2007-03-28 Chris Johns <chrisj@rtems.org>

	* rtems/Makefile.am, rtems/include/rtems/rtems/clock.h,
	score/include/rtems/score/watchdog.h: Add support for a handler to
	obtain the number of nanoseconds since the last clock tick. The
	primary interface for this is rtems_clock_set_nanoseconds_extension.
	Subsequent commits from Joel will redo the TOD support to use this
	capability.
	* rtems/src/clocksetnsecshandler.c: New file.

1 files changed, 16 insertions, 1 deletions

diff --git a/cpukit/score/include/rtems/score/watchdog.h b/cpukit/score/include/rtems/score/watchdog.h
index fc902ad8c7..2432d4d801 100644
--- a/cpukit/score/include/rtems/score/watchdog.h
+++ b/cpukit/score/include/rtems/score/watchdog.h
@@ -7,7 +7,7 @@
  */
 
 /*
- *  COPYRIGHT (c) 1989-2006.
+ *  COPYRIGHT (c) 1989-2007.
  *  On-Line Applications Research Corporation (OAR).
  *
  *  The license and distribution terms for this file may be
@@ -50,6 +50,13 @@ extern "C" {
  */
 typedef uint32_t   Watchdog_Interval;
 
+/** @brief Watchdog Nanoseconds Since Last Tick Extension
+ *
+ *  This type defines a pointer to the BSP plugin to obtain the number
+ *  of nanoseconds since the last clock tick.
+ */
+typedef uint32_t (*Watchdog_Nanoseconds_since_last_tick_routine)(void);
+
 /** @brief Watchdog Service Routine Return Type
  * 
  *  This type defines the return type from a Watchdog Service Routine.
@@ -158,6 +165,14 @@ SCORE_EXTERN volatile uint32_t    _Watchdog_Sync_count;
 
 SCORE_EXTERN volatile Watchdog_Interval _Watchdog_Ticks_since_boot;
 
+/** @brief Watchdog Nanoseconds Since Last Tick Handler
+ *
+ *  This is a pointer to the optional BSP plugin to obtain the number
+ *  of nanoseconds since the last clock tick.
+ */
+SCORE_EXTERN Watchdog_Nanoseconds_since_last_tick_routine
+    _Watchdog_Nanoseconds_since_tick_handler;
+
 /** @brief Per Ticks Watchdog List
  *
  *  This is the watchdog chain which is managed at ticks.