Library prosa.classic.analysis.global.parallel.interference_bound_fp

Require Import prosa.classic.util.all.
Require Import prosa.classic.model.priority.
Require Import prosa.classic.model.schedule.global.workload.
Require Import prosa.classic.model.schedule.global.basic.schedule prosa.classic.model.schedule.global.basic.interference.
Require Import prosa.classic.analysis.global.parallel.workload_bound prosa.classic.analysis.global.parallel.interference_bound.
From mathcomp Require Import ssreflect ssrbool eqtype ssrnat seq fintype bigop.

Module InterferenceBoundFP.

  Import Schedule WorkloadBound Priority Interference.
  Export InterferenceBoundGeneric.

    Section Definitions.

    Context {sporadic_task: eqType}.
    Variable task_cost: sporadic_task → time.
    Variable task_period: sporadic_task → time.
    Variable task_deadline: sporadic_task → time.

    (* Let tsk be the task to be analyzed. *)
    Variable tsk: sporadic_task.

    Let task_with_response_time := (sporadic_task × time)%type.

    (* Assume a known response-time bound for each interfering task ... *)
    Variable R_prev: seq task_with_response_time.

    (* ... and an interval length delta. *)
    Variable delta: time.

    (* Assume an FP policy. *)
    Variable higher_eq_priority: FP_policy sporadic_task.

    (* Recall the interference bound. *)
    Let total_interference_bound := interference_bound_generic task_cost task_period delta.

    (* The total interference incurred by tsk is bounded by the sum
       of individual task interferences. *)
    Definition total_interference_bound_fp :=
      \sum_((tsk_other, R_other) <- R_prev)
         total_interference_bound (tsk_other, R_other).

  End Definitions.

End InterferenceBoundFP.