/*
* @@name:	mem_model.3c
* @@type:	C
* @@compilable:	yes
* @@linkable:	yes
* @@expect:	rt-error
*/
#include <omp.h>
#include <stdio.h>
int main()
{
    int flag=0;

    #pragma omp parallel num_threads(3)
    {
        if(omp_get_thread_num()==0)
        {
            /* Set flag to release thread 1 */
            #pragma omp atomic update
            flag++;
            /* Flush of flag is implied by the atomic directive */
        }
        else if(omp_get_thread_num()==1)
        {
            /* Loop until we see that flag reaches 1*/
            #pragma omp flush(flag)
            while(flag < 1)
            {
                #pragma omp flush(flag)
            }
            printf("Thread 1 awoken\n");

            /* Set flag to release thread 2 */
            #pragma omp atomic update
            flag++;
            /* Flush of flag is implied by the atomic directive */
        }
        else if(omp_get_thread_num()==2)
        {
            /* Loop until we see that flag reaches 2 */
            #pragma omp flush(flag)
            while(flag < 2)
            {
                #pragma omp flush(flag)
            }
            printf("Thread 2 awoken\n");
        }
    }
    return 0;
}