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man/io_uring_cqe_nr.3
35 строк
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Jens Axboe
man: add io_uring_cqe_nr.3
19 янв 2026, 02:19
19 янв 2026, 02:19
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.\" Copyright (C) 2025 Jens Axboe <axboe@kernel.dk> .\" .\" SPDX-License-Identifier: LGPL-2.0-or-later .\" .TH io_uring_cqe_nr 3 "January 18, 2025" "liburing-2.12" "liburing Manual" .SH NAME io_uring_cqe_nr \- return the number of CQ ring slots consumed by a CQE .SH SYNOPSIS .nf .B #include <liburing.h> .PP .BI "unsigned io_uring_cqe_nr(const struct io_uring_cqe *" cqe ");" .fi .SH DESCRIPTION .PP The .BR io_uring_cqe_nr (3) function returns the number of CQ ring slots consumed by .IR cqe . For normal 16-byte CQEs, this returns 1. For 32-byte CQEs (when .B IORING_CQE_F_32 is set in the CQE flags), this returns 2. This function is useful when advancing the CQ ring with .BR io_uring_cq_advance (3) on rings that use .B IORING_SETUP_CQE_MIXED where both 16-byte and 32-byte CQEs may be present. .SH RETURN VALUE Returns 1 for normal CQEs, or 2 for 32-byte CQEs. .SH SEE ALSO .BR io_uring_cq_advance (3), .BR io_uring_cqe_seen (3), .BR io_uring_setup (2)