SynchronizedLock class

A reentrant async lock for critical section execution.

This class serializes access to an async FutureOr function by maintaining a queue. Reentrancy is supported within the same Zone.

Features:

• Queue-based task execution for synchronizedAsync
• Reentrancy (based on Dart zones) for both synchronized and synchronizedAsync

Example:

final lock = SynchronizedLock();

await lock.synchronizedAsync(() async {
  // Only one async block can execute here at a time
});

lock.synchronized(() {
  // Only one sync block can execute here at a time,
  // and it will not queue if another zone holds the lock.
});