_INITIALIZE_FAST_IO_PARAMS

struct _INITIALIZE_FAST_IO_PARAMS
{
    PFAST_IO_SECTION header_ptr;
    ULONG data_size;
};

header_ptr
Pointer to the shared memory section.

data_size
Size of the memory section above.

Available starting version 3.2.20. Fast I/O is supported for Windows Vista and later. WOW64 mode is not supported.