int run(void) {
int operands[] = { 342, 74, 283, 37, 534 };
int sz = sizeof(operands) / sizeof(int);
const char *name = get_instance_name();
printf("%s: what's the answer to ", name);
for (int i = 0; i < sz; i++) {
printf("%d ", operands[i]);
if (i != sz - 1) {
printf("+ ");
}
}
printf("?\n");
struct payload *p = (void*)d + 1024;
p->sz = sz;
for (int i = 0; i < sz; i++) {
p->operands[i] = operands[i];
}
dataport_ptr_t ptr = a_calculate(dataport_wrap_ptr((void*)p));
p = dataport_unwrap_ptr(ptr);
printf("%s: result was %d\n", name, p->result);
return 0;
}
/* this callback handler is meant to be invoked the second time an event
* arrives on the echo event interface.
* Note: the callback handler must be explicitly registered before the
* callback will be invoked.
* Also the registration is one-shot only, if it wants to be invoked
* when a new event arrives then it must re-register itself. Or it can
* also register a different handler. */
void callback_handler_echo_2(void *a) {
/* TODO: read some data from the dataports. specifically:
* read a dataport pointer from one dataport, then use that pointer to
* access data in another dataport. */
for (int i = 0; i < ptrs->n; i++) {
char *str = (char *) dataport_unwrap_ptr(ptrs->ptr[i]);
printf("Echo server received: %s\n", str);
}
/* TODO: register the original callback handler for this event */
data_ready_reg_callback(&callback_handler_echo, NULL);
/* TODO: notify the client that we are done reading the data */
reply_ready_emit();
}