#define __PACKAGE__ "Variable::Magic"
+#undef VOID2
+#ifdef __cplusplus
+# define VOID2(T, P) static_cast<T>(P)
+#else
+# define VOID2(T, P) (P)
+#endif
+
#ifndef VMG_PERL_PATCHLEVEL
# ifdef PERL_PATCHNUM
# define VMG_PERL_PATCHLEVEL PERL_PATCHNUM
# 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
#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 */
+# define VMG_LOCK(M) MUTEX_LOCK(M)
+# define VMG_UNLOCK(M) MUTEX_UNLOCK(M)
+#else
+# define VMG_LOCK(M)
+# define VMG_UNLOCK(M)
+#endif
/* --- Compatibility ------------------------------------------------------- */
# define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
#endif
-#ifndef mPUSHu
-# define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U)))
+#ifndef SvRV_const
+# define SvRV_const(sv) SvRV((SV *) sv)
#endif
-#ifndef SvPV_const
-# define SvPV_const SvPV
+#ifndef SvREFCNT_inc_simple_void
+# define SvREFCNT_inc_simple_void(sv) ((void) SvREFCNT_inc(sv))
+#endif
+
+#ifndef mPUSHu
+# define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U)))
#endif
#ifndef PERL_MAGIC_ext
# define PERL_MAGIC_tied 'P'
#endif
-#ifndef MGf_COPY
-# define MGf_COPY 0
-#endif
-
-#ifndef MGf_DUP
-# define MGf_DUP 0
-#endif
-
#ifndef MGf_LOCAL
# define MGf_LOCAL 0
#endif
# 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, but only
- * enable it on 5.10 */
+/* uvar magic and Hash::Util::FieldHash were commited with 28419, but we only
+ * enable them on 5.10 */
#if VMG_HAS_PERL(5, 10, 0)
# define VMG_UVAR 1
#else
# define VMG_UVAR 0
#endif
+#if VMG_HAS_PERL_MAINT(5, 11, 0, 32969) || VMG_HAS_PERL(5, 12, 0)
+# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1
+#else
+# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0
+#endif
+
+#if VMG_HAS_PERL(5, 17, 4)
+# define VMG_COMPAT_SCALAR_NOLEN 1
+#else
+# define VMG_COMPAT_SCALAR_NOLEN 0
+#endif
+
/* Applied to dev-5.9 as 25854, integrated to maint-5.8 as 28160, partially
* reverted to dev-5.11 as 9cdcb38b */
#if VMG_HAS_PERL_MAINT(5, 8, 9, 28160) || VMG_HAS_PERL_MAINT(5, 9, 3, 25854) || VMG_HAS_PERL(5, 10, 0)
# ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN
-# define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
+# if VMG_HAS_PERL(5, 11, 0)
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
+# else
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
+# endif
# endif
# ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID
# define VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID 1
#endif
/* Applied to dev-5.11 as 34908 */
-#if VMG_HAS_PERL_MAINT(5, 11, 0, 34908)
+#if VMG_HAS_PERL_MAINT(5, 11, 0, 34908) || VMG_HAS_PERL(5, 12, 0)
# define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 1
#else
# define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 0
# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
#endif
-#if VMG_HAS_PERL_MAINT(5, 11, 0, 32969)
-# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1
+#if VMG_HAS_PERL(5, 11, 0)
+# define VMG_COMPAT_HASH_DELETE_NOUVAR_VOID 1
#else
-# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0
+# define VMG_COMPAT_HASH_DELETE_NOUVAR_VOID 0
#endif
-#if VMG_UVAR
+#if VMG_HAS_PERL(5, 13, 2)
+# define VMG_COMPAT_GLOB_GET 1
+#else
+# define VMG_COMPAT_GLOB_GET 0
+#endif
+
+#define VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE (VMG_HAS_PERL(5, 10, 0) && !VMG_HAS_PERL(5, 10, 1))
+
+/* NewOp() isn't public in perl 5.8.0. */
+#define VMG_RESET_RMG_NEEDS_TRAMPOLINE (VMG_UVAR && (VMG_THREADSAFE || !VMG_HAS_PERL(5, 8, 1)))
+
+/* ... Bug-free mg_magical ................................................. */
+
+/* See the discussion at http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-01/msg00036.html */
+
+#if VMG_HAS_PERL(5, 11, 3)
+
+#define vmg_mg_magical(S) mg_magical(S)
+
+#else
+
+STATIC void vmg_mg_magical(SV *sv) {
+ const MAGIC *mg;
-/* 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. */
+ SvMAGICAL_off(sv);
if ((mg = SvMAGIC(sv))) {
- SvRMAGICAL_off(sv);
do {
const MGVTBL* const vtbl = mg->mg_virtual;
if (vtbl) {
- if (vtbl->svt_clear) {
+ 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);
}
}
-#endif /* VMG_UVAR */
+#endif
+
+/* --- Trampoline ops ------------------------------------------------------ */
+
+#define VMG_NEEDS_TRAMPOLINE VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE || VMG_RESET_RMG_NEEDS_TRAMPOLINE
+
+#if VMG_NEEDS_TRAMPOLINE
+
+typedef struct {
+ OP temp;
+ SVOP target;
+} vmg_trampoline;
+
+STATIC void vmg_trampoline_init(vmg_trampoline *t, OP *(*cb)(pTHX)) {
+ t->temp.op_type = OP_STUB;
+ t->temp.op_ppaddr = 0;
+ t->temp.op_next = (OP *) &t->target;
+ t->temp.op_flags = 0;
+ t->temp.op_private = 0;
+
+ t->target.op_type = OP_STUB;
+ t->target.op_ppaddr = cb;
+ t->target.op_next = NULL;
+ t->target.op_flags = 0;
+ t->target.op_private = 0;
+ t->target.op_sv = NULL;
+}
+
+STATIC OP *vmg_trampoline_bump(pTHX_ vmg_trampoline *t, SV *sv, OP *o) {
+#define vmg_trampoline_bump(T, S, O) vmg_trampoline_bump(aTHX_ (T), (S), (O))
+ t->temp = *o;
+ t->temp.op_next = (OP *) &t->target;
+
+ t->target.op_sv = sv;
+ t->target.op_next = o->op_next;
+
+ return &t->temp;
+}
+
+#endif /* VMG_NEEDS_TRAMPOLINE */
+
+/* --- Safe version of call_sv() ------------------------------------------- */
+
+STATIC I32 vmg_call_sv(pTHX_ SV *sv, I32 flags, int (*cleanup)(pTHX_ void *), void *ud) {
+#define vmg_call_sv(S, F, C, U) vmg_call_sv(aTHX_ (S), (F), (C), (U))
+ I32 ret, cxix;
+ PERL_CONTEXT saved_cx;
+ SV *old_err = NULL;
+
+ if (SvTRUE(ERRSV)) {
+ old_err = ERRSV;
+ ERRSV = newSV(0);
+ }
+
+ cxix = (cxstack_ix < cxstack_max) ? (cxstack_ix + 1) : Perl_cxinc(aTHX);
+ /* The last popped context will be reused by call_sv(), but our callers may
+ * still need its previous value. Back it up so that it isn't clobbered. */
+ saved_cx = cxstack[cxix];
+
+ ret = call_sv(sv, flags | G_EVAL);
+
+ cxstack[cxix] = saved_cx;
+
+ if (SvTRUE(ERRSV)) {
+ if (old_err) {
+ sv_setsv(old_err, ERRSV);
+ SvREFCNT_dec(ERRSV);
+ ERRSV = old_err;
+ }
+ if (IN_PERL_COMPILETIME) {
+ if (!PL_in_eval) {
+ if (PL_errors)
+ sv_catsv(PL_errors, ERRSV);
+ else
+ Perl_warn(aTHX_ "%s", SvPV_nolen(ERRSV));
+ SvCUR_set(ERRSV, 0);
+ }
+#if VMG_HAS_PERL(5, 10, 0) || defined(PL_parser)
+ if (PL_parser)
+ ++PL_parser->error_count;
+#elif defined(PL_error_count)
+ ++PL_error_count;
+#else
+ ++PL_Ierror_count;
+#endif
+ } else {
+ if (!cleanup || cleanup(aTHX_ ud))
+ croak(NULL);
+ }
+ } else {
+ if (old_err) {
+ SvREFCNT_dec(ERRSV);
+ ERRSV = old_err;
+ }
+ }
+
+ return ret;
+}
/* --- Stolen chunk of B --------------------------------------------------- */
return ((o->op_private & OPpASSIGN_BACKWARDS) ? OPc_UNOP : OPc_BINOP);
if (o->op_type == OP_AELEMFAST) {
+#if PERL_VERSION <= 14
if (o->op_flags & OPf_SPECIAL)
return OPc_BASEOP;
else
+#endif
#ifdef USE_ITHREADS
return OPc_PADOP;
#else
return OPc_BASEOP;
}
+/* --- Error messages ------------------------------------------------------ */
+
+STATIC const char vmg_invalid_wiz[] = "Invalid wizard object";
+STATIC const char vmg_wrongargnum[] = "Wrong number of arguments";
+STATIC const char vmg_argstorefailed[] = "Error while storing arguments";
+
/* --- Context-safe global data -------------------------------------------- */
#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
typedef struct {
- HV *wizards;
- HV *b__op_stashes[OPc_MAX];
+ HV *b__op_stashes[OPc_MAX];
+ I32 depth;
+ MAGIC *freed_tokens;
+#if VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE
+ vmg_trampoline propagate_errsv;
+#endif
+#if VMG_RESET_RMG_NEEDS_TRAMPOLINE
+ vmg_trampoline reset_rmg;
+#endif
} my_cxt_t;
START_MY_CXT
-/* --- Error messages ------------------------------------------------------ */
+/* --- <vmg_vtable> structure ---------------------------------------------- */
-STATIC const char vmg_invalid_wiz[] = "Invalid wizard object";
-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";
-STATIC const char vmg_argstorefailed[] = "Error while storing arguments";
-STATIC const char vmg_globstorefail[] = "Couldn't store global wizard information";
+#if VMG_THREADSAFE
-/* --- Signatures ---------------------------------------------------------- */
+typedef struct {
+ MGVTBL *vtbl;
+ U32 refcount;
+} vmg_vtable;
-#define SIG_MIN ((U16) 0u)
-#define SIG_MAX ((U16) ((1u << 16) - 1))
-#define SIG_NBR (SIG_MAX - SIG_MIN + 1)
+STATIC vmg_vtable *vmg_vtable_alloc(pTHX) {
+#define vmg_vtable_alloc() vmg_vtable_alloc(aTHX)
+ vmg_vtable *t;
-#define SIG_WZO ((U16) (0x3891))
-#define SIG_WIZ ((U16) (0x3892))
+ t = VOID2(vmg_vtable *, PerlMemShared_malloc(sizeof *t));
-/* ... Generate signatures ................................................. */
+ t->vtbl = VOID2(MGVTBL *, PerlMemShared_malloc(sizeof *t->vtbl));
+ t->refcount = 1;
-STATIC U16 vmg_gensig(pTHX) {
-#define vmg_gensig() vmg_gensig(aTHX)
- U16 sig;
- char buf[8];
- dMY_CXT;
+ return t;
+}
+
+#define vmg_vtable_vtbl(T) (T)->vtbl
+
+STATIC perl_mutex vmg_vtable_refcount_mutex;
+
+STATIC vmg_vtable *vmg_vtable_dup(pTHX_ vmg_vtable *t) {
+#define vmg_vtable_dup(T) vmg_vtable_dup(aTHX_ (T))
+ VMG_LOCK(&vmg_vtable_refcount_mutex);
+ ++t->refcount;
+ VMG_UNLOCK(&vmg_vtable_refcount_mutex);
+
+ return t;
+}
+
+STATIC void vmg_vtable_free(pTHX_ vmg_vtable *t) {
+#define vmg_vtable_free(T) vmg_vtable_free(aTHX_ (T))
+ U32 refcount;
+
+ VMG_LOCK(&vmg_vtable_refcount_mutex);
+ refcount = --t->refcount;
+ VMG_UNLOCK(&vmg_vtable_refcount_mutex);
+
+ if (!refcount) {
+ PerlMemShared_free(t->vtbl);
+ PerlMemShared_free(t);
+ }
+}
+
+#else /* VMG_THREADSAFE */
+
+typedef MGVTBL vmg_vtable;
- if (HvKEYS(MY_CXT.wizards) >= SIG_NBR) croak(vmg_toomanysigs);
+STATIC vmg_vtable *vmg_vtable_alloc(pTHX) {
+#define vmg_vtable_alloc() vmg_vtable_alloc(aTHX)
+ vmg_vtable *t;
- do {
- sig = SIG_NBR * Drand01() + SIG_MIN;
- } while (hv_exists(MY_CXT.wizards, buf, sprintf(buf, "%u", sig)));
+ Newx(t, 1, vmg_vtable);
- return sig;
+ return t;
}
-/* --- MGWIZ structure ----------------------------------------------------- */
+#define vmg_vtable_vtbl(T) ((MGVTBL *) (T))
+
+#define vmg_vtable_free(T) Safefree(T)
+
+#endif /* !VMG_THREADSAFE */
+
+/* --- <vmg_wizard> structure ---------------------------------------------- */
typedef struct {
- MGVTBL *vtbl;
+ vmg_vtable *vtable;
- U16 sig;
- U8 uvar;
U8 opinfo;
+ U8 uvar;
SV *cb_data;
SV *cb_get, *cb_set, *cb_len, *cb_clear, *cb_free;
-#if MGf_COPY
SV *cb_copy;
-#endif /* MGf_COPY */
-#if MGf_DUP
SV *cb_dup;
-#endif /* MGf_DUP */
#if MGf_LOCAL
SV *cb_local;
#endif /* MGf_LOCAL */
#if VMG_UVAR
SV *cb_fetch, *cb_store, *cb_exists, *cb_delete;
#endif /* VMG_UVAR */
-#if VMG_MULTIPLICITY
- tTHX owner;
-#endif /* VMG_MULTIPLICITY */
-} MGWIZ;
+} vmg_wizard;
-#define MGWIZ2SV(W) (newSVuv(PTR2UV(W)))
-#define SV2MGWIZ(S) (INT2PTR(MGWIZ*, SvUVX((SV *) (S))))
-
-/* ... Construct private data .............................................. */
+STATIC void vmg_op_info_init(pTHX_ unsigned int opinfo);
-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);
+STATIC vmg_wizard *vmg_wizard_alloc(pTHX_ UV opinfo) {
+#define vmg_wizard_alloc(O) vmg_wizard_alloc(aTHX_ (O))
+ vmg_wizard *w;
- dSP;
+ Newx(w, 1, vmg_wizard);
- ENTER;
- SAVETMPS;
+ w->uvar = 0;
+ w->opinfo = (U8) ((opinfo < 255) ? opinfo : 255);
+ if (w->opinfo)
+ vmg_op_info_init(aTHX_ w->opinfo);
- PUSHMARK(SP);
- EXTEND(SP, alen + 1);
- PUSHs(sv_2mortal(newRV_inc(sv)));
- for (i = 0; i < alen; ++i)
- PUSHs(*av_fetch(args, i, 0));
- PUTBACK;
+ w->vtable = vmg_vtable_alloc();
- call_sv(ctor, G_SCALAR);
+ return w;
+}
- SPAGAIN;
- nsv = POPs;
-#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() */
+STATIC void vmg_wizard_free(pTHX_ vmg_wizard *w) {
+#define vmg_wizard_free(W) vmg_wizard_free(aTHX_ (W))
+ if (!w)
+ return;
+
+ /* During global destruction, any of the callbacks may already have been
+ * freed, so we can't rely on still being able to access them. */
+ if (!PL_dirty) {
+ SvREFCNT_dec(w->cb_data);
+ SvREFCNT_dec(w->cb_get);
+ SvREFCNT_dec(w->cb_set);
+ SvREFCNT_dec(w->cb_len);
+ SvREFCNT_dec(w->cb_clear);
+ SvREFCNT_dec(w->cb_free);
+ SvREFCNT_dec(w->cb_copy);
+#if 0
+ SvREFCNT_dec(w->cb_dup);
#endif
- PUTBACK;
+#if MGf_LOCAL
+ SvREFCNT_dec(w->cb_local);
+#endif /* MGf_LOCAL */
+#if VMG_UVAR
+ SvREFCNT_dec(w->cb_fetch);
+ SvREFCNT_dec(w->cb_store);
+ SvREFCNT_dec(w->cb_exists);
+ SvREFCNT_dec(w->cb_delete);
+#endif /* VMG_UVAR */
+ }
- FREETMPS;
- LEAVE;
+ /* PerlMemShared_free() and Safefree() are still fine during global
+ * destruction though. */
+ vmg_vtable_free(w->vtable);
+ Safefree(w);
- return nsv;
+ return;
}
-STATIC SV *vmg_data_get(SV *sv, U16 sig) {
- MAGIC *mg, *moremagic;
+#if VMG_THREADSAFE
- if (SvTYPE(sv) >= SVt_PVMG) {
- for (mg = SvMAGIC(sv); mg; mg = moremagic) {
- moremagic = mg->mg_moremagic;
- if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
- MGWIZ *w = SV2MGWIZ(mg->mg_ptr);
- if (w->sig == sig)
- break;
- }
- }
- if (mg)
- return mg->mg_obj;
- }
+#define VMG_CLONE_CB(N) \
+ z->cb_ ## N = (w->cb_ ## N) ? SvREFCNT_inc(sv_dup(w->cb_ ## N, params)) \
+ : NULL;
- return NULL;
-}
+STATIC const vmg_wizard *vmg_wizard_dup(pTHX_ const vmg_wizard *w, CLONE_PARAMS *params) {
+#define vmg_wizard_dup(W, P) vmg_wizard_dup(aTHX_ (W), (P))
+ vmg_wizard *z;
-/* ... Magic cast/dispell .................................................. */
+ if (!w)
+ return NULL;
+
+ Newx(z, 1, vmg_wizard);
+
+ z->vtable = vmg_vtable_dup(w->vtable);
+ z->uvar = w->uvar;
+ z->opinfo = w->opinfo;
+ VMG_CLONE_CB(data);
+ VMG_CLONE_CB(get);
+ VMG_CLONE_CB(set);
+ VMG_CLONE_CB(len);
+ VMG_CLONE_CB(clear);
+ VMG_CLONE_CB(free);
+ VMG_CLONE_CB(copy);
+ VMG_CLONE_CB(dup);
+#if MGf_LOCAL
+ VMG_CLONE_CB(local);
+#endif /* MGf_LOCAL */
#if VMG_UVAR
-STATIC I32 vmg_svt_val(pTHX_ IV, SV *);
+ VMG_CLONE_CB(fetch);
+ VMG_CLONE_CB(store);
+ VMG_CLONE_CB(exists);
+ VMG_CLONE_CB(delete);
+#endif /* VMG_UVAR */
-STATIC void vmg_uvar_del(SV *sv, MAGIC *prevmagic, MAGIC *mg, MAGIC *moremagic) {
- if (prevmagic) {
- prevmagic->mg_moremagic = moremagic;
- } else {
- SvMAGIC_set(sv, moremagic);
- }
- mg->mg_moremagic = NULL;
- Safefree(mg->mg_ptr);
- Safefree(mg);
+ return z;
}
-#endif /* VMG_UVAR */
-STATIC UV vmg_cast(pTHX_ SV *sv, SV *wiz, AV *args) {
-#define vmg_cast(S, W, A) vmg_cast(aTHX_ (S), (W), (A))
- MAGIC *mg = NULL, *moremagic = NULL;
- MGWIZ *w;
- SV *data;
- U32 oldgmg = SvGMAGICAL(sv);
+#endif /* VMG_THREADSAFE */
- w = SV2MGWIZ(wiz);
+#define vmg_wizard_id(W) PTR2IV(vmg_vtable_vtbl((W)->vtable))
- if (SvTYPE(sv) >= SVt_PVMG) {
- for (mg = SvMAGIC(sv); mg; mg = moremagic) {
- moremagic = mg->mg_moremagic;
- if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
- MGWIZ *z = SV2MGWIZ(mg->mg_ptr);
- if (z->sig == w->sig)
- break;
- }
- }
- if (mg)
- return 1;
- }
+/* --- Wizard SV objects --------------------------------------------------- */
- 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 = SIG_WIZ;
-#if MGf_COPY
- if (w->cb_copy)
- mg->mg_flags |= MGf_COPY;
-#endif /* MGf_COPY */
-#if 0 /* MGf_DUP */
- if (w->cb_dup)
- mg->mg_flags |= MGf_DUP;
-#endif /* MGf_DUP */
+STATIC int vmg_wizard_sv_free(pTHX_ SV *sv, MAGIC *mg) {
+ vmg_wizard_free((vmg_wizard *) mg->mg_ptr);
+
+ return 0;
+}
+
+#if VMG_THREADSAFE
+
+STATIC int vmg_wizard_sv_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *params) {
+ mg->mg_ptr = (char *) vmg_wizard_dup((const vmg_wizard *) mg->mg_ptr, params);
+
+ return 0;
+}
+
+#endif /* VMG_THREADSAFE */
+
+STATIC MGVTBL vmg_wizard_sv_vtbl = {
+ NULL, /* get */
+ NULL, /* set */
+ NULL, /* len */
+ NULL, /* clear */
+ vmg_wizard_sv_free, /* free */
+ NULL, /* copy */
+#if VMG_THREADSAFE
+ vmg_wizard_sv_dup, /* dup */
+#else
+ NULL, /* dup */
+#endif
#if MGf_LOCAL
- if (w->cb_local)
- mg->mg_flags |= MGf_LOCAL;
+ NULL, /* local */
#endif /* MGf_LOCAL */
+};
- if (SvTYPE(sv) < SVt_PVHV)
- goto done;
+STATIC SV *vmg_wizard_sv_new(pTHX_ const vmg_wizard *w) {
+#define vmg_wizard_sv_new(W) vmg_wizard_sv_new(aTHX_ (W))
+ SV *wiz;
- /* The GMAGICAL flag only says that a hash is tied or has uvar magic - get
- * magic is actually never called for them. If the GMAGICAL flag was off before
- * calling sv_magicext(), the hash isn't tied and has no uvar magic. If it's
- * now on, then this wizard has get magic. Hence we can work around the
- * get/clear shortcoming by turning the GMAGICAL flag off. If the current magic
- * has uvar callbacks, it will be turned back on later. */
- if (!oldgmg && SvGMAGICAL(sv))
- SvGMAGICAL_off(sv);
+#if VMG_THREADSAFE
+ wiz = newSV(0);
+#else
+ wiz = newSViv(PTR2IV(w));
+#endif
-#if VMG_UVAR
- if (w->uvar) {
- MAGIC *prevmagic;
- struct ufuncs uf[2];
+ if (w) {
+ MAGIC *mg = sv_magicext(wiz, NULL, PERL_MAGIC_ext, &vmg_wizard_sv_vtbl,
+ (const char *) w, 0);
+ mg->mg_private = 0;
+#if VMG_THREADSAFE
+ mg->mg_flags |= MGf_DUP;
+#endif
+ }
+ SvREADONLY_on(wiz);
- uf[0].uf_val = vmg_svt_val;
- uf[0].uf_set = NULL;
- uf[0].uf_index = 0;
- uf[1].uf_val = NULL;
- uf[1].uf_set = NULL;
- uf[1].uf_index = 0;
+ return wiz;
+}
- /* One uvar magic in the chain is enough. */
- for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) {
- moremagic = mg->mg_moremagic;
- if (mg->mg_type == PERL_MAGIC_uvar)
- break;
- }
+#if VMG_THREADSAFE
- if (mg) { /* Found another uvar magic. */
- struct ufuncs *olduf = (struct ufuncs *) mg->mg_ptr;
- if (olduf->uf_val == vmg_svt_val) {
- /* It's our uvar magic, nothing to do. oldgmg was true. */
- goto done;
- } else {
- /* It's another uvar magic, backup it and replace it by ours. */
- uf[1] = *olduf;
- vmg_uvar_del(sv, prevmagic, mg, moremagic);
- }
- }
+#define vmg_sv_has_wizard_type(S) (SvTYPE(S) >= SVt_PVMG)
- vmg_sv_magicuvar(sv, (const char *) &uf, sizeof(uf));
- /* Our hash now carries uvar magic. The uvar/clear shortcoming has to be
- * handled by our uvar callback. */
+STATIC const vmg_wizard *vmg_wizard_from_sv_nocheck(const SV *wiz) {
+ MAGIC *mg;
+
+ for (mg = SvMAGIC(wiz); mg; mg = mg->mg_moremagic) {
+ if (mg->mg_type == PERL_MAGIC_ext && mg->mg_virtual == &vmg_wizard_sv_vtbl)
+ return (const vmg_wizard *) mg->mg_ptr;
}
-#endif /* VMG_UVAR */
-done:
- return 1;
+ return NULL;
}
-STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
-#define vmg_dispell(S, Z) vmg_dispell(aTHX_ (S), (Z))
-#if VMG_UVAR
- U32 uvars = 0;
-#endif /* VMG_UVAR */
- MAGIC *mg, *prevmagic, *moremagic = NULL;
+#else /* VMG_THREADSAFE */
+
+#define vmg_sv_has_wizard_type(S) SvIOK(S)
+
+#define vmg_wizard_from_sv_nocheck(W) INT2PTR(const vmg_wizard *, SvIVX(W))
+
+#endif /* !VMG_THREADSAFE */
+
+#define vmg_wizard_from_sv(W) (vmg_sv_has_wizard_type(W) ? vmg_wizard_from_sv_nocheck(W) : NULL)
+
+STATIC const vmg_wizard *vmg_wizard_from_mg(const MAGIC *mg) {
+ if (mg->mg_type == PERL_MAGIC_ext && mg->mg_len == HEf_SVKEY) {
+ SV *sv = (SV *) mg->mg_ptr;
+
+ if (vmg_sv_has_wizard_type(sv))
+ return vmg_wizard_from_sv_nocheck(sv);
+ }
+
+ return NULL;
+}
+
+#define vmg_wizard_from_mg_nocheck(M) vmg_wizard_from_sv_nocheck((const SV *) (M)->mg_ptr)
+
+/* --- User-level functions implementation --------------------------------- */
+
+STATIC const MAGIC *vmg_find(const SV *sv, const vmg_wizard *w) {
+ const MAGIC *mg;
+ IV wid;
+
+ if (SvTYPE(sv) < SVt_PVMG)
+ return NULL;
+
+ wid = vmg_wizard_id(w);
+
+ for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ const vmg_wizard *z = vmg_wizard_from_mg(mg);
+
+ if (z && vmg_wizard_id(z) == wid)
+ return mg;
+ }
+
+ return NULL;
+}
+
+/* ... Construct private data .............................................. */
+
+STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, SV **args, I32 items) {
+#define vmg_data_new(C, S, A, I) vmg_data_new(aTHX_ (C), (S), (A), (I))
+ I32 i;
+ SV *nsv;
+
+ dSP;
+
+ ENTER;
+ SAVETMPS;
+
+ PUSHMARK(SP);
+ EXTEND(SP, items + 1);
+ PUSHs(sv_2mortal(newRV_inc(sv)));
+ for (i = 0; i < items; ++i)
+ PUSHs(args[i]);
+ PUTBACK;
+
+ vmg_call_sv(ctor, G_SCALAR, 0, NULL);
+
+ SPAGAIN;
+ nsv = POPs;
+#if VMG_HAS_PERL(5, 8, 3)
+ SvREFCNT_inc_simple_void(nsv); /* Or it will be destroyed in FREETMPS */
+#else
+ nsv = sv_newref(nsv); /* Workaround some bug in SvREFCNT_inc() */
+#endif
+ PUTBACK;
+
+ FREETMPS;
+ LEAVE;
+
+ return nsv;
+}
+
+STATIC SV *vmg_data_get(pTHX_ SV *sv, const vmg_wizard *w) {
+#define vmg_data_get(S, W) vmg_data_get(aTHX_ (S), (W))
+ const MAGIC *mg = vmg_find(sv, w);
+
+ return mg ? mg->mg_obj : NULL;
+}
+
+/* ... Magic cast/dispell .................................................. */
+
+#if VMG_UVAR
+
+STATIC I32 vmg_svt_val(pTHX_ IV, SV *);
+
+typedef struct {
+ struct ufuncs new_uf;
+ struct ufuncs old_uf;
+} vmg_uvar_ud;
+
+#endif /* VMG_UVAR */
+
+STATIC void vmg_mg_del(pTHX_ SV *sv, MAGIC *prevmagic, MAGIC *mg, MAGIC *moremagic) {
+#define vmg_mg_del(S, P, M, N) vmg_mg_del(aTHX_ (S), (P), (M), (N))
+ dMY_CXT;
+
+ if (prevmagic)
+ prevmagic->mg_moremagic = moremagic;
+ else
+ SvMAGIC_set(sv, moremagic);
+
+ /* Destroy private data */
+#if VMG_UVAR
+ if (mg->mg_type == PERL_MAGIC_uvar) {
+ Safefree(mg->mg_ptr);
+ } else {
+#endif /* VMG_UVAR */
+ if (mg->mg_obj != sv) {
+ SvREFCNT_dec(mg->mg_obj);
+ mg->mg_obj = NULL;
+ }
+ /* Unreference the wizard */
+ SvREFCNT_dec((SV *) mg->mg_ptr);
+ mg->mg_ptr = NULL;
+#if VMG_UVAR
+ }
+#endif /* VMG_UVAR */
+
+ if (MY_CXT.depth) {
+ mg->mg_moremagic = MY_CXT.freed_tokens;
+ MY_CXT.freed_tokens = mg;
+ } else {
+ mg->mg_moremagic = NULL;
+ Safefree(mg);
+ }
+}
+
+STATIC int vmg_magic_chain_free(pTHX_ MAGIC *mg, MAGIC *skip) {
+#define vmg_magic_chain_free(M, S) vmg_magic_chain_free(aTHX_ (M), (S))
+ int skipped = 0;
+
+ while (mg) {
+ MAGIC *moremagic = mg->mg_moremagic;
+
+ if (mg == skip)
+ ++skipped;
+ else
+ Safefree(mg);
+
+ mg = moremagic;
+ }
+
+ return skipped;
+}
+
+STATIC UV vmg_cast(pTHX_ SV *sv, const vmg_wizard *w, const SV *wiz, SV **args, I32 items) {
+#define vmg_cast(S, W, WIZ, A, I) vmg_cast(aTHX_ (S), (W), (WIZ), (A), (I))
+ MAGIC *mg;
+ MGVTBL *t;
+ SV *data;
+ U32 oldgmg;
+
+ if (vmg_find(sv, w))
+ return 1;
+
+ oldgmg = SvGMAGICAL(sv);
+
+ data = (w->cb_data) ? vmg_data_new(w->cb_data, sv, args, items) : NULL;
+
+ t = vmg_vtable_vtbl(w->vtable);
+ mg = sv_magicext(sv, data, PERL_MAGIC_ext, t, (const char *) wiz, HEf_SVKEY);
+ mg->mg_private = 0;
+
+ /* sv_magicext() calls mg_magical and increments data's refcount */
+ SvREFCNT_dec(data);
+
+ if (t->svt_copy)
+ mg->mg_flags |= MGf_COPY;
+#if 0
+ if (t->svt_dup)
+ mg->mg_flags |= MGf_DUP;
+#endif
+#if MGf_LOCAL
+ if (t->svt_local)
+ mg->mg_flags |= MGf_LOCAL;
+#endif /* MGf_LOCAL */
+
+ if (SvTYPE(sv) < SVt_PVHV)
+ goto done;
+
+ /* The GMAGICAL flag only says that a hash is tied or has uvar magic - get
+ * magic is actually never called for them. If the GMAGICAL flag was off before
+ * calling sv_magicext(), the hash isn't tied and has no uvar magic. If it's
+ * now on, then this wizard has get magic. Hence we can work around the
+ * get/clear shortcoming by turning the GMAGICAL flag off. If the current magic
+ * has uvar callbacks, it will be turned back on later. */
+ if (!oldgmg && SvGMAGICAL(sv))
+ SvGMAGICAL_off(sv);
+
+#if VMG_UVAR
+ if (w->uvar) {
+ MAGIC *prevmagic, *moremagic = NULL;
+ vmg_uvar_ud ud;
+
+ ud.new_uf.uf_val = vmg_svt_val;
+ ud.new_uf.uf_set = NULL;
+ ud.new_uf.uf_index = 0;
+ ud.old_uf.uf_val = NULL;
+ ud.old_uf.uf_set = NULL;
+ ud.old_uf.uf_index = 0;
+
+ /* One uvar magic in the chain is enough. */
+ for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) {
+ moremagic = mg->mg_moremagic;
+ if (mg->mg_type == PERL_MAGIC_uvar)
+ break;
+ }
+
+ if (mg) { /* Found another uvar magic. */
+ struct ufuncs *uf = (struct ufuncs *) mg->mg_ptr;
+ if (uf->uf_val == vmg_svt_val) {
+ /* It's our uvar magic, nothing to do. oldgmg was true. */
+ goto done;
+ } else {
+ /* It's another uvar magic, backup it and replace it by ours. */
+ ud.old_uf = *uf;
+ vmg_mg_del(sv, prevmagic, mg, moremagic);
+ }
+ }
+
+ sv_magic(sv, NULL, PERL_MAGIC_uvar, (const char *) &ud, sizeof(ud));
+ vmg_mg_magical(sv);
+ /* Our hash now carries uvar magic. The uvar/clear shortcoming has to be
+ * handled by our uvar callback. */
+ }
+#endif /* VMG_UVAR */
+
+done:
+ return 1;
+}
+
+STATIC UV vmg_dispell(pTHX_ SV *sv, const vmg_wizard *w) {
+#define vmg_dispell(S, W) vmg_dispell(aTHX_ (S), (W))
+#if VMG_UVAR
+ U32 uvars = 0;
+#endif /* VMG_UVAR */
+ MAGIC *mg, *prevmagic, *moremagic = NULL;
+ IV wid = vmg_wizard_id(w);
if (SvTYPE(sv) < SVt_PVMG)
return 0;
for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) {
+ const vmg_wizard *z;
+
moremagic = mg->mg_moremagic;
- if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
- MGWIZ *w = SV2MGWIZ(mg->mg_ptr);
- if (w->sig == sig) {
+
+ z = vmg_wizard_from_mg(mg);
+ if (z) {
+ IV zid = vmg_wizard_id(z);
+
#if VMG_UVAR
+ if (zid == wid) {
/* If the current has no uvar, short-circuit uvar deletion. */
- uvars = w->uvar ? (uvars + 1) : 0;
-#endif /* VMG_UVAR */
+ uvars = z->uvar ? (uvars + 1) : 0;
break;
-#if VMG_UVAR
- } else if (w->uvar) {
+ } else if (z->uvar) {
++uvars;
/* We can't break here since we need to find the ext magic to delete. */
-#endif /* VMG_UVAR */
}
+#else /* VMG_UVAR */
+ if (zid == wid)
+ break;
+#endif /* !VMG_UVAR */
}
}
if (!mg)
return 0;
- if (prevmagic) {
- prevmagic->mg_moremagic = moremagic;
- } else {
- SvMAGIC_set(sv, moremagic);
- }
- mg->mg_moremagic = NULL;
-
- /* Destroy private data */
- if (mg->mg_obj != sv)
- SvREFCNT_dec(mg->mg_obj);
- /* Unreference the wizard */
- SvREFCNT_dec((SV *) mg->mg_ptr);
- Safefree(mg);
+ vmg_mg_del(sv, prevmagic, mg, moremagic);
#if VMG_UVAR
if (uvars == 1 && SvTYPE(sv) >= SVt_PVHV) {
/* mg was the first ext magic in the chain that had uvar */
for (mg = moremagic; mg; mg = mg->mg_moremagic) {
- if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
- MGWIZ *w = SV2MGWIZ(mg->mg_ptr);
- if (w->uvar) {
- ++uvars;
- break;
- }
+ const vmg_wizard *z = vmg_wizard_from_mg(mg);
+
+ if (z && z->uvar) {
+ ++uvars;
+ break;
}
}
if (uvars == 1) {
- struct ufuncs *uf;
+ vmg_uvar_ud *ud;
+
for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic){
moremagic = mg->mg_moremagic;
if (mg->mg_type == PERL_MAGIC_uvar)
break;
}
- /* assert(mg); */
- uf = (struct ufuncs *) mg->mg_ptr;
- /* assert(uf->uf_val == vmg_svt_val); */
- if (uf[1].uf_val || uf[1].uf_set) {
+
+ ud = (vmg_uvar_ud *) mg->mg_ptr;
+ if (ud->old_uf.uf_val || ud->old_uf.uf_set) {
/* Revert the original uvar magic. */
- uf[0] = uf[1];
- Renew(uf, 1, struct ufuncs);
+ struct ufuncs *uf;
+ Newx(uf, 1, struct ufuncs);
+ *uf = ud->old_uf;
+ Safefree(ud);
mg->mg_ptr = (char *) uf;
- mg->mg_len = sizeof(struct ufuncs);
+ mg->mg_len = sizeof(*uf);
} else {
/* Remove the uvar magic. */
- vmg_uvar_del(sv, prevmagic, mg, moremagic);
+ vmg_mg_del(sv, prevmagic, mg, moremagic);
}
}
}
#endif /* VMG_UVAR */
+ vmg_mg_magical(sv);
+
return 1;
}
#define vmg_op_info_init(W) vmg_op_info_init(aTHX_ (W))
switch (opinfo) {
case VMG_OP_INFO_NAME:
-#if VMG_THREADSAFE
- MUTEX_LOCK(&vmg_op_name_init_mutex);
-#endif
+ VMG_LOCK(&vmg_op_name_init_mutex);
if (!vmg_op_name_init) {
OPCODE t;
for (t = 0; t < OP_max; ++t)
vmg_op_name_len[t] = strlen(PL_op_name[t]);
vmg_op_name_init = 1;
}
-#if VMG_THREADSAFE
- MUTEX_UNLOCK(&vmg_op_name_init_mutex);
-#endif
+ VMG_UNLOCK(&vmg_op_name_init_mutex);
break;
case VMG_OP_INFO_OBJECT: {
dMY_CXT;
if (!MY_CXT.b__op_stashes[0]) {
- opclass c;
+ int c;
require_pv("B.pm");
- for (c = 0; c < OPc_MAX; ++c)
+ for (c = OPc_NULL; c < OPc_MAX; ++c)
MY_CXT.b__op_stashes[c] = gv_stashpv(vmg_opclassnames[c], 1);
}
break;
return &PL_sv_undef;
}
-/* ... svt callbacks ....................................................... */
-
-#define VMG_CB_CALL_SET_RET(D) \
- { \
- SV *svr; \
- SPAGAIN; \
- svr = POPs; \
- ret = SvOK(svr) ? SvIV(svr) : (D); \
- PUTBACK; \
- }
+/* --- svt callbacks ------------------------------------------------------- */
#define VMG_CB_CALL_ARGS_MASK 15
#define VMG_CB_CALL_ARGS_SHIFT 4
-#define VMG_CB_CALL_OPINFO (VMG_OP_INFO_NAME|VMG_OP_INFO_OBJECT)
+#define VMG_CB_CALL_OPINFO (VMG_OP_INFO_NAME|VMG_OP_INFO_OBJECT) /* 1|2 */
+#define VMG_CB_CALL_GUARD 4
+
+STATIC int vmg_dispell_guard_oncroak(pTHX_ void *ud) {
+ dMY_CXT;
+
+ MY_CXT.depth--;
+
+ /* If we're at the upmost magic call and we're about to die, we can just free
+ * the tokens right now, since we will jump past the problematic part of our
+ * caller. */
+ if (MY_CXT.depth == 0 && MY_CXT.freed_tokens) {
+ vmg_magic_chain_free(MY_CXT.freed_tokens, NULL);
+ MY_CXT.freed_tokens = NULL;
+ }
+
+ return 1;
+}
+
+STATIC int vmg_dispell_guard_free(pTHX_ SV *sv, MAGIC *mg) {
+ vmg_magic_chain_free((MAGIC *) mg->mg_ptr, NULL);
+
+ return 0;
+}
+
+#if VMG_THREADSAFE
+
+STATIC int vmg_dispell_guard_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *params) {
+ /* The freed magic tokens aren't cloned by perl because it cannot reach them
+ * (they have been detached from their parent SV when they were enqueued).
+ * Hence there's nothing to purge in the new thread. */
+ mg->mg_ptr = NULL;
+
+ return 0;
+}
+
+#endif /* VMG_THREADSAFE */
+
+STATIC MGVTBL vmg_dispell_guard_vtbl = {
+ NULL, /* get */
+ NULL, /* set */
+ NULL, /* len */
+ NULL, /* clear */
+ vmg_dispell_guard_free, /* free */
+ NULL, /* copy */
+#if VMG_THREADSAFE
+ vmg_dispell_guard_dup, /* dup */
+#else
+ NULL, /* dup */
+#endif
+#if MGf_LOCAL
+ NULL, /* local */
+#endif /* MGf_LOCAL */
+};
+
+STATIC SV *vmg_dispell_guard_new(pTHX_ MAGIC *root) {
+#define vmg_dispell_guard_new(R) vmg_dispell_guard_new(aTHX_ (R))
+ SV *guard;
+
+ guard = sv_newmortal();
+ sv_magicext(guard, NULL, PERL_MAGIC_ext, &vmg_dispell_guard_vtbl,
+ (char *) root, 0);
+
+ return guard;
+}
STATIC int vmg_cb_call(pTHX_ SV *cb, unsigned int flags, SV *sv, ...) {
va_list ap;
- int ret;
+ int ret = 0;
unsigned int i, args, opinfo;
+ MAGIC **chain = NULL;
+ SV *svr;
dSP;
XPUSHs(vmg_op_info(opinfo));
PUTBACK;
- call_sv(cb, G_SCALAR);
+ if (flags & VMG_CB_CALL_GUARD) {
+ dMY_CXT;
+ MY_CXT.depth++;
+ vmg_call_sv(cb, G_SCALAR, vmg_dispell_guard_oncroak, NULL);
+ MY_CXT.depth--;
+ if (MY_CXT.depth == 0 && MY_CXT.freed_tokens)
+ chain = &MY_CXT.freed_tokens;
+ } else {
+ vmg_call_sv(cb, G_SCALAR, 0, NULL);
+ }
- VMG_CB_CALL_SET_RET(0);
+ SPAGAIN;
+ svr = POPs;
+ if (SvOK(svr))
+ ret = (int) SvIV(svr);
+ PUTBACK;
FREETMPS;
LEAVE;
+ if (chain) {
+ vmg_dispell_guard_new(*chain);
+ *chain = NULL;
+ }
+
return ret;
}
-#define vmg_cb_call1(I, F, S, A1) \
- vmg_cb_call(aTHX_ (I), (((F) << VMG_CB_CALL_ARGS_SHIFT) | 1), (S), (A1))
-#define vmg_cb_call2(I, F, S, A1, A2) \
- vmg_cb_call(aTHX_ (I), (((F) << VMG_CB_CALL_ARGS_SHIFT) | 2), (S), (A1), (A2))
-#define vmg_cb_call3(I, F, S, A1, A2, A3) \
- vmg_cb_call(aTHX_ (I), (((F) << VMG_CB_CALL_ARGS_SHIFT) | 3), (S), (A1), (A2), (A3))
+#define VMG_CB_FLAGS(OI, A) \
+ ((((unsigned int) (OI)) << VMG_CB_CALL_ARGS_SHIFT) | (A))
+
+#define vmg_cb_call1(I, OI, S, A1) \
+ vmg_cb_call(aTHX_ (I), VMG_CB_FLAGS((OI), 1), (S), (A1))
+#define vmg_cb_call2(I, OI, S, A1, A2) \
+ vmg_cb_call(aTHX_ (I), VMG_CB_FLAGS((OI), 2), (S), (A1), (A2))
+#define vmg_cb_call3(I, OI, S, A1, A2, A3) \
+ vmg_cb_call(aTHX_ (I), VMG_CB_FLAGS((OI), 3), (S), (A1), (A2), (A3))
+
+/* ... Default no-op magic callback ........................................ */
+
+STATIC int vmg_svt_default_noop(pTHX_ SV *sv, MAGIC *mg) {
+ return 0;
+}
+
+/* ... get magic ........................................................... */
STATIC int vmg_svt_get(pTHX_ SV *sv, MAGIC *mg) {
- const MGWIZ *w = SV2MGWIZ(mg->mg_ptr);
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
+
return vmg_cb_call1(w->cb_get, w->opinfo, sv, mg->mg_obj);
}
+#define vmg_svt_get_noop vmg_svt_default_noop
+
+/* ... set magic ........................................................... */
+
STATIC int vmg_svt_set(pTHX_ SV *sv, MAGIC *mg) {
- const MGWIZ *w = SV2MGWIZ(mg->mg_ptr);
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
+
return vmg_cb_call1(w->cb_set, w->opinfo, sv, mg->mg_obj);
}
+#define vmg_svt_set_noop vmg_svt_default_noop
+
+/* ... len magic ........................................................... */
+
+STATIC U32 vmg_sv_len(pTHX_ SV *sv) {
+#define vmg_sv_len(S) vmg_sv_len(aTHX_ (S))
+ STRLEN len;
+#if VMG_HAS_PERL(5, 9, 3)
+ const U8 *s = VOID2(const U8 *, VOID2(const void *, SvPV_const(sv, len)));
+#else
+ U8 *s = SvPV(sv, len);
+#endif
+
+ return DO_UTF8(sv) ? utf8_length(s, s + len) : len;
+}
+
STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
- const MGWIZ *w = SV2MGWIZ(mg->mg_ptr);
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
unsigned int opinfo = w->opinfo;
U32 len, ret;
+ SV *svr;
svtype t = SvTYPE(sv);
dSP;
PUSHs(sv_2mortal(newRV_inc(sv)));
PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
if (t < SVt_PVAV) {
- STRLEN l;
- U8 *s = (U8 *) SvPV_const(sv, l);
- if (DO_UTF8(sv))
- len = utf8_length(s, s + l);
- else
- len = l;
+ len = vmg_sv_len(sv);
mPUSHu(len);
} else if (t == SVt_PVAV) {
len = av_len((AV *) sv) + 1;
XPUSHs(vmg_op_info(opinfo));
PUTBACK;
- call_sv(w->cb_len, G_SCALAR);
+ vmg_call_sv(w->cb_len, G_SCALAR, 0, NULL);
- VMG_CB_CALL_SET_RET(len);
+ SPAGAIN;
+ svr = POPs;
+ ret = SvOK(svr) ? (U32) SvUV(svr) : len;
+ if (t == SVt_PVAV)
+ --ret;
+ PUTBACK;
FREETMPS;
LEAVE;
- return t == SVt_PVAV ? ret - 1 : ret;
+ return ret;
}
+STATIC U32 vmg_svt_len_noop(pTHX_ SV *sv, MAGIC *mg) {
+ U32 len = 0;
+ svtype t = SvTYPE(sv);
+
+ if (t < SVt_PVAV) {
+ len = vmg_sv_len(sv);
+ } else if (t == SVt_PVAV) {
+ len = (U32) av_len((AV *) sv);
+ }
+
+ return len;
+}
+
+/* ... clear magic ......................................................... */
+
STATIC int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) {
- const MGWIZ *w = SV2MGWIZ(mg->mg_ptr);
- return vmg_cb_call1(w->cb_clear, w->opinfo, sv, mg->mg_obj);
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
+ unsigned int flags = w->opinfo;
+
+#if !VMG_HAS_PERL(5, 12, 0)
+ flags |= VMG_CB_CALL_GUARD;
+#endif
+
+ return vmg_cb_call1(w->cb_clear, flags, sv, mg->mg_obj);
+}
+
+#define vmg_svt_clear_noop vmg_svt_default_noop
+
+/* ... free magic .......................................................... */
+
+#if VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE
+
+STATIC OP *vmg_pp_propagate_errsv(pTHX) {
+ SVOP *o = cSVOPx(PL_op);
+
+ if (o->op_sv) {
+ SvREFCNT_dec(ERRSV);
+ ERRSV = o->op_sv;
+ o->op_sv = NULL;
+ }
+
+ return NORMAL;
+}
+
+#endif /* VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE */
+
+STATIC int vmg_propagate_errsv_free(pTHX_ SV *sv, MAGIC *mg) {
+ if (mg->mg_obj) {
+ ERRSV = mg->mg_obj;
+ mg->mg_obj = NULL;
+ mg->mg_flags &= ~MGf_REFCOUNTED;
+ }
+
+ return 0;
+}
+
+/* perl is already kind enough to handle the cloning of the mg_obj member,
+ hence we don't need to define a dup magic callback. */
+
+STATIC MGVTBL vmg_propagate_errsv_vtbl = {
+ 0, /* get */
+ 0, /* set */
+ 0, /* len */
+ 0, /* clear */
+ vmg_propagate_errsv_free, /* free */
+ 0, /* copy */
+ 0, /* dup */
+#if MGf_LOCAL
+ 0, /* local */
+#endif /* MGf_LOCAL */
+};
+
+typedef struct {
+ SV *sv;
+ int in_eval;
+ I32 base;
+} vmg_svt_free_cleanup_ud;
+
+STATIC int vmg_svt_free_cleanup(pTHX_ void *ud_) {
+ vmg_svt_free_cleanup_ud *ud = VOID2(vmg_svt_free_cleanup_ud *, ud_);
+
+ if (ud->in_eval) {
+ U32 optype = PL_op ? PL_op->op_type : OP_NULL;
+
+ if (optype == OP_LEAVETRY || optype == OP_LEAVEEVAL) {
+ SV *errsv = newSVsv(ERRSV);
+
+ FREETMPS;
+ LEAVE_SCOPE(ud->base);
+
+#if VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE
+ if (optype == OP_LEAVETRY) {
+ dMY_CXT;
+ PL_op = vmg_trampoline_bump(&MY_CXT.propagate_errsv, errsv, PL_op);
+ } else if (optype == OP_LEAVEEVAL) {
+ SV *guard = sv_newmortal();
+ sv_magicext(guard, errsv, PERL_MAGIC_ext, &vmg_propagate_errsv_vtbl,
+ NULL, 0);
+ }
+#else /* !VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE */
+# if !VMG_HAS_PERL(5, 8, 9)
+ {
+ SV *guard = sv_newmortal();
+ sv_magicext(guard, errsv, PERL_MAGIC_ext, &vmg_propagate_errsv_vtbl,
+ NULL, 0);
+ }
+# else
+ sv_magicext(ERRSV, errsv, PERL_MAGIC_ext, &vmg_propagate_errsv_vtbl,
+ NULL, 0);
+ SvREFCNT_dec(errsv);
+# endif
+#endif /* VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE */
+
+ SAVETMPS;
+ }
+
+ /* Don't propagate */
+ return 0;
+ } else {
+ SV *sv = ud->sv;
+ MAGIC *mg;
+
+ /* We are about to croak() while sv is being destroyed. Try to clean up
+ * things a bit. */
+ mg = SvMAGIC(sv);
+ if (mg) {
+ vmg_mg_del(sv, NULL, mg, mg->mg_moremagic);
+ mg_magical(sv);
+ }
+ SvREFCNT_dec(sv);
+
+ vmg_dispell_guard_oncroak(aTHX_ NULL);
+
+ /* After that, propagate the error upwards. */
+ return 1;
+ }
}
STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
- const MGWIZ *w;
-#if VMG_HAS_PERL(5, 9, 5)
- PERL_CONTEXT saved_cx;
- I32 cxix;
-#endif
- unsigned int had_err, has_err, flags = G_SCALAR | G_EVAL;
+ vmg_svt_free_cleanup_ud ud;
+ const vmg_wizard *w;
int ret = 0;
+ SV *svr;
dSP;
- /* Don't even bother if we are in global destruction - the wizard is prisoner
- * of circular references and we are way beyond user realm */
+ /* During global destruction, we cannot be sure that the wizard and its free
+ * callback are still alive. */
if (PL_dirty)
return 0;
- w = SV2MGWIZ(mg->mg_ptr);
+ w = vmg_wizard_from_mg_nocheck(mg);
/* So that it survives the temp cleanup below */
- SvREFCNT_inc(sv);
+ SvREFCNT_inc_simple_void(sv);
-#if !VMG_HAS_PERL_MAINT(5, 11, 0, 32686)
+#if !(VMG_HAS_PERL_MAINT(5, 11, 0, 32686) || VMG_HAS_PERL(5, 12, 0))
/* 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
+ ud.sv = sv;
+ if (cxstack_ix < cxstack_max) {
+ ud.in_eval = (CxTYPE(cxstack + cxstack_ix + 1) == CXt_EVAL);
+ ud.base = ud.in_eval ? PL_scopestack[PL_scopestack_ix] : 0;
+ } else {
+ ud.in_eval = 0;
+ ud.base = 0;
+ }
+
ENTER;
SAVETMPS;
XPUSHs(vmg_op_info(w->opinfo));
PUTBACK;
- had_err = SvTRUE(ERRSV);
- if (had_err)
- flags |= G_KEEPERR;
-
-#if VMG_HAS_PERL(5, 9, 5)
- /* This context should not be used anymore, but since we croak in places the
- * core doesn't even dare to, some pointers to it may remain in the upper call
- * stack. Make sure call_sv() doesn't clobber it. */
- if (cxstack_ix < cxstack_max)
- cxix = cxstack_ix + 1;
- else
- cxix = Perl_cxinc(aTHX);
- saved_cx = cxstack[cxix];
-#endif
-
- call_sv(w->cb_free, flags);
-
-#if VMG_HAS_PERL(5, 9, 5)
- cxstack[cxix] = saved_cx;
-#endif
-
- has_err = SvTRUE(ERRSV);
- if (IN_PERL_COMPILETIME && !had_err && has_err)
- ++PL_error_count;
+ {
+ dMY_CXT;
+ MY_CXT.depth++;
+ vmg_call_sv(w->cb_free, G_SCALAR, vmg_svt_free_cleanup, &ud);
+ MY_CXT.depth--;
+ if (MY_CXT.depth == 0 && MY_CXT.freed_tokens) {
+ /* Free all the tokens in the chain but the current one (if it's present).
+ * It will be taken care of by our caller, Perl_mg_free(). */
+ vmg_magic_chain_free(MY_CXT.freed_tokens, mg);
+ MY_CXT.freed_tokens = NULL;
+ }
+ }
- VMG_CB_CALL_SET_RET(0);
+ SPAGAIN;
+ svr = POPs;
+ if (SvOK(svr))
+ ret = (int) SvIV(svr);
+ PUTBACK;
FREETMPS;
LEAVE;
return ret;
}
-#if MGf_COPY
-STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key,
-# if VMG_HAS_PERL_MAINT(5, 11, 0, 33256)
- I32 keylen
-# else
- int keylen
-# endif
- ) {
+#define vmg_svt_free_noop vmg_svt_default_noop
+
+#if VMG_HAS_PERL_MAINT(5, 11, 0, 33256) || VMG_HAS_PERL(5, 12, 0)
+# define VMG_SVT_COPY_KEYLEN_TYPE I32
+#else
+# define VMG_SVT_COPY_KEYLEN_TYPE int
+#endif
+
+/* ... copy magic .......................................................... */
+
+STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key, VMG_SVT_COPY_KEYLEN_TYPE keylen) {
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
SV *keysv;
- const MGWIZ *w = SV2MGWIZ(mg->mg_ptr);
int ret;
if (keylen == HEf_SVKEY) {
return ret;
}
-#endif /* MGf_COPY */
-#if 0 /* MGf_DUP */
+STATIC int vmg_svt_copy_noop(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key, VMG_SVT_COPY_KEYLEN_TYPE keylen) {
+ return 0;
+}
+
+/* ... dup magic ........................................................... */
+
+#if 0
STATIC int vmg_svt_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) {
return 0;
}
-#endif /* MGf_DUP */
+#define vmg_svt_dup_noop vmg_svt_dup
+#endif
+
+/* ... local magic ......................................................... */
#if MGf_LOCAL
+
STATIC int vmg_svt_local(pTHX_ SV *nsv, MAGIC *mg) {
- const MGWIZ *w = SV2MGWIZ(mg->mg_ptr);
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
+
return vmg_cb_call1(w->cb_local, w->opinfo, nsv, mg->mg_obj);
}
+
+#define vmg_svt_local_noop vmg_svt_default_noop
+
#endif /* MGf_LOCAL */
+/* ... uvar magic .......................................................... */
+
#if VMG_UVAR
-STATIC OP *vmg_pp_resetuvar(pTHX) {
- SvRMAGICAL_on(cSVOP_sv);
+
+STATIC OP *vmg_pp_reset_rmg(pTHX) {
+ SVOP *o = cSVOPx(PL_op);
+
+ SvRMAGICAL_on(o->op_sv);
+ o->op_sv = NULL;
+
return NORMAL;
}
STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
- struct ufuncs *uf;
- MAGIC *mg, *umg;
+ vmg_uvar_ud *ud;
+ MAGIC *mg, *umg, *moremagic;
SV *key = NULL, *newkey = NULL;
int tied = 0;
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;
+ ud = (vmg_uvar_ud *) umg->mg_ptr;
- if (uf[1].uf_val)
- uf[1].uf_val(aTHX_ action, sv);
- if (uf[1].uf_set)
- uf[1].uf_set(aTHX_ action, sv);
+ if (ud->old_uf.uf_val)
+ ud->old_uf.uf_val(aTHX_ action, sv);
+ if (ud->old_uf.uf_set)
+ ud->old_uf.uf_set(aTHX_ action, sv);
+
+ for (mg = SvMAGIC(sv); mg; mg = moremagic) {
+ const vmg_wizard *w;
+
+ /* mg may be freed later by the uvar call, so we need to fetch the next
+ * token before reaching that fateful point. */
+ moremagic = mg->mg_moremagic;
- action &= HV_FETCH_ISSTORE | HV_FETCH_ISEXISTS | HV_FETCH_LVALUE | HV_DELETE;
- for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
- const MGWIZ *w;
switch (mg->mg_type) {
case PERL_MAGIC_ext:
break;
default:
continue;
}
- if (mg->mg_private != SIG_WIZ) continue;
- w = SV2MGWIZ(mg->mg_ptr);
+
+ w = vmg_wizard_from_mg(mg);
+ if (!w)
+ continue;
+
switch (w->uvar) {
case 0:
continue;
if (!newkey)
newkey = key = umg->mg_obj = sv_mortalcopy(umg->mg_obj);
}
- switch (action) {
+
+ switch (action
+ & (HV_FETCH_ISSTORE|HV_FETCH_ISEXISTS|HV_FETCH_LVALUE|HV_DELETE)) {
case 0:
if (w->cb_fetch)
- vmg_cb_call2(w->cb_fetch, w->opinfo, sv, mg->mg_obj, key);
+ vmg_cb_call2(w->cb_fetch, w->opinfo | VMG_CB_CALL_GUARD, sv,
+ mg->mg_obj, key);
break;
case HV_FETCH_ISSTORE:
case HV_FETCH_LVALUE:
case (HV_FETCH_ISSTORE|HV_FETCH_LVALUE):
if (w->cb_store)
- vmg_cb_call2(w->cb_store, w->opinfo, sv, mg->mg_obj, key);
+ vmg_cb_call2(w->cb_store, w->opinfo | VMG_CB_CALL_GUARD, sv,
+ mg->mg_obj, key);
break;
case HV_FETCH_ISEXISTS:
if (w->cb_exists)
- vmg_cb_call2(w->cb_exists, w->opinfo, sv, mg->mg_obj, key);
+ vmg_cb_call2(w->cb_exists, w->opinfo | VMG_CB_CALL_GUARD, sv,
+ mg->mg_obj, key);
break;
case HV_DELETE:
if (w->cb_delete)
- vmg_cb_call2(w->cb_delete, w->opinfo, sv, mg->mg_obj, key);
+ vmg_cb_call2(w->cb_delete, w->opinfo | VMG_CB_CALL_GUARD, sv,
+ mg->mg_obj, key);
break;
}
}
- if (SvRMAGICAL(sv) && !tied) {
+ if (SvRMAGICAL(sv) && !tied && !(action & (HV_FETCH_ISSTORE|HV_DELETE))) {
/* 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 */
-
-/* ... Wizard destructor ................................................... */
-
-STATIC int vmg_wizard_free(pTHX_ SV *wiz, MAGIC *mg) {
- char buf[8];
- MGWIZ *w;
-
- if (PL_dirty) /* During global destruction, the context is already freed */
- return 0;
-
- w = SV2MGWIZ(wiz);
-#if VMG_MULTIPLICITY
- if (w->owner != aTHX)
- return 0;
- w->owner = NULL;
-#endif /* VMG_MULTIPLICITY */
+#if VMG_RESET_RMG_NEEDS_TRAMPOLINE
- {
dMY_CXT;
- if (hv_delete(MY_CXT.wizards, buf, sprintf(buf, "%u", w->sig), 0) != wiz)
- return 0;
- }
-
- /* Unmortalize the wizard to avoid it being freed in weird places. */
- if (SvTEMP(wiz) && !SvREFCNT(wiz)) {
- const I32 myfloor = PL_tmps_floor;
- I32 i;
- for (i = PL_tmps_ix; i > myfloor; --i) {
- if (PL_tmps_stack[i] == wiz)
- PL_tmps_stack[i] = NULL;
- }
- }
-
- if (w->cb_data) SvREFCNT_dec(SvRV(w->cb_data));
- if (w->cb_get) SvREFCNT_dec(SvRV(w->cb_get));
- if (w->cb_set) SvREFCNT_dec(SvRV(w->cb_set));
- if (w->cb_len) SvREFCNT_dec(SvRV(w->cb_len));
- if (w->cb_clear) SvREFCNT_dec(SvRV(w->cb_clear));
- if (w->cb_free) SvREFCNT_dec(SvRV(w->cb_free));
-#if MGf_COPY
- if (w->cb_copy) SvREFCNT_dec(SvRV(w->cb_copy));
-#endif /* MGf_COPY */
-#if 0 /* MGf_DUP */
- if (w->cb_dup) SvREFCNT_dec(SvRV(w->cb_dup));
-#endif /* MGf_DUP */
-#if MGf_LOCAL
- if (w->cb_local) SvREFCNT_dec(SvRV(w->cb_local));
-#endif /* MGf_LOCAL */
-#if VMG_UVAR
- if (w->cb_fetch) SvREFCNT_dec(SvRV(w->cb_fetch));
- if (w->cb_store) SvREFCNT_dec(SvRV(w->cb_store));
- if (w->cb_exists) SvREFCNT_dec(SvRV(w->cb_exists));
- if (w->cb_delete) SvREFCNT_dec(SvRV(w->cb_delete));
-#endif /* VMG_UVAR */
- Safefree(w->vtbl);
- Safefree(w);
+ PL_op = vmg_trampoline_bump(&MY_CXT.reset_rmg, sv, PL_op);
- return 0;
-}
+#else /* !VMG_RESET_RMG_NEEDS_TRAMPOLINE */
-STATIC MGVTBL vmg_wizard_vtbl = {
- NULL, /* get */
- NULL, /* set */
- NULL, /* len */
- NULL, /* clear */
- vmg_wizard_free, /* free */
-#if MGf_COPY
- NULL, /* copy */
-#endif /* MGf_COPY */
-#if MGf_DUP
- NULL, /* dup */
-#endif /* MGf_DUP */
-#if MGf_LOCAL
- NULL, /* local */
-#endif /* MGf_LOCAL */
-};
+ OP *nop = PL_op->op_next;
+ SVOP *svop = NULL;
-STATIC U16 vmg_sv2sig(pTHX_ SV *sv) {
-#define vmg_sv2sig(S) vmg_sv2sig(aTHX_ (S))
- IV sig;
-
- if (SvIOK(sv)) {
- sig = SvIVX(sv);
- } else if (SvNOK(sv)) {
- sig = SvNVX(sv);
- } else if ((SvPOK(sv) && grok_number(SvPVX(sv), SvCUR(sv), NULL))) {
- sig = SvIV(sv);
- } else {
- croak(vmg_invalid_sig);
- }
-
- if (sig < SIG_MIN || sig > SIG_MAX)
- croak(vmg_invalid_sig);
+ if (nop && nop->op_ppaddr == vmg_pp_reset_rmg) {
+ svop = (SVOP *) nop;
+ } else {
+ NewOp(1101, svop, 1, SVOP);
+ svop->op_type = OP_STUB;
+ svop->op_ppaddr = vmg_pp_reset_rmg;
+ svop->op_next = nop;
+ svop->op_flags = 0;
+ svop->op_private = 0;
- return sig;
-}
+ PL_op->op_next = (OP *) svop;
+ }
-STATIC U16 vmg_wizard_sig(pTHX_ SV *wiz) {
-#define vmg_wizard_sig(W) vmg_wizard_sig(aTHX_ (W))
- U16 sig;
+ svop->op_sv = sv;
- if (SvROK(wiz)) {
- sig = SV2MGWIZ(SvRV(wiz))->sig;
- } else if (SvOK(wiz)) {
- sig = vmg_sv2sig(wiz);
- } else {
- croak(vmg_invalid_wiz);
- }
+#endif /* VMG_RESET_RMG_NEEDS_TRAMPOLINE */
- {
- dMY_CXT;
- char buf[8];
- SV **old = hv_fetch(MY_CXT.wizards, buf, sprintf(buf, "%u", sig), 0);
- if (!(old && SV2MGWIZ(*old)))
- croak(vmg_invalid_wiz);
+ SvRMAGICAL_off(sv);
}
- return sig;
+ return 0;
}
-STATIC SV *vmg_wizard_wiz(pTHX_ SV *wiz) {
-#define vmg_wizard_wiz(W) vmg_wizard_wiz(aTHX_ (W))
- U16 sig;
+#endif /* VMG_UVAR */
- 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);
- }
+/* --- Macros for the XS section ------------------------------------------- */
- {
- dMY_CXT;
- char buf[8];
- SV **old = hv_fetch(MY_CXT.wizards, buf, sprintf(buf, "%u", sig), 0);
- if (!(old && SV2MGWIZ(*old)))
- croak(vmg_invalid_wiz);
+#ifdef CvISXSUB
+# define VMG_CVOK(C) \
+ ((CvISXSUB(C) ? (void *) CvXSUB(C) : (void *) CvROOT(C)) ? 1 : 0)
+#else
+# define VMG_CVOK(C) (CvROOT(C) || CvXSUB(C))
+#endif
- return *old;
- }
+#define VMG_CBOK(S) ((SvTYPE(S) == SVt_PVCV) ? VMG_CVOK(S) : SvOK(S))
+
+#define VMG_SET_CB(S, N) { \
+ SV *cb = (S); \
+ if (SvOK(cb) && SvROK(cb)) { \
+ cb = SvRV(cb); \
+ if (VMG_CBOK(cb)) \
+ SvREFCNT_inc_simple_void(cb); \
+ else \
+ cb = NULL; \
+ } else { \
+ cb = NULL; \
+ } \
+ w->cb_ ## N = cb; \
}
-#define VMG_SET_CB(S, N) \
- cb = (S); \
- w->cb_ ## N = (SvOK(cb) && SvROK(cb)) ? newRV_inc(SvRV(cb)) : NULL;
-
-#define VMG_SET_SVT_CB(S, N) \
- cb = (S); \
- if (SvOK(cb) && SvROK(cb)) { \
- t->svt_ ## N = vmg_svt_ ## N; \
- w->cb_ ## N = newRV_inc(SvRV(cb)); \
- } else { \
- t->svt_ ## N = 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;
- z->opinfo = w->opinfo;
-
- return z;
+#define VMG_SET_SVT_CB(S, N) { \
+ SV *cb = (S); \
+ if (SvOK(cb) && SvROK(cb)) { \
+ cb = SvRV(cb); \
+ if (VMG_CBOK(cb)) { \
+ t->svt_ ## N = vmg_svt_ ## N; \
+ SvREFCNT_inc_simple_void(cb); \
+ } else { \
+ t->svt_ ## N = vmg_svt_ ## N ## _noop; \
+ cb = NULL; \
+ } \
+ } else { \
+ t->svt_ ## N = NULL; \
+ cb = NULL; \
+ } \
+ w->cb_ ## N = cb; \
}
-#endif /* VMG_THREADSAFE */
-
/* --- XS ------------------------------------------------------------------ */
MODULE = Variable::Magic PACKAGE = Variable::Magic
BOOT:
{
HV *stash;
+ int c;
+
MY_CXT_INIT;
- MY_CXT.wizards = newHV();
- hv_iterinit(MY_CXT.wizards); /* Allocate iterator */
- MY_CXT.b__op_stashes[0] = NULL;
+ for (c = OPc_NULL; c < OPc_MAX; ++c)
+ MY_CXT.b__op_stashes[c] = NULL;
+
+ MY_CXT.depth = 0;
+ MY_CXT.freed_tokens = NULL;
+
+ /* XS doesn't like a blank line here */
+#if VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE
+ vmg_trampoline_init(&MY_CXT.propagate_errsv, vmg_pp_propagate_errsv);
+#endif
+#if VMG_RESET_RMG_NEEDS_TRAMPOLINE
+ vmg_trampoline_init(&MY_CXT.reset_rmg, vmg_pp_reset_rmg);
+#endif
+
+ /* XS doesn't like a blank line here */
#if VMG_THREADSAFE
+ MUTEX_INIT(&vmg_vtable_refcount_mutex);
MUTEX_INIT(&vmg_op_name_init_mutex);
#endif
stash = gv_stashpv(__PACKAGE__, 1);
- newCONSTSUB(stash, "SIG_MIN", newSVuv(SIG_MIN));
- newCONSTSUB(stash, "SIG_MAX", newSVuv(SIG_MAX));
- newCONSTSUB(stash, "SIG_NBR", newSVuv(SIG_NBR));
newCONSTSUB(stash, "MGf_COPY", newSVuv(MGf_COPY));
newCONSTSUB(stash, "MGf_DUP", newSVuv(MGf_DUP));
newCONSTSUB(stash, "MGf_LOCAL", newSVuv(MGf_LOCAL));
newCONSTSUB(stash, "VMG_UVAR", newSVuv(VMG_UVAR));
+ newCONSTSUB(stash, "VMG_COMPAT_SCALAR_LENGTH_NOLEN",
+ newSVuv(VMG_COMPAT_SCALAR_LENGTH_NOLEN));
+ newCONSTSUB(stash, "VMG_COMPAT_SCALAR_NOLEN",
+ newSVuv(VMG_COMPAT_SCALAR_NOLEN));
newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN",
newSVuv(VMG_COMPAT_ARRAY_PUSH_NOLEN));
newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_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_COMPAT_HASH_DELETE_NOUVAR_VOID",
+ newSVuv(VMG_COMPAT_HASH_DELETE_NOUVAR_VOID));
+ newCONSTSUB(stash, "VMG_COMPAT_GLOB_GET", newSVuv(VMG_COMPAT_GLOB_GET));
newCONSTSUB(stash, "VMG_PERL_PATCHLEVEL", newSVuv(VMG_PERL_PATCHLEVEL));
newCONSTSUB(stash, "VMG_THREADSAFE", newSVuv(VMG_THREADSAFE));
newCONSTSUB(stash, "VMG_FORKSAFE", newSVuv(VMG_FORKSAFE));
CLONE(...)
PROTOTYPE: DISABLE
PREINIT:
- HV *hv;
U32 had_b__op_stash = 0;
- opclass c;
-CODE:
+ I32 old_depth;
+ int c;
+PPCODE:
{
- HE *key;
dMY_CXT;
- hv = newHV();
- hv_iterinit(hv); /* Allocate iterator */
- hv_iterinit(MY_CXT.wizards);
- while ((key = hv_iternext(MY_CXT.wizards))) {
- STRLEN len;
- char *sig = HePV(key, len);
- SV *sv;
- const MGWIZ *w = SV2MGWIZ(HeVAL(key));
- if (w) {
- MAGIC *mg;
- w = vmg_wizard_clone(w);
- sv = MGWIZ2SV(w);
- mg = sv_magicext(sv, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, 0);
- mg->mg_private = SIG_WZO;
- } else {
- sv = MGWIZ2SV(NULL);
- }
- SvREADONLY_on(sv);
- if (!hv_store(hv, sig, len, sv, HeHASH(key))) croak("%s during CLONE", vmg_globstorefail);
- }
- for (c = 0; c < OPc_MAX; ++c) {
+ for (c = OPc_NULL; c < OPc_MAX; ++c) {
if (MY_CXT.b__op_stashes[c])
had_b__op_stash |= (((U32) 1) << c);
}
+ old_depth = MY_CXT.depth;
}
{
MY_CXT_CLONE;
- MY_CXT.wizards = hv;
- for (c = 0; c < OPc_MAX; ++c) {
+ for (c = OPc_NULL; c < OPc_MAX; ++c) {
MY_CXT.b__op_stashes[c] = (had_b__op_stash & (((U32) 1) << c))
? gv_stashpv(vmg_opclassnames[c], 1) : NULL;
}
+ MY_CXT.depth = old_depth;
+ MY_CXT.freed_tokens = NULL;
}
+ XSRETURN(0);
#endif /* VMG_THREADSAFE */
SV *_wizard(...)
PROTOTYPE: DISABLE
PREINIT:
- I32 i = 0;
- U16 sig;
- char buf[8];
- MGWIZ *w;
+ vmg_wizard *w;
MGVTBL *t;
- MAGIC *mg;
- SV *sv;
- SV *svsig;
- SV *cb;
+ SV *op_info, *copy_key;
+ I32 i = 0;
CODE:
- dMY_CXT;
-
- if (items != 8
-#if MGf_COPY
- + 1
-#endif /* MGf_COPY */
-#if MGf_DUP
- + 1
-#endif /* MGf_DUP */
+ if (items != 9
#if MGf_LOCAL
+ 1
#endif /* MGf_LOCAL */
#endif /* VMG_UVAR */
) { croak(vmg_wrongargnum); }
- svsig = ST(i++);
- if (SvOK(svsig)) {
- SV **old;
- sig = vmg_sv2sig(svsig);
- old = hv_fetch(MY_CXT.wizards, buf, sprintf(buf, "%u", sig), 0);
- if (old && SV2MGWIZ(*old)) {
- ST(0) = sv_2mortal(newRV_inc(*old));
- XSRETURN(1);
- }
- } else {
- sig = vmg_gensig();
- }
-
- Newx(t, 1, MGVTBL);
- Newx(w, 1, MGWIZ);
+ op_info = ST(i++);
+ w = vmg_wizard_alloc(SvOK(op_info) ? SvUV(op_info) : 0);
+ t = vmg_vtable_vtbl(w->vtable);
VMG_SET_CB(ST(i++), data);
- cb = ST(i++);
- w->opinfo = SvOK(cb) ? SvUV(cb) : 0;
- if (w->opinfo)
- vmg_op_info_init(w->opinfo);
+
VMG_SET_SVT_CB(ST(i++), get);
VMG_SET_SVT_CB(ST(i++), set);
VMG_SET_SVT_CB(ST(i++), len);
VMG_SET_SVT_CB(ST(i++), clear);
VMG_SET_SVT_CB(ST(i++), free);
-#if MGf_COPY
VMG_SET_SVT_CB(ST(i++), copy);
-#endif /* MGf_COPY */
-#if MGf_DUP
/* VMG_SET_SVT_CB(ST(i++), dup); */
i++;
t->svt_dup = NULL;
w->cb_dup = NULL;
-#endif /* MGf_DUP */
#if MGf_LOCAL
VMG_SET_SVT_CB(ST(i++), local);
#endif /* MGf_LOCAL */
VMG_SET_CB(ST(i++), store);
VMG_SET_CB(ST(i++), exists);
VMG_SET_CB(ST(i++), delete);
- cb = ST(i++);
+
+ copy_key = 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;
+ w->uvar = SvTRUE(copy_key) ? 2 : 1;
#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, 0);
- mg->mg_private = SIG_WZO;
- SvREADONLY_on(sv);
- if (!hv_store(MY_CXT.wizards, buf, sprintf(buf, "%u", sig), sv, 0)) croak(vmg_globstorefail);
-
- RETVAL = newRV_noinc(sv);
-OUTPUT:
- RETVAL
-
-SV *gensig()
-PROTOTYPE:
-PREINIT:
- U16 sig;
- char buf[8];
-CODE:
- dMY_CXT;
- sig = vmg_gensig();
- if (!hv_store(MY_CXT.wizards, buf, sprintf(buf, "%u", sig), MGWIZ2SV(NULL), 0)) croak(vmg_globstorefail);
- RETVAL = newSVuv(sig);
-OUTPUT:
- RETVAL
-
-SV *getsig(SV *wiz)
-PROTOTYPE: $
-PREINIT:
- U16 sig;
-CODE:
- sig = vmg_wizard_sig(wiz);
- RETVAL = newSVuv(sig);
+ RETVAL = newRV_noinc(vmg_wizard_sv_new(w));
OUTPUT:
RETVAL
SV *cast(SV *sv, SV *wiz, ...)
PROTOTYPE: \[$@%&*]$@
PREINIT:
- AV *args = NULL;
- SV *ret;
+ const vmg_wizard *w = NULL;
+ SV **args = NULL;
+ I32 i = 0;
CODE:
- wiz = vmg_wizard_wiz(wiz);
if (items > 2) {
- I32 i;
- args = newAV();
- av_fill(args, items - 2);
- for (i = 2; i < items; ++i) {
- SV *arg = ST(i);
- SvREFCNT_inc(arg);
- if (av_store(args, i - 2, arg) == NULL) croak(vmg_argstorefailed);
- }
+ i = items - 2;
+ args = &ST(2);
+ }
+ if (SvROK(wiz)) {
+ wiz = SvRV_const(wiz);
+ w = vmg_wizard_from_sv(wiz);
}
- ret = newSVuv(vmg_cast(SvRV(sv), wiz, args));
- SvREFCNT_dec(args);
- RETVAL = ret;
+ if (!w)
+ croak(vmg_invalid_wiz);
+ RETVAL = newSVuv(vmg_cast(SvRV(sv), w, wiz, args, i));
OUTPUT:
RETVAL
getdata(SV *sv, SV *wiz)
PROTOTYPE: \[$@%&*]$
PREINIT:
+ const vmg_wizard *w = NULL;
SV *data;
- U16 sig;
PPCODE:
- sig = vmg_wizard_sig(wiz);
- data = vmg_data_get(SvRV(sv), sig);
+ if (SvROK(wiz))
+ w = vmg_wizard_from_sv(SvRV_const(wiz));
+ if (!w)
+ croak(vmg_invalid_wiz);
+ data = vmg_data_get(SvRV(sv), w);
if (!data)
XSRETURN_EMPTY;
ST(0) = data;
SV *dispell(SV *sv, SV *wiz)
PROTOTYPE: \[$@%&*]$
PREINIT:
- U16 sig;
+ const vmg_wizard *w = NULL;
CODE:
- sig = vmg_wizard_sig(wiz);
- RETVAL = newSVuv(vmg_dispell(SvRV(sv), sig));
+ if (SvROK(wiz))
+ w = vmg_wizard_from_sv(SvRV_const(wiz));
+ if (!w)
+ croak(vmg_invalid_wiz);
+ RETVAL = newSVuv(vmg_dispell(SvRV(sv), w));
OUTPUT:
RETVAL
projects / perl / modules / Variable-Magic.git / blobdiff