-- make rcu wait when its buffer gets full, instead of crashing
-- fix makefile to compute dependency info as a side-effect of compilation (-MF)
++ fix makefile to compute dependency lists as a side-effect of compilation (-MF)
++ support integer keys for ht
++ optimize tracing code, still too much overhead
++ use NULL instead of a sentinal node in skiplist and list
++ make the interfaces for all data structures consistent
++ make list and skiplist use string keys
++ optimize integer keys
++ ht_print()
++ iterators
++ 32 bit x86 support
+
+memory manangement
+------------------
+- allow threads to dynamically enter and exit rcu's token ring
+- augment rcu with heartbeat manager to kill stalled threads
+- make rcu try yielding when its buffer gets full
+- alternate memory reclamation schemes: hazard pointers and/or reference counting
+- seperate nbd_malloc/nbd_free into general purpose malloc/free replacement
+
+quality
+-------
+- verify the key memory management in list, skiplist, and hashtable
+- transaction tests
+- port perf tests from lib-high-scale
+- characterize the performance of hashtable vs. skiplist vs. list
+- validate function arguments in interface functions
+- document usage of the library
+- document algorithms
+
+optimization
+------------