EPICSVersionMapper.cc

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// SPDX-FileCopyrightText: Helmholtz-Zentrum Dresden-Rossendorf, FWKE, ChimeraTK Project <chimeratk-support@desy.de>
// SPDX-License-Identifier: LGPL-3.0-or-later
/*
 * VersionMapper.cc
 *
 *  Created on: Mar 23, 2021
 *      Author: Klaus Zenker (HZDR)
 */
 
#include "EPICSVersionMapper.h"
 
ChimeraTK::VersionNumber EPICS::VersionMapper::getVersion(const epicsTimeStamp& timeStamp) {
  std::lock_guard<std::mutex> lock(_mapMutex);
  int64_t timeStampEPOCH = (_epicsTimeOffset + timeStamp.secPastEpoch) * 1e9 + timeStamp.nsec;
  if(!_versionMap.count(timeStampEPOCH)) {
    if(_versionMap.size() == maxSizeEventIdMap) _versionMap.erase(_versionMap.begin());
    std::chrono::duration<int64_t, std::nano> tp(timeStampEPOCH);
    _versionMap[timeStampEPOCH] = ChimeraTK::VersionNumber(timePoint_t(tp));
  }
  return _versionMap[timeStampEPOCH];
}