TIMER_SETTIME(2) NAME timer_settime, timer_gettime - arm/disarm and fetch state of POSIX per-process timer SYNOPSIS #include <time.h> int timer_settime(timer_t timerid, int flags, const struct itimerspec *new_value, struct itimerspec *old_value); int timer_gettime(timer_t timerid, struct itimerspec *curr_value); ... ERRORS ... EINVAL timerid is invalid. Signed-off-by: chao an <anchao@xiaomi.com>