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Ensure GCHeap related debugging still works even when we use newer CLRGC to target older runtimes #88457

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merged 4 commits into from
Jul 13, 2023
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Ensure GCHeap related debugging still works even when we use newer CLRGC to target older runtimes #88457

merged 4 commits into from
Jul 13, 2023
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cshung
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@cshung cshung commented Jul 6, 2023

This change makes sure GCHeap-related debugging still works even when we use newer CLRGC to target older runtimes by:

  • Placing all the newer fields at the end of GcDacVars and dac_gcheap, and
  • Making sure GC never populate fields that do not exist on older versions.

@cshung cshung requested a review from leculver July 6, 2023 03:14
@cshung cshung self-assigned this Jul 6, 2023
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ghost commented Jul 6, 2023

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Issue Details

This change makes sure GCHeap-related debugging still works even when we use newer CLRGC to target older runtimes by:

  • Placing all the newer fields at the end of GcDacVars and dac_gcheap, and
  • Making sure GC never populate fields that do not exist on older versions.
Author: cshung
Assignees: cshung
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area-Diagnostics-coreclr
Milestone: -

@cshung cshung marked this pull request as draft July 6, 2023 03:14
@cshung cshung marked this pull request as ready for review July 10, 2023 19:14
@cshung cshung requested review from noahfalk and removed request for leculver July 10, 2023 19:15
noahfalk
noahfalk approved these changes Jul 11, 2023
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A few suggestions inline but LGTM.

fyi @dotnet/dotnet-diag

src/coreclr/gc/dac_gcheap_fields.h Outdated Show resolved Hide resolved
src/coreclr/gc/gcinterface.dacvars.def Outdated Show resolved Hide resolved
src/coreclr/gc/dac_gcheap_fields.h Outdated Show resolved Hide resolved
src/coreclr/gc/gcinterface.dacvars.def Show resolved Hide resolved
This was referenced Jul 11, 2023
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@mikem8361
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Is this going to be merged? It would be nice if .NET 8 doesn't have this problem going forward.

Maoni0
Maoni0 approved these changes Jul 13, 2023
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:shipit:

This was referenced Jul 13, 2023
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@cshung cshung merged commit 4ee9eef into dotnet:main Jul 13, 2023
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@cshung cshung deleted the public/fix-debug branch July 13, 2023 23:03
@cshung cshung mentioned this pull request Aug 4, 2023
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@noahfalk noahfalk noahfalk approved these changes

@Maoni0 Maoni0 Maoni0 approved these changes

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@cshung @mikem8361 @noahfalk @Maoni0