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8236938: [TESTBUG] JFR event MetaspaceAllocationFailure is not tested
New test for MetaspaceAllocationFailure

Reviewed-by: hseigel, stuefe
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Mikhailo Seledtsov committed Mar 2, 2020
1 parent 96b61b8 commit 35ee1cb2b38374da4ede3e38b1358b8ba733bd80
@@ -23,13 +23,14 @@

/**
* @test
* @library /runtime/testlibrary
* @library /test/lib
* @modules java.base/jdk.internal.misc
* @modules java.compiler
* @run main/othervm/timeout=200 -Xmx1g FragmentMetaspace
*/

import java.io.IOException;
import jdk.test.lib.classloader.GeneratingCompilingClassLoader;

/**
* Test that tries to fragment the native memory used by class loaders.
@@ -53,7 +54,7 @@ private static void runGrowing(long time, int iterations) {
long startTime = System.currentTimeMillis();
for (int i = 0; System.currentTimeMillis() < startTime + time && i < iterations; ++i) {
try {
GeneratedClassLoader gcl = new GeneratedClassLoader();
GeneratingCompilingClassLoader gcl = new GeneratingCompilingClassLoader();

// getGeneratedClasses throws a RuntimeException in cases where
// the javac exit code is not 0. If the original reason for the exception is
@@ -0,0 +1,68 @@
/*
* Copyright (c) 2020, 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
* @summary Test jdk.MetaspaceAllocationFailure event
* @library /test/lib
* @modules java.base/jdk.internal.misc java.compiler
* @run main/othervm -Xmx1G -XX:MaxMetaspaceSize=200M
* -XX:StartFlightRecording -Xshare:off
* jdk.jfr.event.runtime.TestMetaspaceAllocationFailure
* @run main/othervm -Xmx1G -XX:CompressedClassSpaceSize=200M
* -XX:StartFlightRecording -Xshare:off
* jdk.jfr.event.runtime.TestMetaspaceAllocationFailure
*/
package jdk.jfr.event.runtime;

import java.util.concurrent.atomic.AtomicBoolean;
import jdk.jfr.consumer.RecordingStream;
import jdk.test.lib.classloader.GeneratingCompilingClassLoader;
import jdk.test.lib.Asserts;


public class TestMetaspaceAllocationFailure {
public static void main(String... args) throws Exception {
AtomicBoolean eventArrived = new AtomicBoolean(false);
try (RecordingStream r = new RecordingStream()) {
r.onEvent("jdk.MetaspaceAllocationFailure", e -> eventArrived.set(true));
r.startAsync();

try {
while (!eventArrived.get()) {
GeneratingCompilingClassLoader cl = new GeneratingCompilingClassLoader();
cl.getGeneratedClasses(50, 20);
Thread.sleep(100);
System.out.println("Iteration");
}
System.gc();
System.out.println("main(): Event arrived");
} catch (OutOfMemoryError e) {
System.gc();
System.out.println("main(): OutOfMemoryError (expected): " + e.getMessage());
}

Asserts.assertTrue(eventArrived.get());
}
}
}
@@ -1,5 +1,5 @@
/*
* Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2013, 2020, 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
@@ -20,6 +20,7 @@
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package jdk.test.lib.classloader;

import java.io.DataInputStream;
import java.io.ByteArrayOutputStream;
@@ -38,7 +39,7 @@
* Some efforts are made to make the class instances unique and of not insignificant
* size.
*/
public class GeneratedClassLoader extends ClassLoader {
public class GeneratingCompilingClassLoader extends ClassLoader {
/**
* Holds a pair of class bytecodes and class name (for use with defineClass).
*/
@@ -59,7 +60,7 @@ public GeneratedClass(byte[] bytes, String name) {
* the generated classes.
*/
private static boolean deleteFiles = Boolean.parseBoolean(
System.getProperty("GeneratedClassLoader.deleteFiles", "true"));
System.getProperty("GeneratingCompilingClassLoader.deleteFiles", "true"));

private static String bigstr =
"Lorem ipsum dolor sit amet, consectetur adipiscing elit. "
@@ -86,7 +87,7 @@ private static int getNextCount() {
private JavaCompiler javac;
private String nameBase;

public GeneratedClassLoader() {
public GeneratingCompilingClassLoader() {
javac = ToolProvider.getSystemJavaCompiler();
nameBase = "TestSimpleClass";
}

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