haproxy/dev/gdb/post-mortem.gdb

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# This script will set the post_mortem struct pointer ($pm) from the one found
# in the "post_mortem" symbol. If not found or if not correct, it's the same
# address as the "_post_mortem" section, which can be found using "info files"
# or "objdump -h" on the executable. The guessed value is the by a first call
# to pm_init, but if not correct, you just need to call pm_init again with the
# correct pointer, e.g:
# pm_init 0xcfd400
define pm_init
set $pm = (struct post_mortem*)$arg0
set $g = $pm.global
set $ti = $pm.thread_info
set $tc = $pm.thread_ctx
set $tgi = $pm.tgroup_info
set $tgc = $pm.tgroup_ctx
set $fd = $pm.fdtab
set $pxh = *$pm.proxies
set $po = $pm.pools
set $ac = $pm.activity
end
# show basic info on the running process (OS, uid, etc)
define pm_show_info
print $pm->platform
print $pm->process
end
# show thread IDs to easily map between gdb threads and tid
define pm_show_threads
set $t = 0
while $t < $g.nbthread
printf "Tid %4d: pthread_id=%#lx stack_top=%#lx\n", $t, $ti[$t].pth_id, $ti[$t].stack_top
set $t = $t + 1
end
end
# dump all threads' dump buffers
define pm_show_thread_dump
set $t = 0
while $t < $g.nbthread
printf "%s\n", $tc[$t].thread_dump_buffer->area
set $t = $t + 1
end
end
# initialize the various pointers
pm_init &post_mortem