C++ typenameMDEventWorkspace::setFileNeedsUpdating方法代码示例

  void MinusMD::doMinus(typename MDEventWorkspace<MDE, nd>::sptr ws)
  {
    typename MDEventWorkspace<MDE, nd>::sptr ws1 = ws;
    typename MDEventWorkspace<MDE, nd>::sptr ws2 = boost::dynamic_pointer_cast<MDEventWorkspace<MDE, nd> >(m_operand_event);
    if (!ws1 || !ws2)
      throw std::runtime_error("Incompatible workspace types passed to MinusMD.");

    MDBoxBase<MDE,nd> * box1 = ws1->getBox();
    MDBoxBase<MDE,nd> * box2 = ws2->getBox();

    Progress prog(this, 0.0, 0.4, box2->getBoxController()->getTotalNumMDBoxes());

    // How many events you started with
    size_t initial_numEvents = ws1->getNPoints();

    // Make a leaf-only iterator through all boxes with events in the RHS workspace
    MDBoxIterator<MDE,nd> it2(box2, 1000, true);
    do
    {
      MDBox<MDE,nd> * box = dynamic_cast<MDBox<MDE,nd> *>(it2.getBox());
      if (box)
      {
        // Copy the events from WS2 and add them into WS1
        const std::vector<MDE> & events = box->getConstEvents();

        // Perform a copy while flipping the signal
        std::vector<MDE> eventsCopy;
        eventsCopy.reserve(events.size());
        for (auto it = events.begin(); it != events.end(); it++)
        {
          MDE eventCopy(*it);
          eventCopy.setSignal( -eventCopy.getSignal());
          eventsCopy.push_back(eventCopy);
        }
        // Add events, with bounds checking
        box1->addEvents(eventsCopy);
        box->releaseEvents();
      }
      prog.report("Adding Events");
    } while (it2.next());

    this->progress(0.41, "Splitting Boxes");
    Progress * prog2 = new Progress(this, 0.4, 0.9, 100);
    ThreadScheduler * ts = new ThreadSchedulerFIFO();
    ThreadPool tp(ts, 0, prog2);
    ws1->splitAllIfNeeded(ts);
    prog2->resetNumSteps( ts->size(), 0.4, 0.6);
    tp.joinAll();


    this->progress(0.95, "Refreshing cache");
    ws1->refreshCache();

    // Set a marker that the file-back-end needs updating if the # of events changed.
    if (ws1->getNPoints() != initial_numEvents)
      ws1->setFileNeedsUpdating(true);
  }

  void MultiplyMD::execEventScalar(typename MDEventWorkspace<MDE, nd>::sptr ws)
  {
    // Get the scalar multiplying
    float scalar = float(m_rhs_scalar->dataY(0)[0]);
    float scalarError = float(m_rhs_scalar->dataE(0)[0]);
    float scalarRelativeErrorSquared = (scalarError * scalarError) / (scalar * scalar);

    // Get all the MDBoxes contained
    MDBoxBase<MDE,nd> * parentBox = ws->getBox();
    std::vector<API::IMDNode *> boxes;
    parentBox->getBoxes(boxes, 1000, true);

    bool fileBackedTarget(false);
    Kernel::DiskBuffer *dbuff(NULL);
    if(ws->isFileBacked())
    {
        fileBackedTarget = true;
        dbuff = ws->getBoxController()->getFileIO();
    }
 

    for (size_t i=0; i<boxes.size(); i++)
    {
      MDBox<MDE,nd> * box = dynamic_cast<MDBox<MDE,nd> *>(boxes[i]);
      if (box)
      {
        typename std::vector<MDE> & events = box->getEvents();
        size_t ic(events.size());
        typename std::vector<MDE>::iterator it = events.begin();
        typename std::vector<MDE>::iterator it_end = events.end();
        for (; it != it_end; it++)
        {
          // Multiply weight by a scalar, propagating error
          float oldSignal = it->getSignal();
          float signal = oldSignal * scalar;
          float errorSquared = signal * signal * (it->getErrorSquared() / (oldSignal * oldSignal) + scalarRelativeErrorSquared);
          it->setSignal(signal);
          it->setErrorSquared(errorSquared);
        }
        box->releaseEvents();
        if(fileBackedTarget && ic>0)
        {
            Kernel::ISaveable *const pSaver(box->getISaveable());
            dbuff->toWrite(pSaver);
        }

      }
    }
    // Recalculate the totals
    ws->refreshCache();
    // Mark file-backed workspace as dirty
    ws->setFileNeedsUpdating(true);
  }

//.........这里部分代码省略.........
      throw std::runtime_error(" attempt to update non-file backed workspace");
    filename = bc->getFileIO()->getFileName();
  }

  //-----------------------------------------------------------------------------------------------------
  // create or open WS group and put there additional information about WS and
  // its dimensions
  int nDims = static_cast<int>(nd);
  bool data_exist;
  auto file = file_holder_type(MDBoxFlatTree::createOrOpenMDWSgroup(
      filename, nDims, MDE::getTypeName(), false, data_exist));

  // Save each NEW ExperimentInfo to a spot in the file
  MDBoxFlatTree::saveExperimentInfos(file.get(), ws);
  if (!update || !data_exist) {
    MDBoxFlatTree::saveWSGenericInfo(file.get(), ws);
  }
  file->closeGroup();
  file->close();

  MDBoxFlatTree BoxFlatStruct;
  //-----------------------------------------------------------------------------------------------------
  if (update) // the workspace is already file backed;
  {
    // remove all boxes from the DiskBuffer. DB will calculate boxes positions
    // on HDD.
    bc->getFileIO()->flushCache();
    // flatten the box structure; this will remember boxes file positions in the
    // box structure
    BoxFlatStruct.initFlatStructure(ws, filename);
  } else // not file backed;
  {
    // the boxes file positions are unknown and we need to calculate it.
    BoxFlatStruct.initFlatStructure(ws, filename);
    // create saver class
    auto Saver = boost::shared_ptr<API::IBoxControllerIO>(
        new DataObjects::BoxControllerNeXusIO(bc.get()));
    Saver->setDataType(sizeof(coord_t), MDE::getTypeName());
    if (MakeFileBacked) {
      // store saver with box controller
      bc->setFileBacked(Saver, filename);
      // get access to boxes array
      std::vector<API::IMDNode *> &boxes = BoxFlatStruct.getBoxes();
      // calculate the position of the boxes on file, indicating to make them
      // saveable and that the boxes were not saved.
      BoxFlatStruct.setBoxesFilePositions(true);
      prog->resetNumSteps(boxes.size(), 0.06, 0.90);
      for (auto &boxe : boxes) {
        auto saveableTag = boxe->getISaveable();
        if (saveableTag) // only boxes can be saveable
        {
          // do not spend time on empty boxes
          if (boxe->getDataInMemorySize() == 0)
            continue;
          // save boxes directly using the boxes file postion, precalculated in
          // boxFlatStructure.
          saveableTag->save();
          // remove boxes data from memory. This will actually correctly set the
          // tag indicatin that data were not loaded.
          saveableTag->clearDataFromMemory();
          // put boxes into write buffer wich will save them when necessary
          // Saver->toWrite(saveTag);
          prog->report("Saving Box");
        }
      }
      // remove everything from diskBuffer;  (not sure if it really necessary
      // but just in case , should not make any harm)
      Saver->flushCache();
      // drop NeXus on HDD (not sure if it really necessary but just in case )
      Saver->flushData();
    } else // just save data, and finish with it
    {
      Saver->openFile(filename, "w");
      BoxFlatStruct.setBoxesFilePositions(false);
      std::vector<API::IMDNode *> &boxes = BoxFlatStruct.getBoxes();
      std::vector<uint64_t> &eventIndex = BoxFlatStruct.getEventIndex();
      prog->resetNumSteps(boxes.size(), 0.06, 0.90);
      for (size_t i = 0; i < boxes.size(); i++) {
        if (eventIndex[2 * i + 1] == 0)
          continue;
        boxes[i]->saveAt(Saver.get(), eventIndex[2 * i]);
        prog->report("Saving Box");
      }
      Saver->closeFile();
    }
  }

  // -------------- Save Box Structure  -------------------------------------
  // OK, we've filled these big arrays of data representing flat box structrre.
  // Save them.
  progress(0.91, "Writing Box Data");
  prog->resetNumSteps(8, 0.92, 1.00);

  // Save box structure;
  BoxFlatStruct.saveBoxStructure(filename);

  delete prog;

  ws->setFileNeedsUpdating(false);
}

  void PlusMD::doPlus(typename MDEventWorkspace<MDE, nd>::sptr ws)
  {
    typename MDEventWorkspace<MDE, nd>::sptr ws1 = ws;
    typename MDEventWorkspace<MDE, nd>::sptr ws2 = boost::dynamic_pointer_cast<MDEventWorkspace<MDE, nd> >(m_operand_event);
    if (!ws1 || !ws2)
      throw std::runtime_error("Incompatible workspace types passed to PlusMD.");

    MDBoxBase<MDE,nd> * box1 = ws1->getBox();
    MDBoxBase<MDE,nd> * box2 = ws2->getBox();

    Progress prog(this, 0.0, 0.4, box2->getBoxController()->getTotalNumMDBoxes());

    // How many events you started with
    size_t initial_numEvents = ws1->getNPoints();

    // Make a leaf-only iterator through all boxes with events in the RHS workspace
    MDBoxIterator<MDE,nd> it2(box2, 1000, true);
    do
    {
      MDBox<MDE,nd> * box = dynamic_cast<MDBox<MDE,nd> *>(it2.getBox());
      if (box)
      {
        // Copy the events from WS2 and add them into WS1
        const std::vector<MDE> & events = box->getConstEvents();
        // Add events, with bounds checking
        box1->addEvents(events);
        box->releaseEvents();
      }
      prog.report("Adding Events");
    } while (it2.next());

    this->progress(0.41, "Splitting Boxes");
    Progress * prog2 = new Progress(this, 0.4, 0.9, 100);
    ThreadScheduler * ts = new ThreadSchedulerFIFO();
    ThreadPool tp(ts, 0, prog2);
    ws1->splitAllIfNeeded(ts);
    prog2->resetNumSteps( ts->size(), 0.4, 0.6);
    tp.joinAll();

//    // Now we need to save all the data that was not saved before.
//    if (ws1->isFileBacked())
//    {
//      // Flush anything else in the to-write buffer
//      BoxController_sptr bc = ws1->getBoxController();
//
//      prog.resetNumSteps(bc->getTotalNumMDBoxes(), 0.6, 1.0);
//      MDBoxIterator<MDE,nd> it1(box1, 1000, true);
//      while (true)
//      {
//        MDBox<MDE,nd> * box = dynamic_cast<MDBox<MDE,nd> *>(it1.getBox());
//        if (box)
//        {
//          // Something was maybe added to this box
//          if (box->getEventVectorSize() > 0)
//          {
//            // By getting the events, this will merge the newly added and the cached events.
//            box->getEvents();
//            // The MRU to-write cache will optimize writes by reducing seek times
//            box->releaseEvents();
//          }
//        }
//        prog.report("Saving");
//        if (!it1.next()) break;
//      }
//      //bc->getDiskBuffer().flushCache();
//      // Flush the data writes to disk.
//      box1->flushData();
//    }

    this->progress(0.95, "Refreshing cache");
    ws1->refreshCache();

    // Set a marker that the file-back-end needs updating if the # of events changed.
    if (ws1->getNPoints() != initial_numEvents)
      ws1->setFileNeedsUpdating(true);

  }