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/* { dg-do run } */
#include <stdio.h>
#include <omp.h>
void
skip (int i)
{
}
void
work (int i)
{
}
int
main ()
{
omp_lock_t lck;
int id;
omp_init_lock (&lck);
#pragma omp parallel shared(lck) private(id)
{
id = omp_get_thread_num ();
omp_set_lock (&lck);
/* only one thread at a time can execute this printf */
printf ("My thread id is %d.\n", id);
omp_unset_lock (&lck);
while (!omp_test_lock (&lck))
{
skip (id); /* we do not yet have the lock,
so we must do something else */
}
work (id); /* we now have the lock
and can do the work */
omp_unset_lock (&lck);
}
omp_destroy_lock (&lck);
return 0;
}
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