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Updated ready list invariant from requiring exactly 1 idle task to configNUM_CORES idle tasks.

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This commit is contained in:
Tobias Reinhard 2022-12-07 07:34:46 -05:00
parent 9a81e7b860
commit 136b1d69b2
2 changed files with 6 additions and 6 deletions
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2
tasks.c
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@ -1079,7 +1079,7 @@ static void prvYieldForTask( TCB_t * pxTCB,
&*&
subset(gOwners, gTasks) == true &*&
(uxCurrentPriority == 0
? length(gCells) == 2
? length(gCells) == configNUM_CORES
: true
) &*&
List_array_p(&pxReadyTasksLists, uxCurrentPriority, gPrefCellLists,

10
verification/verifast/proof/ready_list_predicates.h
View file

@ -18,7 +18,7 @@ predicate readyLists_p(list<list<struct xLIST_ITEM*> > gCellLists,
length(gCellLists) == length(gOwnerLists) &*&
// List of priority 0 always contains the idle task and the end marker
// nothing else
length( nth(0, gCellLists) ) == 2;
length( nth(0, gCellLists) ) == configNUM_CORES;
predicate List_array_p(List_t* array, int size,
@ -139,7 +139,7 @@ lemma void closeUnchanged_readyLists(list<list<struct xLIST_ITEM*> > cellLists,
requires
configMAX_PRIORITIES == length(cellLists) &*&
configMAX_PRIORITIES == length(ownerLists) &*&
length( nth(0, cellLists) ) == 2 &*&
length( nth(0, cellLists) ) == configNUM_CORES &*&
List_array_p(&pxReadyTasksLists, ?gIndex, ?gPrefCellLists, ?gPrefOwnerLists) &*&
gIndex < length(cellLists) &*&
xLIST(&pxReadyTasksLists + gIndex, ?gLen, _, _, ?gCells, ?gVals, ?gOwners) &*&
@ -181,7 +181,7 @@ lemma void closeReordered_readyLists(list<list<struct xLIST_ITEM*> > cellLists,
requires
configMAX_PRIORITIES == length(cellLists) &*&
configMAX_PRIORITIES == length(ownerLists) &*&
length( nth(0, cellLists) ) == 2 &*&
length( nth(0, cellLists) ) == configNUM_CORES &*&
List_array_p(&pxReadyTasksLists, ?gIndex, ?gPrefCellLists, ?gPrefOwnerLists) &*&
gIndex < length(cellLists) &*&
xLIST(&pxReadyTasksLists + gIndex, ?gLen, _, _, reorderedCells, _, reorderedOwners) &*&
@ -220,7 +220,7 @@ ensures
assert( nth(0, gPrefCellLists) == nth(0, cellLists) );
}
assert( length(nth(0, gReorderedCellLists)) == length(nth(0, cellLists)) );
assert( length(nth(0, gReorderedCellLists)) == 2 );
assert( length(nth(0, gReorderedCellLists)) == configNUM_CORES );
close readyLists_p(gReorderedCellLists, gReorderedOwnerLists);
@ -256,7 +256,7 @@ void VF_reordeReadyList(List_t* pxReadyList, ListItem_t * pxTaskItem)
&*&
length(gCellLists) == configMAX_PRIORITIES &*&
length(gOwnerLists) == configMAX_PRIORITIES &*&
length(nth(0, gCellLists)) == 2 &*&
length(nth(0, gCellLists)) == configNUM_CORES &*&
0 <= gOffset &*& gOffset < length(gCellLists)
&*&
// current ready list