получить статус возврата асинхронной операции ввода-вывода (get return status of asynchronous I/O operation)
Имя (Name)
aio_return - get return status of asynchronous I/O operation
Синопсис (Synopsis)
#include <aio.h>
ssize_t aio_return(struct aiocb *aiocbp);
Link with -lrt.
Описание (Description)
The aio_return() function returns the final return status for the
asynchronous I/O request with control block pointed to by aiocbp.
(See aio(7) for a description of the aiocb structure.)
This function should be called only once for any given request,
after aio_error(3) returns something other than EINPROGRESS.
Возвращаемое значение (Return value)
If the asynchronous I/O operation has completed, this function
returns the value that would have been returned in case of a
synchronous read(2), write(2), fsync(2), or fdatasync(2), call.
On error, -1 is returned, and errno is set to indicate the error.
If the asynchronous I/O operation has not yet completed, the
return value and effect of aio_return() are undefined.
Ошибки (Error)
EINVAL aiocbp does not point at a control block for an
asynchronous I/O request of which the return status has
not been retrieved yet.
ENOSYS aio_return() is not implemented.
Версии (Versions)
The aio_return() function is available since glibc 2.1.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│aio_return() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008.
Примеры (Examples)
See aio(7).
Смотри также (See also)
aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3),
aio_suspend(3), aio_write(3), lio_listio(3), aio(7)
