59 lines
2.2 KiB
Java
59 lines
2.2 KiB
Java
/*
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* Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.lang.management.GarbageCollectorMXBean;
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import java.lang.management.ManagementFactory;
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/*
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* @test id=default
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* @requires vm.gc.Shenandoah & vm.gc == "null"
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* @run main/othervm -Dexpected=false -Xmx64m TestEnabled
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* @run main/othervm -Dexpected=true -Xmx64m -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC TestEnabled
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*/
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/*
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* @test id=already
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* @requires vm.gc.Shenandoah & vm.gc == "Shenandoah"
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* @run main/othervm -Dexpected=true -Xmx64m TestEnabled
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*/
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public class TestEnabled {
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public static void main(String... args) {
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boolean expected = Boolean.getBoolean("expected");
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boolean actual = isEnabled();
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if (expected != actual) {
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throw new IllegalStateException("Error: expected = " + expected + ", actual = " + actual);
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}
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}
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public static boolean isEnabled() {
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for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
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if (bean.getName().contains("Shenandoah")) {
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return true;
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}
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}
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return false;
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}
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}
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