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// Copyright (C) 2010-2013, Gabriel Dos Reis.
// All rights reserved.
// Written by Gabriel Dos Reis.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// - Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// - Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in
// the documentation and/or other materials provided with the
// distribution.
//
// - Neither the name of OpenAxiom. nor the names of its contributors
// may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// --% Author: Gabriel Dos Reis
// --% Description:
// --% Provide random access read to files through file mapping.
#ifndef OPENAXIOM_FILEMAPPING_included
#define OPENAXIOM_FILEMAPPING_included
#include <open-axiom/storage>
namespace OpenAxiom {
namespace Memory {
// -----------------
// -- FileMapping --
// -----------------
struct FileMapping {
explicit FileMapping(std::string);
FileMapping(FileMapping&&);
~FileMapping();
const Byte* begin() const { return start; }
const Byte* end() const { return begin() + extent; }
std::size_t size() const { return extent; }
protected:
Byte* start; // address at the mapped storage
size_t extent; // length (in bytes) of the storage
private:
FileMapping(const FileMapping&) = delete;
FileMapping& operator=(const FileMapping&) = delete;
};
}
}
#endif // OPENAXIOM_FILEMAPPING_included
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