8236938: [TESTBUG] JFR event MetaspaceAllocationFailure is not tested

New test for MetaspaceAllocationFailure

Reviewed-by: hseigel, stuefe

test/hotspot/jtreg/runtime/Metaspace/FragmentMetaspace.java

@@ -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 @@ public class FragmentMetaspace {
         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

test/jdk/jdk/jfr/event/runtime/TestMetaspaceAllocationFailure.java

@@ -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());
+        }
+    }
+}

test/lib/jdk/test/lib/classloader/GeneratingCompilingClassLoader.java

@@ -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 @@ import javax.tools.ToolProvider;
  * 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 class GeneratedClassLoader extends ClassLoader {
      * 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 @@ public class GeneratedClassLoader extends ClassLoader {
     private JavaCompiler javac;
     private String nameBase;
 
-    public GeneratedClassLoader() {
+    public GeneratingCompilingClassLoader() {
         javac = ToolProvider.getSystemJavaCompiler();
         nameBase = "TestSimpleClass";
     }