1 /* 2 * Copyright (c) 2015, 2019, 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 package gc.ergonomics; 25 26 /* 27 * @test TestInitialGCThreadLogging 28 * @bug 8157240 29 * @summary Check trace logging of initial GC threads. 30 * @key gc 31 * @modules java.base/jdk.internal.misc 32 * @library /test/lib 33 * @build sun.hotspot.WhiteBox 34 * @run driver ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission 35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI gc.ergonomics.TestInitialGCThreadLogging 36 */ 37 38 import jdk.test.lib.process.ProcessTools; 39 import jdk.test.lib.process.OutputAnalyzer; 40 import jtreg.SkippedException; 41 import sun.hotspot.gc.GC; 42 43 public class TestInitialGCThreadLogging { 44 public static void main(String[] args) throws Exception { 45 boolean noneGCSupported = true; 46 47 if (GC.ConcMarkSweep.isSupported()) { 48 noneGCSupported = false; 49 testInitialGCThreadLogging("UseConcMarkSweepGC", "GC Thread"); 50 } 51 52 if (GC.G1.isSupported()) { 53 noneGCSupported = false; 54 testInitialGCThreadLogging("UseG1GC", "GC Thread"); 55 } 56 57 if (GC.Parallel.isSupported()) { 58 noneGCSupported = false; 59 testInitialGCThreadLogging("UseParallelGC", "GC Thread"); 60 } 61 62 if (GC.Shenandoah.isSupported()) { 63 noneGCSupported = false; 64 testInitialGCThreadLogging("UseShenandoahGC", "Shenandoah GC Thread"); 65 } 66 67 if (noneGCSupported) { 68 throw new SkippedException("Skipping test because none of ConcMarkSweep/G1/Parallel/Shenandoah is supported."); 69 } 70 } 71 72 private static void verifyDynamicNumberOfGCThreads(OutputAnalyzer output, String threadName) { 73 output.shouldHaveExitValue(0); // test should run succesfully 74 output.shouldContain(threadName); 75 } 76 77 private static void testInitialGCThreadLogging(String gcFlag, String threadName) throws Exception { 78 // UseDynamicNumberOfGCThreads and TraceDynamicGCThreads enabled 79 String[] baseArgs = {"-XX:+UnlockExperimentalVMOptions", "-XX:+" + gcFlag, "-Xmx10M", "-XX:+UseDynamicNumberOfGCThreads", "-Xlog:gc+task=trace", "-version"}; 80 81 // Base test with gc and +UseDynamicNumberOfGCThreads: 82 ProcessBuilder pb_enabled = ProcessTools.createJavaProcessBuilder(baseArgs); 83 verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()), threadName); 84 } 85 }