Graceful shutdown

[pveber]

When I send a shutdown to the server via:

$echo shutdown 1 > www/var/run/mosaic-cmd

the server obediently replies:

ocsigenserver: main: Command received: shutdown 1

but does not exit (it stops taking requests though). Is that expected?

[dinosaure]

After much testing with @vouillon, we are able to find the bug that actually comes from Lwt (issue #48) which corresponds to a competition problem between the parent process and a thread wanting both flush. The parent wants flush because it exits (with the action shutdown). This is an action added at Lwt with at_exit. And thread would also flush after writing.

[pveber]

Thanks a lot for having a look at this. I'll gladly give it a try once
available on the tree!
Le 2 avr. 2014 00:01, "Calascibetta Romain" notifications@github.com a
écrit :

After much testing with @vouillon https://github.com/vouillon, we are
able to find the bug that actually comes from Lwt (issue #48ocsigen/lwt#48)
which corresponds to a competition problem between the parent process and a
thread wanting both flush. The parent wants flush because it exits (with
the action shutdown). This is an action added at Lwt with at_exit. And
thread would also flush after writing.

Reply to this email directly or view it on GitHubhttps://github.com//issues/22#issuecomment-39215730
.

[aantron]

Two years later, this should be fixed now in Lwt master (ocsigen/lwt@1254294). Thanks for the report. I'm sure this took quite a while to track down – it only occurs under pretty specific conditions. The effort is appreciated.