/* Release resources belonging to task @p. */
void domain_destroy(struct domain *d)
{
struct domain **pd;
atomic_t old, new;
BUG_ON(!d->is_dying);
/* May be already destroyed, or get_domain() can race us. */
_atomic_set(old, 0);
_atomic_set(new, DOMAIN_DESTROYED);
old = atomic_compareandswap(old, new, &d->refcnt);
if ( _atomic_read(old) != 0 )
return;
/* Delete from task list and task hashtable. */
TRACE_1D(TRC_SCHED_DOM_REM, d->domain_id);
spin_lock(&domlist_update_lock);
pd = &domain_list;
while ( *pd != d )
pd = &(*pd)->next_in_list;
rcu_assign_pointer(*pd, d->next_in_list);
pd = &domain_hash[DOMAIN_HASH(d->domain_id)];
while ( *pd != d )
pd = &(*pd)->next_in_hashbucket;
rcu_assign_pointer(*pd, d->next_in_hashbucket);
spin_unlock(&domlist_update_lock);
/* Schedule RCU asynchronous completion of domain destroy. */
call_rcu(&d->rcu, complete_domain_destroy);
}
status_t
BTimeSource::GetTime(bigtime_t *performance_time,
bigtime_t *real_time,
float *drift)
{
PRINT(8, "CALLED BTimeSource::GetTime()\n");
if (fIsRealtime) {
*performance_time = *real_time = system_time();
*drift = 1.0f;
return B_OK;
}
// if (fBuf == 0) {
// PRINT(1, "BTimeSource::GetTime: fBuf == 0, name %s, id %ld\n",Name(),ID());
// *performance_time = *real_time = system_time();
// *drift = 1.0f;
// return B_OK;
// }
int32 index;
index = _atomic_read(&fBuf->readindex);
index &= (TS_INDEX_COUNT - 1);
*real_time = fBuf->realtime[index];
*performance_time = fBuf->perftime[index];
*drift = fBuf->drift[index];
// if (*real_time == 0) {
// *performance_time = *real_time = system_time();
// *drift = 1.0f;
// return B_OK;
// }
// printf("BTimeSource::GetTime timesource %ld, index %ld, perf %16Ld, real %16Ld, drift %2.2f\n", ID(), index, *performance_time, *real_time, *drift);
TRACE_TIMESOURCE("BTimeSource::GetTime timesource %" B_PRId32
", perf %16" B_PRId64 ", real %16" B_PRId64 ", drift %2.2f\n", ID(),
*performance_time, *real_time, *drift);
return B_OK;
}