Implement cDAC memory region APIs (GetHandleTableMemoryRegions, GetGCBookkeepingMemoryRegions, GetGCFreeRegions) by Copilot · Pull Request #124926 · dotnet/runtime

Copilot · 2026-02-26T22:09:17Z

Implements three ISOSDacInterface13 APIs natively in the cDAC by extending the IGC contract: GetHandleTableMemoryRegions, GetGCBookkeepingMemoryRegions, and GetGCFreeRegions. These APIs previously delegated to legacy DAC or returned E_NOTIMPL.

Description

SOSMemoryEnum

Added SOSMemoryEnum implementation following the SOSHandleEnum pattern, with built-in #if DEBUG validation against the legacy DAC enum (validates Start, Size, ExtraData, Heap fields on Next(), Skip(), Reset(), and GetCount())

IGC Contract Extensions

Extended IGC contract with three new memory region enumeration methods
Safety caps as named constants matching native DAC: MaxHandleTableRegions (8192), MaxBookkeepingRegions (32), MaxSegmentListIterations (2048)
GetGCFreeRegions uses TryReadGlobal for CountFreeRegionKinds to gracefully handle non-regions GC builds
Added null guard for heap.FreeRegions value in server GC path
Bookkeeping loop includes underflow guard (next > cardTableInfoSize) matching native DAC daccess.cpp:8313

Data Types & Descriptors

Added CardTableInfo and RegionFreeList data classes
Extended GCHeap type descriptors with optional fields (FreeableSohSegment, FreeableUohSegment, FreeRegions) conditional on GC build configuration (BACKGROUND_GC, USE_REGIONS)
Native datadescriptor changes for new globals and types

Documentation & Tests

Updated docs/design/datacontracts/GC.md with new API types, data descriptors, globals, constants, and pseudocode
Added comprehensive unit tests (GCMemoryRegionTests.cs) covering single/multiple segments, empty buckets, linked segments, bookkeeping entries, and free regions
Added dump tests in ServerGCDumpTests.cs and WorkstationGCDumpTests.cs

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… for memory region types Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

…p free region fields, and IGC contract methods Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

…Impl integration Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

Add GCMemoryRegionTests with three test methods covering: - GetHandleTableMemoryRegions: single map, bucket, and segment - GetGCBookkeepingMemoryRegions: single card table entry - GetGCFreeRegions: workstation GC with one free region All tests use [Theory] with [ClassData(typeof(MockTarget.StdArch))] to run across all four architecture combinations. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

max-charlamb · 2026-02-26T23:18:02Z

@copilot , we need to update the cDAC docs and write tests for these new APIs

Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

rcj1 · 2026-02-27T01:43:11Z

@copilot try again

…eeping entries, empty/multiple free regions Co-authored-by: rcj1 <77995559+rcj1@users.noreply.github.com>

Copilot · 2026-02-27T01:52:40Z

@copilot try again

Updated the cDAC docs (GC.md) with new API types, data descriptors, globals, constants, and pseudocode for all three methods. Added 6 additional test methods covering edge cases (empty buckets, multiple linked segments, multiple bookkeeping entries, empty/multiple free regions). Total: 9 test methods × 4 architectures = 36 tests, all passing. See commit 50041df6.

rcj1 · 2026-02-27T02:34:22Z

docs/design/datacontracts/GC.md

+
+    int maxSlots = 1;
+    if (IsServerGC())
+        maxSlots = (int)GetGCHeapCount();


@copilot this is incorrect. We need to ensure that we limit by the processor count in this case. See #124875

Fixed in 6320ebd1. Changed maxSlots to read from TotalCpuCount (the processor count) instead of using GetGCHeapCount() for server GC, matching the fix in PR #124875. Added the TotalCpuCount global pointer to datadescriptor.inc (under SERVER_GC), Constants.Globals, and updated the GC.md pseudocode accordingly.

rcj1 · 2026-02-27T02:35:09Z

@copilot fix the build break

rcj1 · 2026-02-27T02:37:24Z

Ah I will merge my changes into main and then this should work better

…it in server GC Co-authored-by: rcj1 <77995559+rcj1@users.noreply.github.com>

In RhpThrowImpl, before calling INLINE_GETTHREAD we were saving the caller-saved register r0 but we should save r2 as well since it contains the exception kind. Fixes #123979. --------- Co-authored-by: Eduardo Velarde <evelardepola@microsoft.com> Co-authored-by: Michal Strehovský <MichalStrehovsky@users.noreply.github.com>

…eInfoFromPEFile (#125502) Fixes #125477 --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: jkotas <6668460+jkotas@users.noreply.github.com>

The new Windows VM image has newer `docker` command, so the dockerfile must be within the build context. And it doesn't have `docker compose` but `docker-compose`.

Fixes #67146 by throwing from `IHost`.`RunAsync`/`StopAsync` with the default host when a `BackgroundService` fails with an exception and `BackgroundServiceExceptionBehavior.StopHost` is set (which is the default).

Add support for reloading configuration to `ChainedConfigurationSource`. Fixes #58683. --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> Co-authored-by: Tarek Mahmoud Sayed <10833894+tarekgh@users.noreply.github.com>

…ingClosedImplementation test for issue #57333 (#124326) ## Description Issue #57333 reported that `GetServices<T>()` inconsistently resolves services when mixing closed generic registrations (`IService<T> -> Impl`) with open generic registrations (`IService<> -> GenericImpl<>`), particularly when `GetService<T>()` is called first. An existing test `CallSiteFactoryResolvesIEnumerableOfOpenGenericServiceAfterResolvingClosedImplementation` was intended to validate this scenario but was marked with `[ActiveIssue("https://github.com/dotnet/runtime/issues/57333")]` because it failed during execution. The failure was due to a test setup issue, not an actual DI bug. ## Changes * **Fixed existing test** in `CallSiteTests`: - `CallSiteFactoryResolvesIEnumerableOfOpenGenericServiceAfterResolvingClosedImplementation` - The test uses `FakeOpenGenericService<TVal>` which requires a `TVal` constructor parameter - The test was failing because no service of type `TVal` was registered in the DI container - Fixed by: - Changed test from `IFakeOpenGenericService<int>` to `IFakeOpenGenericService<string>` (reference type) - Added `FakeStringService` class implementing `IFakeOpenGenericService<string>` - Registered `descriptors.AddSingleton<string>("Foo")` to provide the required dependency - Removed `[ActiveIssue("https://github.com/dotnet/runtime/issues/57333")]` attribute - Test now passes and properly validates the reported behavior Example scenario validated: ```csharp descriptors.Add(ServiceDescriptor.Scoped(typeof(IFakeOpenGenericService<string>), typeof(FakeStringService))); descriptors.Add(ServiceDescriptor.Scoped(typeof(IFakeOpenGenericService<>), typeof(FakeOpenGenericService<>))); descriptors.AddSingleton<string>("Foo"); // Required for FakeOpenGenericService<string> constructor var single = provider.GetService<IFakeOpenGenericService<string>>(); // Returns FakeStringService var enumerable = provider.GetService<IEnumerable<IFakeOpenGenericService<string>>>(); // Returns both FakeStringService and FakeOpenGenericService<string> ``` Test confirms the behavior works correctly - existing implementation handles this scenario properly. No implementation code changes required.  <details> <summary>Original prompt</summary> ---- *This section details on the original issue you should resolve* <issue_title>Enumerable dependencies resolving not consistent when open generic is used (area-Extensions-DependencyInjection)</issue_title> <issue_description> ### Description  Enumerable dependencies are not resolved consistently when open generic services are registered later. Ex: #### Setup ```csharp interface IProcessor<T> {} record AnyProcessor<T> : IProcessor<T>; record IntProcessor : IProcessor<int>; ``` #### Registration ```csharp var services = new ServiceCollection(); services.TryAddEnumerable(ServiceDescriptor.Scoped(typeof(IProcessor<int>), typeof(IntProcessor))); // Fix: ordering open generic above concretes services.TryAddEnumerable(ServiceDescriptor.Scoped(typeof(IProcessor<>), typeof(AnyProcessor<>))); ``` #### Resolving ```csharp var serviceProvider = services.BuildServiceProvider(); using var scope = serviceProvider.CreateAsyncScope(); // bug is reproducible only when below line enabled var processor = scope.ServiceProvider.GetService<IProcessor<int>>(); var processors = scope.ServiceProvider.GetService<IEnumerable<IProcessor<int>>>() ?? Enumerable.Empty<IProcessor<int>>(); // prints "IntProcessor -- IntProcessor" instead of IntProcessor -- AnyProcessor`1 if line 17 commented. Console.WriteLine(string.Join(" -- ", processors.Select(p => p.GetType().Name))); ``` ### To Reproduce sample repo to reproduce the bug https://github.com/skclusive/EnumerableCallSiteBugConsole ### Configuration  - `dotnet --info .NET SDK (reflecting any global.json): Version: 6.0.100-preview.7.21379.14 Commit: 22d70b47bc Runtime Environment: OS Name: Windows OS Version: 10.0.22000 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\6.0.100-preview.7.21379.14\ Host (useful for support): Version: 6.0.0-preview.7.21377.19 Commit: 91ba017 .NET SDKs installed: 5.0.301 [C:\Program Files\dotnet\sdk] 5.0.400 [C:\Program Files\dotnet\sdk] 6.0.100-preview.7.21379.14 [C:\Program Files\dotnet\sdk] .NET runtimes installed: Microsoft.AspNetCore.All 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.18 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.0-preview.7.21378.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.18 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.0-preview.7.21377.19 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 3.1.18 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 5.0.9 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 6.0.0-preview.7.21378.9 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] - Microsoft Visual Studio Community 2022 Preview (64-bit) Version 17.0.0 Preview 3.0 ### Regression?  ### Other information  - Fixes #57333  --- 💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more [Copilot coding agent tips](https://gh.io/copilot-coding-agent-tips) in the docs. --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: rosebyte <14963300+rosebyte@users.noreply.github.com> Co-authored-by: Stephen Toub <stoub@microsoft.com>

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: adamsitnik <6011991+adamsitnik@users.noreply.github.com> Co-authored-by: Adam Sitnik <adam.sitnik@gmail.com> Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

JIT CI is currently broken because #124033 removed some hardware intrinsics from the JIT that makes the JIT incompatible with previous versions of the BCL/SPMI collections.

…bly names only (#125365) `TrimmerRootAssembly` items and the illink `-a` flag previously accepted file paths, creating an MSBuild incremental build gap: illink could read files not declared as build inputs. This aligns both ILLink and ILC to accept only assembly names. ## Description **ILLink command-line (`-a` flag)** - `Driver.cs`: Remove `File.Exists()` pre-check; `-a` now accepts assembly names only - `RootAssemblyInputStep.cs`: Remove `File.Exists()` loading path ("quirks mode"); rename `LoadAssemblyFile()` → `LoadAssemblyByName()` and `fileName` field/parameter → `assemblyName`, resolve exclusively via `Context.TryResolve()` **MSBuild targets** - `Microsoft.NET.ILLink.targets`: Populate `TrimmerRootAssembly` with `@(IntermediateAssembly->'%(Filename)')` (name, no extension) instead of the full item path - `Microsoft.NETCore.Native.targets`: Remove complex two-step `_Raw` + `System.IO.File::Exists()` pattern that converted paths to names; `TrimmerRootAssembly` is now used directly as assembly names; `ManagedAssemblyToLink` still uses `%(Filename)` since it contains file paths - `BrowserWasmApp.targets`: Update condition to compare `%(Identity)` against `$(AssemblyName)` instead of `@(IntermediateAssembly)` - `AppleBuild.LocalBuild.targets`: Use `%(AppleAssembliesToBundle.FileName)` (no extension) instead of `%(Identity)` (full path) - `eng/illink.targets`: Use explicit `$(ILLinkTrimInputPath)$(TargetName)$(TargetExt)` for `AssemblyPaths` instead of the ambiguous `$(ILLinkTrimInputAssembly)` property that shares a name with the root-name item **Test infrastructure** - `TrimmingArgumentBuilder.cs`: Strip extension via `Path.GetFileNameWithoutExtension()` when building `-a` arguments - `TestCaseMetadataProvider.cs`: Move relative-path expansion from `-a` to `-d` (search directory arguments); `-a` values are now passed through as-is - Update 21 test cases to use assembly names without extensions in `[SetupLinkerArgument("-a", ...)]` - `RootLibraryVisibleForwardersWithoutReference.cs`: Add explicit `[SetupLinkerArgument("-reference", "isolated/library.dll")]` so the subdirectory assembly is resolvable, and use assembly name `library` for the `-a` argument - `Mock.cs`: Update reflection-based field access from `"fileName"` to `"assemblyName"` to match the renamed field in `RootAssemblyInput` ## Customer Impact No direct customer impact; this is an internal build/tooling correctness fix. Users who were passing file paths to `TrimmerRootAssembly` (undocumented usage) will need to switch to assembly names. ## Regression No — this is a proactive correctness fix, not a regression fix. ## Testing All 377 affected ILLink test cases pass (`Mono.Linker.Tests`). All 108 `ILLink.Tasks.Tests` pass. ## Risk Low. The change is contained to ILLink/ILC build integration and test infrastructure. The linker's assembly resolution behavior is unchanged — only the file-path loading shortcut is removed. MSBuild targets now pass assembly names consistently, which is what downstream tools (ILC) already required.  --- 💬 We'd love your input! Share your thoughts on Copilot coding agent in our [2 minute survey](https://gh.io/copilot-coding-agent-survey). --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: sbomer <787361+sbomer@users.noreply.github.com> Co-authored-by: Sven Boemer <sbomer@gmail.com>

@lewing

## Summary The Linux `curl` command in `AcquireWasiSdk.targets` has **no retry logic**, unlike the Windows `download-wasi-sdk.ps1` which retries up to 8 times on partial transfers. This causes transient GitHub download failures (rate limits, network blips, truncated responses) to fail the entire build with a cryptic `tar` error: ``` tar: Error is not recoverable: exiting now ``` ## Change Add `--show-error --fail --retry 3 --retry-delay 5` to the Linux curl invocation: ```diff - curl --silent -L -o wasi-sdk-25.0.tar.gz <url> + curl --silent --show-error --fail --retry 3 --retry-delay 5 -L -o wasi-sdk-25.0.tar.gz <url> ``` - `--retry 3`: Retry up to 3 times on failure - `--retry-delay 5`: Wait 5 seconds between retries ## Motivation Build [2924549](https://dev.azure.com/dnceng/internal/_build/results?buildId=2924549) failed on `Linux_Alpine_x64` due to a transient wasi-sdk download failure. The next scheduled build succeeded without any code change — confirming the issue was transient. The Windows download script already handles this case with up to 8 retry attempts. cc @lewing --------- Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

…ory-region-apis

…r comparison, null guard, constants Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

Copilot · 2026-03-13T19:55:25Z

@copilot , address feedback

All four feedback items addressed in 33ece94.

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n3kvsblobprodcus335.vsblob.vsassets.io
- Triggering command: /home/REDACTED/work/runtime/runtime/.dotnet/dotnet /home/REDACTED/work/runtime/runtime/.dotnet/dotnet /home/REDACTED/work/runtime/runtime/.dotnet/sdk/11.0.100-preview.1.26104.118/NuGet.Build.Tasks.Console.dll Recursive=True;CleanupAssetsForUnsupportedProjects=True;DisableParallel=False;Force=False;ForceEvaluate=False;HideWarningsAndErrors=False;IgnoreFailedSources=False;Interactive=False;NoCache=False;NoHttpCache=False;RestorePackagesConfig=False /home/REDACTED/work/runtime/runtime/.dotnet/sdk/11.0.100-preview.1.26104.118/MSBuild.dll /home/REDACTED/work/runtime/runtime/src/native/managed/cdac/tests/Microsoft.Diagnostics.DataContractReader.Tests.csproj VSTestTestCaseFilter=FullyQualifiedName~GCMemoryRegion;VSTestNoLogo=true;NuGetInteractive=false;VSTestArtifactsProcessingMode=collect;VSTestSessionCorrelationId=7354_16bbed7e-03a6-44dc-8315-cd0c30f9478b;EnableDefaultCompileItems=false;EnableDefaultEmbedde (dns block)
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pe4vsblobprodcus351.vsblob.vsassets.io
- Triggering command: /home/REDACTED/work/runtime/runtime/.dotnet/dotnet dotnet build src/native/managed/cdac/Microsoft.Diagnostics.DataContractReader.Contracts/Microsoft.Diagnostics.DataContractReader.Contracts.csproj (dns block)

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Pull request overview

Copilot reviewed 16 out of 16 changed files in this pull request and generated 4 comments.

src/native/managed/cdac/Microsoft.Diagnostics.DataContractReader.Contracts/Contracts/GC/GC_1.cs

+        int maxRegions = MaxHandleTableRegions;
+        TargetPointer handleTableMap = _target.ReadGlobalPointer(Constants.Globals.HandleTableMap);
+        while (handleTableMap != TargetPointer.Null && maxRegions >= 0)
+        {
+            Data.HandleTableMap map = _target.ProcessedData.GetOrAdd<Data.HandleTableMap>(handleTableMap);
+            foreach (TargetPointer bucketPtr in map.BucketsPtr)
+            {
+                if (bucketPtr == TargetPointer.Null)
+                    continue;
+
+                Data.HandleTableBucket bucket = _target.ProcessedData.GetOrAdd<Data.HandleTableBucket>(bucketPtr);
+                for (uint j = 0; j < tableCount; j++)
+                {
+                    TargetPointer handleTablePtr = _target.ReadPointer(bucket.Table + (ulong)(j * _target.PointerSize));
+                    if (handleTablePtr == TargetPointer.Null)
+                        continue;
+
+                    Data.HandleTable handleTable = _target.ProcessedData.GetOrAdd<Data.HandleTable>(handleTablePtr);
+                    if (handleTable.SegmentList == TargetPointer.Null)
+                        continue;
+
+                    TargetPointer segmentPtr = handleTable.SegmentList;
+                    TargetPointer firstSegment = segmentPtr;
+                    do
+                    {
+                        Data.TableSegment segment = _target.ProcessedData.GetOrAdd<Data.TableSegment>(segmentPtr);
+                        regions.Add(new GCMemoryRegionData
+                        {
+                            Start = segmentPtr,
+                            Size = handleSegmentSize,
+                            Heap = (int)j,
+                        });
+                        segmentPtr = segment.NextSegment;
+                        maxRegions--;
+                    } while (segmentPtr != TargetPointer.Null && segmentPtr != firstSegment && maxRegions >= 0);
+                }
+            }
+            handleTableMap = map.Next;
+            maxRegions--;
+        }


src/native/managed/cdac/Microsoft.Diagnostics.DataContractReader.Contracts/Contracts/GC/GC_1.cs

+            curr = segment.Next;
+            if (curr == start)
+                break;
+            if (--iterationMax <= 0)


docs/design/datacontracts/GC.md

+    // Safety caps matching native DAC
+    const int MaxHandleTableRegions = 8192;
+    const int MaxBookkeepingRegions = 32;
+    const int MaxSegmentListIterations = 2048;
+
+    int maxRegions = MaxHandleTableRegions;
+    TargetPointer handleTableMap = target.ReadGlobalPointer("HandleTableMap");
+    while (handleTableMap != null && maxRegions >= 0)
+    {
+        HandleTableMap map = Read<HandleTableMap>(handleTableMap);
+        foreach (TargetPointer bucketPtr in map.BucketsPtr)
+        {
+            if (bucketPtr == null) continue;
+            HandleTableBucket bucket = Read<HandleTableBucket>(bucketPtr);
+            for (uint j = 0; j < tableCount; j++)
+            {
+                TargetPointer htPtr = ReadPointer(bucket.Table + j * PointerSize);
+                if (htPtr == null) continue;
+                HandleTable ht = Read<HandleTable>(htPtr);
+                if (ht.SegmentList == null) continue;
+                TargetPointer seg = ht.SegmentList;
+                TargetPointer first = seg;
+                do
+                {
+                    TableSegment ts = Read<TableSegment>(seg);
+                    regions.Add(new GCMemoryRegionData { Start = seg, Size = handleSegmentSize, Heap = (int)j });
+                    seg = ts.NextSegment;
+                    maxRegions--;
+                } while (seg != null && seg != first && maxRegions >= 0);
+            }
+        }
+        handleTableMap = map.Next;
+        maxRegions--;
+    }


docs/design/datacontracts/GC.md

+void AddSegmentList(TargetPointer start, FreeRegionKind kind, List<GCMemoryRegionData> regions, int heap = 0)
+{
+    int iterationMax = MaxSegmentListIterations;
+    TargetPointer curr = start;
+    while (curr != null && iterationMax-- > 0)
+    {
+        HeapSegment seg = Read<HeapSegment>(curr);
+        if (seg.Mem != null)
+        {
+            ulong size = (seg.Mem < seg.Committed) ? seg.Committed - seg.Mem : 0;
+            regions.Add(new GCMemoryRegionData { Start = seg.Mem, Size = size, ExtraData = kind, Heap = heap });
+        }
+        curr = seg.Next;
+        if (curr == start) break;
+    }


Initial plan

34f599c

Copilot AI assigned Copilot and max-charlamb Feb 26, 2026

Copilot started work on behalf of max-charlamb February 26, 2026 22:09 View session

github-actions bot added the area-Diagnostics-coreclr label Feb 26, 2026

Copilot AI and others added 4 commits February 26, 2026 22:41

Add ISOSMemoryEnum/SOSMemoryRegion interfaces and GC data descriptors…

50cb033

… for memory region types Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

Add managed Data classes, DataType entries, Constants.Globals, IGCHea…

04b43d8

…p free region fields, and IGC contract methods Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

Implement GC_1 memory region methods, SOSMemoryEnum class, and SOSDac…

4f6b717

…Impl integration Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

Copilot AI changed the title ~~[WIP] Implement native cDAC Memory Region APIs~~ Implement cDAC Memory Region APIs (GetHandleTableMemoryRegions, GetGCBookkeepingMemoryRegions, GetGCFreeRegions) Feb 26, 2026

Copilot finished work on behalf of max-charlamb February 26, 2026 23:06

Copilot started work on behalf of max-charlamb February 26, 2026 23:18 View session

Changes before error encountered

2c5d3f5

Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

Copilot started work on behalf of rcj1 February 27, 2026 01:43 View session

Add edge-case tests: empty buckets, multiple segments, multiple bookk…

50041df

…eeping entries, empty/multiple free regions Co-authored-by: rcj1 <77995559+rcj1@users.noreply.github.com>

Copilot finished work on behalf of rcj1 February 27, 2026 01:54

rcj1 reviewed Feb 27, 2026

View reviewed changes

Copilot started work on behalf of rcj1 February 27, 2026 02:34 View session

Use TotalCpuCount instead of GetGCHeapCount for handle table slot lim…

6320ebd

…it in server GC Co-authored-by: rcj1 <77995559+rcj1@users.noreply.github.com>

Copilot finished work on behalf of rcj1 February 27, 2026 02:43

Copilot started work on behalf of rcj1 February 27, 2026 02:43 View session

rcj1 marked this pull request as ready for review February 27, 2026 02:44

Copilot AI review requested due to automatic review settings February 27, 2026 02:44

rcj1 marked this pull request as draft February 27, 2026 02:44

eduardo-vp and others added 11 commits March 13, 2026 19:26

Remove redundant NULL check for pDir in ClrDataAccess::GetMetaDataFil…

dfb9e0d

…eInfoFromPEFile (#125502) Fixes #125477 --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: jkotas <6668460+jkotas@users.noreply.github.com>

[HTTP] Stress fix for the new Windows VM (#125125)

9907333

The new Windows VM image has newer `docker` command, so the dockerfile must be within the build context. And it doesn't have `docker compose` but `docker-compose`.

Propagate BackgroundService exceptions from the host (#124863)

4574075

Fixes #67146 by throwing from `IHost`.`RunAsync`/`StopAsync` with the default host when a `BackgroundService` fails with an exception and `BackgroundServiceExceptionBehavior.StopHost` is set (which is the default).

JIT: Bump JIT-EE GUID after removal of hardware intrinsics (#125515)

94e4dff

JIT CI is currently broken because #124033 removed some hardware intrinsics from the JIT that makes the JIT incompatible with previous versions of the BCL/SPMI collections.

[browser][coreCLR] Loading WebCIL (#124904)

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dotnet-policy-service bot added the linkable-framework Issues associated with delivering a linker friendly framework label Mar 13, 2026

Fix GetGCFreeRegions to handle non-regions GC builds gracefully

cfc2e0a

Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

Copilot AI requested a review from max-charlamb March 13, 2026 19:38

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Merge remote-tracking branch 'origin/main' into copilot/implement-mem…

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…ory-region-apis

max-charlamb removed the linkable-framework Issues associated with delivering a linker friendly framework label Mar 13, 2026

Address review feedback: add SOSMemoryEnum validation, explain pointe…

33ece94

…r comparison, null guard, constants Co-authored-by: max-charlamb <44248479+max-charlamb@users.noreply.github.com>

Copilot AI changed the title ~~Rebase memory region API branch onto latest main to clean up PR diff~~ Implement cDAC memory region APIs (GetHandleTableMemoryRegions, GetGCBookkeepingMemoryRegions, GetGCFreeRegions) Mar 13, 2026

Copilot finished work on behalf of max-charlamb March 13, 2026 19:56

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Implement cDAC memory region APIs (GetHandleTableMemoryRegions, GetGCBookkeepingMemoryRegions, GetGCFreeRegions)#124926

Implement cDAC memory region APIs (GetHandleTableMemoryRegions, GetGCBookkeepingMemoryRegions, GetGCFreeRegions)#124926
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copilot/implement-memory-region-apis

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Copilot AI commented Feb 26, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Description

SOSMemoryEnum

IGC Contract Extensions

Data Types & Descriptors

Documentation & Tests

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Copilot AI commented Feb 26, 2026 •

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Copilot AI commented Mar 13, 2026 •

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