diff options
Diffstat (limited to 'i3status.c')
| -rw-r--r-- | i3status.c | 21 |
1 files changed, 14 insertions, 7 deletions
@@ -62,6 +62,9 @@ cfg_t *cfg, *cfg_general, *cfg_section; void **cur_instance; +pthread_cond_t i3status_sleep_cond = PTHREAD_COND_INITIALIZER; +pthread_mutex_t i3status_sleep_mutex = PTHREAD_MUTEX_INITIALIZER; + /* * Set the exit_upon_signal flag, because one cannot do anything in a safe * manner in a signal handler (e.g. fprintf, which we really want to do for @@ -549,6 +552,7 @@ int main(int argc, char *argv[]) { char buffer[4096]; void **per_instance = calloc(cfg_size(cfg, "order"), sizeof(*per_instance)); + pthread_mutex_lock(&i3status_sleep_mutex); while (1) { if (exit_upon_signal) { @@ -684,13 +688,16 @@ int main(int argc, char *argv[]) { fflush(stdout); /* To provide updates on every full second (as good as possible) - * we don’t use sleep(interval) but we sleep until the next - * second (with microsecond precision) plus (interval-1) - * seconds. We also align to 60 seconds modulo interval such + * we don’t use sleep(interval) but we sleep until the next second. + * We also align to 60 seconds modulo interval such * that we start with :00 on every new minute. */ - struct timeval current_timeval; - gettimeofday(¤t_timeval, NULL); - struct timespec ts = {interval - 1 - (current_timeval.tv_sec % interval), (10e5 - current_timeval.tv_usec) * 1000}; - nanosleep(&ts, NULL); + struct timespec ts; + clock_gettime(CLOCK_REALTIME, &ts); + ts.tv_sec += interval - (ts.tv_sec % interval); + ts.tv_nsec = 0; + + /* Sleep to absolute time 'ts', unless the condition + * 'i3status_sleep_cond' is signaled from another thread */ + pthread_cond_timedwait(&i3status_sleep_cond, &i3status_sleep_mutex, &ts); } } |