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89 lines
2.2 KiB
C++
89 lines
2.2 KiB
C++
// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// (C) Copyright 2007 Anthony Williams
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// (C) Copyright 2011-2012 Vicente J. Botet Escriba
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#ifndef BOOST_THREAD_LOCK_GUARD_HPP
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#define BOOST_THREAD_LOCK_GUARD_HPP
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#include <boost/thread/detail/config.hpp>
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#include <boost/thread/detail/delete.hpp>
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#include <boost/thread/detail/move.hpp>
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#include <boost/thread/detail/lockable_wrapper.hpp>
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#include <boost/thread/lock_options.hpp>
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#if ! defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
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#include <boost/thread/is_locked_by_this_thread.hpp>
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#include <boost/assert.hpp>
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#endif
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#include <boost/config/abi_prefix.hpp>
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namespace boost
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{
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template <typename Mutex>
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class lock_guard
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{
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private:
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Mutex& m;
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public:
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typedef Mutex mutex_type;
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BOOST_THREAD_NO_COPYABLE( lock_guard )
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explicit lock_guard(Mutex& m_) :
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m(m_)
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{
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m.lock();
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}
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lock_guard(Mutex& m_, adopt_lock_t) :
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m(m_)
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{
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#if ! defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
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BOOST_ASSERT(is_locked_by_this_thread(m));
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#endif
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}
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#if ! defined BOOST_THREAD_NO_CXX11_HDR_INITIALIZER_LIST
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lock_guard(std::initializer_list<thread_detail::lockable_wrapper<Mutex> > l_) :
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m(*(const_cast<thread_detail::lockable_wrapper<Mutex>*>(l_.begin())->m))
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{
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m.lock();
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}
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lock_guard(std::initializer_list<thread_detail::lockable_adopt_wrapper<Mutex> > l_) :
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m(*(const_cast<thread_detail::lockable_adopt_wrapper<Mutex>*>(l_.begin())->m))
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{
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#if ! defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
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BOOST_ASSERT(is_locked_by_this_thread(m));
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#endif
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}
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#endif
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~lock_guard()
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{
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m.unlock();
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}
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};
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#if ! defined BOOST_THREAD_NO_MAKE_LOCK_GUARD
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template <typename Lockable>
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lock_guard<Lockable> make_lock_guard(Lockable& mtx)
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{
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return { thread_detail::lockable_wrapper<Lockable>(mtx) };
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}
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template <typename Lockable>
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lock_guard<Lockable> make_lock_guard(Lockable& mtx, adopt_lock_t)
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{
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return { thread_detail::lockable_adopt_wrapper<Lockable>(mtx) };
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}
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#endif
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}
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#include <boost/config/abi_suffix.hpp>
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#endif
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