NAME
sem —
POSIX semaphores
SYNOPSIS
The POSIX semaphore code is included by default in all kernels.
DESCRIPTION
The
sem facility provides system calls used by the standard C
library (libc) to implement POSIX semaphores.
SEE ALSO
config(1),
sem_destroy(3),
sem_getvalue(3),
sem_init(3),
sem_open(3),
sem_post(3),
sem_wait(3),
options(4)
HISTORY
The
sem facility appeared as a kernel option in
NetBSD 2.0 and became non-optional in
NetBSD 7.0.