Make sure the rwlock and per thread lock could detect races

[urcu.git] / test_perthreadlock.c

diff --git a/test_perthreadlock.c b/test_perthreadlock.c
index 076d2473976da65fc0fad262aa409e9fc8f8177f..7b6a65c8c6fb18a68531e13c19587e44aad6729c 100644 (file)
--- a/test_perthreadlock.c
+++ b/test_perthreadlock.c
@@ -65,39 +65,25 @@ struct per_thread_lock {
 
 static struct per_thread_lock *per_thread_lock;
 
-static volatile int test_go;
+static volatile int test_go, test_stop;
 
 static int wdelay;
 
-static struct test_array test_array = { 8 };
+static volatile struct test_array test_array = { 8 };
 
 static unsigned long duration;
-static time_t start_time;
-static unsigned long __thread duration_interval;
-#define DURATION_TEST_DELAY_WRITE 4
-#define DURATION_TEST_DELAY_READ 100
 
 /*
  * returns 0 if test should end.
  */
 static int test_duration_write(void)
 {
-       if (duration_interval++ >= DURATION_TEST_DELAY_WRITE) {
-               duration_interval = 0;
-               if (time(NULL) - start_time >= duration)
-                       return 0;
-       }
-       return 1;
+       return !test_stop;
 }
 
 static int test_duration_read(void)
 {
-       if (duration_interval++ >= DURATION_TEST_DELAY_READ) {
-               duration_interval = 0;
-               if (time(NULL) - start_time >= duration)
-                       return 0;
-       }
-       return 1;
+       return !test_stop;
 }
 
 static unsigned long long __thread nr_writes;
@@ -176,6 +162,7 @@ void *thr_writer(void *data)
                for (tidx = 0; tidx < nr_readers; tidx++) {
                        pthread_mutex_lock(&per_thread_lock[tidx].lock);
                }
+               test_array.a = 0;
                test_array.a = 8;
                for (tidx = nr_readers - 1; tidx >= 0; tidx--) {
                        pthread_mutex_unlock(&per_thread_lock[tidx].lock);
@@ -285,10 +272,14 @@ int main(int argc, char **argv)
                        exit(1);
        }
 
-       start_time = time(NULL);
-       test_go = 1;
        smp_mb();
 
+       test_go = 1;
+
+       sleep(duration);
+
+       test_stop = 1;
+
        for (i = 0; i < nr_readers; i++) {
                err = pthread_join(tid_reader[i], &tret);
                if (err != 0)