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.jfr.CommonHelper;
  34 import jdk.test.lib.jfr.VoidFunction;
  35 
  36 /**
  37  * @test
  38  * @summary Test Recording state
  39  * @key jfr
  40  *
  41  * @library /lib /
  42  * @run main/othervm jdk.jfr.api.recording.state.TestStateScheduleStart
  43  */
  44 public class TestStateScheduleStart {
  45 
  46     public static void main(String[] args) throws Throwable {
  47         Recording r = new Recording();
  48         CommonHelper.verifyRecordingState(r, RecordingState.NEW);
  49 
  50         Instant start = Instant.now();
  51         r.scheduleStart(Duration.ofMillis(2000));
  52 
  53         System.out.println("Wait for recording to start: " + start);
  54         CommonHelper.waitForRecordingState(r, RecordingState.RUNNING);
  55 
  56         // Duration should be about 2000 ms.
  57         // Test servers vary too much in performance to make an accurate check.
  58         // We only check that we don't time out after 20 seconds.
  59         Instant started = Instant.now();
  60         long millis = Duration.between(start, started).toMillis();
  61         System.out.println("Recording started at " + started + ". Delta millis=" + millis + ", expeced about 2000");
  62 
  63         verifyIllegalState(() -> r.start(), "double start()");
  64         r.stop();
  65         CommonHelper.verifyRecordingState(r, RecordingState.STOPPED);
  66         r.close();
  67         CommonHelper.verifyRecordingState(r, RecordingState.CLOSED);
  68     }
  69 
  70     private static void verifyIllegalState(VoidFunction f, String msg) throws Throwable {
  71         CommonHelper.verifyException(f, msg, IllegalStateException.class);
  72     }
  73 }