internal override void DoJob(ref Worker wr, Cont <T> tK)
{
var l = this.l;
Spin:
var state = l.State;
if (state == Lock.Locked)
{
goto Spin;
}
if (state != Interlocked.CompareExchange(ref l.State, Lock.Locked, state))
{
goto Spin;
}
if (state == Lock.Free)
{
goto GotIt;
}
var waiter = new GotIt(this.l, this.tF, tK);
var tail = l.Waiters;
if (tail == null)
{
waiter.Next = waiter;
}
else
{
waiter.Next = tail.Next;
tail.Next = waiter;
}
l.Waiters = waiter;
l.State = Lock.Held;
return;
GotIt:
// We keep the lock in Locked stated for the duration of the function
// call. This avoids doing a second interlocked operation.
T value;
try {
value = this.tF.Invoke(null);
} catch (Exception e) {
tK = new FailCont <T>(tK, e);
value = default(T);
}
l.State = Lock.Free;
Cont.Do(tK, ref wr, value);
}
internal override void DoJob(ref Worker wr, Cont <T> tK)
{
var l = this.l;
var tKPrime = new Cont(l, tK);
Spin:
var state = l.State;
if (state == Lock.Locked)
{
goto Spin;
}
if (state != Interlocked.CompareExchange(ref l.State, state + 1, state))
{
goto Spin;
}
if (state == Lock.Free)
{
goto GotIt;
}
var waiter = new GotIt(tKPrime, this.tJ);
var tail = l.Waiters;
if (tail == null)
{
waiter.Next = waiter;
}
else
{
waiter.Next = tail.Next;
tail.Next = waiter;
}
l.Waiters = waiter;
l.State = Lock.Held;
return;
GotIt:
wr.Handler = tKPrime;
this.tJ.DoJob(ref wr, tKPrime);
}
public virtual string info(string plus = null)
{
return(string.Format(plus + "Title: {0}\nRuntime: {1}\nComments: {2}\n rented {3}", Title, PlayingTime, Comment, GotIt.ToString()));
}
