#define REPORT_BUG "please report occurrence circumstances to gtk-devel-list@gnome.org"
#ifdef G_ENABLE_DEBUG
-#define IF_DEBUG(debug_type, cond) if ((_g_type_debug_flags & G_TYPE_DEBUG_ ## debug_type) || cond)
+#define COND_DEBUG(debug_type, cond) ((_g_type_debug_flags & G_TYPE_DEBUG_ ## debug_type) || (cond))
+#define IF_DEBUG(debug_type, cond) if (COND_DEBUG(debug_type, cond))
+
static volatile gpointer g_trace_instance_signals = NULL;
static volatile gpointer g_trap_instance_signals = NULL;
#endif /* G_ENABLE_DEBUG */
const GValue *instance_and_params);
static const gchar * type_debug_name (GType type);
static void node_check_deprecated (const SignalNode *node);
+static void node_update_single_va_closure (SignalNode *node);
/* --- structures --- */
guint destroyed : 1;
/* reinitializable portion */
- guint test_class_offset : 12;
guint flags : 9;
guint n_params : 8;
+ guint single_va_closure_is_valid : 1;
+ guint single_va_closure_is_after : 1;
GType *param_types; /* mangled with G_SIGNAL_TYPE_STATIC_SCOPE flag */
GType return_type; /* mangled with G_SIGNAL_TYPE_STATIC_SCOPE flag */
GBSearchArray *class_closure_bsa;
GSignalCMarshaller c_marshaller;
GSignalCVaMarshaller va_marshaller;
GHookList *emission_hooks;
+
+ GClosure *single_va_closure;
};
-#define MAX_TEST_CLASS_OFFSET (4096) /* 2^12, 12 bits for test_class_offset */
-#define TEST_CLASS_MAGIC (1) /* indicates NULL class closure, candidate for NOP optimization */
+
+#define SINGLE_VA_CLOSURE_EMPTY_MAGIC GINT_TO_POINTER(1) /* indicates single_va_closure is valid but empty */
struct _SignalKey
{
hlist->tail_after = handler;
}
+static void
+node_update_single_va_closure (SignalNode *node)
+{
+ GClosure *closure = NULL;
+ gboolean is_after = FALSE;
+
+ /* Fast path single-handler without boxing the arguments in GValues */
+ if (G_TYPE_IS_OBJECT (node->itype) &&
+ (node->flags & (G_SIGNAL_NO_RECURSE|G_SIGNAL_MUST_COLLECT)) == 0 &&
+ (node->emission_hooks == NULL || node->emission_hooks->hooks == NULL))
+ {
+ GSignalFlags run_type;
+ ClassClosure * cc;
+ GBSearchArray *bsa = node->class_closure_bsa;
+
+ if (bsa == NULL || bsa->n_nodes == 0)
+ closure = SINGLE_VA_CLOSURE_EMPTY_MAGIC;
+ else if (bsa->n_nodes == 1)
+ {
+ /* Look for default class closure (can't support non-default as it
+ chains up using GValues */
+ cc = g_bsearch_array_get_nth (bsa, &g_class_closure_bconfig, 0);
+ if (cc->instance_type == 0)
+ {
+ run_type = node->flags & (G_SIGNAL_RUN_FIRST|G_SIGNAL_RUN_LAST|G_SIGNAL_RUN_CLEANUP);
+ /* Only support *one* of run-first or run-last, not multiple or cleanup */
+ if (run_type == G_SIGNAL_RUN_FIRST ||
+ run_type == G_SIGNAL_RUN_LAST)
+ {
+ closure = cc->closure;
+ is_after = (run_type == G_SIGNAL_RUN_LAST);
+ }
+ }
+ }
+ }
+
+ node->single_va_closure_is_valid = TRUE;
+ node->single_va_closure = closure;
+ node->single_va_closure_is_after = is_after;
+}
+
static inline void
emission_push (Emission **emission_list_p,
Emission *emission)
node->emission_hooks->seq_id = seq_hook_id;
g_hook_append (node->emission_hooks, hook);
seq_hook_id = node->emission_hooks->seq_id;
+
SIGNAL_UNLOCK ();
return hook->hook_id;
g_warning ("%s: invalid signal id `%u'", G_STRLOC, signal_id);
else if (!node->emission_hooks || !g_hook_destroy (node->emission_hooks, hook_id))
g_warning ("%s: signal \"%s\" had no hook (%lu) to remove", G_STRLOC, node->name, hook_id);
+
+ node->single_va_closure_is_valid = FALSE;
+
SIGNAL_UNLOCK ();
}
va_end (args);
- /* optimize NOP emissions with NULL class handlers */
- if (signal_id && G_TYPE_IS_INSTANTIATABLE (itype) && return_type == G_TYPE_NONE &&
- class_offset && class_offset < MAX_TEST_CLASS_OFFSET &&
- ~signal_flags & G_SIGNAL_MUST_COLLECT)
- {
- SignalNode *node;
-
- SIGNAL_LOCK ();
- node = LOOKUP_SIGNAL_NODE (signal_id);
- node->test_class_offset = class_offset;
- SIGNAL_UNLOCK ();
- }
-
return signal_id;
}
{
ClassClosure key;
- /* can't optimize NOP emissions with overridden class closures */
- node->test_class_offset = 0;
+ node->single_va_closure_is_valid = FALSE;
if (!node->class_closure_bsa)
node->class_closure_bsa = g_bsearch_array_create (&g_class_closure_bconfig);
TRACE(GOBJECT_SIGNAL_NEW(signal_id, name, itype));
}
node->destroyed = FALSE;
- node->test_class_offset = 0;
/* setup reinitializable portion */
+ node->single_va_closure_is_valid = FALSE;
node->flags = signal_flags & G_SIGNAL_FLAGS_MASK;
node->n_params = n_params;
node->param_types = g_memdup (param_types, sizeof (GType) * n_params);
node->emission_hooks = NULL;
if (class_closure)
signal_add_class_closure (node, 0, class_closure);
- else if (G_TYPE_IS_INSTANTIATABLE (itype) &&
- return_type == G_TYPE_NONE &&
- ~signal_flags & G_SIGNAL_MUST_COLLECT)
- {
- /* optimize NOP emissions */
- node->test_class_offset = TEST_CLASS_MAGIC;
- }
+
SIGNAL_UNLOCK ();
g_free (name);
_g_closure_set_va_marshal (cc->closure, va_marshaller);
}
}
+
+ node->single_va_closure_is_valid = FALSE;
+
SIGNAL_UNLOCK ();
}
signal_node->destroyed = TRUE;
/* reentrancy caution, zero out real contents first */
- signal_node->test_class_offset = 0;
+ signal_node->single_va_closure_is_valid = FALSE;
signal_node->n_params = 0;
signal_node->param_types = NULL;
signal_node->return_type = 0;
return has_pending;
}
-static inline gboolean
-signal_check_skip_emission (SignalNode *node,
- gpointer instance,
- GQuark detail)
-{
- HandlerList *hlist;
-
- /* are we able to check for NULL class handlers? */
- if (!node->test_class_offset)
- return FALSE;
-
- /* are there emission hooks pending? */
- if (node->emission_hooks && node->emission_hooks->hooks)
- return FALSE;
-
- /* is there a non-NULL class handler? */
- if (node->test_class_offset != TEST_CLASS_MAGIC)
- {
- GTypeClass *class = G_TYPE_INSTANCE_GET_CLASS (instance, G_TYPE_FROM_INSTANCE (instance), GTypeClass);
-
- if (G_STRUCT_MEMBER (gpointer, class, node->test_class_offset))
- return FALSE;
- }
-
- /* are signals being debugged? */
-#ifdef G_ENABLE_DEBUG
- IF_DEBUG (SIGNALS, g_trace_instance_signals || g_trap_instance_signals)
- return FALSE;
-#endif /* G_ENABLE_DEBUG */
-
- /* is this a no-recurse signal already in emission? */
- if (node->flags & G_SIGNAL_NO_RECURSE &&
- emission_find (g_restart_emissions, node->signal_id, detail, instance))
- return FALSE;
-
- /* do we have pending handlers? */
- hlist = handler_list_lookup (node->signal_id, instance);
- if (hlist && hlist->handlers)
- return FALSE;
-
- /* none of the above, no emission required */
- return TRUE;
-}
-
/**
* g_signal_emitv:
* @instance_and_params: (array): argument list for the signal emission.
#endif /* G_ENABLE_DEBUG */
/* optimize NOP emissions */
- if (signal_check_skip_emission (node, instance, detail))
+ if (!node->single_va_closure_is_valid)
+ node_update_single_va_closure (node);
+
+ if (node->single_va_closure != NULL &&
+ (node->single_va_closure == SINGLE_VA_CLOSURE_EMPTY_MAGIC ||
+ _g_closure_is_void (node->single_va_closure, instance))
+#ifdef G_ENABLE_DEBUG
+ && !COND_DEBUG (SIGNALS, g_trace_instance_signals != instance &&
+ g_trap_instance_signals == instance)
+#endif /* G_ENABLE_DEBUG */
+ )
{
- /* nothing to do to emit this signal */
- SIGNAL_UNLOCK ();
- /* g_printerr ("omitting emission of \"%s\"\n", node->name); */
- return;
+ HandlerList* hlist = handler_list_lookup (node->signal_id, instance);
+ if (hlist == NULL || hlist->handlers == NULL)
+ {
+ /* nothing to do to emit this signal */
+ SIGNAL_UNLOCK ();
+ /* g_printerr ("omitting emission of \"%s\"\n", node->name); */
+ return;
+ }
}
SIGNAL_UNLOCK ();
signal_emit_unlocked_R (node, detail, instance, return_value, instance_and_params);
}
+static inline gboolean
+accumulate (GSignalInvocationHint *ihint,
+ GValue *return_accu,
+ GValue *handler_return,
+ SignalAccumulator *accumulator)
+{
+ gboolean continue_emission;
+
+ if (!accumulator)
+ return TRUE;
+
+ continue_emission = accumulator->func (ihint, return_accu, handler_return, accumulator->data);
+ g_value_reset (handler_return);
+
+ return continue_emission;
+}
+
/**
* g_signal_emit_valist:
* @instance: the instance the signal is being emitted on.
}
#endif /* !G_DISABLE_CHECKS */
- /* optimize NOP emissions */
- if (signal_check_skip_emission (node, instance, detail))
+ if (!node->single_va_closure_is_valid)
+ node_update_single_va_closure (node);
+
+ if (node->single_va_closure != NULL
+#ifdef G_ENABLE_DEBUG
+ && !COND_DEBUG (SIGNALS, g_trace_instance_signals != instance &&
+ g_trap_instance_signals == instance)
+#endif /* G_ENABLE_DEBUG */
+ )
{
- /* nothing to do to emit this signal */
- SIGNAL_UNLOCK ();
- /* g_printerr ("omitting emission of \"%s\"\n", node->name); */
- return;
+ HandlerList* hlist = handler_list_lookup (node->signal_id, instance);
+ Handler *l;
+ GClosure *closure = NULL;
+ gboolean fastpath = TRUE;
+ GSignalFlags run_type = G_SIGNAL_RUN_FIRST;
+
+ if (node->single_va_closure != SINGLE_VA_CLOSURE_EMPTY_MAGIC &&
+ !_g_closure_is_void (node->single_va_closure, instance))
+ {
+ if (_g_closure_supports_invoke_va (node->single_va_closure))
+ {
+ closure = node->single_va_closure;
+ if (node->single_va_closure_is_after)
+ run_type = G_SIGNAL_RUN_LAST;
+ else
+ run_type = G_SIGNAL_RUN_FIRST;
+ }
+ else
+ fastpath = FALSE;
+ }
+
+ for (l = hlist ? hlist->handlers : NULL; fastpath && l != NULL; l = l->next)
+ {
+ if (!l->block_count &&
+ (!l->detail || l->detail == detail))
+ {
+ if (closure != NULL || !_g_closure_supports_invoke_va (l->closure))
+ {
+ fastpath = FALSE;
+ break;
+ }
+ else
+ {
+ closure = l->closure;
+ if (l->after)
+ run_type = G_SIGNAL_RUN_LAST;
+ else
+ run_type = G_SIGNAL_RUN_FIRST;
+ }
+ }
+ }
+
+ if (fastpath && closure == NULL && node->return_type == G_TYPE_NONE)
+ {
+ SIGNAL_UNLOCK ();
+ return;
+ }
+
+ if (fastpath)
+ {
+ SignalAccumulator *accumulator;
+ Emission emission;
+ GValue *return_accu, accu = G_VALUE_INIT;
+ guint signal_id;
+ GValue emission_return = G_VALUE_INIT;
+ GType rtype = node->return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE;
+ gboolean static_scope = node->return_type & G_SIGNAL_TYPE_STATIC_SCOPE;
+
+ signal_id = node->signal_id;
+ accumulator = node->accumulator;
+ if (rtype == G_TYPE_NONE)
+ return_accu = NULL;
+ else if (accumulator)
+ return_accu = &accu;
+ else
+ return_accu = &emission_return;
+
+ emission.instance = instance;
+ emission.ihint.signal_id = node->signal_id;
+ emission.ihint.detail = detail;
+ emission.ihint.run_type = run_type;
+ emission.state = EMISSION_RUN;
+ emission.chain_type = G_TYPE_FROM_INSTANCE (instance);
+ emission_push (&g_recursive_emissions, &emission);
+
+ SIGNAL_UNLOCK ();
+
+ TRACE(GOBJECT_SIGNAL_EMIT(signal_id, detail, instance, G_TYPE_FROM_INSTANCE (instance)));
+
+ if (rtype != G_TYPE_NONE)
+ g_value_init (&emission_return, rtype);
+
+ if (accumulator)
+ g_value_init (&accu, rtype);
+
+ if (closure != NULL)
+ {
+ g_object_ref (instance);
+ _g_closure_invoke_va (closure,
+ return_accu,
+ instance,
+ var_args,
+ node->n_params,
+ node->param_types);
+ accumulate (&emission.ihint, &emission_return, &accu, accumulator);
+ g_object_unref (instance);
+ }
+
+ SIGNAL_LOCK ();
+
+ emission.chain_type = G_TYPE_NONE;
+ emission_pop (&g_recursive_emissions, &emission);
+
+ SIGNAL_UNLOCK ();
+
+ if (accumulator)
+ g_value_unset (&accu);
+
+ if (rtype != G_TYPE_NONE)
+ {
+ gchar *error = NULL;
+ for (i = 0; i < node->n_params; i++)
+ {
+ GType ptype = node->param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE;
+ G_VALUE_COLLECT_SKIP (ptype, var_args);
+ }
+
+ G_VALUE_LCOPY (&emission_return,
+ var_args,
+ static_scope ? G_VALUE_NOCOPY_CONTENTS : 0,
+ &error);
+ if (!error)
+ g_value_unset (&emission_return);
+ else
+ {
+ g_warning ("%s: %s", G_STRLOC, error);
+ g_free (error);
+ /* we purposely leak the value here, it might not be
+ * in a sane state if an error condition occurred
+ */
+ }
+ }
+
+ TRACE(GOBJECT_SIGNAL_EMIT_END(signal_id, detail, instance, G_TYPE_FROM_INSTANCE (instance)));
+
+ return;
+ }
}
n_params = node->n_params;
g_warning ("%s: signal name `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
}
-static inline gboolean
-accumulate (GSignalInvocationHint *ihint,
- GValue *return_accu,
- GValue *handler_return,
- SignalAccumulator *accumulator)
-{
- gboolean continue_emission;
-
- if (!accumulator)
- return TRUE;
-
- continue_emission = accumulator->func (ihint, return_accu, handler_return, accumulator->data);
- g_value_reset (handler_return);
-
- return continue_emission;
-}
-
static gboolean
signal_emit_unlocked_R (SignalNode *node,
GQuark detail,
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