# define MY_CXT_CLONE NOOP
#endif
+#if A_THREADSAFE
+/* We must use preexistent global mutexes or we will never be able to destroy
+ * them. */
+# if A_HAS_PERL(5, 9, 3)
+# define A_LOADED_LOCK MUTEX_LOCK(&PL_my_ctx_mutex)
+# define A_LOADED_UNLOCK MUTEX_UNLOCK(&PL_my_ctx_mutex)
+# else
+# define A_LOADED_LOCK OP_REFCNT_LOCK
+# define A_LOADED_UNLOCK OP_REFCNT_UNLOCK
+# endif
+#else
+# define A_LOADED_LOCK NOOP
+# define A_LOADED_UNLOCK NOOP
+#endif
+
#if defined(OP_CHECK_MUTEX_LOCK) && defined(OP_CHECK_MUTEX_UNLOCK)
# define A_CHECK_LOCK OP_CHECK_MUTEX_LOCK
# define A_CHECK_UNLOCK OP_CHECK_MUTEX_UNLOCK
-#else
+#elif A_HAS_PERL(5, 9, 3)
# define A_CHECK_LOCK OP_REFCNT_LOCK
# define A_CHECK_UNLOCK OP_REFCNT_UNLOCK
+#else
+/* Before perl 5.9.3, indirect_ck_*() calls are already protected by the
+ * A_LOADED mutex, which falls back to the OP_REFCNT mutex. Make sure we don't
+ * lock it twice. */
+# define A_CHECK_LOCK NOOP
+# define A_CHECK_UNLOCK NOOP
#endif
typedef OP *(*a_ck_t)(pTHX_ OP *);
/* --- Helpers ------------------------------------------------------------- */
+/* ... Check if the module is loaded ....................................... */
+
+static I32 a_loaded = 0;
+
+#if A_THREADSAFE
+
+#define PTABLE_NAME ptable_loaded
+#define PTABLE_VAL_FREE(V) NOOP
+
+#include "ptable.h"
+
+#define ptable_loaded_store(T, K, V) ptable_loaded_store(aPTBLMS_ (T), (K), (V))
+#define ptable_loaded_delete(T, K) ptable_loaded_delete(aPTBLMS_ (T), (K))
+#define ptable_loaded_free(T) ptable_loaded_free(aPTBLMS_ (T))
+
+static ptable *a_loaded_cxts = NULL;
+
+static int a_is_loaded(pTHX_ void *cxt) {
+#define a_is_loaded(C) a_is_loaded(aTHX_ (C))
+ int res = 0;
+
+ A_LOADED_LOCK;
+ if (a_loaded_cxts && ptable_fetch(a_loaded_cxts, cxt))
+ res = 1;
+ A_LOADED_UNLOCK;
+
+ return res;
+}
+
+static int a_set_loaded_locked(pTHX_ void *cxt) {
+#define a_set_loaded_locked(C) a_set_loaded_locked(aTHX_ (C))
+ int global_setup = 0;
+
+ if (a_loaded <= 0) {
+ assert(a_loaded == 0);
+ assert(!a_loaded_cxts);
+ a_loaded_cxts = ptable_new();
+ global_setup = 1;
+ }
+ ++a_loaded;
+ assert(a_loaded_cxts);
+ ptable_loaded_store(a_loaded_cxts, cxt, cxt);
+
+ return global_setup;
+}
+
+static int a_clear_loaded_locked(pTHX_ void *cxt) {
+#define a_clear_loaded_locked(C) a_clear_loaded_locked(aTHX_ (C))
+ int global_teardown = 0;
+
+ if (a_loaded > 1) {
+ assert(a_loaded_cxts);
+ ptable_loaded_delete(a_loaded_cxts, cxt);
+ --a_loaded;
+ } else if (a_loaded_cxts) {
+ assert(a_loaded == 1);
+ ptable_loaded_free(a_loaded_cxts);
+ a_loaded_cxts = NULL;
+ a_loaded = 0;
+ global_teardown = 1;
+ }
+
+ return global_teardown;
+}
+
+#else
+
+#define a_is_loaded(C) (a_loaded > 0)
+#define a_set_loaded_locked(C) ((a_loaded++ <= 0) ? 1 : 0)
+#define a_clear_loaded_locked(C) ((--a_loaded <= 0) ? 1 : 0)
+
+#endif
+
/* ... Thread-safe hints ................................................... */
#if A_WORKAROUND_REQUIRE_PROPAGATION
#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
typedef struct {
+ peep_t old_peep; /* This is actually the rpeep past 5.13.5 */
+ ptable *seen; /* It really is a ptable_seen */
#if A_THREADSAFE && A_WORKAROUND_REQUIRE_PROPAGATION
- ptable *tbl; /* It really is a ptable_hints */
+ ptable *tbl; /* It really is a ptable_hints */
tTHX owner;
#endif /* A_THREADSAFE && A_WORKAROUND_REQUIRE_PROPAGATION */
- ptable *seen; /* It really is a ptable_seen */
} my_cxt_t;
START_MY_CXT
-#if A_THREADSAFE
-
#if A_WORKAROUND_REQUIRE_PROPAGATION
+#if A_THREADSAFE
+
typedef struct {
ptable *tbl;
#if A_HAS_PERL(5, 13, 2)
ptable_hints_store(ud->tbl, ent->key, h2);
}
-#endif /* A_WORKAROUND_REQUIRE_PROPAGATION */
-
-static void a_thread_cleanup(pTHX_ void *ud) {
- dMY_CXT;
-
-#if A_WORKAROUND_REQUIRE_PROPAGATION
- ptable_hints_free(MY_CXT.tbl);
- MY_CXT.tbl = NULL;
-#endif /* A_WORKAROUND_REQUIRE_PROPAGATION */
- ptable_seen_free(MY_CXT.seen);
- MY_CXT.seen = NULL;
-}
-
-static int a_endav_free(pTHX_ SV *sv, MAGIC *mg) {
- SAVEDESTRUCTOR_X(a_thread_cleanup, NULL);
-
- return 0;
-}
-
-static MGVTBL a_endav_vtbl = {
- 0,
- 0,
- 0,
- 0,
- a_endav_free
-#if MGf_COPY
- , 0
-#endif
-#if MGf_DUP
- , 0
-#endif
-#if MGf_LOCAL
- , 0
-#endif
-};
-
#endif /* A_THREADSAFE */
-#if A_WORKAROUND_REQUIRE_PROPAGATION
-
static IV a_require_tag(pTHX) {
#define a_require_tag() a_require_tag(aTHX)
const CV *cv, *outside;
#define A_HINT_ROOT 64
#define A_HINT_DEREF 128
-static U32 a_hash = 0;
+static VOL U32 a_hash = 0;
static UV a_hint(pTHX) {
#define a_hint() a_hint(aTHX)
/* ... Our peephole optimizer .............................................. */
-static peep_t a_old_peep = 0; /* This is actually the rpeep past 5.13.5 */
-
static void a_peep_rec(pTHX_ OP *o, ptable *seen);
static void a_peep_rec(pTHX_ OP *o, ptable *seen) {
}
static void a_peep(pTHX_ OP *o) {
+ ptable *seen;
dMY_CXT;
- ptable *seen = MY_CXT.seen;
- a_old_peep(aTHX_ o);
+ assert(a_is_loaded(&MY_CXT));
+
+ MY_CXT.old_peep(aTHX_ o);
+ seen = MY_CXT.seen;
if (seen) {
ptable_seen_clear(seen);
a_peep_rec(o);
}
}
-/* --- Interpreter setup/teardown ------------------------------------------ */
-
-static U32 a_initialized = 0;
+/* --- Module setup/teardown ----------------------------------------------- */
static void a_teardown(pTHX_ void *root) {
+ dMY_CXT;
- if (!a_initialized)
- return;
+ A_LOADED_LOCK;
-#if A_MULTIPLICITY
- if (aTHX != root)
- return;
-#endif
+ if (a_clear_loaded_locked(&MY_CXT)) {
+ a_ck_restore(OP_PADANY, &a_old_ck_padany);
+ a_ck_restore(OP_PADSV, &a_old_ck_padsv);
- {
- dMY_CXT;
-# if A_THREADSAFE && A_WORKAROUND_REQUIRE_PROPAGATION
- ptable_hints_free(MY_CXT.tbl);
- MY_CXT.tbl = NULL;
-# endif /* A_THREADSAFE && A_WORKAROUND_REQUIRE_PROPAGATION */
- ptable_seen_free(MY_CXT.seen);
- MY_CXT.seen = NULL;
- }
+ a_ck_restore(OP_AELEM, &a_old_ck_aelem);
+ a_ck_restore(OP_HELEM, &a_old_ck_helem);
+ a_ck_restore(OP_RV2SV, &a_old_ck_rv2sv);
- a_ck_restore(OP_PADANY, &a_old_ck_padany);
- a_ck_restore(OP_PADSV, &a_old_ck_padsv);
+ a_ck_restore(OP_RV2AV, &a_old_ck_rv2av);
+ a_ck_restore(OP_RV2HV, &a_old_ck_rv2hv);
- a_ck_restore(OP_AELEM, &a_old_ck_aelem);
- a_ck_restore(OP_HELEM, &a_old_ck_helem);
- a_ck_restore(OP_RV2SV, &a_old_ck_rv2sv);
+ a_ck_restore(OP_ASLICE, &a_old_ck_aslice);
+ a_ck_restore(OP_HSLICE, &a_old_ck_hslice);
- a_ck_restore(OP_RV2AV, &a_old_ck_rv2av);
- a_ck_restore(OP_RV2HV, &a_old_ck_rv2hv);
+ a_ck_restore(OP_EXISTS, &a_old_ck_exists);
+ a_ck_restore(OP_DELETE, &a_old_ck_delete);
+ a_ck_restore(OP_KEYS, &a_old_ck_keys);
+ a_ck_restore(OP_VALUES, &a_old_ck_values);
- a_ck_restore(OP_ASLICE, &a_old_ck_aslice);
- a_ck_restore(OP_HSLICE, &a_old_ck_hslice);
+ ptable_map_free(a_op_map);
+ a_op_map = NULL;
+ }
- a_ck_restore(OP_EXISTS, &a_old_ck_exists);
- a_ck_restore(OP_DELETE, &a_old_ck_delete);
- a_ck_restore(OP_KEYS, &a_old_ck_keys);
- a_ck_restore(OP_VALUES, &a_old_ck_values);
+ A_LOADED_UNLOCK;
+ if (MY_CXT.old_peep) {
#if A_HAS_RPEEP
- PL_rpeepp = a_old_peep;
+ PL_rpeepp = MY_CXT.old_peep;
#else
- PL_peepp = a_old_peep;
+ PL_peepp = MY_CXT.old_peep;
#endif
- a_old_peep = 0;
+ MY_CXT.old_peep = 0;
+ }
+
+ ptable_seen_free(MY_CXT.seen);
+ MY_CXT.seen = NULL;
+
+#if A_THREADSAFE && A_WORKAROUND_REQUIRE_PROPAGATION
+ ptable_hints_free(MY_CXT.tbl);
+ MY_CXT.tbl = NULL;
+#endif /* A_THREADSAFE && A_WORKAROUND_REQUIRE_PROPAGATION */
- a_initialized = 0;
+ return;
}
static void a_setup(pTHX) {
#define a_setup() a_setup(aTHX)
- if (a_initialized)
- return;
-
- {
- MY_CXT_INIT;
-# if A_THREADSAFE && A_WORKAROUND_REQUIRE_PROPAGATION
- MY_CXT.tbl = ptable_new();
- MY_CXT.owner = aTHX;
-# endif /* A_THREADSAFE && A_WORKAROUND_REQUIRE_PROPAGATION */
- MY_CXT.seen = ptable_new();
- }
-
- a_ck_replace(OP_PADANY, a_ck_padany, &a_old_ck_padany);
- a_ck_replace(OP_PADSV, a_ck_padsv, &a_old_ck_padsv);
+ MY_CXT_INIT; /* Takes/release PL_my_ctx_mutex */
- a_ck_replace(OP_AELEM, a_ck_deref, &a_old_ck_aelem);
- a_ck_replace(OP_HELEM, a_ck_deref, &a_old_ck_helem);
- a_ck_replace(OP_RV2SV, a_ck_deref, &a_old_ck_rv2sv);
+ A_LOADED_LOCK;
- a_ck_replace(OP_RV2AV, a_ck_rv2xv, &a_old_ck_rv2av);
- a_ck_replace(OP_RV2HV, a_ck_rv2xv, &a_old_ck_rv2hv);
-
- a_ck_replace(OP_ASLICE, a_ck_xslice, &a_old_ck_aslice);
- a_ck_replace(OP_HSLICE, a_ck_xslice, &a_old_ck_hslice);
-
- a_ck_replace(OP_EXISTS, a_ck_root, &a_old_ck_exists);
- a_ck_replace(OP_DELETE, a_ck_root, &a_old_ck_delete);
- a_ck_replace(OP_KEYS, a_ck_root, &a_old_ck_keys);
- a_ck_replace(OP_VALUES, a_ck_root, &a_old_ck_values);
+ if (a_set_loaded_locked(&MY_CXT)) {
+ PERL_HASH(a_hash, __PACKAGE__, __PACKAGE_LEN__);
-#if A_HAS_RPEEP
- a_old_peep = PL_rpeepp;
- PL_rpeepp = a_peep;
-#else
- a_old_peep = PL_peepp;
- PL_peepp = a_peep;
+ a_op_map = ptable_new();
+#ifdef USE_ITHREADS
+ MUTEX_INIT(&a_op_map_mutex);
#endif
-#if A_MULTIPLICITY
- call_atexit(a_teardown, aTHX);
-#else
- call_atexit(a_teardown, NULL);
-#endif
+ a_ck_replace(OP_PADANY, a_ck_padany, &a_old_ck_padany);
+ a_ck_replace(OP_PADSV, a_ck_padsv, &a_old_ck_padsv);
- a_initialized = 1;
-}
+ a_ck_replace(OP_AELEM, a_ck_deref, &a_old_ck_aelem);
+ a_ck_replace(OP_HELEM, a_ck_deref, &a_old_ck_helem);
+ a_ck_replace(OP_RV2SV, a_ck_deref, &a_old_ck_rv2sv);
-static U32 a_booted = 0;
+ a_ck_replace(OP_RV2AV, a_ck_rv2xv, &a_old_ck_rv2av);
+ a_ck_replace(OP_RV2HV, a_ck_rv2xv, &a_old_ck_rv2hv);
-/* --- XS ------------------------------------------------------------------ */
+ a_ck_replace(OP_ASLICE, a_ck_xslice, &a_old_ck_aslice);
+ a_ck_replace(OP_HSLICE, a_ck_xslice, &a_old_ck_hslice);
-MODULE = autovivification PACKAGE = autovivification
+ a_ck_replace(OP_EXISTS, a_ck_root, &a_old_ck_exists);
+ a_ck_replace(OP_DELETE, a_ck_root, &a_old_ck_delete);
+ a_ck_replace(OP_KEYS, a_ck_root, &a_old_ck_keys);
+ a_ck_replace(OP_VALUES, a_ck_root, &a_old_ck_values);
+ }
-PROTOTYPES: ENABLE
+ A_LOADED_UNLOCK;
-BOOT:
-{
- if (!a_booted++) {
+ {
HV *stash;
- a_op_map = ptable_new();
-#ifdef USE_ITHREADS
- MUTEX_INIT(&a_op_map_mutex);
-#endif
-
- PERL_HASH(a_hash, __PACKAGE__, __PACKAGE_LEN__);
-
stash = gv_stashpvn(__PACKAGE__, __PACKAGE_LEN__, 1);
newCONSTSUB(stash, "A_HINT_STRICT", newSVuv(A_HINT_STRICT));
newCONSTSUB(stash, "A_HINT_WARN", newSVuv(A_HINT_WARN));
newCONSTSUB(stash, "A_FORKSAFE", newSVuv(A_FORKSAFE));
}
+#if A_HAS_RPEEP
+ if (PL_rpeepp != a_peep) {
+ MY_CXT.old_peep = PL_rpeepp;
+ PL_rpeepp = a_peep;
+ }
+#else
+ if (PL_peepp != a_peep) {
+ MY_CXT.old_peep = PL_peepp;
+ PL_peepp = a_peep;
+ }
+#endif
+ else {
+ MY_CXT.old_peep = 0;
+ }
+
+ MY_CXT.seen = ptable_new();
+
+#if A_THREADSAFE && A_WORKAROUND_REQUIRE_PROPAGATION
+ MY_CXT.tbl = ptable_new();
+ MY_CXT.owner = aTHX;
+#endif /* A_THREADSAFE && A_WORKAROUND_REQUIRE_PROPAGATION */
+
+ call_atexit(a_teardown, NULL);
+
+ return;
+}
+
+/* --- XS ------------------------------------------------------------------ */
+
+MODULE = autovivification PACKAGE = autovivification
+
+PROTOTYPES: ENABLE
+
+BOOT:
+{
a_setup();
}
#if A_WORKAROUND_REQUIRE_PROPAGATION
ptable *t;
#endif
- ptable *s;
- GV *gv;
PPCODE:
- {
#if A_WORKAROUND_REQUIRE_PROPAGATION
+ {
+ a_ptable_clone_ud ud;
dMY_CXT;
- {
- a_ptable_clone_ud ud;
-
- t = ptable_new();
- a_ptable_clone_ud_init(ud, t, MY_CXT.owner);
- ptable_walk(MY_CXT.tbl, a_ptable_clone, &ud);
- a_ptable_clone_ud_deinit(ud);
- }
-#endif
- s = ptable_new();
+ t = ptable_new();
+ a_ptable_clone_ud_init(ud, t, MY_CXT.owner);
+ ptable_walk(MY_CXT.tbl, a_ptable_clone, &ud);
+ a_ptable_clone_ud_deinit(ud);
}
+#endif
{
MY_CXT_CLONE;
#if A_WORKAROUND_REQUIRE_PROPAGATION
MY_CXT.tbl = t;
MY_CXT.owner = aTHX;
#endif
- MY_CXT.seen = s;
- }
- gv = gv_fetchpv(__PACKAGE__ "::_THREAD_CLEANUP", 0, SVt_PVCV);
- if (gv) {
- CV *cv = GvCV(gv);
- if (!PL_endav)
- PL_endav = newAV();
- SvREFCNT_inc(cv);
- if (!av_store(PL_endav, av_len(PL_endav) + 1, (SV *) cv))
- SvREFCNT_dec(cv);
- sv_magicext((SV *) PL_endav, NULL, PERL_MAGIC_ext, &a_endav_vtbl, NULL, 0);
+ MY_CXT.seen = ptable_new();
+ {
+ int global_setup;
+ A_LOADED_LOCK;
+ global_setup = a_set_loaded_locked(&MY_CXT);
+ assert(!global_setup);
+ A_LOADED_UNLOCK;
+ }
}
XSRETURN(0);
-void
-_THREAD_CLEANUP(...)
-PROTOTYPE: DISABLE
-PPCODE:
- a_thread_cleanup(aTHX_ NULL);
- XSRETURN(0);
-
#endif /* A_THREADSAFE */
SV *
projects / perl / modules / autovivification.git / blobdiff