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| author | Bryan Galdrikian <[email protected]> | 2017-02-24 09:32:20 -0800 |
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| committer | Bryan Galdrikian <[email protected]> | 2017-02-24 09:32:20 -0800 |
| commit | e1bf674c16e3c8472b29574159c789cd3f0c64e0 (patch) | |
| tree | 9f0cfce09c71a2c27ff19589fcad6cd83504477c /sdk/common/NvBlastFixedArray.h | |
| parent | first commit (diff) | |
| download | blast-e1bf674c16e3c8472b29574159c789cd3f0c64e0.tar.xz blast-e1bf674c16e3c8472b29574159c789cd3f0c64e0.zip | |
Updating to [email protected] and [email protected] with a new directory structure.
NvBlast folder is gone, files have been moved to top level directory. README is changed to reflect this.
Diffstat (limited to 'sdk/common/NvBlastFixedArray.h')
| -rw-r--r-- | sdk/common/NvBlastFixedArray.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/sdk/common/NvBlastFixedArray.h b/sdk/common/NvBlastFixedArray.h new file mode 100644 index 0000000..654158b --- /dev/null +++ b/sdk/common/NvBlastFixedArray.h @@ -0,0 +1,128 @@ +/* +* Copyright (c) 2016-2017, NVIDIA CORPORATION. All rights reserved. +* +* NVIDIA CORPORATION and its licensors retain all intellectual property +* and proprietary rights in and to this software, related documentation +* and any modifications thereto. Any use, reproduction, disclosure or +* distribution of this software and related documentation without an express +* license agreement from NVIDIA CORPORATION is strictly prohibited. +*/ + +#ifndef NVBLASTFIXEDARRAY_H +#define NVBLASTFIXEDARRAY_H + +#include "NvBlastAssert.h" +#include "NvBlastMemory.h" + +namespace Nv +{ +namespace Blast +{ + +/*! +FixedArray is a sequential container which is intended to be used with placement new on chunk of memory. +It'll use following memory for data layout. As follows: + +// some memory +char *buf = new char[64 * 1024]; + +// placement new on this memory +FixedArray<SomeClass>* arr = new (buf) FixedArray<SomeClass>(); + +// you can get max requiredMemorySize by an array of 'capacity' elements count to use memory left +buf = buf + FixedArray<SomeClass>::requiredMemorySize(capacity); + +buf: + ++------------------------------------------------------------+ +| uint32_t | T[0] | T[1] | T[2] | ... | ++------------------------------------------------------------+ + + +!!!TODO: +- check ctor/dtor of elements calls +*/ +template <class T> +class FixedArray +{ +public: + explicit FixedArray() : m_size(0) + { + } + + static size_t requiredMemorySize(uint32_t capacity) + { + return align16(sizeof(FixedArray<T>)) + align16(capacity * sizeof(T)); + } + + NV_FORCE_INLINE T& pushBack(T& t) + { + new (data() + m_size) T(t); + return data()[m_size++]; + } + + T popBack() + { + NVBLAST_ASSERT(m_size); + T t = data()[m_size - 1]; + data()[--m_size].~T(); + return t; + } + + void clear() + { + for(T* first = data(); first < data() + m_size; ++first) + first->~T(); + m_size = 0; + } + + NV_FORCE_INLINE void forceSize_Unsafe(uint32_t s) + { + m_size = s; + } + + NV_FORCE_INLINE T& operator[](uint32_t idx) + { + NVBLAST_ASSERT(idx < m_size); + return data()[idx]; + } + + NV_FORCE_INLINE const T& operator[](uint32_t idx) const + { + NVBLAST_ASSERT(idx < m_size); + return data()[idx]; + } + + NV_FORCE_INLINE T& at(uint32_t idx) + { + NVBLAST_ASSERT(idx < m_size); + return data()[idx]; + } + + NV_FORCE_INLINE const T& at(uint32_t idx) const + { + NVBLAST_ASSERT(idx < m_size); + return data()[idx]; + } + + NV_FORCE_INLINE uint32_t size() const + { + return m_size; + } + +private: + uint32_t m_size; + + NV_FORCE_INLINE T* data() + { + return (T*)((char*)this + sizeof(FixedArray<T>)); + } + +private: + FixedArray(const FixedArray& that); +}; + +} // namespace Blast +} // namespace Nv + +#endif // ifndef NVBLASTFIXEDARRAY_H |