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/*
* Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution 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.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*/
package jogamp.common.jvm;
import java.nio.ByteBuffer;
import jogamp.common.Debug;
import com.jogamp.common.nio.Buffers;
/**
* Currently this tool works around the Hotspot race condition bugs:
<PRE>
4395095 JNI access to java.nio DirectBuffer constructor/accessor
6852404 Race condition in JNI Direct Buffer access and creation routines
</PRE>
*
* Make sure to initialize this class as soon as possible,
* before doing any multithreading work.
*
*/
public class JVMUtil {
private static final boolean DEBUG = Debug.debug("JVMUtil");
static {
ByteBuffer buffer = Buffers.newDirectByteBuffer(64);
if( ! initialize(buffer) ) {
throw new RuntimeException("Failed to initialize the JVMUtil "+Thread.currentThread().getName());
}
if(DEBUG) {
Exception e = new Exception("JVMUtil.initSingleton() .. initialized "+Thread.currentThread().getName());
e.printStackTrace();
}
}
/** Kicks of one-time static initialization of this class. See {@link JVMUtil}. */
public static void initSingleton() { }
private JVMUtil() {}
private static native boolean initialize(java.nio.ByteBuffer buffer);
}
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