/* * Copyright (c) 2001, 2009, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package sun.nio.ch;import java.io.IOException;import java.nio.channels.*;public class FileLockImpl extends FileLock{ private volatile boolean valid = true; FileLockImpl(FileChannel channel, long position, long size, boolean shared) { super(channel, position, size, shared); } FileLockImpl(AsynchronousFileChannel channel, long position, long size, boolean shared) { super(channel, position, size, shared); } public boolean isValid() { return valid; } void invalidate() { assert Thread.holdsLock(this); valid = false; } public synchronized void release() throws IOException { Channel ch = acquiredBy(); if (!ch.isOpen()) throw new ClosedChannelException(); if (valid) { if (ch instanceof FileChannelImpl) ((FileChannelImpl)ch).release(this); else if (ch instanceof AsynchronousFileChannelImpl) ((AsynchronousFileChannelImpl)ch).release(this); else throw new AssertionError(); valid = false; } }}
/*
* Copyright (c) 2001, 2009, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.nio.ch;
import java.io.IOException;
import java.nio.channels.*;
public class FileLockImpl
extends FileLock
{
private volatile boolean valid = true;
FileLockImpl(FileChannel channel, long position, long size, boolean shared)
{
super(channel, position, size, shared);
}
FileLockImpl(AsynchronousFileChannel channel, long position, long size, boolean shared)
{
super(channel, position, size, shared);
}
public boolean isValid() {
return valid;
}
void invalidate() {
assert Thread.holdsLock(this);
valid = false;
}
public synchronized void release() throws IOException {
Channel ch = acquiredBy();
if (!ch.isOpen())
throw new ClosedChannelException();
if (valid) {
if (ch instanceof FileChannelImpl)
((FileChannelImpl)ch).release(this);
else if (ch instanceof AsynchronousFileChannelImpl)
((AsynchronousFileChannelImpl)ch).release(this);
else throw new AssertionError();
valid = false;
}
}
}