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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [ratemontimeout.c] - Rev 410
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/* * Rate Monotonic Manager * * * 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: ratemontimeout.c,v 1.2 2001-09-27 11:59:19 chris Exp $ */ #include <rtems/system.h> #include <rtems/rtems/status.h> #include <rtems/rtems/support.h> #include <rtems/score/isr.h> #include <rtems/score/object.h> #include <rtems/rtems/ratemon.h> #include <rtems/score/thread.h> /*PAGE * * _Rate_monotonic_Timeout * * This routine processes a period ending. If the owning thread * is waiting for the period, that thread is unblocked and the * period reinitiated. Otherwise, the period is expired. * This routine is called by the watchdog handler. * * Input parameters: * id - period id * * Output parameters: NONE */ void _Rate_monotonic_Timeout( Objects_Id id, void *ignored ) { Rate_monotonic_Control *the_period; Objects_Locations location; Thread_Control *the_thread; the_period = _Rate_monotonic_Get( id, &location ); switch ( location ) { case OBJECTS_REMOTE: /* impossible */ case OBJECTS_ERROR: break; case OBJECTS_LOCAL: the_thread = the_period->owner; if ( _States_Is_waiting_for_period( the_thread->current_state ) && the_thread->Wait.id == the_period->Object.id ) { _Thread_Unblock( the_thread ); the_period->owner_ticks_executed_at_period = the_thread->ticks_executed; the_period->time_at_period = _Watchdog_Ticks_since_boot; _Watchdog_Reset( &the_period->Timer ); } else if ( the_period->state == RATE_MONOTONIC_OWNER_IS_BLOCKING ) { the_period->state = RATE_MONOTONIC_EXPIRED_WHILE_BLOCKING; the_period->owner_ticks_executed_at_period = the_thread->ticks_executed; the_period->time_at_period = _Watchdog_Ticks_since_boot; _Watchdog_Reset( &the_period->Timer ); } else the_period->state = RATE_MONOTONIC_EXPIRED; _Thread_Unnest_dispatch(); break; } }
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