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PxDefaultAllocator.h

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#ifndef PX_DEFAULT_ALLOCATOR_H
#define PX_DEFAULT_ALLOCATOR_H

#include "foundation/PxAllocatorCallback.h"
#include "foundation/PxAssert.h"
#include "common/PxPhysXCommonConfig.h"

#include <stdlib.h>

#if PX_WINDOWS || PX_LINUX_FAMILY || PX_SWITCH
#include <malloc.h>
#endif

#if !PX_DOXYGEN
namespace physx
{
#endif

#if PX_WINDOWS
// on win32 we only have 8-byte alignment guaranteed, but the CRT provides special aligned allocation fns
PX_FORCE_INLINE void* platformAlignedAlloc(size_t size)
{
    return _aligned_malloc(size, 16);
}

PX_FORCE_INLINE void platformAlignedFree(void* ptr)
{
    _aligned_free(ptr);
}
#elif PX_LINUX_FAMILY || PX_SWITCH
PX_FORCE_INLINE void* platformAlignedAlloc(size_t size)
{
    return ::memalign(16, size);
}

PX_FORCE_INLINE void platformAlignedFree(void* ptr)
{
    ::free(ptr);
}
#else
// on all other platforms we get 16-byte alignment by default
PX_FORCE_INLINE void* platformAlignedAlloc(size_t size)
{
    return ::malloc(size);  
}

PX_FORCE_INLINE void platformAlignedFree(void* ptr)
{
    ::free(ptr);
}
#endif

class PxDefaultAllocator : public PxAllocatorCallback
{
public:
    void* allocate(size_t size, const char*, const char*, int)
    {
        void* ptr = platformAlignedAlloc(size);
        PX_ASSERT((reinterpret_cast<size_t>(ptr) & 15)==0);
        return ptr;
    }

    void deallocate(void* ptr)
    {
        platformAlignedFree(ptr);
    }
};

#if !PX_DOXYGEN
} // namespace physx
#endif

#endif

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