thread_local.h

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#ifndef CLHEP_THREAD_LOCAL_H
#define CLHEP_THREAD_LOCAL_H

// ======================================================================
//
// Use thread_local when the compiler declares it uses the C++11 standard
//
// ======================================================================

#if defined (G4MULTITHREADED)

  #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 7) || __clang__ || WIN32
    #define CLHEP_THREAD_LOCAL thread_local
  #else
    #define CLHEP_THREAD_LOCAL
  #endif

#else
  #define CLHEP_THREAD_LOCAL
#endif

#endif