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/* $Id$ */
/** @file
*
* VirtualBox interface to host's power notification service
*/
/*
* Copyright (C) 2006-2016 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/win/windows.h>
/* Some SDK versions lack the extern "C" and thus cause linking failures.
* This workaround isn't pretty, but there are not many options. */
extern "C" {
#include <PowrProf.h>
}
#include <VBox/com/ptr.h>
#include "HostPower.h"
#include "Logging.h"
static WCHAR gachWindowClassName[] = L"VBoxPowerNotifyClass";
HostPowerServiceWin::HostPowerServiceWin(VirtualBox *aVirtualBox) : HostPowerService(aVirtualBox), mThread(NIL_RTTHREAD)
{
mHwnd = 0;
int rc = RTThreadCreate(&mThread, HostPowerServiceWin::NotificationThread, this, 65536,
RTTHREADTYPE_GUI, RTTHREADFLAGS_WAITABLE, "MainPower");
if (RT_FAILURE(rc))
{
Log(("HostPowerServiceWin::HostPowerServiceWin: RTThreadCreate failed with %Rrc\n", rc));
return;
}
}
HostPowerServiceWin::~HostPowerServiceWin()
{
if (mHwnd)
{
Log(("HostPowerServiceWin::!HostPowerServiceWin: destroy window %x\n", mHwnd));
/* Poke the thread out of the event loop and wait for it to clean up. */
PostMessage(mHwnd, WM_CLOSE, 0, 0);
RTThreadWait(mThread, 5000, NULL);
mThread = NIL_RTTHREAD;
}
}
DECLCALLBACK(int) HostPowerServiceWin::NotificationThread(RTTHREAD hThreadSelf, void *pInstance)
{
RT_NOREF(hThreadSelf);
HostPowerServiceWin *pPowerObj = (HostPowerServiceWin *)pInstance;
HWND hwnd = 0;
/* Create a window and make it a power event notification handler. */
int rc = VINF_SUCCESS;
HINSTANCE hInstance = (HINSTANCE)GetModuleHandle(NULL);
/* Register the Window Class. */
WNDCLASS wc;
wc.style = CS_NOCLOSE;
wc.lpfnWndProc = HostPowerServiceWin::WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = sizeof(void *);
wc.hInstance = hInstance;
wc.hIcon = NULL;
wc.hCursor = NULL;
wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND + 1);
wc.lpszMenuName = NULL;
wc.lpszClassName = gachWindowClassName;
ATOM atomWindowClass = RegisterClass(&wc);
if (atomWindowClass == 0)
{
rc = VERR_NOT_SUPPORTED;
Log(("HostPowerServiceWin::NotificationThread: RegisterClassA failed with %x\n", GetLastError()));
}
else
{
/* Create the window. */
hwnd = pPowerObj->mHwnd = CreateWindowEx(WS_EX_TOOLWINDOW | WS_EX_TRANSPARENT | WS_EX_TOPMOST,
gachWindowClassName, gachWindowClassName,
WS_POPUPWINDOW,
-200, -200, 100, 100, NULL, NULL, hInstance, NULL);
if (hwnd == NULL)
{
Log(("HostPowerServiceWin::NotificationThread: CreateWindowExA failed with %x\n", GetLastError()));
rc = VERR_NOT_SUPPORTED;
}
else
{
SetWindowLongPtr(hwnd, 0, (LONG_PTR)pPowerObj);
SetWindowPos(hwnd, HWND_TOPMOST, -200, -200, 0, 0,
SWP_NOACTIVATE | SWP_HIDEWINDOW | SWP_NOCOPYBITS | SWP_NOREDRAW | SWP_NOSIZE);
MSG msg;
BOOL fRet;
while ((fRet = GetMessage(&msg, NULL, 0, 0)) > 0)
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
/*
* Window procedure can return error,
* but this is exceptional situation
* that should be identified in testing
*/
Assert(fRet >= 0);
}
}
Log(("HostPowerServiceWin::NotificationThread: exit thread\n"));
if (atomWindowClass != 0)
{
UnregisterClass(gachWindowClassName, hInstance);
atomWindowClass = 0;
}
return 0;
}
LRESULT CALLBACK HostPowerServiceWin::WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_POWERBROADCAST:
{
HostPowerServiceWin *pPowerObj;
pPowerObj = (HostPowerServiceWin *)GetWindowLongPtr(hwnd, 0);
if (pPowerObj)
{
switch(wParam)
{
case PBT_APMSUSPEND:
pPowerObj->notify(Reason_HostSuspend);
break;
case PBT_APMRESUMEAUTOMATIC:
pPowerObj->notify(Reason_HostResume);
break;
case PBT_APMPOWERSTATUSCHANGE:
{
SYSTEM_POWER_STATUS SystemPowerStatus;
Log(("PBT_APMPOWERSTATUSCHANGE\n"));
if (GetSystemPowerStatus(&SystemPowerStatus) == TRUE)
{
Log(("PBT_APMPOWERSTATUSCHANGE ACLineStatus=%d BatteryFlag=%d\n", SystemPowerStatus.ACLineStatus,
SystemPowerStatus.BatteryFlag));
if (SystemPowerStatus.ACLineStatus == 0) /* offline */
{
if (SystemPowerStatus.BatteryFlag == 2 /* low > 33% */)
{
LONG rc;
SYSTEM_BATTERY_STATE BatteryState;
rc = CallNtPowerInformation(SystemBatteryState, NULL, 0, (PVOID)&BatteryState,
sizeof(BatteryState));
#ifdef LOG_ENABLED
if (rc == 0 /* STATUS_SUCCESS */)
Log(("CallNtPowerInformation claims %d seconds of power left\n",
BatteryState.EstimatedTime));
#endif
if ( rc == 0 /* STATUS_SUCCESS */
&& BatteryState.EstimatedTime < 60*5)
{
pPowerObj->notify(Reason_HostBatteryLow);
}
}
/* If the machine has less than 5% battery left (and is not connected
* to the AC), then we should save the state. */
else if (SystemPowerStatus.BatteryFlag == 4 /* critical battery status; less than 5% */)
{
pPowerObj->notify(Reason_HostBatteryLow);
}
}
}
break;
}
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
}
return TRUE;
}
case WM_DESTROY:
{
/* moved here. it can't work across theads */
SetWindowLongPtr(hwnd, 0, 0);
PostQuitMessage(0);
return 0;
}
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
}
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