internal bool TrySchedule()
{
if (_resource._users.Count < _resource.Capacity)
{
_handle = _resource._users.Add(this, _priority);
Env.ScheduleEvent(this);
return(true);
}
return(false);
}
internal RequestEvent(PreemptiveResource resource, double priority, bool preempt)
: base(resource.Env, priority)
{
_resource = resource;
_priority = new ReqPriority(priority, Env.Now, preempt, resource._nextVersion++);
_process = Env.ActiveProcess;
if (_resource._requestQueue.Count == 0 && TrySchedule())
{
return;
}
_handle = _resource._requestQueue.Add(this, _priority);
if (preempt && _resource._requestQueue.Min.Value.Equals(this))
{
var toPreempt = _resource._users.Min.Value;
if (ReqPriority.Comparer.Compare(toPreempt._priority, _priority) <= 0)
{
return;
}
toPreempt.Dispose();
toPreempt._process.Interrupt(new PreemptionInfo(_process, toPreempt.Time));
}
}
