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