[ET Trac] [Einstein Toolkit] #443: Output a stack backtrace on a fatal error in a simulation

[Einstein Toolkit]

#443: Output a stack backtrace on a fatal error in a simulation
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 Reporter:  hinder       |       Owner:  eschnett
     Type:  enhancement  |      Status:  new     
 Priority:  major        |   Milestone:          
Component:  Carpet       |     Version:          
 Keywords:               |  
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 When a Cactus simulation aborts with a signal, it is often difficult to
 determine which part of the code led to the problem.  The attached patch
 registers a signal handler on Carpet startup for signals 11 and 6
 (segmentation fault and abort, e.g. from assert()) which outputs a stack
 backtrace from each process to a file, including demangling symbol names.
 It uses some low-level and possibly unofficial APIs, and is likely not
 completely portable.  However, I have tested it on Mac OS (gcc) and Linux
 (intel) and it works in those places.

 Part of this code was contributed by Justin Luitjens at the Carpet
 developers' workshop in summer 2010.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/443>
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