lib: Add struct llist for lists tracking len

The DHT uses a struct {struct list_head, size_t len} pattern, which is
also useful in the registry and other places. Having a struct llist
(defined in list.h) with consistent macros for addition/deletion etc
removes a lot of duplication and boilerplate and reduces the risk of
inconsistent updates.

The list management is now a macro-only implementation.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

1 files changed, 1 insertions, 2 deletions

diff --git a/src/irmd/reg/prog.h b/src/irmd/reg/prog.h
index 045711c8..e52b8e15 100644
--- a/src/irmd/reg/prog.h
+++ b/src/irmd/reg/prog.h
@@ -33,8 +33,7 @@ struct reg_prog {
 
         struct prog_info info;
 
-        struct list_head names;   /* names to listen for       */
-        size_t           n_names; /* number of names in list   */
+        struct llist     names;   /* names to listen for       */
  };
 
 struct reg_prog * reg_prog_create(const struct prog_info * info);