1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSImplClassicSemaphore
*
* @brief This header file provides data structures used by the implementation
* and the @ref RTEMSImplApplConfig to define ::_Semaphore_Information.
*/
/*
* COPYRIGHT (c) 1989-2008, 2016.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _RTEMS_RTEMS_SEMDATA_H
#define _RTEMS_RTEMS_SEMDATA_H
#include <rtems/rtems/sem.h>
#include <rtems/score/coremutex.h>
#include <rtems/score/coresem.h>
#include <rtems/score/mrsp.h>
#include <rtems/score/object.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @addtogroup RTEMSImplClassicSemaphore
*
* @{
*/
/**
* The following defines the control block used to manage each semaphore.
*/
typedef struct {
/**
* @brief The object management portion of a semaphore instance.
*
* A pointer of the node of active semaphores contains the semaphore flags,
* see _Semaphore_Get_flags(). The rational for this optimization is a
* reduction of the semaphore control size in general and the ability to
* allow a configuration dependent size of the semaphore control block, e.g.
* for the MrsP semaphores.
*/
Objects_Control Object;
/**
* This contains the memory associated with the SuperCore Semaphore or
* Mutex instance that provides the primary functionality of each
* Classic API Semaphore instance. The structure used is dependent
* on the attributes specified by the user on the create directive.
*
* @note Only one of these has meaning in a particular Classic API
* Semaphore instance.
*/
union {
/**
* @brief The thread queue present in all other variants.
*/
Thread_queue_Control Wait_queue;
/**
* This is the SuperCore Mutex instance associated with this Classic
* API Semaphore instance.
*/
CORE_ceiling_mutex_Control Mutex;
/**
* This is the SuperCore Semaphore instance associated with this Classic
* API Semaphore instance.
*/
CORE_semaphore_Control Semaphore;
#if defined(RTEMS_SMP)
MRSP_Control MRSP;
#endif
} Core_control;
} Semaphore_Control;
/**
* @brief The Classic Semaphore objects information.
*/
extern Objects_Information _Semaphore_Information;
#if defined(RTEMS_MULTIPROCESSING)
/**
* @brief Semaphore MP Send Extract Proxy
*
* This routine is invoked when a task is deleted and it
* has a proxy which must be removed from a thread queue and
* the remote node must be informed of this.
*/
void _Semaphore_MP_Send_extract_proxy (
Thread_Control *the_thread,
Objects_Id id
);
#endif
/**
* @brief Macro to define the objects information for the Classic Semaphore
* objects.
*
* This macro should only be used by <rtems/confdefs.h>.
*
* @param max The configured object maximum (the OBJECTS_UNLIMITED_OBJECTS flag
* may be set).
* @param scheduler_count The configured scheduler count (only used in SMP
* configurations).
*/
#if defined(RTEMS_SMP)
#define SEMAPHORE_INFORMATION_DEFINE( max, scheduler_count ) \
typedef union { \
Objects_Control Object; \
Semaphore_Control Semaphore; \
struct { \
Objects_Control Object; \
MRSP_Control Control; \
Priority_Control ceiling_priorities[ scheduler_count ]; \
} MRSP; \
} Semaphore_Configured_control; \
OBJECTS_INFORMATION_DEFINE( \
_Semaphore, \
OBJECTS_CLASSIC_API, \
OBJECTS_RTEMS_SEMAPHORES, \
Semaphore_Configured_control, \
max, \
OBJECTS_NO_STRING_NAME, \
_Semaphore_MP_Send_extract_proxy \
)
#else
#define SEMAPHORE_INFORMATION_DEFINE( max, scheduler_count ) \
OBJECTS_INFORMATION_DEFINE( \
_Semaphore, \
OBJECTS_CLASSIC_API, \
OBJECTS_RTEMS_SEMAPHORES, \
Semaphore_Control, \
max, \
OBJECTS_NO_STRING_NAME, \
_Semaphore_MP_Send_extract_proxy \
)
#endif
/** @} */
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
|
