Revision control
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions
- // are met:
- // * Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above copyright
- // notice, this list of conditions and the following disclaimer in the
- // documentation and/or other materials provided with the distribution.
- // * Neither the name of NVIDIA CORPORATION nor the names of its
- // contributors may be used to endorse or promote products derived
- // from this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
- // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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- // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- //
- // Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved.
- // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
- // Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
-
- #ifndef PSFOUNDATION_PSALIGNEDMALLOC_H
- #define PSFOUNDATION_PSALIGNEDMALLOC_H
-
- #include "PsUserAllocated.h"
-
- /*!
- Allocate aligned memory.
- Alignment must be a power of 2!
- -- should be templated by a base allocator
- */
-
- namespace physx
- {
- namespace shdfnd
- {
- /**
- Allocator, which is used to access the global PxAllocatorCallback instance
- (used for dynamic data types template instantiation), which can align memory
- */
-
- // SCS: AlignedMalloc with 3 params not found, seems not used on PC either
- // disabled for now to avoid GCC error
-
- template <uint32_t N, typename BaseAllocator = NonTrackingAllocator>
- class AlignedAllocator : public BaseAllocator
- {
- public:
- AlignedAllocator(const BaseAllocator& base = BaseAllocator()) : BaseAllocator(base)
- {
- }
-
- void* allocate(size_t size, const char* file, int line)
- {
- size_t pad = N - 1 + sizeof(size_t); // store offset for delete.
- uint8_t* base = reinterpret_cast<uint8_t*>(BaseAllocator::allocate(size + pad, file, line));
- if(!base)
- return NULL;
-
- uint8_t* ptr = reinterpret_cast<uint8_t*>(size_t(base + pad) & ~(size_t(N) - 1)); // aligned pointer, ensuring N
- // is a size_t
- // wide mask
- reinterpret_cast<size_t*>(ptr)[-1] = size_t(ptr - base); // store offset
-
- return ptr;
- }
- void deallocate(void* ptr)
- {
- if(ptr == NULL)
- return;
-
- uint8_t* base = reinterpret_cast<uint8_t*>(ptr) - reinterpret_cast<size_t*>(ptr)[-1];
- BaseAllocator::deallocate(base);
- }
- };
-
- } // namespace shdfnd
- } // namespace physx
-
- #endif // #ifndef PSFOUNDATION_PSALIGNEDMALLOC_H