93 lines
3.3 KiB
Java
93 lines
3.3 KiB
Java
/*
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* Copyright (c) 2014, 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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/*
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* @test
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* @key gc
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* @bug 8049831
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* @library /testlibrary /testlibrary/whitebox
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* @build TestCMSClassUnloadingEnabledHWM AllocateBeyondMetaspaceSize
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* @run main ClassFileInstaller sun.hotspot.WhiteBox
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* sun.hotspot.WhiteBox$WhiteBoxPermission
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* @run driver TestCMSClassUnloadingEnabledHWM
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* @summary Test that -XX:-CMSClassUnloadingEnabled will trigger a Full GC when more than MetaspaceSize metadata is allocated.
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*/
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import com.oracle.java.testlibrary.OutputAnalyzer;
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import com.oracle.java.testlibrary.ProcessTools;
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import java.util.ArrayList;
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import java.util.Arrays;
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public class TestCMSClassUnloadingEnabledHWM {
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private static long MetaspaceSize = 32 * 1024 * 1024;
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private static long YoungGenSize = 32 * 1024 * 1024;
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private static OutputAnalyzer run(boolean enableUnloading) throws Exception {
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ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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"-Xbootclasspath/a:.",
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"-XX:+UnlockDiagnosticVMOptions",
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"-XX:+WhiteBoxAPI",
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"-XX:MetaspaceSize=" + MetaspaceSize,
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"-Xmn" + YoungGenSize,
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"-XX:+UseConcMarkSweepGC",
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"-XX:" + (enableUnloading ? "+" : "-") + "CMSClassUnloadingEnabled",
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"-XX:+PrintHeapAtGC",
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"-XX:+PrintGCDetails",
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"AllocateBeyondMetaspaceSize",
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"" + MetaspaceSize,
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"" + YoungGenSize);
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return new OutputAnalyzer(pb.start());
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}
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public static OutputAnalyzer runWithCMSClassUnloading() throws Exception {
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return run(true);
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}
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public static OutputAnalyzer runWithoutCMSClassUnloading() throws Exception {
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return run(false);
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}
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public static void testWithoutCMSClassUnloading() throws Exception {
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// -XX:-CMSClassUnloadingEnabled is used, so we expect a full GC instead of a concurrent cycle.
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OutputAnalyzer out = runWithoutCMSClassUnloading();
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out.shouldMatch(".*Full GC.*");
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out.shouldNotMatch(".*CMS Initial Mark.*");
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}
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public static void testWithCMSClassUnloading() throws Exception {
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// -XX:+CMSClassUnloadingEnabled is used, so we expect a concurrent cycle instead of a full GC.
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OutputAnalyzer out = runWithCMSClassUnloading();
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out.shouldMatch(".*CMS Initial Mark.*");
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out.shouldNotMatch(".*Full GC.*");
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}
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public static void main(String args[]) throws Exception {
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testWithCMSClassUnloading();
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testWithoutCMSClassUnloading();
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}
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}
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