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摘要： POLL(2)NAME poll，ppoll —— 等待文件描述符上的事件SYNOPSIS#include <poll.h>int poll(struct pollfd *fds, nfds_t nfds, int timeout);#define _GNU_SOURCE#include <poll.h>int ppoll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout, const sigset_t *sigmask);DESCRIPTIONpoll执行类似于select的任务：等待文件描 阅读全文