aboutsummaryrefslogtreecommitdiff
path: root/cutl/details/boost/smart_ptr/detail/atomic_count_sync.hpp
diff options
context:
space:
mode:
Diffstat (limited to 'cutl/details/boost/smart_ptr/detail/atomic_count_sync.hpp')
-rw-r--r--cutl/details/boost/smart_ptr/detail/atomic_count_sync.hpp61
1 files changed, 61 insertions, 0 deletions
diff --git a/cutl/details/boost/smart_ptr/detail/atomic_count_sync.hpp b/cutl/details/boost/smart_ptr/detail/atomic_count_sync.hpp
new file mode 100644
index 0000000..3be0447
--- /dev/null
+++ b/cutl/details/boost/smart_ptr/detail/atomic_count_sync.hpp
@@ -0,0 +1,61 @@
+#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED
+
+//
+// boost/detail/atomic_count_sync.hpp
+//
+// atomic_count for g++ 4.1+
+//
+// http://gcc.gnu.org/onlinedocs/gcc-4.1.1/gcc/Atomic-Builtins.html
+//
+// Copyright 2007 Peter Dimov
+//
+// 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)
+//
+
+#if defined( __ia64__ ) && defined( __INTEL_COMPILER )
+# include <ia64intrin.h>
+#endif
+
+namespace cutl_details_boost
+{
+
+namespace detail
+{
+
+class atomic_count
+{
+public:
+
+ explicit atomic_count( long v ) : value_( v ) {}
+
+ long operator++()
+ {
+ return __sync_add_and_fetch( &value_, 1 );
+ }
+
+ long operator--()
+ {
+ return __sync_add_and_fetch( &value_, -1 );
+ }
+
+ operator long() const
+ {
+ return __sync_fetch_and_add( &value_, 0 );
+ }
+
+private:
+
+ atomic_count(atomic_count const &);
+ atomic_count & operator=(atomic_count const &);
+
+ mutable long value_;
+};
+
+} // namespace detail
+
+} // namespace cutl_details_boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED