| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include <cstdint> |
| #include <mutex> |
| #include <optional> |
| #include <string> |
| |
| namespace android { |
| // Manages flags for SurfaceFlinger, including default values, system properties, and Mendel |
| // experiment configuration values. Can be called from any thread. |
| class FlagManager { |
| private: |
| // Effectively making the constructor private, while allowing std::make_unique to work |
| struct ConstructorTag {}; |
| |
| public: |
| static const FlagManager& getInstance(); |
| static FlagManager& getMutableInstance(); |
| |
| FlagManager(ConstructorTag); |
| virtual ~FlagManager(); |
| |
| void markBootCompleted(); |
| void dump(std::string& result) const; |
| |
| void setUnitTestMode(); |
| |
| /// Legacy server flags /// |
| bool test_flag() const; |
| bool use_adpf_cpu_hint() const; |
| bool use_skia_tracing() const; |
| |
| /// Trunk stable server flags /// |
| bool late_boot_misc2() const; |
| bool dont_skip_on_early() const; |
| |
| /// Trunk stable readonly flags /// |
| bool connected_display() const; |
| bool enable_small_area_detection() const; |
| bool misc1() const; |
| bool vrr_config() const; |
| bool hotplug2() const; |
| bool hdcp_level_hal() const; |
| bool multithreaded_present() const; |
| |
| protected: |
| // overridden for unit tests |
| virtual std::optional<bool> getBoolProperty(const char*) const; |
| virtual bool getServerConfigurableFlag(const char*) const; |
| |
| private: |
| friend class TestableFlagManager; |
| |
| FlagManager(const FlagManager&) = delete; |
| |
| void dumpFlag(std::string& result, bool readonly, const char* name, |
| std::function<bool()> getter) const; |
| |
| std::atomic_bool mBootCompleted = false; |
| std::atomic_bool mUnitTestMode = false; |
| |
| static std::unique_ptr<FlagManager> mInstance; |
| static std::once_flag mOnce; |
| }; |
| } // namespace android |