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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
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AIO_SUSPEND(3P) POSIX Programmer's Manual AIO_SUSPEND(3P)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
aio_suspend — wait for an asynchronous I/O request
#include <aio.h>
int aio_suspend(const struct aiocb *const list[], int nent,
const struct timespec *timeout);
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.
The aio_suspend() function shall fail if:
EAGAIN 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.
The following sections are informative.
None.
None.
None.
None.
aio_read(3p), aio_write(3p), lio_listio(3p)
The Base Definitions volume of POSIX.1‐2017, aio.h(0p)
Portions of this text are reprinted and reproduced in electronic
form from IEEE Std 1003.1-2017, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The
Open Group Base Specifications Issue 7, 2018 Edition, Copyright
(C) 2018 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 .
Any typographical or formatting errors that appear in this page
are most likely to have been introduced during the conversion of
the source files to man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2017 AIO_SUSPEND(3P)
Pages that refer to this page: aio.h(0p)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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