TFragWriteLoop.h

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#ifndef TWRITELOOP_H
#define TWRITELOOP_H
 
/** \addtogroup Loops
 *  @{
 */
 
////////////////////////////////////////////////////////////////////////////////
///
/// \class TFragWriteLoop
///
/// This loop writes fragments to a root-file.
///
////////////////////////////////////////////////////////////////////////////////
 
#include "TTree.h"
 
#include "StoppableThread.h"
#include "ThreadsafeQueue.h"
#include "TFragment.h"
#include "TBadFragment.h"
#include "TEpicsFrag.h"
 
class TFragWriteLoop : public StoppableThread {
public:
   static TFragWriteLoop* Get(std::string name = "", std::string fOutputFilename = "");
 
   TFragWriteLoop(const TFragWriteLoop&)                = delete;
   TFragWriteLoop(TFragWriteLoop&&) noexcept            = delete;
   TFragWriteLoop& operator=(const TFragWriteLoop&)     = delete;
   TFragWriteLoop& operator=(TFragWriteLoop&&) noexcept = delete;
   ~TFragWriteLoop();
 
#ifndef __CINT__
   std::shared_ptr<ThreadsafeQueue<std::shared_ptr<const TFragment>>>&    InputQueue() { return fInputQueue; }
   std::shared_ptr<ThreadsafeQueue<std::shared_ptr<const TBadFragment>>>& BadInputQueue() { return fBadInputQueue; }
   std::shared_ptr<ThreadsafeQueue<std::shared_ptr<TEpicsFrag>>>&         ScalerInputQueue() { return fScalerInputQueue; }
#endif
 
   void ClearQueue() override;
 
   void Write();
 
   // there is no output queue for this loop, so we assume that all items handled (= all good fragments written)
   // are also the number of items popped and that we have no current items
   size_t GetItemsPushed() override { return ItemsPopped(); }
   size_t GetItemsPopped() override { return ItemsPopped(); }
   size_t GetItemsCurrent() override { return 0; }
   size_t GetRate() override { return 0; }
 
   std::string EndStatus() override;
 
protected:
   bool Iteration() override;
 
private:
   TFragWriteLoop(std::string name, const std::string& fOutputFilename);
#ifndef __CINT__
   void WriteEvent(const std::shared_ptr<const TFragment>& event);
   void WriteBadEvent(const std::shared_ptr<const TBadFragment>& event);
   void WriteScaler(const std::shared_ptr<TEpicsFrag>& scaler);
#endif
 
   TFile* fOutputFile;
 
   TTree* fEventTree;
   TTree* fBadEventTree;
   TTree* fScalerTree;
 
   TFragment*    fEventAddress;
   TBadFragment* fBadEventAddress;
   TEpicsFrag*   fScalerAddress;
 
#ifndef __CINT__
   std::shared_ptr<ThreadsafeQueue<std::shared_ptr<const TFragment>>>    fInputQueue;
   std::shared_ptr<ThreadsafeQueue<std::shared_ptr<const TBadFragment>>> fBadInputQueue;
   std::shared_ptr<ThreadsafeQueue<std::shared_ptr<TEpicsFrag>>>         fScalerInputQueue;
#endif
 
   /// \cond CLASSIMP
   ClassDefOverride(TFragWriteLoop, 0)   // NOLINT(readability-else-after-return)
   /// \endcond
};
 
/*! @} */
#endif /* _TWRITELOOP_H_ */