Continuous_Priority_Mapping.h
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00001 // -*- C++ -*- 00002 00003 //============================================================================= 00004 /** 00005 * @file Continuous_Priority_Mapping.h 00006 * 00007 * $Id: Continuous_Priority_Mapping.h 71473 2006-03-10 07:19:20Z jtc $ 00008 * 00009 * @author Irfan Pyarali 00010 */ 00011 // =================================================================== 00012 00013 #ifndef TAO_CONTINUOUS_PRIORITY_MAPPING_H 00014 #define TAO_CONTINUOUS_PRIORITY_MAPPING_H 00015 00016 #include /**/ "ace/pre.h" 00017 00018 #include "tao/orbconf.h" 00019 00020 #if !defined (ACE_LACKS_PRAGMA_ONCE) 00021 # pragma once 00022 #endif /* ACE_LACKS_PRAGMA_ONCE */ 00023 00024 #if defined (TAO_HAS_CORBA_MESSAGING) && TAO_HAS_CORBA_MESSAGING != 0 00025 00026 #include "tao/RTCORBA/rtcorba_export.h" 00027 #include "tao/RTCORBA/Priority_Mapping.h" 00028 00029 TAO_BEGIN_VERSIONED_NAMESPACE_DECL 00030 00031 /** 00032 * @class TAO_Continuous_Priority_Mapping 00033 * 00034 * @brief Maps the first n CORBA priorities to the range of native 00035 * priorities, where n is the number of native priorities. 00036 * 00037 * The lowest native priority is mapped to CORBA priority 0, next 00038 * higher native priority is mapped to CORBA priority 1, and so 00039 * on. Since in all the operating systems where TAO is supported the 00040 * native priority set contains less than 32767 priorities, part of 00041 * the CORBA priority range is left unused. Consider NT as an 00042 * example. NT native priorities -15 -2 -1 0 1 2 15 are mapped to 00043 * CORBA priorities 0 1 2 3 4 5 6, respectively, and the rest of the 00044 * CORBA priority range is not used. 00045 * 00046 * This class was previously called Direct_Priority_Mapping. 00047 * 00048 * \nosubgrouping 00049 **/ 00050 class TAO_RTCORBA_Export TAO_Continuous_Priority_Mapping 00051 : public TAO_Priority_Mapping 00052 { 00053 public: 00054 00055 /// Constructor. 00056 TAO_Continuous_Priority_Mapping (int policy = ACE_SCHED_OTHER); 00057 00058 /// Destructor. 00059 ~TAO_Continuous_Priority_Mapping (void); 00060 00061 /// Convert CORBA priority to native priority. 00062 CORBA::Boolean to_native (RTCORBA::Priority corba_priority, 00063 RTCORBA::NativePriority &native_priority); 00064 00065 /// Convert native priority to CORBA priority. 00066 CORBA::Boolean to_CORBA (RTCORBA::NativePriority native_priority, 00067 RTCORBA::Priority &corba_priority); 00068 00069 private: 00070 int policy_; 00071 int min_; 00072 int max_; 00073 }; 00074 00075 TAO_END_VERSIONED_NAMESPACE_DECL 00076 00077 #endif /* TAO_HAS_CORBA_MESSAGING && TAO_HAS_CORBA_MESSAGING != 0 */ 00078 00079 #include /**/ "ace/post.h" 00080 00081 #endif /* TAO_CONTINUOUS_PRIORITY_MAPPING_H */
