Chris@16:  //////////////////////////////////////////////////////////////////////////////
Chris@16: //
Chris@16: // (C) Copyright Ion Gaztanaga 2011-2012. Distributed under the Boost
Chris@16: // Software License, Version 1.0. (See accompanying file
Chris@16: // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/interprocess for documentation.
Chris@16: //
Chris@16: //////////////////////////////////////////////////////////////////////////////
Chris@16: 
Chris@16: #ifndef BOOST_INTERPROCESS_DETAIL_WINAPI_MUTEX_WRAPPER_HPP
Chris@16: #define BOOST_INTERPROCESS_DETAIL_WINAPI_MUTEX_WRAPPER_HPP
Chris@16: 
Chris@101: #ifndef BOOST_CONFIG_HPP
Chris@101: #  include <boost/config.hpp>
Chris@101: #endif
Chris@101: #
Chris@101: #if defined(BOOST_HAS_PRAGMA_ONCE)
Chris@16: #  pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/interprocess/detail/config_begin.hpp>
Chris@16: #include <boost/interprocess/detail/workaround.hpp>
Chris@16: #include <boost/interprocess/creation_tags.hpp>
Chris@16: #include <boost/interprocess/permissions.hpp>
Chris@16: #include <boost/interprocess/detail/win32_api.hpp>
Chris@16: #include <boost/interprocess/detail/posix_time_types_wrk.hpp>
Chris@101: #include <boost/interprocess/sync/windows/winapi_wrapper_common.hpp>
Chris@16: #include <boost/interprocess/errors.hpp>
Chris@16: #include <boost/interprocess/exceptions.hpp>
Chris@16: #include <limits>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace interprocess {
Chris@16: namespace ipcdetail {
Chris@16: 
Chris@16: class winapi_mutex_functions
Chris@16: {
Chris@101:    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
Chris@16: 
Chris@16:    //Non-copyable
Chris@16:    winapi_mutex_functions(const winapi_mutex_functions &);
Chris@16:    winapi_mutex_functions &operator=(const winapi_mutex_functions &);
Chris@101:    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
Chris@16: 
Chris@16:    public:
Chris@16:    winapi_mutex_functions(void *mtx_hnd)
Chris@16:       : m_mtx_hnd(mtx_hnd)
Chris@16:    {}
Chris@16: 
Chris@16:    void unlock()
Chris@101:    {  winapi::release_mutex(m_mtx_hnd);   }
Chris@16: 
Chris@16:    void lock()
Chris@101:    {  return winapi_wrapper_wait_for_single_object(m_mtx_hnd);  }
Chris@16: 
Chris@16:    bool try_lock()
Chris@101:    {  return winapi_wrapper_try_wait_for_single_object(m_mtx_hnd);  }
Chris@16: 
Chris@16:    bool timed_lock(const boost::posix_time::ptime &abs_time)
Chris@101:    {  return winapi_wrapper_timed_wait_for_single_object(m_mtx_hnd, abs_time);  }
Chris@16: 
Chris@101:    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
Chris@16:    protected:
Chris@16:    void *m_mtx_hnd;
Chris@101:    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
Chris@16: };
Chris@16: 
Chris@16: //Swappable mutex wrapper
Chris@16: class winapi_mutex_wrapper
Chris@16:    : public winapi_mutex_functions
Chris@16: {
Chris@101:    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
Chris@16: 
Chris@16:    //Non-copyable
Chris@16:    winapi_mutex_wrapper(const winapi_mutex_wrapper &);
Chris@16:    winapi_mutex_wrapper &operator=(const winapi_mutex_wrapper &);
Chris@101:    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
Chris@101: 
Chris@101:    //Note that Windows API does not return winapi::invalid_handle_value
Chris@101:    //when failing to create/open a mutex, but a nullptr
Chris@16: 
Chris@16:    public:
Chris@101:    winapi_mutex_wrapper(void *mtx_hnd = 0)
Chris@16:       : winapi_mutex_functions(mtx_hnd)
Chris@16:    {}
Chris@16: 
Chris@16:    ~winapi_mutex_wrapper()
Chris@16:    {  this->close(); }
Chris@16: 
Chris@16:    void *release()
Chris@16:    {
Chris@16:       void *hnd = m_mtx_hnd;
Chris@101:       m_mtx_hnd = 0;
Chris@16:       return hnd;
Chris@16:    }
Chris@16: 
Chris@16:    void *handle() const
Chris@16:    {  return m_mtx_hnd; }
Chris@16: 
Chris@16:    bool open_or_create(const char *name, const permissions &perm)
Chris@16:    {
Chris@101:       if(m_mtx_hnd == 0){
Chris@16:          m_mtx_hnd = winapi::open_or_create_mutex
Chris@16:             ( name
Chris@16:             , false
Chris@16:             , (winapi::interprocess_security_attributes*)perm.get_permissions()
Chris@16:             );
Chris@101:          return m_mtx_hnd != 0;
Chris@16:       }
Chris@16:       else{
Chris@16:          return false;
Chris@16:       }
Chris@101:    }
Chris@16: 
Chris@16:    void close()
Chris@16:    {
Chris@101:       if(m_mtx_hnd != 0){
Chris@16:          winapi::close_handle(m_mtx_hnd);
Chris@101:          m_mtx_hnd = 0;
Chris@16:       }
Chris@16:    }
Chris@16: 
Chris@16:    void swap(winapi_mutex_wrapper &other)
Chris@16:    {  void *tmp = m_mtx_hnd; m_mtx_hnd = other.m_mtx_hnd; other.m_mtx_hnd = tmp;   }
Chris@16: };
Chris@16: 
Chris@16: }  //namespace ipcdetail {
Chris@16: }  //namespace interprocess {
Chris@16: }  //namespace boost {
Chris@16: 
Chris@16: #include <boost/interprocess/detail/config_end.hpp>
Chris@16: 
Chris@16: #endif   //BOOST_INTERPROCESS_DETAIL_WINAPI_MUTEX_WRAPPER_HPP