X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=test_mutex.c;fp=test_mutex.c;h=29c840b284a3a8277edf4786d22d7c4ea4b584b7;hb=8b632babd61dd1708c4cf95f1f417469f8f6a528;hp=57f584252f73ba692b98b23942d92afba2985dbf;hpb=b4fde1d45c43e18b0589a983509bea738c54cbce;p=urcu.git

diff --git a/test_mutex.c b/test_mutex.c
index 57f5842..29c840b 100644
--- a/test_mutex.c
+++ b/test_mutex.c
@@ -71,6 +71,9 @@ static volatile struct test_array test_array = { 8 };
 
 static unsigned long duration;
 
+/* read-side C.S. duration, in us */
+static unsigned long rduration;
+
 /*
  * returns 0 if test should end.
  */
@@ -130,6 +133,8 @@ void *thr_reader(void *data)
 	for (;;) {
 		pthread_mutex_lock(&lock);
 		assert(test_array.a == 8);
+		if (unlikely(rduration))
+			usleep(rduration);
 		pthread_mutex_unlock(&lock);
 		nr_reads++;
 		if (unlikely(!test_duration_read()))
@@ -180,6 +185,7 @@ 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");
 }
@@ -244,6 +250,13 @@ 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);