52 lines
1.5 KiB
C++
52 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_ALLOC_LINEAR_HPP
|
|
#define __UTIL_ALLOC_LINEAR_HPP
|
|
|
|
#include <cstddef>
|
|
|
|
|
|
namespace util { namespace alloc {
|
|
// allocate progressively across a buffer without concern for deallocation.
|
|
// deallocation is a noop; the only way to free allocations is via reset.
|
|
class linear {
|
|
public:
|
|
linear (const linear&) = delete;
|
|
linear (linear&&) = delete;
|
|
linear& operator= (const linear&) = delete;
|
|
linear& operator= (linear&&) = delete;
|
|
|
|
linear (void *begin, void *end);
|
|
|
|
void* allocate (size_t bytes, size_t alignment = alignof (std::max_align_t));
|
|
void deallocate (void *ptr, size_t bytes, size_t alignment = alignof (std::max_align_t));
|
|
|
|
void reset (void);
|
|
|
|
size_t capacity (void) const;
|
|
size_t size (void) const;
|
|
size_t remain (void) const;
|
|
|
|
protected:
|
|
char *m_begin, *m_end, *m_cursor;
|
|
};
|
|
} }
|
|
|
|
#include "./linear.hpp"
|
|
|
|
#endif
|