1 /* 2 * Copyright (c) 2015, 2016, 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 TestInitialGCThreadLogging 26 * @bug 8157240 27 * @summary Check trace logging of initial GC threads. 28 * @requires vm.gc=="null" 29 * @key gc 30 * @modules java.base/jdk.internal.misc 31 * @library /test/lib 32 */ 33 34 import jdk.test.lib.process.ProcessTools; 35 import jdk.test.lib.process.OutputAnalyzer; 36 37 public class TestInitialGCThreadLogging { 38 public static void main(String[] args) throws Exception { 39 40 testInitialGCThreadLogging("UseConcMarkSweepGC", "GC Thread"); 41 42 testInitialGCThreadLogging("UseG1GC", "GC Thread"); 43 44 testInitialGCThreadLogging("UseParallelGC", "ParGC Thread"); 45 } 46 47 private static void verifyDynamicNumberOfGCThreads(OutputAnalyzer output, String threadName) { 48 output.shouldHaveExitValue(0); // test should run succesfully 49 output.shouldContain(threadName); 50 } 51 52 private static void testInitialGCThreadLogging(String gcFlag, String threadName) throws Exception { 53 // UseDynamicNumberOfGCThreads and TraceDynamicGCThreads enabled 54 String[] baseArgs = {"-XX:+" + gcFlag, "-Xmx10M", "-XX:+UseDynamicNumberOfGCThreads", "-Xlog:gc+task=trace", "-version"}; 55 56 // Base test with gc and +UseDynamicNumberOfGCThreads: 57 ProcessBuilder pb_enabled = ProcessTools.createJavaProcessBuilder(baseArgs); 58 verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()), threadName); 59 } 60 }