thread_safe_function_round_trip please help

[翎栋]

hi , there is code not understand

bindings.startThread(item => {
  const thePrime = item.prime;
  console.log('The prime: ' + thePrime);

  // Answer the call with a 90% probability of returning true somewhere between
  // 200 and 400 ms from now.
  setTimeout(() => {
    const theAnswer = (Math.random() > 0.1);
    console.log(thePrime + ': answering with ' + theAnswer);
    bindings.registerReturnValue(item, theAnswer);
    if (!theAnswer) {
      bindings = null;
    }
  }, Math.random() * 200 + 200);
});

could anyone explain that why call registerReturnValue after 200ms~400ms

[Gabriel Schulhof]

@OrangeBook the reason for the delay is only for illustration. The idea is that the return values arrive in an unpredictable order.

[翎栋]

ok ,but the example will be abort at CallJs function last statement when delete setTimeout fucntion.Here is Doubt .

[翎栋]

try again , that fine.