1 /* 2 * Copyright (c) 2018, 2019, 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.recorder; 27 28 import java.io.IOException; 29 import java.nio.file.Files; 30 import java.nio.file.LinkOption; 31 import java.nio.file.Path; 32 33 import jdk.jfr.Configuration; 34 import jdk.jfr.Recording; 35 36 /* 37 * @test TestStartStopRecording 38 * 39 * @key jfr 40 * @run main/othervm -XX:+PrintJFRLog jdk.jfr.api.recorder.TestStartStopRecording 41 */ 42 public class TestStartStopRecording { 43 44 public static void main(String... args) throws Exception { 45 Configuration defaultConfig = Configuration.getConfiguration("default"); 46 // Memory 47 Recording inMemory = new Recording(defaultConfig); 48 inMemory.setToDisk(false); 49 50 inMemory.start(); 51 52 Path memoryFile = Files.createTempFile("memory-recording", ".jfr"); 53 inMemory.dump(memoryFile); 54 assertValid(memoryFile, "Not a valid memory file."); 55 inMemory.stop(); 56 inMemory.close(); 57 // Disk 58 Recording toDisk = new Recording(defaultConfig); 59 toDisk.setToDisk(true); 60 61 toDisk.start(); 62 toDisk.stop(); 63 Path diskFile = Files.createTempFile("disk-recording", ".jfr"); 64 toDisk.dump(diskFile); 65 assertValid(diskFile, "Not a valid disk file."); 66 toDisk.close(); 67 } 68 69 private static void assertValid(Path path, String message) throws IOException { 70 if (!Files.exists(path, LinkOption.NOFOLLOW_LINKS)) { 71 throw new AssertionError(message + " Could not find file " + path); 72 } 73 if (Files.size(path) == 0) { 74 throw new AssertionError(message + " File size = 0 for " + path); 75 } 76 } 77 }