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SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
copyrights:
- Copyright (C) 2021 embedded brains GmbH & Co. KG
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: |
Receive a message. Wait with a timeout.
code: |
uint64_t message;
size_t size;
ctx->begin = T_tick();
ctx->status = rtems_message_queue_receive(
ctx->queue_id,
&message,
&size,
RTEMS_WAIT,
UINT32_MAX
);
description: null
test-cleanup: null
test-prepare: null
test-setup:
brief: |
Schedule a message send.
code: |
SetPriority( ctx->worker_id, PRIO_LOW );
Send( ctx, EVENT_END | EVENT_SEND );
description: null
test-teardown:
brief: |
Set the measured runtime. Restore the worker priority. Discard samples
interrupted by a clock tick.
code: |
T_quiet_rsc_success( ctx->status );
*delta = ctx->end - ctx->begin;
SetPriority( ctx->worker_id, PRIO_HIGH );
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/receive:/name} which blocks on the message queue with a timeout. 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 a message queue
is empty, 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
|
