void prepare_replace_object(struct repository *r)
{
- if (r->objects->replace_map)
+ if (r->objects->replace_map_initialized)
return;
+ pthread_mutex_lock(&r->objects->replace_mutex);
+ if (r->objects->replace_map_initialized) {
+ pthread_mutex_unlock(&r->objects->replace_mutex);
+ return;
+ }
+
r->objects->replace_map =
xmalloc(sizeof(*r->objects->replace_map));
oidmap_init(r->objects->replace_map, 0);
for_each_replace_ref(r, register_replace_ref, NULL);
+ r->objects->replace_map_initialized = 1;
+
+ pthread_mutex_unlock(&r->objects->replace_mutex);
}
/* We allow "recursive" replacement. Only within reason, though */