1 /* 2 * Copyright (c) 2017, 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; 25 26 import static jdk.test.lib.Asserts.*; 27 import gc.testlibrary.PerfCounters; 28 29 30 /* @test TestGenerationPerfCounter 31 * @bug 8080345 32 * @requires vm.gc=="null" 33 * @library /test/lib / 34 * @summary Tests that the sun.gc.policy.generations returns 2 for all GCs. 35 * @modules java.base/jdk.internal.misc 36 * java.compiler 37 * java.management/sun.management 38 * jdk.internal.jvmstat/sun.jvmstat.monitor 39 * @run main/othervm -XX:+UsePerfData -XX:+UseSerialGC gc.TestGenerationPerfCounter 40 * @run main/othervm -XX:+UsePerfData -XX:+UseParallelGC gc.TestGenerationPerfCounter 41 * @run main/othervm -XX:+UsePerfData -XX:+UseG1GC gc.TestGenerationPerfCounter 42 */ 43 44 /* @test TestGenerationPerfCounterCMS 45 * @bug 8080345 46 * @comment Graal does not support CMS 47 * @requires vm.gc=="null" & !vm.graal.enabled 48 * @library /test/lib / 49 * @summary Tests that the sun.gc.policy.generations returns 2 for all GCs. 50 * @modules java.base/jdk.internal.misc 51 * java.compiler 52 * java.management/sun.management 53 * jdk.internal.jvmstat/sun.jvmstat.monitor 54 * @run main/othervm -XX:+UsePerfData -XX:+UseConcMarkSweepGC gc.TestGenerationPerfCounter 55 */ 56 57 public class TestGenerationPerfCounter { 58 public static void main(String[] args) throws Exception { 59 long numGenerations = 60 PerfCounters.findByName("sun.gc.policy.generations").longValue(); 61 assertEQ(numGenerations, 2L); 62 } 63 }