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// -*- C++ -*-
// $Id$
#include "tao/Sync_Strategies.h"
#include "tao/Buffering_Constraint_Policy.h"
#include "tao/Stub.h"
#include "tao/ORB_Core.h"
#include "tao/debug.h"
#if !defined (__ACE_INLINE__)
# include "tao/Sync_Strategies.i"
#endif /* ! __ACE_INLINE__ */
ACE_RCSID(tao, Sync_Strategies, "$Id$")
TAO_Sync_Strategy::~TAO_Sync_Strategy (void)
{
}
// ****************************************************************
int
TAO_Transport_Sync_Strategy::
must_queue (int)
{
return 0;
}
int
TAO_Transport_Sync_Strategy::
buffering_constraints_reached (TAO_Stub *,
size_t ,
size_t ,
int &must_flush,
const ACE_Time_Value &,
int &set_timer,
ACE_Time_Value &)
{
set_timer = 0;
must_flush = 1;
return 1;
}
#if (TAO_HAS_BUFFERING_CONSTRAINT_POLICY == 1)
// ****************************************************************
int
TAO_Eager_Buffering_Sync_Strategy::
must_queue (int)
{
return 1;
}
int
TAO_Eager_Buffering_Sync_Strategy::
buffering_constraints_reached (TAO_Stub *stub,
size_t msg_count,
size_t total_bytes,
int &must_flush,
const ACE_Time_Value ¤t_deadline,
int &set_timer,
ACE_Time_Value &new_deadline)
{
must_flush = 0;
set_timer = 0;
CORBA::Policy_var bcp_policy = stub->buffering_constraint ();
TAO::BufferingConstraintPolicy_var bcp =
TAO::BufferingConstraintPolicy::_narrow (bcp_policy.in());
TAO_Buffering_Constraint_Policy *buffering_constraint_policy =
ACE_dynamic_cast (TAO_Buffering_Constraint_Policy *, bcp.in ());
if (buffering_constraint_policy == 0)
return 1;
TAO::BufferingConstraint buffering_constraint;
buffering_constraint_policy->get_buffering_constraint (buffering_constraint);
if (buffering_constraint.mode == TAO::BUFFER_FLUSH)
{
must_flush = 1;
return 1;
}
int constraints_reached = 0;
if (ACE_BIT_ENABLED (buffering_constraint.mode,
TAO::BUFFER_MESSAGE_COUNT)
&& msg_count >= buffering_constraint.message_count)
constraints_reached = 1;
if (ACE_BIT_ENABLED (buffering_constraint.mode,
TAO::BUFFER_MESSAGE_BYTES)
&& total_bytes >= buffering_constraint.message_bytes)
constraints_reached = 1;
if (this->timer_check (buffering_constraint,
current_deadline,
set_timer,
new_deadline) != 0)
constraints_reached = 1;
return constraints_reached;
}
int
TAO_Eager_Buffering_Sync_Strategy::
timer_check (const TAO::BufferingConstraint &buffering_constraint,
const ACE_Time_Value ¤t_deadline,
int &set_timer,
ACE_Time_Value &new_deadline)
{
set_timer = 0;
if (!ACE_BIT_ENABLED (buffering_constraint.mode,
TAO::BUFFER_TIMEOUT))
{
return 0;
}
// Compute the next deadline...
ACE_Time_Value now = ACE_OS::gettimeofday ();
ACE_Time_Value timeout =
this->time_conversion (buffering_constraint.timeout);
new_deadline = now + timeout;
// Check if the new deadline is more stringent, or if the deadline
// has expired and thus must be reset anyway.
if (current_deadline > new_deadline
|| current_deadline < now)
{
set_timer = 1;
}
// ... if there is no deadline we don't want to schedule output (the
// deadline will be set because set_timer is set to 1 in that case).
// If there is a deadline but but it has not been reached, we
// don't want to schedule any output either...
if (current_deadline == ACE_Time_Value::zero
|| current_deadline >= now)
{
return 0;
}
if (TAO_debug_level > 6)
{
ACE_DEBUG ((LM_DEBUG,
"TAO (%P|%t) - TAO_Eager_Buffering_Sync_Strategy::timer_check, "
"Now = %u, Current = %u, New = %u\n",
now.msec (), current_deadline.msec (),
new_deadline.msec ()));
}
return 1;
}
ACE_Time_Value
TAO_Eager_Buffering_Sync_Strategy::
time_conversion (const TimeBase::TimeT &time)
{
TimeBase::TimeT seconds = time / 10000000u;
TimeBase::TimeT microseconds = (time % 10000000u) / 10;
return ACE_Time_Value (ACE_U64_TO_U32 (seconds),
ACE_U64_TO_U32 (microseconds));
}
// ****************************************************************
int
TAO_Delayed_Buffering_Sync_Strategy::
must_queue (int queue_empty)
{
// If the queue is empty we want to send immediately
return !queue_empty;
}
#endif /* TAO_HAS_BUFFERING_CONSTRAINT_POLICY == 1 */
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