Mercurial > hg > graal-compiler
view test/gc/class_unloading/TestG1ClassUnloadingHWM.java @ 21697:696baf53a985
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 03 Jun 2015 14:15:42 +0200 |
parents | 85f4c4ecc963 |
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/* * Copyright (c) 2014, 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. */ /* * @test * @key gc * @bug 8049831 * @library /testlibrary /testlibrary/whitebox * @build TestG1ClassUnloadingHWM * @run main ClassFileInstaller sun.hotspot.WhiteBox * @run driver TestG1ClassUnloadingHWM * @summary Test that -XX:-ClassUnloadingWithConcurrentMark will trigger a Full GC when more than MetaspaceSize metadata is allocated. */ import com.oracle.java.testlibrary.OutputAnalyzer; import com.oracle.java.testlibrary.ProcessTools; import java.util.ArrayList; import java.util.Arrays; import sun.hotspot.WhiteBox; public class TestG1ClassUnloadingHWM { 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", "-XX:MetaspaceSize=" + MetaspaceSize, "-Xmn" + YoungGenSize, "-XX:+UseG1GC", "-XX:" + (enableUnloading ? "+" : "-") + "ClassUnloadingWithConcurrentMark", "-XX:+PrintHeapAtGC", "-XX:+PrintGCDetails", TestG1ClassUnloadingHWM.AllocateBeyondMetaspaceSize.class.getName(), "" + MetaspaceSize, "" + YoungGenSize); return new OutputAnalyzer(pb.start()); } public static OutputAnalyzer runWithG1ClassUnloading() throws Exception { return run(true); } public static OutputAnalyzer runWithoutG1ClassUnloading() throws Exception { return run(false); } public static void testWithoutG1ClassUnloading() throws Exception { // -XX:-ClassUnloadingWithConcurrentMark is used, so we expect a full GC instead of a concurrent cycle. OutputAnalyzer out = runWithoutG1ClassUnloading(); out.shouldMatch(".*Full GC.*"); out.shouldNotMatch(".*initial-mark.*"); } public static void testWithG1ClassUnloading() throws Exception { // -XX:+ClassUnloadingWithConcurrentMark is used, so we expect a concurrent cycle instead of a full GC. OutputAnalyzer out = runWithG1ClassUnloading(); out.shouldMatch(".*initial-mark.*"); out.shouldNotMatch(".*Full GC.*"); } public static void main(String args[]) throws Exception { testWithG1ClassUnloading(); testWithoutG1ClassUnloading(); } public static class AllocateBeyondMetaspaceSize { public static Object dummy; public static void main(String [] args) throws Exception { if (args.length != 2) { throw new IllegalArgumentException("Usage: <MetaspaceSize> <YoungGenSize>"); } 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); long youngGenSize = Long.parseLong(args[1]); triggerYoungGCs(youngGenSize); wb.freeMetaspace(null, metaspace, metaspace); } public static void triggerYoungGCs(long youngGenSize) { long approxAllocSize = 32 * 1024; long numAllocations = 2 * youngGenSize / approxAllocSize; for (long i = 0; i < numAllocations; i++) { dummy = new byte[(int)approxAllocSize]; } } } }