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, 2 insertions, 2 deletions

diff --git a/src/irmd/reg/tests/prog_test.c b/src/irmd/reg/tests/prog_test.c
index 9c40de92..91264aba 100644
--- a/src/irmd/reg/tests/prog_test.c
+++ b/src/irmd/reg/tests/prog_test.c
@@ -73,7 +73,7 @@ static int test_reg_prog_add_name(void)
                 goto fail;
         }
 
-        if (prog->n_names != 1) {
+        if (prog->names.len != 1) {
                 printf("n_names not updated.\n");
                 goto fail;
         }
@@ -85,7 +85,7 @@ static int test_reg_prog_add_name(void)
 
         reg_prog_del_name(prog, name);
 
-        if (prog->n_names != 0) {
+        if (!llist_is_empty(&prog->names)) {
                 printf("n_names not updated.\n");
                 goto fail;
         }