--- /dev/null	2018-06-17 23:18:20.806999507 +0800
+++ new/src/share/classes/jdk/jfr/consumer/RecordedStackTrace.java	2019-01-29 10:59:11.692375633 +0800
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2016, 2019, 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.consumer;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import jdk.jfr.ValueDescriptor;
+import jdk.jfr.internal.Type;
+
+/**
+ * A recorded stack trace.
+ *
+ * @since 9
+ */
+public final class RecordedStackTrace extends RecordedObject {
+
+    static ObjectFactory<RecordedStackTrace> createFactory(Type type, TimeConverter timeConverter) {
+        return new ObjectFactory<RecordedStackTrace>(type) {
+            @Override
+            RecordedStackTrace createTyped(List<ValueDescriptor> desc, long id, Object[] object) {
+                return new RecordedStackTrace(desc, object, timeConverter);
+            }
+        };
+    }
+
+    private RecordedStackTrace(List<ValueDescriptor> desc, Object[] values, TimeConverter timeConverter) {
+        super(desc, values, timeConverter);
+    }
+
+    /**
+     * Returns the frames in the stack trace.
+     *
+     * @return a list of Java stack frames, not {@code null}
+     */
+    @SuppressWarnings("unchecked")
+    public List<RecordedFrame> getFrames() {
+        Object[] array = getTyped("frames", Object[].class, null);
+        if (array == null) {
+            return Collections.EMPTY_LIST;
+        }
+        List<?> list = Arrays.asList(array);
+        return (List<RecordedFrame>) list;
+    }
+
+    /**
+     * Returns {@code true} if the stack trace is truncated due to its size,
+     * {@code false} otherwise.
+     *
+     * @return {@code true} if the stack trace is truncated, {@code false}
+     *         otherwise
+     */
+    public boolean isTruncated() {
+        return getTyped("truncated", Boolean.class, true);
+    }
+}