The aio_suspend() function shall suspend the calling thread
until at least one of the asynchronous I/O operations
referenced by the list argument has completed, until a signal
interrupts the function, or, if timeout is not NULL,
until the time interval specified by timeout has passed. If
any of the aiocb structures in the list correspond to
completed asynchronous I/O operations (that is, the error status for
the operation is not equal to [EINPROGRESS]) at the time of
the call, the function shall return without suspending the calling
thread. The list argument is an array of pointers to
asynchronous I/O control blocks. The nent argument indicates
the number of elements in the array. Each aiocb
structure pointed to has been used in initiating an asynchronous I/O
request via aio_read(), aio_write(), or lio_listio().
This array may contain NULL pointers, which are ignored. If this array
contains pointers that refer to aiocb structures that have not
been used in submitting asynchronous I/O, the effect is
undefined.
If the time interval indicated in the timespec structure pointed
to by timeout passes before any of the I/O
operations referenced by list are completed, then aio_suspend()
shall return with an error. If the
Monotonic Clock option is supported, the clock that shall be used
to measure this time interval shall be the CLOCK_MONOTONIC clock.
If the aio_suspend() function returns after one or more asynchronous
I/O operations have completed, the function shall
return zero. Otherwise, the function shall return a value of -1 and
set errno to indicate the error.
The application may determine which asynchronous I/O completed by
scanning the associated error and return status using aio_error()
and aio_return(),
respectively.
No asynchronous I/O indicated in the list referenced by list
completed in the time interval indicated by
timeout.
EINTR
A signal interrupted the aio_suspend() function. Note that,
since each asynchronous I/O operation may possibly provoke a
signal when it completes, this error return may be caused by the completion
of one (or more) of the very I/O operations being
awaited.
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online at
http://www.opengroup.org/unix/online.html .
IEEE/The Open Group
AIO_SUSPEND (P)
2003
Generated by OpenAsthra.com from man3p/aio_suspend.3p using man macros.
