/
githubmirror
/
liburing
Обзор
Документация
Войти
/
githubmirror
/
liburing
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
master
man/io_uring_memory_size_params.3
45 строк
1 KB
Jens Axboe
man: add io_uring_memory_size_params.3
19 янв 2026, 02:26
19 янв 2026, 02:26
9cbcc6b
Код
Авторство
О чём код?
.\" Copyright (C) 2025 Jens Axboe <axboe@kernel.dk> .\" .\" SPDX-License-Identifier: LGPL-2.0-or-later .\" .TH io_uring_memory_size_params 3 "January 18, 2025" "liburing-2.11" "liburing Manual" .SH NAME io_uring_memory_size_params \- get memory size needed for a ring with params .SH SYNOPSIS .nf .B #include <liburing.h> .PP .BI "ssize_t io_uring_memory_size_params(unsigned " entries ", struct io_uring_params *" p ");" .fi .SH DESCRIPTION .PP The .BR io_uring_memory_size_params (3) function returns the total memory size needed for an io_uring ring with .I entries entries and the parameters specified in .IR p . This is useful for applications that want to pre-allocate memory for a ring or want to know the memory footprint before creating a ring. This function provides more control than .BR io_uring_memory_size (3) by allowing the caller to specify full ring parameters including CQ size via .I p->cq_entries when .B IORING_SETUP_CQSIZE is set in .IR p->flags . .SH RETURN VALUE Returns the required memory size in bytes on success, or a negative errno value on error. .TP .B -EINVAL Invalid entries value (0 or too large without IORING_SETUP_CLAMP). .SH SEE ALSO .BR io_uring_memory_size (3), .BR io_uring_mlock_size_params (3), .BR io_uring_queue_init_params (3)