X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=test_qsbr.c;h=7ff1aca9c7600994f5b2ad30d79d0ca7fd3a0e60;hp=f56234b564c8bac4a6d01ff1b2eede53beba3e0f;hb=8b632babd61dd1708c4cf95f1f417469f8f6a528;hpb=b4fde1d45c43e18b0589a983509bea738c54cbce

diff --git a/test_qsbr.c b/test_qsbr.c
index f56234b..7ff1aca 100644
--- a/test_qsbr.c
+++ b/test_qsbr.c
@@ -65,6 +65,9 @@ static struct test_array *test_rcu_pointer;
 
 static unsigned long duration;
 
+/* read-side C.S. duration, in us */
+static unsigned long rduration;
+
 /*
  * returns 0 if test should end.
  */
@@ -164,6 +167,8 @@ void *thr_reader(void *_count)
 		debug_yield_read();
 		if (local_ptr)
 			assert(local_ptr->a == 8);
+		if (unlikely(rduration))
+			usleep(rduration);
 		_rcu_read_unlock();
 		nr_reads++;
 		/* QS each 1024 reads */
@@ -228,6 +233,7 @@ 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(" [-a cpu#] [-a cpu#]... (affinity)");
 	printf("\n");
 }
@@ -291,6 +297,13 @@ int main(int argc, char **argv)
 			use_affinity = 1;
 			printf("Adding CPU %d affinity\n", a);
 			break;
+		case 'c':
+			if (argc < i + 2) {
+				show_usage(argc, argv);
+				return -1;
+			}
+			rduration = atoi(argv[++i]);
+			break;
 		case 'd':
 			if (argc < i + 2) {
 				show_usage(argc, argv);