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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
commit3d08cd331c1adcf0d917392f7e527b3f00511748 (patch)
tree312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man3/aio_suspend.3
parentAdding debian version 6.7-2. (diff)
downloadmanpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz
manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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-'\" t
-.\" Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl)
-.\" and Copyright (C) 2010 Michael Kerrisk <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: GPL-2.0-or-later
-.\"
-.TH aio_suspend 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-aio_suspend \- wait for asynchronous I/O operation or timeout
-.SH LIBRARY
-Real-time library
-.RI ( librt ", " \-lrt )
-.SH SYNOPSIS
-.nf
-.P
-.B "#include <aio.h>"
-.P
-.BI "int aio_suspend(const struct aiocb *const " aiocb_list "[], int " nitems ,
-.BI " const struct timespec *restrict " timeout );
-.fi
-.SH DESCRIPTION
-The
-.BR aio_suspend ()
-function suspends the calling thread until one of the following occurs:
-.IP \[bu] 3
-One or more of the asynchronous I/O requests in the list
-.I aiocb_list
-has completed.
-.IP \[bu]
-A signal is delivered.
-.IP \[bu]
-.I timeout
-is not NULL and the specified time interval has passed.
-(For details of the
-.I timespec
-structure, see
-.BR nanosleep (2).)
-.P
-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.)
-.P
-If
-.B CLOCK_MONOTONIC
-is supported, this clock is used to measure
-the timeout interval (see
-.BR clock_gettime (2)).
-.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 ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR aio_suspend ()
-T} Thread safety MT-Safe
-.TE
-.SH STANDARDS
-POSIX.1-2008.
-.SH HISTORY
-glibc 2.1.
-POSIX.1-2001.
-.P
-POSIX doesn't specify the parameters to be
-.IR restrict ;
-that is specific to glibc.
-.SH NOTES
-One can achieve polling by using a non-NULL
-.I timeout
-that specifies a zero time interval.
-.P
-If one or more of the asynchronous I/O operations specified in
-.I aiocb_list
-has already completed at the time of the call to
-.BR aio_suspend (),
-then the call returns immediately.
-.P
-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 BUGS
-The glibc implementation of
-.BR aio_suspend ()
-is not async-signal-safe,
-.\" FIXME . https://sourceware.org/bugzilla/show_bug.cgi?id=13172
-in violation of the requirements of POSIX.1.
-.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)