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gobject: use per-object bit-lock instead of global mutex for notify-queue

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This commit is contained in:
Thomas Haller 2023-12-20 09:55:32 +01:00
parent c66880e46f
commit cf044ba7ad
1 changed files with 10 additions and 11 deletions
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21
gobject/gobject.c
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@ -124,6 +124,7 @@ enum {
* integers to GObjectPrivate. But increasing memory usage for more parallelism
* (per-object!) is not worth it. */
#define OPTIONAL_BIT_LOCK_WEAK_REFS 1
#define OPTIONAL_BIT_LOCK_NOTIFY 2
#if SIZEOF_INT == 4 && GLIB_SIZEOF_VOID_P == 8
#define HAVE_OPTIONAL_FLAGS_IN_GOBJECT 1
@ -232,8 +233,6 @@ static guint (*floating_flag_handler) (GObject*, gint) = object_floating_flag_ha
static GQuark quark_weak_locations = 0;
static GRWLock weak_locations_lock;
G_LOCK_DEFINE_STATIC(notify_lock);
#if HAVE_PRIVATE
G_ALWAYS_INLINE static inline GObjectPrivate *
g_object_get_instance_private (GObject *object)
@ -321,7 +320,7 @@ g_object_notify_queue_freeze (GObject *object)
{
GObjectNotifyQueue *nqueue;
G_LOCK(notify_lock);
object_bit_lock (object, OPTIONAL_BIT_LOCK_NOTIFY);
nqueue = g_datalist_id_get_data (&object->qdata, quark_notify_queue);
if (!nqueue)
{
@ -338,7 +337,7 @@ g_object_notify_queue_freeze (GObject *object)
nqueue->freeze_count++;
out:
G_UNLOCK(notify_lock);
object_bit_unlock (object, OPTIONAL_BIT_LOCK_NOTIFY);
return nqueue;
}
@ -352,7 +351,7 @@ g_object_notify_queue_thaw (GObject *object,
GSList *slist;
guint n_pspecs = 0;
G_LOCK(notify_lock);
object_bit_lock (object, OPTIONAL_BIT_LOCK_NOTIFY);
if (!nqueue)
{
@ -363,7 +362,7 @@ g_object_notify_queue_thaw (GObject *object,
/* Just make sure we never get into some nasty race condition */
if (G_UNLIKELY (!nqueue || nqueue->freeze_count == 0))
{
G_UNLOCK (notify_lock);
object_bit_unlock (object, OPTIONAL_BIT_LOCK_NOTIFY);
g_critical ("%s: property-changed notification for %s(%p) is not frozen",
G_STRFUNC, G_OBJECT_TYPE_NAME (object), object);
return;
@ -372,7 +371,7 @@ g_object_notify_queue_thaw (GObject *object,
nqueue->freeze_count--;
if (nqueue->freeze_count)
{
G_UNLOCK (notify_lock);
object_bit_unlock (object, OPTIONAL_BIT_LOCK_NOTIFY);
return;
}
@ -384,7 +383,7 @@ g_object_notify_queue_thaw (GObject *object,
}
g_datalist_id_set_data (&object->qdata, quark_notify_queue, NULL);
G_UNLOCK(notify_lock);
object_bit_unlock (object, OPTIONAL_BIT_LOCK_NOTIFY);
if (n_pspecs)
{
@ -405,7 +404,7 @@ g_object_notify_queue_add (GObject *object,
GParamSpec *pspec,
gboolean in_init)
{
G_LOCK(notify_lock);
object_bit_lock (object, OPTIONAL_BIT_LOCK_NOTIFY);
if (!nqueue)
{
@ -419,7 +418,7 @@ g_object_notify_queue_add (GObject *object,
{
/* We don't have a notify queue and are not in_init. The event
* is not to be queued. The caller will dispatch directly. */
G_UNLOCK (notify_lock);
object_bit_unlock (object, OPTIONAL_BIT_LOCK_NOTIFY);
return FALSE;
}
@ -442,7 +441,7 @@ g_object_notify_queue_add (GObject *object,
nqueue->n_pspecs++;
}
G_UNLOCK(notify_lock);
object_bit_unlock (object, OPTIONAL_BIT_LOCK_NOTIFY);
return TRUE;
}