Imported Upstream version 1.57.0upstream/1.57.0

1 files changed, 93 insertions, 0 deletions

diff --git a/boost/thread/detail/function_wrapper.hpp b/boost/thread/detail/function_wrapper.hpp
new file mode 100644
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+++ b/boost/thread/detail/function_wrapper.hpp
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+// 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)
+//
+// 2013/09 Vicente J. Botet Escriba
+//    Adapt to boost from CCIA C++11 implementation
+//    Make use of Boost.Move
+
+#ifndef BOOST_THREAD_DETAIL_FUNCTION_WRAPPER_HPP
+#define BOOST_THREAD_DETAIL_FUNCTION_WRAPPER_HPP
+
+#include <boost/config.hpp>
+#include <boost/thread/detail/memory.hpp>
+#include <boost/thread/detail/move.hpp>
+
+#include <boost/thread/csbl/memory/unique_ptr.hpp>
+
+#include <memory>
+#include <functional>
+
+namespace boost
+{
+  namespace detail
+  {
+    class function_wrapper
+    {
+      struct impl_base
+      {
+        virtual void call()=0;
+        virtual ~impl_base()
+        {
+        }
+      };
+      typedef boost::csbl::unique_ptr<impl_base> impl_base_type;
+      impl_base_type impl;
+      template <typename F>
+      struct impl_type: impl_base
+      {
+        F f;
+        impl_type(F const &f_)
+          : f(f_)
+        {}
+        impl_type(BOOST_THREAD_RV_REF(F) f_)
+          : f(boost::move(f_))
+        {}
+
+        void call()
+        {
+          if (impl) f();
+        }
+      };
+    public:
+      BOOST_THREAD_MOVABLE_ONLY(function_wrapper)
+
+//#if ! defined  BOOST_NO_CXX11_RVALUE_REFERENCES
+      template<typename F>
+      function_wrapper(F const& f):
+      impl(new impl_type<F>(f))
+      {}
+//#endif
+      template<typename F>
+      function_wrapper(BOOST_THREAD_RV_REF(F) f):
+      impl(new impl_type<F>(boost::forward<F>(f)))
+      {}
+      function_wrapper(BOOST_THREAD_RV_REF(function_wrapper) other) BOOST_NOEXCEPT :
+      impl(other.impl)
+      {
+        other.impl = 0;
+      }
+      function_wrapper()
+        : impl(0)
+      {
+      }
+      ~function_wrapper()
+      {
+      }
+
+      function_wrapper& operator=(BOOST_THREAD_RV_REF(function_wrapper) other) BOOST_NOEXCEPT
+      {
+        impl=other.impl;
+        other.impl=0;
+        return *this;
+      }
+
+      void operator()()
+      { impl->call();}
+
+    };
+  }
+}
+
+#endif // header