mlPageRequestProcessor.h

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/*************************************************************************************
**
** Copyright 2009, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
#ifndef ML_PAGE_REQUEST_PROCESSOR_H
#define ML_PAGE_REQUEST_PROCESSOR_H
 
 
// ML-includes
#include "mlInitSystemML.h"
 
#include "mlInitSystemML.h"
 
ML_START_NAMESPACE
 
class TileRequest;
class PageRequest;
class PageRequestCursor;
 
//-------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------
class MLEXPORT PageRequestQueueInterface
{
public:
  virtual ~PageRequestQueueInterface() {};
 
  virtual void append(PageRequest* request) = 0;
};
 
 
//-------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------
class MLEXPORT PageRequestProcessor : public PageRequestQueueInterface
{
public:
  ~PageRequestProcessor() override {}
 
  virtual void addRootTileRequest(TileRequest* tileRequest) = 0;
 
  virtual void processAll() = 0;
 
  virtual void process(double timeBudget) = 0;
 
  virtual bool needsProcessing() = 0;
 
  virtual void removeCancelledRequests() = 0;
 
  virtual void enterProcessingScope() = 0;
 
  virtual void leaveProcessingScope() = 0;
 
  virtual void setNumWorkerThreads(std::size_t /*threads*/) = 0;
 
  virtual bool processingWasSingleThreaded() const = 0;
 
  static void enableTileRequestAllocationFailure(int count = 1);
  static void disableTileRequestAllocationFailure();
 
};
 
 
ML_END_NAMESPACE
 
#endif //of __mlPageRequestProcessor_H