Imported Upstream version 3.3.0.2upstream/3.3.0.2

1 files changed, 47 insertions, 0 deletions

diff --git a/libcult/cult/mm/arch/generic/counter.ixx b/libcult/cult/mm/arch/generic/counter.ixx
new file mode 100644
index 0000000..648d28a
--- /dev/null
+++ b/libcult/cult/mm/arch/generic/counter.ixx
@@ -0,0 +1,47 @@
+// file      : cult/mm/arch/generic/counter.ixx
+// author    : Boris Kolpackov <boris@kolpackov.net>
+// copyright : Copyright (c) 2005-2010 Boris Kolpackov
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#include <cult/sched/lock.hxx>
+
+namespace Cult
+{
+  namespace MM
+  {
+    inline
+    Counter::
+    Counter ()
+        : value_ (1)
+    {
+    }
+
+    inline
+    Void Counter::
+    inc_ref ()
+    {
+      Sched::Lock l (spin_);
+
+      ++value_;
+    }
+
+    inline
+    Boolean Counter::
+    dec_ref ()
+    {
+      Sched::Lock l (spin_);
+
+      return --value_ == 0;
+
+    }
+
+    inline
+    Size Counter::
+    count () const
+    {
+      Sched::Lock l (spin_);
+
+      return value_;
+    }
+  }
+}