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*
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* 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 .
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*/
/* @test
* @ bug 4755720
* @ summary Test if OP_READ is detected with OP_WRITE in interestOps
*/
import java.net.*;
import java.nio.*;
import java.nio.channels.*;
import java.util.*;
public class OpRead {
static void test() throws Exception {
ServerSocketChannel ssc = null ;
SocketChannel sc = null ;
SocketChannel peer = null ;
try {
ssc = ServerSocketChannel.open().bind(new InetSocketAddress(0 ));
// loopback connection
InetAddress lh = InetAddress.getLocalHost();
sc = SocketChannel.open(new InetSocketAddress(lh, ssc.socket().getLocalPort()));
peer = ssc.accept();
// peer sends message so that "sc" will be readable
int n = peer.write(ByteBuffer.wrap("Hello" .getBytes()));
assert n > 0 ;
sc.configureBlocking(false );
Selector selector = Selector.open();
SelectionKey key = sc.register(selector, SelectionKey.OP_READ |
SelectionKey.OP_WRITE);
boolean done = false ;
int failCount = 0 ;
while (!done) {
int nSelected = selector.select();
if (nSelected > 0 ) {
if (nSelected > 1 )
throw new RuntimeException("More than one channel selected" );
Set<SelectionKey> keys = selector.selectedKeys();
Iterator<SelectionKey> iterator = keys.iterator();
while (iterator.hasNext()) {
key = iterator.next();
iterator.remove();
if (key.isWritable()) {
failCount++;
if (failCount > 10 )
throw new RuntimeException("Test failed" );
Thread .sleep(250 );
}
if (key.isReadable()) {
done = true ;
}
}
}
}
} finally {
if (peer != null ) peer.close();
if (sc != null ) sc.close();
if (ssc != null ) ssc.close();
}
}
public static void main(String[] args) throws Exception {
test();
}
}
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