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**Objectives**

- Integration of Stackless's Technology into PyPy.

- Enable Massive Parallelism in a Single Thread

- Allow Pickling of a Running Program

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**Description of work**

- Determine which parts of Stackless need to be written in RPython.

- Design Stackless as a meta-component
  that hooks into the translator (WP31_)

- Implement Stackless partially in RPython, partially in Python,
  favoring the latter.
  
- Implement a dedicated run-time component (WP33_) for Stackless.

- Implement a single-threaded, pre-emptive scheduler with
  priorities. This is necessary to support small OSes, like WP53_.

- Further develop these technologies based on the results gathered in WP43_, 
  e.g. identify when these technologies would guide specific choices among the 
  solutions developed in WP33_ and studying several solutions in WP42_.

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**Deliverables**

- DL??? to be defined. Green threads, pickling.
- DL??? Passing all applicable elements of the standard test suite.

**Milestones and Expected Result**

- M3

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