early-access version 3088

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/condition_variable.hpp

@@ -0,0 +1,496 @@
+#ifndef BOOST_THREAD_CONDITION_VARIABLE_PTHREAD_HPP
+#define BOOST_THREAD_CONDITION_VARIABLE_PTHREAD_HPP
+// 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 2007-10 Anthony Williams
+// (C) Copyright 2011-2012 Vicente J. Botet Escriba
+
+#include <boost/thread/detail/platform_time.hpp>
+#include <boost/thread/pthread/pthread_mutex_scoped_lock.hpp>
+#include <boost/thread/pthread/pthread_helpers.hpp>
+
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+#include <boost/thread/interruption.hpp>
+#include <boost/thread/pthread/thread_data.hpp>
+#endif
+#include <boost/thread/pthread/condition_variable_fwd.hpp>
+#ifdef BOOST_THREAD_USES_CHRONO
+#include <boost/chrono/system_clocks.hpp>
+#include <boost/chrono/ceil.hpp>
+#endif
+#include <boost/thread/detail/delete.hpp>
+
+#include <algorithm>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+    namespace thread_cv_detail
+    {
+        template<typename MutexType>
+        struct lock_on_exit
+        {
+            MutexType* m;
+
+            lock_on_exit():
+                m(0)
+            {}
+
+            void activate(MutexType& m_)
+            {
+                m_.unlock();
+                m=&m_;
+            }
+            void deactivate()
+            {
+                if (m)
+                {
+                    m->lock();
+                }
+                m = 0;
+            }
+            ~lock_on_exit() BOOST_NOEXCEPT_IF(false)
+            {
+                if (m)
+                {
+                    m->lock();
+                }
+           }
+        };
+    }
+
+    inline void condition_variable::wait(unique_lock<mutex>& m)
+    {
+#if defined BOOST_THREAD_THROW_IF_PRECONDITION_NOT_SATISFIED
+        if(! m.owns_lock())
+        {
+            boost::throw_exception(condition_error(-1, "boost::condition_variable::wait() failed precondition mutex not owned"));
+        }
+#endif
+        int res=0;
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            thread_cv_detail::lock_on_exit<unique_lock<mutex> > guard;
+            detail::interruption_checker check_for_interruption(&internal_mutex,&cond);
+            pthread_mutex_t* the_mutex = &internal_mutex;
+            guard.activate(m);
+            res = posix::pthread_cond_wait(&cond,the_mutex);
+            check_for_interruption.unlock_if_locked();
+            guard.deactivate();
+#else
+            pthread_mutex_t* the_mutex = m.mutex()->native_handle();
+            res = posix::pthread_cond_wait(&cond,the_mutex);
+#endif
+        }
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+        this_thread::interruption_point();
+#endif
+        if(res)
+        {
+            boost::throw_exception(condition_error(res, "boost::condition_variable::wait failed in pthread_cond_wait"));
+        }
+    }
+
+    // When this function returns true:
+    // * A notification (or sometimes a spurious OS signal) has been received
+    // * Do not assume that the timeout has not been reached
+    // * Do not assume that the predicate has been changed
+    //
+    // When this function returns false:
+    // * The timeout has been reached
+    // * Do not assume that a notification has not been received
+    // * Do not assume that the predicate has not been changed
+    inline bool condition_variable::do_wait_until(
+                unique_lock<mutex>& m,
+                detail::internal_platform_timepoint const &timeout)
+    {
+#if defined BOOST_THREAD_THROW_IF_PRECONDITION_NOT_SATISFIED
+        if (!m.owns_lock())
+        {
+            boost::throw_exception(condition_error(EPERM, "boost::condition_variable::do_wait_until() failed precondition mutex not owned"));
+        }
+#endif
+        int cond_res;
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            thread_cv_detail::lock_on_exit<unique_lock<mutex> > guard;
+            detail::interruption_checker check_for_interruption(&internal_mutex,&cond);
+            pthread_mutex_t* the_mutex = &internal_mutex;
+            guard.activate(m);
+            cond_res=posix::pthread_cond_timedwait(&cond,the_mutex,&timeout.getTs());
+            check_for_interruption.unlock_if_locked();
+            guard.deactivate();
+#else
+            pthread_mutex_t* the_mutex = m.mutex()->native_handle();
+            cond_res=posix::pthread_cond_timedwait(&cond,the_mutex,&timeout.getTs());
+#endif
+        }
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+        this_thread::interruption_point();
+#endif
+        if(cond_res==ETIMEDOUT)
+        {
+            return false;
+        }
+        if(cond_res)
+        {
+            boost::throw_exception(condition_error(cond_res, "boost::condition_variable::do_wait_until failed in pthread_cond_timedwait"));
+        }
+        return true;
+    }
+
+    inline void condition_variable::notify_one() BOOST_NOEXCEPT
+    {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+        boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex);
+#endif
+        BOOST_VERIFY(!posix::pthread_cond_signal(&cond));
+    }
+
+    inline void condition_variable::notify_all() BOOST_NOEXCEPT
+    {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+        boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex);
+#endif
+        BOOST_VERIFY(!posix::pthread_cond_broadcast(&cond));
+    }
+
+    class condition_variable_any
+    {
+        pthread_mutex_t internal_mutex;
+        pthread_cond_t cond;
+
+    public:
+        BOOST_THREAD_NO_COPYABLE(condition_variable_any)
+        condition_variable_any()
+        {
+            int const res=posix::pthread_mutex_init(&internal_mutex);
+            if(res)
+            {
+                boost::throw_exception(thread_resource_error(res, "boost::condition_variable_any::condition_variable_any() failed in pthread_mutex_init"));
+            }
+            int const res2 = posix::pthread_cond_init(&cond);
+            if(res2)
+            {
+                BOOST_VERIFY(!posix::pthread_mutex_destroy(&internal_mutex));
+                boost::throw_exception(thread_resource_error(res2, "boost::condition_variable_any::condition_variable_any() failed in pthread_cond_init"));
+            }
+        }
+        ~condition_variable_any()
+        {
+            BOOST_VERIFY(!posix::pthread_mutex_destroy(&internal_mutex));
+            BOOST_VERIFY(!posix::pthread_cond_destroy(&cond));
+        }
+
+        template<typename lock_type>
+        void wait(lock_type& m)
+        {
+            int res=0;
+            {
+                thread_cv_detail::lock_on_exit<lock_type> guard;
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+                detail::interruption_checker check_for_interruption(&internal_mutex,&cond);
+#else
+                boost::pthread::pthread_mutex_scoped_lock check_for_interruption(&internal_mutex);
+#endif
+                guard.activate(m);
+                res=posix::pthread_cond_wait(&cond,&internal_mutex);
+                check_for_interruption.unlock_if_locked();
+                guard.deactivate();
+            }
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            this_thread::interruption_point();
+#endif
+            if(res)
+            {
+                boost::throw_exception(condition_error(res, "boost::condition_variable_any::wait() failed in pthread_cond_wait"));
+            }
+        }
+
+        template<typename lock_type,typename predicate_type>
+        void wait(lock_type& m,predicate_type pred)
+        {
+            while (!pred())
+            {
+                wait(m);
+            }
+        }
+
+#if defined BOOST_THREAD_USES_DATETIME
+        template<typename lock_type>
+        bool timed_wait(lock_type& m,boost::system_time const& abs_time)
+        {
+#if defined BOOST_THREAD_WAIT_BUG
+            const detail::real_platform_timepoint ts(abs_time + BOOST_THREAD_WAIT_BUG);
+#else
+            const detail::real_platform_timepoint ts(abs_time);
+#endif
+#if defined BOOST_THREAD_INTERNAL_CLOCK_IS_MONO
+            // The system time may jump while this function is waiting. To compensate for this and time
+            // out near the correct time, we could call do_wait_until() in a loop with a short timeout
+            // and recheck the time remaining each time through the loop. However, because we can't
+            // check the predicate each time do_wait_until() completes, this introduces the possibility
+            // of not exiting the function when a notification occurs, since do_wait_until() may report
+            // that it timed out even though a notification was received. The best this function can do
+            // is report correctly whether or not it reached the timeout time.
+            const detail::platform_duration d(ts - detail::real_platform_clock::now());
+            do_wait_until(m, detail::internal_platform_clock::now() + d);
+            return ts > detail::real_platform_clock::now();
+#else
+            return do_wait_until(m, ts);
+#endif
+        }
+        template<typename lock_type>
+        bool timed_wait(lock_type& m,::boost::xtime const& abs_time)
+        {
+            return timed_wait(m,system_time(abs_time));
+        }
+
+        template<typename lock_type,typename duration_type>
+        bool timed_wait(lock_type& m,duration_type const& wait_duration)
+        {
+            if (wait_duration.is_pos_infinity())
+            {
+                wait(m);
+                return true;
+            }
+            if (wait_duration.is_special())
+            {
+                return true;
+            }
+            detail::platform_duration d(wait_duration);
+#if defined(BOOST_THREAD_HAS_MONO_CLOCK) && !defined(BOOST_THREAD_INTERNAL_CLOCK_IS_MONO)
+            // The system time may jump while this function is waiting. To compensate for this and time
+            // out near the correct time, we could call do_wait_until() in a loop with a short timeout
+            // and recheck the time remaining each time through the loop. However, because we can't
+            // check the predicate each time do_wait_until() completes, this introduces the possibility
+            // of not exiting the function when a notification occurs, since do_wait_until() may report
+            // that it timed out even though a notification was received. The best this function can do
+            // is report correctly whether or not it reached the timeout time.
+            const detail::mono_platform_timepoint ts(detail::mono_platform_clock::now() + d);
+            do_wait_until(m, detail::internal_platform_clock::now() + d);
+            return ts > detail::mono_platform_clock::now();
+#else
+            return do_wait_until(m, detail::internal_platform_clock::now() + d);
+#endif
+        }
+
+        template<typename lock_type,typename predicate_type>
+        bool timed_wait(lock_type& m,boost::system_time const& abs_time, predicate_type pred)
+        {
+#if defined BOOST_THREAD_WAIT_BUG
+            const detail::real_platform_timepoint ts(abs_time + BOOST_THREAD_WAIT_BUG);
+#else
+            const detail::real_platform_timepoint ts(abs_time);
+#endif
+            while (!pred())
+            {
+#if defined BOOST_THREAD_INTERNAL_CLOCK_IS_MONO
+                // The system time may jump while this function is waiting. To compensate for this
+                // and time out near the correct time, we call do_wait_until() in a loop with a
+                // short timeout and recheck the time remaining each time through the loop.
+                detail::platform_duration d(ts - detail::real_platform_clock::now());
+                if (d <= detail::platform_duration::zero()) break; // timeout occurred
+                d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+                do_wait_until(m, detail::internal_platform_clock::now() + d);
+#else
+                if (!do_wait_until(m, ts)) break; // timeout occurred
+#endif
+            }
+            return pred();
+        }
+
+        template<typename lock_type,typename predicate_type>
+        bool timed_wait(lock_type& m,::boost::xtime const& abs_time, predicate_type pred)
+        {
+            return timed_wait(m,system_time(abs_time),pred);
+        }
+
+        template<typename lock_type,typename duration_type,typename predicate_type>
+        bool timed_wait(lock_type& m,duration_type const& wait_duration,predicate_type pred)
+        {
+            if (wait_duration.is_pos_infinity())
+            {
+                while (!pred())
+                {
+                    wait(m);
+                }
+                return true;
+            }
+            if (wait_duration.is_special())
+            {
+                return pred();
+            }
+            detail::platform_duration d(wait_duration);
+#if defined(BOOST_THREAD_HAS_MONO_CLOCK) && !defined(BOOST_THREAD_INTERNAL_CLOCK_IS_MONO)
+            // The system time may jump while this function is waiting. To compensate for this
+            // and time out near the correct time, we call do_wait_until() in a loop with a
+            // short timeout and recheck the time remaining each time through the loop.
+            const detail::mono_platform_timepoint ts(detail::mono_platform_clock::now() + d);
+            while (!pred())
+            {
+                if (d <= detail::platform_duration::zero()) break; // timeout occurred
+                d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+                do_wait_until(m, detail::internal_platform_clock::now() + d);
+                d = ts - detail::mono_platform_clock::now();
+            }
+#else
+            const detail::internal_platform_timepoint ts(detail::internal_platform_clock::now() + d);
+            while (!pred())
+            {
+                if (!do_wait_until(m, ts)) break; // timeout occurred
+            }
+#endif
+            return pred();
+        }
+#endif
+
+#ifdef BOOST_THREAD_USES_CHRONO
+        template <class lock_type,class Duration>
+        cv_status
+        wait_until(
+                lock_type& lock,
+                const chrono::time_point<detail::internal_chrono_clock, Duration>& t)
+        {
+            const boost::detail::internal_platform_timepoint ts(t);
+            if (do_wait_until(lock, ts)) return cv_status::no_timeout;
+            else return cv_status::timeout;
+        }
+
+        template <class lock_type, class Clock, class Duration>
+        cv_status
+        wait_until(
+                lock_type& lock,
+                const chrono::time_point<Clock, Duration>& t)
+        {
+            // The system time may jump while this function is waiting. To compensate for this and time
+            // out near the correct time, we could call do_wait_until() in a loop with a short timeout
+            // and recheck the time remaining each time through the loop. However, because we can't
+            // check the predicate each time do_wait_until() completes, this introduces the possibility
+            // of not exiting the function when a notification occurs, since do_wait_until() may report
+            // that it timed out even though a notification was received. The best this function can do
+            // is report correctly whether or not it reached the timeout time.
+            typedef typename common_type<Duration, typename Clock::duration>::type common_duration;
+            common_duration d(t - Clock::now());
+            do_wait_until(lock, detail::internal_chrono_clock::now() + d);
+            if (t > Clock::now()) return cv_status::no_timeout;
+            else return cv_status::timeout;
+        }
+
+        template <class lock_type, class Rep, class Period>
+        cv_status
+        wait_for(
+                lock_type& lock,
+                const chrono::duration<Rep, Period>& d)
+        {
+            return wait_until(lock, chrono::steady_clock::now() + d);
+        }
+
+        template <class lock_type, class Duration, class Predicate>
+        bool
+        wait_until(
+                lock_type& lock,
+                const chrono::time_point<detail::internal_chrono_clock, Duration>& t,
+                Predicate pred)
+        {
+            const detail::internal_platform_timepoint ts(t);
+            while (!pred())
+            {
+                if (!do_wait_until(lock, ts)) break; // timeout occurred
+            }
+            return pred();
+        }
+
+        template <class lock_type, class Clock, class Duration, class Predicate>
+        bool
+        wait_until(
+                lock_type& lock,
+                const chrono::time_point<Clock, Duration>& t,
+                Predicate pred)
+        {
+            // The system time may jump while this function is waiting. To compensate for this
+            // and time out near the correct time, we call do_wait_until() in a loop with a
+            // short timeout and recheck the time remaining each time through the loop.
+            typedef typename common_type<Duration, typename Clock::duration>::type common_duration;
+            while (!pred())
+            {
+                common_duration d(t - Clock::now());
+                if (d <= common_duration::zero()) break; // timeout occurred
+                d = (std::min)(d, common_duration(chrono::milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS)));
+                do_wait_until(lock, detail::internal_platform_clock::now() + detail::platform_duration(d));
+            }
+            return pred();
+        }
+
+        template <class lock_type, class Rep, class Period, class Predicate>
+        bool
+        wait_for(
+                lock_type& lock,
+                const chrono::duration<Rep, Period>& d,
+                Predicate pred)
+        {
+            return wait_until(lock, chrono::steady_clock::now() + d, boost::move(pred));
+        }
+#endif
+
+        void notify_one() BOOST_NOEXCEPT
+        {
+            boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex);
+            BOOST_VERIFY(!posix::pthread_cond_signal(&cond));
+        }
+
+        void notify_all() BOOST_NOEXCEPT
+        {
+            boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex);
+            BOOST_VERIFY(!posix::pthread_cond_broadcast(&cond));
+        }
+    private:
+
+        // When this function returns true:
+        // * A notification (or sometimes a spurious OS signal) has been received
+        // * Do not assume that the timeout has not been reached
+        // * Do not assume that the predicate has been changed
+        //
+        // When this function returns false:
+        // * The timeout has been reached
+        // * Do not assume that a notification has not been received
+        // * Do not assume that the predicate has not been changed
+        template <class lock_type>
+        bool do_wait_until(
+          lock_type& m,
+          detail::internal_platform_timepoint const &timeout)
+        {
+          int res=0;
+          {
+              thread_cv_detail::lock_on_exit<lock_type> guard;
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+              detail::interruption_checker check_for_interruption(&internal_mutex,&cond);
+#else
+              boost::pthread::pthread_mutex_scoped_lock check_for_interruption(&internal_mutex);
+#endif
+              guard.activate(m);
+              res=posix::pthread_cond_timedwait(&cond,&internal_mutex,&timeout.getTs());
+              check_for_interruption.unlock_if_locked();
+              guard.deactivate();
+          }
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+          this_thread::interruption_point();
+#endif
+          if(res==ETIMEDOUT)
+          {
+              return false;
+          }
+          if(res)
+          {
+              boost::throw_exception(condition_error(res, "boost::condition_variable_any::do_wait_until() failed in pthread_cond_timedwait"));
+          }
+          return true;
+        }
+    };
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/condition_variable_fwd.hpp

@@ -0,0 +1,341 @@
+#ifndef BOOST_THREAD_PTHREAD_CONDITION_VARIABLE_FWD_HPP
+#define BOOST_THREAD_PTHREAD_CONDITION_VARIABLE_FWD_HPP
+// 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 2007-8 Anthony Williams
+// (C) Copyright 2011-2012 Vicente J. Botet Escriba
+
+#include <boost/assert.hpp>
+#include <boost/throw_exception.hpp>
+#include <pthread.h>
+#include <boost/thread/cv_status.hpp>
+#include <boost/thread/mutex.hpp>
+#include <boost/thread/lock_types.hpp>
+#include <boost/thread/thread_time.hpp>
+#include <boost/thread/detail/platform_time.hpp>
+#include <boost/thread/pthread/pthread_helpers.hpp>
+
+#if defined BOOST_THREAD_USES_DATETIME
+#include <boost/thread/xtime.hpp>
+#endif
+
+#ifdef BOOST_THREAD_USES_CHRONO
+#include <boost/chrono/system_clocks.hpp>
+#include <boost/chrono/ceil.hpp>
+#endif
+#include <boost/thread/detail/delete.hpp>
+#include <boost/date_time/posix_time/posix_time_duration.hpp>
+
+#include <algorithm>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+    class condition_variable
+    {
+    private:
+//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+        pthread_mutex_t internal_mutex;
+//#endif
+        pthread_cond_t cond;
+
+    public:
+    //private: // used by boost::thread::try_join_until
+
+        bool do_wait_until(
+            unique_lock<mutex>& lock,
+            detail::internal_platform_timepoint const &timeout);
+
+    public:
+      BOOST_THREAD_NO_COPYABLE(condition_variable)
+        condition_variable()
+        {
+            int res;
+//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            // Even if it is not used, the internal_mutex exists (see
+            // above) and must be initialized (etc) in case some
+            // compilation units provide interruptions and others
+            // don't.
+            res=posix::pthread_mutex_init(&internal_mutex);
+            if(res)
+            {
+                boost::throw_exception(thread_resource_error(res, "boost::condition_variable::condition_variable() constructor failed in pthread_mutex_init"));
+            }
+//#endif
+            res = posix::pthread_cond_init(&cond);
+            if (res)
+            {
+//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+                // ditto
+                BOOST_VERIFY(!posix::pthread_mutex_destroy(&internal_mutex));
+//#endif
+                boost::throw_exception(thread_resource_error(res, "boost::condition_variable::condition_variable() constructor failed in pthread_cond_init"));
+            }
+        }
+        ~condition_variable()
+        {
+//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            // ditto
+            BOOST_VERIFY(!posix::pthread_mutex_destroy(&internal_mutex));
+//#endif
+            BOOST_VERIFY(!posix::pthread_cond_destroy(&cond));
+        }
+
+        void wait(unique_lock<mutex>& m);
+
+        template<typename predicate_type>
+        void wait(unique_lock<mutex>& m,predicate_type pred)
+        {
+            while (!pred())
+            {
+                wait(m);
+            }
+        }
+
+#if defined BOOST_THREAD_USES_DATETIME
+        bool timed_wait(
+            unique_lock<mutex>& m,
+            boost::system_time const& abs_time)
+        {
+#if defined BOOST_THREAD_WAIT_BUG
+            const detail::real_platform_timepoint ts(abs_time + BOOST_THREAD_WAIT_BUG);
+#else
+            const detail::real_platform_timepoint ts(abs_time);
+#endif
+#if defined BOOST_THREAD_INTERNAL_CLOCK_IS_MONO
+            // The system time may jump while this function is waiting. To compensate for this and time
+            // out near the correct time, we could call do_wait_until() in a loop with a short timeout
+            // and recheck the time remaining each time through the loop. However, because we can't
+            // check the predicate each time do_wait_until() completes, this introduces the possibility
+            // of not exiting the function when a notification occurs, since do_wait_until() may report
+            // that it timed out even though a notification was received. The best this function can do
+            // is report correctly whether or not it reached the timeout time.
+            const detail::platform_duration d(ts - detail::real_platform_clock::now());
+            do_wait_until(m, detail::internal_platform_clock::now() + d);
+            return ts > detail::real_platform_clock::now();
+#else
+            return do_wait_until(m, ts);
+#endif
+        }
+        bool timed_wait(
+            unique_lock<mutex>& m,
+            ::boost::xtime const& abs_time)
+        {
+            return timed_wait(m,system_time(abs_time));
+        }
+
+        template<typename duration_type>
+        bool timed_wait(
+            unique_lock<mutex>& m,
+            duration_type const& wait_duration)
+        {
+            if (wait_duration.is_pos_infinity())
+            {
+                wait(m);
+                return true;
+            }
+            if (wait_duration.is_special())
+            {
+                return true;
+            }
+            detail::platform_duration d(wait_duration);
+#if defined(BOOST_THREAD_HAS_MONO_CLOCK) && !defined(BOOST_THREAD_INTERNAL_CLOCK_IS_MONO)
+            // The system time may jump while this function is waiting. To compensate for this and time
+            // out near the correct time, we could call do_wait_until() in a loop with a short timeout
+            // and recheck the time remaining each time through the loop. However, because we can't
+            // check the predicate each time do_wait_until() completes, this introduces the possibility
+            // of not exiting the function when a notification occurs, since do_wait_until() may report
+            // that it timed out even though a notification was received. The best this function can do
+            // is report correctly whether or not it reached the timeout time.
+            const detail::mono_platform_timepoint ts(detail::mono_platform_clock::now() + d);
+            do_wait_until(m, detail::internal_platform_clock::now() + d);
+            return ts > detail::mono_platform_clock::now();
+#else
+            return do_wait_until(m, detail::internal_platform_clock::now() + d);
+#endif
+        }
+
+        template<typename predicate_type>
+        bool timed_wait(
+            unique_lock<mutex>& m,
+            boost::system_time const& abs_time,predicate_type pred)
+        {
+#if defined BOOST_THREAD_WAIT_BUG
+            const detail::real_platform_timepoint ts(abs_time + BOOST_THREAD_WAIT_BUG);
+#else
+            const detail::real_platform_timepoint ts(abs_time);
+#endif
+            while (!pred())
+            {
+#if defined BOOST_THREAD_INTERNAL_CLOCK_IS_MONO
+                // The system time may jump while this function is waiting. To compensate for this
+                // and time out near the correct time, we call do_wait_until() in a loop with a
+                // short timeout and recheck the time remaining each time through the loop.
+                detail::platform_duration d(ts - detail::real_platform_clock::now());
+                if (d <= detail::platform_duration::zero()) break; // timeout occurred
+                d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+                do_wait_until(m, detail::internal_platform_clock::now() + d);
+#else
+                if (!do_wait_until(m, ts)) break; // timeout occurred
+#endif
+            }
+            return pred();
+        }
+
+        template<typename predicate_type>
+        bool timed_wait(
+            unique_lock<mutex>& m,
+            ::boost::xtime const& abs_time,predicate_type pred)
+        {
+            return timed_wait(m,system_time(abs_time),pred);
+        }
+
+        template<typename duration_type,typename predicate_type>
+        bool timed_wait(
+            unique_lock<mutex>& m,
+            duration_type const& wait_duration,predicate_type pred)
+        {
+            if (wait_duration.is_pos_infinity())
+            {
+                while (!pred())
+                {
+                    wait(m);
+                }
+                return true;
+            }
+            if (wait_duration.is_special())
+            {
+                return pred();
+            }
+            detail::platform_duration d(wait_duration);
+#if defined(BOOST_THREAD_HAS_MONO_CLOCK) && !defined(BOOST_THREAD_INTERNAL_CLOCK_IS_MONO)
+            // The system time may jump while this function is waiting. To compensate for this
+            // and time out near the correct time, we call do_wait_until() in a loop with a
+            // short timeout and recheck the time remaining each time through the loop.
+            const detail::mono_platform_timepoint ts(detail::mono_platform_clock::now() + d);
+            while (!pred())
+            {
+                if (d <= detail::platform_duration::zero()) break; // timeout occurred
+                d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+                do_wait_until(m, detail::internal_platform_clock::now() + d);
+                d = ts - detail::mono_platform_clock::now();
+            }
+#else
+            const detail::internal_platform_timepoint ts(detail::internal_platform_clock::now() + d);
+            while (!pred())
+            {
+                if (!do_wait_until(m, ts)) break; // timeout occurred
+            }
+#endif
+            return pred();
+        }
+#endif
+
+#ifdef BOOST_THREAD_USES_CHRONO
+
+        template <class Duration>
+        cv_status
+        wait_until(
+                unique_lock<mutex>& lock,
+                const chrono::time_point<detail::internal_chrono_clock, Duration>& t)
+        {
+            const detail::internal_platform_timepoint ts(t);
+            if (do_wait_until(lock, ts)) return cv_status::no_timeout;
+            else return cv_status::timeout;
+        }
+
+        template <class Clock, class Duration>
+        cv_status
+        wait_until(
+                unique_lock<mutex>& lock,
+                const chrono::time_point<Clock, Duration>& t)
+        {
+            // The system time may jump while this function is waiting. To compensate for this and time
+            // out near the correct time, we could call do_wait_until() in a loop with a short timeout
+            // and recheck the time remaining each time through the loop. However, because we can't
+            // check the predicate each time do_wait_until() completes, this introduces the possibility
+            // of not exiting the function when a notification occurs, since do_wait_until() may report
+            // that it timed out even though a notification was received. The best this function can do
+            // is report correctly whether or not it reached the timeout time.
+            typedef typename common_type<Duration, typename Clock::duration>::type common_duration;
+            common_duration d(t - Clock::now());
+            do_wait_until(lock, detail::internal_chrono_clock::now() + d);
+            if (t > Clock::now()) return cv_status::no_timeout;
+            else return cv_status::timeout;
+        }
+
+        template <class Rep, class Period>
+        cv_status
+        wait_for(
+                unique_lock<mutex>& lock,
+                const chrono::duration<Rep, Period>& d)
+        {
+            return wait_until(lock, chrono::steady_clock::now() + d);
+        }
+
+        template <class Duration, class Predicate>
+        bool
+        wait_until(
+                unique_lock<mutex>& lock,
+                const chrono::time_point<detail::internal_chrono_clock, Duration>& t,
+                Predicate pred)
+        {
+            const detail::internal_platform_timepoint ts(t);
+            while (!pred())
+            {
+                if (!do_wait_until(lock, ts)) break; // timeout occurred
+            }
+            return pred();
+        }
+
+        template <class Clock, class Duration, class Predicate>
+        bool
+        wait_until(
+                unique_lock<mutex>& lock,
+                const chrono::time_point<Clock, Duration>& t,
+                Predicate pred)
+        {
+            // The system time may jump while this function is waiting. To compensate for this
+            // and time out near the correct time, we call do_wait_until() in a loop with a
+            // short timeout and recheck the time remaining each time through the loop.
+            typedef typename common_type<Duration, typename Clock::duration>::type common_duration;
+            while (!pred())
+            {
+                common_duration d(t - Clock::now());
+                if (d <= common_duration::zero()) break; // timeout occurred
+                d = (std::min)(d, common_duration(chrono::milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS)));
+                do_wait_until(lock, detail::internal_platform_clock::now() + detail::platform_duration(d));
+            }
+            return pred();
+        }
+
+        template <class Rep, class Period, class Predicate>
+        bool
+        wait_for(
+                unique_lock<mutex>& lock,
+                const chrono::duration<Rep, Period>& d,
+                Predicate pred)
+        {
+            return wait_until(lock, chrono::steady_clock::now() + d, boost::move(pred));
+        }
+#endif
+
+#define BOOST_THREAD_DEFINES_CONDITION_VARIABLE_NATIVE_HANDLE
+        typedef pthread_cond_t* native_handle_type;
+        native_handle_type native_handle()
+        {
+            return &cond;
+        }
+
+        void notify_one() BOOST_NOEXCEPT;
+        void notify_all() BOOST_NOEXCEPT;
+    };
+
+    BOOST_THREAD_DECL void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/mutex.hpp

@@ -0,0 +1,320 @@
+#ifndef BOOST_THREAD_PTHREAD_MUTEX_HPP
+#define BOOST_THREAD_PTHREAD_MUTEX_HPP
+// (C) Copyright 2007-8 Anthony Williams
+// (C) Copyright 2011,2012,2015 Vicente J. Botet Escriba
+// 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)
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/assert.hpp>
+#include <pthread.h>
+#include <boost/throw_exception.hpp>
+#include <boost/core/ignore_unused.hpp>
+#include <boost/thread/exceptions.hpp>
+#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
+#include <boost/thread/lock_types.hpp>
+#endif
+#include <boost/thread/thread_time.hpp>
+#if defined BOOST_THREAD_USES_DATETIME
+#include <boost/thread/xtime.hpp>
+#endif
+#include <boost/assert.hpp>
+#include <errno.h>
+#include <boost/thread/detail/platform_time.hpp>
+#include <boost/thread/pthread/pthread_mutex_scoped_lock.hpp>
+#include <boost/thread/pthread/pthread_helpers.hpp>
+#ifdef BOOST_THREAD_USES_CHRONO
+#include <boost/chrono/system_clocks.hpp>
+#include <boost/chrono/ceil.hpp>
+#endif
+#include <boost/thread/detail/delete.hpp>
+
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+
+    class BOOST_THREAD_CAPABILITY("mutex") mutex
+    {
+    private:
+        pthread_mutex_t m;
+    public:
+        BOOST_THREAD_NO_COPYABLE(mutex)
+
+        mutex()
+        {
+            int const res=posix::pthread_mutex_init(&m);
+            if(res)
+            {
+                boost::throw_exception(thread_resource_error(res, "boost:: mutex constructor failed in pthread_mutex_init"));
+            }
+        }
+        ~mutex()
+        {
+          BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
+        }
+
+        void lock() BOOST_THREAD_ACQUIRE()
+        {
+            int res = posix::pthread_mutex_lock(&m);
+            if (res)
+            {
+                boost::throw_exception(lock_error(res,"boost: mutex lock failed in pthread_mutex_lock"));
+            }
+        }
+
+        void unlock() BOOST_THREAD_RELEASE()
+        {
+            BOOST_VERIFY(!posix::pthread_mutex_unlock(&m));
+        }
+
+        bool try_lock() BOOST_THREAD_TRY_ACQUIRE(true)
+        {
+            int res = posix::pthread_mutex_trylock(&m);
+            if (res==EBUSY)
+            {
+                return false;
+            }
+
+            return !res;
+        }
+
+#define BOOST_THREAD_DEFINES_MUTEX_NATIVE_HANDLE
+        typedef pthread_mutex_t* native_handle_type;
+        native_handle_type native_handle()
+        {
+            return &m;
+        }
+
+#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
+        typedef unique_lock<mutex> scoped_lock;
+        typedef detail::try_lock_wrapper<mutex> scoped_try_lock;
+#endif
+    };
+
+    typedef mutex try_mutex;
+
+    class timed_mutex
+    {
+    private:
+        pthread_mutex_t m;
+#ifndef BOOST_THREAD_USES_PTHREAD_TIMEDLOCK
+        pthread_cond_t cond;
+        bool is_locked;
+#endif
+    public:
+        BOOST_THREAD_NO_COPYABLE(timed_mutex)
+        timed_mutex()
+        {
+            int const res=posix::pthread_mutex_init(&m);
+            if(res)
+            {
+                boost::throw_exception(thread_resource_error(res, "boost:: timed_mutex constructor failed in pthread_mutex_init"));
+            }
+#ifndef BOOST_THREAD_USES_PTHREAD_TIMEDLOCK
+            int const res2=posix::pthread_cond_init(&cond);
+            if(res2)
+            {
+                BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
+                boost::throw_exception(thread_resource_error(res2, "boost:: timed_mutex constructor failed in pthread_cond_init"));
+            }
+            is_locked=false;
+#endif
+        }
+        ~timed_mutex()
+        {
+            BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
+#ifndef BOOST_THREAD_USES_PTHREAD_TIMEDLOCK
+            BOOST_VERIFY(!posix::pthread_cond_destroy(&cond));
+#endif
+        }
+
+#if defined BOOST_THREAD_USES_DATETIME
+        template<typename TimeDuration>
+        bool timed_lock(TimeDuration const & relative_time)
+        {
+            if (relative_time.is_pos_infinity())
+            {
+                lock();
+                return true;
+            }
+            if (relative_time.is_special())
+            {
+                return true;
+            }
+            detail::platform_duration d(relative_time);
+#if defined(BOOST_THREAD_HAS_MONO_CLOCK) && !defined(BOOST_THREAD_INTERNAL_CLOCK_IS_MONO)
+            const detail::mono_platform_timepoint ts(detail::mono_platform_clock::now() + d);
+            d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+            while ( ! do_try_lock_until(detail::internal_platform_clock::now() + d) )
+            {
+              d = ts - detail::mono_platform_clock::now();
+              if ( d <= detail::platform_duration::zero() ) return false; // timeout occurred
+              d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+            }
+            return true;
+#else
+            return do_try_lock_until(detail::internal_platform_clock::now() + d);
+#endif
+        }
+        bool timed_lock(boost::xtime const & absolute_time)
+        {
+            return timed_lock(system_time(absolute_time));
+        }
+#endif
+#ifdef BOOST_THREAD_USES_PTHREAD_TIMEDLOCK
+        void lock()
+        {
+            int res = posix::pthread_mutex_lock(&m);
+            if (res)
+            {
+                boost::throw_exception(lock_error(res,"boost: mutex lock failed in pthread_mutex_lock"));
+            }
+        }
+
+        void unlock()
+        {
+            BOOST_VERIFY(!posix::pthread_mutex_unlock(&m));
+        }
+
+        bool try_lock()
+        {
+          int res = posix::pthread_mutex_trylock(&m);
+          if (res==EBUSY)
+          {
+              return false;
+          }
+
+          return !res;
+        }
+
+
+    private:
+        bool do_try_lock_until(detail::internal_platform_timepoint const &timeout)
+        {
+          int const res=pthread_mutex_timedlock(&m,&timeout.getTs());
+          BOOST_ASSERT(!res || res==ETIMEDOUT);
+          return !res;
+        }
+    public:
+
+#else
+        void lock()
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            while(is_locked)
+            {
+                BOOST_VERIFY(!posix::pthread_cond_wait(&cond,&m));
+            }
+            is_locked=true;
+        }
+
+        void unlock()
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            is_locked=false;
+            BOOST_VERIFY(!posix::pthread_cond_signal(&cond));
+        }
+
+        bool try_lock()
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            if(is_locked)
+            {
+                return false;
+            }
+            is_locked=true;
+            return true;
+        }
+
+    private:
+        bool do_try_lock_until(detail::internal_platform_timepoint const &timeout)
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            while(is_locked)
+            {
+                int const cond_res=posix::pthread_cond_timedwait(&cond,&m,&timeout.getTs());
+                if(cond_res==ETIMEDOUT)
+                {
+                    break;
+                }
+                BOOST_ASSERT(!cond_res);
+            }
+            if(is_locked)
+            {
+                return false;
+            }
+            is_locked=true;
+            return true;
+        }
+    public:
+#endif
+
+#if defined BOOST_THREAD_USES_DATETIME
+        bool timed_lock(system_time const & abs_time)
+        {
+            const detail::real_platform_timepoint ts(abs_time);
+#if defined BOOST_THREAD_INTERNAL_CLOCK_IS_MONO
+            detail::platform_duration d(ts - detail::real_platform_clock::now());
+            d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+            while ( ! do_try_lock_until(detail::internal_platform_clock::now() + d) )
+            {
+              d = ts - detail::real_platform_clock::now();
+              if ( d <= detail::platform_duration::zero() ) return false; // timeout occurred
+              d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+            }
+            return true;
+#else
+            return do_try_lock_until(ts);
+#endif
+        }
+#endif
+#ifdef BOOST_THREAD_USES_CHRONO
+        template <class Rep, class Period>
+        bool try_lock_for(const chrono::duration<Rep, Period>& rel_time)
+        {
+          return try_lock_until(chrono::steady_clock::now() + rel_time);
+        }
+        template <class Clock, class Duration>
+        bool try_lock_until(const chrono::time_point<Clock, Duration>& t)
+        {
+          typedef typename common_type<Duration, typename Clock::duration>::type common_duration;
+          common_duration d(t - Clock::now());
+          d = (std::min)(d, common_duration(chrono::milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS)));
+          while ( ! try_lock_until(detail::internal_chrono_clock::now() + d))
+          {
+              d = t - Clock::now();
+              if ( d <= common_duration::zero() ) return false; // timeout occurred
+              d = (std::min)(d, common_duration(chrono::milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS)));
+          }
+          return true;
+        }
+        template <class Duration>
+        bool try_lock_until(const chrono::time_point<detail::internal_chrono_clock, Duration>& t)
+        {
+          detail::internal_platform_timepoint ts(t);
+          return do_try_lock_until(ts);
+        }
+#endif
+
+#define BOOST_THREAD_DEFINES_TIMED_MUTEX_NATIVE_HANDLE
+        typedef pthread_mutex_t* native_handle_type;
+        native_handle_type native_handle()
+        {
+            return &m;
+        }
+
+#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
+        typedef unique_lock<timed_mutex> scoped_timed_lock;
+        typedef detail::try_lock_wrapper<timed_mutex> scoped_try_lock;
+        typedef scoped_timed_lock scoped_lock;
+#endif
+    };
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+
+#endif

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/once.hpp

@@ -0,0 +1,541 @@
+#ifndef BOOST_THREAD_PTHREAD_ONCE_HPP
+#define BOOST_THREAD_PTHREAD_ONCE_HPP
+
+//  once.hpp
+//
+//  (C) Copyright 2007-8 Anthony Williams
+//  (C) Copyright 2011-2012 Vicente J. Botet Escriba
+//
+//  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)
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/detail/invoke.hpp>
+
+#include <boost/thread/pthread/pthread_helpers.hpp>
+#include <boost/thread/pthread/pthread_mutex_scoped_lock.hpp>
+#include <boost/thread/detail/delete.hpp>
+#include <boost/core/no_exceptions_support.hpp>
+
+#include <boost/bind/bind.hpp>
+#include <boost/assert.hpp>
+#include <boost/config/abi_prefix.hpp>
+
+#include <boost/cstdint.hpp>
+#include <pthread.h>
+#include <csignal>
+
+namespace boost
+{
+
+  struct once_flag;
+
+  #define BOOST_ONCE_INITIAL_FLAG_VALUE 0
+
+  namespace thread_detail
+  {
+    typedef boost::uint32_t  uintmax_atomic_t;
+    #define BOOST_THREAD_DETAIL_UINTMAX_ATOMIC_C2(value) value##u
+    #define BOOST_THREAD_DETAIL_UINTMAX_ATOMIC_MAX_C BOOST_THREAD_DETAIL_UINTMAX_ATOMIC_C2(~0)
+
+  }
+
+#ifdef BOOST_THREAD_PROVIDES_ONCE_CXX11
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template<typename Function, class ...ArgTypes>
+    inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(ArgTypes)... args);
+#else
+    template<typename Function>
+    inline void call_once(once_flag& flag, Function f);
+    template<typename Function, typename T1>
+    inline void call_once(once_flag& flag, Function f, T1 p1);
+    template<typename Function, typename T1, typename T2>
+    inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2);
+    template<typename Function, typename T1, typename T2, typename T3>
+    inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2, T3 p3);
+#endif
+
+  struct once_flag
+  {
+      BOOST_THREAD_NO_COPYABLE(once_flag)
+      BOOST_CONSTEXPR once_flag() BOOST_NOEXCEPT
+        : epoch(BOOST_ONCE_INITIAL_FLAG_VALUE)
+      {}
+  private:
+      volatile thread_detail::uintmax_atomic_t epoch;
+
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+      template<typename Function, class ...ArgTypes>
+      friend void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(ArgTypes)... args);
+#else
+      template<typename Function>
+      friend void call_once(once_flag& flag, Function f);
+      template<typename Function, typename T1>
+      friend void call_once(once_flag& flag, Function f, T1 p1);
+      template<typename Function, typename T1, typename T2>
+      friend void call_once(once_flag& flag, Function f, T1 p1, T2 p2);
+      template<typename Function, typename T1, typename T2, typename T3>
+      friend void call_once(once_flag& flag, Function f, T1 p1, T2 p2, T3 p3);
+
+#endif
+
+  };
+
+#define BOOST_ONCE_INIT once_flag()
+
+#else // BOOST_THREAD_PROVIDES_ONCE_CXX11
+
+    struct once_flag
+    {
+      volatile thread_detail::uintmax_atomic_t epoch;
+    };
+
+#define BOOST_ONCE_INIT {BOOST_ONCE_INITIAL_FLAG_VALUE}
+#endif // BOOST_THREAD_PROVIDES_ONCE_CXX11
+
+
+#if defined BOOST_THREAD_PROVIDES_INVOKE
+#define BOOST_THREAD_INVOKE_RET_VOID detail::invoke
+#define BOOST_THREAD_INVOKE_RET_VOID_CALL
+#elif defined BOOST_THREAD_PROVIDES_INVOKE_RET
+#define BOOST_THREAD_INVOKE_RET_VOID detail::invoke<void>
+#define BOOST_THREAD_INVOKE_RET_VOID_CALL
+#else
+#define BOOST_THREAD_INVOKE_RET_VOID boost::bind
+#define BOOST_THREAD_INVOKE_RET_VOID_CALL ()
+#endif
+
+    namespace thread_detail
+    {
+        BOOST_THREAD_DECL uintmax_atomic_t& get_once_per_thread_epoch();
+        BOOST_THREAD_DECL extern uintmax_atomic_t once_global_epoch;
+        BOOST_THREAD_DECL extern pthread_mutex_t once_epoch_mutex;
+        BOOST_THREAD_DECL extern pthread_cond_t once_epoch_cv;
+    }
+
+    // Based on Mike Burrows fast_pthread_once algorithm as described in
+    // http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2444.html
+
+
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+
+
+  template<typename Function, class ...ArgTypes>
+  inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(ArgTypes)... args)
+  {
+    static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
+    static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
+    thread_detail::uintmax_atomic_t const epoch=flag.epoch;
+    thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
+
+    if(epoch<this_thread_epoch)
+    {
+        pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
+
+        while(flag.epoch<=being_initialized)
+        {
+            if(flag.epoch==uninitialized_flag)
+            {
+                flag.epoch=being_initialized;
+                BOOST_TRY
+                {
+                    pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
+                    BOOST_THREAD_INVOKE_RET_VOID(
+                        thread_detail::decay_copy(boost::forward<Function>(f)),
+                        thread_detail::decay_copy(boost::forward<ArgTypes>(args))...
+                    ) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+                }
+                BOOST_CATCH (...)
+                {
+                    flag.epoch=uninitialized_flag;
+                    BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+                    BOOST_RETHROW
+                }
+                BOOST_CATCH_END
+                flag.epoch=--thread_detail::once_global_epoch;
+                BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+            }
+            else
+            {
+                while(flag.epoch==being_initialized)
+                {
+                    BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
+                }
+            }
+        }
+        this_thread_epoch=thread_detail::once_global_epoch;
+
+    }
+  }
+#else
+  template<typename Function>
+  inline void call_once(once_flag& flag, Function f)
+  {
+    static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
+    static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
+    thread_detail::uintmax_atomic_t const epoch=flag.epoch;
+    thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
+
+    if(epoch<this_thread_epoch)
+    {
+        pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
+
+        while(flag.epoch<=being_initialized)
+        {
+            if(flag.epoch==uninitialized_flag)
+            {
+                flag.epoch=being_initialized;
+                BOOST_TRY
+                {
+                    pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
+                    f();
+                }
+                BOOST_CATCH (...)
+                {
+                    flag.epoch=uninitialized_flag;
+                    BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+                    BOOST_RETHROW
+                }
+                BOOST_CATCH_END
+                flag.epoch=--thread_detail::once_global_epoch;
+                BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+            }
+            else
+            {
+                while(flag.epoch==being_initialized)
+                {
+                    BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
+                }
+            }
+        }
+        this_thread_epoch=thread_detail::once_global_epoch;
+    }
+  }
+
+  template<typename Function, typename T1>
+  inline void call_once(once_flag& flag, Function f, T1 p1)
+  {
+    static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
+    static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
+    thread_detail::uintmax_atomic_t const epoch=flag.epoch;
+    thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
+
+    if(epoch<this_thread_epoch)
+    {
+        pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
+
+        while(flag.epoch<=being_initialized)
+        {
+            if(flag.epoch==uninitialized_flag)
+            {
+                flag.epoch=being_initialized;
+                BOOST_TRY
+                {
+                    pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
+                    BOOST_THREAD_INVOKE_RET_VOID(f,p1) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+                }
+                BOOST_CATCH (...)
+                {
+                    flag.epoch=uninitialized_flag;
+                    BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+                    BOOST_RETHROW
+                }
+                BOOST_CATCH_END
+                flag.epoch=--thread_detail::once_global_epoch;
+                BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+            }
+            else
+            {
+                while(flag.epoch==being_initialized)
+                {
+                    BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
+                }
+            }
+        }
+        this_thread_epoch=thread_detail::once_global_epoch;
+    }
+  }
+  template<typename Function, typename T1, typename T2>
+  inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2)
+  {
+    static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
+    static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
+    thread_detail::uintmax_atomic_t const epoch=flag.epoch;
+    thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
+
+    if(epoch<this_thread_epoch)
+    {
+        pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
+
+        while(flag.epoch<=being_initialized)
+        {
+            if(flag.epoch==uninitialized_flag)
+            {
+                flag.epoch=being_initialized;
+                BOOST_TRY
+                {
+                    pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
+                    BOOST_THREAD_INVOKE_RET_VOID(f,p1, p2) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+        }
+                BOOST_CATCH (...)
+                {
+                    flag.epoch=uninitialized_flag;
+                    BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+                    BOOST_RETHROW
+                }
+                BOOST_CATCH_END
+                flag.epoch=--thread_detail::once_global_epoch;
+                BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+            }
+            else
+            {
+                while(flag.epoch==being_initialized)
+                {
+                    BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
+                }
+            }
+        }
+        this_thread_epoch=thread_detail::once_global_epoch;
+    }
+  }
+
+  template<typename Function, typename T1, typename T2, typename T3>
+  inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2, T3 p3)
+  {
+    static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
+    static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
+    thread_detail::uintmax_atomic_t const epoch=flag.epoch;
+    thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
+
+    if(epoch<this_thread_epoch)
+    {
+        pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
+
+        while(flag.epoch<=being_initialized)
+        {
+            if(flag.epoch==uninitialized_flag)
+            {
+                flag.epoch=being_initialized;
+                BOOST_TRY
+                {
+                    pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
+                    BOOST_THREAD_INVOKE_RET_VOID(f,p1, p2, p3) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+        }
+                BOOST_CATCH (...)
+                {
+                    flag.epoch=uninitialized_flag;
+                    BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+                    BOOST_RETHROW
+                }
+                BOOST_CATCH_END
+                flag.epoch=--thread_detail::once_global_epoch;
+                BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+            }
+            else
+            {
+                while(flag.epoch==being_initialized)
+                {
+                    BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
+                }
+            }
+        }
+        this_thread_epoch=thread_detail::once_global_epoch;
+    }
+  }
+
+  template<typename Function>
+  inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f)
+  {
+    static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
+    static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
+    thread_detail::uintmax_atomic_t const epoch=flag.epoch;
+    thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
+
+    if(epoch<this_thread_epoch)
+    {
+        pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
+
+        while(flag.epoch<=being_initialized)
+        {
+            if(flag.epoch==uninitialized_flag)
+            {
+                flag.epoch=being_initialized;
+                BOOST_TRY
+                {
+                    pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
+                    f();
+                }
+                BOOST_CATCH (...)
+                {
+                    flag.epoch=uninitialized_flag;
+                    BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+                    BOOST_RETHROW
+                }
+                BOOST_CATCH_END
+                flag.epoch=--thread_detail::once_global_epoch;
+                BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+            }
+            else
+            {
+                while(flag.epoch==being_initialized)
+                {
+                    BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
+                }
+            }
+        }
+        this_thread_epoch=thread_detail::once_global_epoch;
+    }
+  }
+
+  template<typename Function, typename T1>
+  inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1)
+  {
+    static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
+    static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
+    thread_detail::uintmax_atomic_t const epoch=flag.epoch;
+    thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
+
+    if(epoch<this_thread_epoch)
+    {
+        pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
+
+        while(flag.epoch<=being_initialized)
+        {
+            if(flag.epoch==uninitialized_flag)
+            {
+                flag.epoch=being_initialized;
+                BOOST_TRY
+                {
+                    pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
+                    BOOST_THREAD_INVOKE_RET_VOID(
+                        thread_detail::decay_copy(boost::forward<Function>(f)),
+                        thread_detail::decay_copy(boost::forward<T1>(p1))
+                    ) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+                }
+                BOOST_CATCH (...)
+                {
+                    flag.epoch=uninitialized_flag;
+                    BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+                    BOOST_RETHROW
+                }
+                BOOST_CATCH_END
+                flag.epoch=--thread_detail::once_global_epoch;
+                BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+            }
+            else
+            {
+                while(flag.epoch==being_initialized)
+                {
+                    BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
+                }
+            }
+        }
+        this_thread_epoch=thread_detail::once_global_epoch;
+    }
+  }
+  template<typename Function, typename T1, typename T2>
+  inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1, BOOST_THREAD_RV_REF(T2) p2)
+  {
+    static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
+    static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
+    thread_detail::uintmax_atomic_t const epoch=flag.epoch;
+    thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
+
+    if(epoch<this_thread_epoch)
+    {
+        pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
+
+        while(flag.epoch<=being_initialized)
+        {
+            if(flag.epoch==uninitialized_flag)
+            {
+                flag.epoch=being_initialized;
+                BOOST_TRY
+                {
+                    pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
+                    BOOST_THREAD_INVOKE_RET_VOID(
+                        thread_detail::decay_copy(boost::forward<Function>(f)),
+                        thread_detail::decay_copy(boost::forward<T1>(p1)),
+                        thread_detail::decay_copy(boost::forward<T1>(p2))
+                    ) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+                }
+                BOOST_CATCH (...)
+                {
+                    flag.epoch=uninitialized_flag;
+                    BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+                    BOOST_RETHROW
+                }
+                BOOST_CATCH_END
+                flag.epoch=--thread_detail::once_global_epoch;
+                BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+            }
+            else
+            {
+                while(flag.epoch==being_initialized)
+                {
+                    BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
+                }
+            }
+        }
+        this_thread_epoch=thread_detail::once_global_epoch;
+    }
+  }
+
+  template<typename Function, typename T1, typename T2, typename T3>
+  inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1, BOOST_THREAD_RV_REF(T2) p2, BOOST_THREAD_RV_REF(T3) p3)
+  {
+    static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
+    static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
+    thread_detail::uintmax_atomic_t const epoch=flag.epoch;
+    thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
+
+    if(epoch<this_thread_epoch)
+    {
+        pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
+
+        while(flag.epoch<=being_initialized)
+        {
+            if(flag.epoch==uninitialized_flag)
+            {
+                flag.epoch=being_initialized;
+                BOOST_TRY
+                {
+                    pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
+                    BOOST_THREAD_INVOKE_RET_VOID(
+                        thread_detail::decay_copy(boost::forward<Function>(f)),
+                        thread_detail::decay_copy(boost::forward<T1>(p1)),
+                        thread_detail::decay_copy(boost::forward<T1>(p2)),
+                        thread_detail::decay_copy(boost::forward<T1>(p3))
+                    ) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+                }
+                BOOST_CATCH (...)
+                {
+                    flag.epoch=uninitialized_flag;
+                    BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+                    BOOST_RETHROW
+                }
+                BOOST_CATCH_END
+                flag.epoch=--thread_detail::once_global_epoch;
+                BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
+            }
+            else
+            {
+                while(flag.epoch==being_initialized)
+                {
+                    BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
+                }
+            }
+        }
+        this_thread_epoch=thread_detail::once_global_epoch;
+    }
+  }
+
+#endif
+
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/once_atomic.hpp

@@ -0,0 +1,313 @@
+#ifndef BOOST_THREAD_PTHREAD_ONCE_ATOMIC_HPP
+#define BOOST_THREAD_PTHREAD_ONCE_ATOMIC_HPP
+
+//  once.hpp
+//
+//  (C) Copyright 2013 Andrey Semashev
+//  (C) Copyright 2013 Vicente J. Botet Escriba
+//
+//  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)
+
+#include <boost/thread/detail/config.hpp>
+
+#include <boost/cstdint.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/detail/invoke.hpp>
+#include <boost/core/no_exceptions_support.hpp>
+#include <boost/bind/bind.hpp>
+#include <boost/atomic.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+
+  struct once_flag;
+
+  namespace thread_detail
+  {
+
+#if BOOST_ATOMIC_INT_LOCK_FREE == 2
+    typedef unsigned int atomic_int_type;
+#elif BOOST_ATOMIC_SHORT_LOCK_FREE == 2
+    typedef unsigned short atomic_int_type;
+#elif BOOST_ATOMIC_CHAR_LOCK_FREE == 2
+    typedef unsigned char atomic_int_type;
+#elif BOOST_ATOMIC_LONG_LOCK_FREE == 2
+    typedef unsigned long atomic_int_type;
+#elif defined(BOOST_HAS_LONG_LONG) && BOOST_ATOMIC_LLONG_LOCK_FREE == 2
+    typedef ulong_long_type atomic_int_type;
+#else
+    // All tested integer types are not atomic, the spinlock pool will be used
+    typedef unsigned int atomic_int_type;
+#endif
+
+    typedef boost::atomic<atomic_int_type> atomic_type;
+
+    BOOST_THREAD_DECL bool enter_once_region(once_flag& flag) BOOST_NOEXCEPT;
+    BOOST_THREAD_DECL void commit_once_region(once_flag& flag) BOOST_NOEXCEPT;
+    BOOST_THREAD_DECL void rollback_once_region(once_flag& flag) BOOST_NOEXCEPT;
+    inline atomic_type& get_atomic_storage(once_flag& flag)  BOOST_NOEXCEPT;
+  }
+
+#ifdef BOOST_THREAD_PROVIDES_ONCE_CXX11
+
+  struct once_flag
+  {
+    BOOST_THREAD_NO_COPYABLE(once_flag)
+    BOOST_CONSTEXPR once_flag() BOOST_NOEXCEPT : storage(0)
+    {
+    }
+
+  private:
+    thread_detail::atomic_type storage;
+
+    friend BOOST_THREAD_DECL bool thread_detail::enter_once_region(once_flag& flag) BOOST_NOEXCEPT;
+    friend BOOST_THREAD_DECL void thread_detail::commit_once_region(once_flag& flag) BOOST_NOEXCEPT;
+    friend BOOST_THREAD_DECL void thread_detail::rollback_once_region(once_flag& flag) BOOST_NOEXCEPT;
+    friend thread_detail::atomic_type& thread_detail::get_atomic_storage(once_flag& flag) BOOST_NOEXCEPT;
+  };
+
+#define BOOST_ONCE_INIT boost::once_flag()
+
+  namespace thread_detail
+  {
+    inline atomic_type& get_atomic_storage(once_flag& flag) BOOST_NOEXCEPT
+    {
+      //return reinterpret_cast< atomic_type& >(flag.storage);
+      return flag.storage;
+    }
+  }
+
+#else // BOOST_THREAD_PROVIDES_ONCE_CXX11
+  struct once_flag
+  {
+    // The thread_detail::atomic_int_type storage is marked
+    // with this attribute in order to let the compiler know that it will alias this member
+    // and silence compilation warnings.
+    BOOST_THREAD_ATTRIBUTE_MAY_ALIAS thread_detail::atomic_int_type storage;
+  };
+
+  #define BOOST_ONCE_INIT {0}
+
+  namespace thread_detail
+  {
+    inline atomic_type& get_atomic_storage(once_flag& flag) BOOST_NOEXCEPT
+    {
+      return reinterpret_cast< atomic_type& >(flag.storage);
+    }
+
+  }
+
+#endif // BOOST_THREAD_PROVIDES_ONCE_CXX11
+
+#if defined BOOST_THREAD_PROVIDES_INVOKE
+#define BOOST_THREAD_INVOKE_RET_VOID detail::invoke
+#define BOOST_THREAD_INVOKE_RET_VOID_CALL
+#elif defined BOOST_THREAD_PROVIDES_INVOKE_RET
+#define BOOST_THREAD_INVOKE_RET_VOID detail::invoke<void>
+#define BOOST_THREAD_INVOKE_RET_VOID_CALL
+#else
+#define BOOST_THREAD_INVOKE_RET_VOID boost::bind
+#define BOOST_THREAD_INVOKE_RET_VOID_CALL ()
+#endif
+
+
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+
+  template<typename Function, class ...ArgTypes>
+  inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(ArgTypes)... args)
+  {
+    if (thread_detail::enter_once_region(flag))
+    {
+      BOOST_TRY
+      {
+        BOOST_THREAD_INVOKE_RET_VOID(
+                        thread_detail::decay_copy(boost::forward<Function>(f)),
+                        thread_detail::decay_copy(boost::forward<ArgTypes>(args))...
+        ) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+      }
+      BOOST_CATCH (...)
+      {
+        thread_detail::rollback_once_region(flag);
+        BOOST_RETHROW
+      }
+      BOOST_CATCH_END
+      thread_detail::commit_once_region(flag);
+    }
+  }
+#else
+  template<typename Function>
+  inline void call_once(once_flag& flag, Function f)
+  {
+    if (thread_detail::enter_once_region(flag))
+    {
+      BOOST_TRY
+      {
+        f();
+      }
+      BOOST_CATCH (...)
+      {
+        thread_detail::rollback_once_region(flag);
+        BOOST_RETHROW
+      }
+      BOOST_CATCH_END
+      thread_detail::commit_once_region(flag);
+    }
+  }
+
+  template<typename Function, typename T1>
+  inline void call_once(once_flag& flag, Function f, T1 p1)
+  {
+    if (thread_detail::enter_once_region(flag))
+    {
+      BOOST_TRY
+      {
+        BOOST_THREAD_INVOKE_RET_VOID(f, p1) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+      }
+      BOOST_CATCH (...)
+      {
+        thread_detail::rollback_once_region(flag);
+        BOOST_RETHROW
+      }
+      BOOST_CATCH_END
+      thread_detail::commit_once_region(flag);
+    }
+  }
+
+  template<typename Function, typename T1, typename T2>
+  inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2)
+  {
+    if (thread_detail::enter_once_region(flag))
+    {
+      BOOST_TRY
+      {
+        BOOST_THREAD_INVOKE_RET_VOID(f, p1, p2) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+      }
+      BOOST_CATCH (...)
+      {
+        thread_detail::rollback_once_region(flag);
+        BOOST_RETHROW
+      }
+      BOOST_CATCH_END
+      thread_detail::commit_once_region(flag);
+    }
+  }
+
+  template<typename Function, typename T1, typename T2, typename T3>
+  inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2, T3 p3)
+  {
+    if (thread_detail::enter_once_region(flag))
+    {
+      BOOST_TRY
+      {
+        BOOST_THREAD_INVOKE_RET_VOID(f, p1, p2, p3) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+      }
+      BOOST_CATCH (...)
+      {
+        thread_detail::rollback_once_region(flag);
+        BOOST_RETHROW
+      }
+      BOOST_CATCH_END
+      thread_detail::commit_once_region(flag);
+    }
+  }
+#if !(defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x5130))
+  template<typename Function>
+  inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f)
+  {
+    if (thread_detail::enter_once_region(flag))
+    {
+      BOOST_TRY
+      {
+        f();
+      }
+      BOOST_CATCH (...)
+      {
+        thread_detail::rollback_once_region(flag);
+        BOOST_RETHROW
+      }
+      BOOST_CATCH_END
+      thread_detail::commit_once_region(flag);
+    }
+  }
+
+  template<typename Function, typename T1>
+  inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1)
+  {
+    if (thread_detail::enter_once_region(flag))
+    {
+      BOOST_TRY
+      {
+        BOOST_THREAD_INVOKE_RET_VOID(
+            thread_detail::decay_copy(boost::forward<Function>(f)),
+            thread_detail::decay_copy(boost::forward<T1>(p1))
+        ) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+      }
+      BOOST_CATCH (...)
+      {
+        thread_detail::rollback_once_region(flag);
+        BOOST_RETHROW
+      }
+      BOOST_CATCH_END
+      thread_detail::commit_once_region(flag);
+    }
+  }
+  template<typename Function, typename T1, typename T2>
+  inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1, BOOST_THREAD_RV_REF(T2) p2)
+  {
+    if (thread_detail::enter_once_region(flag))
+    {
+      BOOST_TRY
+      {
+        BOOST_THREAD_INVOKE_RET_VOID(
+            thread_detail::decay_copy(boost::forward<Function>(f)),
+            thread_detail::decay_copy(boost::forward<T1>(p1)),
+            thread_detail::decay_copy(boost::forward<T1>(p2))
+        ) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+      }
+      BOOST_CATCH (...)
+      {
+        thread_detail::rollback_once_region(flag);
+        BOOST_RETHROW
+      }
+      BOOST_CATCH_END
+      thread_detail::commit_once_region(flag);
+    }
+  }
+  template<typename Function, typename T1, typename T2, typename T3>
+  inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1, BOOST_THREAD_RV_REF(T2) p2, BOOST_THREAD_RV_REF(T3) p3)
+  {
+    if (thread_detail::enter_once_region(flag))
+    {
+      BOOST_TRY
+      {
+        BOOST_THREAD_INVOKE_RET_VOID(
+            thread_detail::decay_copy(boost::forward<Function>(f)),
+            thread_detail::decay_copy(boost::forward<T1>(p1)),
+            thread_detail::decay_copy(boost::forward<T1>(p2)),
+            thread_detail::decay_copy(boost::forward<T1>(p3))
+        ) BOOST_THREAD_INVOKE_RET_VOID_CALL;
+
+      }
+      BOOST_CATCH (...)
+      {
+        thread_detail::rollback_once_region(flag);
+        BOOST_RETHROW
+      }
+      BOOST_CATCH_END
+      thread_detail::commit_once_region(flag);
+    }
+  }
+
+#endif // __SUNPRO_CC
+
+#endif
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif
+

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/pthread_helpers.hpp

@@ -0,0 +1,187 @@
+#ifndef BOOST_THREAD_PTHREAD_PTHREAD_HELPERS_HPP
+#define BOOST_THREAD_PTHREAD_PTHREAD_HELPERS_HPP
+// Copyright (C) 2017
+// Vicente J. Botet Escriba
+//
+//  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)
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/throw_exception.hpp>
+#include <pthread.h>
+#include <errno.h>
+
+#include <boost/config/abi_prefix.hpp>
+
+#ifndef BOOST_THREAD_HAS_NO_EINTR_BUG
+#define BOOST_THREAD_HAS_EINTR_BUG
+#endif
+
+namespace boost
+{
+  namespace posix
+  {
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_mutex_init(pthread_mutex_t* m, const pthread_mutexattr_t* attr = NULL)
+    {
+      return ::pthread_mutex_init(m, attr);
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_cond_init(pthread_cond_t* c)
+    {
+#ifdef BOOST_THREAD_INTERNAL_CLOCK_IS_MONO
+      pthread_condattr_t attr;
+      int res = pthread_condattr_init(&attr);
+      if (res)
+      {
+        return res;
+      }
+      BOOST_VERIFY(!pthread_condattr_setclock(&attr, CLOCK_MONOTONIC));
+      res = ::pthread_cond_init(c, &attr);
+      BOOST_VERIFY(!pthread_condattr_destroy(&attr));
+      return res;
+#else
+      return ::pthread_cond_init(c, NULL);
+#endif
+    }
+
+#ifdef BOOST_THREAD_HAS_EINTR_BUG
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_mutex_destroy(pthread_mutex_t* m)
+    {
+      int ret;
+      do
+      {
+          ret = ::pthread_mutex_destroy(m);
+      } while (ret == EINTR);
+      return ret;
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_cond_destroy(pthread_cond_t* c)
+    {
+      int ret;
+      do
+      {
+          ret = ::pthread_cond_destroy(c);
+      } while (ret == EINTR);
+      return ret;
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_mutex_lock(pthread_mutex_t* m)
+    {
+      int ret;
+      do
+      {
+          ret = ::pthread_mutex_lock(m);
+      } while (ret == EINTR);
+      return ret;
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_mutex_trylock(pthread_mutex_t* m)
+    {
+      int ret;
+      do
+      {
+          ret = ::pthread_mutex_trylock(m);
+      } while (ret == EINTR);
+      return ret;
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_mutex_unlock(pthread_mutex_t* m)
+    {
+      int ret;
+      do
+      {
+          ret = ::pthread_mutex_unlock(m);
+      } while (ret == EINTR);
+      return ret;
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_cond_wait(pthread_cond_t* c, pthread_mutex_t* m)
+    {
+      int ret;
+      do
+      {
+          ret = ::pthread_cond_wait(c, m);
+      } while (ret == EINTR);
+      return ret;
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_cond_timedwait(pthread_cond_t* c, pthread_mutex_t* m, const struct timespec* t)
+    {
+      int ret;
+      do
+      {
+          ret = ::pthread_cond_timedwait(c, m, t);
+      } while (ret == EINTR);
+      return ret;
+    }
+#else
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_mutex_destroy(pthread_mutex_t* m)
+    {
+      return ::pthread_mutex_destroy(m);
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_cond_destroy(pthread_cond_t* c)
+    {
+      return ::pthread_cond_destroy(c);
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_mutex_lock(pthread_mutex_t* m)
+    {
+      return ::pthread_mutex_lock(m);
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_mutex_trylock(pthread_mutex_t* m)
+    {
+      return ::pthread_mutex_trylock(m);
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_mutex_unlock(pthread_mutex_t* m)
+    {
+      return ::pthread_mutex_unlock(m);
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_cond_wait(pthread_cond_t* c, pthread_mutex_t* m)
+    {
+      return ::pthread_cond_wait(c, m);
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_cond_timedwait(pthread_cond_t* c, pthread_mutex_t* m, const struct timespec* t)
+    {
+      return ::pthread_cond_timedwait(c, m, t);
+    }
+#endif
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_cond_signal(pthread_cond_t* c)
+    {
+      return ::pthread_cond_signal(c);
+    }
+
+    BOOST_FORCEINLINE BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+    int pthread_cond_broadcast(pthread_cond_t* c)
+    {
+      return ::pthread_cond_broadcast(c);
+    }
+  }
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/pthread_mutex_scoped_lock.hpp

@@ -0,0 +1,71 @@
+#ifndef BOOST_PTHREAD_MUTEX_SCOPED_LOCK_HPP
+#define BOOST_PTHREAD_MUTEX_SCOPED_LOCK_HPP
+//  (C) Copyright 2007-8 Anthony Williams
+//
+//  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)
+
+#include <pthread.h>
+#include <boost/assert.hpp>
+#include <boost/thread/pthread/pthread_helpers.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+    namespace pthread
+    {
+        class pthread_mutex_scoped_lock
+        {
+            pthread_mutex_t* m;
+            bool locked;
+        public:
+            explicit pthread_mutex_scoped_lock(pthread_mutex_t* m_) BOOST_NOEXCEPT:
+                m(m_),locked(true)
+            {
+                BOOST_VERIFY(!posix::pthread_mutex_lock(m));
+            }
+            void unlock() BOOST_NOEXCEPT
+            {
+                BOOST_VERIFY(!posix::pthread_mutex_unlock(m));
+                locked=false;
+            }
+            void unlock_if_locked() BOOST_NOEXCEPT
+            {
+              if(locked)
+              {
+                  unlock();
+              }
+            }
+            ~pthread_mutex_scoped_lock() BOOST_NOEXCEPT
+            {
+                if(locked)
+                {
+                    unlock();
+                }
+            }
+
+        };
+
+        class pthread_mutex_scoped_unlock
+        {
+            pthread_mutex_t* m;
+        public:
+            explicit pthread_mutex_scoped_unlock(pthread_mutex_t* m_) BOOST_NOEXCEPT:
+                m(m_)
+            {
+                BOOST_VERIFY(!posix::pthread_mutex_unlock(m));
+            }
+            ~pthread_mutex_scoped_unlock() BOOST_NOEXCEPT
+            {
+                BOOST_VERIFY(!posix::pthread_mutex_lock(m));
+            }
+
+        };
+    }
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/recursive_mutex.hpp

@@ -0,0 +1,436 @@
+#ifndef BOOST_THREAD_PTHREAD_RECURSIVE_MUTEX_HPP
+#define BOOST_THREAD_PTHREAD_RECURSIVE_MUTEX_HPP
+// (C) Copyright 2007-8 Anthony Williams
+// (C) Copyright 2011-2012 Vicente J. Botet Escriba
+// 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)
+
+#include <pthread.h>
+#include <boost/throw_exception.hpp>
+#include <boost/thread/exceptions.hpp>
+#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
+#include <boost/thread/lock_types.hpp>
+#endif
+#include <boost/thread/thread_time.hpp>
+#include <boost/assert.hpp>
+#ifndef _WIN32
+#include <unistd.h>
+#endif
+#include <boost/date_time/posix_time/conversion.hpp>
+#include <errno.h>
+#include <boost/thread/detail/platform_time.hpp>
+#include <boost/thread/pthread/pthread_mutex_scoped_lock.hpp>
+#include <boost/thread/pthread/pthread_helpers.hpp>
+#ifdef BOOST_THREAD_USES_CHRONO
+#include <boost/chrono/system_clocks.hpp>
+#include <boost/chrono/ceil.hpp>
+#endif
+#include <boost/thread/detail/delete.hpp>
+
+
+#if  defined BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE \
+ ||  defined __ANDROID__
+#define BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
+#endif
+
+#if defined BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE && defined BOOST_THREAD_USES_PTHREAD_TIMEDLOCK
+#define BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
+#endif
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+    class recursive_mutex
+    {
+    private:
+        pthread_mutex_t m;
+#ifndef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
+        pthread_cond_t cond;
+        bool is_locked;
+        pthread_t owner;
+        unsigned count;
+#endif
+    public:
+        BOOST_THREAD_NO_COPYABLE(recursive_mutex)
+        recursive_mutex()
+        {
+#ifdef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
+            pthread_mutexattr_t attr;
+
+            int const init_attr_res=pthread_mutexattr_init(&attr);
+            if(init_attr_res)
+            {
+                boost::throw_exception(thread_resource_error(init_attr_res, "boost:: recursive_mutex constructor failed in pthread_mutexattr_init"));
+            }
+            int const set_attr_res=pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
+            if(set_attr_res)
+            {
+                BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
+                boost::throw_exception(thread_resource_error(set_attr_res, "boost:: recursive_mutex constructor failed in pthread_mutexattr_settype"));
+            }
+
+            int const res=posix::pthread_mutex_init(&m,&attr);
+            if(res)
+            {
+                BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
+                boost::throw_exception(thread_resource_error(res, "boost:: recursive_mutex constructor failed in pthread_mutex_init"));
+            }
+            BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
+#else
+            int const res=posix::pthread_mutex_init(&m);
+            if(res)
+            {
+                boost::throw_exception(thread_resource_error(res, "boost:: recursive_mutex constructor failed in pthread_mutex_init"));
+            }
+            int const res2=posix::pthread_cond_init(&cond);
+            if(res2)
+            {
+                BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
+                boost::throw_exception(thread_resource_error(res2, "boost:: recursive_mutex constructor failed in pthread_cond_init"));
+            }
+            is_locked=false;
+            count=0;
+#endif
+        }
+        ~recursive_mutex()
+        {
+            BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
+#ifndef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
+            BOOST_VERIFY(!posix::pthread_cond_destroy(&cond));
+#endif
+        }
+
+#ifdef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
+        void lock()
+        {
+            BOOST_VERIFY(!posix::pthread_mutex_lock(&m));
+        }
+
+        void unlock()
+        {
+            BOOST_VERIFY(!posix::pthread_mutex_unlock(&m));
+        }
+
+        bool try_lock() BOOST_NOEXCEPT
+        {
+            int const res=posix::pthread_mutex_trylock(&m);
+            BOOST_ASSERT(!res || res==EBUSY);
+            return !res;
+        }
+#define BOOST_THREAD_DEFINES_RECURSIVE_MUTEX_NATIVE_HANDLE
+        typedef pthread_mutex_t* native_handle_type;
+        native_handle_type native_handle()
+        {
+            return &m;
+        }
+
+#else
+        void lock()
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            if(is_locked && pthread_equal(owner,pthread_self()))
+            {
+                ++count;
+                return;
+            }
+
+            while(is_locked)
+            {
+                BOOST_VERIFY(!posix::pthread_cond_wait(&cond,&m));
+            }
+            is_locked=true;
+            ++count;
+            owner=pthread_self();
+        }
+
+        void unlock()
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            if(!--count)
+            {
+                is_locked=false;
+            }
+            BOOST_VERIFY(!posix::pthread_cond_signal(&cond));
+        }
+
+        bool try_lock()
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            if(is_locked && !pthread_equal(owner,pthread_self()))
+            {
+                return false;
+            }
+            is_locked=true;
+            ++count;
+            owner=pthread_self();
+            return true;
+        }
+
+#endif
+
+#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
+        typedef unique_lock<recursive_mutex> scoped_lock;
+        typedef detail::try_lock_wrapper<recursive_mutex> scoped_try_lock;
+#endif
+    };
+
+    typedef recursive_mutex recursive_try_mutex;
+
+    class recursive_timed_mutex
+    {
+    private:
+        pthread_mutex_t m;
+#ifndef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
+        pthread_cond_t cond;
+        bool is_locked;
+        pthread_t owner;
+        unsigned count;
+#endif
+    public:
+        BOOST_THREAD_NO_COPYABLE(recursive_timed_mutex)
+        recursive_timed_mutex()
+        {
+#ifdef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
+            pthread_mutexattr_t attr;
+
+            int const init_attr_res=pthread_mutexattr_init(&attr);
+            if(init_attr_res)
+            {
+                boost::throw_exception(thread_resource_error(init_attr_res, "boost:: recursive_timed_mutex constructor failed in pthread_mutexattr_init"));
+            }
+            int const set_attr_res=pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
+            if(set_attr_res)
+            {
+                boost::throw_exception(thread_resource_error(set_attr_res, "boost:: recursive_timed_mutex constructor failed in pthread_mutexattr_settype"));
+            }
+
+            int const res=posix::pthread_mutex_init(&m,&attr);
+            if(res)
+            {
+                BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
+                boost::throw_exception(thread_resource_error(res, "boost:: recursive_timed_mutex constructor failed in pthread_mutex_init"));
+            }
+            BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
+#else
+            int const res=posix::pthread_mutex_init(&m);
+            if(res)
+            {
+                boost::throw_exception(thread_resource_error(res, "boost:: recursive_timed_mutex constructor failed in pthread_mutex_init"));
+            }
+            int const res2=posix::pthread_cond_init(&cond);
+            if(res2)
+            {
+                BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
+                boost::throw_exception(thread_resource_error(res2, "boost:: recursive_timed_mutex constructor failed in pthread_cond_init"));
+            }
+            is_locked=false;
+            count=0;
+#endif
+        }
+        ~recursive_timed_mutex()
+        {
+            BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
+#ifndef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
+            BOOST_VERIFY(!posix::pthread_cond_destroy(&cond));
+#endif
+        }
+
+#if defined BOOST_THREAD_USES_DATETIME
+        template<typename TimeDuration>
+        bool timed_lock(TimeDuration const & relative_time)
+        {
+            if (relative_time.is_pos_infinity())
+            {
+                lock();
+                return true;
+            }
+            if (relative_time.is_special())
+            {
+                return true;
+            }
+            detail::platform_duration d(relative_time);
+#if defined(BOOST_THREAD_HAS_MONO_CLOCK) && !defined(BOOST_THREAD_INTERNAL_CLOCK_IS_MONO)
+            const detail::mono_platform_timepoint ts(detail::mono_platform_clock::now() + d);
+            d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+            while ( ! do_try_lock_until(detail::internal_platform_clock::now() + d) )
+            {
+              d = ts - detail::mono_platform_clock::now();
+              if ( d <= detail::platform_duration::zero() ) return false; // timeout occurred
+              d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+            }
+            return true;
+#else
+            return do_try_lock_until(detail::internal_platform_clock::now() + d);
+#endif
+        }
+#endif
+
+#ifdef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
+        void lock()
+        {
+            BOOST_VERIFY(!posix::pthread_mutex_lock(&m));
+        }
+
+        void unlock()
+        {
+            BOOST_VERIFY(!posix::pthread_mutex_unlock(&m));
+        }
+
+        bool try_lock()
+        {
+            int const res=posix::pthread_mutex_trylock(&m);
+            BOOST_ASSERT(!res || res==EBUSY);
+            return !res;
+        }
+    private:
+        bool do_try_lock_until(detail::internal_platform_timepoint const &timeout)
+        {
+            int const res=pthread_mutex_timedlock(&m,&timeout.getTs());
+            BOOST_ASSERT(!res || res==ETIMEDOUT);
+            return !res;
+        }
+
+    public:
+
+#else
+        void lock()
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            if(is_locked && pthread_equal(owner,pthread_self()))
+            {
+                ++count;
+                return;
+            }
+
+            while(is_locked)
+            {
+                BOOST_VERIFY(!posix::pthread_cond_wait(&cond,&m));
+            }
+            is_locked=true;
+            ++count;
+            owner=pthread_self();
+        }
+
+        void unlock()
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            if(!--count)
+            {
+                is_locked=false;
+            }
+            BOOST_VERIFY(!posix::pthread_cond_signal(&cond));
+        }
+
+        bool try_lock() BOOST_NOEXCEPT
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            if(is_locked && !pthread_equal(owner,pthread_self()))
+            {
+                return false;
+            }
+            is_locked=true;
+            ++count;
+            owner=pthread_self();
+            return true;
+        }
+
+    private:
+        bool do_try_lock_until(detail::internal_platform_timepoint const &timeout)
+        {
+            boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
+            if(is_locked && pthread_equal(owner,pthread_self()))
+            {
+                ++count;
+                return true;
+            }
+            while(is_locked)
+            {
+                int const cond_res=posix::pthread_cond_timedwait(&cond,&m,&timeout.getTs());
+                if(cond_res==ETIMEDOUT)
+                {
+                    break;
+                }
+                BOOST_ASSERT(!cond_res);
+            }
+            if(is_locked)
+            {
+                return false;
+            }
+            is_locked=true;
+            ++count;
+            owner=pthread_self();
+            return true;
+        }
+    public:
+
+#endif
+
+#if defined BOOST_THREAD_USES_DATETIME
+        bool timed_lock(system_time const & abs_time)
+        {
+            const detail::real_platform_timepoint ts(abs_time);
+#if defined BOOST_THREAD_INTERNAL_CLOCK_IS_MONO
+            detail::platform_duration d(ts - detail::real_platform_clock::now());
+            d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+            while ( ! do_try_lock_until(detail::internal_platform_clock::now() + d) )
+            {
+              d = ts - detail::real_platform_clock::now();
+              if ( d <= detail::platform_duration::zero() ) return false; // timeout occurred
+              d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+            }
+            return true;
+#else
+            return do_try_lock_until(ts);
+#endif
+        }
+#endif
+#ifdef BOOST_THREAD_USES_CHRONO
+        template <class Rep, class Period>
+        bool try_lock_for(const chrono::duration<Rep, Period>& rel_time)
+        {
+          return try_lock_until(chrono::steady_clock::now() + rel_time);
+        }
+        template <class Clock, class Duration>
+        bool try_lock_until(const chrono::time_point<Clock, Duration>& t)
+        {
+          typedef typename common_type<Duration, typename Clock::duration>::type common_duration;
+          common_duration d(t - Clock::now());
+          d = (std::min)(d, common_duration(chrono::milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS)));
+          while ( ! try_lock_until(detail::internal_chrono_clock::now() + d))
+          {
+              d = t - Clock::now();
+              if ( d <= common_duration::zero() ) return false; // timeout occurred
+              d = (std::min)(d, common_duration(chrono::milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS)));
+          }
+          return true;
+
+        }
+        template <class Duration>
+        bool try_lock_until(const chrono::time_point<detail::internal_chrono_clock, Duration>& t)
+        {
+          detail::internal_platform_timepoint ts(t);
+          return do_try_lock_until(ts);
+        }
+#endif
+
+#define BOOST_THREAD_DEFINES_RECURSIVE_TIMED_MUTEX_NATIVE_HANDLE
+        typedef pthread_mutex_t* native_handle_type;
+        native_handle_type native_handle()
+        {
+            return &m;
+        }
+
+#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
+        typedef unique_lock<recursive_timed_mutex> scoped_timed_lock;
+        typedef detail::try_lock_wrapper<recursive_timed_mutex> scoped_try_lock;
+        typedef scoped_timed_lock scoped_lock;
+#endif
+    };
+
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/shared_mutex.hpp

@@ -0,0 +1,642 @@
+#ifndef BOOST_THREAD_PTHREAD_SHARED_MUTEX_HPP
+#define BOOST_THREAD_PTHREAD_SHARED_MUTEX_HPP
+
+//  (C) Copyright 2006-8 Anthony Williams
+//  (C) Copyright 2012 Vicente J. Botet Escriba
+//
+//  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)
+
+#include <boost/assert.hpp>
+#include <boost/bind/bind.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/thread/mutex.hpp>
+#include <boost/thread/condition_variable.hpp>
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+#include <boost/thread/detail/thread_interruption.hpp>
+#endif
+#ifdef BOOST_THREAD_USES_CHRONO
+#include <boost/chrono/system_clocks.hpp>
+#include <boost/chrono/ceil.hpp>
+#endif
+#include <boost/thread/detail/delete.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+    class shared_mutex
+    {
+    private:
+        class state_data
+        {
+        public:
+            state_data () :
+              shared_count(0),
+              exclusive(false),
+              upgrade(false),
+              exclusive_waiting_blocked(false)
+            {}
+
+            void assert_free() const
+            {
+                BOOST_ASSERT( ! exclusive );
+                BOOST_ASSERT( ! upgrade );
+                BOOST_ASSERT( shared_count==0 );
+            }
+
+            void assert_locked() const
+            {
+                BOOST_ASSERT( exclusive );
+                BOOST_ASSERT( shared_count==0 );
+                BOOST_ASSERT( ! upgrade );
+            }
+
+            void assert_lock_shared () const
+            {
+                BOOST_ASSERT( ! exclusive );
+                BOOST_ASSERT( shared_count>0 );
+                //BOOST_ASSERT( (! upgrade) || (shared_count>1));
+                // if upgraded there are at least 2 threads sharing the mutex,
+                // except when unlock_upgrade_and_lock has decreased the number of readers but has not taken yet exclusive ownership.
+            }
+
+            void assert_lock_upgraded () const
+            {
+                BOOST_ASSERT( ! exclusive );
+                BOOST_ASSERT(  upgrade );
+                BOOST_ASSERT(  shared_count>0 );
+            }
+
+            void assert_lock_not_upgraded () const
+            {
+                BOOST_ASSERT(  ! upgrade );
+            }
+
+            bool can_lock () const
+            {
+                return ! (shared_count || exclusive);
+            }
+
+            void lock ()
+            {
+                exclusive = true;
+            }
+
+            void unlock ()
+            {
+                exclusive = false;
+                exclusive_waiting_blocked = false;
+            }
+
+            bool can_lock_shared () const
+            {
+                return ! (exclusive || exclusive_waiting_blocked);
+            }
+
+            bool no_shared () const
+            {
+                return shared_count==0;
+            }
+
+            bool one_shared () const
+            {
+                return shared_count==1;
+            }
+
+            void lock_shared ()
+            {
+                ++shared_count;
+            }
+
+
+            void unlock_shared ()
+            {
+                --shared_count;
+            }
+
+            void lock_upgrade ()
+            {
+                ++shared_count;
+                upgrade=true;
+            }
+            bool can_lock_upgrade () const
+            {
+                return ! (exclusive || exclusive_waiting_blocked || upgrade);
+            }
+
+            void unlock_upgrade ()
+            {
+                upgrade=false;
+                --shared_count;
+            }
+
+        //private:
+            unsigned shared_count;
+            bool exclusive;
+            bool upgrade;
+            bool exclusive_waiting_blocked;
+        };
+
+
+
+        state_data state;
+        boost::mutex state_change;
+        boost::condition_variable shared_cond;
+        boost::condition_variable exclusive_cond;
+        boost::condition_variable upgrade_cond;
+
+        void release_waiters()
+        {
+            exclusive_cond.notify_one();
+            shared_cond.notify_all();
+        }
+
+    public:
+
+        BOOST_THREAD_NO_COPYABLE(shared_mutex)
+
+        shared_mutex()
+        {
+        }
+
+        ~shared_mutex()
+        {
+        }
+
+        void lock_shared()
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            boost::this_thread::disable_interruption do_not_disturb;
+#endif
+            boost::unique_lock<boost::mutex> lk(state_change);
+            shared_cond.wait(lk, boost::bind(&state_data::can_lock_shared, boost::ref(state)));
+            state.lock_shared();
+        }
+
+        bool try_lock_shared()
+        {
+            boost::unique_lock<boost::mutex> lk(state_change);
+
+            if(!state.can_lock_shared())
+            {
+                return false;
+            }
+            state.lock_shared();
+            return true;
+        }
+
+#if defined BOOST_THREAD_USES_DATETIME
+        bool timed_lock_shared(system_time const& timeout)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            boost::this_thread::disable_interruption do_not_disturb;
+#endif
+            boost::unique_lock<boost::mutex> lk(state_change);
+            if(!shared_cond.timed_wait(lk, timeout, boost::bind(&state_data::can_lock_shared, boost::ref(state))))
+            {
+                return false;
+            }
+            state.lock_shared();
+            return true;
+        }
+
+        template<typename TimeDuration>
+        bool timed_lock_shared(TimeDuration const & relative_time)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            boost::this_thread::disable_interruption do_not_disturb;
+#endif
+            boost::unique_lock<boost::mutex> lk(state_change);
+            if(!shared_cond.timed_wait(lk, relative_time, boost::bind(&state_data::can_lock_shared, boost::ref(state))))
+            {
+                return false;
+            }
+            state.lock_shared();
+            return true;
+        }
+#endif
+#ifdef BOOST_THREAD_USES_CHRONO
+        template <class Rep, class Period>
+        bool try_lock_shared_for(const chrono::duration<Rep, Period>& rel_time)
+        {
+          return try_lock_shared_until(chrono::steady_clock::now() + rel_time);
+        }
+        template <class Clock, class Duration>
+        bool try_lock_shared_until(const chrono::time_point<Clock, Duration>& abs_time)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+          boost::this_thread::disable_interruption do_not_disturb;
+#endif
+          boost::unique_lock<boost::mutex> lk(state_change);
+          if(!shared_cond.wait_until(lk, abs_time, boost::bind(&state_data::can_lock_shared, boost::ref(state))))
+          {
+              return false;
+          }
+          state.lock_shared();
+          return true;
+        }
+#endif
+        void unlock_shared()
+        {
+            boost::unique_lock<boost::mutex> lk(state_change);
+            state.assert_lock_shared();
+            state.unlock_shared();
+            if (state.no_shared())
+            {
+                if (state.upgrade)
+                {
+                    // As there is a thread doing a unlock_upgrade_and_lock that is waiting for state.no_shared()
+                    // avoid other threads to lock, lock_upgrade or lock_shared, so only this thread is notified.
+                    state.upgrade=false;
+                    state.exclusive=true;
+                    //lk.unlock();
+                    upgrade_cond.notify_one();
+                }
+                else
+                {
+                    state.exclusive_waiting_blocked=false;
+                    //lk.unlock();
+                }
+                release_waiters();
+            }
+        }
+
+        void lock()
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            boost::this_thread::disable_interruption do_not_disturb;
+#endif
+            boost::unique_lock<boost::mutex> lk(state_change);
+            state.exclusive_waiting_blocked=true;
+            exclusive_cond.wait(lk, boost::bind(&state_data::can_lock, boost::ref(state)));
+            state.exclusive=true;
+        }
+
+#if defined BOOST_THREAD_USES_DATETIME
+        bool timed_lock(system_time const& timeout)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            boost::this_thread::disable_interruption do_not_disturb;
+#endif
+            boost::unique_lock<boost::mutex> lk(state_change);
+            state.exclusive_waiting_blocked=true;
+            if(!exclusive_cond.timed_wait(lk, timeout, boost::bind(&state_data::can_lock, boost::ref(state))))
+            {
+                state.exclusive_waiting_blocked=false;
+                release_waiters();
+                return false;
+            }
+            state.exclusive=true;
+            return true;
+        }
+
+        template<typename TimeDuration>
+        bool timed_lock(TimeDuration const & relative_time)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            boost::this_thread::disable_interruption do_not_disturb;
+#endif
+            boost::unique_lock<boost::mutex> lk(state_change);
+            state.exclusive_waiting_blocked=true;
+            if(!exclusive_cond.timed_wait(lk, relative_time, boost::bind(&state_data::can_lock, boost::ref(state))))
+            {
+                state.exclusive_waiting_blocked=false;
+                release_waiters();
+                return false;
+            }
+            state.exclusive=true;
+            return true;
+        }
+#endif
+#ifdef BOOST_THREAD_USES_CHRONO
+        template <class Rep, class Period>
+        bool try_lock_for(const chrono::duration<Rep, Period>& rel_time)
+        {
+          return try_lock_until(chrono::steady_clock::now() + rel_time);
+        }
+        template <class Clock, class Duration>
+        bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+          boost::this_thread::disable_interruption do_not_disturb;
+#endif
+          boost::unique_lock<boost::mutex> lk(state_change);
+          state.exclusive_waiting_blocked=true;
+          if(!exclusive_cond.wait_until(lk, abs_time, boost::bind(&state_data::can_lock, boost::ref(state))))
+          {
+              state.exclusive_waiting_blocked=false;
+              release_waiters();
+              return false;
+          }
+          state.exclusive=true;
+          return true;
+        }
+#endif
+
+        bool try_lock()
+        {
+            boost::unique_lock<boost::mutex> lk(state_change);
+            if(!state.can_lock())
+            {
+                return false;
+            }
+            state.exclusive=true;
+            return true;
+        }
+
+        void unlock()
+        {
+            boost::unique_lock<boost::mutex> lk(state_change);
+            state.assert_locked();
+            state.exclusive=false;
+            state.exclusive_waiting_blocked=false;
+            state.assert_free();
+            release_waiters();
+        }
+
+        void lock_upgrade()
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            boost::this_thread::disable_interruption do_not_disturb;
+#endif
+            boost::unique_lock<boost::mutex> lk(state_change);
+            shared_cond.wait(lk, boost::bind(&state_data::can_lock_upgrade, boost::ref(state)));
+            state.lock_shared();
+            state.upgrade=true;
+        }
+
+#if defined BOOST_THREAD_USES_DATETIME
+        bool timed_lock_upgrade(system_time const& timeout)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            boost::this_thread::disable_interruption do_not_disturb;
+#endif
+            boost::unique_lock<boost::mutex> lk(state_change);
+            if(!shared_cond.timed_wait(lk, timeout, boost::bind(&state_data::can_lock_upgrade, boost::ref(state))))
+            {
+                return false;
+            }
+            state.lock_shared();
+            state.upgrade=true;
+            return true;
+        }
+
+        template<typename TimeDuration>
+        bool timed_lock_upgrade(TimeDuration const & relative_time)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            boost::this_thread::disable_interruption do_not_disturb;
+#endif
+            boost::unique_lock<boost::mutex> lk(state_change);
+            if(!shared_cond.timed_wait(lk, relative_time, boost::bind(&state_data::can_lock_upgrade, boost::ref(state))))
+            {
+                return false;
+            }
+            state.lock_shared();
+            state.upgrade=true;
+            return true;
+        }
+#endif
+#ifdef BOOST_THREAD_USES_CHRONO
+        template <class Rep, class Period>
+        bool try_lock_upgrade_for(const chrono::duration<Rep, Period>& rel_time)
+        {
+          return try_lock_upgrade_until(chrono::steady_clock::now() + rel_time);
+        }
+        template <class Clock, class Duration>
+        bool try_lock_upgrade_until(const chrono::time_point<Clock, Duration>& abs_time)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+          boost::this_thread::disable_interruption do_not_disturb;
+#endif
+          boost::unique_lock<boost::mutex> lk(state_change);
+          if(!shared_cond.wait_until(lk, abs_time, boost::bind(&state_data::can_lock_upgrade, boost::ref(state))))
+          {
+              return false;
+          }
+          state.lock_shared();
+          state.upgrade=true;
+          return true;
+        }
+#endif
+        bool try_lock_upgrade()
+        {
+            boost::unique_lock<boost::mutex> lk(state_change);
+            if(!state.can_lock_upgrade())
+            {
+                return false;
+            }
+            state.lock_shared();
+            state.upgrade=true;
+            state.assert_lock_upgraded();
+            return true;
+        }
+
+        void unlock_upgrade()
+        {
+            boost::unique_lock<boost::mutex> lk(state_change);
+            //state.upgrade=false;
+            state.unlock_upgrade();
+            if(state.no_shared())
+            {
+                state.exclusive_waiting_blocked=false;
+                release_waiters();
+            } else {
+                shared_cond.notify_all();
+            }
+        }
+
+        // Upgrade <-> Exclusive
+        void unlock_upgrade_and_lock()
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            boost::this_thread::disable_interruption do_not_disturb;
+#endif
+            boost::unique_lock<boost::mutex> lk(state_change);
+            state.assert_lock_upgraded();
+            state.unlock_shared();
+            upgrade_cond.wait(lk, boost::bind(&state_data::no_shared, boost::ref(state)));
+            state.upgrade=false;
+            state.exclusive=true;
+            state.assert_locked();
+        }
+
+        void unlock_and_lock_upgrade()
+        {
+            boost::unique_lock<boost::mutex> lk(state_change);
+            state.assert_locked();
+            state.exclusive=false;
+            state.upgrade=true;
+            state.lock_shared();
+            state.exclusive_waiting_blocked=false;
+            state.assert_lock_upgraded();
+            release_waiters();
+        }
+
+        bool try_unlock_upgrade_and_lock()
+        {
+          boost::unique_lock<boost::mutex> lk(state_change);
+          state.assert_lock_upgraded();
+          if(    !state.exclusive
+              && !state.exclusive_waiting_blocked
+              && state.upgrade
+              && state.shared_count==1)
+          {
+            state.shared_count=0;
+            state.exclusive=true;
+            state.upgrade=false;
+            state.assert_locked();
+            return true;
+          }
+          return false;
+        }
+#ifdef BOOST_THREAD_USES_CHRONO
+        template <class Rep, class Period>
+        bool
+        try_unlock_upgrade_and_lock_for(
+                                const chrono::duration<Rep, Period>& rel_time)
+        {
+          return try_unlock_upgrade_and_lock_until(
+                                 chrono::steady_clock::now() + rel_time);
+        }
+        template <class Clock, class Duration>
+        bool
+        try_unlock_upgrade_and_lock_until(
+                          const chrono::time_point<Clock, Duration>& abs_time)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+          boost::this_thread::disable_interruption do_not_disturb;
+#endif
+          boost::unique_lock<boost::mutex> lk(state_change);
+          state.assert_lock_upgraded();
+          if(!shared_cond.wait_until(lk, abs_time, boost::bind(&state_data::one_shared, boost::ref(state))))
+          {
+              return false;
+          }
+          state.upgrade=false;
+          state.exclusive=true;
+          state.exclusive_waiting_blocked=false;
+          state.shared_count=0;
+          return true;
+        }
+#endif
+
+        // Shared <-> Exclusive
+        void unlock_and_lock_shared()
+        {
+            boost::unique_lock<boost::mutex> lk(state_change);
+            state.assert_locked();
+            state.exclusive=false;
+            state.lock_shared();
+            state.exclusive_waiting_blocked=false;
+            release_waiters();
+        }
+
+#ifdef BOOST_THREAD_PROVIDES_SHARED_MUTEX_UPWARDS_CONVERSIONS
+        bool try_unlock_shared_and_lock()
+        {
+          boost::unique_lock<boost::mutex> lk(state_change);
+          state.assert_lock_shared();
+          if(    !state.exclusive
+              && !state.exclusive_waiting_blocked
+              && !state.upgrade
+              && state.shared_count==1)
+          {
+            state.shared_count=0;
+            state.exclusive=true;
+            return true;
+          }
+          return false;
+        }
+#ifdef BOOST_THREAD_USES_CHRONO
+        template <class Rep, class Period>
+            bool
+            try_unlock_shared_and_lock_for(
+                                const chrono::duration<Rep, Period>& rel_time)
+        {
+          return try_unlock_shared_and_lock_until(
+                                 chrono::steady_clock::now() + rel_time);
+        }
+        template <class Clock, class Duration>
+            bool
+            try_unlock_shared_and_lock_until(
+                          const chrono::time_point<Clock, Duration>& abs_time)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+          boost::this_thread::disable_interruption do_not_disturb;
+#endif
+          boost::unique_lock<boost::mutex> lk(state_change);
+          state.assert_lock_shared();
+          if(!shared_cond.wait_until(lk, abs_time, boost::bind(&state_data::one_shared, boost::ref(state))))
+          {
+              return false;
+          }
+          state.upgrade=false;
+          state.exclusive=true;
+          state.exclusive_waiting_blocked=false;
+          state.shared_count=0;
+          return true;
+        }
+#endif
+#endif
+
+        // Shared <-> Upgrade
+        void unlock_upgrade_and_lock_shared()
+        {
+            boost::unique_lock<boost::mutex> lk(state_change);
+            state.assert_lock_upgraded();
+            state.upgrade=false;
+            state.exclusive_waiting_blocked=false;
+            release_waiters();
+        }
+
+#ifdef BOOST_THREAD_PROVIDES_SHARED_MUTEX_UPWARDS_CONVERSIONS
+        bool try_unlock_shared_and_lock_upgrade()
+        {
+          boost::unique_lock<boost::mutex> lk(state_change);
+          state.assert_lock_shared();
+          if(state.can_lock_upgrade())
+          {
+            state.upgrade=true;
+            return true;
+          }
+          return false;
+        }
+#ifdef BOOST_THREAD_USES_CHRONO
+        template <class Rep, class Period>
+            bool
+            try_unlock_shared_and_lock_upgrade_for(
+                                const chrono::duration<Rep, Period>& rel_time)
+        {
+          return try_unlock_shared_and_lock_upgrade_until(
+                                 chrono::steady_clock::now() + rel_time);
+        }
+        template <class Clock, class Duration>
+            bool
+            try_unlock_shared_and_lock_upgrade_until(
+                          const chrono::time_point<Clock, Duration>& abs_time)
+        {
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+          boost::this_thread::disable_interruption do_not_disturb;
+#endif
+          boost::unique_lock<boost::mutex> lk(state_change);
+          state.assert_lock_shared();
+          if(!exclusive_cond.wait_until(lk, abs_time, boost::bind(&state_data::can_lock_upgrade, boost::ref(state))))
+          {
+              return false;
+          }
+          state.upgrade=true;
+          return true;
+        }
+#endif
+#endif
+    };
+
+    typedef shared_mutex upgrade_mutex;
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/thread_data.hpp

@@ -0,0 +1,408 @@
+#ifndef BOOST_THREAD_PTHREAD_THREAD_DATA_HPP
+#define BOOST_THREAD_PTHREAD_THREAD_DATA_HPP
+// 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
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/exceptions.hpp>
+#include <boost/thread/lock_guard.hpp>
+#include <boost/thread/lock_types.hpp>
+#include <boost/thread/mutex.hpp>
+#include <boost/thread/pthread/condition_variable_fwd.hpp>
+#include <boost/thread/pthread/pthread_helpers.hpp>
+
+#include <boost/shared_ptr.hpp>
+#include <boost/enable_shared_from_this.hpp>
+#include <boost/assert.hpp>
+#include <boost/thread/detail/platform_time.hpp>
+#ifdef BOOST_THREAD_USES_CHRONO
+#include <boost/chrono/system_clocks.hpp>
+#endif
+
+#include <map>
+#include <vector>
+#include <utility>
+
+#if defined(__ANDROID__)
+# ifndef PAGE_SIZE
+#  define PAGE_SIZE 4096
+# endif
+#endif
+
+#include <pthread.h>
+#include <unistd.h>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+    class thread_attributes {
+    public:
+        thread_attributes() BOOST_NOEXCEPT {
+            int res = pthread_attr_init(&val_);
+            BOOST_VERIFY(!res && "pthread_attr_init failed");
+        }
+        ~thread_attributes() {
+          int res = pthread_attr_destroy(&val_);
+          BOOST_VERIFY(!res && "pthread_attr_destroy failed");
+        }
+        // stack
+        void set_stack_size(std::size_t size) BOOST_NOEXCEPT {
+          if (size==0) return;
+#ifdef BOOST_THREAD_USES_GETPAGESIZE
+          std::size_t page_size = getpagesize();
+#else
+          std::size_t page_size = ::sysconf( _SC_PAGESIZE);
+#endif
+#ifdef PTHREAD_STACK_MIN
+          if (size<static_cast<std::size_t>(PTHREAD_STACK_MIN)) size=PTHREAD_STACK_MIN;
+#endif
+          size = ((size+page_size-1)/page_size)*page_size;
+          int res = pthread_attr_setstacksize(&val_, size);
+          BOOST_VERIFY(!res && "pthread_attr_setstacksize failed");
+        }
+
+        std::size_t get_stack_size() const BOOST_NOEXCEPT {
+            std::size_t size;
+            int res = pthread_attr_getstacksize(&val_, &size);
+            BOOST_VERIFY(!res && "pthread_attr_getstacksize failed");
+            return size;
+        }
+#define BOOST_THREAD_DEFINES_THREAD_ATTRIBUTES_NATIVE_HANDLE
+
+        typedef pthread_attr_t native_handle_type;
+        native_handle_type* native_handle() BOOST_NOEXCEPT {
+          return &val_;
+        }
+        const native_handle_type* native_handle() const BOOST_NOEXCEPT {
+          return &val_;
+        }
+
+    private:
+        pthread_attr_t val_;
+    };
+
+    class thread;
+
+    namespace detail
+    {
+        struct shared_state_base;
+        struct tss_cleanup_function;
+        struct thread_exit_callback_node;
+        struct tss_data_node
+        {
+            typedef void(*cleanup_func_t)(void*);
+            typedef void(*cleanup_caller_t)(cleanup_func_t, void*);
+
+            cleanup_caller_t caller;
+            cleanup_func_t func;
+            void* value;
+
+            tss_data_node(cleanup_caller_t caller_,cleanup_func_t func_,void* value_):
+                caller(caller_),func(func_),value(value_)
+            {}
+        };
+
+        struct thread_data_base;
+        typedef boost::shared_ptr<thread_data_base> thread_data_ptr;
+
+        struct BOOST_THREAD_DECL thread_data_base:
+            enable_shared_from_this<thread_data_base>
+        {
+            thread_data_ptr self;
+            pthread_t thread_handle;
+            boost::mutex data_mutex;
+            boost::condition_variable done_condition;
+            bool done;
+            bool join_started;
+            bool joined;
+            boost::detail::thread_exit_callback_node* thread_exit_callbacks;
+            std::map<void const*,boost::detail::tss_data_node> tss_data;
+
+//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            // These data must be at the end so that the access to the other fields doesn't change
+            // when BOOST_THREAD_PROVIDES_INTERRUPTIONS is defined.
+            // Another option is to have them always
+            pthread_mutex_t* cond_mutex;
+            pthread_cond_t* current_cond;
+//#endif
+            typedef std::vector<std::pair<condition_variable*, mutex*>
+            //, hidden_allocator<std::pair<condition_variable*, mutex*> >
+            > notify_list_t;
+            notify_list_t notify;
+
+//#ifndef BOOST_NO_EXCEPTIONS
+            typedef std::vector<shared_ptr<shared_state_base> > async_states_t;
+            async_states_t async_states_;
+//#endif
+//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+            // These data must be at the end so that the access to the other fields doesn't change
+            // when BOOST_THREAD_PROVIDES_INTERRUPTIONS is defined.
+            // Another option is to have them always
+            bool interrupt_enabled;
+            bool interrupt_requested;
+//#endif
+            thread_data_base():
+                thread_handle(0),
+                done(false),join_started(false),joined(false),
+                thread_exit_callbacks(0),
+//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+                cond_mutex(0),
+                current_cond(0),
+//#endif
+                notify()
+//#ifndef BOOST_NO_EXCEPTIONS
+                , async_states_()
+//#endif
+//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+                , interrupt_enabled(true)
+                , interrupt_requested(false)
+//#endif
+            {}
+            virtual ~thread_data_base();
+
+            typedef pthread_t native_handle_type;
+
+            virtual void run()=0;
+            virtual void notify_all_at_thread_exit(condition_variable* cv, mutex* m)
+            {
+              notify.push_back(std::pair<condition_variable*, mutex*>(cv, m));
+            }
+
+//#ifndef BOOST_NO_EXCEPTIONS
+            void make_ready_at_thread_exit(shared_ptr<shared_state_base> as)
+            {
+              async_states_.push_back(as);
+            }
+//#endif
+        };
+
+        BOOST_THREAD_DECL thread_data_base* get_current_thread_data();
+
+#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
+        class interruption_checker
+        {
+            thread_data_base* const thread_info;
+            pthread_mutex_t* m;
+            bool set;
+            bool done;
+
+            void check_for_interruption()
+            {
+#ifndef BOOST_NO_EXCEPTIONS
+                if(thread_info->interrupt_requested)
+                {
+                    thread_info->interrupt_requested=false;
+                    throw thread_interrupted(); // BOOST_NO_EXCEPTIONS protected
+                }
+#endif
+            }
+
+            void operator=(interruption_checker&);
+        public:
+            explicit interruption_checker(pthread_mutex_t* cond_mutex,pthread_cond_t* cond):
+                thread_info(detail::get_current_thread_data()),m(cond_mutex),
+                set(thread_info && thread_info->interrupt_enabled), done(false)
+            {
+                if(set)
+                {
+                    lock_guard<mutex> guard(thread_info->data_mutex);
+                    check_for_interruption();
+                    thread_info->cond_mutex=cond_mutex;
+                    thread_info->current_cond=cond;
+                    BOOST_VERIFY(!posix::pthread_mutex_lock(m));
+                }
+                else
+                {
+                    BOOST_VERIFY(!posix::pthread_mutex_lock(m));
+                }
+            }
+            void unlock_if_locked()
+            {
+              if ( ! done) {
+                if (set)
+                {
+                    BOOST_VERIFY(!posix::pthread_mutex_unlock(m));
+                    lock_guard<mutex> guard(thread_info->data_mutex);
+                    thread_info->cond_mutex=NULL;
+                    thread_info->current_cond=NULL;
+                }
+                else
+                {
+                    BOOST_VERIFY(!posix::pthread_mutex_unlock(m));
+                }
+                done = true;
+              }
+            }
+
+            ~interruption_checker() BOOST_NOEXCEPT_IF(false)
+            {
+                unlock_if_locked();
+            }
+        };
+#endif
+    }
+
+    namespace this_thread
+    {
+        void BOOST_THREAD_DECL yield() BOOST_NOEXCEPT;
+
+        namespace hidden
+        {
+          inline bool always_false()
+          {
+            return false;
+          }
+        }
+
+#if defined BOOST_THREAD_USES_DATETIME
+#ifdef __DECXXX
+        /// Workaround of DECCXX issue of incorrect template substitution
+        template<>
+#endif
+        inline void sleep(system_time const& abs_time)
+        {
+          mutex mx;
+          unique_lock<mutex> lock(mx);
+          condition_variable cond;
+          cond.timed_wait(lock, abs_time, hidden::always_false);
+        }
+
+        template<typename TimeDuration>
+        void sleep(TimeDuration const& rel_time)
+        {
+          mutex mx;
+          unique_lock<mutex> lock(mx);
+          condition_variable cond;
+          cond.timed_wait(lock, rel_time, hidden::always_false);
+        }
+#endif
+
+#ifdef BOOST_THREAD_USES_CHRONO
+        template <class Clock, class Duration>
+        void sleep_until(const chrono::time_point<Clock, Duration>& t)
+        {
+          mutex mut;
+          unique_lock<mutex> lk(mut);
+          condition_variable cv;
+          cv.wait_until(lk, t, hidden::always_false);
+        }
+
+        template <class Rep, class Period>
+        void sleep_for(const chrono::duration<Rep, Period>& d)
+        {
+          mutex mut;
+          unique_lock<mutex> lk(mut);
+          condition_variable cv;
+          cv.wait_for(lk, d, hidden::always_false);
+        }
+#endif
+
+        namespace no_interruption_point
+        {
+#if defined BOOST_THREAD_SLEEP_FOR_IS_STEADY
+// Use pthread_delay_np or nanosleep when available
+// because they do not provide an interruption point.
+
+          namespace hidden
+          {
+            void BOOST_THREAD_DECL sleep_for_internal(const detail::platform_duration& ts);
+          }
+
+#if defined BOOST_THREAD_USES_DATETIME
+#ifdef __DECXXX
+          /// Workaround of DECCXX issue of incorrect template substitution
+          template<>
+#endif
+          inline void sleep(system_time const& abs_time)
+          {
+            const detail::real_platform_timepoint ts(abs_time);
+            detail::platform_duration d(ts - detail::real_platform_clock::now());
+            while (d > detail::platform_duration::zero())
+            {
+              d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
+              hidden::sleep_for_internal(d);
+              d = ts - detail::real_platform_clock::now();
+            }
+          }
+
+          template<typename TimeDuration>
+          void sleep(TimeDuration const& rel_time)
+          {
+            hidden::sleep_for_internal(detail::platform_duration(rel_time));
+          }
+#endif
+
+#ifdef BOOST_THREAD_USES_CHRONO
+          template <class Rep, class Period>
+          void sleep_for(const chrono::duration<Rep, Period>& d)
+          {
+            hidden::sleep_for_internal(detail::platform_duration(d));
+          }
+
+          template <class Duration>
+          void sleep_until(const chrono::time_point<chrono::steady_clock, Duration>& t)
+          {
+            sleep_for(t - chrono::steady_clock::now());
+          }
+
+          template <class Clock, class Duration>
+          void sleep_until(const chrono::time_point<Clock, Duration>& t)
+          {
+            typedef typename common_type<Duration, typename Clock::duration>::type common_duration;
+            common_duration d(t - Clock::now());
+            while (d > common_duration::zero())
+            {
+              d = (std::min)(d, common_duration(chrono::milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS)));
+              hidden::sleep_for_internal(detail::platform_duration(d));
+              d = t - Clock::now();
+            }
+          }
+#endif
+
+#else // BOOST_THREAD_SLEEP_FOR_IS_STEADY
+// When pthread_delay_np and nanosleep are not available,
+// fall back to using the interruptible sleep functions.
+
+#if defined BOOST_THREAD_USES_DATETIME
+#ifdef __DECXXX
+          /// Workaround of DECCXX issue of incorrect template substitution
+          template<>
+#endif
+          inline void sleep(system_time const& abs_time)
+          {
+            this_thread::sleep(abs_time);
+          }
+
+          template<typename TimeDuration>
+          void sleep(TimeDuration const& rel_time)
+          {
+            this_thread::sleep(rel_time);
+          }
+#endif
+
+#ifdef BOOST_THREAD_USES_CHRONO
+          template <class Clock, class Duration>
+          void sleep_until(const chrono::time_point<Clock, Duration>& t)
+          {
+            this_thread::sleep_until(t);
+          }
+
+          template <class Rep, class Period>
+          void sleep_for(const chrono::duration<Rep, Period>& d)
+          {
+            this_thread::sleep_for(d);
+          }
+#endif
+
+#endif // BOOST_THREAD_SLEEP_FOR_IS_STEADY
+        } // no_interruption_point
+    } // this_thread
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/pthread/thread_heap_alloc.hpp

@@ -0,0 +1,272 @@
+// 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 2008 Anthony Williams
+#ifndef THREAD_HEAP_ALLOC_PTHREAD_HPP
+#define THREAD_HEAP_ALLOC_PTHREAD_HPP
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+    namespace detail
+    {
+        template<typename T>
+        inline T* heap_new()
+        {
+            return new T();
+        }
+#if defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD) && ! defined (BOOST_NO_CXX11_RVALUE_REFERENCES)
+        template<typename T,typename... Args>
+        inline T* heap_new(Args&&... args)
+        {
+            return new T(static_cast<Args&&>(args)...);
+        }
+#elif ! defined BOOST_NO_CXX11_RVALUE_REFERENCES
+        template<typename T,typename A1>
+        inline T* heap_new(A1&& a1)
+        {
+            return new T(static_cast<A1&&>(a1));
+        }
+        template<typename T,typename A1,typename A2>
+        inline T* heap_new(A1&& a1,A2&& a2)
+        {
+            return new T(static_cast<A1&&>(a1),static_cast<A2&&>(a2));
+        }
+        template<typename T,typename A1,typename A2,typename A3>
+        inline T* heap_new(A1&& a1,A2&& a2,A3&& a3)
+        {
+            return new T(static_cast<A1&&>(a1),static_cast<A2&&>(a2),
+                         static_cast<A3&&>(a3));
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1&& a1,A2&& a2,A3&& a3,A4&& a4)
+        {
+            return new T(static_cast<A1&&>(a1),static_cast<A2&&>(a2),
+                         static_cast<A3&&>(a3),static_cast<A4&&>(a4));
+        }
+#else
+        template<typename T,typename A1>
+        inline T* heap_new_impl(A1 a1)
+        {
+            return new T(a1);
+        }
+        template<typename T,typename A1,typename A2>
+        inline T* heap_new_impl(A1 a1,A2 a2)
+        {
+            return new T(a1,a2);
+        }
+        template<typename T,typename A1,typename A2,typename A3>
+        inline T* heap_new_impl(A1 a1,A2 a2,A3 a3)
+        {
+            return new T(a1,a2,a3);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new_impl(A1 a1,A2 a2,A3 a3,A4 a4)
+        {
+            return new T(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4,typename A5>
+        inline T* heap_new_impl(A1 a1,A2 a2,A3 a3,A4 a4,A5 a5)
+        {
+            return new T(a1,a2,a3,a4,a5);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4,typename A5,typename A6>
+        inline T* heap_new_impl(A1 a1,A2 a2,A3 a3,A4 a4,A5 a5,A6 a6)
+        {
+            return new T(a1,a2,a3,a4,a5,a6);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4,typename A5,typename A6,typename A7>
+        inline T* heap_new_impl(A1 a1,A2 a2,A3 a3,A4 a4,A5 a5,A6 a6,A7 a7)
+        {
+            return new T(a1,a2,a3,a4,a5,a6,a7);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4,typename A5,typename A6,typename A7,typename A8>
+        inline T* heap_new_impl(A1 a1,A2 a2,A3 a3,A4 a4,A5 a5,A6 a6,A7 a7,A8 a8)
+        {
+            return new T(a1,a2,a3,a4,a5,a6,a7,a8);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4,typename A5,typename A6,typename A7,typename A8,typename A9>
+        inline T* heap_new_impl(A1 a1,A2 a2,A3 a3,A4 a4,A5 a5,A6 a6,A7 a7,A8 a8,A9 a9)
+        {
+            return new T(a1,a2,a3,a4,a5,a6,a7,a8,a9);
+        }
+
+        template<typename T,typename A1>
+        inline T* heap_new(A1 const& a1)
+        {
+            return heap_new_impl<T,A1 const&>(a1);
+        }
+        template<typename T,typename A1>
+        inline T* heap_new(A1& a1)
+        {
+            return heap_new_impl<T,A1&>(a1);
+        }
+
+        template<typename T,typename A1,typename A2>
+        inline T* heap_new(A1 const& a1,A2 const& a2)
+        {
+            return heap_new_impl<T,A1 const&,A2 const&>(a1,a2);
+        }
+        template<typename T,typename A1,typename A2>
+        inline T* heap_new(A1& a1,A2 const& a2)
+        {
+            return heap_new_impl<T,A1&,A2 const&>(a1,a2);
+        }
+        template<typename T,typename A1,typename A2>
+        inline T* heap_new(A1 const& a1,A2& a2)
+        {
+            return heap_new_impl<T,A1 const&,A2&>(a1,a2);
+        }
+        template<typename T,typename A1,typename A2>
+        inline T* heap_new(A1& a1,A2& a2)
+        {
+            return heap_new_impl<T,A1&,A2&>(a1,a2);
+        }
+
+        template<typename T,typename A1,typename A2,typename A3>
+        inline T* heap_new(A1 const& a1,A2 const& a2,A3 const& a3)
+        {
+            return heap_new_impl<T,A1 const&,A2 const&,A3 const&>(a1,a2,a3);
+        }
+        template<typename T,typename A1,typename A2,typename A3>
+        inline T* heap_new(A1& a1,A2 const& a2,A3 const& a3)
+        {
+            return heap_new_impl<T,A1&,A2 const&,A3 const&>(a1,a2,a3);
+        }
+        template<typename T,typename A1,typename A2,typename A3>
+        inline T* heap_new(A1 const& a1,A2& a2,A3 const& a3)
+        {
+            return heap_new_impl<T,A1 const&,A2&,A3 const&>(a1,a2,a3);
+        }
+        template<typename T,typename A1,typename A2,typename A3>
+        inline T* heap_new(A1& a1,A2& a2,A3 const& a3)
+        {
+            return heap_new_impl<T,A1&,A2&,A3 const&>(a1,a2,a3);
+        }
+
+        template<typename T,typename A1,typename A2,typename A3>
+        inline T* heap_new(A1 const& a1,A2 const& a2,A3& a3)
+        {
+            return heap_new_impl<T,A1 const&,A2 const&,A3&>(a1,a2,a3);
+        }
+        template<typename T,typename A1,typename A2,typename A3>
+        inline T* heap_new(A1& a1,A2 const& a2,A3& a3)
+        {
+            return heap_new_impl<T,A1&,A2 const&,A3&>(a1,a2,a3);
+        }
+        template<typename T,typename A1,typename A2,typename A3>
+        inline T* heap_new(A1 const& a1,A2& a2,A3& a3)
+        {
+            return heap_new_impl<T,A1 const&,A2&,A3&>(a1,a2,a3);
+        }
+        template<typename T,typename A1,typename A2,typename A3>
+        inline T* heap_new(A1& a1,A2& a2,A3& a3)
+        {
+            return heap_new_impl<T,A1&,A2&,A3&>(a1,a2,a3);
+        }
+
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1 const& a1,A2 const& a2,A3 const& a3,A4 const& a4)
+        {
+            return heap_new_impl<T,A1 const&,A2 const&,A3 const&,A4 const&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1& a1,A2 const& a2,A3 const& a3,A4 const& a4)
+        {
+            return heap_new_impl<T,A1&,A2 const&,A3 const&,A4 const&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1 const& a1,A2& a2,A3 const& a3,A4 const& a4)
+        {
+            return heap_new_impl<T,A1 const&,A2&,A3 const&,A4 const&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1& a1,A2& a2,A3 const& a3,A4 const& a4)
+        {
+            return heap_new_impl<T,A1&,A2&,A3 const&,A4 const&>(a1,a2,a3,a4);
+        }
+
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1 const& a1,A2 const& a2,A3& a3,A4 const& a4)
+        {
+            return heap_new_impl<T,A1 const&,A2 const&,A3&,A4 const&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1& a1,A2 const& a2,A3& a3,A4 const& a4)
+        {
+            return heap_new_impl<T,A1&,A2 const&,A3&,A4 const&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1 const& a1,A2& a2,A3& a3,A4 const& a4)
+        {
+            return heap_new_impl<T,A1 const&,A2&,A3&,A4 const&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1& a1,A2& a2,A3& a3,A4 const& a4)
+        {
+            return heap_new_impl<T,A1&,A2&,A3&,A4 const&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1 const& a1,A2 const& a2,A3 const& a3,A4& a4)
+        {
+            return heap_new_impl<T,A1 const&,A2 const&,A3 const&,A4&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1& a1,A2 const& a2,A3 const& a3,A4& a4)
+        {
+            return heap_new_impl<T,A1&,A2 const&,A3 const&,A4&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1 const& a1,A2& a2,A3 const& a3,A4& a4)
+        {
+            return heap_new_impl<T,A1 const&,A2&,A3 const&,A4&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1& a1,A2& a2,A3 const& a3,A4& a4)
+        {
+            return heap_new_impl<T,A1&,A2&,A3 const&,A4&>(a1,a2,a3,a4);
+        }
+
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1 const& a1,A2 const& a2,A3& a3,A4& a4)
+        {
+            return heap_new_impl<T,A1 const&,A2 const&,A3&,A4&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1& a1,A2 const& a2,A3& a3,A4& a4)
+        {
+            return heap_new_impl<T,A1&,A2 const&,A3&,A4&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1 const& a1,A2& a2,A3& a3,A4& a4)
+        {
+            return heap_new_impl<T,A1 const&,A2&,A3&,A4&>(a1,a2,a3,a4);
+        }
+        template<typename T,typename A1,typename A2,typename A3,typename A4>
+        inline T* heap_new(A1& a1,A2& a2,A3& a3,A4& a4)
+        {
+            return heap_new_impl<T,A1&,A2&,A3&,A4&>(a1,a2,a3,a4);
+        }
+
+#endif
+        template<typename T>
+        inline void heap_delete(T* data)
+        {
+            delete data;
+        }
+
+        template<typename T>
+        struct do_heap_delete
+        {
+            void operator()(T* data) const
+            {
+                detail::heap_delete(data);
+            }
+        };
+    }
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif