How to use process pooling to create task?[Feature Request]

[liuzhuang1024]

Is your feature request related to a problem? Please describe.
How to use process pooling to create task? Not repeat create preocess or threads.

Describe the solution you'd like
pools.map(fn, data)

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered, any example in any other framework

Additional context
Add any other context or screenshots about the feature request here.