diff --git a/cpu_ref/rsCpuScript.h b/cpu_ref/rsCpuScript.h
index 7d52507..c8a73bb 100644
--- a/cpu_ref/rsCpuScript.h
+++ b/cpu_ref/rsCpuScript.h
@@ -52,6 +52,12 @@
 
     virtual void invokeFunction(uint32_t slot, const void *params, size_t paramLength);
     virtual int invokeRoot();
+    virtual void preLaunch(uint32_t slot, const Allocation * ain,
+                           Allocation * aout, const void * usr,
+                           uint32_t usrLen, const RsScriptCall *sc);
+    virtual void postLaunch(uint32_t slot, const Allocation * ain,
+                            Allocation * aout, const void * usr,
+                            uint32_t usrLen, const RsScriptCall *sc);
     virtual void invokeForEach(uint32_t slot,
                        const Allocation * ain,
                        Allocation * aout,