globalTransitionAsync.h

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#ifndef FWCore_Framework_globalTransitionAsync_h
#define FWCore_Framework_globalTransitionAsync_h
// -*- C++ -*-
//
// Package:     FWCore/Framework
// Function:    globalTransitionAsync
//
//
// Original Author:  Chris Jones
//         Created:  Tue, 06 Sep 2016 16:04:26 GMT
//
 
#include "FWCore/Framework/interface/Schedule.h"
#include "FWCore/Framework/src/SubProcess.h"
#include "FWCore/Framework/src/TransitionInfoTypes.h"
#include "FWCore/Concurrency/interface/WaitingTask.h"
#include "FWCore/Concurrency/interface/WaitingTaskHolder.h"
 
#include <exception>
#include <utility>
#include <vector>
 
namespace edm {
 
  //This is code in common between beginStreamRun and beginGlobalLuminosityBlock
  template <typename T>
  inline void subProcessDoGlobalBeginTransitionAsync(WaitingTaskHolder iHolder,
                                                     SubProcess& iSubProcess,
                                                     LumiTransitionInfo const& iTransitionInfo,
                                                     bool) {
    iSubProcess.doBeginLuminosityBlockAsync(std::move(iHolder), iTransitionInfo);
  }
 
  template <typename T>
  inline void subProcessDoGlobalBeginTransitionAsync(WaitingTaskHolder iHolder,
                                                     SubProcess& iSubProcess,
                                                     RunTransitionInfo const& iTransitionInfo,
                                                     bool) {
    iSubProcess.doBeginRunAsync(std::move(iHolder), iTransitionInfo);
  }
 
  template <typename Traits>
  inline void subProcessDoGlobalBeginTransitionAsync(WaitingTaskHolder iHolder,
                                                     SubProcess& iSubProcess,
                                                     ProcessBlockTransitionInfo const& iTransitionInfo,
                                                     bool cleaningUpAfterException) {
    iSubProcess.doBeginProcessBlockAsync<Traits>(std::move(iHolder), iTransitionInfo, cleaningUpAfterException);
  }
 
  inline void subProcessDoGlobalEndTransitionAsync(WaitingTaskHolder iHolder,
                                                   SubProcess& iSubProcess,
                                                   LumiTransitionInfo const& iTransitionInfo,
                                                   bool cleaningUpAfterException) {
    iSubProcess.doEndLuminosityBlockAsync(std::move(iHolder), iTransitionInfo, cleaningUpAfterException);
  }
 
  inline void subProcessDoGlobalEndTransitionAsync(WaitingTaskHolder iHolder,
                                                   SubProcess& iSubProcess,
                                                   RunTransitionInfo const& iTransitionInfo,
                                                   bool cleaningUpAfterException) {
    iSubProcess.doEndRunAsync(std::move(iHolder), iTransitionInfo, cleaningUpAfterException);
  }
 
  inline void subProcessDoGlobalEndTransitionAsync(WaitingTaskHolder iHolder,
                                                   SubProcess& iSubProcess,
                                                   ProcessBlockTransitionInfo const& iTransitionInfo,
                                                   bool cleaningUpAfterException) {
    iSubProcess.doEndProcessBlockAsync(std::move(iHolder), iTransitionInfo, cleaningUpAfterException);
  }
 
  template <typename Traits>
  void beginGlobalTransitionAsync(WaitingTaskHolder iWait,
                                  Schedule& iSchedule,
                                  typename Traits::TransitionInfoType& transitionInfo,
                                  ServiceToken const& token,
                                  std::vector<SubProcess>& iSubProcesses,
                                  bool cleaningUpAfterException = false) {
    // When we are done processing the global for this process,
    // we need to run the global for all SubProcesses
    auto subs = make_waiting_task([&iSubProcesses, iWait, info = transitionInfo, cleaningUpAfterException](
                                      std::exception_ptr const* iPtr) mutable {
      if (iPtr) {
        auto excpt = *iPtr;
        auto delayError =
            make_waiting_task([iWait, excpt](std::exception_ptr const*) mutable { iWait.doneWaiting(excpt); });
        WaitingTaskHolder h(*iWait.group(), delayError);
        for (auto& subProcess : iSubProcesses) {
          subProcessDoGlobalBeginTransitionAsync<Traits>(h, subProcess, info, cleaningUpAfterException);
        }
      } else {
        for (auto& subProcess : iSubProcesses) {
          subProcessDoGlobalBeginTransitionAsync<Traits>(iWait, subProcess, info, cleaningUpAfterException);
        }
      }
    });
 
    WaitingTaskHolder h(*iWait.group(), subs);
    iSchedule.processOneGlobalAsync<Traits>(std::move(h), transitionInfo, token, cleaningUpAfterException);
  }
 
  template <typename Traits>
  void endGlobalTransitionAsync(WaitingTaskHolder iWait,
                                Schedule& iSchedule,
                                typename Traits::TransitionInfoType& transitionInfo,
                                ServiceToken const& token,
                                std::vector<SubProcess>& iSubProcesses,
                                bool cleaningUpAfterException) {
    // When we are done processing the global for this process,
    // we need to run the global for all SubProcesses
    auto subs = make_waiting_task([&iSubProcesses, iWait, info = transitionInfo, cleaningUpAfterException](
                                      std::exception_ptr const* iPtr) mutable {
      if (iPtr) {
        auto excpt = *iPtr;
        auto delayError =
            make_waiting_task([iWait, excpt](std::exception_ptr const*) mutable { iWait.doneWaiting(excpt); });
        WaitingTaskHolder h(*iWait.group(), delayError);
        for (auto& subProcess : iSubProcesses) {
          subProcessDoGlobalEndTransitionAsync(h, subProcess, info, cleaningUpAfterException);
        }
      } else {
        for (auto& subProcess : iSubProcesses) {
          subProcessDoGlobalEndTransitionAsync(iWait, subProcess, info, cleaningUpAfterException);
        }
      }
    });
 
    WaitingTaskHolder h(*iWait.group(), subs);
    iSchedule.processOneGlobalAsync<Traits>(std::move(h), transitionInfo, token, cleaningUpAfterException);
  }
 
};  // namespace edm
 
#endif