+inline int UnlockMutex(int fd);
+/* Function ReadMutex: read a mutex (using file locking). See Mutex.c */
+inline int ReadMutex(int fd);
+/* Function RemoveMutex: remove a mutex (using file locking). See Mutex.c */
+inline int RemoveMutex(const char *path_name);
+/*
+ * Lock files function: to create and destroy lock files
+ */