https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246366
Bug ID: 246366
Summary: Unclear and/or wrong kevent vs EINTR manual
Product: Documentation
Version: Latest
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: Manual Pages
Assignee: b...@freebsd.org
Reporter: a...@playground.ru
CC: d...@freebsd.org
man kevent(2) says:
> Cancellation can only occur before any changes are made to the kqueue, or
> when the call was blocked and no changes to the queue were requested.
and
> [EINTR] A cancellation request was delivered to the thread, but not yet
> handled.
> When kevent() call fails with EINTR error, all changes in the changelist have
> been applied.
I think that both these statements can't be true at the same time, because the
first says that kevent() can be cancelled BEFORE changes are made, and the
second says that changes are always applied when EINTR that could be result of
cancellation.
Another possibility is that this manpage is just very unclear about EINTR
behaviour.
I don't know what case is right one but I'm sure that there is something wrong
here.
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