Revamp libpthread so that it has a chance of working in an SMP

environment.  This includes support for multiple KSEs and KSEGs.

The ability to create more than 1 KSE via pthread_setconcurrency()
is in the works as well as support for PTHREAD_SCOPE_SYSTEM threads.
Those should come shortly.

There are still some known issues which davidxu and I are working
on, but it'll make it easier for us by committing what we have.

This library now passes all of the ACE tests that libc_r passes
with the exception of one.  It also seems to work OK with KDE
including konqueror, kwrite, etc.  I haven't been able to get
mozilla to run due to lack of java plugin, so I'd be interested
to see how it works with that.

Reviewed by:	davidxu

1 files changed, 2 insertions, 20 deletions

diff --git a/lib/libpthread/thread/thr_switch_np.c b/lib/libpthread/thread/thr_switch_np.c
index 45c289e..b70ce70 100644
--- a/lib/libpthread/thread/thr_switch_np.c
+++ b/lib/libpthread/thread/thr_switch_np.c
@@ -43,29 +43,11 @@ __weak_reference(_pthread_switch_delete_np, pthread_switch_delete_np);
 int
 _pthread_switch_add_np(pthread_switch_routine_t routine)
 {
-	int ret = 0;
-
-	if (routine == NULL)
-		/* Return an invalid argument error: */
-		ret = EINVAL;
-	else
-		/* Shouldn't need a lock to protect this assigment. */
-		_sched_switch_hook = routine;
-
-	return(ret);
+	return (ENOTSUP);
 }
 
 int
 _pthread_switch_delete_np(pthread_switch_routine_t routine)
 {
-	int ret = 0;
-
-	if (routine != _sched_switch_hook)
-		/* Return an invalid argument error: */
-		ret = EINVAL;
-	else
-		/* Shouldn't need a lock to protect this assigment. */
-		_sched_switch_hook = NULL;
-
-	return(ret);
+	return (ENOTSUP);
 }