WorkerInPath.h

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#ifndef FWCore_Framework_WorkerInPath_h
#define FWCore_Framework_WorkerInPath_h
 
/*
 
    Author: Jim Kowalkowski 28-01-06
 
 
    A wrapper around a Worker, so that statistics can be managed
    per path.  A Path holds Workers as these things.
 
*/
 
#include "FWCore/Framework/src/Worker.h"
#include "FWCore/Concurrency/interface/WaitingTaskHolder.h"
#include "FWCore/ServiceRegistry/interface/ParentContext.h"
#include "FWCore/ServiceRegistry/interface/PlaceInPathContext.h"
 
namespace edm {
 
  class PathContext;
  class StreamID;
  class ServiceToken;
 
  class WorkerInPath {
  public:
    enum FilterAction { Normal = 0, Ignore, Veto };
 
    WorkerInPath(Worker*, FilterAction theAction, unsigned int placeInPath, bool runConcurrently);
 
    template <typename T>
    void runWorkerAsync(WaitingTaskHolder,
                        typename T::TransitionInfoType const&,
                        ServiceToken const&,
                        StreamID,
                        typename T::Context const*);
 
    bool checkResultsOfRunWorker(bool wasEvent);
 
    void skipWorker(EventPrincipal const& iPrincipal) { worker_->skipOnPath(iPrincipal); }
    void skipWorker(RunPrincipal const&) {}
    void skipWorker(LuminosityBlockPrincipal const&) {}
 
    void clearCounters() { timesVisited_ = timesPassed_ = timesFailed_ = timesExcept_ = 0; }
 
    int timesVisited() const { return timesVisited_; }
    int timesPassed() const { return timesPassed_; }
    int timesFailed() const { return timesFailed_; }
    int timesExcept() const { return timesExcept_; }
 
    FilterAction filterAction() const { return filterAction_; }
    Worker* getWorker() const { return worker_; }
    bool runConcurrently() const noexcept { return runConcurrently_; }
 
    void setPathContext(PathContext const* v) { placeInPathContext_.setPathContext(v); }
 
  private:
    int timesVisited_;
    int timesPassed_;
    int timesFailed_;
    int timesExcept_;
 
    FilterAction filterAction_;
    Worker* worker_;
 
    PlaceInPathContext placeInPathContext_;
    bool runConcurrently_;
  };
 
  inline bool WorkerInPath::checkResultsOfRunWorker(bool wasEvent) {
    if (not wasEvent) {
      return true;
    }
    auto state = worker_->state();
    bool rc = true;
    switch (state) {
      case Worker::Fail: {
        rc = false;
        break;
      }
      case Worker::Pass:
        break;
      case Worker::Exception: {
        ++timesExcept_;
        return true;
      }
 
      default:
        assert(false);
    }
 
    if (Ignore == filterAction()) {
      rc = true;
    } else if (Veto == filterAction()) {
      rc = !rc;
    }
 
    if (rc) {
      ++timesPassed_;
    } else {
      ++timesFailed_;
    }
    return rc;
  }
 
  template <typename T>
  void WorkerInPath::runWorkerAsync(WaitingTaskHolder iTask,
                                    typename T::TransitionInfoType const& info,
                                    ServiceToken const& token,
                                    StreamID streamID,
                                    typename T::Context const* context) {
    if constexpr (T::isEvent_) {
      ++timesVisited_;
    }
 
    if constexpr (T::isEvent_) {
      ParentContext parentContext(&placeInPathContext_);
      worker_->doWorkAsync<T>(iTask, info, token, streamID, parentContext, context);
    } else {
      ParentContext parentContext(context);
 
      // We do not need to run prefetching here because this only handles
      // stream transitions for runs and lumis. There are no products put
      // into the runs or lumis in stream transitions, so there can be
      // no data dependencies which require prefetching. Prefetching is
      // needed for global transitions, but they are run elsewhere.
      worker_->doWorkNoPrefetchingAsync<T>(iTask, info, token, streamID, parentContext, context);
    }
  }
}  // namespace edm
 
#endif