diff -r f0312c7d5b37 -r ba6c248cae19 test/hotspot/jtreg/gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java --- a/test/hotspot/jtreg/gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java Wed Nov 13 11:21:15 2019 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,130 +0,0 @@ -/* - * Copyright (c) 2014, 2019, Oracle and/or its affiliates. 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. - */ - -package gc.class_unloading; - -/* - * @test - * @key gc - * @bug 8049831 - * @requires vm.gc.ConcMarkSweep & !vm.graal.enabled - * @library /test/lib - * @modules java.base/jdk.internal.misc - * java.management - * @build sun.hotspot.WhiteBox - * @run driver ClassFileInstaller sun.hotspot.WhiteBox - * sun.hotspot.WhiteBox$WhiteBoxPermission - * @run driver gc.class_unloading.TestCMSClassUnloadingEnabledHWM - * @summary Test that -XX:-CMSClassUnloadingEnabled will trigger a Full GC when more than MetaspaceSize metadata is allocated. - */ - -import jdk.test.lib.process.OutputAnalyzer; -import jdk.test.lib.process.ProcessTools; -import java.lang.management.GarbageCollectorMXBean; -import java.lang.management.ManagementFactory; -import sun.hotspot.WhiteBox; - -public class TestCMSClassUnloadingEnabledHWM { - private static long MetaspaceSize = 32 * 1024 * 1024; - private static long YoungGenSize = 32 * 1024 * 1024; - - private static OutputAnalyzer run(boolean enableUnloading) throws Exception { - ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( - "-Xbootclasspath/a:.", - "-XX:+UnlockDiagnosticVMOptions", - "-XX:+WhiteBoxAPI", - "-Xmx128m", - "-XX:CMSMaxAbortablePrecleanTime=1", - "-XX:CMSWaitDuration=50", - "-XX:MetaspaceSize=" + MetaspaceSize, - "-Xmn" + YoungGenSize, - "-XX:+UseConcMarkSweepGC", - "-XX:" + (enableUnloading ? "+" : "-") + "CMSClassUnloadingEnabled", - "-Xlog:gc", - TestCMSClassUnloadingEnabledHWM.AllocateBeyondMetaspaceSize.class.getName(), - "" + MetaspaceSize); - return new OutputAnalyzer(pb.start()); - } - - public static OutputAnalyzer runWithCMSClassUnloading() throws Exception { - return run(true); - } - - public static OutputAnalyzer runWithoutCMSClassUnloading() throws Exception { - return run(false); - } - - public static void testWithoutCMSClassUnloading() throws Exception { - // -XX:-CMSClassUnloadingEnabled is used, so we expect a full GC instead of a concurrent cycle. - OutputAnalyzer out = runWithoutCMSClassUnloading(); - - out.shouldMatch(".*Pause Full.*"); - out.shouldNotMatch(".*Pause Initial Mark.*"); - } - - public static void testWithCMSClassUnloading() throws Exception { - // -XX:+CMSClassUnloadingEnabled is used, so we expect a concurrent cycle instead of a full GC. - OutputAnalyzer out = runWithCMSClassUnloading(); - - out.shouldMatch(".*Pause Initial Mark.*"); - out.shouldNotMatch(".*Pause Full.*"); - } - - public static void main(String args[]) throws Exception { - testWithCMSClassUnloading(); - testWithoutCMSClassUnloading(); - } - - public static class AllocateBeyondMetaspaceSize { - public static void main(String [] args) throws Exception { - if (args.length != 1) { - throw new IllegalArgumentException("Usage: "); - } - - WhiteBox wb = WhiteBox.getWhiteBox(); - - // Allocate past the MetaspaceSize limit. - long metaspaceSize = Long.parseLong(args[0]); - long allocationBeyondMetaspaceSize = metaspaceSize * 2; - long metaspace = wb.allocateMetaspace(null, allocationBeyondMetaspaceSize); - - // Wait for at least one GC to occur. The caller will parse the log files produced. - GarbageCollectorMXBean cmsGCBean = getCMSGCBean(); - while (cmsGCBean.getCollectionCount() == 0) { - Thread.sleep(100); - } - - wb.freeMetaspace(null, metaspace, metaspace); - } - - private static GarbageCollectorMXBean getCMSGCBean() { - for (GarbageCollectorMXBean gcBean : ManagementFactory.getGarbageCollectorMXBeans()) { - if (gcBean.getObjectName().toString().equals("java.lang:type=GarbageCollector,name=ConcurrentMarkSweep")) { - return gcBean; - } - } - return null; - } - } -} -