[ClusterLabs/libqb] 2a06ff: epoll: don't miss poll events under high load

[David Vossel]

  Branch: refs/heads/master
  Home:   https://github.com/ClusterLabs/libqb
  Commit: 2a06ffecde042abaecc44c0828fe0e69ff8e6e9c
     
https://github.com/ClusterLabs/libqb/commit/2a06ffecde042abaecc44c0828fe0...
  Author: Michael Chapman <mike(a)very.puzzling.org&gt;
  Date:   2014-06-05 (Thu, 05 Jun 2014)

  Changed paths:
    M lib/loop_poll_epoll.c

  Log Message:
  -----------
  epoll: don't miss poll events under high load

If multiple epoll sources generate events simultaneously, it is possible
for more jobs to be added to particular priority level than will be
handled in one go by qb_loop_run_level(). If one of these epoll sources
gains a new event (say, by switching from "readable" to "readable and
writeable"), then this new event would be missed.

To fix this, merge new epoll events into revents regardless of whether
the job is on the joblist. When the job is dispatched, revents will be
cleared, or the epoll source will be deleted entirely.


  Commit: 80fd68c26304e9a1e45ed33d8e09f1829d0af6e1
     
https://github.com/ClusterLabs/libqb/commit/80fd68c26304e9a1e45ed33d8e09f...
  Author: David Vossel <dvossel(a)redhat.com&gt;
  Date:   2014-06-19 (Thu, 19 Jun 2014)

  Changed paths:
    M lib/loop_poll_epoll.c

  Log Message:
  -----------
  Merge pull request #121 from AnchorCat/epoll

epoll: don't miss poll events under high load


Compare: https://github.com/ClusterLabs/libqb/compare/ac7a7ed69967...80fd68c26304