#ifndef CYGONCE_DEVS_WATCHDOG_HXX#define CYGONCE_DEVS_WATCHDOG_HXX//==========================================================================////      watchdog.hxx////      Watchdog interface declaration////==========================================================================//####COPYRIGHTBEGIN####//                                                                          // -------------------------------------------                              // The contents of this file are subject to the Red Hat eCos Public License // Version 1.1 (the "License"); you may not use this file except in         // compliance with the License.  You may obtain a copy of the License at    // http://www.redhat.com/                                                   //                                                                          // Software distributed under the License is distributed on an "AS IS"      // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the // License for the specific language governing rights and limitations under // the License.                                                             //                                                                          // The Original Code is eCos - Embedded Configurable Operating System,      // released September 30, 1998.                                             //                                                                          // The Initial Developer of the Original Code is Red Hat.                   // Portions created by Red Hat are                                          // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             // All Rights Reserved.                                                     // -------------------------------------------                              //                                                                          //####COPYRIGHTEND####//==========================================================================//#####DESCRIPTIONBEGIN####//// Author(s):   nickg// Contributors:        nickg// Date:        1998-07-14// Purpose:     Watchdog declarations// Description: This file defines the interface to the watchdog device//              that provides timer based recovery from software and//              hardware faults.// Usage:       #include <cyg/devs/watchdog.hxx>////####DESCRIPTIONEND####////==========================================================================#include <cyg/kernel/ktypes.h>#include <cyg/infra/cyg_ass.h>            // assertion macrosclass Cyg_Watchdog_Action;// -------------------------------------------------------------------------// Watchdog classclass Cyg_Watchdog{    Cyg_Watchdog_Action         *action_list;    cyg_uint64                  resolution;    public:    Cyg_Watchdog();    // Return time interval allowed between resets before watchdog    // triggers, in nanoseconds.    cyg_uint64 get_resolution( void );        // Start the watchdog running.    void start( void );    // Reset watchdog timer. This needs to be called regularly to prevent    // the watchdog firing.    void reset( void );#ifndef CYGSEM_WATCHDOG_RESETS_ON_TIMEOUT        // Trigger the watchdog as if the timer had expired.    void trigger( void );    // Register an action routine that will be called when the timer    // triggers.    void install_action( Cyg_Watchdog_Action *wdaction );    // Deregister a previously registered action routine.    void uninstall_action( Cyg_Watchdog_Action *wdaction );#endif        // A static instance of the single system defined watchdog device.    static Cyg_Watchdog watchdog;private:    void init_hw( void );};#ifndef CYGSEM_WATCHDOG_RESETS_ON_TIMEOUT    // -------------------------------------------------------------------------// Watchdog action classclass Cyg_Watchdog_Action{    friend class Cyg_Watchdog;    Cyg_Watchdog_Action         *next;          // link in chain        void (*action)( CYG_ADDRWORD data );        // action function    CYG_ADDRWORD data;                          // data argument    public:    Cyg_Watchdog_Action(        void (*action)( CYG_ADDRWORD data ),        CYG_ADDRWORD data        );    ~Cyg_Watchdog_Action();    void install();        void uninstall();};// -------------------------------------------------------------------------// Cyg_Watchdog_Action inlinesinline Cyg_Watchdog_Action::Cyg_Watchdog_Action(    void (*action_arg)( CYG_ADDRWORD data ),    CYG_ADDRWORD data_arg    ){    next        = NULL;    action      = action_arg;    data        = data_arg;}inline Cyg_Watchdog_Action::~Cyg_Watchdog_Action(){    Cyg_Watchdog::watchdog.uninstall_action( this );}inline void Cyg_Watchdog_Action::install(){    Cyg_Watchdog::watchdog.install_action( this );    }inline void Cyg_Watchdog_Action::uninstall(){    Cyg_Watchdog::watchdog.uninstall_action( this );    }#endif // CYGSEM_WATCHDOG_RESETS_ON_TIMEOUT// -------------------------------------------------------------------------#endif // ifndef CYGONCE_DEVS_WATCHDOG_HXX// EOF watchdog.hxx