Re: QGit: Shrink used memory with custom git log format

Hi,

On Tue, 27 Nov 2007, Jan Hudec wrote:

On Tue, Nov 27, 2007 at 10:48:00 +0000, Johannes Schindelin wrote:

quoted

On Mon, 26 Nov 2007, Shawn O. Pearce wrote:

quoted

[...]
Otherwise I think what you really want here is a libgit that you can
link into your process and that can efficiently inflate an object
on demand for you.  Like the work Luiz was working on this past
summer for GSOC.  Lots of downsides to that current tree though...
like die() kills the GUI...

But then, die() calls die_routine, which you can override.  And C++ has 
this funny exception mechanism which just begs to be used here.  The only 
thing you need to add is a way to flush all singletons like the object 
array.

Unfortunately, exceptions won't really work. Why? Because to use 
exceptions, you need to have an exception-safe code. That is the code 
needs to free any allocated resources when it's aborted by exception. 
And git code is not exceptions safe. Given the lack of destructors in C, 
it means registering all resource allocation in some kind of pool, so 
they can be freed en masse in case of failure. Than you can also use 
longjmp for die (for C they really behave the same).

Sorry, I just assumed that you can read my mind (or alternatively remember 
what I suggested a few months ago, namely to "override" xmalloc(), 
xcalloc(), xrealloc() and xfree() (probably you need to create the 
latter)).

Ciao,
Dscho