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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/arc/metrics/arc_metrics_service.h"
#include <string>
#include <utility>
#include "base/logging.h"
#include "base/metrics/histogram_macros.h"
#include "base/strings/string_util.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/dbus/session_manager_client.h"
namespace {
const int kRequestProcessListPeriodInMinutes = 5;
const char kArcProcessNamePrefix[] = "org.chromium.arc.";
const char kGmsProcessNamePrefix[] = "com.google.android.gms";
const char kBootProgressEnableScreen[] = "boot_progress_enable_screen";
} // namespace
namespace arc {
ArcMetricsService::ArcMetricsService(ArcBridgeService* bridge_service)
: ArcService(bridge_service),
binding_(this),
process_observer_(this),
oom_kills_monitor_handle_(OomKillsMonitor::StartMonitoring()),
weak_ptr_factory_(this) {
arc_bridge_service()->metrics()->AddObserver(this);
arc_bridge_service()->process()->AddObserver(&process_observer_);
}
ArcMetricsService::~ArcMetricsService() {
DCHECK(CalledOnValidThread());
arc_bridge_service()->process()->RemoveObserver(&process_observer_);
arc_bridge_service()->metrics()->RemoveObserver(this);
}
bool ArcMetricsService::CalledOnValidThread() {
// Make sure access to the Chrome clipboard is happening in the UI thread.
return thread_checker_.CalledOnValidThread();
}
void ArcMetricsService::OnInstanceReady() {
VLOG(2) << "Start metrics service.";
// Retrieve ARC start time from session manager.
chromeos::SessionManagerClient* session_manager_client =
chromeos::DBusThreadManager::Get()->GetSessionManagerClient();
session_manager_client->GetArcStartTime(
base::Bind(&ArcMetricsService::OnArcStartTimeRetrieved,
weak_ptr_factory_.GetWeakPtr()));
}
void ArcMetricsService::OnInstanceClosed() {
VLOG(2) << "Close metrics service.";
DCHECK(CalledOnValidThread());
if (binding_.is_bound())
binding_.Unbind();
}
void ArcMetricsService::OnProcessInstanceReady() {
VLOG(2) << "Start updating process list.";
timer_.Start(FROM_HERE,
base::TimeDelta::FromMinutes(kRequestProcessListPeriodInMinutes),
this, &ArcMetricsService::RequestProcessList);
}
void ArcMetricsService::OnProcessInstanceClosed() {
VLOG(2) << "Stop updating process list.";
timer_.Stop();
}
void ArcMetricsService::RequestProcessList() {
mojom::ProcessInstance* process_instance =
arc_bridge_service()->process()->GetInstanceForMethod(
"RequestProcessList");
if (!process_instance)
return;
VLOG(2) << "RequestProcessList";
process_instance->RequestProcessList(base::Bind(
&ArcMetricsService::ParseProcessList, weak_ptr_factory_.GetWeakPtr()));
}
void ArcMetricsService::ParseProcessList(
mojo::Array<arc::mojom::RunningAppProcessInfoPtr> processes) {
int running_app_count = 0;
for (const auto& process : processes) {
const mojo::String& process_name = process->process_name;
const mojom::ProcessState& process_state = process->process_state;
// Processes like the ARC launcher and intent helper are always running
// and not counted as apps running by users. With the same reasoning,
// GMS (Google Play Services) and its related processes are skipped as
// well. The process_state check below filters out system processes,
// services, apps that are cached because they've run before.
if (base::StartsWith(process_name.get(), kArcProcessNamePrefix,
base::CompareCase::SENSITIVE) ||
base::StartsWith(process_name.get(), kGmsProcessNamePrefix,
base::CompareCase::SENSITIVE) ||
process_state != mojom::ProcessState::TOP) {
VLOG(2) << "Skipped " << process_name << " " << process_state;
} else {
++running_app_count;
}
}
UMA_HISTOGRAM_COUNTS_100("Arc.AppCount", running_app_count);
}
void ArcMetricsService::OnArcStartTimeRetrieved(
bool success,
base::TimeTicks arc_start_time) {
DCHECK(CalledOnValidThread());
if (!success) {
LOG(ERROR) << "Failed to retrieve ARC start timeticks.";
return;
}
auto* instance =
arc_bridge_service()->metrics()->GetInstanceForMethod("Init");
if (!instance)
return;
// The binding of host interface is deferred until the ARC start time is
// retrieved here because it prevents race condition of the ARC start
// time availability in ReportBootProgress().
if (!binding_.is_bound()) {
mojom::MetricsHostPtr host_ptr;
binding_.Bind(mojo::GetProxy(&host_ptr));
instance->Init(std::move(host_ptr));
}
arc_start_time_ = arc_start_time;
VLOG(2) << "ARC start @" << arc_start_time_;
}
void ArcMetricsService::ReportBootProgress(
mojo::Array<arc::mojom::BootProgressEventPtr> events) {
DCHECK(CalledOnValidThread());
int64_t arc_start_time_in_ms =
(arc_start_time_ - base::TimeTicks()).InMilliseconds();
for (const auto& event : events) {
VLOG(2) << "Report boot progress event:" << event->event << "@"
<< event->uptimeMillis;
std::string title = "Arc." + event->event.get();
base::TimeDelta elapsed_time = base::TimeDelta::FromMilliseconds(
event->uptimeMillis - arc_start_time_in_ms);
// Note: This leaks memory, which is expected behavior.
base::HistogramBase* histogram = base::Histogram::FactoryTimeGet(
title, base::TimeDelta::FromMilliseconds(1),
base::TimeDelta::FromSeconds(30), 50,
base::HistogramBase::kUmaTargetedHistogramFlag);
histogram->AddTime(elapsed_time);
if (event->event.get().compare(kBootProgressEnableScreen) == 0)
UMA_HISTOGRAM_CUSTOM_TIMES("Arc.AndroidBootTime", elapsed_time,
base::TimeDelta::FromMilliseconds(1),
base::TimeDelta::FromSeconds(30), 50);
}
}
ArcMetricsService::ProcessObserver::ProcessObserver(
ArcMetricsService* arc_metrics_service)
: arc_metrics_service_(arc_metrics_service) {}
ArcMetricsService::ProcessObserver::~ProcessObserver() = default;
void ArcMetricsService::ProcessObserver::OnInstanceReady() {
arc_metrics_service_->OnProcessInstanceReady();
}
void ArcMetricsService::ProcessObserver::OnInstanceClosed() {
arc_metrics_service_->OnProcessInstanceClosed();
}
} // namespace arc
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