get_ahead_behind

Description:

public void get_ahead_behind (OId local, OId upstream, out size_t ahead, out size_t behind) throws Error

Count the number of unique commits between two commit objects.

There is no need for branches containing the commits to have any upstream relationship, but it helps to think of one as a branch and the other as its upstream, the ahead and behind values will be what git would report for the branches.

Parameters:

this	a Repository.
local	the commit for local.
upstream	the commit for upstream.
ahead	number of unique from commits in `upstream`.
behind	number of unique from commits in `local`.