path: root/spec/acfg/if/posix-timer-face-behavior.yml

SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
appl-config-option-type: feature-enable
copyrights:
- Copyright (C) 2022 On-Line Applications Research Corporation (OAR)
description: |
  If this configuration option is defined, then POSIX timers may not be created
  to use the ${/glossary/clock-realtime:/term}.  Per POSIX, this is allowed
  behavior but per the FACE Technical Standard, it is not. Using POSIX timers
  based on CLOCK_REALTIME (e.g., time of day) is unsafe for real-time safety
  systems as setting CLOCK_REALTIME will perturb any active timers.

  If this option is not defined, POSIX timers may be created to use the
  CLOCK_REALTIME in compliance with the POSIX specification.
enabled-by: true
index-entries: []
interface-type: appl-config-option
links:
- role: interface-placement
  uid: domain
- role: interface-ingroup
  uid: group-face
- role: constraint
  uid: ../constraint/option-not-pre-qualified
name: CONFIGURE_POSIX_TIMERS_FACE_BEHAVIOR
notes: null
type: interface