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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/power_monitor/power_monitor.h" | 5 #include "base/power_monitor/power_monitor.h" |
6 #include "base/logging.h" | |
7 #include "base/power_monitor/power_monitor_source.h" | 6 #include "base/power_monitor/power_monitor_source.h" |
8 | 7 |
9 namespace base { | 8 namespace base { |
10 | 9 |
11 static PowerMonitor* g_power_monitor = NULL; | 10 static PowerMonitor* g_power_monitor = NULL; |
12 | 11 |
13 PowerMonitor::PowerMonitor(scoped_ptr<PowerMonitorSource> source) | 12 PowerMonitor::PowerMonitor(scoped_ptr<PowerMonitorSource> source) |
14 : observers_(new ObserverListThreadSafe<PowerObserver>()), | 13 : observers_(new ObserverListThreadSafe<PowerObserver>()), |
15 source_(source.Pass()) { | 14 source_(source.Pass()) { |
16 DCHECK(!g_power_monitor); | 15 DCHECK(!g_power_monitor); |
17 g_power_monitor = this; | 16 g_power_monitor = this; |
18 } | 17 } |
19 | 18 |
20 PowerMonitor::~PowerMonitor() { | 19 PowerMonitor::~PowerMonitor() { |
21 DCHECK_EQ(this, g_power_monitor); | 20 DCHECK_EQ(this, g_power_monitor); |
22 g_power_monitor = NULL; | 21 g_power_monitor = NULL; |
23 } | 22 } |
24 | 23 |
25 // static | 24 // static |
26 PowerMonitor* PowerMonitor::Get() { | 25 PowerMonitor* PowerMonitor::Get() { |
27 return g_power_monitor; | 26 return g_power_monitor; |
28 } | 27 } |
29 | 28 |
30 void PowerMonitor::AddObserver(PowerObserver* obs) { | 29 void PowerMonitor::AddObserver(PowerObserver* obs) { |
31 DCHECK(!obs->power_monitor_thread_checker_); | |
32 obs->power_monitor_thread_checker_.reset(new base::ThreadChecker()); | |
33 observers_->AddObserver(obs); | 30 observers_->AddObserver(obs); |
34 } | 31 } |
35 | 32 |
36 void PowerMonitor::RemoveObserver(PowerObserver* obs) { | 33 void PowerMonitor::RemoveObserver(PowerObserver* obs) { |
37 // PowerObservers must be removed on the same thread on which they were added. | |
38 DCHECK(obs->power_monitor_thread_checker_); | |
39 DCHECK(obs->power_monitor_thread_checker_->CalledOnValidThread()); | |
40 observers_->RemoveObserver(obs); | 34 observers_->RemoveObserver(obs); |
41 obs->power_monitor_thread_checker_.reset(); | |
42 } | 35 } |
43 | 36 |
44 PowerMonitorSource* PowerMonitor::Source() { | 37 PowerMonitorSource* PowerMonitor::Source() { |
45 return source_.get(); | 38 return source_.get(); |
46 } | 39 } |
47 | 40 |
48 bool PowerMonitor::IsOnBatteryPower() { | 41 bool PowerMonitor::IsOnBatteryPower() { |
49 return source_->IsOnBatteryPower(); | 42 return source_->IsOnBatteryPower(); |
50 } | 43 } |
51 | 44 |
52 void PowerMonitor::NotifyPowerStateChange(bool battery_in_use) { | 45 void PowerMonitor::NotifyPowerStateChange(bool battery_in_use) { |
53 DVLOG(1) << "PowerStateChange: " << (battery_in_use ? "On" : "Off") | 46 DVLOG(1) << "PowerStateChange: " << (battery_in_use ? "On" : "Off") |
54 << " battery"; | 47 << " battery"; |
55 observers_->Notify(&PowerObserver::OnPowerStateChange, battery_in_use); | 48 observers_->Notify(&PowerObserver::OnPowerStateChange, battery_in_use); |
56 } | 49 } |
57 | 50 |
58 void PowerMonitor::NotifySuspend() { | 51 void PowerMonitor::NotifySuspend() { |
59 DVLOG(1) << "Power Suspending"; | 52 DVLOG(1) << "Power Suspending"; |
60 observers_->Notify(&PowerObserver::OnSuspend); | 53 observers_->Notify(&PowerObserver::OnSuspend); |
61 } | 54 } |
62 | 55 |
63 void PowerMonitor::NotifyResume() { | 56 void PowerMonitor::NotifyResume() { |
64 DVLOG(1) << "Power Resuming"; | 57 DVLOG(1) << "Power Resuming"; |
65 observers_->Notify(&PowerObserver::OnResume); | 58 observers_->Notify(&PowerObserver::OnResume); |
66 } | 59 } |
67 | 60 |
68 } // namespace base | 61 } // namespace base |
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