/*
* The real-time timer, interrupting hz times per second.
*/
void
uinet_hardclock(void)
{
atomic_add_int((volatile int *)&ticks, 1);
/* hardclock_cpu(usermode);
*
* There is no need for the process accounting done in
* hardclock_cpu(). We only need the callout_tick() call, which is
* reproduced below.
*/
callout_tick();
tc_ticktock(1);
/* cpu_tick_calibration();
*
* There is no need for cpu_tick_calibration(), as we are operating
* as a fixed-rate ticker.
*/
/*
* If no separate statistics clock is available, run it from here.
*
* XXX: this only works for UP
*/
/* if (stathz == 0) {
* profclock(usermode, pc);
* statclock(usermode);
* }
*
* No need for profclock or statclock support.
*/
#ifndef UINET /* No DEVICE_POLLING or SW_WATCHDOG support under UINET */
#ifdef DEVICE_POLLING
hardclock_device_poll(); /* this is very short and quick */
#endif /* DEVICE_POLLING */
#ifdef SW_WATCHDOG
if (watchdog_enabled > 0 && --watchdog_ticks <= 0)
watchdog_fire();
#endif /* SW_WATCHDOG */
#endif /* UINET */
}
void* clock_intr_handler(void* arg)
{
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = 1000;
while(1){
bsd_ticks ++;
callout_tick();
host_thread_enter_wait_region();
nanosleep(&ts, NULL);
host_thread_exit_wait_region();
}
return NULL;
}
