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1 #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_HPP_INCLUDED
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2 #define BOOST_SMART_PTR_DETAIL_SPINLOCK_HPP_INCLUDED
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3
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4 // MS compatible compilers support #pragma once
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5
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6 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
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7 # pragma once
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8 #endif
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9
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10 //
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11 // boost/detail/spinlock.hpp
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12 //
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13 // Copyright (c) 2008 Peter Dimov
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14 //
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15 // Distributed under the Boost Software License, Version 1.0.
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16 // See accompanying file LICENSE_1_0.txt or copy at
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17 // http://www.boost.org/LICENSE_1_0.txt)
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18 //
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19 // struct spinlock
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20 // {
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21 // void lock();
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22 // bool try_lock();
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23 // void unlock();
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24 //
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25 // class scoped_lock;
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26 // };
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27 //
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28 // #define BOOST_DETAIL_SPINLOCK_INIT <unspecified>
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29 //
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30
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31 #include <boost/config.hpp>
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32 #include <boost/smart_ptr/detail/sp_has_sync.hpp>
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33
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34 #if defined( BOOST_SP_USE_STD_ATOMIC )
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35 # if !defined( __clang__ )
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36 # include <boost/smart_ptr/detail/spinlock_std_atomic.hpp>
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37 # else
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38 // Clang (at least up to 3.4) can't compile spinlock_pool when
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39 // using std::atomic, so substitute the __sync implementation instead.
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40 # include <boost/smart_ptr/detail/spinlock_sync.hpp>
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41 # endif
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42
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43 #elif defined( BOOST_SP_USE_PTHREADS )
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44 # include <boost/smart_ptr/detail/spinlock_pt.hpp>
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45
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46 #elif defined(__GNUC__) && defined( __arm__ ) && !defined( __thumb__ )
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47 # include <boost/smart_ptr/detail/spinlock_gcc_arm.hpp>
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48
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49 #elif defined( BOOST_SP_HAS_SYNC )
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50 # include <boost/smart_ptr/detail/spinlock_sync.hpp>
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51
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52 #elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
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53 # include <boost/smart_ptr/detail/spinlock_w32.hpp>
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54
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55 #elif defined(BOOST_HAS_PTHREADS)
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56 # include <boost/smart_ptr/detail/spinlock_pt.hpp>
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57
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58 #elif !defined(BOOST_HAS_THREADS)
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59 # include <boost/smart_ptr/detail/spinlock_nt.hpp>
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60
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61 #else
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62 # error Unrecognized threading platform
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63 #endif
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64
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65 #endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_HPP_INCLUDED
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