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authorSimon Ser <contact@emersion.fr>2022-06-07 18:18:11 +0200
committerSimon Ser <contact@emersion.fr>2022-06-07 18:18:11 +0200
commitb89ed9015c3fbe8d339e9d65cf70fdca6e5645bc (patch)
tree68c680b39d6f18d19d20ae1ebf0fba0e90d0bacb /util
parent09498499f6e830e70883ef158de16523d4b08c6f (diff)
util/global: fix memory leak on display destroy in wlr_global_destroy_safe
If the display is destroyed before wlr_global_destroy_safe's timer fires, the struct destroy_global_data is leaked. This shouldn't cause issues in practice because the timer will never fire, but makes it harder to spot compositor memory leaks.
Diffstat (limited to 'util')
-rw-r--r--util/global.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/util/global.c b/util/global.c
index fa99a994..93636a89 100644
--- a/util/global.c
+++ b/util/global.c
@@ -4,16 +4,27 @@
struct destroy_global_data {
struct wl_global *global;
struct wl_event_source *event_source;
+ struct wl_listener display_destroy;
};
-static int destroy_global(void *_data) {
- struct destroy_global_data *data = _data;
+static void destroy_global(struct destroy_global_data *data) {
+ wl_list_remove(&data->display_destroy.link);
wl_global_destroy(data->global);
wl_event_source_remove(data->event_source);
free(data);
+}
+
+static int handle_timer_event(void *data) {
+ destroy_global(data);
return 0;
}
+static void handle_display_destroy(struct wl_listener *listener, void *_data) {
+ struct destroy_global_data *data =
+ wl_container_of(listener, data, display_destroy);
+ destroy_global(data);
+}
+
void wlr_global_destroy_safe(struct wl_global *global) {
// Don't destroy the global immediately. If the global has been created
// recently, clients might try to bind to it after we've destroyed it.
@@ -33,11 +44,14 @@ void wlr_global_destroy_safe(struct wl_global *global) {
}
data->global = global;
data->event_source =
- wl_event_loop_add_timer(event_loop, destroy_global, data);
+ wl_event_loop_add_timer(event_loop, handle_timer_event, data);
if (data->event_source == NULL) {
free(data);
wl_global_destroy(global);
return;
}
wl_event_source_timer_update(data->event_source, 5000);
+
+ data->display_destroy.notify = handle_display_destroy;
+ wl_display_add_destroy_listener(display, &data->display_destroy);
}