processors.c File Reference

This module implements function relative to the slave processor management by the manager kernel. This modules is used only by the manager kernel. More...

#include "processors.h"
#include "utils.h"

Include dependency graph for processors.c:

Functions
Processor *	search_processor (int proc_address)
int	get_proc_address (int index)
void	update_proc_slack_time (int proc_address, int slack_time)
int	get_proc_slack_time (int proc_address)
void	add_procesor (int proc_address)
void	add_task (int proc_address, int task_id)
void	remove_task (int proc_address, int task_id)
int	get_proc_free_pages (int proc_address)
int	get_task_location (int task_id)
void	init_procesors ()

Variables
Processor	processors [MAX_CLUSTER_SLAVES]
	Processor array.

Detailed Description

This module implements function relative to the slave processor management by the manager kernel. This modules is used only by the manager kernel.

HEMPS VERSION - 8.0 - support for RT applications

Distribution: June 2016

Created by: Marcelo Ruaro - contact: marce.nosp@m.lo.r.nosp@m.uaro@.nosp@m.acad.nosp@m..pucr.nosp@m.s.br

Research group: GAPH-PUCRS - contact: ferna.nosp@m.ndo..nosp@m.morae.nosp@m.s@pu.nosp@m.crs.b.nosp@m.r

Function Documentation

void add_procesor

(

int

proc_address

)

Add a valid processor to the processors' array

Parameters

proc_address

Processor address to be added

void add_task	(	int	proc_address,
		int	task_id
	)

Add a task into a processor. Called evenly when a task is mapped into a processor.

Parameters

proc_address	Processor address
task_id	Task ID to be added

int get_proc_address

(

int

index

)

Gets the processor address stored in the index parameter

Parameters

index

Index of the processor address

Returns

The processor address (XY)

int get_proc_free_pages

(

int

proc_address

)

Gets the total of free pages of a given processor

Parameters

proc_address

Processor address

Returns

The number of free pages

int get_proc_slack_time

(

int

proc_address

)

Gets the processor slack time

Parameters

proc_address

Processor address

Returns

The processor slack time in percentage

int get_task_location

(

int

task_id

)

Searches for a task location by walking for all processors within processors' array

Parameters

task_id

Task ID

Returns

The task location, i.e., the processor address that the task is allocated

void init_procesors

(

)

Initializes the processors's array with invalid values

void remove_task	(	int	proc_address,
		int	task_id
	)

Remove a task from a processor. Called evenly when a task is unmapped (removed) from a processor.

Parameters

proc_address	Processor address
task_id	Task ID to be removed

Processor* search_processor

(

int

proc_address

)

Internal function to search by a processor - not visible to the other software part

Parameters

proc_address

Processor address to be searched

Returns

The processor pointer

void update_proc_slack_time	(	int	proc_address,
		int	slack_time
	)

Updates the processor slack time

Parameters

proc_address	Processor address
slack_time	Slack time in percentage