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.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 import jdk.test.lib.Utils; 36 37 /** 38 * @test TestStartStopRecording 39 * 40 * @key jfr 41 * @requires vm.hasJFR 42 * @library /test/lib 43 * @run main/othervm jdk.jfr.api.recorder.TestStartStopRecording 44 */ 45 public class TestStartStopRecording { 46 47 public static void main(String... args) throws Exception { 48 Configuration defaultConfig = Configuration.getConfiguration("default"); 49 // Memory 50 Recording inMemory = new Recording(defaultConfig); 51 inMemory.setToDisk(false); 52 53 inMemory.start(); 54 55 Path memoryFile = Utils.createTempFile("start-stop-memory-recording", ".jfr"); 56 inMemory.dump(memoryFile); 57 assertValid(memoryFile, "Not a valid memory file."); 58 inMemory.stop(); 59 inMemory.close(); 60 // Disk 61 Recording toDisk = new Recording(defaultConfig); 62 toDisk.setToDisk(true); 63 64 toDisk.start(); 65 toDisk.stop(); 66 Path diskFile = Utils.createTempFile("start-stop-disk-recording", ".jfr"); 67 toDisk.dump(diskFile); 68 assertValid(diskFile, "Not a valid disk file."); 69 toDisk.close(); 70 } 71 72 private static void assertValid(Path path, String message) throws IOException { 73 if (!Files.exists(path, LinkOption.NOFOLLOW_LINKS)) { 74 throw new AssertionError(message + " Could not find file " + path); 75 } 76 if (Files.size(path) == 0) { 77 throw new AssertionError(message + " File size = 0 for " + path); 78 } 79 } 80 }