blob: 90828ead7b2771877440926827b34ba378776920 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
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: |
Release the mutex.
code: |
ctx->begin = T_tick();
ctx->status = rtems_semaphore_release( ctx->mutex_id );
description: null
test-cleanup: null
test-prepare: null
test-setup:
brief: |
Let one task wait on the mutex.
code: |
ObtainMutex( ctx->mutex_id );
Send( ctx, EVENT_OBTAIN | EVENT_OBTAIN_END | EVENT_RELEASE );
description: null
test-teardown:
brief: |
Set the measured runtime. Discard samples interrupted by a clock tick.
code: |
T_quiet_rsc( ctx->status, RTEMS_SUCCESSFUL );
*delta = ctx->end - ctx->begin;
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/release:/name} which unblocks task V which does preempt 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 semaphore is
a priority inheritance mutex, while exactly task V waits for the mutex,
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
|
