1 // Copyright (c) 1992-1999 Matra Datavision
2 // Copyright (c) 1999-2014 OPEN CASCADE SAS
4 // This file is part of Open CASCADE Technology software library.
6 // This library is free software; you can redistribute it and/or modify it under
7 // the terms of the GNU Lesser General Public License version 2.1 as published
8 // by the Free Software Foundation, with special exception defined in the file
9 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
10 // distribution for complete text of the license and disclaimer of any warranty.
12 // Alternatively, this file may be used under the terms of Open CASCADE
13 // commercial license or contractual agreement.
15 #ifndef _OSD_LockType_HeaderFile
16 #define _OSD_LockType_HeaderFile
19 //! NoLock is the default value when opening a file.
21 //! ReadLock allows only one reading of the file at a time.
23 //! WriteLock prevents others writing into a file(excepted the user
24 //! who puts the lock)but allows everybody to read.
26 //! ExclusiveLock prevents reading and writing except for the
27 //! current user of the file.
28 //! So ExclusiveLock means only one user on the file and this
29 //! user is the one who puts the lock.
38 #endif // _OSD_LockType_HeaderFile