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libuv
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<p>libuv is a multi-platform <a href="/facts/C_/Ky2No763">C</a> library that provides support for <a href="/facts/Asynchronous_I/O/6A7V3P89">asynchronous I/O</a> based on <a href="/facts/Event_loop/NNcN8Auy">event loops</a>. It supports <a href="/facts/Epoll/1Ve5Mqds">epoll(4)</a>, <a href="/facts/Kqueue/AbszxLuA">kqueue(2)</a>, Windows <a href="/facts/IOCP/N5CIu3Mh">IOCP</a>, <a href="/facts/Solaris_(operating_system)/KPfT98EJ">Solaris</a> event ports and <a href="/facts/Io_uring/gbFJKLIu">Linux io_uring</a>. It is primarily designed for use in <a href="/facts/Node.js/FKzhV4Qa">Node.js</a> but it is also used by other software projects. It was originally an abstraction around libev or Microsoft <a href="/facts/IOCP/N5CIu3Mh">IOCP</a>, as libev does not support IOCP on Windows. In node-v0.9.0's version of libuv, the dependency on libev was removed. </p>