Boost application performance using asynchronous I/O-ref

This function is called only after the?aio_error?call has determined that your request has completed (either successfully or in error). The return value of?aio_return?is identical to that of the?read?or?write?system call in a synchronous context (number of bytes transferred or?-1?for error).

The?aio_write?function is used to request an asynchronous write. Its function prototype is:

aio_write( struct aiocb *aiocbp );

The?aio_write?function returns immediately,indicating that the request has been enqueued (with a return of?0?on success and?-1?on failure,witherrno?properly set).

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