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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:

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Collaboration diagram for ACE_Deadline_Message_Strategy:

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List of all members.

Public Member Functions

 ACE_Deadline_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_Deadline_Message_Strategy (void)
 Virtual dtor.

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

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

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 986 of file Message_Block.h.

Constructor & Destructor Documentation

ACE_Deadline_Message_Strategy::ACE_Deadline_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.

Definition at line 1375 of file Message_Block.cpp. 

01379   : ACE_Dynamic_Message_Strategy (static_bit_field_mask,
01380                                   static_bit_field_shift,
01381                                   dynamic_priority_max,
01382                                   dynamic_priority_offset)
01383 {
01384 }

ACE_Deadline_Message_Strategy::~ACE_Deadline_Message_Strategy (  void   )  [virtual]
 

Virtual dtor.

Definition at line 1386 of file Message_Block.cpp. 

01387 {
01388 }

Member Function Documentation

void ACE_Deadline_Message_Strategy::convert_priority (  ACE_Time_Value &  priority,
const ACE_Message_Block &  mb
)  [virtual]
 

Dynamic priority conversion function based on time to deadline.

Implements ACE_Dynamic_Message_Strategy.

Definition at line 1391 of file Message_Block.cpp.

References ACE_Message_Block::msg_deadline_time(). 

01393 {
01394   // Convert absolute time passed in tv to negative time
01395   // to deadline of mb with respect to that absolute time.
01396   priority -= mb.msg_deadline_time ();
01397 }

void ACE_Deadline_Message_Strategy::dump (  void   )  const [virtual]
 

Dump the state of the strategy.

Reimplemented from ACE_Dynamic_Message_Strategy.

Definition at line 1401 of file Message_Block.cpp.

References ACE_BEGIN_DUMP, ACE_DEBUG, ACE_END_DUMP, ACE_TEXT, ACE_TRACE, ACE_Dynamic_Message_Strategy::dump(), and LM_DEBUG. 

01402 {
01403 #if defined (ACE_HAS_DUMP)
01404   ACE_TRACE ("ACE_Deadline_Message_Strategy::dump");
01405 
01406   ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
01407 
01408   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("ACE_Dynamic_Message_Strategy base class: \n")));
01409   this->ACE_Dynamic_Message_Strategy::dump ();
01410 
01411   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\nderived class: ACE_Deadline_Message_Strategy\n")));
01412 
01413   ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
01414 #endif /* ACE_HAS_DUMP */
01415 }

The documentation for this class was generated from the following files:
Generated on Sun Jan 27 12:54:25 2008 for ACE by doxygen 1.3.6