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ACE_Deadline_Message_Strategy Class Reference

Deadline based message priority strategy. More...

#include <Message_Block.h>

Inheritance diagram for ACE_Deadline_Message_Strategy:

Inheritance graph
Collaboration diagram for ACE_Deadline_Message_Strategy:

Collaboration graph
List of all members.

Public Methods

 ACE_Deadline_Message_Strategy (u_long static_bit_field_mask=0x3FFUL, u_long static_bit_field_shift=10, u_long dynamic_priority_max=0x3FFFFFUL, u_long dynamic_priority_offset=0x200000UL)
 Ctor, with all arguments defaulted. More...

virtual ~ACE_Deadline_Message_Strategy (void)
 Virtual dtor. More...

virtual void convert_priority (ACE_Time_Value &priority, const ACE_Message_Block &mb)
 Dynamic priority conversion function based on time to deadline. More...

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

Detailed Description

Deadline based message priority strategy.

Assigns dynamic message priority according to time to deadline. 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.

Definition at line 973 of file Message_Block.h.

Constructor & Destructor Documentation

ACE_Deadline_Message_Strategy::ACE_Deadline_Message_Strategy u_long    static_bit_field_mask = 0x3FFUL,
u_long    static_bit_field_shift = 10,
u_long    dynamic_priority_max = 0x3FFFFFUL,
u_long    dynamic_priority_offset = 0x200000UL

Ctor, with all arguments defaulted.

Definition at line 1245 of file Message_Block.cpp.

ACE_Deadline_Message_Strategy::~ACE_Deadline_Message_Strategy void    [virtual]

Virtual dtor.

Definition at line 1256 of file Message_Block.cpp.

01257 {
01258 }

Member Function Documentation

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

Dynamic priority conversion function based on time to deadline.

Implements ACE_Dynamic_Message_Strategy.

Definition at line 635 of file Message_Block.i.

References ACE_Message_Block::msg_deadline_time.

00637 {
00638   // Convert absolute time passed in tv to negative time
00639   // to deadline of mb with respect to that absolute time.
00640   priority -= mb.msg_deadline_time ();
00641 }

void ACE_Deadline_Message_Strategy::dump void    const [virtual]

Dump the state of the strategy.

Reimplemented from ACE_Dynamic_Message_Strategy.

Definition at line 1261 of file Message_Block.cpp.

References ACE_BEGIN_DUMP, ACE_DEBUG, ACE_END_DUMP, ACE_LIB_TEXT, ACE_TRACE, ACE_Dynamic_Message_Strategy::dump, and LM_DEBUG.

01262 {
01263   ACE_TRACE ("ACE_Deadline_Message_Strategy::dump");
01267   ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("ACE_Dynamic_Message_Strategy base class: \n")));
01268   this->ACE_Dynamic_Message_Strategy::dump ();
01270   ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("\nderived class: ACE_Deadline_Message_Strategy\n")));
01273 }

The documentation for this class was generated from the following files:
Generated on Mon Jun 16 12:47:02 2003 for ACE by doxygen1.2.14 written by Dimitri van Heesch, © 1997-2002