1 /* 2 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.event.runtime; 27 28 import java.nio.ByteBuffer; 29 import java.util.List; 30 31 import jdk.internal.misc.VM; 32 33 import jdk.jfr.Recording; 34 import jdk.jfr.consumer.RecordedEvent; 35 import jdk.test.lib.Asserts; 36 import jdk.test.lib.jfr.EventNames; 37 import jdk.test.lib.jfr.Events; 38 39 /** 40 * @test 41 * @key jfr 42 * @requires vm.hasJFR 43 * @library /test/lib 44 * @modules java.base/jdk.internal.misc 45 * @run main/othervm -XX:MaxDirectMemorySize=128m jdk.jfr.event.runtime.TestDirectMemoryStatisticsEvent 46 * @run main/othervm jdk.jfr.event.runtime.TestDirectMemoryStatisticsEvent 47 */ 48 public class TestDirectMemoryStatisticsEvent { 49 50 private static final String EVENT_PATH = EventNames.DirectMemoryStatistics; 51 52 public static void main(String[] args) throws Throwable { 53 try (Recording recording = new Recording()) { 54 recording.enable(EVENT_PATH); 55 recording.start(); 56 int rounds = 16; 57 int size = 1 * 1024 * 1024; // 1M 58 for (int i = 0; i < rounds; i++) { 59 ByteBuffer.allocateDirect(size); 60 } 61 recording.stop(); 62 63 List<RecordedEvent> events = Events.fromRecording(recording); 64 Events.hasEvents(events); 65 66 long count = 0; 67 long totalCapacity = 0; 68 long memoryUsed = 0; 69 70 for (RecordedEvent event : events) { 71 System.out.println(event); 72 Asserts.assertTrue(Events.isEventType(event, EVENT_PATH), "Wrong event type"); 73 count = Math.max(count, Events.assertField(event, "count").getValue()); 74 totalCapacity = Math.max(totalCapacity, Events.assertField(event, "totalCapacity").getValue()); 75 memoryUsed = Math.max(memoryUsed, Events.assertField(event, "memoryUsed").getValue()); 76 Asserts.assertEquals(VM.maxDirectMemory(), Events.assertField(event, "maxCapacity").getValue()); 77 } 78 79 Asserts.assertGreaterThanOrEqual(count, (long)rounds, "Too few count in statistics event"); 80 Asserts.assertGreaterThanOrEqual(totalCapacity, (long)(rounds * size), "Too few totalCapacity in statistics event"); 81 Asserts.assertGreaterThanOrEqual(memoryUsed, totalCapacity, "Too few memoryUsed in statistics event"); 82 } 83 } 84 }