SchedulerHost class abstract

Platform host interface providing cooperative macrotask yielding and scheduling.

In pure-Dart VM and SSR environments, DefaultSchedulerHost uses zero-duration Timer macrotasks to yield execution without depending on browser APIs.

In browser DOM applications, a custom host (such as one using window.requestAnimationFrame, window.requestIdleCallback, or MessageChannel) can be installed via BloomScheduler.setHost.

class CustomSchedulerHost implements SchedulerHost {
  @override
  bool get isSynchronous => false;

  @override
  void scheduleWork(void Function() runQueue) {
    Timer.run(runQueue);
  }

  @override
  Future<void> yieldToHost() {
    final completer = Completer<void>();
    Timer(Duration.zero, completer.complete);
    return completer.future;
  }
}

Constructors

SchedulerHost()

Properties

hashCode → int
The hash code for this object.
no setterinherited
isSynchronous → bool
Whether this host executes synchronously without deferral or time-slicing (e.g. in fast SSR).
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
scheduleWork(void runQueue()) → void
Requests the host environment to invoke runQueue in the next event loop turn.
toString() → String
A string representation of this object.
inherited
yieldToHost() → Future<void>
Yields execution to the host event loop, completing when the platform is ready to resume.

Operators

operator ==(Object other) → bool
The equality operator.
inherited