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-rw-r--r--cpukit/score/include/rtems/score/watchdog.h166
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diff --git a/cpukit/score/include/rtems/score/watchdog.h b/cpukit/score/include/rtems/score/watchdog.h
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-/**
- * @file rtems/score/watchdog.h
- *
- * @brief Constants and Structures Associated with Watchdog Timers
- *
- * This include file contains all the constants and structures associated
- * with watchdog timers. This Handler provides mechanisms which can be
- * used to initialize and manipulate watchdog timers.
- */
-
-/*
- * COPYRIGHT (c) 1989-2009.
- * On-Line Applications Research Corporation (OAR).
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-#ifndef _RTEMS_SCORE_WATCHDOG_H
-#define _RTEMS_SCORE_WATCHDOG_H
-
-#include <rtems/score/basedefs.h>
-#include <rtems/score/chain.h>
-#include <rtems/score/rbtree.h>
-
-struct Per_CPU_Control;
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * @defgroup ScoreWatchdog Watchdog Handler
- *
- * @ingroup Score
- *
- * This handler encapsulates functionality related to the scheduling of
- * watchdog functions to be called at specific times in the future.
- *
- * @note This handler does not have anything to do with hardware watchdog
- * timers.
- */
-/**@{*/
-
-typedef struct Watchdog_Control Watchdog_Control;
-
-/**
- * @brief Type is used to specify the length of intervals.
- *
- * This type is used to specify the length of intervals.
- */
-typedef uint32_t Watchdog_Interval;
-
-/**
- * @brief Special watchdog ticks value to indicate an infinite wait.
- */
-#define WATCHDOG_NO_TIMEOUT 0
-
-/**
- * @brief Return type from a Watchdog Service Routine.
- *
- * This type defines the return type from a Watchdog Service Routine.
- */
-typedef void Watchdog_Service_routine;
-
-/**
- * @brief Pointer to a watchdog service routine.
- *
- * This type define a pointer to a watchdog service routine.
- */
-typedef Watchdog_Service_routine
- ( *Watchdog_Service_routine_entry )( Watchdog_Control * );
-
-/**
- * @brief The watchdog header to manage scheduled watchdogs.
- */
-typedef struct {
- /**
- * @brief Red-black tree of scheduled watchdogs sorted by expiration time.
- */
- RBTree_Control Watchdogs;
-
- /**
- * @brief The scheduled watchdog with the earliest expiration time or NULL in
- * case no watchdog is scheduled.
- */
- RBTree_Node *first;
-} Watchdog_Header;
-
-/**
- * @brief The control block used to manage each watchdog timer.
- *
- * The following record defines the control block used
- * to manage each watchdog timer.
- */
-struct Watchdog_Control {
- /**
- * @brief Nodes for the watchdog.
- */
- union {
- /**
- * @brief this field is a red-black tree node structure and allows this to
- * be placed on a red-black tree used to manage the scheduled watchdogs.
- */
- RBTree_Node RBTree;
-
- /**
- * @brief this field is a chain node structure and allows this to be placed
- * on a chain used to manage pending watchdogs by the timer server.
- */
- Chain_Node Chain;
- } Node;
-
-#if defined(RTEMS_SMP)
- /** @brief This field references the processor of this watchdog control. */
- struct Per_CPU_Control *cpu;
-#endif
-
- /** @brief This field is the function to invoke. */
- Watchdog_Service_routine_entry routine;
-
- /** @brief This field is the expiration time point. */
- uint64_t expire;
-};
-
-/**
- * @brief The watchdog ticks counter.
- *
- * With a 1ms watchdog tick, this counter overflows after 50 days since boot.
- */
-extern volatile Watchdog_Interval _Watchdog_Ticks_since_boot;
-
-/**
- * @brief The watchdog nanoseconds per tick.
- *
- * This constant is defined by the application configuration via
- * <rtems/confdefs.h>.
- */
-extern const uint32_t _Watchdog_Nanoseconds_per_tick;
-
-/**
- * @brief The watchdog ticks per second.
- *
- * This constant is defined by the application configuration via
- * <rtems/confdefs.h>.
- */
-extern const uint32_t _Watchdog_Ticks_per_second;
-
-/**
- * @brief The maximum number of seconds representable in the monotonic watchdog
- * format.
- *
- * This constant is defined by the application configuration via
- * <rtems/confdefs.h>.
- */
-extern const uint64_t _Watchdog_Monotonic_max_seconds;
-
-/**@}*/
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-/* end of include file */