diff options
Diffstat (limited to 'test/utils.c')
| -rw-r--r-- | test/utils.c | 43 |
1 files changed, 35 insertions, 8 deletions
diff --git a/test/utils.c b/test/utils.c index 1e58184977..9e1138074f 100644 --- a/test/utils.c +++ b/test/utils.c @@ -68,18 +68,45 @@ static int test_parse_bool(void) static int test_memmove(void) { - char buf[100]; int i; + timestamp_t t0, t1, t2, t3; + char *buf; + const int buf_size = 1000; + const int len = 400; + const int iteration = 1000; + + TEST_ASSERT(shared_mem_acquire(buf_size, &buf) == EC_SUCCESS); - for (i = 0; i < 100; ++i) + for (i = 0; i < len; ++i) + buf[i] = i & 0x7f; + for (i = len; i < buf_size; ++i) buf[i] = 0; - for (i = 0; i < 30; ++i) - buf[i] = i; - memmove(buf + 60, buf, 30); - TEST_ASSERT_ARRAY_EQ(buf, buf + 60, 30); - memmove(buf + 10, buf, 30); - TEST_ASSERT_ARRAY_EQ(buf + 10, buf + 60, 30); + t0 = get_time(); + for (i = 0; i < iteration; ++i) + memmove(buf + 101, buf, len); /* unaligned */ + t1 = get_time(); + TEST_ASSERT_ARRAY_EQ(buf + 101, buf, len); + ccprintf(" (speed gain: %d ->", t1.val-t0.val); + + t2 = get_time(); + for (i = 0; i < iteration; ++i) + memmove(buf + 100, buf, len); /* aligned */ + t3 = get_time(); + ccprintf(" %d us) ", t3.val-t2.val); + TEST_ASSERT_ARRAY_EQ(buf + 100, buf, len); + + /* Expected about 4x speed gain. Use 3x because it fluctuates */ + TEST_ASSERT((t1.val-t0.val) > (t3.val-t2.val) * 3); + + /* Test small moves */ + memmove(buf + 1, buf, 1); + TEST_ASSERT_ARRAY_EQ(buf + 1, buf, 1); + memmove(buf + 5, buf, 4); + memmove(buf + 1, buf, 4); + TEST_ASSERT_ARRAY_EQ(buf + 1, buf + 5, 4); + + shared_mem_release(buf); return EC_SUCCESS; } |