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