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AIO_SUSPEND(3) Linux Programmer's Manual AIO_SUSPEND(3)
aio_suspend - wait for asynchronous I/O operation or timeout
#include <aio.h>
int aio_suspend(const struct aiocb * const aiocb_list[],
int nitems, const struct timespec *timeout);
Link with -lrt.
The aio_suspend() function suspends the calling thread until one
of the following occurs:
* One or more of the asynchronous I/O requests in the list
aiocb_list has completed.
* A signal is delivered.
* timeout is not NULL and the specified time interval has
passed. (For details of the timespec structure, see
nanosleep(2).)
The nitems argument specifies the number of items in aiocb_list.
Each item in the list pointed to by aiocb_list must be either
NULL (and then is ignored), or a pointer to a control block on
which I/O was initiated using aio_read(3), aio_write(3), or
lio_listio(3). (See aio(7) for a description of the aiocb
structure.)
If CLOCK_MONOTONIC is supported, this clock is used to measure
the timeout interval (see clock_gettime(3)).
If this function returns after completion of one of the I/O
requests specified in aiocb_list, 0 is returned. Otherwise, -1
is returned, and errno is set to indicate the error.
EAGAIN The call timed out before any of the indicated operations
had completed.
EINTR The call was ended by signal (possibly the completion
signal of one of the operations we were waiting for); see
signal(7).
ENOSYS aio_suspend() is not implemented.
The aio_suspend() function is available since glibc 2.1.
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────┼───────────────┼─────────┤
│aio_suspend() │ Thread safety │ MT-Safe │
└──────────────┴───────────────┴─────────┘
POSIX.1-2001, POSIX.1-2008.
One can achieve polling by using a non-NULL timeout that
specifies a zero time interval.
If one or more of the asynchronous I/O operations specified in
aiocb_list has already completed at the time of the call to
aio_suspend(), then the call returns immediately.
To determine which I/O operations have completed after a
successful return from aio_suspend(), use aio_error(3) to scan
the list of aiocb structures pointed to by aiocb_list.
The glibc implementation of aio_suspend() is not async-signal-
safe, in violation of the requirements of POSIX.1.
aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3),
aio_return(3), aio_write(3), lio_listio(3), aio(7), time(7)
This page is part of release 5.10 of the Linux man-pages project.
A description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
2017-09-15 AIO_SUSPEND(3)
Pages that refer to this page: aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_return(3), aio_write(3), lio_listio(3), aio(7), signal-safety(7), system_data_types(7)
Copyright and license for this manual page
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