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.time.Duration; 29 import java.util.List; 30 31 import jdk.jfr.Event; 32 import jdk.jfr.Recording; 33 import jdk.jfr.consumer.RecordedEvent; 34 import jdk.test.lib.Asserts; 35 import jdk.test.lib.jfr.Events; 36 37 /** 38 * @test 39 * @summary Test event threshold. 40 * @key jfr 41 * 42 * @library /lib / 43 * @run main/othervm jdk.jfr.api.recording.event.TestThreshold 44 */ 45 public class TestThreshold { 46 47 public static void main(String[] args) throws Throwable { 48 Recording r = new Recording(); 49 50 r.start(); 51 r.enable(MyEvent.class).withThreshold(Duration.ofMillis(500)); 52 createEvent(0, 100); 53 createEvent(1, 600); 54 createEvent(2, 100); 55 r.stop(); 56 57 List<RecordedEvent> events = Events.fromRecording(r); 58 Asserts.assertTrue(1 <= events.size(), "Should get at most 1 event"); 59 r.close(); 60 } 61 62 private static void createEvent(int id, long duration) throws Exception { 63 MyEvent event = new MyEvent(id); 64 long start = System.currentTimeMillis(); 65 66 event.begin(); 67 sleepUntil(start + duration); 68 event.end(); 69 70 long actualDuration = System.currentTimeMillis() - start; 71 System.out.printf("targetDuration=%d, actualDuration=%d, shouldCommit=%b%n", 72 duration, actualDuration, event.shouldCommit()); 73 event.commit(); 74 } 75 76 private static void sleepUntil(long endTime) throws Exception { 77 long sleepTime = endTime - System.currentTimeMillis(); 78 while(sleepTime > 0) { 79 Thread.sleep(sleepTime); 80 sleepTime = endTime - System.currentTimeMillis(); 81 } 82 } 83 84 static class MyEvent extends Event { 85 public int id; 86 public MyEvent(int id) { 87 this.id = id; 88 } 89 } 90 91 }