This repository contains a patched GDB (as a submodule), modified to be able to
inspect the stacks of seastar::thread and instructions on how to use it.
It is easiest to do an in-source build in the top-level diectory (./binutils).
After that it is possible to rebuild individual components (GDB).
Build-time dependencies (besides the ones installed by scylla.git/install-dependencies.sh) (Fedora package names):
- babeltrace
- texinfo
- flex
- bison
- bison-devel
As normal, but in addition you need to instruct GDB to use the data directory
which is produced by the same build (binutils/gdb/data-directory in case of an
in-source build). You can copy it to another location, as long as you tell GDB
to use it:
$ gdb --core=./mycore -D /path/to/data-directory /path/to/myexec
First, source seastar-gdb.py:
(gdb) source /path/to/seastar-gdb.py
To switch to a thread:
(gdb) seastar thread $my_seastar_thread_ctx