When and where might kevent return errors?

Question

Invalid items in the change list (or with EV_RECEIPT set) will cause kevent to return results with the EV_ERROR flag set. What other condition results in that flag?

A Google search reveals that EV_RECEIPT support is related to "disambiguating error conditions;" I wonder when this edge case applies.

Is it safe to assume that errors from the change list will appear first in the event list, before actual events?

What if we only consider filters related to sockets?

score -1 · Answer 1 · answered Mar 21 '14 at 11:55

-1

Here is a document that discusses kqueue http://doc.geoffgarside.co.uk/kqueue/ and it makes reference to http://doc.geoffgarside.co.uk/kqueue/files/kqerror.c to see the possible errors. I am not familiar with this concept, but maybe you can figure it out from what is there.

answered Mar 21 '14 at 11:55

Marichyasana

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Thanks, but this is only general information, similar to other resources like the manpage. Passing an empty eventlist, such as for one-time configuration which is aborted upon an invalid item error, is a specific use-case which avoids `EV_ERROR` entirely. – Potatoswatter Mar 21 '14 at 12:15

When and where might kevent return errors?

1 Answers1