-void write_commit_graph_reachable(const char *obj_dir, int append,
- int report_progress);
-void write_commit_graph(const char *obj_dir,
- struct string_list *pack_indexes,
- struct string_list *commit_hex,
- int append, int report_progress);
+enum commit_graph_write_flags {
+ COMMIT_GRAPH_WRITE_APPEND = (1 << 0),
+ COMMIT_GRAPH_WRITE_PROGRESS = (1 << 1),
+ COMMIT_GRAPH_WRITE_SPLIT = (1 << 2),
+ /* Make sure that each OID in the input is a valid commit OID. */
+ COMMIT_GRAPH_WRITE_CHECK_OIDS = (1 << 3)
+};
+
+struct split_commit_graph_opts {
+ int size_multiple;
+ int max_commits;
+ timestamp_t expire_time;
+};
+
+/*
+ * The write_commit_graph* methods return zero on success
+ * and a negative value on failure. Note that if the repository
+ * is not compatible with the commit-graph feature, then the
+ * methods will return 0 without writing a commit-graph.
+ */
+int write_commit_graph_reachable(const char *obj_dir,
+ enum commit_graph_write_flags flags,
+ const struct split_commit_graph_opts *split_opts);
+int write_commit_graph(const char *obj_dir,
+ struct string_list *pack_indexes,
+ struct string_list *commit_hex,
+ enum commit_graph_write_flags flags,
+ const struct split_commit_graph_opts *split_opts);
+
+#define COMMIT_GRAPH_VERIFY_SHALLOW (1 << 0)