[p4] view code from multiple branches
steve at vance.com
Mon Aug 3 07:07:11 PDT 2009
You may want to look at Sandy Currier's p5 tools to support sparse
branches. I think you can get them from his web site at releng.com. It
can be done manually, as well, but it's not the most natural workflow in
What is your motivation for wanting sparse branches?
Generally, the reasons for wanting sparse branches in Perforce are a)
wanting a workflow similar to that of another SCM system, b) avoidance
of merging, or c) a large code base with a large user community and an
aggressive branching model.
For a), you just need to recognize that different SCM systems do things
different ways and most of them are correct and consistent models, but
few of them support all workflows. Changing tools often requires
changing workflows. The Perforce model is full branching and the
overhead for a branch is pretty light. Unless you fall in to the
category described in (c), don't fight the tool.
For b), I can only say that Perforce has excellent merging support and
that you will create more problems trying to avoid merging than you
would save. Define a planned branch strategy rather than letting it
happen in an uncontrolled manner and make sure people have the right
For c), you may need to make some extra efforts to keep your db sizes in
check. Tools like the p5 tool set and planning for product and project
componentization to facilitate more local branching will take you a long
way. Very few organizations fall into this category, however.
Kamlesh Mutha wrote:
> Hi All,
> Can someone please let me know if the following is possible in perforce and
> 1. I have a branch //depot/main/...
> 2. I fork off a new branch //depot/itr/... from //depot/main
> 3. I want to have a workspace in which I should be able to see following
> a. All files modified on //depot/itr branch
> b. For a file which is not modified on //depot/itr/..., the
> latest revision from //ars/main/... branch.
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