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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
#if defined(_WIN32) && !defined(__STDWX_H__)
#include "boinc_win.h"
#elif defined(_WIN32) && defined(__STDWX_H__)
#include "stdwx.h"
#endif
#include "win_util.h"
/**
* The following global data is only shared in this process
**/
HANDLE g_hMemoryMappedData = NULL;
/**
* The following global data is SHARED among all (processes); i.e., these are system-wide globals.
**/
struct SystemWideIdleData {
DWORD dwLastTick; // tick time of last input event
};
struct SystemWideIdleData* g_pSystemWideIdleData = NULL;
/**
* Get tick count of last keyboard or mouse event
**/
long get_idle_tick_count() {
DWORD dwCurrentTickCount = GetTickCount();
DWORD dwLastTickCount = 0;
if ( g_pSystemWideIdleData )
{
LASTINPUTINFO lii;
ZeroMemory( &lii, sizeof(lii) );
lii.cbSize = sizeof(lii);
GetLastInputInfo( &lii );
/**
* If both values are greater than the system tick count then
* the system must have looped back to the beginning.
**/
if ( ( dwCurrentTickCount < lii.dwTime ) &&
( dwCurrentTickCount < g_pSystemWideIdleData->dwLastTick ) )
{
lii.dwTime = dwCurrentTickCount;
g_pSystemWideIdleData->dwLastTick = dwCurrentTickCount;
}
if ( lii.dwTime > g_pSystemWideIdleData->dwLastTick )
g_pSystemWideIdleData->dwLastTick = lii.dwTime;
dwLastTickCount = g_pSystemWideIdleData->dwLastTick;
}
return (dwCurrentTickCount - dwLastTickCount);
}
bool startup_idle_monitor() {
BOOL bExists = FALSE;
bool bResult = false;
SECURITY_ATTRIBUTES sec_attr;
SECURITY_DESCRIPTOR sd;
/*
* Create a security descriptor that will allow
* everyone full access.
*/
InitializeSecurityDescriptor( &sd, SECURITY_DESCRIPTOR_REVISION );
SetSecurityDescriptorDacl( &sd, TRUE, NULL, FALSE );
sec_attr.nLength = sizeof(sec_attr);
sec_attr.bInheritHandle = TRUE;
sec_attr.lpSecurityDescriptor = &sd;
/*
* Create a filemap object that is global for everyone,
* including users logged in via terminal services.
*/
g_hMemoryMappedData =
CreateFileMapping(
INVALID_HANDLE_VALUE,
&sec_attr,
PAGE_READWRITE,
0,
4096,
_T("Global\\BoincIdleTracker")
);
if( NULL == g_hMemoryMappedData )
{
g_hMemoryMappedData =
CreateFileMapping(
INVALID_HANDLE_VALUE,
&sec_attr,
PAGE_READWRITE,
0,
4096,
_T("BoincIdleTracker")
);
}
if( NULL != g_hMemoryMappedData )
{
if( ERROR_ALREADY_EXISTS == GetLastError() )
bExists = TRUE;
g_pSystemWideIdleData = (struct SystemWideIdleData*)
MapViewOfFile(
g_hMemoryMappedData,
FILE_MAP_ALL_ACCESS,
0,
0,
0
);
}
if( !bExists && g_pSystemWideIdleData )
{
g_pSystemWideIdleData->dwLastTick = GetTickCount();
}
if (!g_hMemoryMappedData || !g_pSystemWideIdleData )
bResult = false;
else
bResult = true;
return bResult;
}
bool attach_idle_monitor() {
BOOL bExists = FALSE;
bool bResult = false;
SECURITY_ATTRIBUTES sec_attr;
SECURITY_DESCRIPTOR sd;
/*
* Create a security descriptor that will allow
* everyone full access.
*/
InitializeSecurityDescriptor( &sd, SECURITY_DESCRIPTOR_REVISION );
SetSecurityDescriptorDacl( &sd, TRUE, NULL, FALSE );
sec_attr.nLength = sizeof(sec_attr);
sec_attr.bInheritHandle = TRUE;
sec_attr.lpSecurityDescriptor = &sd;
/*
* Create a filemap object that is global for everyone,
* including users logged in via terminal services.
*/
g_hMemoryMappedData =
OpenFileMapping(
FILE_MAP_READ | FILE_MAP_WRITE,
FALSE,
_T("Global\\BoincIdleTracker")
);
if( NULL == g_hMemoryMappedData )
{
g_hMemoryMappedData =
OpenFileMapping(
FILE_MAP_READ | FILE_MAP_WRITE,
FALSE,
_T("BoincIdleTracker")
);
}
if( NULL != g_hMemoryMappedData )
{
if( ERROR_ALREADY_EXISTS == GetLastError() )
bExists = TRUE;
g_pSystemWideIdleData = (struct SystemWideIdleData*)
MapViewOfFile(
g_hMemoryMappedData,
FILE_MAP_ALL_ACCESS,
0,
0,
0
);
}
if( !bExists && g_pSystemWideIdleData )
{
g_pSystemWideIdleData->dwLastTick = GetTickCount();
}
if (!g_hMemoryMappedData || !g_pSystemWideIdleData )
bResult = false;
else
bResult = true;
return bResult;
}
void shutdown_idle_monitor()
{
if( NULL != g_pSystemWideIdleData )
{
UnmapViewOfFile(g_pSystemWideIdleData);
CloseHandle(g_hMemoryMappedData);
}
}
void detach_idle_monitor()
{
shutdown_idle_monitor();
}
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