_locking Constants

 

#include <sys/locking.h>

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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.)

Vea también

Referencia

_locking

Global Constants