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This commit is contained in:
Marc Alexander Lehmann 2010-10-18 07:36:05 +00:00
parent eb05373c84
commit f2bb26988c
1 changed files with 3 additions and 1 deletions
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@ -441,7 +441,9 @@ I<different> file descriptors (even already closed ones, so one cannot
even remove them from the set) than registered in the set (especially
on SMP systems). Libev tries to counter these spurious notifications by
employing an additional generation counter and comparing that against the
events to filter out spurious ones, recreating the set when required.
events to filter out spurious ones, recreating the set when required. Last
not least, it also refuses to work with some file descriptors which work
perfectly fine with C<select> (files, many character devices...).
While stopping, setting and starting an I/O watcher in the same iteration
will result in some caching, there is still a system call per such