void ComSession::ThrowIfError(
HRESULT result,
IUnknown* pObjectWithError,
REFIID rErrorInterface) const
{
if (FAILED(result)) {
std::auto_ptr<std::wostringstream> msg(new std::wostringstream);
DumpErrorInfo(msg.get(), pObjectWithError, rErrorInterface);
throw wexception(msg->str().c_str());
}
}
HRESULT CSQLCore::Init(LPCOLESTR strSQLConfig, DWORD nThreadIDNotify, DWORD cSilentThreads,
DWORD cNotifyThreads)
{
HRESULT hr = E_FAIL;
if (cSilentThreads + cNotifyThreads < 1 ||
cSilentThreads + cNotifyThreads > 20) // must have between 1 and 20 threads
return E_INVALIDARG;
m_nThreadIDNotify = nThreadIDNotify;
m_cSilentThreads = cSilentThreads;
m_cNotifyThreads = cNotifyThreads;
// create event used to signal that ALL sql threads should exit
m_hKillSQLEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
assert(m_hKillSQLEvent);
hr = m_connection.OpenFromInitializationString(strSQLConfig);
if (FAILED(hr))
{
DumpErrorInfo(m_connection.m_spInit, IID_IDBInitialize, NULL);
return hr;
}
m_hQueryNotify = CreateSemaphore(NULL, 0, MAXLONG, NULL);
m_hQuerySilent = CreateSemaphore(NULL, 0, MAXLONG, NULL);
m_pthdQueue = new CSQLQueueThread(m_hKillSQLEvent, this);
assert (m_pthdQueue);
m_pargSilentThreads = (CSQLThread **) new char[sizeof(CSQLThread *) * m_cSilentThreads];
m_pargNotifyThreads = (CSQLThread **) new char[sizeof(CSQLThread *) * m_cNotifyThreads];
DWORD i = 0;
for (i = 0; i < m_cNotifyThreads; i++)
{
m_pargNotifyThreads[i] = new CSQLThread(m_hKillSQLEvent, true, this);
}
for (i = 0; i < m_cSilentThreads; i++)
{
m_pargSilentThreads[i] = new CSQLThread(m_hKillSQLEvent, false, this);
}
return hr;
}
// DumpErrorInfo queries SQLOLEDB error interfaces, retrieving available
// status or error information.
inline void ComSession::DumpErrorInfo(
IUnknown* pObjectWithError,
REFIID rErrorInterface) const
{
DumpErrorInfo(&std::wcout, pObjectWithError, rErrorInterface);
}
