PxAlignedMalloc.h

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#ifndef PX_ALIGNED_MALLOC_H
#define PX_ALIGNED_MALLOC_H
 
#include "PxUserAllocated.h"
 
#if !PX_DOXYGEN
namespace physx
{
#endif
    // 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 = PxAllocator>
    class PxAlignedAllocator : public BaseAllocator
    {
    public:
        PxAlignedAllocator(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);
        }
    };
 
#if !PX_DOXYGEN
} // namespace physx
#endif
 
#endif