CLEvent callbacks for HLB and LLB.

1 files changed, 19 insertions, 0 deletions

diff --git a/src/com/jogamp/opencl/CLEvent.java b/src/com/jogamp/opencl/CLEvent.java
index b7df1465..8423e7c6 100644
--- a/src/com/jogamp/opencl/CLEvent.java
+++ b/src/com/jogamp/opencl/CLEvent.java
@@ -1,7 +1,10 @@
 package com.jogamp.opencl;
 
+import com.jogamp.opencl.impl.CLEventCallback;
+import java.util.List;
 import com.jogamp.common.nio.PointerBuffer;
 import java.nio.Buffer;
+import java.util.ArrayList;
 
 import static com.jogamp.opencl.CL.*;
 import static com.jogamp.opencl.CLException.*;
@@ -25,6 +28,22 @@ public class CLEvent extends CLObject implements CLResource {
         this.eventProfilingInfo = new CLEventProfilingInfoAccessor();
     }
 
+    /**
+     * Registers a callback which will be called when the event terminates (COMPLETE or ERROR).
+     */
+    public void registerCallback(final CLEventListener callback) {
+        this.registerCallback(callback, ExecutionStatus.COMPLETE);
+    }
+
+    // apparently only ExecutionStatus.COMPLETE is allowed -> private
+    private void registerCallback(final CLEventListener callback, ExecutionStatus trigger) {
+        cl.clSetEventCallback(ID, trigger.STATUS, new CLEventCallback() {
+            public void eventStateChanged(long event, int status) {
+                callback.eventStateChanged(CLEvent.this, status);
+            }
+        });
+    }
+
     public void release() {
         int ret = cl.clReleaseEvent(ID);
         checkForError(ret, "can not release event");