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From: David Xu <davidxu@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Subject: PERFORCE change 59065 for review
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http://perforce.freebsd.org/chv.cgi?CH=59065

Change 59065 by davidxu@davidxu_alona on 2004/08/07 04:43:38

	suspend system scope thread after leaving critical region.

Affected files ...

.. //depot/projects/davidxu_ksedbg/src/lib/libpthread/thread/thr_kern.c#9 edit

Differences ...

==== //depot/projects/davidxu_ksedbg/src/lib/libpthread/thread/thr_kern.c#9 (text+ko) ====

@@ -937,8 +937,7 @@
 	}
 
 	/*
-	 * No current thread anymore, calling _get_curthread in UTS
-	 * should dump core
+	 * No current thread anymore
 	 */
 	_tcb_set(curkse->k_kcb, NULL);
 
@@ -2541,7 +2540,11 @@
 	 * is cleared by debugger, the flag will be cleared in next
 	 * suspension event. 
 	 */
-	if ((curthread->attr.flags & PTHREAD_SCOPE_SYSTEM) == 0 &&
-	    !DBG_CAN_RUN(curthread))
-		_thr_sched_switch(curthread);
+	if (!DBG_CAN_RUN(curthread)) {
+		if ((curthread->attr.flags & PTHREAD_SCOPE_SYSTEM) == 0)
+			_thr_sched_switch(curthread);
+		else
+			kse_thr_interrupt(&curthread->tcb->tcb_tmbx,
+				KSE_INTR_DBSUSPEND, 0);
+	}
 }