// Print a complete description of the
// process referenced in each element (node)
// of the queue.
// The complete description includes id, service time,
// interarrival time, arrival time, time at which
// service begins, and time at which service is completed.
void printProcessesInQueue( QueuePointer qp ) {
NodePointer np = qp->pointerToHead;
while( np != NULL ) {
printProcess( np->processPointer );
np = np->pointerToPrevNode;
} // while
} // printProcessInQueue( QueuePointer )
// print the contents of the array that
// holds the elements of the priority queue
// (this function is to help in debugging)
void printPriorityQueue( PriorityQueuePointer pq ) {
int i;
for( i = 1; i <= pq->size; i++ ) {
printf( "%4d ", i );
printProcess(pq->data[i]);
printf( "\n" );
} // for
printf( "\n" );
} // printPriorityQueue( PriorityQueuePointer )
/*
* Launch the kernel, i.e. launch first process in the running list
*/
void startKernel(void)
{
LOG("Gonna start the kernel, remind all processes :\n");
int i = 0;
int max = runningList.size;
for( ; i < max ; i++)
{
struct processDescriptor* p =
(struct processDescriptor*) getIndex(&runningList, i)->element;
printProcess(p);
}
struct processDescriptor* process =
(struct processDescriptor*) getIndex(&runningList, 0)->element;
LOG("Starting process : ");
LOG_INT(process->pid);
LOG_CONT("\n");
/* LOG_INT(process->ppid); */
printProcess(process);
LOG_CONT("\n");
startProcess(&(process->processState));
}
void
viewProcessDump(void){
int pid;
int i,
niceval[4] = {19, 10, 0, -12};
for(i = 0; i < 4; i++){
if((pid = fork()) < 0){// Error
printf(1, "Error forking!\n");
}
else if(pid == 0){ //Child
nice(niceval[i]);
printf(2, "-----Before Child %d-----\n", niceval[i]);
printProcess();
int j;
for(j=0; j < 50; j++)
;
printf(2, "-----After Child %d------\n", niceval[i]);
printProcess();
exit();
}
}
while(wait() >= 0)
;
printf(2, "\n\n");
}
/* create new process and returns the cell containing the process */
struct cell * createProcess(void (*f)(void), void* baseAddress)
{
void* area = get2M();
LOG("Creating process at base address : ");
LOG_INT((int)area);
LOG_CONT("\n");
/* Prepare initial processState*/
struct processDescriptor * process =
kalloc(sizeof(struct processDescriptor));
process->processState.pc = f;
process->processState.sp = area + 2*SPACE - 4;
/* When exiting, auto-delete process */
process->processState.lr = &deleteProcess;
process->ppid = choosePPID();
pidCounter++;
process->pid = pidCounter;
process->map.baseAddress = area;
process->baseAddress = baseAddress;
printProcess(process);
insertAtEnd(&stoppedList, process);
return getIndex(&stoppedList, 0)->previous;
}