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.recording.state;
  27 
  28 import java.time.Duration;
  29 import java.time.Instant;
  30 
  31 import jdk.jfr.Recording;
  32 import jdk.jfr.RecordingState;
  33 import jdk.test.lib.Asserts;
  34 import jdk.test.lib.jfr.CommonHelper;
  35 import jdk.test.lib.jfr.VoidFunction;
  36 
  37 /*
  38  * @test
  39  * @summary Test Recording state
  40  * @key jfr
  41  * @library /test/lib
  42  * @run main/othervm jdk.jfr.api.recording.state.TestStateDuration
  43  */
  44 public class TestStateDuration {
  45 
  46     public static void main(String[] args) throws Throwable {
  47         Duration duration = Duration.ofSeconds(2);
  48         Recording r = new Recording();
  49         r.setDuration(duration);
  50         CommonHelper.verifyRecordingState(r, RecordingState.NEW);
  51         Instant start = Instant.now();
  52         System.out.println("Recording with duration " + duration + " started at " + start);
  53         r.start();
  54 
  55         // Wait for recording to stop automatically
  56         System.out.println("Waiting for recording to reach STOPPED state");
  57         CommonHelper.waitForRecordingState(r, RecordingState.STOPPED);
  58         Instant stop = Instant.now();
  59         Duration measuredDuration = Duration.between(start, stop);
  60         System.out.println("Recording stopped at " + stop + ". Measured duration " + measuredDuration);
  61         // Timer task uses System.currentMillis, and java.time uses other source.
  62         Duration deltaDueToClockNotInSync = Duration.ofMillis(100);
  63         Asserts.assertGreaterThan(measuredDuration.plus(deltaDueToClockNotInSync), duration);
  64         verifyIllegalState(() -> r.start(), "start() after stop()");
  65         r.close();
  66         CommonHelper.verifyRecordingState(r, RecordingState.CLOSED);
  67     }
  68 
  69     private static void verifyIllegalState(VoidFunction f, String msg) throws Throwable {
  70         CommonHelper.verifyException(f, msg, IllegalStateException.class);
  71     }
  72 }