Movatterモバイル変換

io_uring_prep_futex_waitv(3) — Linux manual page

io_uring_prep_futex_waitv(3) liburing Manualio_uring_prep_futex_waitv(3)

NAME        top

       io_uring_prep_futex_waitv - prepare a futex waitv request

SYNOPSIS        top

#include <linux/futex.h>#include <unistd.h>#include <liburing.h>void io_uring_prep_futex_waitv(struct io_uring_sqe *sqe,struct futex_waitv *futexv,uint32_tnr_futex,unsigned intflags);

DESCRIPTION        top

       Theio_uring_prep_futex_waitv(3) function prepares a futex wait       request for multiple futexes at the same time.  The submission       queue entrysqe is setup for waiting on all futexes given byfutexv andnr_futex is the number of futexes in that array.flags       must be set to the io_uring specific futex flags.       Unlikeio_uring_prep_futex_wait(3), the desired bitset mask and       values are passed infutexv.flags are currently unused and hence0must be passed.       This function prepares an asyncfutex(2) waitv request. See that       man page for details.       Available since kernel 6.7.

RETURN VALUE        top

       None

ERRORS        top

       The CQEres field will contain the result of the operation. See       the related man page for details on possible values. Note that       where synchronous system calls will return-1on failure and seterrno to the actual error value, io_uring never useserrno.       Instead it returns the negatederrno directly in the CQEres       field.

NOTES        top

       Unlike the sync futex syscalls that wait on a futex, io_uring does       not support passing in a timeout for the request. Instead,       applications are encouraged to use a linked timeout to abort the       futex request at a given time, if desired.

SEE ALSO        top

io_uring_get_sqe(3),io_uring_submit(3),io_uring_prep_futex_wait(3),io_uring_prep_futex_wake(3),io_uring_prep_link_timeout(3),futex(2)futex2(2)

COLOPHON        top

       This page is part of theliburing (A library for io_uring)       project.  Information about the project can be found at        ⟨https://github.com/axboe/liburing⟩.  If you have a bug report for       this manual page, send it to io-uring@vger.kernel.org.  This page       was obtained from the project's upstream Git repository       ⟨https://github.com/axboe/liburing⟩ on 2025-08-11.  (At that time,       the date of the most recent commit that was found in the       repository was 2025-08-02.)  If you discover any rendering       problems in this HTML version of the page, or you believe there is       a better or more up-to-date source for the page, or you have       corrections or improvements to the information in this COLOPHON       (which isnot part of the original manual page), send a mail to       man-pages@man7.orgliburing-2.5                   Sep 29, 2023io_uring_prep_futex_waitv(3)

Pages that refer to this page:io_uring_prep_futex_wait(3), io_uring_prep_futex_waitv(3), io_uring_prep_futex_wake(3)

HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH.