ChighPerformanceTimer::ChighPerformanceTimer(CString p_TimerName,bool p_Periodic,LONG p_Period)
{
// p_TimerName 定时器名；
// p_Periodic 设置是否为周期性定时器；
// p_Period时钟周期
g_Valid=false;
if (p_Periodic)
{
g_TimerPeriod=p_Period;
g_ManualReset=false;
}
else
{
g_TimerPeriod=0;
g_ManualReset=true;
}
g_Set=false;
g_TimerExpires.QuadPart=Int32x32To64(-10000,p_Period);
memset(g_Name,0,MAX_PATH);
if (! p_TimerName.IsEmpty())
if(p_TimerName.GetLength()>MAX_PATH)
memcpy(g_Name,p_TimerName,MAX_PATH);
else
memcpy(g_Name,p_TimerName,p_TimerName.GetLength());
//如果定时器已经创建， 则使用已有的定时器；否则建立一个新的定时器
g_TimerHandle=OpenWaitableTimer(TIMER_ALL_ACCESS | TIMER_MODIFY_STATE | SYNCHRONIZE,TRUE,(char *) g_Name);
if (g_TimerHandle==NULL)
{
//建立并且初始化缺省的安全描述符和属性
g_SecurityAttributes.lpSecurityDescriptor=&g_SecurityDescriptor;
InitializeSecurityDescriptor(g_SecurityAttributes.lpSecurityDescriptor,SECURITY_DESCRIPTOR_REVISION);
SetSecurityDescriptorDacl(g_SecurityAttributes.lpSecurityDescriptor,TRUE,(PACL)NULL,FALSE);
g_SecurityAttributes.nLength = sizeof SECURITY_ATTRIBUTES;
g_SecurityAttributes.bInheritHandle=TRUE;
g_TimerHandle=CreateWaitableTimer(&g_SecurityAttributes,g_ManualReset,(char *)g_Name);
}
if(g_TimerHandle==NULL)
{
//ERROR AND RETURN
return;
}
g_Result=g_WaitableTimer_TickOkay;//?????????
g_Valid=true;
}
unsigned __stdcall UpdateGlobalDBThread( void* Param )
{
#ifdef _SCROUT_
cout << "Update Global DB Thread" << endl;
#endif
//open timer for updating each hour
HANDLE hUpdate = OpenWaitableTimer( TIMER_ALL_ACCESS, NULL, L"ZZVBN-ARARA-12" );
//open timer for retrying if update failed
HANDLE hRetry = CreateWaitableTimer( NULL, FALSE, L"ZZVBN-ARARA-24" );
LARGE_INTEGER liDueTime;
const int nTimeUnits = 10000000;
while( true )
{
//wait for global timer
WaitForSingleObject( hUpdate, INFINITE ); //wake every hour
#ifdef _SCROUT_
cout << "Global Wake!" << endl;
#endif
while( CCameraObj.lLocal.empty() )
{
SwitchToThread(); //if local DB empty - switch to another thread
}
bool bSuccess = false;
do
{
bSuccess = CCameraObj.Connect( "localhost", 8888 ); //try to connect
if( bSuccess )
{
auto ptr = CCameraObj.lLocal.begin();
bSuccess = CCameraObj.Send( &*ptr ); // try to send
if( bSuccess )
{
//remove data sent
EnterCriticalSection( &csLocGlob );
CCameraObj.lLocal.erase( ptr );
LeaveCriticalSection( &csLocGlob );
if( !CCameraObj.lLocal.empty() )
{
CCameraObj.Disconnect();
}
else
{
break;
}
}
}
if( !bSuccess )
{
CCameraObj.Disconnect();
liDueTime.QuadPart = -(5/*5 minutes*/ * nTimeUnits);
SetWaitableTimer( hRetry, &liDueTime, 0, NULL, NULL, FALSE );
WaitForSingleObject( hRetry, INFINITE );
#ifdef _SCROUT
cout << "Local Wake!" << endl;
#endif
}
}
while( true );
CCameraObj.Disconnect();
/*
PLACEHOLDER
*/
}
return 0;
}
//
// String-aware overload
//
TWaitableTimer::TWaitableTimer(const tstring& name, bool inherit, uint32 access)
{
Handle = OpenWaitableTimer(access, inherit, name.c_str());
if (!Handle) throw TXOwl(_T("OpenWaitableTimer failed."));
}
bool WTimer::Open(DWORD dwDesiredAccess, BOOL bInheritHandle, LPCTSTR lpTimerName)
{
Close();
m_Timer = OpenWaitableTimer(dwDesiredAccess, bInheritHandle, lpTimerName);
return(m_Timer != NULL);
}
TWaitableTimer::TWaitableTimer(LPCTSTR name, bool inherit, uint32 access)
{
Handle = OpenWaitableTimer(access, inherit, name);
if (!Handle) throw TXOwl(_T("OpenWaitableTimer failed."));
}