/**
* 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.mpmc;
import org.junit.Test;
import z.channel.MPMCQueue;
import z.znr.Affinity;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.IntStream;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
import static z.util.Throwables.uncheck;
/**
* spawn 7 consumer threads/7 producer threads
*/
public class MPMCQueueStressTest3 {
private static final int RUNS = 20_000_000;
private static final int TOTAL_RUNS = RUNS*7;
// private MPMCQueue loop = new MPMCQueue(8);
private MPMCQueue loop = new MPMCQueue(1024*128);
private AtomicInteger counter;
@Test
public void testMPMCHyperLoop() {
Affinity.bindTo(
Affinity.Topology.socket(0).physicalCore(0).virtualCore(0));
for (int i = 0; i < 5; i++) {
System.gc();//?
counter = new AtomicInteger();
runStress("#" + i);
}
}
private void runStress(String label) {
System.out.println("=====in Round "+label);
int numRunnings0 = numOfRunningThreads();
CountDownLatch startLatch = new CountDownLatch(1);
CountDownLatch endLatch = new CountDownLatch(7*2);
long[] values = new long[RUNS];
ThreadLocalRandom rnd = ThreadLocalRandom.current();
IntStream.range(0, RUNS).forEach( i->
values[i]=rnd.nextLong(0,Long.MAX_VALUE)
);
System.out.println("start stress...");
//
// IntStream.range(0,7).forEach(i->{
// });
spawnConsumer(0,1,loop,values,startLatch,endLatch).start();
spawnProducer(0,1,loop,values,startLatch,endLatch).start();
spawnConsumer(1,0,loop,values,startLatch,endLatch).start();
spawnProducer(1,0,loop,values,startLatch,endLatch).start();
spawnConsumer(1,1,loop,values,startLatch,endLatch).start();
spawnProducer(1,1,loop,values,startLatch,endLatch).start();
spawnConsumer(2,0,loop,values,startLatch,endLatch).start();
spawnProducer(2, 0, loop, values, startLatch, endLatch).start();
spawnConsumer(2,1,loop,values,startLatch,endLatch).start();
spawnProducer(2, 1, loop, values, startLatch, endLatch).start();
spawnConsumer(3,0,loop,values,startLatch,endLatch).start();
spawnProducer(3, 0, loop, values, startLatch, endLatch).start();
spawnConsumer(3,1,loop,values,startLatch,endLatch).start();
spawnProducer(3, 1, loop, values, startLatch, endLatch).start();
uncheck(() ->
Thread.sleep(1000));
startLatch.countDown();
long s = System.nanoTime();
uncheck(() ->
endLatch.await());
long time = System.nanoTime()-s;
System.out.println(counter.get());
System.out.printf("MPMCQueueStressTest2 " +
"done with costed time: %,d\n",time);
//for safety, we wait 1s for the termination of all consumers .
uncheck(()->Thread.sleep(1000L));
assertThat(numOfRunningThreads(), is(numRunnings0));
}
private static final int numOfRunningThreads() {
return (int)
Thread.getAllStackTraces().keySet().stream()
.filter(t -> t.getState() == Thread.State.RUNNABLE)
.count();
}
private Thread spawnConsumer(
int physicalCoreId,
int virtualCoreId,
MPMCQueue loop,
long[] expectedValues,
CountDownLatch startLatch,
CountDownLatch endLatch) {
return
new Thread(() -> {
Affinity.bindTo(
Affinity.Topology.
socket(0).
physicalCore(physicalCoreId).
virtualCore(virtualCoreId));
uncheck(() -> startLatch.await());
long v= MPMCQueue.NULL;
while ((counter.get()<TOTAL_RUNS)) {
while ( MPMCQueue.NULL ==(v=loop.poll()) &&
(counter.get()<TOTAL_RUNS) ) {
// Thread.yield();
}
if (v!= MPMCQueue.NULL) {
counter.incrementAndGet();
}
}
// System.out.println(counter.get());
endLatch.countDown();
});
}
private Thread spawnProducer(
int physicalCoreId,
int virtualCoreId,
MPMCQueue loop,
long[] values,
CountDownLatch startLatch,
CountDownLatch endLatch) {
return
new Thread(() -> {
Affinity.bindTo(
Affinity.Topology.
socket(0).
physicalCore(physicalCoreId).
virtualCore(virtualCoreId));
uncheck(() -> startLatch.await());
for (int i=0;i<RUNS;i++) {
// System.out.println(i);
while (!loop.offer(values[i])){
// Thread.yield();
}
}
// System.out.println(counter.get());
endLatch.countDown();
});
}
}