1 /* 2 * Copyright (c) 2014, 2015, 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 TestGCId 26 * @bug 8043607 27 * @summary Ensure that the GCId is logged 28 * @key gc 29 * @library /testlibrary 30 * @modules java.base/sun.misc 31 * java.management 32 */ 33 34 import jdk.test.lib.ProcessTools; 35 import jdk.test.lib.OutputAnalyzer; 36 37 public class TestGCId { 38 public static void main(String[] args) throws Exception { 39 testGCId("UseParallelGC"); 40 testGCId("UseG1GC"); 41 testGCId("UseConcMarkSweepGC"); 42 testGCId("UseSerialGC"); 43 } 44 45 private static void verifyContainsGCIDs(OutputAnalyzer output) { 46 output.shouldMatch("\\[.*\\]\\[.*\\]\\[.*\\] GC\\(0\\) "); 47 output.shouldMatch("\\[.*\\]\\[.*\\]\\[.*\\] GC\\(1\\) "); 48 output.shouldHaveExitValue(0); 49 } 50 51 private static void testGCId(String gcFlag) throws Exception { 52 ProcessBuilder pb_default = 53 ProcessTools.createJavaProcessBuilder("-XX:+" + gcFlag, "-Xlog:gc", "-Xmx10M", GCTest.class.getName()); 54 verifyContainsGCIDs(new OutputAnalyzer(pb_default.start())); 55 } 56 57 static class GCTest { 58 private static byte[] garbage; 59 public static void main(String [] args) { 60 System.out.println("Creating garbage"); 61 // create 128MB of garbage. This should result in at least one GC 62 for (int i = 0; i < 1024; i++) { 63 garbage = new byte[128 * 1024]; 64 } 65 // do a system gc to get one more gc 66 System.gc(); 67 System.out.println("Done"); 68 } 69 } 70 }