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// $Id$
#include "tao/Leader_Follower_Flushing_Strategy.h"
#include "tao/LF_Follower.h"
#include "tao/Leader_Follower.h"
#include "tao/Transport.h"
#include "tao/Queued_Message.h"
#include "tao/ORB_Core.h"
ACE_RCSID (tao,
Leader_Follower_Flushing_Strategy,
"$Id$")
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
int
TAO_Leader_Follower_Flushing_Strategy::schedule_output (TAO_Transport *transport)
{
return transport->schedule_output_i ();
}
int
TAO_Leader_Follower_Flushing_Strategy::cancel_output (
TAO_Transport *transport)
{
return transport->cancel_output_i ();
}
int
TAO_Leader_Follower_Flushing_Strategy::flush_message (
TAO_Transport *transport,
TAO_Queued_Message *msg,
ACE_Time_Value *max_wait_time)
{
TAO_Leader_Follower &leader_follower =
transport->orb_core ()->leader_follower ();
return leader_follower.wait_for_event (msg, transport, max_wait_time);
}
int
TAO_Leader_Follower_Flushing_Strategy::flush_transport (
TAO_Transport *transport,
ACE_Time_Value *max_wait_time)
{
try
{
TAO_ORB_Core * const orb_core = transport->orb_core ();
if (max_wait_time == 0)
{
// In case max_wait_time==0 it doesn't make sense to run
// while loop depending on transport->queue_is_empty ()
// since in multi-threaded application it can easily happen
// that the other thread will run the orb and drain the
// queue in the transport we're coping with here. So, that
// transport->queue_is_empty () will return false but before
// we get a chance to run the orb the queue in the transport
// will become empty and we will wait forever. Instead while
// loop depending on reactor->work_pending () is much safer
// since transport will return 0 (letting the reactor know
// about more pending work) when handling output/timeout as
// long as its queue is not empty.
while (orb_core->reactor ()->work_pending ())
{
ACE_Time_Value tv (0, 100);
if (orb_core->run (&tv, 1) == -1)
return -1;
}
}
else
{
if (orb_core->run (max_wait_time, 1) == -1)
return -1;
if (max_wait_time != 0) {
if (*max_wait_time <= ACE_Time_Value::zero) {
errno = ETIME;
return -1;
}
}
}
}
catch (const ::CORBA::Exception&)
{
return -1;
}
return 0;
}
TAO_END_VERSIONED_NAMESPACE_DECL
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