1 /* 2 * Copyright (c) 2017, 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.event.sampling; 27 28 import java.io.File; 29 import java.nio.file.Paths; 30 import java.time.Duration; 31 32 import jdk.jfr.FlightRecorder; 33 import jdk.jfr.Recording; 34 import jdk.jfr.consumer.RecordedEvent; 35 import jdk.jfr.consumer.RecordingFile; 36 import jdk.test.lib.jfr.EventNames; 37 import jdk.test.lib.process.OutputAnalyzer; 38 import jdk.test.lib.process.ProcessTools; 39 40 /* 41 * @test 42 * @key jfr 43 * @requires vm.hasJFR 44 * @library /test/lib 45 * @modules java.base/jdk.internal.misc 46 * @run main/native jdk.jfr.event.sampling.TestNative 47 */ 48 public class TestNative { 49 50 public final static String EVENT_SETTINGS_FILE = System.getProperty("test.src", ".") + File.separator + "sampling.jfc"; 51 public final static String JFR_DUMP = "samples.jfr"; 52 public final static String EXCEPTION = "No native samples found"; 53 public final static String NATIVE_EVENT = EventNames.NativeMethodSample; 54 public static Recording recording; 55 56 public static native void longTime(); 57 58 public static void main(String[] args) throws Exception { 59 String lib = System.getProperty("test.nativepath"); 60 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, "-Djava.library.path=" + lib, "jdk.jfr.event.sampling.TestNative$Test"); 61 62 OutputAnalyzer output = ProcessTools.executeProcess(pb); 63 output.shouldHaveExitValue(0); 64 output.stdoutShouldNotContain("No native samples found"); 65 } 66 67 static class Test { 68 public static void main(String[] args) throws Exception { 69 System.loadLibrary("TestNative"); 70 FlightRecorder.getFlightRecorder(); 71 recording = new Recording(); 72 recording.setToDisk(true); 73 recording.setDestination(Paths.get(JFR_DUMP)); 74 recording.enable(NATIVE_EVENT).withPeriod(Duration.ofMillis(10)); 75 recording.start(); 76 77 longTime(); 78 79 recording.stop(); 80 recording.close(); 81 82 try (RecordingFile rf = new RecordingFile(Paths.get(JFR_DUMP))) { 83 while (rf.hasMoreEvents()) { 84 RecordedEvent re = rf.readEvent(); 85 if (re.getEventType().getName().equals(NATIVE_EVENT)) { 86 return; 87 } 88 } 89 } 90 91 throw new Exception("No native samples found"); 92 } 93 } 94 }