Re: [PATCH 18/19] index-helper: autorun

On Thu, Mar 17, 2016 at 1:27 AM, Johannes Schindelin
[off-list ref] wrote:

I am much more concerned about concurrent accesses and the communication
between the Git processes and the index-helper. Writing to the .pid file
sounds very fragile to me, in particular when multiple processes can poke
the index-helper in succession and some readers are unaware that the index
is being refreshed.

It's not that bad. We should have protection in place to deal with
this and fall back to reading directly from file when things get
suspicious. But I agree that sending UNIX signals (or PostMessage) is
not really good communication.
-- 
Duy