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 TestPeriodicGC 26 * @summary Test that periodic GC is working 27 * @key gc 28 * @requires vm.gc.Shenandoah 29 * @library /test/lib 30 * @run driver TestPeriodicGC 31 */ 32 33 import java.util.*; 34 35 import jdk.test.lib.Asserts; 36 import jdk.test.lib.process.ProcessTools; 37 import jdk.test.lib.process.OutputAnalyzer; 38 39 public class TestPeriodicGC { 40 41 public static void testWith(String msg, boolean periodic, String... args) throws Exception { 42 String[] cmds = Arrays.copyOf(args, args.length + 2); 43 cmds[args.length] = TestPeriodicGC.class.getName(); 44 cmds[args.length + 1] = "test"; 45 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds); 46 47 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 48 output.shouldHaveExitValue(0); 49 if (periodic && !output.getOutput().contains("Trigger: Time since last GC")) { 50 throw new AssertionError(msg + ": Should have periodic GC in logs"); 51 } 52 if (!periodic && output.getOutput().contains("Trigger: Time since last GC")) { 53 throw new AssertionError(msg + ": Should not have periodic GC in logs"); 54 } 55 } 56 57 public static void main(String[] args) throws Exception { 58 if (args.length > 0 && args[0].equals("test")) { 59 Thread.sleep(5000); // stay idle 60 return; 61 } 62 63 String[] enabled = new String[] { 64 "adaptive", 65 "compact", 66 "static", 67 "traversal", 68 }; 69 70 String[] disabled = new String[] { 71 "aggressive", 72 "passive", 73 }; 74 75 for (String h : enabled) { 76 testWith("Short period with " + h, 77 true, 78 "-Xlog:gc", 79 "-XX:+UnlockDiagnosticVMOptions", 80 "-XX:+UnlockExperimentalVMOptions", 81 "-XX:+UseShenandoahGC", 82 "-XX:ShenandoahGCHeuristics=" + h, 83 "-XX:ShenandoahGuaranteedGCInterval=1000" 84 ); 85 86 testWith("Long period with " + h, 87 false, 88 "-Xlog:gc", 89 "-XX:+UnlockDiagnosticVMOptions", 90 "-XX:+UnlockExperimentalVMOptions", 91 "-XX:+UseShenandoahGC", 92 "-XX:ShenandoahGCHeuristics=" + h, 93 "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long 94 ); 95 } 96 97 for (String h : disabled) { 98 testWith("Short period with " + h, 99 false, 100 "-Xlog:gc", 101 "-XX:+UnlockDiagnosticVMOptions", 102 "-XX:+UnlockExperimentalVMOptions", 103 "-XX:+UseShenandoahGC", 104 "-XX:ShenandoahGCHeuristics=" + h, 105 "-XX:ShenandoahGuaranteedGCInterval=1000" 106 ); 107 } 108 } 109 110 }