_locking Constants
Visual Studio 2005
#include <sys/locking.h>
The mode argument in the call to the _locking function specifies the locking action to be performed.
The mode argument must be one of the following manifest constants.
- _LK_LOCK
-
Locks the specified bytes. If the bytes cannot be locked, the function tries again after 1 second. If, after 10 attempts, the bytes cannot be locked, the function returns an error.
- _LK_RLCK
-
Same as _LK_LOCK.
- _LK_NBLCK
-
Locks the specified bytes. If bytes cannot be locked, the function returns an error.
- _LK_NBRLCK
-
Same as _LK_NBLCK.
- _LK_UNLCK
-
Unlocks the specified bytes. (The bytes must have been previously locked.)
