2.11BSD#431 - /usr/man/cat2/lock.0

LOCK(2)             UNIX Programmer's Manual		  LOCK(2)


NAME
     lock - lock a process in primary memory (2BSD)

SYNOPSIS
     lock(flag)
     int flag

DESCRIPTION
     If the flag argument is non-zero, the process executing this
     call will not be swapped unless it is required to grow.  If
     the argument is zero, the process is unlocked.  This call
     may only be executed by the super-user.

ERRORS
     [EPERM]	    The caller is not the super-user.

BUGS
     Locked processes interfere with the compaction of primary
     memory and can cause deadlock.  This system call is not con-
     sidered a permanent part of the system.

     Lock is unique to the PDP-11 and 2BSD; its use is
     discouraged.


Printed 11/26/99	January 22, 1987			1