git/builtin/commit-graph.c, branch v2.19.2

commit-graph: not compatible with replace objects

2018-08-21T17:22:51Z

Create new method commit_graph_compatible(r) to check if a given repository r is compatible with the commit-graph feature. Fill the method with a check to see if replace-objects exist. Test this interaction succeeds, including ignoring an existing commit-graph and failing to write a new commit-graph. However, we do ensure that we write a new commit-graph by setting read_replace_refs to 0, thereby ignoring the replace refs. Signed-off-by: Derrick Stolee Signed-off-by: Junio C Hamano

commit-graph: add free_commit_graph

2018-07-17T22:47:48Z

Signed-off-by: Jonathan Tan Signed-off-by: Junio C Hamano

commit-graph: add '--reachable' option

2018-06-27T17:29:10Z

When writing commit-graph files, it can be convenient to ask for all reachable commits (starting at the ref set) in the resulting file. This is particularly helpful when writing to stdin is complicated, such as a future integration with 'git gc'. Signed-off-by: Derrick Stolee Signed-off-by: Junio C Hamano

commit-graph: use string-list API for input

2018-06-27T17:29:10Z

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

commit-graph: add 'verify' subcommand

2018-06-27T17:27:05Z

If the commit-graph file becomes corrupt, we need a way to verify that its contents match the object database. In the manner of 'git fsck' we will implement a 'git commit-graph verify' subcommand to report all issues with the file. Add the 'verify' subcommand to the 'commit-graph' builtin and its documentation. The subcommand is currently a no-op except for loading the commit-graph into memory, which may trigger run-time errors that would be caught by normal use. Add a simple test that ensures the command returns a zero error code. If no commit-graph file exists, this is an acceptable state. Do not report any errors. Helped-by: Ramsay Jones Signed-off-by: Derrick Stolee Signed-off-by: Junio C Hamano

commit-graph: UNLEAK before die()

2018-06-27T17:27:04Z

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

commit-graph: implement "--append" option

2018-04-11T01:43:02Z

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

2018-04-11T01:43:02Z

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

2018-04-11T01:43:02Z

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

2018-04-11T01:43:01Z

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