static void ThreadFuncDedicatedDataset(void* _psThreadDescription)
{
ThreadDescription* psThreadDescription = (ThreadDescription*)_psThreadDescription;
int nXSize = psThreadDescription->poDS->GetRasterXSize();
int nYSize = psThreadDescription->poDS->GetRasterYSize();
void* pBuffer = CPLMalloc(psThreadDescription->nBufferSize);
while( psThreadDescription->psRequestList != NULL )
{
Request* psRequest = GetNextRequest(psThreadDescription->psRequestList);
ReadRaster(psThreadDescription->poDS, nXSize, nYSize, psRequest->nBands,
(GByte*)pBuffer, psRequest->nXOff, psRequest->nYOff, psRequest->nXWin, psRequest->nYWin);
CPLFree(psRequest);
}
CPLFree(pBuffer);
}
static void ThreadFuncWithMigration(void* /* _unused */)
{
Request* psRequest;
while( (psRequest = GetNextRequest(psGlobalRequestList)) != NULL )
{
Resource* psResource = AcquireFirstResource();
assert(psResource);
int nXSize = psResource->poDS->GetRasterXSize();
int nYSize = psResource->poDS->GetRasterYSize();
ReadRaster(psResource->poDS, nXSize, nYSize, psRequest->nBands,
(GByte*)psResource->pBuffer,
psRequest->nXOff, psRequest->nYOff, psRequest->nXWin, psRequest->nYWin);
CPLFree(psRequest);
PutResourceAtEnd(psResource);
}
}
void EHSServer::HandleData ( int inTimeoutMilliseconds, ///< milliseconds for timeout on select
pthread_t inThreadId ///< numeric ID for this thread to help debug
)
{
//fprintf ( stderr, "##### [%d] Trying to lock server mutex\n", inThreadId );
MUTEX_LOCK ( m_oMutex );
//fprintf ( stderr, "##### [%d] Got lock on server mutex\n", inThreadId );
// determine if there are any jobs waiting if this thread should --
// if we're running one-thread-per-request and this is the accept thread
// we don't look for requests
HttpRequest * poHttpRequest = NULL;
if ( m_nServerRunningStatus != SERVERRUNNING_ONETHREADPERREQUEST ||
!pthread_equal(inThreadId,m_nAcceptThreadId) ) {
poHttpRequest = GetNextRequest ( );
}
// if we got a request to handle
if ( poHttpRequest != NULL ) {
//fprintf ( stderr, "##### [%d] Got a request to handle\n", inThreadId );
// handle the request and post it back to the connection object
MUTEX_UNLOCK ( m_oMutex );
// route the request
HttpResponse * poHttpResponse =
m_poTopLevelEHS->RouteRequest ( poHttpRequest );
// add the response to the appropriate connection's response list
poHttpResponse->m_poEHSConnection->AddResponse ( poHttpResponse );
delete poHttpRequest;
}
// otherwise, no requests are pending
else {
// if something is already accepting, sleep
if ( m_nAccepting ) {
// wait until something happens
// it's ok to not recheck our condition here, as we'll come back in the same way and recheck then
//fprintf ( stderr, "##### [%d] Sleeping because no requests and someone else is accepting\n", inThreadId );
pthread_cond_wait ( & m_oDoneAccepting,
& m_oMutex );
MUTEX_UNLOCK ( m_oMutex );
}
// if no one is accepting, we accept
else {
m_nAcceptedNewConnection = 0;
//fprintf ( stderr, "Accepting\n" );
// we're now accepting
m_nAccepting = 1;
MUTEX_UNLOCK ( m_oMutex );
// create the FD set for poll
CreateFdSet();
int nSocketCount = poll( m_oReadFds.GetFdArray(), m_oReadFds.GetFdCount(), inTimeoutMilliseconds );
// handle select error
#ifdef _WIN32
if ( nSocketCount == SOCKET_ERROR )
#else // NOT _WIN32
if ( nSocketCount == -1 )
#endif // _WIN32
{
EHS_TRACE ( "[%d] Critical Error: select() failed. Aborting\n", inThreadId );
// Idea! Remove stupid idea
//exit ( 0 );
}
// if no sockets have data to read, clear accepting flag and return
if ( nSocketCount > 0 ) {
// Check the accept socket for a new connection
CheckAcceptSocket ( );
// check client sockets for data
CheckClientSockets ( );
}
MUTEX_LOCK ( m_oMutex );
ClearIdleConnections ( );
m_nAccepting = 0;
MUTEX_UNLOCK ( m_oMutex );
// Occasional pulse for updating of things
m_poTopLevelEHS->HttpPulse ();
} // END ACCEPTING
} // END NO REQUESTS PENDING
MUTEX_LOCK ( m_oMutex );
// Delete unused connections after all threads have been synced
EHSConnectionList :: iterator iter = m_oEHSConnectionUnusedList.begin ();
while ( iter != m_oEHSConnectionUnusedList.end () )
{
EHSConnection* pConnection = *iter;
// Delete it after all threads are past syncing point
if ( pConnection->m_UnusedSyncId < m_ThreadsSyncPoint.GetSyncId () - 1 )
{
iter = m_oEHSConnectionUnusedList.erase ( iter );
delete pConnection;
}
else
iter++;
}
MUTEX_UNLOCK ( m_oMutex );
}
VOID
SerialTryToCompleteCurrent(
IN PSERIAL_DEVICE_EXTENSION Extension,
IN PFN_WDF_INTERRUPT_SYNCHRONIZE SynchRoutine OPTIONAL,
IN NTSTATUS StatusToUse,
IN WDFREQUEST *CurrentOpRequest,
IN WDFQUEUE QueueToProcess OPTIONAL,
IN WDFTIMER IntervalTimer OPTIONAL,
IN WDFTIMER TotalTimer OPTIONAL,
IN PSERIAL_START_ROUTINE Starter OPTIONAL,
IN PSERIAL_GET_NEXT_ROUTINE GetNextRequest OPTIONAL,
IN LONG RefType
)
/*++
Routine Description:
This routine attempts to remove all of the reasons there are
references on the current read/write. If everything can be completed
it will complete this read/write and try to start another.
NOTE: This routine assumes that it is called with the cancel
spinlock held.
Arguments:
Extension - Simply a pointer to the device extension.
SynchRoutine - A routine that will synchronize with the isr
and attempt to remove the knowledge of the
current request from the isr. NOTE: This pointer
can be null.
IrqlForRelease - This routine is called with the cancel spinlock held.
This is the irql that was current when the cancel
spinlock was acquired.
StatusToUse - The request's status field will be set to this value, if
this routine can complete the request.
Return Value:
None.
--*/
{
PREQUEST_CONTEXT reqContext;
ASSERTMSG("SerialTryToCompleteCurrent: CurrentOpRequest is NULL", *CurrentOpRequest);
reqContext = SerialGetRequestContext(*CurrentOpRequest);
if(RefType == SERIAL_REF_ISR || RefType == SERIAL_REF_XOFF_REF) {
//
// We can decrement the reference to "remove" the fact
// that the caller no longer will be accessing this request.
//
SERIAL_CLEAR_REFERENCE(
reqContext,
RefType
);
}
if (SynchRoutine) {
WdfInterruptSynchronize(
Extension->WdfInterrupt,
SynchRoutine,
Extension
);
}
//
// Try to run down all other references to this request.
//
SerialRundownIrpRefs(
CurrentOpRequest,
IntervalTimer,
TotalTimer,
Extension,
RefType
);
if(StatusToUse == STATUS_CANCELLED) {
//
// This function is called from a cancelroutine. So mark
// the request as cancelled. We need to do this because
// we may not complete the request below if somebody
// else has a reference to it.
// This state variable was added to avoid calling
// WdfRequestMarkCancelable second time on a request that
// has cancelled but wasn't completed in the cancel routine.
//
reqContext->Cancelled = TRUE;
}
//
// See if the ref count is zero after trying to complete everybody else.
//
if (!SERIAL_REFERENCE_COUNT(reqContext)) {
WDFREQUEST newRequest;
//
// The ref count was zero so we should complete this
// request.
//
// The following call will also cause the current request to be
// completed.
//
reqContext->Status = StatusToUse;
if (StatusToUse == STATUS_CANCELLED) {
reqContext->Information = 0;
}
if (GetNextRequest) {
GetNextRequest(
CurrentOpRequest,
QueueToProcess,
&newRequest,
TRUE,
Extension
);
if (newRequest) {
Starter(Extension);
}
} else {
WDFREQUEST oldRequest = *CurrentOpRequest;
//
// There was no get next routine. We will simply complete
// the request. We should make sure that we null out the
// pointer to the pointer to this request.
//
*CurrentOpRequest = NULL;
SerialCompleteRequest(oldRequest,
reqContext->Status,
reqContext->Information);
}
} else {
}
}
