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 (SvTYPE(sv) == mt)
922 switch (SvTYPE(sv)) {
943 else if (mt < SVt_PVIV)
960 pv = (char*)SvRV(sv);
980 else if (mt == SVt_NV)
991 del_XPVIV(SvANY(sv));
1001 del_XPVNV(SvANY(sv));
1009 magic = SvMAGIC(sv);
1010 stash = SvSTASH(sv);
1011 del_XPVMG(SvANY(sv));
1014 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
1019 Perl_croak(aTHX_ "Can't upgrade to undef");
1021 SvANY(sv) = new_XIV();
1025 SvANY(sv) = new_XNV();
1029 SvANY(sv) = new_XRV();
1033 SvANY(sv) = new_XPV();
1039 SvANY(sv) = new_XPVIV();
1049 SvANY(sv) = new_XPVNV();
1057 SvANY(sv) = new_XPVMG();
1063 SvMAGIC(sv) = magic;
1064 SvSTASH(sv) = stash;
1067 SvANY(sv) = new_XPVLV();
1073 SvMAGIC(sv) = magic;
1074 SvSTASH(sv) = stash;
1081 SvANY(sv) = new_XPVAV();
1089 SvMAGIC(sv) = magic;
1090 SvSTASH(sv) = stash;
1096 SvANY(sv) = new_XPVHV();
1104 SvMAGIC(sv) = magic;
1105 SvSTASH(sv) = stash;
1112 SvANY(sv) = new_XPVCV();
1113 Zero(SvANY(sv), 1, XPVCV);
1119 SvMAGIC(sv) = magic;
1120 SvSTASH(sv) = stash;
1123 SvANY(sv) = new_XPVGV();
1129 SvMAGIC(sv) = magic;
1130 SvSTASH(sv) = stash;
1138 SvANY(sv) = new_XPVBM();
1144 SvMAGIC(sv) = magic;
1145 SvSTASH(sv) = stash;
1151 SvANY(sv) = new_XPVFM();
1152 Zero(SvANY(sv), 1, XPVFM);
1158 SvMAGIC(sv) = magic;
1159 SvSTASH(sv) = stash;
1162 SvANY(sv) = new_XPVIO();
1163 Zero(SvANY(sv), 1, XPVIO);
1169 SvMAGIC(sv) = magic;
1170 SvSTASH(sv) = stash;
1171 IoPAGE_LEN(sv) = 60;
1174 SvFLAGS(sv) &= ~SVTYPEMASK;
1180 Perl_sv_backoff(pTHX_ register SV *sv)
1184 char *s = SvPVX(sv);
1185 SvLEN(sv) += SvIVX(sv);
1186 SvPVX(sv) -= SvIVX(sv);
1188 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1190 SvFLAGS(sv) &= ~SVf_OOK;
1197 Expands the character buffer in the SV. This will use C<sv_unref> and will
1198 upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1205 Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
1209 #ifdef HAS_64K_LIMIT
1210 if (newlen >= 0x10000) {
1211 PerlIO_printf(Perl_debug_log,
1212 "Allocation too large: %"UVxf"\n", (UV)newlen);
1215 #endif /* HAS_64K_LIMIT */
1218 if (SvTYPE(sv) < SVt_PV) {
1219 sv_upgrade(sv, SVt_PV);
1222 else if (SvOOK(sv)) { /* pv is offset? */
1225 if (newlen > SvLEN(sv))
1226 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1227 #ifdef HAS_64K_LIMIT
1228 if (newlen >= 0x10000)
1234 if (newlen > SvLEN(sv)) { /* need more room? */
1235 if (SvLEN(sv) && s) {
1236 #if defined(MYMALLOC) && !defined(LEAKTEST)
1237 STRLEN l = malloced_size((void*)SvPVX(sv));
1243 Renew(s,newlen,char);
1246 New(703,s,newlen,char);
1248 SvLEN_set(sv, newlen);
1254 =for apidoc sv_setiv
1256 Copies an integer into the given SV. Does not handle 'set' magic. See
1263 Perl_sv_setiv(pTHX_ register SV *sv, IV i)
1265 SV_CHECK_THINKFIRST(sv);
1266 switch (SvTYPE(sv)) {
1268 sv_upgrade(sv, SVt_IV);
1271 sv_upgrade(sv, SVt_PVNV);
1275 sv_upgrade(sv, SVt_PVIV);
1286 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1287 PL_op_desc[PL_op->op_type]);
1290 (void)SvIOK_only(sv); /* validate number */
1296 =for apidoc sv_setiv_mg
1298 Like C<sv_setiv>, but also handles 'set' magic.
1304 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1311 =for apidoc sv_setuv
1313 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1320 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
1328 =for apidoc sv_setuv_mg
1330 Like C<sv_setuv>, but also handles 'set' magic.
1336 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1343 =for apidoc sv_setnv
1345 Copies a double into the given SV. Does not handle 'set' magic. See
1352 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1354 SV_CHECK_THINKFIRST(sv);
1355 switch (SvTYPE(sv)) {
1358 sv_upgrade(sv, SVt_NV);
1363 sv_upgrade(sv, SVt_PVNV);
1374 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1375 PL_op_name[PL_op->op_type]);
1379 (void)SvNOK_only(sv); /* validate number */
1384 =for apidoc sv_setnv_mg
1386 Like C<sv_setnv>, but also handles 'set' magic.
1392 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1399 S_not_a_number(pTHX_ SV *sv)
1405 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1406 /* each *s can expand to 4 chars + "...\0",
1407 i.e. need room for 8 chars */
1409 for (s = SvPVX(sv); *s && d < limit; s++) {
1411 if (ch & 128 && !isPRINT_LC(ch)) {
1420 else if (ch == '\r') {
1424 else if (ch == '\f') {
1428 else if (ch == '\\') {
1432 else if (isPRINT_LC(ch))
1447 Perl_warner(aTHX_ WARN_NUMERIC,
1448 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1449 PL_op_desc[PL_op->op_type]);
1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric", tmpbuf);
1455 /* the number can be converted to integer with atol() or atoll() */
1456 #define IS_NUMBER_TO_INT_BY_ATOL 0x01
1457 #define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1458 #define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1459 #define IS_NUMBER_NEG 0x08 /* not good to cache UV */
1460 #define IS_NUMBER_INFINITY 0x10 /* this is big */
1462 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1463 until proven guilty, assume that things are not that bad... */
1466 Perl_sv_2iv(pTHX_ register SV *sv)
1470 if (SvGMAGICAL(sv)) {
1475 return I_V(SvNVX(sv));
1477 if (SvPOKp(sv) && SvLEN(sv))
1480 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1482 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1488 if (SvTHINKFIRST(sv)) {
1491 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1492 return SvIV(tmpstr);
1493 return PTR2IV(SvRV(sv));
1495 if (SvREADONLY(sv) && !SvOK(sv)) {
1497 if (ckWARN(WARN_UNINITIALIZED))
1504 return (IV)(SvUVX(sv));
1511 /* We can cache the IV/UV value even if it not good enough
1512 * to reconstruct NV, since the conversion to PV will prefer
1516 if (SvTYPE(sv) == SVt_NV)
1517 sv_upgrade(sv, SVt_PVNV);
1520 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1521 SvIVX(sv) = I_V(SvNVX(sv));
1523 SvUVX(sv) = U_V(SvNVX(sv));
1526 DEBUG_c(PerlIO_printf(Perl_debug_log,
1527 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1531 return (IV)SvUVX(sv);
1534 else if (SvPOKp(sv) && SvLEN(sv)) {
1535 I32 numtype = looks_like_number(sv);
1537 /* We want to avoid a possible problem when we cache an IV which
1538 may be later translated to an NV, and the resulting NV is not
1539 the translation of the initial data.
1541 This means that if we cache such an IV, we need to cache the
1542 NV as well. Moreover, we trade speed for space, and do not
1543 cache the NV if not needed.
1545 if (numtype & IS_NUMBER_NOT_IV) {
1546 /* May be not an integer. Need to cache NV if we cache IV
1547 * - otherwise future conversion to NV will be wrong. */
1550 d = Atof(SvPVX(sv));
1552 if (SvTYPE(sv) < SVt_PVNV)
1553 sv_upgrade(sv, SVt_PVNV);
1557 #if defined(USE_LONG_DOUBLE)
1558 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1559 PTR2UV(sv), SvNVX(sv)));
1561 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1562 PTR2UV(sv), SvNVX(sv)));
1564 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1565 SvIVX(sv) = I_V(SvNVX(sv));
1567 SvUVX(sv) = U_V(SvNVX(sv));
1572 else { /* The NV may be reconstructed from IV - safe to cache IV,
1573 which may be calculated by atol(). */
1574 if (SvTYPE(sv) < SVt_PVIV)
1575 sv_upgrade(sv, SVt_PVIV);
1577 SvIVX(sv) = Atol(SvPVX(sv));
1578 if (! numtype && ckWARN(WARN_NUMERIC))
1584 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1586 if (SvTYPE(sv) < SVt_IV)
1587 /* Typically the caller expects that sv_any is not NULL now. */
1588 sv_upgrade(sv, SVt_IV);
1591 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1592 PTR2UV(sv),SvIVX(sv)));
1593 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1597 Perl_sv_2uv(pTHX_ register SV *sv)
1601 if (SvGMAGICAL(sv)) {
1606 return U_V(SvNVX(sv));
1607 if (SvPOKp(sv) && SvLEN(sv))
1610 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1612 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1618 if (SvTHINKFIRST(sv)) {
1621 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1622 return SvUV(tmpstr);
1623 return PTR2UV(SvRV(sv));
1625 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. */
1728 if (SvTYPE(sv) < SVt_PVIV)
1729 sv_upgrade(sv, SVt_PVIV);
1731 (void)SvIsUV_on(sv);
1732 SvUVX(sv) = 0; /* We assume that 0s have the
1733 same bitmap in IV and UV. */
1734 if (ckWARN(WARN_NUMERIC))
1739 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1741 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1744 if (SvTYPE(sv) < SVt_IV)
1745 /* Typically the caller expects that sv_any is not NULL now. */
1746 sv_upgrade(sv, SVt_IV);
1750 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1751 PTR2UV(sv),SvUVX(sv)));
1752 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1756 Perl_sv_2nv(pTHX_ register SV *sv)
1760 if (SvGMAGICAL(sv)) {
1764 if (SvPOKp(sv) && SvLEN(sv)) {
1766 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1768 return Atof(SvPVX(sv));
1772 return (NV)SvUVX(sv);
1774 return (NV)SvIVX(sv);
1777 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1779 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1785 if (SvTHINKFIRST(sv)) {
1788 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1789 return SvNV(tmpstr);
1790 return PTR2NV(SvRV(sv));
1792 if (SvREADONLY(sv) && !SvOK(sv)) {
1794 if (ckWARN(WARN_UNINITIALIZED))
1799 if (SvTYPE(sv) < SVt_NV) {
1800 if (SvTYPE(sv) == SVt_IV)
1801 sv_upgrade(sv, SVt_PVNV);
1803 sv_upgrade(sv, SVt_NV);
1804 #if defined(USE_LONG_DOUBLE)
1806 STORE_NUMERIC_LOCAL_SET_STANDARD();
1807 PerlIO_printf(Perl_debug_log,
1808 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1809 PTR2UV(sv), SvNVX(sv));
1810 RESTORE_NUMERIC_LOCAL();
1814 STORE_NUMERIC_LOCAL_SET_STANDARD();
1815 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1816 PTR2UV(sv), SvNVX(sv));
1817 RESTORE_NUMERIC_LOCAL();
1821 else if (SvTYPE(sv) < SVt_PVNV)
1822 sv_upgrade(sv, SVt_PVNV);
1824 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1826 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1828 else if (SvPOKp(sv) && SvLEN(sv)) {
1830 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1832 SvNVX(sv) = Atof(SvPVX(sv));
1836 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1838 if (SvTYPE(sv) < SVt_NV)
1839 /* Typically the caller expects that sv_any is not NULL now. */
1840 sv_upgrade(sv, SVt_NV);
1844 #if defined(USE_LONG_DOUBLE)
1846 STORE_NUMERIC_LOCAL_SET_STANDARD();
1847 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1848 PTR2UV(sv), SvNVX(sv));
1849 RESTORE_NUMERIC_LOCAL();
1853 STORE_NUMERIC_LOCAL_SET_STANDARD();
1854 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1855 PTR2UV(sv), SvNVX(sv));
1856 RESTORE_NUMERIC_LOCAL();
1863 S_asIV(pTHX_ SV *sv)
1865 I32 numtype = looks_like_number(sv);
1868 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1869 return Atol(SvPVX(sv));
1872 if (ckWARN(WARN_NUMERIC))
1875 d = Atof(SvPVX(sv));
1880 S_asUV(pTHX_ SV *sv)
1882 I32 numtype = looks_like_number(sv);
1885 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1886 return Strtoul(SvPVX(sv), Null(char**), 10);
1890 if (ckWARN(WARN_NUMERIC))
1893 return U_V(Atof(SvPVX(sv)));
1897 * Returns a combination of (advisory only - can get false negatives)
1898 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1900 * 0 if does not look like number.
1902 * In fact possible values are 0 and
1903 * IS_NUMBER_TO_INT_BY_ATOL 123
1904 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1905 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1906 * IS_NUMBER_INFINITY
1907 * with a possible addition of IS_NUMBER_NEG.
1911 =for apidoc looks_like_number
1913 Test if an the content of an SV looks like a number (or is a
1920 Perl_looks_like_number(pTHX_ SV *sv)
1923 register char *send;
1924 register char *sbegin;
1925 register char *nbegin;
1934 else if (SvPOKp(sv))
1935 sbegin = SvPV(sv, len);
1938 send = sbegin + len;
1945 numtype = IS_NUMBER_NEG;
1952 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1953 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1957 /* next must be digit or the radix separator or beginning of infinity */
1961 } while (isDIGIT(*s));
1963 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1964 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1966 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1969 #ifdef USE_LOCALE_NUMERIC
1970 || IS_NUMERIC_RADIX(*s)
1974 numtype |= IS_NUMBER_NOT_IV;
1975 while (isDIGIT(*s)) /* optional digits after the radix */
1980 #ifdef USE_LOCALE_NUMERIC
1981 || IS_NUMERIC_RADIX(*s)
1985 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1986 /* no digits before the radix means we need digits after it */
1990 } while (isDIGIT(*s));
1995 else if (*s == 'I' || *s == 'i') {
1996 s++; if (*s != 'N' && *s != 'n') return 0;
1997 s++; if (*s != 'F' && *s != 'f') return 0;
1998 s++; if (*s == 'I' || *s == 'i') {
1999 s++; if (*s != 'N' && *s != 'n') return 0;
2000 s++; if (*s != 'I' && *s != 'i') return 0;
2001 s++; if (*s != 'T' && *s != 't') return 0;
2002 s++; if (*s != 'Y' && *s != 'y') return 0;
2010 numtype = IS_NUMBER_INFINITY;
2012 /* we can have an optional exponent part */
2013 if (*s == 'e' || *s == 'E') {
2014 numtype &= ~IS_NUMBER_NEG;
2015 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2017 if (*s == '+' || *s == '-')
2022 } while (isDIGIT(*s));
2032 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2033 return IS_NUMBER_TO_INT_BY_ATOL;
2038 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2041 return sv_2pv(sv, &n_a);
2044 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2046 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2048 char *ptr = buf + TYPE_CHARS(UV);
2062 *--ptr = '0' + (uv % 10);
2071 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2076 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2077 char *tmpbuf = tbuf;
2083 if (SvGMAGICAL(sv)) {
2091 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2093 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2098 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2103 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2105 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2112 if (SvTHINKFIRST(sv)) {
2115 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
2116 return SvPV(tmpstr,*lp);
2123 switch (SvTYPE(sv)) {
2125 if ( ((SvFLAGS(sv) &
2126 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2127 == (SVs_OBJECT|SVs_RMG))
2128 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2129 && (mg = mg_find(sv, 'r'))) {
2131 regexp *re = (regexp *)mg->mg_obj;
2134 char *fptr = "msix";
2139 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2141 while((ch = *fptr++)) {
2143 reflags[left++] = ch;
2146 reflags[right--] = ch;
2151 reflags[left] = '-';
2155 mg->mg_len = re->prelen + 4 + left;
2156 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2157 Copy("(?", mg->mg_ptr, 2, char);
2158 Copy(reflags, mg->mg_ptr+2, left, char);
2159 Copy(":", mg->mg_ptr+left+2, 1, char);
2160 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2161 mg->mg_ptr[mg->mg_len - 1] = ')';
2162 mg->mg_ptr[mg->mg_len] = 0;
2164 PL_reginterp_cnt += re->program[0].next_off;
2176 case SVt_PVBM: if (SvROK(sv))
2179 s = "SCALAR"; break;
2180 case SVt_PVLV: s = "LVALUE"; break;
2181 case SVt_PVAV: s = "ARRAY"; break;
2182 case SVt_PVHV: s = "HASH"; break;
2183 case SVt_PVCV: s = "CODE"; break;
2184 case SVt_PVGV: s = "GLOB"; break;
2185 case SVt_PVFM: s = "FORMAT"; break;
2186 case SVt_PVIO: s = "IO"; break;
2187 default: s = "UNKNOWN"; break;
2191 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2194 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2200 if (SvREADONLY(sv) && !SvOK(sv)) {
2202 if (ckWARN(WARN_UNINITIALIZED))
2208 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2209 /* XXXX 64-bit? IV may have better precision... */
2210 /* I tried changing this for to be 64-bit-aware and
2211 * the t/op/numconvert.t became very, very, angry.
2213 if (SvTYPE(sv) < SVt_PVNV)
2214 sv_upgrade(sv, SVt_PVNV);
2217 olderrno = errno; /* some Xenix systems wipe out errno here */
2219 if (SvNVX(sv) == 0.0)
2220 (void)strcpy(s,"0");
2224 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2227 #ifdef FIXNEGATIVEZERO
2228 if (*s == '-' && s[1] == '0' && !s[2])
2237 else if (SvIOKp(sv)) {
2238 U32 isIOK = SvIOK(sv);
2239 U32 isUIOK = SvIsUV(sv);
2240 char buf[TYPE_CHARS(UV)];
2243 if (SvTYPE(sv) < SVt_PVIV)
2244 sv_upgrade(sv, SVt_PVIV);
2246 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2248 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2249 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2250 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2251 SvCUR_set(sv, ebuf - ptr);
2264 if (ckWARN(WARN_UNINITIALIZED)
2265 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2270 if (SvTYPE(sv) < SVt_PV)
2271 /* Typically the caller expects that sv_any is not NULL now. */
2272 sv_upgrade(sv, SVt_PV);
2275 *lp = s - SvPVX(sv);
2278 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2279 PTR2UV(sv),SvPVX(sv)));
2283 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2284 /* Sneaky stuff here */
2288 tsv = newSVpv(tmpbuf, 0);
2304 len = strlen(tmpbuf);
2306 #ifdef FIXNEGATIVEZERO
2307 if (len == 2 && t[0] == '-' && t[1] == '0') {
2312 (void)SvUPGRADE(sv, SVt_PV);
2314 s = SvGROW(sv, len + 1);
2323 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2326 return sv_2pvbyte(sv, &n_a);
2330 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2332 return sv_2pv(sv,lp);
2336 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2339 return sv_2pvutf8(sv, &n_a);
2343 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2345 sv_utf8_upgrade(sv);
2346 return sv_2pv(sv,lp);
2349 /* This function is only called on magical items */
2351 Perl_sv_2bool(pTHX_ register SV *sv)
2361 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
2362 return SvTRUE(tmpsv);
2363 return SvRV(sv) != 0;
2366 register XPV* Xpvtmp;
2367 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2368 (*Xpvtmp->xpv_pv > '0' ||
2369 Xpvtmp->xpv_cur > 1 ||
2370 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2377 return SvIVX(sv) != 0;
2380 return SvNVX(sv) != 0.0;
2388 =for apidoc sv_utf8_upgrade
2390 Convert the PV of an SV to its UTF8-encoded form.
2396 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2401 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2404 /* This function could be much more efficient if we had a FLAG
2405 * to signal if there are any hibit chars in the string
2408 for (c = SvPVX(sv); c < SvEND(sv); c++) {
2415 SvGROW(sv, SvCUR(sv) + hicount + 1);
2417 src = SvEND(sv) - 1;
2418 SvCUR_set(sv, SvCUR(sv) + hicount);
2419 dst = SvEND(sv) - 1;
2424 uv_to_utf8((U8*)dst, (U8)*src--);
2437 =for apidoc sv_utf8_downgrade
2439 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2440 This may not be possible if the PV contains non-byte encoding characters;
2441 if this is the case, either returns false or, if C<fail_ok> is not
2448 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2450 if (SvPOK(sv) && SvUTF8(sv)) {
2451 char *c = SvPVX(sv);
2453 /* need to figure out if this is possible at all first */
2454 while (c < SvEND(sv)) {
2457 UV uv = utf8_to_uv((U8*)c, &len);
2462 /* XXX might want to make a callback here instead */
2463 Perl_croak(aTHX_ "Big byte");
2476 char *src = first_hi;
2477 char *dst = first_hi;
2478 while (src < SvEND(sv)) {
2481 U8 u = (U8)utf8_to_uv((U8*)src, &len);
2489 SvCUR_set(sv, dst - SvPVX(sv));
2497 =for apidoc sv_utf8_encode
2499 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2500 flag so that it looks like bytes again. Nothing calls this.
2506 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2508 sv_utf8_upgrade(sv);
2513 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2517 bool has_utf = FALSE;
2518 if (!sv_utf8_downgrade(sv, TRUE))
2521 /* it is actually just a matter of turning the utf8 flag on, but
2522 * we want to make sure everything inside is valid utf8 first.
2525 while (c < SvEND(sv)) {
2528 (void)utf8_to_uv((U8*)c, &len);
2548 /* Note: sv_setsv() should not be called with a source string that needs
2549 * to be reused, since it may destroy the source string if it is marked
2554 =for apidoc sv_setsv
2556 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2557 The source SV may be destroyed if it is mortal. Does not handle 'set'
2558 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2565 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2568 register U32 sflags;
2574 SV_CHECK_THINKFIRST(dstr);
2576 sstr = &PL_sv_undef;
2577 stype = SvTYPE(sstr);
2578 dtype = SvTYPE(dstr);
2582 /* There's a lot of redundancy below but we're going for speed here */
2587 if (dtype != SVt_PVGV) {
2588 (void)SvOK_off(dstr);
2596 sv_upgrade(dstr, SVt_IV);
2599 sv_upgrade(dstr, SVt_PVNV);
2603 sv_upgrade(dstr, SVt_PVIV);
2606 (void)SvIOK_only(dstr);
2607 SvIVX(dstr) = SvIVX(sstr);
2620 sv_upgrade(dstr, SVt_NV);
2625 sv_upgrade(dstr, SVt_PVNV);
2628 SvNVX(dstr) = SvNVX(sstr);
2629 (void)SvNOK_only(dstr);
2637 sv_upgrade(dstr, SVt_RV);
2638 else if (dtype == SVt_PVGV &&
2639 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2642 if (GvIMPORTED(dstr) != GVf_IMPORTED
2643 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2645 GvIMPORTED_on(dstr);
2656 sv_upgrade(dstr, SVt_PV);
2659 if (dtype < SVt_PVIV)
2660 sv_upgrade(dstr, SVt_PVIV);
2663 if (dtype < SVt_PVNV)
2664 sv_upgrade(dstr, SVt_PVNV);
2671 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2672 PL_op_name[PL_op->op_type]);
2674 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2678 if (dtype <= SVt_PVGV) {
2680 if (dtype != SVt_PVGV) {
2681 char *name = GvNAME(sstr);
2682 STRLEN len = GvNAMELEN(sstr);
2683 sv_upgrade(dstr, SVt_PVGV);
2684 sv_magic(dstr, dstr, '*', Nullch, 0);
2685 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2686 GvNAME(dstr) = savepvn(name, len);
2687 GvNAMELEN(dstr) = len;
2688 SvFAKE_on(dstr); /* can coerce to non-glob */
2690 /* ahem, death to those who redefine active sort subs */
2691 else if (PL_curstackinfo->si_type == PERLSI_SORT
2692 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2693 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2695 (void)SvOK_off(dstr);
2696 GvINTRO_off(dstr); /* one-shot flag */
2698 GvGP(dstr) = gp_ref(GvGP(sstr));
2700 if (GvIMPORTED(dstr) != GVf_IMPORTED
2701 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2703 GvIMPORTED_on(dstr);
2711 if (SvGMAGICAL(sstr)) {
2713 if (SvTYPE(sstr) != stype) {
2714 stype = SvTYPE(sstr);
2715 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2719 if (stype == SVt_PVLV)
2720 (void)SvUPGRADE(dstr, SVt_PVNV);
2722 (void)SvUPGRADE(dstr, stype);
2725 sflags = SvFLAGS(sstr);
2727 if (sflags & SVf_ROK) {
2728 if (dtype >= SVt_PV) {
2729 if (dtype == SVt_PVGV) {
2730 SV *sref = SvREFCNT_inc(SvRV(sstr));
2732 int intro = GvINTRO(dstr);
2737 GvINTRO_off(dstr); /* one-shot flag */
2738 Newz(602,gp, 1, GP);
2739 GvGP(dstr) = gp_ref(gp);
2740 GvSV(dstr) = NEWSV(72,0);
2741 GvLINE(dstr) = CopLINE(PL_curcop);
2742 GvEGV(dstr) = (GV*)dstr;
2745 switch (SvTYPE(sref)) {
2748 SAVESPTR(GvAV(dstr));
2750 dref = (SV*)GvAV(dstr);
2751 GvAV(dstr) = (AV*)sref;
2752 if (!GvIMPORTED_AV(dstr)
2753 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2755 GvIMPORTED_AV_on(dstr);
2760 SAVESPTR(GvHV(dstr));
2762 dref = (SV*)GvHV(dstr);
2763 GvHV(dstr) = (HV*)sref;
2764 if (!GvIMPORTED_HV(dstr)
2765 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2767 GvIMPORTED_HV_on(dstr);
2772 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2773 SvREFCNT_dec(GvCV(dstr));
2774 GvCV(dstr) = Nullcv;
2775 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2776 PL_sub_generation++;
2778 SAVESPTR(GvCV(dstr));
2781 dref = (SV*)GvCV(dstr);
2782 if (GvCV(dstr) != (CV*)sref) {
2783 CV* cv = GvCV(dstr);
2785 if (!GvCVGEN((GV*)dstr) &&
2786 (CvROOT(cv) || CvXSUB(cv)))
2788 SV *const_sv = cv_const_sv(cv);
2789 bool const_changed = TRUE;
2791 const_changed = sv_cmp(const_sv,
2792 op_const_sv(CvSTART((CV*)sref),
2794 /* ahem, death to those who redefine
2795 * active sort subs */
2796 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2797 PL_sortcop == CvSTART(cv))
2799 "Can't redefine active sort subroutine %s",
2800 GvENAME((GV*)dstr));
2801 if ((const_changed && const_sv) || ckWARN(WARN_REDEFINE))
2802 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
2803 "Constant subroutine %s redefined"
2804 : "Subroutine %s redefined",
2805 GvENAME((GV*)dstr));
2807 cv_ckproto(cv, (GV*)dstr,
2808 SvPOK(sref) ? SvPVX(sref) : Nullch);
2810 GvCV(dstr) = (CV*)sref;
2811 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2812 GvASSUMECV_on(dstr);
2813 PL_sub_generation++;
2815 if (!GvIMPORTED_CV(dstr)
2816 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2818 GvIMPORTED_CV_on(dstr);
2823 SAVESPTR(GvIOp(dstr));
2825 dref = (SV*)GvIOp(dstr);
2826 GvIOp(dstr) = (IO*)sref;
2830 SAVESPTR(GvFORM(dstr));
2832 dref = (SV*)GvFORM(dstr);
2833 GvFORM(dstr) = (CV*)sref;
2837 SAVESPTR(GvSV(dstr));
2839 dref = (SV*)GvSV(dstr);
2841 if (!GvIMPORTED_SV(dstr)
2842 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2844 GvIMPORTED_SV_on(dstr);
2856 (void)SvOOK_off(dstr); /* backoff */
2858 Safefree(SvPVX(dstr));
2859 SvLEN(dstr)=SvCUR(dstr)=0;
2862 (void)SvOK_off(dstr);
2863 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2865 if (sflags & SVp_NOK) {
2867 SvNVX(dstr) = SvNVX(sstr);
2869 if (sflags & SVp_IOK) {
2870 (void)SvIOK_on(dstr);
2871 SvIVX(dstr) = SvIVX(sstr);
2872 if (sflags & SVf_IVisUV)
2875 if (SvAMAGIC(sstr)) {
2879 else if (sflags & SVp_POK) {
2882 * Check to see if we can just swipe the string. If so, it's a
2883 * possible small lose on short strings, but a big win on long ones.
2884 * It might even be a win on short strings if SvPVX(dstr)
2885 * has to be allocated and SvPVX(sstr) has to be freed.
2888 if (SvTEMP(sstr) && /* slated for free anyway? */
2889 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2890 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2892 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2894 SvFLAGS(dstr) &= ~SVf_OOK;
2895 Safefree(SvPVX(dstr) - SvIVX(dstr));
2897 else if (SvLEN(dstr))
2898 Safefree(SvPVX(dstr));
2900 (void)SvPOK_only(dstr);
2901 SvPV_set(dstr, SvPVX(sstr));
2902 SvLEN_set(dstr, SvLEN(sstr));
2903 SvCUR_set(dstr, SvCUR(sstr));
2906 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2907 SvPV_set(sstr, Nullch);
2912 else { /* have to copy actual string */
2913 STRLEN len = SvCUR(sstr);
2915 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2916 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2917 SvCUR_set(dstr, len);
2918 *SvEND(dstr) = '\0';
2919 (void)SvPOK_only(dstr);
2921 if ((sflags & SVf_UTF8) && !IN_BYTE)
2924 if (sflags & SVp_NOK) {
2926 SvNVX(dstr) = SvNVX(sstr);
2928 if (sflags & SVp_IOK) {
2929 (void)SvIOK_on(dstr);
2930 SvIVX(dstr) = SvIVX(sstr);
2931 if (sflags & SVf_IVisUV)
2935 else if (sflags & SVp_NOK) {
2936 SvNVX(dstr) = SvNVX(sstr);
2937 (void)SvNOK_only(dstr);
2938 if (sflags & SVf_IOK) {
2939 (void)SvIOK_on(dstr);
2940 SvIVX(dstr) = SvIVX(sstr);
2941 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2942 if (sflags & SVf_IVisUV)
2946 else if (sflags & SVp_IOK) {
2947 (void)SvIOK_only(dstr);
2948 SvIVX(dstr) = SvIVX(sstr);
2949 if (sflags & SVf_IVisUV)
2953 if (dtype == SVt_PVGV) {
2954 if (ckWARN(WARN_MISC))
2955 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2958 (void)SvOK_off(dstr);
2964 =for apidoc sv_setsv_mg
2966 Like C<sv_setsv>, but also handles 'set' magic.
2972 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2974 sv_setsv(dstr,sstr);
2979 =for apidoc sv_setpvn
2981 Copies a string into an SV. The C<len> parameter indicates the number of
2982 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2988 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2990 register char *dptr;
2991 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2992 elicit a warning, but it won't hurt. */
2993 SV_CHECK_THINKFIRST(sv);
2998 (void)SvUPGRADE(sv, SVt_PV);
3000 SvGROW(sv, len + 1);
3002 Move(ptr,dptr,len,char);
3005 (void)SvPOK_only(sv); /* validate pointer */
3010 =for apidoc sv_setpvn_mg
3012 Like C<sv_setpvn>, but also handles 'set' magic.
3018 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3020 sv_setpvn(sv,ptr,len);
3025 =for apidoc sv_setpv
3027 Copies a string into an SV. The string must be null-terminated. Does not
3028 handle 'set' magic. See C<sv_setpv_mg>.
3034 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3036 register STRLEN len;
3038 SV_CHECK_THINKFIRST(sv);
3044 (void)SvUPGRADE(sv, SVt_PV);
3046 SvGROW(sv, len + 1);
3047 Move(ptr,SvPVX(sv),len+1,char);
3049 (void)SvPOK_only(sv); /* validate pointer */
3054 =for apidoc sv_setpv_mg
3056 Like C<sv_setpv>, but also handles 'set' magic.
3062 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3069 =for apidoc sv_usepvn
3071 Tells an SV to use C<ptr> to find its string value. Normally the string is
3072 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3073 The C<ptr> should point to memory that was allocated by C<malloc>. The
3074 string length, C<len>, must be supplied. This function will realloc the
3075 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3076 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3077 See C<sv_usepvn_mg>.
3083 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3085 SV_CHECK_THINKFIRST(sv);
3086 (void)SvUPGRADE(sv, SVt_PV);
3091 (void)SvOOK_off(sv);
3092 if (SvPVX(sv) && SvLEN(sv))
3093 Safefree(SvPVX(sv));
3094 Renew(ptr, len+1, char);
3097 SvLEN_set(sv, len+1);
3099 (void)SvPOK_only(sv); /* validate pointer */
3104 =for apidoc sv_usepvn_mg
3106 Like C<sv_usepvn>, but also handles 'set' magic.
3112 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3114 sv_usepvn(sv,ptr,len);
3119 Perl_sv_force_normal(pTHX_ register SV *sv)
3121 if (SvREADONLY(sv)) {
3123 if (PL_curcop != &PL_compiling)
3124 Perl_croak(aTHX_ PL_no_modify);
3128 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3135 Efficient removal of characters from the beginning of the string buffer.
3136 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3137 the string buffer. The C<ptr> becomes the first character of the adjusted
3144 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3148 register STRLEN delta;
3150 if (!ptr || !SvPOKp(sv))
3152 SV_CHECK_THINKFIRST(sv);
3153 if (SvTYPE(sv) < SVt_PVIV)
3154 sv_upgrade(sv,SVt_PVIV);
3157 if (!SvLEN(sv)) { /* make copy of shared string */
3158 char *pvx = SvPVX(sv);
3159 STRLEN len = SvCUR(sv);
3160 SvGROW(sv, len + 1);
3161 Move(pvx,SvPVX(sv),len,char);
3165 SvFLAGS(sv) |= SVf_OOK;
3167 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3168 delta = ptr - SvPVX(sv);
3176 =for apidoc sv_catpvn
3178 Concatenates the string onto the end of the string which is in the SV. The
3179 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3180 'set' magic. See C<sv_catpvn_mg>.
3186 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3191 junk = SvPV_force(sv, tlen);
3192 SvGROW(sv, tlen + len + 1);
3195 Move(ptr,SvPVX(sv)+tlen,len,char);
3198 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3203 =for apidoc sv_catpvn_mg
3205 Like C<sv_catpvn>, but also handles 'set' magic.
3211 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3213 sv_catpvn(sv,ptr,len);
3218 =for apidoc sv_catsv
3220 Concatenates the string from SV C<ssv> onto the end of the string in SV
3221 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3227 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3233 if ((s = SvPV(sstr, len))) {
3234 if (DO_UTF8(sstr)) {
3235 sv_utf8_upgrade(dstr);
3236 sv_catpvn(dstr,s,len);
3240 sv_catpvn(dstr,s,len);
3245 =for apidoc sv_catsv_mg
3247 Like C<sv_catsv>, but also handles 'set' magic.
3253 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3255 sv_catsv(dstr,sstr);
3260 =for apidoc sv_catpv
3262 Concatenates the string onto the end of the string which is in the SV.
3263 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3269 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3271 register STRLEN len;
3277 junk = SvPV_force(sv, tlen);
3279 SvGROW(sv, tlen + len + 1);
3282 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3284 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3289 =for apidoc sv_catpv_mg
3291 Like C<sv_catpv>, but also handles 'set' magic.
3297 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3304 Perl_newSV(pTHX_ STRLEN len)
3310 sv_upgrade(sv, SVt_PV);
3311 SvGROW(sv, len + 1);
3316 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3319 =for apidoc sv_magic
3321 Adds magic to an SV.
3327 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3331 if (SvREADONLY(sv)) {
3333 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3334 Perl_croak(aTHX_ PL_no_modify);
3336 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3337 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3344 (void)SvUPGRADE(sv, SVt_PVMG);
3346 Newz(702,mg, 1, MAGIC);
3347 mg->mg_moremagic = SvMAGIC(sv);
3350 if (!obj || obj == sv || how == '#' || how == 'r')
3354 mg->mg_obj = SvREFCNT_inc(obj);
3355 mg->mg_flags |= MGf_REFCOUNTED;
3358 mg->mg_len = namlen;
3361 mg->mg_ptr = savepvn(name, namlen);
3362 else if (namlen == HEf_SVKEY)
3363 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3367 mg->mg_virtual = &PL_vtbl_sv;
3370 mg->mg_virtual = &PL_vtbl_amagic;
3373 mg->mg_virtual = &PL_vtbl_amagicelem;
3379 mg->mg_virtual = &PL_vtbl_bm;
3382 mg->mg_virtual = &PL_vtbl_regdata;
3385 mg->mg_virtual = &PL_vtbl_regdatum;
3388 mg->mg_virtual = &PL_vtbl_env;
3391 mg->mg_virtual = &PL_vtbl_fm;
3394 mg->mg_virtual = &PL_vtbl_envelem;
3397 mg->mg_virtual = &PL_vtbl_mglob;
3400 mg->mg_virtual = &PL_vtbl_isa;
3403 mg->mg_virtual = &PL_vtbl_isaelem;
3406 mg->mg_virtual = &PL_vtbl_nkeys;
3413 mg->mg_virtual = &PL_vtbl_dbline;
3417 mg->mg_virtual = &PL_vtbl_mutex;
3419 #endif /* USE_THREADS */
3420 #ifdef USE_LOCALE_COLLATE
3422 mg->mg_virtual = &PL_vtbl_collxfrm;
3424 #endif /* USE_LOCALE_COLLATE */
3426 mg->mg_virtual = &PL_vtbl_pack;
3430 mg->mg_virtual = &PL_vtbl_packelem;
3433 mg->mg_virtual = &PL_vtbl_regexp;
3436 mg->mg_virtual = &PL_vtbl_sig;
3439 mg->mg_virtual = &PL_vtbl_sigelem;
3442 mg->mg_virtual = &PL_vtbl_taint;
3446 mg->mg_virtual = &PL_vtbl_uvar;
3449 mg->mg_virtual = &PL_vtbl_vec;
3452 mg->mg_virtual = &PL_vtbl_substr;
3455 mg->mg_virtual = &PL_vtbl_defelem;
3458 mg->mg_virtual = &PL_vtbl_glob;
3461 mg->mg_virtual = &PL_vtbl_arylen;
3464 mg->mg_virtual = &PL_vtbl_pos;
3467 mg->mg_virtual = &PL_vtbl_backref;
3469 case '~': /* Reserved for use by extensions not perl internals. */
3470 /* Useful for attaching extension internal data to perl vars. */
3471 /* Note that multiple extensions may clash if magical scalars */
3472 /* etc holding private data from one are passed to another. */
3476 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3480 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3484 =for apidoc sv_unmagic
3486 Removes magic from an SV.
3492 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3496 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3499 for (mg = *mgp; mg; mg = *mgp) {
3500 if (mg->mg_type == type) {
3501 MGVTBL* vtbl = mg->mg_virtual;
3502 *mgp = mg->mg_moremagic;
3503 if (vtbl && vtbl->svt_free)
3504 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3505 if (mg->mg_ptr && mg->mg_type != 'g')
3506 if (mg->mg_len >= 0)
3507 Safefree(mg->mg_ptr);
3508 else if (mg->mg_len == HEf_SVKEY)
3509 SvREFCNT_dec((SV*)mg->mg_ptr);
3510 if (mg->mg_flags & MGf_REFCOUNTED)
3511 SvREFCNT_dec(mg->mg_obj);
3515 mgp = &mg->mg_moremagic;
3519 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3526 =for apidoc sv_rvweaken
3534 Perl_sv_rvweaken(pTHX_ SV *sv)
3537 if (!SvOK(sv)) /* let undefs pass */
3540 Perl_croak(aTHX_ "Can't weaken a nonreference");
3541 else if (SvWEAKREF(sv)) {
3543 if (ckWARN(WARN_MISC))
3544 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3548 sv_add_backref(tsv, sv);
3555 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3559 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3560 av = (AV*)mg->mg_obj;
3563 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3564 SvREFCNT_dec(av); /* for sv_magic */
3570 S_sv_del_backref(pTHX_ SV *sv)
3577 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3578 Perl_croak(aTHX_ "panic: del_backref");
3579 av = (AV *)mg->mg_obj;
3584 svp[i] = &PL_sv_undef; /* XXX */
3591 =for apidoc sv_insert
3593 Inserts a string at the specified offset/length within the SV. Similar to
3594 the Perl substr() function.
3600 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3604 register char *midend;
3605 register char *bigend;
3611 Perl_croak(aTHX_ "Can't modify non-existent substring");
3612 SvPV_force(bigstr, curlen);
3613 (void)SvPOK_only_UTF8(bigstr);
3614 if (offset + len > curlen) {
3615 SvGROW(bigstr, offset+len+1);
3616 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3617 SvCUR_set(bigstr, offset+len);
3621 i = littlelen - len;
3622 if (i > 0) { /* string might grow */
3623 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3624 mid = big + offset + len;
3625 midend = bigend = big + SvCUR(bigstr);
3628 while (midend > mid) /* shove everything down */
3629 *--bigend = *--midend;
3630 Move(little,big+offset,littlelen,char);
3636 Move(little,SvPVX(bigstr)+offset,len,char);
3641 big = SvPVX(bigstr);
3644 bigend = big + SvCUR(bigstr);
3646 if (midend > bigend)
3647 Perl_croak(aTHX_ "panic: sv_insert");
3649 if (mid - big > bigend - midend) { /* faster to shorten from end */
3651 Move(little, mid, littlelen,char);
3654 i = bigend - midend;
3656 Move(midend, mid, i,char);
3660 SvCUR_set(bigstr, mid - big);
3663 else if ((i = mid - big)) { /* faster from front */
3664 midend -= littlelen;
3666 sv_chop(bigstr,midend-i);
3671 Move(little, mid, littlelen,char);
3673 else if (littlelen) {
3674 midend -= littlelen;
3675 sv_chop(bigstr,midend);
3676 Move(little,midend,littlelen,char);
3679 sv_chop(bigstr,midend);
3685 =for apidoc sv_replace
3687 Make the first argument a copy of the second, then delete the original.
3693 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3696 U32 refcnt = SvREFCNT(sv);
3697 SV_CHECK_THINKFIRST(sv);
3698 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3699 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3700 if (SvMAGICAL(sv)) {
3704 sv_upgrade(nsv, SVt_PVMG);
3705 SvMAGIC(nsv) = SvMAGIC(sv);
3706 SvFLAGS(nsv) |= SvMAGICAL(sv);
3712 assert(!SvREFCNT(sv));
3713 StructCopy(nsv,sv,SV);
3714 SvREFCNT(sv) = refcnt;
3715 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3720 =for apidoc sv_clear
3722 Clear an SV, making it empty. Does not free the memory used by the SV
3729 Perl_sv_clear(pTHX_ register SV *sv)
3733 assert(SvREFCNT(sv) == 0);
3737 if (PL_defstash) { /* Still have a symbol table? */
3742 Zero(&tmpref, 1, SV);
3743 sv_upgrade(&tmpref, SVt_RV);
3745 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3746 SvREFCNT(&tmpref) = 1;
3749 stash = SvSTASH(sv);
3750 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3753 PUSHSTACKi(PERLSI_DESTROY);
3754 SvRV(&tmpref) = SvREFCNT_inc(sv);
3759 call_sv((SV*)GvCV(destructor),
3760 G_DISCARD|G_EVAL|G_KEEPERR);
3766 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3768 del_XRV(SvANY(&tmpref));
3771 if (PL_in_clean_objs)
3772 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3774 /* DESTROY gave object new lease on life */
3780 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3781 SvOBJECT_off(sv); /* Curse the object. */
3782 if (SvTYPE(sv) != SVt_PVIO)
3783 --PL_sv_objcount; /* XXX Might want something more general */
3786 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3789 switch (SvTYPE(sv)) {
3792 IoIFP(sv) != PerlIO_stdin() &&
3793 IoIFP(sv) != PerlIO_stdout() &&
3794 IoIFP(sv) != PerlIO_stderr())
3796 io_close((IO*)sv, FALSE);
3798 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3799 PerlDir_close(IoDIRP(sv));
3800 IoDIRP(sv) = (DIR*)NULL;
3801 Safefree(IoTOP_NAME(sv));
3802 Safefree(IoFMT_NAME(sv));
3803 Safefree(IoBOTTOM_NAME(sv));
3818 SvREFCNT_dec(LvTARG(sv));
3822 Safefree(GvNAME(sv));
3823 /* cannot decrease stash refcount yet, as we might recursively delete
3824 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3825 of stash until current sv is completely gone.
3826 -- JohnPC, 27 Mar 1998 */
3827 stash = GvSTASH(sv);
3833 (void)SvOOK_off(sv);
3841 SvREFCNT_dec(SvRV(sv));
3843 else if (SvPVX(sv) && SvLEN(sv))
3844 Safefree(SvPVX(sv));
3854 switch (SvTYPE(sv)) {
3870 del_XPVIV(SvANY(sv));
3873 del_XPVNV(SvANY(sv));
3876 del_XPVMG(SvANY(sv));
3879 del_XPVLV(SvANY(sv));
3882 del_XPVAV(SvANY(sv));
3885 del_XPVHV(SvANY(sv));
3888 del_XPVCV(SvANY(sv));
3891 del_XPVGV(SvANY(sv));
3892 /* code duplication for increased performance. */
3893 SvFLAGS(sv) &= SVf_BREAK;
3894 SvFLAGS(sv) |= SVTYPEMASK;
3895 /* decrease refcount of the stash that owns this GV, if any */
3897 SvREFCNT_dec(stash);
3898 return; /* not break, SvFLAGS reset already happened */
3900 del_XPVBM(SvANY(sv));
3903 del_XPVFM(SvANY(sv));
3906 del_XPVIO(SvANY(sv));
3909 SvFLAGS(sv) &= SVf_BREAK;
3910 SvFLAGS(sv) |= SVTYPEMASK;
3914 Perl_sv_newref(pTHX_ SV *sv)
3917 ATOMIC_INC(SvREFCNT(sv));
3924 Free the memory used by an SV.
3930 Perl_sv_free(pTHX_ SV *sv)
3933 int refcount_is_zero;
3937 if (SvREFCNT(sv) == 0) {
3938 if (SvFLAGS(sv) & SVf_BREAK)
3940 if (PL_in_clean_all) /* All is fair */
3942 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3943 /* make sure SvREFCNT(sv)==0 happens very seldom */
3944 SvREFCNT(sv) = (~(U32)0)/2;
3947 if (ckWARN_d(WARN_INTERNAL))
3948 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3951 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3952 if (!refcount_is_zero)
3956 if (ckWARN_d(WARN_DEBUGGING))
3957 Perl_warner(aTHX_ WARN_DEBUGGING,
3958 "Attempt to free temp prematurely: SV 0x%"UVxf,
3963 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3964 /* make sure SvREFCNT(sv)==0 happens very seldom */
3965 SvREFCNT(sv) = (~(U32)0)/2;
3976 Returns the length of the string in the SV. See also C<SvCUR>.
3982 Perl_sv_len(pTHX_ register SV *sv)
3991 len = mg_length(sv);
3993 junk = SvPV(sv, len);
3998 =for apidoc sv_len_utf8
4000 Returns the number of characters in the string in an SV, counting wide
4001 UTF8 bytes as a single character.
4007 Perl_sv_len_utf8(pTHX_ register SV *sv)
4018 len = mg_length(sv);
4021 s = (U8*)SvPV(sv, len);
4032 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4037 I32 uoffset = *offsetp;
4043 start = s = (U8*)SvPV(sv, len);
4045 while (s < send && uoffset--)
4049 *offsetp = s - start;
4053 while (s < send && ulen--)
4063 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4072 s = (U8*)SvPV(sv, len);
4074 Perl_croak(aTHX_ "panic: bad byte offset");
4075 send = s + *offsetp;
4083 if (ckWARN_d(WARN_UTF8))
4084 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4094 Returns a boolean indicating whether the strings in the two SVs are
4101 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4108 bool pv1tmp = FALSE;
4109 bool pv2tmp = FALSE;
4116 pv1 = SvPV(sv1, cur1);
4123 pv2 = SvPV(sv2, cur2);
4125 /* do not utf8ize the comparands as a side-effect */
4126 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE && 0) {
4128 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4132 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4138 eq = memEQ(pv1, pv2, cur1);
4151 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4152 string in C<sv1> is less than, equal to, or greater than the string in
4159 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4164 bool pv1tmp = FALSE;
4165 bool pv2tmp = FALSE;
4172 pv1 = SvPV(sv1, cur1);
4179 pv2 = SvPV(sv2, cur2);
4181 /* do not utf8ize the comparands as a side-effect */
4182 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4184 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4188 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4194 cmp = cur2 ? -1 : 0;
4198 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4201 cmp = retval < 0 ? -1 : 1;
4202 } else if (cur1 == cur2) {
4205 cmp = cur1 < cur2 ? -1 : 1;
4218 =for apidoc sv_cmp_locale
4220 Compares the strings in two SVs in a locale-aware manner. See
4227 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4229 #ifdef USE_LOCALE_COLLATE
4235 if (PL_collation_standard)
4239 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4241 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4243 if (!pv1 || !len1) {
4254 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4257 return retval < 0 ? -1 : 1;
4260 * When the result of collation is equality, that doesn't mean
4261 * that there are no differences -- some locales exclude some
4262 * characters from consideration. So to avoid false equalities,
4263 * we use the raw string as a tiebreaker.
4269 #endif /* USE_LOCALE_COLLATE */
4271 return sv_cmp(sv1, sv2);
4274 #ifdef USE_LOCALE_COLLATE
4276 * Any scalar variable may carry an 'o' magic that contains the
4277 * scalar data of the variable transformed to such a format that
4278 * a normal memory comparison can be used to compare the data
4279 * according to the locale settings.
4282 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4286 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4287 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4292 Safefree(mg->mg_ptr);
4294 if ((xf = mem_collxfrm(s, len, &xlen))) {
4295 if (SvREADONLY(sv)) {
4298 return xf + sizeof(PL_collation_ix);
4301 sv_magic(sv, 0, 'o', 0, 0);
4302 mg = mg_find(sv, 'o');
4315 if (mg && mg->mg_ptr) {
4317 return mg->mg_ptr + sizeof(PL_collation_ix);
4325 #endif /* USE_LOCALE_COLLATE */
4330 Get a line from the filehandle and store it into the SV, optionally
4331 appending to the currently-stored string.
4337 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4342 register STDCHAR rslast;
4343 register STDCHAR *bp;
4347 SV_CHECK_THINKFIRST(sv);
4348 (void)SvUPGRADE(sv, SVt_PV);
4352 if (RsSNARF(PL_rs)) {
4356 else if (RsRECORD(PL_rs)) {
4357 I32 recsize, bytesread;
4360 /* Grab the size of the record we're getting */
4361 recsize = SvIV(SvRV(PL_rs));
4362 (void)SvPOK_only(sv); /* Validate pointer */
4363 buffer = SvGROW(sv, recsize + 1);
4366 /* VMS wants read instead of fread, because fread doesn't respect */
4367 /* RMS record boundaries. This is not necessarily a good thing to be */
4368 /* doing, but we've got no other real choice */
4369 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4371 bytesread = PerlIO_read(fp, buffer, recsize);
4373 SvCUR_set(sv, bytesread);
4374 buffer[bytesread] = '\0';
4375 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4377 else if (RsPARA(PL_rs)) {
4382 rsptr = SvPV(PL_rs, rslen);
4383 rslast = rslen ? rsptr[rslen - 1] : '\0';
4385 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4386 do { /* to make sure file boundaries work right */
4389 i = PerlIO_getc(fp);
4393 PerlIO_ungetc(fp,i);
4399 /* See if we know enough about I/O mechanism to cheat it ! */
4401 /* This used to be #ifdef test - it is made run-time test for ease
4402 of abstracting out stdio interface. One call should be cheap
4403 enough here - and may even be a macro allowing compile
4407 if (PerlIO_fast_gets(fp)) {
4410 * We're going to steal some values from the stdio struct
4411 * and put EVERYTHING in the innermost loop into registers.
4413 register STDCHAR *ptr;
4417 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4418 /* An ungetc()d char is handled separately from the regular
4419 * buffer, so we getc() it back out and stuff it in the buffer.
4421 i = PerlIO_getc(fp);
4422 if (i == EOF) return 0;
4423 *(--((*fp)->_ptr)) = (unsigned char) i;
4427 /* Here is some breathtakingly efficient cheating */
4429 cnt = PerlIO_get_cnt(fp); /* get count into register */
4430 (void)SvPOK_only(sv); /* validate pointer */
4431 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4432 if (cnt > 80 && SvLEN(sv) > append) {
4433 shortbuffered = cnt - SvLEN(sv) + append + 1;
4434 cnt -= shortbuffered;
4438 /* remember that cnt can be negative */
4439 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4444 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4445 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4446 DEBUG_P(PerlIO_printf(Perl_debug_log,
4447 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4448 DEBUG_P(PerlIO_printf(Perl_debug_log,
4449 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4450 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4451 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4456 while (cnt > 0) { /* this | eat */
4458 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4459 goto thats_all_folks; /* screams | sed :-) */
4463 Copy(ptr, bp, cnt, char); /* this | eat */
4464 bp += cnt; /* screams | dust */
4465 ptr += cnt; /* louder | sed :-) */
4470 if (shortbuffered) { /* oh well, must extend */
4471 cnt = shortbuffered;
4473 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4475 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4476 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4480 DEBUG_P(PerlIO_printf(Perl_debug_log,
4481 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4482 PTR2UV(ptr),(long)cnt));
4483 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4484 DEBUG_P(PerlIO_printf(Perl_debug_log,
4485 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4486 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4487 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4488 /* This used to call 'filbuf' in stdio form, but as that behaves like
4489 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4490 another abstraction. */
4491 i = PerlIO_getc(fp); /* get more characters */
4492 DEBUG_P(PerlIO_printf(Perl_debug_log,
4493 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4494 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4495 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4496 cnt = PerlIO_get_cnt(fp);
4497 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4498 DEBUG_P(PerlIO_printf(Perl_debug_log,
4499 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4501 if (i == EOF) /* all done for ever? */
4502 goto thats_really_all_folks;
4504 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4506 SvGROW(sv, bpx + cnt + 2);
4507 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4509 *bp++ = i; /* store character from PerlIO_getc */
4511 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4512 goto thats_all_folks;
4516 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4517 memNE((char*)bp - rslen, rsptr, rslen))
4518 goto screamer; /* go back to the fray */
4519 thats_really_all_folks:
4521 cnt += shortbuffered;
4522 DEBUG_P(PerlIO_printf(Perl_debug_log,
4523 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4524 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4525 DEBUG_P(PerlIO_printf(Perl_debug_log,
4526 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4527 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4528 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4530 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4531 DEBUG_P(PerlIO_printf(Perl_debug_log,
4532 "Screamer: done, len=%ld, string=|%.*s|\n",
4533 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4538 /*The big, slow, and stupid way */
4541 /* Need to work around EPOC SDK features */
4542 /* On WINS: MS VC5 generates calls to _chkstk, */
4543 /* if a `large' stack frame is allocated */
4544 /* gcc on MARM does not generate calls like these */
4550 register STDCHAR *bpe = buf + sizeof(buf);
4552 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4553 ; /* keep reading */
4557 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4558 /* Accomodate broken VAXC compiler, which applies U8 cast to
4559 * both args of ?: operator, causing EOF to change into 255
4561 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4565 sv_catpvn(sv, (char *) buf, cnt);
4567 sv_setpvn(sv, (char *) buf, cnt);
4569 if (i != EOF && /* joy */
4571 SvCUR(sv) < rslen ||
4572 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4576 * If we're reading from a TTY and we get a short read,
4577 * indicating that the user hit his EOF character, we need
4578 * to notice it now, because if we try to read from the TTY
4579 * again, the EOF condition will disappear.
4581 * The comparison of cnt to sizeof(buf) is an optimization
4582 * that prevents unnecessary calls to feof().
4586 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4591 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4592 while (i != EOF) { /* to make sure file boundaries work right */
4593 i = PerlIO_getc(fp);
4595 PerlIO_ungetc(fp,i);
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)) {
4626 if (PL_curcop != &PL_compiling)
4627 Perl_croak(aTHX_ PL_no_modify);
4631 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4633 i = PTR2IV(SvRV(sv));
4638 flags = SvFLAGS(sv);
4639 if (flags & SVp_NOK) {
4640 (void)SvNOK_only(sv);
4644 if (flags & SVp_IOK) {
4646 if (SvUVX(sv) == UV_MAX)
4647 sv_setnv(sv, (NV)UV_MAX + 1.0);
4649 (void)SvIOK_only_UV(sv);
4652 if (SvIVX(sv) == IV_MAX)
4653 sv_setnv(sv, (NV)IV_MAX + 1.0);
4655 (void)SvIOK_only(sv);
4661 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4662 if ((flags & SVTYPEMASK) < SVt_PVNV)
4663 sv_upgrade(sv, SVt_NV);
4665 (void)SvNOK_only(sv);
4669 while (isALPHA(*d)) d++;
4670 while (isDIGIT(*d)) d++;
4672 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4676 while (d >= SvPVX(sv)) {
4684 /* MKS: The original code here died if letters weren't consecutive.
4685 * at least it didn't have to worry about non-C locales. The
4686 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4687 * arranged in order (although not consecutively) and that only
4688 * [A-Za-z] are accepted by isALPHA in the C locale.
4690 if (*d != 'z' && *d != 'Z') {
4691 do { ++*d; } while (!isALPHA(*d));
4694 *(d--) -= 'z' - 'a';
4699 *(d--) -= 'z' - 'a' + 1;
4703 /* oh,oh, the number grew */
4704 SvGROW(sv, SvCUR(sv) + 2);
4706 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4717 Auto-decrement of the value in the SV.
4723 Perl_sv_dec(pTHX_ register SV *sv)
4731 if (SvTHINKFIRST(sv)) {
4732 if (SvREADONLY(sv)) {
4734 if (PL_curcop != &PL_compiling)
4735 Perl_croak(aTHX_ PL_no_modify);
4739 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4741 i = PTR2IV(SvRV(sv));
4746 flags = SvFLAGS(sv);
4747 if (flags & SVp_NOK) {
4749 (void)SvNOK_only(sv);
4752 if (flags & SVp_IOK) {
4754 if (SvUVX(sv) == 0) {
4755 (void)SvIOK_only(sv);
4759 (void)SvIOK_only_UV(sv);
4763 if (SvIVX(sv) == IV_MIN)
4764 sv_setnv(sv, (NV)IV_MIN - 1.0);
4766 (void)SvIOK_only(sv);
4772 if (!(flags & SVp_POK)) {
4773 if ((flags & SVTYPEMASK) < SVt_PVNV)
4774 sv_upgrade(sv, SVt_NV);
4776 (void)SvNOK_only(sv);
4779 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4783 =for apidoc sv_mortalcopy
4785 Creates a new SV which is a copy of the original SV. The new SV is marked
4791 /* Make a string that will exist for the duration of the expression
4792 * evaluation. Actually, it may have to last longer than that, but
4793 * hopefully we won't free it until it has been assigned to a
4794 * permanent location. */
4797 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4803 sv_setsv(sv,oldstr);
4805 PL_tmps_stack[++PL_tmps_ix] = sv;
4811 =for apidoc sv_newmortal
4813 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4819 Perl_sv_newmortal(pTHX)
4825 SvFLAGS(sv) = SVs_TEMP;
4827 PL_tmps_stack[++PL_tmps_ix] = sv;
4832 =for apidoc sv_2mortal
4834 Marks an SV as mortal. The SV will be destroyed when the current context
4840 /* same thing without the copying */
4843 Perl_sv_2mortal(pTHX_ register SV *sv)
4848 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4851 PL_tmps_stack[++PL_tmps_ix] = sv;
4859 Creates a new SV and copies a string into it. The reference count for the
4860 SV is set to 1. If C<len> is zero, Perl will compute the length using
4861 strlen(). For efficiency, consider using C<newSVpvn> instead.
4867 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4874 sv_setpvn(sv,s,len);
4879 =for apidoc newSVpvn
4881 Creates a new SV and copies a string into it. The reference count for the
4882 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4883 string. You are responsible for ensuring that the source string is at least
4890 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4895 sv_setpvn(sv,s,len);
4899 #if defined(PERL_IMPLICIT_CONTEXT)
4901 Perl_newSVpvf_nocontext(const char* pat, ...)
4906 va_start(args, pat);
4907 sv = vnewSVpvf(pat, &args);
4914 =for apidoc newSVpvf
4916 Creates a new SV an initialize it with the string formatted like
4923 Perl_newSVpvf(pTHX_ const char* pat, ...)
4927 va_start(args, pat);
4928 sv = vnewSVpvf(pat, &args);
4934 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4938 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4945 Creates a new SV and copies a floating point value into it.
4946 The reference count for the SV is set to 1.
4952 Perl_newSVnv(pTHX_ NV n)
4964 Creates a new SV and copies an integer into it. The reference count for the
4971 Perl_newSViv(pTHX_ IV i)
4983 Creates a new SV and copies an unsigned integer into it.
4984 The reference count for the SV is set to 1.
4990 Perl_newSVuv(pTHX_ UV u)
5000 =for apidoc newRV_noinc
5002 Creates an RV wrapper for an SV. The reference count for the original
5003 SV is B<not> incremented.
5009 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5015 sv_upgrade(sv, SVt_RV);
5022 /* newRV_inc is #defined to newRV in sv.h */
5024 Perl_newRV(pTHX_ SV *tmpRef)
5026 return newRV_noinc(SvREFCNT_inc(tmpRef));
5032 Creates a new SV which is an exact duplicate of the original SV.
5037 /* make an exact duplicate of old */
5040 Perl_newSVsv(pTHX_ register SV *old)
5047 if (SvTYPE(old) == SVTYPEMASK) {
5048 if (ckWARN_d(WARN_INTERNAL))
5049 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5064 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5072 char todo[PERL_UCHAR_MAX+1];
5077 if (!*s) { /* reset ?? searches */
5078 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5079 pm->op_pmdynflags &= ~PMdf_USED;
5084 /* reset variables */
5086 if (!HvARRAY(stash))
5089 Zero(todo, 256, char);
5091 i = (unsigned char)*s;
5095 max = (unsigned char)*s++;
5096 for ( ; i <= max; i++) {
5099 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5100 for (entry = HvARRAY(stash)[i];
5102 entry = HeNEXT(entry))
5104 if (!todo[(U8)*HeKEY(entry)])
5106 gv = (GV*)HeVAL(entry);
5108 if (SvTHINKFIRST(sv)) {
5109 if (!SvREADONLY(sv) && SvROK(sv))
5114 if (SvTYPE(sv) >= SVt_PV) {
5116 if (SvPVX(sv) != Nullch)
5123 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5125 #ifndef VMS /* VMS has no environ array */
5127 environ[0] = Nullch;
5136 Perl_sv_2io(pTHX_ SV *sv)
5142 switch (SvTYPE(sv)) {
5150 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5154 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5156 return sv_2io(SvRV(sv));
5157 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5163 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5170 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5177 return *gvp = Nullgv, Nullcv;
5178 switch (SvTYPE(sv)) {
5198 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5199 tryAMAGICunDEREF(to_cv);
5202 if (SvTYPE(sv) == SVt_PVCV) {
5211 Perl_croak(aTHX_ "Not a subroutine reference");
5216 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5222 if (lref && !GvCVu(gv)) {
5225 tmpsv = NEWSV(704,0);
5226 gv_efullname3(tmpsv, gv, Nullch);
5227 /* XXX this is probably not what they think they're getting.
5228 * It has the same effect as "sub name;", i.e. just a forward
5230 newSUB(start_subparse(FALSE, 0),
5231 newSVOP(OP_CONST, 0, tmpsv),
5236 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5245 Returns true if the SV has a true value by Perl's rules.
5251 Perl_sv_true(pTHX_ register SV *sv)
5258 if ((tXpv = (XPV*)SvANY(sv)) &&
5259 (tXpv->xpv_cur > 1 ||
5260 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5267 return SvIVX(sv) != 0;
5270 return SvNVX(sv) != 0.0;
5272 return sv_2bool(sv);
5278 Perl_sv_iv(pTHX_ register SV *sv)
5282 return (IV)SvUVX(sv);
5289 Perl_sv_uv(pTHX_ register SV *sv)
5294 return (UV)SvIVX(sv);
5300 Perl_sv_nv(pTHX_ register SV *sv)
5308 Perl_sv_pv(pTHX_ SV *sv)
5315 return sv_2pv(sv, &n_a);
5319 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5325 return sv_2pv(sv, lp);
5329 =for apidoc sv_pvn_force
5331 Get a sensible string out of the SV somehow.
5337 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5341 if (SvTHINKFIRST(sv) && !SvROK(sv))
5342 sv_force_normal(sv);
5348 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5350 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5351 PL_op_name[PL_op->op_type]);
5355 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5360 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5361 SvGROW(sv, len + 1);
5362 Move(s,SvPVX(sv),len,char);
5367 SvPOK_on(sv); /* validate pointer */
5369 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5370 PTR2UV(sv),SvPVX(sv)));
5377 Perl_sv_pvbyte(pTHX_ SV *sv)
5383 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5385 return sv_pvn(sv,lp);
5389 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5391 return sv_pvn_force(sv,lp);
5395 Perl_sv_pvutf8(pTHX_ SV *sv)
5397 sv_utf8_upgrade(sv);
5402 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5404 sv_utf8_upgrade(sv);
5405 return sv_pvn(sv,lp);
5409 =for apidoc sv_pvutf8n_force
5411 Get a sensible UTF8-encoded string out of the SV somehow. See
5418 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5420 sv_utf8_upgrade(sv);
5421 return sv_pvn_force(sv,lp);
5425 =for apidoc sv_reftype
5427 Returns a string describing what the SV is a reference to.
5433 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5435 if (ob && SvOBJECT(sv))
5436 return HvNAME(SvSTASH(sv));
5438 switch (SvTYPE(sv)) {
5452 case SVt_PVLV: return "LVALUE";
5453 case SVt_PVAV: return "ARRAY";
5454 case SVt_PVHV: return "HASH";
5455 case SVt_PVCV: return "CODE";
5456 case SVt_PVGV: return "GLOB";
5457 case SVt_PVFM: return "FORMAT";
5458 case SVt_PVIO: return "IO";
5459 default: return "UNKNOWN";
5465 =for apidoc sv_isobject
5467 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5468 object. If the SV is not an RV, or if the object is not blessed, then this
5475 Perl_sv_isobject(pTHX_ SV *sv)
5492 Returns a boolean indicating whether the SV is blessed into the specified
5493 class. This does not check for subtypes; use C<sv_derived_from> to verify
5494 an inheritance relationship.
5500 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5512 return strEQ(HvNAME(SvSTASH(sv)), name);
5518 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5519 it will be upgraded to one. If C<classname> is non-null then the new SV will
5520 be blessed in the specified package. The new SV is returned and its
5521 reference count is 1.
5527 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5534 SV_CHECK_THINKFIRST(rv);
5537 if (SvTYPE(rv) < SVt_RV)
5538 sv_upgrade(rv, SVt_RV);
5545 HV* stash = gv_stashpv(classname, TRUE);
5546 (void)sv_bless(rv, stash);
5552 =for apidoc sv_setref_pv
5554 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5555 argument will be upgraded to an RV. That RV will be modified to point to
5556 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5557 into the SV. The C<classname> argument indicates the package for the
5558 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5559 will be returned and will have a reference count of 1.
5561 Do not use with other Perl types such as HV, AV, SV, CV, because those
5562 objects will become corrupted by the pointer copy process.
5564 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5570 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5573 sv_setsv(rv, &PL_sv_undef);
5577 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5582 =for apidoc sv_setref_iv
5584 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5585 argument will be upgraded to an RV. That RV will be modified to point to
5586 the new SV. The C<classname> argument indicates the package for the
5587 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5588 will be returned and will have a reference count of 1.
5594 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5596 sv_setiv(newSVrv(rv,classname), iv);
5601 =for apidoc sv_setref_nv
5603 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5604 argument will be upgraded to an RV. That RV will be modified to point to
5605 the new SV. The C<classname> argument indicates the package for the
5606 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5607 will be returned and will have a reference count of 1.
5613 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5615 sv_setnv(newSVrv(rv,classname), nv);
5620 =for apidoc sv_setref_pvn
5622 Copies a string into a new SV, optionally blessing the SV. The length of the
5623 string must be specified with C<n>. The C<rv> argument will be upgraded to
5624 an RV. That RV will be modified to point to the new SV. The C<classname>
5625 argument indicates the package for the blessing. Set C<classname> to
5626 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5627 a reference count of 1.
5629 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5635 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5637 sv_setpvn(newSVrv(rv,classname), pv, n);
5642 =for apidoc sv_bless
5644 Blesses an SV into a specified package. The SV must be an RV. The package
5645 must be designated by its stash (see C<gv_stashpv()>). The reference count
5646 of the SV is unaffected.
5652 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5657 Perl_croak(aTHX_ "Can't bless non-reference value");
5659 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5660 if (SvREADONLY(tmpRef))
5661 Perl_croak(aTHX_ PL_no_modify);
5662 if (SvOBJECT(tmpRef)) {
5663 if (SvTYPE(tmpRef) != SVt_PVIO)
5665 SvREFCNT_dec(SvSTASH(tmpRef));
5668 SvOBJECT_on(tmpRef);
5669 if (SvTYPE(tmpRef) != SVt_PVIO)
5671 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5672 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5683 S_sv_unglob(pTHX_ SV *sv)
5687 assert(SvTYPE(sv) == SVt_PVGV);
5692 SvREFCNT_dec(GvSTASH(sv));
5693 GvSTASH(sv) = Nullhv;
5695 sv_unmagic(sv, '*');
5696 Safefree(GvNAME(sv));
5699 /* need to keep SvANY(sv) in the right arena */
5700 xpvmg = new_XPVMG();
5701 StructCopy(SvANY(sv), xpvmg, XPVMG);
5702 del_XPVGV(SvANY(sv));
5705 SvFLAGS(sv) &= ~SVTYPEMASK;
5706 SvFLAGS(sv) |= SVt_PVMG;
5710 =for apidoc sv_unref
5712 Unsets the RV status of the SV, and decrements the reference count of
5713 whatever was being referenced by the RV. This can almost be thought of
5714 as a reversal of C<newSVrv>. See C<SvROK_off>.
5720 Perl_sv_unref(pTHX_ SV *sv)
5724 if (SvWEAKREF(sv)) {
5732 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5735 sv_2mortal(rv); /* Schedule for freeing later */
5739 Perl_sv_taint(pTHX_ SV *sv)
5741 sv_magic((sv), Nullsv, 't', Nullch, 0);
5745 Perl_sv_untaint(pTHX_ SV *sv)
5747 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5748 MAGIC *mg = mg_find(sv, 't');
5755 Perl_sv_tainted(pTHX_ SV *sv)
5757 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5758 MAGIC *mg = mg_find(sv, 't');
5759 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5766 =for apidoc sv_setpviv
5768 Copies an integer into the given SV, also updating its string value.
5769 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5775 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5777 char buf[TYPE_CHARS(UV)];
5779 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5781 sv_setpvn(sv, ptr, ebuf - ptr);
5786 =for apidoc sv_setpviv_mg
5788 Like C<sv_setpviv>, but also handles 'set' magic.
5794 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5796 char buf[TYPE_CHARS(UV)];
5798 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5800 sv_setpvn(sv, ptr, ebuf - ptr);
5804 #if defined(PERL_IMPLICIT_CONTEXT)
5806 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5810 va_start(args, pat);
5811 sv_vsetpvf(sv, pat, &args);
5817 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5821 va_start(args, pat);
5822 sv_vsetpvf_mg(sv, pat, &args);
5828 =for apidoc sv_setpvf
5830 Processes its arguments like C<sprintf> and sets an SV to the formatted
5831 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5837 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5840 va_start(args, pat);
5841 sv_vsetpvf(sv, pat, &args);
5846 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5848 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5852 =for apidoc sv_setpvf_mg
5854 Like C<sv_setpvf>, but also handles 'set' magic.
5860 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5863 va_start(args, pat);
5864 sv_vsetpvf_mg(sv, pat, &args);
5869 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5871 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5875 #if defined(PERL_IMPLICIT_CONTEXT)
5877 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5881 va_start(args, pat);
5882 sv_vcatpvf(sv, pat, &args);
5887 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5891 va_start(args, pat);
5892 sv_vcatpvf_mg(sv, pat, &args);
5898 =for apidoc sv_catpvf
5900 Processes its arguments like C<sprintf> and appends the formatted output
5901 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5902 typically be called after calling this function to handle 'set' magic.
5908 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5911 va_start(args, pat);
5912 sv_vcatpvf(sv, pat, &args);
5917 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5919 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5923 =for apidoc sv_catpvf_mg
5925 Like C<sv_catpvf>, but also handles 'set' magic.
5931 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5934 va_start(args, pat);
5935 sv_vcatpvf_mg(sv, pat, &args);
5940 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5942 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5947 =for apidoc sv_vsetpvfn
5949 Works like C<vcatpvfn> but copies the text into the SV instead of
5956 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5958 sv_setpvn(sv, "", 0);
5959 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5963 =for apidoc sv_vcatpvfn
5965 Processes its arguments like C<vsprintf> and appends the formatted output
5966 to an SV. Uses an array of SVs if the C style variable argument list is
5967 missing (NULL). When running with taint checks enabled, indicates via
5968 C<maybe_tainted> if results are untrustworthy (often due to the use of
5975 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5983 static char nullstr[] = "(null)";
5986 /* no matter what, this is a string now */
5987 (void)SvPV_force(sv, origlen);
5989 /* special-case "", "%s", and "%_" */
5992 if (patlen == 2 && pat[0] == '%') {
5996 char *s = va_arg(*args, char*);
5997 sv_catpv(sv, s ? s : nullstr);
5999 else if (svix < svmax) {
6000 sv_catsv(sv, *svargs);
6001 if (DO_UTF8(*svargs))
6007 argsv = va_arg(*args, SV*);
6008 sv_catsv(sv, argsv);
6013 /* See comment on '_' below */
6018 patend = (char*)pat + patlen;
6019 for (p = (char*)pat; p < patend; p = q) {
6022 bool vectorize = FALSE;
6029 bool has_precis = FALSE;
6031 bool is_utf = FALSE;
6034 U8 utf8buf[UTF8_MAXLEN];
6035 STRLEN esignlen = 0;
6037 char *eptr = Nullch;
6039 /* Times 4: a decimal digit takes more than 3 binary digits.
6040 * NV_DIG: mantissa takes than many decimal digits.
6041 * Plus 32: Playing safe. */
6042 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6043 /* large enough for "%#.#f" --chip */
6044 /* what about long double NVs? --jhi */
6047 U8 *vecstr = Null(U8*);
6059 STRLEN dotstrlen = 1;
6061 for (q = p; q < patend && *q != '%'; ++q) ;
6063 sv_catpvn(sv, p, q - p);
6092 case '*': /* printf("%*vX",":",$ipv6addr) */
6097 vecsv = va_arg(*args, SV*);
6098 else if (svix < svmax)
6099 vecsv = svargs[svix++];
6102 dotstr = SvPVx(vecsv,dotstrlen);
6121 case '1': case '2': case '3':
6122 case '4': case '5': case '6':
6123 case '7': case '8': case '9':
6126 width = width * 10 + (*q++ - '0');
6131 i = va_arg(*args, int);
6133 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6135 width = (i < 0) ? -i : i;
6146 i = va_arg(*args, int);
6148 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6149 precis = (i < 0) ? 0 : i;
6155 precis = precis * 10 + (*q++ - '0');
6162 vecsv = va_arg(*args, SV*);
6163 vecstr = (U8*)SvPVx(vecsv,veclen);
6164 utf = DO_UTF8(vecsv);
6166 else if (svix < svmax) {
6167 vecsv = svargs[svix++];
6168 vecstr = (U8*)SvPVx(vecsv,veclen);
6169 utf = DO_UTF8(vecsv);
6189 if (*(q + 1) == 'l') { /* lld */
6216 uv = va_arg(*args, int);
6218 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6219 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6220 eptr = (char*)utf8buf;
6221 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6233 eptr = va_arg(*args, char*);
6235 #ifdef MACOS_TRADITIONAL
6236 /* On MacOS, %#s format is used for Pascal strings */
6241 elen = strlen(eptr);
6244 elen = sizeof nullstr - 1;
6247 else if (svix < svmax) {
6248 argsv = svargs[svix++];
6249 eptr = SvPVx(argsv, elen);
6250 if (DO_UTF8(argsv)) {
6251 if (has_precis && precis < elen) {
6253 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6256 if (width) { /* fudge width (can't fudge elen) */
6257 width += elen - sv_len_utf8(argsv);
6266 * The "%_" hack might have to be changed someday,
6267 * if ISO or ANSI decide to use '_' for something.
6268 * So we keep it hidden from users' code.
6272 argsv = va_arg(*args,SV*);
6273 eptr = SvPVx(argsv, elen);
6279 if (has_precis && elen > precis)
6289 uv = PTR2UV(va_arg(*args, void*));
6291 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
6311 iv = (IV)utf8_to_uv(vecstr, &ulen);
6321 case 'h': iv = (short)va_arg(*args, int); break;
6322 default: iv = va_arg(*args, int); break;
6323 case 'l': iv = va_arg(*args, long); break;
6324 case 'V': iv = va_arg(*args, IV); break;
6326 case 'q': iv = va_arg(*args, Quad_t); break;
6331 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6333 case 'h': iv = (short)iv; break;
6335 case 'l': iv = (long)iv; break;
6338 case 'q': iv = (Quad_t)iv; break;
6345 esignbuf[esignlen++] = plus;
6349 esignbuf[esignlen++] = '-';
6393 uv = utf8_to_uv(vecstr, &ulen);
6403 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6404 default: uv = va_arg(*args, unsigned); break;
6405 case 'l': uv = va_arg(*args, unsigned long); break;
6406 case 'V': uv = va_arg(*args, UV); break;
6408 case 'q': uv = va_arg(*args, Quad_t); break;
6413 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6415 case 'h': uv = (unsigned short)uv; break;
6417 case 'l': uv = (unsigned long)uv; break;
6420 case 'q': uv = (Quad_t)uv; break;
6426 eptr = ebuf + sizeof ebuf;
6432 p = (char*)((c == 'X')
6433 ? "0123456789ABCDEF" : "0123456789abcdef");
6439 esignbuf[esignlen++] = '0';
6440 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6446 *--eptr = '0' + dig;
6448 if (alt && *eptr != '0')
6454 *--eptr = '0' + dig;
6457 esignbuf[esignlen++] = '0';
6458 esignbuf[esignlen++] = 'b';
6461 default: /* it had better be ten or less */
6462 #if defined(PERL_Y2KWARN)
6463 if (ckWARN(WARN_Y2K)) {
6465 char *s = SvPV(sv,n);
6466 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6467 && (n == 2 || !isDIGIT(s[n-3])))
6469 Perl_warner(aTHX_ WARN_Y2K,
6470 "Possible Y2K bug: %%%c %s",
6471 c, "format string following '19'");
6477 *--eptr = '0' + dig;
6478 } while (uv /= base);
6481 elen = (ebuf + sizeof ebuf) - eptr;
6484 zeros = precis - elen;
6485 else if (precis == 0 && elen == 1 && *eptr == '0')
6490 /* FLOATING POINT */
6493 c = 'f'; /* maybe %F isn't supported here */
6499 /* This is evil, but floating point is even more evil */
6503 nv = va_arg(*args, NV);
6505 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6508 if (c != 'e' && c != 'E') {
6510 (void)Perl_frexp(nv, &i);
6511 if (i == PERL_INT_MIN)
6512 Perl_die(aTHX_ "panic: frexp");
6514 need = BIT_DIGITS(i);
6516 need += has_precis ? precis : 6; /* known default */
6520 need += 20; /* fudge factor */
6521 if (PL_efloatsize < need) {
6522 Safefree(PL_efloatbuf);
6523 PL_efloatsize = need + 20; /* more fudge */
6524 New(906, PL_efloatbuf, PL_efloatsize, char);
6525 PL_efloatbuf[0] = '\0';
6528 eptr = ebuf + sizeof ebuf;
6531 #ifdef USE_LONG_DOUBLE
6533 static char const my_prifldbl[] = PERL_PRIfldbl;
6534 char const *p = my_prifldbl + sizeof my_prifldbl - 3;
6535 while (p >= my_prifldbl) { *--eptr = *p--; }
6540 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6545 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6558 STORE_NUMERIC_STANDARD_SET_LOCAL();
6559 if (!was_standard && maybe_tainted)
6560 *maybe_tainted = TRUE;
6561 (void)sprintf(PL_efloatbuf, eptr, nv);
6562 RESTORE_NUMERIC_STANDARD();
6564 eptr = PL_efloatbuf;
6565 elen = strlen(PL_efloatbuf);
6567 #if PRINTF_EXP_DIGITS == 3 /* Shorten exponent */
6568 if (((p = index(eptr, 'e')) || (p = index(eptr, 'E'))) &&
6569 (*++p == '+' || *p == '-') && /* Is there exponent */
6570 *++p == '0') { /* with leading zero? */
6571 DEBUG_c(PerlIO_printf(Perl_debug_log,
6572 ">%s<: '0' at %d from start; "
6573 "elen == %d, width == %d\n",
6574 eptr, p-eptr, elen, width));
6575 Move(p+1, p, 3, char); /* Suppress leading zero */
6576 if (elen == width && /* Fix up padding if */
6577 *(p+2) == '\0') { /* necessary */
6580 Move(eptr+1, eptr+2, elen-1, char);
6584 Move(eptr, eptr+1, elen, char);
6589 *(p+2) == ' '; *(p+3) = '\0';
6592 else if (elen > width)
6602 i = SvCUR(sv) - origlen;
6605 case 'h': *(va_arg(*args, short*)) = i; break;
6606 default: *(va_arg(*args, int*)) = i; break;
6607 case 'l': *(va_arg(*args, long*)) = i; break;
6608 case 'V': *(va_arg(*args, IV*)) = i; break;
6610 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6614 else if (svix < svmax)
6615 sv_setuv_mg(svargs[svix++], (UV)i);
6616 continue; /* not "break" */
6623 if (!args && ckWARN(WARN_PRINTF) &&
6624 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6625 SV *msg = sv_newmortal();
6626 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6627 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6630 Perl_sv_catpvf(aTHX_ msg,
6631 "\"%%%c\"", c & 0xFF);
6633 Perl_sv_catpvf(aTHX_ msg,
6634 "\"%%\\%03"UVof"\"",
6637 sv_catpv(msg, "end of string");
6638 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6641 /* output mangled stuff ... */
6647 /* ... right here, because formatting flags should not apply */
6648 SvGROW(sv, SvCUR(sv) + elen + 1);
6650 memcpy(p, eptr, elen);
6653 SvCUR(sv) = p - SvPVX(sv);
6654 continue; /* not "break" */
6657 have = esignlen + zeros + elen;
6658 need = (have > width ? have : width);
6661 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6663 if (esignlen && fill == '0') {
6664 for (i = 0; i < esignlen; i++)
6668 memset(p, fill, gap);
6671 if (esignlen && fill != '0') {
6672 for (i = 0; i < esignlen; i++)
6676 for (i = zeros; i; i--)
6680 memcpy(p, eptr, elen);
6684 memset(p, ' ', gap);
6689 memcpy(p, dotstr, dotstrlen);
6693 vectorize = FALSE; /* done iterating over vecstr */
6698 SvCUR(sv) = p - SvPVX(sv);
6706 #if defined(USE_ITHREADS)
6708 #if defined(USE_THREADS)
6709 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6712 #ifndef GpREFCNT_inc
6713 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6717 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6718 #define av_dup(s) (AV*)sv_dup((SV*)s)
6719 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6720 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6721 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6722 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6723 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6724 #define io_dup(s) (IO*)sv_dup((SV*)s)
6725 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6726 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6727 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6728 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6729 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6732 Perl_re_dup(pTHX_ REGEXP *r)
6734 /* XXX fix when pmop->op_pmregexp becomes shared */
6735 return ReREFCNT_inc(r);
6739 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6743 return (PerlIO*)NULL;
6745 /* look for it in the table first */
6746 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6750 /* create anew and remember what it is */
6751 ret = PerlIO_fdupopen(fp);
6752 ptr_table_store(PL_ptr_table, fp, ret);
6757 Perl_dirp_dup(pTHX_ DIR *dp)
6766 Perl_gp_dup(pTHX_ GP *gp)
6771 /* look for it in the table first */
6772 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6776 /* create anew and remember what it is */
6777 Newz(0, ret, 1, GP);
6778 ptr_table_store(PL_ptr_table, gp, ret);
6781 ret->gp_refcnt = 0; /* must be before any other dups! */
6782 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6783 ret->gp_io = io_dup_inc(gp->gp_io);
6784 ret->gp_form = cv_dup_inc(gp->gp_form);
6785 ret->gp_av = av_dup_inc(gp->gp_av);
6786 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6787 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6788 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6789 ret->gp_cvgen = gp->gp_cvgen;
6790 ret->gp_flags = gp->gp_flags;
6791 ret->gp_line = gp->gp_line;
6792 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6797 Perl_mg_dup(pTHX_ MAGIC *mg)
6799 MAGIC *mgret = (MAGIC*)NULL;
6802 return (MAGIC*)NULL;
6803 /* look for it in the table first */
6804 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6808 for (; mg; mg = mg->mg_moremagic) {
6810 Newz(0, nmg, 1, MAGIC);
6814 mgprev->mg_moremagic = nmg;
6815 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6816 nmg->mg_private = mg->mg_private;
6817 nmg->mg_type = mg->mg_type;
6818 nmg->mg_flags = mg->mg_flags;
6819 if (mg->mg_type == 'r') {
6820 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6823 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6824 ? sv_dup_inc(mg->mg_obj)
6825 : sv_dup(mg->mg_obj);
6827 nmg->mg_len = mg->mg_len;
6828 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6829 if (mg->mg_ptr && mg->mg_type != 'g') {
6830 if (mg->mg_len >= 0) {
6831 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6832 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6833 AMT *amtp = (AMT*)mg->mg_ptr;
6834 AMT *namtp = (AMT*)nmg->mg_ptr;
6836 for (i = 1; i < NofAMmeth; i++) {
6837 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6841 else if (mg->mg_len == HEf_SVKEY)
6842 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6850 Perl_ptr_table_new(pTHX)
6853 Newz(0, tbl, 1, PTR_TBL_t);
6856 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6861 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6863 PTR_TBL_ENT_t *tblent;
6864 UV hash = PTR2UV(sv);
6866 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6867 for (; tblent; tblent = tblent->next) {
6868 if (tblent->oldval == sv)
6869 return tblent->newval;
6875 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6877 PTR_TBL_ENT_t *tblent, **otblent;
6878 /* XXX this may be pessimal on platforms where pointers aren't good
6879 * hash values e.g. if they grow faster in the most significant
6881 UV hash = PTR2UV(oldv);
6885 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6886 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6887 if (tblent->oldval == oldv) {
6888 tblent->newval = newv;
6893 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6894 tblent->oldval = oldv;
6895 tblent->newval = newv;
6896 tblent->next = *otblent;
6899 if (i && tbl->tbl_items > tbl->tbl_max)
6900 ptr_table_split(tbl);
6904 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6906 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6907 UV oldsize = tbl->tbl_max + 1;
6908 UV newsize = oldsize * 2;
6911 Renew(ary, newsize, PTR_TBL_ENT_t*);
6912 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6913 tbl->tbl_max = --newsize;
6915 for (i=0; i < oldsize; i++, ary++) {
6916 PTR_TBL_ENT_t **curentp, **entp, *ent;
6919 curentp = ary + oldsize;
6920 for (entp = ary, ent = *ary; ent; ent = *entp) {
6921 if ((newsize & PTR2UV(ent->oldval)) != i) {
6923 ent->next = *curentp;
6938 Perl_sv_dup(pTHX_ SV *sstr)
6942 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6944 /* look for it in the table first */
6945 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6949 /* create anew and remember what it is */
6951 ptr_table_store(PL_ptr_table, sstr, dstr);
6954 SvFLAGS(dstr) = SvFLAGS(sstr);
6955 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6956 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6959 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6960 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6961 PL_watch_pvx, SvPVX(sstr));
6964 switch (SvTYPE(sstr)) {
6969 SvANY(dstr) = new_XIV();
6970 SvIVX(dstr) = SvIVX(sstr);
6973 SvANY(dstr) = new_XNV();
6974 SvNVX(dstr) = SvNVX(sstr);
6977 SvANY(dstr) = new_XRV();
6978 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6981 SvANY(dstr) = new_XPV();
6982 SvCUR(dstr) = SvCUR(sstr);
6983 SvLEN(dstr) = SvLEN(sstr);
6985 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6986 else if (SvPVX(sstr) && SvLEN(sstr))
6987 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6989 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6992 SvANY(dstr) = new_XPVIV();
6993 SvCUR(dstr) = SvCUR(sstr);
6994 SvLEN(dstr) = SvLEN(sstr);
6995 SvIVX(dstr) = SvIVX(sstr);
6997 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6998 else if (SvPVX(sstr) && SvLEN(sstr))
6999 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7001 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7004 SvANY(dstr) = new_XPVNV();
7005 SvCUR(dstr) = SvCUR(sstr);
7006 SvLEN(dstr) = SvLEN(sstr);
7007 SvIVX(dstr) = SvIVX(sstr);
7008 SvNVX(dstr) = SvNVX(sstr);
7010 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7011 else if (SvPVX(sstr) && SvLEN(sstr))
7012 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7014 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7017 SvANY(dstr) = new_XPVMG();
7018 SvCUR(dstr) = SvCUR(sstr);
7019 SvLEN(dstr) = SvLEN(sstr);
7020 SvIVX(dstr) = SvIVX(sstr);
7021 SvNVX(dstr) = SvNVX(sstr);
7022 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7023 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7025 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7026 else if (SvPVX(sstr) && SvLEN(sstr))
7027 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7029 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7032 SvANY(dstr) = new_XPVBM();
7033 SvCUR(dstr) = SvCUR(sstr);
7034 SvLEN(dstr) = SvLEN(sstr);
7035 SvIVX(dstr) = SvIVX(sstr);
7036 SvNVX(dstr) = SvNVX(sstr);
7037 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7038 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7040 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7041 else if (SvPVX(sstr) && SvLEN(sstr))
7042 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7044 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7045 BmRARE(dstr) = BmRARE(sstr);
7046 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7047 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7050 SvANY(dstr) = new_XPVLV();
7051 SvCUR(dstr) = SvCUR(sstr);
7052 SvLEN(dstr) = SvLEN(sstr);
7053 SvIVX(dstr) = SvIVX(sstr);
7054 SvNVX(dstr) = SvNVX(sstr);
7055 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7056 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7058 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7059 else if (SvPVX(sstr) && SvLEN(sstr))
7060 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7062 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7063 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7064 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7065 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7066 LvTYPE(dstr) = LvTYPE(sstr);
7069 SvANY(dstr) = new_XPVGV();
7070 SvCUR(dstr) = SvCUR(sstr);
7071 SvLEN(dstr) = SvLEN(sstr);
7072 SvIVX(dstr) = SvIVX(sstr);
7073 SvNVX(dstr) = SvNVX(sstr);
7074 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7075 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7077 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7078 else if (SvPVX(sstr) && SvLEN(sstr))
7079 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7081 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7082 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7083 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7084 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7085 GvFLAGS(dstr) = GvFLAGS(sstr);
7086 GvGP(dstr) = gp_dup(GvGP(sstr));
7087 (void)GpREFCNT_inc(GvGP(dstr));
7090 SvANY(dstr) = new_XPVIO();
7091 SvCUR(dstr) = SvCUR(sstr);
7092 SvLEN(dstr) = SvLEN(sstr);
7093 SvIVX(dstr) = SvIVX(sstr);
7094 SvNVX(dstr) = SvNVX(sstr);
7095 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7096 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7098 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7099 else if (SvPVX(sstr) && SvLEN(sstr))
7100 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7102 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7103 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7104 if (IoOFP(sstr) == IoIFP(sstr))
7105 IoOFP(dstr) = IoIFP(dstr);
7107 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7108 /* PL_rsfp_filters entries have fake IoDIRP() */
7109 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7110 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7112 IoDIRP(dstr) = IoDIRP(sstr);
7113 IoLINES(dstr) = IoLINES(sstr);
7114 IoPAGE(dstr) = IoPAGE(sstr);
7115 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7116 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7117 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7118 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7119 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7120 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7121 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7122 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7123 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7124 IoTYPE(dstr) = IoTYPE(sstr);
7125 IoFLAGS(dstr) = IoFLAGS(sstr);
7128 SvANY(dstr) = new_XPVAV();
7129 SvCUR(dstr) = SvCUR(sstr);
7130 SvLEN(dstr) = SvLEN(sstr);
7131 SvIVX(dstr) = SvIVX(sstr);
7132 SvNVX(dstr) = SvNVX(sstr);
7133 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7134 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7135 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7136 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7137 if (AvARRAY((AV*)sstr)) {
7138 SV **dst_ary, **src_ary;
7139 SSize_t items = AvFILLp((AV*)sstr) + 1;
7141 src_ary = AvARRAY((AV*)sstr);
7142 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7143 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7144 SvPVX(dstr) = (char*)dst_ary;
7145 AvALLOC((AV*)dstr) = dst_ary;
7146 if (AvREAL((AV*)sstr)) {
7148 *dst_ary++ = sv_dup_inc(*src_ary++);
7152 *dst_ary++ = sv_dup(*src_ary++);
7154 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7155 while (items-- > 0) {
7156 *dst_ary++ = &PL_sv_undef;
7160 SvPVX(dstr) = Nullch;
7161 AvALLOC((AV*)dstr) = (SV**)NULL;
7165 SvANY(dstr) = new_XPVHV();
7166 SvCUR(dstr) = SvCUR(sstr);
7167 SvLEN(dstr) = SvLEN(sstr);
7168 SvIVX(dstr) = SvIVX(sstr);
7169 SvNVX(dstr) = SvNVX(sstr);
7170 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7171 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7172 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7173 if (HvARRAY((HV*)sstr)) {
7175 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7176 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7177 Newz(0, dxhv->xhv_array,
7178 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7179 while (i <= sxhv->xhv_max) {
7180 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7181 !!HvSHAREKEYS(sstr));
7184 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7187 SvPVX(dstr) = Nullch;
7188 HvEITER((HV*)dstr) = (HE*)NULL;
7190 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7191 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7194 SvANY(dstr) = new_XPVFM();
7195 FmLINES(dstr) = FmLINES(sstr);
7199 SvANY(dstr) = new_XPVCV();
7201 SvCUR(dstr) = SvCUR(sstr);
7202 SvLEN(dstr) = SvLEN(sstr);
7203 SvIVX(dstr) = SvIVX(sstr);
7204 SvNVX(dstr) = SvNVX(sstr);
7205 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7206 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7207 if (SvPVX(sstr) && SvLEN(sstr))
7208 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7210 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7211 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7212 CvSTART(dstr) = CvSTART(sstr);
7213 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7214 CvXSUB(dstr) = CvXSUB(sstr);
7215 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7216 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7217 CvDEPTH(dstr) = CvDEPTH(sstr);
7218 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7219 /* XXX padlists are real, but pretend to be not */
7220 AvREAL_on(CvPADLIST(sstr));
7221 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7222 AvREAL_off(CvPADLIST(sstr));
7223 AvREAL_off(CvPADLIST(dstr));
7226 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7227 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7228 CvFLAGS(dstr) = CvFLAGS(sstr);
7231 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7235 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7242 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7247 return (PERL_CONTEXT*)NULL;
7249 /* look for it in the table first */
7250 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7254 /* create anew and remember what it is */
7255 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7256 ptr_table_store(PL_ptr_table, cxs, ncxs);
7259 PERL_CONTEXT *cx = &cxs[ix];
7260 PERL_CONTEXT *ncx = &ncxs[ix];
7261 ncx->cx_type = cx->cx_type;
7262 if (CxTYPE(cx) == CXt_SUBST) {
7263 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7266 ncx->blk_oldsp = cx->blk_oldsp;
7267 ncx->blk_oldcop = cx->blk_oldcop;
7268 ncx->blk_oldretsp = cx->blk_oldretsp;
7269 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7270 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7271 ncx->blk_oldpm = cx->blk_oldpm;
7272 ncx->blk_gimme = cx->blk_gimme;
7273 switch (CxTYPE(cx)) {
7275 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7276 ? cv_dup_inc(cx->blk_sub.cv)
7277 : cv_dup(cx->blk_sub.cv));
7278 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7279 ? av_dup_inc(cx->blk_sub.argarray)
7281 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7282 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7283 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7284 ncx->blk_sub.lval = cx->blk_sub.lval;
7287 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7288 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7289 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7290 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7291 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7294 ncx->blk_loop.label = cx->blk_loop.label;
7295 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7296 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7297 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7298 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7299 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7300 ? cx->blk_loop.iterdata
7301 : gv_dup((GV*)cx->blk_loop.iterdata));
7302 ncx->blk_loop.oldcurpad
7303 = (SV**)ptr_table_fetch(PL_ptr_table,
7304 cx->blk_loop.oldcurpad);
7305 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7306 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7307 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7308 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7309 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7312 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7313 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7314 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7315 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7328 Perl_si_dup(pTHX_ PERL_SI *si)
7333 return (PERL_SI*)NULL;
7335 /* look for it in the table first */
7336 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7340 /* create anew and remember what it is */
7341 Newz(56, nsi, 1, PERL_SI);
7342 ptr_table_store(PL_ptr_table, si, nsi);
7344 nsi->si_stack = av_dup_inc(si->si_stack);
7345 nsi->si_cxix = si->si_cxix;
7346 nsi->si_cxmax = si->si_cxmax;
7347 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7348 nsi->si_type = si->si_type;
7349 nsi->si_prev = si_dup(si->si_prev);
7350 nsi->si_next = si_dup(si->si_next);
7351 nsi->si_markoff = si->si_markoff;
7356 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7357 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7358 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7359 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7360 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7361 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7362 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7363 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7364 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7365 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7366 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7367 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7370 #define pv_dup_inc(p) SAVEPV(p)
7371 #define pv_dup(p) SAVEPV(p)
7372 #define svp_dup_inc(p,pp) any_dup(p,pp)
7375 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7382 /* look for it in the table first */
7383 ret = ptr_table_fetch(PL_ptr_table, v);
7387 /* see if it is part of the interpreter structure */
7388 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7389 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7397 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7399 ANY *ss = proto_perl->Tsavestack;
7400 I32 ix = proto_perl->Tsavestack_ix;
7401 I32 max = proto_perl->Tsavestack_max;
7414 void (*dptr) (void*);
7415 void (*dxptr) (pTHXo_ void*);
7418 Newz(54, nss, max, ANY);
7424 case SAVEt_ITEM: /* normal string */
7425 sv = (SV*)POPPTR(ss,ix);
7426 TOPPTR(nss,ix) = sv_dup_inc(sv);
7427 sv = (SV*)POPPTR(ss,ix);
7428 TOPPTR(nss,ix) = sv_dup_inc(sv);
7430 case SAVEt_SV: /* scalar reference */
7431 sv = (SV*)POPPTR(ss,ix);
7432 TOPPTR(nss,ix) = sv_dup_inc(sv);
7433 gv = (GV*)POPPTR(ss,ix);
7434 TOPPTR(nss,ix) = gv_dup_inc(gv);
7436 case SAVEt_GENERIC_PVREF: /* generic char* */
7437 c = (char*)POPPTR(ss,ix);
7438 TOPPTR(nss,ix) = pv_dup(c);
7439 ptr = POPPTR(ss,ix);
7440 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7442 case SAVEt_GENERIC_SVREF: /* generic sv */
7443 case SAVEt_SVREF: /* scalar reference */
7444 sv = (SV*)POPPTR(ss,ix);
7445 TOPPTR(nss,ix) = sv_dup_inc(sv);
7446 ptr = POPPTR(ss,ix);
7447 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7449 case SAVEt_AV: /* array reference */
7450 av = (AV*)POPPTR(ss,ix);
7451 TOPPTR(nss,ix) = av_dup_inc(av);
7452 gv = (GV*)POPPTR(ss,ix);
7453 TOPPTR(nss,ix) = gv_dup(gv);
7455 case SAVEt_HV: /* hash reference */
7456 hv = (HV*)POPPTR(ss,ix);
7457 TOPPTR(nss,ix) = hv_dup_inc(hv);
7458 gv = (GV*)POPPTR(ss,ix);
7459 TOPPTR(nss,ix) = gv_dup(gv);
7461 case SAVEt_INT: /* int reference */
7462 ptr = POPPTR(ss,ix);
7463 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7464 intval = (int)POPINT(ss,ix);
7465 TOPINT(nss,ix) = intval;
7467 case SAVEt_LONG: /* long reference */
7468 ptr = POPPTR(ss,ix);
7469 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7470 longval = (long)POPLONG(ss,ix);
7471 TOPLONG(nss,ix) = longval;
7473 case SAVEt_I32: /* I32 reference */
7474 case SAVEt_I16: /* I16 reference */
7475 case SAVEt_I8: /* I8 reference */
7476 ptr = POPPTR(ss,ix);
7477 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7481 case SAVEt_IV: /* IV reference */
7482 ptr = POPPTR(ss,ix);
7483 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7487 case SAVEt_SPTR: /* SV* reference */
7488 ptr = POPPTR(ss,ix);
7489 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7490 sv = (SV*)POPPTR(ss,ix);
7491 TOPPTR(nss,ix) = sv_dup(sv);
7493 case SAVEt_VPTR: /* random* reference */
7494 ptr = POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7496 ptr = POPPTR(ss,ix);
7497 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7499 case SAVEt_PPTR: /* char* reference */
7500 ptr = POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7502 c = (char*)POPPTR(ss,ix);
7503 TOPPTR(nss,ix) = pv_dup(c);
7505 case SAVEt_HPTR: /* HV* reference */
7506 ptr = POPPTR(ss,ix);
7507 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7508 hv = (HV*)POPPTR(ss,ix);
7509 TOPPTR(nss,ix) = hv_dup(hv);
7511 case SAVEt_APTR: /* AV* reference */
7512 ptr = POPPTR(ss,ix);
7513 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7514 av = (AV*)POPPTR(ss,ix);
7515 TOPPTR(nss,ix) = av_dup(av);
7518 gv = (GV*)POPPTR(ss,ix);
7519 TOPPTR(nss,ix) = gv_dup(gv);
7521 case SAVEt_GP: /* scalar reference */
7522 gp = (GP*)POPPTR(ss,ix);
7523 TOPPTR(nss,ix) = gp = gp_dup(gp);
7524 (void)GpREFCNT_inc(gp);
7525 gv = (GV*)POPPTR(ss,ix);
7526 TOPPTR(nss,ix) = gv_dup_inc(c);
7527 c = (char*)POPPTR(ss,ix);
7528 TOPPTR(nss,ix) = pv_dup(c);
7535 sv = (SV*)POPPTR(ss,ix);
7536 TOPPTR(nss,ix) = sv_dup_inc(sv);
7539 ptr = POPPTR(ss,ix);
7540 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7541 /* these are assumed to be refcounted properly */
7542 switch (((OP*)ptr)->op_type) {
7549 TOPPTR(nss,ix) = ptr;
7554 TOPPTR(nss,ix) = Nullop;
7559 TOPPTR(nss,ix) = Nullop;
7562 c = (char*)POPPTR(ss,ix);
7563 TOPPTR(nss,ix) = pv_dup_inc(c);
7566 longval = POPLONG(ss,ix);
7567 TOPLONG(nss,ix) = longval;
7570 hv = (HV*)POPPTR(ss,ix);
7571 TOPPTR(nss,ix) = hv_dup_inc(hv);
7572 c = (char*)POPPTR(ss,ix);
7573 TOPPTR(nss,ix) = pv_dup_inc(c);
7577 case SAVEt_DESTRUCTOR:
7578 ptr = POPPTR(ss,ix);
7579 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7580 dptr = POPDPTR(ss,ix);
7581 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7583 case SAVEt_DESTRUCTOR_X:
7584 ptr = POPPTR(ss,ix);
7585 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7586 dxptr = POPDXPTR(ss,ix);
7587 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7589 case SAVEt_REGCONTEXT:
7595 case SAVEt_STACK_POS: /* Position on Perl stack */
7599 case SAVEt_AELEM: /* array element */
7600 sv = (SV*)POPPTR(ss,ix);
7601 TOPPTR(nss,ix) = sv_dup_inc(sv);
7604 av = (AV*)POPPTR(ss,ix);
7605 TOPPTR(nss,ix) = av_dup_inc(av);
7607 case SAVEt_HELEM: /* hash element */
7608 sv = (SV*)POPPTR(ss,ix);
7609 TOPPTR(nss,ix) = sv_dup_inc(sv);
7610 sv = (SV*)POPPTR(ss,ix);
7611 TOPPTR(nss,ix) = sv_dup_inc(sv);
7612 hv = (HV*)POPPTR(ss,ix);
7613 TOPPTR(nss,ix) = hv_dup_inc(hv);
7616 ptr = POPPTR(ss,ix);
7617 TOPPTR(nss,ix) = ptr;
7624 av = (AV*)POPPTR(ss,ix);
7625 TOPPTR(nss,ix) = av_dup(av);
7628 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7640 perl_clone(PerlInterpreter *proto_perl, UV flags)
7643 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7646 #ifdef PERL_IMPLICIT_SYS
7647 return perl_clone_using(proto_perl, flags,
7649 proto_perl->IMemShared,
7650 proto_perl->IMemParse,
7660 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7661 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7662 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7663 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7664 struct IPerlDir* ipD, struct IPerlSock* ipS,
7665 struct IPerlProc* ipP)
7667 /* XXX many of the string copies here can be optimized if they're
7668 * constants; they need to be allocated as common memory and just
7669 * their pointers copied. */
7673 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7675 PERL_SET_THX(pPerl);
7676 # else /* !PERL_OBJECT */
7677 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7678 PERL_SET_THX(my_perl);
7681 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7686 # else /* !DEBUGGING */
7687 Zero(my_perl, 1, PerlInterpreter);
7688 # endif /* DEBUGGING */
7692 PL_MemShared = ipMS;
7700 # endif /* PERL_OBJECT */
7701 #else /* !PERL_IMPLICIT_SYS */
7703 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7704 PERL_SET_THX(my_perl);
7707 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7712 # else /* !DEBUGGING */
7713 Zero(my_perl, 1, PerlInterpreter);
7714 # endif /* DEBUGGING */
7715 #endif /* PERL_IMPLICIT_SYS */
7718 PL_xiv_arenaroot = NULL;
7720 PL_xnv_arenaroot = NULL;
7722 PL_xrv_arenaroot = NULL;
7724 PL_xpv_arenaroot = NULL;
7726 PL_xpviv_arenaroot = NULL;
7727 PL_xpviv_root = NULL;
7728 PL_xpvnv_arenaroot = NULL;
7729 PL_xpvnv_root = NULL;
7730 PL_xpvcv_arenaroot = NULL;
7731 PL_xpvcv_root = NULL;
7732 PL_xpvav_arenaroot = NULL;
7733 PL_xpvav_root = NULL;
7734 PL_xpvhv_arenaroot = NULL;
7735 PL_xpvhv_root = NULL;
7736 PL_xpvmg_arenaroot = NULL;
7737 PL_xpvmg_root = NULL;
7738 PL_xpvlv_arenaroot = NULL;
7739 PL_xpvlv_root = NULL;
7740 PL_xpvbm_arenaroot = NULL;
7741 PL_xpvbm_root = NULL;
7742 PL_he_arenaroot = NULL;
7744 PL_nice_chunk = NULL;
7745 PL_nice_chunk_size = 0;
7748 PL_sv_root = Nullsv;
7749 PL_sv_arenaroot = Nullsv;
7751 PL_debug = proto_perl->Idebug;
7753 /* create SV map for pointer relocation */
7754 PL_ptr_table = ptr_table_new();
7756 /* initialize these special pointers as early as possible */
7757 SvANY(&PL_sv_undef) = NULL;
7758 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7759 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7760 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7763 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7765 SvANY(&PL_sv_no) = new_XPVNV();
7767 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7768 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7769 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7770 SvCUR(&PL_sv_no) = 0;
7771 SvLEN(&PL_sv_no) = 1;
7772 SvNVX(&PL_sv_no) = 0;
7773 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7776 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7778 SvANY(&PL_sv_yes) = new_XPVNV();
7780 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7781 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7782 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7783 SvCUR(&PL_sv_yes) = 1;
7784 SvLEN(&PL_sv_yes) = 2;
7785 SvNVX(&PL_sv_yes) = 1;
7786 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7788 /* create shared string table */
7789 PL_strtab = newHV();
7790 HvSHAREKEYS_off(PL_strtab);
7791 hv_ksplit(PL_strtab, 512);
7792 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7794 PL_compiling = proto_perl->Icompiling;
7795 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7796 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7797 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7798 if (!specialWARN(PL_compiling.cop_warnings))
7799 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7800 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7802 /* pseudo environmental stuff */
7803 PL_origargc = proto_perl->Iorigargc;
7805 New(0, PL_origargv, i+1, char*);
7806 PL_origargv[i] = '\0';
7808 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7810 PL_envgv = gv_dup(proto_perl->Ienvgv);
7811 PL_incgv = gv_dup(proto_perl->Iincgv);
7812 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7813 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7814 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7815 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7818 PL_minus_c = proto_perl->Iminus_c;
7819 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7820 PL_localpatches = proto_perl->Ilocalpatches;
7821 PL_splitstr = proto_perl->Isplitstr;
7822 PL_preprocess = proto_perl->Ipreprocess;
7823 PL_minus_n = proto_perl->Iminus_n;
7824 PL_minus_p = proto_perl->Iminus_p;
7825 PL_minus_l = proto_perl->Iminus_l;
7826 PL_minus_a = proto_perl->Iminus_a;
7827 PL_minus_F = proto_perl->Iminus_F;
7828 PL_doswitches = proto_perl->Idoswitches;
7829 PL_dowarn = proto_perl->Idowarn;
7830 PL_doextract = proto_perl->Idoextract;
7831 PL_sawampersand = proto_perl->Isawampersand;
7832 PL_unsafe = proto_perl->Iunsafe;
7833 PL_inplace = SAVEPV(proto_perl->Iinplace);
7834 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7835 PL_perldb = proto_perl->Iperldb;
7836 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7838 /* magical thingies */
7839 /* XXX time(&PL_basetime) when asked for? */
7840 PL_basetime = proto_perl->Ibasetime;
7841 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7843 PL_maxsysfd = proto_perl->Imaxsysfd;
7844 PL_multiline = proto_perl->Imultiline;
7845 PL_statusvalue = proto_perl->Istatusvalue;
7847 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7850 /* shortcuts to various I/O objects */
7851 PL_stdingv = gv_dup(proto_perl->Istdingv);
7852 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7853 PL_defgv = gv_dup(proto_perl->Idefgv);
7854 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7855 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7856 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7858 /* shortcuts to regexp stuff */
7859 PL_replgv = gv_dup(proto_perl->Ireplgv);
7861 /* shortcuts to misc objects */
7862 PL_errgv = gv_dup(proto_perl->Ierrgv);
7864 /* shortcuts to debugging objects */
7865 PL_DBgv = gv_dup(proto_perl->IDBgv);
7866 PL_DBline = gv_dup(proto_perl->IDBline);
7867 PL_DBsub = gv_dup(proto_perl->IDBsub);
7868 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7869 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7870 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7871 PL_lineary = av_dup(proto_perl->Ilineary);
7872 PL_dbargs = av_dup(proto_perl->Idbargs);
7875 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7876 PL_curstash = hv_dup(proto_perl->Tcurstash);
7877 PL_debstash = hv_dup(proto_perl->Idebstash);
7878 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7879 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7881 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7882 PL_endav = av_dup_inc(proto_perl->Iendav);
7883 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7884 PL_initav = av_dup_inc(proto_perl->Iinitav);
7886 PL_sub_generation = proto_perl->Isub_generation;
7888 /* funky return mechanisms */
7889 PL_forkprocess = proto_perl->Iforkprocess;
7891 /* subprocess state */
7892 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7894 /* internal state */
7895 PL_tainting = proto_perl->Itainting;
7896 PL_maxo = proto_perl->Imaxo;
7897 if (proto_perl->Iop_mask)
7898 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7900 PL_op_mask = Nullch;
7902 /* current interpreter roots */
7903 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7904 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7905 PL_main_start = proto_perl->Imain_start;
7906 PL_eval_root = proto_perl->Ieval_root;
7907 PL_eval_start = proto_perl->Ieval_start;
7909 /* runtime control stuff */
7910 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7911 PL_copline = proto_perl->Icopline;
7913 PL_filemode = proto_perl->Ifilemode;
7914 PL_lastfd = proto_perl->Ilastfd;
7915 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7918 PL_gensym = proto_perl->Igensym;
7919 PL_preambled = proto_perl->Ipreambled;
7920 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7921 PL_laststatval = proto_perl->Ilaststatval;
7922 PL_laststype = proto_perl->Ilaststype;
7923 PL_mess_sv = Nullsv;
7925 PL_orslen = proto_perl->Iorslen;
7926 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7927 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7929 /* interpreter atexit processing */
7930 PL_exitlistlen = proto_perl->Iexitlistlen;
7931 if (PL_exitlistlen) {
7932 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7933 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7936 PL_exitlist = (PerlExitListEntry*)NULL;
7937 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7939 PL_profiledata = NULL;
7940 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7941 /* PL_rsfp_filters entries have fake IoDIRP() */
7942 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7944 PL_compcv = cv_dup(proto_perl->Icompcv);
7945 PL_comppad = av_dup(proto_perl->Icomppad);
7946 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7947 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7948 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7949 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7950 proto_perl->Tcurpad);
7952 #ifdef HAVE_INTERP_INTERN
7953 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7956 /* more statics moved here */
7957 PL_generation = proto_perl->Igeneration;
7958 PL_DBcv = cv_dup(proto_perl->IDBcv);
7960 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7961 PL_in_clean_all = proto_perl->Iin_clean_all;
7963 PL_uid = proto_perl->Iuid;
7964 PL_euid = proto_perl->Ieuid;
7965 PL_gid = proto_perl->Igid;
7966 PL_egid = proto_perl->Iegid;
7967 PL_nomemok = proto_perl->Inomemok;
7968 PL_an = proto_perl->Ian;
7969 PL_cop_seqmax = proto_perl->Icop_seqmax;
7970 PL_op_seqmax = proto_perl->Iop_seqmax;
7971 PL_evalseq = proto_perl->Ievalseq;
7972 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7973 PL_origalen = proto_perl->Iorigalen;
7974 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7975 PL_osname = SAVEPV(proto_perl->Iosname);
7976 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7977 PL_sighandlerp = proto_perl->Isighandlerp;
7980 PL_runops = proto_perl->Irunops;
7982 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7985 PL_cshlen = proto_perl->Icshlen;
7986 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7989 PL_lex_state = proto_perl->Ilex_state;
7990 PL_lex_defer = proto_perl->Ilex_defer;
7991 PL_lex_expect = proto_perl->Ilex_expect;
7992 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7993 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7994 PL_lex_starts = proto_perl->Ilex_starts;
7995 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7996 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7997 PL_lex_op = proto_perl->Ilex_op;
7998 PL_lex_inpat = proto_perl->Ilex_inpat;
7999 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8000 PL_lex_brackets = proto_perl->Ilex_brackets;
8001 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8002 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8003 PL_lex_casemods = proto_perl->Ilex_casemods;
8004 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8005 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8007 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8008 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8009 PL_nexttoke = proto_perl->Inexttoke;
8011 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8012 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8013 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8014 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8015 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8016 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8017 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8018 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8019 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8020 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8021 PL_pending_ident = proto_perl->Ipending_ident;
8022 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8024 PL_expect = proto_perl->Iexpect;
8026 PL_multi_start = proto_perl->Imulti_start;
8027 PL_multi_end = proto_perl->Imulti_end;
8028 PL_multi_open = proto_perl->Imulti_open;
8029 PL_multi_close = proto_perl->Imulti_close;
8031 PL_error_count = proto_perl->Ierror_count;
8032 PL_subline = proto_perl->Isubline;
8033 PL_subname = sv_dup_inc(proto_perl->Isubname);
8035 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8036 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8037 PL_padix = proto_perl->Ipadix;
8038 PL_padix_floor = proto_perl->Ipadix_floor;
8039 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8041 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8042 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8043 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8044 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8045 PL_last_lop_op = proto_perl->Ilast_lop_op;
8046 PL_in_my = proto_perl->Iin_my;
8047 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8049 PL_cryptseen = proto_perl->Icryptseen;
8052 PL_hints = proto_perl->Ihints;
8054 PL_amagic_generation = proto_perl->Iamagic_generation;
8056 #ifdef USE_LOCALE_COLLATE
8057 PL_collation_ix = proto_perl->Icollation_ix;
8058 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8059 PL_collation_standard = proto_perl->Icollation_standard;
8060 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8061 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8062 #endif /* USE_LOCALE_COLLATE */
8064 #ifdef USE_LOCALE_NUMERIC
8065 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8066 PL_numeric_standard = proto_perl->Inumeric_standard;
8067 PL_numeric_local = proto_perl->Inumeric_local;
8068 PL_numeric_radix = proto_perl->Inumeric_radix;
8069 #endif /* !USE_LOCALE_NUMERIC */
8071 /* utf8 character classes */
8072 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8073 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8074 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8075 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8076 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8077 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8078 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8079 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8080 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8081 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8082 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8083 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8084 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8085 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8086 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8087 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8088 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8091 PL_last_swash_hv = Nullhv; /* reinits on demand */
8092 PL_last_swash_klen = 0;
8093 PL_last_swash_key[0]= '\0';
8094 PL_last_swash_tmps = (U8*)NULL;
8095 PL_last_swash_slen = 0;
8097 /* perly.c globals */
8098 PL_yydebug = proto_perl->Iyydebug;
8099 PL_yynerrs = proto_perl->Iyynerrs;
8100 PL_yyerrflag = proto_perl->Iyyerrflag;
8101 PL_yychar = proto_perl->Iyychar;
8102 PL_yyval = proto_perl->Iyyval;
8103 PL_yylval = proto_perl->Iyylval;
8105 PL_glob_index = proto_perl->Iglob_index;
8106 PL_srand_called = proto_perl->Isrand_called;
8107 PL_uudmap['M'] = 0; /* reinits on demand */
8108 PL_bitcount = Nullch; /* reinits on demand */
8110 if (proto_perl->Ipsig_ptr) {
8111 int sig_num[] = { SIG_NUM };
8112 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8113 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8114 for (i = 1; PL_sig_name[i]; i++) {
8115 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8116 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8120 PL_psig_ptr = (SV**)NULL;
8121 PL_psig_name = (SV**)NULL;
8124 /* thrdvar.h stuff */
8127 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8128 PL_tmps_ix = proto_perl->Ttmps_ix;
8129 PL_tmps_max = proto_perl->Ttmps_max;
8130 PL_tmps_floor = proto_perl->Ttmps_floor;
8131 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8133 while (i <= PL_tmps_ix) {
8134 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8138 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8139 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8140 Newz(54, PL_markstack, i, I32);
8141 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8142 - proto_perl->Tmarkstack);
8143 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8144 - proto_perl->Tmarkstack);
8145 Copy(proto_perl->Tmarkstack, PL_markstack,
8146 PL_markstack_ptr - PL_markstack + 1, I32);
8148 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8149 * NOTE: unlike the others! */
8150 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8151 PL_scopestack_max = proto_perl->Tscopestack_max;
8152 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8153 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8155 /* next push_return() sets PL_retstack[PL_retstack_ix]
8156 * NOTE: unlike the others! */
8157 PL_retstack_ix = proto_perl->Tretstack_ix;
8158 PL_retstack_max = proto_perl->Tretstack_max;
8159 Newz(54, PL_retstack, PL_retstack_max, OP*);
8160 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8162 /* NOTE: si_dup() looks at PL_markstack */
8163 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8165 /* PL_curstack = PL_curstackinfo->si_stack; */
8166 PL_curstack = av_dup(proto_perl->Tcurstack);
8167 PL_mainstack = av_dup(proto_perl->Tmainstack);
8169 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8170 PL_stack_base = AvARRAY(PL_curstack);
8171 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8172 - proto_perl->Tstack_base);
8173 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8175 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8176 * NOTE: unlike the others! */
8177 PL_savestack_ix = proto_perl->Tsavestack_ix;
8178 PL_savestack_max = proto_perl->Tsavestack_max;
8179 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8180 PL_savestack = ss_dup(proto_perl);
8184 ENTER; /* perl_destruct() wants to LEAVE; */
8187 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8188 PL_top_env = &PL_start_env;
8190 PL_op = proto_perl->Top;
8193 PL_Xpv = (XPV*)NULL;
8194 PL_na = proto_perl->Tna;
8196 PL_statbuf = proto_perl->Tstatbuf;
8197 PL_statcache = proto_perl->Tstatcache;
8198 PL_statgv = gv_dup(proto_perl->Tstatgv);
8199 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8201 PL_timesbuf = proto_perl->Ttimesbuf;
8204 PL_tainted = proto_perl->Ttainted;
8205 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8206 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8207 PL_rs = sv_dup_inc(proto_perl->Trs);
8208 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8209 PL_ofslen = proto_perl->Tofslen;
8210 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8211 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8212 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8213 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8214 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8215 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8217 PL_restartop = proto_perl->Trestartop;
8218 PL_in_eval = proto_perl->Tin_eval;
8219 PL_delaymagic = proto_perl->Tdelaymagic;
8220 PL_dirty = proto_perl->Tdirty;
8221 PL_localizing = proto_perl->Tlocalizing;
8223 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8224 PL_protect = proto_perl->Tprotect;
8226 PL_errors = sv_dup_inc(proto_perl->Terrors);
8227 PL_av_fetch_sv = Nullsv;
8228 PL_hv_fetch_sv = Nullsv;
8229 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8230 PL_modcount = proto_perl->Tmodcount;
8231 PL_lastgotoprobe = Nullop;
8232 PL_dumpindent = proto_perl->Tdumpindent;
8234 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8235 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8236 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8237 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8238 PL_sortcxix = proto_perl->Tsortcxix;
8239 PL_efloatbuf = Nullch; /* reinits on demand */
8240 PL_efloatsize = 0; /* reinits on demand */
8244 PL_screamfirst = NULL;
8245 PL_screamnext = NULL;
8246 PL_maxscream = -1; /* reinits on demand */
8247 PL_lastscream = Nullsv;
8249 PL_watchaddr = NULL;
8250 PL_watchok = Nullch;
8252 PL_regdummy = proto_perl->Tregdummy;
8253 PL_regcomp_parse = Nullch;
8254 PL_regxend = Nullch;
8255 PL_regcode = (regnode*)NULL;
8258 PL_regprecomp = Nullch;
8263 PL_seen_zerolen = 0;
8265 PL_regcomp_rx = (regexp*)NULL;
8267 PL_colorset = 0; /* reinits PL_colors[] */
8268 /*PL_colors[6] = {0,0,0,0,0,0};*/
8269 PL_reg_whilem_seen = 0;
8270 PL_reginput = Nullch;
8273 PL_regstartp = (I32*)NULL;
8274 PL_regendp = (I32*)NULL;
8275 PL_reglastparen = (U32*)NULL;
8276 PL_regtill = Nullch;
8278 PL_reg_start_tmp = (char**)NULL;
8279 PL_reg_start_tmpl = 0;
8280 PL_regdata = (struct reg_data*)NULL;
8283 PL_reg_eval_set = 0;
8285 PL_regprogram = (regnode*)NULL;
8287 PL_regcc = (CURCUR*)NULL;
8288 PL_reg_call_cc = (struct re_cc_state*)NULL;
8289 PL_reg_re = (regexp*)NULL;
8290 PL_reg_ganch = Nullch;
8292 PL_reg_magic = (MAGIC*)NULL;
8294 PL_reg_oldcurpm = (PMOP*)NULL;
8295 PL_reg_curpm = (PMOP*)NULL;
8296 PL_reg_oldsaved = Nullch;
8297 PL_reg_oldsavedlen = 0;
8299 PL_reg_leftiter = 0;
8300 PL_reg_poscache = Nullch;
8301 PL_reg_poscache_size= 0;
8303 /* RE engine - function pointers */
8304 PL_regcompp = proto_perl->Tregcompp;
8305 PL_regexecp = proto_perl->Tregexecp;
8306 PL_regint_start = proto_perl->Tregint_start;
8307 PL_regint_string = proto_perl->Tregint_string;
8308 PL_regfree = proto_perl->Tregfree;
8310 PL_reginterp_cnt = 0;
8311 PL_reg_starttry = 0;
8314 return (PerlInterpreter*)pPerl;
8320 #else /* !USE_ITHREADS */
8326 #endif /* USE_ITHREADS */
8329 do_report_used(pTHXo_ SV *sv)
8331 if (SvTYPE(sv) != SVTYPEMASK) {
8332 PerlIO_printf(Perl_debug_log, "****\n");
8338 do_clean_objs(pTHXo_ SV *sv)
8342 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8343 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8349 /* XXX Might want to check arrays, etc. */
8352 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8354 do_clean_named_objs(pTHXo_ SV *sv)
8356 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8357 if ( SvOBJECT(GvSV(sv)) ||
8358 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8359 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8360 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8361 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8363 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8371 do_clean_all(pTHXo_ SV *sv)
8373 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8374 SvFLAGS(sv) |= SVf_BREAK;