PERFORCE change 56957 for review

[David Xu]

http://perforce.freebsd.org/chv.cgi?CH=56957

Change 56957 by davidxu at davidxu_alona on 2004/07/10 13:53:47

	Check TDF_DBSUSPEND flag in thread_suspend_check(), the flag
	is set by debugger when it wants to suspend the thread.

Affected files ...

.. //depot/projects/davidxu_ksedbg/src/sys/kern/kern_thread.c#3 edit

Differences ...

==== //depot/projects/davidxu_ksedbg/src/sys/kern/kern_thread.c#3 (text+ko) ====

@@ -870,6 +870,8 @@
 			td2->td_flags |= TDF_ASTPENDING;
 			if (TD_IS_INHIBITED(td2)) {
 				if (force_exit == SINGLE_EXIT) {
+					if (td->td_flags & TDF_DBSUSPEND)
+						td->td_flags &= ~TDF_DBSUSPEND;
 					if (TD_IS_SUSPENDED(td2)) {
 						thread_unsuspend_one(td2);
 					}
@@ -969,7 +971,8 @@
 	p = td->td_proc;
 	mtx_assert(&Giant, MA_NOTOWNED);
 	PROC_LOCK_ASSERT(p, MA_OWNED);
-	while (P_SHOULDSTOP(p)) {
+	while (P_SHOULDSTOP(p) ||
+	      ((p->p_flag & P_TRACED) && (td->td_flags & TDF_DBSUSPEND))) {
 		if (P_SHOULDSTOP(p) == P_STOPPED_SINGLE) {
 			KASSERT(p->p_singlethread != NULL,
 			    ("singlethread not set"));