microsoft/CLRInstrumentationEngine

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The CLR Instrumentation Engine is a cooperation profiler that allows running multiple profiling extensions in the same process.

Stars: 102
Forks: 52
Open beginner issues: 0
Indexed issues: 65
Avg merge: 13h 11m
Merged PRs (30d): 6

Dominant language: C++
License: No license data
Last GitHub push: Sep 8, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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65 open issues indexed

Loading a Raw Profiler with an Instrumentation Method DLL causes Access Violation during process teardown phase on pwsh.exe Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#593 · Opened Mar 4, 2026
Extensions.Base can't support System.Func`10+ Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

microsoft/CLRInstrumentationEngine#559 · Opened Jun 1, 2023
Provide better error messages for InstrumentationMethod initialization failure Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

microsoft/CLRInstrumentationEngine#526 · 1 reaction · Opened Mar 20, 2023
Dump logs are not correctly showing IL changes Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#497 · Opened Mar 23, 2022
DebugWait variable should check on the value of the variable Open

bug good first issue

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#496 · Opened Mar 23, 2022
Make MicrosoftInstrumentationEngine_FileLogPath smarter Open

good first issue suggestion

Difficulty 3/5 1-2 days Newbie friendliness 45/100

microsoft/CLRInstrumentationEngine#486 · Opened Mar 17, 2022
Ensure ClrInstrumentationEngine handles ref fields Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

microsoft/CLRInstrumentationEngine#464 · 7 comments · Opened Feb 10, 2022
Remove ProfilerProxy linking in InstrumentationEngine.lib Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#417 · Opened Jul 19, 2021
TestRawProfilerHookCallsGetAssemblyReferences fails due to callback not being called Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#414 · Opened Jul 13, 2021
Update Docker build images to use MCR Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

microsoft/CLRInstrumentationEngine#411 · Opened Jul 9, 2021
CLRIE appears to be incompatible with 1 or more MS Exchange services (services crash) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#399 · 8 comments · Opened May 13, 2021
Raw profiler hook fails because of a null ref Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#371 · 1 comment · Opened Feb 17, 2021
Raw profiler hook doesn't work with a profiler that adds methods Open

microsoft/CLRInstrumentationEngine#370 · 22 comments · 1 assignee · Opened Feb 17, 2021
Enable reference count logging on Linux Open

task

Difficulty 3/5 1-2 days Newbie friendliness 45/100

microsoft/CLRInstrumentationEngine#360 · Opened Feb 9, 2021
Add support for macOS Open

task

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#350 · 2 comments · Opened Jan 27, 2021
Fix design doc around "AddInstrumentationMethod" Open

bug documentation

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

microsoft/CLRInstrumentationEngine#345 · Opened Jan 21, 2021
Allow schema for attaching instrumentation methods to include instrumentation method configuration Open

task

Difficulty 4/5 3-5 days Newbie friendliness 30/100

microsoft/CLRInstrumentationEngine#344 · Opened Jan 21, 2021
GetLoggingFlags returns global logging flags, not IM logging flags Open

api change bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#334 · Opened Dec 11, 2020
PR builds sometimes fail during build step with project.assets.json Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#330 · 1 comment · Opened Nov 17, 2020
Memory leaks on process shutdown Open

bug task

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#319 · 1 comment · Opened Oct 23, 2020
EmittedDynamicCodeTest fails locally Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 20/100

microsoft/CLRInstrumentationEngine#312 · 1 comment · Opened Oct 21, 2020
Improve type safety of internal classes Open

bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#311 · Opened Oct 20, 2020
unable to load a profiler thru the raw profiler hook on linux Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

microsoft/CLRInstrumentationEngine#302 · 2 comments · Opened Oct 1, 2020
Using IInstructionGraph::InsertBefore after applying SingleRetDefaultInstrumentation can fail to update target instructions Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

microsoft/CLRInstrumentationEngine#298 · 2 comments · Opened Sep 23, 2020
Some ICorProfilers might "reset" event mask on shutdown which can produce noise. Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#293 · Opened Sep 18, 2020
Api for getting original instruction size Open

api change

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#288 · 3 comments · Opened Sep 11, 2020
Failed to attach extension Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#283 · 3 comments · Opened Aug 5, 2020
RawProfilerHook needs both CLR and CoreCLR profiler hooks Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

microsoft/CLRInstrumentationEngine#269 · 1 comment · Opened Jun 5, 2020
CInstructionGraph - Batching API Open

design discussion

microsoft/CLRInstrumentationEngine#268 · 2 comments · 1 assignee · Opened May 27, 2020
AllowLogEntry() called in LoggerService's Log*() methods are behind a critical section Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#263 · Opened May 8, 2020
Document use of GetReJITParameters over ReJITCompilationStarted Open

documentation

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#255 · 1 comment · Opened May 4, 2020
Allow purely managed instrumentation libraries to be loaded through CLRIE Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#233 · 4 comments · Opened Mar 17, 2020
CLRIE dlls fail to load on IIS, hosted on windows server 2008R2, 4.0 application pool Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#232 · 7 comments · Opened Mar 12, 2020
Attach: Configuration source can specify log level for individual instrumentation methods Open

task

microsoft/CLRInstrumentationEngine#228 · 1 comment · 1 assignee · Opened Mar 10, 2020
Attach: Add tests for attaching CLRIE to existing process Open

task

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#208 · 4 comments · Opened Feb 21, 2020
Attach: Verify event mask setting during attach initialization Open

task

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/CLRInstrumentationEngine#205 · Opened Feb 20, 2020
RawProfilerHook bug with DynaTrace - Process crashes. Open

bug Dynatrace

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#203 · 3 comments · Opened Feb 18, 2020
RawProfilerHook bug with AppDynamics on CMethodInfo::GetClassId Open

AppDynamics bug raw profiler hook

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#199 · Opened Feb 4, 2020
Documentation and annotations on IInstructionFactory::CreateBranchInstruction is wrong. Open

bug documentation

Difficulty 1/5 Under an hour Newbie friendliness 45/100

microsoft/CLRInstrumentationEngine#193 · 1 comment · Opened Jan 24, 2020
suggestion - apply flood protection/throttling of log events Open

suggestion

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#189 · Opened Jan 6, 2020
suggestion - remove __debugbreak() Open

suggestion task

Difficulty 3/5 1-2 days Newbie friendliness 42/100

microsoft/CLRInstrumentationEngine#188 · 2 comments · Opened Jan 6, 2020
Microsoft Instrumentation Method Product Names Open

product name

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#185 · 1 comment · Opened Dec 18, 2019
Create docs/examples for how to write your own Instrumentation Method Open

documentation

microsoft/CLRInstrumentationEngine#180 · 1 assignee · Opened Dec 10, 2019
Impress upon readers the importance of the CreateBaseline API Open

documentation

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

microsoft/CLRInstrumentationEngine#169 · 2 comments · Opened Nov 15, 2019
FileLoggerSink.cpp will fail to create a file if the directory path does not exist. Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

microsoft/CLRInstrumentationEngine#157 · Opened Nov 4, 2019
Support .NET < 4.0 and COM registration for CLRInstrumentationEngine on Windows Open

task

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#153 · 8 comments · Opened Oct 21, 2019
CLRIE Message logging is too verbose Open

design discussion

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#148 · 2 comments · 2 reactions · Opened Oct 7, 2019
CLRIE depends on the experimental filesystem and will need to migrate in the future Open

bug

Difficulty 5/5 Over a week Newbie friendliness 20/100

microsoft/CLRInstrumentationEngine#145 · Opened Oct 3, 2019
CLR Will No Longer Release Profiler COM Object Open

task

Difficulty 3/5 1-2 days Newbie friendliness 42/100

microsoft/CLRInstrumentationEngine#142 · 1 comment · Opened Oct 3, 2019
Add Package validations Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/CLRInstrumentationEngine#120 · Opened Aug 7, 2019

microsoft/CLRInstrumentationEngine

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