* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
- * Public License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* this code is based on the original GtkSignal implementation
* for the Gtk+ library by Peter Mattis <petm@xcf.berkeley.edu>
* and a general purpose notification mechanism
* @title: Signals
*
- * The basic concept of the signal system is that of the
- * <emphasis>emission</emphasis> of a signal. Signals are introduced
- * per-type and are identified through strings. Signals introduced
- * for a parent type are available in derived types as well, so
- * basically they are a per-type facility that is inherited. A signal
- * emission mainly involves invocation of a certain set of callbacks
- * in precisely defined manner. There are two main categories of such
- * callbacks, per-object
- * <footnote><para>Although signals can deal with any kind of instantiatable
- * type, i'm referring to those types as "object types" in the following,
- * simply because that is the context most users will encounter signals in.
- * </para></footnote>
- * ones and user provided ones.
+ * The basic concept of the signal system is that of the emission
+ * of a signal. Signals are introduced per-type and are identified
+ * through strings. Signals introduced for a parent type are available
+ * in derived types as well, so basically they are a per-type facility
+ * that is inherited.
+ *
+ * A signal emission mainly involves invocation of a certain set of
+ * callbacks in precisely defined manner. There are two main categories
+ * of such callbacks, per-object ones and user provided ones.
+ * (Although signals can deal with any kind of instantiatable type, I'm
+ * referring to those types as "object types" in the following, simply
+ * because that is the context most users will encounter signals in.)
* The per-object callbacks are most often referred to as "object method
* handler" or "default (signal) handler", while user provided callbacks are
* usually just called "signal handler".
+ *
* The object method handler is provided at signal creation time (this most
* frequently happens at the end of an object class' creation), while user
- * provided handlers are frequently connected and disconnected to/from a certain
- * signal on certain object instances.
+ * provided handlers are frequently connected and disconnected to/from a
+ * certain signal on certain object instances.
*
* A signal emission consists of five stages, unless prematurely stopped:
- * <variablelist>
- * <varlistentry><term></term><listitem><para>
- * 1 - Invocation of the object method handler for %G_SIGNAL_RUN_FIRST signals
- * </para></listitem></varlistentry>
- * <varlistentry><term></term><listitem><para>
- * 2 - Invocation of normal user-provided signal handlers (<emphasis>after</emphasis> flag %FALSE)
- * </para></listitem></varlistentry>
- * <varlistentry><term></term><listitem><para>
- * 3 - Invocation of the object method handler for %G_SIGNAL_RUN_LAST signals
- * </para></listitem></varlistentry>
- * <varlistentry><term></term><listitem><para>
- * 4 - Invocation of user provided signal handlers, connected with an <emphasis>after</emphasis> flag of %TRUE
- * </para></listitem></varlistentry>
- * <varlistentry><term></term><listitem><para>
- * 5 - Invocation of the object method handler for %G_SIGNAL_RUN_CLEANUP signals
- * </para></listitem></varlistentry>
- * </variablelist>
+ *
+ * 1. Invocation of the object method handler for %G_SIGNAL_RUN_FIRST signals
+ *
+ * 2. Invocation of normal user-provided signal handlers (where the @after
+ * flag is not set)
+ *
+ * 3. Invocation of the object method handler for %G_SIGNAL_RUN_LAST signals
+ *
+ * 4. Invocation of user provided signal handlers (where the @after flag is set)
+ *
+ * 5. Invocation of the object method handler for %G_SIGNAL_RUN_CLEANUP signals
+
* The user-provided signal handlers are called in the order they were
* connected in.
+ *
* All handlers may prematurely stop a signal emission, and any number of
* handlers may be connected, disconnected, blocked or unblocked during
* a signal emission.
+ *
* There are certain criteria for skipping user handlers in stages 2 and 4
* of a signal emission.
- * First, user handlers may be <emphasis>blocked</emphasis>, blocked handlers are omitted
- * during callback invocation, to return from the "blocked" state, a
- * handler has to get unblocked exactly the same amount of times
- * it has been blocked before.
+ *
+ * First, user handlers may be blocked. Blocked handlers are omitted during
+ * callback invocation, to return from the blocked state, a handler has to
+ * get unblocked exactly the same amount of times it has been blocked before.
+ *
* Second, upon emission of a %G_SIGNAL_DETAILED signal, an additional
- * "detail" argument passed in to g_signal_emit() has to match the detail
+ * @detail argument passed in to g_signal_emit() has to match the detail
* argument of the signal handler currently subject to invocation.
* Specification of no detail argument for signal handlers (omission of the
* detail part of the signal specification upon connection) serves as a
#define REPORT_BUG "please report occurrence circumstances to gtk-devel-list@gnome.org"
-#ifdef G_ENABLE_DEBUG
-#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 */
-
/* --- typedefs --- */
typedef struct _SignalNode SignalNode;
Handler *handler);
static gint handler_lists_cmp (gconstpointer node1,
gconstpointer node2);
-static inline void emission_push (Emission **emission_list_p,
- Emission *emission);
-static inline void emission_pop (Emission **emission_list_p,
- Emission *emission);
-static inline Emission* emission_find (Emission *emission_list,
- guint signal_id,
+static inline void emission_push (Emission *emission);
+static inline void emission_pop (Emission *emission);
+static inline Emission* emission_find (guint signal_id,
GQuark detail,
gpointer instance);
static gint class_closures_cmp (gconstpointer node1,
0,
};
static GHashTable *g_handler_list_bsa_ht = NULL;
-static Emission *g_recursive_emissions = NULL;
-static Emission *g_restart_emissions = NULL;
+static Emission *g_emissions = NULL;
static gulong g_handler_sequential_number = 1;
G_LOCK_DEFINE_STATIC (g_signal_mutex);
#define SIGNAL_LOCK() G_LOCK (g_signal_mutex)
static SignalNode **g_signal_nodes = NULL;
static inline SignalNode*
-LOOKUP_SIGNAL_NODE (register guint signal_id)
+LOOKUP_SIGNAL_NODE (guint signal_id)
{
if (signal_id < g_n_signal_nodes)
return g_signal_nodes[signal_id];
}
static inline void
-emission_push (Emission **emission_list_p,
- Emission *emission)
+emission_push (Emission *emission)
{
- emission->next = *emission_list_p;
- *emission_list_p = emission;
+ emission->next = g_emissions;
+ g_emissions = emission;
}
static inline void
-emission_pop (Emission **emission_list_p,
- Emission *emission)
+emission_pop (Emission *emission)
{
Emission *node, *last = NULL;
- for (node = *emission_list_p; node; last = node, node = last->next)
+ for (node = g_emissions; node; last = node, node = last->next)
if (node == emission)
{
if (last)
last->next = node->next;
else
- *emission_list_p = node->next;
+ g_emissions = node->next;
return;
}
g_assert_not_reached ();
}
static inline Emission*
-emission_find (Emission *emission_list,
- guint signal_id,
+emission_find (guint signal_id,
GQuark detail,
gpointer instance)
{
Emission *emission;
- for (emission = emission_list; emission; emission = emission->next)
+ for (emission = g_emissions; emission; emission = emission->next)
if (emission->instance == instance &&
emission->ihint.signal_id == signal_id &&
emission->ihint.detail == detail)
static inline Emission*
emission_find_innermost (gpointer instance)
{
- Emission *emission, *s = NULL, *c = NULL;
+ Emission *emission;
- for (emission = g_restart_emissions; emission; emission = emission->next)
+ for (emission = g_emissions; emission; emission = emission->next)
if (emission->instance == instance)
- {
- s = emission;
- break;
- }
- for (emission = g_recursive_emissions; emission; emission = emission->next)
- if (emission->instance == instance)
- {
- c = emission;
- break;
- }
- if (!s)
- return c;
- else if (!c)
- return s;
- else
- return G_HAVE_GROWING_STACK ? MAX (c, s) : MIN (c, s);
+ return emission;
+
+ return NULL;
}
static gint
if (node->itype == itype)
{
if (node->destroyed)
- g_warning (G_STRLOC ": signal \"%s\" of type `%s' already destroyed",
+ g_warning (G_STRLOC ": signal \"%s\" of type '%s' already destroyed",
node->name,
type_debug_name (node->itype));
else
/**
* g_signal_stop_emission:
- * @instance: the object whose signal handlers you wish to stop.
+ * @instance: (type GObject.Object): the object whose signal handlers you wish to stop.
* @signal_id: the signal identifier, as returned by g_signal_lookup().
* @detail: the detail which the signal was emitted with.
*
node = LOOKUP_SIGNAL_NODE (signal_id);
if (node && detail && !(node->flags & G_SIGNAL_DETAILED))
{
- g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
+ g_warning ("%s: signal id '%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
SIGNAL_UNLOCK ();
return;
}
if (node && g_type_is_a (G_TYPE_FROM_INSTANCE (instance), node->itype))
{
- Emission *emission_list = node->flags & G_SIGNAL_NO_RECURSE ? g_restart_emissions : g_recursive_emissions;
- Emission *emission = emission_find (emission_list, signal_id, detail, instance);
+ Emission *emission = emission_find (signal_id, detail, instance);
if (emission)
{
if (emission->state == EMISSION_HOOK)
- g_warning (G_STRLOC ": emission of signal \"%s\" for instance `%p' cannot be stopped from emission hook",
+ g_warning (G_STRLOC ": emission of signal \"%s\" for instance '%p' cannot be stopped from emission hook",
node->name, instance);
else if (emission->state == EMISSION_RUN)
emission->state = EMISSION_STOP;
}
else
- g_warning (G_STRLOC ": no emission of signal \"%s\" to stop for instance `%p'",
+ g_warning (G_STRLOC ": no emission of signal \"%s\" to stop for instance '%p'",
node->name, instance);
}
else
- g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
+ g_warning ("%s: signal id '%u' is invalid for instance '%p'", G_STRLOC, signal_id, instance);
SIGNAL_UNLOCK ();
}
node = LOOKUP_SIGNAL_NODE (signal_id);
if (!node || node->destroyed)
{
- g_warning ("%s: invalid signal id `%u'", G_STRLOC, signal_id);
+ g_warning ("%s: invalid signal id '%u'", G_STRLOC, signal_id);
SIGNAL_UNLOCK ();
return 0;
}
if (node->flags & G_SIGNAL_NO_HOOKS)
{
- g_warning ("%s: signal id `%u' does not support emission hooks (G_SIGNAL_NO_HOOKS flag set)", G_STRLOC, signal_id);
+ g_warning ("%s: signal id '%u' does not support emission hooks (G_SIGNAL_NO_HOOKS flag set)", G_STRLOC, signal_id);
SIGNAL_UNLOCK ();
return 0;
}
if (detail && !(node->flags & G_SIGNAL_DETAILED))
{
- g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
+ g_warning ("%s: signal id '%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
SIGNAL_UNLOCK ();
return 0;
}
node = LOOKUP_SIGNAL_NODE (signal_id);
if (!node || node->destroyed)
{
- g_warning ("%s: invalid signal id `%u'", G_STRLOC, signal_id);
+ g_warning ("%s: invalid signal id '%u'", G_STRLOC, signal_id);
goto out;
}
else if (!node->emission_hooks || !g_hook_destroy (node->emission_hooks, hook_id))
/**
* g_signal_stop_emission_by_name:
- * @instance: the object whose signal handlers you wish to stop.
+ * @instance: (type GObject.Object): the object whose signal handlers you wish to stop.
* @detailed_signal: a string of the form "signal-name::detail".
*
* Stops a signal's current emission.
SignalNode *node = LOOKUP_SIGNAL_NODE (signal_id);
if (detail && !(node->flags & G_SIGNAL_DETAILED))
- g_warning ("%s: signal `%s' does not support details", G_STRLOC, detailed_signal);
+ g_warning ("%s: signal '%s' does not support details", G_STRLOC, detailed_signal);
else if (!g_type_is_a (itype, node->itype))
- g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
+ g_warning ("%s: signal '%s' is invalid for instance '%p' of type '%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
else
{
- Emission *emission_list = node->flags & G_SIGNAL_NO_RECURSE ? g_restart_emissions : g_recursive_emissions;
- Emission *emission = emission_find (emission_list, signal_id, detail, instance);
+ Emission *emission = emission_find (signal_id, detail, instance);
if (emission)
{
if (emission->state == EMISSION_HOOK)
- g_warning (G_STRLOC ": emission of signal \"%s\" for instance `%p' cannot be stopped from emission hook",
+ g_warning (G_STRLOC ": emission of signal \"%s\" for instance '%p' cannot be stopped from emission hook",
node->name, instance);
else if (emission->state == EMISSION_RUN)
emission->state = EMISSION_STOP;
}
else
- g_warning (G_STRLOC ": no emission of signal \"%s\" to stop for instance `%p'",
+ g_warning (G_STRLOC ": no emission of signal \"%s\" to stop for instance '%p'",
node->name, instance);
}
}
else
- g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
+ g_warning ("%s: signal '%s' is invalid for instance '%p' of type '%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
SIGNAL_UNLOCK ();
}
{
/* give elaborate warnings */
if (!g_type_name (itype))
- g_warning (G_STRLOC ": unable to lookup signal \"%s\" for invalid type id `%"G_GSIZE_FORMAT"'",
+ g_warning (G_STRLOC ": unable to lookup signal \"%s\" for invalid type id '%"G_GSIZE_FORMAT"'",
name, itype);
else if (!G_TYPE_IS_INSTANTIATABLE (itype))
- g_warning (G_STRLOC ": unable to lookup signal \"%s\" for non instantiatable type `%s'",
+ g_warning (G_STRLOC ": unable to lookup signal \"%s\" for non instantiatable type '%s'",
name, g_type_name (itype));
else if (!g_type_class_peek (itype))
- g_warning (G_STRLOC ": unable to lookup signal \"%s\" of unloaded type `%s'",
+ g_warning (G_STRLOC ": unable to lookup signal \"%s\" of unloaded type '%s'",
name, g_type_name (itype));
}
{
/* give elaborate warnings */
if (!g_type_name (itype))
- g_warning (G_STRLOC ": unable to list signals for invalid type id `%"G_GSIZE_FORMAT"'",
+ g_warning (G_STRLOC ": unable to list signals for invalid type id '%"G_GSIZE_FORMAT"'",
itype);
else if (!G_TYPE_IS_INSTANTIATABLE (itype) && !G_TYPE_IS_INTERFACE (itype))
- g_warning (G_STRLOC ": unable to list signals of non instantiatable type `%s'",
+ g_warning (G_STRLOC ": unable to list signals of non instantiatable type '%s'",
g_type_name (itype));
else if (!g_type_class_peek (itype) && !G_TYPE_IS_INTERFACE (itype))
- g_warning (G_STRLOC ": unable to list signals of unloaded type `%s'",
+ g_warning (G_STRLOC ": unable to list signals of unloaded type '%s'",
g_type_name (itype));
}
* be used, but they cannot be mixed.
*
* If 0 is used for @class_offset subclasses cannot override the class handler
- * in their <code>class_init</code> method by doing
- * <code>super_class->signal_handler = my_signal_handler</code>. Instead they
- * will have to use g_signal_override_class_handler().
+ * in their class_init method by doing super_class->signal_handler = my_signal_handler.
+ * Instead they will have to use g_signal_override_class_handler().
*
* If c_marshaller is %NULL, g_cclosure_marshal_generic() will be used as
* the marshaller for this signal.
*
* See g_signal_new() for information about signal names.
*
- * If c_marshaller is %NULL @g_cclosure_marshal_generic will be used as
+ * If c_marshaller is %NULL, g_cclosure_marshal_generic() will be used as
* the marshaller for this signal.
*
* Returns: the signal id
*
* See g_signal_new() for details on allowed signal names.
*
- * If c_marshaller is %NULL @g_cclosure_marshal_generic will be used as
+ * If c_marshaller is %NULL, g_cclosure_marshal_generic() will be used as
* the marshaller for this signal.
*
* Returns: the signal id
node = LOOKUP_SIGNAL_NODE (signal_id);
if (node && !node->destroyed)
{
- g_warning (G_STRLOC ": signal \"%s\" already exists in the `%s' %s",
+ g_warning (G_STRLOC ": signal \"%s\" already exists in the '%s' %s",
name,
type_debug_name (node->itype),
G_TYPE_IS_INTERFACE (node->itype) ? "interface" : "class ancestry");
}
if (node && node->itype != itype)
{
- g_warning (G_STRLOC ": signal \"%s\" for type `%s' was previously created for type `%s'",
+ g_warning (G_STRLOC ": signal \"%s\" for type '%s' was previously created for type '%s'",
name,
type_debug_name (itype),
type_debug_name (node->itype));
for (i = 0; i < n_params; i++)
if (!G_TYPE_IS_VALUE (param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE))
{
- g_warning (G_STRLOC ": parameter %d of type `%s' for signal \"%s::%s\" is not a value type",
+ g_warning (G_STRLOC ": parameter %d of type '%s' for signal \"%s::%s\" is not a value type",
i + 1, type_debug_name (param_types[i]), type_debug_name (itype), name);
g_free (name);
SIGNAL_UNLOCK ();
}
if (return_type != G_TYPE_NONE && !G_TYPE_IS_VALUE (return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE))
{
- g_warning (G_STRLOC ": return value of type `%s' for signal \"%s::%s\" is not a value type",
+ g_warning (G_STRLOC ": return value of type '%s' for signal \"%s::%s\" is not a value type",
type_debug_name (return_type), type_debug_name (itype), name);
g_free (name);
SIGNAL_UNLOCK ();
if (return_type != G_TYPE_NONE &&
(signal_flags & (G_SIGNAL_RUN_FIRST | G_SIGNAL_RUN_LAST | G_SIGNAL_RUN_CLEANUP)) == G_SIGNAL_RUN_FIRST)
{
- g_warning (G_STRLOC ": signal \"%s::%s\" has return type `%s' and is only G_SIGNAL_RUN_FIRST",
+ g_warning (G_STRLOC ": signal \"%s::%s\" has return type '%s' and is only G_SIGNAL_RUN_FIRST",
type_debug_name (itype), name, type_debug_name (return_type));
g_free (name);
SIGNAL_UNLOCK ();
{
Emission *emission;
- for (emission = (node.flags & G_SIGNAL_NO_RECURSE) ? g_restart_emissions : g_recursive_emissions;
- emission; emission = emission->next)
+ for (emission = g_emissions; emission; emission = emission->next)
if (emission->ihint.signal_id == node.signal_id)
- g_critical (G_STRLOC ": signal \"%s\" being destroyed is currently in emission (instance `%p')",
+ g_critical (G_STRLOC ": signal \"%s\" being destroyed is currently in emission (instance '%p')",
node.name, emission->instance);
}
#endif
node = LOOKUP_SIGNAL_NODE (signal_id);
node_check_deprecated (node);
if (!g_type_is_a (instance_type, node->itype))
- g_warning ("%s: type `%s' cannot be overridden for signal id `%u'", G_STRLOC, type_debug_name (instance_type), signal_id);
+ g_warning ("%s: type '%s' cannot be overridden for signal id '%u'", G_STRLOC, type_debug_name (instance_type), signal_id);
else
{
ClassClosure *cc = signal_find_class_closure (node, instance_type);
if (cc && cc->instance_type == instance_type)
- g_warning ("%s: type `%s' is already overridden for signal id `%u'", G_STRLOC, type_debug_name (instance_type), signal_id);
+ g_warning ("%s: type '%s' is already overridden for signal id '%u'", G_STRLOC, type_debug_name (instance_type), signal_id);
else
signal_add_class_closure (node, instance_type, class_closure);
}
*
* Overrides the class closure (i.e. the default handler) for the
* given signal for emissions on instances of @instance_type with
- * callabck @class_handler. @instance_type must be derived from the
+ * callback @class_handler. @instance_type must be derived from the
* type to which the signal belongs.
*
* See g_signal_chain_from_overridden() and
}
}
else
- g_warning ("%s: signal id `%u' cannot be chained from current emission stage for instance `%p'", G_STRLOC, node->signal_id, instance);
+ g_warning ("%s: signal id '%u' cannot be chained from current emission stage for instance '%p'", G_STRLOC, node->signal_id, instance);
}
else
- g_warning ("%s: no signal is currently being emitted for instance `%p'", G_STRLOC, instance);
+ g_warning ("%s: no signal is currently being emitted for instance '%p'", G_STRLOC, instance);
if (closure)
{
}
/**
- * g_signal_chain_from_overridden_handler:
+ * g_signal_chain_from_overridden_handler: (skip)
* @instance: the instance the signal is being emitted on.
* @...: parameters to be passed to the parent class closure, followed by a
* location for the return value. If the return type of the signal
}
}
else
- g_warning ("%s: signal id `%u' cannot be chained from current emission stage for instance `%p'", G_STRLOC, node->signal_id, instance);
+ g_warning ("%s: signal id '%u' cannot be chained from current emission stage for instance '%p'", G_STRLOC, node->signal_id, instance);
}
else
- g_warning ("%s: no signal is currently being emitted for instance `%p'", G_STRLOC, instance);
+ g_warning ("%s: no signal is currently being emitted for instance '%p'", G_STRLOC, instance);
if (closure)
{
SIGNAL_UNLOCK ();
instance_and_params->g_type = 0;
- g_value_init (instance_and_params, G_TYPE_FROM_INSTANCE (instance));
- g_value_set_instance (instance_and_params, instance);
+ g_value_init_from_instance (instance_and_params, instance);
SIGNAL_LOCK ();
emission->chain_type = chain_type;
/**
* g_signal_get_invocation_hint:
- * @instance: the instance to query
+ * @instance: (type GObject.Object): the instance to query
*
* Returns the invocation hint of the innermost signal emission of instance.
*
/**
* g_signal_connect_closure_by_id:
- * @instance: the instance to connect to.
+ * @instance: (type GObject.Object): the instance to connect to.
* @signal_id: the id of the signal.
* @detail: the detail.
* @closure: the closure to connect.
*
* Connects a closure to a signal for a particular object.
*
- * Returns: the handler id
+ * Returns: the handler id (always greater than 0 for successful connections)
*/
gulong
g_signal_connect_closure_by_id (gpointer instance,
if (node)
{
if (detail && !(node->flags & G_SIGNAL_DETAILED))
- g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
+ g_warning ("%s: signal id '%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
else if (!g_type_is_a (G_TYPE_FROM_INSTANCE (instance), node->itype))
- g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
+ g_warning ("%s: signal id '%u' is invalid for instance '%p'", G_STRLOC, signal_id, instance);
else
{
Handler *handler = handler_new (after);
}
}
else
- g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
+ g_warning ("%s: signal id '%u' is invalid for instance '%p'", G_STRLOC, signal_id, instance);
SIGNAL_UNLOCK ();
return handler_seq_no;
/**
* g_signal_connect_closure:
- * @instance: the instance to connect to.
+ * @instance: (type GObject.Object): the instance to connect to.
* @detailed_signal: a string of the form "signal-name::detail".
* @closure: the closure to connect.
* @after: whether the handler should be called before or after the
*
* Connects a closure to a signal for a particular object.
*
- * Returns: the handler id
+ * Returns: the handler id (always greater than 0 for successful connections)
*/
gulong
g_signal_connect_closure (gpointer instance,
SignalNode *node = LOOKUP_SIGNAL_NODE (signal_id);
if (detail && !(node->flags & G_SIGNAL_DETAILED))
- g_warning ("%s: signal `%s' does not support details", G_STRLOC, detailed_signal);
+ g_warning ("%s: signal '%s' does not support details", G_STRLOC, detailed_signal);
else if (!g_type_is_a (itype, node->itype))
- g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
+ g_warning ("%s: signal '%s' is invalid for instance '%p' of type '%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
else
{
}
}
else
- g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
+ g_warning ("%s: signal '%s' is invalid for instance '%p' of type '%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
SIGNAL_UNLOCK ();
/**
* g_signal_connect_data:
- * @instance: the instance to connect to.
+ * @instance: (type GObject.Object): the instance to connect to.
* @detailed_signal: a string of the form "signal-name::detail".
* @c_handler: the #GCallback to connect.
* @data: data to pass to @c_handler calls.
* Connects a #GCallback function to a signal for a particular object. Similar
* to g_signal_connect(), but allows to provide a #GClosureNotify for the data
* which will be called when the signal handler is disconnected and no longer
- * used. Specify @connect_flags if you need <literal>..._after()</literal> or
- * <literal>..._swapped()</literal> variants of this function.
+ * used. Specify @connect_flags if you need `..._after()` or
+ * `..._swapped()` variants of this function.
*
- * Returns: the handler id
+ * Returns: the handler id (always greater than 0 for successful connections)
*/
gulong
g_signal_connect_data (gpointer instance,
node_check_deprecated (node);
if (detail && !(node->flags & G_SIGNAL_DETAILED))
- g_warning ("%s: signal `%s' does not support details", G_STRLOC, detailed_signal);
+ g_warning ("%s: signal '%s' does not support details", G_STRLOC, detailed_signal);
else if (!g_type_is_a (itype, node->itype))
- g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
+ g_warning ("%s: signal '%s' is invalid for instance '%p' of type '%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
else
{
}
}
else
- g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
+ g_warning ("%s: signal '%s' is invalid for instance '%p' of type '%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
SIGNAL_UNLOCK ();
/**
* g_signal_handler_block:
- * @instance: The instance to block the signal handler of.
+ * @instance: (type GObject.Object): The instance to block the signal handler of.
* @handler_id: Handler id of the handler to be blocked.
*
* Blocks a handler of an instance so it will not be called during any
handler->block_count += 1;
}
else
- g_warning ("%s: instance `%p' has no handler with id `%lu'", G_STRLOC, instance, handler_id);
+ g_warning ("%s: instance '%p' has no handler with id '%lu'", G_STRLOC, instance, handler_id);
SIGNAL_UNLOCK ();
}
/**
* g_signal_handler_unblock:
- * @instance: The instance to unblock the signal handler of.
+ * @instance: (type GObject.Object): The instance to unblock the signal handler of.
* @handler_id: Handler id of the handler to be unblocked.
*
* Undoes the effect of a previous g_signal_handler_block() call. A
if (handler->block_count)
handler->block_count -= 1;
else
- g_warning (G_STRLOC ": handler `%lu' of instance `%p' is not blocked", handler_id, instance);
+ g_warning (G_STRLOC ": handler '%lu' of instance '%p' is not blocked", handler_id, instance);
}
else
- g_warning ("%s: instance `%p' has no handler with id `%lu'", G_STRLOC, instance, handler_id);
+ g_warning ("%s: instance '%p' has no handler with id '%lu'", G_STRLOC, instance, handler_id);
SIGNAL_UNLOCK ();
}
/**
* g_signal_handler_disconnect:
- * @instance: The instance to remove the signal handler from.
+ * @instance: (type GObject.Object): The instance to remove the signal handler from.
* @handler_id: Handler id of the handler to be disconnected.
*
* Disconnects a handler from an instance so it will not be called during
handler_unref_R (signal_id, instance, handler);
}
else
- g_warning ("%s: instance `%p' has no handler with id `%lu'", G_STRLOC, instance, handler_id);
+ g_warning ("%s: instance '%p' has no handler with id '%lu'", G_STRLOC, instance, handler_id);
SIGNAL_UNLOCK ();
}
/**
* g_signal_handler_is_connected:
- * @instance: The instance where a signal handler is sought.
+ * @instance: (type GObject.Object): The instance where a signal handler is sought.
* @handler_id: the handler id.
*
* Returns whether @handler_id is the id of a handler connected to @instance.
return connected;
}
+/**
+ * g_signal_handlers_destroy:
+ * @instance: (type GObject.Object): The instance whose signal handlers are destroyed
+ *
+ * Destroy all signal handlers of a type instance. This function is
+ * an implementation detail of the #GObject dispose implementation,
+ * and should not be used outside of the type system.
+ */
void
g_signal_handlers_destroy (gpointer instance)
{
/**
* g_signal_handler_find:
- * @instance: The instance owning the signal handler to be found.
+ * @instance: (type GObject.Object): The instance owning the signal handler to be found.
* @mask: Mask indicating which of @signal_id, @detail, @closure, @func
* and/or @data the handler has to match.
* @signal_id: Signal the handler has to be connected to.
/**
* g_signal_handlers_block_matched:
- * @instance: The instance to block handlers from.
+ * @instance: (type GObject.Object): The instance to block handlers from.
* @mask: Mask indicating which of @signal_id, @detail, @closure, @func
* and/or @data the handlers have to match.
* @signal_id: Signal the handlers have to be connected to.
/**
* g_signal_handlers_unblock_matched:
- * @instance: The instance to unblock handlers from.
+ * @instance: (type GObject.Object): The instance to unblock handlers from.
* @mask: Mask indicating which of @signal_id, @detail, @closure, @func
* and/or @data the handlers have to match.
* @signal_id: Signal the handlers have to be connected to.
/**
* g_signal_handlers_disconnect_matched:
- * @instance: The instance to remove handlers from.
+ * @instance: (type GObject.Object): The instance to remove handlers from.
* @mask: Mask indicating which of @signal_id, @detail, @closure, @func
* and/or @data the handlers have to match.
* @signal_id: Signal the handlers have to be connected to.
/**
* g_signal_has_handler_pending:
- * @instance: the object whose signal handlers are sought.
+ * @instance: (type GObject.Object): the object whose signal handlers are sought.
* @signal_id: the signal id.
* @detail: the detail.
* @may_be_blocked: whether blocked handlers should count as match.
if (!(node->flags & G_SIGNAL_DETAILED))
{
- g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
+ g_warning ("%s: signal id '%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
SIGNAL_UNLOCK ();
return FALSE;
}
node = LOOKUP_SIGNAL_NODE (signal_id);
if (!node || !g_type_is_a (G_TYPE_FROM_INSTANCE (instance), node->itype))
{
- g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
+ g_warning ("%s: signal id '%u' is invalid for instance '%p'", G_STRLOC, signal_id, instance);
SIGNAL_UNLOCK ();
return;
}
#ifdef G_ENABLE_DEBUG
if (detail && !(node->flags & G_SIGNAL_DETAILED))
{
- g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
+ g_warning ("%s: signal id '%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
SIGNAL_UNLOCK ();
return;
}
for (i = 0; i < node->n_params; i++)
if (!G_TYPE_CHECK_VALUE_TYPE (param_values + i, node->param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE))
{
- g_critical ("%s: value for `%s' parameter %u for signal \"%s\" is of type `%s'",
+ g_critical ("%s: value for '%s' parameter %u for signal \"%s\" is of type '%s'",
G_STRLOC,
type_debug_name (node->param_types[i]),
i,
{
if (!return_value)
{
- g_critical ("%s: return value `%s' for signal \"%s\" is (NULL)",
+ g_critical ("%s: return value '%s' for signal \"%s\" is (NULL)",
G_STRLOC,
type_debug_name (node->return_type),
node->name);
}
else if (!node->accumulator && !G_TYPE_CHECK_VALUE_TYPE (return_value, node->return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE))
{
- g_critical ("%s: return value `%s' for signal \"%s\" is of type `%s'",
+ g_critical ("%s: return value '%s' for signal \"%s\" is of type '%s'",
G_STRLOC,
type_debug_name (node->return_type),
node->name,
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 */
- )
+ _g_closure_is_void (node->single_va_closure, instance)))
{
HandlerList* hlist = handler_list_lookup (node->signal_id, instance);
if (hlist == NULL || hlist->handlers == NULL)
}
/**
- * g_signal_emit_valist:
+ * g_signal_emit_valist: (skip)
* @instance: the instance the signal is being emitted on.
* @signal_id: the signal id
* @detail: the detail
node = LOOKUP_SIGNAL_NODE (signal_id);
if (!node || !g_type_is_a (G_TYPE_FROM_INSTANCE (instance), node->itype))
{
- g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
+ g_warning ("%s: signal id '%u' is invalid for instance '%p'", G_STRLOC, signal_id, instance);
SIGNAL_UNLOCK ();
return;
}
#ifndef G_DISABLE_CHECKS
if (detail && !(node->flags & G_SIGNAL_DETAILED))
{
- g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
+ g_warning ("%s: signal id '%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
SIGNAL_UNLOCK ();
return;
}
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 */
- )
+ if (node->single_va_closure != NULL)
{
HandlerList* hlist = handler_list_lookup (node->signal_id, instance);
Handler *fastpath_handler = NULL;
emission.ihint.run_type = run_type;
emission.state = EMISSION_RUN;
emission.chain_type = instance_type;
- emission_push (&g_recursive_emissions, &emission);
+ emission_push (&emission);
if (fastpath_handler)
handler_ref (fastpath_handler);
SIGNAL_LOCK ();
emission.chain_type = G_TYPE_NONE;
- emission_pop (&g_recursive_emissions, &emission);
+ emission_pop (&emission);
if (fastpath_handler)
handler_unref_R (signal_id, instance, fastpath_handler);
return;
}
}
+ SIGNAL_UNLOCK ();
n_params = node->n_params;
signal_return_type = node->return_type;
GType ptype = node->param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE;
gboolean static_scope = node->param_types[i] & G_SIGNAL_TYPE_STATIC_SCOPE;
- SIGNAL_UNLOCK ();
G_VALUE_COLLECT_INIT (param_values + i, ptype,
var_args,
static_scope ? G_VALUE_NOCOPY_CONTENTS : 0,
return;
}
- SIGNAL_LOCK ();
}
- SIGNAL_UNLOCK ();
instance_and_params->g_type = 0;
- g_value_init (instance_and_params, G_TYPE_FROM_INSTANCE (instance));
- g_value_set_instance (instance_and_params, instance);
+ g_value_init_from_instance (instance_and_params, instance);
if (signal_return_type == G_TYPE_NONE)
signal_emit_unlocked_R (node, detail, instance, NULL, instance_and_params);
else
/**
* g_signal_emit:
- * @instance: the instance the signal is being emitted on.
+ * @instance: (type GObject.Object): the instance the signal is being emitted on.
* @signal_id: the signal id
* @detail: the detail
* @...: parameters to be passed to the signal, followed by a
/**
* g_signal_emit_by_name:
- * @instance: the instance the signal is being emitted on.
+ * @instance: (type GObject.Object): the instance the signal is being emitted on.
* @detailed_signal: a string of the form "signal-name::detail".
* @...: parameters to be passed to the signal, followed by a
* location for the return value. If the return type of the signal
va_end (var_args);
}
else
- g_warning ("%s: signal name `%s' is invalid for instance `%p' of type `%s'",
+ g_warning ("%s: signal name '%s' is invalid for instance '%p' of type '%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
}
gulong max_sequential_handler_number;
gboolean return_value_altered = FALSE;
-#ifdef G_ENABLE_DEBUG
- IF_DEBUG (SIGNALS, g_trace_instance_signals == instance || g_trap_instance_signals == instance)
- {
- g_message ("%s::%s(%u) emitted (instance=%p, signal-node=%p)",
- g_type_name (G_TYPE_FROM_INSTANCE (instance)),
- node->name, detail,
- instance, node);
- if (g_trap_instance_signals == instance)
- G_BREAKPOINT ();
- }
-#endif /* G_ENABLE_DEBUG */
-
TRACE(GOBJECT_SIGNAL_EMIT(node->signal_id, detail, instance, G_TYPE_FROM_INSTANCE (instance)));
SIGNAL_LOCK ();
if (node->flags & G_SIGNAL_NO_RECURSE)
{
- Emission *node = emission_find (g_restart_emissions, signal_id, detail, instance);
+ Emission *node = emission_find (signal_id, detail, instance);
if (node)
{
emission.ihint.run_type = 0;
emission.state = 0;
emission.chain_type = G_TYPE_NONE;
- emission_push ((node->flags & G_SIGNAL_NO_RECURSE) ? &g_restart_emissions : &g_recursive_emissions, &emission);
+ emission_push (&emission);
class_closure = signal_lookup_closure (node, instance);
EMIT_RESTART:
if (handler_list)
handler_unref_R (signal_id, instance, handler_list);
- emission_pop ((node->flags & G_SIGNAL_NO_RECURSE) ? &g_restart_emissions : &g_recursive_emissions, &emission);
+ emission_pop (&emission);
SIGNAL_UNLOCK ();
if (accumulator)
g_value_unset (&accu);
* that a return of %TRUE stops the signal emission: no further
* callbacks will be invoked, while a return of %FALSE allows
* the emission to continue. The idea here is that a %TRUE return
- * indicates that the callback <emphasis>handled</emphasis> the signal,
- * and no further handling is needed.
+ * indicates that the callback handled the signal, and no further
+ * handling is needed.
*
* Since: 2.4
*
projects / platform / upstream / glib.git / blobdiff