//---------------------------------------------------------------------------
// @function:
// CMDProviderTest::EresUnittest_Negative
//
// @doc:
// Test fetching non-exiting metadata objects from a file-based provider
//
//---------------------------------------------------------------------------
GPOS_RESULT
CMDProviderTest::EresUnittest_Negative()
{
CAutoMemoryPool amp(CAutoMemoryPool::ElcNone);
IMemoryPool *pmp = amp.Pmp();
CMDProviderMemory *pmdpFile = GPOS_NEW(pmp) CMDProviderMemory(pmp, szFileName);
pmdpFile->AddRef();
// we need to use an auto pointer for the cache here to ensure
// deleting memory of cached objects when we throw
CAutoP<CMDAccessor::MDCache> apcache;
apcache = CCacheFactory::PCacheCreate<gpopt::IMDCacheObject*, gpopt::CMDKey*>
(
true, // fUnique
0 /* unlimited cache quota */,
CMDKey::UlHashMDKey,
CMDKey::FEqualMDKey
);
CMDAccessor::MDCache *pcache = apcache.Pt();
{
CAutoMDAccessor amda(pmp, pmdpFile, CTestUtils::m_sysidDefault, pcache);
// lookup a non-existing objects
CMDIdGPDB *pmdid = GPOS_NEW(pmp) CMDIdGPDB(GPOPT_MDCACHE_TEST_OID, 15 /* major version */, 1 /* minor version */);
// call should result in an exception
(void) pmdpFile->PstrObject(pmp, amda.Pmda(), pmdid);
}
return GPOS_FAILED;
}
//---------------------------------------------------------------------------
// @function:
// CAutoTaskProxy::PtskCreate
//
// @doc:
// Create new task;
// Bind task to function and argument and associate with task and error context;
// If caller is a task, its task context is cloned and used by the new task;
//
//---------------------------------------------------------------------------
CTask *
CAutoTaskProxy::PtskCreate
(
void *(*pfunc)(void*),
void *pvArg,
volatile BOOL *pfCancel
)
{
// create memory pool for task
CAutoMemoryPool amp(CAutoMemoryPool::ElcStrict);
IMemoryPool *pmp = amp.Pmp();
// auto pointer to hold new task context
CAutoP<CTaskContext> aptc;
// check if caller is a task
ITask *ptskParent = CWorker::PwrkrSelf()->Ptsk();
if (NULL == ptskParent)
{
// create new task context
aptc = GPOS_NEW(pmp) CTaskContext(pmp);
}
else
{
// clone parent task's context
aptc = GPOS_NEW(pmp) CTaskContext(pmp, *ptskParent->Ptskctxt());
}
// auto pointer to hold error context
CAutoP<CErrorContext> apec;
apec = GPOS_NEW(pmp) CErrorContext();
CTask *ptsk = CTask::PtskSelf();
if (NULL != ptsk)
{
apec.Pt()->Register(ptsk->PerrctxtConvert()->Pmdr());
}
// auto pointer to hold new task
// task is created inside ATP's memory pool
CAutoP<CTask> apt;
apt = GPOS_NEW(m_pmp) CTask(pmp, aptc.Pt(), apec.Pt(), &m_event, pfCancel);
// reset auto pointers - task now handles task and error context
(void) aptc.PtReset();
(void) apec.PtReset();
// detach task's memory pool from auto memory pool
amp.PmpDetach();
// bind function and argument
ptsk = apt.Pt();
ptsk->Bind(pfunc, pvArg);
// add to task list
m_list.Append(ptsk);
// reset auto pointer - ATP now handles task
apt.PtReset();
// register task to worker pool
m_pwpm->RegisterTask(ptsk);
return ptsk;
}
//---------------------------------------------------------------------------
// @function:
// gpos_exec
//
// @doc:
// Execute function as a GPOS task using current thread;
// return 0 for successful completion, 1 for error;
//
//---------------------------------------------------------------------------
int gpos_exec
(
gpos_exec_params *params
)
{
// check if passed parameters are valid
if (NULL == params || NULL == params->func)
{
return 1;
}
try
{
CWorkerPoolManager *pwpm = CWorkerPoolManager::Pwpm();
// check if worker pool is initialized
if (NULL == pwpm)
{
return 1;
}
// if no stack start address is passed, use address in current stack frame
void *pvStackStart = params->stack_start;
if (NULL == pvStackStart)
{
pvStackStart = &pwpm;
}
// put worker to stack - main thread has id '0'
CWorker wrkr(0, GPOS_WORKER_STACK_SIZE, (ULONG_PTR) pvStackStart);
// scope for memory pool
{
// setup task memory
CAutoMemoryPool amp(CAutoMemoryPool::ElcStrict);
IMemoryPool *pmp = amp.Pmp();
// scope for ATP
{
// task handler for this process
CAutoTaskProxy atp(pmp, pwpm, false/*fPropagateError*/);
CTask *ptsk = atp.PtskCreate(params->func, params->arg, params->abort_requested);
// init TLS
ptsk->Tls().Reset(pmp);
CAutoP<CWStringStatic> apwstr;
CAutoP<COstreamString> aposs;
CAutoP<CLoggerStream> aplogger;
// use passed buffer for logging
if (NULL != params->error_buffer)
{
GPOS_ASSERT(0 < params->error_buffer_size);
apwstr = GPOS_NEW(pmp) CWStringStatic
(
(WCHAR *) params->error_buffer,
params->error_buffer_size / GPOS_SIZEOF(WCHAR)
);
aposs = GPOS_NEW(pmp) COstreamString(apwstr.Pt());
aplogger = GPOS_NEW(pmp) CLoggerStream(*aposs.Pt());
CTaskContext *ptskctxt = ptsk->Ptskctxt();
ptskctxt->SetLogOut(aplogger.Pt());
ptskctxt->SetLogErr(aplogger.Pt());
}
// execute function
atp.Execute(ptsk);
// export task result
params->result = ptsk->PvRes();
// check for errors during execution
if (CTask::EtsError == ptsk->Ets())
{
return 1;
}
}
}
}
catch(CException ex)
{
std::cerr
<< "Unexpected exception reached top of execution stack:"
<< " major=" << ex.UlMajor()
<< " minor=" << ex.UlMinor()
<< " file=" << ex.SzFilename()
<< " line=" << ex.UlLine()
<< std::endl;
// unexpected failure
return 1;
}
catch (...)
{
// unexpected failure
return 1;
}
return 0;
}