1 /* 2 * Copyright (c) 2014, 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 TestGCId 26 * @bug 8043607 27 * @summary Ensure that the GCId is logged 28 * @requires vm.gc=="null" 29 * @key gc 30 * @library /test/lib 31 * @modules java.base/jdk.internal.misc 32 * java.management 33 */ 34 35 import jdk.test.lib.process.OutputAnalyzer; 36 import jdk.test.lib.process.ProcessTools; 37 38 public class TestGCId { 39 public static void main(String[] args) throws Exception { 40 testGCId("UseParallelGC"); 41 testGCId("UseG1GC"); 42 testGCId("UseConcMarkSweepGC"); 43 testGCId("UseSerialGC"); 44 testGCId("UseShenandoahGC"); 45 } 46 47 private static void verifyContainsGCIDs(OutputAnalyzer output) { 48 output.shouldMatch("\\[.*\\]\\[.*\\]\\[.*\\] GC\\(0\\) "); 49 output.shouldMatch("\\[.*\\]\\[.*\\]\\[.*\\] GC\\(1\\) "); 50 output.shouldHaveExitValue(0); 51 } 52 53 private static void testGCId(String gcFlag) throws Exception { 54 ProcessBuilder pb_default = 55 ProcessTools.createJavaProcessBuilder("-XX:+UnlockExperimentalVMOptions", "-XX:+" + gcFlag, "-Xlog:gc", "-Xmx10M", GCTest.class.getName()); 56 verifyContainsGCIDs(new OutputAnalyzer(pb_default.start())); 57 } 58 59 static class GCTest { 60 private static byte[] garbage; 61 public static void main(String [] args) { 62 System.out.println("Creating garbage"); 63 // create 128MB of garbage. This should result in at least one GC 64 for (int i = 0; i < 1024; i++) { 65 garbage = new byte[128 * 1024]; 66 } 67 // do a system gc to get one more gc 68 System.gc(); 69 System.out.println("Done"); 70 } 71 } 72 }