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Fix GCShadow for regions #77011

Merged
merged 2 commits into from
Oct 21, 2022
Merged

Fix GCShadow for regions #77011

merged 2 commits into from
Oct 21, 2022

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cshung
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@cshung cshung commented Oct 13, 2022

This change enables HEAPVERIFY=2 for regions.

The reason why HEAPVERIFY=2 didn't work for regions is that we were trying to virtual_commit the full reserved range, but it usually won't work under USE_REGIONS because by default it is 256G large. Instead, the change reserves the full reserved range, and then incrementally commits as the heap grows.

The commits are intentionally bypassing the hard limit check.

@cshung cshung self-assigned this Oct 13, 2022
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ghost commented Oct 13, 2022

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Issue Details

This change enables HEAPVERIFY=2 for regions.

The reason why HEAPVERIFY=2 didn't work for regions is that we were trying to virtual_commit the full reserved range, but it usually won't work under USE_REGIONS because by default it is 256G large. Instead, the change reserves the full reserved range, and then incrementally commits as the heap grows.

The commits are intentionally bypassing the hard limit check.

Author: cshung
Assignees: cshung
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area-GC-coreclr

Milestone: -

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@Maoni0 Maoni0 left a comment

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other than what we talked about about moving where we are calling initGCShadow, it LGTM

@cshung cshung merged commit 50f7ab6 into dotnet:main Oct 21, 2022
@cshung cshung deleted the public/shadow-for-region branch October 21, 2022 07:26
@ghost ghost locked as resolved and limited conversation to collaborators Nov 20, 2022
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2 participants