8208280: java/nio/channels/Selector/RegisterDuringSelect.java fails with "key not removed from key set"
Reviewed-by: alanb
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/* @test
* @bug 4513011
* @summary Registering and cancelling same fd many times
* @library .. /test/lib
* @build jdk.test.lib.Utils TestServers
* @run main Alias
*/
import java.net.*;
import java.nio.*;
import java.nio.channels.*;
import java.nio.channels.spi.SelectorProvider;
import java.util.*;
public class Alias {
static int success = 0;
static int LIMIT = 20; // Hangs after just 1 if problem is present
public static void main(String[] args) throws Exception {
try (TestServers.DayTimeServer daytimeServer
= TestServers.DayTimeServer.startNewServer(100)) {
test1(daytimeServer);
}
}
static void test1(TestServers.DayTimeServer daytimeServer) throws Exception {
Selector selector = SelectorProvider.provider().openSelector();
InetAddress myAddress = daytimeServer.getAddress();
InetSocketAddress isa
= new InetSocketAddress(myAddress,
daytimeServer.getPort());
for (int j=0; j<LIMIT; j++) {
SocketChannel sc = SocketChannel.open();
sc.configureBlocking(false);
boolean result = sc.connect(isa);
// On some platforms - given that we're using a local server,
// we may not enter into the if () { } statement below...
if (!result) {
SelectionKey key = sc.register(selector,
SelectionKey.OP_CONNECT);
while (!result) {
int keysAdded = selector.select(100);
if (keysAdded > 0) {
Set readyKeys = selector.selectedKeys();
Iterator i = readyKeys.iterator();
while (i.hasNext()) {
SelectionKey sk = (SelectionKey)i.next();
SocketChannel nextReady =
(SocketChannel)sk.channel();
result = nextReady.finishConnect();
}
}
}
key.cancel();
}
read(sc);
}
selector.close();
}
static void read(SocketChannel sc) throws Exception {
ByteBuffer bb = ByteBuffer.allocateDirect(100);
int n = 0;
while (n == 0) // Note this is not a rigorous check for done reading
n = sc.read(bb);
//bb.position(bb.position() - 2);
//bb.flip();
//CharBuffer cb = Charset.forName("US-ASCII").newDecoder().decode(bb);
//System.out.println("Received: \"" + cb + "\"");
sc.close();
success++;
}
}