57 lines
1.6 KiB
C++
57 lines
1.6 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 CRUFT_UTIL_ALLOC_RAW_STACK_HPP
|
|
#define CRUFT_UTIL_ALLOC_RAW_STACK_HPP
|
|
|
|
#include <cstddef>
|
|
|
|
|
|
namespace util::alloc::raw {
|
|
// allocate memory from a buffer in a stacklike manner. deallocation that
|
|
// is not correctly ordered has undefined (read 'bad') results.
|
|
class stack {
|
|
public:
|
|
stack (const stack&) = delete;
|
|
stack (stack&&) = delete;
|
|
stack& operator= (const stack&) = delete;
|
|
stack& operator= (stack&&) = delete;
|
|
|
|
stack (void *begin, void *end);
|
|
|
|
void *allocate (size_t bytes, size_t alignment);
|
|
void *allocate (size_t bytes);
|
|
|
|
void deallocate (void *ptr, size_t bytes);
|
|
void deallocate (void *ptr, size_t bytes, size_t alignment);
|
|
|
|
void* begin (void);
|
|
const void* begin (void) const;
|
|
size_t offset (const void*) const;
|
|
|
|
void reset (void);
|
|
|
|
size_t capacity (void) const;
|
|
size_t used (void) const;
|
|
size_t remain (void) const;
|
|
|
|
private:
|
|
char *m_begin, *m_end, *m_cursor;
|
|
};
|
|
}
|
|
|
|
#endif
|