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 * @library /testlibrary 29 * 30 * @run driver TestExplicitGCNoConcurrent 31 */ 32 33 import com.oracle.java.testlibrary.*; 34 35 public class TestExplicitGCNoConcurrent { 36 37 public static void main(String[] args) throws Exception { 38 if (args.length > 0) { 39 System.out.println("Calling System.gc()"); 40 System.gc(); 41 return; 42 } 43 44 String[] concurrent = new String[] { 45 "Pause Init Mark", 46 "Pause Final Mark", 47 "Pause Init Update Refs", 48 "Pause Final Update Refs", 49 }; 50 51 String[] opts = new String[] { 52 "", 53 "-XX:-ExplicitGCInvokesConcurrent", 54 "-XX:+ExplicitGCInvokesConcurrent" 55 }; 56 57 for (String opt : opts) { 58 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 59 "-Xmx128m", 60 "-XX:+UnlockExperimentalVMOptions", 61 "-XX:+UseShenandoahGC", 62 "-verbose:gc", 63 "-XX:+UnlockDiagnosticVMOptions", 64 opt, 65 "-XX:ShenandoahGCHeuristics=passive", 66 TestExplicitGCNoConcurrent.class.getName(), 67 "test"); 68 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 69 for (String p : concurrent) { 70 output.shouldNotContain(p); 71 } 72 } 73 } 74 }