int terminate()
{
int retCode = 0;
atomic(ON);
retCode = k_terminate();
atomic(OFF);
return retCode;
}
void k_process_init(int num_processes, proc_cfg_t init_table[])
{
jmp_buf init_buf;
int i;
_num_processes = num_processes;
ready_pq = proc_pq_create(NUM_PRIORITIES+NULL_PRIORITY);
//initalize all the data for the pcb
for (i = 0; i < num_processes; i++)
{
pcb_t *pcb = &p_table[i];
proc_cfg_t *cfg = &init_table[i];
pcb->pid = cfg->pid;
pcb->priority = cfg->priority;
pcb->name = cfg->name;
pcb->is_i_process = cfg->is_i_process;
pcb->start = cfg->start;
pcb->recv_msgs = msg_env_queue_create();
pcb->next = NULL;
pcb->status = P_READY;
pcb->stack_end = malloc(STACK_SIZE);
pcb->atomic_count = pcb->is_i_process ? 0 : 1;
// If the process is not an i process place it on the ready queue
if (!pcb->is_i_process)
{
assert(proc_pq_enqueue(ready_pq, pcb) == CODE_SUCCESS);
}
// Initialize the stack and start pc
if (setjmp(init_buf) == 0)
{
char * stack_top = pcb->stack_end + STACK_SIZE - STACK_OFFSET;
__asm__("movl %0, %%esp":"=g" (stack_top));
if (setjmp(pcb->context) == 0)
{
longjmp(init_buf, 1);
}
else
{
if (!current_process->is_i_process)
atomic(OFF);
current_process->start();
#ifdef DEBUG_KERN
printf("FATAL ERROR: Process <%s> stopped executing! \n",
current_process->name);
#endif
k_terminate();
}
}
}
