Read-write lock for Python

Geoff Bache geoff.bache at gmail.com
Thu Apr 28 19:14:45 CEST 2011


On Thu, Apr 28, 2011 at 4:28 PM, Jean-Michel Pichavant
<jeanmichel at sequans.com> wrote:
> Geoff Bache wrote:
>>
>> Hi all,
>>
>> I currently find myself needing a Python read-write lock. I note that
>> there is none in the standard library, but googling "python read-write
>> lock" quickly produced 6 different competing examples, including two
>> languishing patch proposals for the standard library.
>>
>> I can always pick a random one and hope for the best, but I was hoping
>> someone here might have a tip for one that has been used and debugged
>> and is likely to work.
>>
>> Regards,
>> Geoff Bache
>>
>
> What about
>
> http://docs.python.org/library/threading.html#lock-objects

Those aren't read-write locks. They are basic locks, which don't
distinguish between readers and writers. I need to be able to lock
between reader and writer operations, without readers locking each
other out.

/Geoff



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