#define __PACKAGE__ "Variable::Magic"
-#define R(S) fprintf(stderr, "R(" #S ") = %d\n", SvREFCNT(S))
+#ifndef VMG_PERL_PATCHLEVEL
+# ifdef PERL_PATCHNUM
+# define VMG_PERL_PATCHLEVEL PERL_PATCHNUM
+# else
+# define VMG_PERL_PATCHLEVEL 0
+# endif
+#endif
-#define PERL_VERSION_GE(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
+#define VMG_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
-#define PERL_VERSION_LE(R, V, S) (PERL_REVISION < (R) || (PERL_REVISION == (R) && (PERL_VERSION < (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION <= (S))))))
+#define VMG_HAS_PERL_BRANCH(R, V, S) (PERL_REVISION == (R) && PERL_VERSION == (V) && PERL_SUBVERSION >= (S))
-#define PERL_API_VERSION_GE(R, V, S) (PERL_API_REVISION > (R) || (PERL_API_REVISION == (R) && (PERL_API_VERSION > (V) || (PERL_API_VERSION == (V) && (PERL_API_SUBVERSION >= (S))))))
+#define VMG_HAS_PERL_MAINT(R, V, S, P) (PERL_REVISION == (R) && PERL_VERSION == (V) && (VMG_PERL_PATCHLEVEL >= (P) || (!VMG_PERL_PATCHLEVEL && PERL_SUBVERSION >= (S))))
-#define PERL_API_VERSION_LE(R, V, S) (PERL_API_REVISION < (R) || (PERL_API_REVISION == (R) && (PERL_API_VERSION < (V) || (PERL_API_VERSION == (V) && (PERL_API_SUBVERSION <= (S))))))
+/* --- Threads and multiplicity -------------------------------------------- */
-#ifndef VMG_PERL_PATCHLEVEL
-# ifdef PERL_PATCHNUM
-# define VMG_PERL_PATCHLEVEL PERL_PATCHNUM
+#ifndef NOOP
+# define NOOP
+#endif
+
+#ifndef dNOOP
+# define dNOOP
+#endif
+
+#ifndef VMG_MULTIPLICITY
+# if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
+# define VMG_MULTIPLICITY 1
# else
-# define VMG_PERL_PATCHLEVEL 0
+# define VMG_MULTIPLICITY 0
# endif
#endif
+#if VMG_MULTIPLICITY && !defined(tTHX)
+# define tTHX PerlInterpreter*
+#endif
+
+#if VMG_MULTIPLICITY && defined(USE_ITHREADS) && defined(dMY_CXT) && defined(MY_CXT) && defined(START_MY_CXT) && defined(MY_CXT_INIT) && (defined(MY_CXT_CLONE) || defined(dMY_CXT_SV))
+# define VMG_THREADSAFE 1
+# ifndef MY_CXT_CLONE
+# define MY_CXT_CLONE \
+ dMY_CXT_SV; \
+ my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \
+ Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \
+ sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
+# endif
+#else
+# define VMG_THREADSAFE 0
+# undef dMY_CXT
+# define dMY_CXT dNOOP
+# undef MY_CXT
+# define MY_CXT vmg_globaldata
+# undef START_MY_CXT
+# define START_MY_CXT STATIC my_cxt_t MY_CXT;
+# undef MY_CXT_INIT
+# define MY_CXT_INIT NOOP
+# undef MY_CXT_CLONE
+# define MY_CXT_CLONE NOOP
+#endif
+
+#if VMG_THREADSAFE
+
+STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
+#define vmg_clone(P, O) vmg_clone(aTHX_ (P), (O))
+ CLONE_PARAMS param;
+ param.stashes = NULL; /* don't need it unless sv is a PVHV */
+ param.flags = 0;
+ param.proto_perl = owner;
+ return sv_dup(sv, ¶m);
+}
+
+#endif /* VMG_THREADSAFE */
/* --- Compatibility ------------------------------------------------------- */
# define Newx(v, n, c) New(0, v, n, c)
#endif
+#ifndef NewOp
+# define NewOp(m, var, c, type) Newz(m, var, c, type)
+#endif
+
#ifndef SvMAGIC_set
# define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
#endif
-#ifndef dMY_CXT
-# define MY_CXT vmg_globaldata
-# define dMY_CXT
-# define START_MY_CXT STATIC my_cxt_t MY_CXT;
-# define MY_CXT_INIT
+#ifndef mPUSHi
+# define mPUSHi(I) PUSHs(sv_2mortal(newSViv(I)))
#endif
#ifndef PERL_MAGIC_ext
# define PERL_MAGIC_ext '~'
#endif
+#ifndef PERL_MAGIC_tied
+# define PERL_MAGIC_tied 'P'
+#endif
+
#ifndef MGf_COPY
# define MGf_COPY 0
#endif
# define MGf_LOCAL 0
#endif
-#if PERL_API_VERSION_GE(5, 10, 0)
+#ifndef IN_PERL_COMPILETIME
+# define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling)
+#endif
+
+#if VMG_HAS_PERL(5, 10, 0) || defined(PL_parser)
+# ifndef PL_error_count
+# define PL_error_count PL_parser->error_count
+# endif
+#else
+# ifndef PL_error_count
+# define PL_error_count PL_Ierror_count
+# endif
+#endif
+
+/* uvar magic and Hash::Util::FieldHash were commited with 28419 */
+#if VMG_HAS_PERL_MAINT(5, 9, 4, 28419) || VMG_HAS_PERL(5, 10, 0)
# define VMG_UVAR 1
#else
# define VMG_UVAR 0
#endif
-#if (VMG_PERL_PATCHLEVEL >= 25854) || (!VMG_PERL_PATCHLEVEL && PERL_VERSION_GE(5, 9, 3))
-# define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
+/* Applied to dev-5.9 as 25854, integrated to maint-5.8 as 28160 */
+#ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN
+# if VMG_HAS_PERL_MAINT(5, 8, 9, 28160) || VMG_HAS_PERL_MAINT(5, 9, 3, 25854) || VMG_HAS_PERL(5, 10, 0)
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
+# else
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
+# endif
+#endif
+
+/* Applied to dev-5.11 as 34908 */
+#if VMG_HAS_PERL_MAINT(5, 11, 0, 34908)
+# define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 1
#else
-# define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
+# define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 0
#endif
-/* since 5.9.5 - see #43357 */
-#if (VMG_PERL_PATCHLEVEL >= 31473) || (!VMG_PERL_PATCHLEVEL && PERL_VERSION_GE(5, 9, 5))
+/* Applied to dev-5.9 as 31473 (see #43357), integrated to maint-5.8 as 32542 */
+#if VMG_HAS_PERL_MAINT(5, 8, 9, 32542) || VMG_HAS_PERL_MAINT(5, 9, 5, 31473) || VMG_HAS_PERL(5, 10, 0)
# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 1
#else
# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
#endif
-#if (VMG_PERL_PATCHLEVEL >= 32969) || (!VMG_PERL_PATCHLEVEL && PERL_VERSION_GE(5, 11, 0))
+#if VMG_HAS_PERL_MAINT(5, 11, 0, 32969)
# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1
#else
# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0
#if VMG_UVAR
-/* Bug-free mg_magical - see http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-01/msg00036.html, but specialized to our needs. */
+/* Bug-free mg_magical - see http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-01/msg00036.html - but specialized to our needs. */
STATIC void vmg_sv_magicuvar(pTHX_ SV *sv, const char *uf, I32 len) {
#define vmg_sv_magicuvar(S, U, L) vmg_sv_magicuvar(aTHX_ (S), (U), (L))
const MAGIC* mg;
sv_magic(sv, NULL, PERL_MAGIC_uvar, uf, len);
/* uvar magic has set and get magic, hence this has set SVs_GMG and SVs_SMG. */
- PERL_UNUSED_CONTEXT;
if ((mg = SvMAGIC(sv))) {
SvRMAGICAL_off(sv);
do {
const MGVTBL* const vtbl = mg->mg_virtual;
if (vtbl) {
-/*
- if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
- SvGMAGICAL_on(sv);
- if (vtbl->svt_set)
- SvSMAGICAL_on(sv);
-*/
if (vtbl->svt_clear) {
SvRMAGICAL_on(sv);
break;
}
}
} while ((mg = mg->mg_moremagic));
-/*
- if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)))
- SvRMAGICAL_on(sv);
-*/
}
}
#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
-typedef struct {
- HV *wizz;
- U16 count;
-} my_cxt_t;
+typedef HV * my_cxt_t;
START_MY_CXT
do {
sig = SIG_NBR * Drand01() + SIG_MIN;
- } while (hv_exists(MY_CXT.wizz, buf, sprintf(buf, "%u", sig)));
+ } while (hv_exists(MY_CXT, buf, sprintf(buf, "%u", sig)));
return sig;
}
#if VMG_UVAR
SV *cb_fetch, *cb_store, *cb_exists, *cb_delete;
#endif /* VMG_UVAR */
+#if VMG_MULTIPLICITY
+ tTHX owner;
+#endif /* VMG_MULTIPLICITY */
} MGWIZ;
#define MGWIZ2SV(W) (newSVuv(PTR2UV(W)))
STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, AV *args) {
#define vmg_data_new(C, S, A) vmg_data_new(aTHX_ (C), (S), (A))
SV *nsv;
+ I32 i, alen = (args == NULL) ? 0 : av_len(args);
dSP;
- int count;
ENTER;
SAVETMPS;
PUSHMARK(SP);
- XPUSHs(sv_2mortal(newRV_inc(sv)));
- if (args != NULL) {
- I32 i, alen = av_len(args);
- for (i = 0; i < alen; ++i) { XPUSHs(*av_fetch(args, i, 0)); }
- }
+ EXTEND(SP, alen + 1);
+ PUSHs(sv_2mortal(newRV_inc(sv)));
+ for (i = 0; i < alen; ++i)
+ PUSHs(*av_fetch(args, i, 0));
PUTBACK;
- count = call_sv(ctor, G_SCALAR);
+ call_sv(ctor, G_SCALAR);
SPAGAIN;
-
- if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
nsv = POPs;
-#if PERL_VERSION_LE(5, 8, 2)
- nsv = sv_newref(nsv); /* Workaround some bug in SvREFCNT_inc() */
-#else
+#if VMG_HAS_PERL(5, 8, 3)
SvREFCNT_inc(nsv); /* Or it will be destroyed in FREETMPS */
+#else
+ nsv = sv_newref(nsv); /* Workaround some bug in SvREFCNT_inc() */
#endif
-
PUTBACK;
FREETMPS;
data = (w->cb_data) ? vmg_data_new(w->cb_data, sv, args) : NULL;
mg = sv_magicext(sv, data, PERL_MAGIC_ext, w->vtbl, (const char *) wiz, HEf_SVKEY);
mg->mg_private = w->sig;
- mg->mg_flags = mg->mg_flags
#if MGf_COPY
- | MGf_COPY
+ if (w->cb_copy)
+ mg->mg_flags |= MGf_COPY;
#endif /* MGf_COPY */
-#if MGf_DUP
- | MGf_DUP
+#if 0 /* MGf_DUP */
+ if (w->cb_dup)
+ mg->mg_flags |= MGf_DUP;
#endif /* MGf_DUP */
#if MGf_LOCAL
- | MGf_LOCAL
+ if (w->cb_local)
+ mg->mg_flags |= MGf_LOCAL;
#endif /* MGf_LOCAL */
- ;
+
+ if (SvTYPE(sv) < SVt_PVHV)
+ goto done;
#if VMG_UVAR
- if (w->uvar && SvTYPE(sv) >= SVt_PVHV) {
+ if (w->uvar) {
MAGIC *prevmagic;
int add_uvar = 1;
struct ufuncs uf[2];
uf[1] = *olduf;
vmg_uvar_del(sv, prevmagic, mg, moremagic);
}
- }
+ } else if (w->cb_get)
+ SvGMAGICAL_off(sv);
if (add_uvar) {
vmg_sv_magicuvar(sv, (const char *) &uf, sizeof(uf));
}
}
+#else
+ if (w->cb_get)
+ SvGMAGICAL_off(sv);
#endif /* VMG_UVAR */
+done:
return 1;
}
/* ... svt callbacks ....................................................... */
-STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data, unsigned int args, ...) {
+#define VMG_CB_CALL_ARGS_MASK 15
+#define VMG_CB_CALL_EVAL 16
+
+STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data, unsigned int flags, ...){
va_list ap;
SV *svr;
int ret;
unsigned int i;
+ unsigned int args = flags & VMG_CB_CALL_ARGS_MASK;
+ unsigned int eval = flags & VMG_CB_CALL_EVAL ? G_EVAL : 0;
dSP;
- int count;
ENTER;
SAVETMPS;
EXTEND(SP, args + 2);
PUSHs(sv_2mortal(newRV_inc(sv)));
PUSHs(data ? data : &PL_sv_undef);
- va_start(ap, args);
+ va_start(ap, flags);
for (i = 0; i < args; ++i) {
SV *sva = va_arg(ap, SV *);
PUSHs(sva ? sva : &PL_sv_undef);
va_end(ap);
PUTBACK;
- count = call_sv(cb, G_SCALAR);
+ call_sv(cb, G_SCALAR | eval);
SPAGAIN;
-
- if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
+ if (eval && IN_PERL_COMPILETIME && SvTRUE(ERRSV))
+ ++PL_error_count;
svr = POPs;
ret = SvOK(svr) ? SvIV(svr) : 0;
-
PUTBACK;
FREETMPS;
}
#define vmg_cb_call1(I, S, D) vmg_cb_call(aTHX_ (I), (S), (D), 0)
+#define vmg_cb_call1e(I, S, D) vmg_cb_call(aTHX_ (I), (S), (D), VMG_CB_CALL_EVAL)
#define vmg_cb_call2(I, S, D, S2) vmg_cb_call(aTHX_ (I), (S), (D), 1, (S2))
#define vmg_cb_call3(I, S, D, S2, S3) vmg_cb_call(aTHX_ (I), (S), (D), 2, (S2), (S3))
STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
SV *svr;
- I32 len;
+ I32 len, has_array;
U32 ret;
dSP;
int count;
+ has_array = SvTYPE(sv) == SVt_PVAV;
+
ENTER;
SAVETMPS;
EXTEND(SP, 3);
PUSHs(sv_2mortal(newRV_inc(sv)));
PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
- if (SvTYPE(sv) == SVt_PVAV) {
+ if (has_array) {
len = av_len((AV *) sv) + 1;
mPUSHi(len);
} else {
- len = 1;
+ len = 0;
PUSHs(&PL_sv_undef);
}
PUTBACK;
count = call_sv(SV2MGWIZ(mg->mg_ptr)->cb_len, G_SCALAR);
SPAGAIN;
-
- if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
svr = POPs;
ret = SvOK(svr) ? SvUV(svr) : len;
-
PUTBACK;
FREETMPS;
LEAVE;
- return ret - 1;
+ return has_array ? ret - 1 : ret;
}
STATIC int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) {
}
STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
+ SV *wiz = (SV *) mg->mg_ptr;
+ int ret = 0;
+
+ /* This may happen in global destruction */
+ if (SvTYPE(wiz) == SVTYPEMASK)
+ return 0;
+
/* So that it can survive tmp cleanup in vmg_cb_call */
SvREFCNT_inc(sv);
+
+#if !VMG_HAS_PERL_MAINT(5, 11, 0, 32686)
+ /* The previous magic tokens were freed but the magic chain wasn't updated, so
+ * if you access the sv from the callback the old deleted magics will trigger
+ * and cause memory misreads. Change 32686 solved it that way : */
+ SvMAGIC_set(sv, mg);
+#endif
+
/* Perl_mg_free will get rid of the magic and decrement mg->mg_obj and
* mg->mg_ptr reference count */
- return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_free, sv, mg->mg_obj);
+ ret = vmg_cb_call1e(SV2MGWIZ(wiz)->cb_free, sv, mg->mg_obj);
+
+ /* Calling SvREFCNT_dec() will trigger destructors in an infinite loop, so
+ * we have to rely on SvREFCNT() being a lvalue. Heck, even the core does it */
+ --SvREFCNT(sv);
+
+ return ret;
}
#if MGf_COPY
STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key,
-# if (VMG_PERL_PATCHLEVEL >= 33256) || (!VMG_PERL_PATCHLEVEL && PERL_API_VERSION_GE(5, 11, 0))
+# if VMG_HAS_PERL_MAINT(5, 11, 0, 33256)
I32 keylen
# else
int keylen
#endif /* MGf_LOCAL */
#if VMG_UVAR
+STATIC OP *vmg_pp_resetuvar(pTHX) {
+ SvRMAGICAL_on(cSVOP_sv);
+ return NORMAL;
+}
+
STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
struct ufuncs *uf;
- MAGIC *mg;
- SV *key = NULL;
+ MAGIC *mg, *umg;
+ SV *key = NULL, *newkey = NULL;
+ int tied = 0;
- mg = mg_find(sv, PERL_MAGIC_uvar);
- /* mg can't be NULL or we wouldn't be there. */
- key = mg->mg_obj;
- uf = (struct ufuncs *) mg->mg_ptr;
+ umg = mg_find(sv, PERL_MAGIC_uvar);
+ /* umg can't be NULL or we wouldn't be there. */
+ key = umg->mg_obj;
+ uf = (struct ufuncs *) umg->mg_ptr;
if (uf[1].uf_val != NULL) { uf[1].uf_val(aTHX_ action, sv); }
if (uf[1].uf_set != NULL) { uf[1].uf_set(aTHX_ action, sv); }
action &= HV_FETCH_ISSTORE | HV_FETCH_ISEXISTS | HV_FETCH_LVALUE | HV_DELETE;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
MGWIZ *w;
- if ((mg->mg_type != PERL_MAGIC_ext)
- || (mg->mg_private < SIG_MIN)
- || (mg->mg_private > SIG_MAX)) { continue; }
+ switch (mg->mg_type) {
+ case PERL_MAGIC_ext:
+ break;
+ case PERL_MAGIC_tied:
+ ++tied;
+ continue;
+ default:
+ continue;
+ }
+ if (mg->mg_private < SIG_MIN || mg->mg_private > SIG_MAX)
+ continue;
w = SV2MGWIZ(mg->mg_ptr);
- if (!w->uvar) { continue; }
+ switch (w->uvar) {
+ case 0:
+ continue;
+ case 2:
+ if (!newkey)
+ newkey = key = umg->mg_obj = sv_2mortal(newSVsv(umg->mg_obj));
+ }
switch (action) {
case 0:
if (w->cb_fetch) { vmg_cb_call2(w->cb_fetch, sv, mg->mg_obj, key); }
}
}
+ if (SvRMAGICAL(sv) && !tied) {
+ /* Temporarily hide the RMAGICAL flag of the hash so it isn't wrongly
+ * mistaken for a tied hash by the rest of hv_common. It will be reset by
+ * the op_ppaddr of a new fake op injected between the current and the next
+ * one. */
+ OP *o = PL_op;
+ if (!o->op_next || o->op_next->op_ppaddr != vmg_pp_resetuvar) {
+ SVOP *svop;
+ NewOp(1101, svop, 1, SVOP);
+ svop->op_type = OP_STUB;
+ svop->op_ppaddr = vmg_pp_resetuvar;
+ svop->op_next = o->op_next;
+ svop->op_flags = 0;
+ svop->op_sv = sv;
+ o->op_next = (OP *) svop;
+ }
+ SvRMAGICAL_off(sv);
+ }
+
return 0;
}
#endif /* VMG_UVAR */
STATIC int vmg_wizard_free(pTHX_ SV *wiz, MAGIC *mg) {
char buf[8];
MGWIZ *w;
- dMY_CXT;
- w = SV2MGWIZ(wiz);
+ if (PL_dirty) /* During global destruction, the context is already freed */
+ return 0;
- SvREFCNT_inc(wiz); /* Fake survival - it's gonna be deleted anyway */
-#if PERL_API_VERSION_GE(5, 9, 5)
- SvREFCNT_inc(wiz); /* One more push */
-#endif
- if (hv_delete(MY_CXT.wizz, buf, sprintf(buf, "%u", w->sig), 0)) {
- --MY_CXT.count;
+ w = SV2MGWIZ(wiz);
+#if VMG_MULTIPLICITY
+ if (w->owner != aTHX)
+ return 0;
+ w->owner = NULL;
+#endif /* VMG_MULTIPLICITY */
+
+ {
+ dMY_CXT;
+ if (hv_delete(MY_CXT, buf, sprintf(buf, "%u", w->sig), 0) != wiz)
+ return 0;
}
+ SvFLAGS(wiz) |= SVf_BREAK;
+ FREETMPS;
if (w->cb_data != NULL) { SvREFCNT_dec(SvRV(w->cb_data)); }
if (w->cb_get != NULL) { SvREFCNT_dec(SvRV(w->cb_get)); }
#if MGf_COPY
if (w->cb_copy != NULL) { SvREFCNT_dec(SvRV(w->cb_copy)); }
#endif /* MGf_COPY */
-#if MGf_DUP
+#if 0 /* MGf_DUP */
if (w->cb_dup != NULL) { SvREFCNT_dec(SvRV(w->cb_dup)); }
#endif /* MGf_DUP */
#if MGf_LOCAL
if (w->cb_exists != NULL) { SvREFCNT_dec(SvRV(w->cb_exists)); }
if (w->cb_delete != NULL) { SvREFCNT_dec(SvRV(w->cb_delete)); }
#endif /* VMG_UVAR */
+
Safefree(w->vtbl);
Safefree(w);
};
STATIC const char vmg_invalid_wiz[] = "Invalid wizard object";
-STATIC const char vmg_invalid_sv[] = "Invalid variable";
STATIC const char vmg_invalid_sig[] = "Invalid numeric signature";
STATIC const char vmg_wrongargnum[] = "Wrong number of arguments";
STATIC const char vmg_toomanysigs[] = "Too many magic signatures used";
return sig;
}
+STATIC U16 vmg_wizard_sig(pTHX_ SV *wiz) {
+#define vmg_wizard_sig(W) vmg_wizard_sig(aTHX_ (W))
+ char buf[8];
+ U16 sig;
+
+ if (SvROK(wiz)) {
+ sig = SV2MGWIZ(SvRV(wiz))->sig;
+ } else if (SvOK(wiz)) {
+ sig = vmg_sv2sig(wiz);
+ } else {
+ croak(vmg_invalid_wiz);
+ }
+
+ {
+ dMY_CXT;
+ if (!hv_fetch(MY_CXT, buf, sprintf(buf, "%u", sig), 0))
+ sig = 0;
+ }
+ return sig;
+}
+
+STATIC SV *vmg_wizard_wiz(pTHX_ SV *wiz) {
+#define vmg_wizard_wiz(W) vmg_wizard_wiz(aTHX_ (W))
+ char buf[8];
+ SV **old;
+ U16 sig;
+
+ if (SvROK(wiz)) {
+ wiz = SvRV(wiz);
+#if VMG_MULTIPLICITY
+ if (SV2MGWIZ(wiz)->owner == aTHX)
+ return wiz;
+#endif /* VMG_MULTIPLICITY */
+ sig = SV2MGWIZ(wiz)->sig;
+ } else if (SvOK(wiz)) {
+ sig = vmg_sv2sig(wiz);
+ } else {
+ croak(vmg_invalid_wiz);
+ }
+
+ {
+ dMY_CXT;
+ return (old = hv_fetch(MY_CXT, buf, sprintf(buf, "%u", sig), 0))
+ ? *old : NULL;
+ }
+}
+
#define VMG_SET_CB(S, N) \
cb = (S); \
w->cb_ ## N = (SvOK(cb) && SvROK(cb)) ? newRV_inc(SvRV(cb)) : NULL;
w->cb_ ## N = NULL; \
}
+#if VMG_THREADSAFE
+
+#define VMG_CLONE_CB(N) \
+ z->cb_ ## N = (w->cb_ ## N) ? newRV_inc(vmg_clone(SvRV(w->cb_ ## N), \
+ w->owner)) \
+ : NULL;
+
+STATIC MGWIZ *vmg_wizard_clone(pTHX_ const MGWIZ *w) {
+#define vmg_wizard_clone(W) vmg_wizard_clone(aTHX_ (W))
+ MGVTBL *t;
+ MGWIZ *z;
+
+ Newx(t, 1, MGVTBL);
+ Copy(w->vtbl, t, 1, MGVTBL);
+
+ Newx(z, 1, MGWIZ);
+ VMG_CLONE_CB(data);
+ VMG_CLONE_CB(get);
+ VMG_CLONE_CB(set);
+ VMG_CLONE_CB(len);
+ VMG_CLONE_CB(clear);
+ VMG_CLONE_CB(free);
+#if MGf_COPY
+ VMG_CLONE_CB(copy);
+#endif /* MGf_COPY */
+#if MGf_DUP
+ VMG_CLONE_CB(dup);
+#endif /* MGf_DUP */
+#if MGf_LOCAL
+ VMG_CLONE_CB(local);
+#endif /* MGf_LOCAL */
+#if VMG_UVAR
+ VMG_CLONE_CB(fetch);
+ VMG_CLONE_CB(store);
+ VMG_CLONE_CB(exists);
+ VMG_CLONE_CB(delete);
+#endif /* VMG_UVAR */
+ z->owner = aTHX;
+ z->vtbl = t;
+ z->sig = w->sig;
+ z->uvar = w->uvar;
+
+ return z;
+}
+
+#endif /* VMG_THREADSAFE */
/* --- XS ------------------------------------------------------------------ */
{
HV *stash;
MY_CXT_INIT;
- MY_CXT.wizz = newHV();
- MY_CXT.count = 0;
+ MY_CXT = newHV();
+ hv_iterinit(MY_CXT); /* Allocate iterator */
stash = gv_stashpv(__PACKAGE__, 1);
newCONSTSUB(stash, "SIG_MIN", newSVuv(SIG_MIN));
newCONSTSUB(stash, "SIG_MAX", newSVuv(SIG_MAX));
newCONSTSUB(stash, "VMG_UVAR", newSVuv(VMG_UVAR));
newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN",
newSVuv(VMG_COMPAT_ARRAY_PUSH_NOLEN));
+ newCONSTSUB(stash, "VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID",
+ newSVuv(VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID));
newCONSTSUB(stash, "VMG_COMPAT_ARRAY_UNDEF_CLEAR",
newSVuv(VMG_COMPAT_ARRAY_UNDEF_CLEAR));
newCONSTSUB(stash, "VMG_COMPAT_SCALAR_LENGTH_NOLEN",
newSVuv(VMG_COMPAT_SCALAR_LENGTH_NOLEN));
+ newCONSTSUB(stash, "VMG_PERL_PATCHLEVEL", newSVuv(VMG_PERL_PATCHLEVEL));
+ newCONSTSUB(stash, "VMG_THREADSAFE", newSVuv(VMG_THREADSAFE));
}
+void
+CLONE(...)
+PROTOTYPE: DISABLE
+PREINIT:
+ HV *hv;
+CODE:
+#if VMG_THREADSAFE
+ {
+ HE *key;
+ dMY_CXT;
+ hv = newHV();
+ hv_iterinit(hv); /* Allocate iterator */
+ hv_iterinit(MY_CXT);
+ while ((key = hv_iternext(MY_CXT))) {
+ STRLEN len;
+ char *sig = HePV(key, len);
+ SV *sv;
+ MAGIC *mg;
+ sv = MGWIZ2SV(vmg_wizard_clone(SV2MGWIZ(HeVAL(key))));
+ mg = sv_magicext(sv, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, 0);
+ mg->mg_private = SIG_WIZ;
+ SvREADONLY_on(sv);
+ hv_store(hv, sig, len, sv, HeHASH(key));
+ }
+ }
+ {
+ MY_CXT_CLONE;
+ MY_CXT = hv;
+ }
+#endif /* VMG_THREADSAFE */
+
SV *_wizard(...)
PROTOTYPE: DISABLE
PREINIT:
+ 1
#endif /* MGf_LOCAL */
#if VMG_UVAR
- + 4
+ + 5
#endif /* VMG_UVAR */
) { croak(vmg_wrongargnum); }
if (SvOK(svsig)) {
SV **old;
sig = vmg_sv2sig(svsig);
- if ((old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0))) {
+ if ((old = hv_fetch(MY_CXT, buf, sprintf(buf, "%u", sig), 0))) {
ST(0) = sv_2mortal(newRV_inc(*old));
XSRETURN(1);
}
} else {
- if (MY_CXT.count >= SIG_NBR) { croak(vmg_toomanysigs); }
+ if (HvKEYS(MY_CXT) >= SIG_NBR) { croak(vmg_toomanysigs); }
sig = vmg_gensig();
}
VMG_SET_CB(ST(i++), store);
VMG_SET_CB(ST(i++), exists);
VMG_SET_CB(ST(i++), delete);
+ cb = ST(i++);
+ if (w->cb_fetch || w->cb_store || w->cb_exists || w->cb_delete)
+ w->uvar = SvTRUE(cb) ? 2 : 1;
+ else
+ w->uvar = 0;
#endif /* VMG_UVAR */
-
- w->vtbl = t;
- w->sig = sig;
-#if VMG_UVAR
- w->uvar = (w->cb_fetch || w->cb_store || w->cb_exists || w->cb_delete);
-#endif /* VMG_UVAR */
+#if VMG_MULTIPLICITY
+ w->owner = aTHX;
+#endif /* VMG_MULTIPLICITY */
+ w->vtbl = t;
+ w->sig = sig;
sv = MGWIZ2SV(w);
- mg = sv_magicext(sv, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, -1);
+ mg = sv_magicext(sv, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, 0);
mg->mg_private = SIG_WIZ;
+ SvREADONLY_on(sv);
+
+ hv_store(MY_CXT, buf, sprintf(buf, "%u", sig), sv, 0);
- hv_store(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), sv, 0);
- ++MY_CXT.count;
-
RETVAL = newRV_noinc(sv);
OUTPUT:
RETVAL
PROTOTYPE:
CODE:
dMY_CXT;
- if (MY_CXT.count >= SIG_NBR) { croak(vmg_toomanysigs); }
+ if (HvKEYS(MY_CXT) >= SIG_NBR) { croak(vmg_toomanysigs); }
RETVAL = newSVuv(vmg_gensig());
OUTPUT:
RETVAL
AV *args = NULL;
SV *ret;
CODE:
- dMY_CXT;
- if (SvROK(wiz)) {
- wiz = SvRV(wiz);
- } else if (SvOK(wiz)) {
- char buf[8];
- SV **old;
- U16 sig = vmg_sv2sig(wiz);
- if ((old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0))) {
- wiz = *old;
- } else {
- XSRETURN_UNDEF;
- }
- } else {
- croak(vmg_invalid_sig);
- }
+ wiz = vmg_wizard_wiz(wiz);
+ if (!wiz)
+ XSRETURN_UNDEF;
if (items > 2) {
I32 i;
args = newAV();
SV *data;
U16 sig;
CODE:
- dMY_CXT;
- if (SvROK(wiz)) {
- sig = SV2MGWIZ(SvRV(wiz))->sig;
- } else if (SvOK(wiz)) {
- char buf[8];
- sig = vmg_sv2sig(wiz);
- if (!hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0)) {
- XSRETURN_UNDEF;
- }
- } else {
- croak(vmg_invalid_wiz);
- }
+ sig = vmg_wizard_sig(wiz);
+ if (!sig)
+ XSRETURN_UNDEF;
data = vmg_data_get(SvRV(sv), sig);
if (!data) { XSRETURN_UNDEF; }
ST(0) = data;
PREINIT:
U16 sig;
CODE:
- dMY_CXT;
- if (SvROK(wiz)) {
- sig = SV2MGWIZ(SvRV(wiz))->sig;
- } else if (SvOK(wiz)) {
- char buf[8];
- sig = vmg_sv2sig(wiz);
- if (!hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0)) {
- XSRETURN_UNDEF;
- }
- } else {
- croak(vmg_invalid_wiz);
- }
+ sig = vmg_wizard_sig(wiz);
+ if (!sig)
+ XSRETURN_UNDEF;
RETVAL = newSVuv(vmg_dispell(SvRV(sv), sig));
OUTPUT:
RETVAL
projects / perl / modules / Variable-Magic.git / blobdiff