233 lines
8.2 KiB
Java
233 lines
8.2 KiB
Java
/*
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* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test G1 Full GC execution when JNICritical is active
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* @summary Check that Full GC calls are not ignored if concurrent with an active GCLocker.
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* @bug 8057586
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* @requires vm.gc.G1
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+UseG1GC -Xms1g -Xmx1g -Xlog:gc TestJNICriticalStressTest 30 4 4 G1
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*/
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/*
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* @test Parallel Full GC execution when JNICritical is active
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* @bug 8057586
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* @requires vm.gc.Parallel
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+UseParallelGC -Xms1g -Xmx1g -Xlog:gc TestJNICriticalStressTest 30 4 4 Parallel
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*/
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/*
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* @test Serial Full GC execution when JNICritical is active
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* @bug 8057586
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* @requires vm.gc.Serial
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+UseSerialGC -Xms1g -Xmx1g -Xlog:gc TestJNICriticalStressTest 30 4 4 Serial
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*/
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import jdk.test.lib.Asserts;
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import jdk.test.whitebox.WhiteBox;
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import java.lang.management.GarbageCollectorMXBean;
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import java.lang.management.ManagementFactory;
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import java.util.List;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.zip.Deflater;
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/**
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* Test verifies that Full GC calls are not ignored if concurrent with an active GCLocker.
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*
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* The test checks that at least a full gc is executed in the duration of a WhiteBox.fullGC() call;
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* either by the calling thread or a concurrent thread.
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*/
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public class TestJNICriticalStressTest {
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private static final WhiteBox wb = WhiteBox.getWhiteBox();
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static private final int LARGE_MAP_SIZE = 64 * 1024;
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static private final int MAP_ARRAY_LENGTH = 4;
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static private final int MAP_SIZE = 1024;
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static private final int BYTE_ARRAY_LENGTH = 16 * 1024;
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static private final long SYSTEM_GC_PERIOD_MS = 5 * 1000;
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static private long gcCountBefore = 0;
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static private GarbageCollectorMXBean collector = null;
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static private void println(String str) { System.out.println(str); }
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static private void exit(int code) { System.exit(code); }
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static Map<Integer,String> populateMap(int size) {
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Map<Integer,String> map = new HashMap<Integer,String>();
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for (int i = 0; i < size; i += 1) {
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Integer keyInt = Integer.valueOf(i);
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String valStr = "value is [" + i + "]";
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map.put(keyInt,valStr);
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}
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return map;
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}
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static private class AllocatingWorker implements Runnable {
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private final Object[] array = new Object[MAP_ARRAY_LENGTH];
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private int arrayIndex = 0;
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private void doStep() {
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Map<Integer,String> map = populateMap(MAP_SIZE);
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array[arrayIndex] = map;
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arrayIndex = (arrayIndex + 1) % MAP_ARRAY_LENGTH;
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}
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public void run() {
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while (true) {
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doStep();
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}
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}
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}
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static private class JNICriticalWorker implements Runnable {
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private int count;
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private void doStep() {
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byte[] inputArray = new byte[BYTE_ARRAY_LENGTH];
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for (int i = 0; i < inputArray.length; i += 1) {
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inputArray[i] = (byte) (count + i);
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}
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Deflater deflater = new Deflater();
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deflater.setInput(inputArray);
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deflater.finish();
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byte[] outputArray = new byte[2 * inputArray.length];
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deflater.deflate(outputArray);
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deflater.end();
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count += 1;
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}
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public void run() {
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while (true) {
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doStep();
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}
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}
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}
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static private class SystemGCWorker implements Runnable {
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public void run() {
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long fullGcCounts = 0;
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while (true) {
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try {
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Thread.sleep(SYSTEM_GC_PERIOD_MS);
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} catch (InterruptedException e) {
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e.printStackTrace();
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return;
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}
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long gcCountBefore = collector.getCollectionCount();
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wb.fullGC();
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long gcCountAfter = collector.getCollectionCount();
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Asserts.assertLessThan(gcCountBefore, gcCountAfter, "Triggered more Full GCs than expected");
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}
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}
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}
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static public Map<Integer,String> largeMap;
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public static void main(String... args) throws Exception {
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if (args.length < 4) {
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println("usage: JNICriticalStressTest <duration sec> <alloc threads> <jni critical threads> <gc name>");
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exit(-1);
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}
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long durationSec = Long.parseLong(args[0]);
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int allocThreadNum = Integer.parseInt(args[1]);
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int jniCriticalThreadNum = Integer.parseInt(args[2]);
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StringBuilder OldGCName = new StringBuilder();
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switch (args[3]) {
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case "G1":
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OldGCName.append("G1 Old Generation");
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break;
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case "Parallel":
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OldGCName.append("PS MarkSweep");
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break;
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case "Serial":
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OldGCName.append("MarkSweepCompact");
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break;
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default:
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throw new RuntimeException("Unsupported GC selected");
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}
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List<GarbageCollectorMXBean> collectors = ManagementFactory.getGarbageCollectorMXBeans();
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for (int i = 0; i < collectors.size(); i++) {
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if (collectors.get(i).getName().contains(OldGCName.toString())) {
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collector = collectors.get(i);
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break;
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}
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}
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if (collector == null) {
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throw new RuntimeException(OldGCName.toString() + " not found");
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}
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println("Running for " + durationSec + " secs");
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largeMap = populateMap(LARGE_MAP_SIZE);
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// Start threads to allocate memory, this will trigger both GCLocker initiated
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// garbage collections (GCs) and regular GCs. Thus increasing the likelihood of
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// having different types of GCs happening concurrently with the System.gc call.
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println("Starting " + allocThreadNum + " allocating threads");
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for (int i = 0; i < allocThreadNum; i += 1) {
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new Thread(new AllocatingWorker()).start();
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}
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println("Starting " + jniCriticalThreadNum + " jni critical threads");
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for (int i = 0; i < jniCriticalThreadNum; i += 1) {
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new Thread(new JNICriticalWorker()).start();
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}
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new Thread(new SystemGCWorker()).start();
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long durationMS = (long) (1000 * durationSec);
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try {
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Thread.sleep(durationMS);
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} catch (InterruptedException e) {
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e.printStackTrace();
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exit(-1);
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}
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}
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}
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