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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON |
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io_uring_cq...ntfd_toggle(3) liburing Manual io_uring_cq...ntfd_toggle(3)
io_uring_cq_eventfd_toggle - toggle eventfd notifications on or
off
#include <liburing.h>
int io_uring_cq_eventfd_toggle(struct io_uring *ring, bool enabled);
The io_uring_cq_eventfd_toggle(3) function toggles eventfd
notifications for the io_uring instance specified by ring. If
enabled is true, eventfd notifications are enabled. If enabled is
false, they are disabled.
An eventfd must first be registered with the ring using
io_uring_register_eventfd(3) or io_uring_register_eventfd_async(3)
before this function can be used.
This can be useful when the application wants to temporarily stop
receiving eventfd notifications, for example during a batch
processing phase.
Returns 0 on success. On error, a negative errno value is
returned:
-EOPNOTSUPP
The kernel does not support toggling eventfd notifications,
or no eventfd is registered.
io_uring_register_eventfd(3), io_uring_register_eventfd_async(3),
io_uring_cq_eventfd_enabled(3)
This page is part of the liburing (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 2026-05-24. (At that time,
the date of the most recent commit that was found in the
repository was 2026-05-18.) 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 is not part of the original manual page), send a mail to
man-pages@man7.org
liburing-2.4 January 18, 2025io_uring_cq...ntfd_toggle(3)
Pages that refer to this page: io_uring_cq_eventfd_enabled(3), io_uring_cq_eventfd_toggle(3)
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HTML rendering created 2026-05-24 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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