111 lines
4.2 KiB
C++
111 lines
4.2 KiB
C++
/*
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* Copyright (C) 2021 The Android Open Source Project
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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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* http://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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*/
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#include "FlagManager.h"
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#include <SurfaceFlingerProperties.sysprop.h>
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#include <android-base/parsebool.h>
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#include <android-base/parseint.h>
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#include <android-base/properties.h>
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#include <android-base/stringprintf.h>
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#include <log/log.h>
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#include <renderengine/RenderEngine.h>
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#include <server_configurable_flags/get_flags.h>
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#include <cinttypes>
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namespace android {
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static constexpr const char* kExperimentNamespace = "surface_flinger_native_boot";
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static constexpr const int64_t kDemoFlag = -1;
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FlagManager::~FlagManager() = default;
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void FlagManager::dump(std::string& result) const {
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base::StringAppendF(&result, "FlagManager values: \n");
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base::StringAppendF(&result, "demo_flag: %" PRId64 "\n", demo_flag());
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base::StringAppendF(&result, "use_adpf_cpu_hint: %s\n", use_adpf_cpu_hint() ? "true" : "false");
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base::StringAppendF(&result, "use_skia_tracing: %s\n", use_skia_tracing() ? "true" : "false");
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}
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namespace {
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template <typename T>
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std::optional<T> doParse(const char* str);
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template <>
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[[maybe_unused]] std::optional<int32_t> doParse(const char* str) {
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int32_t ret;
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return base::ParseInt(str, &ret) ? std::make_optional(ret) : std::nullopt;
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}
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template <>
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[[maybe_unused]] std::optional<int64_t> doParse(const char* str) {
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int64_t ret;
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return base::ParseInt(str, &ret) ? std::make_optional(ret) : std::nullopt;
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}
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template <>
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[[maybe_unused]] std::optional<bool> doParse(const char* str) {
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base::ParseBoolResult parseResult = base::ParseBool(str);
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switch (parseResult) {
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case base::ParseBoolResult::kTrue:
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return std::make_optional(true);
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case base::ParseBoolResult::kFalse:
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return std::make_optional(false);
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case base::ParseBoolResult::kError:
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return std::nullopt;
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}
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}
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} // namespace
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std::string FlagManager::getServerConfigurableFlag(const std::string& experimentFlagName) const {
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return server_configurable_flags::GetServerConfigurableFlag(kExperimentNamespace,
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experimentFlagName, "");
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}
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template int32_t FlagManager::getValue<int32_t>(const std::string&, std::optional<int32_t>,
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int32_t) const;
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template int64_t FlagManager::getValue<int64_t>(const std::string&, std::optional<int64_t>,
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int64_t) const;
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template bool FlagManager::getValue<bool>(const std::string&, std::optional<bool>, bool) const;
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template <typename T>
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T FlagManager::getValue(const std::string& experimentFlagName, std::optional<T> systemPropertyOpt,
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T defaultValue) const {
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// System property takes precedence over the experiment config server value.
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if (systemPropertyOpt.has_value()) {
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return *systemPropertyOpt;
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}
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std::string str = getServerConfigurableFlag(experimentFlagName);
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return str.empty() ? defaultValue : doParse<T>(str.c_str()).value_or(defaultValue);
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}
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int64_t FlagManager::demo_flag() const {
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std::optional<int64_t> sysPropVal = std::nullopt;
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return getValue("DemoFeature__demo_flag", sysPropVal, kDemoFlag);
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}
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bool FlagManager::use_adpf_cpu_hint() const {
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std::optional<bool> sysPropVal =
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doParse<bool>(base::GetProperty("debug.sf.enable_adpf_cpu_hint", "").c_str());
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return getValue("AdpfFeature__adpf_cpu_hint", sysPropVal, false);
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}
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bool FlagManager::use_skia_tracing() const {
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std::optional<bool> sysPropVal =
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doParse<bool>(base::GetProperty(PROPERTY_SKIA_ATRACE_ENABLED, "").c_str());
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return getValue("SkiaTracingFeature__use_skia_tracing", sysPropVal, false);
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}
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} // namespace android
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