#include "EXTERN.h"
#define PERL_IN_SCOPE_C
#include "perl.h"
+#include "feature.h"
SV**
Perl_stack_grow(pTHX_ SV **sp, SV **p, SSize_t n)
128;
#endif
/* If the total might wrap, panic instead. This is really testing
- * that (current + n + extra < SSize_t_MAX), but done in a way that
+ * that (current + n + extra < Stack_off_t_MAX), but done in a way that
* can't wrap */
- if (UNLIKELY( current > SSize_t_MAX - extra
- || current + extra > SSize_t_MAX - n
+ if (UNLIKELY( current > Stack_off_t_MAX - extra
+ || current + extra > Stack_off_t_MAX - n
))
/* diag_listed_as: Out of memory during %s extend */
Perl_croak(aTHX_ "Out of memory during stack extend");
av_extend(PL_curstack, current + n + extra);
+#ifdef DEBUGGING
+ PL_curstackinfo->si_stack_hwm = current + n + extra;
+#endif
+
return PL_stack_sp;
}
-#ifndef STRESS_REALLOC
-#define GROW(old) ((old) * 3 / 2)
-#else
+#ifdef STRESS_REALLOC
#define GROW(old) ((old) + 1)
+#else
+#define GROW(old) ((old) * 3 / 2)
#endif
+/* for backcomp */
PERL_SI *
Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
{
+ return new_stackinfo_flags(stitems, cxitems, 0);
+}
+
+/* current flag meanings:
+ * 1 make the new arg stack AvREAL
+ */
+
+PERL_SI *
+Perl_new_stackinfo_flags(pTHX_ I32 stitems, I32 cxitems, UV flags)
+{
PERL_SI *si;
Newx(si, 1, PERL_SI);
si->si_stack = newAV();
- AvREAL_off(si->si_stack);
+ if (!(flags & 1))
+ AvREAL_off(si->si_stack);
av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
AvALLOC(si->si_stack)[0] = &PL_sv_undef;
AvFILLp(si->si_stack) = 0;
+#ifdef PERL_RC_STACK
+ si->si_stack_nonrc_base = 0;
+#endif
si->si_prev = 0;
si->si_next = 0;
si->si_cxmax = cxitems - 1;
si->si_cxix = -1;
+ si->si_cxsubix = -1;
si->si_type = PERLSI_UNDEF;
Newx(si->si_cxstack, cxitems, PERL_CONTEXT);
/* Without any kind of initialising CX_PUSHSUBST()
return cxstack_ix + 1;
}
+/*
+=for apidoc_section $callback
+=for apidoc push_scope
+
+Implements L<perlapi/C<ENTER>>
+
+=cut
+*/
+
void
Perl_push_scope(pTHX)
{
if (UNLIKELY(PL_scopestack_ix == PL_scopestack_max)) {
const IV new_max = GROW(PL_scopestack_max);
- Renew(PL_scopestack, new_max, I32);
+ Renew(PL_scopestack, new_max, I32);
#ifdef DEBUGGING
- Renew(PL_scopestack_name, new_max, const char*);
+ Renew(PL_scopestack_name, new_max, const char*);
#endif
- PL_scopestack_max = new_max;
+ PL_scopestack_max = new_max;
}
#ifdef DEBUGGING
PL_scopestack_name[PL_scopestack_ix] = "unknown";
}
+/*
+=for apidoc_section $callback
+=for apidoc pop_scope
+
+Implements L<perlapi/C<LEAVE>>
+
+=cut
+*/
+
void
Perl_pop_scope(pTHX)
{
LEAVE_SCOPE(oldsave);
}
-I32 *
+Stack_off_t *
Perl_markstack_grow(pTHX)
{
const I32 oldmax = PL_markstack_max - PL_markstack;
const I32 newmax = GROW(oldmax);
- Renew(PL_markstack, newmax, I32);
+ Renew(PL_markstack, newmax, Stack_off_t);
PL_markstack_max = PL_markstack + newmax;
PL_markstack_ptr = PL_markstack + oldmax;
DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log,
void
Perl_savestack_grow(pTHX)
{
- IV new_max;
-#ifdef STRESS_REALLOC
- new_max = PL_savestack_max + SS_MAXPUSH;
-#else
- new_max = GROW(PL_savestack_max);
-#endif
- /* Note that we allocate SS_MAXPUSH slots higher than ss_max
- * so that SS_ADD_END(), SSGROW() etc can do a simper check */
- Renew(PL_savestack, new_max + SS_MAXPUSH, ANY);
- PL_savestack_max = new_max;
+ const I32 by = PL_savestack_max - PL_savestack_ix;
+ Perl_savestack_grow_cnt(aTHX_ by);
}
void
Perl_savestack_grow_cnt(pTHX_ I32 need)
{
- const IV new_max = PL_savestack_ix + need;
- /* Note that we allocate SS_MAXPUSH slots higher than ss_max
- * so that SS_ADD_END(), SSGROW() etc can do a simper check */
- Renew(PL_savestack, new_max + SS_MAXPUSH, ANY);
+ /* NOTE: PL_savestack_max and PL_savestack_ix are I32.
+ *
+ * This makes sense when you consider that having I32_MAX items on
+ * the stack would be quite large.
+ *
+ * However, we use IV here so that we can detect if the new requested
+ * amount is larger than I32_MAX.
+ */
+ const IV new_floor = PL_savestack_max + need; /* what we need */
+ /* the GROW() macro normally does scales by 1.5 but under
+ * STRESS_REALLOC it simply adds 1 */
+ IV new_max = GROW(new_floor); /* and some extra */
+
+ /* the new_max < PL_savestack_max is for cases where IV is I32
+ * and we have rolled over from I32_MAX to a small value */
+ if (new_max > I32_MAX || new_max < PL_savestack_max) {
+ if (new_floor > I32_MAX || new_floor < PL_savestack_max) {
+ Perl_croak(aTHX_ "panic: savestack overflows I32_MAX");
+ }
+ new_max = new_floor;
+ }
+
+ /* Note that we add an additional SS_MAXPUSH slots on top of
+ * PL_savestack_max so that SS_ADD_END(), SSGROW() etc can do
+ * a simper check and if necessary realloc *after* apparently
+ * overwriting the current PL_savestack_max. See scope.h.
+ *
+ * The +1 is because new_max/PL_savestack_max is the highest
+ * index, by Renew needs the number of items, which is one
+ * larger than the highest index. */
+ Renew(PL_savestack, new_max + SS_MAXPUSH + 1, ANY);
PL_savestack_max = new_max;
}
{
SSize_t extend_to = ix;
#ifndef STRESS_REALLOC
- if (ix - PL_tmps_max < 128)
- extend_to += (PL_tmps_max < 512) ? 128 : 512;
+ SSize_t grow_size = PL_tmps_max < 512 ? 128 : PL_tmps_max / 2;
+ if (extend_to > SSize_t_MAX - grow_size - 1)
+ /* trigger memwrap message or fail allocation */
+ extend_to = SSize_t_MAX-1;
+ else
+ extend_to += grow_size;
#endif
Renew(PL_tmps_stack, extend_to + 1, SV*);
PL_tmps_max = extend_to + 1;
/* XXX should tmps_floor live in cxstack? */
const SSize_t myfloor = PL_tmps_floor;
while (PL_tmps_ix > myfloor) { /* clean up after last statement */
- SV* const sv = PL_tmps_stack[PL_tmps_ix--];
+ SV* const sv = PL_tmps_stack[PL_tmps_ix--];
#ifdef PERL_POISON
- PoisonWith(PL_tmps_stack + PL_tmps_ix + 1, 1, SV *, 0xAB);
+ PoisonWith(PL_tmps_stack + PL_tmps_ix + 1, 1, SV *, 0xAB);
#endif
- if (LIKELY(sv)) {
- SvTEMP_off(sv);
- SvREFCNT_dec_NN(sv); /* note, can modify tmps_ix!!! */
- }
+ if (LIKELY(sv)) {
+ SvTEMP_off(sv);
+ SvREFCNT_dec_NN(sv); /* note, can modify tmps_ix!!! */
+ }
}
}
+/*
+=for apidoc save_scalar_at
+
+A helper function for localizing the SV referenced by C<*sptr>.
+
+If C<SAVEf_KEEPOLDELEM> is set in in C<flags>, the function returns the input
+scalar untouched.
+
+Otherwise it replaces C<*sptr> with a new C<undef> scalar, and returns that.
+The new scalar will have the old one's magic (if any) copied to it.
+If there is such magic, and C<SAVEf_SETMAGIC> is set in in C<flags>, 'set'
+magic will be processed on the new scalar. If unset, 'set' magic will be
+skipped. The latter typically means that assignment will soon follow (I<e.g.>,
+S<C<'local $x = $y'>>), and that will handle the magic.
+
+=for apidoc Amnh ||SAVEf_KEEPOLDELEM
+=for apidoc Amnh ||SAVEf_SETMAGIC
+
+=cut
+*/
+
STATIC SV *
S_save_scalar_at(pTHX_ SV **sptr, const U32 flags)
{
if (flags & SAVEf_KEEPOLDELEM)
sv = osv;
else {
- sv = (*sptr = newSV(0));
+ sv = (*sptr = newSV_type(SVt_NULL));
if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv))
mg_localize(osv, sv, cBOOL(flags & SAVEf_SETMAGIC));
}
return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
}
-/* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
- * restore a global SV to its prior contents, freeing new value. */
+/*
+=for apidoc save_generic_svref
+
+Implements C<SAVEGENERICSV>.
+
+Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
+restore a global SV to its prior contents, freeing new value.
+
+=cut
+ */
+
void
Perl_save_generic_svref(pTHX_ SV **sptr)
{
save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF);
}
-/* Like save_pptr(), but also Safefree()s the new value if it is different
- * from the old one. Can be used to restore a global char* to its prior
- * contents, freeing new value. */
+
+/*
+=for apidoc save_rcpv
+
+Implements C<SAVERCPV>.
+
+Saves and restores a refcounted string, similar to what
+save_generic_svref would do for a SV*. Can be used to restore
+a refcounted string to its previous state. Performs the
+appropriate refcount counting so that nothing should leak
+or be prematurely freed.
+
+=cut
+ */
+void
+Perl_save_rcpv(pTHX_ char **prcpv) {
+ PERL_ARGS_ASSERT_SAVE_RCPV;
+ save_pushptrptr(prcpv, rcpv_copy(*prcpv), SAVEt_RCPV);
+}
+
+/*
+=for apidoc save_freercpv
+
+Implements C<SAVEFREERCPV>.
+
+Saves and frees a refcounted string. Calls rcpv_free()
+on the argument when the current pseudo block is finished.
+
+=cut
+ */
+void
+Perl_save_freercpv(pTHX_ char *rcpv) {
+ PERL_ARGS_ASSERT_SAVE_FREERCPV;
+ save_pushptr(rcpv, SAVEt_FREERCPV);
+}
+
+
+/*
+=for apidoc_section $callback
+=for apidoc save_generic_pvref
+
+Implements C<SAVEGENERICPV>.
+
+Like save_pptr(), but also Safefree()s the new value if it is different
+from the old one. Can be used to restore a global char* to its prior
+contents, freeing new value.
+
+=cut
+ */
+
void
Perl_save_generic_pvref(pTHX_ char **str)
{
save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF);
}
-/* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
- * Can be used to restore a shared global char* to its prior
- * contents, freeing new value. */
+/*
+=for apidoc_section $callback
+=for apidoc save_shared_pvref
+
+Implements C<SAVESHAREDPV>.
+
+Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
+Can be used to restore a shared global char* to its prior
+contents, freeing new value.
+
+=cut
+ */
+
void
Perl_save_shared_pvref(pTHX_ char **str)
{
save_pushptrptr(str, *str, SAVEt_SHARED_PVREF);
}
-/* set the SvFLAGS specified by mask to the values in val */
+
+/*
+=for apidoc_section $callback
+=for apidoc save_set_svflags
+
+Implements C<SAVESETSVFLAGS>.
+
+Set the SvFLAGS specified by mask to the values in val
+
+=cut
+ */
void
Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
}
/*
+
+=for apidoc_section $GV
+
=for apidoc save_gp
Saves the current GP of gv on the save stack to be restored on scope exit.
-If empty is true, replace the GP with a new GP.
+If C<empty> is true, replace the GP with a new GP.
-If empty is false, mark gv with GVf_INTRO so the next reference
-assigned is localized, which is how C< local *foo = $someref; > works.
+If C<empty> is false, mark C<gv> with C<GVf_INTRO> so the next reference
+assigned is localized, which is how S<C< local *foo = $someref; >> works.
=cut
*/
{
PERL_ARGS_ASSERT_SAVE_GP;
+ /* XXX For now, we just upgrade any coderef in the stash to a full GV
+ during localisation. Maybe at some point we could make localis-
+ ation work without needing the upgrade. (In which case our
+ callers should probably call a different function, not save_gp.)
+ */
+ if (!isGV(gv)) {
+ assert(isGV_or_RVCV(gv));
+ (void)CvGV(SvRV((SV *)gv)); /* CvGV does the upgrade */
+ assert(isGV(gv));
+ }
+
save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP);
if (empty) {
- GP *gp = Perl_newGP(aTHX_ gv);
- HV * const stash = GvSTASH(gv);
- bool isa_changed = 0;
-
- if (stash && HvENAME(stash)) {
- if (GvNAMELEN(gv) == 3 && strnEQ(GvNAME(gv), "ISA", 3))
- isa_changed = TRUE;
- else if (GvCVu(gv))
- /* taking a method out of circulation ("local")*/
+ GP *gp = Perl_newGP(aTHX_ gv);
+ HV * const stash = GvSTASH(gv);
+ bool isa_changed = 0;
+
+ if (stash && HvHasENAME(stash)) {
+ if (memEQs(GvNAME(gv), GvNAMELEN(gv), "ISA"))
+ isa_changed = TRUE;
+ else if (GvCVu(gv))
+ /* taking a method out of circulation ("local")*/
mro_method_changed_in(stash);
- }
- if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
- gp->gp_io = newIO();
- IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
- }
- GvGP_set(gv,gp);
- if (isa_changed) mro_isa_changed_in(stash);
+ }
+ if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
+ gp->gp_io = newIO();
+ IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
+ }
+ GvGP_set(gv,gp);
+ if (isa_changed) mro_isa_changed_in(stash);
}
else {
- gp_ref(GvGP(gv));
- GvINTRO_on(gv);
+ gp_ref(GvGP(gv));
+ GvINTRO_on(gv);
}
}
PERL_ARGS_ASSERT_SAVE_ARY;
if (UNLIKELY(!AvREAL(oav) && AvREIFY(oav)))
- av_reify(oav);
+ av_reify(oav);
save_pushptrptr(SvREFCNT_inc_simple_NN(gv), oav, SAVEt_AV);
GvAV(gv) = NULL;
av = GvAVn(gv);
if (UNLIKELY(SvMAGIC(oav)))
- mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
+ mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
return av;
}
PERL_ARGS_ASSERT_SAVE_HASH;
save_pushptrptr(
- SvREFCNT_inc_simple_NN(gv), (ohv = GvHVn(gv)), SAVEt_HV
+ SvREFCNT_inc_simple_NN(gv), (ohv = GvHVn(gv)), SAVEt_HV
);
GvHV(gv) = NULL;
hv = GvHVn(gv);
if (UNLIKELY(SvMAGIC(ohv)))
- mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
+ mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
return hv;
}
PERL_ARGS_ASSERT_SAVE_ITEM;
save_pushptrptr(item, /* remember the pointer */
- sv, /* remember the value */
- SAVEt_ITEM);
+ sv, /* remember the value */
+ SAVEt_ITEM);
}
void
void
Perl_save_strlen(pTHX_ STRLEN *ptr)
{
+ const IV i = *ptr;
+ UV type = ((I32)((U32)i << SAVE_TIGHT_SHIFT) | SAVEt_STRLEN_SMALL);
+ int size = 2;
dSS_ADD;
PERL_ARGS_ASSERT_SAVE_STRLEN;
- SS_ADD_IV(*ptr);
+ if (UNLIKELY((I32)(type >> SAVE_TIGHT_SHIFT) != i)) {
+ SS_ADD_IV(*ptr);
+ type = SAVEt_STRLEN;
+ size++;
+ }
+
SS_ADD_PTR(ptr);
- SS_ADD_UV(SAVEt_STRLEN);
- SS_ADD_END(3);
+ SS_ADD_UV(type);
+ SS_ADD_END(size);
}
void
{
PERL_ARGS_ASSERT_SAVE_IV;
- SSCHECK(3);
+ SSGROW(3);
SSPUSHIV(*ivp);
SSPUSHPTR(ivp);
SSPUSHUV(SAVEt_IV);
save_pushptrptr(*pptr, pptr, SAVEt_PPTR);
}
+/*
+=for apidoc_section $callback
+=for apidoc save_vptr
+
+Implements C<SAVEVPTR>.
+
+=cut
+ */
+
void
Perl_save_vptr(pTHX_ void *ptr)
{
save_pushptrptr(*sptr, sptr, SAVEt_SPTR);
}
+/*
+=for apidoc_section $callback
+=for apidoc save_padsv_and_mortalize
+
+Implements C<SAVEPADSVANDMORTALIZE>.
+
+=cut
+ */
+
void
Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off)
{
save_pushptrptr(*aptr, aptr, SAVEt_APTR);
}
+/*
+=for apidoc_section $callback
+=for apidoc save_pushptr
+
+The refcnt of object C<ptr> will be decremented at the end of the current
+I<pseudo-block>. C<type> gives the type of C<ptr>, expressed as one of the
+constants in F<scope.h> whose name begins with C<SAVEt_>.
+
+This is the underlying implementation of several macros, like
+C<SAVEFREESV>.
+
+=cut
+*/
+
void
Perl_save_pushptr(pTHX_ void *const ptr, const int type)
{
PERL_ARGS_ASSERT_SAVE_CLEARSV;
ASSERT_CURPAD_ACTIVE("save_clearsv");
+ assert(*svp);
SvPADSTALE_off(*svp); /* mark lexical as active */
if (UNLIKELY((offset_shifted >> SAVE_TIGHT_SHIFT) != offset)) {
- Perl_croak(aTHX_ "panic: pad offset %" UVuf " out of range (%p-%p)",
- offset, svp, PL_curpad);
+ Perl_croak(aTHX_ "panic: pad offset %" UVuf " out of range (%p-%p)",
+ offset, svp, PL_curpad);
}
{
save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE);
}
+/*
+=for apidoc_section $callback
+=for apidoc save_hdelete
+
+Implements C<SAVEHDELETE>.
+
+=cut
+*/
+
void
Perl_save_hdelete(pTHX_ HV *hv, SV *keysv)
{
save_pushptri32ptr(savepvn(key, len), klen, hv, SAVEt_DELETE);
}
+/*
+=for apidoc_section $callback
+=for apidoc save_adelete
+
+Implements C<SAVEADELETE>.
+
+=cut
+*/
+
void
Perl_save_adelete(pTHX_ AV *av, SSize_t key)
{
SS_ADD_END(3);
}
+/*
+=for apidoc_section $callback
+=for apidoc save_hints
+
+Implements C<SAVEHINTS>.
+
+=cut
+ */
+
void
Perl_save_hints(pTHX)
{
COPHH *save_cophh = cophh_copy(CopHINTHASH_get(&PL_compiling));
if (PL_hints & HINT_LOCALIZE_HH) {
- HV *oldhh = GvHV(PL_hintgv);
- save_pushptri32ptr(oldhh, PL_hints, save_cophh, SAVEt_HINTS);
- GvHV(PL_hintgv) = NULL; /* in case copying dies */
- GvHV(PL_hintgv) = hv_copy_hints_hv(oldhh);
+ HV *oldhh = GvHV(PL_hintgv);
+ {
+ dSS_ADD;
+ SS_ADD_INT(PL_hints);
+ SS_ADD_PTR(save_cophh);
+ SS_ADD_PTR(oldhh);
+ SS_ADD_UV(SAVEt_HINTS_HH | (PL_prevailing_version << 8));
+ SS_ADD_END(4);
+ }
+ GvHV(PL_hintgv) = NULL; /* in case copying dies */
+ GvHV(PL_hintgv) = hv_copy_hints_hv(oldhh);
+ SAVEFEATUREBITS();
} else {
- save_pushi32ptr(PL_hints, save_cophh, SAVEt_HINTS);
+ save_pushi32ptr(PL_hints, save_cophh, SAVEt_HINTS | (PL_prevailing_version << 8));
}
}
static void
S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2,
- const int type)
+ const int type)
{
dSS_ADD;
SS_ADD_PTR(ptr1);
SS_ADD_END(4);
}
+/*
+=for apidoc_section $callback
+=for apidoc save_aelem
+=for apidoc_item save_aelem_flags
+
+These each arrange for the value of the array element C<av[idx]> to be restored
+at the end of the enclosing I<pseudo-block>.
+
+In C<save_aelem>, the SV at C**sptr> will be replaced by a new C<undef>
+scalar. That scalar will inherit any magic from the original C<**sptr>,
+and any 'set' magic will be processed.
+
+In C<save_aelem_flags>, C<SAVEf_KEEPOLDELEM> being set in C<flags> causes
+the function to forgo all that: the scalar at C<**sptr> is untouched.
+If C<SAVEf_KEEPOLDELEM> is not set, the SV at C**sptr> will be replaced by a
+new C<undef> scalar. That scalar will inherit any magic from the original
+C<**sptr>. Any 'set' magic will be processed if and only if C<SAVEf_SETMAGIC>
+is set in in C<flags>.
+
+=cut
+*/
+
void
Perl_save_aelem_flags(pTHX_ AV *av, SSize_t idx, SV **sptr,
- const U32 flags)
+ const U32 flags)
{
dSS_ADD;
SV *sv;
/* The array needs to hold a reference count on its new element, so it
must be AvREAL. */
if (UNLIKELY(!AvREAL(av) && AvREIFY(av)))
- av_reify(av);
+ av_reify(av);
save_scalar_at(sptr, flags); /* XXX - FIXME - see #60360 */
if (flags & SAVEf_KEEPOLDELEM)
- return;
+ return;
sv = *sptr;
/* If we're localizing a tied array element, this new sv
* won't actually be stored in the array - so it won't get
* reaped when the localize ends. Ensure it gets reaped by
* mortifying it instead. DAPM */
if (UNLIKELY(SvTIED_mg((const SV *)av, PERL_MAGIC_tied)))
- sv_2mortal(sv);
+ sv_2mortal(sv);
}
+/*
+=for apidoc_section $callback
+=for apidoc save_helem
+=for apidoc_item save_helem_flags
+
+These each arrange for the value of the hash element (in Perlish terms)
+C<$hv{key}]> to be restored at the end of the enclosing I<pseudo-block>.
+
+In C<save_helem>, the SV at C**sptr> will be replaced by a new C<undef>
+scalar. That scalar will inherit any magic from the original C<**sptr>,
+and any 'set' magic will be processed.
+
+In C<save_helem_flags>, C<SAVEf_KEEPOLDELEM> being set in C<flags> causes
+the function to forgo all that: the scalar at C<**sptr> is untouched.
+If C<SAVEf_KEEPOLDELEM> is not set, the SV at C**sptr> will be replaced by a
+new C<undef> scalar. That scalar will inherit any magic from the original
+C<**sptr>. Any 'set' magic will be processed if and only if C<SAVEf_SETMAGIC>
+is set in in C<flags>.
+
+=cut
+*/
+
void
Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
{
}
save_scalar_at(sptr, flags);
if (flags & SAVEf_KEEPOLDELEM)
- return;
+ return;
sv = *sptr;
/* If we're localizing a tied hash element, this new sv
* won't actually be stored in the hash - so it won't get
* reaped when the localize ends. Ensure it gets reaped by
* mortifying it instead. DAPM */
if (UNLIKELY(SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)))
- sv_2mortal(sv);
+ sv_2mortal(sv);
}
SV*
SS_ADD_END(2);
}
+/*
+=for apidoc_section $stack
+=for apidoc save_alloc
-I32
-Perl_save_alloc(pTHX_ I32 size, I32 pad)
+Implements L<perlapi/C<SSNEW>> and kin, which should be used instead of this
+function.
+
+=cut
+*/
+
+SSize_t
+Perl_save_alloc(pTHX_ SSize_t size, I32 pad)
{
- const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
+ const SSize_t start = pad + ((char*)&PL_savestack[PL_savestack_ix]
- (char*)PL_savestack);
const UV elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
const UV elems_shifted = elems << SAVE_TIGHT_SHIFT;
if (UNLIKELY((elems_shifted >> SAVE_TIGHT_SHIFT) != elems))
- Perl_croak(aTHX_
+ Perl_croak(aTHX_
"panic: save_alloc elems %" UVuf " out of range (%" IVdf "-%" IVdf ")",
- elems, (IV)size, (IV)pad);
+ elems, (IV)size, (IV)pad);
SSGROW(elems + 1);
}
-static const U8 arg_counts[] = {
- 0, /* SAVEt_ALLOC */
- 0, /* SAVEt_CLEARPADRANGE */
- 0, /* SAVEt_CLEARSV */
- 0, /* SAVEt_REGCONTEXT */
- 1, /* SAVEt_TMPSFLOOR */
- 1, /* SAVEt_BOOL */
- 1, /* SAVEt_COMPILE_WARNINGS */
- 1, /* SAVEt_COMPPAD */
- 1, /* SAVEt_FREECOPHH */
- 1, /* SAVEt_FREEOP */
- 1, /* SAVEt_FREEPV */
- 1, /* SAVEt_FREESV */
- 1, /* SAVEt_I16 */
- 1, /* SAVEt_I32_SMALL */
- 1, /* SAVEt_I8 */
- 1, /* SAVEt_INT_SMALL */
- 1, /* SAVEt_MORTALIZESV */
- 1, /* SAVEt_NSTAB */
- 1, /* SAVEt_OP */
- 1, /* SAVEt_PARSER */
- 1, /* SAVEt_STACK_POS */
- 1, /* SAVEt_READONLY_OFF */
- 1, /* SAVEt_FREEPADNAME */
- 2, /* SAVEt_AV */
- 2, /* SAVEt_DESTRUCTOR */
- 2, /* SAVEt_DESTRUCTOR_X */
- 2, /* SAVEt_GENERIC_PVREF */
- 2, /* SAVEt_GENERIC_SVREF */
- 2, /* SAVEt_GP */
- 2, /* SAVEt_GVSV */
- 2, /* SAVEt_HINTS */
- 2, /* SAVEt_HPTR */
- 2, /* SAVEt_HV */
- 2, /* SAVEt_I32 */
- 2, /* SAVEt_INT */
- 2, /* SAVEt_ITEM */
- 2, /* SAVEt_IV */
- 2, /* SAVEt_LONG */
- 2, /* SAVEt_PPTR */
- 2, /* SAVEt_SAVESWITCHSTACK */
- 2, /* SAVEt_SHARED_PVREF */
- 2, /* SAVEt_SPTR */
- 2, /* SAVEt_STRLEN */
- 2, /* SAVEt_SV */
- 2, /* SAVEt_SVREF */
- 2, /* SAVEt_VPTR */
- 2, /* SAVEt_ADELETE */
- 2, /* SAVEt_APTR */
- 3, /* SAVEt_HELEM */
- 3, /* SAVEt_PADSV_AND_MORTALIZE*/
- 3, /* SAVEt_SET_SVFLAGS */
- 3, /* SAVEt_GVSLOT */
- 3, /* SAVEt_AELEM */
- 3 /* SAVEt_DELETE */
-};
+/*
+=for apidoc_section $callback
+=for apidoc leave_scope
+
+Implements C<LEAVE_SCOPE> which you should use instead.
+
+=cut
+ */
void
Perl_leave_scope(pTHX_ I32 base)
bool was = TAINT_get;
if (UNLIKELY(base < -1))
- Perl_croak(aTHX_ "panic: corrupt saved stack index %ld", (long) base);
+ Perl_croak(aTHX_ "panic: corrupt saved stack index %ld", (long) base);
DEBUG_l(Perl_deb(aTHX_ "savestack: releasing items %ld -> %ld\n",
- (long)PL_savestack_ix, (long)base));
+ (long)PL_savestack_ix, (long)base));
while (PL_savestack_ix > base) {
- UV uv;
- U8 type;
+ UV uv;
+ U8 type;
ANY *ap; /* arg pointer */
ANY a0, a1, a2; /* up to 3 args */
- TAINT_NOT;
+ TAINT_NOT;
{
U8 argcount;
ap = &PL_savestack[ix];
uv = ap->any_uv;
type = (U8)uv & SAVE_MASK;
- argcount = arg_counts[type];
+ argcount = leave_scope_arg_counts[type];
PL_savestack_ix = ix - argcount;
ap -= argcount;
}
- switch (type) {
- case SAVEt_ITEM: /* normal string */
+ switch (type) {
+ case SAVEt_ITEM: /* normal string */
a0 = ap[0]; a1 = ap[1];
- sv_replace(a0.any_sv, a1.any_sv);
+ sv_replace(a0.any_sv, a1.any_sv);
if (UNLIKELY(SvSMAGICAL(a0.any_sv))) {
PL_localizing = 2;
mg_set(a0.any_sv);
PL_localizing = 0;
}
- break;
+ break;
- /* This would be a mathom, but Perl_save_svref() calls a static
- function, S_save_scalar_at(), so has to stay in this file. */
- case SAVEt_SVREF: /* scalar reference */
+ /* This would be a mathom, but Perl_save_svref() calls a static
+ function, S_save_scalar_at(), so has to stay in this file. */
+ case SAVEt_SVREF: /* scalar reference */
a0 = ap[0]; a1 = ap[1];
- a2.any_svp = a0.any_svp;
- a0.any_sv = NULL; /* what to refcnt_dec */
- goto restore_sv;
+ a2.any_svp = a0.any_svp;
+ a0.any_sv = NULL; /* what to refcnt_dec */
+ goto restore_sv;
- case SAVEt_SV: /* scalar reference */
+ case SAVEt_SV: /* scalar reference */
a0 = ap[0]; a1 = ap[1];
- a2.any_svp = &GvSV(a0.any_gv);
- restore_sv:
+ a2.any_svp = &GvSV(a0.any_gv);
+ restore_sv:
{
/* do *a2.any_svp = a1 and free a0 */
- SV * const sv = *a2.any_svp;
- *a2.any_svp = a1.any_sv;
- SvREFCNT_dec(sv);
+ SV * const sv = *a2.any_svp;
+ *a2.any_svp = a1.any_sv;
+ SvREFCNT_dec(sv);
if (UNLIKELY(SvSMAGICAL(a1.any_sv))) {
/* mg_set could die, skipping the freeing of a0 and
* a1; Ensure that they're always freed in that case */
PL_localizing = 0;
break;
}
- SvREFCNT_dec_NN(a1.any_sv);
- SvREFCNT_dec(a0.any_sv);
- break;
+ SvREFCNT_dec_NN(a1.any_sv);
+ SvREFCNT_dec(a0.any_sv);
+ break;
}
- case SAVEt_GENERIC_PVREF: /* generic pv */
+ case SAVEt_GENERIC_PVREF: /* generic pv */
a0 = ap[0]; a1 = ap[1];
- if (*a1.any_pvp != a0.any_pv) {
- Safefree(*a1.any_pvp);
- *a1.any_pvp = a0.any_pv;
- }
- break;
+ if (*a1.any_pvp != a0.any_pv) {
+ Safefree(*a1.any_pvp);
+ *a1.any_pvp = a0.any_pv;
+ }
+ break;
- case SAVEt_SHARED_PVREF: /* shared pv */
+ case SAVEt_SHARED_PVREF: /* shared pv */
a0 = ap[0]; a1 = ap[1];
- if (*a0.any_pvp != a1.any_pv) {
-#ifdef NETWARE
- PerlMem_free(*a0.any_pvp);
-#else
- PerlMemShared_free(*a0.any_pvp);
-#endif
- *a0.any_pvp = a1.any_pv;
- }
- break;
+ if (*a0.any_pvp != a1.any_pv) {
+ PerlMemShared_free(*a0.any_pvp);
+ *a0.any_pvp = a1.any_pv;
+ }
+ break;
- case SAVEt_GVSV: /* scalar slot in GV */
+ case SAVEt_GVSV: /* scalar slot in GV */
a0 = ap[0]; a1 = ap[1];
- a0.any_svp = &GvSV(a0.any_gv);
- goto restore_svp;
+ a0.any_svp = &GvSV(a0.any_gv);
+ goto restore_svp;
- case SAVEt_GENERIC_SVREF: /* generic sv */
+
+ case SAVEt_GENERIC_SVREF: /* generic sv */
a0 = ap[0]; a1 = ap[1];
- restore_svp:
+ restore_svp:
{
/* do *a0.any_svp = a1 */
- SV * const sv = *a0.any_svp;
- *a0.any_svp = a1.any_sv;
- SvREFCNT_dec(sv);
- SvREFCNT_dec(a1.any_sv);
- break;
+ SV * const sv = *a0.any_svp;
+ *a0.any_svp = a1.any_sv;
+ SvREFCNT_dec(sv);
+ SvREFCNT_dec(a1.any_sv);
+ break;
+ }
+
+ case SAVEt_RCPV: /* like generic sv, but for struct rcpv */
+ {
+ a0 = ap[0]; a1 = ap[1];
+ char *old = *a0.any_pvp;
+ *a0.any_pvp = a1.any_pv;
+ (void)rcpv_free(old);
+ (void)rcpv_free(a1.any_pv);
+ break;
}
- case SAVEt_GVSLOT: /* any slot in GV */
+ case SAVEt_FREERCPV: /* like SAVEt_FREEPV but for a RCPV */
+ {
+ a0 = ap[0];
+ char *rcpv = a0.any_pv;
+ (void)rcpv_free(rcpv);
+ break;
+ }
+
+ case SAVEt_GVSLOT: /* any slot in GV */
{
HV * hv;
a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
hv = GvSTASH(a0.any_gv);
- if (hv && HvENAME(hv) && (
- (a2.any_sv && SvTYPE(a2.any_sv) == SVt_PVCV)
- || (*a1.any_svp && SvTYPE(*a1.any_svp) == SVt_PVCV)
- ))
- {
- if ((char *)a1.any_svp < (char *)GvGP(a0.any_gv)
- || (char *)a1.any_svp > (char *)GvGP(a0.any_gv) + sizeof(struct gp)
- || GvREFCNT(a0.any_gv) > 2) /* "> 2" to ignore savestack's ref */
- PL_sub_generation++;
- else mro_method_changed_in(hv);
- }
+ if (hv && HvHasENAME(hv) && (
+ (a2.any_sv && SvTYPE(a2.any_sv) == SVt_PVCV)
+ || (*a1.any_svp && SvTYPE(*a1.any_svp) == SVt_PVCV)
+ ))
+ {
+ if ((char *)a1.any_svp < (char *)GvGP(a0.any_gv)
+ || (char *)a1.any_svp > (char *)GvGP(a0.any_gv) + sizeof(struct gp)
+ || GvREFCNT(a0.any_gv) > 2) /* "> 2" to ignore savestack's ref */
+ PL_sub_generation++;
+ else mro_method_changed_in(hv);
+ }
a0.any_svp = a1.any_svp;
a1.any_sv = a2.any_sv;
- goto restore_svp;
+ goto restore_svp;
}
- case SAVEt_AV: /* array reference */
+ case SAVEt_AV: /* array reference */
a0 = ap[0]; a1 = ap[1];
- SvREFCNT_dec(GvAV(a0.any_gv));
- GvAV(a0.any_gv) = a1.any_av;
+ SvREFCNT_dec(GvAV(a0.any_gv));
+ GvAV(a0.any_gv) = a1.any_av;
avhv_common:
if (UNLIKELY(SvSMAGICAL(a1.any_sv))) {
/* mg_set might die, so make sure a0 isn't leaked */
PL_localizing = 0;
break;
}
- SvREFCNT_dec_NN(a0.any_sv);
- break;
+ SvREFCNT_dec_NN(a0.any_sv);
+ break;
- case SAVEt_HV: /* hash reference */
+ case SAVEt_HV: /* hash reference */
a0 = ap[0]; a1 = ap[1];
- SvREFCNT_dec(GvHV(a0.any_gv));
- GvHV(a0.any_gv) = a1.any_hv;
+ SvREFCNT_dec(GvHV(a0.any_gv));
+ GvHV(a0.any_gv) = a1.any_hv;
goto avhv_common;
- case SAVEt_INT_SMALL:
+ case SAVEt_INT_SMALL:
a0 = ap[0];
- *(int*)a0.any_ptr = (int)(uv >> SAVE_TIGHT_SHIFT);
- break;
+ *(int*)a0.any_ptr = (int)(uv >> SAVE_TIGHT_SHIFT);
+ break;
- case SAVEt_INT: /* int reference */
+ case SAVEt_INT: /* int reference */
a0 = ap[0]; a1 = ap[1];
- *(int*)a1.any_ptr = (int)a0.any_i32;
- break;
+ *(int*)a1.any_ptr = (int)a0.any_i32;
+ break;
+
+ case SAVEt_STRLEN_SMALL:
+ a0 = ap[0];
+ *(STRLEN*)a0.any_ptr = (STRLEN)(uv >> SAVE_TIGHT_SHIFT);
+ break;
- case SAVEt_STRLEN: /* STRLEN/size_t ref */
+ case SAVEt_STRLEN: /* STRLEN/size_t ref */
a0 = ap[0]; a1 = ap[1];
- *(STRLEN*)a1.any_ptr = (STRLEN)a0.any_iv;
- break;
+ *(STRLEN*)a1.any_ptr = (STRLEN)a0.any_iv;
+ break;
- case SAVEt_TMPSFLOOR: /* restore PL_tmps_floor */
+ case SAVEt_TMPSFLOOR: /* restore PL_tmps_floor */
a0 = ap[0];
- PL_tmps_floor = (SSize_t)a0.any_iv;
- break;
+ PL_tmps_floor = (SSize_t)a0.any_iv;
+ break;
- case SAVEt_BOOL: /* bool reference */
+ case SAVEt_BOOL: /* bool reference */
a0 = ap[0];
- *(bool*)a0.any_ptr = cBOOL(uv >> 8);
+ *(bool*)a0.any_ptr = cBOOL(uv >> 8);
#ifdef NO_TAINT_SUPPORT
PERL_UNUSED_VAR(was);
#else
- if (UNLIKELY(a0.any_ptr == &(TAINT_get))) {
- /* If we don't update <was>, to reflect what was saved on the
- * stack for PL_tainted, then we will overwrite this attempt to
- * restore it when we exit this routine. Note that this won't
- * work if this value was saved in a wider-than necessary type,
- * such as I32 */
- was = *(bool*)a0.any_ptr;
- }
+ if (UNLIKELY(a0.any_ptr == &(PL_tainted))) {
+ /* If we don't update <was>, to reflect what was saved on the
+ * stack for PL_tainted, then we will overwrite this attempt to
+ * restore it when we exit this routine. Note that this won't
+ * work if this value was saved in a wider-than necessary type,
+ * such as I32 */
+ was = *(bool*)a0.any_ptr;
+ }
#endif
- break;
+ break;
- case SAVEt_I32_SMALL:
+ case SAVEt_I32_SMALL:
a0 = ap[0];
- *(I32*)a0.any_ptr = (I32)(uv >> SAVE_TIGHT_SHIFT);
- break;
+ *(I32*)a0.any_ptr = (I32)(uv >> SAVE_TIGHT_SHIFT);
+ break;
- case SAVEt_I32: /* I32 reference */
+ case SAVEt_I32: /* I32 reference */
a0 = ap[0]; a1 = ap[1];
#ifdef PERL_DEBUG_READONLY_OPS
if (*(I32*)a1.any_ptr != a0.any_i32)
#endif
*(I32*)a1.any_ptr = a0.any_i32;
- break;
+ break;
- case SAVEt_SPTR: /* SV* reference */
- case SAVEt_VPTR: /* random* reference */
- case SAVEt_PPTR: /* char* reference */
- case SAVEt_HPTR: /* HV* reference */
- case SAVEt_APTR: /* AV* reference */
+ case SAVEt_SPTR: /* SV* reference */
+ case SAVEt_VPTR: /* random* reference */
+ case SAVEt_PPTR: /* char* reference */
+ case SAVEt_HPTR: /* HV* reference */
+ case SAVEt_APTR: /* AV* reference */
a0 = ap[0]; a1 = ap[1];
- *a1.any_svp= a0.any_sv;
- break;
+ *a1.any_svp= a0.any_sv;
+ break;
- case SAVEt_GP: /* scalar reference */
+ case SAVEt_GP: /* scalar reference */
{
HV *hv;
- bool had_method;
+ bool had_method;
a0 = ap[0]; a1 = ap[1];
/* possibly taking a method out of circulation */
- had_method = !!GvCVu(a0.any_gv);
- gp_free(a0.any_gv);
- GvGP_set(a0.any_gv, (GP*)a1.any_ptr);
- if ((hv=GvSTASH(a0.any_gv)) && HvENAME_get(hv)) {
- if ( GvNAMELEN(a0.any_gv) == 3
- && strnEQ(GvNAME(a0.any_gv), "ISA", 3)
- )
- mro_isa_changed_in(hv);
+ had_method = cBOOL(GvCVu(a0.any_gv));
+ gp_free(a0.any_gv);
+ GvGP_set(a0.any_gv, (GP*)a1.any_ptr);
+ if ((hv=GvSTASH(a0.any_gv)) && HvHasENAME(hv)) {
+ if (memEQs(GvNAME(a0.any_gv), GvNAMELEN(a0.any_gv), "ISA"))
+ mro_isa_changed_in(hv);
else if (had_method || GvCVu(a0.any_gv))
/* putting a method back into circulation ("local")*/
gv_method_changed(a0.any_gv);
- }
- SvREFCNT_dec_NN(a0.any_gv);
- break;
+ }
+ SvREFCNT_dec_NN(a0.any_gv);
+ break;
}
- case SAVEt_FREESV:
+ case SAVEt_FREESV:
a0 = ap[0];
- SvREFCNT_dec(a0.any_sv);
- break;
+ SvREFCNT_dec(a0.any_sv);
+ break;
- case SAVEt_FREEPADNAME:
+ case SAVEt_FREEPADNAME:
a0 = ap[0];
- PadnameREFCNT_dec((PADNAME *)a0.any_ptr);
- break;
+ PadnameREFCNT_dec((PADNAME *)a0.any_ptr);
+ break;
- case SAVEt_FREECOPHH:
+ case SAVEt_FREECOPHH:
a0 = ap[0];
- cophh_free((COPHH *)a0.any_ptr);
- break;
+ cophh_free((COPHH *)a0.any_ptr);
+ break;
- case SAVEt_MORTALIZESV:
+ case SAVEt_MORTALIZESV:
a0 = ap[0];
- sv_2mortal(a0.any_sv);
- break;
+ sv_2mortal(a0.any_sv);
+ break;
- case SAVEt_FREEOP:
+ case SAVEt_FREEOP:
a0 = ap[0];
- ASSERT_CURPAD_LEGAL("SAVEt_FREEOP");
- op_free(a0.any_op);
- break;
+ ASSERT_CURPAD_LEGAL("SAVEt_FREEOP");
+ op_free(a0.any_op);
+ break;
- case SAVEt_FREEPV:
+ case SAVEt_FREEPV:
a0 = ap[0];
- Safefree(a0.any_ptr);
- break;
+ Safefree(a0.any_ptr);
+ break;
case SAVEt_CLEARPADRANGE:
{
I32 i;
- SV **svp;
+ SV **svp;
i = (I32)((uv >> SAVE_TIGHT_SHIFT) & OPpPADRANGE_COUNTMASK);
svp = &PL_curpad[uv >>
(OPpPADRANGE_COUNTSHIFT + SAVE_TIGHT_SHIFT)] + i - 1;
goto clearsv;
- case SAVEt_CLEARSV:
- svp = &PL_curpad[uv >> SAVE_TIGHT_SHIFT];
+ case SAVEt_CLEARSV:
+ svp = &PL_curpad[uv >> SAVE_TIGHT_SHIFT];
i = 1;
clearsv:
for (; i; i--, svp--) {
if (SvREADONLY(sv))
SvREADONLY_off(sv);
- if (SvOOK(sv)) { /* OOK or HvAUX */
- if (SvTYPE(sv) == SVt_PVHV)
- Perl_hv_kill_backrefs(aTHX_ MUTABLE_HV(sv));
- else
- sv_backoff(sv);
- }
+ if (SvTYPE(sv) == SVt_PVHV && HvHasAUX(sv))
+ Perl_hv_kill_backrefs(aTHX_ MUTABLE_HV(sv));
+ else if(SvOOK(sv))
+ sv_backoff(sv);
if (SvMAGICAL(sv)) {
/* note that backrefs (either in HvAUX or magic)
break;
case SVt_PVCV:
{
- HEK *hek =
- CvNAMED(sv)
- ? CvNAME_HEK((CV *)sv)
- : GvNAME_HEK(CvGV(sv));
+ HEK *hek = CvGvNAME_HEK(sv);
assert(hek);
(void)share_hek_hek(hek);
cv_undef((CV *)sv);
case SVt_PVHV: *svp = MUTABLE_SV(newHV()); break;
case SVt_PVCV:
{
- HEK * const hek = CvNAMED(sv)
- ? CvNAME_HEK((CV *)sv)
- : GvNAME_HEK(CvGV(sv));
+ HEK * const hek = CvGvNAME_HEK(sv);
/* Create a stub */
*svp = newSV_type(SVt_PVCV);
CvLEXICAL_on(*svp);
break;
}
- default: *svp = newSV(0); break;
+ default: *svp = newSV_type(SVt_NULL); break;
}
SvREFCNT_dec_NN(sv); /* Cast current value to the winds. */
/* preserve pad nature, but also mark as not live
SvFLAGS(*svp) |= SVs_PADSTALE;
}
}
- break;
+ break;
}
- case SAVEt_DELETE:
+ case SAVEt_DELETE:
a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
- (void)hv_delete(a2.any_hv, a0.any_pv, a1.any_i32, G_DISCARD);
- SvREFCNT_dec(a2.any_hv);
- Safefree(a0.any_ptr);
- break;
-
- case SAVEt_ADELETE:
+ /* hv_delete could die, so free the key and SvREFCNT_dec the
+ * hv by pushing new save actions
+ */
+ /* ap[0] is the key */
+ ap[1].any_uv = SAVEt_FREEPV; /* was len */
+ /* ap[2] is the hv */
+ ap[3].any_uv = SAVEt_FREESV; /* was SAVEt_DELETE */
+ PL_savestack_ix += 4;
+ (void)hv_delete(a2.any_hv, a0.any_pv, a1.any_i32, G_DISCARD);
+ break;
+
+ case SAVEt_ADELETE:
a0 = ap[0]; a1 = ap[1];
- (void)av_delete(a1.any_av, a0.any_iv, G_DISCARD);
- SvREFCNT_dec(a1.any_av);
- break;
-
- case SAVEt_DESTRUCTOR_X:
+ /* av_delete could die, so SvREFCNT_dec the av by pushing a
+ * new save action
+ */
+ ap[0].any_av = a1.any_av;
+ ap[1].any_uv = SAVEt_FREESV;
+ PL_savestack_ix += 2;
+ (void)av_delete(a1.any_av, a0.any_iv, G_DISCARD);
+ break;
+
+ case SAVEt_DESTRUCTOR_X:
a0 = ap[0]; a1 = ap[1];
- (*a0.any_dxptr)(aTHX_ a1.any_ptr);
- break;
-
- case SAVEt_REGCONTEXT:
- /* regexp must have croaked */
- case SAVEt_ALLOC:
- PL_savestack_ix -= uv >> SAVE_TIGHT_SHIFT;
- break;
-
- case SAVEt_STACK_POS: /* Position on Perl stack */
+ (*a0.any_dxptr)(aTHX_ a1.any_ptr);
+ break;
+
+ case SAVEt_REGCONTEXT:
+ /* regexp must have croaked */
+ case SAVEt_ALLOC:
+ PL_savestack_ix -= uv >> SAVE_TIGHT_SHIFT;
+ break;
+
+ case SAVEt_STACK_POS: /* Position on Perl stack */
+#ifdef PERL_RC_STACK
+ /* DAPM Jan 2023. I don't think this save type is used any
+ * more, but if some XS code uses it, fail it for now, as
+ * it's not clear to me what perl should be doing to stack ref
+ * counts when arbitrarily resetting the stack pointer.
+ */
+ assert(0);
+#endif
a0 = ap[0];
- PL_stack_sp = PL_stack_base + a0.any_i32;
- break;
+ PL_stack_sp = PL_stack_base + a0.any_i32;
+ break;
- case SAVEt_AELEM: /* array element */
+ case SAVEt_AELEM: /* array element */
{
SV **svp;
a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
- svp = av_fetch(a0.any_av, a1.any_iv, 1);
- if (UNLIKELY(!AvREAL(a0.any_av) && AvREIFY(a0.any_av))) /* undo reify guard */
- SvREFCNT_dec(a2.any_sv);
- if (LIKELY(svp)) {
- SV * const sv = *svp;
- if (LIKELY(sv && sv != &PL_sv_undef)) {
- if (UNLIKELY(SvTIED_mg((const SV *)a0.any_av, PERL_MAGIC_tied)))
- SvREFCNT_inc_void_NN(sv);
+ svp = av_fetch(a0.any_av, a1.any_iv, 1);
+ if (UNLIKELY(!AvREAL(a0.any_av) && AvREIFY(a0.any_av))) /* undo reify guard */
+ SvREFCNT_dec(a2.any_sv);
+ if (LIKELY(svp)) {
+ SV * const sv = *svp;
+ if (LIKELY(sv && sv != &PL_sv_undef)) {
+ if (UNLIKELY(SvTIED_mg((const SV *)a0.any_av, PERL_MAGIC_tied)))
+ SvREFCNT_inc_void_NN(sv);
a1.any_sv = a2.any_sv;
a2.any_svp = svp;
- goto restore_sv;
- }
- }
- SvREFCNT_dec(a0.any_av);
- SvREFCNT_dec(a2.any_sv);
- break;
+ goto restore_sv;
+ }
+ }
+ SvREFCNT_dec(a0.any_av);
+ SvREFCNT_dec(a2.any_sv);
+ break;
}
- case SAVEt_HELEM: /* hash element */
+ case SAVEt_HELEM: /* hash element */
{
- HE *he;
+ HE *he;
a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
- he = hv_fetch_ent(a0.any_hv, a1.any_sv, 1, 0);
- SvREFCNT_dec(a1.any_sv);
- if (LIKELY(he)) {
- const SV * const oval = HeVAL(he);
- if (LIKELY(oval && oval != &PL_sv_undef)) {
+ he = hv_fetch_ent(a0.any_hv, a1.any_sv, 1, 0);
+ SvREFCNT_dec(a1.any_sv);
+ if (LIKELY(he)) {
+ const SV * const oval = HeVAL(he);
+ if (LIKELY(oval && oval != &PL_sv_undef)) {
SV **svp = &HeVAL(he);
- if (UNLIKELY(SvTIED_mg((const SV *)a0.any_hv, PERL_MAGIC_tied)))
- SvREFCNT_inc_void(*svp);
+ if (UNLIKELY(SvTIED_mg((const SV *)a0.any_hv, PERL_MAGIC_tied)))
+ SvREFCNT_inc_void(*svp);
a1.any_sv = a2.any_sv;
a2.any_svp = svp;
- goto restore_sv;
- }
- }
- SvREFCNT_dec(a0.any_hv);
- SvREFCNT_dec(a2.any_sv);
- break;
+ goto restore_sv;
+ }
+ }
+ SvREFCNT_dec(a0.any_hv);
+ SvREFCNT_dec(a2.any_sv);
+ break;
}
- case SAVEt_OP:
+ case SAVEt_OP:
a0 = ap[0];
- PL_op = (OP*)a0.any_ptr;
- break;
+ PL_op = (OP*)a0.any_ptr;
+ break;
- case SAVEt_HINTS:
+ case SAVEt_HINTS_HH:
+ a2 = ap[2];
+ /* FALLTHROUGH */
+ case SAVEt_HINTS:
a0 = ap[0]; a1 = ap[1];
- if ((PL_hints & HINT_LOCALIZE_HH)) {
- while (GvHV(PL_hintgv)) {
- HV *hv = GvHV(PL_hintgv);
- GvHV(PL_hintgv) = NULL;
- SvREFCNT_dec(MUTABLE_SV(hv));
- }
- }
- cophh_free(CopHINTHASH_get(&PL_compiling));
- CopHINTHASH_set(&PL_compiling, (COPHH*)a1.any_ptr);
- *(I32*)&PL_hints = a0.any_i32;
- if (PL_hints & HINT_LOCALIZE_HH) {
- SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
- GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
- }
- if (!GvHV(PL_hintgv)) {
- /* Need to add a new one manually, else rv2hv can
- add one via GvHVn and it won't have the magic set. */
- HV *const hv = newHV();
- hv_magic(hv, NULL, PERL_MAGIC_hints);
- GvHV(PL_hintgv) = hv;
- }
- assert(GvHV(PL_hintgv));
- break;
-
- case SAVEt_COMPPAD:
+ if ((PL_hints & HINT_LOCALIZE_HH)) {
+ while (GvHV(PL_hintgv)) {
+ HV *hv = GvHV(PL_hintgv);
+ GvHV(PL_hintgv) = NULL;
+ SvREFCNT_dec(MUTABLE_SV(hv));
+ }
+ }
+ cophh_free(CopHINTHASH_get(&PL_compiling));
+ CopHINTHASH_set(&PL_compiling, (COPHH*)a1.any_ptr);
+ *(I32*)&PL_hints = a0.any_i32;
+ PL_prevailing_version = (U16)(uv >> 8);
+ if (type == SAVEt_HINTS_HH) {
+ SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
+ GvHV(PL_hintgv) = MUTABLE_HV(a2.any_ptr);
+ }
+ if (!GvHV(PL_hintgv)) {
+ /* Need to add a new one manually, else rv2hv can
+ add one via GvHVn and it won't have the magic set. */
+ HV *const hv = newHV();
+ hv_magic(hv, NULL, PERL_MAGIC_hints);
+ GvHV(PL_hintgv) = hv;
+ }
+ assert(GvHV(PL_hintgv));
+ break;
+
+ case SAVEt_COMPPAD:
a0 = ap[0];
- PL_comppad = (PAD*)a0.any_ptr;
- if (LIKELY(PL_comppad))
- PL_curpad = AvARRAY(PL_comppad);
- else
- PL_curpad = NULL;
- break;
+ PL_comppad = (PAD*)a0.any_ptr;
+ if (LIKELY(PL_comppad))
+ PL_curpad = AvARRAY(PL_comppad);
+ else
+ PL_curpad = NULL;
+ break;
- case SAVEt_PADSV_AND_MORTALIZE:
- {
- SV **svp;
+ case SAVEt_PADSV_AND_MORTALIZE:
+ {
+ SV **svp;
a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
- assert (a1.any_ptr);
- svp = AvARRAY((PAD*)a1.any_ptr) + (PADOFFSET)a2.any_uv;
+ assert (a1.any_ptr);
+ svp = AvARRAY((PAD*)a1.any_ptr) + (PADOFFSET)a2.any_uv;
/* This mortalizing used to be done by CX_POOPLOOP() via
itersave. But as we have all the information here, we
can do it here, save even having to have itersave in
the struct.
*/
- sv_2mortal(*svp);
- *svp = a0.any_sv;
- }
- break;
+ sv_2mortal(*svp);
+ *svp = a0.any_sv;
+ }
+ break;
- case SAVEt_SAVESWITCHSTACK:
- {
- dSP;
+ case SAVEt_SAVESWITCHSTACK:
+ {
+ dSP;
a0 = ap[0]; a1 = ap[1];
- SWITCHSTACK(a1.any_av, a0.any_av);
- PL_curstackinfo->si_stack = a0.any_av;
- }
- break;
+ SWITCHSTACK(a1.any_av, a0.any_av);
+ PL_curstackinfo->si_stack = a0.any_av;
+ }
+ break;
- case SAVEt_SET_SVFLAGS:
+ case SAVEt_SET_SVFLAGS:
a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
SvFLAGS(a0.any_sv) &= ~(a1.any_u32);
SvFLAGS(a0.any_sv) |= a2.any_u32;
- break;
+ break;
- /* These are only saved in mathoms.c */
- case SAVEt_NSTAB:
+ /* These are only saved in mathoms.c */
+ case SAVEt_NSTAB:
a0 = ap[0];
- (void)sv_clear(a0.any_sv);
- break;
+ (void)sv_clear(a0.any_sv);
+ break;
- case SAVEt_LONG: /* long reference */
+ case SAVEt_LONG: /* long reference */
a0 = ap[0]; a1 = ap[1];
- *(long*)a1.any_ptr = a0.any_long;
- break;
+ *(long*)a1.any_ptr = a0.any_long;
+ break;
- case SAVEt_IV: /* IV reference */
+ case SAVEt_IV: /* IV reference */
a0 = ap[0]; a1 = ap[1];
- *(IV*)a1.any_ptr = a0.any_iv;
- break;
+ *(IV*)a1.any_ptr = a0.any_iv;
+ break;
- case SAVEt_I16: /* I16 reference */
+ case SAVEt_I16: /* I16 reference */
a0 = ap[0];
- *(I16*)a0.any_ptr = (I16)(uv >> 8);
- break;
+ *(I16*)a0.any_ptr = (I16)(uv >> 8);
+ break;
- case SAVEt_I8: /* I8 reference */
+ case SAVEt_I8: /* I8 reference */
a0 = ap[0];
- *(I8*)a0.any_ptr = (I8)(uv >> 8);
- break;
+ *(I8*)a0.any_ptr = (I8)(uv >> 8);
+ break;
- case SAVEt_DESTRUCTOR:
+ case SAVEt_DESTRUCTOR:
a0 = ap[0]; a1 = ap[1];
- (*a0.any_dptr)(a1.any_ptr);
- break;
+ (*a0.any_dptr)(a1.any_ptr);
+ break;
+
+ case SAVEt_COMPILE_WARNINGS:
+ /* NOTE: we can't put &PL_compiling or PL_curcop on the save
+ * stack directly, as we currently cannot translate
+ * them to the correct addresses after a thread start
+ * or win32 fork start. - Yves
+ */
+ a0 = ap[0];
+ free_and_set_cop_warnings(&PL_compiling, a0.any_pv);
+ break;
- case SAVEt_COMPILE_WARNINGS:
+ case SAVEt_CURCOP_WARNINGS:
+ /* NOTE: see comment above about SAVEt_COMPILE_WARNINGS */
a0 = ap[0];
- if (!specialWARN(PL_compiling.cop_warnings))
- PerlMemShared_free(PL_compiling.cop_warnings);
- PL_compiling.cop_warnings = (STRLEN*)a0.any_ptr;
- break;
+ free_and_set_cop_warnings(PL_curcop, a0.any_pv);
+ break;
- case SAVEt_PARSER:
+ case SAVEt_PARSER:
a0 = ap[0];
- parser_free((yy_parser *)a0.any_ptr);
- break;
+ parser_free((yy_parser *)a0.any_ptr);
+ break;
- case SAVEt_READONLY_OFF:
+ case SAVEt_READONLY_OFF:
a0 = ap[0];
- SvREADONLY_off(a0.any_sv);
- break;
+ SvREADONLY_off(a0.any_sv);
+ break;
- default:
- Perl_croak(aTHX_ "panic: leave_scope inconsistency %u",
+ default:
+ Perl_croak(aTHX_ "panic: leave_scope inconsistency %u",
(U8)uv & SAVE_MASK);
- }
+ }
}
TAINT_set(was);
#ifdef DEBUGGING
PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
if (CxTYPE(cx) != CXt_SUBST) {
- const char *gimme_text;
- PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
- PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%" UVxf "\n",
- PTR2UV(cx->blk_oldcop));
- PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
- PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
- PerlIO_printf(Perl_debug_log, "BLK_OLDSAVEIX = %ld\n", (long)cx->blk_oldsaveix);
- PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%" UVxf "\n",
- PTR2UV(cx->blk_oldpm));
- switch (cx->blk_gimme) {
- case G_VOID:
- gimme_text = "VOID";
- break;
- case G_SCALAR:
- gimme_text = "SCALAR";
- break;
- case G_ARRAY:
- gimme_text = "LIST";
- break;
- default:
- gimme_text = "UNKNOWN";
- break;
- }
- PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", gimme_text);
+ const char *gimme_text;
+ PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
+ PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_oldcop));
+ PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
+ PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
+ PerlIO_printf(Perl_debug_log, "BLK_OLDSAVEIX = %ld\n", (long)cx->blk_oldsaveix);
+ PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_oldpm));
+ switch (cx->blk_gimme) {
+ case G_VOID:
+ gimme_text = "VOID";
+ break;
+ case G_SCALAR:
+ gimme_text = "SCALAR";
+ break;
+ case G_LIST:
+ gimme_text = "LIST";
+ break;
+ default:
+ gimme_text = "UNKNOWN";
+ break;
+ }
+ PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", gimme_text);
}
switch (CxTYPE(cx)) {
case CXt_NULL:
case CXt_BLOCK:
- break;
+ case CXt_DEFER:
+ break;
case CXt_FORMAT:
- PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%" UVxf "\n",
- PTR2UV(cx->blk_format.cv));
- PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%" UVxf "\n",
- PTR2UV(cx->blk_format.gv));
- PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%" UVxf "\n",
- PTR2UV(cx->blk_format.dfoutgv));
- PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
- (int)CxHASARGS(cx));
- PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%" UVxf "\n",
- PTR2UV(cx->blk_format.retop));
- break;
+ PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_format.cv));
+ PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_format.gv));
+ PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_format.dfoutgv));
+ PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
+ (int)CxHASARGS(cx));
+ PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_format.retop));
+ break;
case CXt_SUB:
- PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%" UVxf "\n",
- PTR2UV(cx->blk_sub.cv));
- PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
- (long)cx->blk_sub.olddepth);
- PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
- (int)CxHASARGS(cx));
- PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
- PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%" UVxf "\n",
- PTR2UV(cx->blk_sub.retop));
- break;
+ PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_sub.cv));
+ PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
+ (long)cx->blk_sub.olddepth);
+ PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
+ (int)CxHASARGS(cx));
+ PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
+ PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_sub.retop));
+ break;
case CXt_EVAL:
- PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
- (long)CxOLD_IN_EVAL(cx));
- PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
- PL_op_name[CxOLD_OP_TYPE(cx)],
- PL_op_desc[CxOLD_OP_TYPE(cx)]);
- if (cx->blk_eval.old_namesv)
- PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
- SvPVX_const(cx->blk_eval.old_namesv));
- PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%" UVxf "\n",
- PTR2UV(cx->blk_eval.old_eval_root));
- PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%" UVxf "\n",
- PTR2UV(cx->blk_eval.retop));
- break;
+ PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
+ (long)CxOLD_IN_EVAL(cx));
+ PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
+ PL_op_name[CxOLD_OP_TYPE(cx)],
+ PL_op_desc[CxOLD_OP_TYPE(cx)]);
+ if (cx->blk_eval.old_namesv)
+ PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
+ SvPVX_const(cx->blk_eval.old_namesv));
+ PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_eval.old_eval_root));
+ PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_eval.retop));
+ break;
case CXt_LOOP_PLAIN:
case CXt_LOOP_LAZYIV:
case CXt_LOOP_LAZYSV:
case CXt_LOOP_LIST:
case CXt_LOOP_ARY:
- PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
- PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%" UVxf "\n",
- PTR2UV(cx->blk_loop.my_op));
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%" UVxf "\n",
+ PTR2UV(cx->blk_loop.my_op));
if (CxTYPE(cx) != CXt_LOOP_PLAIN) {
PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%" UVxf "\n",
PTR2UV(CxITERVAR(cx)));
PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%" UVxf "\n",
PTR2UV(cx->blk_loop.itersave));
- /* XXX: not accurate for LAZYSV/IV/LIST */
+ }
+ if (CxTYPE(cx) == CXt_LOOP_ARY) {
PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%" UVxf "\n",
PTR2UV(cx->blk_loop.state_u.ary.ary));
PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
(long)cx->blk_loop.state_u.ary.ix);
}
- break;
+ break;
case CXt_SUBST:
- PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
- (long)cx->sb_iters);
- PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
- (long)cx->sb_maxiters);
- PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
- (long)cx->sb_rflags);
- PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
- (long)CxONCE(cx));
- PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
- cx->sb_orig);
- PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%" UVxf "\n",
- PTR2UV(cx->sb_dstr));
- PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%" UVxf "\n",
- PTR2UV(cx->sb_targ));
- PerlIO_printf(Perl_debug_log, "SB_S = 0x%" UVxf "\n",
- PTR2UV(cx->sb_s));
- PerlIO_printf(Perl_debug_log, "SB_M = 0x%" UVxf "\n",
- PTR2UV(cx->sb_m));
- PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%" UVxf "\n",
- PTR2UV(cx->sb_strend));
- PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%" UVxf "\n",
- PTR2UV(cx->sb_rxres));
- break;
+ PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
+ (long)cx->sb_iters);
+ PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
+ (long)cx->sb_maxiters);
+ PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
+ (long)cx->sb_rflags);
+ PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
+ (long)CxONCE(cx));
+ PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
+ cx->sb_orig);
+ PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%" UVxf "\n",
+ PTR2UV(cx->sb_dstr));
+ PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%" UVxf "\n",
+ PTR2UV(cx->sb_targ));
+ PerlIO_printf(Perl_debug_log, "SB_S = 0x%" UVxf "\n",
+ PTR2UV(cx->sb_s));
+ PerlIO_printf(Perl_debug_log, "SB_M = 0x%" UVxf "\n",
+ PTR2UV(cx->sb_m));
+ PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%" UVxf "\n",
+ PTR2UV(cx->sb_strend));
+ PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%" UVxf "\n",
+ PTR2UV(cx->sb_rxres));
+ break;
}
#else
PERL_UNUSED_CONTEXT;
}
/*
+=for apidoc_section $callback
+=for apidoc mortal_destructor_sv
+
+This function arranges for either a Perl code reference, or a C function
+reference to be called at the B<end of the current statement>.
+
+The C<coderef> argument determines the type of function that will be
+called. If it is C<SvROK()> it is assumed to be a reference to a CV and
+will arrange for the coderef to be called. If it is not SvROK() then it
+is assumed to be a C<SvIV()> which is C<SvIOK()> whose value is a pointer
+to a C function of type C<DESTRUCTORFUNC_t> created using C<PTR2INT()>.
+Either way the C<args> parameter will be provided to the callback as a
+parameter, although the rules for doing so differ between the Perl and
+C mode. Normally this function is only used directly for the Perl case
+and the wrapper C<mortal_destructor_x()> is used for the C function case.
+
+When operating in Perl callback mode the C<args> parameter may be NULL
+in which case the code reference is called with no arguments, otherwise
+if it is an AV (SvTYPE(args) == SVt_PVAV) then the contents of the AV
+will be used as the arguments to the code reference, and if it is any
+other type then the C<args> SV will be provided as a single argument to
+the code reference.
+
+When operating in a C callback mode the C<args> parameter will be passed
+directly to the C function as a C<void *> pointer. No additional
+processing of the argument will be peformed, and it is the callers
+responsibility to free the C<args> parameter if necessary.
+
+Be aware that there is a signficant difference in timing between the
+I<end of the current statement> and the I<end of the current pseudo
+block>. If you are looking for a mechanism to trigger a function at the
+end of the B<current pseudo block> you should look at
+C<SAVEDESTRUCTORX()> instead of this function.
+
+=for apidoc mortal_svfunc_x
+
+This function arranges for a C function reference to be called at the
+B<end of the current statement> with the arguments provided. It is a
+wrapper around C<mortal_destructor_sv()> which ensures that the latter
+function is called appropriately.
+
+Be aware that there is a signficant difference in timing between the
+I<end of the current statement> and the I<end of the current pseudo
+block>. If you are looking for a mechanism to trigger a function at the
+end of the B<current pseudo block> you should look at
+C<SAVEDESTRUCTORX()> instead of this function.
+
+=for apidoc magic_freedestruct
+
+This function is called via magic to implement the
+C<mortal_destructor_sv()> and C<mortal_destructor_x()> functions. It
+should not be called directly and has no user servicable parts.
+
+=cut
+*/
+
+void
+Perl_mortal_destructor_sv(pTHX_ SV *coderef, SV *args) {
+ PERL_ARGS_ASSERT_MORTAL_DESTRUCTOR_SV;
+ assert(
+ (SvROK(coderef) && SvTYPE(SvRV(coderef)) == SVt_PVCV) /* perl coderef */
+ ||
+ (SvIOK(coderef) && !SvROK(coderef)) /* C function ref */
+ );
+ SV *variable = newSV_type_mortal(SVt_IV);
+ (void)sv_magicext(variable, coderef, PERL_MAGIC_destruct,
+ &PL_vtbl_destruct, (char *)args, args ? HEf_SVKEY : 0);
+}
+
+
+void
+Perl_mortal_svfunc_x(pTHX_ SVFUNC_t f, SV *sv) {
+ PERL_ARGS_ASSERT_MORTAL_SVFUNC_X;
+ SV *sviv = newSViv(PTR2IV(f));
+ mortal_destructor_sv(sviv,sv);
+}
+
+
+int
+Perl_magic_freedestruct(pTHX_ SV* sv, MAGIC* mg) {
+ PERL_ARGS_ASSERT_MAGIC_FREEDESTRUCT;
+ dSP;
+ union {
+ SV *sv;
+ AV *av;
+ char *pv;
+ } args_any;
+ SV *coderef;
+
+ IV nargs = 0;
+ if (PL_phase == PERL_PHASE_DESTRUCT) {
+ Perl_warn(aTHX_ "Can't call destructor for 0x%p in global destruction\n", sv);
+ return 1;
+ }
+
+ args_any.pv = mg->mg_ptr;
+ coderef = mg->mg_obj;
+
+ /* Deal with C function destructor */
+ if (SvTYPE(coderef) == SVt_IV && !SvROK(coderef)) {
+ SVFUNC_t f = INT2PTR(SVFUNC_t, SvIV(coderef));
+ (f)(aTHX_ args_any.sv);
+ return 0;
+ }
+
+ if (args_any.sv) {
+ if (SvTYPE(args_any.sv) == SVt_PVAV) {
+ nargs = av_len(args_any.av) + 1;
+ } else {
+ nargs = 1;
+ }
+ }
+ PUSHSTACKi(PERLSI_MAGIC);
+ ENTER_with_name("call_freedestruct");
+ SAVETMPS;
+ EXTEND(SP, nargs);
+ PUSHMARK(SP);
+ if (args_any.sv) {
+ if (SvTYPE(args_any.sv) == SVt_PVAV) {
+ IV n;
+ for (n = 0 ; n < nargs ; n++ ) {
+ SV **argp = av_fetch(args_any.av, n, 0);
+ if (argp && *argp)
+ PUSHs(*argp);
+ }
+ } else {
+ PUSHs(args_any.sv);
+ }
+ }
+ PUTBACK;
+ (void)call_sv(coderef, G_VOID | G_EVAL | G_KEEPERR);
+ FREETMPS;
+ LEAVE_with_name("call_freedestruct");
+ POPSTACK;
+ return 0;
+}
+
+
+/*
* ex: set ts=8 sts=4 sw=4 et:
*/