static void takeABus (unsigned int k, unsigned int id)
{
/* enter critical region */
if (semDown (semgid, sh->access) == -1)
{
perror ("error on the down operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
/* insert your code here */
int i,counter=0;
//she queues
queueIn(&sh->fSt.busQueue,id);
for(i=0;i<T;i++)
{
//if the number of queueing passengers
if(queuePeek(&sh->fSt.busQueue,i) != EMPTYPOS)
{
counter++;
}
}
//equals the number os seats in the bus
if(counter==T)
{
//she informs the bus driver it is time start boarding
if (semUp (semgid, sh->waitingDrive) == -1)
{
perror ("error on the up operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
}
// Change State
sh->fSt.st.passStat[k][id].stat = AT_THE_ARRIVAL_TRANSFER_TERMINAL;
saveState (nFic,k,&(sh->fSt));
if (semUp (semgid, sh->access) == -1)
{
perror ("error on the up operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
/* insert your code here */
//she waits her turn
if (semDown (semgid, sh->pass[id]) == -1)
{
perror ("error on the down operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
}
static void leaveTheBus (unsigned int k, unsigned int id)
{
/* enter critical region */
if (semDown (semgid, sh->access) == -1)
{
perror ("error on the down operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
/* insert your code here */
int i;
//if the bus is already empty
if(sh->fSt.bus.nOccup==0)
{
//she issues an error message
perror ("error, the bus is already empty");
exit (EXIT_FAILURE);
}
//she leaves the bust
for(i=0;i<T;i++)
{
if(sh->fSt.bus.seat[i] == id)
{
sh->fSt.bus.seat[i] = EMPTYST;
sh->fSt.bus.nOccup--;
break;
}
}
sh->nPassD++;
//if she is the last one to exit
if(sh->fSt.bus.nOccup==0){
if (semUp (semgid, sh->waitingPass) == -1)
{
perror ("error on the up operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
}
//change state
sh->fSt.st.passStat[k][id].stat = AT_THE_DEPARTURE_TRANSFER_TERMINAL;
saveState (nFic,k,&(sh->fSt));
/* exit critical region */
if (semUp (semgid, sh->access) == -1)
{
perror ("error on the up operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
}
static bool collectMaterials(unsigned int craftId) {
if (semDown(semgid, sh->access) == -1) { /* enter critical region */
perror("error on executing the down operation for semaphore access");
exit(EXIT_FAILURE);
}
bool materialsRequired; // return control variable if materials are needed
while (!sh->fSt.workShop.nPMatIn) {
sh->nCraftsmenBlk++;
if (semUp(semgid, sh->access) == -1) { /* exit critical region */
perror("error on executing the up operation for semaphore access");
exit(EXIT_FAILURE);
}
/* insert your code here */
if (semDown(semgid, sh->waitForMaterials) == -1) {
perror("collectMaterials() error during semDown waitformaterials");
exit(EXIT_FAILURE);
}
if (semDown(semgid, sh->access) == -1) { /* enter critical region */
perror("error on executing the down operation for semaphore access");
exit(EXIT_FAILURE);
}
}
/* insert your code here */
sh->fSt.workShop.nPMatIn -= PP; // collect the number of materials needed to produce an piece
saveState(nFic, &(sh->fSt));
materialsRequired = (sh->fSt.workShop.nPMatIn < PMIN); // check if the number of materials available are too low
if (semUp(semgid, sh->access) == -1) { /* exit critical region */
perror("error on executing the up operation for semaphore access");
exit(EXIT_FAILURE);
}
return materialsRequired;
}
static bool endOperCraftsman (unsigned int craftId)
{
bool stat; /* craftsman status */
unsigned int nOpCraft, /* number of craftsmen still operative */
i; /* counting variable */
if (semDown (semgid, sh->access) == -1) /* enter critical region */
{ perror ("error on executing the down operation for semaphore access");
exit (EXIT_FAILURE);
}
stat = (sh->fSt.workShop.NSPMat == NP); /* all the delivers of prime materials have been carried out */
if (stat)
{ nOpCraft = 0; /* find out how many customers are still operative */
for (i = 0; i < M; i++)
if (sh->fSt.st.craftStat[i].readyToWork) nOpCraft += 1;
stat = (sh->fSt.workShop.nPMatIn < nOpCraft*PP); /* the amount of prime materials still remaining
is less than the number of craftsmen still operative times the amount
of prime materials necessary to produce a piece */
if (stat)
sh->fSt.st.craftStat[craftId].readyToWork = false; /* the craftsman is signaled non operative from now on */
if (stat && (nOpCraft == 1)) /* check if the last craftsman is about to die */
{ sh->fSt.shop.prodTransfer = true; /* signal a batch of products is ready for transfer */
if (semUp (semgid, sh->proceed) == -1) /* and alert the entrepreneur */
{ perror ("error on executing the up operation for semaphore proceed");
exit (EXIT_FAILURE);
}
saveState (nFic, &(sh->fSt)); /* save present state in the log file */
}
}
if (semUp (semgid, sh->access) == -1) /* exit critical region */
{ perror ("error on executing the up operation for semaphore access");
exit (EXIT_FAILURE);
}
//stat = true; /* <--- remove this instruction for normal operation */
return stat;
}
static void batchReadyForTransfer (unsigned int craftId)
{
if (semDown (semgid, sh->access) == -1) /* enter critical region */
{ perror ("error on executing the down operation for semaphore access");
exit (EXIT_FAILURE);
}
sh->fSt.st.craftStat[craftId].stat = CONTACTING_THE_ENTREPRENEUR; // state change
sh->fSt.shop.prodTransfer = true; // ready for transfer
if(semUp(semgid,sh->proceed) == -1) {
perror("batchReadyForTransfer() error while semUp sh->proceed");
exit(EXIT_FAILURE);
}
saveState(nFic,&(sh->fSt));
if (semUp (semgid, sh->access) == -1) /* exit critical region */
{ perror ("error on executing the up operation for semaphore access");
exit (EXIT_FAILURE);
}
}
static void primeMaterialsNeeded (unsigned int craftId)
{
if (semDown (semgid, sh->access) == -1) /* enter critical region */
{ perror ("error on executing the down operation for semaphore access");
exit (EXIT_FAILURE);
}
/* insert your code here */
sh->fSt.st.craftStat[craftId].stat = CONTACTING_THE_ENTREPRENEUR; // state change
sh->fSt.shop.primeMatReq = true; // materials are needed
if(semUp(semgid,sh->proceed) == -1) {
perror("primeMaterialsNeeded() error during semUp() for proceed");
exit (EXIT_FAILURE);
}
saveState(nFic,&(sh->fSt));
if (semUp (semgid, sh->access) == -1) /* exit critical region */
{ perror ("error on executing the up operation for semaphore access");
exit (EXIT_FAILURE);
}
}
static void prepareToProduce (unsigned int craftId)
{
if (semDown (semgid, sh->access) == -1) /* enter critical region */
{ perror ("error on executing the down operation for semaphore access");
exit (EXIT_FAILURE);
}
/* insert your code here */
sh->fSt.st.craftStat[craftId].stat = PRODUCING_A_NEW_PIECE; // state change
saveState(nFic,&(sh->fSt));
if (semUp (semgid, sh->access) == -1) /* exit critical region */
{ perror ("error on executing the up operation for semaphore access");
exit (EXIT_FAILURE);
}
}
static void backToWork (unsigned int craftId)
{
if (semDown (semgid, sh->access) == -1) /* enter critical region */
{ perror ("error on executing the down operation for semaphore access");
exit (EXIT_FAILURE);
}
/* insert your code here */
sh->fSt.st.craftStat[craftId].stat = FETCHING_PRIME_MATERIALS; // change state
saveState(nFic,&(sh->fSt));
if (semUp (semgid, sh->access) == -1) /* exit critical region */
{ perror ("error on executing the up operation for semaphore access");
exit (EXIT_FAILURE);
}
}
static void reportMissingBags (unsigned int k, unsigned int id)
{
/* Enter Critical Region */
if (semDown (semgid, sh->access) == -1)
{
perror ("error on the down operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
/* insert your code here */
// Change State
sh->fSt.st.passStat[k][id].stat = AT_THE_BAGGAGE_RECLAIM_OFFICE;
saveState (nFic,k,&(sh->fSt));
/* Exit Critical Region */
if (semUp (semgid, sh->access) == -1)
{
perror ("error on the up operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
}
static unsigned int goToStore (unsigned int craftId)
{
if (semDown (semgid, sh->access) == -1) /* enter critical region */
{ perror ("error on executing the down operation for semaphore access");
exit (EXIT_FAILURE);
}
/* insert your code here */
int nProdIn; // variable return the correct value of materials
sh->fSt.st.craftStat[craftId].stat = STORING_IT_FOR_TRANSFER; // state change
sh->fSt.st.craftStat[craftId].prodPieces++; // one more unit produced by this craftsman
sh->fSt.workShop.nProdIn++; // one more unit ready to sell
sh->fSt.workShop.NTProd++; // one more unite produced globally
saveState(nFic,&(sh->fSt));
nProdIn = sh->fSt.workShop.nProdIn; // update return variable
if (semUp (semgid, sh->access) == -1) /* exit critical region */
{ perror ("error on executing the up operation for semaphore access");
exit (EXIT_FAILURE);
}
return nProdIn;
}
static unsigned int goCollectABag (unsigned int k, unsigned int id)
{
unsigned int retorno;
/* Enter Critical Region */
if (semDown (semgid, sh->access) == -1)
{
perror ("error on the down operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
if (sh->fSt.st.passStat[k][id].stat == AT_THE_DISEMBARKING_ZONE)
{
sh->fSt.st.passStat[k][id].stat = AT_THE_LUGGAGE_COLLECTION_POINT;
saveState (nFic,k,&(sh->fSt));
}
/* Exit Critical Region */
if (semUp (semgid, sh->access) == -1)
{
perror ("error on the up operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
/* insert your code here */
// The passenger waits until she receives a call from the porter.
if (semDown (semgid, sh->pass[id]) == -1)
{
perror ("error on the up operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
/* Enter Critical Region */
if (semDown (semgid, sh->access) == -1)
{
perror ("error on the down operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
/* insert your code here */
//If the belt is empty
if(camEmpty(&sh->fSt.convBelt))
{
//and the passenger doesnt have all her bags
if(sh->fSt.st.passStat[k][id].nBagsAct < sh->fSt.st.passStat[k][id].nBagsReal)
//she has missing bags
retorno = MB;
else
//otherwise she has no more bags to collect
retorno = YES;
}
else
{
//goCollectBag
//if there is a bag in the belt
if(camSearch(&sh->fSt.convBelt,id))
{
//she collects it
camOut(&sh->fSt.convBelt,id);
sh->fSt.st.passStat[k][id].nBagsAct++;
if(sh->fSt.st.passStat[k][id].nBagsAct < sh->fSt.st.passStat[k][id].nBagsReal)
//she has more bags to collect
retorno = NO;
else
//otherwise there are no more bags to collect
retorno = YES;
}
//if there isn't
else
{
//and she doesnt have all her bags
if(sh->fSt.st.passStat[k][id].nBagsAct < sh->fSt.st.passStat[k][id].nBagsReal)
//she has missing bags
retorno = MB;
else
//otherwise there are no more bags to collect
retorno = YES;
}
}
sh->nCalls[id]--;
saveState (nFic,k,&(sh->fSt));
/* Exit Critical Region */
if (semUp(semgid, sh->access) == -1)
{
perror ("error on the up operation for semaphore access (PA)");
exit (EXIT_FAILURE);
}
return retorno;
}