1 /* 2 * Copyright (c) 2018, 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.api.recording.event; 27 28 import java.io.IOException; 29 import java.time.Duration; 30 import java.time.Instant; 31 import java.util.List; 32 33 import jdk.jfr.FlightRecorder; 34 import jdk.jfr.Recording; 35 import jdk.jfr.consumer.RecordedEvent; 36 import jdk.test.lib.Asserts; 37 import jdk.test.lib.jfr.Events; 38 import jdk.test.lib.jfr.SimpleEvent; 39 40 /** 41 * @test 42 * @summary Test periodic setting that involves chunks. 43 * @key jfr 44 * 45 * @library /lib / 46 * @run main/othervm jdk.jfr.api.recording.event.TestChunkPeriod 47 */ 48 public class TestChunkPeriod { 49 50 // Margin of error is to avoid issues where JFR and 51 // System.currentMillis take the clock differently 52 private static final Duration MARGIN_OF_ERROR = Duration.ofNanos(1_000_000_000); // 1 s 53 54 public static void main(String[] args) throws Throwable { 55 FlightRecorder.addPeriodicEvent(SimpleEvent.class, () -> { 56 SimpleEvent pe = new SimpleEvent(); 57 pe.commit(); 58 }); 59 testBeginChunk(); 60 testEndChunk(); 61 testEveryChunk(); 62 } 63 64 private static void testBeginChunk() throws IOException { 65 Recording r = new Recording(); 66 r.enable(SimpleEvent.class).with("period", "beginChunk"); 67 Instant beforeStart = Instant.now().minus(MARGIN_OF_ERROR); 68 r.start(); 69 Instant afterStart = Instant.now().plus(MARGIN_OF_ERROR); 70 r.stop(); 71 List<RecordedEvent> events = Events.fromRecording(r); 72 Asserts.assertEquals(events.size(), 1, "Expected one event with beginChunk"); 73 RecordedEvent event = events.get(0); 74 Asserts.assertGreaterThanOrEqual(event.getStartTime(), beforeStart); 75 Asserts.assertGreaterThanOrEqual(afterStart, event.getStartTime()); 76 r.close(); 77 } 78 79 private static void testEndChunk() throws IOException { 80 Recording r = new Recording(); 81 r.enable(SimpleEvent.class).with("period", "endChunk"); 82 r.start(); 83 Instant beforeStop = Instant.now().minus(MARGIN_OF_ERROR); 84 r.stop(); 85 Instant afterStop = Instant.now().plus(MARGIN_OF_ERROR); 86 List<RecordedEvent> events = Events.fromRecording(r); 87 Asserts.assertEquals(events.size(), 1, "Expected one event with endChunk"); 88 RecordedEvent event = events.get(0); 89 Asserts.assertGreaterThanOrEqual(event.getStartTime(), beforeStop); 90 Asserts.assertGreaterThanOrEqual(afterStop, event.getStartTime()); 91 r.close(); 92 } 93 94 private static void testEveryChunk() throws IOException { 95 Recording r = new Recording(); 96 r.enable(SimpleEvent.class).with("period", "everyChunk"); 97 r.start(); 98 r.stop(); 99 List<RecordedEvent> events = Events.fromRecording(r); 100 Asserts.assertEquals(events.size(), 2, "Expected two events with everyChunk"); 101 r.close(); 102 } 103 }