[PATCH v2 0/2] silent fork retry with shm (broke emacs-X11)

Michael Haubenwallner michael.haubenwallner@ssi-schaefer.com
Wed Jul 31 10:35:00 GMT 2019

Hi Corinna,

On 7/30/19 6:07 PM, Corinna Vinschen wrote:
> Hi Michael,
> On Jul 30 17:22, Michael Haubenwallner wrote:
>> Hi,
>> following up
>> https://cygwin.com/ml/cygwin-patches/2019-q2/msg00155.html
>> It turns out that fixup_shms_after_fork does require the child pinfo to
>> be "remember"ed, while the fork retry to be silent on failure requires
>> the child to not be "attach"ed yet.
>> As current pinfo.remember performs both "remember" and "attach" at once,
>> the first patch does introduce pinfo.remember_without_attach, to not
>> change current behaviour of pinfo.remember and keep patches small.
>> However, my first thought was to clean up pinfo API a little and have
>> remember not do both "remember+attach" at once, but introduce some new
>> remember_and_attach method instead.  But then, when 'bool detach' is
>> true, the "_and_attach" does feel wrong.
> I'd prefer to drop the reattach call from remember, calling both of them
> where appropriate.

Fine with me, even if that looks a little more complicated for spawn.


More information about the Cygwin-patches mailing list