ceph/src/boost/libs/compute/include/boost/compute/detail/global_static.hpp

   1 //---------------------------------------------------------------------------//
   2 // Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 // See http://boostorg.github.com/compute for more information.
   9 //---------------------------------------------------------------------------//
  10
  11 #ifndef BOOST_COMPUTE_DETAIL_GLOBAL_STATIC_HPP
  12 #define BOOST_COMPUTE_DETAIL_GLOBAL_STATIC_HPP
  13
  14 #include <boost/compute/config.hpp>
  15
  16 #ifdef BOOST_COMPUTE_THREAD_SAFE
  17 #  ifdef BOOST_COMPUTE_HAVE_THREAD_LOCAL
  18      // use c++11 thread local storage
  19 #    define BOOST_COMPUTE_DETAIL_GLOBAL_STATIC(type, name, ctor) \
  20        thread_local type name ctor;
  21 #  else
  22       // use thread_specific_ptr from boost.thread
  23 #     include <boost/thread/tss.hpp>
  24 #     define BOOST_COMPUTE_DETAIL_GLOBAL_STATIC(type, name, ctor) \
  25         static ::boost::thread_specific_ptr< type > BOOST_PP_CAT(name, _tls_ptr_); \
  26         if(!BOOST_PP_CAT(name, _tls_ptr_).get()){ \
  27             BOOST_PP_CAT(name, _tls_ptr_).reset(new type ctor); \
  28         } \
  29         static type &name = *BOOST_PP_CAT(name, _tls_ptr_);
  30 #  endif
  31 #else
  32    // no thread-safety, just use static
  33 #  define BOOST_COMPUTE_DETAIL_GLOBAL_STATIC(type, name, ctor) \
  34      static type name ctor;
  35 #endif
  36
  37 #endif // BOOST_COMPUTE_DETAIL_GLOBAL_STATIC_HPP