--- /dev/null	2019-01-28 17:46:05.000000000 +0800
+++ new/src/share/vm/jfr/leakprofiler/checkpoint/objectSampleDescription.hpp	2019-01-28 17:46:04.000000000 +0800
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2017, 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.
+ *
+ * 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.
+ *
+ */
+
+#ifndef SHARE_VM_LEAKPROFILER_CHECKPOINT_OBJECTSAMPLEDESCRIPTION_HPP
+#define SHARE_VM_LEAKPROFILER_CHECKPOINT_OBJECTSAMPLEDESCRIPTION_HPP
+
+#define OBJECT_SAMPLE_DESCRIPTION_BUFFER_SIZE 100
+
+#include "memory/allocation.hpp"
+
+class outputStream;
+
+class ObjectDescriptionBuilder : public StackObj {
+private:
+  char _buffer[OBJECT_SAMPLE_DESCRIPTION_BUFFER_SIZE];
+  size_t _index;
+
+public:
+  ObjectDescriptionBuilder();
+
+  void write_text(const char* text);
+  void write_int(jint value);
+  void reset();
+
+  void print_description(outputStream* out);
+  const char* description();
+};
+
+class ObjectSampleDescription : public StackObj {
+private:
+  ObjectDescriptionBuilder _description;
+  oop _object;
+
+  void write_text(const char* text);
+  void write_int(jint value);
+
+  void write_object_details();
+  void write_size(jint size);
+  void write_thread_name();
+  void write_thread_group_name();
+  void write_class_name();
+  void write_object_to_buffer();
+  bool is_class(Symbol* s1, const char* s2);
+  void ensure_initialized();
+  bool read_int_size(jint* result);
+
+public:
+  ObjectSampleDescription(oop object);
+  void print_description(outputStream* out);
+  const char* description();
+};
+
+#endif // SHARE_VM_LEAKPROFILER_CHECKPOINT_OBJECTSAMPLEDESCRIPTION_HPP