libgomp/testsuite/libgomp.c/cancel-parallel-3.c

   1 /* { dg-do run } */
   2 /* { dg-set-target-env-var OMP_CANCELLATION "true" } */
   3
   4 #include <omp.h>
   5 #include <unistd.h>
   6
   7 static inline void
   8 do_some_work (void)
   9 {
  10   asm volatile ("" : : : "memory");
  11 }
  12
  13 int
  14 main ()
  15 {
  16   omp_set_dynamic (0);
  17   omp_set_schedule (omp_sched_static, 1);
  18   #pragma omp parallel num_threads (16)
  19   {
  20     int i, j;
  21     do_some_work ();
  22     #pragma omp barrier
  23     if (omp_get_thread_num () == 1)
  24       {
  25         sleep (2);
  26         #pragma omp cancellation point parallel
  27       }
  28     for (j = 3; j <= 16; j++)
  29       #pragma omp for schedule (runtime) nowait
  30       for (i = 0; i < j; i++)
  31         do_some_work ();
  32     if (omp_get_thread_num () == 0)
  33       {
  34         sleep (1);
  35         #pragma omp cancel parallel
  36       }
  37   }
  38   return 0;
  39 }