Delay reader in loops, not us

[urcu.git] / test_urcu.c

diff --git a/test_urcu.c b/test_urcu.c
index 85f4a36ce8e1eb3a35a62854b916ff9b284ced50..fe469284ef1122f864ed9bb467ef49997cbb1afa 100644 (file)
--- a/test_urcu.c
+++ b/test_urcu.c
@@ -69,9 +69,15 @@ static struct test_array *test_rcu_pointer;
 
 static unsigned long duration;
 
-/* read-side C.S. duration, in us */
+/* read-side C.S. duration, in loops */
 static unsigned long rduration;
 
+static inline void loop_sleep(unsigned long l)
+{
+       while(l-- != 0)
+               cpu_relax();
+}
+
 /*
  * returns 0 if test should end.
  */
@@ -172,7 +178,7 @@ void *thr_reader(void *_count)
                if (local_ptr)
                        assert(local_ptr->a == 8);
                if (unlikely(rduration))
-                       usleep(rduration);
+                       loop_sleep(rduration);
                rcu_read_unlock();
                nr_reads++;
                if (unlikely(!test_duration_read()))
@@ -234,7 +240,7 @@ void show_usage(int argc, char **argv)
        printf(" [-r] [-w] (yield reader and/or writer)");
 #endif
        printf(" [-d delay] (writer period (us))");
-       printf(" [-c duration] (reader C.S. duration (us))");
+       printf(" [-c duration] (reader C.S. duration (in loops))");
        printf(" [-a cpu#] [-a cpu#]... (affinity)");
        printf("\n");
 }