libgomp/testsuite/libgomp.c/shared-1.c

   1 extern void abort (void);
   2
   3 struct Y
   4 {
   5   int l[5][10];
   6 };
   7
   8 struct X
   9 {
  10   struct Y y;
  11   float b[10];
  12 };
  13
  14 void
  15 parallel (int a, int b)
  16 {
  17   int i, j;
  18   struct X A[10][5];
  19   a = b = 3;
  20
  21   for (i = 0; i < 10; i++)
  22     for (j = 0; j < 5; j++)
  23       A[i][j].y.l[3][3] = -10;
  24
  25   #pragma omp parallel shared (a, b, A) num_threads (5)
  26     {
  27       int i, j;
  28
  29       #pragma omp atomic
  30       a += omp_get_num_threads ();
  31
  32       #pragma omp atomic
  33       b += omp_get_num_threads ();
  34
  35       #pragma omp for private (j)
  36       for (i = 0; i < 10; i++)
  37         for (j = 0; j < 5; j++)
  38           A[i][j].y.l[3][3] += 20;
  39
  40     }
  41
  42   for (i = 0; i < 10; i++)
  43     for (j = 0; j < 5; j++)
  44       if (A[i][j].y.l[3][3] != 10)
  45         abort ();
  46
  47   if (a != 28)
  48     abort ();
  49
  50   if (b != 28)
  51     abort ();
  52 }
  53
  54 main()
  55 {
  56   parallel (1, 2);
  57   return 0;
  58 }