https://uogog.github.io/tags/%E9%AB%98%E5%B9%B6%E5%8F%91/ Recent content in 高并发 on UOG的BLOG Hugo zh-cn Tue, 21 Jul 2026 10:00:00 +0800 https://uogog.github.io/posts/libevent/ Tue, 21 Jul 2026 10:00:00 +0800 https://uogog.github.io/posts/libevent/ <h1 id="libevent-常用函数速查"> libevent 常用函数速查 <a class="heading-link" href="#libevent-%e5%b8%b8%e7%94%a8%e5%87%bd%e6%95%b0%e9%80%9f%e6%9f%a5"> <i class="fa-solid fa-link" aria-hidden="true" title="链接到标题"></i> <span class="sr-only">链接到标题</span> </a> </h1> <p>libevent 是一个轻量级、高性能的事件通知库，封装了 <code>select</code>/<code>poll</code>/<code>epoll</code>/<code>kqueue</code> 等底层多路复用机制，提供统一的事件驱动 API。</p> <hr> <h1 id="安装"> 安装 <a class="heading-link" href="#%e5%ae%89%e8%a3%85"> <i class="fa-solid fa-link" aria-hidden="true" title="链接到标题"></i> <span class="sr-only">链接到标题</span> </a> </h1> <h2 id="ubuntu--debian"> Ubuntu / Debian <a class="heading-link" href="#ubuntu--debian"> <i class="fa-solid fa-link" aria-hidden="true" title="链接到标题"></i> <span class="sr-only">链接到标题</span> </a> </h2> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">sudo apt install libevent-dev </span></span></code></pre></div><p>安装后头文件在 <code>/usr/include/event2/</code>，库文件为 <code>libevent_core.so</code> 和 <code>libevent_extra.so</code>。</p> <h2 id="源码编译"> 源码编译 <a class="heading-link" href="#%e6%ba%90%e7%a0%81%e7%bc%96%e8%af%91"> <i class="fa-solid fa-link" aria-hidden="true" title="链接到标题"></i> <span class="sr-only">链接到标题</span> </a> </h2> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">wget https://github.com/libevent/libevent/releases/download/release-2.1.12-stable/libevent-2.1.12-stable.tar.gz </span></span><span class="line"><span class="cl">tar xzf libevent-2.1.12-stable.tar.gz </span></span><span class="line"><span class="cl"><span class="nb">cd</span> libevent-2.1.12-stable </span></span><span class="line"><span class="cl">./configure --prefix<span class="o">=</span>/usr/local </span></span><span class="line"><span class="cl">make -j<span class="k">$(</span>nproc<span class="k">)</span> </span></span><span class="line"><span class="cl">sudo make install </span></span><span class="line"><span class="cl"><span class="c1"># ldconfig 更新动态库缓存</span> </span></span><span class="line"><span class="cl">sudo ldconfig </span></span></code></pre></div><h2 id="编译链接"> 编译链接 <a class="heading-link" href="#%e7%bc%96%e8%af%91%e9%93%be%e6%8e%a5"> <i class="fa-solid fa-link" aria-hidden="true" title="链接到标题"></i> <span class="sr-only">链接到标题</span> </a> </h2> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">gcc -o myapp myapp.c -levent </span></span><span class="line"><span class="cl"><span class="c1"># 如果使用了 bufferevent 等扩展功能：</span> </span></span><span class="line"><span class="cl">gcc -o myapp myapp.c -levent -levent_extra </span></span></code></pre></div><blockquote> <p><strong>注意</strong>：<code>-levent</code> 链接的是 <code>libevent_core.so</code>，bufferevent / evhttp / evdns 等功能在 <code>libevent_extra.so</code> 中，需要 <code>-levent_extra</code>。</p>