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SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
copyrights:
- Copyright (C) 2022 embedded brains GmbH (http://www.embedded-brains.de)
enabled-by: true
links: []
test-actions:
- action-brief: |
Use two worker threads to provoke a deadlock detection involving a thread
queue with no owner.
action-code: |
TQReset( &ctx->tq_ctx );
checks:
- brief: |
Let blocker A obtain mutex A.
code: |
TQSend( &ctx->tq_ctx, TQ_BLOCKER_A, TQ_EVENT_MUTEX_A_OBTAIN );
links: []
- brief: |
Let blocker A block on a counting semaphore.
code: |
TQSend( &ctx->tq_ctx, TQ_BLOCKER_A, TQ_EVENT_MUTEX_D_OBTAIN );
links: []
- brief: |
Let blocker B block on mutex A. The deadlock detection will stop since
blocker A blocks on the counting semaphore which has no owner.
code: |
TQSend( &ctx->tq_ctx, TQ_BLOCKER_B, TQ_EVENT_MUTEX_A_OBTAIN );
links:
- role: validation
uid: ../req/deadlock-no-owner
- brief: |
Clean up all used resources.
code: |
TQMutexRelease( &ctx->tq_ctx, TQ_MUTEX_D );
TQSend( &ctx->tq_ctx, TQ_BLOCKER_A, TQ_EVENT_MUTEX_A_RELEASE );
TQSend( &ctx->tq_ctx, TQ_BLOCKER_B, TQ_EVENT_MUTEX_A_RELEASE );
links: []
links: []
test-brief: |
Tests special thread queue behaviour.
test-context:
- brief: |
This member contains the thread queue test context.
description: null
member: |
TQContext tq_ctx
test-context-support: null
test-description: null
test-header: null
test-includes: []
test-local-includes:
- tx-support.h
- tx-thread-queue.h
test-setup:
brief: null
code: |
rtems_status_code sc;
SetSelfPriority( PRIO_NORMAL );
TQInitialize( &ctx->tq_ctx );
/* Replace mutex D with a counting semaphore */
DeleteMutex( ctx->tq_ctx.mutex_id[ TQ_MUTEX_D ] );
sc = rtems_semaphore_create(
rtems_build_name( 'C', 'S', 'E', 'M' ),
0,
RTEMS_COUNTING_SEMAPHORE | RTEMS_PRIORITY,
0,
&ctx->tq_ctx.mutex_id[ TQ_MUTEX_D ]
);
T_rsc_success( sc );
description: null
test-stop: null
test-support: null
test-target: testsuites/validation/tc-score-tq.c
test-teardown:
brief: null
code: |
TQDestroy( &ctx->tq_ctx );
RestoreRunnerPriority();
description: null
type: test-case
|
