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- // Copyright 2019 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "base/memory/discardable_memory.h"
- #include "base/memory/discardable_memory_internal.h"
- #include "base/metrics/field_trial.h"
- #include "base/metrics/field_trial_params.h"
- #include "base/test/scoped_feature_list.h"
- #include "build/build_config.h"
- #include "testing/gtest/include/gtest/gtest.h"
- #if BUILDFLAG(IS_POSIX)
- #include "base/memory/madv_free_discardable_memory_posix.h"
- #endif // BUILDFLAG(IS_POSIX)
- #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
- namespace base {
- class DiscardableMemoryBackingFieldTrialTest : public ::testing::Test {
- protected:
- DiscardableMemoryBackingFieldTrialTest() = default;
- ~DiscardableMemoryBackingFieldTrialTest() override = default;
- std::unique_ptr<test::ScopedFeatureList>
- GetScopedFeatureListForDiscardableMemoryTrialGroup(
- DiscardableMemoryTrialGroup group) {
- auto feature_list = std::make_unique<test::ScopedFeatureList>();
- feature_list->InitAndEnableFeatureWithParameters(
- base::features::kDiscardableMemoryBackingTrial,
- {{features::kDiscardableMemoryBackingParam.name,
- features::kDiscardableMemoryBackingParamOptions[group].name}});
- return feature_list;
- }
- };
- TEST_F(DiscardableMemoryBackingFieldTrialTest, TrialActiveOnlyIfCapable) {
- std::unique_ptr<test::ScopedFeatureList> scoped_feature =
- GetScopedFeatureListForDiscardableMemoryTrialGroup(
- DiscardableMemoryTrialGroup::kEmulatedSharedMemory);
- FieldTrial* trial =
- FeatureList::GetFieldTrial(features::kDiscardableMemoryBackingTrial);
- ASSERT_NE(trial, nullptr);
- // Ensure the trial goes from disabled to enabled after querying state, if and
- // only if we are capable of running the trial. We have force enabled the
- // trial feature in the feature list, so |trial_enabled| implies that the
- // device is capable.
- EXPECT_FALSE(FieldTrialList::IsTrialActive(trial->trial_name()));
- bool trial_enabled = DiscardableMemoryBackingFieldTrialIsEnabled();
- EXPECT_EQ(trial_enabled, FieldTrialList::IsTrialActive(trial->trial_name()));
- }
- TEST_F(DiscardableMemoryBackingFieldTrialTest,
- EmulatedSharedMemoryBackingMatchesTrialGroup) {
- std::unique_ptr<test::ScopedFeatureList> scoped_feature =
- GetScopedFeatureListForDiscardableMemoryTrialGroup(
- DiscardableMemoryTrialGroup::kEmulatedSharedMemory);
- if (!DiscardableMemoryBackingFieldTrialIsEnabled())
- return;
- DiscardableMemoryBacking backing = GetDiscardableMemoryBacking();
- EXPECT_EQ(backing, DiscardableMemoryBacking::kSharedMemory);
- }
- TEST_F(DiscardableMemoryBackingFieldTrialTest,
- MadvFreeBackingMatchesTrialGroup) {
- std::unique_ptr<test::ScopedFeatureList> scoped_feature =
- GetScopedFeatureListForDiscardableMemoryTrialGroup(
- DiscardableMemoryTrialGroup::kMadvFree);
- if (!DiscardableMemoryBackingFieldTrialIsEnabled())
- return;
- DiscardableMemoryBacking backing = GetDiscardableMemoryBacking();
- EXPECT_EQ(backing, DiscardableMemoryBacking::kMadvFree);
- }
- #if BUILDFLAG(IS_ANDROID)
- TEST_F(DiscardableMemoryBackingFieldTrialTest, AshmemBackingMatchesTrialGroup) {
- std::unique_ptr<test::ScopedFeatureList> scoped_feature =
- GetScopedFeatureListForDiscardableMemoryTrialGroup(
- DiscardableMemoryTrialGroup::kAshmem);
- if (!DiscardableMemoryBackingFieldTrialIsEnabled())
- return;
- DiscardableMemoryBacking backing = GetDiscardableMemoryBacking();
- EXPECT_EQ(backing, DiscardableMemoryBacking::kSharedMemory);
- }
- #endif // BUILDFLAG(IS_ANDROID)
- } // namespace base
- #endif // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) ||
- // BUILDFLAG(IS_CHROMEOS)
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