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/*
* Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6277663
* @summary Test TPE extensibility framework
* @library /lib/testlibrary/
* @author Martin Buchholz
*/
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;
import java.util.concurrent.RunnableFuture;
import java.util.concurrent.RunnableScheduledFuture;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.BooleanSupplier;
import jdk.testlibrary.Utils;
public class Custom {
static final long LONG_DELAY_MS = Utils.adjustTimeout(10_000);
static volatile int passed = 0, failed = 0;
static void pass() { passed++; }
static void fail() { failed++; Thread.dumpStack(); }
static void unexpected(Throwable t) { failed++; t.printStackTrace(); }
static void check(boolean cond) { if (cond) pass(); else fail(); }
static void equal(Object x, Object y) {
if (x == null ? y == null : x.equals(y)) pass();
else {System.out.println(x + " not equal to " + y); fail(); }}
private static class CustomTask<V> extends FutureTask<V> {
public static final AtomicInteger births = new AtomicInteger(0);
CustomTask(Callable<V> c) { super(c); births.getAndIncrement(); }
CustomTask(Runnable r, V v) { super(r, v); births.getAndIncrement(); }
}
private static class CustomTPE extends ThreadPoolExecutor {
CustomTPE() {
super(threadCount, threadCount,
30, TimeUnit.MILLISECONDS,
new ArrayBlockingQueue<Runnable>(2*threadCount));
}
protected <V> RunnableFuture<V> newTaskFor(Callable<V> c) {
return new CustomTask<V>(c);
}
protected <V> RunnableFuture<V> newTaskFor(Runnable r, V v) {
return new CustomTask<V>(r, v);
}
}
private static class CustomSTPE extends ScheduledThreadPoolExecutor {
public static final AtomicInteger decorations = new AtomicInteger(0);
CustomSTPE() {
super(threadCount);
}
protected <V> RunnableScheduledFuture<V> decorateTask(
Runnable r, RunnableScheduledFuture<V> task) {
decorations.getAndIncrement();
return task;
}
protected <V> RunnableScheduledFuture<V> decorateTask(
Callable<V> c, RunnableScheduledFuture<V> task) {
decorations.getAndIncrement();
return task;
}
}
static int countExecutorThreads() {
Thread[] threads = new Thread[Thread.activeCount()+100];
Thread.enumerate(threads);
int count = 0;
for (Thread t : threads)
if (t != null && t.getName().matches("pool-[0-9]+-thread-[0-9]+"))
count++;
return count;
}
private static final int threadCount = 10;
static long millisElapsedSince(long startTime) {
return (System.nanoTime() - startTime) / (1000L * 1000L);
}
static void spinWaitUntil(BooleanSupplier predicate, long timeoutMillis) {
long startTime = -1L;
while (!predicate.getAsBoolean()) {
if (startTime == -1L)
startTime = System.nanoTime();
else if (millisElapsedSince(startTime) > timeoutMillis)
throw new AssertionError(
String.format("timed out after %s ms", timeoutMillis));
Thread.yield();
}
}
public static void main(String[] args) throws Throwable {
CustomTPE tpe = new CustomTPE();
equal(tpe.getCorePoolSize(), threadCount);
equal(countExecutorThreads(), 0);
for (int i = 0; i < threadCount; i++)
tpe.submit(new Runnable() { public void run() {}});
equal(countExecutorThreads(), threadCount);
equal(CustomTask.births.get(), threadCount);
tpe.shutdown();
tpe.awaitTermination(LONG_DELAY_MS, MILLISECONDS);
spinWaitUntil(() -> countExecutorThreads() == 0, LONG_DELAY_MS);
CustomSTPE stpe = new CustomSTPE();
for (int i = 0; i < threadCount; i++)
stpe.submit(new Runnable() { public void run() {}});
equal(CustomSTPE.decorations.get(), threadCount);
equal(countExecutorThreads(), threadCount);
stpe.shutdown();
stpe.awaitTermination(LONG_DELAY_MS, MILLISECONDS);
spinWaitUntil(() -> countExecutorThreads() == 0, LONG_DELAY_MS);
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
if (failed > 0) throw new Exception("Some tests failed");
}
}
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