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SPDX-License-Identifier: CC-BY-SA-4.0
copyrights:
- Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
enabled-by: true
links:
- role: requirement-refinement
  uid: sys-lock-mutex-acquire-timed
- role: requirement-refinement
  uid: sys-lock-mutex-recursive-acquire-timed
functional-type: function
rationale: null
references: []
requirement-type: functional
text: |
  While the mutex is not available, while the timeout parameter does not
  specify a valid absolute ${/glossary/clock-realtime:/term} time point, if an
  attempt to acquire the mutex is made, then the directive shall immediately
  return with a status code of ${/c/if/einval:/name}.
type: requirement