From: Taylor Blau <me@xxxxxxxxxxxx>
Use the just-introduced compute_reachable_generation_numbers_1() to
implement a function which dynamically computes topological levels (or
corrected commit dates) for out-of-graph commits.
This will be useful for the ahead-behind algorithm we are about to
introduce, which needs accurate topological levels on _all_ commits
reachable from the tips in order to avoid over-counting.
Co-authored-by: Derrick Stolee <derrickstolee@xxxxxxxxxx>
Signed-off-by: Taylor Blau <me@xxxxxxxxxxxx>
Signed-off-by: Derrick Stolee <derrickstolee@xxxxxxxxxx>
---
commit-graph.c | 29 +++++++++++++++++++++++++++++
commit-graph.h | 8 ++++++++
2 files changed, 37 insertions(+)
diff --git a/commit-graph.c b/commit-graph.c
index b4da4e05067..0df8d27afc8 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -1609,6 +1609,35 @@ static void compute_generation_numbers(struct write_commit_graph_context *ctx)
stop_progress(&ctx->progress);
}
+static void set_generation_in_graph_data(struct commit *c, timestamp_t t,
+ void *data)
+{
+ commit_graph_data_at(c)->generation = t;
+}
+
+/*
+ * After this method, all commits reachable from those in the given
+ * list will have non-zero, non-infinite generation numbers.
+ */
+void ensure_generations_valid(struct repository *r,
+ struct commit **commits, size_t nr)
+{
+ int generation_version = get_configured_generation_version(r);
+ struct packed_commit_list list = {
+ .list = commits,
+ .alloc = nr,
+ .nr = nr,
+ };
+ struct compute_generation_info info = {
+ .r = r,
+ .commits = &list,
+ .get_generation = get_generation_from_graph_data,
+ .set_generation = set_generation_in_graph_data,
+ };
+
+ compute_reachable_generation_numbers_1(&info, generation_version);
+}
+
static void trace2_bloom_filter_write_statistics(struct write_commit_graph_context *ctx)
{
trace2_data_intmax("commit-graph", ctx->r, "filter-computed",
diff --git a/commit-graph.h b/commit-graph.h
index 37faee6b66d..73e182ab2d0 100644
--- a/commit-graph.h
+++ b/commit-graph.h
@@ -190,4 +190,12 @@ struct commit_graph_data {
*/
timestamp_t commit_graph_generation(const struct commit *);
uint32_t commit_graph_position(const struct commit *);
+
+/*
+ * After this method, all commits reachable from those in the given
+ * list will have non-zero, non-infinite generation numbers.
+ */
+void ensure_generations_valid(struct repository *r,
+ struct commit **commits, size_t nr);
+
#endif
--
gitgitgadget
