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40 lines
1.4 KiB
40 lines
1.4 KiB
4 months ago
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/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <util.h>
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TEST(benchmark, memory_align) {
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std::vector<char> buf(100);
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for (size_t alignment = 1; alignment <= 32; alignment *= 2) {
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for (size_t or_mask = 0; or_mask < alignment; ++or_mask) {
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uintptr_t aligned_ptr = reinterpret_cast<uintptr_t>(GetAlignedMemory(buf.data(), alignment,
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or_mask));
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ASSERT_EQ(aligned_ptr % alignment, or_mask);
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ASSERT_EQ(aligned_ptr & alignment, alignment);
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}
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}
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}
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TEST(benchmark, ptr_align) {
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std::vector<char> buf;
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for (size_t alignment = 1; alignment <= 2048; alignment *= 2) {
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uintptr_t aligned_ptr = reinterpret_cast<uintptr_t>(GetAlignedPtr(&buf, alignment, 100));
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ASSERT_EQ(aligned_ptr & alignment, alignment);
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ASSERT_EQ(aligned_ptr & (alignment - 1), 0u);
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}
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}
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