public bool Acquire(int units, int timeout)
{
Monitor.Enter(mon);
try
{
if (q.Count == 0 && counter >= units)
{
counter -= units;
return(true);
}
if (!TimeoutInstant.ShouldWait(timeout))
{
return(false);
}
var node = q.AddLast(new Request(units));
var toi = new TimeoutInstant(timeout);
while (true)
{
try
{
SyncUtils.Wait(mon, node.Value.condition, toi.Remaining);
}
catch (ThreadInterruptedException)
{
if (node.Value.ready)
{
Thread.CurrentThread.Interrupt();
return(true);
}
q.Remove(node);
grantAllAvailable();
throw;
}
if (node.Value.ready)
{
return(true);
}
if (toi.IsTimeout)
{
q.Remove(node);
grantAllAvailable();
return(false);
}
}
}
finally
{
Monitor.Exit(mon);
}
}
public bool Wait(int timeout)
{
if (signaled)
{
return(true);
}
if (!TimeoutInstant.ShouldWait(timeout))
{
return(false);
}
lock (mon)
{
waiters += 1;
Interlocked.MemoryBarrier();
if (signaled == true)
{
waiters -= 1;
return(true);
}
TimeoutInstant ti = new TimeoutInstant(timeout);
int myVersion = setVersion;
while (true)
{
try
{
Monitor.Wait(mon, ti.Remaining);
}
catch (Exception)
{
waiters -= 1;
throw;
}
if (signaled || myVersion != setVersion)
{
waiters -= 1;
return(true);
}
if (ti.IsTimeout)
{
waiters -= 1;
return(false);
}
}
}
}