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Bug #409
openDetection of pipe close with POLLHUP poll(3) event
Start date:
12/10/2012
Due date:
% Done:
0%
Estimated time:
Description
On Linux, the POLLHUP poll(3) event is used to signal that the other end
of a pipe has been disconnected. Due to poor wording in the Single UNIX
Specification, differents UNIX implementation signal the EOF with
conflicting poll events [1].
The current implementation of pipe close detection in lttng-tools uses
the POLLHUP event. This could lead to infinite looping in threads on
platforms such as OpenBSD/Cygwin.
Possible workaround in 060a32b279132ceeeef14b96a611077195a2ca46.
Creating this issue so we don't forget this limitation if we want eventually
want to support those platforms.
Updated by Christian Babeux about 12 years ago
- Project changed from LTTng to LTTng-tools
Updated by David Goulet almost 12 years ago
- Status changed from New to Confirmed
When clearly supporting OpenBSD, we should make sure we fix that. I'll keep this open so to remind us at that point.
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