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72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/power_monitor/power_monitor.h"
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#include <utility>
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#include "base/power_monitor/power_monitor_source.h"
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#include "base/trace_event/trace_event.h"
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namespace base {
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static PowerMonitor* g_power_monitor = nullptr;
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PowerMonitor::PowerMonitor(std::unique_ptr<PowerMonitorSource> source)
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: observers_(new ObserverListThreadSafe<PowerObserver>()),
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source_(std::move(source)) {
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DCHECK(!g_power_monitor);
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g_power_monitor = this;
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}
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PowerMonitor::~PowerMonitor() {
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source_->Shutdown();
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DCHECK_EQ(this, g_power_monitor);
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g_power_monitor = nullptr;
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}
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// static
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PowerMonitor* PowerMonitor::Get() {
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return g_power_monitor;
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}
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void PowerMonitor::AddObserver(PowerObserver* obs) {
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observers_->AddObserver(obs);
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}
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void PowerMonitor::RemoveObserver(PowerObserver* obs) {
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observers_->RemoveObserver(obs);
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}
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PowerMonitorSource* PowerMonitor::Source() {
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return source_.get();
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}
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bool PowerMonitor::IsOnBatteryPower() {
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return source_->IsOnBatteryPower();
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}
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void PowerMonitor::NotifyPowerStateChange(bool battery_in_use) {
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DVLOG(1) << "PowerStateChange: " << (battery_in_use ? "On" : "Off")
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<< " battery";
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observers_->Notify(FROM_HERE, &PowerObserver::OnPowerStateChange,
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battery_in_use);
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}
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void PowerMonitor::NotifySuspend() {
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TRACE_EVENT_INSTANT0("base", "PowerMonitor::NotifySuspend",
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TRACE_EVENT_SCOPE_GLOBAL);
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DVLOG(1) << "Power Suspending";
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observers_->Notify(FROM_HERE, &PowerObserver::OnSuspend);
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}
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void PowerMonitor::NotifyResume() {
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TRACE_EVENT_INSTANT0("base", "PowerMonitor::NotifyResume",
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TRACE_EVENT_SCOPE_GLOBAL);
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DVLOG(1) << "Power Resuming";
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observers_->Notify(FROM_HERE, &PowerObserver::OnResume);
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}
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} // namespace base
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