mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-10-16 01:37:45 -04:00
4f87f485d5
* Undo syntax changes preventing VeriFast parsing * Update proofs inline with source changes Outstanding: - xQueueGenericReset return code - Not using prvIncrementQueueTxLock or prvIncrementQueueRxLock macros * Remove git hash check * Document new changes between proven code and implementation * Update copyright header * VeriFast proofs: turn off uncrustify checks Uncrustify requires formatting of comments that is at odds with VeriFast's proof annotations, which are contained within comments. * Update ci.yml Co-authored-by: Joseph Julicher <jjulicher@mac.com> Co-authored-by: Aniruddha Kanhere <60444055+AniruddhaKanhere@users.noreply.github.com>
77 lines
3 KiB
C
77 lines
3 KiB
C
/*
|
|
* FreeRTOS V202112.00
|
|
* Copyright (C) 2020 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.
|
|
*
|
|
* https://www.FreeRTOS.org
|
|
* https://github.com/FreeRTOS
|
|
*
|
|
*/
|
|
|
|
/* *INDENT-OFF* */
|
|
|
|
#include "proof/queue.h"
|
|
|
|
/* It may seem that the read of `pxQueue->uxMessagesWaiting` is required to be
|
|
* contained in a critical region to be thread-safe. However, it is impossible for
|
|
* this read to be involved in a data race due to the atomicity mechanism used by
|
|
* tasks and ISRs: masking and enabling interrupts. If we assume (1) a
|
|
* uniprocessor system and (2) that higher priority ISRs never call queue API
|
|
* functions then masking interrupts ensures *strong isolation* meaning critical
|
|
* regions protected by interrupt masking/enabling are isolated from other
|
|
* critical regions and code outside of critical regions. */
|
|
|
|
UBaseType_t uxQueueMessagesWaitingFromISR( const QueueHandle_t xQueue )
|
|
/*@requires queue(xQueue, ?Storage, ?N, ?M, ?W, ?R, ?K, ?is_locked, ?abs);@*/
|
|
/*@ensures queue(xQueue, Storage, N, M, W, R, K, is_locked, abs) &*& result == K;@*/
|
|
{
|
|
UBaseType_t uxReturn;
|
|
|
|
#ifdef VERIFAST /*< const pointer declaration */
|
|
Queue_t * pxQueue = xQueue;
|
|
#else
|
|
Queue_t * const pxQueue = xQueue;
|
|
#endif
|
|
|
|
configASSERT( pxQueue );
|
|
uxReturn = pxQueue->uxMessagesWaiting;
|
|
|
|
return uxReturn;
|
|
}
|
|
|
|
UBaseType_t uxQueueMessagesWaiting( const QueueHandle_t xQueue )
|
|
/*@requires [1/2]queuehandle(xQueue, ?N, ?M, ?is_isr) &*& is_isr == false;@*/
|
|
/*@ensures [1/2]queuehandle(xQueue, N, M, is_isr);@*/
|
|
{
|
|
UBaseType_t uxReturn;
|
|
|
|
configASSERT( xQueue );
|
|
|
|
taskENTER_CRITICAL();
|
|
{
|
|
/*@assert queue(xQueue, ?Storage, N, M, ?W, ?R, ?K, ?is_locked, ?abs);@*/
|
|
uxReturn = ( ( Queue_t * ) xQueue )->uxMessagesWaiting;
|
|
/*@close queue(xQueue, Storage, N, M, W, R, K, is_locked, abs);@*/
|
|
}
|
|
taskEXIT_CRITICAL();
|
|
|
|
return uxReturn;
|
|
} /*lint !e818 Pointer cannot be declared const as xQueue is a typedef not pointer. */
|
|
|
|
/* *INDENT-ON* */
|