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Re: [PATCH] Fix rwlock stall with PREFER_WRITER_NONRECURSIVE_NP (bug 23861)


On Dez 11 2018, Florian Weimer <fweimer@redhat.com> wrote:

> * Andreas Schwab:
>
>>> No, without atomics, the code has a data race and undefined behavior.
>>
>> In which way?  There is a single setter, and it doesn't matter how long
>> the thread takes to see the transition from zero to non-zero.
>
> | The execution of a program contains a data race if it contains two
> | conflicting actions in different threads,

In which way do the actions conflict?

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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