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List of possible exit codes from Roslaunch

asked 2011-08-30 06:01:49 -0500

Chad Rockey

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So I've been seeing exit codes come out of roslaunch, example:

[process name] process has died [pid 1234, exit code -11].

I have seen mostly negative exit codes. Are these signals/bash exit codes? -11 appears to be a Seg Fault. What's -6?

Is there a chart of the possible values it could send out and does it send out user exit codes as well?

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answered 2011-08-30 08:32:17 -0500

Brian Gerkey
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updated 2011-08-30 08:33:53 -0500

By convention, a negative exit code corresponds to the number of the signal that caused the process to die. E.g., -11 is SIGSEGV, and -6 is SIGABRT. For a list of signals, have a look at /usr/include/bits/signum.h (at least on my Ubuntu Lucid system, that's where they're defined).

Btw, this behavior and the meaning of the numbers isn't specific to roslaunch; roslaunch is just reporting back the exit code that the process gave when it died.