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blender-archive/intern/memutil/MEM_Allocator.h
Campbell Barton c434782e3a File headers: SPDX License migration
Use a shorter/simpler license convention, stops the header taking so
much space.

Follow the SPDX license specification: https://spdx.org/licenses

- C/C++/objc/objc++
- Python
- Shell Scripts
- CMake, GNUmakefile

While most of the source tree has been included

- `./extern/` was left out.
- `./intern/cycles` & `./intern/atomic` are also excluded because they
  use different header conventions.

doc/license/SPDX-license-identifiers.txt has been added to list SPDX all
used identifiers.

See P2788 for the script that automated these edits.

Reviewed By: brecht, mont29, sergey

Ref D14069
2022-02-11 09:14:36 +11:00

84 lines
1.6 KiB
C++

/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup intern_memutil
*/
#ifndef __MEM_ALLOCATOR_H__
#define __MEM_ALLOCATOR_H__
#include "guardedalloc/MEM_guardedalloc.h"
#include <stddef.h>
template<typename _Tp> struct MEM_Allocator {
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef _Tp *pointer;
typedef const _Tp *const_pointer;
typedef _Tp &reference;
typedef const _Tp &const_reference;
typedef _Tp value_type;
template<typename _Tp1> struct rebind {
typedef MEM_Allocator<_Tp1> other;
};
MEM_Allocator() throw()
{
}
MEM_Allocator(const MEM_Allocator &) throw()
{
}
template<typename _Tp1> MEM_Allocator(const MEM_Allocator<_Tp1>) throw()
{
}
~MEM_Allocator() throw()
{
}
pointer address(reference __x) const
{
return &__x;
}
const_pointer address(const_reference __x) const
{
return &__x;
}
/* NOTE: `__n` is permitted to be 0.
* The C++ standard says nothing about what the return value is when `__n == 0`. */
_Tp *allocate(size_type __n, const void * = 0)
{
_Tp *__ret = NULL;
if (__n)
__ret = static_cast<_Tp *>(MEM_mallocN(__n * sizeof(_Tp), "STL MEM_Allocator"));
return __ret;
}
// __p is not permitted to be a null pointer.
void deallocate(pointer __p, size_type)
{
MEM_freeN(__p);
}
size_type max_size() const throw()
{
return size_t(-1) / sizeof(_Tp);
}
void construct(pointer __p, const _Tp &__val)
{
new (__p) _Tp(__val);
}
void destroy(pointer __p)
{
__p->~_Tp();
}
};
#endif // __MEM_ALLOCATOR_H__