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/*
* Copyright (c) 2011 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 Wednesday, May 25 2011 00:57
*/
package com.jogamp.opencl.impl;
import java.nio.IntBuffer;
import com.jogamp.common.nio.PointerBuffer;
import com.jogamp.opencl.llb.CL;
import com.jogamp.opencl.spi.CLAccessorFactory;
import com.jogamp.opencl.spi.CLInfoAccessor;
import com.jogamp.opencl.spi.CLPlatformInfoAccessor;
import java.nio.Buffer;
import static com.jogamp.opencl.CLException.*;
/**
*
* @author Michael Bien, et al.
*/
public class CLTLAccessorFactory implements CLAccessorFactory {
@Override
public CLInfoAccessor createDeviceInfoAccessor(final CL cl, final long id) {
return new CLDeviceInfoAccessor(cl, id);
}
@Override
public CLPlatformInfoAccessor createPlatformInfoAccessor(final CL cl, final long id) {
return new CLTLPlatformInfoAccessor(cl, id);
}
private final static class CLDeviceInfoAccessor extends CLTLInfoAccessor {
private final CL cl;
private final long ID;
private CLDeviceInfoAccessor(final CL cl, final long id) {
this.cl = cl;
this.ID = id;
}
@Override
public int getInfo(final int name, final long valueSize, final Buffer value, final PointerBuffer valueSizeRet) {
return cl.clGetDeviceInfo(ID, name, valueSize, value, valueSizeRet);
}
}
private final static class CLTLPlatformInfoAccessor extends CLTLInfoAccessor implements CLPlatformInfoAccessor {
private final long ID;
private final CL cl;
private CLTLPlatformInfoAccessor(final CL cl, final long id) {
this.ID = id;
this.cl = cl;
}
@Override
public int getInfo(final int name, final long valueSize, final Buffer value, final PointerBuffer valueSizeRet) {
return cl.clGetPlatformInfo(ID, name, valueSize, value, valueSizeRet);
}
@Override
public long[] getDeviceIDs(final long type) {
final IntBuffer buffer = getBB(4).asIntBuffer();
int ret = cl.clGetDeviceIDs(ID, type, 0, null, buffer);
final int count = buffer.get(0);
// return an empty buffer rather than throwing an exception
if(ret == CL.CL_DEVICE_NOT_FOUND || count == 0) {
return new long[0];
}else{
checkForError(ret, "error while enumerating devices");
final PointerBuffer deviceIDs = PointerBuffer.wrap(getBB(count*PointerBuffer.ELEMENT_SIZE));
ret = cl.clGetDeviceIDs(ID, type, count, deviceIDs, null);
checkForError(ret, "error while enumerating devices");
final long[] ids = new long[count];
for (int i = 0; i < ids.length; i++) {
ids[i] = deviceIDs.get(i);
}
return ids;
}
}
}
}
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