public T BorrowObject(long maxWaitMillisecs)
{
CheckClosed();
PooledObject <T> p = null;
bool blockWhenExhausted = this.blockWhenExhausted;
bool create;
while (p == null)
{
create = false;
if (blockWhenExhausted)
{
p = idleObjects.PollFirst();
if (p == null)
{
create = true;
p = Create();
}
if (p == null)
{
if (maxWaitMillisecs < 0)
{
p = idleObjects.TakeFirst();
}
else
{
p = idleObjects.PollFirst(TimeSpan.FromMilliseconds(maxWaitMillisecs));
}
}
if (p == null)
{
throw new NoSuchElementException("Timeout waiting for idle object");
}
if (!p.Allocate())
{
p = null;
}
}
else
{
p = idleObjects.PollFirst();
if (p == null)
{
create = true;
p = Create();
}
if (p == null)
{
throw new NoSuchElementException("Pool exhausted");
}
if (!p.Allocate())
{
p = null;
}
}
if (p != null)
{
try
{
factory.ActivateObject(p.TheObject);
}
catch (Exception e)
{
try
{
Destroy(p);
}
catch
{
// Ignore - activation failure is more important
}
p = null;
if (create)
{
NoSuchElementException nsee = new NoSuchElementException(
"Unable to activate object", e);
throw nsee;
}
}
if (p != null && TestOnBorrow)
{
bool validate = false;
Exception validationThrowable = null;
try
{
validate = factory.ValidateObject(p.TheObject);
}
catch (Exception ex)
{
PoolUtils.CheckRethrow(ex);
}
if (!validate)
{
try
{
Destroy(p);
}
catch
{
// Ignore - validation failure is more important
}
p = null;
if (create)
{
NoSuchElementException nsee = new NoSuchElementException(
"Unable to validate object", validationThrowable);
throw nsee;
}
}
}
}
}
return(p.TheObject);
}
