Archive for the ‘suse’ Category
I wrote a small article for a internal magazine and few of my friends wanted me to post it to this blog.
This is for people who are new to GDB and still exploring itz features. So if you’ve used GDB for more than few weeks please ignore and skip 🙂
GDB – Scripting
A good majority of novice programmers tend to use printf functions to trace function calls and to printout the debug data. This forces you to change the code and compile again and again. To eliminate these superfluous tasks from your day-to-day work, use GDB. The GDB has facilities for scripting and helps in saving plenty of your time.
Tracing Function Calls
If you want to know whether a function is called or not, create a break point and write a simple script.
#Set the breakpoint
(gdb) b mapi_sync
Breakpoint 1 at 0x7fffd75f36e2: file camel-mapi-folder.c, line 741
#Tell GDB what to do when the breakpoint is reached
Type commands for when breakpoint 1 is hit, one per line.
End with a line saying just “end”.
continue – Come out of break and continue
end – terminate command list
Run the program now. The GDB prints the function name when the breakpoint is hit and automatically continues running the program.
Breakpoint 1, mapi_sync (folder=0xc9c1a0, expunge=0, ex=0xf3a0c0) at camel-mapi-folder.c:741
741 CamelMapiStore *mapi_store = CAMEL_MAPI_STORE (folder->parent_store);
Using the GDB Scripts for Analyzing the Data
Suppose that you have a singly-linked list that has strings in it. At some point, you might want to know the contents of the list. To do this, use the GDB scripting instead of adding the debug statements in your code.
#Example for gslist traversal.
set $list = ($arg0)
while ((GSList *)$list->next != 0)
p (char *)(GSList *)$list->data
set $list = (GSList *)$list->next
p_gslist_str <list>: Dumps the strings in a GSList
Add the above snippet into a file and load it into the GDB as follows:
(gdb) source /home/jjohnny/scripts/gdb/gslist.gdb
Now, anywhere you want to take a look in the GSList, simply break and
(gdb) p_gslist_str server_uid_list
$17 = 0x7fffd81101b0 “7666BC1E000000015870BD1E00000001”
$18 = 0x7fffd810e330 “7666BC1E000000015970BD1E00000001”
$19 = 0x7fffd810cbe0 “7666BC1E000000015C70BD1E00000001”
Simple scripts thus can save you a lot of time from adding or removing the debugging statements from your code. Now go ahead and create a suite of scripts to aid the library you are writing.
More cool developer tricks later. Have fun !
— End —
Thanks to Radhika for editing the article.
Woohoo ! After a long delays and issues (in the last few days) I’ve managed to install openSUSE 11.1 in my PS3. Running a full blown desktop is very sluggish. Reminds me of my first computer (amdk6 500mhz). Some screenies :
Now onto get the Cell SDK running … Synergetic Processing Elements (SPE) here i come !
I’ve written (incomplete) simple plugin for Evolution which provides a combo box + menu for switching folders. Now you can hide the sidebar. This really helps in freeing up some space in your screen and can have good vertical view layout. This would help computers with smaller screen size.
To try out this plugin / For more information : http://www.johnnyjacob.org/makespace.html .
One other feature that I would like to have is simple folder bookmarks. Bookmarked folders would appear in the top of the menu (You don’t have to navigate all the way down in the menus)
Let me know what you think and if you would like to have any features put it down in the comments. 🙂
We have started the tarball releases for evolution-mapi. It’ll be in sync with GNOME release schedule. evolution-mapi-0.25.3 is available for download .
Thanks to Suman , openSUSE repositories  are back online.
Matthew has repositories for Fedora  
Development is more active after our move to new svn ! Julien (of openchange.org) has patched evolution-mapi to be compatible with libmapi 0.8 .Patches are welcome 🙂 !
Some of the cool things with libmapi 0.8 is the possibility of having multiple exchange accounts (multiple sessions) in Evolution (Yep. you read that right! ). But they will hit the trunk little later .
Now more focus is on real world testing on servers other than few test servers we are running. What doesn’t work in different setups is something we would like to know and fix them all ! Thanks to those who have been reporting issues and TIA 🙂
+ evolution-mapi is proposed for GNOME 2.26. Yay !
+ Wiki page is updated with information on building evolution-mapi .