--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/event/oldobject/TestHeapDeep.java Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2015, 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.jfr.internal.test.WhiteBox;
+import jdk.test.lib.jfr.EventNames;
+import jdk.test.lib.jfr.Events;
+
+/*
+ * @test
+ * @key jfr
+ * @requires vm.gc == "null"
+ * @library /test/lib /test/jdk
+ * @modules jdk.jfr/jdk.jfr.internal.test
+ * @run main/othervm -XX:TLABSize=2k jdk.jfr.event.oldobject.TestHeapDeep
+ */
+public class TestHeapDeep {
+
+ final static class ChainNode {
+ final ChainNode next;
+ List<byte[]> leaks;
+
+ public ChainNode(ChainNode node) {
+ next = node;
+ }
+ }
+
+ public static ChainNode leak;
+
+ public static void main(String[] args) throws Exception {
+ WhiteBox.setWriteAllObjectSamples(true);
+
+ try (Recording r = new Recording()) {
+ r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity");
+ r.start();
+ leak = createChain();
+ List<RecordedEvent> events = Events.fromRecording(r);
+ if (OldObjects.countMatchingEvents(events, byte[].class, null, null, -1, "createChain") == 0) {
+ throw new Exception("Could not find ChainNode");
+ }
+ for (RecordedEvent e : events) {
+ OldObjects.validateReferenceChainLimit(e, OldObjects.MAX_CHAIN_LENGTH);
+ }
+ }
+ }
+
+ private static ChainNode createChain() {
+ ChainNode node = new ChainNode(null);
+ node.leaks = new ArrayList<>();
+ for (int i = 0; i < 100; i++) {
+ // Allocate arrays to trigger sampling code path for interpreter / c1
+ node.leaks.add(new byte[10_000]);
+ }
+ for (int i = 0; i < OldObjects.MIN_SIZE; i++) {
+ node = new ChainNode(node);
+ }
+ return node;
+ }
+}