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ACE_Laxity_Message_Strategy Class Reference

Laxity based message priority strategy. More...

#include <Message_Block.h>

Inheritance diagram for ACE_Laxity_Message_Strategy:

Inheritance graph
Collaboration diagram for ACE_Laxity_Message_Strategy:

Collaboration graph
List of all members.

Public Methods

 ACE_Laxity_Message_Strategy (unsigned long static_bit_field_mask=0x3FFUL, unsigned long static_bit_field_shift=10, unsigned long dynamic_priority_max=0x3FFFFFUL, unsigned long dynamic_priority_offset=0x200000UL)
 Ctor, with all arguments defaulted.

virtual ~ACE_Laxity_Message_Strategy (void)
 virtual dtor.

virtual void convert_priority (ACE_Time_Value &priority, const ACE_Message_Block &mb)
 Dynamic priority conversion function based on laxity.

virtual void dump (void) const
 Dump the state of the strategy.

Detailed Description

Laxity based message priority strategy.

Assigns dynamic message priority according to laxity (time to deadline minus worst case execution time). The message priority is divided into high and low order bit fields. The high order bit field is used for dynamic message priority, which is updated whenever the convert_priority() method is called. The low order bit field is used for static message priority and is left unchanged. The partitioning of the priority value into high and low order bit fields is done according to the arguments passed to the strategy object's constructor.

Constructor & Destructor Documentation

ACE_Laxity_Message_Strategy::ACE_Laxity_Message_Strategy unsigned long    static_bit_field_mask = 0x3FFUL,
unsigned long    static_bit_field_shift = 10,
unsigned long    dynamic_priority_max = 0x3FFFFFUL,
unsigned long    dynamic_priority_offset = 0x200000UL

Ctor, with all arguments defaulted.

ACE_Laxity_Message_Strategy::~ACE_Laxity_Message_Strategy void    [virtual]

virtual dtor.

Member Function Documentation

ACE_INLINE void ACE_Laxity_Message_Strategy::convert_priority ACE_Time_Value   priority,
const ACE_Message_Block   mb

Dynamic priority conversion function based on laxity.

Implements ACE_Dynamic_Message_Strategy.

void ACE_Laxity_Message_Strategy::dump void    const [virtual]

Dump the state of the strategy.

Reimplemented from ACE_Dynamic_Message_Strategy.

The documentation for this class was generated from the following files:
Generated on Fri Apr 2 16:49:24 2004 for ACE by doxygen1.2.18