diff options
| author | Derrick Stolee <dstolee@microsoft.com> | 2018-04-06 22:09:32 +0300 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2018-04-11 04:47:16 +0300 |
| commit | 891435d55da80ca3654b19834481205be6bdfe33 (patch) | |
| tree | fddc1768c14c6567f7be5205bf808d8bae86981a /revision.c | |
| parent | 2d5792f0716605ff0059fe4b5c865d6821c0161e (diff) | |
treewide: rename tree to maybe_tree
Using the commit-graph file to walk commit history removes the large
cost of parsing commits during the walk. This exposes a performance
issue: lookup_tree() takes a large portion of the computation time,
even when Git never uses those trees.
In anticipation of lazy-loading these trees, rename the 'tree' member
of struct commit to 'maybe_tree'. This serves two purposes: it hints
at the future role of possibly being NULL even if the commit has a
valid tree, and it allows for unambiguous transformation from simple
member access (i.e. commit->maybe_tree) to method access.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'revision.c')
| -rw-r--r-- | revision.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/revision.c b/revision.c index 5c1cb7277c..f61d1c9307 100644 --- a/revision.c +++ b/revision.c @@ -439,8 +439,8 @@ static void file_change(struct diff_options *options, static int rev_compare_tree(struct rev_info *revs, struct commit *parent, struct commit *commit) { - struct tree *t1 = parent->tree; - struct tree *t2 = commit->tree; + struct tree *t1 = parent->maybe_tree; + struct tree *t2 = commit->maybe_tree; if (!t1) return REV_TREE_NEW; @@ -476,7 +476,7 @@ static int rev_compare_tree(struct rev_info *revs, static int rev_same_tree_as_empty(struct rev_info *revs, struct commit *commit) { int retval; - struct tree *t1 = commit->tree; + struct tree *t1 = commit->maybe_tree; if (!t1) return 0; @@ -614,7 +614,7 @@ static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit) if (!revs->prune) return; - if (!commit->tree) + if (!commit->maybe_tree) return; if (!commit->parents) { |