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//=============================================================================
/**
* @file Continuous_Priority_Mapping.h
*
* $Id$
*
* @author Irfan Pyarali
*/
// ===================================================================
#ifndef TAO_CONTINUOUS_PRIORITY_MAPPING_H
#define TAO_CONTINUOUS_PRIORITY_MAPPING_H
#include /**/ "ace/pre.h"
#include "tao/orbconf.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#if defined (TAO_HAS_CORBA_MESSAGING) && TAO_HAS_CORBA_MESSAGING != 0
#include "rtcorba_export.h"
#include "Priority_Mapping.h"
/**
* @class TAO_Continuous_Priority_Mapping
*
* @brief Maps the first n CORBA priorities to the range of native
* priorities, where n is the number of native priorities.
*
* The lowest native priority is mapped to CORBA priority 0, next
* higher native priority is mapped to CORBA priority 1, and so
* on. Since in all the operating systems where TAO is supported the
* native priority set contains less than 32767 priorities, part of
* the CORBA priority range is left unused. Consider NT as an
* example. NT native priorities -15 -2 -1 0 1 2 15 are mapped to
* CORBA priorities 0 1 2 3 4 5 6, respectively, and the rest of the
* CORBA priority range is not used.
*
* This class was previously called Direct_Priority_Mapping.
*
* \nosubgrouping
*
**/
class TAO_RTCORBA_Export TAO_Continuous_Priority_Mapping
: public TAO_Priority_Mapping
{
public:
/// Constructor.
TAO_Continuous_Priority_Mapping (int policy = ACE_SCHED_OTHER);
/// Destructor.
~TAO_Continuous_Priority_Mapping (void);
/// Convert CORBA priority to native priority.
CORBA::Boolean to_native (RTCORBA::Priority corba_priority,
RTCORBA::NativePriority &native_priority);
/// Convert native priority to CORBA priority.
CORBA::Boolean to_CORBA (RTCORBA::NativePriority native_priority,
RTCORBA::Priority &corba_priority);
private:
int policy_;
int min_;
int max_;
};
#if defined (__ACE_INLINE__)
# include "Continuous_Priority_Mapping.i"
#endif /* __ACE_INLINE__ */
#endif /* TAO_HAS_CORBA_MESSAGING && TAO_HAS_CORBA_MESSAGING != 0 */
#include /**/ "ace/post.h"
#endif /* TAO_CONTINUOUS_PRIORITY_MAPPING_H */
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