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package com.mbien.opencl;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;
import static com.mbien.opencl.CLException.*;
/**
* The command-queue can be used to queue a set of operations in order. Having multiple
* command-queues allows applications to queue multiple independent commands without
* requiring synchronization. Note that this should work as long as these objects are
* not being shared.<b/>
* Sharing of objects across multiple command-queues will require the application to
* perform appropriate synchronization.
* @author Michael Bien
*/
public class CLCommandQueue {
public final long ID;
private final CLContext context;
private final CLDevice device;
private final CL cl;
CLCommandQueue(CLContext context, CLDevice device, long properties) {
this.context = context;
this.cl = context.cl;
this.device = device;
int[] status = new int[1];
this.ID = cl.clCreateCommandQueue(context.ID, device.ID, properties, status, 0);
if(status[0] != CL.CL_SUCCESS)
throw new CLException(status[0], "can not create command queue on "+device);
}
public CLCommandQueue putWriteBuffer(CLBuffer<?> writeBuffer, boolean blockingWrite) {
int ret = cl.clEnqueueWriteBuffer(
ID, writeBuffer.ID, blockingWrite ? CL.CL_TRUE : CL.CL_FALSE,
0, writeBuffer.buffer.capacity(), writeBuffer.buffer,
// 0, null, null); //TODO solve NPE in gluegen when PointerBuffer == null (fast dircet memory path)
0, null, 0, null, 0); //TODO events
if(ret != CL.CL_SUCCESS)
throw new CLException(ret, "can not enqueue WriteBuffer: " + writeBuffer);
return this;
}
public CLCommandQueue putReadBuffer(CLBuffer<?> readBuffer, boolean blockingRead) {
int ret = cl.clEnqueueReadBuffer(
ID, readBuffer.ID, blockingRead ? CL.CL_TRUE : CL.CL_FALSE,
0, readBuffer.buffer.capacity(), readBuffer.buffer,
// 0, null, null); //TODO solve NPE in gluegen when PointerBuffer == null (fast dircet memory path)
0, null, 0, null, 0); //TODO events
if(ret != CL.CL_SUCCESS)
throw new CLException(ret, "can not enqueue ReadBuffer: " + readBuffer);
return this;
}
public CLCommandQueue putBarrier() {
int ret = cl.clEnqueueBarrier(ID);
checkForError(ret, "can not enqueue Barrier");
return this;
}
public CLCommandQueue putCopyBuffer(CLBuffer<?> src, CLBuffer<?> dest, long bytesToCopy) {
int ret = cl.clEnqueueCopyBuffer(
ID, src.ID, dest.ID, src.buffer.position(), dest.buffer.position(), bytesToCopy,
// 0, null, null); //TODO solve NPE in gluegen when PointerBuffer == null
0, null, 0, null, 0); //TODO events
checkForError(ret, "can not copy Buffer");
return this;
}
//TODO implement remaining methods
/*
public CLCommandQueue putCopyImage() {
return this;
}
public CLCommandQueue putCopyBufferToImage() {
return this;
}
public CLCommandQueue putCopyImageToBuffer() {
return this;
}
public CLCommandQueue putMarker() {
return this;
}
public CLCommandQueue putWriteImage() {
return this;
}
public CLCommandQueue putReadImage() {
return this;
}
public CLCommandQueue putTask() {
return this;
}
public CLBuffer putMapBuffer() {
return null;
}
public CLCommandQueue putMapImage() {
return this;
}
public CLCommandQueue putUnmapMemObject() {
return this;
}
public CLCommandQueue putWaitForEvents() {
return this;
}
*/
public CLCommandQueue putNDRangeKernel(CLKernel kernel, int workDimension, long globalWorkOffset, long globalWorkSize, long localWorkSize) {
return this.putNDRangeKernel(
kernel, workDimension,
globalWorkOffset==0 ? null : new long[] {globalWorkOffset},
globalWorkSize ==0 ? null : new long[] {globalWorkSize },
localWorkSize ==0 ? null : new long[] {localWorkSize } );
}
public CLCommandQueue putNDRangeKernel(CLKernel kernel, int workDimension, long[] globalWorkOffset, long[] globalWorkSize, long[] localWorkSize) {
int ret = cl.clEnqueueNDRangeKernel(
ID, kernel.ID, 1,
globalWorkOffset, 0,
globalWorkSize, 0,
localWorkSize, 0,
0,
null, 0,
null, 0 );
if(ret != CL.CL_SUCCESS)
throw new CLException(ret, "can not enqueue NDRangeKernel: " + kernel);
return this;
}
public CLCommandQueue finish() {
int ret = cl.clFinish(ID);
checkForError(ret, "can not finish command queue");
return this;
}
public void release() {
int ret = cl.clReleaseCommandQueue(ID);
context.onCommandQueueReleased(device, this);
checkForError(ret, "can not release command queue");
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final CLCommandQueue other = (CLCommandQueue) obj;
if (this.ID != other.ID) {
return false;
}
if (this.context != other.context && (this.context == null || !this.context.equals(other.context))) {
return false;
}
if (this.device != other.device && (this.device == null || !this.device.equals(other.device))) {
return false;
}
return true;
}
@Override
public int hashCode() {
int hash = 3;
hash = 89 * hash + (int) (this.ID ^ (this.ID >>> 32));
hash = 89 * hash + (this.context != null ? this.context.hashCode() : 0);
hash = 89 * hash + (this.device != null ? this.device.hashCode() : 0);
return hash;
}
/**
* Enumeration for the command-queue settings.
*/
public enum Mode {
/**
* CL_DEVICE_TYPE_CPU
*/
OUT_OF_ORDER_EXEC_MODE(CL.CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE),
/**
* CL_DEVICE_TYPE_GPU
*/
PROFILING_MODE(CL.CL_QUEUE_PROFILING_ENABLE);
/**
* Value of wrapped OpenCL device type.
*/
public final int CL_QUEUE_MODE;
private Mode(int CL_VALUE) {
this.CL_QUEUE_MODE = CL_VALUE;
}
public static Mode valueOf(int queueMode) {
switch(queueMode) {
case(CL.CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE):
return OUT_OF_ORDER_EXEC_MODE;
case(CL.CL_QUEUE_PROFILING_ENABLE):
return PROFILING_MODE;
}
return null;
}
public static EnumSet<Mode> valuesOf(int bitfield) {
List<Mode> matching = new ArrayList<Mode>();
Mode[] values = Mode.values();
for (Mode value : values) {
if((value.CL_QUEUE_MODE & bitfield) != 0)
matching.add(value);
}
if(matching.isEmpty())
return EnumSet.noneOf(Mode.class);
else
return EnumSet.copyOf(matching);
}
}
}
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