--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/event/gc/collection/YoungGarbageCollectionEvent.java Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2013, 2018, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package jdk.jfr.event.gc.collection;
+
+import static jdk.test.lib.Asserts.assertGreaterThan;
+import static jdk.test.lib.Asserts.assertTrue;
+
+import java.time.Duration;
+import java.time.Instant;
+
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.test.lib.jfr.Events;
+import jdk.test.lib.jfr.GCHelper;
+
+
+public class YoungGarbageCollectionEvent {
+
+ private static final String EVENT_NAME = GCHelper.event_young_garbage_collection;
+
+ public static void test() throws Exception {
+ Recording recording = new Recording();
+ recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
+ recording.start();
+ triggerGC();
+ recording.stop();
+
+ boolean isAnyFound = false;
+ for (RecordedEvent event : Events.fromRecording(recording)) {
+ if (!EVENT_NAME.equals(event.getEventType().getName())) {
+ continue;
+ }
+ System.out.println("Event: " + event);
+ isAnyFound = true;
+ Events.assertField(event, "gcId").atLeast(0);
+ Events.assertField(event, "tenuringThreshold").atLeast(1);
+
+ Instant startTime = event.getStartTime();
+ Instant endTime = event.getEndTime();
+ Duration duration = event.getDuration();
+ assertGreaterThan(startTime, Instant.EPOCH, "startTime should be at least 0");
+ assertGreaterThan(endTime, Instant.EPOCH, "endTime should be at least 0");
+ // TODO: Maybe we should accept duration of 0, but old test did not.
+ assertGreaterThan(duration, Duration.ZERO, "Duration should be above 0");
+ assertGreaterThan(endTime, startTime, "End time should be after start time");
+ }
+ assertTrue(isAnyFound, "No matching event found");
+ }
+
+ public static byte[] garbage;
+ private static void triggerGC() {
+ for (int i = 0; i < 3072; i++) {
+ garbage = new byte[1024];
+ }
+ }
+}