摘要：
https://qnaplus.com/implement-periodic-timer-linux/ 阅读全文
摘要：
https://stackoverflow.com/questions/6970224/providing-passing-argument-to-signal-handler This is a really old question but I think I can show you a ni 阅读全文
摘要：
https://blog.csdn.net/lu_embedded/article/details/53080496 阅读全文