/**
* Copyright 2013, Landz and its contributors. All rights reserved.
*
* 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 z.channel.stress;
import org.junit.Test;
import z.channel.GenericHyperLoop;
import z.channel.ReceivePort;
import z.znr.Affinity;
import z.znr.Affinity.Topology;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ThreadLocalRandom;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
public class ThroughputStressTestForGenericHL {
private static final int RUNS = 2_000_000;//100_000_000;
private GenericHyperLoop loop = new GenericHyperLoop(8);
private ReceivePort<String> out = loop.createReceivePort();
@Test
public void testHyperLoop() {
for (int i = 0; i < 5; i++) {
runHyperLoopStress("#"+i);
}
}
private void runHyperLoopStress(String label) {
System.out.println("=====in Round "+label);
int numRunnings0 = numOfRunningThreads();
CountDownLatch endLatch = new CountDownLatch(1);
String[] values = new String[RUNS];
ThreadLocalRandom rnd = ThreadLocalRandom.current();
for (int i = 0; i < RUNS ; i++) {
values[i]=String.valueOf(rnd.nextLong());
}
System.out.println("start stress...");
Thread t = new Thread(() -> {
Affinity.bindTo(Topology.socket(0).physicalCore(3).virtualCore(0));
String v;
for (int i=0;i<RUNS;i++) {
while(out.notReceivable()){}
v = out.tryReceive();
// if (!v.equals(values[i])) {
// //DEBUG
// for (int j = 0; j < values.length; j++) {
// if (v.equals(j))
// System.out.println("i:"+i+",j:"+j);
// }
// System.out.println("======#####=====");
// }
assertThat("happend when i=" + i,
v, is(values[i]));
}
endLatch.countDown();
});
t.setDaemon(true);
t.start();
try {
long s = System.nanoTime();
//XXX: producer is in main thread
for (int i=0;i<RUNS;i++) {
while (!loop.trySend(values[i])){}
}
endLatch.await();
long time = System.nanoTime()-s;
System.out.printf("done with costed time: %,d\n",time);
assertThat(numOfRunningThreads(), is(numRunnings0));
}catch (Exception e){e.printStackTrace();}
}
private static final int numOfRunningThreads() {
return (int)
Thread.getAllStackTraces().keySet().stream()
.filter(t -> t.getState() == Thread.State.RUNNABLE)
.count();
}
}