The Tor Browser: ipc/chromium/src/base/system_monitor

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 // Copyright (c) 2008 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.

     5 #include "base/system_monitor.h"

     7 namespace base {

     9 void SystemMonitor::ProcessWmPowerBroadcastMessage(int event_id) {

    10   PowerEvent power_event;

    11   switch (event_id) {

    12     case PBT_APMPOWERSTATUSCHANGE:  // The power status changed.

    13       power_event = POWER_STATE_EVENT;

    14       break;

    15     case PBT_APMRESUMEAUTOMATIC:  // Non-user initiated resume from suspend.

    16     case PBT_APMRESUMESUSPEND:    // User initiated resume from suspend.

    17       power_event = RESUME_EVENT;

    18       break;

    19     case PBT_APMSUSPEND:  // System has been suspended.

    20       power_event = SUSPEND_EVENT;

    21       break;

    22     default:

    23       return;

    25     // Other Power Events:

    26     // PBT_APMBATTERYLOW - removed in Vista.

    27     // PBT_APMOEMEVENT - removed in Vista.

    28     // PBT_APMQUERYSUSPEND - removed in Vista.

    29     // PBT_APMQUERYSUSPENDFAILED - removed in Vista.

    30     // PBT_APMRESUMECRITICAL - removed in Vista.

    31     // PBT_POWERSETTINGCHANGE - user changed the power settings.

    32   }

    33   ProcessPowerMessage(power_event);

    34 }

    36 // Function to query the system to see if it is currently running on

    37 // battery power.  Returns true if running on battery.

    38 bool SystemMonitor::IsBatteryPower() {

    39   SYSTEM_POWER_STATUS status;

    40   if (!GetSystemPowerStatus(&status)) {

    41     CHROMIUM_LOG(ERROR) << "GetSystemPowerStatus failed: " << GetLastError();

    42     return false;

    43   }

    44   return (status.ACLineStatus == 0);

    45 }

    49 } // namespace base

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