// Linear_Priority_Mapping.h,v 1.5 2003/07/21 23:51:38 dhinton Exp

// ============================================================================
//
// = LIBRARY
//   TAO
//
// = FILENAME
//   Linear_Priority_Mapping.h
//
// = DESCRIPTION
//   Declares the Linear_Priority_Mapping interface, as defined in the
//   RT-CORBA spec.
//
// = AUTHOR
//   Carlos O'Ryan (coryan@cs.wustl.edu)
//
// ============================================================================

#ifndef TAO_LINEAR_PRIORITY_MAPPING_H
#define TAO_LINEAR_PRIORITY_MAPPING_H
#include /**/ "ace/pre.h"

#include "tao/orbconf.h"

#include "rtcorba_export.h"
#include "Priority_Mapping.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

/**
 * @class TAO_Linear_Priority_Mapping
 *
 * @brief A simple implementation of the Priority_Mapping interface.
 *
 * This implementation uses linear mapping between the range of
 * priorities for a given scheduling class (ACE_SCHED_OTHER,
 * ACE_SCHED_FIFO, ACE_SCHED_RR) and the valid range of CORBA
 * priorities (0...32767)
 */
class TAO_RTCORBA_Export TAO_Linear_Priority_Mapping : public TAO_Priority_Mapping
{
public:
  /// Default constructor
  TAO_Linear_Priority_Mapping (long policy);

  /// The destructor
  virtual ~TAO_Linear_Priority_Mapping (void);

  virtual CORBA::Boolean
      to_native (RTCORBA::Priority corba_priority,
                 RTCORBA::NativePriority &native_priority);
  virtual CORBA::Boolean
      to_CORBA (RTCORBA::NativePriority native_priority,
                RTCORBA::Priority &corba_priority);

private:
  /// The scheduling policy
  long policy_;

  // The range
  int min_;
  int max_;
};

#if defined (__ACE_INLINE__)
# include "Linear_Priority_Mapping.i"
#endif /* __ACE_INLINE__ */

#endif /* TAO_HAS_CORBA_MESSAGING && TAO_HAS_CORBA_MESSAGING != 0 */

#include /**/ "ace/post.h"
#endif /* TAO_LINEAR_PRIORITY_MAPPING_H */
