1 /* 2 * Copyright (c) 2013, 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 CheckAllocateAndSystemGC 26 * @summary CMS: assert(used() == used_after_gc && used_after_gc <= capacity()) failed: used: 0 used_after_gc: 292080 capacity: 1431699456 27 * @bug 8013032 28 * @key gc 29 * @key regression 30 * @library /testlibrary 31 * @run main/othervm CheckAllocateAndSystemGC 32 * @author jon.masamitsu@oracle.com 33 */ 34 35 import com.oracle.java.testlibrary.*; 36 37 public class CheckAllocateAndSystemGC { 38 public static void main(String args[]) throws Exception { 39 40 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 41 "-showversion", 42 "-XX:+UseConcMarkSweepGC", 43 "-Xmn4m", 44 "-XX:MaxTenuringThreshold=1", 45 "-XX:-UseCMSCompactAtFullCollection", 46 "CheckAllocateAndSystemGC$AllocateAndSystemGC" 47 ); 48 49 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 50 51 output.shouldNotContain("error"); 52 53 output.shouldHaveExitValue(0); 54 } 55 static class AllocateAndSystemGC { 56 public static void main(String [] args) { 57 Integer x[] = new Integer [1000]; 58 // Allocate enough objects to cause a minor collection. 59 // These allocations suffice for a 4m young geneneration. 60 for (int i = 0; i < 100; i++) { 61 Integer y[] = new Integer[10000]; 62 } 63 System.gc(); 64 } 65 } 66 }