static void disp_act(PD *p)
{
/* process is ready, */
/* so put him on RLR */
p->p_stat &= ~WAITIN;
insert_process(p, &rlr);
}
/* Function reads input data from a file, saves data as a process,
and returns the queue with all proceses waiting to be loaded into memory */
process_t *read_processes(char *file, process_t *queue)
{
int process_num;
int process_size;
int first_read = 1;
FILE *fp;
char line[MAXLINE];
/* Open file for reading, check if file is empty */
if( (fp=fopen(file,"r")) ==NULL)
{
printf("Error file %s is empty.\n", file);
exit(1);
}
/* Read from file */
while(fgets(line, sizeof(line), fp))
{
sscanf(line, "%d %d", &process_num, &process_size);
if(DEBUGLINE)
printf("Line Read: PID - %d, MEMORY - %d \n", process_num, process_size);
if(first_read)
{
/* If its the first line, put data at start of queue */
insert_process(queue, process_num, process_size, 0, 0, 0);
first_read = 0;
continue;
}
/* Allocate memory for new process and push onto the queue */
process_t *process_read = safe_malloc(sizeof(process_t));
insert_process(process_read, process_num, process_size, 0, 0, 0);
push(queue, process_read);
}
return queue;
}
process * parse( char *line)
{
//puts(line);
process * head=NULL;
while(*line != '\0')
line= insert_process(&head, line);
display_process(head);
return head;
}
void unblock_single_waiting_process(){
pcb * temp;
int i;
for(i=0; i<4; i++){
temp = bmem_queue[i];
if(temp == NULL) continue;
while(temp->next_process != NULL){
temp = temp->next_process;
}
insert_process(remove_blocked_process(temp,BLOCKED_MEM_STATE), temp->process_priority);
}
return;
}
/* Removes the next process from the list and returns it */
process_t* pop(process_t **queue)
{
process_t *start_process = safe_malloc(sizeof(process_t));
process_t *next_node = NULL;
/* Update pointers so the start of the queue points to correct position */
next_node = (*queue)->next;
insert_process(start_process, (*queue)->PID, (*queue)->size, (*queue)->run_time,
(*queue)->index_flag, 0);
free(*queue);
*queue = next_node;
return start_process;
}