예제 #1
0
        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);
            }
        }
예제 #2
0
 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);
             }
         }
     }
 }