1 files changed, 82 insertions, 0 deletions
diff --git a/cpukit/score/src/threadclearstate.c b/cpukit/score/src/threadclearstate.c
new file mode 100644
index 0000000000..67e9d2df8b
--- /dev/null
+++ b/cpukit/score/src/threadclearstate.c
@@ -0,0 +1,82 @@
+/*
+ *  Thread Handler
+ *
+ *
+ *  COPYRIGHT (c) 1989-1998.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <rtems/system.h>
+#include <rtems/score/apiext.h>
+#include <rtems/score/context.h>
+#include <rtems/score/interr.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/object.h>
+#include <rtems/score/priority.h>
+#include <rtems/score/states.h>
+#include <rtems/score/sysstate.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/threadq.h>
+#include <rtems/score/userext.h>
+#include <rtems/score/wkspace.h>
+
+/*PAGE
+ *
+ *  _Thread_Clear_state
+ *
+ *  This kernel routine clears the appropriate states in the
+ *  requested thread.  The thread ready chain is adjusted if
+ *  necessary and the Heir thread is set accordingly.
+ *
+ *  Input parameters:
+ *    the_thread - pointer to thread control block
+ *    state      - state set to clear
+ *
+ *  Output parameters:  NONE
+ *
+ *  INTERRUPT LATENCY:
+ *    priority map
+ *    select heir
+ */
+
+
+void _Thread_Clear_state(
+  Thread_Control *the_thread,
+  States_Control  state
+)
+{
+  ISR_Level       level;
+  States_Control  current_state;
+
+  _ISR_Disable( level );
+    current_state = the_thread->current_state;
+    
+    if ( current_state & state ) {
+      current_state = 
+      the_thread->current_state = _States_Clear( state, current_state );
+
+      if ( _States_Is_ready( current_state ) ) {
+
+        _Priority_Add_to_bit_map( &the_thread->Priority_map );
+
+        _Chain_Append_unprotected(the_thread->ready, &the_thread->Object.Node);
+
+        _ISR_Flash( level );
+
+        if ( the_thread->current_priority < _Thread_Heir->current_priority ) {
+          _Thread_Heir = the_thread;
+          if ( _Thread_Executing->is_preemptible ||
+               the_thread->current_priority == 0 )
+            _Context_Switch_necessary = TRUE;
+        }
+      }
+  }
+  _ISR_Enable( level );
+}