From 1d2fc9b3c59d0e83e04139ddf633731264b76ea2 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 5 Jan 2000 02:09:12 +0000 Subject: Redesigned how cancellation unblocks a thread from internal cancellation points (sem_wait, pthread_join, pthread_cond_{wait,timedwait}). Cancellation won't eat a signal in any of these functions (*required* by POSIX and Single Unix Spec!). 2000-01-03 Kaz Kylheku Redesigned how cancellation unblocks a thread from internal cancellation points (sem_wait, pthread_join, pthread_cond_{wait,timedwait}). Cancellation won't eat a signal in any of these functions (*required* by POSIX and Single Unix Spec!). * condvar.c: spontaneous wakeup on pthread_cond_timedwait won't eat a simultaneous condition variable signal (not required by POSIX or Single Unix Spec, but nice). * spinlock.c: __pthread_lock queues back any received restarts that don't belong to it instead of assuming ownership of lock upon any restart; fastlock can no longer be acquired by two threads simultaneously. * restart.h: restarts queue even on kernels that don't have queued real time signals (2.0, early 2.1), thanks to atomic counter, avoiding a rare race condition in pthread_cond_timedwait. --- linuxthreads/ChangeLog | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'linuxthreads/ChangeLog') diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index 37be0e829f..78e8552a6f 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,3 +1,21 @@ +2000-01-03 Kaz Kylheku + + Redesigned how cancellation unblocks a thread from internal + cancellation points (sem_wait, pthread_join, + pthread_cond_{wait,timedwait}). + Cancellation won't eat a signal in any of these functions + (*required* by POSIX and Single Unix Spec!). + * condvar.c: spontaneous wakeup on pthread_cond_timedwait won't eat a + simultaneous condition variable signal (not required by POSIX + or Single Unix Spec, but nice). + * spinlock.c: __pthread_lock queues back any received restarts + that don't belong to it instead of assuming ownership of lock + upon any restart; fastlock can no longer be acquired by two threads + simultaneously. + * restart.h: restarts queue even on kernels that don't have + queued real time signals (2.0, early 2.1), thanks to atomic counter, + avoiding a rare race condition in pthread_cond_timedwait. + 1999-12-31 Andreas Jaeger * internals.h: Remove duplicate prototype declarations. -- cgit v1.2.3