--- a/test/hotspot/jtreg/gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java Wed Nov 20 09:28:31 2019 +0900
+++ /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: <MetaspaceSize>");
- }
-
- 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;
- }
- }
-}
-