1$NetBSD: TODO,v 1.11 2007/09/08 23:00:31 ad Exp $ 2 3Bugs to fix: 4 5- Add locking to ld.elf_so so that multiple threads doing lazy binding 6 doesn't trash things. 7 8Interfaces/features to implement: 9 10- Realtime exensions: priority scheduling, priority inheritance. 11 12- Figure out how to use registers reserved in the ABI to implement 13 pthread_self(). This will allow for assembly lock stubs. 14 15- Allow threads to change their stack size. This probably depends on the 16 above item. 17 18- Have a user/kernel shared page that: 19 20 o Has a hint mechanism that gives us a clue about whether an LWP is 21 currently running on another CPU. This could be used for adaptive locks, 22 but would need to be cheap to do in-kernel. 23 24 o Perhaps has a flag value that's reset when a detached LWP is into the 25 kernel and lwp_exit1(), meaning that its stack can be reclaimed. Again, 26 may or may not be worth it. Currently we test for this with _lwp_kill() 27 which is very inefficient. 28 29- Keep a pool of dead LWPs so that we do not have take the full hit of 30 _lwp_create() every time pthread_create() is called. 31