71 lines
2.6 KiB
Java
71 lines
2.6 KiB
Java
/*
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* Copyright (c) 2015, 2023, Oracle and/or its affiliates. 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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package gc.arguments;
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/*
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* @test TestSelectDefaultGC
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* @summary Test selection of GC when no GC option is specified
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* @bug 8068582
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* @library /test/lib
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* @library /
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* @requires vm.gc.Serial & vm.gc.G1
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* @modules java.base/jdk.internal.misc
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* java.management
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* @run driver gc.arguments.TestSelectDefaultGC
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*/
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import jdk.test.lib.process.OutputAnalyzer;
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public class TestSelectDefaultGC {
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public static void assertVMOption(OutputAnalyzer output, String option, boolean value) {
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output.shouldMatch(" " + option + " .*=.* " + value + " ");
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}
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public static void testDefaultGC(boolean actAsServer) throws Exception {
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// Start VM without specifying GC
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OutputAnalyzer output = GCArguments.executeLimitedTestJava(
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"-XX:" + (actAsServer ? "+" : "-") + "AlwaysActAsServerClassMachine",
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"-XX:" + (actAsServer ? "-" : "+") + "NeverActAsServerClassMachine",
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"-XX:+PrintFlagsFinal",
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"-version");
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output.shouldHaveExitValue(0);
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final boolean isServer = actAsServer;
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// Verify GC selection
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// G1 is default for server class machines
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assertVMOption(output, "UseG1GC", isServer);
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// Serial is default for non-server class machines
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assertVMOption(output, "UseSerialGC", !isServer);
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}
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public static void main(String[] args) throws Exception {
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// Test server class machine
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testDefaultGC(false);
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// Test non-server class machine
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testDefaultGC(true);
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}
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}
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