chromeos/dbus/power_manager_client.cc

   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.
   4
   5 #include "chromeos/dbus/power_manager_client.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/bind.h"
  10 #include "base/command_line.h"
  11 #include "base/format_macros.h"
  12 #include "base/logging.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/message_loop/message_loop.h"
  15 #include "base/observer_list.h"
  16 #include "base/power_monitor/power_monitor_device_source.h"
  17 #include "base/strings/string_number_conversions.h"
  18 #include "base/strings/string_split.h"
  19 #include "base/strings/stringprintf.h"
  20 #include "base/threading/platform_thread.h"
  21 #include "base/timer/timer.h"
  22 #include "chromeos/chromeos_switches.h"
  23 #include "chromeos/dbus/fake_power_manager_client.h"
  24 #include "chromeos/dbus/power_manager/input_event.pb.h"
  25 #include "chromeos/dbus/power_manager/peripheral_battery_status.pb.h"
  26 #include "chromeos/dbus/power_manager/policy.pb.h"
  27 #include "chromeos/dbus/power_manager/power_supply_properties.pb.h"
  28 #include "chromeos/dbus/power_manager/suspend.pb.h"
  29 #include "components/device_event_log/device_event_log.h"
  30 #include "dbus/bus.h"
  31 #include "dbus/message.h"
  32 #include "dbus/object_path.h"
  33 #include "dbus/object_proxy.h"
  34
  35 namespace chromeos {
  36
  37 // Maximum amount of time that the power manager will wait for Chrome to
  38 // say that it's ready for the system to be suspended, in milliseconds.
  39 const int kSuspendDelayTimeoutMs = 5000;
  40
  41 // Human-readable description of Chrome's suspend delay.
  42 const char kSuspendDelayDescription[] = "chrome";
  43
  44 // The PowerManagerClient implementation used in production.
  45 class PowerManagerClientImpl : public PowerManagerClient {
  46  public:
  47   PowerManagerClientImpl()
  48       : origin_thread_id_(base::PlatformThread::CurrentId()),
  49         power_manager_proxy_(NULL),
  50         suspend_delay_id_(-1),
  51         has_suspend_delay_id_(false),
  52         dark_suspend_delay_id_(-1),
  53         has_dark_suspend_delay_id_(false),
  54         pending_suspend_id_(-1),
  55         suspend_is_pending_(false),
  56         suspending_from_dark_resume_(false),
  57         num_pending_suspend_readiness_callbacks_(0),
  58         last_is_projecting_(false),
  59         weak_ptr_factory_(this) {}
  60
  61   ~PowerManagerClientImpl() override {
  62     // Here we should unregister suspend notifications from powerd,
  63     // however:
  64     // - The lifetime of the PowerManagerClientImpl can extend past that of
  65     //   the objectproxy,
  66     // - power_manager can already detect that the client is gone and
  67     //   unregister our suspend delay.
  68   }
  69
  70   // PowerManagerClient overrides:
  71
  72   void AddObserver(Observer* observer) override {
  73     CHECK(observer);  // http://crbug.com/119976
  74     observers_.AddObserver(observer);
  75   }
  76
  77   void RemoveObserver(Observer* observer) override {
  78     observers_.RemoveObserver(observer);
  79   }
  80
  81   bool HasObserver(const Observer* observer) const override {
  82     return observers_.HasObserver(observer);
  83   }
  84
  85   void SetRenderProcessManagerDelegate(
  86       base::WeakPtr<RenderProcessManagerDelegate> delegate) override {
  87     DCHECK(!render_process_manager_delegate_)
  88         << "There can be only one! ...RenderProcessManagerDelegate";
  89     render_process_manager_delegate_ = delegate;
  90   }
  91
  92   void DecreaseScreenBrightness(bool allow_off) override {
  93     dbus::MethodCall method_call(
  94         power_manager::kPowerManagerInterface,
  95         power_manager::kDecreaseScreenBrightnessMethod);
  96     dbus::MessageWriter writer(&method_call);
  97     writer.AppendBool(allow_off);
  98     power_manager_proxy_->CallMethod(
  99         &method_call,
 100         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 101         dbus::ObjectProxy::EmptyResponseCallback());
 102   }
 103
 104   void IncreaseScreenBrightness() override {
 105     SimpleMethodCallToPowerManager(
 106         power_manager::kIncreaseScreenBrightnessMethod);
 107   }
 108
 109   void DecreaseKeyboardBrightness() override {
 110     SimpleMethodCallToPowerManager(
 111         power_manager::kDecreaseKeyboardBrightnessMethod);
 112   }
 113
 114   void IncreaseKeyboardBrightness() override {
 115     SimpleMethodCallToPowerManager(
 116         power_manager::kIncreaseKeyboardBrightnessMethod);
 117   }
 118
 119   void SetScreenBrightnessPercent(double percent, bool gradual) override {
 120     dbus::MethodCall method_call(
 121         power_manager::kPowerManagerInterface,
 122         power_manager::kSetScreenBrightnessPercentMethod);
 123     dbus::MessageWriter writer(&method_call);
 124     writer.AppendDouble(percent);
 125     writer.AppendInt32(
 126         gradual ?
 127         power_manager::kBrightnessTransitionGradual :
 128         power_manager::kBrightnessTransitionInstant);
 129     power_manager_proxy_->CallMethod(
 130         &method_call,
 131         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 132         dbus::ObjectProxy::EmptyResponseCallback());
 133   }
 134
 135   void GetScreenBrightnessPercent(
 136       const GetScreenBrightnessPercentCallback& callback) override {
 137     dbus::MethodCall method_call(
 138         power_manager::kPowerManagerInterface,
 139         power_manager::kGetScreenBrightnessPercentMethod);
 140     power_manager_proxy_->CallMethod(
 141         &method_call,
 142         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 143         base::Bind(&PowerManagerClientImpl::OnGetScreenBrightnessPercent,
 144                    weak_ptr_factory_.GetWeakPtr(), callback));
 145   }
 146
 147   void RequestStatusUpdate() override {
 148     POWER_LOG(USER) << "RequestStatusUpdate";
 149     dbus::MethodCall method_call(
 150         power_manager::kPowerManagerInterface,
 151         power_manager::kGetPowerSupplyPropertiesMethod);
 152     power_manager_proxy_->CallMethod(
 153         &method_call,
 154         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 155         base::Bind(&PowerManagerClientImpl::OnGetPowerSupplyPropertiesMethod,
 156                    weak_ptr_factory_.GetWeakPtr()));
 157   }
 158
 159   void RequestSuspend() override {
 160     POWER_LOG(USER) << "RequestSuspend";
 161     SimpleMethodCallToPowerManager(power_manager::kRequestSuspendMethod);
 162   }
 163
 164   void RequestRestart() override {
 165     POWER_LOG(USER) << "RequestRestart";
 166     SimpleMethodCallToPowerManager(power_manager::kRequestRestartMethod);
 167   }
 168
 169   void RequestShutdown() override {
 170     POWER_LOG(USER) << "RequestShutdown";
 171     SimpleMethodCallToPowerManager(power_manager::kRequestShutdownMethod);
 172   }
 173
 174   void NotifyUserActivity(power_manager::UserActivityType type) override {
 175     dbus::MethodCall method_call(
 176         power_manager::kPowerManagerInterface,
 177         power_manager::kHandleUserActivityMethod);
 178     dbus::MessageWriter writer(&method_call);
 179     writer.AppendInt32(type);
 180
 181     power_manager_proxy_->CallMethod(
 182         &method_call,
 183         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 184         dbus::ObjectProxy::EmptyResponseCallback());
 185   }
 186
 187   void NotifyVideoActivity(bool is_fullscreen) override {
 188     dbus::MethodCall method_call(
 189         power_manager::kPowerManagerInterface,
 190         power_manager::kHandleVideoActivityMethod);
 191     dbus::MessageWriter writer(&method_call);
 192     writer.AppendBool(is_fullscreen);
 193
 194     power_manager_proxy_->CallMethod(
 195         &method_call,
 196         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 197         dbus::ObjectProxy::EmptyResponseCallback());
 198   }
 199
 200   void SetPolicy(const power_manager::PowerManagementPolicy& policy) override {
 201     POWER_LOG(USER) << "SetPolicy";
 202     dbus::MethodCall method_call(
 203         power_manager::kPowerManagerInterface,
 204         power_manager::kSetPolicyMethod);
 205     dbus::MessageWriter writer(&method_call);
 206     if (!writer.AppendProtoAsArrayOfBytes(policy)) {
 207       POWER_LOG(ERROR) << "Error calling " << power_manager::kSetPolicyMethod;
 208       return;
 209     }
 210     power_manager_proxy_->CallMethod(
 211         &method_call,
 212         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 213         dbus::ObjectProxy::EmptyResponseCallback());
 214   }
 215
 216   void SetIsProjecting(bool is_projecting) override {
 217     POWER_LOG(USER) << "SetIsProjecting";
 218     dbus::MethodCall method_call(
 219         power_manager::kPowerManagerInterface,
 220         power_manager::kSetIsProjectingMethod);
 221     dbus::MessageWriter writer(&method_call);
 222     writer.AppendBool(is_projecting);
 223     power_manager_proxy_->CallMethod(
 224         &method_call,
 225         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 226         dbus::ObjectProxy::EmptyResponseCallback());
 227     last_is_projecting_ = is_projecting;
 228   }
 229
 230   base::Closure GetSuspendReadinessCallback() override {
 231     DCHECK(OnOriginThread());
 232     DCHECK(suspend_is_pending_);
 233     num_pending_suspend_readiness_callbacks_++;
 234     return base::Bind(&PowerManagerClientImpl::HandleObserverSuspendReadiness,
 235                       weak_ptr_factory_.GetWeakPtr(), pending_suspend_id_,
 236                       suspending_from_dark_resume_);
 237   }
 238
 239   int GetNumPendingSuspendReadinessCallbacks() override {
 240     return num_pending_suspend_readiness_callbacks_;
 241   }
 242
 243  protected:
 244   void Init(dbus::Bus* bus) override {
 245     power_manager_proxy_ = bus->GetObjectProxy(
 246         power_manager::kPowerManagerServiceName,
 247         dbus::ObjectPath(power_manager::kPowerManagerServicePath));
 248
 249     power_manager_proxy_->SetNameOwnerChangedCallback(
 250         base::Bind(&PowerManagerClientImpl::NameOwnerChangedReceived,
 251                    weak_ptr_factory_.GetWeakPtr()));
 252
 253     // Monitor the D-Bus signal for brightness changes. Only the power
 254     // manager knows the actual brightness level. We don't cache the
 255     // brightness level in Chrome as it'll make things less reliable.
 256     power_manager_proxy_->ConnectToSignal(
 257         power_manager::kPowerManagerInterface,
 258         power_manager::kBrightnessChangedSignal,
 259         base::Bind(&PowerManagerClientImpl::BrightnessChangedReceived,
 260                    weak_ptr_factory_.GetWeakPtr()),
 261         base::Bind(&PowerManagerClientImpl::SignalConnected,
 262                    weak_ptr_factory_.GetWeakPtr()));
 263
 264     power_manager_proxy_->ConnectToSignal(
 265         power_manager::kPowerManagerInterface,
 266         power_manager::kPeripheralBatteryStatusSignal,
 267         base::Bind(&PowerManagerClientImpl::PeripheralBatteryStatusReceived,
 268                    weak_ptr_factory_.GetWeakPtr()),
 269         base::Bind(&PowerManagerClientImpl::SignalConnected,
 270                    weak_ptr_factory_.GetWeakPtr()));
 271
 272     power_manager_proxy_->ConnectToSignal(
 273         power_manager::kPowerManagerInterface,
 274         power_manager::kPowerSupplyPollSignal,
 275         base::Bind(&PowerManagerClientImpl::PowerSupplyPollReceived,
 276                    weak_ptr_factory_.GetWeakPtr()),
 277         base::Bind(&PowerManagerClientImpl::SignalConnected,
 278                    weak_ptr_factory_.GetWeakPtr()));
 279
 280     power_manager_proxy_->ConnectToSignal(
 281         power_manager::kPowerManagerInterface,
 282         power_manager::kInputEventSignal,
 283         base::Bind(&PowerManagerClientImpl::InputEventReceived,
 284                    weak_ptr_factory_.GetWeakPtr()),
 285         base::Bind(&PowerManagerClientImpl::SignalConnected,
 286                    weak_ptr_factory_.GetWeakPtr()));
 287
 288     power_manager_proxy_->ConnectToSignal(
 289         power_manager::kPowerManagerInterface,
 290         power_manager::kSuspendImminentSignal,
 291         base::Bind(
 292             &PowerManagerClientImpl::HandleSuspendImminent,
 293             weak_ptr_factory_.GetWeakPtr(), false),
 294         base::Bind(&PowerManagerClientImpl::SignalConnected,
 295                    weak_ptr_factory_.GetWeakPtr()));
 296
 297     power_manager_proxy_->ConnectToSignal(
 298         power_manager::kPowerManagerInterface,
 299         power_manager::kSuspendDoneSignal,
 300         base::Bind(&PowerManagerClientImpl::SuspendDoneReceived,
 301                    weak_ptr_factory_.GetWeakPtr()),
 302         base::Bind(&PowerManagerClientImpl::SignalConnected,
 303                    weak_ptr_factory_.GetWeakPtr()));
 304
 305     power_manager_proxy_->ConnectToSignal(
 306         power_manager::kPowerManagerInterface,
 307         power_manager::kDarkSuspendImminentSignal,
 308         base::Bind(
 309             &PowerManagerClientImpl::HandleSuspendImminent,
 310             weak_ptr_factory_.GetWeakPtr(), true),
 311         base::Bind(&PowerManagerClientImpl::SignalConnected,
 312                    weak_ptr_factory_.GetWeakPtr()));
 313
 314     power_manager_proxy_->ConnectToSignal(
 315         power_manager::kPowerManagerInterface,
 316         power_manager::kIdleActionImminentSignal,
 317         base::Bind(
 318             &PowerManagerClientImpl::IdleActionImminentReceived,
 319             weak_ptr_factory_.GetWeakPtr()),
 320         base::Bind(&PowerManagerClientImpl::SignalConnected,
 321                    weak_ptr_factory_.GetWeakPtr()));
 322
 323     power_manager_proxy_->ConnectToSignal(
 324         power_manager::kPowerManagerInterface,
 325         power_manager::kIdleActionDeferredSignal,
 326         base::Bind(
 327             &PowerManagerClientImpl::IdleActionDeferredReceived,
 328             weak_ptr_factory_.GetWeakPtr()),
 329         base::Bind(&PowerManagerClientImpl::SignalConnected,
 330                    weak_ptr_factory_.GetWeakPtr()));
 331
 332     RegisterSuspendDelays();
 333   }
 334
 335  private:
 336   // Returns true if the current thread is the origin thread.
 337   bool OnOriginThread() {
 338     return base::PlatformThread::CurrentId() == origin_thread_id_;
 339   }
 340
 341   // Called when a dbus signal is initially connected.
 342   void SignalConnected(const std::string& interface_name,
 343                        const std::string& signal_name,
 344                        bool success) {
 345     if (!success)
 346       POWER_LOG(ERROR) << "Failed to connect to signal " << signal_name << ".";
 347   }
 348
 349   // Makes a method call to power manager with no arguments and no response.
 350   void SimpleMethodCallToPowerManager(const std::string& method_name) {
 351     dbus::MethodCall method_call(power_manager::kPowerManagerInterface,
 352                                  method_name);
 353     power_manager_proxy_->CallMethod(
 354         &method_call,
 355         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 356         dbus::ObjectProxy::EmptyResponseCallback());
 357   }
 358
 359   void NameOwnerChangedReceived(const std::string& old_owner,
 360                                 const std::string& new_owner) {
 361     POWER_LOG(EVENT) << "Power manager restarted. Old owner: "
 362                      << (old_owner.empty() ? "[none]" : old_owner.c_str())
 363                      << " New owner: "
 364                      << (new_owner.empty() ? "[none]" : new_owner.c_str());
 365     suspend_is_pending_ = false;
 366     pending_suspend_id_ = -1;
 367     suspending_from_dark_resume_ = false;
 368     if (!new_owner.empty()) {
 369       POWER_LOG(EVENT) << "Sending initial state to power manager";
 370       RegisterSuspendDelays();
 371       SetIsProjecting(last_is_projecting_);
 372       FOR_EACH_OBSERVER(Observer, observers_, PowerManagerRestarted());
 373     }
 374   }
 375
 376   void BrightnessChangedReceived(dbus::Signal* signal) {
 377     dbus::MessageReader reader(signal);
 378     int32_t brightness_level = 0;
 379     bool user_initiated = 0;
 380     if (!(reader.PopInt32(&brightness_level) &&
 381           reader.PopBool(&user_initiated))) {
 382       POWER_LOG(ERROR) << "Brightness changed signal had incorrect parameters: "
 383                        << signal->ToString();
 384       return;
 385     }
 386     POWER_LOG(DEBUG) << "Brightness changed to " << brightness_level
 387                      << ": user initiated " << user_initiated;
 388     FOR_EACH_OBSERVER(Observer, observers_,
 389                       BrightnessChanged(brightness_level, user_initiated));
 390   }
 391
 392   void PeripheralBatteryStatusReceived(dbus::Signal* signal) {
 393     dbus::MessageReader reader(signal);
 394     power_manager::PeripheralBatteryStatus protobuf_status;
 395     if (!reader.PopArrayOfBytesAsProto(&protobuf_status)) {
 396       POWER_LOG(ERROR) << "Unable to decode protocol buffer from "
 397                        << power_manager::kPeripheralBatteryStatusSignal
 398                        << " signal";
 399       return;
 400     }
 401
 402     std::string path = protobuf_status.path();
 403     std::string name = protobuf_status.name();
 404     int level = protobuf_status.has_level() ? protobuf_status.level() : -1;
 405
 406     POWER_LOG(DEBUG) << "Device battery status received " << level << " for "
 407                      << name << " at " << path;
 408
 409     FOR_EACH_OBSERVER(Observer, observers_,
 410                       PeripheralBatteryStatusReceived(path, name, level));
 411   }
 412
 413   void PowerSupplyPollReceived(dbus::Signal* signal) {
 414     POWER_LOG(DEBUG) << "Received power supply poll signal.";
 415     dbus::MessageReader reader(signal);
 416     power_manager::PowerSupplyProperties protobuf;
 417     if (reader.PopArrayOfBytesAsProto(&protobuf)) {
 418       HandlePowerSupplyProperties(protobuf);
 419     } else {
 420       POWER_LOG(ERROR) << "Unable to decode "
 421                        << power_manager::kPowerSupplyPollSignal << " signal";
 422     }
 423   }
 424
 425   void OnGetPowerSupplyPropertiesMethod(dbus::Response* response) {
 426     if (!response) {
 427       POWER_LOG(ERROR) << "Error calling "
 428                        << power_manager::kGetPowerSupplyPropertiesMethod;
 429       return;
 430     }
 431
 432     dbus::MessageReader reader(response);
 433     power_manager::PowerSupplyProperties protobuf;
 434     if (reader.PopArrayOfBytesAsProto(&protobuf)) {
 435       HandlePowerSupplyProperties(protobuf);
 436     } else {
 437       POWER_LOG(ERROR) << "Unable to decode "
 438                        << power_manager::kGetPowerSupplyPropertiesMethod
 439                        << " response";
 440     }
 441   }
 442
 443   void OnGetScreenBrightnessPercent(
 444       const GetScreenBrightnessPercentCallback& callback,
 445       dbus::Response* response) {
 446     if (!response) {
 447       POWER_LOG(ERROR) << "Error calling "
 448                        << power_manager::kGetScreenBrightnessPercentMethod;
 449       return;
 450     }
 451     dbus::MessageReader reader(response);
 452     double percent = 0.0;
 453     if (!reader.PopDouble(&percent))
 454       POWER_LOG(ERROR) << "Error reading response from powerd: "
 455                        << response->ToString();
 456     callback.Run(percent);
 457   }
 458
 459   void HandlePowerSupplyProperties(
 460       const power_manager::PowerSupplyProperties& proto) {
 461     FOR_EACH_OBSERVER(Observer, observers_, PowerChanged(proto));
 462     const bool on_battery = proto.external_power() ==
 463         power_manager::PowerSupplyProperties_ExternalPower_DISCONNECTED;
 464     base::PowerMonitorDeviceSource::SetPowerSource(on_battery);
 465   }
 466
 467   void HandleRegisterSuspendDelayReply(bool dark_suspend,
 468                                        const std::string& method_name,
 469                                        dbus::Response* response) {
 470     if (!response) {
 471       POWER_LOG(ERROR) << "Error calling " << method_name;
 472       return;
 473     }
 474
 475     dbus::MessageReader reader(response);
 476     power_manager::RegisterSuspendDelayReply protobuf;
 477     if (!reader.PopArrayOfBytesAsProto(&protobuf)) {
 478       POWER_LOG(ERROR) << "Unable to parse reply from " << method_name;
 479       return;
 480     }
 481
 482     if (dark_suspend) {
 483       dark_suspend_delay_id_ = protobuf.delay_id();
 484       has_dark_suspend_delay_id_ = true;
 485       POWER_LOG(EVENT) << "Registered dark suspend delay "
 486                        << dark_suspend_delay_id_;
 487     } else {
 488       suspend_delay_id_ = protobuf.delay_id();
 489       has_suspend_delay_id_ = true;
 490       POWER_LOG(EVENT) << "Registered suspend delay " << suspend_delay_id_;
 491     }
 492   }
 493
 494   void HandleSuspendImminent(bool in_dark_resume, dbus::Signal* signal) {
 495     std::string signal_name = signal->GetMember();
 496     if ((in_dark_resume && !has_dark_suspend_delay_id_) ||
 497         (!in_dark_resume && !has_suspend_delay_id_)) {
 498       POWER_LOG(ERROR) << "Received unrequested " << signal_name << " signal";
 499       return;
 500     }
 501
 502     dbus::MessageReader reader(signal);
 503     power_manager::SuspendImminent proto;
 504     if (!reader.PopArrayOfBytesAsProto(&proto)) {
 505       POWER_LOG(ERROR) << "Unable to decode protocol buffer from "
 506                        << signal_name << " signal";
 507       return;
 508     }
 509
 510     POWER_LOG(EVENT) << "Got " << signal_name
 511                      << " signal announcing suspend attempt "
 512                      << proto.suspend_id();
 513
 514     // If a previous suspend is pending from the same state we are currently in
 515     // (fully powered on or in dark resume), then something's gone a little
 516     // wonky.
 517     if (suspend_is_pending_ && suspending_from_dark_resume_ == in_dark_resume) {
 518       POWER_LOG(ERROR) << "Got " << signal_name
 519                        << " signal about pending suspend attempt "
 520                        << proto.suspend_id()
 521                        << " while still waiting on attempt "
 522                        << pending_suspend_id_;
 523     }
 524
 525     pending_suspend_id_ = proto.suspend_id();
 526     suspend_is_pending_ = true;
 527     suspending_from_dark_resume_ = in_dark_resume;
 528     num_pending_suspend_readiness_callbacks_ = 0;
 529     if (suspending_from_dark_resume_)
 530       FOR_EACH_OBSERVER(Observer, observers_, DarkSuspendImminent());
 531     else
 532       FOR_EACH_OBSERVER(Observer, observers_, SuspendImminent());
 533     base::PowerMonitorDeviceSource::HandleSystemSuspending();
 534     MaybeReportSuspendReadiness();
 535   }
 536
 537   void SuspendDoneReceived(dbus::Signal* signal) {
 538     dbus::MessageReader reader(signal);
 539     power_manager::SuspendDone proto;
 540     if (!reader.PopArrayOfBytesAsProto(&proto)) {
 541       POWER_LOG(ERROR) << "Unable to decode protocol buffer from "
 542                        << power_manager::kSuspendDoneSignal << " signal";
 543       return;
 544     }
 545
 546     const base::TimeDelta duration =
 547         base::TimeDelta::FromInternalValue(proto.suspend_duration());
 548     POWER_LOG(EVENT) << "Got " << power_manager::kSuspendDoneSignal
 549                      << " signal:"
 550                      << " suspend_id=" << proto.suspend_id()
 551                      << " duration=" << duration.InSeconds() << " sec";
 552
 553     if (render_process_manager_delegate_)
 554       render_process_manager_delegate_->SuspendDone();
 555
 556     FOR_EACH_OBSERVER(
 557         PowerManagerClient::Observer, observers_, SuspendDone(duration));
 558     base::PowerMonitorDeviceSource::HandleSystemResumed();
 559   }
 560
 561   void IdleActionImminentReceived(dbus::Signal* signal) {
 562     dbus::MessageReader reader(signal);
 563     power_manager::IdleActionImminent proto;
 564     if (!reader.PopArrayOfBytesAsProto(&proto)) {
 565       POWER_LOG(ERROR) << "Unable to decode protocol buffer from "
 566                        << power_manager::kIdleActionImminentSignal << " signal";
 567       return;
 568     }
 569     FOR_EACH_OBSERVER(Observer, observers_,
 570         IdleActionImminent(base::TimeDelta::FromInternalValue(
 571             proto.time_until_idle_action())));
 572   }
 573
 574   void IdleActionDeferredReceived(dbus::Signal* signal) {
 575     FOR_EACH_OBSERVER(Observer, observers_, IdleActionDeferred());
 576   }
 577
 578   void InputEventReceived(dbus::Signal* signal) {
 579     dbus::MessageReader reader(signal);
 580     power_manager::InputEvent proto;
 581     if (!reader.PopArrayOfBytesAsProto(&proto)) {
 582       POWER_LOG(ERROR) << "Unable to decode protocol buffer from "
 583                        << power_manager::kInputEventSignal << " signal";
 584       return;
 585     }
 586
 587     base::TimeTicks timestamp =
 588         base::TimeTicks::FromInternalValue(proto.timestamp());
 589     POWER_LOG(USER) << "Got " << power_manager::kInputEventSignal << " signal:"
 590                     << " type=" << proto.type()
 591                     << " timestamp=" << proto.timestamp();
 592     switch (proto.type()) {
 593       case power_manager::InputEvent_Type_POWER_BUTTON_DOWN:
 594       case power_manager::InputEvent_Type_POWER_BUTTON_UP: {
 595         const bool down =
 596             (proto.type() == power_manager::InputEvent_Type_POWER_BUTTON_DOWN);
 597         FOR_EACH_OBSERVER(PowerManagerClient::Observer, observers_,
 598                           PowerButtonEventReceived(down, timestamp));
 599
 600         // Tell powerd that Chrome has handled power button presses.
 601         if (down) {
 602           dbus::MethodCall method_call(
 603               power_manager::kPowerManagerInterface,
 604               power_manager::kHandlePowerButtonAcknowledgmentMethod);
 605           dbus::MessageWriter writer(&method_call);
 606           writer.AppendInt64(proto.timestamp());
 607           power_manager_proxy_->CallMethod(
 608               &method_call,
 609               dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 610               dbus::ObjectProxy::EmptyResponseCallback());
 611         }
 612         break;
 613       }
 614       case power_manager::InputEvent_Type_LID_OPEN:
 615       case power_manager::InputEvent_Type_LID_CLOSED: {
 616         bool open =
 617             (proto.type() == power_manager::InputEvent_Type_LID_OPEN);
 618         FOR_EACH_OBSERVER(PowerManagerClient::Observer, observers_,
 619                           LidEventReceived(open, timestamp));
 620         break;
 621       }
 622     }
 623   }
 624
 625   void RegisterSuspendDelayImpl(
 626       const std::string& method_name,
 627       const power_manager::RegisterSuspendDelayRequest& protobuf_request,
 628       dbus::ObjectProxy::ResponseCallback callback) {
 629     dbus::MethodCall method_call(
 630         power_manager::kPowerManagerInterface, method_name);
 631     dbus::MessageWriter writer(&method_call);
 632
 633     if (!writer.AppendProtoAsArrayOfBytes(protobuf_request)) {
 634       POWER_LOG(ERROR) << "Error constructing message for " << method_name;
 635       return;
 636     }
 637
 638     power_manager_proxy_->CallMethod(
 639         &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT, callback);
 640   }
 641
 642   // Registers suspend delays with the power manager.  This is usually only
 643   // called at startup, but if the power manager restarts, we need to create new
 644   // delays.
 645   void RegisterSuspendDelays() {
 646     // Throw out any old delay that was registered.
 647     suspend_delay_id_ = -1;
 648     has_suspend_delay_id_ = false;
 649     dark_suspend_delay_id_ = -1;
 650     has_dark_suspend_delay_id_ = false;
 651
 652     power_manager::RegisterSuspendDelayRequest protobuf_request;
 653     base::TimeDelta timeout =
 654         base::TimeDelta::FromMilliseconds(kSuspendDelayTimeoutMs);
 655     protobuf_request.set_timeout(timeout.ToInternalValue());
 656     protobuf_request.set_description(kSuspendDelayDescription);
 657
 658     RegisterSuspendDelayImpl(
 659         power_manager::kRegisterSuspendDelayMethod,
 660         protobuf_request,
 661         base::Bind(&PowerManagerClientImpl::HandleRegisterSuspendDelayReply,
 662                    weak_ptr_factory_.GetWeakPtr(), false,
 663                    power_manager::kRegisterSuspendDelayMethod));
 664     RegisterSuspendDelayImpl(
 665         power_manager::kRegisterDarkSuspendDelayMethod,
 666         protobuf_request,
 667         base::Bind(&PowerManagerClientImpl::HandleRegisterSuspendDelayReply,
 668                    weak_ptr_factory_.GetWeakPtr(), true,
 669                    power_manager::kRegisterDarkSuspendDelayMethod));
 670   }
 671
 672   // Records the fact that an observer has finished doing asynchronous work
 673   // that was blocking a pending suspend attempt and possibly reports
 674   // suspend readiness to powerd.  Called by callbacks returned via
 675   // GetSuspendReadinessCallback().
 676   void HandleObserverSuspendReadiness(int32_t suspend_id, bool in_dark_resume) {
 677     DCHECK(OnOriginThread());
 678     if (!suspend_is_pending_ || suspend_id != pending_suspend_id_ ||
 679         in_dark_resume != suspending_from_dark_resume_)
 680       return;
 681
 682     num_pending_suspend_readiness_callbacks_--;
 683     MaybeReportSuspendReadiness();
 684   }
 685
 686   // Reports suspend readiness to powerd if no observers are still holding
 687   // suspend readiness callbacks.
 688   void MaybeReportSuspendReadiness() {
 689     if (!suspend_is_pending_ || num_pending_suspend_readiness_callbacks_ > 0)
 690       return;
 691
 692     std::string method_name;
 693     int32_t delay_id = -1;
 694     if (suspending_from_dark_resume_) {
 695       method_name = power_manager::kHandleDarkSuspendReadinessMethod;
 696       delay_id = dark_suspend_delay_id_;
 697     } else {
 698       method_name = power_manager::kHandleSuspendReadinessMethod;
 699       delay_id = suspend_delay_id_;
 700     }
 701
 702     if (render_process_manager_delegate_ && !suspending_from_dark_resume_)
 703       render_process_manager_delegate_->SuspendImminent();
 704
 705     dbus::MethodCall method_call(
 706         power_manager::kPowerManagerInterface, method_name);
 707     dbus::MessageWriter writer(&method_call);
 708
 709     POWER_LOG(EVENT) << "Announcing readiness of suspend delay " << delay_id
 710                      << " for suspend attempt " << pending_suspend_id_;
 711     power_manager::SuspendReadinessInfo protobuf_request;
 712     protobuf_request.set_delay_id(delay_id);
 713     protobuf_request.set_suspend_id(pending_suspend_id_);
 714
 715     pending_suspend_id_ = -1;
 716     suspend_is_pending_ = false;
 717
 718     if (!writer.AppendProtoAsArrayOfBytes(protobuf_request)) {
 719       POWER_LOG(ERROR) << "Error constructing message for " << method_name;
 720       return;
 721     }
 722     power_manager_proxy_->CallMethod(
 723         &method_call,
 724         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
 725         dbus::ObjectProxy::EmptyResponseCallback());
 726   }
 727
 728   // Origin thread (i.e. the UI thread in production).
 729   base::PlatformThreadId origin_thread_id_;
 730
 731   dbus::ObjectProxy* power_manager_proxy_;
 732   base::ObserverList<Observer> observers_;
 733
 734   // The delay_id_ obtained from the RegisterSuspendDelay request.
 735   int32_t suspend_delay_id_;
 736   bool has_suspend_delay_id_;
 737
 738   // The delay_id_ obtained from the RegisterDarkSuspendDelay request.
 739   int32_t dark_suspend_delay_id_;
 740   bool has_dark_suspend_delay_id_;
 741
 742   // powerd-supplied ID corresponding to an imminent suspend attempt that is
 743   // currently being delayed.
 744   int32_t pending_suspend_id_;
 745   bool suspend_is_pending_;
 746
 747   // Set to true when the suspend currently being delayed was triggered during a
 748   // dark resume.  Since |pending_suspend_id_| and |suspend_is_pending_| are
 749   // both shared by normal and dark suspends, |suspending_from_dark_resume_|
 750   // helps distinguish the context within which these variables are being used.
 751   bool suspending_from_dark_resume_;
 752
 753   // Number of callbacks that have been returned by
 754   // GetSuspendReadinessCallback() during the currently-pending suspend
 755   // attempt but have not yet been called.
 756   int num_pending_suspend_readiness_callbacks_;
 757
 758   // Last state passed to SetIsProjecting().
 759   bool last_is_projecting_;
 760
 761   // The delegate used to manage the power consumption of Chrome's renderer
 762   // processes.
 763   base::WeakPtr<RenderProcessManagerDelegate> render_process_manager_delegate_;
 764
 765   // Note: This should remain the last member so it'll be destroyed and
 766   // invalidate its weak pointers before any other members are destroyed.
 767   base::WeakPtrFactory<PowerManagerClientImpl> weak_ptr_factory_;
 768
 769   DISALLOW_COPY_AND_ASSIGN(PowerManagerClientImpl);
 770 };
 771
 772 PowerManagerClient::PowerManagerClient() {
 773 }
 774
 775 PowerManagerClient::~PowerManagerClient() {
 776 }
 777
 778 // static
 779 PowerManagerClient* PowerManagerClient::Create(
 780     DBusClientImplementationType type) {
 781   if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
 782     return new PowerManagerClientImpl();
 783   DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
 784   return new FakePowerManagerClient();
 785 }
 786
 787 }  // namespace chromeos