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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: RTEMS_SMP
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: |
Automatically release the barrier.
code: |
ctx->begin = T_tick();
ctx->status = rtems_barrier_wait( ctx->barrier_id, RTEMS_NO_TIMEOUT );
description: null
test-cleanup:
brief: |
Delete the barrier and the worker.
code: |
rtems_status_code sc;
DeleteTask( ctx->worker_id );
sc = rtems_barrier_delete( ctx->barrier_id );
T_rsc_success( sc );
description: null
test-prepare:
brief: |
Create an automatic release barrier. Create and start a worker task.
code: |
rtems_status_code sc;
sc = rtems_barrier_create(
OBJECT_NAME,
RTEMS_BARRIER_AUTOMATIC_RELEASE,
2,
&ctx->barrier_id
);
T_rsc_success( sc );
ctx->worker_id = CreateTask( "WORK", PRIO_NORMAL );
SetScheduler( ctx->worker_id, SCHEDULER_B_ID, PRIO_NORMAL );
StartTask( ctx->worker_id, BarrierWaitWorker, ctx );
WaitForNextTask( 1, ctx->worker_id );
description: null
test-setup: null
test-teardown:
brief: |
Make sure the worker waits for the next event. Set the measured runtime.
Discard samples interrupted by a clock tick.
code: |
T_quiet_rsc_success( ctx->status );
WaitForNextTask( 1, ctx->worker_id );
*delta = ctx->end - ctx->begin;
return tic == toc;
description: null
text: |
Let U and V be two tasks with distinct home schedulers. Let :math:`B`
be a time point measured by U right before a call to ${../if/wait:/name}
which automatically releases the barrier. Let :math:`E` be a time point
measured by V right after a call to ${../if/wait:/name} returns
successfully due to the ${../if/wait:/name} call associated with :math:`B`.
While the execution environment is ${.:/environment}, while the barrier is an
automatic release barrier, 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
|
