enum abstract ThreadMode(Bool)

All work will be done on a background thread.

Unlike single-threaded mode, there is no risk of causing lag spikes. Even so, doWork should return periodically, to allow canceling the thread. If not canceled, doWork will be called again immediately.

In HTML5, web workers will be used to achieve this. This means doWork must be a static function, and you can't use bind(). Web workers also impose a longer delay each time doWork returns, so it shouldn't return as often in multi-threaded mode as in single-threaded mode.

All work will be done on the main thread, during Application.onUpdate.

To avoid lag spikes, doWork should return after completing a fraction of a frame's worth of work, storing its progress in state. It will be called again with the same state next frame, or this frame if there's still time.

See also:

• https://en.wikipedia.org/wiki/Green_threads

• https://en.wikipedia.org/wiki/Cooperative_multitasking