diff options
Diffstat (limited to 'FreeRTOS/Test/CBMC/proofs/Queue/QueueTakeMutexRecursive/QueueTakeMutexRecursive_harness.c')
-rw-r--r-- | FreeRTOS/Test/CBMC/proofs/Queue/QueueTakeMutexRecursive/QueueTakeMutexRecursive_harness.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/FreeRTOS/Test/CBMC/proofs/Queue/QueueTakeMutexRecursive/QueueTakeMutexRecursive_harness.c b/FreeRTOS/Test/CBMC/proofs/Queue/QueueTakeMutexRecursive/QueueTakeMutexRecursive_harness.c new file mode 100644 index 000000000..9864321e0 --- /dev/null +++ b/FreeRTOS/Test/CBMC/proofs/Queue/QueueTakeMutexRecursive/QueueTakeMutexRecursive_harness.c @@ -0,0 +1,71 @@ +/* + * FreeRTOS memory safety proofs with CBMC. + * Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * http://aws.amazon.com/freertos + * http://www.FreeRTOS.org + */ + +#include "FreeRTOS.h" +#include "queue.h" +#include "tasksStubs.h" +#include "queue_datastructure.h" +#include "cbmc.h" + +QueueHandle_t xMutex; + +void vTaskInternalSetTimeOutState( TimeOut_t * const pxTimeOut ) +{ + /* QueueSemaphoreTake might be blocked to wait for + another process to release a token to the semaphore. + This is currently not in the CBMC model. Anyhow, + vTaskInternalSetTimeOutState is set a timeout for + QueueSemaphoreTake operation. We use this to model a successful + release during wait time. */ + UBaseType_t bound; + __CPROVER_assume((bound >= 0 && xMutex->uxLength >= bound)); + xMutex->uxMessagesWaiting = bound; +} + +BaseType_t xTaskGetSchedulerState( void ) { + BaseType_t ret; + __CPROVER_assume(ret != taskSCHEDULER_SUSPENDED); + return ret; +} + +void harness() { + uint8_t ucQueueType; + xMutex = xQueueCreateMutex(ucQueueType); + TickType_t xTicksToWait; + + /* Init task stub to make sure that the QueueSemaphoreTake_BOUND - 1 + loop iteration simulates a time out */ + vInitTaskCheckForTimeOut(0, QueueSemaphoreTake_BOUND - 1); + + if(xMutex){ + xMutex->cTxLock = PRV_UNLOCK_UNWINDING_BOUND - 1; + xMutex->cRxLock = PRV_UNLOCK_UNWINDING_BOUND - 1; + xMutex->uxMessagesWaiting = nondet_UBaseType_t(); + xQueueTakeMutexRecursive(xMutex, xTicksToWait); + } +} |