| /* |
| * Copyright (c) 2016, 2018, Red Hat, Inc. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| /* |
| * @test TestThreadCounts |
| * @summary Test that Shenandoah GC thread counts are handled well |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @run driver TestThreadCounts |
| */ |
| |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| public class TestThreadCounts { |
| public static void main(String[] args) throws Exception { |
| for (int conc = 0; conc < 16; conc++) { |
| for (int par = 0; par < 16; par++) { |
| testWith(conc, par); |
| } |
| } |
| } |
| |
| private static void testWith(int conc, int par) throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-Xmx128m", |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:+UnlockExperimentalVMOptions", |
| "-XX:+UseShenandoahGC", |
| "-XX:ConcGCThreads=" + conc, |
| "-XX:ParallelGCThreads=" + par, |
| "-version"); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| |
| if (conc == 0) { |
| output.shouldContain("Shenandoah expects ConcGCThreads > 0"); |
| output.shouldHaveExitValue(1); |
| } else if (par == 0) { |
| output.shouldContain("Shenandoah expects ParallelGCThreads > 0"); |
| output.shouldHaveExitValue(1); |
| } else if (conc > par) { |
| output.shouldContain("Shenandoah expects ConcGCThreads <= ParallelGCThreads"); |
| output.shouldHaveExitValue(1); |
| } else { |
| output.shouldNotContain("Shenandoah expects ConcGCThreads <= ParallelGCThreads"); |
| output.shouldHaveExitValue(0); |
| } |
| } |
| |
| } |