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// $Id$
#include "Routing_Slip_Queue.h"
#if ! defined (__ACE_INLINE__)
#include "Routing_Slip_Queue.inl"
#endif /* __ACE_INLINE__ */
#include "tao/debug.h"
#include "ace/Dynamic_Service.h"
//#define DEBUG_LEVEL 9
#define DEBUG_LEVEL TAO_debug_level
namespace TAO_Notify
{
Routing_Slip_Queue::Routing_Slip_Queue (size_t allowed)
: allowed_ (allowed)
, active_ (0)
{
}
Routing_Slip_Queue::~Routing_Slip_Queue ()
{
}
void
Routing_Slip_Queue::add (const Routing_Slip_Ptr & routing_slip)
{
Guard guard (internals_);
ACE_ASSERT (guard.locked()); // check recursion
if (this->allowed_ == 0)
{
++this->active_;
guard.release ();
routing_slip->at_front_of_persist_queue ();
// guard.acquire ();
}
else
{
this->queue_.enqueue_tail (routing_slip);
dispatch (guard);
}
}
void Routing_Slip_Queue::complete ()
{
Guard guard (internals_);
ACE_ASSERT (guard.locked()); // check recursion
ACE_ASSERT (this->active_ > 0);
--this->active_;
dispatch (guard);
}
void
Routing_Slip_Queue::dispatch (Guard & guard)
{
// we start out pretty nice,
// but the more work we do for other people
// the less nice we get.
size_t nice = this->allowed_ + 1;
while (nice > 0 && (this->active_ < this->allowed_))
{
if (dispatch_one (guard))
{
--nice;
}
else
{
// that's about as nice as I get.
nice = 0;
}
}
}
bool
Routing_Slip_Queue::dispatch_one (Guard & guard)
{
bool ok = false;
Routing_Slip_Ptr routing_slip;
if (this->queue_.dequeue_head (routing_slip) == 0)
{
++this->active_;
guard.release ();
routing_slip->at_front_of_persist_queue ();
guard.acquire ();
}
return ok;
}
void
Routing_Slip_Queue::set_allowed (size_t allowed)
{
Guard guard (internals_);
size_t allowed_was = this->allowed_;
this->allowed_ = allowed;
if (allowed == 0 && allowed_was != 0)
{
while (dispatch_one (guard))
{
; // work happens in dispatc_one
}
}
else
{
dispatch (guard);
}
}
} // namespace
#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)
template class ACE_Node<TAO_Notify::Routing_Slip_Ptr>;
template class ACE_Unbounded_Queue<TAO_Notify::Routing_Slip_Ptr>;
template class ACE_Unbounded_Queue_Iterator<TAO_Notify::Routing_Slip_Ptr>;
#elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA)
#pragma instantiate ACE_Node<TAO_Notify::Routing_Slip_Ptr>
#pragma instantiate ACE_Unbounded_Queue<TAO_Notify::Routing_Slip_Ptr>
#pragma instantiate ACE_Unbounded_Queue_Iterator<TAO_Notify::Routing_Slip_Ptr>
#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */
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