TMCtls.h

// @(#)root/vmc:$Id$
// Author: Ivana Hrivnacova, 29/04/2014

/*************************************************************************
 * Copyright (C) 2014, Rene Brun and Fons Rademakers.                    *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/

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// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
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// * include a list of copyright holders.                             *
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#ifndef ROOT_TMCtls
#define ROOT_TMCtls

// Thread Local Storage typedefs
//
// According to Geant4 tls.hh and G4Threading.hh

// Always build with thread support but keep a possibility to introduce
// a build option
#define VMC_MULTITHREADED 1

#if ( defined (VMC_MULTITHREADED) )

#if (defined(__MACH__) && defined(__clang__) && defined(__x86_64__)) || (defined(__linux__) && defined(__clang__))
#if (__has_feature(cxx_thread_local))
#define TMCThreadLocalStatic static thread_local
#define TMCThreadLocal thread_local
#else
#define TMCThreadLocalStatic static __thread
#define TMCThreadLocal __thread
#endif

#elif ((defined(__linux__) || defined(__MACH__)) && !defined(__INTEL_COMPILER) && defined(__GNUC__) && \
       (__GNUC__ >= 4 && __GNUC_MINOR__ < 9))
#define TMCThreadLocalStatic static __thread
#define TMCThreadLocal thread_local

#elif ((defined(__linux__) || defined(__MACH__)) && !defined(__INTEL_COMPILER) && defined(__GNUC__) && \
          (__GNUC__ >= 4 && __GNUC_MINOR__ >= 9) ||                                                    \
       __GNUC__ >= 5)
#define TMCThreadLocalStatic static thread_local
#define TMCThreadLocal thread_local

#elif ((defined(__linux__) || defined(__MACH__)) && defined(__INTEL_COMPILER))
#if (__INTEL_COMPILER >= 1500)
#define TMCThreadLocalStatic static thread_local
#define TMCThreadLocal thread_local
#else
#define TMCThreadLocalStatic static __thread
#define TMCThreadLocal __thread
#endif
#else
//#  error "No Thread Local Storage (TLS) technology supported for this platform. Use sequential build !"
#define TMCThreadLocalStatic static
#define TMCThreadLocal
#endif
#else
#define TMCThreadLocalStatic static
#define TMCThreadLocal
#endif

#endif //ROOT_TMCtls