1 /* 2 * Copyright (c) 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.oldobject; 27 28 import java.util.ArrayList; 29 import java.util.List; 30 31 import jdk.jfr.Recording; 32 import jdk.jfr.consumer.RecordedEvent; 33 import jdk.test.lib.jfr.EventNames; 34 import jdk.test.lib.jfr.Events; 35 36 /** 37 * @test 38 * @key jfr 39 * @requires vm.hasJFR 40 * @requires vm.gc == "null" 41 * @library /test/lib /test/jdk 42 * @summary Purpose of this test is to run leak profiler without command line tweaks or WhiteBox hacks until we succeed 43 * @run main/othervm jdk.jfr.event.oldobject.TestSanityDefault 44 */ 45 public class TestSanityDefault { 46 47 static private class FindMe { 48 } 49 50 public static List<FindMe> list = new ArrayList<>(OldObjects.MIN_SIZE); 51 52 public static void main(String[] args) throws Exception { 53 // Should not use WhiteBox API, we want to execute actual code paths 54 55 // Trigger c2 compilation, so we get sample 56 for (long i = 0; i < 100_000_000; i++) { 57 allocateFindMe(true); 58 } 59 60 61 // It's hard to get samples with interpreter / C1 so loop until we do 62 while (true) { 63 try (Recording r = new Recording()) { 64 r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity"); 65 r.start(); 66 allocateFindMe(false); 67 System.gc(); 68 r.stop(); 69 List<RecordedEvent> events = Events.fromRecording(r); 70 if (OldObjects.countMatchingEvents(events, FindMe.class, null, null, -1, "allocateFindMe") > 0) { 71 return; 72 } 73 // no events found, retry 74 } 75 } 76 } 77 78 public static void allocateFindMe(boolean doNothing) { 79 if (doNothing) { 80 return; 81 } 82 for (int i = 0; i < OldObjects.MIN_SIZE; i++) { 83 // Purposely don't allocate array, so we at least 84 // in one old-object test check an ordinary object. 85 list.add(new FindMe()); 86 } 87 } 88 }