processors.h File Reference

This module defines function relative to the slave processor management by the manager kernel. The Processor structure is defined, this structure stores information relative the slave processor, which are used by the kernel master to search task locations and get the number of free pages of each slave during the mapping processes. More...

#include "../../include/kernel_pkg.h"

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Classes
struct	Processor
	This structure store variables used to manage the processors attributed by the kernel master. More...

Functions
void	init_procesors ()
void	update_proc_slack_time (int, int)
int	get_proc_slack_time (int)
void	add_procesor (int)
void	add_task (int, int)
void	remove_task (int, int)
int	get_proc_free_pages (int)
int	get_proc_address (int)
int	get_task_location (int)

Detailed Description

This module defines function relative to the slave processor management by the manager kernel. The Processor structure is defined, this structure stores information relative the slave processor, which are used by the kernel master to search task locations and get the number of free pages of each slave during the mapping processes.

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

Searches for the location of a given task

Parameters

task_ID

The ID of the task

Returns

The task location (processor address in XY)

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

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