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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.
*/
package com.jogamp.opencl;
import com.jogamp.common.nio.Buffers;
import com.jogamp.common.nio.PointerBuffer;
import com.jogamp.opencl.util.CLUtil;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import static com.jogamp.opencl.CLException.*;
/**
* Internal utility for common OpenCL clGetFooInfo calls.
* Threadsafe.
* @author Michael Bien
*/
abstract class CLInfoAccessor {
protected final static ThreadLocal<ByteBuffer> localBB = new ThreadLocal<ByteBuffer>() {
@Override
protected ByteBuffer initialValue() {
return Buffers.newDirectByteBuffer(512);
}
};
protected final static ThreadLocal<PointerBuffer> localPB = new ThreadLocal<PointerBuffer>() {
@Override
protected PointerBuffer initialValue() {
return PointerBuffer.allocateDirect(1);
}
};
public final long getLong(int key) {
ByteBuffer buffer = localBB.get();
int ret = getInfo(key, 8, buffer, null);
checkForError(ret, "error while asking for info value");
return buffer.getLong(0);
}
public final String getString(int key) {
ByteBuffer buffer = localBB.get();
PointerBuffer sizeBuffer = localPB.get();
int ret = getInfo(key, buffer.capacity(), buffer, sizeBuffer);
checkForError(ret, "error while asking for info string");
int clSize = (int)sizeBuffer.get(0);
byte[] array = new byte[clSize-1]; // last char is always null
buffer.get(array).rewind();
return CLUtil.clString2JavaString(array, clSize);
}
protected abstract int getInfo(int name, long valueSize, Buffer value, PointerBuffer valueSizeRet);
}
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