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Protect access to closure, weak refs and toggle refs arrays

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This fixes https://bugzilla.gnome.org/show_bug.cgi?id=613822
This commit is contained in:
Alberto Garcia 2010-03-26 16:19:13 +01:00 committed by Javier Jardón
parent dd6e15dd24
commit b7616114c6
1 changed files with 26 additions and 4 deletions
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30
gobject/gobject.c
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@ -184,6 +184,9 @@ static void object_interface_check_properties (gpointer func_da
/* --- variables --- */
G_LOCK_DEFINE_STATIC (closure_array_mutex);
G_LOCK_DEFINE_STATIC (weak_refs_mutex);
G_LOCK_DEFINE_STATIC (toggle_refs_mutex);
static GQuark quark_closure_array = 0;
static GQuark quark_weak_refs = 0;
static GQuark quark_toggle_refs = 0;
@ -2232,6 +2235,7 @@ g_object_weak_ref (GObject *object,
g_return_if_fail (notify != NULL);
g_return_if_fail (object->ref_count >= 1);
G_LOCK (weak_refs_mutex);
wstack = g_datalist_id_remove_no_notify (&object->qdata, quark_weak_refs);
if (wstack)
{
@ -2248,6 +2252,7 @@ g_object_weak_ref (GObject *object,
wstack->weak_refs[i].notify = notify;
wstack->weak_refs[i].data = data;
g_datalist_id_set_data_full (&object->qdata, quark_weak_refs, wstack, weak_refs_notify);
G_UNLOCK (weak_refs_mutex);
}
/**
@ -2269,6 +2274,7 @@ g_object_weak_unref (GObject *object,
g_return_if_fail (G_IS_OBJECT (object));
g_return_if_fail (notify != NULL);
G_LOCK (weak_refs_mutex);
wstack = g_datalist_id_get_data (&object->qdata, quark_weak_refs);
if (wstack)
{
@ -2286,6 +2292,7 @@ g_object_weak_unref (GObject *object,
break;
}
}
G_UNLOCK (weak_refs_mutex);
if (!found_one)
g_warning ("%s: couldn't find weak ref %p(%p)", G_STRFUNC, notify, data);
}
@ -2443,13 +2450,18 @@ static void
toggle_refs_notify (GObject *object,
gboolean is_last_ref)
{
ToggleRefStack *tstack = g_datalist_id_get_data (&object->qdata, quark_toggle_refs);
ToggleRefStack tstack, *tstackptr;
G_LOCK (toggle_refs_mutex);
tstackptr = g_datalist_id_get_data (&object->qdata, quark_toggle_refs);
tstack = *tstackptr;
G_UNLOCK (toggle_refs_mutex);
/* Reentrancy here is not as tricky as it seems, because a toggle reference
* will only be notified when there is exactly one of them.
*/
g_assert (tstack->n_toggle_refs == 1);
tstack->toggle_refs[0].notify (tstack->toggle_refs[0].data, tstack->object, is_last_ref);
g_assert (tstack.n_toggle_refs == 1);
tstack.toggle_refs[0].notify (tstack.toggle_refs[0].data, tstack.object, is_last_ref);
}
/**
@ -2505,6 +2517,7 @@ g_object_add_toggle_ref (GObject *object,
g_object_ref (object);
G_LOCK (toggle_refs_mutex);
tstack = g_datalist_id_remove_no_notify (&object->qdata, quark_toggle_refs);
if (tstack)
{
@ -2529,6 +2542,7 @@ g_object_add_toggle_ref (GObject *object,
tstack->toggle_refs[i].data = data;
g_datalist_id_set_data_full (&object->qdata, quark_toggle_refs, tstack,
(GDestroyNotify)g_free);
G_UNLOCK (toggle_refs_mutex);
}
/**
@ -2555,6 +2569,7 @@ g_object_remove_toggle_ref (GObject *object,
g_return_if_fail (G_IS_OBJECT (object));
g_return_if_fail (notify != NULL);
G_LOCK (toggle_refs_mutex);
tstack = g_datalist_id_get_data (&object->qdata, quark_toggle_refs);
if (tstack)
{
@ -2577,6 +2592,7 @@ g_object_remove_toggle_ref (GObject *object,
break;
}
}
G_UNLOCK (toggle_refs_mutex);
if (!found_one)
g_warning ("%s: couldn't find toggle ref %p(%p)", G_STRFUNC, notify, data);
@ -3239,17 +3255,21 @@ object_remove_closure (gpointer data,
GClosure *closure)
{
GObject *object = data;
CArray *carray = g_object_get_qdata (object, quark_closure_array);
CArray *carray;
guint i;
G_LOCK (closure_array_mutex);
carray = g_object_get_qdata (object, quark_closure_array);
for (i = 0; i < carray->n_closures; i++)
if (carray->closures[i] == closure)
{
carray->n_closures--;
if (i < carray->n_closures)
carray->closures[i] = carray->closures[carray->n_closures];
G_UNLOCK (closure_array_mutex);
return;
}
G_UNLOCK (closure_array_mutex);
g_assert_not_reached ();
}
@ -3305,6 +3325,7 @@ g_object_watch_closure (GObject *object,
g_closure_add_marshal_guards (closure,
object, (GClosureNotify) g_object_ref,
object, (GClosureNotify) g_object_unref);
G_LOCK (closure_array_mutex);
carray = g_datalist_id_remove_no_notify (&object->qdata, quark_closure_array);
if (!carray)
{
@ -3320,6 +3341,7 @@ g_object_watch_closure (GObject *object,
}
carray->closures[i] = closure;
g_datalist_id_set_data_full (&object->qdata, quark_closure_array, carray, destroy_closure_array);
G_UNLOCK (closure_array_mutex);
}
/**