1 /* 2 * Copyright (c) 2016, 2018, Red Hat, Inc. 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 25 /* 26 * @test TestThreadCountsOverride 27 * @summary Test that Shenandoah GC thread counts are overridable 28 * @requires vm.gc.Shenandoah 29 * @library /test/lib 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @run driver TestThreadCountsOverride 33 */ 34 35 import jdk.test.lib.process.ProcessTools; 36 import jdk.test.lib.process.OutputAnalyzer; 37 38 public class TestThreadCountsOverride { 39 public static void main(String[] args) throws Exception { 40 { 41 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 42 "-XX:+UnlockDiagnosticVMOptions", 43 "-XX:+UnlockExperimentalVMOptions", 44 "-XX:+UseShenandoahGC", 45 "-XX:ParallelGCThreads=1", 46 "-XX:+PrintFlagsFinal", 47 "-version"); 48 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 49 50 output.shouldMatch("ParallelGCThreads(.*)= 1 "); 51 output.shouldHaveExitValue(0); 52 } 53 54 { 55 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 56 "-XX:+UnlockDiagnosticVMOptions", 57 "-XX:+UnlockExperimentalVMOptions", 58 "-XX:+UseShenandoahGC", 59 "-XX:ConcGCThreads=1", 60 "-XX:+PrintFlagsFinal", 61 "-version"); 62 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 63 64 output.shouldMatch("ConcGCThreads(.*)= 1 "); 65 output.shouldHaveExitValue(0); 66 } 67 } 68 69 }