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authorJoel Sherrill <joel.sherrill@OARcorp.com>1999-11-02 21:45:15 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1999-11-02 21:45:15 +0000
commit82cb78d84c7962d2b55e1f83c9f8cbcbef386d87 (patch)
treebae0b9595689a38992ffcc4bad8ddfea285fc16b /c/src/exec/score/src/watchdogtickle.c
parentSplit Heap and Time of Day Handlers. (diff)
downloadrtems-82cb78d84c7962d2b55e1f83c9f8cbcbef386d87.tar.bz2
Split core message queue and watchdog handler objects into separate files.
Diffstat (limited to 'c/src/exec/score/src/watchdogtickle.c')
-rw-r--r--c/src/exec/score/src/watchdogtickle.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/c/src/exec/score/src/watchdogtickle.c b/c/src/exec/score/src/watchdogtickle.c
new file mode 100644
index 0000000000..e50c8de43e
--- /dev/null
+++ b/c/src/exec/score/src/watchdogtickle.c
@@ -0,0 +1,78 @@
+/*
+ * 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_Tickle
+ *
+ * This routine decrements the delta counter in response to a tick. The
+ * delta chain is updated accordingly.
+ *
+ * Input parameters:
+ * header - pointer to the delta chain to be tickled
+ *
+ * Output parameters: NONE
+ */
+
+void _Watchdog_Tickle(
+ Chain_Control *header
+)
+{
+ Watchdog_Control *the_watchdog;
+
+ if ( _Chain_Is_empty( header ) )
+ return;
+
+ the_watchdog = _Watchdog_First( header );
+ the_watchdog->delta_interval--;
+ if ( the_watchdog->delta_interval != 0 )
+ return;
+
+ do {
+ switch( _Watchdog_Remove( the_watchdog ) ) {
+ case WATCHDOG_ACTIVE:
+ (*the_watchdog->routine)(
+ the_watchdog->id,
+ the_watchdog->user_data
+ );
+ break;
+
+ case WATCHDOG_INACTIVE:
+ /*
+ * This state indicates that the watchdog is not on any chain.
+ * Thus, it is NOT on a chain being tickled. This case should
+ * never occur.
+ */
+ break;
+
+ case WATCHDOG_BEING_INSERTED:
+ /*
+ * This state indicates that the watchdog is in the process of
+ * BEING inserted on the chain. Thus, it can NOT be on a chain
+ * being tickled. This case should never occur.
+ */
+ break;
+
+ case WATCHDOG_REMOVE_IT:
+ break;
+ }
+ the_watchdog = _Watchdog_First( header );
+ } while ( !_Chain_Is_empty( header ) &&
+ (the_watchdog->delta_interval == 0) );
+}