1 files changed, 30 insertions, 0 deletions
diff --git a/odb/details/win32/once.ixx b/odb/details/win32/once.ixx
new file mode 100644
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--- /dev/null
+++ b/odb/details/win32/once.ixx
@@ -0,0 +1,30 @@
+// file      : odb/details/win32/once.ixx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#include <odb/details/win32/lock.hxx>
+
+namespace odb
+{
+  namespace details
+  {
+    inline once::
+    once ()
+        : called_ (false)
+    {
+    }
+
+    inline void once::
+    call (void (*func) ())
+    {
+      win32_lock l (cs_);
+
+      if (!called_)
+      {
+        func ();
+        called_ = true;
+      }
+    }
+  }
+}