv);
6285 * The "%_" hack might have to be changed someday,
6286 * if ISO or ANSI decide to use '_' for something.
6287 * So we keep it hidden from users' code.
6291 argsv = va_arg(*args,SV*);
6292 eptr = SvPVx(argsv, elen);
6298 if (has_precis && elen > precis)
6308 uv = PTR2UV(va_arg(*args, void*));
6310 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
6330 iv = (IV)utf8_to_uv_chk(vecstr, &ulen, 0);
6340 case 'h': iv = (short)va_arg(*args, int); break;
6341 default: iv = va_arg(*args, int); break;
6342 case 'l': iv = va_arg(*args, long); break;
6343 case 'V': iv = va_arg(*args, IV); break;
6345 case 'q': iv = va_arg(*args, Quad_t); break;
6350 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6352 case 'h': iv = (short)iv; break;
6354 case 'l': iv = (long)iv; break;
6357 case 'q': iv = (Quad_t)iv; break;
6364 esignbuf[esignlen++] = plus;
6368 esignbuf[esignlen++] = '-';
6412 uv = utf8_to_uv_chk(vecstr, &ulen, 0);
6422 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6423 default: uv = va_arg(*args, unsigned); break;
6424 case 'l': uv = va_arg(*args, unsigned long); break;
6425 case 'V': uv = va_arg(*args, UV); break;
6427 case 'q': uv = va_arg(*args, Quad_t); break;
6432 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6434 case 'h': uv = (unsigned short)uv; break;
6436 case 'l': uv = (unsigned long)uv; break;
6439 case 'q': uv = (Quad_t)uv; break;
6445 eptr = ebuf + sizeof ebuf;
6451 p = (char*)((c == 'X')
6452 ? "0123456789ABCDEF" : "0123456789abcdef");
6458 esignbuf[esignlen++] = '0';
6459 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6465 *--eptr = '0' + dig;
6467 if (alt && *eptr != '0')
6473 *--eptr = '0' + dig;
6476 esignbuf[esignlen++] = '0';
6477 esignbuf[esignlen++] = 'b';
6480 default: /* it had better be ten or less */
6481 #if defined(PERL_Y2KWARN)
6482 if (ckWARN(WARN_Y2K)) {
6484 char *s = SvPV(sv,n);
6485 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6486 && (n == 2 || !isDIGIT(s[n-3])))
6488 Perl_warner(aTHX_ WARN_Y2K,
6489 "Possible Y2K bug: %%%c %s",
6490 c, "format string following '19'");
6496 *--eptr = '0' + dig;
6497 } while (uv /= base);
6500 elen = (ebuf + sizeof ebuf) - eptr;
6503 zeros = precis - elen;
6504 else if (precis == 0 && elen == 1 && *eptr == '0')
6509 /* FLOATING POINT */
6512 c = 'f'; /* maybe %F isn't supported here */
6518 /* This is evil, but floating point is even more evil */
6522 nv = va_arg(*args, NV);
6524 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6527 if (c != 'e' && c != 'E') {
6529 (void)Perl_frexp(nv, &i);
6530 if (i == PERL_INT_MIN)
6531 Perl_die(aTHX_ "panic: frexp");
6533 need = BIT_DIGITS(i);
6535 need += has_precis ? precis : 6; /* known default */
6539 need += 20; /* fudge factor */
6540 if (PL_efloatsize < need) {
6541 Safefree(PL_efloatbuf);
6542 PL_efloatsize = need + 20; /* more fudge */
6543 New(906, PL_efloatbuf, PL_efloatsize, char);
6544 PL_efloatbuf[0] = '\0';
6547 eptr = ebuf + sizeof ebuf;
6550 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6552 /* Copy the one or more characters in a long double
6553 * format before the 'base' ([efgEFG]) character to
6554 * the format string. */
6555 static char const prifldbl[] = PERL_PRIfldbl;
6556 char const *p = prifldbl + sizeof(prifldbl) - 3;
6557 while (p >= prifldbl) { *--eptr = *p--; }
6562 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6567 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6580 STORE_NUMERIC_STANDARD_SET_LOCAL();
6581 #ifdef USE_LOCALE_NUMERIC
6582 if (!was_standard && maybe_tainted)
6583 *maybe_tainted = TRUE;
6585 (void)sprintf(PL_efloatbuf, eptr, nv);
6586 RESTORE_NUMERIC_STANDARD();
6589 eptr = PL_efloatbuf;
6590 elen = strlen(PL_efloatbuf);
6597 i = SvCUR(sv) - origlen;
6600 case 'h': *(va_arg(*args, short*)) = i; break;
6601 default: *(va_arg(*args, int*)) = i; break;
6602 case 'l': *(va_arg(*args, long*)) = i; break;
6603 case 'V': *(va_arg(*args, IV*)) = i; break;
6605 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6609 else if (svix < svmax)
6610 sv_setuv_mg(svargs[svix++], (UV)i);
6611 continue; /* not "break" */
6618 if (!args && ckWARN(WARN_PRINTF) &&
6619 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6620 SV *msg = sv_newmortal();
6621 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6622 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6625 Perl_sv_catpvf(aTHX_ msg,
6626 "\"%%%c\"", c & 0xFF);
6628 Perl_sv_catpvf(aTHX_ msg,
6629 "\"%%\\%03"UVof"\"",
6632 sv_catpv(msg, "end of string");
6633 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6636 /* output mangled stuff ... */
6642 /* ... right here, because formatting flags should not apply */
6643 SvGROW(sv, SvCUR(sv) + elen + 1);
6645 memcpy(p, eptr, elen);
6648 SvCUR(sv) = p - SvPVX(sv);
6649 continue; /* not "break" */
6652 have = esignlen + zeros + elen;
6653 need = (have > width ? have : width);
6656 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6658 if (esignlen && fill == '0') {
6659 for (i = 0; i < esignlen; i++)
6663 memset(p, fill, gap);
6666 if (esignlen && fill != '0') {
6667 for (i = 0; i < esignlen; i++)
6671 for (i = zeros; i; i--)
6675 memcpy(p, eptr, elen);
6679 memset(p, ' ', gap);
6684 memcpy(p, dotstr, dotstrlen);
6688 vectorize = FALSE; /* done iterating over vecstr */
6693 SvCUR(sv) = p - SvPVX(sv);
6701 #if defined(USE_ITHREADS)
6703 #if defined(USE_THREADS)
6704 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6707 #ifndef GpREFCNT_inc
6708 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6712 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6713 #define av_dup(s) (AV*)sv_dup((SV*)s)
6714 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6715 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6716 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6717 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6718 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6719 #define io_dup(s) (IO*)sv_dup((SV*)s)
6720 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6721 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6722 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6723 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6724 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6727 Perl_re_dup(pTHX_ REGEXP *r)
6729 /* XXX fix when pmop->op_pmregexp becomes shared */
6730 return ReREFCNT_inc(r);
6734 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6738 return (PerlIO*)NULL;
6740 /* look for it in the table first */
6741 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6745 /* create anew and remember what it is */
6746 ret = PerlIO_fdupopen(fp);
6747 ptr_table_store(PL_ptr_table, fp, ret);
6752 Perl_dirp_dup(pTHX_ DIR *dp)
6761 Perl_gp_dup(pTHX_ GP *gp)
6766 /* look for it in the table first */
6767 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6771 /* create anew and remember what it is */
6772 Newz(0, ret, 1, GP);
6773 ptr_table_store(PL_ptr_table, gp, ret);
6776 ret->gp_refcnt = 0; /* must be before any other dups! */
6777 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6778 ret->gp_io = io_dup_inc(gp->gp_io);
6779 ret->gp_form = cv_dup_inc(gp->gp_form);
6780 ret->gp_av = av_dup_inc(gp->gp_av);
6781 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6782 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6783 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6784 ret->gp_cvgen = gp->gp_cvgen;
6785 ret->gp_flags = gp->gp_flags;
6786 ret->gp_line = gp->gp_line;
6787 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6792 Perl_mg_dup(pTHX_ MAGIC *mg)
6794 MAGIC *mgret = (MAGIC*)NULL;
6797 return (MAGIC*)NULL;
6798 /* look for it in the table first */
6799 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6803 for (; mg; mg = mg->mg_moremagic) {
6805 Newz(0, nmg, 1, MAGIC);
6809 mgprev->mg_moremagic = nmg;
6810 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6811 nmg->mg_private = mg->mg_private;
6812 nmg->mg_type = mg->mg_type;
6813 nmg->mg_flags = mg->mg_flags;
6814 if (mg->mg_type == 'r') {
6815 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6818 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6819 ? sv_dup_inc(mg->mg_obj)
6820 : sv_dup(mg->mg_obj);
6822 nmg->mg_len = mg->mg_len;
6823 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6824 if (mg->mg_ptr && mg->mg_type != 'g') {
6825 if (mg->mg_len >= 0) {
6826 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6827 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6828 AMT *amtp = (AMT*)mg->mg_ptr;
6829 AMT *namtp = (AMT*)nmg->mg_ptr;
6831 for (i = 1; i < NofAMmeth; i++) {
6832 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6836 else if (mg->mg_len == HEf_SVKEY)
6837 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6845 Perl_ptr_table_new(pTHX)
6848 Newz(0, tbl, 1, PTR_TBL_t);
6851 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6856 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6858 PTR_TBL_ENT_t *tblent;
6859 UV hash = PTR2UV(sv);
6861 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6862 for (; tblent; tblent = tblent->next) {
6863 if (tblent->oldval == sv)
6864 return tblent->newval;
6870 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6872 PTR_TBL_ENT_t *tblent, **otblent;
6873 /* XXX this may be pessimal on platforms where pointers aren't good
6874 * hash values e.g. if they grow faster in the most significant
6876 UV hash = PTR2UV(oldv);
6880 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6881 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6882 if (tblent->oldval == oldv) {
6883 tblent->newval = newv;
6888 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6889 tblent->oldval = oldv;
6890 tblent->newval = newv;
6891 tblent->next = *otblent;
6894 if (i && tbl->tbl_items > tbl->tbl_max)
6895 ptr_table_split(tbl);
6899 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6901 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6902 UV oldsize = tbl->tbl_max + 1;
6903 UV newsize = oldsize * 2;
6906 Renew(ary, newsize, PTR_TBL_ENT_t*);
6907 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6908 tbl->tbl_max = --newsize;
6910 for (i=0; i < oldsize; i++, ary++) {
6911 PTR_TBL_ENT_t **curentp, **entp, *ent;
6914 curentp = ary + oldsize;
6915 for (entp = ary, ent = *ary; ent; ent = *entp) {
6916 if ((newsize & PTR2UV(ent->oldval)) != i) {
6918 ent->next = *curentp;
6933 Perl_sv_dup(pTHX_ SV *sstr)
6937 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6939 /* look for it in the table first */
6940 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6944 /* create anew and remember what it is */
6946 ptr_table_store(PL_ptr_table, sstr, dstr);
6949 SvFLAGS(dstr) = SvFLAGS(sstr);
6950 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6951 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6954 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6955 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6956 PL_watch_pvx, SvPVX(sstr));
6959 switch (SvTYPE(sstr)) {
6964 SvANY(dstr) = new_XIV();
6965 SvIVX(dstr) = SvIVX(sstr);
6968 SvANY(dstr) = new_XNV();
6969 SvNVX(dstr) = SvNVX(sstr);
6972 SvANY(dstr) = new_XRV();
6973 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6976 SvANY(dstr) = new_XPV();
6977 SvCUR(dstr) = SvCUR(sstr);
6978 SvLEN(dstr) = SvLEN(sstr);
6980 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6981 else if (SvPVX(sstr) && SvLEN(sstr))
6982 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6984 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6987 SvANY(dstr) = new_XPVIV();
6988 SvCUR(dstr) = SvCUR(sstr);
6989 SvLEN(dstr) = SvLEN(sstr);
6990 SvIVX(dstr) = SvIVX(sstr);
6992 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6993 else if (SvPVX(sstr) && SvLEN(sstr))
6994 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6996 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6999 SvANY(dstr) = new_XPVNV();
7000 SvCUR(dstr) = SvCUR(sstr);
7001 SvLEN(dstr) = SvLEN(sstr);
7002 SvIVX(dstr) = SvIVX(sstr);
7003 SvNVX(dstr) = SvNVX(sstr);
7005 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7006 else if (SvPVX(sstr) && SvLEN(sstr))
7007 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7009 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7012 SvANY(dstr) = new_XPVMG();
7013 SvCUR(dstr) = SvCUR(sstr);
7014 SvLEN(dstr) = SvLEN(sstr);
7015 SvIVX(dstr) = SvIVX(sstr);
7016 SvNVX(dstr) = SvNVX(sstr);
7017 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7018 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7020 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7021 else if (SvPVX(sstr) && SvLEN(sstr))
7022 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7024 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7027 SvANY(dstr) = new_XPVBM();
7028 SvCUR(dstr) = SvCUR(sstr);
7029 SvLEN(dstr) = SvLEN(sstr);
7030 SvIVX(dstr) = SvIVX(sstr);
7031 SvNVX(dstr) = SvNVX(sstr);
7032 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7033 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7035 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7036 else if (SvPVX(sstr) && SvLEN(sstr))
7037 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7039 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7040 BmRARE(dstr) = BmRARE(sstr);
7041 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7042 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7045 SvANY(dstr) = new_XPVLV();
7046 SvCUR(dstr) = SvCUR(sstr);
7047 SvLEN(dstr) = SvLEN(sstr);
7048 SvIVX(dstr) = SvIVX(sstr);
7049 SvNVX(dstr) = SvNVX(sstr);
7050 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7051 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7053 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7054 else if (SvPVX(sstr) && SvLEN(sstr))
7055 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7057 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7058 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7059 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7060 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7061 LvTYPE(dstr) = LvTYPE(sstr);
7064 SvANY(dstr) = new_XPVGV();
7065 SvCUR(dstr) = SvCUR(sstr);
7066 SvLEN(dstr) = SvLEN(sstr);
7067 SvIVX(dstr) = SvIVX(sstr);
7068 SvNVX(dstr) = SvNVX(sstr);
7069 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7070 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7072 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7073 else if (SvPVX(sstr) && SvLEN(sstr))
7074 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7076 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7077 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7078 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7079 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7080 GvFLAGS(dstr) = GvFLAGS(sstr);
7081 GvGP(dstr) = gp_dup(GvGP(sstr));
7082 (void)GpREFCNT_inc(GvGP(dstr));
7085 SvANY(dstr) = new_XPVIO();
7086 SvCUR(dstr) = SvCUR(sstr);
7087 SvLEN(dstr) = SvLEN(sstr);
7088 SvIVX(dstr) = SvIVX(sstr);
7089 SvNVX(dstr) = SvNVX(sstr);
7090 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7091 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7093 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7094 else if (SvPVX(sstr) && SvLEN(sstr))
7095 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7097 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7098 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7099 if (IoOFP(sstr) == IoIFP(sstr))
7100 IoOFP(dstr) = IoIFP(dstr);
7102 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7103 /* PL_rsfp_filters entries have fake IoDIRP() */
7104 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7105 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7107 IoDIRP(dstr) = IoDIRP(sstr);
7108 IoLINES(dstr) = IoLINES(sstr);
7109 IoPAGE(dstr) = IoPAGE(sstr);
7110 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7111 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7112 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7113 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7114 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7115 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7116 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7117 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7118 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7119 IoTYPE(dstr) = IoTYPE(sstr);
7120 IoFLAGS(dstr) = IoFLAGS(sstr);
7123 SvANY(dstr) = new_XPVAV();
7124 SvCUR(dstr) = SvCUR(sstr);
7125 SvLEN(dstr) = SvLEN(sstr);
7126 SvIVX(dstr) = SvIVX(sstr);
7127 SvNVX(dstr) = SvNVX(sstr);
7128 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7129 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7130 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7131 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7132 if (AvARRAY((AV*)sstr)) {
7133 SV **dst_ary, **src_ary;
7134 SSize_t items = AvFILLp((AV*)sstr) + 1;
7136 src_ary = AvARRAY((AV*)sstr);
7137 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7138 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7139 SvPVX(dstr) = (char*)dst_ary;
7140 AvALLOC((AV*)dstr) = dst_ary;
7141 if (AvREAL((AV*)sstr)) {
7143 *dst_ary++ = sv_dup_inc(*src_ary++);
7147 *dst_ary++ = sv_dup(*src_ary++);
7149 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7150 while (items-- > 0) {
7151 *dst_ary++ = &PL_sv_undef;
7155 SvPVX(dstr) = Nullch;
7156 AvALLOC((AV*)dstr) = (SV**)NULL;
7160 SvANY(dstr) = new_XPVHV();
7161 SvCUR(dstr) = SvCUR(sstr);
7162 SvLEN(dstr) = SvLEN(sstr);
7163 SvIVX(dstr) = SvIVX(sstr);
7164 SvNVX(dstr) = SvNVX(sstr);
7165 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7166 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7167 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7168 if (HvARRAY((HV*)sstr)) {
7170 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7171 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7172 Newz(0, dxhv->xhv_array,
7173 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7174 while (i <= sxhv->xhv_max) {
7175 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7176 !!HvSHAREKEYS(sstr));
7179 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7182 SvPVX(dstr) = Nullch;
7183 HvEITER((HV*)dstr) = (HE*)NULL;
7185 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7186 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7189 SvANY(dstr) = new_XPVFM();
7190 FmLINES(dstr) = FmLINES(sstr);
7194 SvANY(dstr) = new_XPVCV();
7196 SvCUR(dstr) = SvCUR(sstr);
7197 SvLEN(dstr) = SvLEN(sstr);
7198 SvIVX(dstr) = SvIVX(sstr);
7199 SvNVX(dstr) = SvNVX(sstr);
7200 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7201 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7202 if (SvPVX(sstr) && SvLEN(sstr))
7203 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7205 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7206 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7207 CvSTART(dstr) = CvSTART(sstr);
7208 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7209 CvXSUB(dstr) = CvXSUB(sstr);
7210 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7211 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7212 CvDEPTH(dstr) = CvDEPTH(sstr);
7213 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7214 /* XXX padlists are real, but pretend to be not */
7215 AvREAL_on(CvPADLIST(sstr));
7216 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7217 AvREAL_off(CvPADLIST(sstr));
7218 AvREAL_off(CvPADLIST(dstr));
7221 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7222 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7223 CvFLAGS(dstr) = CvFLAGS(sstr);
7226 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7230 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7237 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7242 return (PERL_CONTEXT*)NULL;
7244 /* look for it in the table first */
7245 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7249 /* create anew and remember what it is */
7250 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7251 ptr_table_store(PL_ptr_table, cxs, ncxs);
7254 PERL_CONTEXT *cx = &cxs[ix];
7255 PERL_CONTEXT *ncx = &ncxs[ix];
7256 ncx->cx_type = cx->cx_type;
7257 if (CxTYPE(cx) == CXt_SUBST) {
7258 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7261 ncx->blk_oldsp = cx->blk_oldsp;
7262 ncx->blk_oldcop = cx->blk_oldcop;
7263 ncx->blk_oldretsp = cx->blk_oldretsp;
7264 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7265 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7266 ncx->blk_oldpm = cx->blk_oldpm;
7267 ncx->blk_gimme = cx->blk_gimme;
7268 switch (CxTYPE(cx)) {
7270 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7271 ? cv_dup_inc(cx->blk_sub.cv)
7272 : cv_dup(cx->blk_sub.cv));
7273 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7274 ? av_dup_inc(cx->blk_sub.argarray)
7276 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7277 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7278 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7279 ncx->blk_sub.lval = cx->blk_sub.lval;
7282 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7283 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7284 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7285 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7286 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7289 ncx->blk_loop.label = cx->blk_loop.label;
7290 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7291 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7292 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7293 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7294 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7295 ? cx->blk_loop.iterdata
7296 : gv_dup((GV*)cx->blk_loop.iterdata));
7297 ncx->blk_loop.oldcurpad
7298 = (SV**)ptr_table_fetch(PL_ptr_table,
7299 cx->blk_loop.oldcurpad);
7300 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7301 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7302 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7303 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7304 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7307 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7308 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7309 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7310 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7323 Perl_si_dup(pTHX_ PERL_SI *si)
7328 return (PERL_SI*)NULL;
7330 /* look for it in the table first */
7331 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7335 /* create anew and remember what it is */
7336 Newz(56, nsi, 1, PERL_SI);
7337 ptr_table_store(PL_ptr_table, si, nsi);
7339 nsi->si_stack = av_dup_inc(si->si_stack);
7340 nsi->si_cxix = si->si_cxix;
7341 nsi->si_cxmax = si->si_cxmax;
7342 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7343 nsi->si_type = si->si_type;
7344 nsi->si_prev = si_dup(si->si_prev);
7345 nsi->si_next = si_dup(si->si_next);
7346 nsi->si_markoff = si->si_markoff;
7351 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7352 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7353 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7354 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7355 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7356 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7357 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7358 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7359 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7360 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7361 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7362 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7365 #define pv_dup_inc(p) SAVEPV(p)
7366 #define pv_dup(p) SAVEPV(p)
7367 #define svp_dup_inc(p,pp) any_dup(p,pp)
7370 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7377 /* look for it in the table first */
7378 ret = ptr_table_fetch(PL_ptr_table, v);
7382 /* see if it is part of the interpreter structure */
7383 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7384 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7392 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7394 ANY *ss = proto_perl->Tsavestack;
7395 I32 ix = proto_perl->Tsavestack_ix;
7396 I32 max = proto_perl->Tsavestack_max;
7409 void (*dptr) (void*);
7410 void (*dxptr) (pTHXo_ void*);
7413 Newz(54, nss, max, ANY);
7419 case SAVEt_ITEM: /* normal string */
7420 sv = (SV*)POPPTR(ss,ix);
7421 TOPPTR(nss,ix) = sv_dup_inc(sv);
7422 sv = (SV*)POPPTR(ss,ix);
7423 TOPPTR(nss,ix) = sv_dup_inc(sv);
7425 case SAVEt_SV: /* scalar reference */
7426 sv = (SV*)POPPTR(ss,ix);
7427 TOPPTR(nss,ix) = sv_dup_inc(sv);
7428 gv = (GV*)POPPTR(ss,ix);
7429 TOPPTR(nss,ix) = gv_dup_inc(gv);
7431 case SAVEt_GENERIC_PVREF: /* generic char* */
7432 c = (char*)POPPTR(ss,ix);
7433 TOPPTR(nss,ix) = pv_dup(c);
7434 ptr = POPPTR(ss,ix);
7435 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7437 case SAVEt_GENERIC_SVREF: /* generic sv */
7438 case SAVEt_SVREF: /* scalar reference */
7439 sv = (SV*)POPPTR(ss,ix);
7440 TOPPTR(nss,ix) = sv_dup_inc(sv);
7441 ptr = POPPTR(ss,ix);
7442 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7444 case SAVEt_AV: /* array reference */
7445 av = (AV*)POPPTR(ss,ix);
7446 TOPPTR(nss,ix) = av_dup_inc(av);
7447 gv = (GV*)POPPTR(ss,ix);
7448 TOPPTR(nss,ix) = gv_dup(gv);
7450 case SAVEt_HV: /* hash reference */
7451 hv = (HV*)POPPTR(ss,ix);
7452 TOPPTR(nss,ix) = hv_dup_inc(hv);
7453 gv = (GV*)POPPTR(ss,ix);
7454 TOPPTR(nss,ix) = gv_dup(gv);
7456 case SAVEt_INT: /* int reference */
7457 ptr = POPPTR(ss,ix);
7458 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7459 intval = (int)POPINT(ss,ix);
7460 TOPINT(nss,ix) = intval;
7462 case SAVEt_LONG: /* long reference */
7463 ptr = POPPTR(ss,ix);
7464 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7465 longval = (long)POPLONG(ss,ix);
7466 TOPLONG(nss,ix) = longval;
7468 case SAVEt_I32: /* I32 reference */
7469 case SAVEt_I16: /* I16 reference */
7470 case SAVEt_I8: /* I8 reference */
7471 ptr = POPPTR(ss,ix);
7472 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7476 case SAVEt_IV: /* IV reference */
7477 ptr = POPPTR(ss,ix);
7478 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7482 case SAVEt_SPTR: /* SV* reference */
7483 ptr = POPPTR(ss,ix);
7484 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7485 sv = (SV*)POPPTR(ss,ix);
7486 TOPPTR(nss,ix) = sv_dup(sv);
7488 case SAVEt_VPTR: /* random* reference */
7489 ptr = POPPTR(ss,ix);
7490 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7491 ptr = POPPTR(ss,ix);
7492 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7494 case SAVEt_PPTR: /* char* reference */
7495 ptr = POPPTR(ss,ix);
7496 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7497 c = (char*)POPPTR(ss,ix);
7498 TOPPTR(nss,ix) = pv_dup(c);
7500 case SAVEt_HPTR: /* HV* reference */
7501 ptr = POPPTR(ss,ix);
7502 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7503 hv = (HV*)POPPTR(ss,ix);
7504 TOPPTR(nss,ix) = hv_dup(hv);
7506 case SAVEt_APTR: /* AV* reference */
7507 ptr = POPPTR(ss,ix);
7508 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7509 av = (AV*)POPPTR(ss,ix);
7510 TOPPTR(nss,ix) = av_dup(av);
7513 gv = (GV*)POPPTR(ss,ix);
7514 TOPPTR(nss,ix) = gv_dup(gv);
7516 case SAVEt_GP: /* scalar reference */
7517 gp = (GP*)POPPTR(ss,ix);
7518 TOPPTR(nss,ix) = gp = gp_dup(gp);
7519 (void)GpREFCNT_inc(gp);
7520 gv = (GV*)POPPTR(ss,ix);
7521 TOPPTR(nss,ix) = gv_dup_inc(c);
7522 c = (char*)POPPTR(ss,ix);
7523 TOPPTR(nss,ix) = pv_dup(c);
7530 sv = (SV*)POPPTR(ss,ix);
7531 TOPPTR(nss,ix) = sv_dup_inc(sv);
7534 ptr = POPPTR(ss,ix);
7535 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7536 /* these are assumed to be refcounted properly */
7537 switch (((OP*)ptr)->op_type) {
7544 TOPPTR(nss,ix) = ptr;
7549 TOPPTR(nss,ix) = Nullop;
7554 TOPPTR(nss,ix) = Nullop;
7557 c = (char*)POPPTR(ss,ix);
7558 TOPPTR(nss,ix) = pv_dup_inc(c);
7561 longval = POPLONG(ss,ix);
7562 TOPLONG(nss,ix) = longval;
7565 hv = (HV*)POPPTR(ss,ix);
7566 TOPPTR(nss,ix) = hv_dup_inc(hv);
7567 c = (char*)POPPTR(ss,ix);
7568 TOPPTR(nss,ix) = pv_dup_inc(c);
7572 case SAVEt_DESTRUCTOR:
7573 ptr = POPPTR(ss,ix);
7574 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7575 dptr = POPDPTR(ss,ix);
7576 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7578 case SAVEt_DESTRUCTOR_X:
7579 ptr = POPPTR(ss,ix);
7580 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7581 dxptr = POPDXPTR(ss,ix);
7582 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7584 case SAVEt_REGCONTEXT:
7590 case SAVEt_STACK_POS: /* Position on Perl stack */
7594 case SAVEt_AELEM: /* array element */
7595 sv = (SV*)POPPTR(ss,ix);
7596 TOPPTR(nss,ix) = sv_dup_inc(sv);
7599 av = (AV*)POPPTR(ss,ix);
7600 TOPPTR(nss,ix) = av_dup_inc(av);
7602 case SAVEt_HELEM: /* hash element */
7603 sv = (SV*)POPPTR(ss,ix);
7604 TOPPTR(nss,ix) = sv_dup_inc(sv);
7605 sv = (SV*)POPPTR(ss,ix);
7606 TOPPTR(nss,ix) = sv_dup_inc(sv);
7607 hv = (HV*)POPPTR(ss,ix);
7608 TOPPTR(nss,ix) = hv_dup_inc(hv);
7611 ptr = POPPTR(ss,ix);
7612 TOPPTR(nss,ix) = ptr;
7619 av = (AV*)POPPTR(ss,ix);
7620 TOPPTR(nss,ix) = av_dup(av);
7623 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7635 perl_clone(PerlInterpreter *proto_perl, UV flags)
7638 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7641 #ifdef PERL_IMPLICIT_SYS
7642 return perl_clone_using(proto_perl, flags,
7644 proto_perl->IMemShared,
7645 proto_perl->IMemParse,
7655 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7656 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7657 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7658 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7659 struct IPerlDir* ipD, struct IPerlSock* ipS,
7660 struct IPerlProc* ipP)
7662 /* XXX many of the string copies here can be optimized if they're
7663 * constants; they need to be allocated as common memory and just
7664 * their pointers copied. */
7668 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7670 PERL_SET_THX(pPerl);
7671 # else /* !PERL_OBJECT */
7672 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7673 PERL_SET_THX(my_perl);
7676 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7681 # else /* !DEBUGGING */
7682 Zero(my_perl, 1, PerlInterpreter);
7683 # endif /* DEBUGGING */
7687 PL_MemShared = ipMS;
7695 # endif /* PERL_OBJECT */
7696 #else /* !PERL_IMPLICIT_SYS */
7698 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7699 PERL_SET_THX(my_perl);
7702 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7707 # else /* !DEBUGGING */
7708 Zero(my_perl, 1, PerlInterpreter);
7709 # endif /* DEBUGGING */
7710 #endif /* PERL_IMPLICIT_SYS */
7713 PL_xiv_arenaroot = NULL;
7715 PL_xnv_arenaroot = NULL;
7717 PL_xrv_arenaroot = NULL;
7719 PL_xpv_arenaroot = NULL;
7721 PL_xpviv_arenaroot = NULL;
7722 PL_xpviv_root = NULL;
7723 PL_xpvnv_arenaroot = NULL;
7724 PL_xpvnv_root = NULL;
7725 PL_xpvcv_arenaroot = NULL;
7726 PL_xpvcv_root = NULL;
7727 PL_xpvav_arenaroot = NULL;
7728 PL_xpvav_root = NULL;
7729 PL_xpvhv_arenaroot = NULL;
7730 PL_xpvhv_root = NULL;
7731 PL_xpvmg_arenaroot = NULL;
7732 PL_xpvmg_root = NULL;
7733 PL_xpvlv_arenaroot = NULL;
7734 PL_xpvlv_root = NULL;
7735 PL_xpvbm_arenaroot = NULL;
7736 PL_xpvbm_root = NULL;
7737 PL_he_arenaroot = NULL;
7739 PL_nice_chunk = NULL;
7740 PL_nice_chunk_size = 0;
7743 PL_sv_root = Nullsv;
7744 PL_sv_arenaroot = Nullsv;
7746 PL_debug = proto_perl->Idebug;
7748 /* create SV map for pointer relocation */
7749 PL_ptr_table = ptr_table_new();
7751 /* initialize these special pointers as early as possible */
7752 SvANY(&PL_sv_undef) = NULL;
7753 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7754 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7755 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7758 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7760 SvANY(&PL_sv_no) = new_XPVNV();
7762 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7763 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7764 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7765 SvCUR(&PL_sv_no) = 0;
7766 SvLEN(&PL_sv_no) = 1;
7767 SvNVX(&PL_sv_no) = 0;
7768 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7771 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7773 SvANY(&PL_sv_yes) = new_XPVNV();
7775 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7776 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7777 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7778 SvCUR(&PL_sv_yes) = 1;
7779 SvLEN(&PL_sv_yes) = 2;
7780 SvNVX(&PL_sv_yes) = 1;
7781 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7783 /* create shared string table */
7784 PL_strtab = newHV();
7785 HvSHAREKEYS_off(PL_strtab);
7786 hv_ksplit(PL_strtab, 512);
7787 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7789 PL_compiling = proto_perl->Icompiling;
7790 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7791 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7792 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7793 if (!specialWARN(PL_compiling.cop_warnings))
7794 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7795 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7797 /* pseudo environmental stuff */
7798 PL_origargc = proto_perl->Iorigargc;
7800 New(0, PL_origargv, i+1, char*);
7801 PL_origargv[i] = '\0';
7803 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7805 PL_envgv = gv_dup(proto_perl->Ienvgv);
7806 PL_incgv = gv_dup(proto_perl->Iincgv);
7807 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7808 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7809 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7810 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7813 PL_minus_c = proto_perl->Iminus_c;
7814 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7815 PL_localpatches = proto_perl->Ilocalpatches;
7816 PL_splitstr = proto_perl->Isplitstr;
7817 PL_preprocess = proto_perl->Ipreprocess;
7818 PL_minus_n = proto_perl->Iminus_n;
7819 PL_minus_p = proto_perl->Iminus_p;
7820 PL_minus_l = proto_perl->Iminus_l;
7821 PL_minus_a = proto_perl->Iminus_a;
7822 PL_minus_F = proto_perl->Iminus_F;
7823 PL_doswitches = proto_perl->Idoswitches;
7824 PL_dowarn = proto_perl->Idowarn;
7825 PL_doextract = proto_perl->Idoextract;
7826 PL_sawampersand = proto_perl->Isawampersand;
7827 PL_unsafe = proto_perl->Iunsafe;
7828 PL_inplace = SAVEPV(proto_perl->Iinplace);
7829 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7830 PL_perldb = proto_perl->Iperldb;
7831 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7833 /* magical thingies */
7834 /* XXX time(&PL_basetime) when asked for? */
7835 PL_basetime = proto_perl->Ibasetime;
7836 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7838 PL_maxsysfd = proto_perl->Imaxsysfd;
7839 PL_multiline = proto_perl->Imultiline;
7840 PL_statusvalue = proto_perl->Istatusvalue;
7842 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7845 /* shortcuts to various I/O objects */
7846 PL_stdingv = gv_dup(proto_perl->Istdingv);
7847 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7848 PL_defgv = gv_dup(proto_perl->Idefgv);
7849 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7850 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7851 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7853 /* shortcuts to regexp stuff */
7854 PL_replgv = gv_dup(proto_perl->Ireplgv);
7856 /* shortcuts to misc objects */
7857 PL_errgv = gv_dup(proto_perl->Ierrgv);
7859 /* shortcuts to debugging objects */
7860 PL_DBgv = gv_dup(proto_perl->IDBgv);
7861 PL_DBline = gv_dup(proto_perl->IDBline);
7862 PL_DBsub = gv_dup(proto_perl->IDBsub);
7863 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7864 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7865 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7866 PL_lineary = av_dup(proto_perl->Ilineary);
7867 PL_dbargs = av_dup(proto_perl->Idbargs);
7870 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7871 PL_curstash = hv_dup(proto_perl->Tcurstash);
7872 PL_debstash = hv_dup(proto_perl->Idebstash);
7873 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7874 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7876 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7877 PL_endav = av_dup_inc(proto_perl->Iendav);
7878 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7879 PL_initav = av_dup_inc(proto_perl->Iinitav);
7881 PL_sub_generation = proto_perl->Isub_generation;
7883 /* funky return mechanisms */
7884 PL_forkprocess = proto_perl->Iforkprocess;
7886 /* subprocess state */
7887 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7889 /* internal state */
7890 PL_tainting = proto_perl->Itainting;
7891 PL_maxo = proto_perl->Imaxo;
7892 if (proto_perl->Iop_mask)
7893 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7895 PL_op_mask = Nullch;
7897 /* current interpreter roots */
7898 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7899 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7900 PL_main_start = proto_perl->Imain_start;
7901 PL_eval_root = proto_perl->Ieval_root;
7902 PL_eval_start = proto_perl->Ieval_start;
7904 /* runtime control stuff */
7905 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7906 PL_copline = proto_perl->Icopline;
7908 PL_filemode = proto_perl->Ifilemode;
7909 PL_lastfd = proto_perl->Ilastfd;
7910 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7913 PL_gensym = proto_perl->Igensym;
7914 PL_preambled = proto_perl->Ipreambled;
7915 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7916 PL_laststatval = proto_perl->Ilaststatval;
7917 PL_laststype = proto_perl->Ilaststype;
7918 PL_mess_sv = Nullsv;
7920 PL_orslen = proto_perl->Iorslen;
7921 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7922 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7924 /* interpreter atexit processing */
7925 PL_exitlistlen = proto_perl->Iexitlistlen;
7926 if (PL_exitlistlen) {
7927 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7928 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7931 PL_exitlist = (PerlExitListEntry*)NULL;
7932 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7934 PL_profiledata = NULL;
7935 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7936 /* PL_rsfp_filters entries have fake IoDIRP() */
7937 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7939 PL_compcv = cv_dup(proto_perl->Icompcv);
7940 PL_comppad = av_dup(proto_perl->Icomppad);
7941 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7942 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7943 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7944 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7945 proto_perl->Tcurpad);
7947 #ifdef HAVE_INTERP_INTERN
7948 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7951 /* more statics moved here */
7952 PL_generation = proto_perl->Igeneration;
7953 PL_DBcv = cv_dup(proto_perl->IDBcv);
7955 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7956 PL_in_clean_all = proto_perl->Iin_clean_all;
7958 PL_uid = proto_perl->Iuid;
7959 PL_euid = proto_perl->Ieuid;
7960 PL_gid = proto_perl->Igid;
7961 PL_egid = proto_perl->Iegid;
7962 PL_nomemok = proto_perl->Inomemok;
7963 PL_an = proto_perl->Ian;
7964 PL_cop_seqmax = proto_perl->Icop_seqmax;
7965 PL_op_seqmax = proto_perl->Iop_seqmax;
7966 PL_evalseq = proto_perl->Ievalseq;
7967 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7968 PL_origalen = proto_perl->Iorigalen;
7969 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7970 PL_osname = SAVEPV(proto_perl->Iosname);
7971 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7972 PL_sighandlerp = proto_perl->Isighandlerp;
7975 PL_runops = proto_perl->Irunops;
7977 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7980 PL_cshlen = proto_perl->Icshlen;
7981 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7984 PL_lex_state = proto_perl->Ilex_state;
7985 PL_lex_defer = proto_perl->Ilex_defer;
7986 PL_lex_expect = proto_perl->Ilex_expect;
7987 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7988 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7989 PL_lex_starts = proto_perl->Ilex_starts;
7990 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7991 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7992 PL_lex_op = proto_perl->Ilex_op;
7993 PL_lex_inpat = proto_perl->Ilex_inpat;
7994 PL_lex_inwhat = proto_perl->Ilex_inwhat;
7995 PL_lex_brackets = proto_perl->Ilex_brackets;
7996 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
7997 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
7998 PL_lex_casemods = proto_perl->Ilex_casemods;
7999 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8000 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8002 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8003 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8004 PL_nexttoke = proto_perl->Inexttoke;
8006 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8007 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8008 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8009 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8010 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8011 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8012 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8013 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8014 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8015 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8016 PL_pending_ident = proto_perl->Ipending_ident;
8017 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8019 PL_expect = proto_perl->Iexpect;
8021 PL_multi_start = proto_perl->Imulti_start;
8022 PL_multi_end = proto_perl->Imulti_end;
8023 PL_multi_open = proto_perl->Imulti_open;
8024 PL_multi_close = proto_perl->Imulti_close;
8026 PL_error_count = proto_perl->Ierror_count;
8027 PL_subline = proto_perl->Isubline;
8028 PL_subname = sv_dup_inc(proto_perl->Isubname);
8030 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8031 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8032 PL_padix = proto_perl->Ipadix;
8033 PL_padix_floor = proto_perl->Ipadix_floor;
8034 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8036 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8037 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8038 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8039 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8040 PL_last_lop_op = proto_perl->Ilast_lop_op;
8041 PL_in_my = proto_perl->Iin_my;
8042 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8044 PL_cryptseen = proto_perl->Icryptseen;
8047 PL_hints = proto_perl->Ihints;
8049 PL_amagic_generation = proto_perl->Iamagic_generation;
8051 #ifdef USE_LOCALE_COLLATE
8052 PL_collation_ix = proto_perl->Icollation_ix;
8053 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8054 PL_collation_standard = proto_perl->Icollation_standard;
8055 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8056 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8057 #endif /* USE_LOCALE_COLLATE */
8059 #ifdef USE_LOCALE_NUMERIC
8060 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8061 PL_numeric_standard = proto_perl->Inumeric_standard;
8062 PL_numeric_local = proto_perl->Inumeric_local;
8063 PL_numeric_radix = proto_perl->Inumeric_radix;
8064 #endif /* !USE_LOCALE_NUMERIC */
8066 /* utf8 character classes */
8067 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8068 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8069 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8070 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8071 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8072 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8073 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8074 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8075 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8076 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8077 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8078 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8079 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8080 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8081 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8082 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8083 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8086 PL_last_swash_hv = Nullhv; /* reinits on demand */
8087 PL_last_swash_klen = 0;
8088 PL_last_swash_key[0]= '\0';
8089 PL_last_swash_tmps = (U8*)NULL;
8090 PL_last_swash_slen = 0;
8092 /* perly.c globals */
8093 PL_yydebug = proto_perl->Iyydebug;
8094 PL_yynerrs = proto_perl->Iyynerrs;
8095 PL_yyerrflag = proto_perl->Iyyerrflag;
8096 PL_yychar = proto_perl->Iyychar;
8097 PL_yyval = proto_perl->Iyyval;
8098 PL_yylval = proto_perl->Iyylval;
8100 PL_glob_index = proto_perl->Iglob_index;
8101 PL_srand_called = proto_perl->Isrand_called;
8102 PL_uudmap['M'] = 0; /* reinits on demand */
8103 PL_bitcount = Nullch; /* reinits on demand */
8105 if (proto_perl->Ipsig_ptr) {
8106 int sig_num[] = { SIG_NUM };
8107 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8108 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8109 for (i = 1; PL_sig_name[i]; i++) {
8110 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8111 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8115 PL_psig_ptr = (SV**)NULL;
8116 PL_psig_name = (SV**)NULL;
8119 /* thrdvar.h stuff */
8122 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8123 PL_tmps_ix = proto_perl->Ttmps_ix;
8124 PL_tmps_max = proto_perl->Ttmps_max;
8125 PL_tmps_floor = proto_perl->Ttmps_floor;
8126 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8128 while (i <= PL_tmps_ix) {
8129 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8133 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8134 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8135 Newz(54, PL_markstack, i, I32);
8136 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8137 - proto_perl->Tmarkstack);
8138 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8139 - proto_perl->Tmarkstack);
8140 Copy(proto_perl->Tmarkstack, PL_markstack,
8141 PL_markstack_ptr - PL_markstack + 1, I32);
8143 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8144 * NOTE: unlike the others! */
8145 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8146 PL_scopestack_max = proto_perl->Tscopestack_max;
8147 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8148 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8150 /* next push_return() sets PL_retstack[PL_retstack_ix]
8151 * NOTE: unlike the others! */
8152 PL_retstack_ix = proto_perl->Tretstack_ix;
8153 PL_retstack_max = proto_perl->Tretstack_max;
8154 Newz(54, PL_retstack, PL_retstack_max, OP*);
8155 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8157 /* NOTE: si_dup() looks at PL_markstack */
8158 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8160 /* PL_curstack = PL_curstackinfo->si_stack; */
8161 PL_curstack = av_dup(proto_perl->Tcurstack);
8162 PL_mainstack = av_dup(proto_perl->Tmainstack);
8164 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8165 PL_stack_base = AvARRAY(PL_curstack);
8166 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8167 - proto_perl->Tstack_base);
8168 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8170 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8171 * NOTE: unlike the others! */
8172 PL_savestack_ix = proto_perl->Tsavestack_ix;
8173 PL_savestack_max = proto_perl->Tsavestack_max;
8174 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8175 PL_savestack = ss_dup(proto_perl);
8179 ENTER; /* perl_destruct() wants to LEAVE; */
8182 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8183 PL_top_env = &PL_start_env;
8185 PL_op = proto_perl->Top;
8188 PL_Xpv = (XPV*)NULL;
8189 PL_na = proto_perl->Tna;
8191 PL_statbuf = proto_perl->Tstatbuf;
8192 PL_statcache = proto_perl->Tstatcache;
8193 PL_statgv = gv_dup(proto_perl->Tstatgv);
8194 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8196 PL_timesbuf = proto_perl->Ttimesbuf;
8199 PL_tainted = proto_perl->Ttainted;
8200 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8201 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8202 PL_rs = sv_dup_inc(proto_perl->Trs);
8203 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8204 PL_ofslen = proto_perl->Tofslen;
8205 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8206 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8207 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8208 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8209 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8210 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8212 PL_restartop = proto_perl->Trestartop;
8213 PL_in_eval = proto_perl->Tin_eval;
8214 PL_delaymagic = proto_perl->Tdelaymagic;
8215 PL_dirty = proto_perl->Tdirty;
8216 PL_localizing = proto_perl->Tlocalizing;
8218 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8219 PL_protect = proto_perl->Tprotect;
8221 PL_errors = sv_dup_inc(proto_perl->Terrors);
8222 PL_av_fetch_sv = Nullsv;
8223 PL_hv_fetch_sv = Nullsv;
8224 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8225 PL_modcount = proto_perl->Tmodcount;
8226 PL_lastgotoprobe = Nullop;
8227 PL_dumpindent = proto_perl->Tdumpindent;
8229 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8230 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8231 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8232 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8233 PL_sortcxix = proto_perl->Tsortcxix;
8234 PL_efloatbuf = Nullch; /* reinits on demand */
8235 PL_efloatsize = 0; /* reinits on demand */
8239 PL_screamfirst = NULL;
8240 PL_screamnext = NULL;
8241 PL_maxscream = -1; /* reinits on demand */
8242 PL_lastscream = Nullsv;
8244 PL_watchaddr = NULL;
8245 PL_watchok = Nullch;
8247 PL_regdummy = proto_perl->Tregdummy;
8248 PL_regcomp_parse = Nullch;
8249 PL_regxend = Nullch;
8250 PL_regcode = (regnode*)NULL;
8253 PL_regprecomp = Nullch;
8258 PL_seen_zerolen = 0;
8260 PL_regcomp_rx = (regexp*)NULL;
8262 PL_colorset = 0; /* reinits PL_colors[] */
8263 /*PL_colors[6] = {0,0,0,0,0,0};*/
8264 PL_reg_whilem_seen = 0;
8265 PL_reginput = Nullch;
8268 PL_regstartp = (I32*)NULL;
8269 PL_regendp = (I32*)NULL;
8270 PL_reglastparen = (U32*)NULL;
8271 PL_regtill = Nullch;
8273 PL_reg_start_tmp = (char**)NULL;
8274 PL_reg_start_tmpl = 0;
8275 PL_regdata = (struct reg_data*)NULL;
8278 PL_reg_eval_set = 0;
8280 PL_regprogram = (regnode*)NULL;
8282 PL_regcc = (CURCUR*)NULL;
8283 PL_reg_call_cc = (struct re_cc_state*)NULL;
8284 PL_reg_re = (regexp*)NULL;
8285 PL_reg_ganch = Nullch;
8287 PL_reg_magic = (MAGIC*)NULL;
8289 PL_reg_oldcurpm = (PMOP*)NULL;
8290 PL_reg_curpm = (PMOP*)NULL;
8291 PL_reg_oldsaved = Nullch;
8292 PL_reg_oldsavedlen = 0;
8294 PL_reg_leftiter = 0;
8295 PL_reg_poscache = Nullch;
8296 PL_reg_poscache_size= 0;
8298 /* RE engine - function pointers */
8299 PL_regcompp = proto_perl->Tregcompp;
8300 PL_regexecp = proto_perl->Tregexecp;
8301 PL_regint_start = proto_perl->Tregint_start;
8302 PL_regint_string = proto_perl->Tregint_string;
8303 PL_regfree = proto_perl->Tregfree;
8305 PL_reginterp_cnt = 0;
8306 PL_reg_starttry = 0;
8309 return (PerlInterpreter*)pPerl;
8315 #else /* !USE_ITHREADS */
8321 #endif /* USE_ITHREADS */
8324 do_report_used(pTHXo_ SV *sv)
8326 if (SvTYPE(sv) != SVTYPEMASK) {
8327 PerlIO_printf(Perl_debug_log, "****\n");
8333 do_clean_objs(pTHXo_ SV *sv)
8337 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8338 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8339 if (SvWEAKREF(sv)) {
8350 /* XXX Might want to check arrays, etc. */
8353 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8355 do_clean_named_objs(pTHXo_ SV *sv)
8357 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8358 if ( SvOBJECT(GvSV(sv)) ||
8359 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8360 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8361 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8362 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8364 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8372 do_clean_all(pTHXo_ SV *sv)
8374 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8375 SvFLAGS(sv) |= SVf_BREAK;