diff options
Diffstat (limited to 'c/src/exec/rtems/src/ratemoncancel.c')
-rw-r--r-- | c/src/exec/rtems/src/ratemoncancel.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/c/src/exec/rtems/src/ratemoncancel.c b/c/src/exec/rtems/src/ratemoncancel.c new file mode 100644 index 0000000000..0bc3fc6fc3 --- /dev/null +++ b/c/src/exec/rtems/src/ratemoncancel.c @@ -0,0 +1,65 @@ +/* + * Rate Monotonic Manager + * + * + * COPYRIGHT (c) 1989-1998. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * 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. + * + * $Id$ + */ + +#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_cancel + * + * This directive allows a thread to cancel a rate monotonic timer. + * + * Input parameters: + * id - rate monotonic id + * + * Output parameters: + * RTEMS_SUCCESSFUL - if successful and caller is not the owning thread + * error code - if unsuccessful + */ + +rtems_status_code rtems_rate_monotonic_cancel( + Objects_Id id +) +{ + Rate_monotonic_Control *the_period; + Objects_Locations location; + + the_period = _Rate_monotonic_Get( id, &location ); + switch ( location ) { + case OBJECTS_REMOTE: + return RTEMS_INTERNAL_ERROR; /* should never return this */ + + case OBJECTS_ERROR: + return RTEMS_INVALID_ID; + + case OBJECTS_LOCAL: + if ( !_Thread_Is_executing( the_period->owner ) ) { + _Thread_Enable_dispatch(); + return RTEMS_NOT_OWNER_OF_RESOURCE; + } + (void) _Watchdog_Remove( &the_period->Timer ); + the_period->state = RATE_MONOTONIC_INACTIVE; + _Thread_Enable_dispatch(); + return RTEMS_SUCCESSFUL; + } + + return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ +} |