Contiki-NG
memory-barrier.h
1 /*
2  * Copyright (c) 2017, George Oikonomou - http://www.spd.gr
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  * 3. Neither the name of the copyright holder nor the names of its
15  * contributors may be used to endorse or promote products derived
16  * from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
29  * OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 /*---------------------------------------------------------------------------*/
32 /**
33  * \addtogroup sys
34  * @{
35  *
36  * \defgroup memory-barrier CPU/Compiler memory barriers
37  * @{
38  *
39  * API for CPU/Compiler memory barriers
40  */
41 /*---------------------------------------------------------------------------*/
42 #ifndef MEMORY_BARRIER_H_
43 #define MEMORY_BARRIER_H_
44 /*---------------------------------------------------------------------------*/
45 #include "contiki.h"
46 /*---------------------------------------------------------------------------*/
47 #ifdef MEMORY_BARRIER_CONF_ARCH_HEADER_PATH
48 #include MEMORY_BARRIER_CONF_ARCH_HEADER_PATH
49 #endif /* MEMORY_BARRIER_CONF_ARCH_HEADER_PATH */
50 /*---------------------------------------------------------------------------*/
51 #ifndef memory_barrier
52 /**
53  * \brief Insert a memory barrier
54  *
55  * It is the platform/CPU developer's responsibility to expand this macro to
56  * a function that creates a memory barrier. Calling this macro will otherwise
57  * not generate any code.
58  */
59 #define memory_barrier()
60 #endif
61 /*---------------------------------------------------------------------------*/
62 #endif /* MEMORY_BARRIER_H_ */
63 /*---------------------------------------------------------------------------*/
64 /**
65  * @}
66  * @}
67  */