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SEM(4) | Device Drivers Manual | SEM(4) |
NAME¶
sem
—
POSIX semaphores
SYNOPSIS¶
To compile this driver into the kernel, place the following line in your kernel configuration file:options
P1003_1B_SEMAPHORES
sem_load="YES"
kldload sem
DESCRIPTION¶
Thesem
facility provides system calls used
by the standard C library (libc) to
implement POSIX semaphores. This facility offers support for such functions as
sem_init
() and
sem_wait
(). It is available both as a
kernel option for static inclusion and as a dynamic kernel module.
SEE ALSO¶
sem_destroy(3), sem_getvalue(3), sem_init(3), sem_open(3), sem_post(3), sem_wait(3), config(8), kldload(8), kldunload(8)HISTORY¶
Thesem
facility appeared in
FreeBSD 5.0.February 7, 2014 | Debian |