//------------------------------------------------------------------------------
// Function: PollInterrupt
// Description: Poll for HDMI interrupt.
// This can be polling the interrupt pin on the processor,
// or polling the register over I2C.
//------------------------------------------------------------------------------
void PollInterrupt(void)
{
if (INTERRUPT_PENDING)
InterruptHandler();
}
//CPU Thread Function
void *CPURun(void *args)
{
//put the first PCB as running
if (aCPU->runningPCB == NULL)
{
aCPU->runningPCB = dequeue(ReadyQPtr);
aCPU->runningPCB->state = 0;
}
//1 for interrupt has occurred, 0 for interrupt did not occur
int interruptOccurred = (IO1INT || IO2INT || KBINT || TIMERINT);
while(aCPU->count > 0)
{
//PRINT OUT OF CURRENT SETTINGS
sleep(1);
printf("\n\n\n\n\n\n\n\n");
printf("P%d - running", aCPU->runningPCB->pid);
if (aCPU->IO1->owner != NULL) printf("\nI/O1 - P%d", aCPU->IO1->owner->pid);
if (aCPU->IO2->owner != NULL) printf("\nI/O2 - P%d", aCPU->IO2->owner->pid);
if (aCPU->IoQueue->count > 0)
{
printf("\nI/O Waiting - ");
printQueue(aCPU->IoQueue);
}
int m;
for(m = 0; m < pcproc_count; m++)
{
if (mutex[m]->owner != NULL) printf("\nM%d - P%d owns", m, mutex[m]->owner->pid);
}
for(m = 0; m < pcproc_count * 2; m++)
{
if (condVar[m] != NULL )
{
if (condVar[m]->pcbQueue->count > 0)
{
printf("\nCV%d - ", m);
printQueue(condVar[m]->pcbQueue);
}
}
}
//Keyboard
//printf();
printf("\n-------------------------");
if(interruptOccurred == 0)
{
if(aCPU->runningPCB->curr_count > WAIT_TIME)
{
runForCount = WAIT_TIME;
}
}
else
{
runForCount = aCPU->runningPCB->curr_count;
}
runForCount = rand() % 7;
while(runForCount > 0)
{
runForCount--;
aCPU->runningPCB->curr_count++;
if (aCPU->runningPCB->curr_count == WAIT_TIME) TIMERINT = 1;
interruptOccurred = (IO1INT || IO2INT || KBINT || TIMERINT);
if (interruptOccurred)
{
if(TIMERINT)
{
InterruptHandler( 7, aCPU->runningPCB);
runForCount = 0;
}
if(IO1INT) InterruptHandler( 3, aCPU->IO1->owner);
if(IO2INT) InterruptHandler( 4, aCPU->IO2->owner);
if(KBINT) InterruptHandler( 5, aCPU->Keyboard->owner);
}
int processType = aCPU->runningPCB->process->proc_type;
if ((processType == 0) && (runForCount != 0))
{
if (runForCount == 1)
{
TIMERINT = 1;
}
}
else if ((processType == 1) && (runForCount != 0))
{
int i;
for(i = 0; i < aCPU->runningPCB->process->no_requests; i++)
{
if ( (rand() % 10) == (rand() % 10) )
{
aCPU->runningPCB->state = 2;
aCPU->runningPCB->curr_count = runForCount;
runForCount = 0;
InterruptHandler( 1, aCPU->runningPCB);
}
else if ( runForCount == 1 )
{
TIMERINT = 1;
}
}
}
else if ((processType == 2) && (runForCount != 0))
{
InterruptHandler( 2, aCPU->runningPCB);
runForCount = 0;
}
else if ((processType == 3) || (processType == 4) && (runForCount != 0))
{
if(processType == 3)
{
pthread_create(&aCPU->producer_thread[aCPU->runningPCB->sharedMemInd], NULL, incCount, (void *) aCPU->runningPCB);
}
else if (processType == 4)
{
pthread_create(&aCPU->consumer_thread[aCPU->runningPCB->sharedMemInd], NULL, resetCount, (void *) aCPU->runningPCB);
}
aCPU->runningPCB->state = 1;
printf("\nP%d returned to ready queue", aCPU->runningPCB->pid);
enqueue(ReadyQPtr, aCPU->runningPCB);
aCPU->runningPCB = dequeue(ReadyQPtr);
printf("\nP%d selected from ready queue", aCPU->runningPCB->pid);
runForCount = 0;
}
aCPU->count--;
if (aCPU->count == 0)
{
cpuRunning = 0;
KBDevDestructor(aCPU->Keyboard);
pthread_exit(NULL);
}
}
}
}
