#include <sys/timerfd.h>int timerfd_create(intclockid, intflags);int timerfd_settime(intfd, intflags,const struct itimerspec *new_value,struct itimerspec *old_value);int timerfd_gettime(intfd, struct itimerspec *curr_value); DESCRIPTIONtop These system calls create and operate on a timer...