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diff --git a/storage/mroonga/vendor/groonga/lib/dat/file-impl.hpp b/storage/mroonga/vendor/groonga/lib/dat/file-impl.hpp
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+/* -*- c-basic-offset: 2 -*- */
+/*
+ Copyright(C) 2011-2016 Brazil
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License version 2.1 as published by the Free Software Foundation.
+
+ This library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
+*/
+
+#pragma once
+
+#ifdef WIN32
+# include <windows.h>
+#endif // WIN32
+
+#include "dat.hpp"
+
+namespace grn {
+namespace dat {
+
+class FileImpl {
+ public:
+ FileImpl();
+ ~FileImpl();
+
+ void create(const char *path, UInt64 size);
+ void open(const char *path);
+ void close();
+
+ void *ptr() const {
+ return ptr_;
+ }
+ UInt64 size() const {
+ return size_;
+ }
+
+ void swap(FileImpl *rhs);
+
+ void flush();
+
+ private:
+ void *ptr_;
+ UInt64 size_;
+
+#ifdef WIN32
+ HANDLE file_;
+ HANDLE map_;
+ LPVOID addr_;
+#else // WIN32
+ int fd_;
+ void *addr_;
+ ::size_t length_;
+#endif // WIN32
+
+ void create_(const char *path, UInt64 size);
+ void open_(const char *path);
+
+ // Disallows copy and assignment.
+ FileImpl(const FileImpl &);
+ FileImpl &operator=(const FileImpl &);
+};
+
+} // namespace dat
+} // namespace grn