[ros-users] SIGPIPE Conflict and Unmasking

Daniel Stonier d.stonier at gmail.com
Mon Apr 6 01:53:49 UTC 2015

On 6 April 2015 at 07:47, Neil T. Dantam via ros-users <
ros-users at lists.ros.org> wrote:

> Hello,
> I am trying to call roscpp within another program that uses SIGPIPE.
> ROS is blocking this (in ros::init() within
> clients/roscpp/src/libros/init.cpp it seems) and this breaks things.
> Why is SIGPIPE ignored here?  Presumably, this would be to prevent
> the default handler from terminating the process when a socket is
> disconnected.
> My current workaround is to unmask SIGPIPE after the ROS libraries are
> loaded.  This seems to be working fine in that I can communicate via
> ROS and the rest of the program can use SIGPIPE as it needs to.  Are
> there any potential subtle errors that could arise from this?
> Ideally, it seems that there should be an option to prevent roscpp
> from initially blocking SIGPIPE rather than it unconditionally
> modifying the process-global state.
ROS Answers <http://answers.ros.org/questions/> is a better place for these
questions. See if you can make it easier for responders too - direct link
to the code url where ros init is blocking for instance.

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