comparison DEPENDENCIES/generic/include/boost/asio/detail/thread_info_base.hpp @ 16:2665513ce2d3

Add boost headers

+//
+// detail/thread_info_base.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2013 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_THREAD_INFO_BASE_HPP
+#define BOOST_ASIO_DETAIL_THREAD_INFO_BASE_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <climits>
+#include <cstddef>
+#include <boost/asio/detail/noncopyable.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+
+class thread_info_base
+  : private noncopyable
+{
+public:
+  thread_info_base()
+    : reusable_memory_(0)
+  {
+  }
+
+  ~thread_info_base()
+  {
+    if (reusable_memory_)
+      ::operator delete(reusable_memory_);
+  }
+
+  static void* allocate(thread_info_base* this_thread, std::size_t size)
+  {
+    if (this_thread && this_thread->reusable_memory_)
+    {
+      void* const pointer = this_thread->reusable_memory_;
+      this_thread->reusable_memory_ = 0;
+
+      unsigned char* const mem = static_cast<unsigned char*>(pointer);
+      if (static_cast<std::size_t>(mem[0]) >= size)
+      {
+        mem[size] = mem[0];
+        return pointer;
+      }
+
+      ::operator delete(pointer);
+    }
+
+    void* const pointer = ::operator new(size + 1);
+    unsigned char* const mem = static_cast<unsigned char*>(pointer);
+    mem[size] = (size <= UCHAR_MAX) ? static_cast<unsigned char>(size) : 0;
+    return pointer;
+  }
+
+  static void deallocate(thread_info_base* this_thread,
+      void* pointer, std::size_t size)
+  {
+    if (size <= UCHAR_MAX)
+    {
+      if (this_thread && this_thread->reusable_memory_ == 0)
+      {
+        unsigned char* const mem = static_cast<unsigned char*>(pointer);
+        mem[0] = mem[size];
+        this_thread->reusable_memory_ = pointer;
+        return;
+      }
+    }
+
+    ::operator delete(pointer);
+  }
+
+private:
+  void* reusable_memory_;
+};
+
+} // namespace detail
+} // namespace asio
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // BOOST_ASIO_DETAIL_THREAD_INFO_BASE_HPP