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119 lines
3.4 KiB
C++
119 lines
3.4 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/interprocess for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTERPROCESS_DETAIL_WINDOWS_MUTEX_HPP
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#define BOOST_INTERPROCESS_DETAIL_WINDOWS_MUTEX_HPP
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#ifndef BOOST_CONFIG_HPP
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# include <boost/config.hpp>
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#endif
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#
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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#include <boost/interprocess/detail/config_begin.hpp>
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#include <boost/interprocess/detail/workaround.hpp>
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#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
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#include <boost/interprocess/detail/win32_api.hpp>
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#include <boost/interprocess/detail/windows_intermodule_singleton.hpp>
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#include <boost/interprocess/sync/windows/sync_utils.hpp>
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#include <boost/interprocess/sync/windows/winapi_mutex_wrapper.hpp>
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#include <boost/interprocess/exceptions.hpp>
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namespace boost {
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namespace interprocess {
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namespace ipcdetail {
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class windows_mutex
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{
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windows_mutex(const windows_mutex &);
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windows_mutex &operator=(const windows_mutex &);
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public:
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windows_mutex();
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~windows_mutex();
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void lock();
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bool try_lock();
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bool timed_lock(const boost::posix_time::ptime &abs_time);
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void unlock();
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void take_ownership(){};
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private:
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const sync_id id_;
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};
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inline windows_mutex::windows_mutex()
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: id_(this)
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{
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sync_handles &handles =
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windows_intermodule_singleton<sync_handles>::get();
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//Create mutex with the initial count
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bool open_or_created;
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(void)handles.obtain_mutex(this->id_, &open_or_created);
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//The mutex must be created, never opened
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BOOST_ASSERT(open_or_created);
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BOOST_ASSERT(open_or_created && winapi::get_last_error() != winapi::error_already_exists);
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(void)open_or_created;
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}
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inline windows_mutex::~windows_mutex()
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{
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sync_handles &handles =
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windows_intermodule_singleton<sync_handles>::get();
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handles.destroy_handle(this->id_);
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}
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inline void windows_mutex::lock(void)
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{
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sync_handles &handles =
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windows_intermodule_singleton<sync_handles>::get();
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//This can throw
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winapi_mutex_functions mut(handles.obtain_mutex(this->id_));
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mut.lock();
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}
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inline bool windows_mutex::try_lock(void)
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{
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sync_handles &handles =
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windows_intermodule_singleton<sync_handles>::get();
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//This can throw
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winapi_mutex_functions mut(handles.obtain_mutex(this->id_));
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return mut.try_lock();
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}
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inline bool windows_mutex::timed_lock(const boost::posix_time::ptime &abs_time)
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{
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sync_handles &handles =
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windows_intermodule_singleton<sync_handles>::get();
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//This can throw
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winapi_mutex_functions mut(handles.obtain_mutex(this->id_));
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return mut.timed_lock(abs_time);
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}
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inline void windows_mutex::unlock(void)
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{
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sync_handles &handles =
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windows_intermodule_singleton<sync_handles>::get();
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//This can throw
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winapi_mutex_functions mut(handles.obtain_mutex(this->id_));
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return mut.unlock();
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}
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} //namespace ipcdetail {
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} //namespace interprocess {
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} //namespace boost {
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#include <boost/interprocess/detail/config_end.hpp>
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#endif //BOOST_INTERPROCESS_DETAIL_WINDOWS_MUTEX_HPP
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