1 /* 2 * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6576792 27 * @summary non-idle worker threads should not be interrupted 28 * @library /test/lib 29 */ 30 31 import static java.util.concurrent.TimeUnit.MILLISECONDS; 32 33 import java.util.concurrent.CountDownLatch; 34 import java.util.concurrent.SynchronousQueue; 35 import java.util.concurrent.ThreadPoolExecutor; 36 import java.util.concurrent.TimeUnit; 37 import jdk.test.lib.Utils; 38 39 public class SelfInterrupt { 40 static final long LONG_DELAY_MS = Utils.adjustTimeout(10_000); 41 42 void test(String[] args) throws Throwable { 43 final int n = 100; 44 final ThreadPoolExecutor pool = 45 new ThreadPoolExecutor(n, n, 1L, TimeUnit.NANOSECONDS, 46 new SynchronousQueue<Runnable>()); 47 final CountDownLatch startingGate = new CountDownLatch(n); 48 final CountDownLatch finishLine = new CountDownLatch(n); 49 equal(pool.getCorePoolSize(), n); 50 equal(pool.getPoolSize(), 0); 51 for (int i = 0; i < n; i++) 52 pool.execute(new Runnable() { public void run() { 53 try { 54 startingGate.countDown(); 55 startingGate.await(); 56 equal(pool.getPoolSize(), n); 57 pool.setCorePoolSize(n); 58 pool.setCorePoolSize(1); 59 check(! Thread.interrupted()); 60 equal(pool.getPoolSize(), n); 61 finishLine.countDown(); 62 finishLine.await(); 63 check(! Thread.interrupted()); 64 } catch (Throwable t) { unexpected(t); }}}); 65 finishLine.await(); 66 pool.shutdown(); 67 check(pool.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); 68 } 69 70 //--------------------- Infrastructure --------------------------- 71 volatile int passed = 0, failed = 0; 72 void pass() {passed++;} 73 void fail() {failed++; Thread.dumpStack();} 74 void fail(String msg) {System.err.println(msg); fail();} 75 void unexpected(Throwable t) {failed++; t.printStackTrace();} 76 void check(boolean cond) {if (cond) pass(); else fail();} 77 void equal(Object x, Object y) { 78 if (x == null ? y == null : x.equals(y)) pass(); 79 else fail(x + " not equal to " + y);} 80 public static void main(String[] args) throws Throwable { 81 new SelfInterrupt().instanceMain(args);} 82 void instanceMain(String[] args) throws Throwable { 83 try {test(args);} catch (Throwable t) {unexpected(t);} 84 System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); 85 if (failed > 0) throw new AssertionError("Some tests failed");} 86 }