| /* |
| * Copyright (c) 2007, 2018, 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. |
| */ |
| package nsk.jvmti.ResourceExhausted; |
| |
| import java.io.PrintStream; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import nsk.share.Consts; |
| import nsk.share.test.Stresser; |
| |
| public class resexhausted001 { |
| static { |
| System.loadLibrary("resexhausted"); |
| } |
| |
| static final long MAX_ITERATIONS = 2000000L; // Resasonable limit on number of threads |
| |
| static Object hanger = new Object(); |
| static boolean threadsDone; |
| static AtomicInteger threadCount = new AtomicInteger(); |
| |
| public static int run(String args[], PrintStream out) { |
| |
| Stresser stress = new Stresser(args); |
| |
| int count = 0; |
| threadsDone = false; |
| threadCount.set(0); |
| Helper.resetExhaustedEvent(); |
| |
| System.out.println("Creating threads..."); |
| stress.start(MAX_ITERATIONS); |
| try { |
| while ( stress.iteration() ) { |
| makeThread(); |
| } |
| |
| System.out.println("Can't reproduce OOME due to a limit on iterations/execution time. Test was useless."); |
| return Consts.TEST_PASSED; |
| |
| } catch (OutOfMemoryError e) { |
| count = threadCount.get(); |
| threadsDone = true; |
| synchronized (hanger) { |
| hanger.notifyAll(); |
| } |
| } finally { |
| stress.finish(); |
| } |
| |
| while ( threadCount.get() > 2 ) { |
| try { Thread.sleep(100); } catch ( InterruptedException swallow ) {} |
| } |
| |
| System.gc(); |
| if (!Helper.checkResult("creating " + count + " threads")) { |
| return Consts.TEST_FAILED; |
| } |
| |
| return Consts.TEST_PASSED; |
| } |
| |
| static Thread makeThread() { |
| final Thread thr = new Thread(new Runnable() { |
| public void run() { |
| threadCount.getAndIncrement(); |
| while (!threadsDone) { |
| try { |
| synchronized (hanger) { |
| hanger.wait(); |
| } |
| } catch (InterruptedException ignored) {} |
| } |
| threadCount.getAndDecrement(); |
| } |
| }, "fleece"); |
| thr.start(); |
| return thr; |
| } |
| |
| public static void main(String[] args) { |
| args = nsk.share.jvmti.JVMTITest.commonInit(args); |
| |
| int result = run(args, System.out); |
| System.out.println(result == Consts.TEST_PASSED ? "TEST PASSED" : "TEST FAILED"); |
| System.exit(result + Consts.JCK_STATUS_BASE); |
| } |
| } |