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authorRajesh Joseph <rjoseph@redhat.com>2016-01-25 01:33:48 +0530
committerRaghavendra Talur <rtalur@redhat.com>2016-02-01 23:43:46 -0800
commit959785a885528f66c56e744641c71d1e7e2fadc8 (patch)
tree8218e6cb56e5800ebf6c8e05acfec9ce069217b8 /extras/devel-tools
parent4267c14e1be513b6124ef0dca75029494844f711 (diff)
extras/devel-tool: Added gdb_macros for debugging
provided following functions in the script 1) print dictionary (dict_t) items 2) print list members (only address) Change-Id: I5befb2dcdbf258ab3001ff25212a5862b9cc5321 Signed-off-by: Rajesh Joseph <rjoseph@redhat.com> Reviewed-on: http://review.gluster.org/13289 Smoke: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra Talur <rtalur@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Diffstat (limited to 'extras/devel-tools')
-rw-r--r--extras/devel-tools/gdb_macros84
1 files changed, 84 insertions, 0 deletions
diff --git a/extras/devel-tools/gdb_macros b/extras/devel-tools/gdb_macros
new file mode 100644
index 00000000000..aae4ccb3b37
--- /dev/null
+++ b/extras/devel-tools/gdb_macros
@@ -0,0 +1,84 @@
+
+#
+# gdb_macros is a gdb script file which can assist
+# developer in debugging. This script provides
+# following functions for debugging gluster processes
+# effectively:
+#
+# pdict : This function will iterate through all the
+# dictionary (dict_t) members and print the
+# key-value pair.
+#
+# plist : This function will print address of each member
+# of gluster list (list_head).
+#
+# gdb script should be loaded in gdb before using these
+# functions. gdb script can be loaded on-demand or on gdb
+# start-up. Use the following command on gdb prompt for
+# loading it on-demand.
+# source <script filename>
+# e.g.
+# (gdb) source /mnt/gdb_macros
+#
+# To automatically load gdb script on startup use .gdbinit
+# file. This file is automatically loaded by gdb on start.
+# Edit (or create) ~/.gdbinit file and add the following
+# entry:
+# source /mnt/gdb_macros
+#
+
+
+
+# This is an internal helper function
+define _print_dict_data
+ set $data = ($arg0)
+ set $len = $data->len - 1
+ set $i = 0
+ set $ishex = 0
+ while ($i < $len)
+ set $ch = $data->data [$i]
+
+ # Print only alpha-numeric values as char
+ # and remaining as hex value. This is done
+ # in this way because using %s screws up
+ # the display if the string has non-displayable
+ # characters
+ if ($ishex == 0) && ($ch > 31) && ($ch < 127)
+ printf "%c", $ch
+ else
+ printf "%x", ($ch & 0xFF)
+ set $ishex = 1
+ end
+ set $i = $i + 1
+ end
+end
+
+
+define pdict
+ set $cnt = 1
+ set $temp = *($arg0->members)
+ while ($temp)
+ printf "[%d](%s::",$cnt, $temp->key
+ _print_dict_data ($temp)->value
+ printf ")\n"
+ set $temp = $temp->next
+ set $cnt = $cnt + 1
+ end
+ printf "Done\n"
+end
+
+
+define plist
+ set $node = &($arg0)
+ set $head = $node
+
+ printf "[0x%lx]", $node
+ set $node = $node->next
+
+ while ($node != $head)
+ printf "--> [0x%lx]", $node
+ set $node = $node->next
+ end
+ printf "\n"
+end
+