3 files changed, 30 insertions, 1 deletions
diff --git a/src/com/mbien/opencl/CLCommandQueue.java b/src/com/mbien/opencl/CLCommandQueue.java
index 05042333..a33593ad 100644
--- a/src/com/mbien/opencl/CLCommandQueue.java
+++ b/src/com/mbien/opencl/CLCommandQueue.java
@@ -990,6 +990,15 @@ public class CLCommandQueue extends CLObject implements CLResource {
     }
 
     /**
+     * Calls {@native clFlush}.
+     */
+    public CLCommandQueue flush() {
+        int ret = cl.clFlush(ID);
+        checkForError(ret, "can not flush command queue");
+        return this;
+    }
+
+    /**
      * Returns true only when {@link Mode#PROFILING_MODE} has been enabled.
      */
     public boolean isProfilingEnabled() {
diff --git a/src/com/mbien/opencl/CLKernel.java b/src/com/mbien/opencl/CLKernel.java
index a50478aa..696007ba 100644
--- a/src/com/mbien/opencl/CLKernel.java
+++ b/src/com/mbien/opencl/CLKernel.java
@@ -82,6 +82,11 @@ public class CLKernel extends CLObject implements CLResource, Cloneable {
         return this;
     }
 
+    public CLKernel putNullArg(int size) {
+        setNullArg(argIndex++, size);
+        return this;
+    }
+
     public CLKernel putArgs(CLMemory<?>... values) {
         setArgs(argIndex, values);
         argIndex += values.length;
@@ -126,6 +131,11 @@ public class CLKernel extends CLObject implements CLResource, Cloneable {
         return this;
     }
 
+    public CLKernel setNullArg(int argumentIndex, int size) {
+        setArgument(argumentIndex, size, null);
+        return this;
+    }
+
     public CLKernel setArgs(CLMemory<?>... values) {
         setArgs(0, values);
         return this;
diff --git a/src/com/mbien/opencl/CLMemory.java b/src/com/mbien/opencl/CLMemory.java
index 84aeb6b1..275f39ff 100644
--- a/src/com/mbien/opencl/CLMemory.java
+++ b/src/com/mbien/opencl/CLMemory.java
@@ -76,7 +76,17 @@ public abstract class CLMemory <B extends Buffer> extends CLObject implements CL
     }
 
     /**
-     * Returns the size of the wrapped direct buffer in byte.
+     * Returns the capacity of the wrapped direct buffer or 0 if no buffer available.
+     */
+    public int getCapacity() {
+        if(buffer == null) {
+            return 0;
+        }
+        return buffer.capacity();
+    }
+
+    /**
+     * Returns the size of the wrapped direct buffer in byte or 0 if no buffer available.
      */
     public int getSize() {
         if(buffer == null) {