libgomp/testsuite/libgomp.c/copyin-3.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2" } */
   3 /* { dg-require-effective-target tls_runtime } */
   4
   5 #include <omp.h>
   6 #include <stdlib.h>
   7
   8 int thr;
   9 #pragma omp threadprivate (thr)
  10
  11 int
  12 test (int l)
  13 {
  14   return l || (thr != omp_get_thread_num () * 2);
  15 }
  16
  17 int
  18 main (void)
  19 {
  20   int l = 0;
  21
  22   omp_set_dynamic (0);
  23   omp_set_num_threads (6);
  24
  25   thr = 8;
  26   /* Broadcast the value to all threads.  */
  27 #pragma omp parallel copyin (thr)
  28   ;
  29
  30 #pragma omp parallel reduction (||:l)
  31   {
  32     /* Now test if the broadcast succeeded.  */
  33     l = thr != 8;
  34     thr = omp_get_thread_num () * 2;
  35 #pragma omp barrier
  36     l = test (l);
  37   }
  38
  39   if (l)
  40     abort ();
  41   return 0;
  42 }