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commit-graph: implement "--append" option

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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 <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee
2018-04-10 08:56:08 -04:00
committed by Junio C Hamano
parent 3d5df01b5e
commit 7547b95b4f
5 changed files with 45 additions and 5 deletions
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17
commit-graph.c
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@ -553,7 +553,8 @@ void write_commit_graph(const char *obj_dir,
const char **pack_indexes,
int nr_packs,
const char **commit_hex,
int nr_commits)
int nr_commits,
int append)
{
struct packed_oid_list oids;
struct packed_commit_list commits;
@ -571,10 +572,24 @@ void write_commit_graph(const char *obj_dir,
oids.nr = 0;
oids.alloc = approximate_object_count() / 4;
if (append) {
prepare_commit_graph_one(obj_dir);
if (commit_graph)
oids.alloc += commit_graph->num_commits;
}
if (oids.alloc < 1024)
oids.alloc = 1024;
ALLOC_ARRAY(oids.list, oids.alloc);
if (append && commit_graph) {
for (i = 0; i < commit_graph->num_commits; i++) {
const unsigned char *hash = commit_graph->chunk_oid_lookup +
commit_graph->hash_len * i;
hashcpy(oids.list[oids.nr++].hash, hash);
}
}
if (pack_indexes) {
struct strbuf packname = STRBUF_INIT;
int dirlen;