1  #include <glib.h>
       2  
       3  static void
       4  test_bitlocks (void)
       5  {
       6    guint64 start = g_get_monotonic_time ();
       7    gint lock = 0;
       8    guint i;
       9    guint n_iterations;
      10  
      11    n_iterations = g_test_perf () ? 100000000 : 1;
      12  
      13    for (i = 0; i < n_iterations; i++)
      14      {
      15        g_bit_lock (&lock, 0);
      16        g_bit_unlock (&lock, 0);
      17      }
      18  
      19    {
      20      gdouble elapsed;
      21      gdouble rate;
      22  
      23      elapsed = g_get_monotonic_time () - start;
      24      elapsed /= 1000000;
      25      rate = n_iterations / elapsed;
      26  
      27      g_test_maximized_result (rate, "iterations per second");
      28    }
      29  }
      30  
      31  int
      32  main (int argc, char **argv)
      33  {
      34    g_test_init (&argc, &argv, NULL);
      35  
      36    g_test_add_func ("/bitlock/performance/uncontended", test_bitlocks);
      37  
      38    return g_test_run ();
      39  }