delta/git.git/builtin, branch ds/commit-graph

SQUASH??? sparse fixes

2018-03-14T21:44:38+00:00

commit-graph: implement "--additive" option

2018-03-14T21:01:36+00:00

Teach git-commit-graph to add all commits from the existing
commit-graph file to the file about to be written. This should be
used when adding new commits without performing garbage collection.

Signed-off-by: Derrick Stolee 
Signed-off-by: Junio C Hamano

commit-graph: build graph from starting commits

2018-03-14T21:01:27+00:00

Teach git-commit-graph to read commits from stdin when the
--stdin-commits flag is specified. Commits reachable from these
commits are added to the graph. This is a much faster way to construct
the graph than inspecting all packed objects, but is restricted to
known tips.

For the Linux repository, 700,000+ commits were added to the graph
file starting from 'master' in 7-9 seconds, depending on the number
of packfiles in the repo (1, 24, or 120).

Signed-off-by: Derrick Stolee 
Signed-off-by: Junio C Hamano

commit-graph: read only from specific pack-indexes

2018-03-14T20:58:15+00:00

Teach git-commit-graph to inspect the objects only in a certain list
of pack-indexes within the given pack directory. This allows updating
the commit graph iteratively.

Signed-off-by: Derrick Stolee 
Signed-off-by: Junio C Hamano

commit-graph: implement git commit-graph read

2018-03-14T20:58:14+00:00

Teach git-commit-graph to read commit graph files and summarize their contents.

Use the read subcommand to verify the contents of a commit graph file in the
tests.

Signed-off-by: Derrick Stolee 
Signed-off-by: Junio C Hamano

commit-graph: implement 'git-commit-graph write'

2018-03-14T20:58:14+00:00

Teach git-commit-graph to write graph files. Create new test script to verify
this command succeeds without failure.

Signed-off-by: Derrick Stolee 
Signed-off-by: Junio C Hamano

commit-graph: create git-commit-graph builtin

2018-03-14T20:58:14+00:00

Teach git the 'commit-graph' builtin that will be used for writing and
reading packed graph files. The current implementation is mostly
empty, except for an '--object-dir' option.

Signed-off-by: Derrick Stolee 
Signed-off-by: Junio C Hamano

csum-file: refactor finalize_hashfile() method

2018-03-14T20:58:14+00:00

If we want to use a hashfile on the temporary file for a lockfile, then
we need finalize_hashfile() to fully write the trailing hash but also keep
the file descriptor open.

Do this by adding a new CSUM_HASH_IN_STREAM flag along with a functional
change that checks this flag before writing the checksum to the stream.
This differs from previous behavior since it would be written if either
CSUM_CLOSE or CSUM_FSYNC is provided.

Signed-off-by: Derrick Stolee 
Signed-off-by: Junio C Hamano

csum-file: rename hashclose() to finalize_hashfile()

2018-03-14T20:58:14+00:00

The hashclose() method behaves very differently depending on the flags
parameter. In particular, the file descriptor is not always closed.

Perform a simple rename of "hashclose()" to "finalize_hashfile()" in
preparation for functional changes.

Signed-off-by: Derrick Stolee 
Signed-off-by: Junio C Hamano

Merge branch 'jk/cached-commit-buffer' into HEAD

2018-03-13T20:35:25+00:00

* jk/cached-commit-buffer:
  revision: drop --show-all option
  commit: drop uses of get_cached_commit_buffer()
  Git 2.16.2