diff -r 820b22e13ff1 -r 39c28ec933dd imgtools/imglib/boostlibrary/boost/thread/locks.hpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/boostlibrary/boost/thread/locks.hpp	Mon May 10 19:54:49 2010 +0100
@@ -0,0 +1,1430 @@
+// 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
+#ifndef BOOST_THREAD_LOCKS_HPP
+#define BOOST_THREAD_LOCKS_HPP
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/exceptions.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <algorithm>
+#include <iterator>
+#include <boost/thread/thread_time.hpp>
+#include <boost/detail/workaround.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+    struct xtime;
+
+#if defined(BOOST_NO_SFINAE) ||                           \
+    BOOST_WORKAROUND(__IBMCPP__, BOOST_TESTED_AT(600)) || \
+    BOOST_WORKAROUND(__SUNPRO_CC, BOOST_TESTED_AT(0x590))
+#define BOOST_THREAD_NO_AUTO_DETECT_MUTEX_TYPES
+#endif
+
+#ifndef BOOST_THREAD_NO_AUTO_DETECT_MUTEX_TYPES
+    namespace detail
+    {
+        template<typename T>
+        struct has_member_lock
+        {
+            typedef char true_type;
+            struct false_type
+            {
+                true_type dummy[2];
+            };
+            
+            template<typename U>
+            static true_type has_member(U*,void (U::*dummy)()=&U::lock);
+            static false_type has_member(void*);
+            
+            BOOST_STATIC_CONSTANT(bool, value=sizeof(has_member_lock<T>::has_member((T*)NULL))==sizeof(true_type));
+        };
+
+        template<typename T>
+        struct has_member_unlock
+        {
+            typedef char true_type;
+            struct false_type
+            {
+                true_type dummy[2];
+            };
+            
+            template<typename U>
+            static true_type has_member(U*,void (U::*dummy)()=&U::unlock);
+            static false_type has_member(void*);
+            
+            BOOST_STATIC_CONSTANT(bool, value=sizeof(has_member_unlock<T>::has_member((T*)NULL))==sizeof(true_type));
+        };
+        
+        template<typename T>
+        struct has_member_try_lock
+        {
+            typedef char true_type;
+            struct false_type
+            {
+                true_type dummy[2];
+            };
+            
+            template<typename U>
+            static true_type has_member(U*,bool (U::*dummy)()=&U::try_lock);
+            static false_type has_member(void*);
+            
+            BOOST_STATIC_CONSTANT(bool, value=sizeof(has_member_try_lock<T>::has_member((T*)NULL))==sizeof(true_type));
+        };
+
+    }
+    
+
+    template<typename T>
+    struct is_mutex_type
+    {
+        BOOST_STATIC_CONSTANT(bool, value = detail::has_member_lock<T>::value &&
+                              detail::has_member_unlock<T>::value &&
+                              detail::has_member_try_lock<T>::value);
+        
+    };
+#else
+    template<typename T>
+    struct is_mutex_type
+    {
+        BOOST_STATIC_CONSTANT(bool, value = false);
+    };
+#endif    
+
+    struct defer_lock_t
+    {};
+    struct try_to_lock_t
+    {};
+    struct adopt_lock_t
+    {};
+    
+    const defer_lock_t defer_lock={};
+    const try_to_lock_t try_to_lock={};
+    const adopt_lock_t adopt_lock={};
+
+    template<typename Mutex>
+    class shared_lock;
+
+    template<typename Mutex>
+    class upgrade_lock;
+
+    template<typename Mutex>
+    class unique_lock;
+
+    namespace detail
+    {
+        template<typename Mutex>
+        class try_lock_wrapper;
+    }
+    
+#ifdef BOOST_THREAD_NO_AUTO_DETECT_MUTEX_TYPES
+    template<typename T>
+    struct is_mutex_type<unique_lock<T> >
+    {
+        BOOST_STATIC_CONSTANT(bool, value = true);
+    };
+
+    template<typename T>
+    struct is_mutex_type<shared_lock<T> >
+    {
+        BOOST_STATIC_CONSTANT(bool, value = true);
+    };
+
+    template<typename T>
+    struct is_mutex_type<upgrade_lock<T> >
+    {
+        BOOST_STATIC_CONSTANT(bool, value = true);
+    };
+    
+    template<typename T>
+    struct is_mutex_type<detail::try_lock_wrapper<T> >
+    {
+        BOOST_STATIC_CONSTANT(bool, value = true);
+    };
+
+    class mutex;
+    class timed_mutex;
+    class recursive_mutex;
+    class recursive_timed_mutex;
+    class shared_mutex;
+    
+    template<>
+    struct is_mutex_type<mutex>
+    {
+        BOOST_STATIC_CONSTANT(bool, value = true);
+    };
+    template<>
+    struct is_mutex_type<timed_mutex>
+    {
+        BOOST_STATIC_CONSTANT(bool, value = true);
+    };
+    template<>
+    struct is_mutex_type<recursive_mutex>
+    {
+        BOOST_STATIC_CONSTANT(bool, value = true);
+    };
+    template<>
+    struct is_mutex_type<recursive_timed_mutex>
+    {
+        BOOST_STATIC_CONSTANT(bool, value = true);
+    };
+    template<>
+    struct is_mutex_type<shared_mutex>
+    {
+        BOOST_STATIC_CONSTANT(bool, value = true);
+    };
+
+#endif
+
+    template<typename Mutex>
+    class lock_guard
+    {
+    private:
+        Mutex& m;
+
+        explicit lock_guard(lock_guard&);
+        lock_guard& operator=(lock_guard&);
+    public:
+        explicit lock_guard(Mutex& m_):
+            m(m_)
+        {
+            m.lock();
+        }
+        lock_guard(Mutex& m_,adopt_lock_t):
+            m(m_)
+        {}
+        ~lock_guard()
+        {
+            m.unlock();
+        }
+    };
+
+
+    template<typename Mutex>
+    class unique_lock
+    {
+    private:
+        Mutex* m;
+        bool is_locked;
+        unique_lock(unique_lock&);
+        explicit unique_lock(upgrade_lock<Mutex>&);
+        unique_lock& operator=(unique_lock&);
+        unique_lock& operator=(upgrade_lock<Mutex>& other);
+    public:
+        unique_lock():
+            m(0),is_locked(false)
+        {}
+        
+        explicit unique_lock(Mutex& m_):
+            m(&m_),is_locked(false)
+        {
+            lock();
+        }
+        unique_lock(Mutex& m_,adopt_lock_t):
+            m(&m_),is_locked(true)
+        {}
+        unique_lock(Mutex& m_,defer_lock_t):
+            m(&m_),is_locked(false)
+        {}
+        unique_lock(Mutex& m_,try_to_lock_t):
+            m(&m_),is_locked(false)
+        {
+            try_lock();
+        }
+        template<typename TimeDuration>
+        unique_lock(Mutex& m_,TimeDuration const& target_time):
+            m(&m_),is_locked(false)
+        {
+            timed_lock(target_time);
+        }
+        unique_lock(Mutex& m_,system_time const& target_time):
+            m(&m_),is_locked(false)
+        {
+            timed_lock(target_time);
+        }
+#ifdef BOOST_HAS_RVALUE_REFS
+        unique_lock(unique_lock&& other):
+            m(other.m),is_locked(other.is_locked)
+        {
+            other.is_locked=false;
+            other.m=0;
+        }
+        explicit unique_lock(upgrade_lock<Mutex>&& other);
+
+        unique_lock<Mutex>&& move()
+        {
+            return static_cast<unique_lock<Mutex>&&>(*this);
+        }
+
+
+        unique_lock& operator=(unique_lock<Mutex>&& other)
+        {
+            unique_lock temp(other);
+            swap(temp);
+            return *this;
+        }
+
+        unique_lock& operator=(upgrade_lock<Mutex>&& other)
+        {
+            unique_lock temp(other);
+            swap(temp);
+            return *this;
+        }
+        void swap(unique_lock&& other)
+        {
+            std::swap(m,other.m);
+            std::swap(is_locked,other.is_locked);
+        }
+#else
+        unique_lock(detail::thread_move_t<unique_lock<Mutex> > other):
+            m(other->m),is_locked(other->is_locked)
+        {
+            other->is_locked=false;
+            other->m=0;
+        }
+        unique_lock(detail::thread_move_t<upgrade_lock<Mutex> > other);
+
+        operator detail::thread_move_t<unique_lock<Mutex> >()
+        {
+            return move();
+        }
+
+        detail::thread_move_t<unique_lock<Mutex> > move()
+        {
+            return detail::thread_move_t<unique_lock<Mutex> >(*this);
+        }
+
+        unique_lock& operator=(detail::thread_move_t<unique_lock<Mutex> > other)
+        {
+            unique_lock temp(other);
+            swap(temp);
+            return *this;
+        }
+
+        unique_lock& operator=(detail::thread_move_t<upgrade_lock<Mutex> > other)
+        {
+            unique_lock temp(other);
+            swap(temp);
+            return *this;
+        }
+        void swap(unique_lock& other)
+        {
+            std::swap(m,other.m);
+            std::swap(is_locked,other.is_locked);
+        }
+        void swap(detail::thread_move_t<unique_lock<Mutex> > other)
+        {
+            std::swap(m,other->m);
+            std::swap(is_locked,other->is_locked);
+        }
+#endif
+        
+        ~unique_lock()
+        {
+            if(owns_lock())
+            {
+                m->unlock();
+            }
+        }
+        void lock()
+        {
+            if(owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            m->lock();
+            is_locked=true;
+        }
+        bool try_lock()
+        {
+            if(owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            is_locked=m->try_lock();
+            return is_locked;
+        }
+        template<typename TimeDuration>
+        bool timed_lock(TimeDuration const& relative_time)
+        {
+            is_locked=m->timed_lock(relative_time);
+            return is_locked;
+        }
+        
+        bool timed_lock(::boost::system_time const& absolute_time)
+        {
+            is_locked=m->timed_lock(absolute_time);
+            return is_locked;
+        }
+        bool timed_lock(::boost::xtime const& absolute_time)
+        {
+            is_locked=m->timed_lock(absolute_time);
+            return is_locked;
+        }
+        void unlock()
+        {
+            if(!owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            m->unlock();
+            is_locked=false;
+        }
+            
+        typedef void (unique_lock::*bool_type)();
+        operator bool_type() const
+        {
+            return is_locked?&unique_lock::lock:0;
+        }
+        bool operator!() const
+        {
+            return !owns_lock();
+        }
+        bool owns_lock() const
+        {
+            return is_locked;
+        }
+
+        Mutex* mutex() const
+        {
+            return m;
+        }
+
+        Mutex* release()
+        {
+            Mutex* const res=m;
+            m=0;
+            is_locked=false;
+            return res;
+        }
+
+        friend class shared_lock<Mutex>;
+        friend class upgrade_lock<Mutex>;
+    };
+
+#ifdef BOOST_HAS_RVALUE_REFS
+    template<typename Mutex>
+    void swap(unique_lock<Mutex>&& lhs,unique_lock<Mutex>&& rhs)
+    {
+        lhs.swap(rhs);
+    }
+#else
+    template<typename Mutex>
+    void swap(unique_lock<Mutex>& lhs,unique_lock<Mutex>& rhs)
+    {
+        lhs.swap(rhs);
+    }
+#endif
+
+#ifdef BOOST_HAS_RVALUE_REFS
+    template<typename Mutex>
+    inline unique_lock<Mutex>&& move(unique_lock<Mutex>&& ul)
+    {
+        return ul;
+    }
+#endif
+
+    template<typename Mutex>
+    class shared_lock
+    {
+    protected:
+        Mutex* m;
+        bool is_locked;
+    private:
+        explicit shared_lock(shared_lock&);
+        shared_lock& operator=(shared_lock&);
+    public:
+        shared_lock():
+            m(0),is_locked(false)
+        {}
+        
+        explicit shared_lock(Mutex& m_):
+            m(&m_),is_locked(false)
+        {
+            lock();
+        }
+        shared_lock(Mutex& m_,adopt_lock_t):
+            m(&m_),is_locked(true)
+        {}
+        shared_lock(Mutex& m_,defer_lock_t):
+            m(&m_),is_locked(false)
+        {}
+        shared_lock(Mutex& m_,try_to_lock_t):
+            m(&m_),is_locked(false)
+        {
+            try_lock();
+        }
+        shared_lock(Mutex& m_,system_time const& target_time):
+            m(&m_),is_locked(false)
+        {
+            timed_lock(target_time);
+        }
+
+        shared_lock(detail::thread_move_t<shared_lock<Mutex> > other):
+            m(other->m),is_locked(other->is_locked)
+        {
+            other->is_locked=false;
+            other->m=0;
+        }
+
+        shared_lock(detail::thread_move_t<unique_lock<Mutex> > other):
+            m(other->m),is_locked(other->is_locked)
+        {
+            if(is_locked)
+            {
+                m->unlock_and_lock_shared();
+            }
+            other->is_locked=false;
+            other->m=0;
+        }
+
+        shared_lock(detail::thread_move_t<upgrade_lock<Mutex> > other):
+            m(other->m),is_locked(other->is_locked)
+        {
+            if(is_locked)
+            {
+                m->unlock_upgrade_and_lock_shared();
+            }
+            other->is_locked=false;
+            other->m=0;
+        }
+
+        operator detail::thread_move_t<shared_lock<Mutex> >()
+        {
+            return move();
+        }
+
+        detail::thread_move_t<shared_lock<Mutex> > move()
+        {
+            return detail::thread_move_t<shared_lock<Mutex> >(*this);
+        }
+
+
+        shared_lock& operator=(detail::thread_move_t<shared_lock<Mutex> > other)
+        {
+            shared_lock temp(other);
+            swap(temp);
+            return *this;
+        }
+
+        shared_lock& operator=(detail::thread_move_t<unique_lock<Mutex> > other)
+        {
+            shared_lock temp(other);
+            swap(temp);
+            return *this;
+        }
+
+        shared_lock& operator=(detail::thread_move_t<upgrade_lock<Mutex> > other)
+        {
+            shared_lock temp(other);
+            swap(temp);
+            return *this;
+        }
+
+#ifdef BOOST_HAS_RVALUE_REFS
+        void swap(shared_lock&& other)
+        {
+            std::swap(m,other.m);
+            std::swap(is_locked,other.is_locked);
+        }
+#else
+        void swap(shared_lock& other)
+        {
+            std::swap(m,other.m);
+            std::swap(is_locked,other.is_locked);
+        }
+        void swap(boost::detail::thread_move_t<shared_lock<Mutex> > other)
+        {
+            std::swap(m,other->m);
+            std::swap(is_locked,other->is_locked);
+        }
+#endif
+
+        Mutex* mutex() const
+        {
+            return m;
+        }
+        
+        ~shared_lock()
+        {
+            if(owns_lock())
+            {
+                m->unlock_shared();
+            }
+        }
+        void lock()
+        {
+            if(owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            m->lock_shared();
+            is_locked=true;
+        }
+        bool try_lock()
+        {
+            if(owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            is_locked=m->try_lock_shared();
+            return is_locked;
+        }
+        bool timed_lock(boost::system_time const& target_time)
+        {
+            if(owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            is_locked=m->timed_lock_shared(target_time);
+            return is_locked;
+        }
+        template<typename Duration>
+        bool timed_lock(Duration const& target_time)
+        {
+            if(owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            is_locked=m->timed_lock_shared(target_time);
+            return is_locked;
+        }
+        void unlock()
+        {
+            if(!owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            m->unlock_shared();
+            is_locked=false;
+        }
+            
+        typedef void (shared_lock<Mutex>::*bool_type)();
+        operator bool_type() const
+        {
+            return is_locked?&shared_lock::lock:0;
+        }
+        bool operator!() const
+        {
+            return !owns_lock();
+        }
+        bool owns_lock() const
+        {
+            return is_locked;
+        }
+
+    };
+
+#ifdef BOOST_HAS_RVALUE_REFS
+    template<typename Mutex>
+    void swap(shared_lock<Mutex>&& lhs,shared_lock<Mutex>&& rhs)
+    {
+        lhs.swap(rhs);
+    }
+#else
+    template<typename Mutex>
+    void swap(shared_lock<Mutex>& lhs,shared_lock<Mutex>& rhs)
+    {
+        lhs.swap(rhs);
+    }
+#endif
+
+    template<typename Mutex>
+    class upgrade_lock
+    {
+    protected:
+        Mutex* m;
+        bool is_locked;
+    private:
+        explicit upgrade_lock(upgrade_lock&);
+        upgrade_lock& operator=(upgrade_lock&);
+    public:
+        upgrade_lock():
+            m(0),is_locked(false)
+        {}
+        
+        explicit upgrade_lock(Mutex& m_):
+            m(&m_),is_locked(false)
+        {
+            lock();
+        }
+        upgrade_lock(Mutex& m_,adopt_lock_t):
+            m(&m_),is_locked(true)
+        {}
+        upgrade_lock(Mutex& m_,defer_lock_t):
+            m(&m_),is_locked(false)
+        {}
+        upgrade_lock(Mutex& m_,try_to_lock_t):
+            m(&m_),is_locked(false)
+        {
+            try_lock();
+        }
+        upgrade_lock(detail::thread_move_t<upgrade_lock<Mutex> > other):
+            m(other->m),is_locked(other->is_locked)
+        {
+            other->is_locked=false;
+            other->m=0;
+        }
+
+        upgrade_lock(detail::thread_move_t<unique_lock<Mutex> > other):
+            m(other->m),is_locked(other->is_locked)
+        {
+            if(is_locked)
+            {
+                m->unlock_and_lock_upgrade();
+            }
+            other->is_locked=false;
+            other->m=0;
+        }
+
+        operator detail::thread_move_t<upgrade_lock<Mutex> >()
+        {
+            return move();
+        }
+
+        detail::thread_move_t<upgrade_lock<Mutex> > move()
+        {
+            return detail::thread_move_t<upgrade_lock<Mutex> >(*this);
+        }
+
+
+        upgrade_lock& operator=(detail::thread_move_t<upgrade_lock<Mutex> > other)
+        {
+            upgrade_lock temp(other);
+            swap(temp);
+            return *this;
+        }
+
+        upgrade_lock& operator=(detail::thread_move_t<unique_lock<Mutex> > other)
+        {
+            upgrade_lock temp(other);
+            swap(temp);
+            return *this;
+        }
+
+        void swap(upgrade_lock& other)
+        {
+            std::swap(m,other.m);
+            std::swap(is_locked,other.is_locked);
+        }
+        
+        ~upgrade_lock()
+        {
+            if(owns_lock())
+            {
+                m->unlock_upgrade();
+            }
+        }
+        void lock()
+        {
+            if(owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            m->lock_upgrade();
+            is_locked=true;
+        }
+        bool try_lock()
+        {
+            if(owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            is_locked=m->try_lock_upgrade();
+            return is_locked;
+        }
+        void unlock()
+        {
+            if(!owns_lock())
+            {
+                throw boost::lock_error();
+            }
+            m->unlock_upgrade();
+            is_locked=false;
+        }
+            
+        typedef void (upgrade_lock::*bool_type)();
+        operator bool_type() const
+        {
+            return is_locked?&upgrade_lock::lock:0;
+        }
+        bool operator!() const
+        {
+            return !owns_lock();
+        }
+        bool owns_lock() const
+        {
+            return is_locked;
+        }
+        friend class shared_lock<Mutex>;
+        friend class unique_lock<Mutex>;
+    };
+
+
+#ifdef BOOST_HAS_RVALUE_REFS
+    template<typename Mutex>
+    unique_lock<Mutex>::unique_lock(upgrade_lock<Mutex>&& other):
+        m(other.m),is_locked(other.is_locked)
+    {
+        other.is_locked=false;
+        if(is_locked)
+        {
+            m.unlock_upgrade_and_lock();
+        }
+    }
+#else
+    template<typename Mutex>
+    unique_lock<Mutex>::unique_lock(detail::thread_move_t<upgrade_lock<Mutex> > other):
+        m(other->m),is_locked(other->is_locked)
+    {
+        other->is_locked=false;
+        if(is_locked)
+        {
+            m->unlock_upgrade_and_lock();
+        }
+    }
+#endif
+    template <class Mutex>
+    class upgrade_to_unique_lock
+    {
+    private:
+        upgrade_lock<Mutex>* source;
+        unique_lock<Mutex> exclusive;
+
+        explicit upgrade_to_unique_lock(upgrade_to_unique_lock&);
+        upgrade_to_unique_lock& operator=(upgrade_to_unique_lock&);
+    public:
+        explicit upgrade_to_unique_lock(upgrade_lock<Mutex>& m_):
+            source(&m_),exclusive(move(*source))
+        {}
+        ~upgrade_to_unique_lock()
+        {
+            if(source)
+            {
+                *source=move(exclusive);
+            }
+        }
+
+        upgrade_to_unique_lock(detail::thread_move_t<upgrade_to_unique_lock<Mutex> > other):
+            source(other->source),exclusive(move(other->exclusive))
+        {
+            other->source=0;
+        }
+        
+        upgrade_to_unique_lock& operator=(detail::thread_move_t<upgrade_to_unique_lock<Mutex> > other)
+        {
+            upgrade_to_unique_lock temp(other);
+            swap(temp);
+            return *this;
+        }
+        void swap(upgrade_to_unique_lock& other)
+        {
+            std::swap(source,other.source);
+            exclusive.swap(other.exclusive);
+        }
+        typedef void (upgrade_to_unique_lock::*bool_type)(upgrade_to_unique_lock&);
+        operator bool_type() const
+        {
+            return exclusive.owns_lock()?&upgrade_to_unique_lock::swap:0;
+        }
+        bool operator!() const
+        {
+            return !owns_lock();
+        }
+        bool owns_lock() const
+        {
+            return exclusive.owns_lock();
+        }
+    };
+
+    namespace detail
+    {
+        template<typename Mutex>
+        class try_lock_wrapper:
+            private unique_lock<Mutex>
+        {
+            typedef unique_lock<Mutex> base;
+        public:
+            try_lock_wrapper()
+            {}
+            
+            explicit try_lock_wrapper(Mutex& m):
+                base(m,try_to_lock)
+            {}
+
+            try_lock_wrapper(Mutex& m_,adopt_lock_t):
+                base(m_,adopt_lock)
+            {}
+            try_lock_wrapper(Mutex& m_,defer_lock_t):
+                base(m_,defer_lock)
+            {}
+            try_lock_wrapper(Mutex& m_,try_to_lock_t):
+                base(m_,try_to_lock)
+            {}
+            try_lock_wrapper(detail::thread_move_t<try_lock_wrapper<Mutex> > other):
+                base(detail::thread_move_t<base>(*other))
+            {}
+
+            operator detail::thread_move_t<try_lock_wrapper<Mutex> >()
+            {
+                return move();
+            }
+
+            detail::thread_move_t<try_lock_wrapper<Mutex> > move()
+            {
+                return detail::thread_move_t<try_lock_wrapper<Mutex> >(*this);
+            }
+
+            try_lock_wrapper& operator=(detail::thread_move_t<try_lock_wrapper<Mutex> > other)
+            {
+                try_lock_wrapper temp(other);
+                swap(temp);
+                return *this;
+            }
+
+#ifdef BOOST_HAS_RVALUE_REFS
+            void swap(try_lock_wrapper&& other)
+            {
+                base::swap(other);
+            }
+#else
+            void swap(try_lock_wrapper& other)
+            {
+                base::swap(other);
+            }
+            void swap(detail::thread_move_t<try_lock_wrapper<Mutex> > other)
+            {
+                base::swap(*other);
+            }
+#endif
+
+            void lock()
+            {
+                base::lock();
+            }
+            bool try_lock()
+            {
+                return base::try_lock();
+            }
+            void unlock()
+            {
+                base::unlock();
+            }
+            bool owns_lock() const
+            {
+                return base::owns_lock();
+            }
+            Mutex* mutex() const
+            {
+                return base::mutex();
+            }
+            Mutex* release()
+            {
+                return base::release();
+            }
+            bool operator!() const
+            {
+                return !this->owns_lock();
+            }
+
+            typedef typename base::bool_type bool_type;
+            operator bool_type() const
+            {
+                return base::operator bool_type();
+            }
+        };
+
+#ifdef BOOST_HAS_RVALUE_REFS
+        template<typename Mutex>
+        void swap(try_lock_wrapper<Mutex>&& lhs,try_lock_wrapper<Mutex>&& rhs)
+        {
+            lhs.swap(rhs);
+        }
+#else
+        template<typename Mutex>
+        void swap(try_lock_wrapper<Mutex>& lhs,try_lock_wrapper<Mutex>& rhs)
+        {
+            lhs.swap(rhs);
+        }
+#endif
+        
+        template<typename MutexType1,typename MutexType2>
+        unsigned try_lock_internal(MutexType1& m1,MutexType2& m2)
+        {
+            boost::unique_lock<MutexType1> l1(m1,boost::try_to_lock);
+            if(!l1)
+            {
+                return 1;
+            }
+            if(!m2.try_lock())
+            {
+                return 2;
+            }
+            l1.release();
+            return 0;
+        }
+
+        template<typename MutexType1,typename MutexType2,typename MutexType3>
+        unsigned try_lock_internal(MutexType1& m1,MutexType2& m2,MutexType3& m3)
+        {
+            boost::unique_lock<MutexType1> l1(m1,boost::try_to_lock);
+            if(!l1)
+            {
+                return 1;
+            }
+            if(unsigned const failed_lock=try_lock_internal(m2,m3))
+            {
+                return failed_lock+1;
+            }
+            l1.release();
+            return 0;
+        }
+
+
+        template<typename MutexType1,typename MutexType2,typename MutexType3,
+                 typename MutexType4>
+        unsigned try_lock_internal(MutexType1& m1,MutexType2& m2,MutexType3& m3,
+                                   MutexType4& m4)
+        {
+            boost::unique_lock<MutexType1> l1(m1,boost::try_to_lock);
+            if(!l1)
+            {
+                return 1;
+            }
+            if(unsigned const failed_lock=try_lock_internal(m2,m3,m4))
+            {
+                return failed_lock+1;
+            }
+            l1.release();
+            return 0;
+        }
+
+        template<typename MutexType1,typename MutexType2,typename MutexType3,
+                 typename MutexType4,typename MutexType5>
+        unsigned try_lock_internal(MutexType1& m1,MutexType2& m2,MutexType3& m3,
+                                   MutexType4& m4,MutexType5& m5)
+        {
+            boost::unique_lock<MutexType1> l1(m1,boost::try_to_lock);
+            if(!l1)
+            {
+                return 1;
+            }
+            if(unsigned const failed_lock=try_lock_internal(m2,m3,m4,m5))
+            {
+                return failed_lock+1;
+            }
+            l1.release();
+            return 0;
+        }
+
+
+        template<typename MutexType1,typename MutexType2>
+        unsigned lock_helper(MutexType1& m1,MutexType2& m2)
+        {
+            boost::unique_lock<MutexType1> l1(m1);
+            if(!m2.try_lock())
+            {
+                return 1;
+            }
+            l1.release();
+            return 0;
+        }
+
+        template<typename MutexType1,typename MutexType2,typename MutexType3>
+        unsigned lock_helper(MutexType1& m1,MutexType2& m2,MutexType3& m3)
+        {
+            boost::unique_lock<MutexType1> l1(m1);
+            if(unsigned const failed_lock=try_lock_internal(m2,m3))
+            {
+                return failed_lock;
+            }
+            l1.release();
+            return 0;
+        }
+
+        template<typename MutexType1,typename MutexType2,typename MutexType3,
+                 typename MutexType4>
+        unsigned lock_helper(MutexType1& m1,MutexType2& m2,MutexType3& m3,
+                             MutexType4& m4)
+        {
+            boost::unique_lock<MutexType1> l1(m1);
+            if(unsigned const failed_lock=try_lock_internal(m2,m3,m4))
+            {
+                return failed_lock;
+            }
+            l1.release();
+            return 0;
+        }
+
+        template<typename MutexType1,typename MutexType2,typename MutexType3,
+                 typename MutexType4,typename MutexType5>
+        unsigned lock_helper(MutexType1& m1,MutexType2& m2,MutexType3& m3,
+                             MutexType4& m4,MutexType5& m5)
+        {
+            boost::unique_lock<MutexType1> l1(m1);
+            if(unsigned const failed_lock=try_lock_internal(m2,m3,m4,m5))
+            {
+                return failed_lock;
+            }
+            l1.release();
+            return 0;
+        }
+    }
+
+    namespace detail
+    {
+        template<bool x>
+        struct is_mutex_type_wrapper
+        {};
+        
+        template<typename MutexType1,typename MutexType2>
+        void lock_impl(MutexType1& m1,MutexType2& m2,is_mutex_type_wrapper<true>)
+        {
+            unsigned const lock_count=2;
+            unsigned lock_first=0;
+            while(true)
+            {
+                switch(lock_first)
+                {
+                case 0:
+                    lock_first=detail::lock_helper(m1,m2);
+                    if(!lock_first)
+                        return;
+                    break;
+                case 1:
+                    lock_first=detail::lock_helper(m2,m1);
+                    if(!lock_first)
+                        return;
+                    lock_first=(lock_first+1)%lock_count;
+                    break;
+                }
+            }
+        }
+
+        template<typename Iterator>
+        void lock_impl(Iterator begin,Iterator end,is_mutex_type_wrapper<false>);
+    }
+    
+
+    template<typename MutexType1,typename MutexType2>
+    void lock(MutexType1& m1,MutexType2& m2)
+    {
+        detail::lock_impl(m1,m2,detail::is_mutex_type_wrapper<is_mutex_type<MutexType1>::value>());
+    }
+
+    template<typename MutexType1,typename MutexType2>
+    void lock(const MutexType1& m1,MutexType2& m2)
+    {
+        detail::lock_impl(m1,m2,detail::is_mutex_type_wrapper<is_mutex_type<MutexType1>::value>());
+    }
+
+    template<typename MutexType1,typename MutexType2>
+    void lock(MutexType1& m1,const MutexType2& m2)
+    {
+        detail::lock_impl(m1,m2,detail::is_mutex_type_wrapper<is_mutex_type<MutexType1>::value>());
+    }
+
+    template<typename MutexType1,typename MutexType2>
+    void lock(const MutexType1& m1,const MutexType2& m2)
+    {
+        detail::lock_impl(m1,m2,detail::is_mutex_type_wrapper<is_mutex_type<MutexType1>::value>());
+    }
+
+    template<typename MutexType1,typename MutexType2,typename MutexType3>
+    void lock(MutexType1& m1,MutexType2& m2,MutexType3& m3)
+    {
+        unsigned const lock_count=3;
+        unsigned lock_first=0;
+        while(true)
+        {
+            switch(lock_first)
+            {
+            case 0:
+                lock_first=detail::lock_helper(m1,m2,m3);
+                if(!lock_first)
+                    return;
+                break;
+            case 1:
+                lock_first=detail::lock_helper(m2,m3,m1);
+                if(!lock_first)
+                    return;
+                lock_first=(lock_first+1)%lock_count;
+                break;
+            case 2:
+                lock_first=detail::lock_helper(m3,m1,m2);
+                if(!lock_first)
+                    return;
+                lock_first=(lock_first+2)%lock_count;
+                break;
+            }
+        }
+    }
+
+    template<typename MutexType1,typename MutexType2,typename MutexType3,
+             typename MutexType4>
+    void lock(MutexType1& m1,MutexType2& m2,MutexType3& m3,
+              MutexType4& m4)
+    {
+        unsigned const lock_count=4;
+        unsigned lock_first=0;
+        while(true)
+        {
+            switch(lock_first)
+            {
+            case 0:
+                lock_first=detail::lock_helper(m1,m2,m3,m4);
+                if(!lock_first)
+                    return;
+                break;
+            case 1:
+                lock_first=detail::lock_helper(m2,m3,m4,m1);
+                if(!lock_first)
+                    return;
+                lock_first=(lock_first+1)%lock_count;
+                break;
+            case 2:
+                lock_first=detail::lock_helper(m3,m4,m1,m2);
+                if(!lock_first)
+                    return;
+                lock_first=(lock_first+2)%lock_count;
+                break;
+            case 3:
+                lock_first=detail::lock_helper(m4,m1,m2,m3);
+                if(!lock_first)
+                    return;
+                lock_first=(lock_first+3)%lock_count;
+                break;
+            }
+        }
+    }
+
+    template<typename MutexType1,typename MutexType2,typename MutexType3,
+             typename MutexType4,typename MutexType5>
+    void lock(MutexType1& m1,MutexType2& m2,MutexType3& m3,
+              MutexType4& m4,MutexType5& m5)
+    {
+        unsigned const lock_count=5;
+        unsigned lock_first=0;
+        while(true)
+        {
+            switch(lock_first)
+            {
+            case 0:
+                lock_first=detail::lock_helper(m1,m2,m3,m4,m5);
+                if(!lock_first)
+                    return;
+                break;
+            case 1:
+                lock_first=detail::lock_helper(m2,m3,m4,m5,m1);
+                if(!lock_first)
+                    return;
+                lock_first=(lock_first+1)%lock_count;
+                break;
+            case 2:
+                lock_first=detail::lock_helper(m3,m4,m5,m1,m2);
+                if(!lock_first)
+                    return;
+                lock_first=(lock_first+2)%lock_count;
+                break;
+            case 3:
+                lock_first=detail::lock_helper(m4,m5,m1,m2,m3);
+                if(!lock_first)
+                    return;
+                lock_first=(lock_first+3)%lock_count;
+                break;
+            case 4:
+                lock_first=detail::lock_helper(m5,m1,m2,m3,m4);
+                if(!lock_first)
+                    return;
+                lock_first=(lock_first+4)%lock_count;
+                break;
+            }
+        }
+    }
+
+    namespace detail
+    {
+        template<typename Mutex,bool x=is_mutex_type<Mutex>::value>
+        struct try_lock_impl_return
+        {
+            typedef int type;
+        };
+        
+        template<typename Iterator>
+        struct try_lock_impl_return<Iterator,false>
+        {
+            typedef Iterator type;
+        };
+
+        template<typename MutexType1,typename MutexType2>
+        int try_lock_impl(MutexType1& m1,MutexType2& m2,is_mutex_type_wrapper<true>)
+        {
+            return ((int)detail::try_lock_internal(m1,m2))-1;
+        }
+
+        template<typename Iterator>
+        Iterator try_lock_impl(Iterator begin,Iterator end,is_mutex_type_wrapper<false>);
+    }
+    
+    template<typename MutexType1,typename MutexType2>
+    typename detail::try_lock_impl_return<MutexType1>::type try_lock(MutexType1& m1,MutexType2& m2)
+    {
+        return detail::try_lock_impl(m1,m2,detail::is_mutex_type_wrapper<is_mutex_type<MutexType1>::value>());
+    }
+
+    template<typename MutexType1,typename MutexType2>
+    typename detail::try_lock_impl_return<MutexType1>::type try_lock(const MutexType1& m1,MutexType2& m2)
+    {
+        return detail::try_lock_impl(m1,m2,detail::is_mutex_type_wrapper<is_mutex_type<MutexType1>::value>());
+    }
+
+    template<typename MutexType1,typename MutexType2>
+    typename detail::try_lock_impl_return<MutexType1>::type try_lock(MutexType1& m1,const MutexType2& m2)
+    {
+        return detail::try_lock_impl(m1,m2,detail::is_mutex_type_wrapper<is_mutex_type<MutexType1>::value>());
+    }
+
+    template<typename MutexType1,typename MutexType2>
+    typename detail::try_lock_impl_return<MutexType1>::type try_lock(const MutexType1& m1,const MutexType2& m2)
+    {
+        return detail::try_lock_impl(m1,m2,detail::is_mutex_type_wrapper<is_mutex_type<MutexType1>::value>());
+    }
+
+    template<typename MutexType1,typename MutexType2,typename MutexType3>
+    int try_lock(MutexType1& m1,MutexType2& m2,MutexType3& m3)
+    {
+        return ((int)detail::try_lock_internal(m1,m2,m3))-1;
+    }
+
+    template<typename MutexType1,typename MutexType2,typename MutexType3,typename MutexType4>
+    int try_lock(MutexType1& m1,MutexType2& m2,MutexType3& m3,MutexType4& m4)
+    {
+        return ((int)detail::try_lock_internal(m1,m2,m3,m4))-1;
+    }
+
+    template<typename MutexType1,typename MutexType2,typename MutexType3,typename MutexType4,typename MutexType5>
+    int try_lock(MutexType1& m1,MutexType2& m2,MutexType3& m3,MutexType4& m4,MutexType5& m5)
+    {
+        return ((int)detail::try_lock_internal(m1,m2,m3,m4,m5))-1;
+    }
+    
+
+    namespace detail
+    {
+        template<typename Iterator>
+        struct range_lock_guard
+        {
+            Iterator begin;
+            Iterator end;
+            
+            range_lock_guard(Iterator begin_,Iterator end_):
+                begin(begin_),end(end_)
+            {
+                lock(begin,end);
+            }
+            
+            void release()
+            {
+                begin=end;
+            }
+
+            ~range_lock_guard()
+            {
+                for(;begin!=end;++begin)
+                {
+                    begin->unlock();
+                }
+            }
+        };
+
+        template<typename Iterator>
+        Iterator try_lock_impl(Iterator begin,Iterator end,is_mutex_type_wrapper<false>)
+
+        {
+            if(begin==end)
+            {
+                return end;
+            }
+            typedef typename std::iterator_traits<Iterator>::value_type lock_type;
+            unique_lock<lock_type> guard(*begin,try_to_lock);
+            
+            if(!guard.owns_lock())
+            {
+                return begin;
+            }
+            Iterator const failed=try_lock(++begin,end);
+            if(failed==end)
+            {
+                guard.release();
+            }
+            
+            return failed;
+        }
+    }
+    
+
+    namespace detail
+    {
+        template<typename Iterator>
+        void lock_impl(Iterator begin,Iterator end,is_mutex_type_wrapper<false>)
+        {
+            typedef typename std::iterator_traits<Iterator>::value_type lock_type;
+        
+            if(begin==end)
+            {
+                return;
+            }
+            bool start_with_begin=true;
+            Iterator second=begin;
+            ++second;
+            Iterator next=second;
+        
+            for(;;)
+            {
+                unique_lock<lock_type> begin_lock(*begin,defer_lock);
+                if(start_with_begin)
+                {
+                    begin_lock.lock();
+                    Iterator const failed_lock=try_lock(next,end);
+                    if(failed_lock==end)
+                    {
+                        begin_lock.release();
+                        return;
+                    }
+                    start_with_begin=false;
+                    next=failed_lock;
+                }
+                else
+                {
+                    detail::range_lock_guard<Iterator> guard(next,end);
+                    if(begin_lock.try_lock())
+                    {
+                        Iterator const failed_lock=try_lock(second,next);
+                        if(failed_lock==next)
+                        {
+                            begin_lock.release();
+                            guard.release();
+                            return;
+                        }
+                        start_with_begin=false;
+                        next=failed_lock;
+                    }
+                    else
+                    {
+                        start_with_begin=true;
+                        next=second;
+                    }
+                }
+            }
+        }
+        
+    }
+    
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif