protect<T> static method

Future<T> protect<T>(
  1. Future<T> callback(), {
  2. bool exclusive = true,
  3. String tag = 'mutex',
})

Guarantees the callback is invoked synchronously, only by single tab or code block at the same time.

Implementation

static Future<T> protect<T>(
  Future<T> Function() callback, {
  bool exclusive = true,
  String tag = 'mutex',
}) {
  Mutex? mutex = _guards[tag];
  if (mutex == null) {
    mutex = Mutex();
    _guards[tag] = mutex;
  }

  return mutex.protect(callback);
}