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man/io_uring_cq_eventfd_enabled.3
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Jens Axboe
man: add io_uring_cq_eventfd_enabled.3
19 янв 2026, 02:20
19 янв 2026, 02:20
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.\" 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)