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/*
* Copyright (c) 2000, 2001, 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.
*/
/* @test
* @summary Test reading and writing from Pipes
* @key randomness
*/
import java.io.*;
import java.nio.ByteBuffer;
import java.nio.channels.*;
import java.nio.channels.spi.SelectorProvider;
import java.util.Random;
/**
* Testing PipeChannel
*/
public class PipeChannel {
private static Random generator = new Random();
public static void main(String[] args) throws Exception {
for (int x=0; x<100; x++) {
SelectorProvider sp = SelectorProvider.provider();
Pipe p = sp.openPipe();
Pipe.SinkChannel sink = p.sink();
Pipe.SourceChannel source = p.source();
ByteBuffer outgoingdata = ByteBuffer.allocateDirect(10);
byte[] someBytes = new byte[10];
generator.nextBytes(someBytes);
outgoingdata.put(someBytes);
outgoingdata.flip();
int totalWritten = 0;
while (totalWritten < 10) {
int written = sink.write(outgoingdata);
if (written < 0)
throw new Exception("Write failed");
totalWritten += written;
}
ByteBuffer incomingdata = ByteBuffer.allocateDirect(10);
int totalRead = 0;
do {
int bytesRead = source.read(incomingdata);
if (bytesRead > 0)
totalRead += bytesRead;
} while(totalRead < 10);
for(int i=0; i<10; i++)
if (outgoingdata.get(i) != incomingdata.get(i))
throw new Exception("Pipe failed");
sink.close();
source.close();
}
}
}
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