[Bug 41772] TP Logger: Introduce TplEventWalker

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=41772

--- Comment #9 from Nicolas Dufresne <nicolas.dufresne at collabora.co.uk> 2012-07-10 23:13:07 UTC ---
Maybe it's another crazy idea, but we could leave the caching to empathy by
having bidirectional iterator. Empathy would create two iterator (tailIt,
headIt). With headIt it would read a certain amount of information (the amount
it wants to be cached. The iterator would have a method to go forward or
backward without transfering the data. So if you want to go forward, you query
n element from headIt, and advance tailIt of same amount of event.

This could also serve an internal design, as this might be too complicated. The
Walker could be considered a cache, initialize with a cached size, and event
list being accessible uppon request.

I definitely need to think about it, Guillaume, what did we concluded initially
?

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