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ACE_Sched_Priority_Iterator Class Reference

An iterator over the OS-defined scheduling priorities. More...

#include <Sched_Params.h>

List of all members.

Public Methods
	ACE_Sched_Priority_Iterator (const ACE_Sched_Params::Policy &policy, int scope=ACE_SCOPE_THREAD)
	Initialize the iterator, the arguments define the scheduling policy and scope for the priorities (see ACE_Sched_Param). More...
	~ACE_Sched_Priority_Iterator (void)
	Default dtor. More...
int	more (void) const
	Check if there are more priorities. More...
int	priority (void) const
	Return the current priority. More...
void	next (void)
	Move to the next priority. The iteration is from lowest to highest importance. More...
const ACE_Sched_Params::Policy &	policy (void) const
	Accessor for the scheduling policy over which we are iterating. More...
int	scope (void) const
	Accessor for the scheduling. More...
Private Attributes
ACE_Sched_Params::Policy	policy_
	The Scheduling policy (FIFO, RR, etc.) and scheduling scope (PROCESS, SYSTEM) we are iterating on. More...
int	scope_
int	priority_
	The current priority. More...
int	done_

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Detailed Description

An iterator over the OS-defined scheduling priorities.

The order of priorities (numeric value vs. importance) is OS dependant, it can be the case that the priorities are not even contigous. This class permits iteration over priorities using the iterator pattern.

Definition at line 176 of file Sched_Params.h.

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Constructor & Destructor Documentation

ACE_INLINE ACE_Sched_Priority_Iterator::ACE_Sched_Priority_Iterator (  const ACE_Sched_Params::Policy &    policy, int    scope = ACE_SCOPE_THREAD )

Initialize the iterator, the arguments define the scheduling policy and scope for the priorities (see ACE_Sched_Param). Definition at line 98 of file Sched_Params.i. References ACE_Sched_Params::Policy, priority_, ACE_Sched_Params::priority_min, and scope. : policy_ (policy), scope_ (scope), priority_ (0), done_ (0) { priority_ = ACE_Sched_Params::priority_min (this->policy (), this->scope ()); }

ACE_INLINE ACE_Sched_Priority_Iterator::~ACE_Sched_Priority_Iterator (  void    )

Default dtor. Definition at line 109 of file Sched_Params.i. { }

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Member Function Documentation

ACE_INLINE int ACE_Sched_Priority_Iterator::more (  void    )  const

Check if there are more priorities. Definition at line 114 of file Sched_Params.i. References done_. { return !this->done_; }

ACE_INLINE void ACE_Sched_Priority_Iterator::next (  void    )

Move to the next priority. The iteration is from lowest to highest importance. Definition at line 126 of file Sched_Params.i. References done_, ACE_Sched_Params::next_priority, priority, priority_, and scope. { if (this->done_) return; int old_priority = this->priority_; priority_ = ACE_Sched_Params::next_priority (this->policy (), this->priority (), this->scope ()); this->done_ = old_priority == priority_; }

ACE_INLINE const ACE_Sched_Params::Policy & ACE_Sched_Priority_Iterator::policy (  void    )  const

Accessor for the scheduling policy over which we are iterating. Definition at line 86 of file Sched_Params.i. References policy_. { return this->policy_; }

ACE_INLINE int ACE_Sched_Priority_Iterator::priority (  void    )  const

Return the current priority. Definition at line 120 of file Sched_Params.i. References priority_. Referenced by next. { return this->priority_; }

ACE_INLINE int ACE_Sched_Priority_Iterator::scope (  void    )  const

Accessor for the scheduling. Definition at line 92 of file Sched_Params.i. References scope_. Referenced by ACE_Sched_Priority_Iterator, and next. { return this->scope_; }

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Member Data Documentation

int ACE_Sched_Priority_Iterator::done_ [private]

This is set to 1 when there are no more priorities. Cannot easily compare against the highest priority on platforms were priorities are non-contigous or descending. Definition at line 217 of file Sched_Params.h. Referenced by more, and next.

ACE_Sched_Params::Policy ACE_Sched_Priority_Iterator::policy_ [private]

The Scheduling policy (FIFO, RR, etc.) and scheduling scope (PROCESS, SYSTEM) we are iterating on. Definition at line 206 of file Sched_Params.h. Referenced by policy.

int ACE_Sched_Priority_Iterator::priority_ [private]

The current priority. Definition at line 210 of file Sched_Params.h. Referenced by ACE_Sched_Priority_Iterator, next, and priority.

int ACE_Sched_Priority_Iterator::scope_ [private]

Definition at line 207 of file Sched_Params.h. Referenced by scope.

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The documentation for this class was generated from the following files:

• Sched_Params.h
• Sched_Params.i

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