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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-04-05 18:25:49 +0200
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-04-05 18:25:49 +0200
commit5a813456fb029ffae0e4ea839fc2524e39c31b21 (patch)
treea3ec542d2308f711181ae9138d664fd13c150007 /libpthread/nptl/TODO
parent06e4fe64bbd01f16ee84da161b8e1a61e73b4cdb (diff)
nptl: remove useless text files
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-- we should probably extend pthread_mutexattr_t with a field to create a
- single linked list of all instances. This requires changing the
- pthread_mutexattr_* functions.
-
-
-- a new attribute for mutexes: number of times we spin before calling
-sys_futex
-
-- for adaptive mutexes: when releasing, determine whether somebody spins.
-If yes, for a short time release lock. If someone else locks no wakeup
-syscall needed.
-
-
-
-- test with threaded process terminating and semadj (?) being applied
- only after all threads are gone
-
-
-
-- semaphore changes:
-
- - sem_post should only wake one thread and only when the state of
- the semaphore changed from 0 to 1
-
- this also requires that sem_wait and sem_timedwait don't drop the
- post if they get canceled.
-
- - possibly add counter field. This requires reviving the
- differences between old and new semaphose funtions. The old ones
- stay as they are now. The new once can use an additional field
- wich is the counter for the number of waiters