Merge branch 'jk/oidmap-cleanup'

Code cleanup.

* jk/oidmap-cleanup:
  raw_object_store: drop extra pointer to replace_map
  oidmap: add size function
  oidmap: rename oidmap_free() to oidmap_clear()

builtin/rev-list.c

@@ -924,7 +924,7 @@ int cmd_rev_list(int argc,
 			free((void *)entry->path);
 		}
 
-		oidmap_free(&missing_objects, true);
+		oidmap_clear(&missing_objects, true);
 	}
 
 	stop_progress(&progress);

commit-graph.c

@@ -222,7 +222,7 @@ static int commit_graph_compatible(struct repository *r)
 
 	if (replace_refs_enabled(r)) {
 		prepare_replace_object(r);
-		if (hashmap_get_size(&r->objects->replace_map->map))
+		if (oidmap_get_size(&r->objects->replace_map))
 			return 0;
 	}
 

list-objects-filter.c

@@ -244,7 +244,7 @@ static void filter_trees_free(void *filter_data) {
 	struct filter_trees_depth_data *d = filter_data;
 	if (!d)
 		return;
-	oidmap_free(&d->seen_at_depth, 1);
+	oidmap_clear(&d->seen_at_depth, 1);
 	free(d);
 }
 

object-store.c

@@ -987,8 +987,7 @@ void raw_object_store_clear(struct raw_object_store *o)
 {
 	FREE_AND_NULL(o->alternate_db);
 
-	oidmap_free(o->replace_map, 1);
-	FREE_AND_NULL(o->replace_map);
+	oidmap_clear(&o->replace_map, 1);
 	pthread_mutex_destroy(&o->replace_mutex);
 
 	free_commit_graph(o->commit_graph);

object-store.h

@@ -5,6 +5,7 @@
 #include "object.h"
 #include "list.h"
 #include "oidset.h"
+#include "oidmap.h"
 #include "thread-utils.h"
 
 struct oidmap;
@@ -109,7 +110,7 @@ struct raw_object_store {
 	 * Objects that should be substituted by other objects
 	 * (see git-replace(1)).
 	 */
-	struct oidmap *replace_map;
+	struct oidmap replace_map;
 	unsigned replace_map_initialized : 1;
 	pthread_mutex_t replace_mutex; /* protect object replace functions */
 

oidmap.c

@@ -22,7 +22,7 @@ void oidmap_init(struct oidmap *map, size_t initial_size)
 	hashmap_init(&map->map, oidmap_neq, NULL, initial_size);
 }
 
-void oidmap_free(struct oidmap *map, int free_entries)
+void oidmap_clear(struct oidmap *map, int free_entries)
 {
 	if (!map)
 		return;

oidmap.h

@@ -36,12 +36,13 @@ struct oidmap {
 void oidmap_init(struct oidmap *map, size_t initial_size);
 
 /*
- * Frees an oidmap structure and allocated memory.
+ * Clear an oidmap, freeing any allocated memory. The map is empty and
+ * can be reused without another explicit init.
  *
  * If `free_entries` is true, each oidmap_entry in the map is freed as well
  * using stdlibs free().
  */
-void oidmap_free(struct oidmap *map, int free_entries);
+void oidmap_clear(struct oidmap *map, int free_entries);
 
 /*
  * Returns the oidmap entry for the specified oid, or NULL if not found.
@@ -66,6 +67,10 @@ void *oidmap_put(struct oidmap *map, void *entry);
  */
 void *oidmap_remove(struct oidmap *map, const struct object_id *key);
 
+static inline unsigned int oidmap_get_size(struct oidmap *map)
+{
+	return hashmap_get_size(&map->map);
+}
 
 struct oidmap_iter {
 	struct hashmap_iter h_iter;

replace-object.c

@@ -31,7 +31,7 @@ static int register_replace_ref(const char *refname,
 	oidcpy(&repl_obj->replacement, oid);
 
 	/* Register new object */
-	if (oidmap_put(r->objects->replace_map, repl_obj))
+	if (oidmap_put(&r->objects->replace_map, repl_obj))
 		die(_("duplicate replace ref: %s"), refname);
 
 	return 0;
@@ -48,9 +48,7 @@ void prepare_replace_object(struct repository *r)
 		return;
 	}
 
-	r->objects->replace_map =
-		xmalloc(sizeof(*r->objects->replace_map));
-	oidmap_init(r->objects->replace_map, 0);
+	oidmap_init(&r->objects->replace_map, 0);
 
 	refs_for_each_replace_ref(get_main_ref_store(r),
 				  register_replace_ref, r);
@@ -80,7 +78,7 @@ const struct object_id *do_lookup_replace_object(struct repository *r,
 	/* Try to recursively replace the object */
 	while (depth-- > 0) {
 		struct replace_object *repl_obj =
-			oidmap_get(r->objects->replace_map, cur);
+			oidmap_get(&r->objects->replace_map, cur);
 		if (!repl_obj)
 			return cur;
 		cur = &repl_obj->replacement;

replace-object.h

@@ -47,7 +47,7 @@ static inline const struct object_id *lookup_replace_object(struct repository *r
 {
 	if (!replace_refs_enabled(r) ||
 	    (r->objects->replace_map_initialized &&
-	     r->objects->replace_map->map.tablesize == 0))
+	     oidmap_get_size(&r->objects->replace_map) == 0))
 		return oid;
 	return do_lookup_replace_object(r, oid);
 }

sequencer.c

@@ -6051,8 +6051,8 @@ static int make_script_with_merges(struct pretty_print_context *pp,
 	oidset_clear(&interesting);
 	oidset_clear(&child_seen);
 	oidset_clear(&shown);
-	oidmap_free(&commit2todo, 1);
-	oidmap_free(&state.commit2label, 1);
+	oidmap_clear(&commit2todo, 1);
+	oidmap_clear(&state.commit2label, 1);
 	hashmap_clear_and_free(&state.labels, struct labels_entry, entry);
 	strbuf_release(&state.buf);
 

t/unit-tests/u-oidmap.c

@@ -35,7 +35,7 @@ void test_oidmap__initialize(void)
 
 void test_oidmap__cleanup(void)
 {
-	oidmap_free(&map, 1);
+	oidmap_clear(&map, 1);
 }
 
 void test_oidmap__replace(void)