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.
2402 for (s = t = SvPVX(sv); t < SvEND(sv) && !hibit; t++) {
2411 if (SvREADONLY(sv) && SvFAKE(sv)) {
2412 Perl_warn(aTHX_ "%d s=%p t=%p e=%p",(int)hibit,s,t,SvEND(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;
2420 SvLEN(sv) = len; /* No longer know the real size. */
2422 Safefree(s); /* No longer using what was there before. */
2427 =for apidoc sv_utf8_downgrade
2429 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2430 This may not be possible if the PV contains non-byte encoding characters;
2431 if this is the case, either returns false or, if C<fail_ok> is not
2438 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2440 if (SvPOK(sv) && SvUTF8(sv)) {
2442 char *c = SvPVX(sv);
2443 STRLEN len = SvCUR(sv);
2445 if (!utf8_to_bytes((U8*)c, &len)) {
2450 Perl_croak(aTHX_ "Wide character in %s",
2451 PL_op_desc[PL_op->op_type]);
2453 Perl_croak(aTHX_ "Wide character");
2465 =for apidoc sv_utf8_encode
2467 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2468 flag so that it looks like bytes again. Nothing calls this.
2474 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2476 sv_utf8_upgrade(sv);
2481 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2485 bool has_utf = FALSE;
2486 if (!sv_utf8_downgrade(sv, TRUE))
2489 /* it is actually just a matter of turning the utf8 flag on, but
2490 * we want to make sure everything inside is valid utf8 first.
2493 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2496 while (c < SvEND(sv)) {
2507 /* Note: sv_setsv() should not be called with a source string that needs
2508 * to be reused, since it may destroy the source string if it is marked
2513 =for apidoc sv_setsv
2515 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2516 The source SV may be destroyed if it is mortal. Does not handle 'set'
2517 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2524 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2526 register U32 sflags;
2532 SV_CHECK_THINKFIRST(dstr);
2534 sstr = &PL_sv_undef;
2535 stype = SvTYPE(sstr);
2536 dtype = SvTYPE(dstr);
2540 /* There's a lot of redundancy below but we're going for speed here */
2545 if (dtype != SVt_PVGV) {
2546 (void)SvOK_off(dstr);
2554 sv_upgrade(dstr, SVt_IV);
2557 sv_upgrade(dstr, SVt_PVNV);
2561 sv_upgrade(dstr, SVt_PVIV);
2564 (void)SvIOK_only(dstr);
2565 SvIVX(dstr) = SvIVX(sstr);
2568 if (SvTAINTED(sstr))
2579 sv_upgrade(dstr, SVt_NV);
2584 sv_upgrade(dstr, SVt_PVNV);
2587 SvNVX(dstr) = SvNVX(sstr);
2588 (void)SvNOK_only(dstr);
2589 if (SvTAINTED(sstr))
2597 sv_upgrade(dstr, SVt_RV);
2598 else if (dtype == SVt_PVGV &&
2599 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2602 if (GvIMPORTED(dstr) != GVf_IMPORTED
2603 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2605 GvIMPORTED_on(dstr);
2616 sv_upgrade(dstr, SVt_PV);
2619 if (dtype < SVt_PVIV)
2620 sv_upgrade(dstr, SVt_PVIV);
2623 if (dtype < SVt_PVNV)
2624 sv_upgrade(dstr, SVt_PVNV);
2631 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2632 PL_op_name[PL_op->op_type]);
2634 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2638 if (dtype <= SVt_PVGV) {
2640 if (dtype != SVt_PVGV) {
2641 char *name = GvNAME(sstr);
2642 STRLEN len = GvNAMELEN(sstr);
2643 sv_upgrade(dstr, SVt_PVGV);
2644 sv_magic(dstr, dstr, '*', Nullch, 0);
2645 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2646 GvNAME(dstr) = savepvn(name, len);
2647 GvNAMELEN(dstr) = len;
2648 SvFAKE_on(dstr); /* can coerce to non-glob */
2650 /* ahem, death to those who redefine active sort subs */
2651 else if (PL_curstackinfo->si_type == PERLSI_SORT
2652 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2653 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2655 (void)SvOK_off(dstr);
2656 GvINTRO_off(dstr); /* one-shot flag */
2658 GvGP(dstr) = gp_ref(GvGP(sstr));
2659 if (SvTAINTED(sstr))
2661 if (GvIMPORTED(dstr) != GVf_IMPORTED
2662 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2664 GvIMPORTED_on(dstr);
2672 if (SvGMAGICAL(sstr)) {
2674 if (SvTYPE(sstr) != stype) {
2675 stype = SvTYPE(sstr);
2676 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2680 if (stype == SVt_PVLV)
2681 (void)SvUPGRADE(dstr, SVt_PVNV);
2683 (void)SvUPGRADE(dstr, stype);
2686 sflags = SvFLAGS(sstr);
2688 if (sflags & SVf_ROK) {
2689 if (dtype >= SVt_PV) {
2690 if (dtype == SVt_PVGV) {
2691 SV *sref = SvREFCNT_inc(SvRV(sstr));
2693 int intro = GvINTRO(dstr);
2698 GvINTRO_off(dstr); /* one-shot flag */
2699 Newz(602,gp, 1, GP);
2700 GvGP(dstr) = gp_ref(gp);
2701 GvSV(dstr) = NEWSV(72,0);
2702 GvLINE(dstr) = CopLINE(PL_curcop);
2703 GvEGV(dstr) = (GV*)dstr;
2706 switch (SvTYPE(sref)) {
2709 SAVESPTR(GvAV(dstr));
2711 dref = (SV*)GvAV(dstr);
2712 GvAV(dstr) = (AV*)sref;
2713 if (!GvIMPORTED_AV(dstr)
2714 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2716 GvIMPORTED_AV_on(dstr);
2721 SAVESPTR(GvHV(dstr));
2723 dref = (SV*)GvHV(dstr);
2724 GvHV(dstr) = (HV*)sref;
2725 if (!GvIMPORTED_HV(dstr)
2726 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2728 GvIMPORTED_HV_on(dstr);
2733 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2734 SvREFCNT_dec(GvCV(dstr));
2735 GvCV(dstr) = Nullcv;
2736 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2737 PL_sub_generation++;
2739 SAVESPTR(GvCV(dstr));
2742 dref = (SV*)GvCV(dstr);
2743 if (GvCV(dstr) != (CV*)sref) {
2744 CV* cv = GvCV(dstr);
2746 if (!GvCVGEN((GV*)dstr) &&
2747 (CvROOT(cv) || CvXSUB(cv)))
2750 /* ahem, death to those who redefine
2751 * active sort subs */
2752 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2753 PL_sortcop == CvSTART(cv))
2755 "Can't redefine active sort subroutine %s",
2756 GvENAME((GV*)dstr));
2757 /* Redefining a sub - warning is mandatory if
2758 it was a const and its value changed. */
2759 if (ckWARN(WARN_REDEFINE)
2761 && (!CvCONST((CV*)sref)
2762 || sv_cmp(cv_const_sv(cv),
2763 cv_const_sv((CV*)sref)))))
2765 Perl_warner(aTHX_ WARN_REDEFINE,
2767 ? "Constant subroutine %s redefined"
2768 : "Subroutine %s redefined",
2769 GvENAME((GV*)dstr));
2772 cv_ckproto(cv, (GV*)dstr,
2773 SvPOK(sref) ? SvPVX(sref) : Nullch);
2775 GvCV(dstr) = (CV*)sref;
2776 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2777 GvASSUMECV_on(dstr);
2778 PL_sub_generation++;
2780 if (!GvIMPORTED_CV(dstr)
2781 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2783 GvIMPORTED_CV_on(dstr);
2788 SAVESPTR(GvIOp(dstr));
2790 dref = (SV*)GvIOp(dstr);
2791 GvIOp(dstr) = (IO*)sref;
2795 SAVESPTR(GvFORM(dstr));
2797 dref = (SV*)GvFORM(dstr);
2798 GvFORM(dstr) = (CV*)sref;
2802 SAVESPTR(GvSV(dstr));
2804 dref = (SV*)GvSV(dstr);
2806 if (!GvIMPORTED_SV(dstr)
2807 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2809 GvIMPORTED_SV_on(dstr);
2817 if (SvTAINTED(sstr))
2822 (void)SvOOK_off(dstr); /* backoff */
2824 Safefree(SvPVX(dstr));
2825 SvLEN(dstr)=SvCUR(dstr)=0;
2828 (void)SvOK_off(dstr);
2829 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2831 if (sflags & SVp_NOK) {
2833 SvNVX(dstr) = SvNVX(sstr);
2835 if (sflags & SVp_IOK) {
2836 (void)SvIOK_on(dstr);
2837 SvIVX(dstr) = SvIVX(sstr);
2838 if (sflags & SVf_IVisUV)
2841 if (SvAMAGIC(sstr)) {
2845 else if (sflags & SVp_POK) {
2848 * Check to see if we can just swipe the string. If so, it's a
2849 * possible small lose on short strings, but a big win on long ones.
2850 * It might even be a win on short strings if SvPVX(dstr)
2851 * has to be allocated and SvPVX(sstr) has to be freed.
2854 if (SvTEMP(sstr) && /* slated for free anyway? */
2855 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2856 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2857 SvLEN(sstr) && /* and really is a string */
2858 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
2860 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2862 SvFLAGS(dstr) &= ~SVf_OOK;
2863 Safefree(SvPVX(dstr) - SvIVX(dstr));
2865 else if (SvLEN(dstr))
2866 Safefree(SvPVX(dstr));
2868 (void)SvPOK_only(dstr);
2869 SvPV_set(dstr, SvPVX(sstr));
2870 SvLEN_set(dstr, SvLEN(sstr));
2871 SvCUR_set(dstr, SvCUR(sstr));
2874 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2875 SvPV_set(sstr, Nullch);
2880 else { /* have to copy actual string */
2881 STRLEN len = SvCUR(sstr);
2883 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2884 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2885 SvCUR_set(dstr, len);
2886 *SvEND(dstr) = '\0';
2887 (void)SvPOK_only(dstr);
2889 if ((sflags & SVf_UTF8) && !IN_BYTE)
2892 if (sflags & SVp_NOK) {
2894 SvNVX(dstr) = SvNVX(sstr);
2896 if (sflags & SVp_IOK) {
2897 (void)SvIOK_on(dstr);
2898 SvIVX(dstr) = SvIVX(sstr);
2899 if (sflags & SVf_IVisUV)
2903 else if (sflags & SVp_NOK) {
2904 SvNVX(dstr) = SvNVX(sstr);
2905 (void)SvNOK_only(dstr);
2906 if (sflags & SVf_IOK) {
2907 (void)SvIOK_on(dstr);
2908 SvIVX(dstr) = SvIVX(sstr);
2909 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2910 if (sflags & SVf_IVisUV)
2914 else if (sflags & SVp_IOK) {
2915 (void)SvIOK_only(dstr);
2916 SvIVX(dstr) = SvIVX(sstr);
2917 if (sflags & SVf_IVisUV)
2921 if (dtype == SVt_PVGV) {
2922 if (ckWARN(WARN_MISC))
2923 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2926 (void)SvOK_off(dstr);
2928 if (SvTAINTED(sstr))
2933 =for apidoc sv_setsv_mg
2935 Like C<sv_setsv>, but also handles 'set' magic.
2941 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2943 sv_setsv(dstr,sstr);
2948 =for apidoc sv_setpvn
2950 Copies a string into an SV. The C<len> parameter indicates the number of
2951 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2957 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2959 register char *dptr;
2961 /* len is STRLEN which is unsigned, need to copy to signed */
2965 SV_CHECK_THINKFIRST(sv);
2970 (void)SvUPGRADE(sv, SVt_PV);
2972 SvGROW(sv, len + 1);
2974 Move(ptr,dptr,len,char);
2977 (void)SvPOK_only(sv); /* validate pointer */
2982 =for apidoc sv_setpvn_mg
2984 Like C<sv_setpvn>, but also handles 'set' magic.
2990 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2992 sv_setpvn(sv,ptr,len);
2997 =for apidoc sv_setpv
2999 Copies a string into an SV. The string must be null-terminated. Does not
3000 handle 'set' magic. See C<sv_setpv_mg>.
3006 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3008 register STRLEN len;
3010 SV_CHECK_THINKFIRST(sv);
3016 (void)SvUPGRADE(sv, SVt_PV);
3018 SvGROW(sv, len + 1);
3019 Move(ptr,SvPVX(sv),len+1,char);
3021 (void)SvPOK_only(sv); /* validate pointer */
3026 =for apidoc sv_setpv_mg
3028 Like C<sv_setpv>, but also handles 'set' magic.
3034 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3041 =for apidoc sv_usepvn
3043 Tells an SV to use C<ptr> to find its string value. Normally the string is
3044 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3045 The C<ptr> should point to memory that was allocated by C<malloc>. The
3046 string length, C<len>, must be supplied. This function will realloc the
3047 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3048 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3049 See C<sv_usepvn_mg>.
3055 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3057 SV_CHECK_THINKFIRST(sv);
3058 (void)SvUPGRADE(sv, SVt_PV);
3063 (void)SvOOK_off(sv);
3064 if (SvPVX(sv) && SvLEN(sv))
3065 Safefree(SvPVX(sv));
3066 Renew(ptr, len+1, char);
3069 SvLEN_set(sv, len+1);
3071 (void)SvPOK_only(sv); /* validate pointer */
3076 =for apidoc sv_usepvn_mg
3078 Like C<sv_usepvn>, but also handles 'set' magic.
3084 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3086 sv_usepvn(sv,ptr,len);
3091 Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags)
3093 if (SvREADONLY(sv)) {
3095 char *pvx = SvPVX(sv);
3096 STRLEN len = SvCUR(sv);
3097 U32 hash = SvUVX(sv);
3098 SvGROW(sv, len + 1);
3099 Move(pvx,SvPVX(sv),len,char);
3103 unsharepvn(pvx,SvUTF8(sv)?-len:len,hash);
3105 else if (PL_curcop != &PL_compiling)
3106 Perl_croak(aTHX_ PL_no_modify);
3109 sv_unref_flags(sv, flags);
3110 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3115 Perl_sv_force_normal(pTHX_ register SV *sv)
3117 sv_force_normal_flags(sv, 0);
3123 Efficient removal of characters from the beginning of the string buffer.
3124 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3125 the string buffer. The C<ptr> becomes the first character of the adjusted
3132 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3136 register STRLEN delta;
3138 if (!ptr || !SvPOKp(sv))
3140 SV_CHECK_THINKFIRST(sv);
3141 if (SvTYPE(sv) < SVt_PVIV)
3142 sv_upgrade(sv,SVt_PVIV);
3145 if (!SvLEN(sv)) { /* make copy of shared string */
3146 char *pvx = SvPVX(sv);
3147 STRLEN len = SvCUR(sv);
3148 SvGROW(sv, len + 1);
3149 Move(pvx,SvPVX(sv),len,char);
3153 SvFLAGS(sv) |= SVf_OOK;
3155 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3156 delta = ptr - SvPVX(sv);
3164 =for apidoc sv_catpvn
3166 Concatenates the string onto the end of the string which is in the SV. The
3167 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3168 'set' magic. See C<sv_catpvn_mg>.
3174 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3179 junk = SvPV_force(sv, tlen);
3180 SvGROW(sv, tlen + len + 1);
3183 Move(ptr,SvPVX(sv)+tlen,len,char);
3186 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3191 =for apidoc sv_catpvn_mg
3193 Like C<sv_catpvn>, but also handles 'set' magic.
3199 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3201 sv_catpvn(sv,ptr,len);
3206 =for apidoc sv_catsv
3208 Concatenates the string from SV C<ssv> onto the end of the string in SV
3209 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3215 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3221 if ((s = SvPV(sstr, len))) {
3222 if (DO_UTF8(sstr)) {
3223 sv_utf8_upgrade(dstr);
3224 sv_catpvn(dstr,s,len);
3228 sv_catpvn(dstr,s,len);
3233 =for apidoc sv_catsv_mg
3235 Like C<sv_catsv>, but also handles 'set' magic.
3241 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3243 sv_catsv(dstr,sstr);
3248 =for apidoc sv_catpv
3250 Concatenates the string onto the end of the string which is in the SV.
3251 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3257 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3259 register STRLEN len;
3265 junk = SvPV_force(sv, tlen);
3267 SvGROW(sv, tlen + len + 1);
3270 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3272 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3277 =for apidoc sv_catpv_mg
3279 Like C<sv_catpv>, but also handles 'set' magic.
3285 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3292 Perl_newSV(pTHX_ STRLEN len)
3298 sv_upgrade(sv, SVt_PV);
3299 SvGROW(sv, len + 1);
3304 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3307 =for apidoc sv_magic
3309 Adds magic to an SV.
3315 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3319 if (SvREADONLY(sv)) {
3320 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3321 Perl_croak(aTHX_ PL_no_modify);
3323 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3324 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3331 (void)SvUPGRADE(sv, SVt_PVMG);
3333 Newz(702,mg, 1, MAGIC);
3334 mg->mg_moremagic = SvMAGIC(sv);
3337 if (!obj || obj == sv || how == '#' || how == 'r')
3340 mg->mg_obj = SvREFCNT_inc(obj);
3341 mg->mg_flags |= MGf_REFCOUNTED;
3344 mg->mg_len = namlen;
3347 mg->mg_ptr = savepvn(name, namlen);
3348 else if (namlen == HEf_SVKEY)
3349 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3353 mg->mg_virtual = &PL_vtbl_sv;
3356 mg->mg_virtual = &PL_vtbl_amagic;
3359 mg->mg_virtual = &PL_vtbl_amagicelem;
3365 mg->mg_virtual = &PL_vtbl_bm;
3368 mg->mg_virtual = &PL_vtbl_regdata;
3371 mg->mg_virtual = &PL_vtbl_regdatum;
3374 mg->mg_virtual = &PL_vtbl_env;
3377 mg->mg_virtual = &PL_vtbl_fm;
3380 mg->mg_virtual = &PL_vtbl_envelem;
3383 mg->mg_virtual = &PL_vtbl_mglob;
3386 mg->mg_virtual = &PL_vtbl_isa;
3389 mg->mg_virtual = &PL_vtbl_isaelem;
3392 mg->mg_virtual = &PL_vtbl_nkeys;
3399 mg->mg_virtual = &PL_vtbl_dbline;
3403 mg->mg_virtual = &PL_vtbl_mutex;
3405 #endif /* USE_THREADS */
3406 #ifdef USE_LOCALE_COLLATE
3408 mg->mg_virtual = &PL_vtbl_collxfrm;
3410 #endif /* USE_LOCALE_COLLATE */
3412 mg->mg_virtual = &PL_vtbl_pack;
3416 mg->mg_virtual = &PL_vtbl_packelem;
3419 mg->mg_virtual = &PL_vtbl_regexp;
3422 mg->mg_virtual = &PL_vtbl_sig;
3425 mg->mg_virtual = &PL_vtbl_sigelem;
3428 mg->mg_virtual = &PL_vtbl_taint;
3432 mg->mg_virtual = &PL_vtbl_uvar;
3435 mg->mg_virtual = &PL_vtbl_vec;
3438 mg->mg_virtual = &PL_vtbl_substr;
3441 mg->mg_virtual = &PL_vtbl_defelem;
3444 mg->mg_virtual = &PL_vtbl_glob;
3447 mg->mg_virtual = &PL_vtbl_arylen;
3450 mg->mg_virtual = &PL_vtbl_pos;
3453 mg->mg_virtual = &PL_vtbl_backref;
3455 case '~': /* Reserved for use by extensions not perl internals. */
3456 /* Useful for attaching extension internal data to perl vars. */
3457 /* Note that multiple extensions may clash if magical scalars */
3458 /* etc holding private data from one are passed to another. */
3462 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3466 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3470 =for apidoc sv_unmagic
3472 Removes magic from an SV.
3478 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3482 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3485 for (mg = *mgp; mg; mg = *mgp) {
3486 if (mg->mg_type == type) {
3487 MGVTBL* vtbl = mg->mg_virtual;
3488 *mgp = mg->mg_moremagic;
3489 if (vtbl && vtbl->svt_free)
3490 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3491 if (mg->mg_ptr && mg->mg_type != 'g')
3492 if (mg->mg_len >= 0)
3493 Safefree(mg->mg_ptr);
3494 else if (mg->mg_len == HEf_SVKEY)
3495 SvREFCNT_dec((SV*)mg->mg_ptr);
3496 if (mg->mg_flags & MGf_REFCOUNTED)
3497 SvREFCNT_dec(mg->mg_obj);
3501 mgp = &mg->mg_moremagic;
3505 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3512 =for apidoc sv_rvweaken
3520 Perl_sv_rvweaken(pTHX_ SV *sv)
3523 if (!SvOK(sv)) /* let undefs pass */
3526 Perl_croak(aTHX_ "Can't weaken a nonreference");
3527 else if (SvWEAKREF(sv)) {
3528 if (ckWARN(WARN_MISC))
3529 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3533 sv_add_backref(tsv, sv);
3540 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3544 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3545 av = (AV*)mg->mg_obj;
3548 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3549 SvREFCNT_dec(av); /* for sv_magic */
3555 S_sv_del_backref(pTHX_ SV *sv)
3562 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3563 Perl_croak(aTHX_ "panic: del_backref");
3564 av = (AV *)mg->mg_obj;
3569 svp[i] = &PL_sv_undef; /* XXX */
3576 =for apidoc sv_insert
3578 Inserts a string at the specified offset/length within the SV. Similar to
3579 the Perl substr() function.
3585 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3589 register char *midend;
3590 register char *bigend;
3596 Perl_croak(aTHX_ "Can't modify non-existent substring");
3597 SvPV_force(bigstr, curlen);
3598 (void)SvPOK_only_UTF8(bigstr);
3599 if (offset + len > curlen) {
3600 SvGROW(bigstr, offset+len+1);
3601 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3602 SvCUR_set(bigstr, offset+len);
3606 i = littlelen - len;
3607 if (i > 0) { /* string might grow */
3608 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3609 mid = big + offset + len;
3610 midend = bigend = big + SvCUR(bigstr);
3613 while (midend > mid) /* shove everything down */
3614 *--bigend = *--midend;
3615 Move(little,big+offset,littlelen,char);
3621 Move(little,SvPVX(bigstr)+offset,len,char);
3626 big = SvPVX(bigstr);
3629 bigend = big + SvCUR(bigstr);
3631 if (midend > bigend)
3632 Perl_croak(aTHX_ "panic: sv_insert");
3634 if (mid - big > bigend - midend) { /* faster to shorten from end */
3636 Move(little, mid, littlelen,char);
3639 i = bigend - midend;
3641 Move(midend, mid, i,char);
3645 SvCUR_set(bigstr, mid - big);
3648 else if ((i = mid - big)) { /* faster from front */
3649 midend -= littlelen;
3651 sv_chop(bigstr,midend-i);
3656 Move(little, mid, littlelen,char);
3658 else if (littlelen) {
3659 midend -= littlelen;
3660 sv_chop(bigstr,midend);
3661 Move(little,midend,littlelen,char);
3664 sv_chop(bigstr,midend);
3670 =for apidoc sv_replace
3672 Make the first argument a copy of the second, then delete the original.
3678 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3680 U32 refcnt = SvREFCNT(sv);
3681 SV_CHECK_THINKFIRST(sv);
3682 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3683 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3684 if (SvMAGICAL(sv)) {
3688 sv_upgrade(nsv, SVt_PVMG);
3689 SvMAGIC(nsv) = SvMAGIC(sv);
3690 SvFLAGS(nsv) |= SvMAGICAL(sv);
3696 assert(!SvREFCNT(sv));
3697 StructCopy(nsv,sv,SV);
3698 SvREFCNT(sv) = refcnt;
3699 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3704 =for apidoc sv_clear
3706 Clear an SV, making it empty. Does not free the memory used by the SV
3713 Perl_sv_clear(pTHX_ register SV *sv)
3717 assert(SvREFCNT(sv) == 0);
3720 if (PL_defstash) { /* Still have a symbol table? */
3725 Zero(&tmpref, 1, SV);
3726 sv_upgrade(&tmpref, SVt_RV);
3728 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3729 SvREFCNT(&tmpref) = 1;
3732 stash = SvSTASH(sv);
3733 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3736 PUSHSTACKi(PERLSI_DESTROY);
3737 SvRV(&tmpref) = SvREFCNT_inc(sv);
3742 call_sv((SV*)GvCV(destructor),
3743 G_DISCARD|G_EVAL|G_KEEPERR);
3749 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3751 del_XRV(SvANY(&tmpref));
3754 if (PL_in_clean_objs)
3755 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3757 /* DESTROY gave object new lease on life */
3763 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3764 SvOBJECT_off(sv); /* Curse the object. */
3765 if (SvTYPE(sv) != SVt_PVIO)
3766 --PL_sv_objcount; /* XXX Might want something more general */
3769 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3772 switch (SvTYPE(sv)) {
3775 IoIFP(sv) != PerlIO_stdin() &&
3776 IoIFP(sv) != PerlIO_stdout() &&
3777 IoIFP(sv) != PerlIO_stderr())
3779 io_close((IO*)sv, FALSE);
3781 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3782 PerlDir_close(IoDIRP(sv));
3783 IoDIRP(sv) = (DIR*)NULL;
3784 Safefree(IoTOP_NAME(sv));
3785 Safefree(IoFMT_NAME(sv));
3786 Safefree(IoBOTTOM_NAME(sv));
3801 SvREFCNT_dec(LvTARG(sv));
3805 Safefree(GvNAME(sv));
3806 /* cannot decrease stash refcount yet, as we might recursively delete
3807 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3808 of stash until current sv is completely gone.
3809 -- JohnPC, 27 Mar 1998 */
3810 stash = GvSTASH(sv);
3816 (void)SvOOK_off(sv);
3824 SvREFCNT_dec(SvRV(sv));
3826 else if (SvPVX(sv) && SvLEN(sv))
3827 Safefree(SvPVX(sv));
3828 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3829 unsharepvn(SvPVX(sv),SvUTF8(sv)?-SvCUR(sv):SvCUR(sv),SvUVX(sv));
3841 switch (SvTYPE(sv)) {
3857 del_XPVIV(SvANY(sv));
3860 del_XPVNV(SvANY(sv));
3863 del_XPVMG(SvANY(sv));
3866 del_XPVLV(SvANY(sv));
3869 del_XPVAV(SvANY(sv));
3872 del_XPVHV(SvANY(sv));
3875 del_XPVCV(SvANY(sv));
3878 del_XPVGV(SvANY(sv));
3879 /* code duplication for increased performance. */
3880 SvFLAGS(sv) &= SVf_BREAK;
3881 SvFLAGS(sv) |= SVTYPEMASK;
3882 /* decrease refcount of the stash that owns this GV, if any */
3884 SvREFCNT_dec(stash);
3885 return; /* not break, SvFLAGS reset already happened */
3887 del_XPVBM(SvANY(sv));
3890 del_XPVFM(SvANY(sv));
3893 del_XPVIO(SvANY(sv));
3896 SvFLAGS(sv) &= SVf_BREAK;
3897 SvFLAGS(sv) |= SVTYPEMASK;
3901 Perl_sv_newref(pTHX_ SV *sv)
3904 ATOMIC_INC(SvREFCNT(sv));
3911 Free the memory used by an SV.
3917 Perl_sv_free(pTHX_ SV *sv)
3919 int refcount_is_zero;
3923 if (SvREFCNT(sv) == 0) {
3924 if (SvFLAGS(sv) & SVf_BREAK)
3926 if (PL_in_clean_all) /* All is fair */
3928 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3929 /* make sure SvREFCNT(sv)==0 happens very seldom */
3930 SvREFCNT(sv) = (~(U32)0)/2;
3933 if (ckWARN_d(WARN_INTERNAL))
3934 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3937 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3938 if (!refcount_is_zero)
3942 if (ckWARN_d(WARN_DEBUGGING))
3943 Perl_warner(aTHX_ WARN_DEBUGGING,
3944 "Attempt to free temp prematurely: SV 0x%"UVxf,
3949 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3950 /* make sure SvREFCNT(sv)==0 happens very seldom */
3951 SvREFCNT(sv) = (~(U32)0)/2;
3962 Returns the length of the string in the SV. See also C<SvCUR>.
3968 Perl_sv_len(pTHX_ register SV *sv)
3977 len = mg_length(sv);
3979 junk = SvPV(sv, len);
3984 =for apidoc sv_len_utf8
3986 Returns the number of characters in the string in an SV, counting wide
3987 UTF8 bytes as a single character.
3993 Perl_sv_len_utf8(pTHX_ register SV *sv)
4000 return mg_length(sv);
4005 U8 *s = (U8*)SvPV(sv, len);
4007 return Perl_utf8_length(aTHX_ s, s + len);
4012 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4017 I32 uoffset = *offsetp;
4023 start = s = (U8*)SvPV(sv, len);
4025 while (s < send && uoffset--)
4029 *offsetp = s - start;
4033 while (s < send && ulen--)
4043 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4052 s = (U8*)SvPV(sv, len);
4054 Perl_croak(aTHX_ "panic: bad byte offset");
4055 send = s + *offsetp;
4062 if (ckWARN_d(WARN_UTF8))
4063 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4073 Returns a boolean indicating whether the strings in the two SVs are
4080 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4087 bool pv1tmp = FALSE;
4088 bool pv2tmp = FALSE;
4095 pv1 = SvPV(sv1, cur1);
4102 pv2 = SvPV(sv2, cur2);
4104 /* do not utf8ize the comparands as a side-effect */
4105 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4107 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4111 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4117 eq = memEQ(pv1, pv2, cur1);
4130 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4131 string in C<sv1> is less than, equal to, or greater than the string in
4138 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4143 bool pv1tmp = FALSE;
4144 bool pv2tmp = FALSE;
4151 pv1 = SvPV(sv1, cur1);
4158 pv2 = SvPV(sv2, cur2);
4160 /* do not utf8ize the comparands as a side-effect */
4161 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4163 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4167 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4173 cmp = cur2 ? -1 : 0;
4177 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4180 cmp = retval < 0 ? -1 : 1;
4181 } else if (cur1 == cur2) {
4184 cmp = cur1 < cur2 ? -1 : 1;
4197 =for apidoc sv_cmp_locale
4199 Compares the strings in two SVs in a locale-aware manner. See
4206 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4208 #ifdef USE_LOCALE_COLLATE
4214 if (PL_collation_standard)
4218 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4220 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4222 if (!pv1 || !len1) {
4233 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4236 return retval < 0 ? -1 : 1;
4239 * When the result of collation is equality, that doesn't mean
4240 * that there are no differences -- some locales exclude some
4241 * characters from consideration. So to avoid false equalities,
4242 * we use the raw string as a tiebreaker.
4248 #endif /* USE_LOCALE_COLLATE */
4250 return sv_cmp(sv1, sv2);
4253 #ifdef USE_LOCALE_COLLATE
4255 * Any scalar variable may carry an 'o' magic that contains the
4256 * scalar data of the variable transformed to such a format that
4257 * a normal memory comparison can be used to compare the data
4258 * according to the locale settings.
4261 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4265 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4266 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4271 Safefree(mg->mg_ptr);
4273 if ((xf = mem_collxfrm(s, len, &xlen))) {
4274 if (SvREADONLY(sv)) {
4277 return xf + sizeof(PL_collation_ix);
4280 sv_magic(sv, 0, 'o', 0, 0);
4281 mg = mg_find(sv, 'o');
4294 if (mg && mg->mg_ptr) {
4296 return mg->mg_ptr + sizeof(PL_collation_ix);
4304 #endif /* USE_LOCALE_COLLATE */
4309 Get a line from the filehandle and store it into the SV, optionally
4310 appending to the currently-stored string.
4316 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4320 register STDCHAR rslast;
4321 register STDCHAR *bp;
4325 SV_CHECK_THINKFIRST(sv);
4326 (void)SvUPGRADE(sv, SVt_PV);
4330 if (RsSNARF(PL_rs)) {
4334 else if (RsRECORD(PL_rs)) {
4335 I32 recsize, bytesread;
4338 /* Grab the size of the record we're getting */
4339 recsize = SvIV(SvRV(PL_rs));
4340 (void)SvPOK_only(sv); /* Validate pointer */
4341 buffer = SvGROW(sv, recsize + 1);
4344 /* VMS wants read instead of fread, because fread doesn't respect */
4345 /* RMS record boundaries. This is not necessarily a good thing to be */
4346 /* doing, but we've got no other real choice */
4347 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4349 bytesread = PerlIO_read(fp, buffer, recsize);
4351 SvCUR_set(sv, bytesread);
4352 buffer[bytesread] = '\0';
4353 if (PerlIO_isutf8(fp))
4357 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4359 else if (RsPARA(PL_rs)) {
4364 /* Get $/ i.e. PL_rs into same encoding as stream wants */
4365 if (PerlIO_isutf8(fp)) {
4366 rsptr = SvPVutf8(PL_rs, rslen);
4369 if (SvUTF8(PL_rs)) {
4370 if (!sv_utf8_downgrade(PL_rs, TRUE)) {
4371 Perl_croak(aTHX_ "Wide character in $/");
4374 rsptr = SvPV(PL_rs, rslen);
4378 rslast = rslen ? rsptr[rslen - 1] : '\0';
4380 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4381 do { /* to make sure file boundaries work right */
4384 i = PerlIO_getc(fp);
4388 PerlIO_ungetc(fp,i);
4394 /* See if we know enough about I/O mechanism to cheat it ! */
4396 /* This used to be #ifdef test - it is made run-time test for ease
4397 of abstracting out stdio interface. One call should be cheap
4398 enough here - and may even be a macro allowing compile
4402 if (PerlIO_fast_gets(fp)) {
4405 * We're going to steal some values from the stdio struct
4406 * and put EVERYTHING in the innermost loop into registers.
4408 register STDCHAR *ptr;
4412 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4413 /* An ungetc()d char is handled separately from the regular
4414 * buffer, so we getc() it back out and stuff it in the buffer.
4416 i = PerlIO_getc(fp);
4417 if (i == EOF) return 0;
4418 *(--((*fp)->_ptr)) = (unsigned char) i;
4422 /* Here is some breathtakingly efficient cheating */
4424 cnt = PerlIO_get_cnt(fp); /* get count into register */
4425 (void)SvPOK_only(sv); /* validate pointer */
4426 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4427 if (cnt > 80 && SvLEN(sv) > append) {
4428 shortbuffered = cnt - SvLEN(sv) + append + 1;
4429 cnt -= shortbuffered;
4433 /* remember that cnt can be negative */
4434 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4439 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4440 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4441 DEBUG_P(PerlIO_printf(Perl_debug_log,
4442 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4443 DEBUG_P(PerlIO_printf(Perl_debug_log,
4444 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4445 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4446 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4451 while (cnt > 0) { /* this | eat */
4453 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4454 goto thats_all_folks; /* screams | sed :-) */
4458 Copy(ptr, bp, cnt, char); /* this | eat */
4459 bp += cnt; /* screams | dust */
4460 ptr += cnt; /* louder | sed :-) */
4465 if (shortbuffered) { /* oh well, must extend */
4466 cnt = shortbuffered;
4468 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4470 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4471 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4475 DEBUG_P(PerlIO_printf(Perl_debug_log,
4476 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4477 PTR2UV(ptr),(long)cnt));
4478 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4479 DEBUG_P(PerlIO_printf(Perl_debug_log,
4480 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4481 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4482 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4483 /* This used to call 'filbuf' in stdio form, but as that behaves like
4484 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4485 another abstraction. */
4486 i = PerlIO_getc(fp); /* get more characters */
4487 DEBUG_P(PerlIO_printf(Perl_debug_log,
4488 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4489 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4490 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4491 cnt = PerlIO_get_cnt(fp);
4492 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4493 DEBUG_P(PerlIO_printf(Perl_debug_log,
4494 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4496 if (i == EOF) /* all done for ever? */
4497 goto thats_really_all_folks;
4499 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4501 SvGROW(sv, bpx + cnt + 2);
4502 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4504 *bp++ = i; /* store character from PerlIO_getc */
4506 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4507 goto thats_all_folks;
4511 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4512 memNE((char*)bp - rslen, rsptr, rslen))
4513 goto screamer; /* go back to the fray */
4514 thats_really_all_folks:
4516 cnt += shortbuffered;
4517 DEBUG_P(PerlIO_printf(Perl_debug_log,
4518 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4519 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4520 DEBUG_P(PerlIO_printf(Perl_debug_log,
4521 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4522 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4523 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4525 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4526 DEBUG_P(PerlIO_printf(Perl_debug_log,
4527 "Screamer: done, len=%ld, string=|%.*s|\n",
4528 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4533 /*The big, slow, and stupid way */
4536 /* Need to work around EPOC SDK features */
4537 /* On WINS: MS VC5 generates calls to _chkstk, */
4538 /* if a `large' stack frame is allocated */
4539 /* gcc on MARM does not generate calls like these */
4545 register STDCHAR *bpe = buf + sizeof(buf);
4547 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4548 ; /* keep reading */
4552 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4553 /* Accomodate broken VAXC compiler, which applies U8 cast to
4554 * both args of ?: operator, causing EOF to change into 255
4556 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4560 sv_catpvn(sv, (char *) buf, cnt);
4562 sv_setpvn(sv, (char *) buf, cnt);
4564 if (i != EOF && /* joy */
4566 SvCUR(sv) < rslen ||
4567 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4571 * If we're reading from a TTY and we get a short read,
4572 * indicating that the user hit his EOF character, we need
4573 * to notice it now, because if we try to read from the TTY
4574 * again, the EOF condition will disappear.
4576 * The comparison of cnt to sizeof(buf) is an optimization
4577 * that prevents unnecessary calls to feof().
4581 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4586 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4587 while (i != EOF) { /* to make sure file boundaries work right */
4588 i = PerlIO_getc(fp);
4590 PerlIO_ungetc(fp,i);
4596 if (PerlIO_isutf8(fp))
4601 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4608 Auto-increment of the value in the SV.
4614 Perl_sv_inc(pTHX_ register SV *sv)
4623 if (SvTHINKFIRST(sv)) {
4624 if (SvREADONLY(sv)) {
4625 if (PL_curcop != &PL_compiling)
4626 Perl_croak(aTHX_ PL_no_modify);
4630 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4632 i = PTR2IV(SvRV(sv));
4637 flags = SvFLAGS(sv);
4638 if (flags & SVp_NOK) {
4639 (void)SvNOK_only(sv);
4643 if (flags & SVp_IOK) {
4645 if (SvUVX(sv) == UV_MAX)
4646 sv_setnv(sv, (NV)UV_MAX + 1.0);
4648 (void)SvIOK_only_UV(sv);
4651 if (SvIVX(sv) == IV_MAX)
4652 sv_setnv(sv, (NV)IV_MAX + 1.0);
4654 (void)SvIOK_only(sv);
4660 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4661 if ((flags & SVTYPEMASK) < SVt_PVNV)
4662 sv_upgrade(sv, SVt_IV);
4663 (void)SvIOK_only(sv);
4668 while (isALPHA(*d)) d++;
4669 while (isDIGIT(*d)) d++;
4671 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4675 while (d >= SvPVX(sv)) {
4683 /* MKS: The original code here died if letters weren't consecutive.
4684 * at least it didn't have to worry about non-C locales. The
4685 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4686 * arranged in order (although not consecutively) and that only
4687 * [A-Za-z] are accepted by isALPHA in the C locale.
4689 if (*d != 'z' && *d != 'Z') {
4690 do { ++*d; } while (!isALPHA(*d));
4693 *(d--) -= 'z' - 'a';
4698 *(d--) -= 'z' - 'a' + 1;
4702 /* oh,oh, the number grew */
4703 SvGROW(sv, SvCUR(sv) + 2);
4705 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4716 Auto-decrement of the value in the SV.
4722 Perl_sv_dec(pTHX_ register SV *sv)
4730 if (SvTHINKFIRST(sv)) {
4731 if (SvREADONLY(sv)) {
4732 if (PL_curcop != &PL_compiling)
4733 Perl_croak(aTHX_ PL_no_modify);
4737 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4739 i = PTR2IV(SvRV(sv));
4744 flags = SvFLAGS(sv);
4745 if (flags & SVp_NOK) {
4747 (void)SvNOK_only(sv);
4750 if (flags & SVp_IOK) {
4752 if (SvUVX(sv) == 0) {
4753 (void)SvIOK_only(sv);
4757 (void)SvIOK_only_UV(sv);
4761 if (SvIVX(sv) == IV_MIN)
4762 sv_setnv(sv, (NV)IV_MIN - 1.0);
4764 (void)SvIOK_only(sv);
4770 if (!(flags & SVp_POK)) {
4771 if ((flags & SVTYPEMASK) < SVt_PVNV)
4772 sv_upgrade(sv, SVt_NV);
4774 (void)SvNOK_only(sv);
4777 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4781 =for apidoc sv_mortalcopy
4783 Creates a new SV which is a copy of the original SV. The new SV is marked
4789 /* Make a string that will exist for the duration of the expression
4790 * evaluation. Actually, it may have to last longer than that, but
4791 * hopefully we won't free it until it has been assigned to a
4792 * permanent location. */
4795 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4800 sv_setsv(sv,oldstr);
4802 PL_tmps_stack[++PL_tmps_ix] = sv;
4808 =for apidoc sv_newmortal
4810 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4816 Perl_sv_newmortal(pTHX)
4821 SvFLAGS(sv) = SVs_TEMP;
4823 PL_tmps_stack[++PL_tmps_ix] = sv;
4828 =for apidoc sv_2mortal
4830 Marks an SV as mortal. The SV will be destroyed when the current context
4836 /* same thing without the copying */
4839 Perl_sv_2mortal(pTHX_ register SV *sv)
4843 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4846 PL_tmps_stack[++PL_tmps_ix] = sv;
4854 Creates a new SV and copies a string into it. The reference count for the
4855 SV is set to 1. If C<len> is zero, Perl will compute the length using
4856 strlen(). For efficiency, consider using C<newSVpvn> instead.
4862 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4869 sv_setpvn(sv,s,len);
4874 =for apidoc newSVpvn
4876 Creates a new SV and copies a string into it. The reference count for the
4877 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4878 string. You are responsible for ensuring that the source string is at least
4885 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4890 sv_setpvn(sv,s,len);
4895 =for apidoc newSVpvn_share
4897 Creates a new SV and populates it with a string from
4898 the string table. Turns on READONLY and FAKE.
4899 The idea here is that as string table is used for shared hash
4900 keys these strings will have SvPVX == HeKEY and hash lookup
4901 will avoid string compare.
4907 Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash)
4910 bool is_utf8 = FALSE;
4916 PERL_HASH(hash, src, len);
4918 sv_upgrade(sv, SVt_PVIV);
4919 SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash);
4931 #if defined(PERL_IMPLICIT_CONTEXT)
4933 Perl_newSVpvf_nocontext(const char* pat, ...)
4938 va_start(args, pat);
4939 sv = vnewSVpvf(pat, &args);
4946 =for apidoc newSVpvf
4948 Creates a new SV an initialize it with the string formatted like
4955 Perl_newSVpvf(pTHX_ const char* pat, ...)
4959 va_start(args, pat);
4960 sv = vnewSVpvf(pat, &args);
4966 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4970 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4977 Creates a new SV and copies a floating point value into it.
4978 The reference count for the SV is set to 1.
4984 Perl_newSVnv(pTHX_ NV n)
4996 Creates a new SV and copies an integer into it. The reference count for the
5003 Perl_newSViv(pTHX_ IV i)
5015 Creates a new SV and copies an unsigned integer into it.
5016 The reference count for the SV is set to 1.
5022 Perl_newSVuv(pTHX_ UV u)
5032 =for apidoc newRV_noinc
5034 Creates an RV wrapper for an SV. The reference count for the original
5035 SV is B<not> incremented.
5041 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5046 sv_upgrade(sv, SVt_RV);
5053 /* newRV_inc is #defined to newRV in sv.h */
5055 Perl_newRV(pTHX_ SV *tmpRef)
5057 return newRV_noinc(SvREFCNT_inc(tmpRef));
5063 Creates a new SV which is an exact duplicate of the original SV.
5068 /* make an exact duplicate of old */
5071 Perl_newSVsv(pTHX_ register SV *old)
5077 if (SvTYPE(old) == SVTYPEMASK) {
5078 if (ckWARN_d(WARN_INTERNAL))
5079 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5094 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5102 char todo[PERL_UCHAR_MAX+1];
5107 if (!*s) { /* reset ?? searches */
5108 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5109 pm->op_pmdynflags &= ~PMdf_USED;
5114 /* reset variables */
5116 if (!HvARRAY(stash))
5119 Zero(todo, 256, char);
5121 i = (unsigned char)*s;
5125 max = (unsigned char)*s++;
5126 for ( ; i <= max; i++) {
5129 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5130 for (entry = HvARRAY(stash)[i];
5132 entry = HeNEXT(entry))
5134 if (!todo[(U8)*HeKEY(entry)])
5136 gv = (GV*)HeVAL(entry);
5138 if (SvTHINKFIRST(sv)) {
5139 if (!SvREADONLY(sv) && SvROK(sv))
5144 if (SvTYPE(sv) >= SVt_PV) {
5146 if (SvPVX(sv) != Nullch)
5153 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5155 #ifdef USE_ENVIRON_ARRAY
5157 environ[0] = Nullch;
5166 Perl_sv_2io(pTHX_ SV *sv)
5172 switch (SvTYPE(sv)) {
5180 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5184 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5186 return sv_2io(SvRV(sv));
5187 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5193 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5200 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5207 return *gvp = Nullgv, Nullcv;
5208 switch (SvTYPE(sv)) {
5227 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5228 tryAMAGICunDEREF(to_cv);
5231 if (SvTYPE(sv) == SVt_PVCV) {
5240 Perl_croak(aTHX_ "Not a subroutine reference");
5245 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5251 if (lref && !GvCVu(gv)) {
5254 tmpsv = NEWSV(704,0);
5255 gv_efullname3(tmpsv, gv, Nullch);
5256 /* XXX this is probably not what they think they're getting.
5257 * It has the same effect as "sub name;", i.e. just a forward
5259 newSUB(start_subparse(FALSE, 0),
5260 newSVOP(OP_CONST, 0, tmpsv),
5265 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5274 Returns true if the SV has a true value by Perl's rules.
5280 Perl_sv_true(pTHX_ register SV *sv)
5286 if ((tXpv = (XPV*)SvANY(sv)) &&
5287 (tXpv->xpv_cur > 1 ||
5288 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5295 return SvIVX(sv) != 0;
5298 return SvNVX(sv) != 0.0;
5300 return sv_2bool(sv);
5306 Perl_sv_iv(pTHX_ register SV *sv)
5310 return (IV)SvUVX(sv);
5317 Perl_sv_uv(pTHX_ register SV *sv)
5322 return (UV)SvIVX(sv);
5328 Perl_sv_nv(pTHX_ register SV *sv)
5336 Perl_sv_pv(pTHX_ SV *sv)
5343 return sv_2pv(sv, &n_a);
5347 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5353 return sv_2pv(sv, lp);
5357 =for apidoc sv_pvn_force
5359 Get a sensible string out of the SV somehow.
5365 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5369 if (SvTHINKFIRST(sv) && !SvROK(sv))
5370 sv_force_normal(sv);
5376 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5377 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5378 PL_op_name[PL_op->op_type]);
5382 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5387 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5388 SvGROW(sv, len + 1);
5389 Move(s,SvPVX(sv),len,char);
5394 SvPOK_on(sv); /* validate pointer */
5396 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5397 PTR2UV(sv),SvPVX(sv)));
5404 Perl_sv_pvbyte(pTHX_ SV *sv)
5410 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5412 return sv_pvn(sv,lp);
5416 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5418 return sv_pvn_force(sv,lp);
5422 Perl_sv_pvutf8(pTHX_ SV *sv)
5424 sv_utf8_upgrade(sv);
5429 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5431 sv_utf8_upgrade(sv);
5432 return sv_pvn(sv,lp);
5436 =for apidoc sv_pvutf8n_force
5438 Get a sensible UTF8-encoded string out of the SV somehow. See
5445 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5447 sv_utf8_upgrade(sv);
5448 return sv_pvn_force(sv,lp);
5452 =for apidoc sv_reftype
5454 Returns a string describing what the SV is a reference to.
5460 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5462 if (ob && SvOBJECT(sv))
5463 return HvNAME(SvSTASH(sv));
5465 switch (SvTYPE(sv)) {
5479 case SVt_PVLV: return "LVALUE";
5480 case SVt_PVAV: return "ARRAY";
5481 case SVt_PVHV: return "HASH";
5482 case SVt_PVCV: return "CODE";
5483 case SVt_PVGV: return "GLOB";
5484 case SVt_PVFM: return "FORMAT";
5485 case SVt_PVIO: return "IO";
5486 default: return "UNKNOWN";
5492 =for apidoc sv_isobject
5494 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5495 object. If the SV is not an RV, or if the object is not blessed, then this
5502 Perl_sv_isobject(pTHX_ SV *sv)
5519 Returns a boolean indicating whether the SV is blessed into the specified
5520 class. This does not check for subtypes; use C<sv_derived_from> to verify
5521 an inheritance relationship.
5527 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5539 return strEQ(HvNAME(SvSTASH(sv)), name);
5545 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5546 it will be upgraded to one. If C<classname> is non-null then the new SV will
5547 be blessed in the specified package. The new SV is returned and its
5548 reference count is 1.
5554 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5560 SV_CHECK_THINKFIRST(rv);
5563 if (SvTYPE(rv) >= SVt_PVMG) {
5564 U32 refcnt = SvREFCNT(rv);
5568 SvREFCNT(rv) = refcnt;
5571 if (SvTYPE(rv) < SVt_RV)
5572 sv_upgrade(rv, SVt_RV);
5573 else if (SvTYPE(rv) > SVt_RV) {
5574 (void)SvOOK_off(rv);
5575 if (SvPVX(rv) && SvLEN(rv))
5576 Safefree(SvPVX(rv));
5586 HV* stash = gv_stashpv(classname, TRUE);
5587 (void)sv_bless(rv, stash);
5593 =for apidoc sv_setref_pv
5595 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5596 argument will be upgraded to an RV. That RV will be modified to point to
5597 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5598 into the SV. The C<classname> argument indicates the package for the
5599 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5600 will be returned and will have a reference count of 1.
5602 Do not use with other Perl types such as HV, AV, SV, CV, because those
5603 objects will become corrupted by the pointer copy process.
5605 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5611 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5614 sv_setsv(rv, &PL_sv_undef);
5618 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5623 =for apidoc sv_setref_iv
5625 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5626 argument will be upgraded to an RV. That RV will be modified to point to
5627 the new SV. The C<classname> argument indicates the package for the
5628 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5629 will be returned and will have a reference count of 1.
5635 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5637 sv_setiv(newSVrv(rv,classname), iv);
5642 =for apidoc sv_setref_nv
5644 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5645 argument will be upgraded to an RV. That RV will be modified to point to
5646 the new SV. The C<classname> argument indicates the package for the
5647 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5648 will be returned and will have a reference count of 1.
5654 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5656 sv_setnv(newSVrv(rv,classname), nv);
5661 =for apidoc sv_setref_pvn
5663 Copies a string into a new SV, optionally blessing the SV. The length of the
5664 string must be specified with C<n>. The C<rv> argument will be upgraded to
5665 an RV. That RV will be modified to point to the new SV. The C<classname>
5666 argument indicates the package for the blessing. Set C<classname> to
5667 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5668 a reference count of 1.
5670 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5676 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5678 sv_setpvn(newSVrv(rv,classname), pv, n);
5683 =for apidoc sv_bless
5685 Blesses an SV into a specified package. The SV must be an RV. The package
5686 must be designated by its stash (see C<gv_stashpv()>). The reference count
5687 of the SV is unaffected.
5693 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5697 Perl_croak(aTHX_ "Can't bless non-reference value");
5699 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5700 if (SvREADONLY(tmpRef))
5701 Perl_croak(aTHX_ PL_no_modify);
5702 if (SvOBJECT(tmpRef)) {
5703 if (SvTYPE(tmpRef) != SVt_PVIO)
5705 SvREFCNT_dec(SvSTASH(tmpRef));
5708 SvOBJECT_on(tmpRef);
5709 if (SvTYPE(tmpRef) != SVt_PVIO)
5711 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5712 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5723 S_sv_unglob(pTHX_ SV *sv)
5727 assert(SvTYPE(sv) == SVt_PVGV);
5732 SvREFCNT_dec(GvSTASH(sv));
5733 GvSTASH(sv) = Nullhv;
5735 sv_unmagic(sv, '*');
5736 Safefree(GvNAME(sv));
5739 /* need to keep SvANY(sv) in the right arena */
5740 xpvmg = new_XPVMG();
5741 StructCopy(SvANY(sv), xpvmg, XPVMG);
5742 del_XPVGV(SvANY(sv));
5745 SvFLAGS(sv) &= ~SVTYPEMASK;
5746 SvFLAGS(sv) |= SVt_PVMG;
5750 =for apidoc sv_unref_flags
5752 Unsets the RV status of the SV, and decrements the reference count of
5753 whatever was being referenced by the RV. This can almost be thought of
5754 as a reversal of C<newSVrv>. The C<cflags> argument can contain
5755 C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented
5756 (otherwise the decrementing is conditional on the reference count being
5757 different from one or the reference being a readonly SV).
5764 Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags)
5768 if (SvWEAKREF(sv)) {
5776 if (SvREFCNT(rv) != 1 || SvREADONLY(rv) || flags) /* SV_IMMEDIATE_UNREF */
5778 else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */
5779 sv_2mortal(rv); /* Schedule for freeing later */
5783 =for apidoc sv_unref
5785 Unsets the RV status of the SV, and decrements the reference count of
5786 whatever was being referenced by the RV. This can almost be thought of
5787 as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
5788 being zero. See C<SvROK_off>.
5794 Perl_sv_unref(pTHX_ SV *sv)
5796 sv_unref_flags(sv, 0);
5800 Perl_sv_taint(pTHX_ SV *sv)
5802 sv_magic((sv), Nullsv, 't', Nullch, 0);
5806 Perl_sv_untaint(pTHX_ SV *sv)
5808 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5809 MAGIC *mg = mg_find(sv, 't');
5816 Perl_sv_tainted(pTHX_ SV *sv)
5818 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5819 MAGIC *mg = mg_find(sv, 't');
5820 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5827 =for apidoc sv_setpviv
5829 Copies an integer into the given SV, also updating its string value.
5830 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5836 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5838 char buf[TYPE_CHARS(UV)];
5840 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5842 sv_setpvn(sv, ptr, ebuf - ptr);
5847 =for apidoc sv_setpviv_mg
5849 Like C<sv_setpviv>, but also handles 'set' magic.
5855 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5857 char buf[TYPE_CHARS(UV)];
5859 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5861 sv_setpvn(sv, ptr, ebuf - ptr);
5865 #if defined(PERL_IMPLICIT_CONTEXT)
5867 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5871 va_start(args, pat);
5872 sv_vsetpvf(sv, pat, &args);
5878 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5882 va_start(args, pat);
5883 sv_vsetpvf_mg(sv, pat, &args);
5889 =for apidoc sv_setpvf
5891 Processes its arguments like C<sprintf> and sets an SV to the formatted
5892 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5898 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5901 va_start(args, pat);
5902 sv_vsetpvf(sv, pat, &args);
5907 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5909 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5913 =for apidoc sv_setpvf_mg
5915 Like C<sv_setpvf>, but also handles 'set' magic.
5921 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5924 va_start(args, pat);
5925 sv_vsetpvf_mg(sv, pat, &args);
5930 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5932 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5936 #if defined(PERL_IMPLICIT_CONTEXT)
5938 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5942 va_start(args, pat);
5943 sv_vcatpvf(sv, pat, &args);
5948 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5952 va_start(args, pat);
5953 sv_vcatpvf_mg(sv, pat, &args);
5959 =for apidoc sv_catpvf
5961 Processes its arguments like C<sprintf> and appends the formatted output
5962 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5963 typically be called after calling this function to handle 'set' magic.
5969 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5972 va_start(args, pat);
5973 sv_vcatpvf(sv, pat, &args);
5978 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5980 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5984 =for apidoc sv_catpvf_mg
5986 Like C<sv_catpvf>, but also handles 'set' magic.
5992 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5995 va_start(args, pat);
5996 sv_vcatpvf_mg(sv, pat, &args);
6001 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6003 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6008 =for apidoc sv_vsetpvfn
6010 Works like C<vcatpvfn> but copies the text into the SV instead of
6017 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6019 sv_setpvn(sv, "", 0);
6020 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
6024 =for apidoc sv_vcatpvfn
6026 Processes its arguments like C<vsprintf> and appends the formatted output
6027 to an SV. Uses an array of SVs if the C style variable argument list is
6028 missing (NULL). When running with taint checks enabled, indicates via
6029 C<maybe_tainted> if results are untrustworthy (often due to the use of
6036 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6043 static char nullstr[] = "(null)";
6046 /* no matter what, this is a string now */
6047 (void)SvPV_force(sv, origlen);
6049 /* special-case "", "%s", and "%_" */
6052 if (patlen == 2 && pat[0] == '%') {
6056 char *s = va_arg(*args, char*);
6057 sv_catpv(sv, s ? s : nullstr);
6059 else if (svix < svmax) {
6060 sv_catsv(sv, *svargs);
6061 if (DO_UTF8(*svargs))
6067 argsv = va_arg(*args, SV*);
6068 sv_catsv(sv, argsv);
6073 /* See comment on '_' below */
6078 patend = (char*)pat + patlen;
6079 for (p = (char*)pat; p < patend; p = q) {
6082 bool vectorize = FALSE;
6089 bool has_precis = FALSE;
6091 bool is_utf = FALSE;
6094 U8 utf8buf[UTF8_MAXLEN+1];
6095 STRLEN esignlen = 0;
6097 char *eptr = Nullch;
6099 /* Times 4: a decimal digit takes more than 3 binary digits.
6100 * NV_DIG: mantissa takes than many decimal digits.
6101 * Plus 32: Playing safe. */
6102 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6103 /* large enough for "%#.#f" --chip */
6104 /* what about long double NVs? --jhi */
6107 U8 *vecstr = Null(U8*);
6119 STRLEN dotstrlen = 1;
6120 I32 epix = 0; /* explicit parameter index */
6121 I32 ewix = 0; /* explicit width index */
6122 bool asterisk = FALSE;
6124 for (q = p; q < patend && *q != '%'; ++q) ;
6126 sv_catpvn(sv, p, q - p);
6155 case '*': /* printf("%*vX",":",$ipv6addr) */
6160 vecsv = va_arg(*args, SV*);
6161 else if (svix < svmax)
6162 vecsv = svargs[svix++];
6165 dotstr = SvPVx(vecsv,dotstrlen);
6193 case '1': case '2': case '3':
6194 case '4': case '5': case '6':
6195 case '7': case '8': case '9':
6198 width = width * 10 + (*q++ - '0');
6200 if (asterisk && ewix == 0) {
6205 } else if (epix == 0) {
6217 i = va_arg(*args, int);
6219 i = (ewix ? ewix <= svmax : svix < svmax) ?
6220 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6222 width = (i < 0) ? -i : i;
6231 i = va_arg(*args, int);
6233 i = (ewix ? ewix <= svmax : svix < svmax)
6234 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6235 precis = (i < 0) ? 0 : i;
6241 precis = precis * 10 + (*q++ - '0');
6248 vecsv = va_arg(*args, SV*);
6249 vecstr = (U8*)SvPVx(vecsv,veclen);
6250 utf = DO_UTF8(vecsv);
6252 else if (epix ? epix <= svmax : svix < svmax) {
6253 vecsv = svargs[epix ? epix-1 : svix++];
6254 vecstr = (U8*)SvPVx(vecsv,veclen);
6255 utf = DO_UTF8(vecsv);
6266 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6277 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6278 if (*(q + 1) == 'l') { /* lld, llf */
6305 uv = va_arg(*args, int);
6307 uv = (epix ? epix <= svmax : svix < svmax) ?
6308 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6309 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6310 eptr = (char*)utf8buf;
6311 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6323 eptr = va_arg(*args, char*);
6325 #ifdef MACOS_TRADITIONAL
6326 /* On MacOS, %#s format is used for Pascal strings */
6331 elen = strlen(eptr);
6334 elen = sizeof nullstr - 1;
6337 else if (epix ? epix <= svmax : svix < svmax) {
6338 argsv = svargs[epix ? epix-1 : svix++];
6339 eptr = SvPVx(argsv, elen);
6340 if (DO_UTF8(argsv)) {
6341 if (has_precis && precis < elen) {
6343 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6346 if (width) { /* fudge width (can't fudge elen) */
6347 width += elen - sv_len_utf8(argsv);
6356 * The "%_" hack might have to be changed someday,
6357 * if ISO or ANSI decide to use '_' for something.
6358 * So we keep it hidden from users' code.
6362 argsv = va_arg(*args,SV*);
6363 eptr = SvPVx(argsv, elen);
6369 if (has_precis && elen > precis)
6379 uv = PTR2UV(va_arg(*args, void*));
6381 uv = (epix ? epix <= svmax : svix < svmax) ?
6382 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6402 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6412 case 'h': iv = (short)va_arg(*args, int); break;
6413 default: iv = va_arg(*args, int); break;
6414 case 'l': iv = va_arg(*args, long); break;
6415 case 'V': iv = va_arg(*args, IV); break;
6417 case 'q': iv = va_arg(*args, Quad_t); break;
6422 iv = (epix ? epix <= svmax : svix < svmax) ?
6423 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6425 case 'h': iv = (short)iv; break;
6427 case 'l': iv = (long)iv; break;
6430 case 'q': iv = (Quad_t)iv; break;
6437 esignbuf[esignlen++] = plus;
6441 esignbuf[esignlen++] = '-';
6485 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6495 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6496 default: uv = va_arg(*args, unsigned); break;
6497 case 'l': uv = va_arg(*args, unsigned long); break;
6498 case 'V': uv = va_arg(*args, UV); break;
6500 case 'q': uv = va_arg(*args, Quad_t); break;
6505 uv = (epix ? epix <= svmax : svix < svmax) ?
6506 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6508 case 'h': uv = (unsigned short)uv; break;
6510 case 'l': uv = (unsigned long)uv; break;
6513 case 'q': uv = (Quad_t)uv; break;
6519 eptr = ebuf + sizeof ebuf;
6525 p = (char*)((c == 'X')
6526 ? "0123456789ABCDEF" : "0123456789abcdef");
6532 esignbuf[esignlen++] = '0';
6533 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6539 *--eptr = '0' + dig;
6541 if (alt && *eptr != '0')
6547 *--eptr = '0' + dig;
6550 esignbuf[esignlen++] = '0';
6551 esignbuf[esignlen++] = 'b';
6554 default: /* it had better be ten or less */
6555 #if defined(PERL_Y2KWARN)
6556 if (ckWARN(WARN_Y2K)) {
6558 char *s = SvPV(sv,n);
6559 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6560 && (n == 2 || !isDIGIT(s[n-3])))
6562 Perl_warner(aTHX_ WARN_Y2K,
6563 "Possible Y2K bug: %%%c %s",
6564 c, "format string following '19'");
6570 *--eptr = '0' + dig;
6571 } while (uv /= base);
6574 elen = (ebuf + sizeof ebuf) - eptr;
6577 zeros = precis - elen;
6578 else if (precis == 0 && elen == 1 && *eptr == '0')
6583 /* FLOATING POINT */
6586 c = 'f'; /* maybe %F isn't supported here */
6592 /* This is evil, but floating point is even more evil */
6596 nv = va_arg(*args, NV);
6598 nv = (epix ? epix <= svmax : svix < svmax) ?
6599 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6602 if (c != 'e' && c != 'E') {
6604 (void)Perl_frexp(nv, &i);
6605 if (i == PERL_INT_MIN)
6606 Perl_die(aTHX_ "panic: frexp");
6608 need = BIT_DIGITS(i);
6610 need += has_precis ? precis : 6; /* known default */
6614 need += 20; /* fudge factor */
6615 if (PL_efloatsize < need) {
6616 Safefree(PL_efloatbuf);
6617 PL_efloatsize = need + 20; /* more fudge */
6618 New(906, PL_efloatbuf, PL_efloatsize, char);
6619 PL_efloatbuf[0] = '\0';
6622 eptr = ebuf + sizeof ebuf;
6625 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6627 /* Copy the one or more characters in a long double
6628 * format before the 'base' ([efgEFG]) character to
6629 * the format string. */
6630 static char const prifldbl[] = PERL_PRIfldbl;
6631 char const *p = prifldbl + sizeof(prifldbl) - 3;
6632 while (p >= prifldbl) { *--eptr = *p--; }
6637 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6642 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6654 /* No taint. Otherwise we are in the strange situation
6655 * where printf() taints but print($float) doesn't.
6657 (void)sprintf(PL_efloatbuf, eptr, nv);
6659 eptr = PL_efloatbuf;
6660 elen = strlen(PL_efloatbuf);
6667 i = SvCUR(sv) - origlen;
6670 case 'h': *(va_arg(*args, short*)) = i; break;
6671 default: *(va_arg(*args, int*)) = i; break;
6672 case 'l': *(va_arg(*args, long*)) = i; break;
6673 case 'V': *(va_arg(*args, IV*)) = i; break;
6675 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6679 else if (epix ? epix <= svmax : svix < svmax)
6680 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6681 continue; /* not "break" */
6688 if (!args && ckWARN(WARN_PRINTF) &&
6689 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6690 SV *msg = sv_newmortal();
6691 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6692 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6695 Perl_sv_catpvf(aTHX_ msg,
6696 "\"%%%c\"", c & 0xFF);
6698 Perl_sv_catpvf(aTHX_ msg,
6699 "\"%%\\%03"UVof"\"",
6702 sv_catpv(msg, "end of string");
6703 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6706 /* output mangled stuff ... */
6712 /* ... right here, because formatting flags should not apply */
6713 SvGROW(sv, SvCUR(sv) + elen + 1);
6715 memcpy(p, eptr, elen);
6718 SvCUR(sv) = p - SvPVX(sv);
6719 continue; /* not "break" */
6722 have = esignlen + zeros + elen;
6723 need = (have > width ? have : width);
6726 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6728 if (esignlen && fill == '0') {
6729 for (i = 0; i < esignlen; i++)
6733 memset(p, fill, gap);
6736 if (esignlen && fill != '0') {
6737 for (i = 0; i < esignlen; i++)
6741 for (i = zeros; i; i--)
6745 memcpy(p, eptr, elen);
6749 memset(p, ' ', gap);
6754 memcpy(p, dotstr, dotstrlen);
6758 vectorize = FALSE; /* done iterating over vecstr */
6763 SvCUR(sv) = p - SvPVX(sv);
6771 #if defined(USE_ITHREADS)
6773 #if defined(USE_THREADS)
6774 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6777 #ifndef GpREFCNT_inc
6778 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6782 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6783 #define av_dup(s) (AV*)sv_dup((SV*)s)
6784 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6785 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6786 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6787 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6788 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6789 #define io_dup(s) (IO*)sv_dup((SV*)s)
6790 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6791 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6792 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6793 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6794 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6797 Perl_re_dup(pTHX_ REGEXP *r)
6799 /* XXX fix when pmop->op_pmregexp becomes shared */
6800 return ReREFCNT_inc(r);
6804 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6808 return (PerlIO*)NULL;
6810 /* look for it in the table first */
6811 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6815 /* create anew and remember what it is */
6816 ret = PerlIO_fdupopen(aTHX_ fp);
6817 ptr_table_store(PL_ptr_table, fp, ret);
6822 Perl_dirp_dup(pTHX_ DIR *dp)
6831 Perl_gp_dup(pTHX_ GP *gp)
6836 /* look for it in the table first */
6837 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6841 /* create anew and remember what it is */
6842 Newz(0, ret, 1, GP);
6843 ptr_table_store(PL_ptr_table, gp, ret);
6846 ret->gp_refcnt = 0; /* must be before any other dups! */
6847 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6848 ret->gp_io = io_dup_inc(gp->gp_io);
6849 ret->gp_form = cv_dup_inc(gp->gp_form);
6850 ret->gp_av = av_dup_inc(gp->gp_av);
6851 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6852 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6853 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6854 ret->gp_cvgen = gp->gp_cvgen;
6855 ret->gp_flags = gp->gp_flags;
6856 ret->gp_line = gp->gp_line;
6857 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6862 Perl_mg_dup(pTHX_ MAGIC *mg)
6864 MAGIC *mgret = (MAGIC*)NULL;
6867 return (MAGIC*)NULL;
6868 /* look for it in the table first */
6869 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6873 for (; mg; mg = mg->mg_moremagic) {
6875 Newz(0, nmg, 1, MAGIC);
6879 mgprev->mg_moremagic = nmg;
6880 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6881 nmg->mg_private = mg->mg_private;
6882 nmg->mg_type = mg->mg_type;
6883 nmg->mg_flags = mg->mg_flags;
6884 if (mg->mg_type == 'r') {
6885 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6888 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6889 ? sv_dup_inc(mg->mg_obj)
6890 : sv_dup(mg->mg_obj);
6892 nmg->mg_len = mg->mg_len;
6893 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6894 if (mg->mg_ptr && mg->mg_type != 'g') {
6895 if (mg->mg_len >= 0) {
6896 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6897 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6898 AMT *amtp = (AMT*)mg->mg_ptr;
6899 AMT *namtp = (AMT*)nmg->mg_ptr;
6901 for (i = 1; i < NofAMmeth; i++) {
6902 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6906 else if (mg->mg_len == HEf_SVKEY)
6907 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6915 Perl_ptr_table_new(pTHX)
6918 Newz(0, tbl, 1, PTR_TBL_t);
6921 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6926 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6928 PTR_TBL_ENT_t *tblent;
6929 UV hash = PTR2UV(sv);
6931 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6932 for (; tblent; tblent = tblent->next) {
6933 if (tblent->oldval == sv)
6934 return tblent->newval;
6940 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6942 PTR_TBL_ENT_t *tblent, **otblent;
6943 /* XXX this may be pessimal on platforms where pointers aren't good
6944 * hash values e.g. if they grow faster in the most significant
6946 UV hash = PTR2UV(oldv);
6950 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6951 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6952 if (tblent->oldval == oldv) {
6953 tblent->newval = newv;
6958 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6959 tblent->oldval = oldv;
6960 tblent->newval = newv;
6961 tblent->next = *otblent;
6964 if (i && tbl->tbl_items > tbl->tbl_max)
6965 ptr_table_split(tbl);
6969 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6971 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6972 UV oldsize = tbl->tbl_max + 1;
6973 UV newsize = oldsize * 2;
6976 Renew(ary, newsize, PTR_TBL_ENT_t*);
6977 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6978 tbl->tbl_max = --newsize;
6980 for (i=0; i < oldsize; i++, ary++) {
6981 PTR_TBL_ENT_t **curentp, **entp, *ent;
6984 curentp = ary + oldsize;
6985 for (entp = ary, ent = *ary; ent; ent = *entp) {
6986 if ((newsize & PTR2UV(ent->oldval)) != i) {
6988 ent->next = *curentp;
7003 Perl_sv_dup(pTHX_ SV *sstr)
7007 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
7009 /* look for it in the table first */
7010 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
7014 /* create anew and remember what it is */
7016 ptr_table_store(PL_ptr_table, sstr, dstr);
7019 SvFLAGS(dstr) = SvFLAGS(sstr);
7020 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
7021 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7024 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7025 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7026 PL_watch_pvx, SvPVX(sstr));
7029 switch (SvTYPE(sstr)) {
7034 SvANY(dstr) = new_XIV();
7035 SvIVX(dstr) = SvIVX(sstr);
7038 SvANY(dstr) = new_XNV();
7039 SvNVX(dstr) = SvNVX(sstr);
7042 SvANY(dstr) = new_XRV();
7043 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7046 SvANY(dstr) = new_XPV();
7047 SvCUR(dstr) = SvCUR(sstr);
7048 SvLEN(dstr) = SvLEN(sstr);
7050 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7051 else if (SvPVX(sstr) && SvLEN(sstr))
7052 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7054 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7057 SvANY(dstr) = new_XPVIV();
7058 SvCUR(dstr) = SvCUR(sstr);
7059 SvLEN(dstr) = SvLEN(sstr);
7060 SvIVX(dstr) = SvIVX(sstr);
7062 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7063 else if (SvPVX(sstr) && SvLEN(sstr))
7064 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7066 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7069 SvANY(dstr) = new_XPVNV();
7070 SvCUR(dstr) = SvCUR(sstr);
7071 SvLEN(dstr) = SvLEN(sstr);
7072 SvIVX(dstr) = SvIVX(sstr);
7073 SvNVX(dstr) = SvNVX(sstr);
7075 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7076 else if (SvPVX(sstr) && SvLEN(sstr))
7077 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7079 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7082 SvANY(dstr) = new_XPVMG();
7083 SvCUR(dstr) = SvCUR(sstr);
7084 SvLEN(dstr) = SvLEN(sstr);
7085 SvIVX(dstr) = SvIVX(sstr);
7086 SvNVX(dstr) = SvNVX(sstr);
7087 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7088 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7090 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7091 else if (SvPVX(sstr) && SvLEN(sstr))
7092 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7094 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7097 SvANY(dstr) = new_XPVBM();
7098 SvCUR(dstr) = SvCUR(sstr);
7099 SvLEN(dstr) = SvLEN(sstr);
7100 SvIVX(dstr) = SvIVX(sstr);
7101 SvNVX(dstr) = SvNVX(sstr);
7102 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7103 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7105 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7106 else if (SvPVX(sstr) && SvLEN(sstr))
7107 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7109 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7110 BmRARE(dstr) = BmRARE(sstr);
7111 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7112 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7115 SvANY(dstr) = new_XPVLV();
7116 SvCUR(dstr) = SvCUR(sstr);
7117 SvLEN(dstr) = SvLEN(sstr);
7118 SvIVX(dstr) = SvIVX(sstr);
7119 SvNVX(dstr) = SvNVX(sstr);
7120 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7121 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7123 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7124 else if (SvPVX(sstr) && SvLEN(sstr))
7125 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7127 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7128 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7129 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7130 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7131 LvTYPE(dstr) = LvTYPE(sstr);
7134 SvANY(dstr) = new_XPVGV();
7135 SvCUR(dstr) = SvCUR(sstr);
7136 SvLEN(dstr) = SvLEN(sstr);
7137 SvIVX(dstr) = SvIVX(sstr);
7138 SvNVX(dstr) = SvNVX(sstr);
7139 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7140 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7142 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7143 else if (SvPVX(sstr) && SvLEN(sstr))
7144 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7146 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7147 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7148 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7149 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7150 GvFLAGS(dstr) = GvFLAGS(sstr);
7151 GvGP(dstr) = gp_dup(GvGP(sstr));
7152 (void)GpREFCNT_inc(GvGP(dstr));
7155 SvANY(dstr) = new_XPVIO();
7156 SvCUR(dstr) = SvCUR(sstr);
7157 SvLEN(dstr) = SvLEN(sstr);
7158 SvIVX(dstr) = SvIVX(sstr);
7159 SvNVX(dstr) = SvNVX(sstr);
7160 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7161 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7163 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7164 else if (SvPVX(sstr) && SvLEN(sstr))
7165 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7167 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7168 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7169 if (IoOFP(sstr) == IoIFP(sstr))
7170 IoOFP(dstr) = IoIFP(dstr);
7172 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7173 /* PL_rsfp_filters entries have fake IoDIRP() */
7174 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7175 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7177 IoDIRP(dstr) = IoDIRP(sstr);
7178 IoLINES(dstr) = IoLINES(sstr);
7179 IoPAGE(dstr) = IoPAGE(sstr);
7180 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7181 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7182 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7183 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7184 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7185 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7186 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7187 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7188 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7189 IoTYPE(dstr) = IoTYPE(sstr);
7190 IoFLAGS(dstr) = IoFLAGS(sstr);
7193 SvANY(dstr) = new_XPVAV();
7194 SvCUR(dstr) = SvCUR(sstr);
7195 SvLEN(dstr) = SvLEN(sstr);
7196 SvIVX(dstr) = SvIVX(sstr);
7197 SvNVX(dstr) = SvNVX(sstr);
7198 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7199 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7200 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7201 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7202 if (AvARRAY((AV*)sstr)) {
7203 SV **dst_ary, **src_ary;
7204 SSize_t items = AvFILLp((AV*)sstr) + 1;
7206 src_ary = AvARRAY((AV*)sstr);
7207 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7208 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7209 SvPVX(dstr) = (char*)dst_ary;
7210 AvALLOC((AV*)dstr) = dst_ary;
7211 if (AvREAL((AV*)sstr)) {
7213 *dst_ary++ = sv_dup_inc(*src_ary++);
7217 *dst_ary++ = sv_dup(*src_ary++);
7219 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7220 while (items-- > 0) {
7221 *dst_ary++ = &PL_sv_undef;
7225 SvPVX(dstr) = Nullch;
7226 AvALLOC((AV*)dstr) = (SV**)NULL;
7230 SvANY(dstr) = new_XPVHV();
7231 SvCUR(dstr) = SvCUR(sstr);
7232 SvLEN(dstr) = SvLEN(sstr);
7233 SvIVX(dstr) = SvIVX(sstr);
7234 SvNVX(dstr) = SvNVX(sstr);
7235 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7236 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7237 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7238 if (HvARRAY((HV*)sstr)) {
7240 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7241 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7242 Newz(0, dxhv->xhv_array,
7243 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7244 while (i <= sxhv->xhv_max) {
7245 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7246 !!HvSHAREKEYS(sstr));
7249 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7252 SvPVX(dstr) = Nullch;
7253 HvEITER((HV*)dstr) = (HE*)NULL;
7255 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7256 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7259 SvANY(dstr) = new_XPVFM();
7260 FmLINES(dstr) = FmLINES(sstr);
7264 SvANY(dstr) = new_XPVCV();
7266 SvCUR(dstr) = SvCUR(sstr);
7267 SvLEN(dstr) = SvLEN(sstr);
7268 SvIVX(dstr) = SvIVX(sstr);
7269 SvNVX(dstr) = SvNVX(sstr);
7270 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7271 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7272 if (SvPVX(sstr) && SvLEN(sstr))
7273 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7275 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7276 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7277 CvSTART(dstr) = CvSTART(sstr);
7278 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7279 CvXSUB(dstr) = CvXSUB(sstr);
7280 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7281 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7282 CvDEPTH(dstr) = CvDEPTH(sstr);
7283 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7284 /* XXX padlists are real, but pretend to be not */
7285 AvREAL_on(CvPADLIST(sstr));
7286 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7287 AvREAL_off(CvPADLIST(sstr));
7288 AvREAL_off(CvPADLIST(dstr));
7291 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7292 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7293 CvFLAGS(dstr) = CvFLAGS(sstr);
7296 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7300 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7307 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7312 return (PERL_CONTEXT*)NULL;
7314 /* look for it in the table first */
7315 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7319 /* create anew and remember what it is */
7320 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7321 ptr_table_store(PL_ptr_table, cxs, ncxs);
7324 PERL_CONTEXT *cx = &cxs[ix];
7325 PERL_CONTEXT *ncx = &ncxs[ix];
7326 ncx->cx_type = cx->cx_type;
7327 if (CxTYPE(cx) == CXt_SUBST) {
7328 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7331 ncx->blk_oldsp = cx->blk_oldsp;
7332 ncx->blk_oldcop = cx->blk_oldcop;
7333 ncx->blk_oldretsp = cx->blk_oldretsp;
7334 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7335 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7336 ncx->blk_oldpm = cx->blk_oldpm;
7337 ncx->blk_gimme = cx->blk_gimme;
7338 switch (CxTYPE(cx)) {
7340 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7341 ? cv_dup_inc(cx->blk_sub.cv)
7342 : cv_dup(cx->blk_sub.cv));
7343 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7344 ? av_dup_inc(cx->blk_sub.argarray)
7346 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7347 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7348 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7349 ncx->blk_sub.lval = cx->blk_sub.lval;
7352 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7353 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7354 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7355 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7356 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7359 ncx->blk_loop.label = cx->blk_loop.label;
7360 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7361 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7362 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7363 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7364 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7365 ? cx->blk_loop.iterdata
7366 : gv_dup((GV*)cx->blk_loop.iterdata));
7367 ncx->blk_loop.oldcurpad
7368 = (SV**)ptr_table_fetch(PL_ptr_table,
7369 cx->blk_loop.oldcurpad);
7370 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7371 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7372 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7373 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7374 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7377 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7378 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7379 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7380 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7393 Perl_si_dup(pTHX_ PERL_SI *si)
7398 return (PERL_SI*)NULL;
7400 /* look for it in the table first */
7401 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7405 /* create anew and remember what it is */
7406 Newz(56, nsi, 1, PERL_SI);
7407 ptr_table_store(PL_ptr_table, si, nsi);
7409 nsi->si_stack = av_dup_inc(si->si_stack);
7410 nsi->si_cxix = si->si_cxix;
7411 nsi->si_cxmax = si->si_cxmax;
7412 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7413 nsi->si_type = si->si_type;
7414 nsi->si_prev = si_dup(si->si_prev);
7415 nsi->si_next = si_dup(si->si_next);
7416 nsi->si_markoff = si->si_markoff;
7421 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7422 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7423 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7424 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7425 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7426 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7427 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7428 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7429 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7430 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7431 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7432 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7435 #define pv_dup_inc(p) SAVEPV(p)
7436 #define pv_dup(p) SAVEPV(p)
7437 #define svp_dup_inc(p,pp) any_dup(p,pp)
7440 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7447 /* look for it in the table first */
7448 ret = ptr_table_fetch(PL_ptr_table, v);
7452 /* see if it is part of the interpreter structure */
7453 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7454 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7462 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7464 ANY *ss = proto_perl->Tsavestack;
7465 I32 ix = proto_perl->Tsavestack_ix;
7466 I32 max = proto_perl->Tsavestack_max;
7479 void (*dptr) (void*);
7480 void (*dxptr) (pTHXo_ void*);
7483 Newz(54, nss, max, ANY);
7489 case SAVEt_ITEM: /* normal string */
7490 sv = (SV*)POPPTR(ss,ix);
7491 TOPPTR(nss,ix) = sv_dup_inc(sv);
7492 sv = (SV*)POPPTR(ss,ix);
7493 TOPPTR(nss,ix) = sv_dup_inc(sv);
7495 case SAVEt_SV: /* scalar reference */
7496 sv = (SV*)POPPTR(ss,ix);
7497 TOPPTR(nss,ix) = sv_dup_inc(sv);
7498 gv = (GV*)POPPTR(ss,ix);
7499 TOPPTR(nss,ix) = gv_dup_inc(gv);
7501 case SAVEt_GENERIC_PVREF: /* generic char* */
7502 c = (char*)POPPTR(ss,ix);
7503 TOPPTR(nss,ix) = pv_dup(c);
7504 ptr = POPPTR(ss,ix);
7505 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7507 case SAVEt_GENERIC_SVREF: /* generic sv */
7508 case SAVEt_SVREF: /* scalar reference */
7509 sv = (SV*)POPPTR(ss,ix);
7510 TOPPTR(nss,ix) = sv_dup_inc(sv);
7511 ptr = POPPTR(ss,ix);
7512 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7514 case SAVEt_AV: /* array reference */
7515 av = (AV*)POPPTR(ss,ix);
7516 TOPPTR(nss,ix) = av_dup_inc(av);
7517 gv = (GV*)POPPTR(ss,ix);
7518 TOPPTR(nss,ix) = gv_dup(gv);
7520 case SAVEt_HV: /* hash reference */
7521 hv = (HV*)POPPTR(ss,ix);
7522 TOPPTR(nss,ix) = hv_dup_inc(hv);
7523 gv = (GV*)POPPTR(ss,ix);
7524 TOPPTR(nss,ix) = gv_dup(gv);
7526 case SAVEt_INT: /* int reference */
7527 ptr = POPPTR(ss,ix);
7528 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7529 intval = (int)POPINT(ss,ix);
7530 TOPINT(nss,ix) = intval;
7532 case SAVEt_LONG: /* long reference */
7533 ptr = POPPTR(ss,ix);
7534 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7535 longval = (long)POPLONG(ss,ix);
7536 TOPLONG(nss,ix) = longval;
7538 case SAVEt_I32: /* I32 reference */
7539 case SAVEt_I16: /* I16 reference */
7540 case SAVEt_I8: /* I8 reference */
7541 ptr = POPPTR(ss,ix);
7542 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7546 case SAVEt_IV: /* IV reference */
7547 ptr = POPPTR(ss,ix);
7548 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7552 case SAVEt_SPTR: /* SV* reference */
7553 ptr = POPPTR(ss,ix);
7554 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7555 sv = (SV*)POPPTR(ss,ix);
7556 TOPPTR(nss,ix) = sv_dup(sv);
7558 case SAVEt_VPTR: /* random* reference */
7559 ptr = POPPTR(ss,ix);
7560 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7561 ptr = POPPTR(ss,ix);
7562 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7564 case SAVEt_PPTR: /* char* reference */
7565 ptr = POPPTR(ss,ix);
7566 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7567 c = (char*)POPPTR(ss,ix);
7568 TOPPTR(nss,ix) = pv_dup(c);
7570 case SAVEt_HPTR: /* HV* reference */
7571 ptr = POPPTR(ss,ix);
7572 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7573 hv = (HV*)POPPTR(ss,ix);
7574 TOPPTR(nss,ix) = hv_dup(hv);
7576 case SAVEt_APTR: /* AV* reference */
7577 ptr = POPPTR(ss,ix);
7578 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7579 av = (AV*)POPPTR(ss,ix);
7580 TOPPTR(nss,ix) = av_dup(av);
7583 gv = (GV*)POPPTR(ss,ix);
7584 TOPPTR(nss,ix) = gv_dup(gv);
7586 case SAVEt_GP: /* scalar reference */
7587 gp = (GP*)POPPTR(ss,ix);
7588 TOPPTR(nss,ix) = gp = gp_dup(gp);
7589 (void)GpREFCNT_inc(gp);
7590 gv = (GV*)POPPTR(ss,ix);
7591 TOPPTR(nss,ix) = gv_dup_inc(c);
7592 c = (char*)POPPTR(ss,ix);
7593 TOPPTR(nss,ix) = pv_dup(c);
7600 sv = (SV*)POPPTR(ss,ix);
7601 TOPPTR(nss,ix) = sv_dup_inc(sv);
7604 ptr = POPPTR(ss,ix);
7605 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7606 /* these are assumed to be refcounted properly */
7607 switch (((OP*)ptr)->op_type) {
7614 TOPPTR(nss,ix) = ptr;
7619 TOPPTR(nss,ix) = Nullop;
7624 TOPPTR(nss,ix) = Nullop;
7627 c = (char*)POPPTR(ss,ix);
7628 TOPPTR(nss,ix) = pv_dup_inc(c);
7631 longval = POPLONG(ss,ix);
7632 TOPLONG(nss,ix) = longval;
7635 hv = (HV*)POPPTR(ss,ix);
7636 TOPPTR(nss,ix) = hv_dup_inc(hv);
7637 c = (char*)POPPTR(ss,ix);
7638 TOPPTR(nss,ix) = pv_dup_inc(c);
7642 case SAVEt_DESTRUCTOR:
7643 ptr = POPPTR(ss,ix);
7644 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7645 dptr = POPDPTR(ss,ix);
7646 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7648 case SAVEt_DESTRUCTOR_X:
7649 ptr = POPPTR(ss,ix);
7650 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7651 dxptr = POPDXPTR(ss,ix);
7652 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7654 case SAVEt_REGCONTEXT:
7660 case SAVEt_STACK_POS: /* Position on Perl stack */
7664 case SAVEt_AELEM: /* array element */
7665 sv = (SV*)POPPTR(ss,ix);
7666 TOPPTR(nss,ix) = sv_dup_inc(sv);
7669 av = (AV*)POPPTR(ss,ix);
7670 TOPPTR(nss,ix) = av_dup_inc(av);
7672 case SAVEt_HELEM: /* hash element */
7673 sv = (SV*)POPPTR(ss,ix);
7674 TOPPTR(nss,ix) = sv_dup_inc(sv);
7675 sv = (SV*)POPPTR(ss,ix);
7676 TOPPTR(nss,ix) = sv_dup_inc(sv);
7677 hv = (HV*)POPPTR(ss,ix);
7678 TOPPTR(nss,ix) = hv_dup_inc(hv);
7681 ptr = POPPTR(ss,ix);
7682 TOPPTR(nss,ix) = ptr;
7689 av = (AV*)POPPTR(ss,ix);
7690 TOPPTR(nss,ix) = av_dup(av);
7693 longval = (long)POPLONG(ss,ix);
7694 TOPLONG(nss,ix) = longval;
7695 ptr = POPPTR(ss,ix);
7696 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7697 sv = (SV*)POPPTR(ss,ix);
7698 TOPPTR(nss,ix) = sv_dup(sv);
7701 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7713 perl_clone(PerlInterpreter *proto_perl, UV flags)
7716 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7719 #ifdef PERL_IMPLICIT_SYS
7720 return perl_clone_using(proto_perl, flags,
7722 proto_perl->IMemShared,
7723 proto_perl->IMemParse,
7733 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7734 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7735 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7736 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7737 struct IPerlDir* ipD, struct IPerlSock* ipS,
7738 struct IPerlProc* ipP)
7740 /* XXX many of the string copies here can be optimized if they're
7741 * constants; they need to be allocated as common memory and just
7742 * their pointers copied. */
7746 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7748 PERL_SET_THX(pPerl);
7749 # else /* !PERL_OBJECT */
7750 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7751 PERL_SET_THX(my_perl);
7754 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7759 # else /* !DEBUGGING */
7760 Zero(my_perl, 1, PerlInterpreter);
7761 # endif /* DEBUGGING */
7765 PL_MemShared = ipMS;
7773 # endif /* PERL_OBJECT */
7774 #else /* !PERL_IMPLICIT_SYS */
7776 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7777 PERL_SET_THX(my_perl);
7780 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7785 # else /* !DEBUGGING */
7786 Zero(my_perl, 1, PerlInterpreter);
7787 # endif /* DEBUGGING */
7788 #endif /* PERL_IMPLICIT_SYS */
7791 PL_xiv_arenaroot = NULL;
7793 PL_xnv_arenaroot = NULL;
7795 PL_xrv_arenaroot = NULL;
7797 PL_xpv_arenaroot = NULL;
7799 PL_xpviv_arenaroot = NULL;
7800 PL_xpviv_root = NULL;
7801 PL_xpvnv_arenaroot = NULL;
7802 PL_xpvnv_root = NULL;
7803 PL_xpvcv_arenaroot = NULL;
7804 PL_xpvcv_root = NULL;
7805 PL_xpvav_arenaroot = NULL;
7806 PL_xpvav_root = NULL;
7807 PL_xpvhv_arenaroot = NULL;
7808 PL_xpvhv_root = NULL;
7809 PL_xpvmg_arenaroot = NULL;
7810 PL_xpvmg_root = NULL;
7811 PL_xpvlv_arenaroot = NULL;
7812 PL_xpvlv_root = NULL;
7813 PL_xpvbm_arenaroot = NULL;
7814 PL_xpvbm_root = NULL;
7815 PL_he_arenaroot = NULL;
7817 PL_nice_chunk = NULL;
7818 PL_nice_chunk_size = 0;
7821 PL_sv_root = Nullsv;
7822 PL_sv_arenaroot = Nullsv;
7824 PL_debug = proto_perl->Idebug;
7826 /* create SV map for pointer relocation */
7827 PL_ptr_table = ptr_table_new();
7829 /* initialize these special pointers as early as possible */
7830 SvANY(&PL_sv_undef) = NULL;
7831 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7832 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7833 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7836 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7838 SvANY(&PL_sv_no) = new_XPVNV();
7840 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7841 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7842 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7843 SvCUR(&PL_sv_no) = 0;
7844 SvLEN(&PL_sv_no) = 1;
7845 SvNVX(&PL_sv_no) = 0;
7846 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7849 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7851 SvANY(&PL_sv_yes) = new_XPVNV();
7853 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7854 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7855 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7856 SvCUR(&PL_sv_yes) = 1;
7857 SvLEN(&PL_sv_yes) = 2;
7858 SvNVX(&PL_sv_yes) = 1;
7859 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7861 /* create shared string table */
7862 PL_strtab = newHV();
7863 HvSHAREKEYS_off(PL_strtab);
7864 hv_ksplit(PL_strtab, 512);
7865 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7867 PL_compiling = proto_perl->Icompiling;
7868 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7869 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7870 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7871 if (!specialWARN(PL_compiling.cop_warnings))
7872 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7873 if (!specialCopIO(PL_compiling.cop_io))
7874 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
7875 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7877 /* pseudo environmental stuff */
7878 PL_origargc = proto_perl->Iorigargc;
7880 New(0, PL_origargv, i+1, char*);
7881 PL_origargv[i] = '\0';
7883 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7885 PL_envgv = gv_dup(proto_perl->Ienvgv);
7886 PL_incgv = gv_dup(proto_perl->Iincgv);
7887 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7888 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7889 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7890 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7893 PL_minus_c = proto_perl->Iminus_c;
7894 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7895 PL_localpatches = proto_perl->Ilocalpatches;
7896 PL_splitstr = proto_perl->Isplitstr;
7897 PL_preprocess = proto_perl->Ipreprocess;
7898 PL_minus_n = proto_perl->Iminus_n;
7899 PL_minus_p = proto_perl->Iminus_p;
7900 PL_minus_l = proto_perl->Iminus_l;
7901 PL_minus_a = proto_perl->Iminus_a;
7902 PL_minus_F = proto_perl->Iminus_F;
7903 PL_doswitches = proto_perl->Idoswitches;
7904 PL_dowarn = proto_perl->Idowarn;
7905 PL_doextract = proto_perl->Idoextract;
7906 PL_sawampersand = proto_perl->Isawampersand;
7907 PL_unsafe = proto_perl->Iunsafe;
7908 PL_inplace = SAVEPV(proto_perl->Iinplace);
7909 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7910 PL_perldb = proto_perl->Iperldb;
7911 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7913 /* magical thingies */
7914 /* XXX time(&PL_basetime) when asked for? */
7915 PL_basetime = proto_perl->Ibasetime;
7916 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7918 PL_maxsysfd = proto_perl->Imaxsysfd;
7919 PL_multiline = proto_perl->Imultiline;
7920 PL_statusvalue = proto_perl->Istatusvalue;
7922 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7925 /* shortcuts to various I/O objects */
7926 PL_stdingv = gv_dup(proto_perl->Istdingv);
7927 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7928 PL_defgv = gv_dup(proto_perl->Idefgv);
7929 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7930 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7931 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7933 /* shortcuts to regexp stuff */
7934 PL_replgv = gv_dup(proto_perl->Ireplgv);
7936 /* shortcuts to misc objects */
7937 PL_errgv = gv_dup(proto_perl->Ierrgv);
7939 /* shortcuts to debugging objects */
7940 PL_DBgv = gv_dup(proto_perl->IDBgv);
7941 PL_DBline = gv_dup(proto_perl->IDBline);
7942 PL_DBsub = gv_dup(proto_perl->IDBsub);
7943 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7944 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7945 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7946 PL_lineary = av_dup(proto_perl->Ilineary);
7947 PL_dbargs = av_dup(proto_perl->Idbargs);
7950 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7951 PL_curstash = hv_dup(proto_perl->Tcurstash);
7952 PL_debstash = hv_dup(proto_perl->Idebstash);
7953 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7954 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7956 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7957 PL_endav = av_dup_inc(proto_perl->Iendav);
7958 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7959 PL_initav = av_dup_inc(proto_perl->Iinitav);
7961 PL_sub_generation = proto_perl->Isub_generation;
7963 /* funky return mechanisms */
7964 PL_forkprocess = proto_perl->Iforkprocess;
7966 /* subprocess state */
7967 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7969 /* internal state */
7970 PL_tainting = proto_perl->Itainting;
7971 PL_maxo = proto_perl->Imaxo;
7972 if (proto_perl->Iop_mask)
7973 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7975 PL_op_mask = Nullch;
7977 /* current interpreter roots */
7978 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7979 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7980 PL_main_start = proto_perl->Imain_start;
7981 PL_eval_root = proto_perl->Ieval_root;
7982 PL_eval_start = proto_perl->Ieval_start;
7984 /* runtime control stuff */
7985 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7986 PL_copline = proto_perl->Icopline;
7988 PL_filemode = proto_perl->Ifilemode;
7989 PL_lastfd = proto_perl->Ilastfd;
7990 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7993 PL_gensym = proto_perl->Igensym;
7994 PL_preambled = proto_perl->Ipreambled;
7995 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7996 PL_laststatval = proto_perl->Ilaststatval;
7997 PL_laststype = proto_perl->Ilaststype;
7998 PL_mess_sv = Nullsv;
8000 PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv);
8001 PL_ofmt = SAVEPV(proto_perl->Iofmt);
8003 /* interpreter atexit processing */
8004 PL_exitlistlen = proto_perl->Iexitlistlen;
8005 if (PL_exitlistlen) {
8006 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8007 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8010 PL_exitlist = (PerlExitListEntry*)NULL;
8011 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
8013 PL_profiledata = NULL;
8014 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
8015 /* PL_rsfp_filters entries have fake IoDIRP() */
8016 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
8018 PL_compcv = cv_dup(proto_perl->Icompcv);
8019 PL_comppad = av_dup(proto_perl->Icomppad);
8020 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
8021 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
8022 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8023 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8024 proto_perl->Tcurpad);
8026 #ifdef HAVE_INTERP_INTERN
8027 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8030 /* more statics moved here */
8031 PL_generation = proto_perl->Igeneration;
8032 PL_DBcv = cv_dup(proto_perl->IDBcv);
8034 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8035 PL_in_clean_all = proto_perl->Iin_clean_all;
8037 PL_uid = proto_perl->Iuid;
8038 PL_euid = proto_perl->Ieuid;
8039 PL_gid = proto_perl->Igid;
8040 PL_egid = proto_perl->Iegid;
8041 PL_nomemok = proto_perl->Inomemok;
8042 PL_an = proto_perl->Ian;
8043 PL_cop_seqmax = proto_perl->Icop_seqmax;
8044 PL_op_seqmax = proto_perl->Iop_seqmax;
8045 PL_evalseq = proto_perl->Ievalseq;
8046 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8047 PL_origalen = proto_perl->Iorigalen;
8048 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8049 PL_osname = SAVEPV(proto_perl->Iosname);
8050 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8051 PL_sighandlerp = proto_perl->Isighandlerp;
8054 PL_runops = proto_perl->Irunops;
8056 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8059 PL_cshlen = proto_perl->Icshlen;
8060 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8063 PL_lex_state = proto_perl->Ilex_state;
8064 PL_lex_defer = proto_perl->Ilex_defer;
8065 PL_lex_expect = proto_perl->Ilex_expect;
8066 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8067 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8068 PL_lex_starts = proto_perl->Ilex_starts;
8069 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8070 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8071 PL_lex_op = proto_perl->Ilex_op;
8072 PL_lex_inpat = proto_perl->Ilex_inpat;
8073 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8074 PL_lex_brackets = proto_perl->Ilex_brackets;
8075 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8076 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8077 PL_lex_casemods = proto_perl->Ilex_casemods;
8078 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8079 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8081 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8082 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8083 PL_nexttoke = proto_perl->Inexttoke;
8085 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8086 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8087 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8088 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8089 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8090 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8091 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8092 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8093 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8094 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8095 PL_pending_ident = proto_perl->Ipending_ident;
8096 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8098 PL_expect = proto_perl->Iexpect;
8100 PL_multi_start = proto_perl->Imulti_start;
8101 PL_multi_end = proto_perl->Imulti_end;
8102 PL_multi_open = proto_perl->Imulti_open;
8103 PL_multi_close = proto_perl->Imulti_close;
8105 PL_error_count = proto_perl->Ierror_count;
8106 PL_subline = proto_perl->Isubline;
8107 PL_subname = sv_dup_inc(proto_perl->Isubname);
8109 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8110 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8111 PL_padix = proto_perl->Ipadix;
8112 PL_padix_floor = proto_perl->Ipadix_floor;
8113 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8115 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8116 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8117 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8118 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8119 PL_last_lop_op = proto_perl->Ilast_lop_op;
8120 PL_in_my = proto_perl->Iin_my;
8121 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8123 PL_cryptseen = proto_perl->Icryptseen;
8126 PL_hints = proto_perl->Ihints;
8128 PL_amagic_generation = proto_perl->Iamagic_generation;
8130 #ifdef USE_LOCALE_COLLATE
8131 PL_collation_ix = proto_perl->Icollation_ix;
8132 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8133 PL_collation_standard = proto_perl->Icollation_standard;
8134 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8135 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8136 #endif /* USE_LOCALE_COLLATE */
8138 #ifdef USE_LOCALE_NUMERIC
8139 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8140 PL_numeric_standard = proto_perl->Inumeric_standard;
8141 PL_numeric_local = proto_perl->Inumeric_local;
8142 PL_numeric_radix = proto_perl->Inumeric_radix;
8143 #endif /* !USE_LOCALE_NUMERIC */
8145 /* utf8 character classes */
8146 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8147 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8148 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8149 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8150 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8151 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8152 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8153 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8154 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8155 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8156 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8157 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8158 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8159 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8160 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8161 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8162 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8165 PL_last_swash_hv = Nullhv; /* reinits on demand */
8166 PL_last_swash_klen = 0;
8167 PL_last_swash_key[0]= '\0';
8168 PL_last_swash_tmps = (U8*)NULL;
8169 PL_last_swash_slen = 0;
8171 /* perly.c globals */
8172 PL_yydebug = proto_perl->Iyydebug;
8173 PL_yynerrs = proto_perl->Iyynerrs;
8174 PL_yyerrflag = proto_perl->Iyyerrflag;
8175 PL_yychar = proto_perl->Iyychar;
8176 PL_yyval = proto_perl->Iyyval;
8177 PL_yylval = proto_perl->Iyylval;
8179 PL_glob_index = proto_perl->Iglob_index;
8180 PL_srand_called = proto_perl->Isrand_called;
8181 PL_uudmap['M'] = 0; /* reinits on demand */
8182 PL_bitcount = Nullch; /* reinits on demand */
8184 if (proto_perl->Ipsig_ptr) {
8185 int sig_num[] = { SIG_NUM };
8186 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8187 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8188 for (i = 1; PL_sig_name[i]; i++) {
8189 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8190 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8194 PL_psig_ptr = (SV**)NULL;
8195 PL_psig_name = (SV**)NULL;
8198 /* thrdvar.h stuff */
8201 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8202 PL_tmps_ix = proto_perl->Ttmps_ix;
8203 PL_tmps_max = proto_perl->Ttmps_max;
8204 PL_tmps_floor = proto_perl->Ttmps_floor;
8205 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8207 while (i <= PL_tmps_ix) {
8208 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8212 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8213 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8214 Newz(54, PL_markstack, i, I32);
8215 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8216 - proto_perl->Tmarkstack);
8217 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8218 - proto_perl->Tmarkstack);
8219 Copy(proto_perl->Tmarkstack, PL_markstack,
8220 PL_markstack_ptr - PL_markstack + 1, I32);
8222 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8223 * NOTE: unlike the others! */
8224 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8225 PL_scopestack_max = proto_perl->Tscopestack_max;
8226 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8227 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8229 /* next push_return() sets PL_retstack[PL_retstack_ix]
8230 * NOTE: unlike the others! */
8231 PL_retstack_ix = proto_perl->Tretstack_ix;
8232 PL_retstack_max = proto_perl->Tretstack_max;
8233 Newz(54, PL_retstack, PL_retstack_max, OP*);
8234 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8236 /* NOTE: si_dup() looks at PL_markstack */
8237 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8239 /* PL_curstack = PL_curstackinfo->si_stack; */
8240 PL_curstack = av_dup(proto_perl->Tcurstack);
8241 PL_mainstack = av_dup(proto_perl->Tmainstack);
8243 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8244 PL_stack_base = AvARRAY(PL_curstack);
8245 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8246 - proto_perl->Tstack_base);
8247 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8249 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8250 * NOTE: unlike the others! */
8251 PL_savestack_ix = proto_perl->Tsavestack_ix;
8252 PL_savestack_max = proto_perl->Tsavestack_max;
8253 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8254 PL_savestack = ss_dup(proto_perl);
8258 ENTER; /* perl_destruct() wants to LEAVE; */
8261 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8262 PL_top_env = &PL_start_env;
8264 PL_op = proto_perl->Top;
8267 PL_Xpv = (XPV*)NULL;
8268 PL_na = proto_perl->Tna;
8270 PL_statbuf = proto_perl->Tstatbuf;
8271 PL_statcache = proto_perl->Tstatcache;
8272 PL_statgv = gv_dup(proto_perl->Tstatgv);
8273 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8275 PL_timesbuf = proto_perl->Ttimesbuf;
8278 PL_tainted = proto_perl->Ttainted;
8279 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8280 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8281 PL_rs = sv_dup_inc(proto_perl->Trs);
8282 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8283 PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv);
8284 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8285 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8286 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8287 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8288 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8290 PL_restartop = proto_perl->Trestartop;
8291 PL_in_eval = proto_perl->Tin_eval;
8292 PL_delaymagic = proto_perl->Tdelaymagic;
8293 PL_dirty = proto_perl->Tdirty;
8294 PL_localizing = proto_perl->Tlocalizing;
8296 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8297 PL_protect = proto_perl->Tprotect;
8299 PL_errors = sv_dup_inc(proto_perl->Terrors);
8300 PL_av_fetch_sv = Nullsv;
8301 PL_hv_fetch_sv = Nullsv;
8302 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8303 PL_modcount = proto_perl->Tmodcount;
8304 PL_lastgotoprobe = Nullop;
8305 PL_dumpindent = proto_perl->Tdumpindent;
8307 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8308 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8309 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8310 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8311 PL_sortcxix = proto_perl->Tsortcxix;
8312 PL_efloatbuf = Nullch; /* reinits on demand */
8313 PL_efloatsize = 0; /* reinits on demand */
8317 PL_screamfirst = NULL;
8318 PL_screamnext = NULL;
8319 PL_maxscream = -1; /* reinits on demand */
8320 PL_lastscream = Nullsv;
8322 PL_watchaddr = NULL;
8323 PL_watchok = Nullch;
8325 PL_regdummy = proto_perl->Tregdummy;
8326 PL_regcomp_parse = Nullch;
8327 PL_regxend = Nullch;
8328 PL_regcode = (regnode*)NULL;
8331 PL_regprecomp = Nullch;
8336 PL_seen_zerolen = 0;
8338 PL_regcomp_rx = (regexp*)NULL;
8340 PL_colorset = 0; /* reinits PL_colors[] */
8341 /*PL_colors[6] = {0,0,0,0,0,0};*/
8342 PL_reg_whilem_seen = 0;
8343 PL_reginput = Nullch;
8346 PL_regstartp = (I32*)NULL;
8347 PL_regendp = (I32*)NULL;
8348 PL_reglastparen = (U32*)NULL;
8349 PL_regtill = Nullch;
8351 PL_reg_start_tmp = (char**)NULL;
8352 PL_reg_start_tmpl = 0;
8353 PL_regdata = (struct reg_data*)NULL;
8356 PL_reg_eval_set = 0;
8358 PL_regprogram = (regnode*)NULL;
8360 PL_regcc = (CURCUR*)NULL;
8361 PL_reg_call_cc = (struct re_cc_state*)NULL;
8362 PL_reg_re = (regexp*)NULL;
8363 PL_reg_ganch = Nullch;
8365 PL_reg_magic = (MAGIC*)NULL;
8367 PL_reg_oldcurpm = (PMOP*)NULL;
8368 PL_reg_curpm = (PMOP*)NULL;
8369 PL_reg_oldsaved = Nullch;
8370 PL_reg_oldsavedlen = 0;
8372 PL_reg_leftiter = 0;
8373 PL_reg_poscache = Nullch;
8374 PL_reg_poscache_size= 0;
8376 /* RE engine - function pointers */
8377 PL_regcompp = proto_perl->Tregcompp;
8378 PL_regexecp = proto_perl->Tregexecp;
8379 PL_regint_start = proto_perl->Tregint_start;
8380 PL_regint_string = proto_perl->Tregint_string;
8381 PL_regfree = proto_perl->Tregfree;
8383 PL_reginterp_cnt = 0;
8384 PL_reg_starttry = 0;
8387 return (PerlInterpreter*)pPerl;
8393 #else /* !USE_ITHREADS */
8399 #endif /* USE_ITHREADS */
8402 do_report_used(pTHXo_ SV *sv)
8404 if (SvTYPE(sv) != SVTYPEMASK) {
8405 PerlIO_printf(Perl_debug_log, "****\n");
8411 do_clean_objs(pTHXo_ SV *sv)
8415 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8416 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8417 if (SvWEAKREF(sv)) {
8428 /* XXX Might want to check arrays, etc. */
8431 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8433 do_clean_named_objs(pTHXo_ SV *sv)
8435 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8436 if ( SvOBJECT(GvSV(sv)) ||
8437 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8438 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8439 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8440 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8442 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8450 do_clean_all(pTHXo_ SV *sv)
8452 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8453 SvFLAGS(sv) |= SVf_BREAK;