1 /* 2 * Copyright (c) 2010, 2018, 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 package gc.lock; 24 25 import nsk.share.runner.*; 26 import nsk.share.gc.*; 27 import nsk.share.gc.gp.*; 28 import nsk.share.gc.lock.*; 29 import nsk.share.test.ExecutionController; 30 31 /** 32 * Test how GC is affected by locking. 33 * 34 * A number of threads is started. Each one locks and eats memory. 35 */ 36 public class LockerTest extends ThreadedGCTest implements GarbageProducerAware, GarbageProducer1Aware, LockersAware { 37 38 private GarbageProducer garbageProducer; 39 private GarbageProducer garbageProducer1; 40 private Lockers lockers; 41 private long objectSize = 1000; 42 43 private class Worker implements Runnable { 44 45 byte[] rezerve = new byte[1024 * 1024]; 46 private Locker locker = lockers.createLocker(garbageProducer1.create(objectSize)); 47 48 public Worker() { 49 locker.enable(); 50 } 51 52 public void run() { 53 locker.lock(); 54 GarbageUtils.eatMemory(getExecutionController(), garbageProducer); 55 locker.unlock(); 56 } 57 } 58 59 protected Runnable createRunnable(int i) { 60 return new Worker(); 61 } 62 63 public void setGarbageProducer(GarbageProducer garbageProducer) { 64 this.garbageProducer = garbageProducer; 65 } 66 67 public void setGarbageProducer1(GarbageProducer garbageProducer1) { 68 this.garbageProducer1 = garbageProducer1; 69 } 70 71 public void setLockers(Lockers lockers) { 72 this.lockers = lockers; 73 } 74 75 public static void main(String[] args) { 76 RunParams.getInstance().setRunMemDiagThread(false); 77 GC.runTest(new LockerTest(), args); 78 } 79 }