Libuv

{{Short description|Software library for asynchronous I/O}}

{{Use dmy dates|date=August 2017}}

{{lowercase|title=libevent}}

{{Infobox software

| name = libuv

| logo = libuv.svg

| screenshot =

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| latest release version = {{wikidata|property|reference|edit|P348}}

| latest release date = {{release date and age |{{wikidata|qualifier|P348|P577}}}}

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| programming language = C

| operating system = Cross-platform

| platform = Linux, Android, Windows and OS X/Darwin,{{cite web |url=https://github.com/libuv/libuv |title=The libuv project page and source code| website=GitHub |accessdate=30 June 2016}} FreeBSD, OpenBSD

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| genre = I/O abstraction library

| license = MIT

}}

libuv is a multi-platform C library that provides support for asynchronous I/O based on event loops. It supports epoll(4), kqueue(2), Windows IOCP, Solaris event ports and Linux io_uring. It is primarily designed for use in Node.js but it is also used by other software projects.{{cite web |title=Projects that use libuv |url=https://github.com/libuv/libuv/blob/v1.x/LINKS.md |website=libuv GitHub project page| accessdate=13 January 2025}} It was originally an abstraction around libev or Microsoft IOCP, as libev does not support IOCP on Windows. In node-v0.9.0's version of libuv, the dependency on libev was removed.[https://nikhilm.github.io/uvbook/introduction.html#background An introduction to libuv]