102 lines
2.3 KiB
C++
102 lines
2.3 KiB
C++
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//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2012-2012. 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_LOCKS_HPP
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#define BOOST_INTERPROCESS_DETAIL_LOCKS_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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namespace boost {
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namespace interprocess {
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namespace ipcdetail {
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template<class Lock>
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class internal_mutex_lock
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{
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typedef void (internal_mutex_lock::*unspecified_bool_type)();
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public:
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typedef typename Lock::mutex_type::internal_mutex_type mutex_type;
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internal_mutex_lock(Lock &l)
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: l_(l)
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{}
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mutex_type* mutex() const
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{ return l_ ? &l_.mutex()->internal_mutex() : 0; }
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void lock() { l_.lock(); }
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void unlock() { l_.unlock(); }
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operator unspecified_bool_type() const
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{ return l_ ? &internal_mutex_lock::lock : 0; }
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private:
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Lock &l_;
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};
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template <class Lock>
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class lock_inverter
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{
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Lock &l_;
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public:
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lock_inverter(Lock &l)
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: l_(l)
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{}
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void lock() { l_.unlock(); }
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void unlock() { l_.lock(); }
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};
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template <class Lock>
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class lock_to_sharable
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{
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Lock &l_;
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public:
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explicit lock_to_sharable(Lock &l)
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: l_(l)
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{}
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void lock() { l_.lock_sharable(); }
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bool try_lock(){ return l_.try_lock_sharable(); }
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void unlock() { l_.unlock_sharable(); }
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};
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template <class Lock>
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class lock_to_wait
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{
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Lock &l_;
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public:
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explicit lock_to_wait(Lock &l)
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: l_(l)
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{}
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void lock() { l_.wait(); }
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bool try_lock(){ return l_.try_wait(); }
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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_LOCKS_HPP
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