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.nio.file.Files; 29 import java.nio.file.Path; 30 import java.nio.file.Paths; 31 32 import jdk.jfr.Recording; 33 import jdk.jfr.consumer.RecordedEvent; 34 import jdk.test.lib.Asserts; 35 import jdk.test.lib.jfr.EventNames; 36 import jdk.test.lib.jfr.Events; 37 38 /** 39 * @test 40 * @summary Enable/disable event by name during recording. 41 * @key jfr 42 * 43 * @library /lib / 44 * @run main/othervm jdk.jfr.api.recording.event.TestReEnableName 45 */ 46 public class TestReEnableName { 47 48 public static void main(String[] args) throws Throwable { 49 testRecordingWithEnabledEvent(EventNames.FileWrite, false); 50 testRecordingWithEnabledEvent(EventNames.FileWrite, true); 51 } 52 53 // Loop and enable/disable events. Create events each loop. 54 // Verify we only get events created during enabled. 55 private static void testRecordingWithEnabledEvent(String eventname, boolean enabled) throws Exception { 56 System.out.println("Testing enabled=" + enabled + " for " + eventname); 57 final Path pathDisabled = Paths.get(".", "disabled.txt").toAbsolutePath(); 58 final Path pathEnabled = Paths.get(".", "enabled.txt").toAbsolutePath(); 59 60 Recording r = new Recording(); 61 if (enabled) { 62 r.enable(eventname).withoutThreshold().withoutStackTrace(); 63 } else { 64 r.disable(eventname).withoutThreshold().withoutStackTrace(); 65 } 66 r.start(); 67 68 // We should only get events for pathEnabled, not for pathDisabled. 69 int countExpectedEvents = 0; 70 for (int i = 0; i < 10; ++i) { 71 if (enabled) { 72 Files.write(pathEnabled, "E".getBytes()); 73 ++countExpectedEvents; 74 r.disable(eventname); 75 } else { 76 Files.write(pathDisabled, "D".getBytes()); 77 r.enable(eventname); 78 } 79 enabled = !enabled; 80 } 81 r.stop(); 82 83 int countFoundEvents = 0; 84 for (RecordedEvent event : Events.fromRecording(r)) { 85 System.out.printf("Event %s%n", event); 86 Asserts.assertEquals(eventname, event.getEventType().getName(), "Wrong event type"); 87 String path = Events.assertField(event, "path").getValue(); 88 System.out.println(path); 89 if (pathEnabled.toString().equals(path)) { 90 ++countFoundEvents; 91 } 92 } 93 Asserts.assertGreaterThanOrEqual(countFoundEvents, countExpectedEvents, "Too few events found"); 94 95 r.close(); 96 } 97 }