#include "perl.h"
#include "XSUB.h"
-#define __PACKAGE__ "Variable::Magic"
+/* --- XS helpers ---------------------------------------------------------- */
-#undef VOID2
-#ifdef __cplusplus
-# define VOID2(T, P) static_cast<T>(P)
-#else
-# define VOID2(T, P) (P)
-#endif
+#define XSH_PACKAGE "Variable::Magic"
-#ifndef VMG_PERL_PATCHLEVEL
-# ifdef PERL_PATCHNUM
-# define VMG_PERL_PATCHLEVEL PERL_PATCHNUM
-# else
-# define VMG_PERL_PATCHLEVEL 0
-# endif
-#endif
+#include "xsh/caps.h"
+#include "xsh/util.h"
-#define VMG_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
+/* ... Features ............................................................ */
-#define VMG_HAS_PERL_BRANCH(R, V, S) (PERL_REVISION == (R) && PERL_VERSION == (V) && PERL_SUBVERSION >= (S))
+/* uvar magic and Hash::Util::FieldHash were commited with 28419, but we only
+ * enable them on 5.10 */
+#if XSH_HAS_PERL(5, 10, 0)
+# define VMG_UVAR 1
+#else
+# define VMG_UVAR 0
+#endif
-#define VMG_HAS_PERL_MAINT(R, V, S, P) (PERL_REVISION == (R) && PERL_VERSION == (V) && (VMG_PERL_PATCHLEVEL >= (P) || (!VMG_PERL_PATCHLEVEL && PERL_SUBVERSION >= (S))))
+#if XSH_HAS_PERL_MAINT(5, 11, 0, 32969) || XSH_HAS_PERL(5, 12, 0)
+# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1
+#else
+# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0
+#endif
-/* --- Threads and multiplicity -------------------------------------------- */
+#if XSH_HAS_PERL(5, 17, 4)
+# define VMG_COMPAT_SCALAR_NOLEN 1
+#else
+# define VMG_COMPAT_SCALAR_NOLEN 0
+#endif
-#ifndef NOOP
-# define NOOP
+/* Applied to dev-5.9 as 25854, integrated to maint-5.8 as 28160, partially
+ * reverted to dev-5.11 as 9cdcb38b */
+#if XSH_HAS_PERL_MAINT(5, 8, 9, 28160) || XSH_HAS_PERL_MAINT(5, 9, 3, 25854) || XSH_HAS_PERL(5, 10, 0)
+# ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN
+# if XSH_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
-#ifndef dNOOP
-# define dNOOP
+/* Applied to dev-5.11 as 34908 */
+#if XSH_HAS_PERL_MAINT(5, 11, 0, 34908) || XSH_HAS_PERL(5, 12, 0)
+# define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 1
+#else
+# define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 0
#endif
-/* Safe unless stated otherwise in Makefile.PL */
-#ifndef VMG_FORKSAFE
-# define VMG_FORKSAFE 1
+/* Applied to dev-5.9 as 31473 (see #43357), integrated to maint-5.8 as 32542 */
+#if XSH_HAS_PERL_MAINT(5, 8, 9, 32542) || XSH_HAS_PERL_MAINT(5, 9, 5, 31473) || XSH_HAS_PERL(5, 10, 0)
+# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 1
+#else
+# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
#endif
-#ifndef VMG_MULTIPLICITY
-# if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
-# define VMG_MULTIPLICITY 1
-# else
-# define VMG_MULTIPLICITY 0
-# endif
+#if XSH_HAS_PERL(5, 11, 0)
+# define VMG_COMPAT_HASH_DELETE_NOUVAR_VOID 1
+#else
+# define VMG_COMPAT_HASH_DELETE_NOUVAR_VOID 0
#endif
-#if VMG_MULTIPLICITY && !defined(tTHX)
-# define tTHX PerlInterpreter*
+
+#if XSH_HAS_PERL(5, 17, 0)
+# define VMG_COMPAT_CODE_COPY_CLONE 1
+#else
+# define VMG_COMPAT_CODE_COPY_CLONE 0
#endif
-#if VMG_MULTIPLICITY && defined(USE_ITHREADS) && defined(dMY_CXT) && defined(MY_CXT) && defined(START_MY_CXT) && defined(MY_CXT_INIT) && (defined(MY_CXT_CLONE) || defined(dMY_CXT_SV))
-# define VMG_THREADSAFE 1
-# ifndef MY_CXT_CLONE
-# define MY_CXT_CLONE \
- dMY_CXT_SV; \
- my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \
- Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \
- sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
-# endif
+#if XSH_HAS_PERL(5, 13, 2)
+# define VMG_COMPAT_GLOB_GET 1
#else
-# define VMG_THREADSAFE 0
-# undef dMY_CXT
-# define dMY_CXT dNOOP
-# undef MY_CXT
-# define MY_CXT vmg_globaldata
-# undef START_MY_CXT
-# define START_MY_CXT STATIC my_cxt_t MY_CXT;
-# undef MY_CXT_INIT
-# define MY_CXT_INIT NOOP
-# undef MY_CXT_CLONE
-# define MY_CXT_CLONE NOOP
+# define VMG_COMPAT_GLOB_GET 0
#endif
-#if VMG_THREADSAFE
+/* ... Trampoline ops ...................................................... */
-STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
-#define vmg_clone(P, O) vmg_clone(aTHX_ (P), (O))
- SV *dupsv;
+#define VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE (XSH_HAS_PERL(5, 10, 0) && !XSH_HAS_PERL(5, 10, 1))
-#if VMG_HAS_PERL(5, 13, 2)
- CLONE_PARAMS *param = Perl_clone_params_new(owner, aTHX);
+/* NewOp() isn't public in perl 5.8.0. */
+#define VMG_RESET_RMG_NEEDS_TRAMPOLINE (VMG_UVAR && (XSH_THREADSAFE || !XSH_HAS_PERL(5, 8, 1)))
- dupsv = sv_dup(sv, param);
+#define VMG_NEEDS_TRAMPOLINE VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE || VMG_RESET_RMG_NEEDS_TRAMPOLINE
- Perl_clone_params_del(param);
-#else
- CLONE_PARAMS param;
+#if VMG_NEEDS_TRAMPOLINE
- param.stashes = NULL; /* don't need it unless sv is a PVHV */
- param.flags = 0;
- param.proto_perl = owner;
+typedef struct {
+ OP temp;
+ SVOP target;
+} vmg_trampoline;
+
+static void vmg_trampoline_init(vmg_trampoline *t, OP *(*cb)(pTHX)) {
+ t->temp.op_type = OP_STUB;
+ t->temp.op_ppaddr = 0;
+ t->temp.op_next = (OP *) &t->target;
+ t->temp.op_flags = 0;
+ t->temp.op_private = 0;
+
+ t->target.op_type = OP_STUB;
+ t->target.op_ppaddr = cb;
+ t->target.op_next = NULL;
+ t->target.op_flags = 0;
+ t->target.op_private = 0;
+ t->target.op_sv = NULL;
+}
- dupsv = sv_dup(sv, ¶m);
-#endif
+static OP *vmg_trampoline_bump(pTHX_ vmg_trampoline *t, SV *sv, OP *o) {
+#define vmg_trampoline_bump(T, S, O) vmg_trampoline_bump(aTHX_ (T), (S), (O))
+ t->temp = *o;
+ t->temp.op_next = (OP *) &t->target;
+
+ t->target.op_sv = sv;
+ t->target.op_next = o->op_next;
- return SvREFCNT_inc(dupsv);
+ return &t->temp;
}
-#endif /* VMG_THREADSAFE */
+#endif /* VMG_NEEDS_TRAMPOLINE */
/* --- Compatibility ------------------------------------------------------- */
# define SvREFCNT_inc_simple_void(sv) ((void) SvREFCNT_inc(sv))
#endif
+#ifndef SvREFCNT_dec_NN
+# define SvREFCNT_dec_NN(sv) ((void) SvREFCNT_dec(sv))
+#endif
+
#ifndef mPUSHu
# define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U)))
#endif
# define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling)
#endif
-/* 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
+#ifndef OP_NAME
+# define OP_NAME(O) (PL_op_name[(O)->op_type])
#endif
-/* Applied to dev-5.9 as 25854, integrated to maint-5.8 as 28160, partially
- * reverted to dev-5.11 as 9cdcb38b */
-#if VMG_HAS_PERL_MAINT(5, 8, 9, 28160) || VMG_HAS_PERL_MAINT(5, 9, 3, 25854) || VMG_HAS_PERL(5, 10, 0)
-# ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN
-# 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
+#ifndef OP_CLASS
+# define OP_CLASS(O) (PL_opargs[(O)->op_type] & OA_CLASS_MASK)
#endif
-/* Applied to dev-5.11 as 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
-#endif
-
-/* Applied to dev-5.9 as 31473 (see #43357), integrated to maint-5.8 as 32542 */
-#if VMG_HAS_PERL_MAINT(5, 8, 9, 32542) || VMG_HAS_PERL_MAINT(5, 9, 5, 31473) || VMG_HAS_PERL(5, 10, 0)
-# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 1
-#else
-# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
-#endif
-
-#if VMG_HAS_PERL_MAINT(5, 11, 0, 32969) || VMG_HAS_PERL(5, 12, 0)
-# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1
-#else
-# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0
-#endif
-
-#if VMG_HAS_PERL(5, 13, 2)
-# define VMG_COMPAT_GLOB_GET 1
-#else
-# define VMG_COMPAT_GLOB_GET 0
-#endif
+#define VMG_CAREFUL_SELF_DESTRUCTION XSH_HAS_PERL(5, 25, 3)
/* ... 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)
+#if XSH_HAS_PERL(5, 11, 3)
#define vmg_mg_magical(S) mg_magical(S)
#else
-STATIC void vmg_mg_magical(SV *sv) {
+static void vmg_mg_magical(SV *sv) {
const MAGIC *mg;
SvMAGICAL_off(sv);
#endif
-/* ... Safe version of call_sv() ........................................... */
+/* ... Cleaner version of sv_magicext() .................................... */
-#define VMG_SAVE_LAST_CX (!VMG_HAS_PERL(5, 8, 4) || VMG_HAS_PERL(5, 9, 5))
+static MAGIC *vmg_sv_magicext(pTHX_ SV *sv, SV *obj, const MGVTBL *vtbl, const void *ptr, I32 len) {
+#define vmg_sv_magicext(S, O, V, P, L) vmg_sv_magicext(aTHX_ (S), (O), (V), (P), (L))
+ MAGIC *mg;
-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
+ mg = sv_magicext(sv, obj, PERL_MAGIC_ext, vtbl, ptr, len);
+ if (!mg)
+ return NULL;
+
+ mg->mg_private = 0;
+
+ if (vtbl->svt_copy)
+ mg->mg_flags |= MGf_COPY;
+#if MGf_DUP
+ if (vtbl->svt_dup)
+ mg->mg_flags |= MGf_DUP;
+#endif /* MGf_DUP */
+#if MGf_LOCAL
+ if (vtbl->svt_local)
+ mg->mg_flags |= MGf_LOCAL;
+#endif /* MGf_LOCAL */
+
+ if (mg->mg_flags & MGf_REFCOUNTED)
+ SvREFCNT_dec(obj);
+
+ return mg;
+}
+
+/* ... Safe version of call_sv() ........................................... */
+
+static I32 vmg_call_sv(pTHX_ SV *sv, I32 flags, int (*cleanup)(pTHX_ void *), void *ud) {
+#define vmg_call_sv(S, F, C, U) vmg_call_sv(aTHX_ (S), (F), (C), (U))
+ I32 ret;
SV *old_err = NULL;
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;
+ old_err = newSVsv(ERRSV);
+ sv_setsv(ERRSV, &PL_sv_undef);
}
-#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;
- }
+ SvREFCNT_dec(old_err);
+
if (IN_PERL_COMPILETIME) {
if (!PL_in_eval) {
if (PL_errors)
Perl_warn(aTHX_ "%s", SvPV_nolen(ERRSV));
SvCUR_set(ERRSV, 0);
}
-#if VMG_HAS_PERL(5, 10, 0) || defined(PL_parser)
+#if XSH_HAS_PERL(5, 10, 0) || defined(PL_parser)
if (PL_parser)
++PL_parser->error_count;
#elif defined(PL_error_count)
#else
++PL_Ierror_count;
#endif
- } else if (!in_eval)
+ } else {
+ if (!cleanup || cleanup(aTHX_ ud))
croak(NULL);
+ }
} else {
if (old_err) {
- SvREFCNT_dec(ERRSV);
- ERRSV = old_err;
+ sv_setsv(ERRSV, old_err);
+ SvREFCNT_dec(old_err);
}
}
/* --- 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
+ OPc_NULL,
+ OPc_BASEOP,
+ OPc_UNOP,
+ OPc_BINOP,
+ OPc_LOGOP,
+ OPc_LISTOP,
+ OPc_PMOP,
+ OPc_SVOP,
+ OPc_PADOP,
+ OPc_PVOP,
+ OPc_LOOP,
+ OPc_COP,
+#if XSH_HAS_PERL(5, 21, 5)
+ OPc_METHOP,
+#endif
+#if XSH_HAS_PERL(5, 21, 7)
+ OPc_UNOP_AUX,
+#endif
+ OPc_MAX
} opclass;
-STATIC const char *const vmg_opclassnames[] = {
+static const char *const vmg_opclassnames[] = {
"B::NULL",
"B::OP",
"B::UNOP",
"B::PADOP",
"B::PVOP",
"B::LOOP",
- "B::COP"
+ "B::COP",
+#if XSH_HAS_PERL(5, 21, 5)
+ "B::METHOP",
+#endif
+#if XSH_HAS_PERL(5, 21, 7)
+ "B::UNOP_AUX",
+#endif
+ NULL
};
-STATIC opclass vmg_opclass(const OP *o) {
+static opclass vmg_opclass(pTHX_ const OP *o) {
+#define vmg_opclass(O) vmg_opclass(aTHX_ (O))
#if 0
if (!o)
return OPc_NULL;
#endif
- if (o->op_type == 0)
+ if (o->op_type == 0) {
+#if XSH_HAS_PERL(5, 21, 7)
+ if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE)
+ return OPc_COP;
+#endif
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);
return OPc_PADOP;
#endif
- switch (PL_opargs[o->op_type] & OA_CLASS_MASK) {
+ switch (OP_CLASS(o)) {
case OA_BASEOP:
return OPc_BASEOP;
case OA_UNOP:
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;
+ return (
+#if XSH_HAS_PERL(5, 13, 7)
+ (o->op_type != OP_CUSTOM) &&
+#endif
+ (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF)))
+#if defined(USE_ITHREADS) && XSH_HAS_PERL(5, 8, 9)
+ ? OPc_PADOP : OPc_PVOP;
+#else
+ ? OPc_SVOP : OPc_PVOP;
+#endif
case OA_LOOP:
return OPc_LOOP;
case OA_COP:
return OPc_BASEOP;
else
return OPc_PVOP;
+#if XSH_HAS_PERL(5, 21, 5)
+ case OA_METHOP:
+ return OPc_METHOP;
+#endif
+#if XSH_HAS_PERL(5, 21, 7)
+ case OA_UNOP_AUX:
+ return OPc_UNOP_AUX;
+#endif
}
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";
+static const char vmg_invalid_wiz[] = "Invalid wizard object";
+static const char vmg_wrongargnum[] = "Wrong number of arguments";
+
+/* --- Thread-local storage ------------------------------------------------ */
+
+typedef struct {
+ HV *b__op_stashes[OPc_MAX];
+ I32 depth;
+ MAGIC *freed_tokens;
+#if VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE
+ vmg_trampoline propagate_errsv;
+#endif
+#if VMG_RESET_RMG_NEEDS_TRAMPOLINE
+ vmg_trampoline reset_rmg;
+#endif
+} xsh_user_cxt_t;
+
+#if XSH_THREADSAFE
+
+static void xsh_user_clone(pTHX_ const xsh_user_cxt_t *old_cxt, xsh_user_cxt_t *new_cxt) {
+ int c;
+
+ for (c = OPc_NULL; c < OPc_MAX; ++c) {
+ new_cxt->b__op_stashes[c] = old_cxt->b__op_stashes[c]
+ ? gv_stashpv(vmg_opclassnames[c], 1)
+ : NULL;
+ }
+
+ new_cxt->depth = old_cxt->depth;
+ new_cxt->freed_tokens = NULL;
+
+ return;
+}
+
+
+#endif /* XSH_THREADSAFE */
-/* --- Signatures ---------------------------------------------------------- */
+#define XSH_THREADS_NEED_TEARDOWN_LATE 1
-#define SIG_WZO ((U16) (0x3891))
-#define SIG_WIZ ((U16) (0x3892))
+#include "xsh/threads.h"
-/* --- MGWIZ structure ----------------------------------------------------- */
+/* --- <vmg_vtable> structure ---------------------------------------------- */
+
+#if XSH_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
+
+static perl_mutex vmg_vtable_refcount_mutex;
+
+static vmg_vtable *vmg_vtable_dup(pTHX_ vmg_vtable *t) {
+#define vmg_vtable_dup(T) vmg_vtable_dup(aTHX_ (T))
+ XSH_LOCK(&vmg_vtable_refcount_mutex);
+ ++t->refcount;
+ XSH_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;
+
+ XSH_LOCK(&vmg_vtable_refcount_mutex);
+ refcount = --t->refcount;
+ XSH_UNLOCK(&vmg_vtable_refcount_mutex);
+
+ if (!refcount) {
+ PerlMemShared_free(t->vtbl);
+ PerlMemShared_free(t);
+ }
+}
+
+#else /* XSH_THREADSAFE */
+
+typedef MGVTBL vmg_vtable;
+
+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 /* !XSH_THREADSAFE */
+
+/* --- <vmg_wizard> structure ---------------------------------------------- */
+
+typedef struct {
+ vmg_vtable *vtable;
U8 opinfo;
U8 uvar;
#if VMG_UVAR
SV *cb_fetch, *cb_store, *cb_exists, *cb_delete;
#endif /* VMG_UVAR */
+} vmg_wizard;
-#if VMG_MULTIPLICITY
- tTHX owner;
-#endif /* VMG_MULTIPLICITY */
-} MGWIZ;
-
-STATIC void vmg_op_info_init(pTHX_ unsigned int opinfo);
+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;
+static vmg_wizard *vmg_wizard_alloc(pTHX_ UV opinfo) {
+#define vmg_wizard_alloc(O) vmg_wizard_alloc(aTHX_ (O))
+ vmg_wizard *w;
- Newx(w, 1, MGWIZ);
+ Newx(w, 1, vmg_wizard);
w->uvar = 0;
w->opinfo = (U8) ((opinfo < 255) ? opinfo : 255);
if (w->opinfo)
vmg_op_info_init(aTHX_ w->opinfo);
- Newx(t, 1, MGVTBL);
- w->vtbl = t;
+ 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))
+static void vmg_wizard_free(pTHX_ vmg_wizard *w) {
+#define vmg_wizard_free(W) vmg_wizard_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);
+ /* During global destruction, any of the callbacks may already have been
+ * freed, so we can't rely on still being able to access them. */
+ if (!PL_dirty) {
+ SvREFCNT_dec(w->cb_data);
+ SvREFCNT_dec(w->cb_get);
+ SvREFCNT_dec(w->cb_set);
+ SvREFCNT_dec(w->cb_len);
+ SvREFCNT_dec(w->cb_clear);
+ SvREFCNT_dec(w->cb_free);
+ SvREFCNT_dec(w->cb_copy);
#if 0
- SvREFCNT_dec(w->cb_dup);
+ SvREFCNT_dec(w->cb_dup);
#endif
#if MGf_LOCAL
- SvREFCNT_dec(w->cb_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);
+ 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);
+ /* PerlMemShared_free() and Safefree() are still fine during global
+ * destruction though. */
+ vmg_vtable_free(w->vtable);
Safefree(w);
return;
}
-#if VMG_THREADSAFE
+#if XSH_THREADSAFE
#define VMG_CLONE_CB(N) \
- z->cb_ ## N = (w->cb_ ## N) ? vmg_clone(w->cb_ ## N, w->owner) \
+ z->cb_ ## N = (w->cb_ ## N) ? SvREFCNT_inc(sv_dup(w->cb_ ## N, params)) \
: NULL;
-STATIC MGWIZ *vmg_mgwiz_clone(pTHX_ const MGWIZ *w) {
-#define vmg_mgwiz_clone(W) vmg_mgwiz_clone(aTHX_ (W))
- MGVTBL *t;
- MGWIZ *z;
+static const vmg_wizard *vmg_wizard_dup(pTHX_ const vmg_wizard *w, CLONE_PARAMS *params) {
+#define vmg_wizard_dup(W, P) vmg_wizard_dup(aTHX_ (W), (P))
+ vmg_wizard *z;
if (!w)
return NULL;
- Newx(t, 1, MGVTBL);
- Copy(w->vtbl, t, 1, MGVTBL);
+ Newx(z, 1, vmg_wizard);
- Newx(z, 1, MGWIZ);
-
- z->vtbl = t;
+ z->vtable = vmg_vtable_dup(w->vtable);
z->uvar = w->uvar;
z->opinfo = w->opinfo;
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)))
+#endif /* XSH_THREADSAFE */
-#define pPTBL pTHX
-#define pPTBL_ pTHX_
-#define aPTBL aTHX
-#define aPTBL_ aTHX_
+#define vmg_wizard_id(W) PTR2IV(vmg_vtable_vtbl((W)->vtable))
-#include "ptable.h"
+/* --- Wizard SV objects --------------------------------------------------- */
-#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))
+static int vmg_wizard_sv_free(pTHX_ SV *sv, MAGIC *mg) {
+ vmg_wizard_free((vmg_wizard *) mg->mg_ptr);
-#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);
+ return 0;
}
-#endif /* VMG_THREADSAFE */
+#if XSH_THREADSAFE
-/* --- Wizard objects ------------------------------------------------------ */
+static int vmg_wizard_sv_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *params) {
+ mg->mg_ptr = (char *) vmg_wizard_dup((const vmg_wizard *) mg->mg_ptr, params);
-STATIC int vmg_wizard_free(pTHX_ SV *sv, MAGIC *mg);
+ return 0;
+}
-STATIC MGVTBL vmg_wizard_vtbl = {
- NULL, /* get */
- NULL, /* set */
- NULL, /* len */
- NULL, /* clear */
- vmg_wizard_free, /* free */
- NULL, /* copy */
- NULL, /* dup */
+#endif /* XSH_THREADSAFE */
+
+static MGVTBL vmg_wizard_sv_vtbl = {
+ NULL, /* get */
+ NULL, /* set */
+ NULL, /* len */
+ NULL, /* clear */
+ vmg_wizard_sv_free, /* free */
+ NULL, /* copy */
+#if XSH_THREADSAFE
+ vmg_wizard_sv_dup, /* dup */
+#else
+ NULL, /* dup */
+#endif
#if MGf_LOCAL
- NULL, /* local */
+ NULL, /* local */
#endif /* MGf_LOCAL */
};
-/* ... Wizard constructor .................................................. */
+static SV *vmg_wizard_sv_new(pTHX_ const vmg_wizard *w) {
+#define vmg_wizard_sv_new(W) vmg_wizard_sv_new(aTHX_ (W))
+ SV *wiz;
-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 XSH_THREADSAFE
+ wiz = newSV(0);
+#else
+ wiz = newSViv(PTR2IV(w));
+#endif
+
+ vmg_sv_magicext(wiz, NULL, &vmg_wizard_sv_vtbl, w, 0);
- 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;
- }
+#if XSH_THREADSAFE
- 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))
+#define vmg_sv_has_wizard_type(S) (SvTYPE(S) >= SVt_PVMG)
-/* ... Wizard destructor ................................................... */
+static const vmg_wizard *vmg_wizard_from_sv_nocheck(const SV *wiz) {
+ MAGIC *mg;
-STATIC int vmg_wizard_free(pTHX_ SV *sv, MAGIC *mg) {
- MGWIZ *w;
+ for (mg = SvMAGIC(wiz); mg; mg = mg->mg_moremagic) {
+ if (mg->mg_type == PERL_MAGIC_ext && mg->mg_virtual == &vmg_wizard_sv_vtbl)
+ return (const vmg_wizard *) mg->mg_ptr;
+ }
- if (PL_dirty) /* During global destruction, the context is already freed */
- return 0;
+ return NULL;
+}
- w = (MGWIZ *) vmg_wizard_main_mgwiz(sv);
+#else /* XSH_THREADSAFE */
-#if VMG_THREADSAFE
- {
- dMY_CXT;
- ptable_store(MY_CXT.wizards, w, NULL);
- }
-#else /* VMG_THREADSAFE */
- vmg_mgwiz_free(w);
-#endif /* !VMG_THREADSAFE */
+#define vmg_sv_has_wizard_type(S) SvIOK(S)
- return 0;
-}
+#define vmg_wizard_from_sv_nocheck(W) INT2PTR(const vmg_wizard *, SvIVX(W))
-#if VMG_THREADSAFE
+#endif /* !XSH_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;
+#define vmg_wizard_from_sv(W) (vmg_sv_has_wizard_type(W) ? vmg_wizard_from_sv_nocheck(W) : NULL)
- w = vmg_wizard_main_mgwiz(wiz);
- if (w->owner == aTHX)
- return w;
+static const vmg_wizard *vmg_wizard_from_mg(const MAGIC *mg) {
+ if (mg->mg_type == PERL_MAGIC_ext && mg->mg_len == HEf_SVKEY) {
+ SV *sv = (SV *) mg->mg_ptr;
- {
- dMY_CXT;
- return VOID2(const MGWIZ *, ptable_fetch(MY_CXT.wizards, w));
+ if (vmg_sv_has_wizard_type(sv))
+ return vmg_wizard_from_sv_nocheck(sv);
}
-}
-#else /* VMG_THREADSAFE */
-
-#define vmg_wizard_mgwiz(W) vmg_wizard_main_mgwiz(W)
+ return NULL;
+}
-#endif /* !VMG_THREADSAFE */
+#define vmg_wizard_from_mg_nocheck(M) vmg_wizard_from_sv_nocheck((const SV *) (M)->mg_ptr)
/* --- User-level functions implementation --------------------------------- */
-STATIC const MAGIC *vmg_find(const SV *sv, const SV *wiz) {
- const MAGIC *mg, *moremagic;
+static const MAGIC *vmg_find(const SV *sv, const vmg_wizard *w) {
+ const MAGIC *mg;
IV wid;
if (SvTYPE(sv) < SVt_PVMG)
return NULL;
- wid = vmg_wizard_id(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;
- }
+ wid = vmg_wizard_id(w);
+
+ for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ const vmg_wizard *z = vmg_wizard_from_mg(mg);
+
+ if (z && vmg_wizard_id(z) == wid)
+ return mg;
}
return NULL;
/* ... Construct private data .............................................. */
-STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, SV **args, I32 items) {
+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;
ENTER;
SAVETMPS;
+ PUSHSTACKi(PERLSI_MAGIC);
+
PUSHMARK(SP);
EXTEND(SP, items + 1);
PUSHs(sv_2mortal(newRV_inc(sv)));
PUSHs(args[i]);
PUTBACK;
- vmg_call_sv(ctor, G_SCALAR, 0);
+ vmg_call_sv(ctor, G_SCALAR, 0, NULL);
SPAGAIN;
nsv = POPs;
-#if VMG_HAS_PERL(5, 8, 3)
+#if XSH_HAS_PERL(5, 8, 3)
SvREFCNT_inc_simple_void(nsv); /* Or it will be destroyed in FREETMPS */
#else
nsv = sv_newref(nsv); /* Workaround some bug in SvREFCNT_inc() */
#endif
PUTBACK;
+ POPSTACK;
+
FREETMPS;
LEAVE;
return nsv;
}
-STATIC SV *vmg_data_get(pTHX_ SV *sv, const SV *wiz) {
+static SV *vmg_data_get(pTHX_ SV *sv, const vmg_wizard *w) {
#define vmg_data_get(S, W) vmg_data_get(aTHX_ (S), (W))
- const MAGIC *mg = vmg_find(sv, wiz);
+ const MAGIC *mg = vmg_find(sv, w);
+
return mg ? mg->mg_obj : NULL;
}
/* ... Magic cast/dispell .................................................. */
#if VMG_UVAR
-STATIC I32 vmg_svt_val(pTHX_ IV, SV *);
-STATIC void vmg_uvar_del(SV *sv, MAGIC *prevmagic, MAGIC *mg, MAGIC *moremagic) {
- if (prevmagic) {
+static I32 vmg_svt_val(pTHX_ IV, SV *);
+
+typedef struct {
+ struct ufuncs new_uf;
+ struct ufuncs old_uf;
+} vmg_uvar_ud;
+
+#endif /* VMG_UVAR */
+
+static void vmg_mg_del(pTHX_ SV *sv, MAGIC *prevmagic, MAGIC *mg, MAGIC *moremagic) {
+#define vmg_mg_del(S, P, M, N) vmg_mg_del(aTHX_ (S), (P), (M), (N))
+ dXSH_CXT;
+
+ if (prevmagic)
prevmagic->mg_moremagic = moremagic;
- } else {
+ else
SvMAGIC_set(sv, moremagic);
+
+ /* Destroy private data */
+#if VMG_UVAR
+ if (mg->mg_type == PERL_MAGIC_uvar) {
+ Safefree(mg->mg_ptr);
+ } else {
+#endif /* VMG_UVAR */
+ if (mg->mg_obj != sv) {
+ SvREFCNT_dec(mg->mg_obj);
+ mg->mg_obj = NULL;
+ }
+ /* Unreference the wizard */
+ SvREFCNT_dec((SV *) mg->mg_ptr);
+ mg->mg_ptr = NULL;
+#if VMG_UVAR
}
- mg->mg_moremagic = NULL;
- Safefree(mg->mg_ptr);
- Safefree(mg);
-}
#endif /* VMG_UVAR */
-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;
+ if (XSH_CXT.depth) {
+ mg->mg_moremagic = XSH_CXT.freed_tokens;
+ XSH_CXT.freed_tokens = mg;
+ } else {
+ mg->mg_moremagic = NULL;
+ Safefree(mg);
+ }
+}
+
+static int vmg_magic_chain_free(pTHX_ MAGIC *mg, MAGIC *skip) {
+#define vmg_magic_chain_free(M, S) vmg_magic_chain_free(aTHX_ (M), (S))
+ int skipped = 0;
+
+ while (mg) {
+ MAGIC *moremagic = mg->mg_moremagic;
+
+ if (mg == skip)
+ ++skipped;
+ else
+ Safefree(mg);
+
+ mg = moremagic;
+ }
- if (vmg_find(sv, wiz))
+ return skipped;
+}
+
+static UV vmg_cast(pTHX_ SV *sv, const vmg_wizard *w, const SV *wiz, SV **args, I32 items) {
+#define vmg_cast(S, W, WIZ, A, I) vmg_cast(aTHX_ (S), (W), (WIZ), (A), (I))
+ MAGIC *mg;
+ MGVTBL *t;
+ SV *data;
+ U32 oldgmg;
+
+ if (vmg_find(sv, w))
return 1;
- w = vmg_wizard_mgwiz(wiz);
oldgmg = SvGMAGICAL(sv);
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 (w->cb_copy)
- mg->mg_flags |= MGf_COPY;
-#if 0
- if (w->cb_dup)
- mg->mg_flags |= MGf_DUP;
-#endif
-#if MGf_LOCAL
- if (w->cb_local)
- mg->mg_flags |= MGf_LOCAL;
-#endif /* MGf_LOCAL */
+
+ t = vmg_vtable_vtbl(w->vtable);
+ mg = vmg_sv_magicext(sv, data, t, wiz, HEf_SVKEY);
if (SvTYPE(sv) < SVt_PVHV)
goto done;
#if VMG_UVAR
if (w->uvar) {
MAGIC *prevmagic, *moremagic = NULL;
- struct ufuncs uf[2];
+ vmg_uvar_ud ud;
- uf[0].uf_val = vmg_svt_val;
- uf[0].uf_set = NULL;
- uf[0].uf_index = 0;
- uf[1].uf_val = NULL;
- uf[1].uf_set = NULL;
- uf[1].uf_index = 0;
+ ud.new_uf.uf_val = vmg_svt_val;
+ ud.new_uf.uf_set = NULL;
+ ud.new_uf.uf_index = 0;
+ ud.old_uf.uf_val = NULL;
+ ud.old_uf.uf_set = NULL;
+ ud.old_uf.uf_index = 0;
/* One uvar magic in the chain is enough. */
for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) {
}
if (mg) { /* Found another uvar magic. */
- struct ufuncs *olduf = (struct ufuncs *) mg->mg_ptr;
- if (olduf->uf_val == vmg_svt_val) {
+ struct ufuncs *uf = (struct ufuncs *) mg->mg_ptr;
+ if (uf->uf_val == vmg_svt_val) {
/* It's our uvar magic, nothing to do. oldgmg was true. */
goto done;
} else {
/* It's another uvar magic, backup it and replace it by ours. */
- uf[1] = *olduf;
- vmg_uvar_del(sv, prevmagic, mg, moremagic);
+ ud.old_uf = *uf;
+ vmg_mg_del(sv, prevmagic, mg, moremagic);
}
}
- sv_magic(sv, NULL, PERL_MAGIC_uvar, (const char *) &uf, sizeof(uf));
+ sv_magic(sv, NULL, PERL_MAGIC_uvar, (const char *) &ud, sizeof(ud));
vmg_mg_magical(sv);
/* Our hash now carries uvar magic. The uvar/clear shortcoming has to be
* handled by our uvar callback. */
return 1;
}
-STATIC UV vmg_dispell(pTHX_ SV *sv, const SV *wiz) {
+static UV vmg_dispell(pTHX_ SV *sv, const vmg_wizard *w) {
#define vmg_dispell(S, W) vmg_dispell(aTHX_ (S), (W))
#if VMG_UVAR
U32 uvars = 0;
#endif /* VMG_UVAR */
MAGIC *mg, *prevmagic, *moremagic = NULL;
- IV wid = vmg_wizard_id(wiz);
+ IV wid = vmg_wizard_id(w);
if (SvTYPE(sv) < SVt_PVMG)
return 0;
for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) {
+ const vmg_wizard *z;
+
moremagic = mg->mg_moremagic;
- if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
+
+ z = vmg_wizard_from_mg(mg);
+ if (z) {
+ IV zid = vmg_wizard_id(z);
+
#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 = z->uvar ? (uvars + 1) : 0;
-#endif /* VMG_UVAR */
break;
-#if VMG_UVAR
} else if (z->uvar) {
++uvars;
/* We can't break here since we need to find the ext magic to delete. */
-#endif /* VMG_UVAR */
}
+#else /* VMG_UVAR */
+ if (zid == wid)
+ break;
+#endif /* !VMG_UVAR */
}
}
if (!mg)
return 0;
- if (prevmagic) {
- prevmagic->mg_moremagic = moremagic;
- } else {
- SvMAGIC_set(sv, moremagic);
- }
- mg->mg_moremagic = NULL;
-
- /* Destroy private data */
- if (mg->mg_obj != sv)
- SvREFCNT_dec(mg->mg_obj);
- /* Unreference the wizard */
- SvREFCNT_dec((SV *) mg->mg_ptr);
- Safefree(mg);
+ vmg_mg_del(sv, prevmagic, mg, moremagic);
#if VMG_UVAR
if (uvars == 1 && SvTYPE(sv) >= SVt_PVHV) {
/* mg was the first ext magic in the chain that had uvar */
for (mg = moremagic; mg; mg = mg->mg_moremagic) {
- if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
- const MGWIZ *z = vmg_wizard_mgwiz(mg->mg_ptr);
- if (z->uvar) {
- ++uvars;
- break;
- }
+ const vmg_wizard *z = vmg_wizard_from_mg(mg);
+
+ if (z && z->uvar) {
+ ++uvars;
+ break;
}
}
if (uvars == 1) {
- struct ufuncs *uf;
+ vmg_uvar_ud *ud;
+
for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic){
moremagic = mg->mg_moremagic;
if (mg->mg_type == PERL_MAGIC_uvar)
break;
}
- /* assert(mg); */
- uf = (struct ufuncs *) mg->mg_ptr;
- /* assert(uf->uf_val == vmg_svt_val); */
- if (uf[1].uf_val || uf[1].uf_set) {
+
+ ud = (vmg_uvar_ud *) mg->mg_ptr;
+ if (ud->old_uf.uf_val || ud->old_uf.uf_set) {
/* Revert the original uvar magic. */
- uf[0] = uf[1];
- Renew(uf, 1, struct ufuncs);
+ struct ufuncs *uf;
+ Newx(uf, 1, struct ufuncs);
+ *uf = ud->old_uf;
+ Safefree(ud);
mg->mg_ptr = (char *) uf;
- mg->mg_len = sizeof(struct ufuncs);
+ mg->mg_len = sizeof(*uf);
} else {
/* Remove the uvar magic. */
- vmg_uvar_del(sv, prevmagic, mg, moremagic);
+ vmg_mg_del(sv, prevmagic, mg, moremagic);
}
}
}
#define VMG_OP_INFO_NAME 1
#define VMG_OP_INFO_OBJECT 2
-#if VMG_THREADSAFE
-STATIC perl_mutex vmg_op_name_init_mutex;
+#if XSH_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 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) {
+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
+ XSH_LOCK(&vmg_op_name_init_mutex);
if (!vmg_op_name_init) {
OPCODE t;
for (t = 0; t < OP_max; ++t)
vmg_op_name_len[t] = strlen(PL_op_name[t]);
vmg_op_name_init = 1;
}
-#if VMG_THREADSAFE
- MUTEX_UNLOCK(&vmg_op_name_init_mutex);
-#endif
+ XSH_UNLOCK(&vmg_op_name_init_mutex);
break;
case VMG_OP_INFO_OBJECT: {
- dMY_CXT;
- if (!MY_CXT.b__op_stashes[0]) {
+ dXSH_CXT;
+ if (!XSH_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);
+ XSH_CXT.b__op_stashes[c] = gv_stashpv(vmg_opclassnames[c], 1);
}
break;
}
}
}
-STATIC SV *vmg_op_info(pTHX_ unsigned int opinfo) {
+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]));
+ const char *name;
+ STRLEN name_len;
+ OPCODE t = PL_op->op_type;
+ name = OP_NAME(PL_op);
+ name_len = (t == OP_CUSTOM) ? strlen(name) : vmg_op_name_len[t];
+ return sv_2mortal(newSVpvn(name, name_len));
}
case VMG_OP_INFO_OBJECT: {
- dMY_CXT;
+ dXSH_CXT;
return sv_bless(sv_2mortal(newRV_noinc(newSViv(PTR2IV(PL_op)))),
- MY_CXT.b__op_stashes[vmg_opclass(PL_op)]);
+ XSH_CXT.b__op_stashes[vmg_opclass(PL_op)]);
}
default:
break;
return &PL_sv_undef;
}
-/* ... svt callbacks ....................................................... */
+/* --- svt callbacks ------------------------------------------------------- */
#define VMG_CB_CALL_ARGS_MASK 15
#define VMG_CB_CALL_ARGS_SHIFT 4
-#define VMG_CB_CALL_OPINFO (VMG_OP_INFO_NAME|VMG_OP_INFO_OBJECT)
+#define VMG_CB_CALL_OPINFO (VMG_OP_INFO_NAME|VMG_OP_INFO_OBJECT) /* 1|2 */
+#define VMG_CB_CALL_GUARD 4
+
+static int vmg_dispell_guard_oncroak(pTHX_ void *ud) {
+ dXSH_CXT;
+
+ XSH_CXT.depth--;
+
+ /* If we're at the upmost magic call and we're about to die, we can just free
+ * the tokens right now, since we will jump past the problematic part of our
+ * caller. */
+ if (XSH_CXT.depth == 0 && XSH_CXT.freed_tokens) {
+ vmg_magic_chain_free(XSH_CXT.freed_tokens, NULL);
+ XSH_CXT.freed_tokens = NULL;
+ }
+
+ return 1;
+}
+
+static int vmg_dispell_guard_free(pTHX_ SV *sv, MAGIC *mg) {
+ vmg_magic_chain_free((MAGIC *) mg->mg_ptr, NULL);
+
+ return 0;
+}
+
+#if XSH_THREADSAFE
+
+static int vmg_dispell_guard_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *params) {
+ /* The freed magic tokens aren't cloned by perl because it cannot reach them
+ * (they have been detached from their parent SV when they were enqueued).
+ * Hence there's nothing to purge in the new thread. */
+ mg->mg_ptr = NULL;
+
+ return 0;
+}
+
+#endif /* XSH_THREADSAFE */
+
+static MGVTBL vmg_dispell_guard_vtbl = {
+ NULL, /* get */
+ NULL, /* set */
+ NULL, /* len */
+ NULL, /* clear */
+ vmg_dispell_guard_free, /* free */
+ NULL, /* copy */
+#if XSH_THREADSAFE
+ vmg_dispell_guard_dup, /* dup */
+#else
+ NULL, /* dup */
+#endif
+#if MGf_LOCAL
+ NULL, /* local */
+#endif /* MGf_LOCAL */
+};
+
+static SV *vmg_dispell_guard_new(pTHX_ MAGIC *root) {
+#define vmg_dispell_guard_new(R) vmg_dispell_guard_new(aTHX_ (R))
+ SV *guard;
-STATIC int vmg_cb_call(pTHX_ SV *cb, unsigned int flags, SV *sv, ...) {
+ guard = sv_newmortal();
+ vmg_sv_magicext(guard, NULL, &vmg_dispell_guard_vtbl, root, 0);
+
+ return guard;
+}
+
+static int vmg_cb_call(pTHX_ SV *cb, unsigned int flags, SV *sv, ...) {
va_list ap;
int ret = 0;
unsigned int i, args, opinfo;
+ MAGIC **chain = NULL;
SV *svr;
dSP;
ENTER;
SAVETMPS;
+ PUSHSTACKi(PERLSI_MAGIC);
+
PUSHMARK(SP);
EXTEND(SP, args + 1);
PUSHs(sv_2mortal(newRV_inc(sv)));
XPUSHs(vmg_op_info(opinfo));
PUTBACK;
- vmg_call_sv(cb, G_SCALAR, 0);
+ if (flags & VMG_CB_CALL_GUARD) {
+ dXSH_CXT;
+ XSH_CXT.depth++;
+ vmg_call_sv(cb, G_SCALAR, vmg_dispell_guard_oncroak, NULL);
+ XSH_CXT.depth--;
+ if (XSH_CXT.depth == 0 && XSH_CXT.freed_tokens)
+ chain = &XSH_CXT.freed_tokens;
+ } else {
+ vmg_call_sv(cb, G_SCALAR, 0, NULL);
+ }
SPAGAIN;
svr = POPs;
if (SvOK(svr))
ret = (int) SvIV(svr);
+ if (SvROK(svr))
+ SvREFCNT_inc(svr);
+ else
+ svr = NULL;
PUTBACK;
+ POPSTACK;
+
FREETMPS;
LEAVE;
+ if (svr && !SvTEMP(svr))
+ sv_2mortal(svr);
+
+ if (chain) {
+ vmg_dispell_guard_new(*chain);
+ *chain = NULL;
+ }
+
return ret;
}
#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) {
- const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
+/* ... Default no-op magic callback ........................................ */
+
+static int vmg_svt_default_noop(pTHX_ SV *sv, MAGIC *mg) {
+ return 0;
+}
+
+/* ... get magic ........................................................... */
+
+static int vmg_svt_get(pTHX_ SV *sv, MAGIC *mg) {
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
+
return vmg_cb_call1(w->cb_get, w->opinfo, sv, mg->mg_obj);
}
-STATIC int vmg_svt_set(pTHX_ SV *sv, MAGIC *mg) {
- const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
+#define vmg_svt_get_noop vmg_svt_default_noop
+
+/* ... set magic ........................................................... */
+
+static int vmg_svt_set(pTHX_ SV *sv, MAGIC *mg) {
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
+
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);
+#define vmg_svt_set_noop vmg_svt_default_noop
+
+/* ... len magic ........................................................... */
+
+static U32 vmg_sv_len(pTHX_ SV *sv) {
+#define vmg_sv_len(S) vmg_sv_len(aTHX_ (S))
+ STRLEN len;
+#if XSH_HAS_PERL(5, 9, 3)
+ const U8 *s = VOID2(const U8 *, VOID2(const void *, SvPV_const(sv, len)));
+#else
+ U8 *s = SvPV(sv, len);
+#endif
+
+ return DO_UTF8(sv) ? utf8_length(s, s + len) : len;
+}
+
+static U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
unsigned int opinfo = w->opinfo;
U32 len, ret;
SV *svr;
ENTER;
SAVETMPS;
+ PUSHSTACKi(PERLSI_MAGIC);
+
PUSHMARK(SP);
EXTEND(SP, 3);
PUSHs(sv_2mortal(newRV_inc(sv)));
PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
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;
+ len = vmg_sv_len(sv);
mPUSHu(len);
} else if (t == SVt_PVAV) {
len = av_len((AV *) sv) + 1;
XPUSHs(vmg_op_info(opinfo));
PUTBACK;
- vmg_call_sv(w->cb_len, G_SCALAR, 0);
+ vmg_call_sv(w->cb_len, G_SCALAR, 0, NULL);
SPAGAIN;
svr = POPs;
--ret;
PUTBACK;
+ POPSTACK;
+
FREETMPS;
LEAVE;
return ret;
}
-STATIC int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) {
- const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
- return vmg_cb_call1(w->cb_clear, w->opinfo, sv, mg->mg_obj);
+static U32 vmg_svt_len_noop(pTHX_ SV *sv, MAGIC *mg) {
+ U32 len = 0;
+ svtype t = SvTYPE(sv);
+
+ if (t < SVt_PVAV) {
+ len = vmg_sv_len(sv);
+ } else if (t == SVt_PVAV) {
+ len = (U32) av_len((AV *) sv);
+ }
+
+ return len;
+}
+
+/* ... clear magic ......................................................... */
+
+static int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) {
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
+ unsigned int flags = w->opinfo;
+
+#if !XSH_HAS_PERL(5, 12, 0)
+ flags |= VMG_CB_CALL_GUARD;
+#endif
+
+ return vmg_cb_call1(w->cb_clear, flags, sv, mg->mg_obj);
+}
+
+#define vmg_svt_clear_noop vmg_svt_default_noop
+
+/* ... free magic .......................................................... */
+
+#if VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE
+
+static OP *vmg_pp_propagate_errsv(pTHX) {
+ SVOP *o = cSVOPx(PL_op);
+
+ if (o->op_sv) {
+ sv_setsv(ERRSV, o->op_sv);
+ SvREFCNT_dec(o->op_sv);
+ o->op_sv = NULL;
+ }
+
+ return NORMAL;
+}
+
+#endif /* VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE */
+
+static int vmg_propagate_errsv_free(pTHX_ SV *sv, MAGIC *mg) {
+ if (mg->mg_obj)
+ sv_setsv(ERRSV, mg->mg_obj);
+
+ return 0;
+}
+
+/* perl is already kind enough to handle the cloning of the mg_obj member,
+ hence we don't need to define a dup magic callback. */
+
+static MGVTBL vmg_propagate_errsv_vtbl = {
+ 0, /* get */
+ 0, /* set */
+ 0, /* len */
+ 0, /* clear */
+ vmg_propagate_errsv_free, /* free */
+ 0, /* copy */
+ 0, /* dup */
+#if MGf_LOCAL
+ 0, /* local */
+#endif /* MGf_LOCAL */
+};
+
+typedef struct {
+ SV *sv;
+#if VMG_CAREFUL_SELF_DESTRUCTION
+ SV *rsv; /* The ref to the sv currently being freed, pushed on the stack */
+#endif
+ int in_eval;
+ I32 base;
+} vmg_svt_free_cleanup_ud;
+
+static int vmg_svt_free_cleanup(pTHX_ void *ud_) {
+ vmg_svt_free_cleanup_ud *ud = VOID2(vmg_svt_free_cleanup_ud *, ud_);
+
+ if (ud->in_eval) {
+ U32 optype = PL_op ? PL_op->op_type : OP_NULL;
+
+ if (optype == OP_LEAVETRY || optype == OP_LEAVEEVAL) {
+ SV *errsv = newSVsv(ERRSV);
+
+ FREETMPS;
+ LEAVE_SCOPE(ud->base);
+
+#if VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE
+ if (optype == OP_LEAVETRY) {
+ dXSH_CXT;
+ PL_op = vmg_trampoline_bump(&XSH_CXT.propagate_errsv, errsv, PL_op);
+ } else if (optype == OP_LEAVEEVAL) {
+ SV *guard = sv_newmortal();
+ vmg_sv_magicext(guard, errsv, &vmg_propagate_errsv_vtbl, NULL, 0);
+ }
+#else /* !VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE */
+# if !XSH_HAS_PERL(5, 8, 9)
+ {
+ SV *guard = sv_newmortal();
+ vmg_sv_magicext(guard, errsv, &vmg_propagate_errsv_vtbl, NULL, 0);
+ }
+# else
+ vmg_sv_magicext(ERRSV, errsv, &vmg_propagate_errsv_vtbl, NULL, 0);
+# endif
+#endif /* VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE */
+
+ SAVETMPS;
+ }
+
+ /* Don't propagate */
+ return 0;
+ } else {
+ SV *sv = ud->sv;
+ MAGIC *mg;
+
+#if VMG_CAREFUL_SELF_DESTRUCTION
+ /* Silently undo the ref - don't trigger destruction in the referent
+ * for a second time */
+ if (SvROK(ud->rsv) && SvRV(ud->rsv) == sv) {
+ SvRV_set(ud->rsv, NULL);
+ SvROK_off(ud->rsv);
+ --SvREFCNT(sv); /* Silent */
+ }
+ SvREFCNT_dec_NN(ud->rsv);
+#endif
+
+ /* We are about to croak() while sv is being destroyed. Try to clean up
+ * things a bit. */
+ mg = SvMAGIC(sv);
+ if (mg) {
+ vmg_mg_del(sv, NULL, mg, mg->mg_moremagic);
+ mg_magical(sv);
+ }
+ SvREFCNT_dec(sv); /* Re-trigger destruction */
+
+ vmg_dispell_guard_oncroak(aTHX_ NULL);
+
+ /* After that, propagate the error upwards. */
+ return 1;
+ }
}
-STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
- const MGWIZ *w;
+static int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
+ vmg_svt_free_cleanup_ud ud;
+ const vmg_wizard *w;
int ret = 0;
SV *svr;
dSP;
- /* Don't even bother if we are in global destruction - the wizard is prisoner
- * of circular references and we are way beyond user realm */
+ /* During global destruction, we cannot be sure that the wizard and its free
+ * callback are still alive. */
if (PL_dirty)
return 0;
- w = vmg_wizard_mgwiz(mg->mg_ptr);
+ w = vmg_wizard_from_mg_nocheck(mg);
/* 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))
+#if !(XSH_HAS_PERL_MAINT(5, 11, 0, 32686) || XSH_HAS_PERL(5, 12, 0))
/* The previous magic tokens were freed but the magic chain wasn't updated, so
* if you access the sv from the callback the old deleted magics will trigger
* and cause memory misreads. Change 32686 solved it that way : */
SvMAGIC_set(sv, mg);
#endif
+ ud.sv = sv;
+ if (cxstack_ix < cxstack_max) {
+ ud.in_eval = (CxTYPE(cxstack + cxstack_ix + 1) == CXt_EVAL);
+ ud.base = ud.in_eval ? PL_scopestack[PL_scopestack_ix] : 0;
+ } else {
+ ud.in_eval = 0;
+ ud.base = 0;
+ }
+
ENTER;
SAVETMPS;
+ PUSHSTACKi(PERLSI_MAGIC);
+
PUSHMARK(SP);
EXTEND(SP, 2);
+ /* This will bump the refcount of sv from 0 to 1 */
+#if VMG_CAREFUL_SELF_DESTRUCTION
+ ud.rsv = newRV_inc(sv);
+ PUSHs(ud.rsv);
+#else
PUSHs(sv_2mortal(newRV_inc(sv)));
+#endif
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);
+ {
+ dXSH_CXT;
+ XSH_CXT.depth++;
+ vmg_call_sv(w->cb_free, G_SCALAR, vmg_svt_free_cleanup, &ud);
+ XSH_CXT.depth--;
+ if (XSH_CXT.depth == 0 && XSH_CXT.freed_tokens) {
+ /* Free all the tokens in the chain but the current one (if it's present).
+ * It will be taken care of by our caller, Perl_mg_free(). */
+ vmg_magic_chain_free(XSH_CXT.freed_tokens, mg);
+ XSH_CXT.freed_tokens = NULL;
+ }
+ }
SPAGAIN;
svr = POPs;
ret = (int) SvIV(svr);
PUTBACK;
+ POPSTACK;
+
+#if VMG_CAREFUL_SELF_DESTRUCTION
+ /* Silently undo the ref - don't trigger destruction in the referent
+ * for a second time */
+ if (SvROK(ud.rsv) && SvRV(ud.rsv) == sv) {
+ SvRV_set(ud.rsv, NULL);
+ SvROK_off(ud.rsv);
+ --SvREFCNT(sv); /* Silent */
+ }
+ SvREFCNT_dec_NN(ud.rsv);
+#endif
+
FREETMPS;
LEAVE;
return ret;
}
-STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key,
-# if VMG_HAS_PERL_MAINT(5, 11, 0, 33256) || VMG_HAS_PERL(5, 12, 0)
- I32 keylen
-# else
- int keylen
-# endif
- ) {
+#define vmg_svt_free_noop vmg_svt_default_noop
+
+#if XSH_HAS_PERL_MAINT(5, 11, 0, 33256) || XSH_HAS_PERL(5, 12, 0)
+# define VMG_SVT_COPY_KEYLEN_TYPE I32
+#else
+# define VMG_SVT_COPY_KEYLEN_TYPE int
+#endif
+
+/* ... copy magic .......................................................... */
+
+static int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key, VMG_SVT_COPY_KEYLEN_TYPE keylen) {
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
SV *keysv;
- const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
int ret;
if (keylen == HEf_SVKEY) {
keysv = newSVpvn(key, keylen);
}
+ if (SvTYPE(sv) >= SVt_PVCV)
+ nsv = sv_2mortal(newRV_inc(nsv));
+
ret = vmg_cb_call3(w->cb_copy, w->opinfo, sv, mg->mg_obj, keysv, nsv);
if (keylen != HEf_SVKEY) {
return ret;
}
+static int vmg_svt_copy_noop(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key, VMG_SVT_COPY_KEYLEN_TYPE keylen) {
+ return 0;
+}
+
+/* ... dup magic ........................................................... */
+
#if 0
-STATIC int vmg_svt_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) {
+static int vmg_svt_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) {
return 0;
}
+#define vmg_svt_dup_noop vmg_svt_dup
#endif
+/* ... local magic ......................................................... */
+
#if MGf_LOCAL
-STATIC int vmg_svt_local(pTHX_ SV *nsv, MAGIC *mg) {
- const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
+
+static int vmg_svt_local(pTHX_ SV *nsv, MAGIC *mg) {
+ const vmg_wizard *w = vmg_wizard_from_mg_nocheck(mg);
+
return vmg_cb_call1(w->cb_local, w->opinfo, nsv, mg->mg_obj);
}
+
+#define vmg_svt_local_noop vmg_svt_default_noop
+
#endif /* MGf_LOCAL */
+/* ... uvar magic .......................................................... */
+
#if VMG_UVAR
-STATIC OP *vmg_pp_resetuvar(pTHX) {
- SvRMAGICAL_on(cSVOP_sv);
+
+static OP *vmg_pp_reset_rmg(pTHX) {
+ SVOP *o = cSVOPx(PL_op);
+
+ SvRMAGICAL_on(o->op_sv);
+ o->op_sv = NULL;
+
return NORMAL;
}
-STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
- struct ufuncs *uf;
- MAGIC *mg, *umg;
+static I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
+ vmg_uvar_ud *ud;
+ MAGIC *mg, *umg, *moremagic;
SV *key = NULL, *newkey = NULL;
int tied = 0;
umg = mg_find(sv, PERL_MAGIC_uvar);
/* umg can't be NULL or we wouldn't be there. */
key = umg->mg_obj;
- uf = (struct ufuncs *) umg->mg_ptr;
+ ud = (vmg_uvar_ud *) umg->mg_ptr;
- if (uf[1].uf_val)
- uf[1].uf_val(aTHX_ action, sv);
- if (uf[1].uf_set)
- uf[1].uf_set(aTHX_ action, sv);
+ if (ud->old_uf.uf_val)
+ ud->old_uf.uf_val(aTHX_ action, sv);
+ if (ud->old_uf.uf_set)
+ ud->old_uf.uf_set(aTHX_ action, sv);
+
+ for (mg = SvMAGIC(sv); mg; mg = moremagic) {
+ const vmg_wizard *w;
+
+ /* mg may be freed later by the uvar call, so we need to fetch the next
+ * token before reaching that fateful point. */
+ moremagic = mg->mg_moremagic;
- action &= HV_FETCH_ISSTORE | HV_FETCH_ISEXISTS | HV_FETCH_LVALUE | HV_DELETE;
- for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
- const MGWIZ *w;
switch (mg->mg_type) {
case PERL_MAGIC_ext:
break;
default:
continue;
}
- if (mg->mg_private != SIG_WIZ) continue;
- w = vmg_wizard_mgwiz(mg->mg_ptr);
+
+ w = vmg_wizard_from_mg(mg);
+ if (!w)
+ continue;
+
switch (w->uvar) {
case 0:
continue;
if (!newkey)
newkey = key = umg->mg_obj = sv_mortalcopy(umg->mg_obj);
}
- switch (action) {
+
+ switch (action
+ & (HV_FETCH_ISSTORE|HV_FETCH_ISEXISTS|HV_FETCH_LVALUE|HV_DELETE)) {
case 0:
if (w->cb_fetch)
- vmg_cb_call2(w->cb_fetch, w->opinfo, sv, mg->mg_obj, key);
+ vmg_cb_call2(w->cb_fetch, w->opinfo | VMG_CB_CALL_GUARD, sv,
+ mg->mg_obj, key);
break;
case HV_FETCH_ISSTORE:
case HV_FETCH_LVALUE:
case (HV_FETCH_ISSTORE|HV_FETCH_LVALUE):
if (w->cb_store)
- vmg_cb_call2(w->cb_store, w->opinfo, sv, mg->mg_obj, key);
+ vmg_cb_call2(w->cb_store, w->opinfo | VMG_CB_CALL_GUARD, sv,
+ mg->mg_obj, key);
break;
case HV_FETCH_ISEXISTS:
if (w->cb_exists)
- vmg_cb_call2(w->cb_exists, w->opinfo, sv, mg->mg_obj, key);
+ vmg_cb_call2(w->cb_exists, w->opinfo | VMG_CB_CALL_GUARD, sv,
+ mg->mg_obj, key);
break;
case HV_DELETE:
if (w->cb_delete)
- vmg_cb_call2(w->cb_delete, w->opinfo, sv, mg->mg_obj, key);
+ vmg_cb_call2(w->cb_delete, w->opinfo | VMG_CB_CALL_GUARD, sv,
+ mg->mg_obj, key);
break;
}
}
- if (SvRMAGICAL(sv) && !tied) {
+ if (SvRMAGICAL(sv) && !tied && !(action & (HV_FETCH_ISSTORE|HV_DELETE))) {
/* Temporarily hide the RMAGICAL flag of the hash so it isn't wrongly
* mistaken for a tied hash by the rest of hv_common. It will be reset by
* the op_ppaddr of a new fake op injected between the current and the next
* one. */
- OP *o = PL_op;
- if (!o->op_next || o->op_next->op_ppaddr != vmg_pp_resetuvar) {
- SVOP *svop;
+
+#if VMG_RESET_RMG_NEEDS_TRAMPOLINE
+
+ dXSH_CXT;
+
+ PL_op = vmg_trampoline_bump(&XSH_CXT.reset_rmg, sv, PL_op);
+
+#else /* !VMG_RESET_RMG_NEEDS_TRAMPOLINE */
+
+ OP *nop = PL_op->op_next;
+ SVOP *svop = NULL;
+
+ if (nop && nop->op_ppaddr == vmg_pp_reset_rmg) {
+ svop = (SVOP *) nop;
+ } else {
NewOp(1101, svop, 1, SVOP);
- svop->op_type = OP_STUB;
- svop->op_ppaddr = vmg_pp_resetuvar;
- svop->op_next = o->op_next;
- svop->op_flags = 0;
- svop->op_sv = sv;
- o->op_next = (OP *) svop;
+ svop->op_type = OP_STUB;
+ svop->op_ppaddr = vmg_pp_reset_rmg;
+ svop->op_next = nop;
+ svop->op_flags = 0;
+ svop->op_private = 0;
+
+ PL_op->op_next = (OP *) svop;
}
+
+ svop->op_sv = sv;
+
+#endif /* VMG_RESET_RMG_NEEDS_TRAMPOLINE */
+
SvRMAGICAL_off(sv);
}
return 0;
}
-#endif /* VMG_UVAR */
-/* --- Macros for the XS section ------------------------------------------- */
+#endif /* VMG_UVAR */
-#define VMG_SET_CB(S, N) \
- cb = (S); \
- 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 = SvREFCNT_inc(SvRV(cb)); \
- } else { \
- t->svt_ ## N = NULL; \
- w->cb_ ## N = NULL; \
- }
+/* --- Module setup/teardown ----------------------------------------------- */
-#if VMG_THREADSAFE
+#if XSH_THREADSAFE
-STATIC void vmg_cleanup(pTHX_ void *ud) {
- dMY_CXT;
+static void vmg_global_teardown_late_locked(pTHX_ void *ud) {
+#define vmg_global_teardown_late_locked(UD) vmg_global_teardown_late_locked(aTHX_ (UD))
+ MUTEX_DESTROY(&vmg_op_name_init_mutex);
+ MUTEX_DESTROY(&vmg_vtable_refcount_mutex);
- ptable_free(MY_CXT.wizards);
- MY_CXT.wizards = NULL;
+ return;
}
-#endif /* VMG_THREADSAFE */
+static signed char vmg_destruct_level(pTHX) {
+#define vmg_destruct_level() vmg_destruct_level(aTHX)
+ signed char lvl;
-/* --- XS ------------------------------------------------------------------ */
+ lvl = PL_perl_destruct_level;
-MODULE = Variable::Magic PACKAGE = Variable::Magic
+#ifdef DEBUGGING
+ {
+ const char *s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
+ if (s) {
+ int i;
+#if XSH_HAS_PERL(5, 21, 3)
+ if (strEQ(s, "-1")) {
+ i = -1;
+ } else {
+# if XSH_HAS_PERL(5, 21, 10)
+ UV uv;
+ if (Perl_grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
+ i = (int) uv;
+ else
+ i = 0;
+# else /* XSH_HAS_PERL(5, 21, 3) && !XSH_HAS_PERL(5, 21, 10) */
+ i = Perl_grok_atou(s, NULL);
+# endif
+ }
+#else /* !XSH_HAS_PERL(5, 21, 3) */
+ i = atoi(s);
+#endif
+ if (lvl < i)
+ lvl = i;
+ }
+ }
+#endif
-PROTOTYPES: ENABLE
+ return lvl;
+}
-BOOT:
-{
+#endif /* XSH_THREADSAFE */
+
+static void xsh_user_global_setup(pTHX) {
+#if XSH_THREADSAFE
+ MUTEX_INIT(&vmg_vtable_refcount_mutex);
+ MUTEX_INIT(&vmg_op_name_init_mutex);
+#endif
+
+ return;
+}
+
+static void xsh_user_local_setup(pTHX_ xsh_user_cxt_t *cxt) {
HV *stash;
+ int c;
+
+ for (c = OPc_NULL; c < OPc_MAX; ++c)
+ cxt->b__op_stashes[c] = NULL;
+
+ cxt->depth = 0;
+ cxt->freed_tokens = NULL;
- MY_CXT_INIT;
-#if VMG_THREADSAFE
- MY_CXT.wizards = ptable_new();
- MY_CXT.owner = aTHX;
+#if VMG_PROPAGATE_ERRSV_NEEDS_TRAMPOLINE
+ vmg_trampoline_init(&cxt->propagate_errsv, vmg_pp_propagate_errsv);
#endif
- MY_CXT.b__op_stashes[0] = NULL;
-#if VMG_THREADSAFE
- MUTEX_INIT(&vmg_op_name_init_mutex);
- call_atexit(vmg_cleanup, NULL);
+#if VMG_RESET_RMG_NEEDS_TRAMPOLINE
+ vmg_trampoline_init(&cxt->reset_rmg, vmg_pp_reset_rmg);
#endif
- stash = gv_stashpv(__PACKAGE__, 1);
+ stash = gv_stashpv(XSH_PACKAGE, 1);
newCONSTSUB(stash, "MGf_COPY", newSVuv(MGf_COPY));
newCONSTSUB(stash, "MGf_DUP", newSVuv(MGf_DUP));
newCONSTSUB(stash, "MGf_LOCAL", newSVuv(MGf_LOCAL));
newCONSTSUB(stash, "VMG_UVAR", newSVuv(VMG_UVAR));
+ newCONSTSUB(stash, "VMG_COMPAT_SCALAR_LENGTH_NOLEN",
+ newSVuv(VMG_COMPAT_SCALAR_LENGTH_NOLEN));
+ newCONSTSUB(stash, "VMG_COMPAT_SCALAR_NOLEN",
+ newSVuv(VMG_COMPAT_SCALAR_NOLEN));
newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN",
newSVuv(VMG_COMPAT_ARRAY_PUSH_NOLEN));
newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID",
newSVuv(VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID));
newCONSTSUB(stash, "VMG_COMPAT_ARRAY_UNDEF_CLEAR",
newSVuv(VMG_COMPAT_ARRAY_UNDEF_CLEAR));
- newCONSTSUB(stash, "VMG_COMPAT_SCALAR_LENGTH_NOLEN",
- newSVuv(VMG_COMPAT_SCALAR_LENGTH_NOLEN));
+ newCONSTSUB(stash, "VMG_COMPAT_HASH_DELETE_NOUVAR_VOID",
+ newSVuv(VMG_COMPAT_HASH_DELETE_NOUVAR_VOID));
+ newCONSTSUB(stash, "VMG_COMPAT_CODE_COPY_CLONE",
+ newSVuv(VMG_COMPAT_CODE_COPY_CLONE));
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_PERL_PATCHLEVEL", newSVuv(XSH_PERL_PATCHLEVEL));
+ newCONSTSUB(stash, "VMG_THREADSAFE", newSVuv(XSH_THREADSAFE));
+ newCONSTSUB(stash, "VMG_FORKSAFE", newSVuv(XSH_FORKSAFE));
newCONSTSUB(stash, "VMG_OP_INFO_NAME", newSVuv(VMG_OP_INFO_NAME));
newCONSTSUB(stash, "VMG_OP_INFO_OBJECT", newSVuv(VMG_OP_INFO_OBJECT));
+
+ return;
+}
+
+static void xsh_user_local_teardown(pTHX_ xsh_user_cxt_t *cxt) {
+ if (cxt->depth == 0 && cxt->freed_tokens) {
+ vmg_magic_chain_free(cxt->freed_tokens, NULL);
+ cxt->freed_tokens = NULL;
+ }
+
+ return;
+}
+
+static void xsh_user_global_teardown(pTHX) {
+#if XSH_THREADSAFE
+ if (vmg_destruct_level() == 0)
+ vmg_global_teardown_late_locked(NULL);
+ else
+ xsh_teardown_late_register(vmg_global_teardown_late_locked, NULL);
+#endif
+
+ return;
+}
+
+/* --- Macros for the XS section ------------------------------------------- */
+
+#ifdef CvISXSUB
+# define VMG_CVOK(C) \
+ ((CvISXSUB(C) ? (void *) CvXSUB(C) : (void *) CvROOT(C)) ? 1 : 0)
+#else
+# define VMG_CVOK(C) (CvROOT(C) || CvXSUB(C))
+#endif
+
+#define VMG_CBOK(S) ((SvTYPE(S) == SVt_PVCV) ? VMG_CVOK(S) : SvOK(S))
+
+#define VMG_SET_CB(S, N) { \
+ SV *cb = (S); \
+ if (SvOK(cb) && SvROK(cb)) { \
+ cb = SvRV(cb); \
+ if (VMG_CBOK(cb)) \
+ SvREFCNT_inc_simple_void(cb); \
+ else \
+ cb = NULL; \
+ } else { \
+ cb = NULL; \
+ } \
+ w->cb_ ## N = cb; \
}
-#if VMG_THREADSAFE
+#define VMG_SET_SVT_CB(S, N) { \
+ SV *cb = (S); \
+ if (SvOK(cb) && SvROK(cb)) { \
+ cb = SvRV(cb); \
+ if (VMG_CBOK(cb)) { \
+ t->svt_ ## N = vmg_svt_ ## N; \
+ SvREFCNT_inc_simple_void(cb); \
+ } else { \
+ t->svt_ ## N = vmg_svt_ ## N ## _noop; \
+ cb = NULL; \
+ } \
+ } else { \
+ t->svt_ ## N = NULL; \
+ cb = NULL; \
+ } \
+ w->cb_ ## N = cb; \
+}
+
+/* --- XS ------------------------------------------------------------------ */
+
+MODULE = Variable::Magic PACKAGE = Variable::Magic
+
+PROTOTYPES: ENABLE
+
+BOOT:
+{
+ xsh_setup();
+}
+
+#if XSH_THREADSAFE
void
CLONE(...)
PROTOTYPE: DISABLE
-PREINIT:
- ptable *t;
- U32 had_b__op_stash = 0;
- int c;
PPCODE:
- {
- my_cxt_t ud;
- dMY_CXT;
-
- 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.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;
- }
- }
+ xsh_clone();
XSRETURN(0);
-#endif /* VMG_THREADSAFE */
+#endif /* XSH_THREADSAFE */
SV *_wizard(...)
PROTOTYPE: DISABLE
PREINIT:
- I32 i = 0;
- MGWIZ *w;
+ vmg_wizard *w;
MGVTBL *t;
- SV *cb, *op_info, *copy_key;
+ SV *op_info, *copy_key;
+ I32 i = 0;
CODE:
- dMY_CXT;
-
if (items != 9
#if MGf_LOCAL
+ 1
) { croak(vmg_wrongargnum); }
op_info = ST(i++);
- w = vmg_mgwiz_alloc(SvOK(op_info) ? SvUV(op_info) : 0);
- t = w->vtbl;
+ w = vmg_wizard_alloc(SvOK(op_info) ? SvUV(op_info) : 0);
+ t = vmg_vtable_vtbl(w->vtable);
VMG_SET_CB(ST(i++), data);
if (w->cb_fetch || w->cb_store || w->cb_exists || w->cb_delete)
w->uvar = SvTRUE(copy_key) ? 2 : 1;
#endif /* VMG_UVAR */
-#if VMG_MULTIPLICITY
- w->owner = aTHX;
-#endif /* VMG_MULTIPLICITY */
-#if VMG_THREADSAFE
- ptable_store(MY_CXT.wizards, w, w);
-#endif /* VMG_THREADSAFE */
-
- RETVAL = newRV_noinc(vmg_wizard_new(w));
+
+ RETVAL = newRV_noinc(vmg_wizard_sv_new(w));
OUTPUT:
RETVAL
SV *cast(SV *sv, SV *wiz, ...)
PROTOTYPE: \[$@%&*]$@
PREINIT:
+ const vmg_wizard *w = NULL;
SV **args = NULL;
I32 i = 0;
CODE:
i = items - 2;
args = &ST(2);
}
- RETVAL = newSVuv(vmg_cast(SvRV(sv), vmg_wizard_validate(wiz), args, i));
+ if (SvROK(wiz)) {
+ wiz = SvRV_const(wiz);
+ w = vmg_wizard_from_sv(wiz);
+ }
+ if (!w)
+ croak(vmg_invalid_wiz);
+ RETVAL = newSVuv(vmg_cast(SvRV(sv), w, wiz, args, i));
OUTPUT:
RETVAL
getdata(SV *sv, SV *wiz)
PROTOTYPE: \[$@%&*]$
PREINIT:
+ const vmg_wizard *w = NULL;
SV *data;
PPCODE:
- data = vmg_data_get(SvRV(sv), vmg_wizard_validate(wiz));
+ if (SvROK(wiz))
+ w = vmg_wizard_from_sv(SvRV_const(wiz));
+ if (!w)
+ croak(vmg_invalid_wiz);
+ data = vmg_data_get(SvRV(sv), w);
if (!data)
XSRETURN_EMPTY;
ST(0) = data;
SV *dispell(SV *sv, SV *wiz)
PROTOTYPE: \[$@%&*]$
+PREINIT:
+ const vmg_wizard *w = NULL;
CODE:
- RETVAL = newSVuv(vmg_dispell(SvRV(sv), vmg_wizard_validate(wiz)));
+ if (SvROK(wiz))
+ w = vmg_wizard_from_sv(SvRV_const(wiz));
+ if (!w)
+ croak(vmg_invalid_wiz);
+ RETVAL = newSVuv(vmg_dispell(SvRV(sv), w));
OUTPUT:
RETVAL
projects / perl / modules / Variable-Magic.git / blobdiff