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