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.flightrecorder; 27 28 import static jdk.test.lib.Asserts.assertEquals; 29 import static jdk.test.lib.Asserts.assertFalse; 30 import static jdk.test.lib.Asserts.assertTrue; 31 32 import java.util.List; 33 34 import jdk.jfr.FlightRecorder; 35 import jdk.jfr.Recording; 36 37 /** 38 * @test 39 * @key jfr 40 * @requires vm.hasJFR 41 * @library /test/lib 42 * @run main/othervm jdk.jfr.api.flightrecorder.TestGetRecordings 43 */ 44 public class TestGetRecordings { 45 46 public static void main(String[] args) throws Throwable { 47 FlightRecorder recorder = FlightRecorder.getFlightRecorder(); 48 49 // Recording should be empty at start. 50 List<Recording> recordings = recorder.getRecordings(); 51 assertTrue(recordings.isEmpty(), "recordings should be empty at start"); 52 53 // Create first recording 54 Recording r1 = new Recording(); 55 recordings = recorder.getRecordings(); 56 assertEquals(recordings.size(), 1, "Expected 1 recording"); 57 assertTrue(recordings.contains(r1), "r1 should be in list"); 58 59 // Create second recording 60 Recording r2 = new Recording(); 61 recordings = recorder.getRecordings(); 62 assertEquals(recordings.size(), 2, "Expected 2 recordings"); 63 assertTrue(recordings.contains(r2), "r2 should be in list"); 64 assertTrue(recordings.contains(r1), "r1 should still be in list"); 65 66 // Close first recording 67 r1.close(); 68 recordings = recorder.getRecordings(); 69 assertEquals(recordings.size(), 1, "Expected 1 remaining recording"); 70 assertTrue(recordings.contains(r2), "r2 should still be in list"); 71 assertFalse(recordings.contains(r1), "r1 should be removed"); 72 73 // Close second recording 74 r2.close(); 75 recordings = recorder.getRecordings(); 76 assertTrue(recordings.isEmpty(), "recordings should be empty after close"); 77 78 // Create recording with new Recording() 79 Recording r3 = new Recording(); 80 recordings = recorder.getRecordings(); 81 assertTrue(recordings.contains(r3 ), "new Recording() should be in list"); 82 r3.close(); 83 } 84 85 }