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, 6 insertions, 1 deletions

diff --git a/lib/libpthread/thread/thr_sigpending.c b/lib/libpthread/thread/thr_sigpending.c
index 5b3c02f..7f42ff3 100644
--- a/lib/libpthread/thread/thr_sigpending.c
+++ b/lib/libpthread/thread/thr_sigpending.c
@@ -45,6 +45,7 @@ int
 _sigpending(sigset_t *set)
 {
 	struct pthread *curthread = _get_curthread();
+	kse_critical_t crit;
 	int ret = 0;
 
 	/* Check for a null signal set pointer: */
@@ -54,7 +55,11 @@ _sigpending(sigset_t *set)
 	}
 	else {
 		*set = curthread->sigpend;
-		SIGSETOR(*set, _thread_sigpending);
+		crit = _kse_critical_enter();
+		KSE_LOCK_ACQUIRE(curthread->kse, &_thread_signal_lock);
+		SIGSETOR(*set, _thr_proc_sigpending);
+		KSE_LOCK_RELEASE(curthread->kse, &_thread_signal_lock);
+		_kse_critical_leave(crit);
 	}
 	/* Return the completion status: */
 	return (ret);