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client: unref or destroy proxy when releasing queue

Browse source 
When we release event queue with queued events, we can leak
proxies in some cases.

Signed-off-by: Marek Chalupa <mchqwerty@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Marek Chalupa 2014-12-19 14:53:05 +01:00 • committed by Daniel Stone
parent 73cb90763c
commit 5c70c03190
1 changed files with 60 additions and 43 deletions
Download patch file Download diff file Expand all files Collapse all files

103
src/wayland-client.c
View file

@ -217,15 +217,59 @@ wl_event_queue_init(struct wl_event_queue *queue, struct wl_display *display)
queue->display = display;
}
static void
decrease_closure_args_refcount(struct wl_closure *closure)
{
const char *signature;
struct argument_details arg;
int i, count;
struct wl_proxy *proxy;
signature = closure->message->signature;
count = arg_count_for_signature(signature);
for (i = 0; i < count; i++) {
signature = get_next_argument(signature, &arg);
switch (arg.type) {
case 'n':
case 'o':
proxy = (struct wl_proxy *) closure->args[i].o;
if (proxy) {
if (proxy->flags & WL_PROXY_FLAG_DESTROYED)
closure->args[i].o = NULL;
proxy->refcount--;
if (!proxy->refcount)
free(proxy);
}
break;
default:
break;
}
}
}
void
proxy_destroy(struct wl_proxy *proxy);
static void
wl_event_queue_release(struct wl_event_queue *queue)
{
struct wl_closure *closure;
struct wl_proxy *proxy;
while (!wl_list_empty(&queue->event_list)) {
closure = container_of(queue->event_list.next,
struct wl_closure, link);
wl_list_remove(&closure->link);
decrease_closure_args_refcount(closure);
proxy = closure->proxy;
if (proxy->refcount == 1)
proxy_destroy(proxy);
else
--proxy->refcount;
wl_closure_destroy(closure);
}
}
@ -355,19 +399,9 @@ wl_proxy_create_for_id(struct wl_proxy *factory,
return proxy;
}
/** Destroy a proxy object
*
* \param proxy The proxy to be destroyed
*
* \memberof wl_proxy
*/
WL_EXPORT void
wl_proxy_destroy(struct wl_proxy *proxy)
void
proxy_destroy(struct wl_proxy *proxy)
{
struct wl_display *display = proxy->display;
pthread_mutex_lock(&display->mutex);
if (proxy->flags & WL_PROXY_FLAG_ID_DELETED)
wl_map_remove(&proxy->display->objects, proxy->object.id);
else if (proxy->object.id < WL_SERVER_ID_START)
@ -383,7 +417,21 @@ wl_proxy_destroy(struct wl_proxy *proxy)
proxy->refcount--;
if (!proxy->refcount)
free(proxy);
}
/** Destroy a proxy object
*
* \param proxy The proxy to be destroyed
*
* \memberof wl_proxy
*/
WL_EXPORT void
wl_proxy_destroy(struct wl_proxy *proxy)
{
struct wl_display *display = proxy->display;
pthread_mutex_lock(&display->mutex);
proxy_destroy(proxy);
pthread_mutex_unlock(&display->mutex);
}
@ -1076,37 +1124,6 @@ queue_event(struct wl_display *display, int len)
return size;
}
static void
decrease_closure_args_refcount(struct wl_closure *closure)
{
const char *signature;
struct argument_details arg;
int i, count;
struct wl_proxy *proxy;
signature = closure->message->signature;
count = arg_count_for_signature(signature);
for (i = 0; i < count; i++) {
signature = get_next_argument(signature, &arg);
switch (arg.type) {
case 'n':
case 'o':
proxy = (struct wl_proxy *) closure->args[i].o;
if (proxy) {
if (proxy->flags & WL_PROXY_FLAG_DESTROYED)
closure->args[i].o = NULL;
proxy->refcount--;
if (!proxy->refcount)
free(proxy);
}
break;
default:
break;
}
}
}
static void
dispatch_event(struct wl_display *display, struct wl_event_queue *queue)
{