1 /* 2 * Copyright (c) 2015, 2019, 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.jcmd; 27 28 import java.util.List; 29 30 import jdk.jfr.FlightRecorder; 31 import jdk.jfr.Recording; 32 import jdk.testlibrary.jfr.EventNames; 33 import jdk.testlibrary.jfr.JcmdAsserts; 34 import jdk.testlibrary.jfr.JcmdHelper; 35 36 37 /* 38 * @test 39 * @summary Start a recording with or without path-to-gc-roots 40 * @library /lib/testlibrary 41 * @key jfr 42 * 43 * @run main/othervm jdk.jfr.jcmd.TestJcmdStartPathToGCRoots 44 */ 45 public class TestJcmdStartPathToGCRoots { 46 47 public static void main(String[] args) throws Exception { 48 49 JcmdHelper.jcmd("JFR.start", "path-to-gc-roots=true"); 50 assertCutoff("infinity", "Expected cutoff to be '0 ns' wuth -XX:StartFlightRecording=path-to-gc-roots=true"); 51 closeRecording(); 52 53 JcmdHelper.jcmd("JFR.start", "path-to-gc-roots=false"); 54 assertCutoff("0 ns", "Expected cutoff to be '0 ns' with -XX:StartFlightRecording=path-to-gc-roots=false"); 55 closeRecording(); 56 57 JcmdHelper.jcmd("JFR.start"); 58 assertCutoff("0 ns", "Expected cutoff to be '0 ns' with -XX:StartFlightRecording="); 59 closeRecording(); 60 } 61 62 private static void assertCutoff(String expected, String errorMessage) throws Exception { 63 List<Recording> recordings = FlightRecorder.getFlightRecorder().getRecordings(); 64 if (recordings.isEmpty()) { 65 throw new Exception("Expected recording to be started"); 66 } 67 if (recordings.size() != 1) { 68 throw new Exception("Expected only one recording"); 69 } 70 71 String settingName = EventNames.OldObjectSample + "#" + "cutoff"; 72 Recording r = recordings.get(0); 73 String cutoff = r.getSettings().get(settingName); 74 System.out.println(settingName + "=" + cutoff); 75 if (!expected.equals(cutoff)) { 76 throw new Exception(errorMessage); 77 } 78 r.close(); 79 } 80 81 private static void closeRecording() { 82 for (Recording r : FlightRecorder.getFlightRecorder().getRecordings()) { 83 r.close(); 84 } 85 } 86 87 }