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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [score/] [src/] [watchdogadjust.c] - Rev 173
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/* * Watchdog Handler * * * COPYRIGHT (c) 1989-1999. * 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.OARcorp.com/rtems/license.html. * * $Id: watchdogadjust.c,v 1.2 2001-09-27 11:59:34 chris Exp $ */ #include <rtems/system.h> #include <rtems/score/isr.h> #include <rtems/score/watchdog.h> /*PAGE * * _Watchdog_Adjust * * This routine adjusts the delta chain backward or forward in response * to a time change. * * Input parameters: * header - pointer to the delta chain to be adjusted * direction - forward or backward adjustment to delta chain * units - units to adjust * * Output parameters: */ void _Watchdog_Adjust( Chain_Control *header, Watchdog_Adjust_directions direction, Watchdog_Interval units ) { if ( !_Chain_Is_empty( header ) ) { switch ( direction ) { case WATCHDOG_BACKWARD: _Watchdog_First( header )->delta_interval += units; break; case WATCHDOG_FORWARD: while ( units ) { if ( units < _Watchdog_First( header )->delta_interval ) { _Watchdog_First( header )->delta_interval -= units; break; } else { units -= _Watchdog_First( header )->delta_interval; _Watchdog_First( header )->delta_interval = 1; _Watchdog_Tickle( header ); if ( _Chain_Is_empty( header ) ) break; } } break; } } }