Nonfunctional Requirements

• Contracts usually state what is done under which provisions

• What about time taken, resources needed, etc?

  • Use of shared resources (e.g. heap)
  • In concurrent RT environment, priorities and their interactions

• Nonfunctional requirements can break components as well as functional ones

• C++ Standard Template Library (Usser & Saini, 96), execution time is bounded

  • Not in seconds, but as a complexity of legal implementation

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