1 files changed, 49 insertions, 0 deletions
diff --git a/libodb/odb/details/win32/lock.hxx b/libodb/odb/details/win32/lock.hxx
new file mode 100644
index 0000000..2e81ac6
--- /dev/null
+++ b/libodb/odb/details/win32/lock.hxx
@@ -0,0 +1,49 @@
+// file      : odb/details/win32/lock.hxx
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_DETAILS_WIN32_LOCK_HXX
+#define ODB_DETAILS_WIN32_LOCK_HXX
+
+#include <odb/pre.hxx>
+
+#include <odb/details/win32/windows.hxx>
+
+namespace odb
+{
+  namespace details
+  {
+    // Critical section lock. Not exported; for internal use only.
+    //
+    struct win32_lock
+    {
+      win32_lock (CRITICAL_SECTION& cs)
+          : cs_ (&cs)
+      {
+        EnterCriticalSection (cs_);
+      }
+
+      ~win32_lock ()
+      {
+        if (cs_ != 0)
+          LeaveCriticalSection (cs_);
+      }
+
+      void
+      unlock ()
+      {
+        if (cs_ != 0)
+        {
+          LeaveCriticalSection (cs_);
+          cs_ = 0;
+        }
+      }
+
+    private:
+      CRITICAL_SECTION* cs_;
+    };
+  }
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_DETAILS_WIN32_LOCK_HXX