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Diffstat (limited to 'sdk/common/NvBlastFixedQueue.h')
| -rwxr-xr-x[-rw-r--r--] | sdk/common/NvBlastFixedQueue.h | 282 |
1 files changed, 141 insertions, 141 deletions
diff --git a/sdk/common/NvBlastFixedQueue.h b/sdk/common/NvBlastFixedQueue.h index 99bbdc0..8038e28 100644..100755 --- a/sdk/common/NvBlastFixedQueue.h +++ b/sdk/common/NvBlastFixedQueue.h @@ -1,141 +1,141 @@ -// This code contains NVIDIA Confidential Information and is disclosed to you -// under a form of NVIDIA software license agreement provided separately to you. -// -// Notice -// NVIDIA Corporation and its licensors retain all intellectual property and -// proprietary rights in and to this software and 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. -// -// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES -// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO -// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT, -// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE. -// -// Information and code furnished is believed to be accurate and reliable. -// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such -// information or for any infringement of patents or other rights of third parties that may -// result from its use. No license is granted by implication or otherwise under any patent -// or patent rights of NVIDIA Corporation. Details are subject to change without notice. -// This code supersedes and replaces all information previously supplied. -// NVIDIA Corporation products are not authorized for use as critical -// components in life support devices or systems without express written approval of -// NVIDIA Corporation. -// -// Copyright (c) 2016-2018 NVIDIA Corporation. All rights reserved. - - -#ifndef NVBLASTFIXEDQUEUE_H -#define NVBLASTFIXEDQUEUE_H - -#include "NvBlastAssert.h" -#include "NvBlastMemory.h" - -namespace Nv -{ -namespace Blast -{ - -/*! -FixedQueue is a queue 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 -FixedQueue<SomeClass>* arr = new (buf) FixedQueue<SomeClass>(); - -// you can get max requiredMemorySize by an array of 'capacity' elements count to use memory left -buf = buf + FixedQueue<SomeClass>::requiredMemorySize(capacity); - -*/ -template <class T> -class FixedQueue -{ -public: - explicit FixedQueue(uint32_t maxEntries) : m_num(0), m_head(0), m_tail(0), m_maxEntries(maxEntries) - { - } - - static size_t requiredMemorySize(uint32_t capacity) - { - return align16(sizeof(FixedQueue<T>)) + align16(capacity * sizeof(T)); - } - - T popFront() - { - NVBLAST_ASSERT(m_num>0); - - m_num--; - T& element = data()[m_tail]; - m_tail = (m_tail+1) % (m_maxEntries); - return element; - } - - T front() - { - NVBLAST_ASSERT(m_num>0); - - return data()[m_tail]; - } - - T popBack() - { - NVBLAST_ASSERT(m_num>0); - - m_num--; - m_head = (m_head-1) % (m_maxEntries); - return data()[m_head]; - } - - T back() - { - NVBLAST_ASSERT(m_num>0); - - uint32_t headAccess = (m_head-1) % (m_maxEntries); - return data()[headAccess]; - } - - bool pushBack(const T& element) - { - if (m_num == m_maxEntries) return false; - data()[m_head] = element; - - m_num++; - m_head = (m_head+1) % (m_maxEntries); - - return true; - } - - bool empty() const - { - return m_num == 0; - } - - uint32_t size() const - { - return m_num; - } - - -private: - uint32_t m_num; - uint32_t m_head; - uint32_t m_tail; - uint32_t m_maxEntries; - - T* data() - { - return (T*)((char*)this + sizeof(FixedQueue<T>)); - } - -private: - FixedQueue(const FixedQueue& that); -}; - -} // namespace Blast -} // namespace Nv - -#endif // ifndef NVBLASTFIXEDQUEUE_H +// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and 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.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2016-2018 NVIDIA Corporation. All rights reserved.
+
+
+#ifndef NVBLASTFIXEDQUEUE_H
+#define NVBLASTFIXEDQUEUE_H
+
+#include "NvBlastAssert.h"
+#include "NvBlastMemory.h"
+
+namespace Nv
+{
+namespace Blast
+{
+
+/*!
+FixedQueue is a queue 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
+FixedQueue<SomeClass>* arr = new (buf) FixedQueue<SomeClass>();
+
+// you can get max requiredMemorySize by an array of 'capacity' elements count to use memory left
+buf = buf + FixedQueue<SomeClass>::requiredMemorySize(capacity);
+
+*/
+template <class T>
+class FixedQueue
+{
+public:
+ explicit FixedQueue(uint32_t maxEntries) : m_num(0), m_head(0), m_tail(0), m_maxEntries(maxEntries)
+ {
+ }
+
+ static size_t requiredMemorySize(uint32_t capacity)
+ {
+ return align16(sizeof(FixedQueue<T>)) + align16(capacity * sizeof(T));
+ }
+
+ T popFront()
+ {
+ NVBLAST_ASSERT(m_num>0);
+
+ m_num--;
+ T& element = data()[m_tail];
+ m_tail = (m_tail+1) % (m_maxEntries);
+ return element;
+ }
+
+ T front()
+ {
+ NVBLAST_ASSERT(m_num>0);
+
+ return data()[m_tail];
+ }
+
+ T popBack()
+ {
+ NVBLAST_ASSERT(m_num>0);
+
+ m_num--;
+ m_head = (m_head-1) % (m_maxEntries);
+ return data()[m_head];
+ }
+
+ T back()
+ {
+ NVBLAST_ASSERT(m_num>0);
+
+ uint32_t headAccess = (m_head-1) % (m_maxEntries);
+ return data()[headAccess];
+ }
+
+ bool pushBack(const T& element)
+ {
+ if (m_num == m_maxEntries) return false;
+ data()[m_head] = element;
+
+ m_num++;
+ m_head = (m_head+1) % (m_maxEntries);
+
+ return true;
+ }
+
+ bool empty() const
+ {
+ return m_num == 0;
+ }
+
+ uint32_t size() const
+ {
+ return m_num;
+ }
+
+
+private:
+ uint32_t m_num;
+ uint32_t m_head;
+ uint32_t m_tail;
+ uint32_t m_maxEntries;
+
+ T* data()
+ {
+ return (T*)((char*)this + sizeof(FixedQueue<T>));
+ }
+
+private:
+ FixedQueue(const FixedQueue& that);
+};
+
+} // namespace Blast
+} // namespace Nv
+
+#endif // ifndef NVBLASTFIXEDQUEUE_H
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