odb/source-inmemory: implement `count_objects()` callback

Implement the `count_objects()` callback function for the in-memory source. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Patrick Steinhardt committed Apr 10, 2026 at 14:12 UTC 27d219132afe13db43d9732caeb37a14c026e717
1 file changed +20
odb/source-inmemory.c
+20
@@ -207,6 +207,25 @@ static int odb_source_inmemory_find_abbrev_len(struct odb_source *source,
207 return ret;
208 }
209
210 +static int count_objects_cb(const struct object_id *oid UNUSED,
211 + struct object_info *oi UNUSED,
212 + void *cb_data)
213 +{
214 + unsigned long *counter = cb_data;
215 + (*counter)++;
216 + return 0;
217 +}
218 +
219 +static int odb_source_inmemory_count_objects(struct odb_source *source,
220 + enum odb_count_objects_flags flags UNUSED,
221 + unsigned long *out)
222 +{
223 + struct odb_for_each_object_options opts = { 0 };
224 + *out = 0;
225 + return odb_source_inmemory_for_each_object(source, NULL, count_objects_cb,
226 + out, &opts);
227 +}
228 +
229 static int odb_source_inmemory_write_object(struct odb_source *source,
230 const void *buf, unsigned long len,
231 enum object_type type,
@@ -314,6 +333,7 @@ struct odb_source_inmemory *odb_source_inmemory_new(struct object_database *odb)
333 source->base.read_object_stream = odb_source_inmemory_read_object_stream;
334 source->base.for_each_object = odb_source_inmemory_for_each_object;
335 source->base.find_abbrev_len = odb_source_inmemory_find_abbrev_len;
336 + source->base.count_objects = odb_source_inmemory_count_objects;
337 source->base.write_object = odb_source_inmemory_write_object;
338 source->base.write_object_stream = odb_source_inmemory_write_object_stream;
339