--- /dev/null 2017-11-09 09:38:01.297999907 +0100 +++ new/test/jdk/jdk/jfr/event/oldobject/TestSanityDefault.java 2018-04-09 18:20:46.048446283 +0200 @@ -0,0 +1,87 @@ +/* + * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package jdk.jfr.event.oldobject; + +import java.util.ArrayList; +import java.util.List; + +import jdk.jfr.Recording; +import jdk.jfr.consumer.RecordedEvent; +import jdk.test.lib.jfr.EventNames; +import jdk.test.lib.jfr.Events; + +/* + * @test + * @key jfr + * @requires vm.gc == "null" + * @library /test/lib /test/jdk + * @summary Purpose of this test is to run leak profiler without command line tweaks or WhiteBox hacks until we succeed + * @run main/othervm jdk.jfr.event.oldobject.TestSanityDefault + */ +public class TestSanityDefault { + + static private class FindMe { + } + + public static List list = new ArrayList<>(OldObjects.MIN_SIZE); + + public static void main(String[] args) throws Exception { + // Should not use WhiteBox API, we want to execute actual code paths + + // Trigger c2 compilation, so we get sample + for (long i = 0; i < 100_000_000; i++) { + allocateFindMe(true); + } + + + // It's hard to get samples with interpreter / C1 so loop until we do + while (true) { + try (Recording r = new Recording()) { + r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity"); + r.start(); + allocateFindMe(false); + System.gc(); + r.stop(); + List events = Events.fromRecording(r); + if (OldObjects.countMatchingEvents(events, FindMe.class, null, null, -1, "allocateFindMe") > 0) { + return; + } + // no events found, retry + } + } + } + + public static void allocateFindMe(boolean doNothing) { + if (doNothing) { + return; + } + for (int i = 0; i < OldObjects.MIN_SIZE; i++) { + // Purposely don't allocate array, so we at least + // in one old-object test check an ordinary object. + list.add(new FindMe()); + } + } +}