| /* |
| * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.jfr.event.os; |
| |
| import java.util.List; |
| |
| import jdk.jfr.Recording; |
| import jdk.jfr.consumer.RecordedEvent; |
| import jdk.test.lib.jfr.EventNames; |
| import jdk.test.lib.jfr.Events; |
| |
| |
| /** |
| * @test |
| * @key jfr |
| * @requires vm.hasJFR |
| * @library /test/lib |
| * @run main/othervm jdk.jfr.event.os.TestCPULoad |
| */ |
| public class TestCPULoad { |
| private final static String EVENT_NAME = EventNames.CPULoad; |
| |
| public static void main(String[] args) throws Throwable { |
| Recording recording = new Recording(); |
| recording.enable(EVENT_NAME); |
| recording.start(); |
| // Need to sleep so a time delta can be calculated |
| Thread.sleep(100); |
| recording.stop(); |
| |
| List<RecordedEvent> events = Events.fromRecording(recording); |
| if (events.isEmpty()) { |
| // CPU Load events are unreliable on Windows because |
| // the way processes are identified with perf. counters. |
| // See BUG 8010378. |
| // Workaround is to detect Windows and allow |
| // test to pass if events are missing. |
| if (isWindows()) { |
| return; |
| } |
| throw new AssertionError("Expected at least one event"); |
| } |
| for (RecordedEvent event : events) { |
| System.out.println("Event: " + event); |
| for (String loadName : loadNames) { |
| Events.assertField(event, loadName).atLeast(0.0f).atMost(1.0f); |
| } |
| } |
| } |
| |
| private static final String[] loadNames = {"jvmUser", "jvmSystem", "machineTotal"}; |
| |
| private static boolean isWindows() { |
| return System.getProperty("os.name").startsWith("Windows"); |
| } |
| } |