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// $Id$
#include "tao/orbconf.h"
#if defined (TAO_HAS_RT_CORBA)
#include "tao/Linear_Priority_Mapping.h"
#include "tao/debug.h"
#include "ace/Sched_Params.h"
#if !defined (__ACE_INLINE__)
# include "tao/Linear_Priority_Mapping.i"
#endif /* ! __ACE_INLINE__ */
ACE_RCSID(tao, Linear_Priority_Mapping, "$Id$")
TAO_Linear_Priority_Mapping::TAO_Linear_Priority_Mapping (int policy)
: policy_ (policy)
{
this->min_ = ACE_Sched_Params::priority_min (this->policy_);
this->max_ = ACE_Sched_Params::priority_max (this->policy_);
}
TAO_Linear_Priority_Mapping::~TAO_Linear_Priority_Mapping (void)
{
}
CORBA::Boolean
TAO_Linear_Priority_Mapping::to_native (RTCORBA::Priority corba_priority,
RTCORBA::NativePriority &native_priority)
{
if (corba_priority < 0 || corba_priority > RTCORBA::maxPriority)
return 0;
native_priority =
this->min_
+ ((this->max_ - this->min_)
* corba_priority
/ (RTCORBA::maxPriority - RTCORBA::minPriority));
return 1;
}
CORBA::Boolean
TAO_Linear_Priority_Mapping::to_CORBA (RTCORBA::NativePriority native_priority,
RTCORBA::Priority &corba_priority)
{
if ((this->min_ < this->max_
&& (native_priority < this->min_
|| native_priority > this->max_))
|| (this->min_ > this->max_
&& (native_priority < this->max_
|| native_priority > this->min_)))
{
if (TAO_debug_level > 2)
ACE_DEBUG ((LM_DEBUG,
"TAO (%P|%t) - Linear_Priority_Mapping::to_CORBA: "
" priority %d out of range [%d,%d]\n",
native_priority, this->min_, this->max_));
return 0;
}
int delta = this->max_ - this->min_;
if (delta != 0)
{
corba_priority =
RTCORBA::minPriority
+ ((RTCORBA::maxPriority - RTCORBA::minPriority)
* (native_priority - this->min_) / delta);
}
else
{
// There is only one native priority.
if (native_priority != this->min_)
return 0;
corba_priority = RTCORBA::minPriority;
}
return 1;
}
#endif /* TAO_HAS_RT_CORBA */
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