MueLu_TimeMonitor.cpp

Go to the documentation of this file.

// @HEADER
//
// ***********************************************************************
//
//        MueLu: A package for multigrid based preconditioning
//                  Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact
//                    Jonathan Hu       (jhu@sandia.gov)
//                    Andrey Prokopenko (aprokop@sandia.gov)
//                    Ray Tuminaro      (rstumin@sandia.gov)
//
// ***********************************************************************
//
// @HEADER

#include "MueLu_ConfigDefs.hpp"
#include "MueLu_TimeMonitor.hpp"
#include "MueLu_FactoryBase.hpp"
#include "MueLu_Level.hpp"

namespace MueLu {

  TimeMonitor::TimeMonitor(const BaseClass& object, const std::string& msg, MsgType timerLevel) {
    // Inherit props from 'object'
    SetVerbLevel      (object.GetVerbLevel());
    SetProcRankVerbose(object.GetProcRankVerbose());

    if (IsPrint(timerLevel) &&
        /* disable timer if never printed: */ (IsPrint(RuntimeTimings) || (!IsPrint(NoTimeReport)))) {

      if (!IsPrint(NoTimeReport)) {
        // TODO: there is no function to register a timer in Teuchos::TimeMonitor after the creation of the timer. But would be useful...
        timer_ = Teuchos::TimeMonitor::getNewTimer("MueLu: " + msg);
      } else {
        timer_ = rcp(new Teuchos::Time("MueLu: " + msg));
      }

      // Start the timer (this is what is done by Teuchos::TimeMonitor)
      timer_->start();
      timer_->incrementNumCalls();
#ifdef HAVE_TEUCHOS_ADD_TIME_MONITOR_TO_STACKED_TIMER
      const auto stackedTimer = Teuchos::TimeMonitor::getStackedTimer();
      if (nonnull(stackedTimer))
        stackedTimer->start(timer_->name());
#endif
    }
  } //TimeMonitor::TimeMonitor()

  TimeMonitor::TimeMonitor() {}

  TimeMonitor::~TimeMonitor() {
    // Stop the timer if present
    if (timer_ != Teuchos::null) {
      timer_->stop();
#ifdef HAVE_TEUCHOS_ADD_TIME_MONITOR_TO_STACKED_TIMER
      try {
        const auto stackedTimer = Teuchos::TimeMonitor::getStackedTimer();
        if (nonnull(stackedTimer))
          stackedTimer->stop(timer_->name());
      }
      catch (std::runtime_error&) {
        std::ostringstream warning;
        warning <<
          "\n*********************************************************************\n"
          "WARNING: Overlapping timers detected!\n"
          "A TimeMonitor timer was stopped before a nested subtimer was\n"
          "stopped. This is not allowed by the StackedTimer. This corner case\n"
          "typically occurs if the TimeMonitor is stored in an RCP and the RCP is\n"
          "assigned to a new timer. To disable this warning, either fix the\n"
          "ordering of timer creation and destuction or disable the StackedTimer\n";
        std::cout << warning.str() << std::endl;
        Teuchos::TimeMonitor::setStackedTimer(Teuchos::null);
      }
#endif
    }
  } //TimeMonitor::~TimeMonitor()

  template class MutuallyExclusiveTimeMonitor<FactoryBase>;
  template class MutuallyExclusiveTimeMonitor<Level>;

} // namespace MueLu