score/src/coretodhookregister.c

0001 /**
0002  * @file
0003  *
0004  * @ingroup RTEMSScoreTODHooks
0005  *
0006  * @brief This source file contains the implementation of
0007  *   _TOD_Hook_Register().
0008  */
0009
0010 /*
0011  *  SPDX-License-Identifier: BSD-2-Clause
0012  *
0013  *  COPYRIGHT (c) 2019.
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/score/todimpl.h>
0043 #include <rtems/score/chainimpl.h>
0044
0045 void _TOD_Hook_Register(
0046   TOD_Hook *hook
0047 )
0048 {
0049   /*
0050    * At this time, this method does NOT have a Classic or POSIX API
0051    * that exports it. Any use of this method will be a direct call.
0052    * It should only be called while NOT holding the TOD lock.
0053    */
0054   _Assert( !_TOD_Is_owner() );
0055
0056   _Assert( hook != NULL );
0057
0058   _TOD_Lock();
0059   _Chain_Append_unprotected( &_TOD_Hooks, &hook->Node );
0060   _TOD_Unlock();
0061 }
0062