Add per thread lock test case

[urcu.git] / test_urcu_timing.c

diff --git a/test_urcu_timing.c b/test_urcu_timing.c
index cf70709c9fe7e58beaab0f2e3920391d06f43d02..5065891a50af55b7bb10e9d1a788020f19a3bbbd 100644 (file)
--- a/test_urcu_timing.c
+++ b/test_urcu_timing.c
@@ -83,12 +83,15 @@ static struct test_array *test_rcu_pointer;
 #define INNER_READ_LOOP        100000U
 #define READ_LOOP ((unsigned long long)OUTER_READ_LOOP * INNER_READ_LOOP)
 
-#define WRITE_LOOP 2000U
+#define OUTER_WRITE_LOOP 10U
+#define INNER_WRITE_LOOP 200U
+#define WRITE_LOOP ((unsigned long long)OUTER_WRITE_LOOP * INNER_WRITE_LOOP)
 
 #define NR_READ 10
 #define NR_WRITE 9
 
 static cycles_t reader_time[NR_READ] __attribute__((aligned(128)));
+static cycles_t writer_time[NR_WRITE] __attribute__((aligned(128)));
 
 void *thr_reader(void *arg)
 {
@@ -128,28 +131,34 @@ void *thr_reader(void *arg)
 
 void *thr_writer(void *arg)
 {
-       int i;
+       int i, j;
        struct test_array *new, *old;
+       cycles_t time1, time2;
 
        printf("thread_begin %s, thread id : %lx, tid %lu\n",
                        "writer", pthread_self(), (unsigned long)gettid());
        sleep(2);
 
-       for (i = 0; i < WRITE_LOOP; i++) {
-               new = malloc(sizeof(struct test_array));
-               rcu_copy_mutex_lock();
-               old = test_rcu_pointer;
-               if (old) {
-                       assert(old->a == 8);
-               }
-               new->a = 8;
-               old = rcu_publish_content(&test_rcu_pointer, new);
-               rcu_copy_mutex_unlock();
-               /* can be done after unlock */
-               if (old) {
-                       old->a = 0;
+       for (i = 0; i < OUTER_WRITE_LOOP; i++) {
+               time1 = get_cycles();
+               for (j = 0; j < INNER_WRITE_LOOP; j++) {
+                       new = malloc(sizeof(struct test_array));
+                       rcu_copy_mutex_lock();
+                       old = test_rcu_pointer;
+                       if (old) {
+                               assert(old->a == 8);
+                       }
+                       new->a = 8;
+                       old = rcu_publish_content(&test_rcu_pointer, new);
+                       rcu_copy_mutex_unlock();
+                       /* can be done after unlock */
+                       if (old) {
+                               old->a = 0;
+                       }
+                       free(old);
                }
-               free(old);
+               time2 = get_cycles();
+               writer_time[(unsigned long)arg] += time2 - time1;
                usleep(1);
        }
 
@@ -164,7 +173,8 @@ int main()
        pthread_t tid_reader[NR_READ], tid_writer[NR_WRITE];
        void *tret;
        int i;
-       cycles_t tot_time = 0;
+       cycles_t tot_rtime = 0;
+       cycles_t tot_wtime = 0;
 
        printf("thread %-6s, thread id : %lx, tid %lu\n",
                        "main", pthread_self(), (unsigned long)gettid());
@@ -176,7 +186,8 @@ int main()
                        exit(1);
        }
        for (i = 0; i < NR_WRITE; i++) {
-               err = pthread_create(&tid_writer[i], NULL, thr_writer, NULL);
+               err = pthread_create(&tid_writer[i], NULL, thr_writer,
+                                    (void *)(long)i);
                if (err != 0)
                        exit(1);
        }
@@ -187,16 +198,19 @@ int main()
                err = pthread_join(tid_reader[i], &tret);
                if (err != 0)
                        exit(1);
-               tot_time += reader_time[i];
+               tot_rtime += reader_time[i];
        }
        for (i = 0; i < NR_WRITE; i++) {
                err = pthread_join(tid_writer[i], &tret);
                if (err != 0)
                        exit(1);
+               tot_wtime += writer_time[i];
        }
        free(test_rcu_pointer);
        printf("Time per read : %g cycles\n",
-              (double)tot_time / ((double)NR_READ * (double)READ_LOOP));
+              (double)tot_rtime / ((double)NR_READ * (double)READ_LOOP));
+       printf("Time per write : %g cycles\n",
+              (double)tot_wtime / ((double)NR_WRITE * (double)WRITE_LOOP));
 
        return 0;
 }