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Re: Feature request/ideas


From: Derek Price
Subject: Re: Feature request/ideas
Date: Mon, 28 Feb 2005 15:37:53 -0500
User-agent: Mozilla Thunderbird 1.0 (Windows/20041206)

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Frank Hemer wrote:

|>> | If tags with '@' at the begining are used they're added in
|>> the | cvsnt way (I remember I wrote cvsnt wouldn't cache them
|>> but I was | wrong). If the .commitid is used, they're cached as
|>>  | '.commitid.xxx', but this could be changed as you suggested.
|>>
|>>
|>> I think this would be a good idea, as otherwise the search of
|>> val-tags will be run once for each possible form of the
|>> commitid.
|
|
| Comming back on this issue: In tag.c::tag_check_valid() there is a
| consistency check for symbolic tags before adding the tag to
| val-tags. Because this consistency-check now properly identifies
| the commitid tag, it usually would never be added to val-tags, and
| I don't see any other place where val-tags is accessed. So I would
| assume not adding to val-tags makes no difference if the
| tag_check_valid() is never called for the commitid, even better, it
| saves some performance? Do I miss sth.?


The commitid algorithm should be the same as for other tags, here:

~   1. When tag is created, add it to val-tags (in the case of
~      commitids, tag_check_valid(..., true) will be called somewhere
~      in commit.c).
~   2. In tag_check_valid():
~         1. Check if tag exists in val-tags.  If it does return true.
~         2. Check if tag exists in RCS files in the repository.  If
~            not, return false.
~         3. Add the tag to val-tags.
~         4. Return true.


Note that when the final flag to tag_check_valid() is true,
tag_check_valid() skips step 2 (the recursive repository check) and
jumps to adding the tag to val-tags.

Regards,

Derek
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