////////////phase 4
void MsgSndISR(int msg_addr)
{
int msg_q_id;
int freed_pid;
msg_t *incoming_msg_ptr, *dst_msg_ptr;
incoming_msg_ptr = (msg_t *) msg_addr;
msg_q_id = incoming_msg_ptr->recipient;
incoming_msg_ptr->OS_clock = OS_clock;
incoming_msg_ptr->sender = running_pid;
if(msg_q[msg_q_id].wait_q.len == 0)
{
MsgEnQ(incoming_msg_ptr, &msg_q[msg_q_id]);
}
else
{
freed_pid = DeQ(&(msg_q[msg_q_id].wait_q));
EnQ(freed_pid, &ready_q);
pcb[freed_pid].state = READY;
dst_msg_ptr = (msg_t *) pcb[freed_pid].TF_ptr->eax;
*dst_msg_ptr = *incoming_msg_ptr;
}
}
void MsgSndISR()
{
int mid, pid;
msg_t *src, *dest;
mid = pcbs[cur_pid].tf_p->eax;
src = (msg_t *)pcbs[cur_pid].tf_p->ebx;
src->sender = cur_pid; // authenticate sender
src->time_stamp = sys_tick; // authenticate time_stamp
if(EmptyQ(&mboxes[mid].wait_q))
{
MsgEnQ( src, &( mboxes[mid].msg_q ) );
}
else
{
pid = DeQ(&mboxes[mid].wait_q);
pcbs[pid].state = READY;
EnQ(pid, &ready_q);
dest = (msg_t *)pcbs[pid].tf_p->eax; // eax since MsgRcv changed
*dest = *src;
}
}
void MsgSndISR(int mid, msg_t *p)
{
int pid;
p->sender = cur_pid;
p->send_tick = sys_tick;
if(EmptyQ(&(mboxes[mid].wait_q))) // If wait Queue of message is empty.
MsgEnQ(p, &(mboxes[mid].msg_q)); // Queue the message.
else
{
pid = DeQ(&(mboxes[mid].wait_q)); // Dequeue the waiting process
pcbs[pid].state = READY;
EnQ(pid, &ready_q);
*((msg_t *) pcbs[pid].tf_p->eax) = *p;
}
}
void MsgSndISR(int msg_addr) {
msg_t *incoming_msg_ptr, *destination;
int msg_q_id, freed_pid;
incoming_msg_ptr = (msg_t *)msg_addr;
msg_q_id = incoming_msg_ptr->recipient;
//authenticate send and os_clock of msg
incoming_msg_ptr->OS_clock = OS_clock;
incoming_msg_ptr->sender = running_pid;
if (msg_q[msg_q_id].wait_q.len <1) {
MsgEnQ(incoming_msg_ptr, &msg_q[msg_q_id]);
}else {
freed_pid = DeQ(&msg_q[msg_q_id].wait_q);
pcb[freed_pid].state= READY;
EnQ(freed_pid, &ready_q);
destination = (msg_t*)pcb[freed_pid].TF_ptr->eax;
*destination = *incoming_msg_ptr;
}
}
