C++ timerfd
时间: 2023-09-08 16:13:48 浏览: 52
在C语言中,timerfd是一个用于创建定时器的系统调用。它可以与epoll结合使用,以实现定时任务的功能。timerfd_settime接口用于启动和停止定时器。通过设置it_interval和it_value字段的值来指定定时器的周期和首次超时时间。其中it_interval.tv_sec和it_interval.tv_nsec用于设置定时器的周期,单位是秒和纳秒;it_value.tv_sec和it_value.tv_nsec用于设置定时器的首次超时时间。例如,如果想要定时器每50毫秒超时一次,可以将it_interval.tv_nsec设置为50 * 1000 * 1000,并将it_value.tv_sec设置为2。这样定时器会在2秒后首次超时,并且之后每50毫秒超时一次。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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