Release RefreshRateOveray's SurfaceControl on the main thread
SurfaceControl assumes that its destruction happens without
SurfaceFlinger::mStateLock held, otherwise it causes a deadlock.
Bug: 237485868
Test: Enable refresh rate overlay and change resolution
Change-Id: I152586aaaf414ed0b90a6e6a8d78e867146ab96c
diff --git a/services/surfaceflinger/RefreshRateOverlay.h b/services/surfaceflinger/RefreshRateOverlay.h
index a465a36..a2966e6 100644
--- a/services/surfaceflinger/RefreshRateOverlay.h
+++ b/services/surfaceflinger/RefreshRateOverlay.h
@@ -33,6 +33,20 @@
class GraphicBuffer;
class SurfaceControl;
+class SurfaceFlinger;
+
+// Helper class to delete the SurfaceControl on a helper thread as
+// SurfaceControl assumes its destruction happens without SurfaceFlinger::mStateLock held.
+class SurfaceControlHolder {
+public:
+ explicit SurfaceControlHolder(sp<SurfaceControl> sc) : mSurfaceControl(std::move(sc)){};
+ ~SurfaceControlHolder();
+
+ const sp<SurfaceControl>& get() const { return mSurfaceControl; }
+
+private:
+ sp<SurfaceControl> mSurfaceControl;
+};
class RefreshRateOverlay {
public:
@@ -75,7 +89,7 @@
const FpsRange mFpsRange; // For color interpolation.
const bool mShowSpinner;
- const sp<SurfaceControl> mSurfaceControl;
+ const std::unique_ptr<SurfaceControlHolder> mSurfaceControl;
};
} // namespace android