#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 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
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, ¶m);
+
+ dupsv = sv_dup(sv, ¶m);
+#endif
+
+ return SvREFCNT_inc(dupsv);
}
#endif /* VMG_THREADSAFE */
# 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 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_ext '~'
#endif
+#ifndef PERL_MAGIC_tied
+# define PERL_MAGIC_tied 'P'
+#endif
+
#ifndef MGf_COPY
# define MGf_COPY 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 */
-#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
# 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
+
+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
-/* --- 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);
+ }
-/* --- Signatures ---------------------------------------------------------- */
+ if (cxstack_ix < cxstack_max) {
+ cxix = cxstack_ix + 1;
+ if (destructor && CxTYPE(cxstack + cxix) == CXt_EVAL)
+ in_eval = 1;
+ }
-#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))
+#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
-/* ... Generate signatures ................................................. */
+ ret = call_sv(sv, flags | G_EVAL);
-STATIC U16 vmg_gensig(pTHX) {
-#define vmg_gensig() vmg_gensig(aTHX)
- U16 sig;
- char buf[8];
- dMY_CXT;
+#if VMG_SAVE_LAST_CX
+ cxstack[cxix] = saved_cx;
+#endif
- do {
- sig = SIG_NBR * Drand01() + SIG_MIN;
- } while (hv_exists(MY_CXT, buf, sprintf(buf, "%u", sig)));
+ 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 sig;
+ 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_WZO ((U16) (0x3891))
+#define SIG_WIZ ((U16) (0x3892))
+
/* --- MGWIZ structure ----------------------------------------------------- */
typedef struct {
MGVTBL *vtbl;
- U16 sig;
- U16 uvar;
+
+ U8 opinfo;
+ U8 uvar;
+
SV *cb_data;
SV *cb_get, *cb_set, *cb_len, *cb_clear, *cb_free;
#if MGf_COPY
#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_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);
+#if MGf_COPY
+ SvREFCNT_dec(w->cb_copy);
+#endif /* MGf_COPY */
+#if 0 /* MGf_DUP */
+ SvREFCNT_dec(w->cb_dup);
+#endif /* MGf_DUP */
+#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 */
+
+ Safefree(w->vtbl);
+ 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))
+ MGVTBL *t;
+ MGWIZ *z;
+
+ if (!w)
+ return NULL;
+
+ Newx(t, 1, MGVTBL);
+ Copy(w->vtbl, t, 1, MGVTBL);
+
+ Newx(z, 1, MGWIZ);
+
+ z->vtbl = t;
+ 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);
+#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;
+
+ 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 */
+#if MGf_COPY
+ NULL, /* copy */
+#endif /* MGf_COPY */
+#if MGf_DUP
+ NULL, /* dup */
+#endif /* MGf_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;
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;
FREETMPS;
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 .................................................. */
}
#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;
+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;
+ 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, w->vtbl,
+ (const char *) wiz, HEf_SVKEY);
+ SvREFCNT_dec(data);
+ mg->mg_private = SIG_WIZ;
#if MGf_COPY
if (w->cb_copy)
mg->mg_flags |= MGf_COPY;
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 && SvTYPE(sv) >= SVt_PVHV) {
- MAGIC *prevmagic;
- int add_uvar = 1;
+ if (w->uvar) {
+ MAGIC *prevmagic, *moremagic = NULL;
struct ufuncs uf[2];
uf[0].uf_val = vmg_svt_val;
/* 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. */
struct ufuncs *olduf = (struct ufuncs *) mg->mg_ptr;
if (olduf->uf_val == vmg_svt_val) {
- /* It's our uvar magic, nothing to do. */
- add_uvar = 0;
+ /* 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;
}
}
- if (add_uvar) {
- 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. */
}
#endif /* VMG_UVAR */
+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;
}
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
/* 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;
+ }
}
}
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;
}
#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:
+#if VMG_THREADSAFE
+ MUTEX_LOCK(&vmg_op_name_init_mutex);
+#endif
+ 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
+ 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;
LEAVE;
-
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;
- int count;
-
- has_array = SvTYPE(sv) == SVt_PVAV;
ENTER;
SAVETMPS;
EXTEND(SP, 3);
PUSHs(sv_2mortal(newRV_inc(sv)));
PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
- if (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;
- count = 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) {
- /* So that it can survive tmp cleanup in vmg_cb_call */
- SvREFCNT_inc(sv);
-#if !VMG_HAS_PERL_MAINT(5, 11, 0, 32686)
+ const MGWIZ *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 */
+ if (PL_dirty)
+ return 0;
+
+ 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) || 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
+
+ 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 vmg_cb_call1e(SV2MGWIZ(mg->mg_ptr)->cb_free, sv, mg->mg_obj);
+ 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) {
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);
#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 */
#if VMG_UVAR
+STATIC OP *vmg_pp_resetuvar(pTHX) {
+ SvRMAGICAL_on(cSVOP_sv);
+ return NORMAL;
+}
+
STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
struct ufuncs *uf;
- MAGIC *mg;
- SV *key = NULL;
+ MAGIC *mg, *umg;
+ SV *key = NULL, *newkey = NULL;
+ int tied = 0;
- mg = mg_find(sv, PERL_MAGIC_uvar);
- /* mg can't be NULL or we wouldn't be there. */
- key = mg->mg_obj;
- uf = (struct ufuncs *) mg->mg_ptr;
+ umg = mg_find(sv, PERL_MAGIC_uvar);
+ /* umg can't be NULL or we wouldn't be there. */
+ key = umg->mg_obj;
+ uf = (struct ufuncs *) umg->mg_ptr;
- if (uf[1].uf_val != NULL) { uf[1].uf_val(aTHX_ action, sv); }
- if (uf[1].uf_set != NULL) { uf[1].uf_set(aTHX_ action, sv); }
+ 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;
- if ((mg->mg_type != PERL_MAGIC_ext)
- || (mg->mg_private < SIG_MIN)
- || (mg->mg_private > SIG_MAX)) { continue; }
- w = SV2MGWIZ(mg->mg_ptr);
- if (!w->uvar) { continue; }
+ const MGWIZ *w;
+ switch (mg->mg_type) {
+ case PERL_MAGIC_ext:
+ break;
+ case PERL_MAGIC_tied:
+ ++tied;
+ continue;
+ default:
+ continue;
+ }
+ 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_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;
}
}
- 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 */
-
- {
- dMY_CXT;
- if (hv_delete(MY_CXT, buf, sprintf(buf, "%u", w->sig), 0) != wiz)
- return 0;
+ if (SvRMAGICAL(sv) && !tied) {
+ /* Temporarily hide the RMAGICAL flag of the hash so it isn't wrongly
+ * mistaken for a tied hash by the rest of hv_common. It will be reset by
+ * the op_ppaddr of a new fake op injected between the current and the next
+ * one. */
+ OP *o = PL_op;
+ if (!o->op_next || o->op_next->op_ppaddr != vmg_pp_resetuvar) {
+ SVOP *svop;
+ NewOp(1101, svop, 1, SVOP);
+ svop->op_type = OP_STUB;
+ svop->op_ppaddr = vmg_pp_resetuvar;
+ svop->op_next = o->op_next;
+ svop->op_flags = 0;
+ svop->op_sv = sv;
+ o->op_next = (OP *) svop;
+ }
+ SvRMAGICAL_off(sv);
}
- 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;
}
+#endif /* VMG_UVAR */
-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; \
#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 */
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_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];
+ UV opinfo;
MGWIZ *w;
MGVTBL *t;
- MAGIC *mg;
- SV *sv;
- SV *svsig;
SV *cb;
CODE:
dMY_CXT;
+ 1
#endif /* MGf_LOCAL */
#if VMG_UVAR
- + 4
+ + 5
#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);
VMG_SET_CB(ST(i++), data);
+
+ cb = ST(i++);
+ opinfo = SvOK(cb) ? SvUV(cb) : 0;
+ w->opinfo = (U8) ((opinfo < 255) ? opinfo : 255);
+ 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_CB(ST(i++), store);
VMG_SET_CB(ST(i++), exists);
VMG_SET_CB(ST(i++), delete);
+ cb = ST(i++);
+ if (w->cb_fetch || w->cb_store || w->cb_exists || w->cb_delete)
+ w->uvar = SvTRUE(cb) ? 2 : 1;
+ else
+ w->uvar = 0;
#endif /* VMG_UVAR */
#if VMG_MULTIPLICITY
w->owner = aTHX;
#endif /* VMG_MULTIPLICITY */
+ w->vtbl = t;
+#if VMG_THREADSAFE
+ ptable_store(MY_CXT.wizards, w, w);
+#endif /* VMG_THREADSAFE */
- w->vtbl = t;
- w->sig = sig;
-#if VMG_UVAR
- w->uvar = (w->cb_fetch || w->cb_store || w->cb_exists || w->cb_delete);
-#endif /* VMG_UVAR */
-
- 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
-
-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
projects / perl / modules / Variable-Magic.git / blobdiff