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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/metrics/power/power_metrics_provider_mac.h"
#import <Foundation/Foundation.h>
#include <memory>
#include <string_view>
#include <utility>
#include "base/functional/bind.h"
#include "base/location.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/process/process.h"
#include "base/strings/strcat.h"
#include "base/task/thread_pool.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "components/power_metrics/smc_mac.h"
namespace {
constexpr base::TimeDelta kStartupPowerMetricsCollectionDuration =
base::Seconds(30);
constexpr base::TimeDelta kStartupPowerMetricsCollectionInterval =
base::Seconds(1);
constexpr base::TimeDelta kPostStartupPowerMetricsCollectionInterval =
base::Seconds(60);
// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
enum class ThermalStateUMA {
kNominal = 0,
kFair = 1,
kSerious = 2,
kCritical = 3,
kMaxValue = kCritical,
};
ThermalStateUMA ThermalStateToUmaEnumValue(NSProcessInfoThermalState state) {
switch (state) {
case NSProcessInfoThermalStateNominal:
return ThermalStateUMA::kNominal;
case NSProcessInfoThermalStateFair:
return ThermalStateUMA::kFair;
case NSProcessInfoThermalStateSerious:
return ThermalStateUMA::kSerious;
case NSProcessInfoThermalStateCritical:
return ThermalStateUMA::kCritical;
}
}
void RecordSMCHistogram(std::string_view prefix,
std::string_view suffix,
std::optional<double> watts) {
if (watts.has_value()) {
double milliwatts = watts.value() * 1000;
base::UmaHistogramCounts100000(base::StrCat({prefix, suffix}), milliwatts);
}
}
} // namespace
class PowerMetricsProvider::Impl {
public:
Impl() : smc_reader_(power_metrics::SMCReader::Create()) {
ScheduleCollection();
}
~Impl() = default;
Impl(const Impl&) = delete;
Impl& operator=(const Impl&) = delete;
private:
bool IsInStartup() {
if (could_be_in_startup_) {
const base::TimeDelta process_uptime =
base::Time::Now() - base::Process::Current().CreationTime();
if (process_uptime >= kStartupPowerMetricsCollectionDuration)
could_be_in_startup_ = false;
}
return could_be_in_startup_;
}
void ScheduleCollection() {
timer_.Start(FROM_HERE,
IsInStartup() ? kStartupPowerMetricsCollectionInterval
: kPostStartupPowerMetricsCollectionInterval,
this, &Impl::Collect);
}
void Collect() {
ScheduleCollection();
if (IsInStartup()) {
RecordSMC("DuringStartup");
} else {
RecordSMC("All");
RecordThermal();
}
}
void RecordSMC(std::string_view suffix) {
if (!smc_reader_)
return;
RecordSMCHistogram("Power.Mac.Total.", suffix,
smc_reader_->ReadKey(SMCKeyIdentifier::TotalPower));
RecordSMCHistogram("Power.Mac.CPU.", suffix,
smc_reader_->ReadKey(SMCKeyIdentifier::CPUPower));
RecordSMCHistogram("Power.Mac.GPUi.", suffix,
smc_reader_->ReadKey(SMCKeyIdentifier::iGPUPower));
RecordSMCHistogram("Power.Mac.GPU0.", suffix,
smc_reader_->ReadKey(SMCKeyIdentifier::GPU0Power));
RecordSMCHistogram("Power.Mac.GPU1.", suffix,
smc_reader_->ReadKey(SMCKeyIdentifier::GPU1Power));
}
void RecordThermal() {
UMA_HISTOGRAM_ENUMERATION(
"Power.Mac.ThermalState",
ThermalStateToUmaEnumValue([[NSProcessInfo processInfo] thermalState]));
}
base::OneShotTimer timer_;
std::unique_ptr<power_metrics::SMCReader> smc_reader_;
bool could_be_in_startup_ = true;
};
PowerMetricsProvider::PowerMetricsProvider() = default;
PowerMetricsProvider::~PowerMetricsProvider() = default;
void PowerMetricsProvider::OnRecordingEnabled() {
impl_ = base::SequenceBound<Impl>(base::ThreadPool::CreateSequencedTaskRunner(
{base::MayBlock(), base::TaskPriority::USER_VISIBLE,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN}));
}
void PowerMetricsProvider::OnRecordingDisabled() {
impl_.reset();
}
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