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#include <kernel/kern.h>
#include "func.h"



/* Delay Calibration */
int calibrate_cycle()
{
  long long i;
  struct timespec start,end,diff;

  kern_cli();
  kern_gettime(&start);
  for (i=0;i<CALIBRATION_DELTA;i++) kern_gettime(NULL);
  kern_gettime(&end);
  kern_sti();

  SUBTIMESPEC(&end,&start,&diff);
  cal_cycles = TIMESPEC2USEC(&diff);
  cprintf("Calibration usec/[%d cycles] = %d\n",CALIBRATION_DELTA,cal_cycles);

  return 0;

}

void *get_task_model(struct loader_task *current) {
  if (current->local_scheduler == LOADER_POSIX_SCHEDULER) {
    static NRT_TASK_MODEL nrt;
   
    nrt_task_default_model(nrt);
    nrt_task_def_save_arrivals(nrt);
    nrt_task_def_ctrl_jet(nrt);
    nrt_task_def_usemath(nrt);
   
    return &nrt;

  }  

  if (current->local_scheduler == LOADER_EDF_SCHEDULER) {
    static HARD_TASK_MODEL ht;

    hard_task_default_model(ht);
    hard_task_def_ctrl_jet(ht);          
    hard_task_def_mit(ht,TIMESPEC2USEC(&current->deadline));
    hard_task_def_wcet(ht,TIMESPEC2USEC(&current->wcet));
    hard_task_def_usemath(ht);
    return &ht;
  }  


  if (current->local_scheduler == LOADER_RM_SCHEDULER) {
    static HARD_TASK_MODEL ht;
                                                                                                                             
    hard_task_default_model(ht);
    hard_task_def_mit(ht,TIMESPEC2USEC(&current->deadline));
    hard_task_def_wcet(ht,TIMESPEC2USEC(&current->wcet));
    hard_task_def_ctrl_jet(ht);
    hard_task_def_usemath(ht);
    return &ht;
  }  

  return NULL;
                                                 
}  

void set_simulation_time (struct timespec *total) {
  struct timespec end_time;
 
  ADDTIMESPEC(&zero_time,total,&end_time);
  kern_event_post(&end_time,(void *)((void *)(sys_end)),NULL);

}

void set_next_activation(struct timespec *next) {
  struct timespec end_time;
 ADDTIMESPEC(&zero_time,next,&end_time);
 kern_event_post(&end_time,(void *)((void *)(task_activate(exec_shadow))),NULL);
}

int calibration_func() {
  return kern_gettime(NULL);

}