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17 lines
537 B
Dart
17 lines
537 B
Dart
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import 'dart:async';
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/// Async mutex to guarantee actions are performed sequentially and do not interleave
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class AsyncMutex {
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Future _running = Future.value(null);
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/// Execute [operation] exclusively, after any currently running operations.
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/// Returns a [Future] with the result of the [operation].
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Future<T> run<T>(Future<T> Function() operation) {
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final completer = Completer<T>();
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_running.whenComplete(() {
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completer.complete(Future<T>.sync(operation));
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});
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return _running = completer.future;
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}
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}
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