| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package libcore.java.nio.channels; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.net.ServerSocket; |
| import java.nio.channels.NoConnectionPendingException; |
| import java.nio.channels.SelectionKey; |
| import java.nio.channels.Selector; |
| import java.nio.channels.ServerSocketChannel; |
| import java.nio.channels.SocketChannel; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| import libcore.io.Libcore; |
| import libcore.io.OsConstants; |
| import junit.framework.TestCase; |
| import tests.net.StuckServer; |
| |
| public class SelectorTest extends TestCase { |
| public void testNonBlockingConnect_immediate() throws Exception { |
| // Test the case where we [probably] connect immediately. |
| Selector selector = Selector.open(); |
| ServerSocketChannel ssc = ServerSocketChannel.open(); |
| try { |
| ssc.configureBlocking(false); |
| ssc.socket().bind(null); |
| |
| SocketChannel sc = SocketChannel.open(); |
| sc.configureBlocking(false); |
| sc.connect(ssc.socket().getLocalSocketAddress()); |
| SelectionKey key = sc.register(selector, SelectionKey.OP_CONNECT); |
| assertEquals(1, selector.select()); |
| assertEquals(SelectionKey.OP_CONNECT, key.readyOps()); |
| sc.finishConnect(); |
| } finally { |
| selector.close(); |
| ssc.close(); |
| } |
| } |
| |
| public void testNonBlockingConnect_slow() throws Exception { |
| // Test the case where we have to wait for the connection. |
| Selector selector = Selector.open(); |
| StuckServer ss = new StuckServer(true); |
| try { |
| SocketChannel sc = SocketChannel.open(); |
| sc.configureBlocking(false); |
| sc.connect(ss.getLocalSocketAddress()); |
| SelectionKey key = sc.register(selector, SelectionKey.OP_CONNECT); |
| assertEquals(1, selector.select()); |
| assertEquals(SelectionKey.OP_CONNECT, key.readyOps()); |
| sc.finishConnect(); |
| } finally { |
| selector.close(); |
| ss.close(); |
| } |
| } |
| |
| // http://b/6453247 |
| // This test won't work on the host until/unless we start using libcorkscrew there. |
| // The runtime itself blocks SIGQUIT, so that doesn't cause poll(2) to EINTR directly. |
| // The EINTR is caused by the way libcorkscrew works. |
| public void testEINTR() throws Exception { |
| Selector selector = Selector.open(); |
| new Thread(new Runnable() { |
| @Override public void run() { |
| try { |
| Thread.sleep(2000); |
| Libcore.os.kill(Libcore.os.getpid(), OsConstants.SIGQUIT); |
| } catch (Exception ex) { |
| fail(); |
| } |
| } |
| }).start(); |
| assertEquals(0, selector.select()); |
| } |
| |
| // http://code.google.com/p/android/issues/detail?id=15388 |
| public void testInterrupted() throws IOException { |
| Selector selector = Selector.open(); |
| try { |
| Thread.currentThread().interrupt(); |
| int count = selector.select(); |
| assertEquals(0, count); |
| } finally { |
| selector.close(); |
| } |
| } |
| |
| public void testManyWakeupCallsTriggerOnlyOneWakeup() throws Exception { |
| final Selector selector = Selector.open(); |
| try { |
| selector.wakeup(); |
| selector.wakeup(); |
| selector.wakeup(); |
| selector.select(); |
| |
| // create a latch that will reach 0 when select returns |
| final CountDownLatch selectReturned = new CountDownLatch(1); |
| Thread thread = new Thread(new Runnable() { |
| @Override public void run() { |
| try { |
| selector.select(); |
| selectReturned.countDown(); |
| } catch (IOException ignored) { |
| } |
| } |
| }); |
| thread.start(); |
| |
| // select doesn't ever return, so await() times out and returns false |
| assertFalse(selectReturned.await(500, TimeUnit.MILLISECONDS)); |
| } finally { |
| selector.close(); |
| } |
| } |
| |
| /** |
| * We previously leaked a file descriptor for each selector instance created. |
| * |
| * http://code.google.com/p/android/issues/detail?id=5993 |
| * http://code.google.com/p/android/issues/detail?id=4825 |
| */ |
| public void testLeakingPipes() throws IOException { |
| for (int i = 0; i < 2000; i++) { |
| Selector selector = Selector.open(); |
| selector.close(); |
| } |
| } |
| } |