discardable_memory_backing_field_trial_unittest.cc 3.7 KB

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  1. // Copyright 2019 The Chromium Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style license that can be
  3. // found in the LICENSE file.
  4. #include "base/memory/discardable_memory.h"
  5. #include "base/memory/discardable_memory_internal.h"
  6. #include "base/metrics/field_trial.h"
  7. #include "base/metrics/field_trial_params.h"
  8. #include "base/test/scoped_feature_list.h"
  9. #include "build/build_config.h"
  10. #include "testing/gtest/include/gtest/gtest.h"
  11. #if BUILDFLAG(IS_POSIX)
  12. #include "base/memory/madv_free_discardable_memory_posix.h"
  13. #endif // BUILDFLAG(IS_POSIX)
  14. #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
  15. namespace base {
  16. class DiscardableMemoryBackingFieldTrialTest : public ::testing::Test {
  17. protected:
  18. DiscardableMemoryBackingFieldTrialTest() = default;
  19. ~DiscardableMemoryBackingFieldTrialTest() override = default;
  20. std::unique_ptr<test::ScopedFeatureList>
  21. GetScopedFeatureListForDiscardableMemoryTrialGroup(
  22. DiscardableMemoryTrialGroup group) {
  23. auto feature_list = std::make_unique<test::ScopedFeatureList>();
  24. feature_list->InitAndEnableFeatureWithParameters(
  25. base::features::kDiscardableMemoryBackingTrial,
  26. {{features::kDiscardableMemoryBackingParam.name,
  27. features::kDiscardableMemoryBackingParamOptions[group].name}});
  28. return feature_list;
  29. }
  30. };
  31. TEST_F(DiscardableMemoryBackingFieldTrialTest, TrialActiveOnlyIfCapable) {
  32. std::unique_ptr<test::ScopedFeatureList> scoped_feature =
  33. GetScopedFeatureListForDiscardableMemoryTrialGroup(
  34. DiscardableMemoryTrialGroup::kEmulatedSharedMemory);
  35. FieldTrial* trial =
  36. FeatureList::GetFieldTrial(features::kDiscardableMemoryBackingTrial);
  37. ASSERT_NE(trial, nullptr);
  38. // Ensure the trial goes from disabled to enabled after querying state, if and
  39. // only if we are capable of running the trial. We have force enabled the
  40. // trial feature in the feature list, so |trial_enabled| implies that the
  41. // device is capable.
  42. EXPECT_FALSE(FieldTrialList::IsTrialActive(trial->trial_name()));
  43. bool trial_enabled = DiscardableMemoryBackingFieldTrialIsEnabled();
  44. EXPECT_EQ(trial_enabled, FieldTrialList::IsTrialActive(trial->trial_name()));
  45. }
  46. TEST_F(DiscardableMemoryBackingFieldTrialTest,
  47. EmulatedSharedMemoryBackingMatchesTrialGroup) {
  48. std::unique_ptr<test::ScopedFeatureList> scoped_feature =
  49. GetScopedFeatureListForDiscardableMemoryTrialGroup(
  50. DiscardableMemoryTrialGroup::kEmulatedSharedMemory);
  51. if (!DiscardableMemoryBackingFieldTrialIsEnabled())
  52. return;
  53. DiscardableMemoryBacking backing = GetDiscardableMemoryBacking();
  54. EXPECT_EQ(backing, DiscardableMemoryBacking::kSharedMemory);
  55. }
  56. TEST_F(DiscardableMemoryBackingFieldTrialTest,
  57. MadvFreeBackingMatchesTrialGroup) {
  58. std::unique_ptr<test::ScopedFeatureList> scoped_feature =
  59. GetScopedFeatureListForDiscardableMemoryTrialGroup(
  60. DiscardableMemoryTrialGroup::kMadvFree);
  61. if (!DiscardableMemoryBackingFieldTrialIsEnabled())
  62. return;
  63. DiscardableMemoryBacking backing = GetDiscardableMemoryBacking();
  64. EXPECT_EQ(backing, DiscardableMemoryBacking::kMadvFree);
  65. }
  66. #if BUILDFLAG(IS_ANDROID)
  67. TEST_F(DiscardableMemoryBackingFieldTrialTest, AshmemBackingMatchesTrialGroup) {
  68. std::unique_ptr<test::ScopedFeatureList> scoped_feature =
  69. GetScopedFeatureListForDiscardableMemoryTrialGroup(
  70. DiscardableMemoryTrialGroup::kAshmem);
  71. if (!DiscardableMemoryBackingFieldTrialIsEnabled())
  72. return;
  73. DiscardableMemoryBacking backing = GetDiscardableMemoryBacking();
  74. EXPECT_EQ(backing, DiscardableMemoryBacking::kSharedMemory);
  75. }
  76. #endif // BUILDFLAG(IS_ANDROID)
  77. } // namespace base
  78. #endif // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) ||
  79. // BUILDFLAG(IS_CHROMEOS)