ceph/src/boost/boost/smart_ptr/detail/spinlock.hpp

   1 #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_HPP_INCLUDED
   2 #define BOOST_SMART_PTR_DETAIL_SPINLOCK_HPP_INCLUDED
   3
   4 // MS compatible compilers support #pragma once
   5
   6 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
   7 # pragma once
   8 #endif
   9
  10 //
  11 //  boost/detail/spinlock.hpp
  12 //
  13 //  Copyright (c) 2008 Peter Dimov
  14 //
  15 //  Distributed under the Boost Software License, Version 1.0.
  16 //  See accompanying file LICENSE_1_0.txt or copy at
  17 //  http://www.boost.org/LICENSE_1_0.txt)
  18 //
  19 //  struct spinlock
  20 //  {
  21 //      void lock();
  22 //      bool try_lock();
  23 //      void unlock();
  24 //
  25 //      class scoped_lock;
  26 //  };
  27 //
  28 //  #define BOOST_DETAIL_SPINLOCK_INIT <unspecified>
  29 //
  30
  31 #include <boost/config.hpp>
  32 #include <boost/smart_ptr/detail/sp_has_sync.hpp>
  33
  34 #if defined( BOOST_SP_USE_STD_ATOMIC )
  35 # if !defined( __clang__ )
  36 #   include <boost/smart_ptr/detail/spinlock_std_atomic.hpp>
  37 # else
  38 //  Clang (at least up to 3.4) can't compile spinlock_pool when
  39 //  using std::atomic, so substitute the __sync implementation instead.
  40 #   include <boost/smart_ptr/detail/spinlock_sync.hpp>
  41 # endif
  42
  43 #elif defined( BOOST_SP_USE_PTHREADS )
  44 #  include <boost/smart_ptr/detail/spinlock_pt.hpp>
  45
  46 #elif !defined( BOOST_NO_CXX11_HDR_ATOMIC )
  47 #  include <boost/smart_ptr/detail/spinlock_std_atomic.hpp>
  48
  49 #elif defined(__GNUC__) && defined( __arm__ ) && !defined( __thumb__ )
  50 #  include <boost/smart_ptr/detail/spinlock_gcc_arm.hpp>
  51
  52 #elif defined( BOOST_SP_HAS_SYNC )
  53 #  include <boost/smart_ptr/detail/spinlock_sync.hpp>
  54
  55 #elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
  56 #  include <boost/smart_ptr/detail/spinlock_w32.hpp>
  57
  58 #elif defined(BOOST_HAS_PTHREADS)
  59 #  include <boost/smart_ptr/detail/spinlock_pt.hpp>
  60
  61 #elif !defined(BOOST_HAS_THREADS)
  62 #  include <boost/smart_ptr/detail/spinlock_nt.hpp>
  63
  64 #else
  65 #  error Unrecognized threading platform
  66 #endif
  67
  68 #endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_HPP_INCLUDED