75 lines
2.3 KiB
Java
75 lines
2.3 KiB
Java
/*
|
|
* Copyright (c) 2005, 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.FileDescriptor;
|
|
import java.io.IOException;
|
|
|
|
/*
|
|
* Represents a key to a specific file on Solaris or Linux
|
|
*/
|
|
public class FileKey {
|
|
|
|
private long st_dev; // ID of device
|
|
private long st_ino; // Inode number
|
|
|
|
private FileKey() { }
|
|
|
|
public static FileKey create(FileDescriptor fd) throws IOException {
|
|
FileKey fk = new FileKey();
|
|
fk.init(fd);
|
|
return fk;
|
|
}
|
|
|
|
public int hashCode() {
|
|
return (int)(st_dev ^ (st_dev >>> 32)) +
|
|
(int)(st_ino ^ (st_ino >>> 32));
|
|
}
|
|
|
|
public boolean equals(Object obj) {
|
|
if (obj == this)
|
|
return true;
|
|
if (!(obj instanceof FileKey))
|
|
return false;
|
|
FileKey other = (FileKey)obj;
|
|
if ((this.st_dev != other.st_dev) ||
|
|
(this.st_ino != other.st_ino)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
private native void init(FileDescriptor fd) throws IOException;
|
|
// Android-removed: Code to load native libraries, doesn't make sense on Android.
|
|
/*
|
|
private static native void initIDs();
|
|
|
|
static {
|
|
initIDs();
|
|
}
|
|
*/
|
|
}
|