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-.\" Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl)
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-.\"
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-.\"
-.TH AIO_SUSPEND 3 2012-05-08 "" "Linux Programmer's Manual"
-.SH NAME
-aio_suspend \- wait for asynchronous I/O operation or timeout
-.SH SYNOPSIS
-.nf
-.sp
-.B "#include <aio.h>"
-.sp
-.BI "int aio_suspend(const struct aiocb * const " aiocb_list [],
-.br
-.BI " int " nitems ", const struct timespec *" timeout );
-.sp
-Link with \fI\-lrt\fP.
-.fi
-.SH DESCRIPTION
-The
-.BR aio_suspend ()
-function suspends the calling thread until one of the following occurs:
-.IP * 3
-One or more of the asynchronous I/O requests in the list
-.I aiocb_list
-has completed.
-.IP *
-A signal is delivered.
-.IP *
-.I timeout
-is not NULL and the specified time interval has passed.
-(For details of the
-.I timespec
-structure, see
-.BR nanosleep (2).)
-.LP
-The
-.I nitems
-argument specifies the number of items in
-.IR aiocb_list .
-Each item in the list pointed to by
-.I aiocb_list
-must be either NULL (and then is ignored),
-or a pointer to a control block on which I/O was initiated using
-.BR aio_read (3),
-.BR aio_write (3),
-or
-.BR lio_listio (3).
-(See
-.BR aio (7)
-for a description of the
-.I aiocb
-structure.)
-.LP
-If
-.B CLOCK_MONOTONIC
-is supported, this clock is used to measure
-the timeout interval (see
-.BR clock_gettime (3)).
-.SH RETURN VALUE
-If this function returns after completion of one of the I/O
-requests specified in
-.IR aiocb_list ,
-0 is returned.
-Otherwise, \-1 is returned, and
-.I errno
-is set to indicate the error.
-.SH ERRORS
-.TP
-.B EAGAIN
-The call timed out before any of the indicated operations
-had completed.
-.TP
-.B EINTR
-The call was ended by signal
-(possibly the completion signal of one of the operations we were
-waiting for); see
-.BR signal (7).
-.TP
-.B ENOSYS
-.BR aio_suspend ()
-is not implemented.
-.SH VERSIONS
-The
-.BR aio_suspend ()
-function is available since glibc 2.1.
-.SH CONFORMING TO
-POSIX.1-2001, POSIX.1-2008.
-.SH NOTES
-One can achieve polling by using a non-NULL
-.I timeout
-that specifies a zero time interval.
-
-If one or more of the asynchronous I/O operations specified in
-.IR aiocb_list
-has already completed at the time of the call to
-.BR aio_suspend (),
-then the call returns immediately.
-
-To determine which I/O operations have completed
-after a successful return from
-.BR aio_suspend (),
-use
-.BR aio_error (3)
-to scan the list of
-.I aiocb
-structures pointed to by
-.IR aiocb_list .
-.SH SEE ALSO
-.BR aio_cancel (3),
-.BR aio_error (3),
-.BR aio_fsync (3),
-.BR aio_read (3),
-.BR aio_return (3),
-.BR aio_write (3),
-.BR lio_listio (3),
-.BR aio (7),
-.BR time (7)
-.SH COLOPHON
-This page is part of release 3.79 of the Linux
-.I man-pages
-project.
-A description of the project,
-information about reporting bugs,
-and the latest version of this page,
-can be found at
-\%http://www.kernel.org/doc/man\-pages/.
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