diff DEPENDENCIES/generic/include/boost/atomic/detail/lockpool.hpp @ 16:2665513ce2d3

Add boost headers

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DEPENDENCIES/generic/include/boost/atomic/detail/lockpool.hpp	Tue Aug 05 11:11:38 2014 +0100
@@ -0,0 +1,91 @@
+#ifndef BOOST_ATOMIC_DETAIL_LOCKPOOL_HPP
+#define BOOST_ATOMIC_DETAIL_LOCKPOOL_HPP
+
+//  Copyright (c) 2011 Helge Bahmann
+//
+//  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)
+
+#include <boost/atomic/detail/config.hpp>
+#include <boost/atomic/detail/link.hpp>
+#ifndef BOOST_ATOMIC_FLAG_LOCK_FREE
+#include <boost/smart_ptr/detail/lightweight_mutex.hpp>
+#endif
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost {
+namespace atomics {
+namespace detail {
+
+#ifndef BOOST_ATOMIC_FLAG_LOCK_FREE
+
+class lockpool
+{
+public:
+    typedef boost::detail::lightweight_mutex lock_type;
+    class scoped_lock :
+        public lock_type::scoped_lock
+    {
+        typedef lock_type::scoped_lock base_type;
+
+    public:
+        explicit scoped_lock(const volatile void * addr) : base_type(get_lock_for(addr))
+        {
+        }
+
+        BOOST_DELETED_FUNCTION(scoped_lock(scoped_lock const&))
+        BOOST_DELETED_FUNCTION(scoped_lock& operator=(scoped_lock const&))
+    };
+
+private:
+    static BOOST_ATOMIC_DECL lock_type& get_lock_for(const volatile void * addr);
+};
+
+#else
+
+class lockpool
+{
+public:
+    typedef atomic_flag lock_type;
+
+    class scoped_lock
+    {
+    private:
+        atomic_flag& flag_;
+
+    public:
+        explicit
+        scoped_lock(const volatile void * addr) : flag_(get_lock_for(addr))
+        {
+            for (; flag_.test_and_set(memory_order_acquire);)
+            {
+#if defined(BOOST_ATOMIC_X86_PAUSE)
+                BOOST_ATOMIC_X86_PAUSE();
+#endif
+            }
+        }
+
+        ~scoped_lock(void)
+        {
+            flag_.clear(memory_order_release);
+        }
+
+        BOOST_DELETED_FUNCTION(scoped_lock(const scoped_lock &))
+        BOOST_DELETED_FUNCTION(scoped_lock& operator=(const scoped_lock &))
+    };
+
+private:
+    static BOOST_ATOMIC_DECL lock_type& get_lock_for(const volatile void * addr);
+};
+
+#endif
+
+}
+}
+}
+
+#endif