wdtecos.c

extremeDB s sample code,useful for you

/*****************************************************************
 *                                                               *
 *  wdtecos.c                                                     *
 *                                                               *
 * This file is a part of the eXtremeDB-HA Application Framework *
 *   It demonstrates McObject High Availabitity support and      *  
 * explains how to work with it.                                 *
 *                                                               * 
 *****************************************************************
 *  Copyright (c) 2001-2006 McObject LLC                         * 
 *  All Rights Reserved                                          *
 *****************************************************************/
/*
 * ++
 * 
 * PROJECT:   Ha Framework
 *
 * SUBSYSTEM: HA support
 *
 * MODULE:    wdtecos.c
 *
 * ABSTRACT:  WATCHDOG asynchron processing procedures for HA support
 *
 *
 * VERSION:   1.0
 *
 * HISTORY:
 *            1.0- 1 Vlad Artemiev     21-Aug-2006 Created it was
 *
 * --
 */

#ifdef _ECOS

#include <cyg/kernel/kapi.h>
//#include   <stdlib.h>
//#include   <stdio.h>
//#include <time.h>

#include    "watchdog.h"

static cyg_handle_t alarmid;
static long     ticks = 0;
static char 	init = 0;
static char 	disabled = 0;



extern uint4	ECOS_Ticks_Per_Second;

void mco_ecos_init_clock();

#define MS_TO_TICKS(ms) ((ms * ECOS_Ticks_Per_Second) / 1000)

#define WDT_REACTIVATE() \
  cyg_alarm_initialize(alarmid, cyg_current_time() + ticks, ticks);\
  if (disabled){\
    cyg_alarm_enable(alarmid);\
    disabled = 0;\
  }

void ecos_alrm_func(cyg_handle_t alrm,MCO_PWATCHDOG proc)
{
  if (proc) proc();
}

int mco_create_watchdog( long msec, MCO_PWATCHDOG proc)
{
  cyg_handle_t 	counter,rclocks;
  cyg_alarm	alarm;
  if (!init){
    rclocks = cyg_real_time_clock();
    cyg_clock_to_counter(rclocks,&counter);
    cyg_alarm_create(counter, (cyg_alarm_t*) ecos_alrm_func, (cyg_addrword_t)proc, &alarmid, &alarm);
    init = 1;
  }
  
  if (!ECOS_Ticks_Per_Second) mco_ecos_init_clock();
  ticks = MS_TO_TICKS(msec);

  WDT_REACTIVATE();

  return 0;
}

void mco_kill_watchdog( long msec, MCO_PWATCHDOG proc)
{
  if (init && !disabled){
    cyg_alarm_disable(alarmid);
    disabled = 1;
  }
}


#endif /* _ECOS */