SV**
Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
{
-#if defined(DEBUGGING) && !defined(USE_5005THREADS)
- static int growing = 0;
- if (growing++)
- abort();
-#endif
PL_stack_sp = sp;
#ifndef STRESS_REALLOC
av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
#else
av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1);
#endif
-#if defined(DEBUGGING) && !defined(USE_5005THREADS)
- growing--;
-#endif
return PL_stack_sp;
}
void
Perl_savestack_grow(pTHX)
{
- PL_savestack_max = GROW(PL_savestack_max) + 4;
+ PL_savestack_max = GROW(PL_savestack_max) + 4;
Renew(PL_savestack, PL_savestack_max, ANY);
}
while (PL_tmps_ix > myfloor) { /* clean up after last statement */
SV* sv = PL_tmps_stack[PL_tmps_ix];
PL_tmps_stack[PL_tmps_ix--] = Nullsv;
- if (sv) {
+ if (sv && sv != &PL_sv_undef) {
SvTEMP_off(sv);
SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
}
mg->mg_obj = osv;
}
SvFLAGS(osv) |= (SvFLAGS(osv) &
- (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
+ (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
PL_tainted = oldtainted;
}
SvMAGIC(sv) = SvMAGIC(osv);
SSPUSHINT(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. */
+void
+Perl_save_shared_pvref(pTHX_ char **str)
+{
+ SSCHECK(3);
+ SSPUSHPTR(str);
+ SSPUSHPTR(*str);
+ SSPUSHINT(SAVEt_SHARED_PVREF);
+}
+
void
Perl_save_gp(pTHX_ GV *gv, I32 empty)
{
Perl_save_alloc(pTHX_ I32 size, I32 pad)
{
register I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
- - (char*)PL_savestack);
+ - (char*)PL_savestack);
register I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
/* SSCHECK may not be good enough */
while (PL_savestack_ix + elems + 2 > PL_savestack_max)
- savestack_grow();
+ savestack_grow();
PL_savestack_ix += elems;
SSPUSHINT(elems);
SvSETMAGIC(sv);
PL_localizing = 0;
break;
- case SAVEt_SV: /* scalar reference */
+ case SAVEt_SV: /* scalar reference */
value = (SV*)SSPOPPTR;
gv = (GV*)SSPOPPTR;
ptr = &GvSV(gv);
SvREFCNT_dec(gv);
goto restore_sv;
- case SAVEt_GENERIC_PVREF: /* generic pv */
+ case SAVEt_GENERIC_PVREF: /* generic pv */
str = (char*)SSPOPPTR;
ptr = SSPOPPTR;
if (*(char**)ptr != str) {
*(char**)ptr = str;
}
break;
- case SAVEt_GENERIC_SVREF: /* generic sv */
+ case SAVEt_SHARED_PVREF: /* shared pv */
+ str = (char*)SSPOPPTR;
+ ptr = SSPOPPTR;
+ if (*(char**)ptr != str) {
+ PerlMemShared_free(*(char**)ptr);
+ *(char**)ptr = str;
+ }
+ break;
+ case SAVEt_GENERIC_SVREF: /* generic sv */
value = (SV*)SSPOPPTR;
ptr = SSPOPPTR;
sv = *(SV**)ptr;
SvREFCNT_dec(sv);
SvREFCNT_dec(value);
break;
- case SAVEt_SVREF: /* scalar reference */
+ case SAVEt_SVREF: /* scalar reference */
value = (SV*)SSPOPPTR;
ptr = SSPOPPTR;
restore_sv:
sv = *(SV**)ptr;
DEBUG_S(PerlIO_printf(Perl_debug_log,
"restore svref: %p %p:%s -> %p:%s\n",
- ptr, sv, SvPEEK(sv), value, SvPEEK(value)));
- if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
- SvTYPE(sv) != SVt_PVGV)
- {
+ ptr, sv, SvPEEK(sv), value, SvPEEK(value)));
+ if (SvTYPE(sv) == SVt_PVMG && SvMAGIC(sv)) {
(void)SvUPGRADE(value, SvTYPE(sv));
SvMAGIC(value) = SvMAGIC(sv);
SvFLAGS(value) |= SvMAGICAL(sv);
* croaking that might ensue when the SvSETMAGIC() below is
* called, or to avoid two different SVs pointing at the same
* SvMAGIC()). This needs a total rethink. --GSAR */
- else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
- SvTYPE(value) != SVt_PVGV)
- {
+ else if (SvTYPE(value) == SVt_PVMG && SvMAGIC(value)) {
SvFLAGS(value) |= (SvFLAGS(value) &
- (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
+ (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
SvMAGICAL_off(value);
/* XXX this is a leak when we get here because the
* mg_get() in save_scalar_at() croaked */
SvMAGIC(value) = 0;
}
- SvREFCNT_dec(sv);
+ SvREFCNT_dec(sv);
*(SV**)ptr = value;
PL_localizing = 2;
SvSETMAGIC(value);
PL_localizing = 0;
SvREFCNT_dec(value);
- break;
- case SAVEt_AV: /* array reference */
+ break;
+ case SAVEt_AV: /* array reference */
av = (AV*)SSPOPPTR;
gv = (GV*)SSPOPPTR;
if (GvAV(gv)) {
SvMAGIC(goner) = 0;
SvREFCNT_dec(goner);
}
- GvAV(gv) = av;
+ GvAV(gv) = av;
if (SvMAGICAL(av)) {
PL_localizing = 2;
SvSETMAGIC((SV*)av);
PL_localizing = 0;
}
- break;
- case SAVEt_HV: /* hash reference */
+ break;
+ case SAVEt_HV: /* hash reference */
hv = (HV*)SSPOPPTR;
gv = (GV*)SSPOPPTR;
if (GvHV(gv)) {
SvMAGIC(goner) = 0;
SvREFCNT_dec(goner);
}
- GvHV(gv) = hv;
+ GvHV(gv) = hv;
if (SvMAGICAL(hv)) {
PL_localizing = 2;
SvSETMAGIC((SV*)hv);
PL_localizing = 0;
}
- break;
+ break;
case SAVEt_INT: /* int reference */
ptr = SSPOPPTR;
*(int*)ptr = (int)SSPOPINT;
case SAVEt_GP: /* scalar reference */
ptr = SSPOPPTR;
gv = (GV*)SSPOPPTR;
- if (SvPVX(gv) && SvLEN(gv) > 0) {
- Safefree(SvPVX(gv));
- }
- SvPVX(gv) = (char *)SSPOPPTR;
- SvCUR(gv) = (STRLEN)SSPOPIV;
- SvLEN(gv) = (STRLEN)SSPOPIV;
- gp_free(gv);
- GvGP(gv) = (GP*)ptr;
+ if (SvPVX(gv) && SvLEN(gv) > 0) {
+ Safefree(SvPVX(gv));
+ }
+ SvPVX(gv) = (char *)SSPOPPTR;
+ SvCUR(gv) = (STRLEN)SSPOPIV;
+ SvLEN(gv) = (STRLEN)SSPOPIV;
+ gp_free(gv);
+ GvGP(gv) = (GP*)ptr;
if (GvCVu(gv))
PL_sub_generation++; /* putting a method back into circulation */
SvREFCNT_dec(gv);
- break;
+ break;
case SAVEt_FREESV:
ptr = SSPOPPTR;
SvREFCNT_dec((SV*)ptr);
sv = *(SV**)ptr;
/* Can clear pad variable in place? */
if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
+ /*
+ * if a my variable that was made readonly is going out of
+ * scope, we want to remove the readonlyness so that it can
+ * go out of scope quietly
+ */
+ if (SvPADMY(sv) && !SvFAKE(sv))
+ SvREADONLY_off(sv);
+
if (SvTHINKFIRST(sv))
sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
if (SvMAGICAL(sv))
ptr = SSPOPPTR;
(void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
SvREFCNT_dec(hv);
- Safefree(ptr);
+ Safefree(ptr);
break;
case SAVEt_DESTRUCTOR:
ptr = SSPOPPTR;
break;
case SAVEt_DESTRUCTOR_X:
ptr = SSPOPPTR;
- (*SSPOPDXPTR)(aTHXo_ ptr);
+ (*SSPOPDXPTR)(aTHX_ ptr);
break;
case SAVEt_REGCONTEXT:
case SAVEt_ALLOC:
https://perl5.git.perl.org / perl5.git / blobdiff