add boost on mac

macx64/include/boost/sort/common/spinlock.hpp

@@ -0,0 +1,88 @@
+//----------------------------------------------------------------------------
+/// @file spinlock_t.hpp
+/// @brief
+///
+/// @author Copyright (c) 2010 2015 Francisco José Tapia (fjtapia@gmail.com )\n
+///         Distributed under the Boost Software License, Version 1.0.\n
+///         ( See accompanyingfile LICENSE_1_0.txt or copy at
+///           http://www.boost.org/LICENSE_1_0.txt  )
+/// @version 0.1
+///
+/// @remarks
+//-----------------------------------------------------------------------------
+#ifndef __BOOST_SORT_PARALLEL_DETAIL_UTIL_SPINLOCK_HPP
+#define __BOOST_SORT_PARALLEL_DETAIL_UTIL_SPINLOCK_HPP
+
+#include <atomic>
+#include <ctime>
+#include <functional>
+#include <memory>
+#include <mutex>
+#include <thread>
+
+namespace boost
+{
+namespace sort
+{
+namespace common
+{
+//
+//---------------------------------------------------------------------------
+/// @class spinlock_t
+/// @brief This class implement, from atomic variables, a spinlock
+/// @remarks This class meet the BasicLockable requirements ( lock, unlock )
+//---------------------------------------------------------------------------
+class spinlock_t
+{
+  private:
+    //------------------------------------------------------------------------
+    //             P R I V A T E      V A R I A B L E S
+    //------------------------------------------------------------------------
+    std::atomic_flag af;
+
+  public:
+    //
+    //-------------------------------------------------------------------------
+    //  function : spinlock_t
+    /// @brief  class constructor
+    /// @param [in]
+    //-------------------------------------------------------------------------
+    explicit spinlock_t ( ) noexcept { af.clear ( ); };
+    //
+    //-------------------------------------------------------------------------
+    //  function : lock
+    /// @brief  Lock the spinlock_t
+    //-------------------------------------------------------------------------
+    void lock ( ) noexcept
+    {
+    	while (af.test_and_set (std::memory_order_acquire))
+        {
+            std::this_thread::yield ( );
+        };
+    };
+    //
+    //-------------------------------------------------------------------------
+    //  function : try_lock
+    /// @brief Try to lock the spinlock_t, if not, return false
+    /// @return true : locked
+    ///         false: not previous locked
+    //-------------------------------------------------------------------------
+    bool try_lock ( ) noexcept
+    {
+        return not af.test_and_set (std::memory_order_acquire);
+    };
+    //
+    //-------------------------------------------------------------------------
+    //  function : unlock
+    /// @brief  unlock the spinlock_t
+    //-------------------------------------------------------------------------
+    void unlock ( ) noexcept { af.clear (std::memory_order_release); };
+
+}; // E N D    C L A S S     S P I N L O C K
+//
+//***************************************************************************
+}; // end namespace common
+}; // end namespace sort
+}; // end namespace boost
+//***************************************************************************
+#endif