stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/basic_thread_pool.hpp

@@ -0,0 +1,318 @@
+// Copyright (C) 2013-2014 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)
+//
+// 2013/09 Vicente J. Botet Escriba
+//    Adapt to boost from CCIA C++11 implementation
+//    first implementation of a simple pool thread using a vector of threads and a sync_queue.
+
+#ifndef BOOST_THREAD_EXECUTORS_BASIC_THREAD_POOL_HPP
+#define BOOST_THREAD_EXECUTORS_BASIC_THREAD_POOL_HPP
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/detail/delete.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/thread.hpp>
+#include <boost/thread/concurrent_queues/sync_queue.hpp>
+#include <boost/thread/executors/work.hpp>
+#include <boost/thread/csbl/vector.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+namespace executors
+{
+  class basic_thread_pool
+  {
+  public:
+    /// type-erasure to store the works to do
+    typedef  executors::work work;
+  private:
+    typedef thread thread_t;
+    /// A move aware vector type
+    typedef csbl::vector<thread_t> thread_vector;
+
+    /// A move aware vector
+    thread_vector threads;
+    /// the thread safe work queue
+    concurrent::sync_queue<work > work_queue;
+
+  public:
+    /**
+     * Effects: try to execute one task.
+     * Returns: whether a task has been executed.
+     * Throws: whatever the current task constructor throws or the task() throws.
+     */
+    bool try_executing_one()
+    {
+      try
+      {
+        work task;
+        if (work_queue.try_pull(task) == queue_op_status::success)
+        {
+          task();
+          return true;
+        }
+        return false;
+      }
+      catch (...)
+      {
+        std::terminate();
+        //return false;
+      }
+    }
+    /**
+     * Effects: schedule one task or yields
+     * Throws: whatever the current task constructor throws or the task() throws.
+     */
+    void schedule_one_or_yield()
+    {
+        if ( ! try_executing_one())
+        {
+          this_thread::yield();
+        }
+    }
+  private:
+
+    /**
+     * The main loop of the worker threads
+     */
+    void worker_thread()
+    {
+      try
+      {
+        for(;;)
+        {
+          work task;
+          queue_op_status st = work_queue.wait_pull(task);
+          if (st == queue_op_status::closed) {
+            return;
+          }
+          task();
+        }
+      }
+      catch (...)
+      {
+        std::terminate();
+        return;
+      }
+    }
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <class AtThreadEntry>
+    void worker_thread1(AtThreadEntry& at_thread_entry)
+    {
+      at_thread_entry(*this);
+      worker_thread();
+    }
+#endif
+    void worker_thread2(void(*at_thread_entry)(basic_thread_pool&))
+    {
+      at_thread_entry(*this);
+      worker_thread();
+    }
+    template <class AtThreadEntry>
+    void worker_thread3(BOOST_THREAD_FWD_REF(AtThreadEntry) at_thread_entry)
+    {
+      at_thread_entry(*this);
+      worker_thread();
+    }
+    static void do_nothing_at_thread_entry(basic_thread_pool&) {}
+
+  public:
+    /// basic_thread_pool is not copyable.
+    BOOST_THREAD_NO_COPYABLE(basic_thread_pool)
+
+    /**
+     * \b Effects: creates a thread pool that runs closures on \c thread_count threads.
+     *
+     * \b Throws: Whatever exception is thrown while initializing the needed resources.
+     */
+    basic_thread_pool(unsigned const thread_count = thread::hardware_concurrency()+1)
+    {
+      try
+      {
+        threads.reserve(thread_count);
+        for (unsigned i = 0; i < thread_count; ++i)
+        {
+#if 1
+          thread th (&basic_thread_pool::worker_thread, this);
+          threads.push_back(thread_t(boost::move(th)));
+#else
+          threads.push_back(thread_t(&basic_thread_pool::worker_thread, this)); // do not compile
+#endif
+        }
+      }
+      catch (...)
+      {
+        close();
+        throw;
+      }
+    }
+    /**
+     * \b Effects: creates a thread pool that runs closures on \c thread_count threads
+     * and executes the at_thread_entry function at the entry of each created thread. .
+     *
+     * \b Throws: Whatever exception is thrown while initializing the needed resources.
+     */
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <class AtThreadEntry>
+    basic_thread_pool( unsigned const thread_count, AtThreadEntry& at_thread_entry)
+    {
+      try
+      {
+        threads.reserve(thread_count);
+        for (unsigned i = 0; i < thread_count; ++i)
+        {
+          thread th (&basic_thread_pool::worker_thread1<AtThreadEntry>, this, at_thread_entry);
+          threads.push_back(thread_t(boost::move(th)));
+          //threads.push_back(thread_t(&basic_thread_pool::worker_thread, this)); // do not compile
+        }
+      }
+      catch (...)
+      {
+        close();
+        throw;
+      }
+    }
+#endif
+    basic_thread_pool( unsigned const thread_count, void(*at_thread_entry)(basic_thread_pool&))
+    {
+      try
+      {
+        threads.reserve(thread_count);
+        for (unsigned i = 0; i < thread_count; ++i)
+        {
+          thread th (&basic_thread_pool::worker_thread2, this, at_thread_entry);
+          threads.push_back(thread_t(boost::move(th)));
+          //threads.push_back(thread_t(&basic_thread_pool::worker_thread, this)); // do not compile
+        }
+      }
+      catch (...)
+      {
+        close();
+        throw;
+      }
+    }
+    template <class AtThreadEntry>
+    basic_thread_pool( unsigned const thread_count, BOOST_THREAD_FWD_REF(AtThreadEntry) at_thread_entry)
+    {
+      try
+      {
+        threads.reserve(thread_count);
+        for (unsigned i = 0; i < thread_count; ++i)
+        {
+          thread th (&basic_thread_pool::worker_thread3<AtThreadEntry>, this, boost::forward<AtThreadEntry>(at_thread_entry));
+          threads.push_back(thread_t(boost::move(th)));
+          //threads.push_back(thread_t(&basic_thread_pool::worker_thread, this)); // do not compile
+        }
+      }
+      catch (...)
+      {
+        close();
+        throw;
+      }
+    }
+    /**
+     * \b Effects: Destroys the thread pool.
+     *
+     * \b Synchronization: The completion of all the closures happen before the completion of the \c basic_thread_pool destructor.
+     */
+    ~basic_thread_pool()
+    {
+      // signal to all the worker threads that there will be no more submissions.
+      close();
+      // joins all the threads before destroying the thread pool resources (e.g. the queue).
+      join();
+    }
+
+    /**
+     * \b Effects: join all the threads.
+     */
+    void join()
+    {
+      for (unsigned i = 0; i < threads.size(); ++i)
+      {
+        threads[i].join();
+      }
+    }
+
+    /**
+     * \b Effects: close the \c basic_thread_pool for submissions.
+     * The worker threads will work until there is no more closures to run.
+     */
+    void close()
+    {
+      work_queue.close();
+    }
+
+    /**
+     * \b Returns: whether the pool is closed for submissions.
+     */
+    bool closed()
+    {
+      return work_queue.closed();
+    }
+
+    /**
+     * \b Requires: \c Closure is a model of \c Callable(void()) and a model of \c CopyConstructible/MoveConstructible.
+     *
+     * \b Effects: The specified \c closure will be scheduled for execution at some point in the future.
+     * If invoked closure throws an exception the \c basic_thread_pool will call \c std::terminate, as is the case with threads.
+     *
+     * \b Synchronization: completion of \c closure on a particular thread happens before destruction of thread's thread local variables.
+     *
+     * \b Throws: \c sync_queue_is_closed if the thread pool is closed.
+     * Whatever exception that can be throw while storing the closure.
+     */
+    void submit(BOOST_THREAD_RV_REF(work) closure)  {
+      work_queue.push(boost::move(closure));
+    }
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <typename Closure>
+    void submit(Closure & closure)
+    {
+      submit(work(closure));
+    }
+#endif
+    void submit(void (*closure)())
+    {
+      submit(work(closure));
+    }
+
+    template <typename Closure>
+    void submit(BOOST_THREAD_FWD_REF(Closure) closure)
+    {
+      //submit(work(boost::forward<Closure>(closure)));
+      work w((boost::forward<Closure>(closure)));
+      submit(boost::move(w));
+    }
+
+    /**
+     * \b Requires: This must be called from an scheduled task.
+     *
+     * \b Effects: reschedule functions until pred()
+     */
+    template <typename Pred>
+    bool reschedule_until(Pred const& pred)
+    {
+      do {
+        if ( ! try_executing_one())
+        {
+          return false;
+        }
+      } while (! pred());
+      return true;
+    }
+
+  };
+}
+using executors::basic_thread_pool;
+
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/detail/priority_executor_base.hpp

@@ -0,0 +1,77 @@
+// Copyright (C) 2014 Ian Forbed
+// Copyright (C) 2014 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)
+//
+
+#ifndef BOOST_THREAD_EXECUTORS_DETAIL_PRIORITY_EXECUTOR_BASE_HPP
+#define BOOST_THREAD_EXECUTORS_DETAIL_PRIORITY_EXECUTOR_BASE_HPP
+
+#include <boost/atomic.hpp>
+#include <boost/function.hpp>
+#include <boost/thread/thread.hpp>
+#include <boost/thread/concurrent_queues/sync_timed_queue.hpp>
+#include <boost/thread/executors/work.hpp>
+
+namespace boost
+{
+namespace executors
+{
+namespace detail
+{
+  template <class Queue>
+  class priority_executor_base
+  {
+  public:
+    //typedef boost::function<void()> work;
+    typedef executors::work_pq work;
+  protected:
+    typedef Queue queue_type;
+    queue_type _workq;
+
+    priority_executor_base() {}
+  public:
+
+    ~priority_executor_base()
+    {
+      if(!closed())
+      {
+        this->close();
+      }
+    }
+
+    void close()
+    {
+      _workq.close();
+    }
+
+    bool closed()
+    {
+      return _workq.closed();
+    }
+
+    void loop()
+    {
+      try
+      {
+        for(;;)
+        {
+          work task;
+          queue_op_status st = _workq.wait_pull(task);
+          if (st == queue_op_status::closed) return;
+          task();
+        }
+      }
+      catch (...)
+      {
+        std::terminate();
+        return;
+      }
+    }
+  }; //end class
+
+} //end detail namespace
+} //end executors namespace
+} //end boost namespace
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/detail/scheduled_executor_base.hpp

@@ -0,0 +1,66 @@
+// Copyright (C) 2014 Ian Forbed
+// Copyright (C) 2014-2015 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)
+//
+
+#ifndef BOOST_THREAD_EXECUTORS_DETAIL_SCHEDULED_EXECUTOR_BASE_HPP
+#define BOOST_THREAD_EXECUTORS_DETAIL_SCHEDULED_EXECUTOR_BASE_HPP
+
+#include <boost/thread/concurrent_queues/sync_timed_queue.hpp>
+#include <boost/thread/executors/detail/priority_executor_base.hpp>
+#include <boost/thread/executors/work.hpp>
+#include <boost/thread/thread.hpp>
+
+#include <boost/atomic.hpp>
+#include <boost/function.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+namespace executors
+{
+namespace detail
+{
+  template <class Clock=chrono::steady_clock>
+  class scheduled_executor_base : public priority_executor_base<concurrent::sync_timed_queue<executors::work_pq, Clock  > >
+  {
+  public:
+    typedef executors::work_pq work;
+    typedef Clock clock;
+    typedef typename clock::duration duration;
+    typedef typename clock::time_point time_point;
+  protected:
+
+    scheduled_executor_base() {}
+  public:
+
+    ~scheduled_executor_base()
+    {
+      if(! this->closed())
+      {
+        this->close();
+      }
+    }
+
+    void submit_at(work w, const time_point& tp)
+    {
+      this->_workq.push(boost::move(w), tp);
+    }
+
+    void submit_after(work w, const duration& dura)
+    {
+      this->_workq.push(boost::move(w), dura+clock::now());
+    }
+
+  }; //end class
+
+} //end detail namespace
+} //end executors namespace
+} //end boost namespace
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/executor.hpp

@@ -0,0 +1,148 @@
+// Copyright (C) 2013,2014 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)
+//
+// 2013/09 Vicente J. Botet Escriba
+//    Adapt to boost from CCIA C++11 implementation
+
+#ifndef BOOST_THREAD_EXECUTORS_EXECUTOR_HPP
+#define BOOST_THREAD_EXECUTORS_EXECUTOR_HPP
+
+#include <boost/thread/detail/config.hpp>
+
+#include <boost/thread/detail/delete.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/executors/work.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+  namespace executors
+  {
+  class executor
+  {
+  public:
+    /// type-erasure to store the works to do
+    typedef  executors::work work;
+
+    /// executor is not copyable.
+    BOOST_THREAD_NO_COPYABLE(executor)
+    executor() {}
+
+    /**
+     * \par Effects
+     * Destroys the executor.
+     *
+     * \par Synchronization
+     * The completion of all the closures happen before the completion of the executor destructor.
+     */
+    virtual ~executor() {}
+
+    /**
+     * \par Effects
+     * Close the \c executor for submissions.
+     * The worker threads will work until there is no more closures to run.
+     */
+    virtual void close() = 0;
+
+    /**
+     * \par Returns
+     * Whether the pool is closed for submissions.
+     */
+    virtual bool closed() = 0;
+
+    /**
+     * \par Effects
+     * The specified closure will be scheduled for execution at some point in the future.
+     * If invoked closure throws an exception the executor will call std::terminate, as is the case with threads.
+     *
+     * \par Synchronization
+     * Ccompletion of closure on a particular thread happens before destruction of thread's thread local variables.
+     *
+     * \par Throws
+     * \c sync_queue_is_closed if the thread pool is closed.
+     * Whatever exception that can be throw while storing the closure.
+     */
+    virtual void submit(BOOST_THREAD_RV_REF(work) closure) = 0;
+//    virtual void submit(work& closure) = 0;
+
+    /**
+     * \par Requires
+     * \c Closure is a model of Callable(void()) and a model of CopyConstructible/MoveConstructible.
+     *
+     * \par Effects
+     * The specified closure will be scheduled for execution at some point in the future.
+     * If invoked closure throws an exception the thread pool will call std::terminate, as is the case with threads.
+     *
+     * \par Synchronization
+     * Completion of closure on a particular thread happens before destruction of thread's thread local variables.
+     *
+     * \par Throws
+     * \c sync_queue_is_closed if the thread pool is closed.
+     * Whatever exception that can be throw while storing the closure.
+     */
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <typename Closure>
+    void submit(Closure & closure)
+    {
+      work w ((closure));
+      submit(boost::move(w));
+    }
+#endif
+    void submit(void (*closure)())
+    {
+      work w ((closure));
+      submit(boost::move(w));
+    }
+
+    template <typename Closure>
+    void submit(BOOST_THREAD_FWD_REF(Closure) closure)
+    {
+      //submit(work(boost::forward<Closure>(closure)));
+      work w((boost::forward<Closure>(closure)));
+      submit(boost::move(w));
+    }
+
+    /**
+     * \par Effects
+     * Try to execute one task.
+     *
+     * \par Returns
+     * Whether a task has been executed.
+     *
+     * \par Throws
+     * Whatever the current task constructor throws or the task() throws.
+     */
+    virtual bool try_executing_one() = 0;
+
+    /**
+     * \par Requires
+     * This must be called from an scheduled task.
+     *
+     * \par Effects
+     * Reschedule functions until pred()
+     */
+    template <typename Pred>
+    bool reschedule_until(Pred const& pred)
+    {
+      do {
+        //schedule_one_or_yield();
+        if ( ! try_executing_one())
+        {
+          return false;
+        }
+      } while (! pred());
+      return true;
+    }
+  };
+
+  }
+  using executors::executor;
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/executor_adaptor.hpp

@@ -0,0 +1,136 @@
+// Copyright (C) 2013,2014 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)
+//
+// 2013/09 Vicente J. Botet Escriba
+//    Adapt to boost from CCIA C++11 implementation
+
+#ifndef BOOST_THREAD_EXECUTORS_EXECUTOR_ADAPTOR_HPP
+#define BOOST_THREAD_EXECUTORS_EXECUTOR_ADAPTOR_HPP
+
+#include <boost/thread/detail/config.hpp>
+
+#include <boost/thread/executors/executor.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+namespace executors
+{
+  /**
+   * Polymorphic adaptor of a model of Executor to an executor.
+   */
+  template <typename Executor>
+  class executor_adaptor : public executor
+  {
+    Executor ex;
+  public:
+    /// type-erasure to store the works to do
+    typedef  executor::work work;
+
+    /// executor is not copyable.
+    BOOST_THREAD_NO_COPYABLE(executor_adaptor)
+
+    /**
+     * executor_adaptor constructor
+     */
+#if ! defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+    template <typename ...Args>
+    executor_adaptor(BOOST_THREAD_RV_REF(Args) ... args) : ex(boost::forward<Args>(args)...) {}
+#else
+    /**
+     * executor_adaptor constructor
+     */
+    executor_adaptor() : ex() {}
+
+    template <typename A1>
+    executor_adaptor(
+        BOOST_THREAD_FWD_REF(A1) a1
+        ) :
+      ex(
+          boost::forward<A1>(a1)
+          ) {}
+    template <typename A1, typename A2>
+    executor_adaptor(
+        BOOST_THREAD_FWD_REF(A1) a1,
+        BOOST_THREAD_FWD_REF(A2) a2
+        ) :
+      ex(
+          boost::forward<A1>(a1),
+          boost::forward<A2>(a2)
+          ) {}
+    template <typename A1, typename A2, typename A3>
+    executor_adaptor(
+        BOOST_THREAD_FWD_REF(A1) a1,
+        BOOST_THREAD_FWD_REF(A2) a2,
+        BOOST_THREAD_FWD_REF(A3) a3
+        ) :
+      ex(
+          boost::forward<A1>(a1),
+          boost::forward<A2>(a2),
+          boost::forward<A3>(a3)
+          ) {}
+#endif
+    Executor& underlying_executor() { return ex; }
+
+    /**
+     * \b Effects: close the \c executor for submissions.
+     * The worker threads will work until there is no more closures to run.
+     */
+    void close() { ex.close(); }
+
+    /**
+     * \b Returns: whether the pool is closed for submissions.
+     */
+    bool closed() { return ex.closed(); }
+
+    /**
+     * \b Effects: The specified closure will be scheduled for execution at some point in the future.
+     * If invoked closure throws an exception the executor will call std::terminate, as is the case with threads.
+     *
+     * \b Synchronization: completion of closure on a particular thread happens before destruction of thread's thread local variables.
+     *
+     * \b Throws: \c sync_queue_is_closed if the thread pool is closed.
+     * Whatever exception that can be throw while storing the closure.
+     */
+    void submit(BOOST_THREAD_RV_REF(work) closure)  {
+      return ex.submit(boost::move(closure));
+    }
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <typename Closure>
+    void submit(Closure & closure)
+    {
+      submit(work(closure));
+    }
+#endif
+    void submit(void (*closure)())
+    {
+      submit(work(closure));
+    }
+
+    template <typename Closure>
+    void submit(BOOST_THREAD_FWD_REF(Closure) closure)
+    {
+      //submit(work(boost::forward<Closure>(closure)));
+      work w((boost::forward<Closure>(closure)));
+      submit(boost::move(w));
+    }
+
+    /**
+     * Effects: try to execute one task.
+     * Returns: whether a task has been executed.
+     * Throws: whatever the current task constructor throws or the task() throws.
+     */
+    bool try_executing_one() { return ex.try_executing_one(); }
+
+  };
+}
+using executors::executor_adaptor;
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/generic_executor_ref.hpp

@@ -0,0 +1,213 @@
+// Copyright (C) 2014 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)
+//
+
+#ifndef BOOST_THREAD_EXECUTORS_GENERIC_EXECUTOR_REF_HPP
+#define BOOST_THREAD_EXECUTORS_GENERIC_EXECUTOR_REF_HPP
+
+#include <boost/thread/detail/config.hpp>
+
+#include <boost/thread/detail/delete.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/executors/executor.hpp>
+
+#include <boost/shared_ptr.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+  namespace executors
+  {
+
+  template <class Executor>
+  class executor_ref : public executor
+  {
+    Executor& ex;
+  public:
+    /// type-erasure to store the works to do
+    typedef  executors::work work;
+
+    /// executor is not copyable.
+    BOOST_THREAD_NO_COPYABLE(executor_ref)
+    executor_ref(Executor& ex_) : ex(ex_) {}
+
+    /**
+     * \par Effects
+     * Destroys the executor.
+     *
+     * \par Synchronization
+     * The completion of all the closures happen before the completion of the executor destructor.
+     */
+    ~executor_ref() {}
+
+    /**
+     * \par Effects
+     * Close the \c executor for submissions.
+     * The worker threads will work until there is no more closures to run.
+     */
+    void close() { ex.close(); }
+
+    /**
+     * \par Returns
+     * Whether the pool is closed for submissions.
+     */
+    bool closed() { return ex.closed(); }
+
+    /**
+     * \par Effects
+     * The specified closure will be scheduled for execution at some point in the future.
+     * If invoked closure throws an exception the executor will call std::terminate, as is the case with threads.
+     *
+     * \par Synchronization
+     * Ccompletion of closure on a particular thread happens before destruction of thread's thread local variables.
+     *
+     * \par Throws
+     * \c sync_queue_is_closed if the thread pool is closed.
+     * Whatever exception that can be throw while storing the closure.
+     */
+    void submit(BOOST_THREAD_RV_REF(work) closure) {
+      ex.submit(boost::move(closure));
+    }
+//    void submit(work& closure) {
+//      ex.submit(closure);
+//    }
+
+
+    /**
+     * \par Effects
+     * Try to execute one task.
+     *
+     * \par Returns
+     * Whether a task has been executed.
+     *
+     * \par Throws
+     * Whatever the current task constructor throws or the task() throws.
+     */
+    bool try_executing_one() { return ex.try_executing_one(); }
+
+  };
+
+  class generic_executor_ref
+  {
+    shared_ptr<executor> ex;
+  public:
+    /// type-erasure to store the works to do
+    typedef executors::work work;
+
+    template<typename Executor>
+    generic_executor_ref(Executor& ex_)
+    //: ex(make_shared<executor_ref<Executor> >(ex_)) // todo check why this doesn't works with C++03
+    : ex( new executor_ref<Executor>(ex_) )
+    {
+    }
+
+    //generic_executor_ref(generic_executor_ref const& other) noexcept    {}
+    //generic_executor_ref& operator=(generic_executor_ref const& other) noexcept    {}
+
+
+    /**
+     * \par Effects
+     * Close the \c executor for submissions.
+     * The worker threads will work until there is no more closures to run.
+     */
+    void close() { ex->close(); }
+
+    /**
+     * \par Returns
+     * Whether the pool is closed for submissions.
+     */
+    bool closed() { return ex->closed(); }
+
+    /**
+     * \par Requires
+     * \c Closure is a model of Callable(void()) and a model of CopyConstructible/MoveConstructible.
+     *
+     * \par Effects
+     * The specified closure will be scheduled for execution at some point in the future.
+     * If invoked closure throws an exception the thread pool will call std::terminate, as is the case with threads.
+     *
+     * \par Synchronization
+     * Completion of closure on a particular thread happens before destruction of thread's thread local variables.
+     *
+     * \par Throws
+     * \c sync_queue_is_closed if the thread pool is closed.
+     * Whatever exception that can be throw while storing the closure.
+     */
+
+    void submit(BOOST_THREAD_RV_REF(work) closure)
+    {
+      ex->submit(boost::move(closure));
+    }
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <typename Closure>
+    void submit(Closure & closure)
+    {
+      //work w ((closure));
+      //submit(boost::move(w));
+      submit(work(closure));
+    }
+#endif
+    void submit(void (*closure)())
+    {
+      work w ((closure));
+      submit(boost::move(w));
+      //submit(work(closure));
+    }
+
+    template <typename Closure>
+    void submit(BOOST_THREAD_FWD_REF(Closure) closure)
+    {
+      work w((boost::forward<Closure>(closure)));
+      submit(boost::move(w));
+    }
+
+//    size_t num_pending_closures() const
+//    {
+//      return ex->num_pending_closures();
+//    }
+
+    /**
+     * \par Effects
+     * Try to execute one task.
+     *
+     * \par Returns
+     * Whether a task has been executed.
+     *
+     * \par Throws
+     * Whatever the current task constructor throws or the task() throws.
+     */
+    bool try_executing_one() { return ex->try_executing_one(); }
+
+    /**
+     * \par Requires
+     * This must be called from an scheduled task.
+     *
+     * \par Effects
+     * reschedule functions until pred()
+     */
+    template <typename Pred>
+    bool reschedule_until(Pred const& pred)
+    {
+      do {
+        //schedule_one_or_yield();
+        if ( ! try_executing_one())
+        {
+          return false;
+        }
+      } while (! pred());
+      return true;
+    }
+
+  };
+  }
+  using executors::executor_ref;
+  using executors::generic_executor_ref;
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/inline_executor.hpp

@@ -0,0 +1,171 @@
+// Copyright (C) 2014 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)
+//
+// 2013/11 Vicente J. Botet Escriba
+//    first implementation of a simple serial scheduler.
+
+#ifndef BOOST_THREAD_INLINE_EXECUTOR_HPP
+#define BOOST_THREAD_INLINE_EXECUTOR_HPP
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/detail/delete.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/executors/work.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+namespace executors
+{
+  class inline_executor
+  {
+  public:
+    /// type-erasure to store the works to do
+    typedef  executors::work work;
+    bool closed_;
+    mutable mutex mtx_;
+    /**
+     * Effects: try to execute one task.
+     * Returns: whether a task has been executed.
+     * Throws: whatever the current task constructor throws or the task() throws.
+     */
+    bool try_executing_one()
+    {
+      return false;
+    }
+
+  public:
+    /// inline_executor is not copyable.
+    BOOST_THREAD_NO_COPYABLE(inline_executor)
+
+    /**
+     * \b Effects: creates a inline executor that runs closures immediately.
+     *
+     * \b Throws: Nothing.
+     */
+    inline_executor()
+    : closed_(false)
+    {
+    }
+    /**
+     * \b Effects: Destroys the inline executor.
+     *
+     * \b Synchronization: The completion of all the closures happen before the completion of the \c inline_executor destructor.
+     */
+    ~inline_executor()
+    {
+      // signal to all the worker thread that there will be no more submissions.
+      close();
+    }
+
+    /**
+     * \b Effects: close the \c inline_executor for submissions.
+     * The loop will work until there is no more closures to run.
+     */
+    void close()
+    {
+      lock_guard<mutex> lk(mtx_);
+      closed_ = true;
+    }
+
+    /**
+     * \b Returns: whether the pool is closed for submissions.
+     */
+    bool closed(lock_guard<mutex>& )
+    {
+      return closed_;
+    }
+    bool closed()
+    {
+      lock_guard<mutex> lk(mtx_);
+      return closed(lk);
+    }
+
+    /**
+     * \b Requires: \c Closure is a model of \c Callable(void()) and a model of \c CopyConstructible/MoveConstructible.
+     *
+     * \b Effects: The specified \c closure will be scheduled for execution at some point in the future.
+     * If invoked closure throws an exception the \c inline_executor will call \c std::terminate, as is the case with threads.
+     *
+     * \b Synchronization: completion of \c closure on a particular thread happens before destruction of thread's thread local variables.
+     *
+     * \b Throws: \c sync_queue_is_closed if the thread pool is closed.
+     * Whatever exception that can be throw while storing the closure.
+     */
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <typename Closure>
+    void submit(Closure & closure)
+    {
+      {
+        lock_guard<mutex> lk(mtx_);
+        if (closed(lk))  BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+      }
+      try
+      {
+        closure();
+      }
+      catch (...)
+      {
+        std::terminate();
+        return;
+      }
+    }
+#endif
+    void submit(void (*closure)())
+    {
+      {
+        lock_guard<mutex> lk(mtx_);
+        if (closed(lk))  BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+      }
+      try
+      {
+        closure();
+      }
+      catch (...)
+      {
+        std::terminate();
+        return;
+      }
+    }
+
+    template <typename Closure>
+    void submit(BOOST_THREAD_FWD_REF(Closure) closure)
+    {
+      {
+        lock_guard<mutex> lk(mtx_);
+        if (closed(lk))  BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+      }
+      try
+      {
+        closure();
+      }
+      catch (...)
+      {
+        std::terminate();
+        return;
+      }
+    }
+
+    /**
+     * \b Requires: This must be called from an scheduled task.
+     *
+     * \b Effects: reschedule functions until pred()
+     */
+    template <typename Pred>
+    bool reschedule_until(Pred const& )
+    {
+      return false;
+    }
+
+  };
+}
+using executors::inline_executor;
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/loop_executor.hpp

@@ -0,0 +1,209 @@
+// Copyright (C) 2013,2014 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)
+//
+// 2013/11 Vicente J. Botet Escriba
+//    first implementation of a simple user scheduler.
+// 2013/11 Vicente J. Botet Escriba
+//    rename loop_executor.
+
+#ifndef BOOST_THREAD_EXECUTORS_LOOP_EXECUTOR_HPP
+#define BOOST_THREAD_EXECUTORS_LOOP_EXECUTOR_HPP
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/detail/delete.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/concurrent_queues/sync_queue.hpp>
+#include <boost/thread/executors/work.hpp>
+#include <boost/assert.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+namespace executors
+{
+
+  class loop_executor
+  {
+  public:
+    /// type-erasure to store the works to do
+    typedef  executors::work work;
+  private:
+    /// the thread safe work queue
+    concurrent::sync_queue<work > work_queue;
+
+  public:
+    /**
+     * Effects: try to execute one task.
+     * Returns: whether a task has been executed.
+     * Throws: whatever the current task constructor throws or the task() throws.
+     */
+    bool try_executing_one()
+    {
+      return execute_one(/*wait:*/false);
+    }
+
+  private:
+    /**
+     * Effects: Execute one task.
+     * Remark: If wait is true, waits until a task is available or the executor
+     *         is closed. If wait is false, returns false immediately if no
+     *         task is available.
+     * Returns: whether a task has been executed (if wait is true, only returns false if closed).
+     * Throws: whatever the current task constructor throws or the task() throws.
+     */
+    bool execute_one(bool wait)
+    {
+      work task;
+      try
+      {
+        queue_op_status status = wait ?
+          work_queue.wait_pull(task) :
+          work_queue.try_pull(task);
+        if (status == queue_op_status::success)
+        {
+          task();
+          return true;
+        }
+        BOOST_ASSERT(!wait || status == queue_op_status::closed);
+        return false;
+      }
+      catch (...)
+      {
+        std::terminate();
+        //return false;
+      }
+    }
+
+  public:
+    /// loop_executor is not copyable.
+    BOOST_THREAD_NO_COPYABLE(loop_executor)
+
+    /**
+     * \b Effects: creates a thread pool that runs closures using one of its closure-executing methods.
+     *
+     * \b Throws: Whatever exception is thrown while initializing the needed resources.
+     */
+    loop_executor()
+    {
+    }
+    /**
+     * \b Effects: Destroys the thread pool.
+     *
+     * \b Synchronization: The completion of all the closures happen before the completion of the \c loop_executor destructor.
+     */
+    ~loop_executor()
+    {
+      // signal to all the worker thread that there will be no more submissions.
+      close();
+    }
+
+    /**
+     * The main loop of the worker thread
+     */
+    void loop()
+    {
+      while (execute_one(/*wait:*/true))
+      {
+      }
+      BOOST_ASSERT(closed());
+      while (try_executing_one())
+      {
+      }
+    }
+
+    /**
+     * \b Effects: close the \c loop_executor for submissions.
+     * The loop will work until there is no more closures to run.
+     */
+    void close()
+    {
+      work_queue.close();
+    }
+
+    /**
+     * \b Returns: whether the pool is closed for submissions.
+     */
+    bool closed()
+    {
+      return work_queue.closed();
+    }
+
+    /**
+     * \b Requires: \c Closure is a model of \c Callable(void()) and a model of \c CopyConstructible/MoveConstructible.
+     *
+     * \b Effects: The specified \c closure will be scheduled for execution at some point in the future.
+     * If invoked closure throws an exception the \c loop_executor will call \c std::terminate, as is the case with threads.
+     *
+     * \b Synchronization: completion of \c closure on a particular thread happens before destruction of thread's thread local variables.
+     *
+     * \b Throws: \c sync_queue_is_closed if the thread pool is closed.
+     * Whatever exception that can be throw while storing the closure.
+     */
+    void submit(BOOST_THREAD_RV_REF(work) closure)  {
+      work_queue.push(boost::move(closure));
+    }
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <typename Closure>
+    void submit(Closure & closure)
+    {
+      submit(work(closure));
+   }
+#endif
+
+    void submit(void (*closure)())
+    {
+      submit(work(closure));
+    }
+
+    template <typename Closure>
+    void submit(BOOST_THREAD_FWD_REF(Closure) closure)
+    {
+      //work_queue.push(work(boost::forward<Closure>(closure)));
+      work w((boost::forward<Closure>(closure)));
+      submit(boost::move(w));
+    }
+
+    /**
+     * \b Requires: This must be called from an scheduled task.
+     *
+     * \b Effects: reschedule functions until pred()
+     */
+    template <typename Pred>
+    bool reschedule_until(Pred const& pred)
+    {
+      do {
+        if ( ! try_executing_one())
+        {
+          return false;
+        }
+      } while (! pred());
+      return true;
+    }
+
+    /**
+     * run queued closures
+     */
+    void run_queued_closures()
+    {
+      sync_queue<work>::underlying_queue_type q = work_queue.underlying_queue();
+      while (! q.empty())
+      {
+        work& task = q.front();
+        task();
+        q.pop_front();
+      }
+    }
+
+  };
+}
+using executors::loop_executor;
+
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/scheduled_thread_pool.hpp

@@ -0,0 +1,48 @@
+// Copyright (C) 2014 Ian Forbed
+// Copyright (C) 2014 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)
+//
+
+#ifndef BOOST_THREAD_EXECUTORS_SCHEDULED_THREAD_POOL_HPP
+#define BOOST_THREAD_EXECUTORS_SCHEDULED_THREAD_POOL_HPP
+
+#include <boost/thread/executors/detail/scheduled_executor_base.hpp>
+
+namespace boost
+{
+namespace executors
+{
+
+  class scheduled_thread_pool : public detail::scheduled_executor_base<>
+  {
+  private:
+    thread_group _workers;
+  public:
+
+    scheduled_thread_pool(size_t num_threads) : super()
+    {
+      for(size_t i = 0; i < num_threads; i++)
+      {
+        _workers.create_thread(bind(&super::loop, this));
+      }
+    }
+
+    ~scheduled_thread_pool()
+    {
+      this->close();
+      _workers.join_all();
+    }
+
+  private:
+    typedef detail::scheduled_executor_base<> super;
+  }; //end class
+
+} //end executors namespace
+
+using executors::scheduled_thread_pool;
+
+} //end boost
+#endif
+

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/scheduler.hpp

@@ -0,0 +1,271 @@
+// Copyright (C) 2014 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)
+//
+
+#ifndef BOOST_THREAD_EXECUTORS_SCHEDULER_HPP
+#define BOOST_THREAD_EXECUTORS_SCHEDULER_HPP
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/executors/detail/scheduled_executor_base.hpp>
+
+#include <boost/chrono/time_point.hpp>
+#include <boost/chrono/duration.hpp>
+#include <boost/chrono/system_clocks.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+  namespace executors
+  {
+    /// Wraps the reference to an executor and a function to make a work that submit the function using the executor.
+    template <class Executor, class Function>
+    class resubmitter
+    {
+    public:
+      resubmitter(Executor& ex, Function funct) :
+        ex(ex),
+        funct(boost::move(funct))
+      {}
+
+      void operator()()
+      {
+        ex.submit(funct);
+      }
+
+    private:
+      Executor&   ex;
+      Function funct;
+    };
+
+    /// resubmitter factory
+    template <class Executor, class Function>
+    resubmitter<Executor, typename decay<Function>::type>
+    resubmit(Executor& ex, BOOST_THREAD_FWD_REF(Function) funct) {
+      return resubmitter<Executor, typename decay<Function>::type >(ex, boost::move(funct));
+    }
+
+    /// Wraps references to a @c Scheduler and an @c Executor providing an @c Executor that
+    /// resubmit the function using the referenced Executor at a given @c time_point known at construction.
+    template <class Scheduler, class Executor>
+    class resubmit_at_executor
+    {
+    public:
+      typedef typename Scheduler::clock clock;
+      typedef typename Scheduler::work work;
+
+      template <class Duration>
+      resubmit_at_executor(Scheduler& sch, Executor& ex, chrono::time_point<clock, Duration> const& tp) :
+        sch(sch),
+        ex(ex),
+        tp(tp),
+        is_closed(false)
+      {
+      }
+
+      ~resubmit_at_executor()
+      {
+        close();
+      }
+
+      template <class Work>
+      void submit(BOOST_THREAD_FWD_REF(Work) w)
+      {
+        if (closed())
+        {
+          BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+        }
+        sch.submit_at(resubmit(ex,boost::forward<Work>(w)), tp);
+      }
+
+      Executor& underlying_executor()
+      {
+          return ex;
+      }
+      Scheduler& underlying_scheduler()
+      {
+          return sch;
+      }
+
+      void close()
+      {
+        is_closed = true;
+      }
+
+      bool closed()
+      {
+        return is_closed || sch.closed() || ex.closed();
+      }
+
+    private:
+      Scheduler&  sch;
+      Executor&   ex;
+      typename clock::time_point  tp;
+      bool  is_closed;
+    };
+
+
+    /// Expression template helper storing a pair of references to an @c Scheduler and an @c Executor
+    /// It provides factory helper functions such as at/after that convert these a pair of @c Scheduler @c Executor
+    /// into an new @c Executor that submit the work using the referenced @c Executor at/after a specific time/duration
+    /// respectively, using the referenced @Scheduler.
+    template <class Scheduler, class Executor>
+    class scheduler_executor_wrapper
+    {
+    public:
+      typedef typename Scheduler::clock clock;
+      typedef typename Scheduler::work work;
+      typedef resubmit_at_executor<Scheduler, Executor> the_executor;
+
+      scheduler_executor_wrapper(Scheduler& sch, Executor& ex) :
+          sch(sch),
+          ex(ex)
+      {}
+
+      ~scheduler_executor_wrapper()
+      {
+      }
+
+      Executor& underlying_executor()
+      {
+          return ex;
+      }
+      Scheduler& underlying_scheduler()
+      {
+          return sch;
+      }
+
+      template <class Rep, class Period>
+      the_executor after(chrono::duration<Rep,Period> const& rel_time)
+      {
+        return at(clock::now() + rel_time );
+      }
+
+      template <class Duration>
+      the_executor at(chrono::time_point<clock,Duration> const& abs_time)
+      {
+        return the_executor(sch, ex, abs_time);
+      }
+
+    private:
+      Scheduler& sch;
+      Executor& ex;
+    }; //end class
+
+    /// Wraps a reference to a @c Scheduler providing an @c Executor that
+    /// run the function at a given @c time_point known at construction.
+    template <class Scheduler>
+    class at_executor
+    {
+    public:
+      typedef typename Scheduler::clock clock;
+      typedef typename Scheduler::work work;
+      typedef typename clock::time_point time_point;
+
+      template <class Duration>
+      at_executor(Scheduler& sch, chrono::time_point<clock,Duration> const& tp) :
+          sch(sch),
+          tp(tp),
+          is_closed(false)
+      {}
+
+      ~at_executor()
+      {
+        close();
+      }
+
+      Scheduler& underlying_scheduler()
+      {
+          return sch;
+      }
+
+      void close()
+      {
+        is_closed = true;
+      }
+
+      bool closed()
+      {
+        return is_closed || sch.closed();
+      }
+
+      template <class Work>
+      void submit(BOOST_THREAD_FWD_REF(Work) w)
+      {
+        if (closed())
+        {
+          BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+        }
+        sch.submit_at(boost::forward<Work>(w), tp);
+      }
+
+      template <class Executor>
+      resubmit_at_executor<Scheduler, Executor> on(Executor& ex)
+      {
+        return resubmit_at_executor<Scheduler, Executor>(sch, ex, tp);
+      }
+
+    private:
+      Scheduler& sch;
+      time_point  tp;
+      bool  is_closed;
+    }; //end class
+
+    /// A @c Scheduler using a specific thread. Note that a Scheduler is not an Executor.
+    /// It provides factory helper functions such as at/after that convert a @c Scheduler into an @c Executor
+    /// that submit the work at/after a specific time/duration respectively.
+    template <class Clock = chrono::steady_clock>
+    class scheduler : public detail::scheduled_executor_base<Clock>
+    {
+    public:
+      typedef typename detail::scheduled_executor_base<Clock>::work work;
+
+      typedef Clock clock;
+
+      scheduler()
+        : super(),
+          thr(&super::loop, this) {}
+
+      ~scheduler()
+      {
+        this->close();
+        thr.join();
+      }
+      template <class Ex>
+      scheduler_executor_wrapper<scheduler, Ex> on(Ex& ex)
+      {
+        return scheduler_executor_wrapper<scheduler, Ex>(*this, ex);
+      }
+
+      template <class Rep, class Period>
+      at_executor<scheduler> after(chrono::duration<Rep,Period> const& rel_time)
+      {
+        return at(rel_time + clock::now());
+      }
+
+      template <class Duration>
+      at_executor<scheduler> at(chrono::time_point<clock,Duration> const& tp)
+      {
+        return at_executor<scheduler>(*this, tp);
+      }
+
+    private:
+      typedef detail::scheduled_executor_base<Clock> super;
+      thread thr;
+    };
+
+
+  }
+  using executors::resubmitter;
+  using executors::resubmit;
+  using executors::resubmit_at_executor;
+  using executors::scheduler_executor_wrapper;
+  using executors::at_executor;
+  using executors::scheduler;
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/scheduling_adaptor.hpp

@@ -0,0 +1,51 @@
+// Copyright (C) 2014 Ian Forbed
+// Copyright (C) 2014 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)
+//
+
+#ifndef BOOST_THREAD_EXECUTORS_SCHEDULING_ADAPTOR_HPP
+#define BOOST_THREAD_EXECUTORS_SCHEDULING_ADAPTOR_HPP
+
+#include <boost/thread/executors/detail/scheduled_executor_base.hpp>
+
+namespace boost
+{
+namespace executors
+{
+
+  template <typename Executor>
+  class scheduling_adpator : public detail::scheduled_executor_base<>
+  {
+  private:
+    Executor& _exec;
+    thread _scheduler;
+  public:
+
+    scheduling_adpator(Executor& ex)
+      : super(),
+        _exec(ex),
+        _scheduler(&super::loop, this) {}
+
+    ~scheduling_adpator()
+    {
+      this->close();
+      _scheduler.join();
+    }
+
+    Executor& underlying_executor()
+    {
+        return _exec;
+    }
+
+  private:
+    typedef detail::scheduled_executor_base<> super;
+  }; //end class
+
+} //end executors
+
+  using executors::scheduling_adpator;
+
+} //end boost
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/serial_executor.hpp

@@ -0,0 +1,216 @@
+// Copyright (C) 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)
+//
+// 2013/11 Vicente J. Botet Escriba
+//    first implementation of a simple serial scheduler.
+
+#ifndef BOOST_THREAD_SERIAL_EXECUTOR_HPP
+#define BOOST_THREAD_SERIAL_EXECUTOR_HPP
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/detail/delete.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/concurrent_queues/sync_queue.hpp>
+#include <boost/thread/executors/work.hpp>
+#include <boost/thread/executors/generic_executor_ref.hpp>
+#include <boost/thread/future.hpp>
+#include <boost/thread/scoped_thread.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+namespace executors
+{
+  class serial_executor
+  {
+  public:
+    /// type-erasure to store the works to do
+    typedef  executors::work work;
+  private:
+    typedef  scoped_thread<> thread_t;
+
+    /// the thread safe work queue
+    concurrent::sync_queue<work > work_queue;
+    generic_executor_ref ex;
+    thread_t thr;
+
+    struct try_executing_one_task {
+      work& task;
+      boost::promise<void> &p;
+      try_executing_one_task(work& task, boost::promise<void> &p)
+      : task(task), p(p) {}
+      void operator()() {
+        try {
+          task();
+          p.set_value();
+        } catch (...)
+        {
+          p.set_exception(current_exception());
+        }
+      }
+    };
+  public:
+    /**
+     * \par Returns
+     * The underlying executor wrapped on a generic executor reference.
+     */
+    generic_executor_ref& underlying_executor() BOOST_NOEXCEPT { return ex; }
+
+    /**
+     * Effects: try to execute one task.
+     * Returns: whether a task has been executed.
+     * Throws: whatever the current task constructor throws or the task() throws.
+     */
+    bool try_executing_one()
+    {
+      work task;
+      try
+      {
+        if (work_queue.try_pull(task) == queue_op_status::success)
+        {
+          boost::promise<void> p;
+          try_executing_one_task tmp(task,p);
+          ex.submit(tmp);
+          p.get_future().wait();
+          return true;
+        }
+        return false;
+      }
+      catch (...)
+      {
+        std::terminate();
+        //return false;
+      }
+    }
+  private:
+    /**
+     * Effects: schedule one task or yields
+     * Throws: whatever the current task constructor throws or the task() throws.
+     */
+    void schedule_one_or_yield()
+    {
+        if ( ! try_executing_one())
+        {
+          this_thread::yield();
+        }
+    }
+
+    /**
+     * The main loop of the worker thread
+     */
+    void worker_thread()
+    {
+      while (!closed())
+      {
+        schedule_one_or_yield();
+      }
+      while (try_executing_one())
+      {
+      }
+    }
+
+  public:
+    /// serial_executor is not copyable.
+    BOOST_THREAD_NO_COPYABLE(serial_executor)
+
+    /**
+     * \b Effects: creates a thread pool that runs closures using one of its closure-executing methods.
+     *
+     * \b Throws: Whatever exception is thrown while initializing the needed resources.
+     */
+    template <class Executor>
+    serial_executor(Executor& ex)
+    : ex(ex), thr(&serial_executor::worker_thread, this)
+    {
+    }
+    /**
+     * \b Effects: Destroys the thread pool.
+     *
+     * \b Synchronization: The completion of all the closures happen before the completion of the \c serial_executor destructor.
+     */
+    ~serial_executor()
+    {
+      // signal to the worker thread that there will be no more submissions.
+      close();
+    }
+
+    /**
+     * \b Effects: close the \c serial_executor for submissions.
+     * The loop will work until there is no more closures to run.
+     */
+    void close()
+    {
+      work_queue.close();
+    }
+
+    /**
+     * \b Returns: whether the pool is closed for submissions.
+     */
+    bool closed()
+    {
+      return work_queue.closed();
+    }
+
+    /**
+     * \b Requires: \c Closure is a model of \c Callable(void()) and a model of \c CopyConstructible/MoveConstructible.
+     *
+     * \b Effects: The specified \c closure will be scheduled for execution at some point in the future.
+     * If invoked closure throws an exception the \c serial_executor will call \c std::terminate, as is the case with threads.
+     *
+     * \b Synchronization: completion of \c closure on a particular thread happens before destruction of thread's thread local variables.
+     *
+     * \b Throws: \c sync_queue_is_closed if the thread pool is closed.
+     * Whatever exception that can be throw while storing the closure.
+     */
+    void submit(BOOST_THREAD_RV_REF(work) closure)
+    {
+      work_queue.push(boost::move(closure));
+    }
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <typename Closure>
+    void submit(Closure & closure)
+    {
+      submit(work(closure));
+    }
+#endif
+    void submit(void (*closure)())
+    {
+      submit(work(closure));
+    }
+
+    template <typename Closure>
+    void submit(BOOST_THREAD_FWD_REF(Closure) closure)
+    {
+      work w((boost::forward<Closure>(closure)));
+      submit(boost::move(w));
+    }
+
+    /**
+     * \b Requires: This must be called from an scheduled task.
+     *
+     * \b Effects: reschedule functions until pred()
+     */
+    template <typename Pred>
+    bool reschedule_until(Pred const& pred)
+    {
+      do {
+        if ( ! try_executing_one())
+        {
+          return false;
+        }
+      } while (! pred());
+      return true;
+    }
+
+  };
+}
+using executors::serial_executor;
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/serial_executor_cont.hpp

@@ -0,0 +1,170 @@
+// Copyright (C) 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)
+//
+// 2013/11 Vicente J. Botet Escriba
+//    first implementation of a simple serial scheduler.
+
+#ifndef BOOST_THREAD_SERIAL_EXECUTOR_CONT_HPP
+#define BOOST_THREAD_SERIAL_EXECUTOR_CONT_HPP
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/detail/delete.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/concurrent_queues/sync_queue.hpp>
+#include <boost/thread/executors/work.hpp>
+#include <boost/thread/executors/generic_executor_ref.hpp>
+#include <boost/thread/future.hpp>
+#include <boost/thread/scoped_thread.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+namespace executors
+{
+  class serial_executor_cont
+  {
+  public:
+    /// type-erasure to store the works to do
+    typedef  executors::work work;
+  private:
+
+    generic_executor_ref ex_;
+    future<void> fut_; // protected by mtx_
+    bool closed_; // protected by mtx_
+    mutex mtx_;
+
+    struct continuation {
+      work task;
+      template <class X>
+      struct result {
+        typedef void type;
+      };
+      continuation(BOOST_THREAD_RV_REF(work) tsk)
+      : task(boost::move(tsk)) {}
+      void operator()(future<void> f)
+      {
+        try {
+          task();
+        } catch (...)  {
+          std::terminate();
+        }
+      }
+    };
+
+    bool closed(lock_guard<mutex>&) const
+    {
+      return closed_;
+    }
+  public:
+    /**
+     * \par Returns
+     * The underlying executor wrapped on a generic executor reference.
+     */
+    generic_executor_ref& underlying_executor() BOOST_NOEXCEPT { return ex_; }
+
+    /// serial_executor_cont is not copyable.
+    BOOST_THREAD_NO_COPYABLE(serial_executor_cont)
+
+    /**
+     * \b Effects: creates a serial executor that runs closures in fifo order using one the associated executor.
+     *
+     * \b Throws: Whatever exception is thrown while initializing the needed resources.
+     *
+     * \b Notes:
+     * * The lifetime of the associated executor must outlive the serial executor.
+     * * The current implementation doesn't support submission from synchronous continuation, that is,
+     *     - the executor must execute the continuation asynchronously or
+     *     - the continuation can not submit to this serial executor.
+     */
+    template <class Executor>
+    serial_executor_cont(Executor& ex)
+    : ex_(ex), fut_(make_ready_future()), closed_(false)
+    {
+    }
+    /**
+     * \b Effects: Destroys the thread pool.
+     *
+     * \b Synchronization: The completion of all the closures happen before the completion of the \c serial_executor_cont destructor.
+     */
+    ~serial_executor_cont()
+    {
+      // signal to the worker thread that there will be no more submissions.
+      close();
+    }
+
+    /**
+     * \b Effects: close the \c serial_executor_cont for submissions.
+     * The loop will work until there is no more closures to run.
+     */
+    void close()
+    {
+      lock_guard<mutex> lk(mtx_);
+      closed_ = true;;
+    }
+
+    /**
+     * \b Returns: whether the pool is closed for submissions.
+     */
+    bool closed()
+    {
+      lock_guard<mutex> lk(mtx_);
+      return closed(lk);
+    }
+
+    /**
+     * Effects: none.
+     * Returns: always false.
+     * Throws: No.
+     * Remark: A serial executor can not execute one of its pending tasks as the tasks depends on the other tasks.
+     */
+    bool try_executing_one()
+    {
+      return false;
+    }
+
+    /**
+     * \b Requires: \c Closure is a model of \c Callable(void()) and a model of \c CopyConstructible/MoveConstructible.
+     *
+     * \b Effects: The specified \c closure will be scheduled for execution after the last submitted closure finish.
+     * If the invoked closure throws an exception the \c serial_executor_cont will call \c std::terminate, as is the case with threads.
+     *
+     * \b Throws: \c sync_queue_is_closed if the executor is closed.
+     * Whatever exception that can be throw while storing the closure.
+     *
+     */
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <typename Closure>
+    void submit(Closure & closure)
+    {
+      lock_guard<mutex> lk(mtx_);
+      if (closed(lk))       BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+      fut_ = fut_.then(ex_, continuation(work(closure)));
+    }
+#endif
+    void submit(void (*closure)())
+    {
+      lock_guard<mutex> lk(mtx_);
+      if (closed(lk))       BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+      fut_ = fut_.then(ex_, continuation(work(closure)));
+    }
+
+    template <typename Closure>
+    void submit(BOOST_THREAD_FWD_REF(Closure) closure)
+    {
+      lock_guard<mutex> lk(mtx_);
+      if (closed(lk))       BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+      fut_ = fut_.then(ex_, continuation(work(boost::forward<Closure>(closure))));
+    }
+
+  };
+}
+using executors::serial_executor_cont;
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/thread_executor.hpp

@@ -0,0 +1,157 @@
+// Copyright (C) 2014 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)
+//
+// 2014/01 Vicente J. Botet Escriba
+//    first implementation of a thread_executor.
+
+#ifndef BOOST_THREAD_THREAD_EXECUTOR_HPP
+#define BOOST_THREAD_THREAD_EXECUTOR_HPP
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/detail/delete.hpp>
+#include <boost/thread/detail/move.hpp>
+#include <boost/thread/executors/work.hpp>
+#include <boost/thread/executors/executor.hpp>
+#include <boost/thread/thread_only.hpp>
+#include <boost/thread/scoped_thread.hpp>
+#include <boost/thread/csbl/vector.hpp>
+#include <boost/thread/concurrent_queues/queue_op_status.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+namespace executors
+{
+  class thread_executor
+  {
+  public:
+    /// type-erasure to store the works to do
+    typedef  executors::work work;
+    bool closed_;
+    typedef scoped_thread<> thread_t;
+    typedef csbl::vector<thread_t> threads_type;
+    threads_type threads_;
+    mutable mutex mtx_;
+
+    /**
+     * Effects: try to execute one task.
+     * Returns: whether a task has been executed.
+     * Throws: whatever the current task constructor throws or the task() throws.
+     */
+    bool try_executing_one()
+    {
+      return false;
+    }
+
+  public:
+    /// thread_executor is not copyable.
+    BOOST_THREAD_NO_COPYABLE(thread_executor)
+
+    /**
+     * \b Effects: creates a inline executor that runs closures immediately.
+     *
+     * \b Throws: Nothing.
+     */
+    thread_executor()
+    : closed_(false)
+    {
+    }
+    /**
+     * \b Effects: Waits for closures (if any) to complete, then joins and destroys the threads.
+     *
+     * \b Synchronization: The completion of all the closures happen before the completion of the \c thread_executor destructor.
+     */
+    ~thread_executor()
+    {
+      // signal to all the worker thread that there will be no more submissions.
+      close();
+      // all the scoped threads will join before destroying
+    }
+
+    /**
+     * \b Effects: close the \c thread_executor for submissions.
+     * The loop will work until there is no more closures to run.
+     */
+    void close()
+    {
+      lock_guard<mutex> lk(mtx_);
+      closed_ = true;
+    }
+
+    /**
+     * \b Returns: whether the pool is closed for submissions.
+     */
+    bool closed(lock_guard<mutex>& )
+    {
+      return closed_;
+    }
+    bool closed()
+    {
+      lock_guard<mutex> lk(mtx_);
+      return closed(lk);
+    }
+
+    /**
+     * \b Requires: \c Closure is a model of \c Callable(void()) and a model of \c CopyConstructible/MoveConstructible.
+     *
+     * \b Effects: The specified \c closure will be scheduled for execution at some point in the future.
+     * If invoked closure throws an exception the \c thread_executor will call \c std::terminate, as is the case with threads.
+     *
+     * \b Synchronization: completion of \c closure on a particular thread happens before destruction of thread's thread local variables.
+     *
+     * \b Throws: \c sync_queue_is_closed if the thread pool is closed.
+     * Whatever exception that can be throw while storing the closure.
+     */
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template <typename Closure>
+    void submit(Closure & closure)
+    {
+      lock_guard<mutex> lk(mtx_);
+      if (closed(lk))  BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+      threads_.reserve(threads_.size() + 1);
+      thread th(closure);
+      threads_.push_back(thread_t(boost::move(th)));
+    }
+#endif
+    void submit(void (*closure)())
+    {
+      lock_guard<mutex> lk(mtx_);
+      if (closed(lk))  BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+      threads_.reserve(threads_.size() + 1);
+      thread th(closure);
+      threads_.push_back(thread_t(boost::move(th)));
+    }
+
+    template <typename Closure>
+    void submit(BOOST_THREAD_FWD_REF(Closure) closure)
+    {
+      lock_guard<mutex> lk(mtx_);
+      if (closed(lk))  BOOST_THROW_EXCEPTION( sync_queue_is_closed() );
+      threads_.reserve(threads_.size() + 1);
+      thread th(boost::forward<Closure>(closure));
+      threads_.push_back(thread_t(boost::move(th)));
+    }
+
+    /**
+     * \b Requires: This must be called from an scheduled task.
+     *
+     * \b Effects: reschedule functions until pred()
+     */
+    template <typename Pred>
+    bool reschedule_until(Pred const&)
+    {
+      return false;
+    }
+
+  };
+}
+using executors::thread_executor;
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif

depends/x86_64-pc-linux-gnu/include/boost/thread/executors/work.hpp

@@ -0,0 +1,30 @@
+//  (C) Copyright 2013,2014 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)
+
+#ifndef BOOST_THREAD_EXECUTORS_WORK_HPP
+#define BOOST_THREAD_EXECUTORS_WORK_HPP
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/detail/nullary_function.hpp>
+#include <boost/thread/csbl/functional.hpp>
+
+namespace boost
+{
+  namespace executors
+  {
+    typedef detail::nullary_function<void()> work;
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    typedef detail::nullary_function<void()> work_pq;
+    //typedef csbl::function<void()> work_pq;
+#else
+    typedef csbl::function<void()> work_pq;
+#endif
+  }
+} // namespace boost
+
+
+#endif //  BOOST_THREAD_EXECUTORS_WORK_HPP