func _run_cooperative(consume root_task: Task) -> ()Runs one scheduler root and its complete spawned task tree on this worker.
root_task is a role within this scheduler scope, not necessarily the program's main task. Ready tasks advance cooperatively; when all tasks wait, every channel or timer interest is registered before the worker parks to avoid lost wakes.
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pub func _run_cooperative(consume root_task: Task) -> () {
match _drive_task(task: root_task) {
.finished -> (),
first -> _drain_cooperative(first: first)
}
}