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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [ratemongetstatus.c] - Rev 751
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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: ratemongetstatus.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 * * rtems_rate_monotonic_get_status * * This directive allows a thread to obtain status information on a * period. * * Input parameters: * id - rate monotonic id * status - pointer to status control block * * Output parameters: * RTEMS_SUCCESSFUL - if successful * error code - if unsuccessful * */ rtems_status_code rtems_rate_monotonic_get_status( Objects_Id id, rtems_rate_monotonic_period_status *status ) { Objects_Locations location; Rate_monotonic_Control *the_period; if ( status == NULL ) return RTEMS_INVALID_ADDRESS; the_period = _Rate_monotonic_Get( id, &location ); switch ( location ) { case OBJECTS_REMOTE: /* should never return this */ return RTEMS_INTERNAL_ERROR; case OBJECTS_ERROR: return RTEMS_INVALID_ID; case OBJECTS_LOCAL: status->state = the_period->state; if ( status->state == RATE_MONOTONIC_INACTIVE ) { status->ticks_since_last_period = 0; status->ticks_executed_since_last_period = 0; } else { status->ticks_since_last_period = _Watchdog_Ticks_since_boot - the_period->time_at_period; status->ticks_executed_since_last_period = the_period->owner->ticks_executed - the_period->owner_ticks_executed_at_period; } _Thread_Enable_dispatch(); return RTEMS_SUCCESSFUL; } return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ }
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