o Don't add a scope system thread's KSE to the list of available

  KSEs when it's thread exits; allow the GC handler to do that.

o Make spinlock/spinlock critical regions.

The following were submitted by davidxu

  o Alow thr_switch() to take a null mailbox argument.

  o Better protect cancellation checks.

  o Don't set KSE specific data when creating new KSEs; rely on the
    first upcall of the KSE to set it.

  o Add the ability to set the maximum concurrency level and do this
    automatically.  We should have a way to enable/disable this with
    some sort of tunable because some applications may not want this
    to be the default.

  o Hold the scheduling lock across thread switch calls.

  o If scheduling of a thread fails, make sure to remove it from the list
    of active threads.

  o Better protect accesses to a joining threads when the target thread is
    exited and detached.

  o Remove some macro definitions that are now provided by <sys/kse.h>.

  o Don't leave the library in threaded mode if creation of the initial
    KSE fails.

  o Wakeup idle KSEs when there are threads ready to run.

  o Maintain the number of threads active in the priority queue.

1 files changed, 2 insertions, 3 deletions

diff --git a/lib/libpthread/thread/thr_sigwait.c b/lib/libpthread/thread/thr_sigwait.c
index b955251..7b5a31f 100644
--- a/lib/libpthread/thread/thr_sigwait.c
+++ b/lib/libpthread/thread/thr_sigwait.c
@@ -134,11 +134,10 @@ _sigwait(const sigset_t *set, int *sig)
 		curthread->data.sigwait = &waitset;
 
 		/* Wait for a signal: */
-		THR_SCHED_LOCK(curthread, curthread);
+		THR_LOCK_SWITCH(curthread);
 		THR_SET_STATE(curthread, PS_SIGWAIT);
-		THR_SCHED_UNLOCK(curthread, curthread);
 		_thr_sched_switch(curthread);
-
+		THR_UNLOCK_SWITCH(curthread);
 		/* Return the signal number to the caller: */
 		*sig = curthread->signo;