private void EnumEntries(IEnumerator <E> it, PoolEntryCallback <T, C> callback)
{
while (it.HasNext())
{
E entry = it.Next();
callback.Process(entry);
if (entry.IsClosed())
{
RouteSpecificPool <T, C, E> pool = GetPool(entry.GetRoute());
pool.Remove(entry);
it.Remove();
}
}
}
/// <exception cref="System.IO.IOException"></exception>
/// <exception cref="System.Exception"></exception>
/// <exception cref="Sharpen.TimeoutException"></exception>
private E GetPoolEntryBlocking(T route, object state, long timeout, TimeUnit tunit
, PoolEntryFuture <E> future)
{
DateTime deadline = null;
if (timeout > 0)
{
deadline = Sharpen.Extensions.CreateDate(Runtime.CurrentTimeMillis() + tunit.ToMillis
(timeout));
}
this.Lock.Lock();
try
{
RouteSpecificPool <T, C, E> pool = GetPool(route);
E entry = null;
while (entry == null)
{
Asserts.Check(!this.isShutDown, "Connection pool shut down");
for (; ;)
{
entry = pool.GetFree(state);
if (entry == null)
{
break;
}
if (entry.IsClosed() || entry.IsExpired(Runtime.CurrentTimeMillis()))
{
entry.Close();
this.available.Remove(entry);
pool.Free(entry, false);
}
else
{
break;
}
}
if (entry != null)
{
this.available.Remove(entry);
this.leased.AddItem(entry);
return(entry);
}
// New connection is needed
int maxPerRoute = GetMax(route);
// Shrink the pool prior to allocating a new connection
int excess = Math.Max(0, pool.GetAllocatedCount() + 1 - maxPerRoute);
if (excess > 0)
{
for (int i = 0; i < excess; i++)
{
E lastUsed = pool.GetLastUsed();
if (lastUsed == null)
{
break;
}
lastUsed.Close();
this.available.Remove(lastUsed);
pool.Remove(lastUsed);
}
}
if (pool.GetAllocatedCount() < maxPerRoute)
{
int totalUsed = this.leased.Count;
int freeCapacity = Math.Max(this.maxTotal - totalUsed, 0);
if (freeCapacity > 0)
{
int totalAvailable = this.available.Count;
if (totalAvailable > freeCapacity - 1)
{
if (!this.available.IsEmpty())
{
E lastUsed = this.available.RemoveLast();
lastUsed.Close();
RouteSpecificPool <T, C, E> otherpool = GetPool(lastUsed.GetRoute());
otherpool.Remove(lastUsed);
}
}
C conn = this.connFactory.Create(route);
entry = pool.Add(conn);
this.leased.AddItem(entry);
return(entry);
}
}
bool success = false;
try
{
pool.Queue(future);
this.pending.AddItem(future);
success = future.Await(deadline);
}
finally
{
// In case of 'success', we were woken up by the
// connection pool and should now have a connection
// waiting for us, or else we're shutting down.
// Just continue in the loop, both cases are checked.
pool.Unqueue(future);
this.pending.Remove(future);
}
// check for spurious wakeup vs. timeout
if (!success && (deadline != null) && (deadline.GetTime() <= Runtime.CurrentTimeMillis
()))
{
break;
}
}
throw new TimeoutException("Timeout waiting for connection");
}
finally
{
this.Lock.Unlock();
}
}