Runlist Class Reference

A runlist is used to restrict concurrent exection to a limited set of concurrent sessions, much like a semaphore.list of runable objects. More...

#include <misc.h>

Inheritance diagram for Runlist:

List of all members.

Public Member Functions
	Runlist (unsigned count=1)
	Create a new runlist with a specified limit.
bool	add (Runable *run)
	Add a runable object to this runlist.
void	del (Runable *run)
	Remove a runable object from the wait list or notify when it is done running so that the used count can be decremented.
void	set (unsigned limit)
	Set the limit.
Protected Member Functions
void	check (void)
Protected Attributes
unsigned	limit
unsigned	used

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Detailed Description

A runlist is used to restrict concurrent exection to a limited set of concurrent sessions, much like a semaphore.list of runable objects.

However, the runlist differs in that it notifies objects when they become ready to run, rather than requiring them to wait and "block" for the semaphore count to become low enough to continue.

Author:

David Sugar <dyfet@ostel.com>

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Constructor & Destructor Documentation

Runlist::Runlist (  unsigned  count = 1  )

Create a new runlist with a specified limit. Parameters: limit  before wait queuing.

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Member Function Documentation

bool Runlist::add (  Runable *  run  )

Add a runable object to this runlist. If the number of entries running is below the limit, then add returns true otherwise the entry is added to the list. Returns: true if immediately ready to run Parameters: runable  object.

void Runlist::check (  void   )  [protected]

void Runlist::del (  Runable *  run  )

Remove a runable object from the wait list or notify when it is done running so that the used count can be decremented. Parameters: runable  object.

void Runlist::set (  unsigned  limit  )

Set the limit. Parameters: limit  to use.

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Member Data Documentation

unsigned Runlist::limit [protected]

unsigned Runlist::used [protected]

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

• misc.h

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