1 files changed, 14 insertions, 0 deletions
diff --git a/src/common/util.h b/src/common/util.h
index dc426830b..a57a85fee 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -91,6 +91,20 @@ namespace tools
     const std::string& filename() const noexcept { return m_filename; }
   };
 
+  class file_locker
+  {
+  public:
+    file_locker(const std::string &filename);
+    ~file_locker();
+    bool locked() const;
+  private:
+#ifdef WIN32
+    HANDLE m_fd;
+#else
+    int m_fd;
+#endif
+  };
+
   /*! \brief Returns the default data directory.
    *
    * \details Windows < Vista: C:\\Documents and Settings\\Username\\Application Data\\CRYPTONOTE_NAME