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 TestExplicitGC 26 * @summary Test that Shenandoah reacts to explicit GC flags appropriately 27 * @key gc 28 * @library /testlibrary 29 * 30 * @run driver TestExplicitGC 31 */ 32 33 import com.oracle.java.testlibrary.*; 34 35 public class TestExplicitGC { 36 37 enum Mode { 38 PRODUCT, 39 DIAGNOSTIC, 40 EXPERIMENTAL, 41 } 42 43 public static void main(String[] args) throws Exception { 44 if (args.length > 0) { 45 System.out.println("Calling System.gc()"); 46 System.gc(); 47 return; 48 } 49 50 String[] full = new String[] { 51 "Pause Full" 52 }; 53 54 String[] concurrent = new String[] { 55 "Pause Init Mark", 56 "Pause Final Mark", 57 }; 58 59 { 60 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 61 "-XX:+UnlockExperimentalVMOptions", 62 "-XX:+UseShenandoahGC", 63 "-verbose:gc", 64 TestExplicitGC.class.getName(), 65 "test"); 66 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 67 for (String p : full) { 68 output.shouldNotContain(p); 69 } 70 for (String p : concurrent) { 71 output.shouldContain(p); 72 } 73 } 74 75 { 76 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 77 "-XX:+UnlockExperimentalVMOptions", 78 "-XX:+UseShenandoahGC", 79 "-verbose:gc", 80 "-XX:+DisableExplicitGC", 81 TestExplicitGC.class.getName(), 82 "test"); 83 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 84 for (String p : full) { 85 output.shouldNotContain(p); 86 } 87 for (String p : concurrent) { 88 output.shouldNotContain(p); 89 } 90 } 91 92 { 93 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 94 "-XX:+UnlockExperimentalVMOptions", 95 "-XX:+UseShenandoahGC", 96 "-verbose:gc", 97 "-XX:+ExplicitGCInvokesConcurrent", 98 TestExplicitGC.class.getName(), 99 "test"); 100 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 101 for (String p : full) { 102 output.shouldNotContain(p); 103 } 104 for (String p : concurrent) { 105 output.shouldContain(p); 106 } 107 } 108 109 { 110 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 111 "-XX:+UnlockExperimentalVMOptions", 112 "-XX:+UseShenandoahGC", 113 "-verbose:gc", 114 "-XX:-ExplicitGCInvokesConcurrent", 115 TestExplicitGC.class.getName(), 116 "test"); 117 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 118 for (String p : full) { 119 output.shouldContain(p); 120 } 121 for (String p : concurrent) { 122 output.shouldNotContain(p); 123 } 124 } 125 } 126 }