Function cuPointerGetAttributes

pub unsafe extern "C" fn cuPointerGetAttributes(
    numAttributes: c_uint,
    attributes: *mut CUpointer_attribute,
    data: *mut *mut c_void,
    ptr: CUdeviceptr,
) -> CUresult

\brief Returns information about a pointer.

The supported attributes are (refer to ::cuPointerGetAttribute for attribute descriptions and restrictions):

• ::CU_POINTER_ATTRIBUTE_CONTEXT
• ::CU_POINTER_ATTRIBUTE_MEMORY_TYPE
• ::CU_POINTER_ATTRIBUTE_DEVICE_POINTER
• ::CU_POINTER_ATTRIBUTE_HOST_POINTER
• ::CU_POINTER_ATTRIBUTE_SYNC_MEMOPS
• ::CU_POINTER_ATTRIBUTE_BUFFER_ID
• ::CU_POINTER_ATTRIBUTE_IS_MANAGED
• ::CU_POINTER_ATTRIBUTE_DEVICE_ORDINAL
• ::CU_POINTER_ATTRIBUTE_RANGE_START_ADDR
• ::CU_POINTER_ATTRIBUTE_RANGE_SIZE
• ::CU_POINTER_ATTRIBUTE_MAPPED
• ::CU_POINTER_ATTRIBUTE_IS_LEGACY_CUDA_IPC_CAPABLE
• ::CU_POINTER_ATTRIBUTE_ALLOWED_HANDLE_TYPES
• ::CU_POINTER_ATTRIBUTE_MEMPOOL_HANDLE

\param numAttributes - Number of attributes to query \param attributes - An array of attributes to query (numAttributes and the number of attributes in this array should match) \param data - A two-dimensional array containing pointers to memory locations where the result of each attribute query will be written to. \param ptr - Pointer to query

Unlike ::cuPointerGetAttribute, this function will not return an error when the \p ptr encountered is not a valid CUDA pointer. Instead, the attributes are assigned default NULL values and CUDA_SUCCESS is returned.

If \p ptr was not allocated by, mapped by, or registered with a ::CUcontext which uses UVA (Unified Virtual Addressing), ::CUDA_ERROR_INVALID_CONTEXT is returned.

\return ::CUDA_SUCCESS, ::CUDA_ERROR_DEINITIALIZED, ::CUDA_ERROR_INVALID_CONTEXT, ::CUDA_ERROR_INVALID_VALUE, ::CUDA_ERROR_INVALID_DEVICE \notefnerr

\sa ::cuPointerGetAttribute, ::cuPointerSetAttribute, ::cudaPointerGetAttributes