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);
1288 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1289 PL_op_desc[PL_op->op_type]);
1291 (void)SvIOK_only(sv); /* validate number */
1297 =for apidoc sv_setiv_mg
1299 Like C<sv_setiv>, but also handles 'set' magic.
1305 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1312 =for apidoc sv_setuv
1314 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1321 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
1329 =for apidoc sv_setuv_mg
1331 Like C<sv_setuv>, but also handles 'set' magic.
1337 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1344 =for apidoc sv_setnv
1346 Copies a double into the given SV. Does not handle 'set' magic. See
1353 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1355 SV_CHECK_THINKFIRST(sv);
1356 switch (SvTYPE(sv)) {
1359 sv_upgrade(sv, SVt_NV);
1364 sv_upgrade(sv, SVt_PVNV);
1373 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1374 PL_op_name[PL_op->op_type]);
1377 (void)SvNOK_only(sv); /* validate number */
1382 =for apidoc sv_setnv_mg
1384 Like C<sv_setnv>, but also handles 'set' magic.
1390 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1397 S_not_a_number(pTHX_ SV *sv)
1402 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1403 /* each *s can expand to 4 chars + "...\0",
1404 i.e. need room for 8 chars */
1406 for (s = SvPVX(sv); *s && d < limit; s++) {
1408 if (ch & 128 && !isPRINT_LC(ch)) {
1417 else if (ch == '\r') {
1421 else if (ch == '\f') {
1425 else if (ch == '\\') {
1429 else if (isPRINT_LC(ch))
1444 Perl_warner(aTHX_ WARN_NUMERIC,
1445 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1446 PL_op_desc[PL_op->op_type]);
1448 Perl_warner(aTHX_ WARN_NUMERIC,
1449 "Argument \"%s\" isn't numeric", tmpbuf);
1452 /* the number can be converted to integer with atol() or atoll() */
1453 #define IS_NUMBER_TO_INT_BY_ATOL 0x01
1454 #define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1455 #define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1456 #define IS_NUMBER_NEG 0x08 /* not good to cache UV */
1457 #define IS_NUMBER_INFINITY 0x10 /* this is big */
1459 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1460 until proven guilty, assume that things are not that bad... */
1463 Perl_sv_2iv(pTHX_ register SV *sv)
1467 if (SvGMAGICAL(sv)) {
1472 return I_V(SvNVX(sv));
1474 if (SvPOKp(sv) && SvLEN(sv))
1477 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1478 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1484 if (SvTHINKFIRST(sv)) {
1487 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1488 (SvRV(tmpstr) != SvRV(sv)))
1489 return SvIV(tmpstr);
1490 return PTR2IV(SvRV(sv));
1492 if (SvREADONLY(sv) && SvFAKE(sv)) {
1493 sv_force_normal(sv);
1495 if (SvREADONLY(sv) && !SvOK(sv)) {
1496 if (ckWARN(WARN_UNINITIALIZED))
1503 return (IV)(SvUVX(sv));
1510 /* We can cache the IV/UV value even if it not good enough
1511 * to reconstruct NV, since the conversion to PV will prefer
1515 if (SvTYPE(sv) == SVt_NV)
1516 sv_upgrade(sv, SVt_PVNV);
1519 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1520 SvIVX(sv) = I_V(SvNVX(sv));
1522 SvUVX(sv) = U_V(SvNVX(sv));
1525 DEBUG_c(PerlIO_printf(Perl_debug_log,
1526 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1530 return (IV)SvUVX(sv);
1533 else if (SvPOKp(sv) && SvLEN(sv)) {
1534 I32 numtype = looks_like_number(sv);
1536 /* We want to avoid a possible problem when we cache an IV which
1537 may be later translated to an NV, and the resulting NV is not
1538 the translation of the initial data.
1540 This means that if we cache such an IV, we need to cache the
1541 NV as well. Moreover, we trade speed for space, and do not
1542 cache the NV if not needed.
1544 if (numtype & IS_NUMBER_NOT_IV) {
1545 /* May be not an integer. Need to cache NV if we cache IV
1546 * - otherwise future conversion to NV will be wrong. */
1549 d = Atof(SvPVX(sv));
1551 if (SvTYPE(sv) < SVt_PVNV)
1552 sv_upgrade(sv, SVt_PVNV);
1556 #if defined(USE_LONG_DOUBLE)
1557 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1558 PTR2UV(sv), SvNVX(sv)));
1560 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1561 PTR2UV(sv), SvNVX(sv)));
1563 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1564 SvIVX(sv) = I_V(SvNVX(sv));
1566 SvUVX(sv) = U_V(SvNVX(sv));
1571 else { /* The NV may be reconstructed from IV - safe to cache IV,
1572 which may be calculated by atol(). */
1573 if (SvTYPE(sv) < SVt_PVIV)
1574 sv_upgrade(sv, SVt_PVIV);
1576 SvIVX(sv) = Atol(SvPVX(sv));
1577 if (! numtype && ckWARN(WARN_NUMERIC))
1582 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1584 if (SvTYPE(sv) < SVt_IV)
1585 /* Typically the caller expects that sv_any is not NULL now. */
1586 sv_upgrade(sv, SVt_IV);
1589 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1590 PTR2UV(sv),SvIVX(sv)));
1591 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1595 Perl_sv_2uv(pTHX_ register SV *sv)
1599 if (SvGMAGICAL(sv)) {
1604 return U_V(SvNVX(sv));
1605 if (SvPOKp(sv) && SvLEN(sv))
1608 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1609 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1615 if (SvTHINKFIRST(sv)) {
1618 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1619 (SvRV(tmpstr) != SvRV(sv)))
1620 return SvUV(tmpstr);
1621 return PTR2UV(SvRV(sv));
1623 if (SvREADONLY(sv) && SvFAKE(sv)) {
1624 sv_force_normal(sv);
1626 if (SvREADONLY(sv) && !SvOK(sv)) {
1627 if (ckWARN(WARN_UNINITIALIZED))
1637 return (UV)SvIVX(sv);
1641 /* We can cache the IV/UV value even if it not good enough
1642 * to reconstruct NV, since the conversion to PV will prefer
1645 if (SvTYPE(sv) == SVt_NV)
1646 sv_upgrade(sv, SVt_PVNV);
1648 if (SvNVX(sv) >= -0.5) {
1650 SvUVX(sv) = U_V(SvNVX(sv));
1653 SvIVX(sv) = I_V(SvNVX(sv));
1655 DEBUG_c(PerlIO_printf(Perl_debug_log,
1656 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1659 (IV)(UV)SvIVX(sv)));
1660 return (UV)SvIVX(sv);
1663 else if (SvPOKp(sv) && SvLEN(sv)) {
1664 I32 numtype = looks_like_number(sv);
1666 /* We want to avoid a possible problem when we cache a UV which
1667 may be later translated to an NV, and the resulting NV is not
1668 the translation of the initial data.
1670 This means that if we cache such a UV, we need to cache the
1671 NV as well. Moreover, we trade speed for space, and do not
1672 cache the NV if not needed.
1674 if (numtype & IS_NUMBER_NOT_IV) {
1675 /* May be not an integer. Need to cache NV if we cache IV
1676 * - otherwise future conversion to NV will be wrong. */
1679 d = Atof(SvPVX(sv));
1681 if (SvTYPE(sv) < SVt_PVNV)
1682 sv_upgrade(sv, SVt_PVNV);
1686 #if defined(USE_LONG_DOUBLE)
1687 DEBUG_c(PerlIO_printf(Perl_debug_log,
1688 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1689 PTR2UV(sv), SvNVX(sv)));
1691 DEBUG_c(PerlIO_printf(Perl_debug_log,
1692 "0x%"UVxf" 2nv(%g)\n",
1693 PTR2UV(sv), SvNVX(sv)));
1695 if (SvNVX(sv) < -0.5) {
1696 SvIVX(sv) = I_V(SvNVX(sv));
1699 SvUVX(sv) = U_V(SvNVX(sv));
1703 else if (numtype & IS_NUMBER_NEG) {
1704 /* The NV may be reconstructed from IV - safe to cache IV,
1705 which may be calculated by atol(). */
1706 if (SvTYPE(sv) == SVt_PV)
1707 sv_upgrade(sv, SVt_PVIV);
1709 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1711 else if (numtype) { /* Non-negative */
1712 /* The NV may be reconstructed from UV - safe to cache UV,
1713 which may be calculated by strtoul()/atol. */
1714 if (SvTYPE(sv) == SVt_PV)
1715 sv_upgrade(sv, SVt_PVIV);
1717 (void)SvIsUV_on(sv);
1719 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1720 #else /* no atou(), but we know the number fits into IV... */
1721 /* The only problem may be if it is negative... */
1722 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1725 else { /* Not a number. Cache 0. */
1726 if (SvTYPE(sv) < SVt_PVIV)
1727 sv_upgrade(sv, SVt_PVIV);
1729 (void)SvIsUV_on(sv);
1730 SvUVX(sv) = 0; /* We assume that 0s have the
1731 same bitmap in IV and UV. */
1732 if (ckWARN(WARN_NUMERIC))
1737 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1738 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1741 if (SvTYPE(sv) < SVt_IV)
1742 /* Typically the caller expects that sv_any is not NULL now. */
1743 sv_upgrade(sv, SVt_IV);
1747 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1748 PTR2UV(sv),SvUVX(sv)));
1749 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1753 Perl_sv_2nv(pTHX_ register SV *sv)
1757 if (SvGMAGICAL(sv)) {
1761 if (SvPOKp(sv) && SvLEN(sv)) {
1762 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1764 return Atof(SvPVX(sv));
1768 return (NV)SvUVX(sv);
1770 return (NV)SvIVX(sv);
1773 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1774 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1780 if (SvTHINKFIRST(sv)) {
1783 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1784 (SvRV(tmpstr) != SvRV(sv)))
1785 return SvNV(tmpstr);
1786 return PTR2NV(SvRV(sv));
1788 if (SvREADONLY(sv) && SvFAKE(sv)) {
1789 sv_force_normal(sv);
1791 if (SvREADONLY(sv) && !SvOK(sv)) {
1792 if (ckWARN(WARN_UNINITIALIZED))
1797 if (SvTYPE(sv) < SVt_NV) {
1798 if (SvTYPE(sv) == SVt_IV)
1799 sv_upgrade(sv, SVt_PVNV);
1801 sv_upgrade(sv, SVt_NV);
1802 #if defined(USE_LONG_DOUBLE)
1804 STORE_NUMERIC_LOCAL_SET_STANDARD();
1805 PerlIO_printf(Perl_debug_log,
1806 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1807 PTR2UV(sv), SvNVX(sv));
1808 RESTORE_NUMERIC_LOCAL();
1812 STORE_NUMERIC_LOCAL_SET_STANDARD();
1813 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1814 PTR2UV(sv), SvNVX(sv));
1815 RESTORE_NUMERIC_LOCAL();
1819 else if (SvTYPE(sv) < SVt_PVNV)
1820 sv_upgrade(sv, SVt_PVNV);
1822 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1824 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1826 else if (SvPOKp(sv) && SvLEN(sv)) {
1827 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1829 SvNVX(sv) = Atof(SvPVX(sv));
1832 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1834 if (SvTYPE(sv) < SVt_NV)
1835 /* Typically the caller expects that sv_any is not NULL now. */
1836 sv_upgrade(sv, SVt_NV);
1840 #if defined(USE_LONG_DOUBLE)
1842 STORE_NUMERIC_LOCAL_SET_STANDARD();
1843 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1844 PTR2UV(sv), SvNVX(sv));
1845 RESTORE_NUMERIC_LOCAL();
1849 STORE_NUMERIC_LOCAL_SET_STANDARD();
1850 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1851 PTR2UV(sv), SvNVX(sv));
1852 RESTORE_NUMERIC_LOCAL();
1859 S_asIV(pTHX_ SV *sv)
1861 I32 numtype = looks_like_number(sv);
1864 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1865 return Atol(SvPVX(sv));
1867 if (ckWARN(WARN_NUMERIC))
1870 d = Atof(SvPVX(sv));
1875 S_asUV(pTHX_ SV *sv)
1877 I32 numtype = looks_like_number(sv);
1880 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1881 return Strtoul(SvPVX(sv), Null(char**), 10);
1884 if (ckWARN(WARN_NUMERIC))
1887 return U_V(Atof(SvPVX(sv)));
1891 * Returns a combination of (advisory only - can get false negatives)
1892 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1894 * 0 if does not look like number.
1896 * In fact possible values are 0 and
1897 * IS_NUMBER_TO_INT_BY_ATOL 123
1898 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1899 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1900 * IS_NUMBER_INFINITY
1901 * with a possible addition of IS_NUMBER_NEG.
1905 =for apidoc looks_like_number
1907 Test if an the content of an SV looks like a number (or is a
1914 Perl_looks_like_number(pTHX_ SV *sv)
1917 register char *send;
1918 register char *sbegin;
1919 register char *nbegin;
1928 else if (SvPOKp(sv))
1929 sbegin = SvPV(sv, len);
1932 send = sbegin + len;
1939 numtype = IS_NUMBER_NEG;
1946 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1947 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1951 /* next must be digit or the radix separator or beginning of infinity */
1955 } while (isDIGIT(*s));
1957 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1958 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1960 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1963 #ifdef USE_LOCALE_NUMERIC
1964 || IS_NUMERIC_RADIX(*s)
1968 numtype |= IS_NUMBER_NOT_IV;
1969 while (isDIGIT(*s)) /* optional digits after the radix */
1974 #ifdef USE_LOCALE_NUMERIC
1975 || IS_NUMERIC_RADIX(*s)
1979 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1980 /* no digits before the radix means we need digits after it */
1984 } while (isDIGIT(*s));
1989 else if (*s == 'I' || *s == 'i') {
1990 s++; if (*s != 'N' && *s != 'n') return 0;
1991 s++; if (*s != 'F' && *s != 'f') return 0;
1992 s++; if (*s == 'I' || *s == 'i') {
1993 s++; if (*s != 'N' && *s != 'n') return 0;
1994 s++; if (*s != 'I' && *s != 'i') return 0;
1995 s++; if (*s != 'T' && *s != 't') return 0;
1996 s++; if (*s != 'Y' && *s != 'y') return 0;
2005 numtype = IS_NUMBER_INFINITY;
2007 /* we can have an optional exponent part */
2008 if (*s == 'e' || *s == 'E') {
2009 numtype &= ~IS_NUMBER_NEG;
2010 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2012 if (*s == '+' || *s == '-')
2017 } while (isDIGIT(*s));
2027 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2028 return IS_NUMBER_TO_INT_BY_ATOL;
2033 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2036 return sv_2pv(sv, &n_a);
2039 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2041 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2043 char *ptr = buf + TYPE_CHARS(UV);
2057 *--ptr = '0' + (uv % 10);
2066 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2071 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2072 char *tmpbuf = tbuf;
2078 if (SvGMAGICAL(sv)) {
2086 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2088 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2093 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2098 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2099 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2106 if (SvTHINKFIRST(sv)) {
2109 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2110 (SvRV(tmpstr) != SvRV(sv)))
2111 return SvPV(tmpstr,*lp);
2118 switch (SvTYPE(sv)) {
2120 if ( ((SvFLAGS(sv) &
2121 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2122 == (SVs_OBJECT|SVs_RMG))
2123 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2124 && (mg = mg_find(sv, 'r'))) {
2125 regexp *re = (regexp *)mg->mg_obj;
2128 char *fptr = "msix";
2133 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2135 while((ch = *fptr++)) {
2137 reflags[left++] = ch;
2140 reflags[right--] = ch;
2145 reflags[left] = '-';
2149 mg->mg_len = re->prelen + 4 + left;
2150 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2151 Copy("(?", mg->mg_ptr, 2, char);
2152 Copy(reflags, mg->mg_ptr+2, left, char);
2153 Copy(":", mg->mg_ptr+left+2, 1, char);
2154 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2155 mg->mg_ptr[mg->mg_len - 1] = ')';
2156 mg->mg_ptr[mg->mg_len] = 0;
2158 PL_reginterp_cnt += re->program[0].next_off;
2170 case SVt_PVBM: if (SvROK(sv))
2173 s = "SCALAR"; break;
2174 case SVt_PVLV: s = "LVALUE"; break;
2175 case SVt_PVAV: s = "ARRAY"; break;
2176 case SVt_PVHV: s = "HASH"; break;
2177 case SVt_PVCV: s = "CODE"; break;
2178 case SVt_PVGV: s = "GLOB"; break;
2179 case SVt_PVFM: s = "FORMAT"; break;
2180 case SVt_PVIO: s = "IO"; break;
2181 default: s = "UNKNOWN"; break;
2185 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2188 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2194 if (SvREADONLY(sv) && !SvOK(sv)) {
2195 if (ckWARN(WARN_UNINITIALIZED))
2205 else if (SvNOKp(sv)) { /* See note in sv_2uv() */
2206 /* XXXX 64-bit? IV may have better precision... */
2207 /* I tried changing this to be 64-bit-aware and
2208 * the t/op/numconvert.t became very, very, angry.
2210 if (SvTYPE(sv) < SVt_PVNV)
2211 sv_upgrade(sv, SVt_PVNV);
2212 /* The +20 is pure guesswork. Configure test needed. --jhi */
2213 SvGROW(sv, NV_DIG + 20);
2215 olderrno = errno; /* some Xenix systems wipe out errno here */
2217 if (SvNVX(sv) == 0.0)
2218 (void)strcpy(s,"0");
2222 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2225 #ifdef FIXNEGATIVEZERO
2226 if (*s == '-' && s[1] == '0' && !s[2])
2235 else if (SvIOKp(sv)) {
2236 U32 isIOK = SvIOK(sv);
2237 U32 isUIOK = SvIsUV(sv);
2238 char buf[TYPE_CHARS(UV)];
2241 if (SvTYPE(sv) < SVt_PVIV)
2242 sv_upgrade(sv, SVt_PVIV);
2244 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2246 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2247 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2248 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2249 SvCUR_set(sv, ebuf - ptr);
2261 if (ckWARN(WARN_UNINITIALIZED)
2262 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2265 if (SvTYPE(sv) < SVt_PV)
2266 /* Typically the caller expects that sv_any is not NULL now. */
2267 sv_upgrade(sv, SVt_PV);
2270 *lp = s - SvPVX(sv);
2273 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2274 PTR2UV(sv),SvPVX(sv)));
2278 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2279 /* Sneaky stuff here */
2283 tsv = newSVpv(tmpbuf, 0);
2299 len = strlen(tmpbuf);
2301 #ifdef FIXNEGATIVEZERO
2302 if (len == 2 && t[0] == '-' && t[1] == '0') {
2307 (void)SvUPGRADE(sv, SVt_PV);
2309 s = SvGROW(sv, len + 1);
2318 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2321 return sv_2pvbyte(sv, &n_a);
2325 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2327 return sv_2pv(sv,lp);
2331 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2334 return sv_2pvutf8(sv, &n_a);
2338 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2340 sv_utf8_upgrade(sv);
2341 return SvPV(sv,*lp);
2344 /* This function is only called on magical items */
2346 Perl_sv_2bool(pTHX_ register SV *sv)
2355 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2356 (SvRV(tmpsv) != SvRV(sv)))
2357 return SvTRUE(tmpsv);
2358 return SvRV(sv) != 0;
2361 register XPV* Xpvtmp;
2362 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2363 (*Xpvtmp->xpv_pv > '0' ||
2364 Xpvtmp->xpv_cur > 1 ||
2365 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2372 return SvIVX(sv) != 0;
2375 return SvNVX(sv) != 0.0;
2383 =for apidoc sv_utf8_upgrade
2385 Convert the PV of an SV to its UTF8-encoded form.
2391 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2396 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2399 /* This function could be much more efficient if we had a FLAG in SVs
2400 * to signal if there are any hibit chars in the PV.
2401 * Given that there isn't make loop fast as possible
2407 if ((hibit = *t++ & 0x80))
2413 if (SvREADONLY(sv) && SvFAKE(sv)) {
2414 sv_force_normal(sv);
2417 len = SvCUR(sv) + 1; /* Plus the \0 */
2418 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2419 SvCUR(sv) = len - 1;
2421 Safefree(s); /* No longer using what was there before. */
2422 SvLEN(sv) = len; /* No longer know the real size. */
2428 =for apidoc sv_utf8_downgrade
2430 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2431 This may not be possible if the PV contains non-byte encoding characters;
2432 if this is the case, either returns false or, if C<fail_ok> is not
2439 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2441 if (SvPOK(sv) && SvUTF8(sv)) {
2443 char *c = SvPVX(sv);
2444 STRLEN len = SvCUR(sv);
2446 if (!utf8_to_bytes((U8*)c, &len)) {
2451 Perl_croak(aTHX_ "Wide character in %s",
2452 PL_op_desc[PL_op->op_type]);
2454 Perl_croak(aTHX_ "Wide character");
2466 =for apidoc sv_utf8_encode
2468 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2469 flag so that it looks like bytes again. Nothing calls this.
2475 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2477 sv_utf8_upgrade(sv);
2482 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2487 bool has_utf = FALSE;
2488 if (!sv_utf8_downgrade(sv, TRUE))
2491 /* it is actually just a matter of turning the utf8 flag on, but
2492 * we want to make sure everything inside is valid utf8 first.
2495 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2509 /* Note: sv_setsv() should not be called with a source string that needs
2510 * to be reused, since it may destroy the source string if it is marked
2515 =for apidoc sv_setsv
2517 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2518 The source SV may be destroyed if it is mortal. Does not handle 'set'
2519 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2526 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2528 register U32 sflags;
2534 SV_CHECK_THINKFIRST(dstr);
2536 sstr = &PL_sv_undef;
2537 stype = SvTYPE(sstr);
2538 dtype = SvTYPE(dstr);
2542 /* There's a lot of redundancy below but we're going for speed here */
2547 if (dtype != SVt_PVGV) {
2548 (void)SvOK_off(dstr);
2556 sv_upgrade(dstr, SVt_IV);
2559 sv_upgrade(dstr, SVt_PVNV);
2563 sv_upgrade(dstr, SVt_PVIV);
2566 (void)SvIOK_only(dstr);
2567 SvIVX(dstr) = SvIVX(sstr);
2570 if (SvTAINTED(sstr))
2581 sv_upgrade(dstr, SVt_NV);
2586 sv_upgrade(dstr, SVt_PVNV);
2589 SvNVX(dstr) = SvNVX(sstr);
2590 (void)SvNOK_only(dstr);
2591 if (SvTAINTED(sstr))
2599 sv_upgrade(dstr, SVt_RV);
2600 else if (dtype == SVt_PVGV &&
2601 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2604 if (GvIMPORTED(dstr) != GVf_IMPORTED
2605 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2607 GvIMPORTED_on(dstr);
2618 sv_upgrade(dstr, SVt_PV);
2621 if (dtype < SVt_PVIV)
2622 sv_upgrade(dstr, SVt_PVIV);
2625 if (dtype < SVt_PVNV)
2626 sv_upgrade(dstr, SVt_PVNV);
2633 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2634 PL_op_name[PL_op->op_type]);
2636 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2640 if (dtype <= SVt_PVGV) {
2642 if (dtype != SVt_PVGV) {
2643 char *name = GvNAME(sstr);
2644 STRLEN len = GvNAMELEN(sstr);
2645 sv_upgrade(dstr, SVt_PVGV);
2646 sv_magic(dstr, dstr, '*', Nullch, 0);
2647 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2648 GvNAME(dstr) = savepvn(name, len);
2649 GvNAMELEN(dstr) = len;
2650 SvFAKE_on(dstr); /* can coerce to non-glob */
2652 /* ahem, death to those who redefine active sort subs */
2653 else if (PL_curstackinfo->si_type == PERLSI_SORT
2654 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2655 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2657 (void)SvOK_off(dstr);
2658 GvINTRO_off(dstr); /* one-shot flag */
2660 GvGP(dstr) = gp_ref(GvGP(sstr));
2661 if (SvTAINTED(sstr))
2663 if (GvIMPORTED(dstr) != GVf_IMPORTED
2664 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2666 GvIMPORTED_on(dstr);
2674 if (SvGMAGICAL(sstr)) {
2676 if (SvTYPE(sstr) != stype) {
2677 stype = SvTYPE(sstr);
2678 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2682 if (stype == SVt_PVLV)
2683 (void)SvUPGRADE(dstr, SVt_PVNV);
2685 (void)SvUPGRADE(dstr, stype);
2688 sflags = SvFLAGS(sstr);
2690 if (sflags & SVf_ROK) {
2691 if (dtype >= SVt_PV) {
2692 if (dtype == SVt_PVGV) {
2693 SV *sref = SvREFCNT_inc(SvRV(sstr));
2695 int intro = GvINTRO(dstr);
2700 GvINTRO_off(dstr); /* one-shot flag */
2701 Newz(602,gp, 1, GP);
2702 GvGP(dstr) = gp_ref(gp);
2703 GvSV(dstr) = NEWSV(72,0);
2704 GvLINE(dstr) = CopLINE(PL_curcop);
2705 GvEGV(dstr) = (GV*)dstr;
2708 switch (SvTYPE(sref)) {
2711 SAVESPTR(GvAV(dstr));
2713 dref = (SV*)GvAV(dstr);
2714 GvAV(dstr) = (AV*)sref;
2715 if (!GvIMPORTED_AV(dstr)
2716 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2718 GvIMPORTED_AV_on(dstr);
2723 SAVESPTR(GvHV(dstr));
2725 dref = (SV*)GvHV(dstr);
2726 GvHV(dstr) = (HV*)sref;
2727 if (!GvIMPORTED_HV(dstr)
2728 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2730 GvIMPORTED_HV_on(dstr);
2735 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2736 SvREFCNT_dec(GvCV(dstr));
2737 GvCV(dstr) = Nullcv;
2738 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2739 PL_sub_generation++;
2741 SAVESPTR(GvCV(dstr));
2744 dref = (SV*)GvCV(dstr);
2745 if (GvCV(dstr) != (CV*)sref) {
2746 CV* cv = GvCV(dstr);
2748 if (!GvCVGEN((GV*)dstr) &&
2749 (CvROOT(cv) || CvXSUB(cv)))
2752 /* ahem, death to those who redefine
2753 * active sort subs */
2754 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2755 PL_sortcop == CvSTART(cv))
2757 "Can't redefine active sort subroutine %s",
2758 GvENAME((GV*)dstr));
2759 /* Redefining a sub - warning is mandatory if
2760 it was a const and its value changed. */
2761 if (ckWARN(WARN_REDEFINE)
2763 && (!CvCONST((CV*)sref)
2764 || sv_cmp(cv_const_sv(cv),
2765 cv_const_sv((CV*)sref)))))
2767 Perl_warner(aTHX_ WARN_REDEFINE,
2769 ? "Constant subroutine %s redefined"
2770 : "Subroutine %s redefined",
2771 GvENAME((GV*)dstr));
2774 cv_ckproto(cv, (GV*)dstr,
2775 SvPOK(sref) ? SvPVX(sref) : Nullch);
2777 GvCV(dstr) = (CV*)sref;
2778 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2779 GvASSUMECV_on(dstr);
2780 PL_sub_generation++;
2782 if (!GvIMPORTED_CV(dstr)
2783 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2785 GvIMPORTED_CV_on(dstr);
2790 SAVESPTR(GvIOp(dstr));
2792 dref = (SV*)GvIOp(dstr);
2793 GvIOp(dstr) = (IO*)sref;
2797 SAVESPTR(GvFORM(dstr));
2799 dref = (SV*)GvFORM(dstr);
2800 GvFORM(dstr) = (CV*)sref;
2804 SAVESPTR(GvSV(dstr));
2806 dref = (SV*)GvSV(dstr);
2808 if (!GvIMPORTED_SV(dstr)
2809 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2811 GvIMPORTED_SV_on(dstr);
2819 if (SvTAINTED(sstr))
2824 (void)SvOOK_off(dstr); /* backoff */
2826 Safefree(SvPVX(dstr));
2827 SvLEN(dstr)=SvCUR(dstr)=0;
2830 (void)SvOK_off(dstr);
2831 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2833 if (sflags & SVp_NOK) {
2835 SvNVX(dstr) = SvNVX(sstr);
2837 if (sflags & SVp_IOK) {
2838 (void)SvIOK_on(dstr);
2839 SvIVX(dstr) = SvIVX(sstr);
2840 if (sflags & SVf_IVisUV)
2843 if (SvAMAGIC(sstr)) {
2847 else if (sflags & SVp_POK) {
2850 * Check to see if we can just swipe the string. If so, it's a
2851 * possible small lose on short strings, but a big win on long ones.
2852 * It might even be a win on short strings if SvPVX(dstr)
2853 * has to be allocated and SvPVX(sstr) has to be freed.
2856 if (SvTEMP(sstr) && /* slated for free anyway? */
2857 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2858 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2859 SvLEN(sstr) && /* and really is a string */
2860 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
2862 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2864 SvFLAGS(dstr) &= ~SVf_OOK;
2865 Safefree(SvPVX(dstr) - SvIVX(dstr));
2867 else if (SvLEN(dstr))
2868 Safefree(SvPVX(dstr));
2870 (void)SvPOK_only(dstr);
2871 SvPV_set(dstr, SvPVX(sstr));
2872 SvLEN_set(dstr, SvLEN(sstr));
2873 SvCUR_set(dstr, SvCUR(sstr));
2876 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2877 SvPV_set(sstr, Nullch);
2882 else { /* have to copy actual string */
2883 STRLEN len = SvCUR(sstr);
2885 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2886 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2887 SvCUR_set(dstr, len);
2888 *SvEND(dstr) = '\0';
2889 (void)SvPOK_only(dstr);
2891 if ((sflags & SVf_UTF8) && !IN_BYTE)
2894 if (sflags & SVp_NOK) {
2896 SvNVX(dstr) = SvNVX(sstr);
2898 if (sflags & SVp_IOK) {
2899 (void)SvIOK_on(dstr);
2900 SvIVX(dstr) = SvIVX(sstr);
2901 if (sflags & SVf_IVisUV)
2905 else if (sflags & SVp_NOK) {
2906 SvNVX(dstr) = SvNVX(sstr);
2907 (void)SvNOK_only(dstr);
2908 if (sflags & SVf_IOK) {
2909 (void)SvIOK_on(dstr);
2910 SvIVX(dstr) = SvIVX(sstr);
2911 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2912 if (sflags & SVf_IVisUV)
2916 else if (sflags & SVp_IOK) {
2917 (void)SvIOK_only(dstr);
2918 SvIVX(dstr) = SvIVX(sstr);
2919 if (sflags & SVf_IVisUV)
2923 if (dtype == SVt_PVGV) {
2924 if (ckWARN(WARN_MISC))
2925 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2928 (void)SvOK_off(dstr);
2930 if (SvTAINTED(sstr))
2935 =for apidoc sv_setsv_mg
2937 Like C<sv_setsv>, but also handles 'set' magic.
2943 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2945 sv_setsv(dstr,sstr);
2950 =for apidoc sv_setpvn
2952 Copies a string into an SV. The C<len> parameter indicates the number of
2953 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2959 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2961 register char *dptr;
2963 /* len is STRLEN which is unsigned, need to copy to signed */
2967 SV_CHECK_THINKFIRST(sv);
2972 (void)SvUPGRADE(sv, SVt_PV);
2974 SvGROW(sv, len + 1);
2976 Move(ptr,dptr,len,char);
2979 (void)SvPOK_only(sv); /* validate pointer */
2984 =for apidoc sv_setpvn_mg
2986 Like C<sv_setpvn>, but also handles 'set' magic.
2992 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2994 sv_setpvn(sv,ptr,len);
2999 =for apidoc sv_setpv
3001 Copies a string into an SV. The string must be null-terminated. Does not
3002 handle 'set' magic. See C<sv_setpv_mg>.
3008 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3010 register STRLEN len;
3012 SV_CHECK_THINKFIRST(sv);
3018 (void)SvUPGRADE(sv, SVt_PV);
3020 SvGROW(sv, len + 1);
3021 Move(ptr,SvPVX(sv),len+1,char);
3023 (void)SvPOK_only(sv); /* validate pointer */
3028 =for apidoc sv_setpv_mg
3030 Like C<sv_setpv>, but also handles 'set' magic.
3036 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3043 =for apidoc sv_usepvn
3045 Tells an SV to use C<ptr> to find its string value. Normally the string is
3046 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3047 The C<ptr> should point to memory that was allocated by C<malloc>. The
3048 string length, C<len>, must be supplied. This function will realloc the
3049 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3050 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3051 See C<sv_usepvn_mg>.
3057 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3059 SV_CHECK_THINKFIRST(sv);
3060 (void)SvUPGRADE(sv, SVt_PV);
3065 (void)SvOOK_off(sv);
3066 if (SvPVX(sv) && SvLEN(sv))
3067 Safefree(SvPVX(sv));
3068 Renew(ptr, len+1, char);
3071 SvLEN_set(sv, len+1);
3073 (void)SvPOK_only(sv); /* validate pointer */
3078 =for apidoc sv_usepvn_mg
3080 Like C<sv_usepvn>, but also handles 'set' magic.
3086 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3088 sv_usepvn(sv,ptr,len);
3093 Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags)
3095 if (SvREADONLY(sv)) {
3097 char *pvx = SvPVX(sv);
3098 STRLEN len = SvCUR(sv);
3099 U32 hash = SvUVX(sv);
3100 SvGROW(sv, len + 1);
3101 Move(pvx,SvPVX(sv),len,char);
3105 unsharepvn(pvx,SvUTF8(sv)?-len:len,hash);
3107 else if (PL_curcop != &PL_compiling)
3108 Perl_croak(aTHX_ PL_no_modify);
3111 sv_unref_flags(sv, flags);
3112 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3117 Perl_sv_force_normal(pTHX_ register SV *sv)
3119 sv_force_normal_flags(sv, 0);
3125 Efficient removal of characters from the beginning of the string buffer.
3126 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3127 the string buffer. The C<ptr> becomes the first character of the adjusted
3134 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3138 register STRLEN delta;
3140 if (!ptr || !SvPOKp(sv))
3142 SV_CHECK_THINKFIRST(sv);
3143 if (SvTYPE(sv) < SVt_PVIV)
3144 sv_upgrade(sv,SVt_PVIV);
3147 if (!SvLEN(sv)) { /* make copy of shared string */
3148 char *pvx = SvPVX(sv);
3149 STRLEN len = SvCUR(sv);
3150 SvGROW(sv, len + 1);
3151 Move(pvx,SvPVX(sv),len,char);
3155 SvFLAGS(sv) |= SVf_OOK;
3157 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3158 delta = ptr - SvPVX(sv);
3166 =for apidoc sv_catpvn
3168 Concatenates the string onto the end of the string which is in the SV. The
3169 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3170 'set' magic. See C<sv_catpvn_mg>.
3176 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3181 junk = SvPV_force(sv, tlen);
3182 SvGROW(sv, tlen + len + 1);
3185 Move(ptr,SvPVX(sv)+tlen,len,char);
3188 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3193 =for apidoc sv_catpvn_mg
3195 Like C<sv_catpvn>, but also handles 'set' magic.
3201 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3203 sv_catpvn(sv,ptr,len);
3208 =for apidoc sv_catsv
3210 Concatenates the string from SV C<ssv> onto the end of the string in SV
3211 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3217 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3223 if ((s = SvPV(sstr, len))) {
3224 if (DO_UTF8(sstr)) {
3225 sv_utf8_upgrade(dstr);
3226 sv_catpvn(dstr,s,len);
3230 sv_catpvn(dstr,s,len);
3235 =for apidoc sv_catsv_mg
3237 Like C<sv_catsv>, but also handles 'set' magic.
3243 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3245 sv_catsv(dstr,sstr);
3250 =for apidoc sv_catpv
3252 Concatenates the string onto the end of the string which is in the SV.
3253 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3259 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3261 register STRLEN len;
3267 junk = SvPV_force(sv, tlen);
3269 SvGROW(sv, tlen + len + 1);
3272 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3274 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3279 =for apidoc sv_catpv_mg
3281 Like C<sv_catpv>, but also handles 'set' magic.
3287 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3294 Perl_newSV(pTHX_ STRLEN len)
3300 sv_upgrade(sv, SVt_PV);
3301 SvGROW(sv, len + 1);
3306 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3309 =for apidoc sv_magic
3311 Adds magic to an SV.
3317 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3321 if (SvREADONLY(sv)) {
3322 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3323 Perl_croak(aTHX_ PL_no_modify);
3325 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3326 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3333 (void)SvUPGRADE(sv, SVt_PVMG);
3335 Newz(702,mg, 1, MAGIC);
3336 mg->mg_moremagic = SvMAGIC(sv);
3339 if (!obj || obj == sv || how == '#' || how == 'r')
3342 mg->mg_obj = SvREFCNT_inc(obj);
3343 mg->mg_flags |= MGf_REFCOUNTED;
3346 mg->mg_len = namlen;
3349 mg->mg_ptr = savepvn(name, namlen);
3350 else if (namlen == HEf_SVKEY)
3351 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3355 mg->mg_virtual = &PL_vtbl_sv;
3358 mg->mg_virtual = &PL_vtbl_amagic;
3361 mg->mg_virtual = &PL_vtbl_amagicelem;
3367 mg->mg_virtual = &PL_vtbl_bm;
3370 mg->mg_virtual = &PL_vtbl_regdata;
3373 mg->mg_virtual = &PL_vtbl_regdatum;
3376 mg->mg_virtual = &PL_vtbl_env;
3379 mg->mg_virtual = &PL_vtbl_fm;
3382 mg->mg_virtual = &PL_vtbl_envelem;
3385 mg->mg_virtual = &PL_vtbl_mglob;
3388 mg->mg_virtual = &PL_vtbl_isa;
3391 mg->mg_virtual = &PL_vtbl_isaelem;
3394 mg->mg_virtual = &PL_vtbl_nkeys;
3401 mg->mg_virtual = &PL_vtbl_dbline;
3405 mg->mg_virtual = &PL_vtbl_mutex;
3407 #endif /* USE_THREADS */
3408 #ifdef USE_LOCALE_COLLATE
3410 mg->mg_virtual = &PL_vtbl_collxfrm;
3412 #endif /* USE_LOCALE_COLLATE */
3414 mg->mg_virtual = &PL_vtbl_pack;
3418 mg->mg_virtual = &PL_vtbl_packelem;
3421 mg->mg_virtual = &PL_vtbl_regexp;
3424 mg->mg_virtual = &PL_vtbl_sig;
3427 mg->mg_virtual = &PL_vtbl_sigelem;
3430 mg->mg_virtual = &PL_vtbl_taint;
3434 mg->mg_virtual = &PL_vtbl_uvar;
3437 mg->mg_virtual = &PL_vtbl_vec;
3440 mg->mg_virtual = &PL_vtbl_substr;
3443 mg->mg_virtual = &PL_vtbl_defelem;
3446 mg->mg_virtual = &PL_vtbl_glob;
3449 mg->mg_virtual = &PL_vtbl_arylen;
3452 mg->mg_virtual = &PL_vtbl_pos;
3455 mg->mg_virtual = &PL_vtbl_backref;
3457 case '~': /* Reserved for use by extensions not perl internals. */
3458 /* Useful for attaching extension internal data to perl vars. */
3459 /* Note that multiple extensions may clash if magical scalars */
3460 /* etc holding private data from one are passed to another. */
3464 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3468 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3472 =for apidoc sv_unmagic
3474 Removes magic from an SV.
3480 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3484 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3487 for (mg = *mgp; mg; mg = *mgp) {
3488 if (mg->mg_type == type) {
3489 MGVTBL* vtbl = mg->mg_virtual;
3490 *mgp = mg->mg_moremagic;
3491 if (vtbl && vtbl->svt_free)
3492 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3493 if (mg->mg_ptr && mg->mg_type != 'g')
3494 if (mg->mg_len >= 0)
3495 Safefree(mg->mg_ptr);
3496 else if (mg->mg_len == HEf_SVKEY)
3497 SvREFCNT_dec((SV*)mg->mg_ptr);
3498 if (mg->mg_flags & MGf_REFCOUNTED)
3499 SvREFCNT_dec(mg->mg_obj);
3503 mgp = &mg->mg_moremagic;
3507 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3514 =for apidoc sv_rvweaken
3522 Perl_sv_rvweaken(pTHX_ SV *sv)
3525 if (!SvOK(sv)) /* let undefs pass */
3528 Perl_croak(aTHX_ "Can't weaken a nonreference");
3529 else if (SvWEAKREF(sv)) {
3530 if (ckWARN(WARN_MISC))
3531 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3535 sv_add_backref(tsv, sv);
3542 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3546 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3547 av = (AV*)mg->mg_obj;
3550 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3551 SvREFCNT_dec(av); /* for sv_magic */
3557 S_sv_del_backref(pTHX_ SV *sv)
3564 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3565 Perl_croak(aTHX_ "panic: del_backref");
3566 av = (AV *)mg->mg_obj;
3571 svp[i] = &PL_sv_undef; /* XXX */
3578 =for apidoc sv_insert
3580 Inserts a string at the specified offset/length within the SV. Similar to
3581 the Perl substr() function.
3587 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3591 register char *midend;
3592 register char *bigend;
3598 Perl_croak(aTHX_ "Can't modify non-existent substring");
3599 SvPV_force(bigstr, curlen);
3600 (void)SvPOK_only_UTF8(bigstr);
3601 if (offset + len > curlen) {
3602 SvGROW(bigstr, offset+len+1);
3603 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3604 SvCUR_set(bigstr, offset+len);
3608 i = littlelen - len;
3609 if (i > 0) { /* string might grow */
3610 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3611 mid = big + offset + len;
3612 midend = bigend = big + SvCUR(bigstr);
3615 while (midend > mid) /* shove everything down */
3616 *--bigend = *--midend;
3617 Move(little,big+offset,littlelen,char);
3623 Move(little,SvPVX(bigstr)+offset,len,char);
3628 big = SvPVX(bigstr);
3631 bigend = big + SvCUR(bigstr);
3633 if (midend > bigend)
3634 Perl_croak(aTHX_ "panic: sv_insert");
3636 if (mid - big > bigend - midend) { /* faster to shorten from end */
3638 Move(little, mid, littlelen,char);
3641 i = bigend - midend;
3643 Move(midend, mid, i,char);
3647 SvCUR_set(bigstr, mid - big);
3650 else if ((i = mid - big)) { /* faster from front */
3651 midend -= littlelen;
3653 sv_chop(bigstr,midend-i);
3658 Move(little, mid, littlelen,char);
3660 else if (littlelen) {
3661 midend -= littlelen;
3662 sv_chop(bigstr,midend);
3663 Move(little,midend,littlelen,char);
3666 sv_chop(bigstr,midend);
3672 =for apidoc sv_replace
3674 Make the first argument a copy of the second, then delete the original.
3680 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3682 U32 refcnt = SvREFCNT(sv);
3683 SV_CHECK_THINKFIRST(sv);
3684 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3685 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3686 if (SvMAGICAL(sv)) {
3690 sv_upgrade(nsv, SVt_PVMG);
3691 SvMAGIC(nsv) = SvMAGIC(sv);
3692 SvFLAGS(nsv) |= SvMAGICAL(sv);
3698 assert(!SvREFCNT(sv));
3699 StructCopy(nsv,sv,SV);
3700 SvREFCNT(sv) = refcnt;
3701 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3706 =for apidoc sv_clear
3708 Clear an SV, making it empty. Does not free the memory used by the SV
3715 Perl_sv_clear(pTHX_ register SV *sv)
3719 assert(SvREFCNT(sv) == 0);
3722 if (PL_defstash) { /* Still have a symbol table? */
3727 Zero(&tmpref, 1, SV);
3728 sv_upgrade(&tmpref, SVt_RV);
3730 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3731 SvREFCNT(&tmpref) = 1;
3734 stash = SvSTASH(sv);
3735 destructor = StashHANDLER(stash,DESTROY);
3738 PUSHSTACKi(PERLSI_DESTROY);
3739 SvRV(&tmpref) = SvREFCNT_inc(sv);
3744 call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
3750 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3752 del_XRV(SvANY(&tmpref));
3755 if (PL_in_clean_objs)
3756 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3758 /* DESTROY gave object new lease on life */
3764 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3765 SvOBJECT_off(sv); /* Curse the object. */
3766 if (SvTYPE(sv) != SVt_PVIO)
3767 --PL_sv_objcount; /* XXX Might want something more general */
3770 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3773 switch (SvTYPE(sv)) {
3776 IoIFP(sv) != PerlIO_stdin() &&
3777 IoIFP(sv) != PerlIO_stdout() &&
3778 IoIFP(sv) != PerlIO_stderr())
3780 io_close((IO*)sv, FALSE);
3782 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3783 PerlDir_close(IoDIRP(sv));
3784 IoDIRP(sv) = (DIR*)NULL;
3785 Safefree(IoTOP_NAME(sv));
3786 Safefree(IoFMT_NAME(sv));
3787 Safefree(IoBOTTOM_NAME(sv));
3802 SvREFCNT_dec(LvTARG(sv));
3806 Safefree(GvNAME(sv));
3807 /* cannot decrease stash refcount yet, as we might recursively delete
3808 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3809 of stash until current sv is completely gone.
3810 -- JohnPC, 27 Mar 1998 */
3811 stash = GvSTASH(sv);
3817 (void)SvOOK_off(sv);
3825 SvREFCNT_dec(SvRV(sv));
3827 else if (SvPVX(sv) && SvLEN(sv))
3828 Safefree(SvPVX(sv));
3829 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3830 unsharepvn(SvPVX(sv),SvUTF8(sv)?-SvCUR(sv):SvCUR(sv),SvUVX(sv));
3842 switch (SvTYPE(sv)) {
3858 del_XPVIV(SvANY(sv));
3861 del_XPVNV(SvANY(sv));
3864 del_XPVMG(SvANY(sv));
3867 del_XPVLV(SvANY(sv));
3870 del_XPVAV(SvANY(sv));
3873 del_XPVHV(SvANY(sv));
3876 del_XPVCV(SvANY(sv));
3879 del_XPVGV(SvANY(sv));
3880 /* code duplication for increased performance. */
3881 SvFLAGS(sv) &= SVf_BREAK;
3882 SvFLAGS(sv) |= SVTYPEMASK;
3883 /* decrease refcount of the stash that owns this GV, if any */
3885 SvREFCNT_dec(stash);
3886 return; /* not break, SvFLAGS reset already happened */
3888 del_XPVBM(SvANY(sv));
3891 del_XPVFM(SvANY(sv));
3894 del_XPVIO(SvANY(sv));
3897 SvFLAGS(sv) &= SVf_BREAK;
3898 SvFLAGS(sv) |= SVTYPEMASK;
3902 Perl_sv_newref(pTHX_ SV *sv)
3905 ATOMIC_INC(SvREFCNT(sv));
3912 Free the memory used by an SV.
3918 Perl_sv_free(pTHX_ SV *sv)
3920 int refcount_is_zero;
3924 if (SvREFCNT(sv) == 0) {
3925 if (SvFLAGS(sv) & SVf_BREAK)
3927 if (PL_in_clean_all) /* All is fair */
3929 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3930 /* make sure SvREFCNT(sv)==0 happens very seldom */
3931 SvREFCNT(sv) = (~(U32)0)/2;
3934 if (ckWARN_d(WARN_INTERNAL))
3935 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3938 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3939 if (!refcount_is_zero)
3943 if (ckWARN_d(WARN_DEBUGGING))
3944 Perl_warner(aTHX_ WARN_DEBUGGING,
3945 "Attempt to free temp prematurely: SV 0x%"UVxf,
3950 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3951 /* make sure SvREFCNT(sv)==0 happens very seldom */
3952 SvREFCNT(sv) = (~(U32)0)/2;
3963 Returns the length of the string in the SV. See also C<SvCUR>.
3969 Perl_sv_len(pTHX_ register SV *sv)
3978 len = mg_length(sv);
3980 junk = SvPV(sv, len);
3985 =for apidoc sv_len_utf8
3987 Returns the number of characters in the string in an SV, counting wide
3988 UTF8 bytes as a single character.
3994 Perl_sv_len_utf8(pTHX_ register SV *sv)
4001 return mg_length(sv);
4006 U8 *s = (U8*)SvPV(sv, len);
4008 return Perl_utf8_length(aTHX_ s, s + len);
4013 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4018 I32 uoffset = *offsetp;
4024 start = s = (U8*)SvPV(sv, len);
4026 while (s < send && uoffset--)
4030 *offsetp = s - start;
4034 while (s < send && ulen--)
4044 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4053 s = (U8*)SvPV(sv, len);
4055 Perl_croak(aTHX_ "panic: bad byte offset");
4056 send = s + *offsetp;
4063 if (ckWARN_d(WARN_UTF8))
4064 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4074 Returns a boolean indicating whether the strings in the two SVs are
4081 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4088 bool pv1tmp = FALSE;
4089 bool pv2tmp = FALSE;
4096 pv1 = SvPV(sv1, cur1);
4103 pv2 = SvPV(sv2, cur2);
4105 /* do not utf8ize the comparands as a side-effect */
4106 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4108 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4112 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4118 eq = memEQ(pv1, pv2, cur1);
4131 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4132 string in C<sv1> is less than, equal to, or greater than the string in
4139 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4144 bool pv1tmp = FALSE;
4145 bool pv2tmp = FALSE;
4152 pv1 = SvPV(sv1, cur1);
4159 pv2 = SvPV(sv2, cur2);
4161 /* do not utf8ize the comparands as a side-effect */
4162 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4164 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4168 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4174 cmp = cur2 ? -1 : 0;
4178 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4181 cmp = retval < 0 ? -1 : 1;
4182 } else if (cur1 == cur2) {
4185 cmp = cur1 < cur2 ? -1 : 1;
4198 =for apidoc sv_cmp_locale
4200 Compares the strings in two SVs in a locale-aware manner. See
4207 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4209 #ifdef USE_LOCALE_COLLATE
4215 if (PL_collation_standard)
4219 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4221 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4223 if (!pv1 || !len1) {
4234 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4237 return retval < 0 ? -1 : 1;
4240 * When the result of collation is equality, that doesn't mean
4241 * that there are no differences -- some locales exclude some
4242 * characters from consideration. So to avoid false equalities,
4243 * we use the raw string as a tiebreaker.
4249 #endif /* USE_LOCALE_COLLATE */
4251 return sv_cmp(sv1, sv2);
4254 #ifdef USE_LOCALE_COLLATE
4256 * Any scalar variable may carry an 'o' magic that contains the
4257 * scalar data of the variable transformed to such a format that
4258 * a normal memory comparison can be used to compare the data
4259 * according to the locale settings.
4262 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4266 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4267 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4272 Safefree(mg->mg_ptr);
4274 if ((xf = mem_collxfrm(s, len, &xlen))) {
4275 if (SvREADONLY(sv)) {
4278 return xf + sizeof(PL_collation_ix);
4281 sv_magic(sv, 0, 'o', 0, 0);
4282 mg = mg_find(sv, 'o');
4295 if (mg && mg->mg_ptr) {
4297 return mg->mg_ptr + sizeof(PL_collation_ix);
4305 #endif /* USE_LOCALE_COLLATE */
4310 Get a line from the filehandle and store it into the SV, optionally
4311 appending to the currently-stored string.
4317 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4321 register STDCHAR rslast;
4322 register STDCHAR *bp;
4326 SV_CHECK_THINKFIRST(sv);
4327 (void)SvUPGRADE(sv, SVt_PV);
4331 if (RsSNARF(PL_rs)) {
4335 else if (RsRECORD(PL_rs)) {
4336 I32 recsize, bytesread;
4339 /* Grab the size of the record we're getting */
4340 recsize = SvIV(SvRV(PL_rs));
4341 (void)SvPOK_only(sv); /* Validate pointer */
4342 buffer = SvGROW(sv, recsize + 1);
4345 /* VMS wants read instead of fread, because fread doesn't respect */
4346 /* RMS record boundaries. This is not necessarily a good thing to be */
4347 /* doing, but we've got no other real choice */
4348 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4350 bytesread = PerlIO_read(fp, buffer, recsize);
4352 SvCUR_set(sv, bytesread);
4353 buffer[bytesread] = '\0';
4354 if (PerlIO_isutf8(fp))
4358 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4360 else if (RsPARA(PL_rs)) {
4365 /* Get $/ i.e. PL_rs into same encoding as stream wants */
4366 if (PerlIO_isutf8(fp)) {
4367 rsptr = SvPVutf8(PL_rs, rslen);
4370 if (SvUTF8(PL_rs)) {
4371 if (!sv_utf8_downgrade(PL_rs, TRUE)) {
4372 Perl_croak(aTHX_ "Wide character in $/");
4375 rsptr = SvPV(PL_rs, rslen);
4379 rslast = rslen ? rsptr[rslen - 1] : '\0';
4381 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4382 do { /* to make sure file boundaries work right */
4385 i = PerlIO_getc(fp);
4389 PerlIO_ungetc(fp,i);
4395 /* See if we know enough about I/O mechanism to cheat it ! */
4397 /* This used to be #ifdef test - it is made run-time test for ease
4398 of abstracting out stdio interface. One call should be cheap
4399 enough here - and may even be a macro allowing compile
4403 if (PerlIO_fast_gets(fp)) {
4406 * We're going to steal some values from the stdio struct
4407 * and put EVERYTHING in the innermost loop into registers.
4409 register STDCHAR *ptr;
4413 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4414 /* An ungetc()d char is handled separately from the regular
4415 * buffer, so we getc() it back out and stuff it in the buffer.
4417 i = PerlIO_getc(fp);
4418 if (i == EOF) return 0;
4419 *(--((*fp)->_ptr)) = (unsigned char) i;
4423 /* Here is some breathtakingly efficient cheating */
4425 cnt = PerlIO_get_cnt(fp); /* get count into register */
4426 (void)SvPOK_only(sv); /* validate pointer */
4427 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4428 if (cnt > 80 && SvLEN(sv) > append) {
4429 shortbuffered = cnt - SvLEN(sv) + append + 1;
4430 cnt -= shortbuffered;
4434 /* remember that cnt can be negative */
4435 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4440 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4441 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4442 DEBUG_P(PerlIO_printf(Perl_debug_log,
4443 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4444 DEBUG_P(PerlIO_printf(Perl_debug_log,
4445 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4446 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4447 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4452 while (cnt > 0) { /* this | eat */
4454 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4455 goto thats_all_folks; /* screams | sed :-) */
4459 Copy(ptr, bp, cnt, char); /* this | eat */
4460 bp += cnt; /* screams | dust */
4461 ptr += cnt; /* louder | sed :-) */
4466 if (shortbuffered) { /* oh well, must extend */
4467 cnt = shortbuffered;
4469 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4471 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4472 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4476 DEBUG_P(PerlIO_printf(Perl_debug_log,
4477 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4478 PTR2UV(ptr),(long)cnt));
4479 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4480 DEBUG_P(PerlIO_printf(Perl_debug_log,
4481 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4482 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4483 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4484 /* This used to call 'filbuf' in stdio form, but as that behaves like
4485 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4486 another abstraction. */
4487 i = PerlIO_getc(fp); /* get more characters */
4488 DEBUG_P(PerlIO_printf(Perl_debug_log,
4489 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4490 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4491 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4492 cnt = PerlIO_get_cnt(fp);
4493 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4494 DEBUG_P(PerlIO_printf(Perl_debug_log,
4495 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4497 if (i == EOF) /* all done for ever? */
4498 goto thats_really_all_folks;
4500 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4502 SvGROW(sv, bpx + cnt + 2);
4503 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4505 *bp++ = i; /* store character from PerlIO_getc */
4507 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4508 goto thats_all_folks;
4512 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4513 memNE((char*)bp - rslen, rsptr, rslen))
4514 goto screamer; /* go back to the fray */
4515 thats_really_all_folks:
4517 cnt += shortbuffered;
4518 DEBUG_P(PerlIO_printf(Perl_debug_log,
4519 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4520 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4521 DEBUG_P(PerlIO_printf(Perl_debug_log,
4522 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4523 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4524 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4526 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4527 DEBUG_P(PerlIO_printf(Perl_debug_log,
4528 "Screamer: done, len=%ld, string=|%.*s|\n",
4529 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4534 /*The big, slow, and stupid way */
4537 /* Need to work around EPOC SDK features */
4538 /* On WINS: MS VC5 generates calls to _chkstk, */
4539 /* if a `large' stack frame is allocated */
4540 /* gcc on MARM does not generate calls like these */
4546 register STDCHAR *bpe = buf + sizeof(buf);
4548 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4549 ; /* keep reading */
4553 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4554 /* Accomodate broken VAXC compiler, which applies U8 cast to
4555 * both args of ?: operator, causing EOF to change into 255
4557 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4561 sv_catpvn(sv, (char *) buf, cnt);
4563 sv_setpvn(sv, (char *) buf, cnt);
4565 if (i != EOF && /* joy */
4567 SvCUR(sv) < rslen ||
4568 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4572 * If we're reading from a TTY and we get a short read,
4573 * indicating that the user hit his EOF character, we need
4574 * to notice it now, because if we try to read from the TTY
4575 * again, the EOF condition will disappear.
4577 * The comparison of cnt to sizeof(buf) is an optimization
4578 * that prevents unnecessary calls to feof().
4582 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4587 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4588 while (i != EOF) { /* to make sure file boundaries work right */
4589 i = PerlIO_getc(fp);
4591 PerlIO_ungetc(fp,i);
4597 if (PerlIO_isutf8(fp))
4602 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4609 Auto-increment of the value in the SV.
4615 Perl_sv_inc(pTHX_ register SV *sv)
4624 if (SvTHINKFIRST(sv)) {
4625 if (SvREADONLY(sv)) {
4626 if (PL_curcop != &PL_compiling)
4627 Perl_croak(aTHX_ PL_no_modify);
4631 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4633 i = PTR2IV(SvRV(sv));
4638 flags = SvFLAGS(sv);
4639 if (flags & SVp_NOK) {
4640 (void)SvNOK_only(sv);
4644 if (flags & SVp_IOK) {
4646 if (SvUVX(sv) == UV_MAX)
4647 sv_setnv(sv, (NV)UV_MAX + 1.0);
4649 (void)SvIOK_only_UV(sv);
4652 if (SvIVX(sv) == IV_MAX)
4653 sv_setnv(sv, (NV)IV_MAX + 1.0);
4655 (void)SvIOK_only(sv);
4661 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4662 if ((flags & SVTYPEMASK) < SVt_PVNV)
4663 sv_upgrade(sv, SVt_IV);
4664 (void)SvIOK_only(sv);
4669 while (isALPHA(*d)) d++;
4670 while (isDIGIT(*d)) d++;
4672 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4676 while (d >= SvPVX(sv)) {
4684 /* MKS: The original code here died if letters weren't consecutive.
4685 * at least it didn't have to worry about non-C locales. The
4686 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4687 * arranged in order (although not consecutively) and that only
4688 * [A-Za-z] are accepted by isALPHA in the C locale.
4690 if (*d != 'z' && *d != 'Z') {
4691 do { ++*d; } while (!isALPHA(*d));
4694 *(d--) -= 'z' - 'a';
4699 *(d--) -= 'z' - 'a' + 1;
4703 /* oh,oh, the number grew */
4704 SvGROW(sv, SvCUR(sv) + 2);
4706 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4717 Auto-decrement of the value in the SV.
4723 Perl_sv_dec(pTHX_ register SV *sv)
4731 if (SvTHINKFIRST(sv)) {
4732 if (SvREADONLY(sv)) {
4733 if (PL_curcop != &PL_compiling)
4734 Perl_croak(aTHX_ PL_no_modify);
4738 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4740 i = PTR2IV(SvRV(sv));
4745 flags = SvFLAGS(sv);
4746 if (flags & SVp_NOK) {
4748 (void)SvNOK_only(sv);
4751 if (flags & SVp_IOK) {
4753 if (SvUVX(sv) == 0) {
4754 (void)SvIOK_only(sv);
4758 (void)SvIOK_only_UV(sv);
4762 if (SvIVX(sv) == IV_MIN)
4763 sv_setnv(sv, (NV)IV_MIN - 1.0);
4765 (void)SvIOK_only(sv);
4771 if (!(flags & SVp_POK)) {
4772 if ((flags & SVTYPEMASK) < SVt_PVNV)
4773 sv_upgrade(sv, SVt_NV);
4775 (void)SvNOK_only(sv);
4778 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4782 =for apidoc sv_mortalcopy
4784 Creates a new SV which is a copy of the original SV. The new SV is marked
4790 /* Make a string that will exist for the duration of the expression
4791 * evaluation. Actually, it may have to last longer than that, but
4792 * hopefully we won't free it until it has been assigned to a
4793 * permanent location. */
4796 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4801 sv_setsv(sv,oldstr);
4803 PL_tmps_stack[++PL_tmps_ix] = sv;
4809 =for apidoc sv_newmortal
4811 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4817 Perl_sv_newmortal(pTHX)
4822 SvFLAGS(sv) = SVs_TEMP;
4824 PL_tmps_stack[++PL_tmps_ix] = sv;
4829 =for apidoc sv_2mortal
4831 Marks an SV as mortal. The SV will be destroyed when the current context
4837 /* same thing without the copying */
4840 Perl_sv_2mortal(pTHX_ register SV *sv)
4844 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4847 PL_tmps_stack[++PL_tmps_ix] = sv;
4855 Creates a new SV and copies a string into it. The reference count for the
4856 SV is set to 1. If C<len> is zero, Perl will compute the length using
4857 strlen(). For efficiency, consider using C<newSVpvn> instead.
4863 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4870 sv_setpvn(sv,s,len);
4875 =for apidoc newSVpvn
4877 Creates a new SV and copies a string into it. The reference count for the
4878 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4879 string. You are responsible for ensuring that the source string is at least
4886 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4891 sv_setpvn(sv,s,len);
4896 =for apidoc newSVpvn_share
4898 Creates a new SV and populates it with a string from
4899 the string table. Turns on READONLY and FAKE.
4900 The idea here is that as string table is used for shared hash
4901 keys these strings will have SvPVX == HeKEY and hash lookup
4902 will avoid string compare.
4908 Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash)
4911 bool is_utf8 = FALSE;
4917 PERL_HASH(hash, src, len);
4919 sv_upgrade(sv, SVt_PVIV);
4920 SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash);
4932 #if defined(PERL_IMPLICIT_CONTEXT)
4934 Perl_newSVpvf_nocontext(const char* pat, ...)
4939 va_start(args, pat);
4940 sv = vnewSVpvf(pat, &args);
4947 =for apidoc newSVpvf
4949 Creates a new SV an initialize it with the string formatted like
4956 Perl_newSVpvf(pTHX_ const char* pat, ...)
4960 va_start(args, pat);
4961 sv = vnewSVpvf(pat, &args);
4967 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4971 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4978 Creates a new SV and copies a floating point value into it.
4979 The reference count for the SV is set to 1.
4985 Perl_newSVnv(pTHX_ NV n)
4997 Creates a new SV and copies an integer into it. The reference count for the
5004 Perl_newSViv(pTHX_ IV i)
5016 Creates a new SV and copies an unsigned integer into it.
5017 The reference count for the SV is set to 1.
5023 Perl_newSVuv(pTHX_ UV u)
5033 =for apidoc newRV_noinc
5035 Creates an RV wrapper for an SV. The reference count for the original
5036 SV is B<not> incremented.
5042 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5047 sv_upgrade(sv, SVt_RV);
5054 /* newRV_inc is #defined to newRV in sv.h */
5056 Perl_newRV(pTHX_ SV *tmpRef)
5058 return newRV_noinc(SvREFCNT_inc(tmpRef));
5064 Creates a new SV which is an exact duplicate of the original SV.
5069 /* make an exact duplicate of old */
5072 Perl_newSVsv(pTHX_ register SV *old)
5078 if (SvTYPE(old) == SVTYPEMASK) {
5079 if (ckWARN_d(WARN_INTERNAL))
5080 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5095 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5103 char todo[PERL_UCHAR_MAX+1];
5108 if (!*s) { /* reset ?? searches */
5109 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5110 pm->op_pmdynflags &= ~PMdf_USED;
5115 /* reset variables */
5117 if (!HvARRAY(stash))
5120 Zero(todo, 256, char);
5122 i = (unsigned char)*s;
5126 max = (unsigned char)*s++;
5127 for ( ; i <= max; i++) {
5130 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5131 for (entry = HvARRAY(stash)[i];
5133 entry = HeNEXT(entry))
5135 if (!todo[(U8)*HeKEY(entry)])
5137 gv = (GV*)HeVAL(entry);
5139 if (SvTHINKFIRST(sv)) {
5140 if (!SvREADONLY(sv) && SvROK(sv))
5145 if (SvTYPE(sv) >= SVt_PV) {
5147 if (SvPVX(sv) != Nullch)
5154 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5156 #ifdef USE_ENVIRON_ARRAY
5158 environ[0] = Nullch;
5167 Perl_sv_2io(pTHX_ SV *sv)
5173 switch (SvTYPE(sv)) {
5181 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5185 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5187 return sv_2io(SvRV(sv));
5188 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5194 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5201 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5208 return *gvp = Nullgv, Nullcv;
5209 switch (SvTYPE(sv)) {
5228 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5229 tryAMAGICunDEREF(to_cv);
5232 if (SvTYPE(sv) == SVt_PVCV) {
5241 Perl_croak(aTHX_ "Not a subroutine reference");
5246 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5252 if (lref && !GvCVu(gv)) {
5255 tmpsv = NEWSV(704,0);
5256 gv_efullname3(tmpsv, gv, Nullch);
5257 /* XXX this is probably not what they think they're getting.
5258 * It has the same effect as "sub name;", i.e. just a forward
5260 newSUB(start_subparse(FALSE, 0),
5261 newSVOP(OP_CONST, 0, tmpsv),
5266 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5275 Returns true if the SV has a true value by Perl's rules.
5281 Perl_sv_true(pTHX_ register SV *sv)
5287 if ((tXpv = (XPV*)SvANY(sv)) &&
5288 (tXpv->xpv_cur > 1 ||
5289 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5296 return SvIVX(sv) != 0;
5299 return SvNVX(sv) != 0.0;
5301 return sv_2bool(sv);
5307 Perl_sv_iv(pTHX_ register SV *sv)
5311 return (IV)SvUVX(sv);
5318 Perl_sv_uv(pTHX_ register SV *sv)
5323 return (UV)SvIVX(sv);
5329 Perl_sv_nv(pTHX_ register SV *sv)
5337 Perl_sv_pv(pTHX_ SV *sv)
5344 return sv_2pv(sv, &n_a);
5348 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5354 return sv_2pv(sv, lp);
5358 =for apidoc sv_pvn_force
5360 Get a sensible string out of the SV somehow.
5366 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5370 if (SvTHINKFIRST(sv) && !SvROK(sv))
5371 sv_force_normal(sv);
5377 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5378 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5379 PL_op_name[PL_op->op_type]);
5383 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5388 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5389 SvGROW(sv, len + 1);
5390 Move(s,SvPVX(sv),len,char);
5395 SvPOK_on(sv); /* validate pointer */
5397 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5398 PTR2UV(sv),SvPVX(sv)));
5405 Perl_sv_pvbyte(pTHX_ SV *sv)
5411 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5413 return sv_pvn(sv,lp);
5417 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5419 return sv_pvn_force(sv,lp);
5423 Perl_sv_pvutf8(pTHX_ SV *sv)
5425 sv_utf8_upgrade(sv);
5430 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5432 sv_utf8_upgrade(sv);
5433 return sv_pvn(sv,lp);
5437 =for apidoc sv_pvutf8n_force
5439 Get a sensible UTF8-encoded string out of the SV somehow. See
5446 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5448 sv_utf8_upgrade(sv);
5449 return sv_pvn_force(sv,lp);
5453 =for apidoc sv_reftype
5455 Returns a string describing what the SV is a reference to.
5461 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5463 if (ob && SvOBJECT(sv))
5464 return HvNAME(SvSTASH(sv));
5466 switch (SvTYPE(sv)) {
5480 case SVt_PVLV: return "LVALUE";
5481 case SVt_PVAV: return "ARRAY";
5482 case SVt_PVHV: return "HASH";
5483 case SVt_PVCV: return "CODE";
5484 case SVt_PVGV: return "GLOB";
5485 case SVt_PVFM: return "FORMAT";
5486 case SVt_PVIO: return "IO";
5487 default: return "UNKNOWN";
5493 =for apidoc sv_isobject
5495 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5496 object. If the SV is not an RV, or if the object is not blessed, then this
5503 Perl_sv_isobject(pTHX_ SV *sv)
5520 Returns a boolean indicating whether the SV is blessed into the specified
5521 class. This does not check for subtypes; use C<sv_derived_from> to verify
5522 an inheritance relationship.
5528 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5540 return strEQ(HvNAME(SvSTASH(sv)), name);
5546 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5547 it will be upgraded to one. If C<classname> is non-null then the new SV will
5548 be blessed in the specified package. The new SV is returned and its
5549 reference count is 1.
5555 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5561 SV_CHECK_THINKFIRST(rv);
5564 if (SvTYPE(rv) >= SVt_PVMG) {
5565 U32 refcnt = SvREFCNT(rv);
5569 SvREFCNT(rv) = refcnt;
5572 if (SvTYPE(rv) < SVt_RV)
5573 sv_upgrade(rv, SVt_RV);
5574 else if (SvTYPE(rv) > SVt_RV) {
5575 (void)SvOOK_off(rv);
5576 if (SvPVX(rv) && SvLEN(rv))
5577 Safefree(SvPVX(rv));
5587 HV* stash = gv_stashpv(classname, TRUE);
5588 (void)sv_bless(rv, stash);
5594 =for apidoc sv_setref_pv
5596 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5597 argument will be upgraded to an RV. That RV will be modified to point to
5598 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5599 into the SV. The C<classname> argument indicates the package for the
5600 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5601 will be returned and will have a reference count of 1.
5603 Do not use with other Perl types such as HV, AV, SV, CV, because those
5604 objects will become corrupted by the pointer copy process.
5606 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5612 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5615 sv_setsv(rv, &PL_sv_undef);
5619 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5624 =for apidoc sv_setref_iv
5626 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5627 argument will be upgraded to an RV. That RV will be modified to point to
5628 the new SV. The C<classname> argument indicates the package for the
5629 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5630 will be returned and will have a reference count of 1.
5636 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5638 sv_setiv(newSVrv(rv,classname), iv);
5643 =for apidoc sv_setref_nv
5645 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5646 argument will be upgraded to an RV. That RV will be modified to point to
5647 the new SV. The C<classname> argument indicates the package for the
5648 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5649 will be returned and will have a reference count of 1.
5655 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5657 sv_setnv(newSVrv(rv,classname), nv);
5662 =for apidoc sv_setref_pvn
5664 Copies a string into a new SV, optionally blessing the SV. The length of the
5665 string must be specified with C<n>. The C<rv> argument will be upgraded to
5666 an RV. That RV will be modified to point to the new SV. The C<classname>
5667 argument indicates the package for the blessing. Set C<classname> to
5668 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5669 a reference count of 1.
5671 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5677 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5679 sv_setpvn(newSVrv(rv,classname), pv, n);
5684 =for apidoc sv_bless
5686 Blesses an SV into a specified package. The SV must be an RV. The package
5687 must be designated by its stash (see C<gv_stashpv()>). The reference count
5688 of the SV is unaffected.
5694 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5698 Perl_croak(aTHX_ "Can't bless non-reference value");
5700 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5701 if (SvREADONLY(tmpRef))
5702 Perl_croak(aTHX_ PL_no_modify);
5703 if (SvOBJECT(tmpRef)) {
5704 if (SvTYPE(tmpRef) != SVt_PVIO)
5706 SvREFCNT_dec(SvSTASH(tmpRef));
5709 SvOBJECT_on(tmpRef);
5710 if (SvTYPE(tmpRef) != SVt_PVIO)
5712 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5713 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5724 S_sv_unglob(pTHX_ SV *sv)
5728 assert(SvTYPE(sv) == SVt_PVGV);
5733 SvREFCNT_dec(GvSTASH(sv));
5734 GvSTASH(sv) = Nullhv;
5736 sv_unmagic(sv, '*');
5737 Safefree(GvNAME(sv));
5740 /* need to keep SvANY(sv) in the right arena */
5741 xpvmg = new_XPVMG();
5742 StructCopy(SvANY(sv), xpvmg, XPVMG);
5743 del_XPVGV(SvANY(sv));
5746 SvFLAGS(sv) &= ~SVTYPEMASK;
5747 SvFLAGS(sv) |= SVt_PVMG;
5751 =for apidoc sv_unref_flags
5753 Unsets the RV status of the SV, and decrements the reference count of
5754 whatever was being referenced by the RV. This can almost be thought of
5755 as a reversal of C<newSVrv>. The C<cflags> argument can contain
5756 C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented
5757 (otherwise the decrementing is conditional on the reference count being
5758 different from one or the reference being a readonly SV).
5765 Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags)
5769 if (SvWEAKREF(sv)) {
5777 if (SvREFCNT(rv) != 1 || SvREADONLY(rv) || flags) /* SV_IMMEDIATE_UNREF */
5779 else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */
5780 sv_2mortal(rv); /* Schedule for freeing later */
5784 =for apidoc sv_unref
5786 Unsets the RV status of the SV, and decrements the reference count of
5787 whatever was being referenced by the RV. This can almost be thought of
5788 as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
5789 being zero. See C<SvROK_off>.
5795 Perl_sv_unref(pTHX_ SV *sv)
5797 sv_unref_flags(sv, 0);
5801 Perl_sv_taint(pTHX_ SV *sv)
5803 sv_magic((sv), Nullsv, 't', Nullch, 0);
5807 Perl_sv_untaint(pTHX_ SV *sv)
5809 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5810 MAGIC *mg = mg_find(sv, 't');
5817 Perl_sv_tainted(pTHX_ SV *sv)
5819 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5820 MAGIC *mg = mg_find(sv, 't');
5821 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5828 =for apidoc sv_setpviv
5830 Copies an integer into the given SV, also updating its string value.
5831 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5837 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5839 char buf[TYPE_CHARS(UV)];
5841 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5843 sv_setpvn(sv, ptr, ebuf - ptr);
5848 =for apidoc sv_setpviv_mg
5850 Like C<sv_setpviv>, but also handles 'set' magic.
5856 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5858 char buf[TYPE_CHARS(UV)];
5860 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5862 sv_setpvn(sv, ptr, ebuf - ptr);
5866 #if defined(PERL_IMPLICIT_CONTEXT)
5868 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5872 va_start(args, pat);
5873 sv_vsetpvf(sv, pat, &args);
5879 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5883 va_start(args, pat);
5884 sv_vsetpvf_mg(sv, pat, &args);
5890 =for apidoc sv_setpvf
5892 Processes its arguments like C<sprintf> and sets an SV to the formatted
5893 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5899 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5902 va_start(args, pat);
5903 sv_vsetpvf(sv, pat, &args);
5908 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5910 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5914 =for apidoc sv_setpvf_mg
5916 Like C<sv_setpvf>, but also handles 'set' magic.
5922 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5925 va_start(args, pat);
5926 sv_vsetpvf_mg(sv, pat, &args);
5931 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5933 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5937 #if defined(PERL_IMPLICIT_CONTEXT)
5939 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5943 va_start(args, pat);
5944 sv_vcatpvf(sv, pat, &args);
5949 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5953 va_start(args, pat);
5954 sv_vcatpvf_mg(sv, pat, &args);
5960 =for apidoc sv_catpvf
5962 Processes its arguments like C<sprintf> and appends the formatted output
5963 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5964 typically be called after calling this function to handle 'set' magic.
5970 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5973 va_start(args, pat);
5974 sv_vcatpvf(sv, pat, &args);
5979 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5981 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5985 =for apidoc sv_catpvf_mg
5987 Like C<sv_catpvf>, but also handles 'set' magic.
5993 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5996 va_start(args, pat);
5997 sv_vcatpvf_mg(sv, pat, &args);
6002 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6004 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6009 =for apidoc sv_vsetpvfn
6011 Works like C<vcatpvfn> but copies the text into the SV instead of
6018 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6020 sv_setpvn(sv, "", 0);
6021 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
6025 =for apidoc sv_vcatpvfn
6027 Processes its arguments like C<vsprintf> and appends the formatted output
6028 to an SV. Uses an array of SVs if the C style variable argument list is
6029 missing (NULL). When running with taint checks enabled, indicates via
6030 C<maybe_tainted> if results are untrustworthy (often due to the use of
6037 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6044 static char nullstr[] = "(null)";
6047 /* no matter what, this is a string now */
6048 (void)SvPV_force(sv, origlen);
6050 /* special-case "", "%s", and "%_" */
6053 if (patlen == 2 && pat[0] == '%') {
6057 char *s = va_arg(*args, char*);
6058 sv_catpv(sv, s ? s : nullstr);
6060 else if (svix < svmax) {
6061 sv_catsv(sv, *svargs);
6062 if (DO_UTF8(*svargs))
6068 argsv = va_arg(*args, SV*);
6069 sv_catsv(sv, argsv);
6074 /* See comment on '_' below */
6079 patend = (char*)pat + patlen;
6080 for (p = (char*)pat; p < patend; p = q) {
6083 bool vectorize = FALSE;
6090 bool has_precis = FALSE;
6092 bool is_utf = FALSE;
6095 U8 utf8buf[UTF8_MAXLEN+1];
6096 STRLEN esignlen = 0;
6098 char *eptr = Nullch;
6100 /* Times 4: a decimal digit takes more than 3 binary digits.
6101 * NV_DIG: mantissa takes than many decimal digits.
6102 * Plus 32: Playing safe. */
6103 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6104 /* large enough for "%#.#f" --chip */
6105 /* what about long double NVs? --jhi */
6108 U8 *vecstr = Null(U8*);
6120 STRLEN dotstrlen = 1;
6121 I32 epix = 0; /* explicit parameter index */
6122 I32 ewix = 0; /* explicit width index */
6123 bool asterisk = FALSE;
6125 for (q = p; q < patend && *q != '%'; ++q) ;
6127 sv_catpvn(sv, p, q - p);
6156 case '*': /* printf("%*vX",":",$ipv6addr) */
6161 vecsv = va_arg(*args, SV*);
6162 else if (svix < svmax)
6163 vecsv = svargs[svix++];
6166 dotstr = SvPVx(vecsv,dotstrlen);
6194 case '1': case '2': case '3':
6195 case '4': case '5': case '6':
6196 case '7': case '8': case '9':
6199 width = width * 10 + (*q++ - '0');
6201 if (asterisk && ewix == 0) {
6206 } else if (epix == 0) {
6218 i = va_arg(*args, int);
6220 i = (ewix ? ewix <= svmax : svix < svmax) ?
6221 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6223 width = (i < 0) ? -i : i;
6232 i = va_arg(*args, int);
6234 i = (ewix ? ewix <= svmax : svix < svmax)
6235 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6236 precis = (i < 0) ? 0 : i;
6242 precis = precis * 10 + (*q++ - '0');
6249 vecsv = va_arg(*args, SV*);
6250 vecstr = (U8*)SvPVx(vecsv,veclen);
6251 utf = DO_UTF8(vecsv);
6253 else if (epix ? epix <= svmax : svix < svmax) {
6254 vecsv = svargs[epix ? epix-1 : svix++];
6255 vecstr = (U8*)SvPVx(vecsv,veclen);
6256 utf = DO_UTF8(vecsv);
6267 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6278 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6279 if (*(q + 1) == 'l') { /* lld, llf */
6306 uv = va_arg(*args, int);
6308 uv = (epix ? epix <= svmax : svix < svmax) ?
6309 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6310 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6311 eptr = (char*)utf8buf;
6312 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6324 eptr = va_arg(*args, char*);
6326 #ifdef MACOS_TRADITIONAL
6327 /* On MacOS, %#s format is used for Pascal strings */
6332 elen = strlen(eptr);
6335 elen = sizeof nullstr - 1;
6338 else if (epix ? epix <= svmax : svix < svmax) {
6339 argsv = svargs[epix ? epix-1 : svix++];
6340 eptr = SvPVx(argsv, elen);
6341 if (DO_UTF8(argsv)) {
6342 if (has_precis && precis < elen) {
6344 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6347 if (width) { /* fudge width (can't fudge elen) */
6348 width += elen - sv_len_utf8(argsv);
6357 * The "%_" hack might have to be changed someday,
6358 * if ISO or ANSI decide to use '_' for something.
6359 * So we keep it hidden from users' code.
6363 argsv = va_arg(*args,SV*);
6364 eptr = SvPVx(argsv, elen);
6370 if (has_precis && elen > precis)
6380 uv = PTR2UV(va_arg(*args, void*));
6382 uv = (epix ? epix <= svmax : svix < svmax) ?
6383 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6403 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6413 case 'h': iv = (short)va_arg(*args, int); break;
6414 default: iv = va_arg(*args, int); break;
6415 case 'l': iv = va_arg(*args, long); break;
6416 case 'V': iv = va_arg(*args, IV); break;
6418 case 'q': iv = va_arg(*args, Quad_t); break;
6423 iv = (epix ? epix <= svmax : svix < svmax) ?
6424 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6426 case 'h': iv = (short)iv; break;
6428 case 'l': iv = (long)iv; break;
6431 case 'q': iv = (Quad_t)iv; break;
6438 esignbuf[esignlen++] = plus;
6442 esignbuf[esignlen++] = '-';
6486 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6496 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6497 default: uv = va_arg(*args, unsigned); break;
6498 case 'l': uv = va_arg(*args, unsigned long); break;
6499 case 'V': uv = va_arg(*args, UV); break;
6501 case 'q': uv = va_arg(*args, Quad_t); break;
6506 uv = (epix ? epix <= svmax : svix < svmax) ?
6507 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6509 case 'h': uv = (unsigned short)uv; break;
6511 case 'l': uv = (unsigned long)uv; break;
6514 case 'q': uv = (Quad_t)uv; break;
6520 eptr = ebuf + sizeof ebuf;
6526 p = (char*)((c == 'X')
6527 ? "0123456789ABCDEF" : "0123456789abcdef");
6533 esignbuf[esignlen++] = '0';
6534 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6540 *--eptr = '0' + dig;
6542 if (alt && *eptr != '0')
6548 *--eptr = '0' + dig;
6551 esignbuf[esignlen++] = '0';
6552 esignbuf[esignlen++] = 'b';
6555 default: /* it had better be ten or less */
6556 #if defined(PERL_Y2KWARN)
6557 if (ckWARN(WARN_Y2K)) {
6559 char *s = SvPV(sv,n);
6560 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6561 && (n == 2 || !isDIGIT(s[n-3])))
6563 Perl_warner(aTHX_ WARN_Y2K,
6564 "Possible Y2K bug: %%%c %s",
6565 c, "format string following '19'");
6571 *--eptr = '0' + dig;
6572 } while (uv /= base);
6575 elen = (ebuf + sizeof ebuf) - eptr;
6578 zeros = precis - elen;
6579 else if (precis == 0 && elen == 1 && *eptr == '0')
6584 /* FLOATING POINT */
6587 c = 'f'; /* maybe %F isn't supported here */
6593 /* This is evil, but floating point is even more evil */
6597 nv = va_arg(*args, NV);
6599 nv = (epix ? epix <= svmax : svix < svmax) ?
6600 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6603 if (c != 'e' && c != 'E') {
6605 (void)Perl_frexp(nv, &i);
6606 if (i == PERL_INT_MIN)
6607 Perl_die(aTHX_ "panic: frexp");
6609 need = BIT_DIGITS(i);
6611 need += has_precis ? precis : 6; /* known default */
6615 need += 20; /* fudge factor */
6616 if (PL_efloatsize < need) {
6617 Safefree(PL_efloatbuf);
6618 PL_efloatsize = need + 20; /* more fudge */
6619 New(906, PL_efloatbuf, PL_efloatsize, char);
6620 PL_efloatbuf[0] = '\0';
6623 eptr = ebuf + sizeof ebuf;
6626 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6628 /* Copy the one or more characters in a long double
6629 * format before the 'base' ([efgEFG]) character to
6630 * the format string. */
6631 static char const prifldbl[] = PERL_PRIfldbl;
6632 char const *p = prifldbl + sizeof(prifldbl) - 3;
6633 while (p >= prifldbl) { *--eptr = *p--; }
6638 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6643 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6655 /* No taint. Otherwise we are in the strange situation
6656 * where printf() taints but print($float) doesn't.
6658 (void)sprintf(PL_efloatbuf, eptr, nv);
6660 eptr = PL_efloatbuf;
6661 elen = strlen(PL_efloatbuf);
6668 i = SvCUR(sv) - origlen;
6671 case 'h': *(va_arg(*args, short*)) = i; break;
6672 default: *(va_arg(*args, int*)) = i; break;
6673 case 'l': *(va_arg(*args, long*)) = i; break;
6674 case 'V': *(va_arg(*args, IV*)) = i; break;
6676 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6680 else if (epix ? epix <= svmax : svix < svmax)
6681 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6682 continue; /* not "break" */
6689 if (!args && ckWARN(WARN_PRINTF) &&
6690 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6691 SV *msg = sv_newmortal();
6692 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6693 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6696 Perl_sv_catpvf(aTHX_ msg,
6697 "\"%%%c\"", c & 0xFF);
6699 Perl_sv_catpvf(aTHX_ msg,
6700 "\"%%\\%03"UVof"\"",
6703 sv_catpv(msg, "end of string");
6704 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6707 /* output mangled stuff ... */
6713 /* ... right here, because formatting flags should not apply */
6714 SvGROW(sv, SvCUR(sv) + elen + 1);
6716 memcpy(p, eptr, elen);
6719 SvCUR(sv) = p - SvPVX(sv);
6720 continue; /* not "break" */
6723 have = esignlen + zeros + elen;
6724 need = (have > width ? have : width);
6727 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6729 if (esignlen && fill == '0') {
6730 for (i = 0; i < esignlen; i++)
6734 memset(p, fill, gap);
6737 if (esignlen && fill != '0') {
6738 for (i = 0; i < esignlen; i++)
6742 for (i = zeros; i; i--)
6746 memcpy(p, eptr, elen);
6750 memset(p, ' ', gap);
6755 memcpy(p, dotstr, dotstrlen);
6759 vectorize = FALSE; /* done iterating over vecstr */
6764 SvCUR(sv) = p - SvPVX(sv);
6772 #if defined(USE_ITHREADS)
6774 #if defined(USE_THREADS)
6775 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6778 #ifndef GpREFCNT_inc
6779 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6783 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6784 #define av_dup(s) (AV*)sv_dup((SV*)s)
6785 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6786 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6787 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6788 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6789 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6790 #define io_dup(s) (IO*)sv_dup((SV*)s)
6791 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6792 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6793 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6794 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6795 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6798 Perl_re_dup(pTHX_ REGEXP *r)
6800 /* XXX fix when pmop->op_pmregexp becomes shared */
6801 return ReREFCNT_inc(r);
6805 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6809 return (PerlIO*)NULL;
6811 /* look for it in the table first */
6812 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6816 /* create anew and remember what it is */
6817 ret = PerlIO_fdupopen(aTHX_ fp);
6818 ptr_table_store(PL_ptr_table, fp, ret);
6823 Perl_dirp_dup(pTHX_ DIR *dp)
6832 Perl_gp_dup(pTHX_ GP *gp)
6837 /* look for it in the table first */
6838 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6842 /* create anew and remember what it is */
6843 Newz(0, ret, 1, GP);
6844 ptr_table_store(PL_ptr_table, gp, ret);
6847 ret->gp_refcnt = 0; /* must be before any other dups! */
6848 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6849 ret->gp_io = io_dup_inc(gp->gp_io);
6850 ret->gp_form = cv_dup_inc(gp->gp_form);
6851 ret->gp_av = av_dup_inc(gp->gp_av);
6852 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6853 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6854 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6855 ret->gp_cvgen = gp->gp_cvgen;
6856 ret->gp_flags = gp->gp_flags;
6857 ret->gp_line = gp->gp_line;
6858 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6863 Perl_mg_dup(pTHX_ MAGIC *mg)
6865 MAGIC *mgret = (MAGIC*)NULL;
6868 return (MAGIC*)NULL;
6869 /* look for it in the table first */
6870 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6874 for (; mg; mg = mg->mg_moremagic) {
6876 Newz(0, nmg, 1, MAGIC);
6880 mgprev->mg_moremagic = nmg;
6881 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6882 nmg->mg_private = mg->mg_private;
6883 nmg->mg_type = mg->mg_type;
6884 nmg->mg_flags = mg->mg_flags;
6885 if (mg->mg_type == 'r') {
6886 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6889 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6890 ? sv_dup_inc(mg->mg_obj)
6891 : sv_dup(mg->mg_obj);
6893 nmg->mg_len = mg->mg_len;
6894 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6895 if (mg->mg_ptr && mg->mg_type != 'g') {
6896 if (mg->mg_len >= 0) {
6897 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6898 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6899 AMT *amtp = (AMT*)mg->mg_ptr;
6900 AMT *namtp = (AMT*)nmg->mg_ptr;
6902 for (i = 1; i < NofAMmeth; i++) {
6903 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6907 else if (mg->mg_len == HEf_SVKEY)
6908 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6916 Perl_ptr_table_new(pTHX)
6919 Newz(0, tbl, 1, PTR_TBL_t);
6922 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6927 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6929 PTR_TBL_ENT_t *tblent;
6930 UV hash = PTR2UV(sv);
6932 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6933 for (; tblent; tblent = tblent->next) {
6934 if (tblent->oldval == sv)
6935 return tblent->newval;
6941 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6943 PTR_TBL_ENT_t *tblent, **otblent;
6944 /* XXX this may be pessimal on platforms where pointers aren't good
6945 * hash values e.g. if they grow faster in the most significant
6947 UV hash = PTR2UV(oldv);
6951 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6952 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6953 if (tblent->oldval == oldv) {
6954 tblent->newval = newv;
6959 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6960 tblent->oldval = oldv;
6961 tblent->newval = newv;
6962 tblent->next = *otblent;
6965 if (i && tbl->tbl_items > tbl->tbl_max)
6966 ptr_table_split(tbl);
6970 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6972 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6973 UV oldsize = tbl->tbl_max + 1;
6974 UV newsize = oldsize * 2;
6977 Renew(ary, newsize, PTR_TBL_ENT_t*);
6978 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6979 tbl->tbl_max = --newsize;
6981 for (i=0; i < oldsize; i++, ary++) {
6982 PTR_TBL_ENT_t **curentp, **entp, *ent;
6985 curentp = ary + oldsize;
6986 for (entp = ary, ent = *ary; ent; ent = *entp) {
6987 if ((newsize & PTR2UV(ent->oldval)) != i) {
6989 ent->next = *curentp;
7004 Perl_sv_dup(pTHX_ SV *sstr)
7008 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
7010 /* look for it in the table first */
7011 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
7015 /* create anew and remember what it is */
7017 ptr_table_store(PL_ptr_table, sstr, dstr);
7020 SvFLAGS(dstr) = SvFLAGS(sstr);
7021 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
7022 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7025 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7026 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7027 PL_watch_pvx, SvPVX(sstr));
7030 switch (SvTYPE(sstr)) {
7035 SvANY(dstr) = new_XIV();
7036 SvIVX(dstr) = SvIVX(sstr);
7039 SvANY(dstr) = new_XNV();
7040 SvNVX(dstr) = SvNVX(sstr);
7043 SvANY(dstr) = new_XRV();
7044 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7047 SvANY(dstr) = new_XPV();
7048 SvCUR(dstr) = SvCUR(sstr);
7049 SvLEN(dstr) = SvLEN(sstr);
7051 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7052 else if (SvPVX(sstr) && SvLEN(sstr))
7053 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7055 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7058 SvANY(dstr) = new_XPVIV();
7059 SvCUR(dstr) = SvCUR(sstr);
7060 SvLEN(dstr) = SvLEN(sstr);
7061 SvIVX(dstr) = SvIVX(sstr);
7063 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7064 else if (SvPVX(sstr) && SvLEN(sstr))
7065 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7067 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7070 SvANY(dstr) = new_XPVNV();
7071 SvCUR(dstr) = SvCUR(sstr);
7072 SvLEN(dstr) = SvLEN(sstr);
7073 SvIVX(dstr) = SvIVX(sstr);
7074 SvNVX(dstr) = SvNVX(sstr);
7076 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7077 else if (SvPVX(sstr) && SvLEN(sstr))
7078 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7080 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7083 SvANY(dstr) = new_XPVMG();
7084 SvCUR(dstr) = SvCUR(sstr);
7085 SvLEN(dstr) = SvLEN(sstr);
7086 SvIVX(dstr) = SvIVX(sstr);
7087 SvNVX(dstr) = SvNVX(sstr);
7088 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7089 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7091 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7092 else if (SvPVX(sstr) && SvLEN(sstr))
7093 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7095 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7098 SvANY(dstr) = new_XPVBM();
7099 SvCUR(dstr) = SvCUR(sstr);
7100 SvLEN(dstr) = SvLEN(sstr);
7101 SvIVX(dstr) = SvIVX(sstr);
7102 SvNVX(dstr) = SvNVX(sstr);
7103 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7104 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7106 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7107 else if (SvPVX(sstr) && SvLEN(sstr))
7108 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7110 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7111 BmRARE(dstr) = BmRARE(sstr);
7112 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7113 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7116 SvANY(dstr) = new_XPVLV();
7117 SvCUR(dstr) = SvCUR(sstr);
7118 SvLEN(dstr) = SvLEN(sstr);
7119 SvIVX(dstr) = SvIVX(sstr);
7120 SvNVX(dstr) = SvNVX(sstr);
7121 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7122 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7124 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7125 else if (SvPVX(sstr) && SvLEN(sstr))
7126 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7128 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7129 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7130 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7131 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7132 LvTYPE(dstr) = LvTYPE(sstr);
7135 SvANY(dstr) = new_XPVGV();
7136 SvCUR(dstr) = SvCUR(sstr);
7137 SvLEN(dstr) = SvLEN(sstr);
7138 SvIVX(dstr) = SvIVX(sstr);
7139 SvNVX(dstr) = SvNVX(sstr);
7140 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7141 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7143 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7144 else if (SvPVX(sstr) && SvLEN(sstr))
7145 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7147 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7148 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7149 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7150 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7151 GvFLAGS(dstr) = GvFLAGS(sstr);
7152 GvGP(dstr) = gp_dup(GvGP(sstr));
7153 (void)GpREFCNT_inc(GvGP(dstr));
7156 SvANY(dstr) = new_XPVIO();
7157 SvCUR(dstr) = SvCUR(sstr);
7158 SvLEN(dstr) = SvLEN(sstr);
7159 SvIVX(dstr) = SvIVX(sstr);
7160 SvNVX(dstr) = SvNVX(sstr);
7161 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7162 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7164 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7165 else if (SvPVX(sstr) && SvLEN(sstr))
7166 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7168 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7169 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7170 if (IoOFP(sstr) == IoIFP(sstr))
7171 IoOFP(dstr) = IoIFP(dstr);
7173 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7174 /* PL_rsfp_filters entries have fake IoDIRP() */
7175 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7176 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7178 IoDIRP(dstr) = IoDIRP(sstr);
7179 IoLINES(dstr) = IoLINES(sstr);
7180 IoPAGE(dstr) = IoPAGE(sstr);
7181 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7182 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7183 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7184 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7185 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7186 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7187 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7188 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7189 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7190 IoTYPE(dstr) = IoTYPE(sstr);
7191 IoFLAGS(dstr) = IoFLAGS(sstr);
7194 SvANY(dstr) = new_XPVAV();
7195 SvCUR(dstr) = SvCUR(sstr);
7196 SvLEN(dstr) = SvLEN(sstr);
7197 SvIVX(dstr) = SvIVX(sstr);
7198 SvNVX(dstr) = SvNVX(sstr);
7199 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7200 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7201 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7202 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7203 if (AvARRAY((AV*)sstr)) {
7204 SV **dst_ary, **src_ary;
7205 SSize_t items = AvFILLp((AV*)sstr) + 1;
7207 src_ary = AvARRAY((AV*)sstr);
7208 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7209 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7210 SvPVX(dstr) = (char*)dst_ary;
7211 AvALLOC((AV*)dstr) = dst_ary;
7212 if (AvREAL((AV*)sstr)) {
7214 *dst_ary++ = sv_dup_inc(*src_ary++);
7218 *dst_ary++ = sv_dup(*src_ary++);
7220 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7221 while (items-- > 0) {
7222 *dst_ary++ = &PL_sv_undef;
7226 SvPVX(dstr) = Nullch;
7227 AvALLOC((AV*)dstr) = (SV**)NULL;
7231 SvANY(dstr) = new_XPVHV();
7232 SvCUR(dstr) = SvCUR(sstr);
7233 SvLEN(dstr) = SvLEN(sstr);
7234 SvIVX(dstr) = SvIVX(sstr);
7235 SvNVX(dstr) = SvNVX(sstr);
7236 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7237 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7238 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7239 if (HvARRAY((HV*)sstr)) {
7241 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7242 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7243 Newz(0, dxhv->xhv_array,
7244 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7245 while (i <= sxhv->xhv_max) {
7246 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7247 !!HvSHAREKEYS(sstr));
7250 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7253 SvPVX(dstr) = Nullch;
7254 HvEITER((HV*)dstr) = (HE*)NULL;
7256 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7257 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7260 SvANY(dstr) = new_XPVFM();
7261 FmLINES(dstr) = FmLINES(sstr);
7265 SvANY(dstr) = new_XPVCV();
7267 SvCUR(dstr) = SvCUR(sstr);
7268 SvLEN(dstr) = SvLEN(sstr);
7269 SvIVX(dstr) = SvIVX(sstr);
7270 SvNVX(dstr) = SvNVX(sstr);
7271 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7272 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7273 if (SvPVX(sstr) && SvLEN(sstr))
7274 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7276 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7277 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7278 CvSTART(dstr) = CvSTART(sstr);
7279 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7280 CvXSUB(dstr) = CvXSUB(sstr);
7281 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7282 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7283 CvDEPTH(dstr) = CvDEPTH(sstr);
7284 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7285 /* XXX padlists are real, but pretend to be not */
7286 AvREAL_on(CvPADLIST(sstr));
7287 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7288 AvREAL_off(CvPADLIST(sstr));
7289 AvREAL_off(CvPADLIST(dstr));
7292 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7293 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7294 CvFLAGS(dstr) = CvFLAGS(sstr);
7297 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7301 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7308 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7313 return (PERL_CONTEXT*)NULL;
7315 /* look for it in the table first */
7316 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7320 /* create anew and remember what it is */
7321 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7322 ptr_table_store(PL_ptr_table, cxs, ncxs);
7325 PERL_CONTEXT *cx = &cxs[ix];
7326 PERL_CONTEXT *ncx = &ncxs[ix];
7327 ncx->cx_type = cx->cx_type;
7328 if (CxTYPE(cx) == CXt_SUBST) {
7329 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7332 ncx->blk_oldsp = cx->blk_oldsp;
7333 ncx->blk_oldcop = cx->blk_oldcop;
7334 ncx->blk_oldretsp = cx->blk_oldretsp;
7335 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7336 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7337 ncx->blk_oldpm = cx->blk_oldpm;
7338 ncx->blk_gimme = cx->blk_gimme;
7339 switch (CxTYPE(cx)) {
7341 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7342 ? cv_dup_inc(cx->blk_sub.cv)
7343 : cv_dup(cx->blk_sub.cv));
7344 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7345 ? av_dup_inc(cx->blk_sub.argarray)
7347 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7348 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7349 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7350 ncx->blk_sub.lval = cx->blk_sub.lval;
7353 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7354 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7355 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7356 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7357 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7360 ncx->blk_loop.label = cx->blk_loop.label;
7361 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7362 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7363 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7364 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7365 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7366 ? cx->blk_loop.iterdata
7367 : gv_dup((GV*)cx->blk_loop.iterdata));
7368 ncx->blk_loop.oldcurpad
7369 = (SV**)ptr_table_fetch(PL_ptr_table,
7370 cx->blk_loop.oldcurpad);
7371 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7372 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7373 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7374 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7375 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7378 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7379 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7380 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7381 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7394 Perl_si_dup(pTHX_ PERL_SI *si)
7399 return (PERL_SI*)NULL;
7401 /* look for it in the table first */
7402 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7406 /* create anew and remember what it is */
7407 Newz(56, nsi, 1, PERL_SI);
7408 ptr_table_store(PL_ptr_table, si, nsi);
7410 nsi->si_stack = av_dup_inc(si->si_stack);
7411 nsi->si_cxix = si->si_cxix;
7412 nsi->si_cxmax = si->si_cxmax;
7413 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7414 nsi->si_type = si->si_type;
7415 nsi->si_prev = si_dup(si->si_prev);
7416 nsi->si_next = si_dup(si->si_next);
7417 nsi->si_markoff = si->si_markoff;
7422 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7423 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7424 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7425 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7426 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7427 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7428 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7429 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7430 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7431 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7432 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7433 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7436 #define pv_dup_inc(p) SAVEPV(p)
7437 #define pv_dup(p) SAVEPV(p)
7438 #define svp_dup_inc(p,pp) any_dup(p,pp)
7441 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7448 /* look for it in the table first */
7449 ret = ptr_table_fetch(PL_ptr_table, v);
7453 /* see if it is part of the interpreter structure */
7454 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7455 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7463 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7465 ANY *ss = proto_perl->Tsavestack;
7466 I32 ix = proto_perl->Tsavestack_ix;
7467 I32 max = proto_perl->Tsavestack_max;
7480 void (*dptr) (void*);
7481 void (*dxptr) (pTHXo_ void*);
7484 Newz(54, nss, max, ANY);
7490 case SAVEt_ITEM: /* normal string */
7491 sv = (SV*)POPPTR(ss,ix);
7492 TOPPTR(nss,ix) = sv_dup_inc(sv);
7493 sv = (SV*)POPPTR(ss,ix);
7494 TOPPTR(nss,ix) = sv_dup_inc(sv);
7496 case SAVEt_SV: /* scalar reference */
7497 sv = (SV*)POPPTR(ss,ix);
7498 TOPPTR(nss,ix) = sv_dup_inc(sv);
7499 gv = (GV*)POPPTR(ss,ix);
7500 TOPPTR(nss,ix) = gv_dup_inc(gv);
7502 case SAVEt_GENERIC_PVREF: /* generic char* */
7503 c = (char*)POPPTR(ss,ix);
7504 TOPPTR(nss,ix) = pv_dup(c);
7505 ptr = POPPTR(ss,ix);
7506 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7508 case SAVEt_GENERIC_SVREF: /* generic sv */
7509 case SAVEt_SVREF: /* scalar reference */
7510 sv = (SV*)POPPTR(ss,ix);
7511 TOPPTR(nss,ix) = sv_dup_inc(sv);
7512 ptr = POPPTR(ss,ix);
7513 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7515 case SAVEt_AV: /* array reference */
7516 av = (AV*)POPPTR(ss,ix);
7517 TOPPTR(nss,ix) = av_dup_inc(av);
7518 gv = (GV*)POPPTR(ss,ix);
7519 TOPPTR(nss,ix) = gv_dup(gv);
7521 case SAVEt_HV: /* hash reference */
7522 hv = (HV*)POPPTR(ss,ix);
7523 TOPPTR(nss,ix) = hv_dup_inc(hv);
7524 gv = (GV*)POPPTR(ss,ix);
7525 TOPPTR(nss,ix) = gv_dup(gv);
7527 case SAVEt_INT: /* int reference */
7528 ptr = POPPTR(ss,ix);
7529 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7530 intval = (int)POPINT(ss,ix);
7531 TOPINT(nss,ix) = intval;
7533 case SAVEt_LONG: /* long reference */
7534 ptr = POPPTR(ss,ix);
7535 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7536 longval = (long)POPLONG(ss,ix);
7537 TOPLONG(nss,ix) = longval;
7539 case SAVEt_I32: /* I32 reference */
7540 case SAVEt_I16: /* I16 reference */
7541 case SAVEt_I8: /* I8 reference */
7542 ptr = POPPTR(ss,ix);
7543 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7547 case SAVEt_IV: /* IV reference */
7548 ptr = POPPTR(ss,ix);
7549 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7553 case SAVEt_SPTR: /* SV* reference */
7554 ptr = POPPTR(ss,ix);
7555 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7556 sv = (SV*)POPPTR(ss,ix);
7557 TOPPTR(nss,ix) = sv_dup(sv);
7559 case SAVEt_VPTR: /* random* reference */
7560 ptr = POPPTR(ss,ix);
7561 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7562 ptr = POPPTR(ss,ix);
7563 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7565 case SAVEt_PPTR: /* char* reference */
7566 ptr = POPPTR(ss,ix);
7567 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7568 c = (char*)POPPTR(ss,ix);
7569 TOPPTR(nss,ix) = pv_dup(c);
7571 case SAVEt_HPTR: /* HV* reference */
7572 ptr = POPPTR(ss,ix);
7573 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7574 hv = (HV*)POPPTR(ss,ix);
7575 TOPPTR(nss,ix) = hv_dup(hv);
7577 case SAVEt_APTR: /* AV* reference */
7578 ptr = POPPTR(ss,ix);
7579 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7580 av = (AV*)POPPTR(ss,ix);
7581 TOPPTR(nss,ix) = av_dup(av);
7584 gv = (GV*)POPPTR(ss,ix);
7585 TOPPTR(nss,ix) = gv_dup(gv);
7587 case SAVEt_GP: /* scalar reference */
7588 gp = (GP*)POPPTR(ss,ix);
7589 TOPPTR(nss,ix) = gp = gp_dup(gp);
7590 (void)GpREFCNT_inc(gp);
7591 gv = (GV*)POPPTR(ss,ix);
7592 TOPPTR(nss,ix) = gv_dup_inc(c);
7593 c = (char*)POPPTR(ss,ix);
7594 TOPPTR(nss,ix) = pv_dup(c);
7601 sv = (SV*)POPPTR(ss,ix);
7602 TOPPTR(nss,ix) = sv_dup_inc(sv);
7605 ptr = POPPTR(ss,ix);
7606 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7607 /* these are assumed to be refcounted properly */
7608 switch (((OP*)ptr)->op_type) {
7615 TOPPTR(nss,ix) = ptr;
7620 TOPPTR(nss,ix) = Nullop;
7625 TOPPTR(nss,ix) = Nullop;
7628 c = (char*)POPPTR(ss,ix);
7629 TOPPTR(nss,ix) = pv_dup_inc(c);
7632 longval = POPLONG(ss,ix);
7633 TOPLONG(nss,ix) = longval;
7636 hv = (HV*)POPPTR(ss,ix);
7637 TOPPTR(nss,ix) = hv_dup_inc(hv);
7638 c = (char*)POPPTR(ss,ix);
7639 TOPPTR(nss,ix) = pv_dup_inc(c);
7643 case SAVEt_DESTRUCTOR:
7644 ptr = POPPTR(ss,ix);
7645 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7646 dptr = POPDPTR(ss,ix);
7647 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7649 case SAVEt_DESTRUCTOR_X:
7650 ptr = POPPTR(ss,ix);
7651 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7652 dxptr = POPDXPTR(ss,ix);
7653 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7655 case SAVEt_REGCONTEXT:
7661 case SAVEt_STACK_POS: /* Position on Perl stack */
7665 case SAVEt_AELEM: /* array element */
7666 sv = (SV*)POPPTR(ss,ix);
7667 TOPPTR(nss,ix) = sv_dup_inc(sv);
7670 av = (AV*)POPPTR(ss,ix);
7671 TOPPTR(nss,ix) = av_dup_inc(av);
7673 case SAVEt_HELEM: /* hash element */
7674 sv = (SV*)POPPTR(ss,ix);
7675 TOPPTR(nss,ix) = sv_dup_inc(sv);
7676 sv = (SV*)POPPTR(ss,ix);
7677 TOPPTR(nss,ix) = sv_dup_inc(sv);
7678 hv = (HV*)POPPTR(ss,ix);
7679 TOPPTR(nss,ix) = hv_dup_inc(hv);
7682 ptr = POPPTR(ss,ix);
7683 TOPPTR(nss,ix) = ptr;
7690 av = (AV*)POPPTR(ss,ix);
7691 TOPPTR(nss,ix) = av_dup(av);
7694 longval = (long)POPLONG(ss,ix);
7695 TOPLONG(nss,ix) = longval;
7696 ptr = POPPTR(ss,ix);
7697 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7698 sv = (SV*)POPPTR(ss,ix);
7699 TOPPTR(nss,ix) = sv_dup(sv);
7702 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7714 perl_clone(PerlInterpreter *proto_perl, UV flags)
7717 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7720 #ifdef PERL_IMPLICIT_SYS
7721 return perl_clone_using(proto_perl, flags,
7723 proto_perl->IMemShared,
7724 proto_perl->IMemParse,
7734 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7735 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7736 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7737 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7738 struct IPerlDir* ipD, struct IPerlSock* ipS,
7739 struct IPerlProc* ipP)
7741 /* XXX many of the string copies here can be optimized if they're
7742 * constants; they need to be allocated as common memory and just
7743 * their pointers copied. */
7747 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7749 PERL_SET_THX(pPerl);
7750 # else /* !PERL_OBJECT */
7751 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7752 PERL_SET_THX(my_perl);
7755 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7760 # else /* !DEBUGGING */
7761 Zero(my_perl, 1, PerlInterpreter);
7762 # endif /* DEBUGGING */
7766 PL_MemShared = ipMS;
7774 # endif /* PERL_OBJECT */
7775 #else /* !PERL_IMPLICIT_SYS */
7777 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7778 PERL_SET_THX(my_perl);
7781 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7786 # else /* !DEBUGGING */
7787 Zero(my_perl, 1, PerlInterpreter);
7788 # endif /* DEBUGGING */
7789 #endif /* PERL_IMPLICIT_SYS */
7792 PL_xiv_arenaroot = NULL;
7794 PL_xnv_arenaroot = NULL;
7796 PL_xrv_arenaroot = NULL;
7798 PL_xpv_arenaroot = NULL;
7800 PL_xpviv_arenaroot = NULL;
7801 PL_xpviv_root = NULL;
7802 PL_xpvnv_arenaroot = NULL;
7803 PL_xpvnv_root = NULL;
7804 PL_xpvcv_arenaroot = NULL;
7805 PL_xpvcv_root = NULL;
7806 PL_xpvav_arenaroot = NULL;
7807 PL_xpvav_root = NULL;
7808 PL_xpvhv_arenaroot = NULL;
7809 PL_xpvhv_root = NULL;
7810 PL_xpvmg_arenaroot = NULL;
7811 PL_xpvmg_root = NULL;
7812 PL_xpvlv_arenaroot = NULL;
7813 PL_xpvlv_root = NULL;
7814 PL_xpvbm_arenaroot = NULL;
7815 PL_xpvbm_root = NULL;
7816 PL_he_arenaroot = NULL;
7818 PL_nice_chunk = NULL;
7819 PL_nice_chunk_size = 0;
7822 PL_sv_root = Nullsv;
7823 PL_sv_arenaroot = Nullsv;
7825 PL_debug = proto_perl->Idebug;
7827 /* create SV map for pointer relocation */
7828 PL_ptr_table = ptr_table_new();
7830 /* initialize these special pointers as early as possible */
7831 SvANY(&PL_sv_undef) = NULL;
7832 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7833 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7834 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7837 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7839 SvANY(&PL_sv_no) = new_XPVNV();
7841 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7842 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7843 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7844 SvCUR(&PL_sv_no) = 0;
7845 SvLEN(&PL_sv_no) = 1;
7846 SvNVX(&PL_sv_no) = 0;
7847 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7850 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7852 SvANY(&PL_sv_yes) = new_XPVNV();
7854 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7855 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7856 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7857 SvCUR(&PL_sv_yes) = 1;
7858 SvLEN(&PL_sv_yes) = 2;
7859 SvNVX(&PL_sv_yes) = 1;
7860 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7862 /* create shared string table */
7863 PL_strtab = newHV();
7864 HvSHAREKEYS_off(PL_strtab);
7865 hv_ksplit(PL_strtab, 512);
7866 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7868 PL_compiling = proto_perl->Icompiling;
7869 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7870 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7871 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7872 if (!specialWARN(PL_compiling.cop_warnings))
7873 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7874 if (!specialCopIO(PL_compiling.cop_io))
7875 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
7876 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7878 /* pseudo environmental stuff */
7879 PL_origargc = proto_perl->Iorigargc;
7881 New(0, PL_origargv, i+1, char*);
7882 PL_origargv[i] = '\0';
7884 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7886 PL_envgv = gv_dup(proto_perl->Ienvgv);
7887 PL_incgv = gv_dup(proto_perl->Iincgv);
7888 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7889 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7890 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7891 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7894 PL_minus_c = proto_perl->Iminus_c;
7895 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7896 PL_localpatches = proto_perl->Ilocalpatches;
7897 PL_splitstr = proto_perl->Isplitstr;
7898 PL_preprocess = proto_perl->Ipreprocess;
7899 PL_minus_n = proto_perl->Iminus_n;
7900 PL_minus_p = proto_perl->Iminus_p;
7901 PL_minus_l = proto_perl->Iminus_l;
7902 PL_minus_a = proto_perl->Iminus_a;
7903 PL_minus_F = proto_perl->Iminus_F;
7904 PL_doswitches = proto_perl->Idoswitches;
7905 PL_dowarn = proto_perl->Idowarn;
7906 PL_doextract = proto_perl->Idoextract;
7907 PL_sawampersand = proto_perl->Isawampersand;
7908 PL_unsafe = proto_perl->Iunsafe;
7909 PL_inplace = SAVEPV(proto_perl->Iinplace);
7910 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7911 PL_perldb = proto_perl->Iperldb;
7912 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7914 /* magical thingies */
7915 /* XXX time(&PL_basetime) when asked for? */
7916 PL_basetime = proto_perl->Ibasetime;
7917 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7919 PL_maxsysfd = proto_perl->Imaxsysfd;
7920 PL_multiline = proto_perl->Imultiline;
7921 PL_statusvalue = proto_perl->Istatusvalue;
7923 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7926 /* shortcuts to various I/O objects */
7927 PL_stdingv = gv_dup(proto_perl->Istdingv);
7928 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7929 PL_defgv = gv_dup(proto_perl->Idefgv);
7930 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7931 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7932 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7934 /* shortcuts to regexp stuff */
7935 PL_replgv = gv_dup(proto_perl->Ireplgv);
7937 /* shortcuts to misc objects */
7938 PL_errgv = gv_dup(proto_perl->Ierrgv);
7940 /* shortcuts to debugging objects */
7941 PL_DBgv = gv_dup(proto_perl->IDBgv);
7942 PL_DBline = gv_dup(proto_perl->IDBline);
7943 PL_DBsub = gv_dup(proto_perl->IDBsub);
7944 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7945 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7946 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7947 PL_lineary = av_dup(proto_perl->Ilineary);
7948 PL_dbargs = av_dup(proto_perl->Idbargs);
7951 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7952 PL_curstash = hv_dup(proto_perl->Tcurstash);
7953 PL_debstash = hv_dup(proto_perl->Idebstash);
7954 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7955 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7957 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7958 PL_endav = av_dup_inc(proto_perl->Iendav);
7959 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7960 PL_initav = av_dup_inc(proto_perl->Iinitav);
7962 PL_sub_generation = proto_perl->Isub_generation;
7964 /* funky return mechanisms */
7965 PL_forkprocess = proto_perl->Iforkprocess;
7967 /* subprocess state */
7968 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7970 /* internal state */
7971 PL_tainting = proto_perl->Itainting;
7972 PL_maxo = proto_perl->Imaxo;
7973 if (proto_perl->Iop_mask)
7974 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7976 PL_op_mask = Nullch;
7978 /* current interpreter roots */
7979 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7980 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7981 PL_main_start = proto_perl->Imain_start;
7982 PL_eval_root = proto_perl->Ieval_root;
7983 PL_eval_start = proto_perl->Ieval_start;
7985 /* runtime control stuff */
7986 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7987 PL_copline = proto_perl->Icopline;
7989 PL_filemode = proto_perl->Ifilemode;
7990 PL_lastfd = proto_perl->Ilastfd;
7991 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7994 PL_gensym = proto_perl->Igensym;
7995 PL_preambled = proto_perl->Ipreambled;
7996 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7997 PL_laststatval = proto_perl->Ilaststatval;
7998 PL_laststype = proto_perl->Ilaststype;
7999 PL_mess_sv = Nullsv;
8001 PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv);
8002 PL_ofmt = SAVEPV(proto_perl->Iofmt);
8004 /* interpreter atexit processing */
8005 PL_exitlistlen = proto_perl->Iexitlistlen;
8006 if (PL_exitlistlen) {
8007 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8008 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8011 PL_exitlist = (PerlExitListEntry*)NULL;
8012 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
8014 PL_profiledata = NULL;
8015 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
8016 /* PL_rsfp_filters entries have fake IoDIRP() */
8017 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
8019 PL_compcv = cv_dup(proto_perl->Icompcv);
8020 PL_comppad = av_dup(proto_perl->Icomppad);
8021 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
8022 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
8023 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8024 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8025 proto_perl->Tcurpad);
8027 #ifdef HAVE_INTERP_INTERN
8028 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8031 /* more statics moved here */
8032 PL_generation = proto_perl->Igeneration;
8033 PL_DBcv = cv_dup(proto_perl->IDBcv);
8035 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8036 PL_in_clean_all = proto_perl->Iin_clean_all;
8038 PL_uid = proto_perl->Iuid;
8039 PL_euid = proto_perl->Ieuid;
8040 PL_gid = proto_perl->Igid;
8041 PL_egid = proto_perl->Iegid;
8042 PL_nomemok = proto_perl->Inomemok;
8043 PL_an = proto_perl->Ian;
8044 PL_cop_seqmax = proto_perl->Icop_seqmax;
8045 PL_op_seqmax = proto_perl->Iop_seqmax;
8046 PL_evalseq = proto_perl->Ievalseq;
8047 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8048 PL_origalen = proto_perl->Iorigalen;
8049 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8050 PL_osname = SAVEPV(proto_perl->Iosname);
8051 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8052 PL_sighandlerp = proto_perl->Isighandlerp;
8055 PL_runops = proto_perl->Irunops;
8057 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8060 PL_cshlen = proto_perl->Icshlen;
8061 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8064 PL_lex_state = proto_perl->Ilex_state;
8065 PL_lex_defer = proto_perl->Ilex_defer;
8066 PL_lex_expect = proto_perl->Ilex_expect;
8067 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8068 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8069 PL_lex_starts = proto_perl->Ilex_starts;
8070 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8071 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8072 PL_lex_op = proto_perl->Ilex_op;
8073 PL_lex_inpat = proto_perl->Ilex_inpat;
8074 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8075 PL_lex_brackets = proto_perl->Ilex_brackets;
8076 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8077 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8078 PL_lex_casemods = proto_perl->Ilex_casemods;
8079 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8080 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8082 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8083 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8084 PL_nexttoke = proto_perl->Inexttoke;
8086 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8087 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8088 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8089 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8090 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8091 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8092 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8093 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8094 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8095 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8096 PL_pending_ident = proto_perl->Ipending_ident;
8097 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8099 PL_expect = proto_perl->Iexpect;
8101 PL_multi_start = proto_perl->Imulti_start;
8102 PL_multi_end = proto_perl->Imulti_end;
8103 PL_multi_open = proto_perl->Imulti_open;
8104 PL_multi_close = proto_perl->Imulti_close;
8106 PL_error_count = proto_perl->Ierror_count;
8107 PL_subline = proto_perl->Isubline;
8108 PL_subname = sv_dup_inc(proto_perl->Isubname);
8110 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8111 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8112 PL_padix = proto_perl->Ipadix;
8113 PL_padix_floor = proto_perl->Ipadix_floor;
8114 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8116 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8117 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8118 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8119 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8120 PL_last_lop_op = proto_perl->Ilast_lop_op;
8121 PL_in_my = proto_perl->Iin_my;
8122 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8124 PL_cryptseen = proto_perl->Icryptseen;
8127 PL_hints = proto_perl->Ihints;
8129 PL_amagic_generation = proto_perl->Iamagic_generation;
8131 #ifdef USE_LOCALE_COLLATE
8132 PL_collation_ix = proto_perl->Icollation_ix;
8133 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8134 PL_collation_standard = proto_perl->Icollation_standard;
8135 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8136 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8137 #endif /* USE_LOCALE_COLLATE */
8139 #ifdef USE_LOCALE_NUMERIC
8140 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8141 PL_numeric_standard = proto_perl->Inumeric_standard;
8142 PL_numeric_local = proto_perl->Inumeric_local;
8143 PL_numeric_radix = proto_perl->Inumeric_radix;
8144 #endif /* !USE_LOCALE_NUMERIC */
8146 /* utf8 character classes */
8147 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8148 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8149 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8150 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8151 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8152 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8153 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8154 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8155 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8156 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8157 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8158 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8159 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8160 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8161 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8162 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8163 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8166 PL_last_swash_hv = Nullhv; /* reinits on demand */
8167 PL_last_swash_klen = 0;
8168 PL_last_swash_key[0]= '\0';
8169 PL_last_swash_tmps = (U8*)NULL;
8170 PL_last_swash_slen = 0;
8172 /* perly.c globals */
8173 PL_yydebug = proto_perl->Iyydebug;
8174 PL_yynerrs = proto_perl->Iyynerrs;
8175 PL_yyerrflag = proto_perl->Iyyerrflag;
8176 PL_yychar = proto_perl->Iyychar;
8177 PL_yyval = proto_perl->Iyyval;
8178 PL_yylval = proto_perl->Iyylval;
8180 PL_glob_index = proto_perl->Iglob_index;
8181 PL_srand_called = proto_perl->Isrand_called;
8182 PL_uudmap['M'] = 0; /* reinits on demand */
8183 PL_bitcount = Nullch; /* reinits on demand */
8185 if (proto_perl->Ipsig_ptr) {
8186 int sig_num[] = { SIG_NUM };
8187 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8188 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8189 for (i = 1; PL_sig_name[i]; i++) {
8190 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8191 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8195 PL_psig_ptr = (SV**)NULL;
8196 PL_psig_name = (SV**)NULL;
8199 /* thrdvar.h stuff */
8202 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8203 PL_tmps_ix = proto_perl->Ttmps_ix;
8204 PL_tmps_max = proto_perl->Ttmps_max;
8205 PL_tmps_floor = proto_perl->Ttmps_floor;
8206 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8208 while (i <= PL_tmps_ix) {
8209 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8213 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8214 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8215 Newz(54, PL_markstack, i, I32);
8216 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8217 - proto_perl->Tmarkstack);
8218 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8219 - proto_perl->Tmarkstack);
8220 Copy(proto_perl->Tmarkstack, PL_markstack,
8221 PL_markstack_ptr - PL_markstack + 1, I32);
8223 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8224 * NOTE: unlike the others! */
8225 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8226 PL_scopestack_max = proto_perl->Tscopestack_max;
8227 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8228 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8230 /* next push_return() sets PL_retstack[PL_retstack_ix]
8231 * NOTE: unlike the others! */
8232 PL_retstack_ix = proto_perl->Tretstack_ix;
8233 PL_retstack_max = proto_perl->Tretstack_max;
8234 Newz(54, PL_retstack, PL_retstack_max, OP*);
8235 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8237 /* NOTE: si_dup() looks at PL_markstack */
8238 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8240 /* PL_curstack = PL_curstackinfo->si_stack; */
8241 PL_curstack = av_dup(proto_perl->Tcurstack);
8242 PL_mainstack = av_dup(proto_perl->Tmainstack);
8244 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8245 PL_stack_base = AvARRAY(PL_curstack);
8246 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8247 - proto_perl->Tstack_base);
8248 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8250 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8251 * NOTE: unlike the others! */
8252 PL_savestack_ix = proto_perl->Tsavestack_ix;
8253 PL_savestack_max = proto_perl->Tsavestack_max;
8254 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8255 PL_savestack = ss_dup(proto_perl);
8259 ENTER; /* perl_destruct() wants to LEAVE; */
8262 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8263 PL_top_env = &PL_start_env;
8265 PL_op = proto_perl->Top;
8268 PL_Xpv = (XPV*)NULL;
8269 PL_na = proto_perl->Tna;
8271 PL_statbuf = proto_perl->Tstatbuf;
8272 PL_statcache = proto_perl->Tstatcache;
8273 PL_statgv = gv_dup(proto_perl->Tstatgv);
8274 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8276 PL_timesbuf = proto_perl->Ttimesbuf;
8279 PL_tainted = proto_perl->Ttainted;
8280 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8281 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8282 PL_rs = sv_dup_inc(proto_perl->Trs);
8283 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8284 PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv);
8285 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8286 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8287 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8288 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8289 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8291 PL_restartop = proto_perl->Trestartop;
8292 PL_in_eval = proto_perl->Tin_eval;
8293 PL_delaymagic = proto_perl->Tdelaymagic;
8294 PL_dirty = proto_perl->Tdirty;
8295 PL_localizing = proto_perl->Tlocalizing;
8297 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8298 PL_protect = proto_perl->Tprotect;
8300 PL_errors = sv_dup_inc(proto_perl->Terrors);
8301 PL_av_fetch_sv = Nullsv;
8302 PL_hv_fetch_sv = Nullsv;
8303 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8304 PL_modcount = proto_perl->Tmodcount;
8305 PL_lastgotoprobe = Nullop;
8306 PL_dumpindent = proto_perl->Tdumpindent;
8308 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8309 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8310 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8311 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8312 PL_sortcxix = proto_perl->Tsortcxix;
8313 PL_efloatbuf = Nullch; /* reinits on demand */
8314 PL_efloatsize = 0; /* reinits on demand */
8318 PL_screamfirst = NULL;
8319 PL_screamnext = NULL;
8320 PL_maxscream = -1; /* reinits on demand */
8321 PL_lastscream = Nullsv;
8323 PL_watchaddr = NULL;
8324 PL_watchok = Nullch;
8326 PL_regdummy = proto_perl->Tregdummy;
8327 PL_regcomp_parse = Nullch;
8328 PL_regxend = Nullch;
8329 PL_regcode = (regnode*)NULL;
8332 PL_regprecomp = Nullch;
8337 PL_seen_zerolen = 0;
8339 PL_regcomp_rx = (regexp*)NULL;
8341 PL_colorset = 0; /* reinits PL_colors[] */
8342 /*PL_colors[6] = {0,0,0,0,0,0};*/
8343 PL_reg_whilem_seen = 0;
8344 PL_reginput = Nullch;
8347 PL_regstartp = (I32*)NULL;
8348 PL_regendp = (I32*)NULL;
8349 PL_reglastparen = (U32*)NULL;
8350 PL_regtill = Nullch;
8352 PL_reg_start_tmp = (char**)NULL;
8353 PL_reg_start_tmpl = 0;
8354 PL_regdata = (struct reg_data*)NULL;
8357 PL_reg_eval_set = 0;
8359 PL_regprogram = (regnode*)NULL;
8361 PL_regcc = (CURCUR*)NULL;
8362 PL_reg_call_cc = (struct re_cc_state*)NULL;
8363 PL_reg_re = (regexp*)NULL;
8364 PL_reg_ganch = Nullch;
8366 PL_reg_magic = (MAGIC*)NULL;
8368 PL_reg_oldcurpm = (PMOP*)NULL;
8369 PL_reg_curpm = (PMOP*)NULL;
8370 PL_reg_oldsaved = Nullch;
8371 PL_reg_oldsavedlen = 0;
8373 PL_reg_leftiter = 0;
8374 PL_reg_poscache = Nullch;
8375 PL_reg_poscache_size= 0;
8377 /* RE engine - function pointers */
8378 PL_regcompp = proto_perl->Tregcompp;
8379 PL_regexecp = proto_perl->Tregexecp;
8380 PL_regint_start = proto_perl->Tregint_start;
8381 PL_regint_string = proto_perl->Tregint_string;
8382 PL_regfree = proto_perl->Tregfree;
8384 PL_reginterp_cnt = 0;
8385 PL_reg_starttry = 0;
8388 return (PerlInterpreter*)pPerl;
8394 #else /* !USE_ITHREADS */
8400 #endif /* USE_ITHREADS */
8403 do_report_used(pTHXo_ SV *sv)
8405 if (SvTYPE(sv) != SVTYPEMASK) {
8406 PerlIO_printf(Perl_debug_log, "****\n");
8412 do_clean_objs(pTHXo_ SV *sv)
8416 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8417 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8418 if (SvWEAKREF(sv)) {
8429 /* XXX Might want to check arrays, etc. */
8432 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8434 do_clean_named_objs(pTHXo_ SV *sv)
8436 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8437 if ( SvOBJECT(GvSV(sv)) ||
8438 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8439 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8440 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8441 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8443 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8451 do_clean_all(pTHXo_ SV *sv)
8453 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8454 SvFLAGS(sv) |= SVf_BREAK;