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authorBryan Galdrikian <[email protected]>2017-02-24 09:32:20 -0800
committerBryan Galdrikian <[email protected]>2017-02-24 09:32:20 -0800
commite1bf674c16e3c8472b29574159c789cd3f0c64e0 (patch)
tree9f0cfce09c71a2c27ff19589fcad6cd83504477c /sdk/common/NvBlastFixedArray.h
parentfirst commit (diff)
downloadblast-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')
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+/*
+* 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