/**
* @param pk a pointer to an array of c-strings
*/
void d_park(char pk[25][80]){
SEM_WAIT(parkMutex);
SEM_WAIT(sysMutex);
FILE *f;
if(printed++ < 100)
{f = fopen("pk.txt", "a+"); SWAP;}
else{
f = fopen("pk.txt", "w"); SWAP;
printed = 0;
}
int i; SWAP;
//clear screen
for(i=0; i<30; i++){
fprintf(f, "\n"); SWAP;
}
//draw park
fprintf(f, "\n"); SWAP;
for (i=0; i<25; i++)
fprintf(f, "\n%s", pk[i]); SWAP;
fprintf(f, "\n"); SWAP;
fclose(f); SWAP;
SEM_SIGNAL(sysMutex);
SEM_SIGNAL(parkMutex);
}
// ***********************************************************************
// ***********************************************************************
// group parent - create children
// argv[0] = group base name
// argv[1] = parent #
// argv[2] = # of children
//
int parentTask(int argc, char* argv[]) // group 1
{
int i, num_children;
char buffer[32];
int parent = atoi(argv[1]);
num_children = atoi(argv[2]);
for (i = 'a'; i < 'a' + num_children; i++)
{
sprintf(buffer, "%s%d%c", "child_", atoi(argv[1]), i);
createTask(buffer, // task name
childTask, // task
MED_PRIORITY, // priority
3, // task argc
argv); // task argument pointers
SEM_WAIT(childALive); // wait until child is going
}
SEM_SIGNAL(parentDead); // parent dies
// while (1) SWAP; // keep parent alive
while (1)
{
++group_count[parent - 1];
SWAP;
}
return 0;
} // end parentTask
// ***********************************************************************
// ***********************************************************************
// signal command
void sem_signal(Semaphore* sem) // signal
{
if (sem)
{
printf("\nSignal %s", sem->name);
SEM_SIGNAL(sem);
}
else my_printf("\nSemaphore not defined!");
return;
} // end sem_signal
int carTask(int argc, char* argv[])
{
int carIndex = atoi(argv[1]);
int driverIndex;
while(1){
int i = 0;
while(i < 3){
SEM_WAIT(fillSeat[carIndex]); SWAP;
SEM_SIGNAL(passengerRide); SWAP;//save passenger rideFinished[] semaphore
SEM_WAIT(passengerJumpIntoRide); SWAP
SEM_WAIT(parkMutex); SWAP
myPark.numInCarLine--; SWAP
myPark.numInCars++; SWAP
myPark.numTicketsAvailable++; SWAP
SEM_SIGNAL(parkMutex); SWAP
SEM_SIGNAL(theTickets); SWAP
if(i > 1){
currCar = carIndex+1; SWAP
SEM_SIGNAL(noDriverYet); SWAP
SEM_SIGNAL(helloDriverWakeUp); SWAP
SEM_WAIT(ready2GoDriver); SWAP
driverIndex = currDriver; SWAP
}
SEM_SIGNAL(seatFilled[carIndex]); SWAP;
i++;
}
SEM_WAIT(rideOver[carIndex]); SWAP;
int j = 0;
while(j < 3){
SEM_WAIT(parkMutex); SWAP
myPark.numInCars--; SWAP
myPark.numInGiftLine++; SWAP
SEM_SIGNAL(parkMutex); SWAP
SEM_SIGNAL(rideFinished); SWAP
j++;
}
SEM_SIGNAL(driverFinished[driverIndex]); SWAP
}
// ***********************************************************************
// ***********************************************************************
// child task
// argv[0] = group base name
// argv[1] = parent #
// argv[2] = # of siblings
//
int childTask(int argc, char* argv[]) // child Task
{
int parent = atoi(argv[1]);
if ((parent<1) || (parent>NUM_PARENTS))
{
printf("\n**Parent Error! Task %d, Parent %d", curTask, parent);
return 0; // die!!
}
SEM_SIGNAL(childALive); // child is alive!!
// count # of times scheduled
while (1)
{
group_count[parent-1]++;
SWAP;
}
return 0;
} // end childTask
int tickDeltaClock() {
int i;
// Is it time to signal any semaphores?
if(deltaClockSize && deltaClockTicker-- < 0 && --(dc[0].time) <= 0) {
// For every entry that just expired, signal semaphore
while(deltaClockSize > 0 && dc[0].time <= 0) {
//printf("Signaling %s\n", dc[0].sem->name);
SEM_SIGNAL(dc[0].sem);
// shift everything down
for(i=0; i<deltaClockSize-1; i++) {
dc[i] = dc[i+1];
}
deltaClockSize--;
}
deltaClockTicker = 10;
}
}
int P2_signal2(int argc, char* argv[]) // signal2
{
SEM_SIGNAL(s2Sem);
return 0;
} // end signal
// ***********************************************************************
int P2_signal1(int argc, char* argv[]) // signal1
{
SEM_SIGNAL(s1Sem);
return 0;
} // end signal