sem -- Kernel Module

Kernel module for semaphores

The kernel  module sem enables  System V-style semaphores.  It  is called a
kernel module  because you can link  it into your kernel  or exclude it, as
you wish,  just like a device  driver; yet it is not  a true device devicer
because it does not perform I/O with a peripheral device.

See Also

device drivers,
kernel,
semctl()

© 2012 by Stephen A. Ness