| /* |
| * 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. |
| */ |
| |
| #include "FlagManager.h" |
| |
| #include <SurfaceFlingerProperties.sysprop.h> |
| #include <android-base/parsebool.h> |
| #include <android-base/parseint.h> |
| #include <android-base/properties.h> |
| #include <android-base/stringprintf.h> |
| #include <log/log.h> |
| #include <renderengine/RenderEngine.h> |
| #include <server_configurable_flags/get_flags.h> |
| #include <cinttypes> |
| |
| namespace android { |
| static constexpr const char* kExperimentNamespace = "surface_flinger_native_boot"; |
| |
| std::unique_ptr<FlagManager> FlagManager::mInstance; |
| std::once_flag FlagManager::mOnce; |
| |
| FlagManager::FlagManager(ConstructorTag) {} |
| FlagManager::~FlagManager() = default; |
| |
| namespace { |
| std::optional<bool> parseBool(const char* str) { |
| base::ParseBoolResult parseResult = base::ParseBool(str); |
| switch (parseResult) { |
| case base::ParseBoolResult::kTrue: |
| return std::make_optional(true); |
| case base::ParseBoolResult::kFalse: |
| return std::make_optional(false); |
| case base::ParseBoolResult::kError: |
| return std::nullopt; |
| } |
| } |
| |
| void dumpFlag(std::string& result, const char* name, std::function<bool()> getter) { |
| base::StringAppendF(&result, "%s: %s\n", name, getter() ? "true" : "false"); |
| } |
| |
| } // namespace |
| |
| const FlagManager& FlagManager::getInstance() { |
| return getMutableInstance(); |
| } |
| |
| FlagManager& FlagManager::getMutableInstance() { |
| std::call_once(mOnce, [&] { |
| LOG_ALWAYS_FATAL_IF(mInstance, "Instance already created"); |
| mInstance = std::make_unique<FlagManager>(ConstructorTag{}); |
| }); |
| |
| return *mInstance; |
| } |
| |
| void FlagManager::markBootCompleted() { |
| mBootCompleted = true; |
| } |
| |
| void FlagManager::dump(std::string& result) const { |
| #define DUMP_FLAG(name) dumpFlag(result, #name, std::bind(&FlagManager::name, this)); |
| |
| base::StringAppendF(&result, "FlagManager values: \n"); |
| DUMP_FLAG(use_adpf_cpu_hint); |
| DUMP_FLAG(use_skia_tracing); |
| |
| #undef DUMP_FLAG |
| } |
| |
| std::optional<bool> FlagManager::getBoolProperty(const char* property) const { |
| return parseBool(base::GetProperty(property, "").c_str()); |
| } |
| |
| bool FlagManager::getServerConfigurableFlag(const char* experimentFlagName) const { |
| const auto value = server_configurable_flags::GetServerConfigurableFlag(kExperimentNamespace, |
| experimentFlagName, ""); |
| const auto res = parseBool(value.c_str()); |
| return res.has_value() && res.value(); |
| } |
| |
| #define FLAG_MANAGER_SERVER_FLAG(name, syspropOverride, serverFlagName) \ |
| bool FlagManager::name() const { \ |
| LOG_ALWAYS_FATAL_IF(!mBootCompleted, \ |
| "Can't read %s before boot completed as it is server writable", \ |
| __func__); \ |
| const auto debugOverride = getBoolProperty(syspropOverride); \ |
| if (debugOverride.has_value()) return debugOverride.value(); \ |
| return getServerConfigurableFlag(serverFlagName); \ |
| } |
| |
| FLAG_MANAGER_SERVER_FLAG(test_flag, "", "") |
| FLAG_MANAGER_SERVER_FLAG(use_adpf_cpu_hint, "debug.sf.enable_adpf_cpu_hint", |
| "AdpfFeature__adpf_cpu_hint") |
| FLAG_MANAGER_SERVER_FLAG(use_skia_tracing, PROPERTY_SKIA_ATRACE_ENABLED, |
| "SkiaTracingFeature__use_skia_tracing") |
| |
| #undef FLAG_MANAGER_SERVER_FLAG |
| |
| } // namespace android |