int main( void )
{
List *list = CreateList( );
node *n;
int x = 17;
int y = 18;
int z = 19;
InsertFront( list, &x, sizeof( int ) );
InsertFront( list, &y, sizeof( int ) );
InsertFront( list, &z, sizeof( int ) );
// Loop through list. It's important to use ListBegin and ListEnd for proper looping.
// Make note of what pointers Begin and End return.
for(n = ListBegin( list ); n != ListEnd( list ); n = n->next)
printf( "%d\n", NODE_DATA( n, int ) );
// Proper way to delete nodes from list is like so:
// note -- we are not doing n = n->next within the for loop, instead
// we use the return value of delete
for(n = ListBegin( list ); n != ListEnd( list );)
n = DeleteNode( list, n );
getchar( );
return 0;
}
/*------------------------------------------------------------------------
------------------------- Execute the photoflo ---------------------------
------------------------------------------------------------------------*/
static Bool execute(floDefPtr flo, peTexPtr importer)
{
bandMsk ready;
peTexPtr pet;
peDefPtr ped;
pedLstPtr lst = ListEmpty(&flo->optDAG) ? &flo->defDAG : &flo->optDAG;
CARD32 sched_count = SCHED_BAIL_OUT;
CARD32 strip_count = flo->floTex->putCnt;
if(importer) {
/* Put the ImportClient element at the head of the ready-list */
InsertMember(importer,&flo->floTex->schedHead);
importer->scheduled = importer->receptor[IMPORT].ready;
}
do {
/* execute elements from the head of the ready-list until it's empty
* (calls to schedule from the data manager may prepend
* additional elements to the ready-list)
*/
while(!ListEmpty(&flo->floTex->schedHead)) {
pet = flo->floTex->schedHead.flink;
if(Activate(flo,pet->peDef,pet) && (ready = runnable(flo,pet))) {
pet->scheduled = ready; /* remember which bands keep us alive */
} else {
/* element is no longer runnable, remove it and check for errors
*/
RemoveMember(pet,pet);
pet->scheduled = 0;
if(ferrCode(flo))
return(flo->flags.active = FALSE);
}
if(strip_count != flo->floTex->putCnt) {
sched_count = SCHED_BAIL_OUT;
strip_count = flo->floTex->putCnt;
} else if( !--sched_count)
ImplementationError(flo,pet->peDef, return(FALSE));
}
/* Load all the elements onto the ready-list that can keep producing
* output without requiring any additional input (e.g. ImportResource
* elements).
*/
for(ped = lst->flink; !ListEnd(ped,lst); ped = ped->flink)
if(ped->peTex->emitting && !ped->peTex->admissionCnt)
InsertMember(ped->peTex,&flo->floTex->schedHead);
/*
* keep on trucking if there's nothing expected from the client
*/
} while(!flo->floTex->imports && !ListEmpty(&flo->floTex->schedHead));
/* if we still have stuff to do, count another round, otherwise shut it down
*/
if(flo->floTex->imports || flo->floTex->exports)
++flo->floTex->exitCnt;
else
ddShutdown(flo);
return(flo->flags.active);
} /* end execute */
void EmptyList( List *list )
{
Node *n;
for(n = ListBegin( list ); n != ListEnd( list ); )
{
n = DeleteNode( list, n );
}
}
