libcruft-util/memory/buffer/circular.hpp

56 lines
1.5 KiB
C++

/*
* 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 2015 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_MEMORY_BUFFER_CIRCULAR_HPP
#define __UTIL_MEMORY_BUFFER_CIRCULAR_HPP
#include <cstddef>
namespace util { namespace memory { namespace buffer {
// buffer size is advisory and will likely depend on page size. the user
// must check the size after creation if this field is important for
// their usage.
class circular {
public:
using value_type = char;
circular (size_t bytes);
~circular ();
circular (const circular&) = delete;
circular (circular&&) = delete;
circular& operator= (const circular&) = delete;
circular& operator= (circular&&) = delete;
char& operator[] (size_t);
const char& operator[] (size_t) const;
char* begin (void);
char* end (void);
const char* begin (void) const;
const char* end (void) const;
size_t size (void) const;
private:
char *m_begin, *m_end;
};
} } }
#endif