1  /* { dg-do run } */
       2  
       3  #include <omp.h>
       4  #include <assert.h>
       5  
       6  /* Test tasks with detach clause on an offload device.  Each device
       7     thread spawns off a chain of tasks, that can then be executed by
       8     any available thread.  */
       9  
      10  int main (void)
      11  {
      12    int x = 0, y = 0, z = 0;
      13    int thread_count;
      14    omp_event_handle_t detach_event1, detach_event2;
      15  
      16    #pragma omp target map (tofrom: x, y, z) map (from: thread_count)
      17      #pragma omp parallel private (detach_event1, detach_event2)
      18        {
      19  	#pragma omp single
      20  	  thread_count = omp_get_num_threads ();
      21  
      22  	#pragma omp task detach(detach_event1) untied
      23  	  #pragma omp atomic update
      24  	    x++;
      25  
      26  	#pragma omp task detach(detach_event2) untied
      27  	{
      28  	  #pragma omp atomic update
      29  	    y++;
      30  	  omp_fulfill_event (detach_event1);
      31  	}
      32  
      33  	#pragma omp task untied
      34  	{
      35  	  #pragma omp atomic update
      36  	    z++;
      37  	  omp_fulfill_event (detach_event2);
      38  	}
      39        }
      40  
      41    assert (x == thread_count);
      42    assert (y == thread_count);
      43    assert (z == thread_count);
      44  }