1 /* 2 * Copyright (c) 2007, 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 24 /* 25 * @test 26 * @key stress gc 27 * 28 * @summary converted from VM Testbase gc/vector/SimpleGC. 29 * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent, monitoring] 30 * 31 * @library /vmTestbase 32 * /test/lib 33 * @run driver jdk.test.lib.FileInstaller . . 34 * @run main/othervm gc.vector.SimpleGC.SimpleGC -ms high 35 */ 36 37 package gc.vector.SimpleGC; 38 39 import nsk.share.gc.GC; 40 import nsk.share.gc.GCTestBase; 41 import nsk.share.gc.gp.GarbageProducer; 42 import nsk.share.gc.gp.GarbageProducerAware; 43 import nsk.share.gc.gp.GarbageUtils; 44 import nsk.share.gc.gp.MemoryStrategy; 45 import nsk.share.gc.gp.MemoryStrategyAware; 46 import nsk.share.runner.RunParams; 47 import nsk.share.test.Stresser; 48 49 /** 50 * Test that fills out a certain amount of memory with objects of a given type. 51 * The test accepts MemoryStrategy, type of objects and stress options 52 * as command line args. 53 */ 54 public class SimpleGC extends GCTestBase implements GarbageProducerAware, MemoryStrategyAware { 55 56 private GarbageProducer garbageProducer; 57 private MemoryStrategy memoryStrategy; 58 59 /** 60 * Garbage link. 61 * The field is static to prevent possible compiler optimizations. 62 */ 63 public static Object[] array; 64 65 @Override 66 public void run() { 67 68 long memoryAmount = runParams.getTestMemory(); 69 long size = GarbageUtils.getArraySize(memoryAmount, memoryStrategy); 70 int length = GarbageUtils.getArrayCount(memoryAmount, memoryStrategy); 71 Object[] garbage = new Object[length]; 72 array = garbage; 73 log.info("Memory to fill out: " + memoryAmount); 74 log.info("Array lenght: " + garbage.length); 75 log.info("Object size: " + size); 76 log.info("Garbage producer: " + garbageProducer.getClass().getCanonicalName()); 77 log.info("Memory Strategy: " + memoryStrategy); 78 Stresser stresser = new Stresser(runParams.getStressOptions()); 79 stresser.start(10 * garbage.length); 80 81 int iteration = 0; 82 try { 83 while (stresser.iteration()) { 84 for (int i = 0; i < garbage.length && stresser.continueExecution(); ++i) { 85 garbage[i] = garbageProducer.create(size); 86 } 87 for (int i = 0; i < garbage.length; ++i) { 88 garbage[i] = null; 89 } 90 iteration++; 91 if (iteration % 1000 == 0) { 92 log.info(" iteration # " + iteration); 93 } 94 } 95 } catch (OutOfMemoryError oom) { 96 // normally that should never be thrown 97 log.info("OutOfMemory after " + iteration + " iterations"); 98 throw oom; 99 } finally { 100 stresser.finish(); 101 } 102 log.info("Success. Total iterations: " + iteration); 103 } 104 105 @Override 106 public final void setGarbageProducer(GarbageProducer garbageProducer) { 107 this.garbageProducer = garbageProducer; 108 } 109 110 @Override 111 public final void setMemoryStrategy(MemoryStrategy memoryStrategy) { 112 this.memoryStrategy = memoryStrategy; 113 } 114 115 public static void main(String[] args) { 116 RunParams.getInstance().setRunMemDiagThread(true); 117 GC.runTest(new SimpleGC(), args); 118 } 119 }