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Re: [PATCH] completing the data flow of tmp text base paths in commit

From: Greg Stein <gstein_at_gmail.com>
Date: Mon, 29 Mar 2010 19:20:29 -0400

On Mon, Mar 29, 2010 at 13:10, Julian Foad <julian.foad_at_wandisco.com> wrote:
> The attached patch is an attempt to close the gap between "transmit text
> deltas" and commit post-processing, by passing the temporary new text
> base file paths around.  It succeeds in that, at least it looks right
> and passes the test suite.

except for that printf() :-P

> The part of this patch that I haven't finished is with back-compat of
> svn_wc__process_committed_internal(), and what is the difference between
> its 'queue' parameter and its checksum/recurse/no_unlock/etc.
> parameters, being values which are alternatively available in the queue.
>
> svn_wc__process_committed_internal() is called by
> svn_wc_process_committed_queue2() which passes the 'queue' param, and
> also by the deprecated svn_wc_process_committed4() with QUEUE=NULL.  I
> had been assuming that if QUEUE==NULL then all the parameters that are
> available in the queue (checksum for one) are not available, but that's
> not how the back-compat wrapper wants to work.  I'll need to fix that.
> I think the right thing to do is to re-write the wrapper
> (svn_wc_process_committed4()) to construct a new queue with one item and
> pass that, and stop having the other parameters (checksum etc.) passed
> as separate parameters.  I'll look at that tomorrow.  I may already have
> committed changes that break that back-compat; I'll check.

I think the answer for above may be to call internal functions with a
single cqi, rather than a full queue. Would that work well?

I do agree that passing QUEUE==NULL is troublesome, given all the
checks in this patch.

> The internal recursion of svn_wc__process_committed_internal() is
> confusing me: it passes NO_UNLOCK=TRUE to itself when recursing,
> regardless of what no_unlock value was passed in or what is in the queue
> item.  Yet it passes the received value of KEEP_CHANGELIST.  For the
> NEW_DAV_CACHE and CHECKSUM arguments it passes NULL, which is half
> explained by them only having meaning in connection with a single node:
> the same ones cannot be applicable to a child node.

Right. I have no idea why the NO_UNLOCK=TRUE is present. I would
suggest a bit of archeology to try and determine the reason. The
cache/checksum as NULL are valid, tho I don't know how we *do* get a
valid checksum for those committed children (since we don't,
necessarily, transmit any text for them). We kinda need a checksum...

>...

Cheers,
-g
Received on 2010-03-30 01:20:54 CEST

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