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Diffstat (limited to 'cpukit/rtems/src/ratemoncreate.c')
-rw-r--r-- | cpukit/rtems/src/ratemoncreate.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/cpukit/rtems/src/ratemoncreate.c b/cpukit/rtems/src/ratemoncreate.c new file mode 100644 index 0000000000..9fb16aa56c --- /dev/null +++ b/cpukit/rtems/src/ratemoncreate.c @@ -0,0 +1,81 @@ +/* + * Rate Monotonic Manager -- Create a Period + * + * COPYRIGHT (c) 1989-2007. + * 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.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#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_create + * + * This directive creates a rate monotonic timer and performs + * some initialization. + * + * Input parameters: + * name - name of period + * id - pointer to rate monotonic id + * + * Output parameters: + * id - rate monotonic id + * RTEMS_SUCCESSFUL - if successful + * error code - if unsuccessful + */ + +rtems_status_code rtems_rate_monotonic_create( + rtems_name name, + rtems_id *id +) +{ + Rate_monotonic_Control *the_period; + + if ( !rtems_is_name_valid( name ) ) + return RTEMS_INVALID_NAME; + + if ( !id ) + return RTEMS_INVALID_ADDRESS; + + _Thread_Disable_dispatch(); /* to prevent deletion */ + + the_period = _Rate_monotonic_Allocate(); + + if ( !the_period ) { + _Thread_Enable_dispatch(); + return RTEMS_TOO_MANY; + } + + the_period->owner = _Thread_Executing; + the_period->state = RATE_MONOTONIC_INACTIVE; + + _Watchdog_Initialize( &the_period->Timer, NULL, 0, NULL ); + + _Rate_monotonic_Reset_statistics( the_period ); + + _Objects_Open( + &_Rate_monotonic_Information, + &the_period->Object, + (Objects_Name) name + ); + + *id = the_period->Object.id; + _Thread_Enable_dispatch(); + return RTEMS_SUCCESSFUL; +} |