void Service::Run()
{
// We use a message loop here because this is arguably the easiest
// way to deal with the potential race conditions that exist between
// the service thread and the handler thread. The SCM will make no
// provisions for synchronizing status activity, the best bet is to
// ensure that all calls are handled through the service main thread.
MSG msg;
while (GetMessage(&msg, NULL, WM_USER, WM_USER) > 0) {
WPARAM opcode = msg.wParam;
if (opcode == SERVICE_CONTROL_STOP) {
SetStatus(SERVICE_STOP_PENDING);
OnStop();
break;
}
else if (opcode == SERVICE_CONTROL_PAUSE) {
OnPause();
}
else if (opcode == SERVICE_CONTROL_CONTINUE) {
OnContinue();
}
else if (opcode == SERVICE_CONTROL_INTERROGATE) {
OnInterrogate();
}
else if (opcode == SERVICE_CONTROL_SHUTDOWN) {
OnShutdown();
}
::SetServiceStatus(m_pThis->m_hServiceStatus, &m_pThis->m_Status);
}
}
DWORD Service::_HandlerEx(DWORD dwOpcode,DWORD dwEventType,LPVOID lpEventData,LPVOID lpContext)
{
m_dbgMsg(L"Service::Handler(%lu)", dwOpcode);
switch (dwOpcode) {
case SERVICE_CONTROL_STOP: // 1
SetStatus(SERVICE_STOP_PENDING);
OnStop();
m_bIsRunning = FALSE;
EVLOG_INFO(EVMSG_STOPPED);
break;
case SERVICE_CONTROL_PAUSE: // 2
OnPause();
break;
case SERVICE_CONTROL_CONTINUE: // 3
OnContinue();
break;
case SERVICE_CONTROL_INTERROGATE: // 4
OnInterrogate();
break;
case SERVICE_CONTROL_SHUTDOWN: // 5
OnShutdown();
break;
case SERVICE_CONTROL_DEVICEEVENT:
OnDeviceEvent(dwEventType,lpEventData);
break;
default:
if (dwOpcode >= SERVICE_CONTROL_USER) {
if (!OnUserControl(dwOpcode)) {
EVLOG_ERROR(EVMSG_BADREQUEST);
}
} else {
EVLOG_ERROR(EVMSG_BADREQUEST);
}
break;
}
// Report current status
m_dbgMsg(L"Updating status (%lu, %lu)", m_hServiceStatus, m_Status.dwCurrentState);
::SetServiceStatus(m_hServiceStatus, &m_Status);
#ifdef HANDLEREX
return NO_ERROR;
#endif HANDLEREX
}
