//////////////////////////////////////////////////////////////////////////////
 //
 // (C) Copyright Ion Gaztanaga 2005-2012. 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://www.boost.org/libs/interprocess for documentation.
 //
 //////////////////////////////////////////////////////////////////////////////
 
 #ifndef BOOST_INTERPROCESS_DETAIL_WINDOWS_MUTEX_HPP
 #define BOOST_INTERPROCESS_DETAIL_WINDOWS_MUTEX_HPP
 
 #ifndef BOOST_CONFIG_HPP
 #  include <boost/config.hpp>
 #endif
 #
 #if defined(BOOST_HAS_PRAGMA_ONCE)
 #  pragma once
 #endif
 
 #include <boost/interprocess/detail/config_begin.hpp>
 #include <boost/interprocess/detail/workaround.hpp>
 #include <boost/interprocess/detail/posix_time_types_wrk.hpp>
 #include <boost/interprocess/detail/win32_api.hpp>
 #include <boost/interprocess/detail/windows_intermodule_singleton.hpp>
 #include <boost/interprocess/sync/windows/sync_utils.hpp>
 #include <boost/interprocess/sync/windows/winapi_mutex_wrapper.hpp>
 #include <boost/interprocess/exceptions.hpp>
 
 
 namespace boost {
 namespace interprocess {
 namespace ipcdetail {
 
 class winapi_mutex
 {
    winapi_mutex(const winapi_mutex &);
    winapi_mutex &operator=(const winapi_mutex &);
    public:
 
    winapi_mutex();
    ~winapi_mutex();
 
    void lock();
    bool try_lock();
    bool timed_lock(const boost::posix_time::ptime &abs_time);
    void unlock();
    void take_ownership(){};
 
    private:
    const sync_id id_;
 };
 
 inline winapi_mutex::winapi_mutex()
    : id_(this)
 {
    sync_handles &handles =
       windows_intermodule_singleton<sync_handles>::get();
    //Create mutex with the initial count
    bool open_or_created;
    (void)handles.obtain_mutex(this->id_, &open_or_created);
    //The mutex must be created, never opened
    BOOST_ASSERT(open_or_created);
    BOOST_ASSERT(open_or_created && winapi::get_last_error() != winapi::error_already_exists);
    (void)open_or_created;
 }
 
 inline winapi_mutex::~winapi_mutex()
 {
    sync_handles &handles =
       windows_intermodule_singleton<sync_handles>::get();
    handles.destroy_handle(this->id_);
 }
 
 inline void winapi_mutex::lock(void)
 {
    sync_handles &handles =
       windows_intermodule_singleton<sync_handles>::get();
    //This can throw
    winapi_mutex_functions mut(handles.obtain_mutex(this->id_));
    mut.lock();
 }
 
 inline bool winapi_mutex::try_lock(void)
 {
    sync_handles &handles =
       windows_intermodule_singleton<sync_handles>::get();
    //This can throw
    winapi_mutex_functions mut(handles.obtain_mutex(this->id_));
    return mut.try_lock();
 }
 
 inline bool winapi_mutex::timed_lock(const boost::posix_time::ptime &abs_time)
 {
    sync_handles &handles =
       windows_intermodule_singleton<sync_handles>::get();
    //This can throw
    winapi_mutex_functions mut(handles.obtain_mutex(this->id_));
    return mut.timed_lock(abs_time);
 }
 
 inline void winapi_mutex::unlock(void)
 {
    sync_handles &handles =
       windows_intermodule_singleton<sync_handles>::get();
    //This can throw
    winapi_mutex_functions mut(handles.obtain_mutex(this->id_));
    return mut.unlock();
 }
 
 }  //namespace ipcdetail {
 }  //namespace interprocess {
 }  //namespace boost {
 
 #include <boost/interprocess/detail/config_end.hpp>
 
 #endif   //BOOST_INTERPROCESS_DETAIL_WINDOWS_MUTEX_HPP