Infinite recursion

[mikeaustin]

So Kopi recursion is not limited by the stack, since everything is asynchronous and chained by promises, but it can eat up the JavaScript heap, I think simply by holding on to previous function closures. There may be a way to invalidate no longer used environments, or maybe provide a native self binding that when called loops instead of recurses, just like TCO.

Currently, there is a loop function that takes a function and applies until the exit function is called (first curried argument). If I add a process.gc() and a sleep 1 in the loop, it seems to keep memory at a constant value, which is good. I'm not sure if this method is 100% foolproof, though:

while (!done) {
  value = await func.apply(undefined, [value, scope, visitors]);

  if (++index % 1000 === 0) {
    global.gc();
    await kopi_sleep(0);
  }
}