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Add -c option for read-side C.S. length to tests
[userspace-rcu.git]
/
test_mutex.c
diff --git
a/test_mutex.c
b/test_mutex.c
index 57f584252f73ba692b98b23942d92afba2985dbf..29c840b284a3a8277edf4786d22d7c4ea4b584b7 100644
(file)
--- a/
test_mutex.c
+++ b/
test_mutex.c
@@
-71,6
+71,9
@@
static volatile struct test_array test_array = { 8 };
static unsigned long duration;
static unsigned long duration;
+/* read-side C.S. duration, in us */
+static unsigned long rduration;
+
/*
* returns 0 if test should end.
*/
/*
* 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);
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()))
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(" [-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");
}
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;
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);
case 'd':
if (argc < i + 2) {
show_usage(argc, argv);
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