rt_process.c

来自「实时操作系统RT LINUX的源代码」· C语言 代码 · 共 80 行

#ifndef MODULE
#define MODULE
#endif

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/version.h>

#include <linux/cons.h>

#include "rt_sched.h"

#define NTASKS 5

RT_TASK tasks[NTASKS];

struct {  
  int id;
  int compute;
  int period;
} Parameters[NTASKS];

void 
fun(int delay) 
{
	int cycle,i;
	while(1){
		for (cycle=0; cycle < delay; cycle++){
      			for (i=0; i<1000; i++);
    		}
    
	rt_task_wait();
  	}
}

int init_module(void)
{
  RTIME now;
  int x;

  Parameters[0].compute=10;
  Parameters[0].period=3000;

  Parameters[1].compute=20;
  Parameters[1].period=4200;

  Parameters[2].compute=30;
  Parameters[2].period=4300;

  Parameters[3].compute=40;
  Parameters[3].period=4500;

  Parameters[4].compute=50;
  Parameters[4].period=4700;

  Parameters[5].compute=60;
  Parameters[5].period=5100;
  
  for (x=0; x<NTASKS; x++){
    rt_task_init(&(tasks[x]), fun, Parameters[x].compute , 3000, x+1);
  }

  now = rt_get_time();
  for (x=0; x<NTASKS; x++){
    rt_task_make_periodic(&(tasks[x]), now+(RTIME)1000, 
                          (RTIME)  Parameters[x].period);

  }
  return 0;
}

void 
cleanup_module(void)
{
	int x;
	for (x=0; x<NTASKS; x++){
		rt_task_delete(&(tasks[x]));
	}
}