--- a/hotspot/make/test/JtregNative.gmk Wed Apr 05 14:21:58 2017 +0200
+++ b/hotspot/make/test/JtregNative.gmk Tue Apr 18 11:01:09 2017 +0200
@@ -43,6 +43,7 @@
# Add more directories here when needed.
BUILD_HOTSPOT_JTREG_NATIVE_SRC += \
+ $(HOTSPOT_TOPDIR)/test/gc/stress/gclocker \
$(HOTSPOT_TOPDIR)/test/native_sanity \
$(HOTSPOT_TOPDIR)/test/runtime/jni/8025979 \
$(HOTSPOT_TOPDIR)/test/runtime/jni/8033445 \
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/stress/gclocker/TestGCLocker.java Tue Apr 18 11:01:09 2017 +0200
@@ -0,0 +1,224 @@
+/*
+ * Copyright (c) 2017, 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.
+ *
+ */
+
+// Stress the GC locker by calling GetPrimitiveArrayCritical while
+// concurrently filling up old gen.
+
+import java.lang.management.MemoryPoolMXBean;
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryUsage;
+import java.nio.ByteBuffer;
+import java.util.ArrayDeque;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Queue;
+
+final class ThreadUtils {
+ public static void sleep(long durationMS) {
+ try {
+ Thread.sleep(durationMS);
+ } catch (Exception e) {
+ }
+ }
+}
+
+class Filler {
+ private static final int SIZE = 250000;
+
+ private int[] i1 = new int[SIZE];
+ private int[] i2 = new int[SIZE];
+ private short[] s1 = new short[SIZE];
+ private short[] s2 = new short[SIZE];
+
+ private Map<Object, Object> map = new HashMap<>();
+
+ public Filler() {
+ for (int i = 0; i < 10000; i++) {
+ map.put(new Object(), new Object());
+ }
+ }
+}
+
+class Exitable {
+ private volatile boolean shouldExit = false;
+
+ protected boolean shouldExit() {
+ return shouldExit;
+ }
+
+ public void exit() {
+ shouldExit = true;
+ }
+}
+
+class MemoryWatcher {
+ private MemoryPoolMXBean bean;
+ private final int thresholdPromille = 750;
+ private final int criticalThresholdPromille = 800;
+ private final int minGCWaitMS = 1000;
+ private final int minFreeWaitElapsedMS = 30000;
+ private final int minFreeCriticalWaitMS = 500;
+
+ private int lastUsage = 0;
+ private long lastGCDetected = System.currentTimeMillis();
+ private long lastFree = System.currentTimeMillis();
+
+ public MemoryWatcher(String mxBeanName) {
+ List<MemoryPoolMXBean> memoryBeans = ManagementFactory.getMemoryPoolMXBeans();
+ for (MemoryPoolMXBean bean : memoryBeans) {
+ if (bean.getName().equals(mxBeanName)) {
+ this.bean = bean;
+ break;
+ }
+ }
+ }
+
+ private int getMemoryUsage() {
+ if (bean == null) {
+ Runtime r = Runtime.getRuntime();
+ float free = (float) r.freeMemory() / r.maxMemory();
+ return Math.round((1 - free) * 1000);
+ } else {
+ MemoryUsage usage = bean.getUsage();
+ float used = (float) usage.getUsed() / usage.getCommitted();
+ return Math.round(used * 1000);
+ }
+ }
+
+ public synchronized boolean shouldFreeUpSpace() {
+ int usage = getMemoryUsage();
+ long now = System.currentTimeMillis();
+
+ boolean detectedGC = false;
+ if (usage < lastUsage) {
+ lastGCDetected = now;
+ detectedGC = true;
+ }
+
+ lastUsage = usage;
+
+ long elapsed = now - lastFree;
+ long timeSinceLastGC = now - lastGCDetected;
+
+ if (usage > criticalThresholdPromille && elapsed > minFreeCriticalWaitMS) {
+ lastFree = now;
+ return true;
+ } else if (usage > thresholdPromille && !detectedGC) {
+ if (elapsed > minFreeWaitElapsedMS || timeSinceLastGC > minGCWaitMS) {
+ lastFree = now;
+ return true;
+ }
+ }
+
+ return false;
+ }
+}
+
+class MemoryUser extends Exitable implements Runnable {
+ private final Queue<Filler> cache = new ArrayDeque<Filler>();
+ private final MemoryWatcher watcher;
+
+ private void load() {
+ if (watcher.shouldFreeUpSpace()) {
+ int toRemove = cache.size() / 5;
+ for (int i = 0; i < toRemove; i++) {
+ cache.remove();
+ }
+ }
+ cache.add(new Filler());
+ }
+
+ public MemoryUser(String mxBeanName) {
+ watcher = new MemoryWatcher(mxBeanName);
+ }
+
+ @Override
+ public void run() {
+ for (int i = 0; i < 200; i++) {
+ load();
+ }
+
+ while (!shouldExit()) {
+ load();
+ }
+ }
+}
+
+class GCLockerStresser extends Exitable implements Runnable {
+ static native void fillWithRandomValues(byte[] array);
+
+ @Override
+ public void run() {
+ byte[] array = new byte[1024 * 1024];
+ while (!shouldExit()) {
+ fillWithRandomValues(array);
+ }
+ }
+}
+
+public class TestGCLocker {
+ private static Exitable startGCLockerStresser(String name) {
+ GCLockerStresser task = new GCLockerStresser();
+
+ Thread thread = new Thread(task);
+ thread.setName(name);
+ thread.setPriority(Thread.MIN_PRIORITY);
+ thread.start();
+
+ return task;
+ }
+
+ private static Exitable startMemoryUser(String mxBeanName) {
+ MemoryUser task = new MemoryUser(mxBeanName);
+
+ Thread thread = new Thread(task);
+ thread.setName("Memory User");
+ thread.start();
+
+ return task;
+ }
+
+ public static void main(String[] args) {
+ System.loadLibrary("TestGCLocker");
+
+ long durationMinutes = args.length > 0 ? Long.parseLong(args[0]) : 5;
+ String mxBeanName = args.length > 1 ? args[1] : null;
+
+ long startMS = System.currentTimeMillis();
+
+ Exitable stresser1 = startGCLockerStresser("GCLockerStresser1");
+ Exitable stresser2 = startGCLockerStresser("GCLockerStresser2");
+ Exitable memoryUser = startMemoryUser(mxBeanName);
+
+ long durationMS = durationMinutes * 60 * 1000;
+ while ((System.currentTimeMillis() - startMS) < durationMS) {
+ ThreadUtils.sleep(10 * 1010);
+ }
+
+ stresser1.exit();
+ stresser2.exit();
+ memoryUser.exit();
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/stress/gclocker/TestGCLockerWithCMS.java Tue Apr 18 11:01:09 2017 +0200
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2017, 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 TestGCLockerWithCMS
+ * @key gc
+ * @requires vm.gc.ConcMarkSweep
+ * @summary Stress CMS' GC locker by calling GetPrimitiveArrayCritical while concurrently filling up old gen.
+ * @run main/native/othervm/timeout=200 -Xlog:gc*=info -Xms1500m -Xmx1500m -XX:+UseConcMarkSweepGC TestGCLockerWithCMS
+ */
+public class TestGCLockerWithCMS {
+ public static void main(String[] args) {
+ String[] testArgs = {"2", "CMS Old Gen"};
+ TestGCLocker.main(testArgs);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/stress/gclocker/TestGCLockerWithG1.java Tue Apr 18 11:01:09 2017 +0200
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2017, 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 TestGCLockerWithG1
+ * @key gc
+ * @requires vm.gc.G1
+ * @summary Stress G1's GC locker by calling GetPrimitiveArrayCritical while concurrently filling up old gen.
+ * @run main/native/othervm/timeout=200 -Xlog:gc*=info -Xms1500m -Xmx1500m -XX:+UseG1GC TestGCLockerWithG1
+ */
+public class TestGCLockerWithG1 {
+ public static void main(String[] args) {
+ String[] testArgs = {"2", "G1 Old Gen"};
+ TestGCLocker.main(testArgs);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/stress/gclocker/TestGCLockerWithParallel.java Tue Apr 18 11:01:09 2017 +0200
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2017, 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 TestGCLockerWithParallel
+ * @key gc
+ * @requires vm.gc.Parallel
+ * @summary Stress Parallel's GC locker by calling GetPrimitiveArrayCritical while concurrently filling up old gen.
+ * @run main/native/othervm/timeout=200 -Xlog:gc*=info -Xms1500m -Xmx1500m -XX:+UseParallelGC TestGCLockerWithParallel
+ */
+public class TestGCLockerWithParallel {
+ public static void main(String[] args) {
+ String[] testArgs = {"2", "PS Old Gen"};
+ TestGCLocker.main(testArgs);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/stress/gclocker/TestGCLockerWithSerial.java Tue Apr 18 11:01:09 2017 +0200
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2017, 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 TestGCLockerWithSerial
+ * @key gc
+ * @requires vm.gc.Serial
+ * @summary Stress Serial's GC locker by calling GetPrimitiveArrayCritical while concurrently filling up old gen.
+ * @run main/native/othervm/timeout=200 -Xlog:gc*=info -Xmx1500m -Xmx1500m -XX:+UseSerialGC TestGCLockerWithSerial
+ */
+public class TestGCLockerWithSerial {
+ public static void main(String[] args) {
+ String[] testArgs = {"2", "Tenured Gen"};
+ TestGCLocker.main(testArgs);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/stress/gclocker/libTestGCLocker.c Tue Apr 18 11:01:09 2017 +0200
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2017, 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.
+ */
+
+#include <jni.h>
+
+JNIEXPORT void JNICALL
+Java_GCLockerStresser_fillWithRandomValues(JNIEnv* env, jclass clz, jbyteArray arr) {
+ jsize size = (*env)->GetArrayLength(env, arr);
+ jbyte* p = (*env)->GetPrimitiveArrayCritical(env, arr, NULL);
+ jsize i;
+ for (i = 0; i < size; i++) {
+ p[i] = i % 128;
+ }
+ (*env)->ReleasePrimitiveArrayCritical(env, arr, p, 0);
+}