2018-04-24 11:15:20 +02:00
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/*
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* Copyright 2017 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.channel.epoll;
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2018-10-12 05:02:41 +02:00
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import io.netty.channel.DefaultSelectStrategyFactory;
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2018-04-24 11:15:20 +02:00
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import io.netty.channel.EventLoop;
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import io.netty.channel.EventLoopGroup;
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2019-10-08 10:00:59 +02:00
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import io.netty.channel.IoHandlerFactory;
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import io.netty.channel.ServerChannel;
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2019-01-23 08:32:05 +01:00
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import io.netty.channel.SingleThreadEventLoop;
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2019-07-17 12:23:08 +02:00
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import io.netty.channel.unix.FileDescriptor;
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2019-10-08 10:00:59 +02:00
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import io.netty.testsuite.transport.AbstractSingleThreadEventLoopTest;
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2018-10-12 05:02:41 +02:00
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import io.netty.util.concurrent.DefaultThreadFactory;
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2018-04-24 11:15:20 +02:00
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import io.netty.util.concurrent.Future;
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2018-10-12 05:02:41 +02:00
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import io.netty.util.concurrent.ThreadPerTaskExecutor;
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2018-04-24 11:15:20 +02:00
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import org.junit.Test;
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2019-07-17 12:23:08 +02:00
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import java.io.IOException;
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2018-04-24 11:15:20 +02:00
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import java.util.concurrent.TimeUnit;
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2019-07-17 12:23:08 +02:00
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import java.util.concurrent.atomic.AtomicInteger;
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2018-10-12 05:02:41 +02:00
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import java.util.concurrent.atomic.AtomicReference;
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2018-04-24 11:15:20 +02:00
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2019-07-17 12:23:08 +02:00
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import static org.junit.Assert.assertEquals;
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2018-04-24 11:15:20 +02:00
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import static org.junit.Assert.assertFalse;
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2018-10-12 05:02:41 +02:00
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import static org.junit.Assert.assertNull;
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2018-04-24 11:15:20 +02:00
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import static org.junit.Assert.assertTrue;
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2019-10-08 10:00:59 +02:00
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public class EpollEventLoopTest extends AbstractSingleThreadEventLoopTest {
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2018-04-24 11:15:20 +02:00
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@Test
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2018-05-30 11:11:42 +02:00
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public void testScheduleBigDelayNotOverflow() {
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2019-01-22 16:07:26 +01:00
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final AtomicReference<Throwable> capture = new AtomicReference<>();
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2018-04-24 11:15:20 +02:00
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2019-01-23 08:32:05 +01:00
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final EventLoopGroup group = new SingleThreadEventLoop(
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new ThreadPerTaskExecutor(new DefaultThreadFactory(getClass())),
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new EpollHandler(0, DefaultSelectStrategyFactory.INSTANCE.newSelectStrategy()) {
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@Override
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void handleLoopException(Throwable t) {
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capture.set(t);
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super.handleLoopException(t);
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}
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});
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2018-04-24 11:15:20 +02:00
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2018-10-12 05:02:41 +02:00
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try {
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final EventLoop eventLoop = group.next();
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2019-01-29 14:06:05 +01:00
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Future<?> future = eventLoop.schedule(() -> {
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// NOOP
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2018-10-12 05:02:41 +02:00
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}, Long.MAX_VALUE, TimeUnit.MILLISECONDS);
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assertFalse(future.awaitUninterruptibly(1000));
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assertTrue(future.cancel(true));
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assertNull(capture.get());
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} finally {
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group.shutdownGracefully();
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}
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2018-04-24 11:15:20 +02:00
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}
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2019-07-17 12:23:08 +02:00
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@Test
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public void testEventFDETSemantics() throws Throwable {
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final FileDescriptor epoll = Native.newEpollCreate();
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final FileDescriptor eventFd = Native.newEventFd();
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final FileDescriptor timerFd = Native.newTimerFd();
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final EpollEventArray array = new EpollEventArray(1024);
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try {
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Native.epollCtlAdd(epoll.intValue(), eventFd.intValue(), Native.EPOLLIN | Native.EPOLLET);
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final AtomicReference<Throwable> causeRef = new AtomicReference<>();
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final AtomicInteger integer = new AtomicInteger();
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final Thread t = new Thread(() -> {
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try {
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for (int i = 0; i < 2; i++) {
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int ready = Native.epollWait(epoll, array, timerFd, -1, -1);
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assertEquals(1, ready);
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assertEquals(eventFd.intValue(), array.fd(0));
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integer.incrementAndGet();
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}
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} catch (IOException e) {
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causeRef.set(e);
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}
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});
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t.start();
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Native.eventFdWrite(eventFd.intValue(), 1);
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// Spin until we was the wakeup.
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while (integer.get() != 1) {
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Thread.sleep(10);
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}
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// Sleep for a short moment to ensure there is not other wakeup.
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Thread.sleep(1000);
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assertEquals(1, integer.get());
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Native.eventFdWrite(eventFd.intValue(), 1);
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t.join();
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Throwable cause = causeRef.get();
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if (cause != null) {
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throw cause;
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}
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assertEquals(2, integer.get());
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} finally {
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array.free();
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epoll.close();
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eventFd.close();
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timerFd.close();
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}
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}
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2019-10-08 10:00:59 +02:00
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@Override
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protected IoHandlerFactory newIoHandlerFactory() {
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return EpollHandler.newFactory();
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}
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@Override
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protected Class<? extends ServerChannel> serverChannelClass() {
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return EpollServerSocketChannel.class;
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}
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2018-04-24 11:15:20 +02:00
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}
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