On 2009-03-28 23:10:44 +0100, Robert Fraser <[email protected]> said:
Has anyone been able to get the backtrace hack working with the newest Tango?
Thanks,
Robert
The svn version of tango has some backtracing ability:
- windows: backtrace non optimized executables compiled with -g to get
function names and line numbers (thanks to h3)
- mac: backtrace executables, get nice names, but no line numbers
- linux: backtrace, get just the addresses, those can be resolved
through addr2line to have function and file/line number
The goal is to make it as memory friendly as possible (i.e. without
heap allocations, but also with limited stack usage, to use that in
fibers stacks that might be small), thus it is different from how it
used to be. This is especially true for the demangler (based on Hxal's
jive demangler).
Unfortunately the main obstacles toward having a good stacktrace on
linux are license problems: the main utilities/libraries are GPL, and
using them would make the whole tango GPL.
There are ways to avoid these problems, but require more coding, if
anybody wants to take a stab at it he is welcome, there is some
discussion in
http://www.dsource.org/projects/tango/ticket/1368
The support is still partial, but will hopefully improve
Fawzi
