text: //  init_once.hpp  --------------------------------------------------------------//
  
  //  Copyright 2010 Vicente J. Botet Escriba
  //  Copyright 2015 Andrey Semashev
  
  //  Distributed under the Boost Software License, Version 1.0.
  //  See http://www.boost.org/LICENSE_1_0.txt
  
  
  #ifndef BOOST_DETAIL_WINAPI_INIT_ONCE_HPP
  #define BOOST_DETAIL_WINAPI_INIT_ONCE_HPP
  
  #include <boost/detail/winapi/config.hpp>
  
  #ifdef BOOST_HAS_PRAGMA_ONCE
  #pragma once
  #endif
  
  #if BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6
  
  #include <boost/detail/winapi/basic_types.hpp>
  
  #if !defined( BOOST_USE_WINDOWS_H )
  extern "C" {
  #if defined( BOOST_WINAPI_IS_MINGW_W64 )
  struct _RTL_RUN_ONCE;
  #else
  union _RTL_RUN_ONCE;
  #endif
  
  typedef boost::detail::winapi::BOOL_
  (WINAPI *PINIT_ONCE_FN) (
      ::_RTL_RUN_ONCE* InitOnce,
      boost::detail::winapi::PVOID_ Parameter,
      boost::detail::winapi::PVOID_ *Context);
  
  BOOST_SYMBOL_IMPORT boost::detail::winapi::VOID_ WINAPI
  InitOnceInitialize(::_RTL_RUN_ONCE* InitOnce);
  
  BOOST_SYMBOL_IMPORT boost::detail::winapi::BOOL_ WINAPI
  InitOnceExecuteOnce(
      ::_RTL_RUN_ONCE* InitOnce,
      ::PINIT_ONCE_FN InitFn,
      boost::detail::winapi::PVOID_ Parameter,
      boost::detail::winapi::LPVOID_ *Context);
  
  BOOST_SYMBOL_IMPORT boost::detail::winapi::BOOL_ WINAPI
  InitOnceBeginInitialize(
      ::_RTL_RUN_ONCE* lpInitOnce,
      boost::detail::winapi::DWORD_ dwFlags,
      boost::detail::winapi::PBOOL_ fPending,
      boost::detail::winapi::LPVOID_ *lpContext);
  
  BOOST_SYMBOL_IMPORT boost::detail::winapi::BOOL_ WINAPI
  InitOnceComplete(
      ::_RTL_RUN_ONCE* lpInitOnce,
      boost::detail::winapi::DWORD_ dwFlags,
      boost::detail::winapi::LPVOID_ lpContext);
  }
  #endif
  
  namespace boost {
  namespace detail {
  namespace winapi {
  
  typedef union BOOST_DETAIL_WINAPI_MAY_ALIAS _RTL_RUN_ONCE {
      PVOID_ Ptr;
  } INIT_ONCE_, *PINIT_ONCE_, *LPINIT_ONCE_;
  
  extern "C" {
  typedef BOOL_ (WINAPI *PINIT_ONCE_FN_) (PINIT_ONCE_ lpInitOnce, PVOID_ Parameter, PVOID_ *Context);
  }
  
  BOOST_FORCEINLINE VOID_ InitOnceInitialize(PINIT_ONCE_ lpInitOnce)
  {
      ::InitOnceInitialize(reinterpret_cast< ::_RTL_RUN_ONCE* >(lpInitOnce));
  }
  
  BOOST_FORCEINLINE BOOL_ InitOnceExecuteOnce(PINIT_ONCE_ lpInitOnce, PINIT_ONCE_FN_ InitFn, PVOID_ Parameter, LPVOID_ *Context)
  {
      return ::InitOnceExecuteOnce(reinterpret_cast< ::_RTL_RUN_ONCE* >(lpInitOnce), reinterpret_cast< ::PINIT_ONCE_FN >(InitFn), Parameter, Context);
  }
  
  BOOST_FORCEINLINE BOOL_ InitOnceBeginInitialize(PINIT_ONCE_ lpInitOnce, DWORD_ dwFlags, PBOOL_ fPending, LPVOID_ *lpContext)
  {
      return ::InitOnceBeginInitialize(reinterpret_cast< ::_RTL_RUN_ONCE* >(lpInitOnce), dwFlags, fPending, lpContext);
  }
  
  BOOST_FORCEINLINE BOOL_ InitOnceComplete(PINIT_ONCE_ lpInitOnce, DWORD_ dwFlags, LPVOID_ lpContext)
  {
      return ::InitOnceComplete(reinterpret_cast< ::_RTL_RUN_ONCE* >(lpInitOnce), dwFlags, lpContext);
  }
  
  #if defined( BOOST_USE_WINDOWS_H )
  
  #define BOOST_DETAIL_WINAPI_INIT_ONCE_STATIC_INIT INIT_ONCE_STATIC_INIT
  const DWORD_ INIT_ONCE_ASYNC_ = INIT_ONCE_ASYNC;
  const DWORD_ INIT_ONCE_CHECK_ONLY_ = INIT_ONCE_CHECK_ONLY;
  const DWORD_ INIT_ONCE_INIT_FAILED_ = INIT_ONCE_INIT_FAILED;
  const DWORD_ INIT_ONCE_CTX_RESERVED_BITS_ = INIT_ONCE_CTX_RESERVED_BITS;
  
  #else // defined( BOOST_USE_WINDOWS_H )
  
  #define BOOST_DETAIL_WINAPI_INIT_ONCE_STATIC_INIT {0}
  const DWORD_ INIT_ONCE_ASYNC_ = 0x00000002UL;
  const DWORD_ INIT_ONCE_CHECK_ONLY_ = 0x00000001UL;
  const DWORD_ INIT_ONCE_INIT_FAILED_ = 0x00000004UL;
  const DWORD_ INIT_ONCE_CTX_RESERVED_BITS_ = 2;
  
  #endif // defined( BOOST_USE_WINDOWS_H )
  
  const DWORD_ init_once_async = INIT_ONCE_ASYNC_;
  const DWORD_ init_once_check_only = INIT_ONCE_CHECK_ONLY_;
  const DWORD_ init_once_init_failed = INIT_ONCE_INIT_FAILED_;
  const DWORD_ init_once_ctx_reserved_bits = INIT_ONCE_CTX_RESERVED_BITS_;
  
  }
  }
  }
  
  #endif // BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6
  
  #endif // BOOST_DETAIL_WINAPI_INIT_ONCE_HPP
  