#include <stdio.h>
#include "mtio.h"

#define SIDE_NUM 10
#define NTHREAD 200
#define MAX_NUM (SIDE_NUM*SIDE_NUM)

unsigned A[NTHREAD][SIDE_NUM][SIDE_NUM];
unsigned B[NTHREAD][SIDE_NUM][SIDE_NUM];
unsigned C[NTHREAD][SIDE_NUM][SIDE_NUM];

void
random_yield()
{
    int i;
    i = rand()%3;
    /* yield 1/3 of the time */
    if(i > 1)
    {
        minithread_yield();
    }
    return;
}



void proc(int n) {
  int i;
  int j;
  int k;


  for (i = 0; i < SIDE_NUM; i++) {
      for (j = 0; j < SIDE_NUM; j++) {
	   A[n][i][j] = i+j;  B[n][i][j] = i-j;
       }
      printf("+");
      fflush(stdout);
      random_yield();
   }
  printf("\n"); 

  for (i = 0; i < SIDE_NUM; i++) {
      for (j = 0; j < SIDE_NUM; j++) {
	   C[n][i][j] = A[n][i][j] + B[n][i][j];
       }
      printf(".");
      fflush(stdout);
      random_yield();
   }
  printf("\n"); 


   for (i = 0; i < SIDE_NUM; i++) {
      for (j = 0; j < SIDE_NUM; j++) {
	if (C[n][i][j] != 2*i) {
	   printf("!");
	   fflush(stdout);
	}
      }
      printf("x");
      fflush(stdout);
      random_yield();
    }
}

main() {
  int i;
  printf("Starting...\n");
  fflush(stdout);

  for (i = 0; i < NTHREAD; i++ ) {
      minithread_fork(proc,i);
  }
  _exit(0);
}