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New handy gdb debugging function, "dm_list_size"

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Example:
(gdb) dm_list_size &split_images
1 list items
This commit is contained in:
Jonathan Earl Brassow 2011-09-28 16:32:22 +00:00
parent 10d0d9c7c4
commit 9aedb1431f
1 changed files with 21 additions and 2 deletions
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23
scripts/gdbinit
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@ -16,6 +16,7 @@
printf "\n\n"
printf "Loading commands:\n"
printf " - dm_list_size <list ptr>\n"
printf " - first_seg <LV ptr>\n"
printf " - lv_status <LV ptr>\n"
printf " - lv_status_r <LV ptr>\n"
@ -27,8 +28,8 @@ printf " - \n"
printf "Use 'help <command>' for more info\n"
printf "\n\n"
printf "Popular breakpoints:\n"
printf "break _raid_add_images\n"
printf "run --type raid1 -m 1 vg/lv\n"
printf "break _get_udev_flags\n"
printf "run --splitmirrors 1 -n split vg/lv\n"
printf "\n\n"
set follow-fork-mode child
@ -40,6 +41,24 @@ set follow-fork-mode child
# External functions should have a corresponding 'document'
# section. Internal functions should have leading comments
define dm_list_size
set $_DLS_list_head = (struct dm_list *)$arg0
set $_DLS_list = $_DLS_list_head->n
set $_DLS_size = 0
while (($_DLS_list != $_DLS_list_head) && ($_DLS_size < 100))
set $_DLS_list = $_DLS_list->n
set $_DLS_size++
end
printf "%d list items\n", $_DLS_size
end
document dm_list_size
Returns the number of elements in the dm_list
Usage: dm_list_size <list ptr>
end
#
# __first_seg <return> <LV>