1 /* 2 * Copyright (c) 2014, 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 * @build com.oracle.java.testlibrary.* 31 * @run main/othervm TestGCId 32 */ 33 34 import com.oracle.java.testlibrary.ProcessTools; 35 import com.oracle.java.testlibrary.OutputAnalyzer; 36 37 public class TestGCId { 38 public static void main(String[] args) throws Exception { 39 testGCId("UseParallelGC", "PrintGC"); 40 testGCId("UseParallelGC", "PrintGCDetails"); 41 42 testGCId("UseG1GC", "PrintGC"); 43 testGCId("UseG1GC", "PrintGCDetails"); 44 45 testGCId("UseConcMarkSweepGC", "PrintGC"); 46 testGCId("UseConcMarkSweepGC", "PrintGCDetails"); 47 48 testGCId("UseSerialGC", "PrintGC"); 49 testGCId("UseSerialGC", "PrintGCDetails"); 50 } 51 52 private static void verifyContainsGCIDs(OutputAnalyzer output) { 53 output.shouldMatch("^#0: \\["); 54 output.shouldMatch("^#1: \\["); 55 output.shouldHaveExitValue(0); 56 } 57 58 private static void verifyContainsNoGCIDs(OutputAnalyzer output) { 59 output.shouldNotMatch("^#[0-9]+: \\["); 60 output.shouldHaveExitValue(0); 61 } 62 63 private static void testGCId(String gcFlag, String logFlag) throws Exception { 64 // GCID logging enabled 65 ProcessBuilder pb_enabled = 66 ProcessTools.createJavaProcessBuilder("-XX:+" + gcFlag, "-XX:+" + logFlag, "-Xmx10M", "-XX:+PrintGCID", GCTest.class.getName()); 67 verifyContainsGCIDs(new OutputAnalyzer(pb_enabled.start())); 68 69 // GCID logging disabled 70 ProcessBuilder pb_disabled = 71 ProcessTools.createJavaProcessBuilder("-XX:+" + gcFlag, "-XX:+" + logFlag, "-Xmx10M", "-XX:-PrintGCID", GCTest.class.getName()); 72 verifyContainsNoGCIDs(new OutputAnalyzer(pb_disabled.start())); 73 74 // GCID logging default 75 ProcessBuilder pb_default = 76 ProcessTools.createJavaProcessBuilder("-XX:+" + gcFlag, "-XX:+" + logFlag, "-Xmx10M", GCTest.class.getName()); 77 verifyContainsGCIDs(new OutputAnalyzer(pb_default.start())); 78 } 79 80 static class GCTest { 81 private static byte[] garbage; 82 public static void main(String [] args) { 83 System.out.println("Creating garbage"); 84 // create 128MB of garbage. This should result in at least one GC 85 for (int i = 0; i < 1024; i++) { 86 garbage = new byte[128 * 1024]; 87 } 88 // do a system gc to get one more gc 89 System.gc(); 90 System.out.println("Done"); 91 } 92 } 93 }