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sem (4)
>> sem (4) ( FreeBSD man: Специальные файлы /dev/* )
BSD mandoc
NAME
sem
- POSIX semaphores
SYNOPSIS
To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
options P1003_1B_SEMAPHORES
Alternatively, to load the driver as a
module at boot time, place the following line in
loader.conf5:
sem_load="YES"
"kldload sem"
DESCRIPTION
The
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.