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feat(memory): Allocator-backed global memory limits (#544)

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Policy evaluation at scale needs to be able to set memory limits
so that a bad policy does not hog memory or to ensure that
policy evaluation itself does not use too much memory which could
cause other components to suffer.

This PR introduces capability to set and enforce global memory limits.
It also lays the groundwork for enabling per evaluation limits in future.

Once a global memory limit is set, Regorus maintains per thread counters
to track memory activity (allocation, deallocation) of a thread.
These counters are periodically flushed to global memory counters.
Per thread counters avoid the contention that updating global counters
on each alloc/free would cause.

Policy evaluation periodically checks these counters and raises errors
if allocated memory has exceeded the configured limit.

Currently memory limit capability is exposed only to FFI and C#.

Also update mimalloc to v2.2.6

Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>
This commit is contained in:
Anand Krishnamoorthi
2026-01-24 07:08:54 +05:30
committed by GitHub
parent 80686d6ed1
commit fd59bb5a91
93 changed files with 9772 additions and 3779 deletions
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16
.github/workflows/test-csharp.yml vendored
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@@ -11,7 +11,7 @@ on:
- cron: "0 8 * * *"
env:
VersionSuffix: ${{ github.event_name == 'workflow_dispatch' && 'manualtrigger' || null }}
VersionSuffix: ${{ github.run_id }}
jobs:
build-ffi:
@@ -95,11 +95,11 @@ jobs:
# Note that we need to supply the target folder within the folder where artifacts are downloaded.
- name: Build Regorus binding
run: dotnet build /p:Configuration=Release /p:RegorusFFIArtifactsDir=./tmp/bindings/ffi/target
run: dotnet build /p:Configuration=Release /p:RegorusFFIArtifactsDir=./tmp/bindings/ffi/target /p:VersionSuffix=${{ env.VersionSuffix }}
working-directory: ./bindings/csharp/Regorus
- name: Pack
run: dotnet pack /p:RegorusFFIArtifactsDir=./tmp/bindings/ffi/target
run: dotnet pack /p:RegorusFFIArtifactsDir=./tmp/bindings/ffi/target /p:VersionSuffix=${{ env.VersionSuffix }}
working-directory: ./bindings/csharp/Regorus
- name: Upload Regorus nuget
@@ -144,15 +144,15 @@ jobs:
path: ./bindings/csharp/regorus-nuget/
- name: Restore Regorus.Tests
run: dotnet restore /p:RestoreAdditionalProjectSources=../regorus-nuget /p:UseLocalRegorus=false
run: dotnet restore /p:UseLocalRegorus=false /p:VersionSuffix=${{ env.VersionSuffix }} /p:RestoreAdditionalProjectSources=../regorus-nuget
working-directory: ./bindings/csharp/Regorus.Tests
- name: Run Regorus.Tests
run: dotnet test --no-restore -p:UseLocalRegorus=false
run: dotnet test --no-restore /p:UseLocalRegorus=false /p:VersionSuffix=${{ env.VersionSuffix }}
working-directory: ./bindings/csharp/Regorus.Tests
- name: Restore TestApp
run: dotnet restore /p:RestoreAdditionalProjectSources=../regorus-nuget
run: dotnet restore /p:VersionSuffix=${{ env.VersionSuffix }} /p:RestoreAdditionalProjectSources=../regorus-nuget
working-directory: ./bindings/csharp/TestApp
- name: Build TestApp
@@ -164,7 +164,7 @@ jobs:
working-directory: ./bindings/csharp/TestApp
- name: Restore TargetExampleApp
run: dotnet restore /p:RestoreAdditionalProjectSources=../regorus-nuget
run: dotnet restore /p:VersionSuffix=${{ env.VersionSuffix }} /p:RestoreAdditionalProjectSources=../regorus-nuget
working-directory: ./bindings/csharp/TargetExampleApp
- name: Build TargetExampleApp
@@ -174,5 +174,3 @@ jobs:
- name: Run TargetExampleApp
run: dotnet run --no-build --framework net8.0
working-directory: ./bindings/csharp/TargetExampleApp