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, 3 insertions, 12 deletions

diff --git a/src/irmd/reg/name.h b/src/irmd/reg/name.h
index 297fb699..59d6d9bd 100644
--- a/src/irmd/reg/name.h
+++ b/src/irmd/reg/name.h
@@ -38,20 +38,11 @@ struct reg_name {
                 void * crt;
         } cache;
 
-        struct {
-                struct list_head list;
-                size_t           len;
-        } progs;  /* autostart programs for this name  */
+        struct llist progs;  /* autostart programs for this name  */
 
-        struct {
-                struct list_head list;
-                size_t           len;
-        } procs;  /* processes bound to this name      */
+        struct llist procs;  /* processes bound to this name      */
 
-        struct {
-                struct list_head list;
-                size_t           len;
-        } active; /* processes actively calling accept */
+        struct llist active; /* processes actively calling accept */
 };
 
 struct reg_name * reg_name_create(const struct name_info * info);