Thread (1 message) 1 message, 1 author, 2012-08-16

[Bug 20762] epoll_wait(2): upper limit to timeout

From: <hidden>
Date: 2012-08-16 09:33:31

https://bugzilla.kernel.org/show_bug.cgi?id=20762


Michael Kerrisk [off-list ref] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
         Resolution|                            |CODE_FIX



--- Comment #1 from Michael Kerrisk <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2012-08-16 09:33:31 ---
I aplied the following patch:
--- a/man2/epoll_wait.2
+++ b/man2/epoll_wait.2
@@ -198,6 +198,18 @@ If the new file descriptor becomes ready,
 it will cause the
 .BR epoll_wait ()
 call to unblock.
+.SH BUGS
+In kernels before 2.6.37, a
+.I timeout
+value larger than approximately
+.I LONG_MAX / HZ
+milliseconds is treated as \-1 (i.e., infinity).
+Thus, for example, on a system where the
+.I sizeof(long)
+is 4 and the kernel
+.I HZ
+value is 1000,
+this means that timeouts greater than 35.79 minutes are treated as infinity.
 .SH "SEE ALSO"
 .BR epoll_create (2),
 .BR epoll_ctl (2),
-- 
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