[Gluster-devel] Tips and Tricks for Gluster Developer

[Rajesh Joseph]

----- Original Message -----
> From: "Niels de Vos" <ndevos at redhat.com>
> To: "Rajesh Joseph" <rjoseph at redhat.com>
> Cc: "Richard Wareing" <rwareing at fb.com>, "Gluster Devel" <gluster-devel at gluster.org>
> Sent: Monday, January 25, 2016 6:30:53 PM
> Subject: Re: [Gluster-devel] Tips and Tricks for Gluster Developer
> 
> On Mon, Jan 25, 2016 at 06:41:50AM -0500, Rajesh Joseph wrote:
> > 
> > 
> > ----- Original Message -----
> > > From: "Richard Wareing" <rwareing at fb.com>
> > > To: "Raghavendra Talur" <rtalur at redhat.com>
> > > Cc: "Gluster Devel" <gluster-devel at gluster.org>
> > > Sent: Monday, January 25, 2016 8:12:53 AM
> > > Subject: Re: [Gluster-devel] Tips and Tricks for Gluster Developer
> > > 
> > > Here's my tips:
> > > 
> > > 1. General C tricks
> > > - learn to use vim or emacs & read their manuals; customize to suite your
> > > style
> > > - use vim w/ pathogen plugins for auto formatting (don't use tabs!) &
> > > syntax
> > > - use ctags to jump around functions
> > > - Use ASAN & valgrind to check for memory leaks and heap corruption
> > > - learn to use "git bisect" to quickly find where regressions were
> > > introduced
> > > & revert them
> > > - Use a window manager like tmux or screen
> > > 
> > > 2. Gluster specific tricks
> > > - Alias "ggrep" to grep through all Gluster source files for some string
> > > and
> > > show you the line numbers
> > > - Alias "gvim" or "gemacs" to open any source file without full path, eg.
> > > "gvim afr.c"
> > > - GFS specific gdb macros to dump out pretty formatting of various
> > > structs
> > > (Jeff Darcy has some of these IIRC)
> > 
> > I also use few macros for printing dictionary and walking through the list
> > structures.
> > I think it would be good to collect these macros, scripts and tool in a
> > common place
> > so that people can use them. Can we include them in "extras/dev" directory
> > under Gluster source tree?
> 
> Yes, but please call it "extras/devel-tools" or something descriptive
> like that. "extras/dev" sounds like some device under /dev :)

Yes, sure :-)

> 
> Thanks,
> Niels
> 
> 
> > 
> > > - Write prove tests...for everything you write, and any bug you fix.
> > > Make
> > > them deterministic (timing/races shouldn't matter).
> > > - Bugs/races and/or crashes which are hard or impossible to repro often
> > > require the creation of a developer specific feature to simulate the
> > > failure
> > > and efficiently code/test a fix.  Example: "monkey-unlocking" in the lock
> > > revocation patch I just posted.
> > > - That edge case you are ignoring because you think it's
> > > impossible/unlikely?
> > > We will find/hit it in 48hrs at large scale (seriously we will)
> > > ....handle
> > > it correctly or at a minimum write a (kernel style) "OOPS" log type
> > > message.
> > > 
> > > That's all I have off the top of my head.  I'll give example aliases in
> > > another reply.
> > > 
> > > Richard
> > > 
> > > Sent from my iPhone
> > > 
> > > > On Jan 22, 2016, at 6:14 AM, Raghavendra Talur <rtalur at redhat.com>
> > > > wrote:
> > > > 
> > > > HI All,
> > > > 
> > > > I am sure there are many tricks hidden under sleeves of many Gluster
> > > > developers.
> > > > I realized this when speaking to new developers. It would be good have
> > > > a
> > > > searchable thread of such tricks.
> > > > 
> > > > Just reply back on this thread with the tricks that you have and I
> > > > promise
> > > > I will collate them and add them to developer guide.
> > > > 
> > > > 
> > > > Looking forward to be amazed!
> > > > 
> > > > Thanks,
> > > > Raghavendra Talur
> > > > 
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