用C语言写的linux下的ping程序，使用nanosleep()判断icmp超时，未使用信号量

一个UNIX进程间通讯的程序，使用了信号量来解决操作系统的消费者与生产者问题，使用了fork,wait,nanosleep,sempo等unix函数。-a UNIX inter-process communication, the use of the signal operating system to solve the volume of consumers and producers, the use of the fork, wait, nanosleep, sempo other u

arm linux平台下延时函数精度测试，对usleep、nanosleep、select三种方法进行对比分析，可直接用于各种arm linux平台，需要精确延时的帮助很大-arm linux platform, precision time delay function testing, usleep, nanosleep, select three methods were compared, can be used for a variety of arm linux platform,

As you have learnt that sleep( )/usleep()/nanosleep() are not good to delay a process. Timers can provide more accurate time control in applications. In this lab, you will explore POSIX timers and signal programming, experience the timer drift. The