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+// file : odb/details/win32/lock.hxx
+// author : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
+// 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 <windows.h>
+
+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