/**
* Handles a request for a task.
*
*/
int handle(Task *task, Request *req) {
// Handle Interrupts.
if (req == 0) {
int data;
int event = process_interrupt(&data);
kevent(event, data);
make_ready(task);
return 0;
}
// Handle System Calls.
switch (req->request) {
case MY_TID:
kmytid(task);
break;
case CREATE:
kcreate(task, (int)req->args[0] /* priority */, req->args[1] /* code */, (int)req->args[2] /* args */);
break;
case MY_PARENT_TID:
kmy_parent_tid(task);
break;
case PASS:
make_ready(task);
break;
case EXIT:
kexit(task);
break;
case SEND:
ksend(task, (int)req->args[0], (char *)req->args[1], (int)req->args[2], (char *)req->args[3], (int)req->args[4]);
break;
case RECEIVE:
krecieve(task, (int *)req->args[0], (char *)req->args[1], (int)req->args[2]);
break;
case REPLY:
kreply(task, (int)req->args[0], (char *)req->args[1], (int)req->args[2]);
break;
case AWAIT_EVENT:
kawait(task, (int)req->args[0]);
break;
case WAIT_TID:
kwait_tid(task, (int)req->args[0]);
break;
case SHUTDOWN:
return -1;
default:
bwprintf(COM2, "Undefined request number %u\n", req->request);
break;
}
return 0;
}
static inline void irq_select(void)
{
if (SillyG) {
int irq_bits = vm86_plus(VM86_GET_IRQ_BITS, 0);
if (irq_bits) {
SillyG_t *sg=SillyG;
while (sg->fd) {
if (irq_bits & (1 << sg->irq)) {
if (process_interrupt(sg)) {
vm86_plus(VM86_GET_AND_RESET_IRQ,sg->irq);
h_printf("SIG: We have an interrupt\n");
}
}
sg++;
}
}
}
}