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  *
  42  * @library /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 }