This topic only applies to Windows* OS.
Intel's C/C++ asynchronous input/output (Intel's C/C++ AIO) extensions, like library functions or classes, can be used to improve the performance of C/C++ applications by executing I/O operations in asynchronous mode. In other words, the extensions initiate I/O operation and immediately resume normal tasks while the I/O operations are executed in parallel.
Performs an asynchronous read operation.
Performs an asynchronous write operation.