framescheduler: fix edge case crashes

rare UAFs because renderMonitor can call onDisconnect (ugh, that should be changed...)

fixes #11073

1 files changed, 12 insertions, 8 deletions

diff --git a/src/helpers/MonitorFrameScheduler.hpp b/src/helpers/MonitorFrameScheduler.hpp
index e6eab9c9..c9b45a64 100644
--- a/src/helpers/MonitorFrameScheduler.hpp
+++ b/src/helpers/MonitorFrameScheduler.hpp
@@ -22,15 +22,19 @@ class CMonitorFrameScheduler {
     void                    onFrame();
 
   private:
-    bool            canRender();
-    void            onFinishRender();
-    bool            newSchedulingEnabled();
+    bool                       canRender();
+    void                       onFinishRender();
+    bool                       newSchedulingEnabled();
 
-    bool            m_renderAtFrame = true;
-    bool            m_pendingThird  = false;
-    hrc::time_point m_lastRenderBegun;
+    bool                       m_renderAtFrame = true;
+    bool                       m_pendingThird  = false;
+    hrc::time_point            m_lastRenderBegun;
 
-    PHLMONITORREF   m_monitor;
+    PHLMONITORREF              m_monitor;
 
-    UP<CEGLSync>    m_sync;
+    UP<CEGLSync>               m_sync;
+
+    WP<CMonitorFrameScheduler> m_self;
+
+    friend class CMonitor;
 };