libcruft-util/posix/map.hpp

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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2016 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __CRUFT_UTIL_POSIX_HPP
#define __CRUFT_UTIL_POSIX_HPP
#include "fd.hpp"
#include <sys/mman.h>
#include <cstdint>
namespace util::posix {
class map {
public:
map (const map&) = delete;
map (map&&) noexcept;
map (size_t size, int prot, int flags);
map (size_t size, int prot, int flags, const fd&, off_t offset = 0);
~map ();
map& operator= (const map&) = delete;
map& operator= (map&&) noexcept;
uint8_t* begin (void);
uint8_t* end (void);
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const uint8_t* begin (void) const;
const uint8_t* end (void) const;
const uint8_t* cbegin (void) const;
const uint8_t* cend (void) const;
void* data (void);
const void* data (void) const;
void sync (void *addr, size_t len, int flags);
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bool empty (void) const;
size_t size (void) const;
enum class resize_t { MOVE, NOMOVE };
void resize (size_t newsize, resize_t = resize_t::NOMOVE);
private:
void *m_addr;
size_t m_size;
};
}
#endif