Expand description
POSIX Asynchronous I/O
The POSIX AIO interface is used for asynchronous I/O on files and disk-like
devices. It supports read,
write,
fsync,
readv, and
writev, operations, subject to
platform support. Completion
notifications can optionally be delivered via
signals, via the
aio_suspend function, or via polling. Some
platforms support other completion
notifications, such as
kevent.
Multiple operations may be submitted in a batch with
lio_listio, though the standard does not guarantee
that they will be executed atomically.
Outstanding operations may be cancelled with
cancel or
aio_cancel_all, though the operating system may
not support this for all filesystems and devices.
Structs
An asynchronous version of
fsync(2).Asynchronously reads from a file descriptor into a buffer
Asynchronously writes from a buffer to a file descriptor
Enums
Return values for
AioCb::cancel and
aio_cancel_allMode for
AioCb::fsync. Controls whether only data or both data and
metadata are synced.Mode for
lio_listioTraits
Methods common to all AIO operations
Functions
Cancels outstanding AIO requests for a given file descriptor.
Suspends the calling process until at least one of the specified operations
have completed, a signal is delivered, or the timeout has passed.
Submits multiple asynchronous I/O requests with a single system call.