1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18 #include <util.h>
19
TEST(benchmark,memory_align)20 TEST(benchmark, memory_align) {
21 std::vector<char> buf(100);
22 for (size_t alignment = 1; alignment <= 32; alignment *= 2) {
23 for (size_t or_mask = 0; or_mask < alignment; ++or_mask) {
24 uintptr_t aligned_ptr = reinterpret_cast<uintptr_t>(GetAlignedMemory(buf.data(), alignment,
25 or_mask));
26 ASSERT_EQ(aligned_ptr % alignment, or_mask);
27 ASSERT_EQ(aligned_ptr & alignment, alignment);
28 }
29 }
30 }
31
TEST(benchmark,ptr_align)32 TEST(benchmark, ptr_align) {
33 std::vector<char> buf;
34 for (size_t alignment = 1; alignment <= 2048; alignment *= 2) {
35 uintptr_t aligned_ptr = reinterpret_cast<uintptr_t>(GetAlignedPtr(&buf, alignment, 100));
36 ASSERT_EQ(aligned_ptr & alignment, alignment);
37 ASSERT_EQ(aligned_ptr & (alignment - 1), 0u);
38 }
39 }
40