From 82cb78d84c7962d2b55e1f83c9f8cbcbef386d87 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Tue, 2 Nov 1999 21:45:15 +0000
Subject: Split core message queue and watchdog handler objects into separate
 files.

---
 c/src/exec/score/src/watchdogadjust.c | 63 +++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 c/src/exec/score/src/watchdogadjust.c

(limited to 'c/src/exec/score/src/watchdogadjust.c')

diff --git a/c/src/exec/score/src/watchdogadjust.c b/c/src/exec/score/src/watchdogadjust.c
new file mode 100644
index 0000000000..83322c11e3
--- /dev/null
+++ b/c/src/exec/score/src/watchdogadjust.c
@@ -0,0 +1,63 @@
+/*
+ *  Watchdog 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 the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <rtems/system.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/watchdog.h>
+
+/*PAGE
+ *
+ *  _Watchdog_Adjust
+ *
+ *  This routine adjusts the delta chain backward or forward in response
+ *  to a time change.
+ *
+ *  Input parameters:
+ *    header    - pointer to the delta chain to be adjusted
+ *    direction - forward or backward adjustment to delta chain
+ *    units     - units to adjust
+ *
+ *  Output parameters:
+ */
+
+void _Watchdog_Adjust(
+  Chain_Control               *header,
+  Watchdog_Adjust_directions   direction,
+  Watchdog_Interval            units
+)
+{
+  if ( !_Chain_Is_empty( header ) ) {
+    switch ( direction ) {
+      case WATCHDOG_BACKWARD:
+        _Watchdog_First( header )->delta_interval += units;
+        break;
+      case WATCHDOG_FORWARD:
+        while ( units ) {
+          if ( units < _Watchdog_First( header )->delta_interval ) {
+            _Watchdog_First( header )->delta_interval -= units;
+            break;
+          } else {
+            units -= _Watchdog_First( header )->delta_interval;
+            _Watchdog_First( header )->delta_interval = 1;
+            _Watchdog_Tickle( header );
+            if ( _Chain_Is_empty( header ) )
+              break;
+          }
+        }
+        break;
+    }
+  }
+}
+
-- 
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