Make FailFast a QCall #98908
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Make FailFast a QCall #98908
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@dotnet/dotnet-diag Could you please comment on impact of this change on Watson? |
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I checked the reflection case and confirmed that the calculated return address is in the same location as before this change. |
@leculver @mikem8361 - I think you guys are in the best position to evaluate. |
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It look like it should have any impact on Watson to me. |
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src/coreclr/System.Private.CoreLib/src/System/Environment.CoreCLR.cs
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Co-authored-by: Jan Kotas <[email protected]>
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This has a similar structure to FailFast as converted in dotnet#98908. Contributes to dotnet#95695
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* Convert GetCurrentMethod to QCALL This has a similar structure to FailFast as converted in #98908. Contributes to #95695 * Simplify code for QCALL Co-authored-by: Jan Kotas <[email protected]> --------- Co-authored-by: Jan Kotas <[email protected]>
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I confirmed that the instruction pointer found by stack walking matched the IP found by the FCALL version (pointing to the return address of the function that called FailFast). I do not know if that is sufficient to preserve the "Watson bucketization" that the many comments around this code mention.
TODO:
retAdressis the same after this change for direct calls toFailFast. It is the return address in the calling function.CallDescrWorkerInternalatCallDescrWorkerInternalReturnAddress. Maybe that is not the best address for bucketization, but it's the same address as before.GenericFailFastdoes a GCPROTECT and the QCALLS don't do anything that triggers a GC before callingGenericFailFast, so are they needed?Contributes to #95695