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ChunkMap is broken when using multiple spaces that access it #1197

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k-sareen opened this issue Sep 9, 2024 · 1 comment
Open

ChunkMap is broken when using multiple spaces that access it #1197

k-sareen opened this issue Sep 9, 2024 · 1 comment

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@k-sareen
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k-sareen commented Sep 9, 2024

tl;dr ChunkMap encodes global state (whether a chunk has been allocated or not) but is used as if it's a local metadata which can cause issues when using multiple spaces that access it such as ImmixSpace and MarkSweepSpace.

For more context see here: https://mmtk.zulipchat.com/#narrow/stream/262673-mmtk-core/topic/.60ChunkMap.60.20with.20ImmixSpace.20and.20MarkSweepSpace
@k-sareen
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See k-sareen@9ae4936 for my (ugly) solution to this.

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