int main (void){
init();
pcb* first_process;
first_process =(pcb*) rpq_dequeue();
current_process = first_process;
longjmp(first_process->jbdata,1);
return EXIT_SUCCESS;
}
void process_switch( )
{
int error_code;
//suspend 'current' process to release CPU
PCB *next_process; //hold pointer to the next process pcb
PCB *previous_process;
next_process = (PCB *) rpq_dequeue( ); //pointer points to the next highest priority ready process
previous_process = current_process; //Setting the current process as previous process
current_process = next_process; //Setting the current process PCB to the next process
if( current_process->process_id != 5 || previous_process->process_id != 5)
printf("process_switch: Context switch from %i to %i \n", previous_process->process_id, current_process->process_id);
fflush(stdout);
context_switch( previous_process->context, next_process->context ); //switch the context of 'previous' process to 'next' process
/*
if (current_process->process_state== EXECUTING) {
current_process->process_state = INTERRUPTED;
error_code = rpq_enqueue(current_process);
}
else if(current_process->process_state==BLOCKED_ON_ENVELOPE) {
error_code = blocked_on_resource_Q_enqueue(current_process);
}
current_process = next_process;// set 'current_process' to point to next's PCB*/
}
