/*
* Quasar: lightweight threads and actors for the JVM.
* Copyright (c) 2013-2014, Parallel Universe Software Co. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 3.0
* as published by the Free Software Foundation.
*/
package co.paralleluniverse.strands.channels;
import co.paralleluniverse.strands.channels.*;
import static co.paralleluniverse.common.test.Matchers.*;
import co.paralleluniverse.common.test.TestUtil;
import co.paralleluniverse.common.util.Debug;
import co.paralleluniverse.fibers.Fiber;
import co.paralleluniverse.fibers.FiberForkJoinScheduler;
import co.paralleluniverse.fibers.FiberScheduler;
import co.paralleluniverse.fibers.SuspendExecution;
import co.paralleluniverse.strands.Strand;
import co.paralleluniverse.strands.SuspendableCallable;
import co.paralleluniverse.strands.SuspendableRunnable;
import co.paralleluniverse.strands.channels.Channels.OverflowPolicy;
import static co.paralleluniverse.strands.channels.Selector.*;
import static co.paralleluniverse.strands.channels.TimeoutChannel.*;
import java.util.Arrays;
import java.util.Collection;
import java.util.concurrent.TimeUnit;
import static org.hamcrest.CoreMatchers.*;
import org.junit.After;
import static org.junit.Assert.*;
import static org.junit.Assume.*;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestName;
import org.junit.rules.TestRule;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
/**
*
* @author pron
*/
public class TransferSelectorTest {
@Rule
public TestName name = new TestName();
@Rule
public TestRule watchman = TestUtil.WATCHMAN;
final int mailboxSize;
final OverflowPolicy policy;
final boolean singleConsumer;
final boolean singleProducer;
final FiberScheduler scheduler;
public TransferSelectorTest() {
scheduler = new FiberForkJoinScheduler("test", 4, null, false);
this.mailboxSize = 0;
this.policy = OverflowPolicy.BLOCK;
this.singleConsumer = false;
this.singleProducer = false;
Debug.dumpAfter(20000, "channels.log");
}
private <Message> Channel<Message> newChannel() {
return Channels.newChannel(mailboxSize, policy, singleProducer, singleConsumer);
}
@Before
public void setUp() {
}
@After
public void tearDown() {
}
@Test
public void testSelectReceive1() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
SelectAction<String> sa1 = select(
receive(channel1),
receive(channel2),
receive(channel3));
String m1 = sa1.message();
SelectAction<String> sa2 = select(
receive(channel1),
receive(channel2),
receive(channel3));
String m2 = sa2.message();
assertThat(sa1.index(), is(0));
assertThat(m1, equalTo("hello"));
assertThat(sa2.index(), is(2));
assertThat(m2, equalTo("world!"));
}
}).start();
Thread.sleep(200);
channel1.send("hello");
Thread.sleep(200);
channel3.send("world!");
fib.join();
}
@Test
public void testSelectReceive2() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
Strand.sleep(200);
SelectAction<String> sa1 = select(
receive(channel1),
receive(channel2),
receive(channel3));
Strand.sleep(200);
SelectAction<String> sa2 = select(
receive(channel1),
receive(channel2),
receive(channel3));
if (sa2.index() < sa1.index()) {
SelectAction<String> tmp = sa1;
sa1 = sa2;
sa2 = tmp;
}
String m1 = sa1.message();
String m2 = sa2.message();
assertThat(sa1.index(), is(0));
assertThat(m1, equalTo("hello"));
assertThat(sa2.index(), is(2));
assertThat(m2, equalTo("world!"));
}
}).start();
channel1.send("hello");
channel3.send("world!");
fib.join();
}
@Test
public void testSelectReceiveWithClose1() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
SelectAction<String> sa1 = select(
receive(channel1),
receive(channel2),
receive(channel3));
String m1 = sa1.message();
SelectAction<String> sa2 = select(
receive(channel1),
receive(channel2),
receive(channel3));
String m2 = sa2.message();
assertThat(sa1.index(), is(2));
assertThat(m1, nullValue());
assertThat(m2, nullValue());
}
}).start();
Thread.sleep(200);
channel3.close();
fib.join();
}
@Test
public void testSelectReceiveWithClose2() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
Strand.sleep(200);
SelectAction<String> sa1 = select(
receive(channel1),
receive(channel2),
receive(channel3));
String m1 = sa1.message();
Strand.sleep(200);
SelectAction<String> sa2 = select(
receive(channel1),
receive(channel2),
receive(channel3));
String m2 = sa2.message();
assertThat(sa1.index(), is(2));
assertThat(m1, nullValue());
assertThat(m2, nullValue());
}
}).start();
channel3.close();
fib.join();
}
@Test
public void testSelectReceiveTimeout() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
SelectAction<String> sa1 = select(1, TimeUnit.MILLISECONDS,
receive(channel1),
receive(channel2),
receive(channel3));
SelectAction<String> sa2 = select(300, TimeUnit.MILLISECONDS,
receive(channel1),
receive(channel2),
receive(channel3));
String m2 = sa2.message();
assertThat(sa1, is(nullValue()));
assertThat(sa2.index(), is(0));
assertThat(m2, equalTo("hello"));
}
}).start();
Thread.sleep(200);
channel1.send("hello");
fib.join();
}
@Test
public void testSelectReceiveWithTimeoutChannel() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
SelectAction<String> sa1 = select(
receive(channel1),
receive(channel2),
receive(channel3),
receive(TimeoutChannel.<String>timeout(1, TimeUnit.MILLISECONDS)));
SelectAction<String> sa2 = select(
receive(channel1),
receive(channel2),
receive(channel3),
receive(TimeoutChannel.<String>timeout(300, TimeUnit.MILLISECONDS)));
String m2 = sa2.message();
assertThat(sa1.index(), is(3));
assertThat(sa2.index(), is(0));
assertThat(m2, equalTo("hello"));
}
}).start();
Thread.sleep(200);
channel1.send("hello");
fib.join();
}
@Test
public void testSelectSend1() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
SelectAction<String> sa1 = select(
send(channel1, "hi1"),
send(channel2, "hi2"),
send(channel3, "hi3"));
SelectAction<String> sa2 = select(
send(channel1, "hi1"),
send(channel2, "hi2"),
send(channel3, "hi3"));
assertThat(sa1.index(), is(1));
assertThat(sa2.index(), is(0));
}
}).start();
Thread.sleep(200);
String m1 = channel2.receive();
assertThat(m1, equalTo("hi2"));
Thread.sleep(200);
String m2 = channel1.receive();
assertThat(m2, equalTo("hi1"));
fib.join();
}
@Test
public void testSelectSend2() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
Strand.sleep(200);
SelectAction<String> sa1 = select(
send(channel1, "hi1"),
send(channel2, "hi2"),
send(channel3, "hi3"));
Strand.sleep(200);
SelectAction<String> sa2 = select(
send(channel1, "hi1"),
send(channel2, "hi2"),
send(channel3, "hi3"));
assertThat(sa1.index(), is(1));
assertThat(sa2.index(), is(0));
}
}).start();
String m1 = channel2.receive();
assertThat(m1, equalTo("hi2"));
String m2 = channel1.receive();
assertThat(m2, equalTo("hi1"));
fib.join();
}
@Test
public void testSelectSendWithClose1() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
SelectAction<String> sa1 = select(
send(channel1, "hi1"),
send(channel2, "hi2"),
send(channel3, "hi3"));
SelectAction<String> sa2 = select(
send(channel1, "hi1"),
send(channel2, "hi2"),
send(channel3, "hi3"));
assertThat(sa1.index(), is(1));
assertThat(sa2.index(), is(1));
}
}).start();
Thread.sleep(200);
channel2.close();
fib.join();
}
@Test
public void testSelectSendWithClose2() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
Strand.sleep(200);
SelectAction<String> sa1 = select(
send(channel1, "hi1"),
send(channel2, "hi2"),
send(channel3, "hi3"));
Strand.sleep(200);
SelectAction<String> sa2 = select(
send(channel1, "hi1"),
send(channel2, "hi2"),
send(channel3, "hi3"));
assertThat(sa1.index(), is(1));
assertThat(sa2.index(), is(1));
}
}).start();
channel2.close();
fib.join();
}
@Test
public void testSelectSendTimeout() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
SelectAction<String> sa1 = select(1, TimeUnit.MILLISECONDS,
send(channel1, "hi1"),
send(channel2, "hi2"),
send(channel3, "hi3"));
SelectAction<String> sa2 = select(300, TimeUnit.MILLISECONDS,
send(channel1, "bye1"),
send(channel2, "bye2"),
send(channel3, "bye3"));
assertThat(sa1, is(nullValue()));
assertThat(sa2.index(), is(2));
}
}).start();
Thread.sleep(200);
String m1 = channel3.receive();
assertThat(m1, equalTo("bye3")); // the first send is cancelled
fib.join();
}
@Test
public void testSelectSendWithTimeoutChannel() throws Exception {
final Channel<String> channel1 = newChannel();
final Channel<String> channel2 = newChannel();
final Channel<String> channel3 = newChannel();
Fiber fib = new Fiber("fiber", scheduler, new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
SelectAction<String> sa1 = select(
send(channel1, "hi1"),
send(channel2, "hi2"),
send(channel3, "hi3"),
receive(TimeoutChannel.<String>timeout(1, TimeUnit.MILLISECONDS)));
SelectAction<String> sa2 = select(
send(channel1, "bye1"),
send(channel2, "bye2"),
send(channel3, "bye3"),
receive(TimeoutChannel.<String>timeout(300, TimeUnit.MILLISECONDS)));
assertThat(sa1.index(), is(3));
assertThat(sa2.index(), is(2));
}
}).start();
Thread.sleep(200);
String m1 = channel3.receive();
assertThat(m1, equalTo("bye3")); // the first send is cancelled
fib.join();
}
}