diff options
author | Jacques Lucke <jacques@blender.org> | 2020-04-21 18:31:56 +0300 |
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committer | Jacques Lucke <jacques@blender.org> | 2020-04-21 18:31:56 +0300 |
commit | 3059353b38ed1fc432cce584afad5bef3b7f2227 (patch) | |
tree | 7b0fe042cccc6a3372ecb379e2d1725dea6515a9 /source/blender/blenlib/BLI_memory_utils.hh | |
parent | 0e52b91f97bcb800dc4f07f93f7f07e1cf9cab1c (diff) |
BLI: Use .hh extension for C++ headers in blenlib
Diffstat (limited to 'source/blender/blenlib/BLI_memory_utils.hh')
-rw-r--r-- | source/blender/blenlib/BLI_memory_utils.hh | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_memory_utils.hh b/source/blender/blenlib/BLI_memory_utils.hh new file mode 100644 index 00000000000..d9acf08a43f --- /dev/null +++ b/source/blender/blenlib/BLI_memory_utils.hh @@ -0,0 +1,123 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef __BLI_MEMORY_UTILS_HH__ +#define __BLI_MEMORY_UTILS_HH__ + +/** \file + * \ingroup bli + */ + +#include <algorithm> +#include <memory> + +#include "BLI_utildefines.h" + +namespace BLI { + +using std::copy; +using std::copy_n; +using std::uninitialized_copy; +using std::uninitialized_copy_n; +using std::uninitialized_fill; +using std::uninitialized_fill_n; + +template<typename T> void construct_default(T *ptr) +{ + new (ptr) T(); +} + +template<typename T> void destruct(T *ptr) +{ + ptr->~T(); +} + +template<typename T> void destruct_n(T *ptr, uint n) +{ + for (uint i = 0; i < n; i++) { + ptr[i].~T(); + } +} + +template<typename T> void uninitialized_move_n(T *src, uint n, T *dst) +{ + std::uninitialized_copy_n(std::make_move_iterator(src), n, dst); +} + +template<typename T> void move_n(T *src, uint n, T *dst) +{ + std::copy_n(std::make_move_iterator(src), n, dst); +} + +template<typename T> void uninitialized_relocate(T *src, T *dst) +{ + new (dst) T(std::move(*src)); + destruct(src); +} + +template<typename T> void uninitialized_relocate_n(T *src, uint n, T *dst) +{ + uninitialized_move_n(src, n, dst); + destruct_n(src, n); +} + +template<typename T> void relocate(T *src, T *dst) +{ + *dst = std::move(*src); + destruct(src); +} + +template<typename T> void relocate_n(T *src, uint n, T *dst) +{ + move_n(src, n, dst); + destruct_n(src, n); +} + +template<typename T, typename... Args> std::unique_ptr<T> make_unique(Args &&... args) +{ + return std::unique_ptr<T>(new T(std::forward<Args>(args)...)); +} + +template<typename T> struct DestructValueAtAddress { + void operator()(T *ptr) + { + ptr->~T(); + } +}; + +template<typename T> using destruct_ptr = std::unique_ptr<T, DestructValueAtAddress<T>>; + +template<uint Size, uint Alignment> class alignas(Alignment) AlignedBuffer { + private: + /* Don't create an empty array. This causes problems with some compilers. */ + static constexpr uint ActualSize = (Size > 0) ? Size : 1; + char m_buffer[ActualSize]; + + public: + void *ptr() + { + return (void *)m_buffer; + } + + const void *ptr() const + { + return (const void *)m_buffer; + } +}; + +} // namespace BLI + +#endif /* __BLI_MEMORY_UTILS_HH__ */ |