4.3BSD - /usr/src/undoc/brktest.c

   1:     int a[1000];
   2: 
   3: main()
   4: {
   5:     int asize = 1000,i,inc = 0,new;
   6: 
   7:     srand(1);
   8:     for (i = 0 ; i < asize ; i++)
   9:         a[i] = i;
  10:     while (1)  {
  11:         new = rand() % 4000;
  12:         if (((rand() % 1000) > 750) && ((asize - new) > 1000))
  13:             new = -new;
  14:         for (i = 0 ;  i < asize ; i++ )
  15:             if (a[i] != i)
  16:                 printf("bad a %x\n",i);
  17:             if (sbrk(4 * new) != -1)  {
  18:                 if (new > 0)  {
  19:                     for (i = 0 ; i < new ; i++)
  20:                         a[asize + i] = asize + i;  }
  21:                 asize += new;  }
  22:             else  {
  23:                 new = 1000 - asize;
  24:                 sbrk(4 * new);
  25:                 asize += new;  }
  26:         sleep((rand() % 4) + 1);  }
  27: }

Defined functions

Defined variables