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What the returned ContextID from ICorProfilerInfo::GetThreadContext can be used? Can ThreadLocalStorage data be access via it? RRS feed

  • Question

  •  I am coding a CLR profiler, want to get the TLS data, is there a way by profiler?

     Thanks.

    YongMing

    Tuesday, March 4, 2014 3:51 AM

All replies

  • Hi YongMing,

    I am trying to involve someone familiar with this issue to come into this thread. Thank you for your understanding.

    Regards,


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    Tuesday, March 4, 2014 7:49 AM
    Moderator
  • Thanks. My question is mainly about how to get the managed thread local storage data from CLR profiler unmanaged code.

    Regards.

    Tuesday, March 4, 2014 9:46 AM
  • Which TLS data do you mean? OS TLS can be accessed via OSThreadID and some Win32 API.

    Managed TLS is defined by ThreadStaticAttribute on field and should be accessible via ICorProfilerInfo2::GetThreadStaticAddress, you don't need ContextID for it.

    -Karel

    Thursday, March 6, 2014 9:31 PM
    Moderator
  • Karel,

       Thanks a lot for your explanation. TLS here means Thread Local Storage as your understanding.

       One more thing need your confirmation: when using ICorProfiler interface to instrument ELT callback into IL methods, whether the unmanaged profiler callback code runs in the same thread with the intercepted managed methods?  As you know, the thread id gotten in managed code is different with the thread id gotten by COM ICorProfilerInfo or Windows API, there seems no way to mapping currntly.

    Thanks in advance!

    YongMing

    Friday, March 7, 2014 9:03 AM
  • Hi Karel,

       I can't find any sample code for ICorProfilerInfo2::GetThreadStaticAddress . Can you give me an example or some hints on using it? Thanks!

      Regards

    --YongMing

     

    Monday, March 10, 2014 5:49 AM