/*
* Copyright (c) 2003, 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.
*
* 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.
*/
/*
*
*
* A collection of utility methods used by the SelectorProvider.inheritedChannel
* unit tests.
*/
import java.net.*;
import java.io.*;
import java.nio.channels.*;
import java.lang.reflect.*;
// dependency on Sun implementation
import sun.nio.ch.*;
public class Util {
private static Object get(String className, String fieldName, Object o) throws Exception {
Class cl = Class.forName(className);
Field fld = cl.getDeclaredField(fieldName);
fld.setAccessible(true);
return fld.get(o);
}
private static int fdVal(FileDescriptor fdObj) throws Exception {
Object fdVal = get("java.io.FileDescriptor", "fd", fdObj);
return ((Integer)fdVal).intValue();
}
/*
* Return the file descriptor underlying a given SocketChannel
*/
public static int getFD(SocketChannel sc) {
try {
Object fdObj = get("sun.nio.ch.SocketChannelImpl", "fd", sc);
return fdVal((FileDescriptor)fdObj);
} catch (Exception x) {
x.printStackTrace();
throw new InternalError(x.getMessage());
}
}
/*
* Return the file descriptor underlying a given ServerSocketChannel
*/
public static int getFD(ServerSocketChannel ssc) {
try {
Object fdObj = get("sun.nio.ch.ServerSocketChannelImpl", "fd", ssc);
return fdVal((FileDescriptor)fdObj);
} catch (Exception x) {
x.printStackTrace();
throw new InternalError(x.getMessage());
}
}
/*
* Return the file descriptor underlying a given DatagramChannel
*/
public static int getFD(DatagramChannel dc) {
try {
Object fdObj = get("sun.nio.ch.DatagramChannelImpl", "fd", dc);
return fdVal((FileDescriptor)fdObj);
} catch (Exception x) {
x.printStackTrace();
throw new InternalError(x.getMessage());
}
}
/*
* Return the "java" command and any initial arguments to start the runtime
* in the current configuration.
*
* Typically it will return something like :-
* cmd[0] = "/usr/local/java/solaris-sparc/bin/java"
* or
* cmd[0] = "/usr/local/java/solaris-sparc/bin/sparcv9/java"
* cmd[1] = "-d64"
*/
public static String[] javaCommand() {
String exe = System.getProperty("java.home") + File.separator + "bin" +
File.separator;
String arch = System.getProperty("os.arch");
if (arch.equals("sparcv9")) {
String cmd[] = new String[2];
cmd[0] = exe + "sparcv9/java";
cmd[1] = "-d64";
return cmd;
} else {
String cmd[] = new String[1];
cmd[0] = exe += "java";
return cmd;
}
}
}