rtems/src/ratemoncreate.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSImplClassicRateMonotonic
0007  *
0008  * @brief This source file contains the implementation of
0009  *   rtems_rate_monotonic_create().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-2007.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *
0016  * Redistribution and use in source and binary forms, with or without
0017  * modification, are permitted provided that the following conditions
0018  * are met:
0019  * 1. Redistributions of source code must retain the above copyright
0020  *    notice, this list of conditions and the following disclaimer.
0021  * 2. Redistributions in binary form must reproduce the above copyright
0022  *    notice, this list of conditions and the following disclaimer in the
0023  *    documentation and/or other materials provided with the distribution.
0024  *
0025  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0026  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0027  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0028  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0029  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0030  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0031  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0032  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0033  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0034  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0035  * POSSIBILITY OF SUCH DAMAGE.
0036  */
0037
0038 #ifdef HAVE_CONFIG_H
0039 #include "config.h"
0040 #endif
0041
0042 #include <rtems/rtems/ratemonimpl.h>
0043 #include <rtems/rtems/status.h>
0044 #include <rtems/rtems/support.h>
0045 #include <rtems/score/isr.h>
0046 #include <rtems/score/thread.h>
0047 #include <rtems/score/watchdogimpl.h>
0048 #include <rtems/sysinit.h>
0049
0050 rtems_status_code rtems_rate_monotonic_create(
0051   rtems_name  name,
0052   rtems_id   *id
0053 )
0054 {
0055   Rate_monotonic_Control *the_period;
0056
0057   if ( !rtems_is_name_valid( name ) )
0058     return RTEMS_INVALID_NAME;
0059
0060   if ( !id )
0061     return RTEMS_INVALID_ADDRESS;
0062
0063   the_period = _Rate_monotonic_Allocate();
0064
0065   if ( !the_period ) {
0066     _Objects_Allocator_unlock();
0067     return RTEMS_TOO_MANY;
0068   }
0069
0070   _ISR_lock_Initialize( &the_period->Lock, "Rate Monotonic Period" );
0071   _Priority_Node_initialize( &the_period->Priority, 0 );
0072   _Priority_Node_set_inactive( &the_period->Priority );
0073
0074   the_period->owner = _Thread_Get_executing();
0075   the_period->state = RATE_MONOTONIC_INACTIVE;
0076   the_period->postponed_jobs = 0;
0077
0078   _Watchdog_Preinitialize( &the_period->Timer, _Per_CPU_Get_by_index( 0 ) );
0079   _Watchdog_Initialize( &the_period->Timer, _Rate_monotonic_Timeout );
0080
0081   _Rate_monotonic_Reset_statistics( the_period );
0082
0083   *id = _Objects_Open_u32(
0084     &_Rate_monotonic_Information,
0085     &the_period->Object,
0086     name
0087   );
0088   _Objects_Allocator_unlock();
0089   return RTEMS_SUCCESSFUL;
0090 }
0091
0092 static void _Rate_monotonic_Manager_initialization( void )
0093 {
0094   _Objects_Initialize_information( &_Rate_monotonic_Information );
0095 }
0096
0097 RTEMS_SYSINIT_ITEM(
0098   _Rate_monotonic_Manager_initialization,
0099   RTEMS_SYSINIT_CLASSIC_RATE_MONOTONIC,
0100   RTEMS_SYSINIT_ORDER_MIDDLE
0101 );