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Debugging Octave: Difference between revisions
→Helpful gdb commands: Mention Octave-specific gdb macros
(→Helpful gdb commands: Add "thread apply all bt") |
(→Helpful gdb commands: Mention Octave-specific gdb macros) |
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=== Helpful gdb commands === | === Helpful gdb commands === | ||
[http://www.gnu.org/software/gdb/documentation gdb documentation] | [http://www.gnu.org/software/gdb/documentation gdb documentation] | ||
The following command shows the back trace of all threads belonging to the Octave process: | |||
<syntaxhighlight lang="bash"> | |||
(gdb) thread apply all bt | |||
</syntaxhighlight> | |||
For debugging octave_value variables (e.g. <code>my_octave_value</code>) to find out what the variable actually is (instead of just it's base class): | For debugging octave_value variables (e.g. <code>my_octave_value</code>) to find out what the variable actually is (instead of just it's base class): | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
(gdb) print *(my_octave_value.rep) | (gdb) print *(my_octave_value.rep) | ||
</syntaxhighlight> | </syntaxhighlight> | ||
The | The file <code>etc/gdbinit</code> in the Octave repository contains some macros that can be helpful: | ||
< | * <code>display-dims DIM_VECTOR</code>: Display the contents of an Octave dimension vector. | ||
* <code>display-dense-array ARRAY</code>: Display the contents of an ordinary, i.e., dense Octave array. | |||
</ | * <code>display-sparse-array SPARSE_ARRAY</code>: Display the contents of a sparse Octave array. | ||
* <code>show-octave-dbstack</code>: Display the contents of the current Octave debugging stack. | |||
== ddd == | == ddd == | ||