RTEMS
wkspacesupport.h
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1 /* SPDX-License-Identifier: BSD-2-Clause */
2 
11 /*
12  * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
13  *
14  * Redistribution and use in source and binary forms, with or without
15  * modification, are permitted provided that the following conditions
16  * are met:
17  * 1. Redistributions of source code must retain the above copyright
18  * notice, this list of conditions and the following disclaimer.
19  * 2. Redistributions in binary form must reproduce the above copyright
20  * notice, this list of conditions and the following disclaimer in the
21  * documentation and/or other materials provided with the distribution.
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23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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35 
36 #ifndef _RTEMS_CONFDEFS_WKSPACESUPPORT_H
37 #define _RTEMS_CONFDEFS_WKSPACESUPPORT_H
38 
39 #ifndef __CONFIGURATION_TEMPLATE_h
40 #error "Do not include this file directly, use <rtems/confdefs.h> instead"
41 #endif
42 
43 #ifdef CONFIGURE_INIT
44 
45 #include <rtems/score/heap.h>
46 
47 #define _Configure_Zero_or_one( _number ) ( ( _number ) != 0 ? 1 : 0 )
48 
49 #define _Configure_Align_up( _val, _align ) \
50  ( ( ( _val ) + ( _align ) - 1) - ( ( _val ) + ( _align ) - 1 ) % ( _align ) )
51 
52 #define _CONFIGURE_HEAP_MIN_BLOCK_SIZE \
53  _Configure_Align_up( sizeof( Heap_Block ), CPU_HEAP_ALIGNMENT )
54 
55 #define _Configure_From_workspace( _size ) \
56  ( (uintptr_t) ( _Configure_Zero_or_one( _size ) \
57  * _Configure_Align_up( \
58  _size + HEAP_BLOCK_HEADER_SIZE, \
59  _CONFIGURE_HEAP_MIN_BLOCK_SIZE \
60  ) ) )
61 
62 #endif /* CONFIGURE_INIT */
63 
64 #endif /* _RTEMS_CONFDEFS_WKSPACESUPPORT_H */
Heap Handler API.