Throttle low priority RS threads by sleeping once per frame to avoid starving other apps.
diff --git a/libs/rs/rsContext.h b/libs/rs/rsContext.h
index 4e0f653..1770ee6 100644
--- a/libs/rs/rsContext.h
+++ b/libs/rs/rsContext.h
@@ -105,7 +105,7 @@
 
     uint32_t getMessageToClient(void *data, size_t *receiveLen, size_t bufferLen, bool wait);
     bool sendMessageToClient(void *data, uint32_t cmdID, size_t len, bool waitForSpace);
-    bool runScript(Script *s, uint32_t launchID);
+    uint32_t runScript(Script *s, uint32_t launchID);
 
     void initToClient();
     void deinitToClient();
@@ -194,6 +194,7 @@
 
     uint32_t mWidth;
     uint32_t mHeight;
+    int32_t mThreadPriority;
 
     bool mRunning;
     bool mExit;
@@ -226,7 +227,7 @@
     void initEGL();
     void deinitEGL();
 
-    bool runRootScript();
+    uint32_t runRootScript();
 
     static void * threadProc(void *);
 
@@ -241,6 +242,9 @@
     uint64_t mTimeLast;
     uint64_t mTimeFrame;
     uint64_t mTimeLastFrame;
+    uint32_t mTimeMSLastFrame;
+    uint32_t mTimeMSLastScript;
+    uint32_t mTimeMSLastSwap;
 };
 
 }