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/*
* 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";
static constexpr const int64_t kDemoFlag = -1;
FlagManager::~FlagManager() = default;
void FlagManager::dump(std::string& result) const {
base::StringAppendF(&result, "FlagManager values: \n");
base::StringAppendF(&result, "demo_flag: %" PRId64 "\n", demo_flag());
base::StringAppendF(&result, "use_adpf_cpu_hint: %s\n", use_adpf_cpu_hint() ? "true" : "false");
base::StringAppendF(&result, "use_skia_tracing: %s\n", use_skia_tracing() ? "true" : "false");
}
namespace {
template <typename T>
std::optional<T> doParse(const char* str);
template <>
[[maybe_unused]] std::optional<int32_t> doParse(const char* str) {
int32_t ret;
return base::ParseInt(str, &ret) ? std::make_optional(ret) : std::nullopt;
}
template <>
[[maybe_unused]] std::optional<int64_t> doParse(const char* str) {
int64_t ret;
return base::ParseInt(str, &ret) ? std::make_optional(ret) : std::nullopt;
}
template <>
[[maybe_unused]] std::optional<bool> doParse(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;
}
}
} // namespace
std::string FlagManager::getServerConfigurableFlag(const std::string& experimentFlagName) const {
return server_configurable_flags::GetServerConfigurableFlag(kExperimentNamespace,
experimentFlagName, "");
}
template int32_t FlagManager::getValue<int32_t>(const std::string&, std::optional<int32_t>,
int32_t) const;
template int64_t FlagManager::getValue<int64_t>(const std::string&, std::optional<int64_t>,
int64_t) const;
template bool FlagManager::getValue<bool>(const std::string&, std::optional<bool>, bool) const;
template <typename T>
T FlagManager::getValue(const std::string& experimentFlagName, std::optional<T> systemPropertyOpt,
T defaultValue) const {
// System property takes precedence over the experiment config server value.
if (systemPropertyOpt.has_value()) {
return *systemPropertyOpt;
}
std::string str = getServerConfigurableFlag(experimentFlagName);
return str.empty() ? defaultValue : doParse<T>(str.c_str()).value_or(defaultValue);
}
int64_t FlagManager::demo_flag() const {
std::optional<int64_t> sysPropVal = std::nullopt;
return getValue("DemoFeature__demo_flag", sysPropVal, kDemoFlag);
}
bool FlagManager::use_adpf_cpu_hint() const {
std::optional<bool> sysPropVal =
doParse<bool>(base::GetProperty("debug.sf.enable_adpf_cpu_hint", "").c_str());
return getValue("AdpfFeature__adpf_cpu_hint", sysPropVal, false);
}
bool FlagManager::use_skia_tracing() const {
std::optional<bool> sysPropVal =
doParse<bool>(base::GetProperty(PROPERTY_SKIA_ATRACE_ENABLED, "").c_str());
return getValue("SkiaTracingFeature__use_skia_tracing", sysPropVal, false);
}
} // namespace android
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