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#include <kernel/kern.h>

#include "parser.h"

#include "dosread.h"

/* Memory pointers on loaded file */

extern void *start;

extern void *end;

/* Calibration Loops */

#define CALIBRATION_DELTA 1000000

/* Activate task output */

#define TASK_OUTPUT

struct timespec zero_time;

int cal_cycles = 0;

int cal_rit_start = 0;

int cal_rit_calc_const = 0;

int cal_rit_calc_mean = 0;

int cal_rit_calc_gauss = 0;

/* Not Real-Time Task */

TASK nrt_test_task(void *arg)

{

  long long i,exec_cycles = 0;

  int exec_1,exec_2,exec_3;

  int act_1,act_2,act_3,next_act;

  struct timespec next_time;

  static int act= 0;

  struct loader_task *l = (struct loader_task *)(arg);

  act++;

  #ifdef TASK_OUTPUT

    cprintf("(Act %d Pid %d Grp %d Lev %d)",act,exec_shadow,l->group,l->task_level);

  #endif

  act_1 = TIMESPEC2USEC(&l->act_par_2);

  act_2 = TIMESPEC2USEC(&l->act_par_3);

  act_3 = TIMESPEC2USEC(&l->act_par_4);

  if (l->act_type == PAR_ACT_PERIODIC) {

    kern_gettime(&next_time);

    ADDUSEC2TIMESPEC(act_1,&next_time);

    kern_event_post(&next_time,(void *)((void *)task_activate),(void *)exec_shadow);

  }

  if (l->act_type == PAR_ACT_MEAN) {

    next_act = act_1 + rand() % act_2 - act_2/2;

    kern_gettime(&next_time);

    ADDUSEC2TIMESPEC(next_act,&next_time);

    kern_event_post(&next_time,(void *)((void *)task_activate),(void *)exec_shadow);

  }

  if (l->act_type == PAR_ACT_GAUSS) {

  }

  if (l->act_type == PAR_ACT_GAUSS_MAX) {

  }

  exec_1 = TIMESPEC2USEC(&l->exec_par_1);

  exec_2 = TIMESPEC2USEC(&l->exec_par_2);

  exec_3 = TIMESPEC2USEC(&l->exec_par_3);

  #ifdef TASK_OUTPUT

    printf_xy(exec_shadow % 20 + 60, exec_shadow / 20, GREEN, "S");

  #endif

  if (l->exec_type == PAR_EXEC_CONST)

    exec_cycles = (long long)(exec_1 - cal_rit_start - cal_rit_calc_const)

                   * CALIBRATION_DELTA / cal_cycles;

  if (l->exec_type == PAR_EXEC_MEAN)

    exec_cycles = (long long)(exec_1 - cal_rit_start - cal_rit_calc_mean

                   + rand() % exec_2 - exec_2/2) * CALIBRATION_DELTA / cal_cycles;

  if (l->exec_type == PAR_EXEC_GAUSS)

    exec_cycles = 0;

  if (l->exec_type == PAR_EXEC_GAUSS_MAX)

    exec_cycles = 0;

  for (i=0;i<exec_cycles;i++);

  #ifdef TASK_OUTPUT

    printf_xy(exec_shadow % 20 + 60, exec_shadow / 20, WHITE, "E");

  #endif

  return NULL;

}

/* Soft and hard Task */

TASK test_task(void *arg)

{

  long long i,exec_cycles = 0;

  int exec_1,exec_2,exec_3;

  int act_1,act_2,act_3,next_act;

  struct timespec next_time;

  static int act=0;

  int extra_rit, k;

  struct loader_task *l = (struct loader_task *)(arg);

  act++;

  #ifdef TASK_OUTPUT

    cprintf("(Act %d Pid %d Grp %d Lev %d)",act,exec_shadow,l->group,l->task_level);

  #endif

  act_1 = TIMESPEC2USEC(&l->act_par_2);

  act_2 = TIMESPEC2USEC(&l->act_par_3);

  act_3 = TIMESPEC2USEC(&l->act_par_4);

  exec_1 = TIMESPEC2USEC(&l->exec_par_1);

  exec_2 = TIMESPEC2USEC(&l->exec_par_2);

  exec_3 = TIMESPEC2USEC(&l->exec_par_3);

  extra_rit = cal_rit_start;

  k = 0;                      

  while(1) {

    task_testcancel();

    #ifdef TASK_OUTPUT

       k++;

       if (k > 15) k = 1;

       printf_xy(exec_shadow % 20 + 59, exec_shadow / 20, k,"X");

    #endif

    if (l->act_type == PAR_ACT_MEAN) {

      next_act = act_1 + rand() % act_2 - act_2/2;

      kern_gettime(&next_time);

      ADDUSEC2TIMESPEC(next_act,&next_time);

      kern_event_post(&next_time,(void *)((void *)task_activate),(void *)exec_shadow);

    }

    if (l->act_type == PAR_ACT_GAUSS) {

    }

    if (l->act_type == PAR_ACT_GAUSS_MAX) {

    }

    if (l->exec_type == PAR_EXEC_CONST)

      exec_cycles = (long long)(exec_1 - extra_rit - cal_rit_calc_const)

                   * CALIBRATION_DELTA / cal_cycles;

    if (l->exec_type == PAR_EXEC_MEAN)

      exec_cycles = (long long)(exec_1 - extra_rit - cal_rit_calc_mean

                     + rand() % exec_2 - exec_2/2) * CALIBRATION_DELTA / cal_cycles;

    if (l->exec_type == PAR_EXEC_GAUSS)

      exec_cycles = 0;

    if (l->exec_type == PAR_EXEC_GAUSS_MAX)

      exec_cycles = 0;

    extra_rit = 0;

    for (i=0;i<exec_cycles;i++);

    task_endcycle();

  }

  return NULL;

}

/* Delay Calibration */

int calibrate_cycle()

{

  long long i;

  struct timespec start,end,diff;

  int temp = 1234567;

  int temp_1 = 1234567;

  int temp_2 = 1234567;

  kern_cli();

  kern_gettime(&start);

  for (i=0;i<CALIBRATION_DELTA;i++);

  kern_gettime(&end);

  kern_sti();

  SUBTIMESPEC(&end,&start,&diff);

  cal_cycles = TIMESPEC2USEC(&diff);

  cprintf("Calibration usec/[%d cycles] = %d\n",CALIBRATION_DELTA,cal_cycles);

  kern_cli();

  kern_gettime(&start);

  temp = (long long)(temp_1) * CALIBRATION_DELTA / cal_cycles;

  kern_gettime(&end);

  kern_sti();

  SUBTIMESPEC(&end,&start,&diff);

  cal_rit_calc_const = TIMESPEC2USEC(&diff);

  kern_cli();

  kern_gettime(&start);

  temp = (long long)(temp_1 + rand() % temp_2 - temp_2/2) * CALIBRATION_DELTA / cal_cycles;

  kern_gettime(&end);

  kern_sti();

  SUBTIMESPEC(&end,&start,&diff);

  cal_rit_calc_mean = TIMESPEC2USEC(&diff);

  kern_cli();

  kern_gettime(&start);

  temp = TIMESPEC2USEC(&start);

  kern_gettime(&end);

  kern_sti();

  SUBTIMESPEC(&end,&start,&diff);

  cal_rit_start = TIMESPEC2USEC(&diff) * 6 + cal_rit_calc_const;

  cprintf("Calibration delay start = %d const = %d mean = %d gauss = %d\n",

           cal_rit_start,cal_rit_calc_const,cal_rit_calc_mean,cal_rit_calc_gauss);

  return 0;

}

/* Task create */

void loader_task_create(struct loader_task *start_loader_task)

{

  struct loader_task *current = start_loader_task;

  char tmp[30];

  int i, total_task;

  int total_group = 0;

  PID p;

  total_task = 0;

  while (current != NULL) {

    total_group++;

    current->group = total_group;

    current->bandwidth = 0;

    for (i=0; i < current->number; i++) {

      if (current->task_type == PAR_TASK_NRT) {

        NRT_TASK_MODEL nrt;

        nrt_task_default_model(nrt);

        nrt_task_def_save_arrivals(nrt);

        nrt_task_def_arg(nrt,(void *)(current));

        nrt_task_def_ctrl_jet(nrt);

        nrt_task_def_level(nrt,current->task_level);

        nrt_task_def_group(nrt,total_group);

        sprintf(tmp,"NRT %d:%d",current->group,i);

        p = task_create(tmp,nrt_test_task,&nrt,NULL);

        if (p == NIL) {

          cprintf("Error nrt task creating\n");

          sys_end();

        }

        total_task++;

      }

      if (current->task_type == PAR_TASK_HARD) {

        HARD_TASK_MODEL ht;

        hard_task_default_model(ht);

        hard_task_def_arg(ht,(void *)(current));

        hard_task_def_wcet(ht,TIMESPEC2USEC(&current->wcet));

        hard_task_def_ctrl_jet(ht);

        hard_task_def_level(ht,current->task_level);

        hard_task_def_group(ht,total_group);

        if (current->act_type != PAR_ACT_PERIODIC) {

          hard_task_def_mit(ht,TIMESPEC2USEC(&current->deadline));

          current->bandwidth += MAX_BANDWIDTH / TIMESPEC2USEC(&current->deadline)

                                 * TIMESPEC2USEC(&current->wcet);

          hard_task_def_aperiodic(ht);

        } else {

          hard_task_def_mit(ht,TIMESPEC2USEC(&current->act_par_2));

          current->bandwidth += MAX_BANDWIDTH / TIMESPEC2USEC(&current->act_par_2)

                                 * TIMESPEC2USEC(&current->wcet);

        }

        sprintf(tmp,"HARD %d:%d",current->group,i);

        p = task_create(tmp,test_task,&ht,NULL);

        if (p == NIL) {

          cprintf("Error hard task creating\n");

          sys_end();

        }

        total_task++;

      }

      if (current->task_type == PAR_TASK_SOFT) {

        SOFT_TASK_MODEL st;

        soft_task_default_model(st);

        soft_task_def_save_arrivals(st);

        soft_task_def_arg(st,(void *)(current));

        soft_task_def_met(st,TIMESPEC2USEC(&current->wcet));

        soft_task_def_ctrl_jet(st);

        soft_task_def_level(st,current->task_level);

        soft_task_def_group(st,total_group);

        if (current->act_type == PAR_ACT_PERIODIC) {

          soft_task_def_period(st,TIMESPEC2USEC(&current->act_par_2));

          current->bandwidth += MAX_BANDWIDTH / TIMESPEC2USEC(&current->act_par_2)

                                 * TIMESPEC2USEC(&current->wcet);

        } else if (current->act_type != PAR_ACT_SINGLE) {

          soft_task_def_period(st,TIMESPEC2USEC(&current->act_par_2));

          current->bandwidth += MAX_BANDWIDTH / TIMESPEC2USEC(&current->act_par_2)

                                 * TIMESPEC2USEC(&current->wcet);

          soft_task_def_aperiodic(st);

        } else {

          soft_task_def_period(st,TIMESPEC2USEC(&current->wcet)*1000);

          current->bandwidth += MAX_BANDWIDTH / 1000;

          soft_task_def_aperiodic(st);

        }

        sprintf(tmp,"SOFT %d:%d",current->group,i);

        p = task_create(tmp,test_task,&st,NULL);

        if (p == NIL) {

          cprintf("Error soft task creating\n");

          sys_end();

        }

        total_task++;

      }

    }

    cprintf("Task group %d created. Worst case BW = %d.%d \n",

             current->group,(int)( (long long)current->bandwidth * 100 / MAX_BANDWIDTH),

             (int)( (long long)current->bandwidth*  100000 / MAX_BANDWIDTH % 1000));

    current = current->next;

  }

  cprintf("Created %d tasks\n",total_task);

}

/* Set the first extivation events */

void loader_first_execution(struct loader_task *start_loader_task)

{

  struct loader_task *current = start_loader_task;

  struct timespec start_time;  

  while (current != NULL) {

    ADDTIMESPEC(&zero_time,&current->act_par_1,&start_time);

    kern_event_post(&start_time, (void *)((void *)group_activate), (void *)(current->group));

    current = current->next;

  }  

}

int main()

{

  struct loader_task *start_loader_task = NULL;

  struct timespec total;

  struct timespec end_time;

  line_reader(start, end, &total, &start_loader_task);

  srand(kern_gettime(NULL));

  calibrate_cycle();

  loader_task_create(start_loader_task);

  kern_gettime(&zero_time);

  loader_first_execution(start_loader_task);

  ADDTIMESPEC(&zero_time,&total,&end_time);

  kern_event_post(&end_time,(void *)((void *)(sys_end)),NULL);

  return 0;

}