reclustering.c File Reference

This module implements function relative to reclustering This module is used by the kernel manager Reclustering is a functionality that enable the system to borrow some resources (free pages) of a cluster to another cluster. More...

#include "reclustering.h"
#include "../include/services.h"
#include "utils.h"
#include "cluster_scheduler.h"
#include "processors.h"
#include "packet.h"

Include dependency graph for reclustering.c:

Macros
#define	RECLUSTERING_DEBUG   0
	When enable compile the puts in this file.

Functions
void	reclustering_setup (int c_id)
int	is_reclustering_NOT_active ()
void	send_loan_proc_request (int address, int taskID)
void	send_loan_proc_delivery (int master_address, int taskID, int proc, int hops)
void	send_loan_proc_release (int master_address, int release_proc, int taskID)
void	fires_reclustering_protocol ()
void	handle_reclustering (ServiceHeader *p)
int	reclustering_next_task (Application *app)

Variables
Reclustering	reclustering
	Reclustering structure instance.
int	max_neighbors_level = 0
	Max of neighbors clusters for each reclustering level.
unsigned int	clusterID
	Current cluster ID. More...
unsigned int	starting_x_cluster_size
	Starting X size of cluster when reclustering is started.
unsigned int	starting_y_cluster_size
	Starting Y size of cluster when reclustering is started.

Detailed Description

This module implements function relative to reclustering This module is used by the kernel manager Reclustering is a functionality that enable the system to borrow some resources (free pages) of a cluster to another cluster.

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 fires_reclustering_protocol

(

)

Fires a new round of the reclustering protocol. This function send the load request to the neighboors masters delimited by the reclustering.neighbors_level variable

void handle_reclustering

(

ServiceHeader *

p

)

handle reclustering packets incoming from kernel master. The kernel master kwnows that the packet is a reclustering related packet and calls this function passing the ServiceHeader pointer.

Parameters

p	ServiceHeader pointer

int is_reclustering_NOT_active ( )

inline

Test if the reclustering is not active

Returns

1 if is not active, 0 if is active

int reclustering_next_task

(

Application *

app

)

Searches for first application task not mapped yet, firing the reclustering

Parameters

app	Application pointer

Returns

1 - if the application have all its task mapped, 0 - if the reclustering was initiated

void reclustering_setup

(

int

c_id

)

Setup a reclustering, called by kernel and configure the cluster ID and initializes some variables

Parameters

c_id	Current cluster ID

void send_loan_proc_delivery	(	int	master_address,
		int	taskID,
		int	proc,
		int	hops
	)

Assembles and sends a LOAN_PROCESSOR_DELIVERY packet to the target of reclustering (requesting) master kernel

Parameters

master_address	Requesting reclustering master address
taskID	Task ID target of reclustering
proc	Allocated processor
hops	Number of hops from the target processor

void send_loan_proc_release	(	int	master_address,
		int	release_proc,
		int	taskID
	)

Assembles and sends a LOAN_PROCESSOR_RELEASE packet to the neighbor master kernel

Parameters

master_address	Neighbor master address
release_proc	Address of the released processor
taskID	Task ID target of reclustering

void send_loan_proc_request	(	int	address,
		int	taskID
	)

Assembles and sends a LOAN_PROCESSOR_REQUEST packet to the neighbor master kernel

Parameters

address	Neighbor master address
taskID	Task ID target of reclustering

Variable Documentation

unsigned int clusterID

Current cluster ID.

Cluster ID index of array cluster_info - clusterID is the only extern global variable in in all software.