[lvm-devel] LVM2/scripts gdbinit
jbrassow at sourceware.org
jbrassow at sourceware.org
Wed Sep 28 16:32:23 UTC 2011
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: jbrassow at sourceware.org 2011-09-28 16:32:22
Modified files:
scripts : gdbinit
Log message:
New handy gdb debugging function, "dm_list_size"
Example:
(gdb) dm_list_size &split_images
1 list items
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/scripts/gdbinit.diff?cvsroot=lvm2&r1=1.10&r2=1.11
--- LVM2/scripts/gdbinit 2011/09/13 13:57:02 1.10
+++ LVM2/scripts/gdbinit 2011/09/28 16:32:22 1.11
@@ -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 "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 @@
# 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>
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