| 1 | /* |
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| 2 | Copyright (c) 2005-2021 Intel Corporation |
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| 3 | |
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| 4 | Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | you may not use this file except in compliance with the License. |
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| 6 | You may obtain a copy of the License at |
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| 7 | |
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| 8 | http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | |
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| 10 | Unless required by applicable law or agreed to in writing, software |
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| 11 | distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | See the License for the specific language governing permissions and |
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| 14 | limitations under the License. |
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| 15 | */ |
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| 16 | #ifndef __TBB_aligned_space_H |
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| 17 | #define __TBB_aligned_space_H |
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| 18 | |
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| 19 | #include <cstddef> |
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| 20 | |
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| 21 | #include "_template_helpers.h" |
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| 22 | |
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| 23 | namespace tbb { |
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| 24 | namespace detail { |
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| 25 | inline namespace d0 { |
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| 26 | |
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| 27 | //! Block of space aligned sufficiently to construct an array T with N elements. |
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| 28 | /** The elements are not constructed or destroyed by this class. |
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| 29 | @ingroup memory_allocation */ |
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| 30 | template<typename T, std::size_t N = 1> |
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| 31 | class aligned_space { |
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| 32 | alignas(alignof(T)) std::uint8_t aligned_array[N * sizeof(T)]; |
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| 33 | |
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| 34 | public: |
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| 35 | //! Pointer to beginning of array |
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| 36 | T* begin() const { return punned_cast<T*>(&aligned_array); } |
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| 37 | |
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| 38 | //! Pointer to one past last element in array. |
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| 39 | T* end() const { return begin() + N; } |
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| 40 | }; |
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| 41 | |
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| 42 | } // namespace d0 |
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| 43 | } // namespace detail |
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| 44 | } // namespace tbb |
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| 45 | |
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| 46 | #endif /* __TBB_aligned_space_H */ |
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| 47 | |
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