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SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
copyrights:
- Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
enabled-by: true
links:
- role: requirement-refinement
uid: perf-runtime
- role: runtime-measurement-request
uid: ../val/perf
non-functional-type: performance-runtime
params: {}
rationale: null
references: []
requirement-type: non-functional
test-body:
brief: |
Start the worker task.
code: |
ctx->begin = T_tick();
ctx->status = rtems_task_start(
ctx->worker_id,
Worker,
(rtems_task_argument) ctx
);
description: null
test-cleanup: null
test-prepare: null
test-setup:
brief: |
Create a worker task.
code: |
ctx->worker_id = CreateTask( "WORK", PRIO_HIGH );
description: null
test-teardown:
brief: |
Set the measured runtime. Delete the worker. Discard samples interrupted by
a clock tick.
code: |
T_quiet_rsc_success( ctx->status );
*delta = ctx->end - ctx->begin;
DeleteTask( ctx->worker_id );
return tic == toc;
description: null
text: |
Let U and V be two tasks with the same home scheduler. Let :math:`B`
be a time point measured by U right before a call to ${../if/start:/name}
which starts task V which preempts the caller. Let :math:`E` be a time
point measured by V right after the first context switch after :math:`B`.
While the execution environment is ${.:/environment}, while the measurement
sample is :math:`E - B`, when exactly ${../val/perf:/params/sample-count}
samples are collected, the ${.:/limit-kind} shall be ${.:/limit-condition}.
type: requirement
|
