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09a8440b45
PR-URL: https://github.com/nodejs/node/pull/51362 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
65 lines
2.5 KiB
C++
65 lines
2.5 KiB
C++
// Copyright 2023 The Abseil Authors
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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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// https://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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#include "absl/base/prefetch.h"
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#include <memory>
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#include "gtest/gtest.h"
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namespace {
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// Below tests exercise the functions only to guarantee they compile and execute
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// correctly. We make no attempt at verifying any prefetch instructions being
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// generated and executed: we assume the various implementation in terms of
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// __builtin_prefetch() or x86 intrinsics to be correct and well tested.
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TEST(PrefetchTest, PrefetchToLocalCache_StackA) {
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char buf[100] = {};
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absl::PrefetchToLocalCache(buf);
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absl::PrefetchToLocalCacheNta(buf);
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absl::PrefetchToLocalCacheForWrite(buf);
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}
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TEST(PrefetchTest, PrefetchToLocalCache_Heap) {
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auto memory = std::make_unique<char[]>(200 << 10);
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memset(memory.get(), 0, 200 << 10);
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absl::PrefetchToLocalCache(memory.get());
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absl::PrefetchToLocalCacheNta(memory.get());
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absl::PrefetchToLocalCacheForWrite(memory.get());
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absl::PrefetchToLocalCache(memory.get() + (50 << 10));
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absl::PrefetchToLocalCacheNta(memory.get() + (50 << 10));
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absl::PrefetchToLocalCacheForWrite(memory.get() + (50 << 10));
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absl::PrefetchToLocalCache(memory.get() + (100 << 10));
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absl::PrefetchToLocalCacheNta(memory.get() + (100 << 10));
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absl::PrefetchToLocalCacheForWrite(memory.get() + (100 << 10));
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absl::PrefetchToLocalCache(memory.get() + (150 << 10));
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absl::PrefetchToLocalCacheNta(memory.get() + (150 << 10));
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absl::PrefetchToLocalCacheForWrite(memory.get() + (150 << 10));
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}
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TEST(PrefetchTest, PrefetchToLocalCache_Nullptr) {
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absl::PrefetchToLocalCache(nullptr);
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absl::PrefetchToLocalCacheNta(nullptr);
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absl::PrefetchToLocalCacheForWrite(nullptr);
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}
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TEST(PrefetchTest, PrefetchToLocalCache_InvalidPtr) {
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absl::PrefetchToLocalCache(reinterpret_cast<const void*>(0x785326532L));
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absl::PrefetchToLocalCacheNta(reinterpret_cast<const void*>(0x785326532L));
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absl::PrefetchToLocalCacheForWrite(reinterpret_cast<const void*>(0x78532L));
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}
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} // namespace
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