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Remove NULL ObjectReference #146

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Merged
merged 3 commits into from
Apr 27, 2024
Merged

Remove NULL ObjectReference #146

merged 3 commits into from
Apr 27, 2024

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@wks wks commented Apr 24, 2024

Parent PR: mmtk/mmtk-core#1064

@wks wks marked this pull request as ready for review April 24, 2024 16:50
@wks wks requested a review from qinsoon April 24, 2024 16:50
@wks wks mentioned this pull request Apr 24, 2024
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wks commented Apr 24, 2024

I managed to get the tests passing.

I made an assumption that a SimpleEdge may hold a NULL pointer. It is strange because AFAIK Julia uses nothing and missing to represent non-existing values. But when I tried to build Julia, I did observe some SimpleEdge holding NULL pointer. Currently, I just let JuliaVMEdge::load() return None if it is a SimpleEdge and the slot holds the value 0. MMTk core can gracefully skip such edges.

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qinsoon approved these changes Apr 26, 2024
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LGTM

@mmtkgc-bot mmtkgc-bot enabled auto-merge (squash) April 27, 2024 14:32
@mmtkgc-bot mmtkgc-bot merged commit 309a6ae into mmtk:master Apr 27, 2024
@qinsoon qinsoon mentioned this pull request May 22, 2024
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qinsoon pushed a commit to qinsoon/mmtk-julia that referenced this pull request May 22, 2024
@wks @mmtkgc-bot @qinsoon
Remove NULL ObjectReference (mmtk#146)
54b8e44 
Parent PR: mmtk/mmtk-core#1064

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Co-authored-by: mmtkgc-bot <mmtkgc.bot@gmail.com>
@qinsoon qinsoon mentioned this pull request May 22, 2024
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qinsoon added a commit that referenced this pull request Jun 17, 2024
@qinsoon @wks @mmtkgc-bot
Backport #146 #148 #150 (#152)
cab4348 
Backport #146, #148, #150

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Co-authored-by: Kunshan Wang <wks1986@gmail.com>
Co-authored-by: mmtkgc-bot <mmtkgc.bot@gmail.com>
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