/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2002-2005
* Sleepycat Software. All rights reserved.
*
* $Id: FileHandle.java,v 1.14 2004/12/22 14:11:33 linda Exp $
*/
package com.sleepycat.je.log;
import java.io.IOException;
import java.io.RandomAccessFile;
import com.sleepycat.je.DatabaseException;
import com.sleepycat.je.dbi.EnvironmentImpl;
import com.sleepycat.je.latch.Latch;
/**
* A FileHandle embodies a File and its accompanying latch.
*/
class FileHandle {
private RandomAccessFile file;
private Latch fileLatch;
private boolean oldHeaderVersion;
FileHandle(RandomAccessFile file,
String fileName,
EnvironmentImpl env,
boolean oldHeaderVersion) {
this.file = file;
this.oldHeaderVersion = oldHeaderVersion;
fileLatch = new Latch(fileName + "_fileHandle", env);
}
RandomAccessFile getFile() {
return file;
}
boolean isOldHeaderVersion() {
return oldHeaderVersion;
}
void latch()
throws DatabaseException {
fileLatch.acquire();
}
boolean latchNoWait()
throws DatabaseException {
return fileLatch.acquireNoWait();
}
void release()
throws DatabaseException {
fileLatch.release();
}
void close()
throws IOException {
if (file != null) {
file.close();
file = null;
}
}
}