>On 3/27/2020 10:53 AM, sten.kristian.ivars...@gmail.com wrote: >>> On 3/26/2020 7:19 PM, Ken Brown via Cygwin wrote: >>>> On 3/26/2020 6:39 PM, Ken Brown via Cygwin wrote: >>>>> On 3/26/2020 6:01 PM, sten.kristian.ivars...@gmail.com wrote: >>>>>> The ENIXIO occurs when parallel child-processes simultaneously >>>>>> using O_NONBLOCK opening the descriptor. >>>>> >>>>> This is consistent with my guess that the error is generated by >>>>> fhandler_fifo::wait. I have a feeling that read_ready should have >>>>> been created as a manual-reset event, and that more care is needed >>>>> to make sure it's set when it should be. >>>>> >>>>>> I could provide a code-snippet >>>>>> to reproduce it if wanted ? >>>>> >>>>> Yes, please! >>>> >>>> That might not be necessary. If you're able to build the git repo >>>> master branch, please try the attached patch. >> >>> Here's a better patch. >> >> >> I finally succeeded to build latest master (make is not my favourite >> tool) and added the patch, but still no success in my little >> test-program (see >> attachment) when creating a write-file-descriptor with O_NONBLOCK
>Your test program fails for me on Linux too. Here's the output from one run: You're right. That was extremely careless of me to not test this in Linux first :-) I can assure that we have a use case that works on Linux but not in Cygwin, but it seems like I failed to narrow it down in the wrong way I'll try to rearrange my code (that works in Linux) to mimic our application but in a simple way (I'll be back) [snip] >Ken -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
