Revamp suspend and resume. While I'm here add pthread_suspend_all_np()

and pthread_resume_all_np().  These suspend and resume all threads except
the current thread, respectively.  The existing functions pthread_single_np()
and pthread_multi_np(), which formerly had no effect, now exhibit the same
behaviour and pthread_suspend_all_np() and pthread_resume_all_np().  These
functions have been added mostly for the native java port.

Don't allow the uthread kernel pipe to use the same descriptors as
stdio.  Mostily submitted by Oswald Buddenhagen <ossi@kde.org>.

Correct some minor style nits.

1 files changed, 7 insertions, 5 deletions

diff --git a/lib/libpthread/thread/thr_single_np.c b/lib/libpthread/thread/thr_single_np.c
index 85471b8..1ee5e79 100644
--- a/lib/libpthread/thread/thr_single_np.c
+++ b/lib/libpthread/thread/thr_single_np.c
@@ -31,17 +31,19 @@
  *
  * $FreeBSD$
  */
-#include <string.h>
 #include <pthread.h>
-#include "pthread_private.h"
+#include <pthread_np.h>
 
 __weak_reference(_pthread_single_np, pthread_single_np);
 
 int _pthread_single_np()
 {
-	struct pthread	*curthread = _get_curthread();
 
 	/* Enter single-threaded (non-POSIX) scheduling mode: */
-	_thread_single = curthread;
-	return(0);
+	pthread_suspend_all_np();
+	/*
+	 * XXX - Do we want to do this?
+	 * __is_threaded = 0;
+	 */
+	return (0);
 }