win32: fix in_stackwalk mutex #37002
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This should make this previously non-atomic mutex threadsafe. Fixes #35117
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This is supposed to lock out doing a backtrace while adding new symbols? What happens when the profiler fires while we're in that code? Shouldn't there be a |
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I intended to have the profiler get the lock before stopping any threads. I considered alternatively using trylock, but hoped it shouldn't add too much noise (beyond the problems already seen with profiling thread scaling in the presence of locks #9224). I think I may have forgotten to finish with doing that part of the PR however (cf. your past work in #34454 and open issue #13294) |
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Hmm, I see, I guess that works on win/mac since the profiler starts on a separate thread. This LGTM then. |
Keno
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Aug 11, 2020
JeffBezanson
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simeonschaub
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Aug 29, 2020
This should make this previously non-atomic mutex threadsafe. Fixes JuliaLang#35117
Sacha0
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Oct 23, 2020
This should make this previously non-atomic mutex threadsafe. Fixes #35117
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This should make this previously non-atomic mutex threadsafe.
Fixes #35117