SEM(4) NetBSD Kernel Interfaces Manual SEM(4)
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. NetBSD 9.4 August 20, 2015 NetBSD 9.4
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