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27 #ifndef QUEUECONTRACTS_H
28 #define QUEUECONTRACTS_H
32 void prvCopyDataFromQueue( Queue_t * const pxQueue,
33 void * const pvBuffer );
34 /*@requires queue(pxQueue, ?Storage, ?N, ?M, ?W, ?R, ?K, ?is_locked, ?abs) &*& 0 < K &*& chars(pvBuffer, M, _);@*/
36 /*@ensures queue_after_prvCopyDataFromQueue(pxQueue, Storage, N, M, W, (R+1)%N, K, is_locked, abs) &*&
37 * chars(pvBuffer, M, head(abs));@*/
39 BaseType_t prvCopyDataToQueue( Queue_t * const pxQueue,
40 const void * pvItemToQueue,
41 const BaseType_t xPosition );
43 /*@requires queue(pxQueue, ?Storage, ?N, ?M, ?W, ?R, ?K, ?is_locked, ?abs) &*&
44 * (K < N || xPosition == queueOVERWRITE) &*&
45 * chars(pvItemToQueue, M, ?x) &*&
46 * (xPosition == queueSEND_TO_BACK || xPosition == queueSEND_TO_FRONT || (xPosition == queueOVERWRITE && N == 1));@*/
49 * (xPosition == queueSEND_TO_BACK
50 * ? queue(pxQueue, Storage, N, M, (W+1)%N, R, (K+1), is_locked, append(abs, singleton(x)))
51 * : (xPosition == queueSEND_TO_FRONT
53 * ? queue(pxQueue, Storage, N, M, W, (N-1), (K+1), is_locked, cons(x, abs))
54 * : queue(pxQueue, Storage, N, M, W, (R-1), (K+1), is_locked, cons(x, abs)))
55 * : xPosition == queueOVERWRITE &*& queue(pxQueue, Storage, N, M, W, R, 1, is_locked, singleton(x)))
57 * chars(pvItemToQueue, M, x);@*/
59 BaseType_t prvIsQueueEmpty( Queue_t * pxQueue );
60 /*@requires [1/2]queuehandle(pxQueue, ?N, ?M, ?is_isr) &*& is_isr == false;@*/
61 /*@ensures [1/2]queuehandle(pxQueue, N, M, is_isr);@*/
63 BaseType_t prvIsQueueFull( Queue_t * pxQueue );
64 /*@requires [1/2]queuehandle(pxQueue, ?N, ?M, ?is_isr) &*& is_isr == false;@*/
65 /*@ensures [1/2]queuehandle(pxQueue, N, M, is_isr);@*/
67 #endif /* QUEUECONTRACTS_H */