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wayland-server: Add wl_client_add_destroy_late_listener

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A late-destroy listener for a client is called after all the client's
resources have been destroyed and the destroy callbacks emitted. This
lives in parallel to the existing client destroy listener, called
immediately before the client's objects get destroyed.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Fixes: wayland/wayland#207
This commit is contained in:
Daniel Stone 2022-07-21 11:07:04 +01:00
parent e886b456ab
commit 51d788de5b
3 changed files with 74 additions and 0 deletions
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24
tests/client-test.c
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@ -41,6 +41,8 @@
struct client_destroy_listener {
struct wl_listener listener;
bool done;
struct wl_listener late_listener;
bool late_done;
};
static void
@ -49,9 +51,20 @@ client_destroy_notify(struct wl_listener *l, void *data)
struct client_destroy_listener *listener =
wl_container_of(l, listener, listener);
assert(!listener->late_done);
listener->done = true;
}
static void
client_late_destroy_notify(struct wl_listener *l, void *data)
{
struct client_destroy_listener *listener =
wl_container_of(l, listener, late_listener);
assert(listener->done);
listener->late_done = true;
}
TEST(client_destroy_listener)
{
struct wl_display *display;
@ -67,21 +80,32 @@ TEST(client_destroy_listener)
a.listener.notify = client_destroy_notify;
a.done = false;
a.late_listener.notify = client_late_destroy_notify;
a.late_done = false;
wl_client_add_destroy_listener(client, &a.listener);
wl_client_add_destroy_late_listener(client, &a.late_listener);
assert(wl_client_get_destroy_listener(client, client_destroy_notify) ==
&a.listener);
assert(wl_client_get_destroy_late_listener(client, client_late_destroy_notify) ==
&a.late_listener);
b.listener.notify = client_destroy_notify;
b.done = false;
b.late_listener.notify = client_late_destroy_notify;
b.late_done = false;
wl_client_add_destroy_listener(client, &b.listener);
wl_client_add_destroy_late_listener(client, &b.late_listener);
wl_list_remove(&a.listener.link);
wl_list_remove(&a.late_listener.link);
wl_client_destroy(client);
assert(!a.done);
assert(!a.late_done);
assert(b.done);
assert(b.late_done);
close(s[0]);
close(s[1]);