1 /* 2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 /* 25 * @test TestExplicitGCNoConcurrent 26 * @summary Test that Shenandoah reacts to explicit GC flags appropriately 27 * @key gc 28 * @requires vm.gc.Shenandoah & !vm.graal.enabled 29 * @library /test/lib 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @run driver TestExplicitGCNoConcurrent 33 */ 34 35 import jdk.test.lib.process.ProcessTools; 36 import jdk.test.lib.process.OutputAnalyzer; 37 38 public class TestExplicitGCNoConcurrent { 39 40 public static void main(String[] args) throws Exception { 41 if (args.length > 0) { 42 System.out.println("Calling System.gc()"); 43 System.gc(); 44 return; 45 } 46 47 String[] concurrent = new String[] { 48 "Pause Init Mark", 49 "Pause Final Mark", 50 "Pause Init Update Refs", 51 "Pause Final Update Refs", 52 "Pause Init Traversal", 53 "Pause Final Traversal", 54 }; 55 56 String[] opts = new String[] { 57 "", 58 "-XX:-ExplicitGCInvokesConcurrent", 59 "-XX:+ExplicitGCInvokesConcurrent" 60 }; 61 62 for (String opt : opts) { 63 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 64 "-XX:+UnlockExperimentalVMOptions", 65 "-XX:+UseShenandoahGC", 66 "-Xlog:gc", 67 "-XX:+UnlockDiagnosticVMOptions", 68 opt, 69 "-XX:ShenandoahGCHeuristics=passive", 70 TestExplicitGCNoConcurrent.class.getName(), 71 "test"); 72 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 73 for (String p : concurrent) { 74 output.shouldNotContain(p); 75 } 76 } 77 } 78 }