.\" Copyright (C) 2025 Jens Axboe <axboe@kernel.dk>
.\"
.\" SPDX-License-Identifier: LGPL-2.0-or-later
.\"
.TH io_uring_cq_eventfd_enabled 3 "January 18, 2025" "liburing-2.4" "liburing Manual"
.SH NAME
io_uring_cq_eventfd_enabled \- check if eventfd notifications are enabled
.SH SYNOPSIS
.nf
.B #include <liburing.h>
.PP
.BI "bool io_uring_cq_eventfd_enabled(const struct io_uring *" ring ");"
.fi
.SH DESCRIPTION
.PP
The
.BR io_uring_cq_eventfd_enabled (3)
function returns whether eventfd notifications are currently enabled for
the io_uring instance specified by
.IR ring .

An eventfd can be registered with a ring using
.BR io_uring_register_eventfd (3)
or
.BR io_uring_register_eventfd_async (3).
Once registered, notifications can be temporarily disabled using
.BR io_uring_cq_eventfd_toggle (3).

.SH RETURN VALUE
Returns
.B true
if eventfd notifications are enabled, or
.B false
if disabled.
.SH SEE ALSO
.BR io_uring_register_eventfd (3),
.BR io_uring_register_eventfd_async (3),
.BR io_uring_cq_eventfd_toggle (3)