1 files changed, 106 insertions, 0 deletions
diff --git a/boost/asio/detail/recycling_allocator.hpp b/boost/asio/detail/recycling_allocator.hpp
new file mode 100644
index 0000000000..050e8bdfa0
--- /dev/null
+++ b/boost/asio/detail/recycling_allocator.hpp
@@ -0,0 +1,106 @@
+//
+// detail/recycling_allocator.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// 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_ASIO_DETAIL_RECYCLING_ALLOCATOR_HPP
+#define BOOST_ASIO_DETAIL_RECYCLING_ALLOCATOR_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/config.hpp>
+#include <boost/asio/detail/memory.hpp>
+#include <boost/asio/detail/thread_context.hpp>
+#include <boost/asio/detail/thread_info_base.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+
+template <typename T>
+class recycling_allocator
+{
+public:
+  typedef T value_type;
+
+  template <typename U>
+  struct rebind
+  {
+    typedef recycling_allocator<U> other;
+  };
+
+  recycling_allocator()
+  {
+  }
+
+  template <typename U>
+  recycling_allocator(const recycling_allocator<U>&)
+  {
+  }
+
+  T* allocate(std::size_t n)
+  {
+    typedef thread_context::thread_call_stack call_stack;
+    void* p = thread_info_base::allocate(call_stack::top(), sizeof(T) * n);
+    return static_cast<T*>(p);
+  }
+
+  void deallocate(T* p, std::size_t n)
+  {
+    typedef thread_context::thread_call_stack call_stack;
+    thread_info_base::deallocate(call_stack::top(), p, sizeof(T) * n);
+  }
+};
+
+template <>
+class recycling_allocator<void>
+{
+public:
+  typedef void value_type;
+
+  template <typename U>
+  struct rebind
+  {
+    typedef recycling_allocator<U> other;
+  };
+
+  recycling_allocator()
+  {
+  }
+
+  template <typename U>
+  recycling_allocator(const recycling_allocator<U>&)
+  {
+  }
+};
+
+template <typename Allocator>
+struct get_recycling_allocator
+{
+  typedef Allocator type;
+  static type get(const Allocator& a) { return a; }
+};
+
+template <typename T>
+struct get_recycling_allocator<std::allocator<T> >
+{
+  typedef recycling_allocator<T> type;
+  static type get(const std::allocator<T>&) { return type(); }
+};
+
+} // namespace detail
+} // namespace asio
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // BOOST_ASIO_DETAIL_RECYCLING_ALLOCATOR_HPP