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diff --git a/src/com/jogamp/opencl/llb/impl/CLImpl.java b/src/com/jogamp/opencl/llb/impl/CLImpl.java
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+/*
+ * Copyright 2009 - 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+/*
+ * Created on Monday, June 07 2010 at 04:25
+ */
+package com.jogamp.opencl.llb.impl;
+
+import com.jogamp.common.nio.PointerBuffer;
+import com.jogamp.common.os.Platform;
+import com.jogamp.common.util.LongLongHashMap;
+import com.jogamp.opencl.CLErrorHandler;
+import com.jogamp.opencl.CLException;
+import java.nio.ByteBuffer;
+import java.nio.IntBuffer;
+
+import static com.jogamp.common.nio.Buffers.*;
+
+/**
+ * Java bindings to OpenCL, the Open Computing Language.
+ * @author Michael Bien
+ */
+public class CLImpl extends CLAbstractImpl {
+
+    //maps the context id to its error handler's global object pointer
+    private final LongLongHashMap contextCallbackMap;
+
+    public CLImpl(CLProcAddressTable addressTable) {
+        super(addressTable);
+        this.contextCallbackMap = new LongLongHashMap();
+        this.contextCallbackMap.setKeyNotFoundValue(0);
+    }
+
+    @Override
+    public long clCreateContext(PointerBuffer properties, PointerBuffer devices, CLErrorHandler pfn_notify, IntBuffer errcode_ret) {
+
+        if (properties != null && !properties.isDirect()) {
+            throw new RuntimeException("Argument \"properties\" was not a direct buffer");
+        }
+
+        if (errcode_ret != null && !errcode_ret.isDirect()) {
+            throw new RuntimeException("Argument \"errcode_ret\" was not a direct buffer");
+        }
+
+        final long address = addressTable._addressof_clCreateContext;
+        if (address == 0) {
+            throw new UnsupportedOperationException("Method not available");
+        }
+
+        long[] global = new long[1];
+        long ctx = this.clCreateContext0(
+                properties != null ? properties.getBuffer() : null, getDirectBufferByteOffset(properties),
+                devices != null ? devices.remaining() : 0, devices != null ? devices.getBuffer() : null, getDirectBufferByteOffset(devices),
+                pfn_notify, global, errcode_ret, getDirectBufferByteOffset(errcode_ret), address);
+
+        if (pfn_notify != null && global[0] != 0) {
+            synchronized (contextCallbackMap) {
+                contextCallbackMap.put(ctx, global[0]);
+            }
+        }
+        return ctx;
+    }
+
+    private native long clCreateContext0(Object cl_context_properties, int props_offset, int numDevices, Object devices, int devices_offset, Object pfn_notify, long[] global, Object errcode_ret, int err_offset, long address);
+
+    @Override
+    public long clCreateContextFromType(PointerBuffer properties, long device_type, CLErrorHandler pfn_notify, IntBuffer errcode_ret) {
+        if (properties != null && !properties.isDirect()) {
+            throw new RuntimeException("Argument \"properties\" was not a direct buffer");
+        }
+
+        if (errcode_ret != null && !errcode_ret.isDirect()) {
+            throw new RuntimeException("Argument \"errcode_ret\" was not a direct buffer");
+        }
+
+        final long address = addressTable._addressof_clCreateContextFromType;
+        if (address == 0) {
+            throw new UnsupportedOperationException("Method not available");
+        }
+
+        long[] global = new long[1];
+        long ctx = this.clCreateContextFromType0(
+                properties != null ? properties.getBuffer() : null, getDirectBufferByteOffset(properties),
+                device_type, pfn_notify, global, errcode_ret, getDirectBufferByteOffset(errcode_ret), address);
+
+        if (pfn_notify != null && global[0] != 0) {
+            synchronized (contextCallbackMap) {
+                contextCallbackMap.put(ctx, global[0]);
+            }
+        }
+        return ctx;
+    }
+
+    private native long clCreateContextFromType0(Object properties, int props_offset, long device_type, Object pfn_notify, long[] global, Object errcode_ret, int err_offset, long address);
+
+    @Override
+    public int clReleaseContext(long context) {
+        long global = 0;
+        synchronized (contextCallbackMap) {
+            global = contextCallbackMap.remove(context);
+        }
+
+        final long address = addressTable._addressof_clReleaseContext;
+        if (address == 0) {
+            throw new UnsupportedOperationException("Method not available");
+        }
+        return clReleaseContextImpl(context, global, address);
+    }
+
+    /** Interface to C language function: <br> <code> int32_t {@native clReleaseContext}(cl_context context); </code>    */
+    public native int clReleaseContextImpl(long context, long global, long address);
+
+    /** Interface to C language function: <br> <code> int32_t clBuildProgram(cl_program, uint32_t, cl_device_id * , const char * , void * ); </code>    */
+    @Override
+    public int clBuildProgram(long program, int deviceCount, PointerBuffer deviceList, String options, BuildProgramCallback cb) {
+        if (deviceList != null && !deviceList.isDirect()) {
+            throw new RuntimeException("Argument \"properties\" was not a direct buffer");
+        }
+
+        final long address = addressTable._addressof_clBuildProgram;
+        if (address == 0) {
+            throw new UnsupportedOperationException("Method not available");
+        }
+        return clBuildProgram0(program, deviceCount, deviceList != null ? deviceList.getBuffer() : null,
+                getDirectBufferByteOffset(deviceList), options, cb, address);
+    }
+
+    /** Entry point to C language function: <code> int32_t clBuildProgram(cl_program, uint32_t, cl_device_id * , const char * , void * ); </code>    */
+    private native int clBuildProgram0(long program, int deviceCount, Object deviceList, int deviceListOffset, String options, BuildProgramCallback cb, long address);
+
+
+    @Override
+    public int clSetEventCallback(long event, int trigger, CLEventCallback callback) {
+        final long address = addressTable._addressof_clSetEventCallback;
+        if (address == 0) {
+            throw new UnsupportedOperationException("Method not available");
+        }
+        return clSetEventCallback0(event, trigger, callback, address);
+    }
+
+    private native int clSetEventCallback0(long event, int type, CLEventCallback cb, long address);
+
+
+    @Override
+    public int clSetMemObjectDestructorCallback(long memObjID, CLMemObjectDestructorCallback cb) {
+        final long address = addressTable._addressof_clSetMemObjectDestructorCallback;
+        if (address == 0) {
+            throw new UnsupportedOperationException("Method not available");
+        }
+        return clSetMemObjectDestructorCallback0(memObjID, cb, address);
+    }
+
+    private native int clSetMemObjectDestructorCallback0(long memObjID, CLMemObjectDestructorCallback cb, long address);
+
+
+    /** Interface to C language function: <br> <code> void *  {@native clEnqueueMapImage}(cl_command_queue command_queue, cl_mem image, uint32_t blocking_map, uint64_t map_flags, const size_t * , const size_t * , size_t *  image_row_pitch, size_t *  image_slice_pitch, uint32_t num_events_in_wait_list, cl_event *  event_wait_list, cl_event *  event, int32_t *  errcode_ret); </code>
+    @param origin a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param range a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param image_row_pitch a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param image_slice_pitch a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param event_wait_list a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param event a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param errcode_ret a direct {@link java.nio.IntBuffer}   */
+    @Override
+    public ByteBuffer clEnqueueMapImage(long command_queue, long image, int blocking_map, long map_flags,
+            PointerBuffer origin, PointerBuffer range,
+            PointerBuffer image_row_pitch, PointerBuffer image_slice_pitch,
+            int num_events_in_wait_list,
+            PointerBuffer event_wait_list, PointerBuffer event, IntBuffer errcode_ret) {
+
+        if (origin != null && !origin.isDirect()) {
+            throw new CLException("Argument \"origin\" was not a direct buffer");
+        }
+        if (range != null && !range.isDirect()) {
+            throw new CLException("Argument \"range\" was not a direct buffer");
+        }
+        if (image_row_pitch != null && !image_row_pitch.isDirect()) {
+            throw new CLException("Argument \"image_row_pitch\" was not a direct buffer");
+        }
+        if (image_slice_pitch != null && !image_slice_pitch.isDirect()) {
+            throw new CLException("Argument \"image_slice_pitch\" was not a direct buffer");
+        }
+        if (event_wait_list != null && !event_wait_list.isDirect()) {
+            throw new CLException("Argument \"event_wait_list\" was not a direct buffer");
+        }
+        if (event != null && !event.isDirect()) {
+            throw new CLException("Argument \"event\" was not a direct buffer");
+        }
+        if (errcode_ret != null && !errcode_ret.isDirect()) {
+            throw new CLException("Argument \"errcode_ret\" was not a direct buffer");
+        }
+
+        final long mapImageAddress = addressTable._addressof_clEnqueueMapImage;
+        if (mapImageAddress == 0) {
+            throw new UnsupportedOperationException("Method not available");
+        }
+        final long getImageInfoAddress = addressTable._addressof_clGetImageInfo;
+        if (getImageInfoAddress == 0) {
+            throw new UnsupportedOperationException("Method not available");
+        }
+        ByteBuffer _res;
+        _res = clEnqueueMapImage0(command_queue, image, blocking_map, map_flags, origin != null ? origin.getBuffer() : null,
+                getDirectBufferByteOffset(origin), range != null ? range.getBuffer() : null,
+                getDirectBufferByteOffset(range), image_row_pitch != null ? image_row_pitch.getBuffer() : null,
+                getDirectBufferByteOffset(image_row_pitch), image_slice_pitch != null ? image_slice_pitch.getBuffer() : null,
+                getDirectBufferByteOffset(image_slice_pitch), num_events_in_wait_list,
+                event_wait_list != null ? event_wait_list.getBuffer() : null, getDirectBufferByteOffset(event_wait_list),
+                event != null ? event.getBuffer() : null, getDirectBufferByteOffset(event), errcode_ret,
+                getDirectBufferByteOffset(errcode_ret));
+        if (_res == null) {
+            return null;
+        }
+        nativeOrder(_res);
+        return _res;
+    }
+
+    /** Entry point to C language function: <code> void *  {@native clEnqueueMapImage}(cl_command_queue command_queue, cl_mem image, uint32_t blocking_map, uint64_t map_flags, const size_t * , const size_t * , size_t *  image_row_pitch, size_t *  image_slice_pitch, uint32_t num_events_in_wait_list, cl_event *  event_wait_list, cl_event *  event, int32_t *  errcode_ret); </code>
+    @param origin a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param range a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param image_row_pitch a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param image_slice_pitch a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param event_wait_list a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param event a direct {@link com.jogamp.common.nio.PointerBuffer}
+    @param errcode_ret a direct {@link java.nio.IntBuffer}   */
+    private native ByteBuffer clEnqueueMapImage0(long command_queue, long image, int blocking_map, long map_flags,
+            Object origin, int origin_byte_offset, Object range, int range_byte_offset, Object image_row_pitch,
+            int image_row_pitch_byte_offset, Object image_slice_pitch, int image_slice_pitch_byte_offset,
+            int num_events_in_wait_list, Object event_wait_list, int event_wait_list_byte_offset, Object event,
+            int event_byte_offset, Object errcode_ret, int errcode_ret_byte_offset);
+
+    /**
+     * Returns the extension function address for the given function name.
+     */
+    public long clGetExtensionFunctionAddress(String name) {
+        ByteBuffer res = super.clGetExtensionFunctionAddressImpl(name);
+        if(res == null) {
+            return 0;
+        }else if (Platform.is32Bit()) {
+            return res.getInt();
+        } else {
+            return res.getLong();
+        }
+    }
+
+    public CLProcAddressTable getAddressTable() {
+        return addressTable;
+    }
+
+    /*
+    private static void convert32To64(long[] values) {
+    if (values.length % 2 == 1) {
+    values[values.length - 1] = values[values.length / 2] >>> 32;
+    }
+    for (int i = values.length - 1 - values.length % 2; i >= 0; i -= 2) {
+    long temp = values[i / 2];
+    values[i - 1] = temp >>> 32;
+    values[i] = temp & 0x00000000FFFFFFFFL;
+    }
+    }
+     */
+
+
+
+}