diff options
Diffstat (limited to 'FreeRTOS/Test/VeriFast/queue/prvIsQueueEmpty.c')
-rw-r--r-- | FreeRTOS/Test/VeriFast/queue/prvIsQueueEmpty.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/FreeRTOS/Test/VeriFast/queue/prvIsQueueEmpty.c b/FreeRTOS/Test/VeriFast/queue/prvIsQueueEmpty.c new file mode 100644 index 000000000..3dc5000a8 --- /dev/null +++ b/FreeRTOS/Test/VeriFast/queue/prvIsQueueEmpty.c @@ -0,0 +1,49 @@ +/* + * FreeRTOS VeriFast Proofs + * Copyright (C) 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. + */ + +#include "proof/queue.h" +#define taskENTER_CRITICAL() setInterruptMask( pxQueue ) +#define taskEXIT_CRITICAL() clearInterruptMask( pxQueue ) + +static BaseType_t prvIsQueueEmpty( const Queue_t * pxQueue ) +/*@requires [1/2]queuehandle(pxQueue, ?N, ?M, ?is_isr) &*& is_isr == false;@*/ +/*@ensures [1/2]queuehandle(pxQueue, N, M, is_isr);@*/ +{ + BaseType_t xReturn; + + taskENTER_CRITICAL(); + /*@assert queue(pxQueue, ?Storage, N, M, ?W, ?R, ?K, ?is_locked, ?abs);@*/ + { + if( pxQueue->uxMessagesWaiting == ( UBaseType_t ) 0 ) + { + xReturn = pdTRUE; + } + else + { + xReturn = pdFALSE; + } + } + /*@close queue(pxQueue, Storage, N, M, W, R, K, is_locked, abs);@*/ + taskEXIT_CRITICAL(); + + return xReturn; +} |