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diff --git a/storage/perfschema/pfs_status.h b/storage/perfschema/pfs_status.h
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+/* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License, version 2.0,
+  as published by the Free Software Foundation.
+
+  This program is also distributed with certain software (including
+  but not limited to OpenSSL) that is licensed under separate terms,
+  as designated in a particular file or component or in included license
+  documentation.  The authors of MySQL hereby grant you an additional
+  permission to link the program and your derivative works with the
+  separately licensed software that they have included with MySQL.
+
+  This program 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 2.0, for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+#ifndef PFS_STATUS_H
+#define PFS_STATUS_H
+
+/**
+  @file storage/perfschema/pfs_status.h
+  Status variables statistics (declarations).
+*/
+
+struct PFS_status_stats
+{
+  PFS_status_stats();
+
+  void reset();
+  void aggregate(const PFS_status_stats *from);
+  void aggregate_from(const STATUS_VAR *from);
+  void aggregate_to(STATUS_VAR *to);
+
+  bool m_has_stats;
+  ulong m_stats[COUNT_GLOBAL_STATUS_VARS];
+};
+
+void reset_status_by_thread();
+void reset_status_by_account();
+void reset_status_by_user();
+void reset_status_by_host();
+void reset_global_status();
+
+#endif
+