X-Git-Url: http://git.vpit.fr/?a=blobdiff_plain;f=Magic.xs;h=3fb9739614332542a19485443cc7d737c4a6fa50;hb=75e0226fc114601c5e10d253d55e94e201249151;hp=76e88216920933deb17c06986a20112e7060d73f;hpb=ed1f29a02e9894bb90bb4f3f3d42d7fe0fd3e545;p=perl%2Fmodules%2FVariable-Magic.git

diff --git a/Magic.xs b/Magic.xs
index 76e8821..3fb9739 100644
--- a/Magic.xs
+++ b/Magic.xs
@@ -12,6 +12,13 @@
 
 #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
@@ -36,6 +43,11 @@
 # define dNOOP
 #endif
 
+/* Safe unless stated otherwise in Makefile.PL */
+#ifndef VMG_FORKSAFE
+# define VMG_FORKSAFE 1
+#endif
+
 #ifndef VMG_MULTIPLICITY
 # if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
 #  define VMG_MULTIPLICITY 1
@@ -70,15 +82,37 @@
 # define MY_CXT_CLONE NOOP
 #endif
 
+#if 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
+
 #if VMG_THREADSAFE
 
 STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
 #define vmg_clone(P, O) vmg_clone(aTHX_ (P), (O))
+ SV *dupsv;
+
+#if VMG_HAS_PERL(5, 13, 2)
+ CLONE_PARAMS *param = Perl_clone_params_new(owner, aTHX);
+
+ dupsv = sv_dup(sv, param);
+
+ Perl_clone_params_del(param);
+#else
  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, &param);
+
+ dupsv = sv_dup(sv, &param);
+#endif
+
+ return SvREFCNT_inc(dupsv);
 }
 
 #endif /* VMG_THREADSAFE */
@@ -89,32 +123,28 @@ STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
 # 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 mPUSHi
-# define mPUSHi(I) PUSHs(sv_2mortal(newSViv(I)))
+#ifndef SvRV_const
+# define SvRV_const(sv) SvRV((SV *) sv)
 #endif
 
-#ifndef PERL_MAGIC_ext
-# define PERL_MAGIC_ext '~'
+#ifndef SvREFCNT_inc_simple_void
+# define SvREFCNT_inc_simple_void(sv) ((void) SvREFCNT_inc(sv))
 #endif
 
-#ifndef PERL_MAGIC_tied
-# define PERL_MAGIC_tied 'P'
+#ifndef mPUSHu
+# define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U)))
 #endif
 
-#ifndef MGf_COPY
-# define MGf_COPY 0
+#ifndef PERL_MAGIC_ext
+# define PERL_MAGIC_ext '~'
 #endif
 
-#ifndef MGf_DUP
-# define MGf_DUP 0
+#ifndef PERL_MAGIC_tied
+# define PERL_MAGIC_tied 'P'
 #endif
 
 #ifndef MGf_LOCAL
@@ -125,34 +155,38 @@ STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
 # 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)
+/* 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
 
-/* 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
+/* 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
+#  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
+#else
+# ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN
 #  define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
 # endif
+# ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID
+#  define VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID 0
+# endif
 #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
@@ -165,100 +199,602 @@ STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
 # define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
 #endif
 
-#if VMG_HAS_PERL_MAINT(5, 11, 0, 32969)
+#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_UVAR
+#if VMG_HAS_PERL(5, 13, 2)
+# define VMG_COMPAT_GLOB_GET 1
+#else
+# define VMG_COMPAT_GLOB_GET 0
+#endif
+
+/* ... 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
 
-/* 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. */
+STATIC void vmg_mg_magical(SV *sv) {
+ const MAGIC *mg;
+
+ 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
 
-/* --- Context-safe global data -------------------------------------------- */
+/* ... Safe version of call_sv() ........................................... */
 
-#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
+#define VMG_SAVE_LAST_CX (!VMG_HAS_PERL(5, 8, 4) || VMG_HAS_PERL(5, 9, 5))
 
-typedef HV * my_cxt_t;
+STATIC I32 vmg_call_sv(pTHX_ SV *sv, I32 flags, I32 destructor) {
+#define vmg_call_sv(S, F, D) vmg_call_sv(aTHX_ (S), (F), (D))
+ I32 ret, cxix = 0, in_eval = 0;
+#if VMG_SAVE_LAST_CX
+ PERL_CONTEXT saved_cx;
+#endif
+ SV *old_err = NULL;
 
-START_MY_CXT
+ if (SvTRUE(ERRSV)) {
+  old_err = ERRSV;
+  ERRSV   = newSV(0);
+ }
+
+ if (cxstack_ix < cxstack_max) {
+  cxix = cxstack_ix + 1;
+  if (destructor && CxTYPE(cxstack + cxix) == CXt_EVAL)
+   in_eval = 1;
+ }
+
+#if VMG_SAVE_LAST_CX
+ /* 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];
+#endif
+
+ ret = call_sv(sv, flags | G_EVAL);
+
+#if VMG_SAVE_LAST_CX
+ cxstack[cxix] = saved_cx;
+#endif
+
+ 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 (!in_eval)
+    croak(NULL);
+ } else {
+  if (old_err) {
+   SvREFCNT_dec(ERRSV);
+   ERRSV = old_err;
+  }
+ }
+
+ return ret;
+}
+
+/* --- Stolen chunk of B --------------------------------------------------- */
+
+typedef enum {
+ OPc_NULL   = 0,
+ OPc_BASEOP = 1,
+ OPc_UNOP   = 2,
+ OPc_BINOP  = 3,
+ OPc_LOGOP  = 4,
+ OPc_LISTOP = 5,
+ OPc_PMOP   = 6,
+ OPc_SVOP   = 7,
+ OPc_PADOP  = 8,
+ OPc_PVOP   = 9,
+ OPc_LOOP   = 10,
+ OPc_COP    = 11,
+ OPc_MAX    = 12
+} opclass;
+
+STATIC const char *const vmg_opclassnames[] = {
+ "B::NULL",
+ "B::OP",
+ "B::UNOP",
+ "B::BINOP",
+ "B::LOGOP",
+ "B::LISTOP",
+ "B::PMOP",
+ "B::SVOP",
+ "B::PADOP",
+ "B::PVOP",
+ "B::LOOP",
+ "B::COP"
+};
+
+STATIC opclass vmg_opclass(const OP *o) {
+#if 0
+ if (!o)
+  return OPc_NULL;
+#endif
+
+ if (o->op_type == 0)
+  return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;
+
+ if (o->op_type == OP_SASSIGN)
+  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_SVOP;
+#endif
+ }
+
+#ifdef USE_ITHREADS
+ if (o->op_type == OP_GV || o->op_type == OP_GVSV || o->op_type == OP_RCATLINE)
+  return OPc_PADOP;
+#endif
+
+ switch (PL_opargs[o->op_type] & OA_CLASS_MASK) {
+  case OA_BASEOP:
+   return OPc_BASEOP;
+  case OA_UNOP:
+   return OPc_UNOP;
+  case OA_BINOP:
+   return OPc_BINOP;
+  case OA_LOGOP:
+   return OPc_LOGOP;
+  case OA_LISTOP:
+   return OPc_LISTOP;
+  case OA_PMOP:
+   return OPc_PMOP;
+  case OA_SVOP:
+   return OPc_SVOP;
+  case OA_PADOP:
+   return OPc_PADOP;
+  case OA_PVOP_OR_SVOP:
+   return (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF)) ? OPc_SVOP : OPc_PVOP;
+  case OA_LOOP:
+   return OPc_LOOP;
+  case OA_COP:
+   return OPc_COP;
+  case OA_BASEOP_OR_UNOP:
+   return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;
+  case OA_FILESTATOP:
+   return ((o->op_flags & OPf_KIDS) ? OPc_UNOP :
+#ifdef USE_ITHREADS
+           (o->op_flags & OPf_REF) ? OPc_PADOP : OPc_BASEOP);
+#else
+           (o->op_flags & OPf_REF) ? OPc_SVOP : OPc_BASEOP);
+#endif
+  case OA_LOOPEXOP:
+   if (o->op_flags & OPf_STACKED)
+    return OPc_UNOP;
+   else if (o->op_flags & OPf_SPECIAL)
+    return OPc_BASEOP;
+   else
+    return OPc_PVOP;
+ }
+
+ 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";
 
 /* --- Signatures ---------------------------------------------------------- */
 
-#define SIG_MIN ((U16) (1u << 8))
-#define SIG_MAX ((U16) ((1u << 16) - 1))
-#define SIG_NBR (SIG_MAX - SIG_MIN + 1)
-#define SIG_WIZ ((U16) ((1u << 8) - 1))
+#define SIG_WZO ((U16) (0x3891))
+#define SIG_WIZ ((U16) (0x3892))
 
-/* ... Generate signatures ................................................. */
+/* --- <vmg_vtable> structure ---------------------------------------------- */
 
-STATIC U16 vmg_gensig(pTHX) {
-#define vmg_gensig() vmg_gensig(aTHX)
- U16 sig;
- char buf[8];
- dMY_CXT;
+#if VMG_THREADSAFE
+
+typedef struct {
+ MGVTBL *vtbl;
+ U32     refcount;
+} vmg_vtable;
+
+STATIC vmg_vtable *vmg_vtable_alloc(pTHX) {
+#define vmg_vtable_alloc() vmg_vtable_alloc(aTHX)
+ vmg_vtable *t;
+
+ t = VOID2(vmg_vtable *, PerlMemShared_malloc(sizeof *t));
+
+ t->vtbl     = VOID2(MGVTBL *, PerlMemShared_malloc(sizeof *t->vtbl));
+ t->refcount = 1;
+
+ return t;
+}
+
+#define vmg_vtable_vtbl(T) (T)->vtbl
+
+#if VMG_THREADSAFE
+STATIC perl_mutex vmg_vtable_refcount_mutex;
+#endif
+
+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 */
 
- do {
-  sig = SIG_NBR * Drand01() + SIG_MIN;
- } while (hv_exists(MY_CXT, buf, sprintf(buf, "%u", sig)));
+typedef MGVTBL vmg_vtable;
 
- return sig;
+STATIC vmg_vtable *vmg_vtable_alloc(pTHX) {
+#define vmg_vtable_alloc() vmg_vtable_alloc(aTHX)
+ vmg_vtable *t;
+
+ Newx(t, 1, vmg_vtable);
+
+ return t;
 }
 
+#define vmg_vtable_vtbl(T) ((MGVTBL *) (T))
+
+#define vmg_vtable_free(T) Safefree(T)
+
+#endif /* !VMG_THREADSAFE */
+
 /* --- MGWIZ structure ----------------------------------------------------- */
 
 typedef struct {
- MGVTBL *vtbl;
- U16 sig;
- U16 uvar;
+ vmg_vtable *vtable;
+
+ 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;
 
-#define MGWIZ2SV(W) (newSVuv(PTR2UV(W)))
-#define SV2MGWIZ(S) (INT2PTR(MGWIZ*, SvUVX((SV *) (S))))
+STATIC void vmg_op_info_init(pTHX_ unsigned int opinfo);
+
+STATIC MGWIZ *vmg_mgwiz_alloc(pTHX_ UV opinfo) {
+#define vmg_mgwiz_alloc(O) vmg_mgwiz_alloc(aTHX_ (O))
+ MGWIZ  *w;
+ MGVTBL *t;
+
+ Newx(w, 1, MGWIZ);
+
+ w->uvar   = 0;
+ w->opinfo = (U8) ((opinfo < 255) ? opinfo : 255);
+ if (w->opinfo)
+  vmg_op_info_init(aTHX_ w->opinfo);
+
+ w->vtable = vmg_vtable_alloc();
+
+ return w;
+}
+
+STATIC void vmg_mgwiz_free(pTHX_ MGWIZ *w) {
+#define vmg_mgwiz_free(W) vmg_mgwiz_free(aTHX_ (W))
+ if (!w)
+  return;
+
+ /* We reach this point in dirty state when ptable_free() is called from the
+  * atexit cleanup callback, and that the global table still holds a live
+  * wizard. This happens before all the SV bodies are freed, so all the wizard
+  * callbacks are still alive (as they are referenced by the undead wizard).
+  * Hence it is safe to decrement their refcount. Later on, the wizard free
+  * callback itself will trigger when the wizard body is reaped, but it will
+  * be skipped as it guards against dirty state - which is good since nothing
+  * has to be done anymore at that point. */
+
+ 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
+#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 */
+
+ vmg_vtable_free(w->vtable);
+ Safefree(w);
+
+ return;
+}
+
+#if VMG_THREADSAFE
+
+#define VMG_CLONE_CB(N) \
+ z->cb_ ## N = (w->cb_ ## N) ? vmg_clone(w->cb_ ## N, w->owner) \
+                             : NULL;
+
+STATIC MGWIZ *vmg_mgwiz_clone(pTHX_ const MGWIZ *w) {
+#define vmg_mgwiz_clone(W) vmg_mgwiz_clone(aTHX_ (W))
+ MGWIZ *z;
+
+ if (!w)
+  return NULL;
+
+ Newx(z, 1, MGWIZ);
+
+ 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
+ VMG_CLONE_CB(fetch);
+ VMG_CLONE_CB(store);
+ VMG_CLONE_CB(exists);
+ VMG_CLONE_CB(delete);
+#endif /* VMG_UVAR */
+
+ z->owner = aTHX;
+
+ return z;
+}
+
+#endif /* VMG_THREADSAFE */
+
+/* --- Context-safe global data -------------------------------------------- */
+
+#if VMG_THREADSAFE
+
+#define PTABLE_NAME        ptable
+#define PTABLE_VAL_FREE(V) vmg_mgwiz_free(VOID2(MGWIZ *, (V)))
+
+#define pPTBL  pTHX
+#define pPTBL_ pTHX_
+#define aPTBL  aTHX
+#define aPTBL_ aTHX_
+
+#include "ptable.h"
+
+#define ptable_store(T, K, V) ptable_store(aTHX_ (T), (K), (V))
+#define ptable_clear(T)       ptable_clear(aTHX_ (T))
+#define ptable_free(T)        ptable_free(aTHX_ (T))
+
+#endif /* VMG_THREADSAFE */
+
+#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
+
+typedef struct {
+#if VMG_THREADSAFE
+ ptable *wizards;
+ tTHX    owner;
+#endif
+ HV     *b__op_stashes[OPc_MAX];
+} my_cxt_t;
+
+START_MY_CXT
+
+#if VMG_THREADSAFE
+
+STATIC void vmg_ptable_clone(pTHX_ ptable_ent *ent, void *ud_) {
+ my_cxt_t *ud = VOID2(my_cxt_t *, ud_);
+ MGWIZ *w;
+
+ if (ud->owner == aTHX)
+  return;
+
+ w = vmg_mgwiz_clone(VOID2(MGWIZ *, ent->val));
+ if (w)
+  ptable_store(ud->wizards, ent->key, w);
+}
+
+#endif /* VMG_THREADSAFE */
+
+/* --- Wizard objects ------------------------------------------------------ */
+
+STATIC int vmg_wizard_free(pTHX_ SV *sv, MAGIC *mg);
+
+STATIC MGVTBL vmg_wizard_vtbl = {
+ NULL,            /* get */
+ NULL,            /* set */
+ NULL,            /* len */
+ NULL,            /* clear */
+ vmg_wizard_free, /* free */
+ NULL,            /* copy */
+ NULL,            /* dup */
+#if MGf_LOCAL
+ NULL,            /* local */
+#endif /* MGf_LOCAL */
+};
+
+/* ... Wizard constructor .................................................. */
+
+STATIC SV *vmg_wizard_new(pTHX_ const MGWIZ *w) {
+#define vmg_wizard_new(W) vmg_wizard_new(aTHX_ (W))
+ SV *wiz = newSVuv(PTR2IV(w));
+
+ if (w) {
+  MAGIC *mg = sv_magicext(wiz, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, 0);
+  mg->mg_private = SIG_WZO;
+ }
+ SvREADONLY_on(wiz);
+
+ return wiz;
+}
+
+STATIC const SV *vmg_wizard_validate(pTHX_ const SV *wiz) {
+#define vmg_wizard_validate(W) vmg_wizard_validate(aTHX_ (W))
+ if (SvROK(wiz)) {
+  wiz = SvRV_const(wiz);
+  if (SvIOK(wiz))
+   return wiz;
+ }
+
+ croak(vmg_invalid_wiz);
+ /* Not reached */
+ return NULL;
+}
+
+#define vmg_wizard_id(W)         SvIVX((const SV *) (W))
+#define vmg_wizard_main_mgwiz(W) INT2PTR(const MGWIZ *, vmg_wizard_id(W))
+
+/* ... Wizard destructor ................................................... */
+
+STATIC int vmg_wizard_free(pTHX_ SV *sv, MAGIC *mg) {
+ MGWIZ *w;
+
+ if (PL_dirty) /* During global destruction, the context is already freed */
+  return 0;
+
+ w = (MGWIZ *) vmg_wizard_main_mgwiz(sv);
+
+#if VMG_THREADSAFE
+ {
+  dMY_CXT;
+  ptable_store(MY_CXT.wizards, w, NULL);
+ }
+#else /* VMG_THREADSAFE */
+ vmg_mgwiz_free(w);
+#endif /* !VMG_THREADSAFE */
+
+ return 0;
+}
+
+#if VMG_THREADSAFE
+
+STATIC const MGWIZ *vmg_wizard_mgwiz(pTHX_ const SV *wiz) {
+#define vmg_wizard_mgwiz(W) vmg_wizard_mgwiz(aTHX_ ((const SV *) (W)))
+ const MGWIZ *w;
+
+ w = vmg_wizard_main_mgwiz(wiz);
+ if (w->owner == aTHX)
+  return w;
+
+ {
+  dMY_CXT;
+  return VOID2(const MGWIZ *, ptable_fetch(MY_CXT.wizards, w));
+ }
+}
+
+#else /* VMG_THREADSAFE */
+
+#define vmg_wizard_mgwiz(W) vmg_wizard_main_mgwiz(W)
+
+#endif /* !VMG_THREADSAFE */
+
+/* --- User-level functions implementation --------------------------------- */
+
+STATIC const MAGIC *vmg_find(const SV *sv, const SV *wiz) {
+ const MAGIC *mg, *moremagic;
+ IV wid;
+
+ if (SvTYPE(sv) < SVt_PVMG)
+  return NULL;
+
+ wid = vmg_wizard_id(wiz);
+ for (mg = SvMAGIC(sv); mg; mg = moremagic) {
+  moremagic = mg->mg_moremagic;
+  if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
+   IV zid = vmg_wizard_id(mg->mg_ptr);
+   if (zid == wid)
+    return mg;
+  }
+ }
+
+ return NULL;
+}
 
 /* ... Construct private data .............................................. */
 
-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))
+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;
- I32 i, alen = (args == NULL) ? 0 : av_len(args);
 
  dSP;
 
@@ -266,20 +802,20 @@ STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, AV *args) {
  SAVETMPS;
 
  PUSHMARK(SP);
- EXTEND(SP, alen + 1);
+ EXTEND(SP, items + 1);
  PUSHs(sv_2mortal(newRV_inc(sv)));
- for (i = 0; i < alen; ++i)
-  PUSHs(*av_fetch(args, i, 0));
+ for (i = 0; i < items; ++i)
+  PUSHs(args[i]);
  PUTBACK;
 
- call_sv(ctor, G_SCALAR);
+ vmg_call_sv(ctor, G_SCALAR, 0);
 
  SPAGAIN;
  nsv = POPs;
 #if VMG_HAS_PERL(5, 8, 3)
- SvREFCNT_inc(nsv);    /* Or it will be destroyed in FREETMPS */
+ SvREFCNT_inc_simple_void(nsv); /* Or it will be destroyed in FREETMPS */
 #else
- nsv = sv_newref(nsv); /* Workaround some bug in SvREFCNT_inc() */
+ nsv = sv_newref(nsv);          /* Workaround some bug in SvREFCNT_inc() */
 #endif
  PUTBACK;
 
@@ -289,19 +825,11 @@ STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, AV *args) {
  return nsv;
 }
 
-STATIC SV *vmg_data_get(SV *sv, U16 sig) {
- MAGIC *mg, *moremagic;
-
- 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)) { break; }
-  }
-  if (mg) { return mg->mg_obj; }
- }
-
- return NULL;
-} 
+STATIC SV *vmg_data_get(pTHX_ SV *sv, const SV *wiz) {
+#define vmg_data_get(S, W) vmg_data_get(aTHX_ (S), (W))
+ const MAGIC *mg = vmg_find(sv, wiz);
+ return mg ? mg->mg_obj : NULL;
+}
 
 /* ... Magic cast/dispell .................................................. */
 
@@ -320,34 +848,31 @@ STATIC void vmg_uvar_del(SV *sv, MAGIC *prevmagic, MAGIC *mg, MAGIC *moremagic)
 }
 #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);
+STATIC UV vmg_cast(pTHX_ SV *sv, const SV *wiz, SV **args, I32 items) {
+#define vmg_cast(S, W, A, I) vmg_cast(aTHX_ (S), (W), (A), (I))
+ MAGIC       *mg;
+ SV          *data;
+ const MGWIZ *w;
+ U32          oldgmg;
 
- w = SV2MGWIZ(wiz);
+ if (vmg_find(sv, wiz))
+  return 1;
 
- 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 == w->sig)) { break; }
-  }
-  if (mg) { return 1; }
- }
+ w = vmg_wizard_mgwiz(wiz);
+ oldgmg = SvGMAGICAL(sv);
 
- 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;
-#if MGf_COPY
+ data = (w->cb_data) ? vmg_data_new(w->cb_data, sv, args, items) : NULL;
+ /* sv_magicext() calls mg_magical and increments data's refcount */
+ mg   = sv_magicext(sv, data, PERL_MAGIC_ext, vmg_vtable_vtbl(w->vtable),
+                              (const char *) wiz, HEf_SVKEY);
+ SvREFCNT_dec(data);
+ mg->mg_private = SIG_WIZ;
  if (w->cb_copy)
   mg->mg_flags |= MGf_COPY;
-#endif /* MGf_COPY */
-#if 0 /* MGf_DUP */
+#if 0
  if (w->cb_dup)
   mg->mg_flags |= MGf_DUP;
-#endif /* MGf_DUP */
+#endif
 #if MGf_LOCAL
  if (w->cb_local)
   mg->mg_flags |= MGf_LOCAL;
@@ -367,7 +892,7 @@ STATIC UV vmg_cast(pTHX_ SV *sv, SV *wiz, AV *args) {
 
 #if VMG_UVAR
  if (w->uvar) {
-  MAGIC *prevmagic;
+  MAGIC *prevmagic, *moremagic = NULL;
   struct ufuncs uf[2];
 
   uf[0].uf_val   = vmg_svt_val;
@@ -380,7 +905,8 @@ STATIC UV vmg_cast(pTHX_ SV *sv, SV *wiz, AV *args) {
   /* 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->mg_type == PERL_MAGIC_uvar)
+    break;
   }
 
   if (mg) { /* Found another uvar magic. */
@@ -395,7 +921,8 @@ STATIC UV vmg_cast(pTHX_ SV *sv, SV *wiz, AV *args) {
    }
   }
 
-  vmg_sv_magicuvar(sv, (const char *) &uf, sizeof(uf));
+  sv_magic(sv, NULL, PERL_MAGIC_uvar, (const char *) &uf, sizeof(uf));
+  vmg_mg_magical(sv);
   /* Our hash now carries uvar magic. The uvar/clear shortcoming has to be
    * handled by our uvar callback. */
  }
@@ -405,35 +932,40 @@ done:
  return 1;
 }
 
-STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
-#define vmg_dispell(S, Z) vmg_dispell(aTHX_ (S), (Z))
+STATIC UV vmg_dispell(pTHX_ SV *sv, const SV *wiz) {
+#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(wiz);
 
- if (SvTYPE(sv) < SVt_PVMG) { return 0; }
+ if (SvTYPE(sv) < SVt_PVMG)
+  return 0;
 
  for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) {
   moremagic = mg->mg_moremagic;
-  if (mg->mg_type == PERL_MAGIC_ext) {
-   if (mg->mg_private == sig) {
+  if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
+#if VMG_UVAR
+   const MGWIZ *z   = vmg_wizard_mgwiz(mg->mg_ptr);
+#endif /* VMG_UVAR */
+   IV           zid = vmg_wizard_id(mg->mg_ptr);
+   if (zid == wid) {
 #if VMG_UVAR
     /* If the current has no uvar, short-circuit uvar deletion. */
-    uvars = (SV2MGWIZ(mg->mg_ptr)->uvar) ? (uvars + 1) : 0;
+    uvars = z->uvar ? (uvars + 1) : 0;
 #endif /* VMG_UVAR */
     break;
 #if VMG_UVAR
-   } else if ((mg->mg_private >= SIG_MIN) &&
-              (mg->mg_private <= SIG_MAX) &&
-               SV2MGWIZ(mg->mg_ptr)->uvar) {
+   } else if (z->uvar) {
     ++uvars;
     /* We can't break here since we need to find the ext magic to delete. */
 #endif /* VMG_UVAR */
    }
   }
  }
- if (!mg) { return 0; }
+ if (!mg)
+  return 0;
 
  if (prevmagic) {
   prevmagic->mg_moremagic = moremagic;
@@ -442,8 +974,11 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
  }
  mg->mg_moremagic = NULL;
 
- if (mg->mg_obj != sv) { SvREFCNT_dec(mg->mg_obj); } /* Destroy private data */
- SvREFCNT_dec((SV *) mg->mg_ptr); /* Unreference the wizard */
+ /* Destroy private data */
+ if (mg->mg_obj != sv)
+  SvREFCNT_dec(mg->mg_obj);
+ /* Unreference the wizard */
+ SvREFCNT_dec((SV *) mg->mg_ptr);
  Safefree(mg);
 
 #if VMG_UVAR
@@ -451,12 +986,12 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
   /* 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_MIN) &&
-       (mg->mg_private <= SIG_MAX) &&
-        SV2MGWIZ(mg->mg_ptr)->uvar) {
-    ++uvars;
-    break;
+   if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
+    const MGWIZ *z = vmg_wizard_mgwiz(mg->mg_ptr);
+    if (z->uvar) {
+     ++uvars;
+     break;
+    }
    }
   }
 
@@ -464,7 +999,8 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
    struct ufuncs *uf;
    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->mg_type == PERL_MAGIC_uvar)
+     break;
    }
    /* assert(mg); */
    uf = (struct ufuncs *) mg->mg_ptr;
@@ -483,46 +1019,113 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
  }
 #endif /* VMG_UVAR */
 
+ vmg_mg_magical(sv);
+
  return 1;
 }
 
+/* ... OP info ............................................................. */
+
+#define VMG_OP_INFO_NAME   1
+#define VMG_OP_INFO_OBJECT 2
+
+#if VMG_THREADSAFE
+STATIC perl_mutex vmg_op_name_init_mutex;
+#endif
+
+STATIC U32           vmg_op_name_init      = 0;
+STATIC unsigned char vmg_op_name_len[MAXO] = { 0 };
+
+STATIC void vmg_op_info_init(pTHX_ unsigned int opinfo) {
+#define vmg_op_info_init(W) vmg_op_info_init(aTHX_ (W))
+ switch (opinfo) {
+  case VMG_OP_INFO_NAME:
+   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;
+   }
+   VMG_UNLOCK(&vmg_op_name_init_mutex);
+   break;
+  case VMG_OP_INFO_OBJECT: {
+   dMY_CXT;
+   if (!MY_CXT.b__op_stashes[0]) {
+    int c;
+    require_pv("B.pm");
+    for (c = OPc_NULL; c < OPc_MAX; ++c)
+     MY_CXT.b__op_stashes[c] = gv_stashpv(vmg_opclassnames[c], 1);
+   }
+   break;
+  }
+  default:
+   break;
+ }
+}
+
+STATIC SV *vmg_op_info(pTHX_ unsigned int opinfo) {
+#define vmg_op_info(W) vmg_op_info(aTHX_ (W))
+ if (!PL_op)
+  return &PL_sv_undef;
+
+ switch (opinfo) {
+  case VMG_OP_INFO_NAME: {
+   OPCODE t = PL_op->op_type;
+   return sv_2mortal(newSVpvn(PL_op_name[t], vmg_op_name_len[t]));
+  }
+  case VMG_OP_INFO_OBJECT: {
+   dMY_CXT;
+   return sv_bless(sv_2mortal(newRV_noinc(newSViv(PTR2IV(PL_op)))),
+                   MY_CXT.b__op_stashes[vmg_opclass(PL_op)]);
+  }
+  default:
+   break;
+ }
+
+ return &PL_sv_undef;
+}
+
 /* ... svt callbacks ....................................................... */
 
-#define VMG_CB_CALL_ARGS_MASK 15
-#define VMG_CB_CALL_EVAL      16
+#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)
 
-STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data, unsigned int flags, ...){
+STATIC int vmg_cb_call(pTHX_ SV *cb, unsigned int flags, SV *sv, ...) {
  va_list ap;
+ int ret = 0;
+ unsigned int i, args, opinfo;
  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;
 
+ args    = flags & VMG_CB_CALL_ARGS_MASK;
+ flags >>= VMG_CB_CALL_ARGS_SHIFT;
+ opinfo  = flags & VMG_CB_CALL_OPINFO;
+
  ENTER;
  SAVETMPS;
 
  PUSHMARK(SP);
- EXTEND(SP, args + 2);
+ EXTEND(SP, args + 1);
  PUSHs(sv_2mortal(newRV_inc(sv)));
- PUSHs(data ? data : &PL_sv_undef);
- va_start(ap, flags);
+ va_start(ap, sv);
  for (i = 0; i < args; ++i) {
   SV *sva = va_arg(ap, SV *);
   PUSHs(sva ? sva : &PL_sv_undef);
  }
  va_end(ap);
+ if (opinfo)
+  XPUSHs(vmg_op_info(opinfo));
  PUTBACK;
 
- call_sv(cb, G_SCALAR | eval);
+ vmg_call_sv(cb, G_SCALAR, 0);
 
  SPAGAIN;
- if (eval && IN_PERL_COMPILETIME && SvTRUE(ERRSV))
-  ++PL_error_count;
  svr = POPs;
- ret = SvOK(svr) ? SvIV(svr) : 0;
+ if (SvOK(svr))
+  ret = (int) SvIV(svr);
  PUTBACK;
 
  FREETMPS;
@@ -531,28 +1134,35 @@ STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data, unsigned int flags, ...){
  return ret;
 }
 
-#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))
+#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))
 
 STATIC int vmg_svt_get(pTHX_ SV *sv, MAGIC *mg) {
- return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_get, sv, mg->mg_obj);
+ const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
+ return vmg_cb_call1(w->cb_get, w->opinfo, sv, mg->mg_obj);
 }
 
 STATIC int vmg_svt_set(pTHX_ SV *sv, MAGIC *mg) {
- return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_set, sv, mg->mg_obj);
+ const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
+ return vmg_cb_call1(w->cb_set, w->opinfo, sv, mg->mg_obj);
 }
 
 STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
+ const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
+ unsigned int opinfo = w->opinfo;
+ U32 len, ret;
  SV *svr;
- I32 len, has_array;
- U32 ret;
+ svtype t = SvTYPE(sv);
 
  dSP;
 
- has_array = SvTYPE(sv) == SVt_PVAV;
-
  ENTER;
  SAVETMPS;
 
@@ -560,70 +1170,113 @@ STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
  EXTEND(SP, 3);
  PUSHs(sv_2mortal(newRV_inc(sv)));
  PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
- if (has_array) {
+ if (t < SVt_PVAV) {
+  STRLEN l;
+#if VMG_HAS_PERL(5, 9, 3)
+  const U8 *s = VOID2(const U8 *, VOID2(const void *, SvPV_const(sv, l)));
+#else
+  U8 *s = SvPV(sv, l);
+#endif
+  if (DO_UTF8(sv))
+   len = utf8_length(s, s + l);
+  else
+   len = l;
+  mPUSHu(len);
+ } else if (t == SVt_PVAV) {
   len = av_len((AV *) sv) + 1;
-  mPUSHi(len);
+  mPUSHu(len);
  } else {
   len = 0;
   PUSHs(&PL_sv_undef);
  }
+ if (opinfo)
+  XPUSHs(vmg_op_info(opinfo));
  PUTBACK;
 
- call_sv(SV2MGWIZ(mg->mg_ptr)->cb_len, G_SCALAR);
+ vmg_call_sv(w->cb_len, G_SCALAR, 0);
 
  SPAGAIN;
  svr = POPs;
- ret = SvOK(svr) ? SvUV(svr) : len;
+ ret = SvOK(svr) ? (U32) SvUV(svr) : len;
+ if (t == SVt_PVAV)
+  --ret;
  PUTBACK;
 
  FREETMPS;
  LEAVE;
 
- return has_array ? ret - 1 : ret;
+ return ret;
 }
 
 STATIC int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) {
- return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_clear, sv, mg->mg_obj);
+ const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
+ return vmg_cb_call1(w->cb_clear, w->opinfo, sv, mg->mg_obj);
 }
 
 STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
- SV *wiz = (SV *) mg->mg_ptr;
+ const MGWIZ *w;
  int ret = 0;
+ SV *svr;
 
- /* This may happen in global destruction */
- if (SvTYPE(wiz) == SVTYPEMASK)
+ 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 */
+ if (PL_dirty)
   return 0;
 
- /* So that it can survive tmp cleanup in vmg_cb_call */
- SvREFCNT_inc(sv);
+ w = vmg_wizard_mgwiz(mg->mg_ptr);
+
+ /* So that it survives the temp cleanup below */
+ 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
 
- /* Perl_mg_free will get rid of the magic and decrement mg->mg_obj and
-  * mg->mg_ptr reference count */
- ret = vmg_cb_call1e(SV2MGWIZ(wiz)->cb_free, sv, mg->mg_obj);
+ ENTER;
+ SAVETMPS;
+
+ PUSHMARK(SP);
+ EXTEND(SP, 2);
+ PUSHs(sv_2mortal(newRV_inc(sv)));
+ PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
+ if (w->opinfo)
+  XPUSHs(vmg_op_info(w->opinfo));
+ PUTBACK;
+
+ vmg_call_sv(w->cb_free, G_SCALAR, 1);
+
+ SPAGAIN;
+ svr = POPs;
+ if (SvOK(svr))
+  ret = (int) SvIV(svr);
+ PUTBACK;
+
+ FREETMPS;
+ LEAVE;
 
  /* 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);
 
+ /* Perl_mg_free will get rid of the magic and decrement mg->mg_obj and
+  * mg->mg_ptr reference count */
  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)
+# if VMG_HAS_PERL_MAINT(5, 11, 0, 33256) || VMG_HAS_PERL(5, 12, 0)
   I32 keylen
 # else
   int keylen
 # endif
  ) {
  SV *keysv;
+ const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
  int ret;
 
  if (keylen == HEf_SVKEY) {
@@ -632,7 +1285,7 @@ STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key,
   keysv = newSVpvn(key, keylen);
  }
 
- ret = vmg_cb_call3(SV2MGWIZ(mg->mg_ptr)->cb_copy, sv, mg->mg_obj, keysv, nsv);
+ ret = vmg_cb_call3(w->cb_copy, w->opinfo, sv, mg->mg_obj, keysv, nsv);
 
  if (keylen != HEf_SVKEY) {
   SvREFCNT_dec(keysv);
@@ -640,17 +1293,17 @@ STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key,
 
  return ret;
 }
-#endif /* MGf_COPY */
 
-#if 0 /*  MGf_DUP */
+#if 0
 STATIC int vmg_svt_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) {
  return 0;
 }
-#endif /* MGf_DUP */
+#endif
 
 #if MGf_LOCAL
 STATIC int vmg_svt_local(pTHX_ SV *nsv, MAGIC *mg) {
- return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_local, nsv, mg->mg_obj);
+ const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
+ return vmg_cb_call1(w->cb_local, w->opinfo, nsv, mg->mg_obj);
 }
 #endif /* MGf_LOCAL */
 
@@ -671,12 +1324,14 @@ STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
  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); }
+ if (uf[1].uf_val)
+  uf[1].uf_val(aTHX_ action, sv);
+ if (uf[1].uf_set)
+  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;
+  const MGWIZ *w;
   switch (mg->mg_type) {
    case PERL_MAGIC_ext:
     break;
@@ -686,30 +1341,33 @@ STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
    default:
     continue;
   }
-  if (mg->mg_private < SIG_MIN || mg->mg_private > SIG_MAX)
-   continue;
-  w = SV2MGWIZ(mg->mg_ptr);
+  if (mg->mg_private != SIG_WIZ) continue;
+  w = vmg_wizard_mgwiz(mg->mg_ptr);
   switch (w->uvar) {
    case 0:
     continue;
    case 2:
     if (!newkey)
-     newkey = key = umg->mg_obj = sv_2mortal(newSVsv(umg->mg_obj));
+     newkey = key = umg->mg_obj = sv_mortalcopy(umg->mg_obj);
   }
   switch (action) {
    case 0:
-    if (w->cb_fetch)  { vmg_cb_call2(w->cb_fetch,  sv, mg->mg_obj, key); }
+    if (w->cb_fetch)
+     vmg_cb_call2(w->cb_fetch, w->opinfo, 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,  sv, mg->mg_obj, key); }
+    if (w->cb_store)
+     vmg_cb_call2(w->cb_store, w->opinfo, sv, mg->mg_obj, key);
     break;
    case HV_FETCH_ISEXISTS:
-    if (w->cb_exists) { vmg_cb_call2(w->cb_exists, sv, mg->mg_obj, key); }
+    if (w->cb_exists)
+     vmg_cb_call2(w->cb_exists, w->opinfo, sv, mg->mg_obj, key);
     break;
    case HV_DELETE:
-    if (w->cb_delete) { vmg_cb_call2(w->cb_delete, sv, mg->mg_obj, key); }
+    if (w->cb_delete)
+     vmg_cb_call2(w->cb_delete, w->opinfo, sv, mg->mg_obj, key);
     break;
   }
  }
@@ -737,156 +1395,17 @@ STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
 }
 #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 */
-
- {
-  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 (w->cb_set   != NULL) { SvREFCNT_dec(SvRV(w->cb_set)); }
- if (w->cb_len   != NULL) { SvREFCNT_dec(SvRV(w->cb_len)); }
- if (w->cb_clear != NULL) { SvREFCNT_dec(SvRV(w->cb_clear)); }
- if (w->cb_free  != NULL) { SvREFCNT_dec(SvRV(w->cb_free)); }
-#if MGf_COPY
- if (w->cb_copy  != NULL) { SvREFCNT_dec(SvRV(w->cb_copy)); }
-#endif /* MGf_COPY */
-#if 0 /* MGf_DUP */
- if (w->cb_dup   != NULL) { SvREFCNT_dec(SvRV(w->cb_dup)); }
-#endif /* MGf_DUP */
-#if MGf_LOCAL
- if (w->cb_local != NULL) { SvREFCNT_dec(SvRV(w->cb_local)); }
-#endif /* MGf_LOCAL */
-#if VMG_UVAR
- if (w->cb_fetch  != NULL) { SvREFCNT_dec(SvRV(w->cb_fetch)); }
- if (w->cb_store  != NULL) { SvREFCNT_dec(SvRV(w->cb_store)); }
- 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);
-
- return 0;
-}
-
-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 */
-};
-
-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 U16 vmg_sv2sig(pTHX_ SV *sv) {
-#define vmg_sv2sig(S) vmg_sv2sig(aTHX_ (S))
- U16 sig;
-
- if (SvIOK(sv)) {
-  sig = SvUVX(sv);
- } else if (SvNOK(sv)) {
-  sig = SvNVX(sv);
- } else if ((SvPOK(sv) && grok_number(SvPVX(sv), SvCUR(sv), NULL))) {
-  sig = SvUV(sv);
- } else {
-  croak(vmg_invalid_sig);
- }
- if (sig < SIG_MIN) { sig += SIG_MIN; }
- if (sig > SIG_MAX) { sig %= SIG_MAX + 1; }
-
- 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;
- }
-}
+/* --- Macros for the XS section ------------------------------------------- */
 
 #define VMG_SET_CB(S, N)              \
  cb = (S);                            \
- w->cb_ ## N = (SvOK(cb) && SvROK(cb)) ? newRV_inc(SvRV(cb)) : NULL;
+ w->cb_ ## N = (SvOK(cb) && SvROK(cb)) ? SvREFCNT_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)); \
+  w->cb_  ## N = SvREFCNT_inc(SvRV(cb)); \
  } else {                             \
   t->svt_ ## N = NULL;                \
   w->cb_  ## N = NULL;                \
@@ -894,47 +1413,11 @@ STATIC SV *vmg_wizard_wiz(pTHX_ SV *wiz) {
 
 #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;
+STATIC void vmg_cleanup(pTHX_ void *ud) {
+ dMY_CXT;
 
- return z;
+ ptable_free(MY_CXT.wizards);
+ MY_CXT.wizards = NULL;
 }
 
 #endif /* VMG_THREADSAFE */
@@ -948,82 +1431,89 @@ PROTOTYPES: ENABLE
 BOOT:
 {
  HV *stash;
+
  MY_CXT_INIT;
- MY_CXT = newHV();
- hv_iterinit(MY_CXT); /* Allocate iterator */
+#if VMG_THREADSAFE
+ MY_CXT.wizards = ptable_new();
+ MY_CXT.owner   = aTHX;
+#endif
+ MY_CXT.b__op_stashes[0] = NULL;
+#if VMG_THREADSAFE
+ MUTEX_INIT(&vmg_vtable_refcount_mutex);
+ MUTEX_INIT(&vmg_op_name_init_mutex);
+ call_atexit(vmg_cleanup, NULL);
+#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_ARRAY_PUSH_NOLEN",
                     newSVuv(VMG_COMPAT_ARRAY_PUSH_NOLEN));
+ newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID",
+                    newSVuv(VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID));
  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_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));
+ newCONSTSUB(stash, "VMG_OP_INFO_NAME",    newSVuv(VMG_OP_INFO_NAME));
+ newCONSTSUB(stash, "VMG_OP_INFO_OBJECT",  newSVuv(VMG_OP_INFO_OBJECT));
 }
 
+#if VMG_THREADSAFE
+
 void
 CLONE(...)
 PROTOTYPE: DISABLE
 PREINIT:
- HV *hv;
-CODE:
-#if VMG_THREADSAFE
+ ptable *t;
+ U32     had_b__op_stash = 0;
+ int     c;
+PPCODE:
  {
-  HE *key;
+  my_cxt_t ud;
   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));
+
+  ud.wizards = t = ptable_new();
+  ud.owner   = MY_CXT.owner;
+  ptable_walk(MY_CXT.wizards, vmg_ptable_clone, &ud);
+
+  for (c = OPc_NULL; c < OPc_MAX; ++c) {
+   if (MY_CXT.b__op_stashes[c])
+    had_b__op_stash |= (((U32) 1) << c);
   }
  }
  {
   MY_CXT_CLONE;
-  MY_CXT = hv;
+  MY_CXT.wizards = t;
+  MY_CXT.owner   = aTHX;
+  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;
+  }
  }
+ XSRETURN(0);
+
 #endif /* VMG_THREADSAFE */
 
 SV *_wizard(...)
 PROTOTYPE: DISABLE
 PREINIT:
  I32 i = 0;
- U16 sig;
- char buf[8];
  MGWIZ *w;
  MGVTBL *t;
- MAGIC *mg;
- SV *sv;
- SV *svsig;
- SV *cb;
+ SV *cb, *op_info, *copy_key;
 CODE:
  dMY_CXT;
 
- if (items != 7
-#if MGf_COPY
-              + 1
-#endif /* MGf_COPY */
-#if MGf_DUP
-              + 1
-#endif /* MGf_DUP */
+ if (items != 9
 #if MGf_LOCAL
               + 1
 #endif /* MGf_LOCAL */
@@ -1032,37 +1522,22 @@ CODE:
 #endif /* VMG_UVAR */
               ) { croak(vmg_wrongargnum); }
 
- svsig = ST(i++);
- if (SvOK(svsig)) {
-  SV **old;
-  sig = vmg_sv2sig(svsig);
-  if ((old = hv_fetch(MY_CXT, buf, sprintf(buf, "%u", sig), 0))) {
-   ST(0) = sv_2mortal(newRV_inc(*old));
-   XSRETURN(1);
-  }
- } else {
-  if (HvKEYS(MY_CXT) >= SIG_NBR) { croak(vmg_toomanysigs); }
-  sig = vmg_gensig();
- }
- 
- Newx(t, 1, MGVTBL);
- Newx(w, 1, MGWIZ);
+ op_info = ST(i++);
+ w = vmg_mgwiz_alloc(SvOK(op_info) ? SvUV(op_info) : 0);
+ t = vmg_vtable_vtbl(w->vtable);
 
  VMG_SET_CB(ST(i++), data);
+
  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 */
@@ -1071,93 +1546,51 @@ CODE:
  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_WIZ;
- SvREADONLY_on(sv);
-
- hv_store(MY_CXT, buf, sprintf(buf, "%u", sig), sv, 0);
-
- RETVAL = newRV_noinc(sv);
-OUTPUT:
- RETVAL
-
-SV *gensig()
-PROTOTYPE:
-CODE:
- dMY_CXT;
- if (HvKEYS(MY_CXT) >= SIG_NBR) { croak(vmg_toomanysigs); }
- RETVAL = newSVuv(vmg_gensig());
-OUTPUT:
- RETVAL
+#if VMG_THREADSAFE
+ ptable_store(MY_CXT.wizards, w, w);
+#endif /* VMG_THREADSAFE */
 
-SV *getsig(SV *wiz)
-PROTOTYPE: $
-CODE:
- if (!SvROK(wiz)) { croak(vmg_invalid_wiz); }
- RETVAL = newSVuv(SV2MGWIZ(SvRV(wiz))->sig);
+ RETVAL = newRV_noinc(vmg_wizard_new(w));
 OUTPUT:
  RETVAL
 
 SV *cast(SV *sv, SV *wiz, ...)
 PROTOTYPE: \[$@%&*]$@
 PREINIT:
- AV *args = NULL;
- SV *ret;
+ SV **args = NULL;
+ I32 i = 0;
 CODE:
- wiz = vmg_wizard_wiz(wiz);
- if (!wiz)
-  XSRETURN_UNDEF;
  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);
  }
- ret = newSVuv(vmg_cast(SvRV(sv), wiz, args));
- SvREFCNT_dec(args);
- RETVAL = ret;
+ RETVAL = newSVuv(vmg_cast(SvRV(sv), vmg_wizard_validate(wiz), args, i));
 OUTPUT:
  RETVAL
 
-SV *getdata(SV *sv, SV *wiz)
+void
+getdata(SV *sv, SV *wiz)
 PROTOTYPE: \[$@%&*]$
 PREINIT:
  SV *data;
- U16 sig;
-CODE:
- sig = vmg_wizard_sig(wiz);
- if (!sig)
-  XSRETURN_UNDEF;
- data = vmg_data_get(SvRV(sv), sig);
- if (!data) { XSRETURN_UNDEF; }
+PPCODE:
+ data = vmg_data_get(SvRV(sv), vmg_wizard_validate(wiz));
+ if (!data)
+  XSRETURN_EMPTY;
  ST(0) = data;
  XSRETURN(1);
 
 SV *dispell(SV *sv, SV *wiz)
 PROTOTYPE: \[$@%&*]$
-PREINIT:
- U16 sig;
 CODE:
- sig = vmg_wizard_sig(wiz);
- if (!sig)
-  XSRETURN_UNDEF;
- RETVAL = newSVuv(vmg_dispell(SvRV(sv), sig));
+ RETVAL = newSVuv(vmg_dispell(SvRV(sv), vmg_wizard_validate(wiz)));
 OUTPUT:
  RETVAL