bug fix in deinit

[palacios.git] / palacios / src / geekos / kthread.c

diff --git a/palacios/src/geekos/kthread.c b/palacios/src/geekos/kthread.c
index 9b614d2..6ecb30f 100644 (file)
--- a/palacios/src/geekos/kthread.c
+++ b/palacios/src/geekos/kthread.c
@@ -1,7 +1,7 @@
 /*
  * Kernel threads
  * Copyright (c) 2001,2003 David H. Hovemeyer <daveho@cs.umd.edu>
- * $Revision: 1.2 $
+ * $Revision: 1.4 $
  * 
  * This is free software.  You are permitted to use,
  * redistribute, and modify it as specified in the file "COPYING".
@@ -560,6 +560,8 @@ void Schedule(void)
      * will "return", and then Schedule() will return to wherever
      * it was called from.
      */
+
+    //SerialPrint("Switch_To_Thread() in Schedule()\n");
     Switch_To_Thread(runnable);
 }
 
@@ -746,6 +748,30 @@ void Wake_Up_One(struct Thread_Queue* waitQueue)
     }
 }
 
+
+
+/*
+ * Wake up a single thread waiting on given wait queue
+ * (if there are any threads waiting).  Chooses the highest priority thread.
+ * Interrupts must be disabled!
+ */
+void Wake_Up_Thread(struct Thread_Queue* waitQueue, int pid)
+{
+  struct Kernel_Thread* thread = Lookup_Thread(pid);;
+
+  KASSERT(!Interrupts_Enabled());
+  
+  
+  if (thread != 0) {
+    Remove_Thread(waitQueue, thread);
+    Make_Runnable(thread);
+       /*Print("Wake_Up_One: waking up %x from %x\n", best, g_currentThread); */
+  }
+}
+
+
+
+
 /*
  * Allocate a key for accessing thread-local data.
  */