119 lines
4.0 KiB
Java
119 lines
4.0 KiB
Java
/*
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* Copyright (c) 2007, 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package nsk.jvmti.ResourceExhausted;
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import java.io.PrintStream;
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import java.util.concurrent.atomic.AtomicInteger;
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import jdk.test.lib.Platform;
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import nsk.share.Consts;
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import nsk.share.test.Stresser;
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import jtreg.SkippedException;
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public class resexhausted001 {
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static {
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System.loadLibrary("resexhausted");
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}
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static final long MAX_ITERATIONS = 2000000L; // Resasonable limit on number of threads
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static Object hanger = new Object();
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static boolean threadsDone;
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static AtomicInteger threadCount = new AtomicInteger();
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public static int run(String args[], PrintStream out) {
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// Check platform here (instead of @requires) as this test is also called from resexhausted004
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if (Platform.isWindows()) {
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throw new SkippedException("Cannot get JVMTI_RESOURCE_EXHAUSTED_THREADS on Windows");
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}
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Stresser stress = new Stresser(args);
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int count = 0;
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threadsDone = false;
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threadCount.set(0);
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Helper.resetExhaustedEvent();
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System.out.println("Creating threads...");
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stress.start(MAX_ITERATIONS);
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try {
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while ( stress.iteration() ) {
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makeThread();
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}
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System.out.println("Can't reproduce OOME due to a limit on iterations/execution time. Test was useless."
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+ " threadCount=" + threadCount.get());
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throw new SkippedException("Test did not get an OutOfMemory error");
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} catch (OutOfMemoryError e) {
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count = threadCount.get();
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} finally {
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synchronized (hanger) {
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threadsDone = true;
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hanger.notifyAll();
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}
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stress.finish();
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}
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while ( threadCount.get() > 2 ) {
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try { Thread.sleep(100); } catch ( InterruptedException swallow ) {}
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}
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System.gc();
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System.out.println("got OOME with threadCount=" + count);
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if (!Helper.checkResult(Helper.JVMTI_RESOURCE_EXHAUSTED_THREADS, "creating " + count + " threads")) {
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return Consts.TEST_FAILED;
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}
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return Consts.TEST_PASSED;
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}
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static Thread makeThread() {
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final Thread thr = new Thread(new Runnable() {
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public void run() {
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threadCount.getAndIncrement();
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synchronized (hanger) {
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while (!threadsDone) {
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try {
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hanger.wait();
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} catch (InterruptedException ignored) {}
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}
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}
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threadCount.getAndDecrement();
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}
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}, "fleece");
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thr.setDaemon(true);
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thr.start();
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return thr;
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}
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public static void main(String[] args) {
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args = nsk.share.jvmti.JVMTITest.commonInit(args);
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int result = run(args, System.out);
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System.out.println(result == Consts.TEST_PASSED ? "TEST PASSED" : "TEST FAILED");
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System.exit(result + Consts.JCK_STATUS_BASE);
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}
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}
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