rtems/src/timerreset.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSImplClassicTimer
0007  *
0008  * @brief This source file contains the implementation of
0009  *   rtems_timer_reset().
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/timerimpl.h>
0043
0044 rtems_status_code rtems_timer_reset(
0045   rtems_id id
0046 )
0047 {
0048   Timer_Control    *the_timer;
0049   ISR_lock_Context  lock_context;
0050
0051   the_timer = _Timer_Get( id, &lock_context );
0052   if ( the_timer != NULL ) {
0053     Per_CPU_Control   *cpu;
0054     rtems_status_code  status;
0055
0056     cpu = _Timer_Acquire_critical( the_timer, &lock_context );
0057
0058     if ( _Timer_Is_interval_class( the_timer->the_class ) ) {
0059       _Timer_Cancel( cpu, the_timer );
0060       _Watchdog_Insert(
0061         &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_TICKS ],
0062         &the_timer->Ticker,
0063         cpu->Watchdog.ticks + the_timer->initial
0064       );
0065       status = RTEMS_SUCCESSFUL;
0066     } else {
0067       status = RTEMS_NOT_DEFINED;
0068     }
0069
0070     _Timer_Release( cpu, &lock_context );
0071     return status;
0072   }
0073
0074   return RTEMS_INVALID_ID;
0075 }