gleam-lang/gleam

Use memory arena for pretty printing algebra

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#2,251 opened on Jun 29, 2023

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help wanted

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Description

The pretty printing algebra data structure is represented using a recursive type that is reference counted. Create a new version of this that uses a memory arena (likely a reference based one) and benchmark it to see if there is a notable performance improvement.

If this is determined as being significantly faster, we can convert the formatter and code generators over to use this new version. This would be quite a long manual job.

Contributor guide

Research direction
Study the current pretty printing algebra implementation, understand the recursive reference counted data structure. Design a new version using a memory arena (e.g., typed arena or bumpalo). Implement a prototype and benchmark against the existing version to measure performance gains.
Tech stack
rust
Domain
compilersperformance
Issue type
Refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Rustmemory arenasbenchmarking
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20