//----------------------------------------------------------------------
//
// ProcessDestroy
//
// Destroy a process by setting its status to zombie and putting it
// on the zombie queue. The next time the scheduler is called, this
// process will be marked as free. We can't necessarily do it now
// because we might be the currently running process.
//
// NOTE: This must only be called from an interrupt or trap. However,
// it need not be followed immediately by a ProcessSchedule() because
// the process can continue running.
//
//----------------------------------------------------------------------
void
ProcessDestroy (PCB *pcb)
{
dbprintf('p', "Entering ProcessDestroy for 0x%x.\n", pcb);
ProcessSetStatus (pcb, PROCESS_STATUS_ZOMBIE);
QueueRemove (&pcb->l);
QueueInsertFirst (&zombieQueue, &pcb->l);
dbprintf('p', "Leaving ProcessDestroy for 0x%x.\n", pcb);
}
//----------------------------------------------------------------------
//
// ProcessModuleInit
//
// Initialize the process module. This involves initializing all
// of the process control blocks to appropriate values (ie, free
// and available). We also need to initialize all of the queues.
//
//----------------------------------------------------------------------
void
ProcessModuleInit ()
{
int i;
dbprintf ('p', "Entering ProcessModuleInit\n");
QueueInit (&freepcbs);
QueueInit (&runQueue);
QueueInit (&waitQueue);
QueueInit (&zombieQueue);
for (i = 0; i < PROCESS_MAX_PROCS; i++) {
dbprintf ('p', "Initializing PCB %d @ 0x%x.\n", i, &(pcbs[i]));
pcbs[i].flags = PROCESS_STATUS_FREE;
QueueLinkInit (&(pcbs[i].l), (void *)&pcbs[i]);
QueueInsertFirst(&freepcbs, &(pcbs[i].l));
}
currentPCB = NULL;
dbprintf ('p', "Leaving ProcessModuleInit\n");
}
