rtems/src/ratemoncancel.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_cancel().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-2007.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *  Copyright (c) 2016 embedded brains GmbH & Co. KG
0016  *
0017  * Redistribution and use in source and binary forms, with or without
0018  * modification, are permitted provided that the following conditions
0019  * are met:
0020  * 1. Redistributions of source code must retain the above copyright
0021  *    notice, this list of conditions and the following disclaimer.
0022  * 2. Redistributions in binary form must reproduce the above copyright
0023  *    notice, this list of conditions and the following disclaimer in the
0024  *    documentation and/or other materials provided with the distribution.
0025  *
0026  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0027  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0028  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0029  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0030  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0031  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0032  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0033  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0034  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0035  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0036  * POSSIBILITY OF SUCH DAMAGE.
0037  */
0038
0039 #ifdef HAVE_CONFIG_H
0040 #include "config.h"
0041 #endif
0042
0043 #include <rtems/rtems/ratemonimpl.h>
0044
0045 void _Rate_monotonic_Cancel(
0046   Rate_monotonic_Control *the_period,
0047   Thread_Control         *owner,
0048   ISR_lock_Context       *lock_context
0049 )
0050 {
0051   Per_CPU_Control      *cpu_self;
0052   Thread_queue_Context  queue_context;
0053
0054   _Rate_monotonic_Acquire_critical( the_period, lock_context );
0055
0056   _Watchdog_Per_CPU_remove_ticks( &the_period->Timer );
0057   the_period->postponed_jobs = 0;
0058   the_period->state = RATE_MONOTONIC_INACTIVE;
0059   _Scheduler_Cancel_job(
0060     the_period->owner,
0061     &the_period->Priority,
0062     &queue_context
0063   );
0064
0065   cpu_self = _Thread_Dispatch_disable_critical( lock_context );
0066   _Rate_monotonic_Release( the_period, lock_context );
0067   _Thread_Priority_update( &queue_context );
0068   _Thread_Dispatch_enable( cpu_self );
0069 }
0070
0071 rtems_status_code rtems_rate_monotonic_cancel(
0072   rtems_id id
0073 )
0074 {
0075   Rate_monotonic_Control *the_period;
0076   ISR_lock_Context        lock_context;
0077   Thread_Control         *executing;
0078
0079   the_period = _Rate_monotonic_Get( id, &lock_context );
0080   if ( the_period == NULL ) {
0081     return RTEMS_INVALID_ID;
0082   }
0083
0084   executing = _Thread_Executing;
0085   if ( executing != the_period->owner ) {
0086     _ISR_lock_ISR_enable( &lock_context );
0087     return RTEMS_NOT_OWNER_OF_RESOURCE;
0088   }
0089
0090   _Rate_monotonic_Cancel( the_period, executing, &lock_context );
0091   return RTEMS_SUCCESSFUL;
0092 }