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Bug 1062076 - remove Chromium system monitor from IPC code. rs=bent

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This commit is contained in:
Josh Aas 2014-09-02 23:30:40 -05:00
parent 7dce463506
commit dfc298875b
6 changed files with 0 additions and 285 deletions
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3
ipc/chromium/moz.build
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@ -58,7 +58,6 @@ UNIFIED_SOURCES += [
'src/base/simple_thread.cc',
'src/base/string_piece.cc',
'src/base/string_util.cc',
'src/base/system_monitor.cc',
'src/base/thread.cc',
'src/base/thread_collision_warner.cc',
'src/base/time.cc',
@ -102,7 +101,6 @@ if os_win:
'src/base/shared_memory_win.cc',
'src/base/sys_info_win.cc',
'src/base/sys_string_conversions_win.cc',
'src/base/system_monitor_win.cc',
'src/base/thread_local_storage_win.cc',
'src/base/thread_local_win.cc',
'src/base/time_win.cc',
@ -159,7 +157,6 @@ if os_posix:
'src/base/shared_memory_posix.cc',
'src/base/string16.cc',
'src/base/sys_info_posix.cc',
'src/base/system_monitor_posix.cc',
'src/base/thread_local_posix.cc',
'src/base/thread_local_storage_posix.cc',
'src/base/waitable_event_posix.cc',

89
ipc/chromium/src/base/system_monitor.cc
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@ -1,89 +0,0 @@
// Copyright (c) 2008 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 "base/system_monitor.h"
#include "base/logging.h"
#include "base/message_loop.h"
namespace base {
#if defined(ENABLE_BATTERY_MONITORING)
// The amount of time (in ms) to wait before running the initial
// battery check.
static int kDelayedBatteryCheckMs = 10 * 1000;
#endif // defined(ENABLE_BATTERY_MONITORING)
SystemMonitor::SystemMonitor()
: battery_in_use_(false),
suspended_(false) {
observer_list_ = new ObserverListThreadSafe<PowerObserver>();
}
void SystemMonitor::ProcessPowerMessage(PowerEvent event_id) {
// Suppress duplicate notifications. Some platforms may
// send multiple notifications of the same event.
switch (event_id) {
case POWER_STATE_EVENT:
{
bool on_battery = IsBatteryPower();
if (on_battery != battery_in_use_) {
battery_in_use_ = on_battery;
NotifyPowerStateChange();
}
}
break;
case RESUME_EVENT:
if (suspended_) {
suspended_ = false;
NotifyResume();
}
break;
case SUSPEND_EVENT:
if (!suspended_) {
suspended_ = true;
NotifySuspend();
}
break;
}
}
void SystemMonitor::AddObserver(PowerObserver* obs) {
observer_list_->AddObserver(obs);
}
void SystemMonitor::RemoveObserver(PowerObserver* obs) {
observer_list_->RemoveObserver(obs);
}
void SystemMonitor::NotifyPowerStateChange() {
CHROMIUM_LOG(INFO) << "PowerStateChange: "
<< (BatteryPower() ? "On" : "Off") << " battery";
observer_list_->Notify(&PowerObserver::OnPowerStateChange, this);
}
void SystemMonitor::NotifySuspend() {
CHROMIUM_LOG(INFO) << "Power Suspending";
observer_list_->Notify(&PowerObserver::OnSuspend, this);
}
void SystemMonitor::NotifyResume() {
CHROMIUM_LOG(INFO) << "Power Resuming";
observer_list_->Notify(&PowerObserver::OnResume, this);
}
void SystemMonitor::Start() {
#if defined(ENABLE_BATTERY_MONITORING)
DCHECK(MessageLoop::current()); // Can't call start too early.
SystemMonitor* monitor = Get();
monitor->delayed_battery_check_.Start(
TimeDelta::FromMilliseconds(kDelayedBatteryCheckMs), monitor,
&SystemMonitor::BatteryCheck);
#endif // defined(ENABLE_BATTERY_MONITORING)
}
void SystemMonitor::BatteryCheck() {
ProcessPowerMessage(SystemMonitor::POWER_STATE_EVENT);
}
} // namespace base

129
ipc/chromium/src/base/system_monitor.h
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@ -1,129 +0,0 @@
// Copyright (c) 2008 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.
#ifndef BASE_SYSTEM_MONITOR_H_
#define BASE_SYSTEM_MONITOR_H_
#include "base/observer_list_threadsafe.h"
#include "base/singleton.h"
// Windows HiRes timers drain the battery faster so we need to know the battery
// status. This isn't true for other platforms.
#if defined(OS_WIN)
#define ENABLE_BATTERY_MONITORING 1
#else
#undef ENABLE_BATTERY_MONITORING
#endif // !OS_WIN
namespace base {
// Class for monitoring various system-related subsystems
// such as power management, network status, etc.
// TODO(mbelshe): Add support beyond just power management.
class SystemMonitor {
public:
// Access to the Singleton
static SystemMonitor* Get() {
// Uses the LeakySingletonTrait because cleanup is optional.
return
Singleton<SystemMonitor, LeakySingletonTraits<SystemMonitor> >::get();
}
// Start the System Monitor within a process. This method
// is provided so that the battery check can be deferred.
// The MessageLoop must be started before calling this
// method.
// This is a no-op on platforms for which ENABLE_BATTERY_MONITORING is
// disabled.
static void Start();
//
// Power-related APIs
//
// Is the computer currently on battery power.
// Can be called on any thread.
bool BatteryPower() {
// Using a lock here is not necessary for just a bool.
return battery_in_use_;
}
// Normalized list of power events.
enum PowerEvent {
POWER_STATE_EVENT, // The Power status of the system has changed.
SUSPEND_EVENT, // The system is being suspended.
RESUME_EVENT // The system is being resumed.
};
// Callbacks will be called on the thread which creates the SystemMonitor.
// During the callback, Add/RemoveObserver will block until the callbacks
// are finished. Observers should implement quick callback functions; if
// lengthy operations are needed, the observer should take care to invoke
// the operation on an appropriate thread.
class PowerObserver {
public:
// Notification of a change in power status of the computer, such
// as from switching between battery and A/C power.
virtual void OnPowerStateChange(SystemMonitor*) = 0;
// Notification that the system is suspending.
virtual void OnSuspend(SystemMonitor*) = 0;
// Notification that the system is resuming.
virtual void OnResume(SystemMonitor*) = 0;
};
// Add a new observer.
// Can be called from any thread.
// Must not be called from within a notification callback.
void AddObserver(PowerObserver* obs);
// Remove an existing observer.
// Can be called from any thread.
// Must not be called from within a notification callback.
void RemoveObserver(PowerObserver* obs);
#if defined(OS_WIN)
// Windows-specific handling of a WM_POWERBROADCAST message.
// Embedders of this API should hook their top-level window
// message loop and forward WM_POWERBROADCAST through this call.
void ProcessWmPowerBroadcastMessage(int event_id);
#endif
// Cross-platform handling of a power event.
void ProcessPowerMessage(PowerEvent event_id);
// Constructor.
// Don't use this; access SystemMonitor via the Singleton.
SystemMonitor();
private:
// Platform-specific method to check whether the system is currently
// running on battery power. Returns true if running on batteries,
// false otherwise.
bool IsBatteryPower();
// Checks the battery status and notifies observers if the battery
// status has changed.
void BatteryCheck();
// Functions to trigger notifications.
void NotifyPowerStateChange();
void NotifySuspend();
void NotifyResume();
scoped_refptr<ObserverListThreadSafe<PowerObserver> > observer_list_;
bool battery_in_use_;
bool suspended_;
#if defined(ENABLE_BATTERY_MONITORING)
base::OneShotTimer<SystemMonitor> delayed_battery_check_;
#endif
DISALLOW_COPY_AND_ASSIGN(SystemMonitor);
};
}
#endif // BASE_SYSTEM_MONITOR_H_

14
ipc/chromium/src/base/system_monitor_posix.cc
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@ -1,14 +0,0 @@
// Copyright (c) 2008 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 "base/system_monitor.h"
namespace base {
bool SystemMonitor::IsBatteryPower() {
NOTIMPLEMENTED();
return false;
}
} // namespace base

49
ipc/chromium/src/base/system_monitor_win.cc
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@ -1,49 +0,0 @@
// Copyright (c) 2008 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 "base/system_monitor.h"
namespace base {
void SystemMonitor::ProcessWmPowerBroadcastMessage(int event_id) {
PowerEvent power_event;
switch (event_id) {
case PBT_APMPOWERSTATUSCHANGE: // The power status changed.
power_event = POWER_STATE_EVENT;
break;
case PBT_APMRESUMEAUTOMATIC: // Non-user initiated resume from suspend.
case PBT_APMRESUMESUSPEND: // User initiated resume from suspend.
power_event = RESUME_EVENT;
break;
case PBT_APMSUSPEND: // System has been suspended.
power_event = SUSPEND_EVENT;
break;
default:
return;
// Other Power Events:
// PBT_APMBATTERYLOW - removed in Vista.
// PBT_APMOEMEVENT - removed in Vista.
// PBT_APMQUERYSUSPEND - removed in Vista.
// PBT_APMQUERYSUSPENDFAILED - removed in Vista.
// PBT_APMRESUMECRITICAL - removed in Vista.
// PBT_POWERSETTINGCHANGE - user changed the power settings.
}
ProcessPowerMessage(power_event);
}
// Function to query the system to see if it is currently running on
// battery power. Returns true if running on battery.
bool SystemMonitor::IsBatteryPower() {
SYSTEM_POWER_STATUS status;
if (!GetSystemPowerStatus(&status)) {
CHROMIUM_LOG(ERROR) << "GetSystemPowerStatus failed: " << GetLastError();
return false;
}
return (status.ACLineStatus == 0);
}
} // namespace base

1
ipc/chromium/src/base/time_win.cc
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@ -45,7 +45,6 @@
#include "base/logging.h"
#include "base/cpu.h"
#include "base/singleton.h"
#include "base/system_monitor.h"
#include "mozilla/Casting.h"
using base::Time;