use NULL instead of a sentinal node in skiplist and list

[nbds] / todo

diff --git a/todo b/todo
index ab8c0db4bca300fbedcd8a5e6e4a9af0a1c0dc88..805a9a55a7ecf8fb09054db3a9e2e409df02ba68 100644 (file)
--- a/todo
+++ b/todo
@@ -2,4 +2,6 @@
 - fix makefile to compute dependency info as a side-effect of compilation (-MF)
 - investigate 16 byte CAS; ht can store GUIDs inline instead of pointers to actual keys 
 - test ht
-- optimize tracing code, still too much overhead
++ optimize tracing code, still too much overhead
++ use NULL instead of a sentinal node in skiplist and list
+- make interfaces for all data structures consistent