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8051883: TEST.groups references missing test: gc/class_unloading/TestCMSClassUnloadingDisabledHWM.java

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Reviewed-by: brutisso, tschatzl, ehelin, jmasa, dfazunen
This commit is contained in:
Stefan Karlsson 2014-08-04 15:04:45 +02:00
parent 47e31eaa7a
commit bdeaedbd38
1 changed files with 105 additions and 0 deletions
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hotspot/test/gc/class_unloading/TestCMSClassUnloadingDisabledHWM.java Normal file
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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 TestCMSClassUnloadingDisabledHWM
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* @run driver TestCMSClassUnloadingDisabledHWM
* @summary Test that -XX:-CMSClassUnloadingEnabled 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 sun.hotspot.WhiteBox;
import java.util.ArrayList;
import java.util.Arrays;
public class TestCMSClassUnloadingDisabledHWM {
private static OutputAnalyzer run(long metaspaceSize, long youngGenSize) throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-Xbootclasspath/a:.",
"-XX:+WhiteBoxAPI",
"-XX:MetaspaceSize=" + metaspaceSize,
"-Xmn" + youngGenSize,
"-XX:+UseConcMarkSweepGC",
"-XX:-CMSClassUnloadingEnabled",
"-XX:+PrintHeapAtGC",
"-XX:+PrintGCDetails",
"AllocateBeyondMetaspaceSize",
"" + metaspaceSize,
"" + youngGenSize);
return new OutputAnalyzer(pb.start());
}
public static void main(String args[]) throws Exception {
long metaspaceSize = 32 * 1024 * 1024;
long youngGenSize = 32 * 1024 * 1024;
OutputAnalyzer out = run(metaspaceSize, youngGenSize);
// -XX:-CMSClassUnloadingEnabled is used, so we expect a full GC instead of a concurrent cycle.
out.shouldMatch(".*Full GC.*");
out.shouldNotMatch(".*CMS Initial Mark.*");
}
}
class AllocateBeyondMetaspaceSize {
public static Object dummy;
public static void main(String [] args) {
if (args.length != 2) {
throw new IllegalArgumentException("Usage: <MetaspaceSize> <YoungGenSize>");
}
long metaspaceSize = Long.parseLong(args[0]);
long youngGenSize = Long.parseLong(args[1]);
run(metaspaceSize, youngGenSize);
}
private static void run(long metaspaceSize, long youngGenSize) {
WhiteBox wb = WhiteBox.getWhiteBox();
long allocationBeyondMetaspaceSize = metaspaceSize * 2;
long metaspace = wb.allocateMetaspace(null, allocationBeyondMetaspaceSize);
triggerYoungGC(youngGenSize);
wb.freeMetaspace(null, metaspace, metaspace);
}
private static void triggerYoungGC(long youngGenSize) {
long approxAllocSize = 32 * 1024;
long numAllocations = 2 * youngGenSize / approxAllocSize;
for (long i = 0; i < numAllocations; i++) {
dummy = new byte[(int)approxAllocSize];
}
}
}