diff options
Diffstat (limited to 'test/utils.c')
| -rw-r--r-- | test/utils.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/test/utils.c b/test/utils.c index 60d2c83a0f..1e58184977 100644 --- a/test/utils.c +++ b/test/utils.c @@ -83,6 +83,57 @@ static int test_memmove(void) return EC_SUCCESS; } +static int test_memcpy(void) +{ + int i; + timestamp_t t0, t1, t2, t3; + char *buf; + const int buf_size = 1000; + const int len = 400; + const int dest_offset = 500; + const int iteration = 1000; + + TEST_ASSERT(shared_mem_acquire(buf_size, &buf) == EC_SUCCESS); + + for (i = 0; i < len; ++i) + buf[i] = i & 0x7f; + for (i = len; i < buf_size; ++i) + buf[i] = 0; + + t0 = get_time(); + for (i = 0; i < iteration; ++i) + memcpy(buf + dest_offset + 1, buf, len); /* unaligned */ + t1 = get_time(); + TEST_ASSERT_ARRAY_EQ(buf + dest_offset + 1, buf, len); + ccprintf(" (speed gain: %d ->", t1.val-t0.val); + + t2 = get_time(); + for (i = 0; i < iteration; ++i) + memcpy(buf + dest_offset, buf, len); /* aligned */ + t3 = get_time(); + ccprintf(" %d us) ", t3.val-t2.val); + TEST_ASSERT_ARRAY_EQ(buf + dest_offset, buf, len); + + /* Expected about 4x speed gain. Use 3x because it fluctuates */ + TEST_ASSERT((t1.val-t0.val) > (t3.val-t2.val) * 3); + + memcpy(buf + dest_offset + 1, buf + 1, len - 1); + TEST_ASSERT_ARRAY_EQ(buf + dest_offset + 1, buf + 1, len - 1); + + /* Test small copies */ + memcpy(buf + dest_offset, buf, 1); + TEST_ASSERT_ARRAY_EQ(buf + dest_offset, buf, 1); + memcpy(buf + dest_offset, buf, 4); + TEST_ASSERT_ARRAY_EQ(buf + dest_offset, buf, 4); + memcpy(buf + dest_offset + 1, buf, 1); + TEST_ASSERT_ARRAY_EQ(buf + dest_offset + 1, buf, 1); + memcpy(buf + dest_offset + 1, buf, 4); + TEST_ASSERT_ARRAY_EQ(buf + dest_offset + 1, buf, 4); + + shared_mem_release(buf); + return EC_SUCCESS; +} + static int test_strzcpy(void) { char dest[10]; @@ -305,6 +356,7 @@ void run_test(void) RUN_TEST(test_strtoi); RUN_TEST(test_parse_bool); RUN_TEST(test_memmove); + RUN_TEST(test_memcpy); RUN_TEST(test_strzcpy); RUN_TEST(test_strlen); RUN_TEST(test_strcasecmp); |