posix/src/pspininit.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup POSIXAPI
0007  *
0008  * @brief POSIX Function Initializes a Spinlock Instance
0009  */
0010
0011 /*
0012  *  POSIX Spinlock Manager -- Initialize a Spinlock Instance
0013  *
0014  *  COPYRIGHT (c) 1989-2006.
0015  *  On-Line Applications Research Corporation (OAR).
0016  *
0017  *  Copyright (c) 2016 embedded brains GmbH & Co. KG
0018  *
0019  * Redistribution and use in source and binary forms, with or without
0020  * modification, are permitted provided that the following conditions
0021  * are met:
0022  * 1. Redistributions of source code must retain the above copyright
0023  *    notice, this list of conditions and the following disclaimer.
0024  * 2. Redistributions in binary form must reproduce the above copyright
0025  *    notice, this list of conditions and the following disclaimer in the
0026  *    documentation and/or other materials provided with the distribution.
0027  *
0028  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0029  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0030  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0031  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0032  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0033  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0034  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0035  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0036  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0037  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0038  * POSSIBILITY OF SUCH DAMAGE.
0039  */
0040
0041 #ifdef HAVE_CONFIG_H
0042 #include "config.h"
0043 #endif
0044
0045 #include <rtems/posix/spinlockimpl.h>
0046
0047 int pthread_spin_init(
0048   pthread_spinlock_t  *spinlock,
0049   int                  pshared
0050 )
0051 {
0052 #if defined(RTEMS_SMP)
0053   POSIX_Spinlock_Control *the_spinlock;
0054
0055   the_spinlock = _POSIX_Spinlock_Get( spinlock );
0056   _SMP_ticket_lock_Initialize( &the_spinlock->Lock );
0057 #endif
0058   return 0;
0059 }