MueLu_MutuallyExclusiveTime.hpp

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#ifndef MUELU_MUTUALLYEXCLUSIVETIME_HPP
#define MUELU_MUTUALLYEXCLUSIVETIME_HPP

#include <string>
#include <stack>
#include "Teuchos_RCPDecl.hpp"          // for RCP

// types for explicit instantiation
#include "MueLu_FactoryBase_fwd.hpp"
#include "MueLu_Level_fwd.hpp"
#include "MueLu_BaseClass.hpp"

namespace MueLu {

  template<class TagName>
  class MutuallyExclusiveTime : public BaseClass {

  public:


    MutuallyExclusiveTime(const std::string &name, bool startFlag=false);

    ~MutuallyExclusiveTime();

    void start(bool reset=false);



    double stop();

    void pause();


    void resume();





    bool isRunning();

    bool isPaused();


    // Note: this function is provided by the timer class, not by a monitor (!= Teuchos)
    static RCP<MutuallyExclusiveTime<TagName> > getNewTimer(const std::string& name);

    void incrementNumCalls();

    std::string name_;

    static void PrintParentChildPairs();

  private:

    MutuallyExclusiveTime(RCP<Teuchos::Time> timer);

    // MutuallyExclusiveTime() { }

    RCP<Teuchos::Time> timer_;
    bool isPaused_;

    // - empty when no active timer
    // - head is the active timer
    // - other timers are timers paused to enforce the mutually exclusive property of the timer set.
    static std::stack<MutuallyExclusiveTime<TagName>*> timerStack_;
    //static std::map<std::string,std::string> myParent_;

    void TopOfTheStack();

  //TODO: test integrity of the stack:
  // Head = running or paused
  // Other timers of the stack = paused

  };

  extern template class MutuallyExclusiveTime<FactoryBase>;
  extern template class MutuallyExclusiveTime<Level>;
  extern template class MutuallyExclusiveTime<BaseClass>;

} // namespace MueLu

#endif // MUELU_MUTUALLYEXCLUSIVETIME_HPP