/*
* 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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