0N/A/*
2362N/A * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
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0N/A */
0N/A
0N/A/*
0N/A * @test
0N/A * @bug 6458662
0N/A * @summary poolSize might shrink below corePoolSize after timeout
0N/A * @author Martin Buchholz
0N/A */
0N/A
0N/Aimport java.util.*;
0N/Aimport java.util.concurrent.*;
0N/A
0N/Apublic class TimeOutShrink {
0N/A static void checkPoolSizes(ThreadPoolExecutor pool,
0N/A int size, int core, int max) {
0N/A equal(pool.getPoolSize(), size);
0N/A equal(pool.getCorePoolSize(), core);
0N/A equal(pool.getMaximumPoolSize(), max);
0N/A }
0N/A
0N/A private static void realMain(String[] args) throws Throwable {
0N/A final int n = 4;
0N/A final CyclicBarrier barrier = new CyclicBarrier(2*n+1);
0N/A final ThreadPoolExecutor pool
0N/A = new ThreadPoolExecutor(n, 2*n, 1L, TimeUnit.SECONDS,
0N/A new SynchronousQueue<Runnable>());
0N/A final Runnable r = new Runnable() { public void run() {
0N/A try {
0N/A barrier.await();
0N/A barrier.await();
0N/A } catch (Throwable t) { unexpected(t); }}};
0N/A
0N/A for (int i = 0; i < 2*n; i++)
0N/A pool.execute(r);
0N/A barrier.await();
0N/A checkPoolSizes(pool, 2*n, n, 2*n);
0N/A barrier.await();
0N/A while (pool.getPoolSize() > n)
0N/A Thread.sleep(100);
0N/A Thread.sleep(100);
0N/A checkPoolSizes(pool, n, n, 2*n);
0N/A pool.shutdown();
0N/A pool.awaitTermination(Long.MAX_VALUE, TimeUnit.SECONDS);
0N/A }
0N/A
0N/A //--------------------- Infrastructure ---------------------------
0N/A static volatile int passed = 0, failed = 0;
0N/A static void pass() {passed++;}
0N/A static void fail() {failed++; Thread.dumpStack();}
0N/A static void fail(String msg) {System.out.println(msg); fail();}
0N/A static void unexpected(Throwable t) {failed++; t.printStackTrace();}
0N/A static void check(boolean cond) {if (cond) pass(); else fail();}
0N/A static void equal(Object x, Object y) {
0N/A if (x == null ? y == null : x.equals(y)) pass();
0N/A else fail(x + " not equal to " + y);}
0N/A public static void main(String[] args) throws Throwable {
0N/A try {realMain(args);} catch (Throwable t) {unexpected(t);}
0N/A System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
0N/A if (failed > 0) throw new AssertionError("Some tests failed");}
0N/A}