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//---------------------------------------------------------------------------//
// Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
//
// Distributed under the Boost Software License, Version 1.0
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
//
// See http://boostorg.github.com/compute for more information.
//---------------------------------------------------------------------------//
#ifndef BOOST_COMPUTE_DETAIL_GLOBAL_STATIC_HPP
#define BOOST_COMPUTE_DETAIL_GLOBAL_STATIC_HPP
#include <boost/compute/config.hpp>
#ifdef BOOST_COMPUTE_THREAD_SAFE
# ifdef BOOST_COMPUTE_HAVE_THREAD_LOCAL
// use c++11 thread local storage
# define BOOST_COMPUTE_DETAIL_GLOBAL_STATIC(type, name, ctor) \
thread_local type name ctor;
# else
// use thread_specific_ptr from boost.thread
# include <boost/thread/tss.hpp>
# define BOOST_COMPUTE_DETAIL_GLOBAL_STATIC(type, name, ctor) \
static ::boost::thread_specific_ptr< type > BOOST_PP_CAT(name, _tls_ptr_); \
if(!BOOST_PP_CAT(name, _tls_ptr_).get()){ \
BOOST_PP_CAT(name, _tls_ptr_).reset(new type ctor); \
} \
static type &name = *BOOST_PP_CAT(name, _tls_ptr_);
# endif
#else
// no thread-safety, just use static
# define BOOST_COMPUTE_DETAIL_GLOBAL_STATIC(type, name, ctor) \
static type name ctor;
#endif
#endif // BOOST_COMPUTE_DETAIL_GLOBAL_STATIC_HPP
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