/*
* Copyright (c) 2008, 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.fs;
/**
* Container for device/inode to uniquely identify file.
*/
class UnixFileKey {
private final long st_dev;
private final long st_ino;
UnixFileKey(long st_dev, long st_ino) {
this.st_dev = st_dev;
this.st_ino = st_ino;
}
@Override
public int hashCode() {
return (int)(st_dev ^ (st_dev >>> 32)) +
(int)(st_ino ^ (st_ino >>> 32));
}
@Override
public boolean equals(Object obj) {
if (obj == this)
return true;
if (!(obj instanceof UnixFileKey))
return false;
UnixFileKey other = (UnixFileKey)obj;
return (this.st_dev == other.st_dev) && (this.st_ino == other.st_ino);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("(dev=")
.append(Long.toHexString(st_dev))
.append(",ino=")
.append(st_ino)
.append(')');
return sb.toString();
}
}