/* av.c
*
- * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*/
/*
- * "...for the Entwives desired order, and plenty, and peace (by which they
- * meant that things should remain where they had set them)." --Treebeard
+ * '...for the Entwives desired order, and plenty, and peace (by which they
+ * meant that things should remain where they had set them).' --Treebeard
+ *
+ * [p.476 of _The Lord of the Rings_, III/iv: "Treebeard"]
*/
/*
dVAR;
I32 key;
- assert(av);
+ PERL_ARGS_ASSERT_AV_REIFY;
+ assert(SvTYPE(av) == SVt_PVAV);
if (AvREAL(av))
return;
#ifdef DEBUGGING
- if (SvTIED_mg((SV*)av, PERL_MAGIC_tied) && ckWARN_d(WARN_DEBUGGING))
- Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), "av_reify called on tied array");
+ if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
+ Perl_ck_warner_d(aTHX_ packWARN(WARN_DEBUGGING), "av_reify called on tied array");
#endif
key = AvMAX(av) + 1;
while (key > AvFILLp(av) + 1)
dVAR;
MAGIC *mg;
- assert(av);
+ PERL_ARGS_ASSERT_AV_EXTEND;
+ assert(SvTYPE(av) == SVt_PVAV);
- mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied);
+ mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied);
if (mg) {
dSP;
ENTER;
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
EXTEND(SP,2);
- PUSHs(SvTIED_obj((SV*)av, mg));
- PUSHs(sv_2mortal(newSViv(key+1)));
+ PUSHs(SvTIED_obj(MUTABLE_SV(av), mg));
+ mPUSHi(key + 1);
PUTBACK;
call_method("EXTEND", G_SCALAR|G_DISCARD);
POPSTACK;
IV itmp;
#endif
-#ifdef MYMALLOC
- newmax = malloced_size((void*)AvALLOC(av))/sizeof(SV*) - 1;
+#ifdef Perl_safesysmalloc_size
+ /* Whilst it would be quite possible to move this logic around
+ (as I did in the SV code), so as to set AvMAX(av) early,
+ based on calling Perl_safesysmalloc_size() immediately after
+ allocation, I'm not convinced that it is a great idea here.
+ In an array we have to loop round setting everything to
+ &PL_sv_undef, which means writing to memory, potentially lots
+ of it, whereas for the SV buffer case we don't touch the
+ "bonus" memory. So there there is no cost in telling the
+ world about it, whereas here we have to do work before we can
+ tell the world about it, and that work involves writing to
+ memory that might never be read. So, I feel, better to keep
+ the current lazy system of only writing to it if our caller
+ has a need for more space. NWC */
+ newmax = Perl_safesysmalloc_size((void*)AvALLOC(av)) /
+ sizeof(const SV *) - 1;
if (key <= newmax)
goto resized;
#if defined(STRANGE_MALLOC) || defined(MYMALLOC)
Renew(AvALLOC(av),newmax+1, SV*);
#else
- bytes = (newmax + 1) * sizeof(SV*);
+ bytes = (newmax + 1) * sizeof(const SV *);
#define MALLOC_OVERHEAD 16
itmp = MALLOC_OVERHEAD;
while ((MEM_SIZE)(itmp - MALLOC_OVERHEAD) < bytes)
itmp += itmp;
itmp -= MALLOC_OVERHEAD;
- itmp /= sizeof(SV*);
+ itmp /= sizeof(const SV *);
assert(itmp > newmax);
newmax = itmp - 1;
assert(newmax >= AvMAX(av));
Newx(ary, newmax+1, SV*);
Copy(AvALLOC(av), ary, AvMAX(av)+1, SV*);
if (AvMAX(av) > 64)
- offer_nice_chunk(AvALLOC(av), (AvMAX(av)+1) * sizeof(SV*));
+ offer_nice_chunk(AvALLOC(av),
+ (AvMAX(av)+1) * sizeof(const SV *));
else
Safefree(AvALLOC(av));
AvALLOC(av) = ary;
#endif
-#ifdef MYMALLOC
+#ifdef Perl_safesysmalloc_size
resized:
#endif
ary = AvALLOC(av) + AvMAX(av) + 1;
{
dVAR;
- assert(av);
+ PERL_ARGS_ASSERT_AV_FETCH;
+ assert(SvTYPE(av) == SVt_PVAV);
if (SvRMAGICAL(av)) {
- const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied);
- if (tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata)) {
+ const MAGIC * const tied_magic
+ = mg_find((const SV *)av, PERL_MAGIC_tied);
+ if (tied_magic || mg_find((const SV *)av, PERL_MAGIC_regdata)) {
SV *sv;
if (key < 0) {
I32 adjust_index = 1;
if (tied_magic) {
/* Handle negative array indices 20020222 MJD */
SV * const * const negative_indices_glob =
- hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av, tied_magic))),
+ hv_fetch(SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(av),
+ tied_magic))),
NEGATIVE_INDICES_VAR, 16, 0);
if (negative_indices_glob && SvTRUE(GvSV(*negative_indices_glob)))
sv = sv_newmortal();
sv_upgrade(sv, SVt_PVLV);
- mg_copy((SV*)av, sv, 0, key);
+ mg_copy(MUTABLE_SV(av), sv, 0, key);
LvTYPE(sv) = 't';
LvTARG(sv) = sv; /* fake (SV**) */
return &(LvTARG(sv));
dVAR;
SV** ary;
- assert(av);
+ PERL_ARGS_ASSERT_AV_STORE;
+ assert(SvTYPE(av) == SVt_PVAV);
/* S_regclass relies on being able to pass in a NULL sv
(unicode_alternate may be NULL).
val = &PL_sv_undef;
if (SvRMAGICAL(av)) {
- const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied);
+ const MAGIC * const tied_magic = mg_find((const SV *)av, PERL_MAGIC_tied);
if (tied_magic) {
/* Handle negative array indices 20020222 MJD */
if (key < 0) {
bool adjust_index = 1;
SV * const * const negative_indices_glob =
- hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av,
+ hv_fetch(SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(av),
tied_magic))),
NEGATIVE_INDICES_VAR, 16, 0);
if (negative_indices_glob
}
}
if (val != &PL_sv_undef) {
- mg_copy((SV*)av, val, 0, key);
+ mg_copy(MUTABLE_SV(av), val, 0, key);
}
return NULL;
}
}
if (SvREADONLY(av) && key >= AvFILL(av))
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
if (!AvREAL(av) && AvREIFY(av))
av_reify(av);
if (SvSMAGICAL(av)) {
const MAGIC* const mg = SvMAGIC(av);
if (val != &PL_sv_undef) {
- sv_magic(val, (SV*)av, toLOWER(mg->mg_type), 0, key);
+ sv_magic(val, MUTABLE_SV(av), toLOWER(mg->mg_type), 0, key);
}
if (PL_delaymagic && mg->mg_type == PERL_MAGIC_isa)
PL_delaymagic |= DM_ARRAY;
else
- mg_set((SV*)av);
+ mg_set(MUTABLE_SV(av));
}
return &ary[key];
}
/*
-=for apidoc newAV
-
-Creates a new AV. The reference count is set to 1.
-
-=cut
-*/
-
-AV *
-Perl_newAV(pTHX)
-{
- register AV * const av = (AV*)newSV_type(SVt_PVAV);
- /* sv_upgrade does AvREAL_only() */
- AvALLOC(av) = 0;
- AvARRAY(av) = NULL;
- AvMAX(av) = AvFILLp(av) = -1;
- return av;
-}
-
-/*
=for apidoc av_make
Creates a new AV and populates it with a list of SVs. The SVs are copied
AV *
Perl_av_make(pTHX_ register I32 size, register SV **strp)
{
- register AV * const av = (AV*)newSV_type(SVt_PVAV);
+ register AV * const av = MUTABLE_AV(newSV_type(SVt_PVAV));
/* sv_upgrade does AvREAL_only() */
+ PERL_ARGS_ASSERT_AV_MAKE;
+ assert(SvTYPE(av) == SVt_PVAV);
+
if (size) { /* "defined" was returning undef for size==0 anyway. */
register SV** ary;
register I32 i;
AvFILLp(av) = AvMAX(av) = size - 1;
for (i = 0; i < size; i++) {
assert (*strp);
+
+ /* Don't let sv_setsv swipe, since our source array might
+ have multiple references to the same temp scalar (e.g.
+ from a list slice) */
+
ary[i] = newSV(0);
- sv_setsv(ary[i], *strp);
+ sv_setsv_flags(ary[i], *strp,
+ SV_GMAGIC|SV_DO_COW_SVSETSV|SV_NOSTEAL);
strp++;
}
}
dVAR;
I32 extra;
- assert(av);
+ PERL_ARGS_ASSERT_AV_CLEAR;
+ assert(SvTYPE(av) == SVt_PVAV);
+
#ifdef DEBUGGING
- if (SvREFCNT(av) == 0 && ckWARN_d(WARN_DEBUGGING)) {
- Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), "Attempt to clear deleted array");
+ if (SvREFCNT(av) == 0) {
+ Perl_ck_warner_d(aTHX_ packWARN(WARN_DEBUGGING), "Attempt to clear deleted array");
}
#endif
if (SvREADONLY(av))
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
/* Give any tie a chance to cleanup first */
if (SvRMAGICAL(av)) {
const MAGIC* const mg = SvMAGIC(av);
- if (PL_delaymagic && mg->mg_type == PERL_MAGIC_isa)
+ if (PL_delaymagic && mg && mg->mg_type == PERL_MAGIC_isa)
PL_delaymagic |= DM_ARRAY;
else
- mg_clear((SV*)av);
+ mg_clear(MUTABLE_SV(av));
}
if (AvMAX(av) < 0)
void
Perl_av_undef(pTHX_ register AV *av)
{
- assert(av);
+ PERL_ARGS_ASSERT_AV_UNDEF;
+ assert(SvTYPE(av) == SVt_PVAV);
/* Give any tie a chance to cleanup first */
- if (SvTIED_mg((SV*)av, PERL_MAGIC_tied))
+ if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
av_fill(av, -1);
if (AvREAL(av)) {
AvARRAY(av) = NULL;
AvMAX(av) = AvFILLp(av) = -1;
- if(SvRMAGICAL(av)) mg_clear((SV*)av);
+ if(SvRMAGICAL(av)) mg_clear(MUTABLE_SV(av));
}
/*
void
Perl_av_create_and_push(pTHX_ AV **const avp, SV *const val)
{
+ PERL_ARGS_ASSERT_AV_CREATE_AND_PUSH;
+
if (!*avp)
*avp = newAV();
av_push(*avp, val);
=for apidoc av_push
Pushes an SV onto the end of the array. The array will grow automatically
-to accommodate the addition.
+to accommodate the addition. Like C<av_store>, this takes ownership of one
+reference count.
=cut
*/
{
dVAR;
MAGIC *mg;
- assert(av);
+
+ PERL_ARGS_ASSERT_AV_PUSH;
+ assert(SvTYPE(av) == SVt_PVAV);
if (SvREADONLY(av))
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
- if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) {
+ if ((mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) {
dSP;
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
EXTEND(SP,2);
- PUSHs(SvTIED_obj((SV*)av, mg));
+ PUSHs(SvTIED_obj(MUTABLE_SV(av), mg));
PUSHs(val);
PUTBACK;
ENTER;
SV *retval;
MAGIC* mg;
- assert(av);
+ PERL_ARGS_ASSERT_AV_POP;
+ assert(SvTYPE(av) == SVt_PVAV);
if (SvREADONLY(av))
- Perl_croak(aTHX_ PL_no_modify);
- if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) {
+ Perl_croak(aTHX_ "%s", PL_no_modify);
+ if ((mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) {
dSP;
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
- XPUSHs(SvTIED_obj((SV*)av, mg));
+ XPUSHs(SvTIED_obj(MUTABLE_SV(av), mg));
PUTBACK;
ENTER;
if (call_method("POP", G_SCALAR)) {
retval = AvARRAY(av)[AvFILLp(av)];
AvARRAY(av)[AvFILLp(av)--] = &PL_sv_undef;
if (SvSMAGICAL(av))
- mg_set((SV*)av);
+ mg_set(MUTABLE_SV(av));
return retval;
}
SV **
Perl_av_create_and_unshift_one(pTHX_ AV **const avp, SV *const val)
{
+ PERL_ARGS_ASSERT_AV_CREATE_AND_UNSHIFT_ONE;
+
if (!*avp)
*avp = newAV();
av_unshift(*avp, 1);
register I32 i;
MAGIC* mg;
- assert(av);
+ PERL_ARGS_ASSERT_AV_UNSHIFT;
+ assert(SvTYPE(av) == SVt_PVAV);
if (SvREADONLY(av))
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
- if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) {
+ if ((mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) {
dSP;
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
EXTEND(SP,1+num);
- PUSHs(SvTIED_obj((SV*)av, mg));
+ PUSHs(SvTIED_obj(MUTABLE_SV(av), mg));
while (num-- > 0) {
PUSHs(&PL_sv_undef);
}
/*
=for apidoc av_shift
-Shifts an SV off the beginning of the array.
+Shifts an SV off the beginning of the array. Returns C<&PL_sv_undef> if the
+array is empty.
=cut
*/
SV *retval;
MAGIC* mg;
- assert(av);
+ PERL_ARGS_ASSERT_AV_SHIFT;
+ assert(SvTYPE(av) == SVt_PVAV);
if (SvREADONLY(av))
- Perl_croak(aTHX_ PL_no_modify);
- if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) {
+ Perl_croak(aTHX_ "%s", PL_no_modify);
+ if ((mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) {
dSP;
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
- XPUSHs(SvTIED_obj((SV*)av, mg));
+ XPUSHs(SvTIED_obj(MUTABLE_SV(av), mg));
PUTBACK;
ENTER;
if (call_method("SHIFT", G_SCALAR)) {
AvMAX(av)--;
AvFILLp(av)--;
if (SvSMAGICAL(av))
- mg_set((SV*)av);
+ mg_set(MUTABLE_SV(av));
return retval;
}
*/
I32
-Perl_av_len(pTHX_ register const AV *av)
+Perl_av_len(pTHX_ AV *av)
{
- assert(av);
+ PERL_ARGS_ASSERT_AV_LEN;
+ assert(SvTYPE(av) == SVt_PVAV);
+
return AvFILL(av);
}
dVAR;
MAGIC *mg;
- assert(av);
+ PERL_ARGS_ASSERT_AV_FILL;
+ assert(SvTYPE(av) == SVt_PVAV);
if (fill < 0)
fill = -1;
- if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) {
+ if ((mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) {
dSP;
ENTER;
SAVETMPS;
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
EXTEND(SP,2);
- PUSHs(SvTIED_obj((SV*)av, mg));
- PUSHs(sv_2mortal(newSViv(fill+1)));
+ PUSHs(SvTIED_obj(MUTABLE_SV(av), mg));
+ mPUSHi(fill + 1);
PUTBACK;
call_method("STORESIZE", G_SCALAR|G_DISCARD);
POPSTACK;
AvFILLp(av) = fill;
if (SvSMAGICAL(av))
- mg_set((SV*)av);
+ mg_set(MUTABLE_SV(av));
}
else
(void)av_store(av,fill,&PL_sv_undef);
dVAR;
SV *sv;
- assert(av);
+ PERL_ARGS_ASSERT_AV_DELETE;
+ assert(SvTYPE(av) == SVt_PVAV);
if (SvREADONLY(av))
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
if (SvRMAGICAL(av)) {
- const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied);
- if ((tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata))) {
+ const MAGIC * const tied_magic
+ = mg_find((const SV *)av, PERL_MAGIC_tied);
+ if ((tied_magic || mg_find((const SV *)av, PERL_MAGIC_regdata))) {
/* Handle negative array indices 20020222 MJD */
SV **svp;
if (key < 0) {
unsigned adjust_index = 1;
if (tied_magic) {
SV * const * const negative_indices_glob =
- hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av,
+ hv_fetch(SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(av),
tied_magic))),
NEGATIVE_INDICES_VAR, 16, 0);
if (negative_indices_glob
else
AvARRAY(av)[key] = &PL_sv_undef;
if (SvSMAGICAL(av))
- mg_set((SV*)av);
+ mg_set(MUTABLE_SV(av));
}
if (flags & G_DISCARD) {
SvREFCNT_dec(sv);
Perl_av_exists(pTHX_ AV *av, I32 key)
{
dVAR;
- assert(av);
+ PERL_ARGS_ASSERT_AV_EXISTS;
+ assert(SvTYPE(av) == SVt_PVAV);
if (SvRMAGICAL(av)) {
- const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied);
- if (tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata)) {
+ const MAGIC * const tied_magic
+ = mg_find((const SV *)av, PERL_MAGIC_tied);
+ if (tied_magic || mg_find((const SV *)av, PERL_MAGIC_regdata)) {
SV * const sv = sv_newmortal();
MAGIC *mg;
/* Handle negative array indices 20020222 MJD */
unsigned adjust_index = 1;
if (tied_magic) {
SV * const * const negative_indices_glob =
- hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av,
+ hv_fetch(SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(av),
tied_magic))),
NEGATIVE_INDICES_VAR, 16, 0);
if (negative_indices_glob
}
}
- mg_copy((SV*)av, sv, 0, key);
+ mg_copy(MUTABLE_SV(av), sv, 0, key);
mg = mg_find(sv, PERL_MAGIC_tiedelem);
if (mg) {
magic_existspack(sv, mg);
- return (bool)SvTRUE(sv);
+ return cBOOL(SvTRUE(sv));
}
}
return FALSE;
}
-SV **
-Perl_av_arylen_p(pTHX_ AV *av) {
+static MAGIC *
+S_get_aux_mg(pTHX_ AV *av) {
dVAR;
MAGIC *mg;
- assert(av);
+ PERL_ARGS_ASSERT_GET_AUX_MG;
+ assert(SvTYPE(av) == SVt_PVAV);
- mg = mg_find((SV*)av, PERL_MAGIC_arylen_p);
+ mg = mg_find((const SV *)av, PERL_MAGIC_arylen_p);
if (!mg) {
- mg = sv_magicext((SV*)av, 0, PERL_MAGIC_arylen_p, &PL_vtbl_arylen_p,
- 0, 0);
+ mg = sv_magicext(MUTABLE_SV(av), 0, PERL_MAGIC_arylen_p,
+ &PL_vtbl_arylen_p, 0, 0);
assert(mg);
/* sv_magicext won't set this for us because we pass in a NULL obj */
mg->mg_flags |= MGf_REFCOUNTED;
}
+ return mg;
+}
+
+SV **
+Perl_av_arylen_p(pTHX_ AV *av) {
+ MAGIC *const mg = get_aux_mg(av);
+
+ PERL_ARGS_ASSERT_AV_ARYLEN_P;
+ assert(SvTYPE(av) == SVt_PVAV);
+
return &(mg->mg_obj);
}
+IV *
+Perl_av_iter_p(pTHX_ AV *av) {
+ MAGIC *const mg = get_aux_mg(av);
+
+ PERL_ARGS_ASSERT_AV_ITER_P;
+ assert(SvTYPE(av) == SVt_PVAV);
+
+#if IVSIZE == I32SIZE
+ return (IV *)&(mg->mg_len);
+#else
+ if (!mg->mg_ptr) {
+ IV *temp;
+ mg->mg_len = IVSIZE;
+ Newxz(temp, 1, IV);
+ mg->mg_ptr = (char *) temp;
+ }
+ return (IV *)mg->mg_ptr;
+#endif
+}
+
/*
* Local variables:
* c-indentation-style: bsd
https://perl5.git.perl.org / perl5.git / blobdiff