1 /* 2 * Copyright (c) 2013, 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 package jdk.test.lib.jfr; 26 27 import static jdk.test.lib.Asserts.assertEquals; 28 import static jdk.test.lib.Asserts.fail; 29 30 import java.io.IOException; 31 import java.nio.file.Files; 32 import java.nio.file.Path; 33 import java.util.List; 34 35 import jdk.jfr.Recording; 36 import jdk.jfr.RecordingState; 37 import jdk.jfr.consumer.RecordedEvent; 38 import jdk.jfr.consumer.RecordingFile; 39 import jdk.test.lib.Asserts; 40 import jdk.test.lib.Utils; 41 42 43 /** 44 * Common helper class. 45 */ 46 public final class CommonHelper { 47 48 private static RecordedEvent timeStampCounterEvent; 49 50 public static void verifyException(VoidFunction f, String msg, Class<? extends Throwable> expectedException) throws Throwable { 51 try { 52 f.run(); 53 } catch (Throwable t) { 54 if (expectedException.isAssignableFrom(t.getClass())) { 55 return; 56 } 57 t.printStackTrace(); 58 assertEquals(t.getClass(), expectedException, "Wrong exception class"); 59 } 60 fail("Missing Exception for: " + msg); 61 } 62 63 public static Recording verifyExists(long recId, List<Recording> recordings) { 64 for (Recording r : recordings) { 65 if (recId == r.getId()) { 66 return r; 67 } 68 } 69 Asserts.fail("Recording not found, id=" + recId); 70 return null; 71 } 72 73 74 public static void waitForRecordingState(Recording r, RecordingState expectedState) throws Exception { 75 while (r.getState() != expectedState) { 76 Thread.sleep(20); 77 } 78 } 79 80 public static void verifyRecordingState(Recording r, RecordingState expectedState) throws Exception { 81 assertEquals(expectedState, r.getState(), "Wrong state"); 82 } 83 84 public static boolean hasFastTimeEnabled() throws Exception { 85 return getTimeStampCounterEvent().getValue("fastTimeEnabled"); 86 } 87 88 private synchronized static RecordedEvent getTimeStampCounterEvent() throws IOException, Exception { 89 if (timeStampCounterEvent == null) { 90 try (Recording r = new Recording()) { 91 r.enable(EventNames.CPUTimeStampCounter); 92 r.start(); 93 r.stop(); 94 Path p = Utils.createTempFile("timestamo", ".jfr"); 95 r.dump(p); 96 List<RecordedEvent> events = RecordingFile.readAllEvents(p); 97 Files.deleteIfExists(p); 98 if (events.isEmpty()) { 99 throw new Exception("Could not locate CPUTimeStampCounter event"); 100 } 101 timeStampCounterEvent = events.get(0); 102 } 103 } 104 return timeStampCounterEvent; 105 } 106 107 public static void waitForSystemCurrentMillisToChange() { 108 long t = System.currentTimeMillis(); 109 while (t == System.currentTimeMillis()) { 110 try { 111 Thread.sleep(2); 112 } catch (InterruptedException e) { 113 throw new Error("Sleep interupted", e); 114 } 115 } 116 } 117 }