russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
106 lines
3.7 KiB
Java
106 lines
3.7 KiB
Java
/*
|
|
* Copyright (c) 2025, 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
|
|
* @bug 8352969
|
|
* @summary Tests optional evacuation.
|
|
* @requires vm.gc.G1
|
|
* @requires vm.debug
|
|
* @library /test/lib
|
|
* @build jdk.test.whitebox.WhiteBox
|
|
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
|
|
* @run driver gc.g1.TestOptionalRegionGC
|
|
*/
|
|
|
|
package gc.g1;
|
|
|
|
import jdk.test.lib.Asserts;
|
|
import jdk.test.lib.process.OutputAnalyzer;
|
|
import jdk.test.lib.process.ProcessTools;
|
|
import jdk.test.whitebox.WhiteBox;
|
|
|
|
import java.util.ArrayList;
|
|
import java.util.List;
|
|
import java.util.Objects;
|
|
import java.util.Random;
|
|
import java.util.regex.Matcher;
|
|
import java.util.regex.Pattern;
|
|
|
|
public class TestOptionalRegionGC {
|
|
|
|
private static OutputAnalyzer run() throws Exception {
|
|
return ProcessTools.executeLimitedTestJava(
|
|
"-XX:+WhiteBoxAPI",
|
|
"-Xbootclasspath/a:.",
|
|
"-Xmx300M",
|
|
"-Xms300M",
|
|
"-XX:G1HeapRegionSize=1M",
|
|
"-XX:+UseG1GC",
|
|
"-XX:MaxTenuringThreshold=1",
|
|
"-Xlog:gc+ergo+cset=trace",
|
|
"-XX:+G1ForceOptionalEvacuation",
|
|
"-XX:+VerifyAfterGC",
|
|
TestOptionalRegionGC.Action.class.getName());
|
|
}
|
|
|
|
public static void main(String args[]) throws Exception {
|
|
OutputAnalyzer out = run();
|
|
out.shouldHaveExitValue(0);
|
|
Pattern pattern = Pattern.compile("Prepared (\\d+) regions out of (\\d+) for optional evacuation");
|
|
Matcher matcher = pattern.matcher(out.getOutput());
|
|
Asserts.assertTrue(matcher.find());
|
|
String selectedNum = matcher.group(1);
|
|
String totalNum = matcher.group(2);
|
|
Asserts.assertTrue(Objects.equals(selectedNum, totalNum), "Error info: " + selectedNum + ", " + totalNum);
|
|
}
|
|
|
|
public static class Action {
|
|
private static final WhiteBox wb = WhiteBox.getWhiteBox();
|
|
private static final int MIN_OBJECT_SIZE = 64 * 1024;
|
|
private static final int MAX_OBJECT_SIZE = 120 * 1024;
|
|
private static final int NUM_OBJECTS = 1200;
|
|
|
|
public static void main(String [] args) throws Exception {
|
|
// Remove garbage from VM initialization.
|
|
wb.fullGC();
|
|
Random rand = new Random(42);
|
|
List<byte[]> objectList = new ArrayList<>();
|
|
for (int i = 0; i < NUM_OBJECTS; i++) {
|
|
int objSize = MIN_OBJECT_SIZE + rand.nextInt(MAX_OBJECT_SIZE - MIN_OBJECT_SIZE);
|
|
byte[] obj = new byte[objSize];
|
|
objectList.add(obj);
|
|
}
|
|
// Young GC promotes some objects to the old generation.
|
|
wb.youngGC();
|
|
// Clear certain references for mixed GC.
|
|
for (int i = 0; i < NUM_OBJECTS; i+=2) {
|
|
objectList.set(i, null);
|
|
}
|
|
wb.g1RunConcurrentGC();
|
|
// Perform the "Prepare Mixed" GC.
|
|
wb.youngGC();
|
|
// Perform the "Mixed" GC.
|
|
wb.youngGC();
|
|
}
|
|
}
|
|
}
|