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/*
* Copyright (c) 2003, 2010, 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 4854354
* @summary Test vector write faster than can be read
* @library ..
*/
import java.io.*;
import java.net.*;
import java.nio.*;
import java.nio.channels.*;
import java.util.*;
public class Write {
static Random generator = new Random();
static int testSize = 15;
public static void main(String[] args) throws Exception {
WriteServer sv = new WriteServer();
sv.start();
bufferTest(sv.port());
if (sv.finish(8000) == 0)
throw new Exception("Failed" );
}
static void bufferTest(int port) throws Exception {
ByteBuffer[] bufs = new ByteBuffer[testSize];
for(int i=0; i<testSize; i++) {
String source =
"a muchmuchmuchmuchmuchmuchmuchmuch larger buffer numbered " +
i;
bufs[i] = ByteBuffer.allocateDirect(source.length());
}
// Get a connection to the server
InetAddress lh = InetAddress.getLocalHost();
InetSocketAddress isa = new InetSocketAddress(lh, port);
SocketChannel sc = SocketChannel.open();
sc.connect(isa);
sc.configureBlocking(false);
// Try to overflow the socket buffer
long total = 0;
for (int i=0; i<100; i++) {
long bytesWritten = sc.write(bufs);
if (bytesWritten > 0)
total += bytesWritten;
for(int j=0; j<testSize; j++)
bufs[j].rewind();
}
// Clean up
sc.close();
}
}
class WriteServer extends TestThread {
static Random generator = new Random();
final ServerSocketChannel ssc;
WriteServer() throws IOException {
super("WriteServer");
this.ssc = ServerSocketChannel.open().bind(new InetSocketAddress(0));
}
int port() {
return ssc.socket().getLocalPort();
}
void go() throws Exception {
bufferTest();
}
void bufferTest() throws Exception {
ByteBuffer buf = ByteBuffer.allocateDirect(5);
// Get a connection from client
SocketChannel sc = null;
try {
ssc.configureBlocking(false);
for (;;) {
sc = ssc.accept();
if (sc != null)
break;
Thread.sleep(50);
}
// I'm a slow reader...
Thread.sleep(3000);
} finally {
// Clean up
ssc.close();
if (sc != null)
sc.close();
}
}
}
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