This does not seem to buy us much, for the same reason as the
previous change.  Dumb clients are still too dumb.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

We tried to compute pack interdependency information in
$GIT_DIR/objects/info/packs, hoping that dumb transports would
make use of it when choosing from multiple choice, but that has
never materialized, so stop computing D lines for now.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Store pointers to referenced objects in a variable sized array instead
of linked list.  This cuts down memory usage of utilities which use
object references; e.g., git-fsck-objects --full on the git.git
repository consumes about 2 MB of memory tracked by Massif instead of
7 MB before the change.  Object refs are still the biggest consumer of
memory (57%), but the malloc overhead for a single block instead of a
linked list is substantially smaller.
Signed-off-by: NSergey Vlasov <vsu@altlinux.ru>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

One caller of deref_tag() was not careful enough to make sure
what deref_tag() returned was not NULL (i.e. we found a tag
object that points at an object we do not have).  Fix it, and
warn about refs that point at such an incomplete tag where
needed.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This updates git-ls-remote to show SHA1 names of objects that are
referred by tags, in the "ref^{}" notation.

This would make git-findtags (without -t flag) almost trivial.

    git-peek-remote . |
    sed -ne "s:^$target	"'refs/tags/\(.*\)^{}$:\1:p'

Also Pasky could do:

    git-ls-remote --tags $remote |
    sed -ne 's:\(	refs/tags/.*\)^{}$:\1:p'

to find out what object each of the remote tags refers to, and
if he has one locally, run "git-fetch $remote tag $tagname" to
automatically catch up with the upstream tags.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Modify parse_object_cheap() to also free all the entries from the tree
data structures.
Signed-off-by: NRobert Fitzsimons <robfitz@273k.net>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

The code did not catch the case where you removed an existing ref
without changing anything else.  We are not talking about hundreds of
refs anyway, so remove that optimization.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

It was one of those things that were well intentioned but did not turn
out to be useful in practice.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This reverts 6c5f9baa commit, whose
change breaks gcc-2.95.

Not that I ignore portability to compilers that are properly C99, but
keeping compilation with GCC working is more important, at least for
now.  We would probably end up declaring with "name[1]" and teach the
allocator to subtract one if we really aimed for portability, but that
is left for later rounds.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

C99 denotes variable-sized members with [], not [0].
Signed-off-by: NJason Riedy <ejr@cs.berkeley.edu>

A few sparse warnings have crept in again since I checked last time:
undeclared variables with global scope.

Fix them by marking the private variables properly "static".
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Linux 2.6 tree has one of those tree tags.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols.  Currently, the
following files are produced.

 - The $repo/info/refs file lists the name of heads and tags
   available in the $repo/refs/ directory, along with their
   SHA1.  This can be used by git-ls-remote command running on
   the client side.

 - The $repo/info/rev-cache file describes the commit ancestry
   reachable from references in the $repo/refs/ directory.  This
   file is in an append-only binary format to make the server
   side friendly to rsync mirroring scheme, and can be read by
   git-show-rev-cache command.

 - The $repo/objects/info/pack file lists the name of the packs
   available, the interdependencies among them, and the head
   commits and tags contained in them.  Along with the other two
   files, this is designed to help clients to make smart pull
   decisions.

The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.

In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>