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/*
* Copyright (c) 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
* @bug 4526754
* @summary Test Pipe scattering reads
* @key randomness
*/
import java.nio.channels.*;
import java.nio.*;
import java.util.Random;
public class ScatteringRead {
private static Random generator = new Random();
public static void main(String[] args) throws Exception {
scScatter();
}
private static void scScatter() throws Exception {
Pipe p = Pipe.open();
Pipe.SinkChannel sink = p.sink();
Pipe.SourceChannel source = p.source();
sink.configureBlocking(false);
ByteBuffer outgoingdata = ByteBuffer.allocateDirect(30);
byte[] someBytes = new byte[30];
generator.nextBytes(someBytes);
outgoingdata.put(someBytes);
outgoingdata.flip();
int totalWritten = 0;
while (totalWritten < 30) {
int written = sink.write(outgoingdata);
if (written < 0)
throw new Exception("Write failed");
totalWritten += written;
}
ByteBuffer[] bufs = new ByteBuffer[3];
for(int i=0; i<3; i++)
bufs[i] = ByteBuffer.allocateDirect(10);
long numBytesRead = source.read(bufs);
if (numBytesRead < 30)
throw new Exception("Pipe test failed");
sink.close();
source.close();
}
}
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