1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
8 #include "base/bind_helpers.h"
9 #include "base/callback.h"
10 #include "base/command_line.h"
11 #include "base/compiler_specific.h"
12 #include "base/metrics/histogram.h"
13 #include "base/rand_util.h"
14 #include "base/strings/string_number_conversions.h"
15 #include "base/threading/sequenced_worker_pool.h"
16 #include "chrome/browser/metrics/perf_provider_chromeos.h"
17 #include "chrome/browser/profiles/profile.h"
18 #include "chrome/browser/ui/browser.h"
19 #include "chrome/browser/ui/browser_list.h"
20 #include "chrome/browser/ui/browser_list_observer.h"
21 #include "chrome/common/chrome_switches.h"
22 #include "chromeos/dbus/dbus_thread_manager.h"
23 #include "chromeos/dbus/debug_daemon_client.h"
27 // Default time in seconds between invocations of perf.
28 // This period is roughly 6.5 hours.
29 // This is chosen to be relatively prime with the number of seconds in:
33 const size_t kPerfCommandIntervalDefaultSeconds = 23093;
35 // The first collection interval is different from the interval above. This is
36 // because we want to collect the first profile quickly after Chrome is started.
37 // If this period is too long, the user will log off and Chrome will be killed
38 // before it is triggered. The following 2 variables determine the upper and
39 // lower bound on the interval.
40 // The reason we do not always want to collect the initial profile after a fixed
41 // period is to not over-represent task X in the profile where task X always
42 // runs at a fixed period after start-up. By selecting a period randomly between
43 // a lower and upper bound, we will hopefully collect a more fair profile.
44 const size_t kPerfCommandStartIntervalLowerBoundMinutes = 10;
46 const size_t kPerfCommandStartIntervalUpperBoundMinutes = 20;
48 // Default time in seconds perf is run for.
49 const size_t kPerfCommandDurationDefaultSeconds = 2;
51 // Enumeration representing success and various failure modes for collecting and
53 enum GetPerfDataOutcome {
63 // Name of the histogram that represents the success and various failure modes
64 // for collecting and sending perf data.
65 const char kGetPerfDataOutcomeHistogram[] = "UMA.Perf.GetData";
67 void AddToPerfHistogram(GetPerfDataOutcome outcome) {
68 UMA_HISTOGRAM_ENUMERATION(kGetPerfDataOutcomeHistogram,
78 // This class must be created and used on the UI thread. It watches for any
79 // incognito window being opened from the time it is instantiated to the time it
81 class WindowedIncognitoObserver : public chrome::BrowserListObserver {
83 WindowedIncognitoObserver() : incognito_launched_(false) {
84 BrowserList::AddObserver(this);
87 virtual ~WindowedIncognitoObserver() {
88 BrowserList::RemoveObserver(this);
91 // This method can be checked to see whether any incognito window has been
92 // opened since the time this object was created.
93 bool incognito_launched() {
94 return incognito_launched_;
98 // chrome::BrowserListObserver implementation.
99 virtual void OnBrowserAdded(Browser* browser) OVERRIDE {
100 if (browser->profile()->IsOffTheRecord())
101 incognito_launched_ = true;
104 bool incognito_launched_;
107 PerfProvider::PerfProvider()
108 : state_(READY_TO_COLLECT),
109 weak_factory_(this) {
110 size_t collection_interval_minutes = base::RandInt(
111 kPerfCommandStartIntervalLowerBoundMinutes,
112 kPerfCommandStartIntervalUpperBoundMinutes);
113 ScheduleCollection(base::TimeDelta::FromMinutes(collection_interval_minutes));
116 PerfProvider::~PerfProvider() {}
118 bool PerfProvider::GetPerfData(PerfDataProto* perf_data_proto) {
119 DCHECK(CalledOnValidThread());
120 if (state_ != READY_TO_UPLOAD) {
121 AddToPerfHistogram(NOT_READY_TO_UPLOAD);
125 *perf_data_proto = perf_data_proto_;
126 state_ = READY_TO_COLLECT;
128 AddToPerfHistogram(SUCCESS);
132 void PerfProvider::ScheduleCollection(const base::TimeDelta& interval) {
133 DCHECK(CalledOnValidThread());
134 if (timer_.IsRunning())
137 timer_.Start(FROM_HERE, interval, this,
138 &PerfProvider::CollectIfNecessaryAndReschedule);
141 void PerfProvider::CollectIfNecessary() {
142 DCHECK(CalledOnValidThread());
143 if (state_ != READY_TO_COLLECT) {
144 AddToPerfHistogram(NOT_READY_TO_COLLECT);
148 // For privacy reasons, Chrome should only collect perf data if there is no
149 // incognito session active (or gets spawned during the collection).
150 if (BrowserList::IsOffTheRecordSessionActive()) {
151 AddToPerfHistogram(INCOGNITO_ACTIVE);
155 scoped_ptr<WindowedIncognitoObserver> incognito_observer(
156 new WindowedIncognitoObserver);
158 chromeos::DebugDaemonClient* client =
159 chromeos::DBusThreadManager::Get()->GetDebugDaemonClient();
161 base::TimeDelta collection_duration = base::TimeDelta::FromSeconds(
162 kPerfCommandDurationDefaultSeconds);
164 client->GetPerfData(collection_duration.InSeconds(),
165 base::Bind(&PerfProvider::ParseProtoIfValid,
166 weak_factory_.GetWeakPtr(),
167 base::Passed(&incognito_observer)));
170 void PerfProvider::CollectIfNecessaryAndReschedule() {
171 CollectIfNecessary();
173 base::TimeDelta::FromSeconds(kPerfCommandIntervalDefaultSeconds));
176 void PerfProvider::ParseProtoIfValid(
177 scoped_ptr<WindowedIncognitoObserver> incognito_observer,
178 const std::vector<uint8>& data) {
179 DCHECK(CalledOnValidThread());
181 if (incognito_observer->incognito_launched()) {
182 AddToPerfHistogram(INCOGNITO_LAUNCHED);
186 if (!perf_data_proto_.ParseFromArray(data.data(), data.size())) {
187 AddToPerfHistogram(PROTOBUF_NOT_PARSED);
188 perf_data_proto_.Clear();
192 state_ = READY_TO_UPLOAD;
195 } // namespace metrics