app: fix race condition between Window.Invalidate and event loop

References: https://todo.sr.ht/~eliasnaur/gio/603 Signed-off-by: Elias Naur <mail@eliasnaur.com>
2024-10-25 20:38:37 +02:00
parent 520efdfa75
commit aa158e0c9c
1 changed files with 3 additions and 1 deletions
@@ -394,6 +394,8 @@ func (c *callbacks) SetDriver(d driver) {
 	if d == nil {
 		panic("nil driver")
 	}
+	c.w.invMu.Lock()
+	defer c.w.invMu.Unlock()
 	c.w.driver = d
 }

@@ -647,8 +649,8 @@ func (w *Window) processEvent(e event.Event) bool {
 		w.destroyGPU()
 		w.invMu.Lock()
 		w.mayInvalidate = false
-		w.invMu.Unlock()
 		w.driver = nil
+		w.invMu.Unlock()
 		if q := w.timer.quit; q != nil {
 			q <- struct{}{}
 			<-q