lock method

Future<void> lock(FutureOr<void> action())

Acquires the lock, then executes the callback function action, and then releases the lock.

Parameters:

• action: A callback function that will be executed after the lock is acquired.

Implementation

Future<void> lock(FutureOr<void> Function() action) async {
  await acquire();
  try {
    await action();
  } finally {
    await release();
  }
}