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// 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) // (C) Copyright 2007 Anthony Williams // (C) Copyright 2011-2012 Vicente J. Botet Escriba #ifndef BOOST_THREAD_LOCK_GUARD_HPP #define BOOST_THREAD_LOCK_GUARD_HPP #include <boost/thread/detail/config.hpp> #include <boost/thread/detail/delete.hpp> #include <boost/thread/detail/move.hpp> #include <boost/thread/detail/lockable_wrapper.hpp> #include <boost/thread/lock_options.hpp> #if ! defined BOOST_THREAD_PROVIDES_NESTED_LOCKS #include <boost/thread/is_locked_by_this_thread.hpp> #include <boost/assert.hpp> #endif #include <boost/config/abi_prefix.hpp> namespace boost { template <typename Mutex> class lock_guard { private: Mutex& m; public: typedef Mutex mutex_type; BOOST_THREAD_NO_COPYABLE( lock_guard ) explicit lock_guard(Mutex& m_) : m(m_) { m.lock(); } lock_guard(Mutex& m_, adopt_lock_t) : m(m_) { #if ! defined BOOST_THREAD_PROVIDES_NESTED_LOCKS BOOST_ASSERT(is_locked_by_this_thread(m)); #endif } #if ! defined BOOST_THREAD_NO_CXX11_HDR_INITIALIZER_LIST lock_guard(std::initializer_list<thread_detail::lockable_wrapper<Mutex> > l_) : m(*(const_cast<thread_detail::lockable_wrapper<Mutex>*>(l_.begin())->m)) { m.lock(); } lock_guard(std::initializer_list<thread_detail::lockable_adopt_wrapper<Mutex> > l_) : m(*(const_cast<thread_detail::lockable_adopt_wrapper<Mutex>*>(l_.begin())->m)) { #if ! defined BOOST_THREAD_PROVIDES_NESTED_LOCKS BOOST_ASSERT(is_locked_by_this_thread(m)); #endif } #endif ~lock_guard() { m.unlock(); } }; #if ! defined BOOST_THREAD_NO_MAKE_LOCK_GUARD template <typename Lockable> lock_guard<Lockable> make_lock_guard(Lockable& mtx) { return { thread_detail::lockable_wrapper<Lockable>(mtx) }; } template <typename Lockable> lock_guard<Lockable> make_lock_guard(Lockable& mtx, adopt_lock_t) { return { thread_detail::lockable_adopt_wrapper<Lockable>(mtx) }; } #endif } #include <boost/config/abi_suffix.hpp> #endif