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A comment on No nuances, just buggy code (was: related to Spinlock implementation). Parent comment

Re:No nuances, just buggy code (was: related to Spinlock imp... by gmueckl on Sunday January 05, 2020 @02:54PM (#21963578)
The information is right there in the documentation:

https://docs.microsoft.com/en-us/windows/win32/sync/critical...

The paragraph about InitializeCriticalSectionAndSpinCount and SetCriticalSectionSpinCount describe the behavior. IIRC, the default spin count used to be pretty high (1000 loops or so). Not sure if that was changed.

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Re:No nuances, just buggy code (was: related to Spinlock imp... by YZF on Sunday January 05, 2020 @08:19PM (#21965634)
Interesting. There's also that anecdote about the heap manager using a spin count of 4000. I wasn't aware this happened by default (I didn't see any mention of this in InitializeCriticalSection). I guess it's all down to the probability of contention vs. the amount of time the mutex is held.
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