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// -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO
//
// = FILENAME
// Multi_Priority_Mapping.h
//
// = DESCRIPTION
// Declares a priority mapping to support cross platform communication.
//
// = AUTHOR
// Brian Mendel (brian.r.mendel@boeing.com)
//
// ============================================================================
#ifndef TAO_MULTI_PRIORITY_MAPPING_H
#define TAO_MULTI_PRIORITY_MAPPING_H
#include "tao/orbconf.h"
#include "tao/RTCORBA/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
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class TAO_Multi_Priority_Mapping
*
* @brief An implementation of the Priority_Mapping interface for communication
* between different platforms
*
* This implementation uses a custom 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_Multi_Priority_Mapping
: public TAO_Priority_Mapping
{
public:
/// Default constructor
/**
* @param base_native_priority The native priority to use for the highest
* priority endpoint.
* @param base_corba_priority The corba priority to use for the highest
* priority endpoint
* @param priority_spacing The priority increment to use between endpoints
* @param priorities_contiguous Some platforms do use contiguous priorities
* @param policy The scheduling policy to use.
*/
TAO_Multi_Priority_Mapping (int base_native_priority,
int base_corba_priority,
int priority_spacing = 1,
int priorities_contiguous = 1,
int policy = ACE_SCHED_FIFO);
/// The destructor
virtual ~TAO_Multi_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:
int base_native_priority_;
int base_corba_priority_;
// The base settings
const int priority_spacing_;
const int priorities_contiguous_;
/// The scheduling policy
int policy_;
int const min_;
int const max_;
// The range
};
TAO_END_VERSIONED_NAMESPACE_DECL
#endif /* TAO_HAS_CORBA_MESSAGING && TAO_HAS_CORBA_MESSAGING != 0 */
#endif /* TAO_MULTI_PRIORITY_MAPPING_H */
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