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//////////////////////////////////////////////////////////////////////////////
//
// (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/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>
#include <boost/interprocess/timed_utils.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();
template<class TimePoint> bool timed_lock(const TimePoint &abs_time);
template<class TimePoint> bool try_lock_until(const TimePoint &abs_time)
{ return this->timed_lock(abs_time); }
template<class Duration> bool try_lock_for(const Duration &dur)
{ return this->timed_lock(duration_to_ustime(dur)); }
void unlock();
void take_ownership(){};
private:
const sync_id id_;
};
inline winapi_mutex::winapi_mutex()
: id_()
{
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_, this, &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_, this);
}
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_, this));
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_, this));
return mut.try_lock();
}
template<class TimePoint>
inline bool winapi_mutex::timed_lock(const TimePoint &abs_time)
{
sync_handles &handles =
windows_intermodule_singleton<sync_handles>::get();
//This can throw
winapi_mutex_functions mut(handles.obtain_mutex(this->id_, this));
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_, this));
return mut.unlock();
}
} //namespace ipcdetail {
} //namespace interprocess {
} //namespace boost {
#include <boost/interprocess/detail/config_end.hpp>
#endif //BOOST_INTERPROCESS_DETAIL_WINDOWS_MUTEX_HPP
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