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
176
177
178
179
180
181
182
183
184
185
186
|
/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSImplClassicModes
*
* @brief This header file provides the implementation interfaces of
* the @ref RTEMSImplClassicModes support.
*/
/* COPYRIGHT (c) 1989-2008.
* 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_MODESIMPL_H
#define _RTEMS_RTEMS_MODESIMPL_H
#include <rtems/rtems/modes.h>
#include <rtems/score/schedulerimpl.h>
#include <rtems/score/smpimpl.h>
#include <rtems/score/threadimpl.h>
#include <rtems/score/threadcpubudget.h>
#include <rtems/config.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup RTEMSImplClassicModes Task Modes
*
* @ingroup RTEMSImplClassic
*
* @brief This group contains the implementation to support task modes.
*
* @{
*/
/**
* @brief Checks if mode_set says that Asynchronous Signal Processing is disabled.
*
* This function returns TRUE if mode_set indicates that Asynchronous
* Signal Processing is disabled, and FALSE otherwise.
*/
static inline bool _Modes_Is_asr_disabled (
rtems_mode mode_set
)
{
return (mode_set & RTEMS_ASR_MASK) == RTEMS_NO_ASR;
}
/**
* @brief Checks if mode_set indicates that preemption is enabled.
*
* This function returns TRUE if mode_set indicates that preemption
* is enabled, and FALSE otherwise.
*/
static inline bool _Modes_Is_preempt (
rtems_mode mode_set
)
{
return (mode_set & RTEMS_PREEMPT_MASK) == RTEMS_PREEMPT;
}
/**
* @brief Checks if mode_set indicates that timeslicing is enabled.
*
* This function returns TRUE if mode_set indicates that timeslicing
* is enabled, and FALSE otherwise.
*/
static inline bool _Modes_Is_timeslice (
rtems_mode mode_set
)
{
return (mode_set & RTEMS_TIMESLICE_MASK) == RTEMS_TIMESLICE;
}
/**
* @brief Gets the interrupt level portion of the mode_set.
*
* This function returns the interrupt level portion of the mode_set.
*/
static inline ISR_Level _Modes_Get_interrupt_level (
rtems_mode mode_set
)
{
return ( mode_set & RTEMS_INTERRUPT_MASK );
}
#if defined(RTEMS_SMP) || CPU_ENABLE_ROBUST_THREAD_DISPATCH == TRUE
/**
* @brief Checks if support for the interrupt level is implemented.
*
* @param mode_set is the mode set which specifies the interrupt level to
* check.
*
* @return Returns true, if support for the interrupt level is implemented,
* otherwise returns false.
*/
static inline bool _Modes_Is_interrupt_level_supported(
rtems_mode mode_set
)
{
return _Modes_Get_interrupt_level( mode_set ) == 0
#if CPU_ENABLE_ROBUST_THREAD_DISPATCH == FALSE
|| !_SMP_Need_inter_processor_interrupts()
#endif
;
}
#endif
#if defined(RTEMS_SMP)
/**
* @brief Checks if support for the preempt mode is implemented.
*
* @param mode_set is the mode set which specifies the preempt mode to check.
*
* @param the_thread is the thread to check.
*
* @return Returns true, if support for the preempt mode is implemented,
* otherwise returns false.
*/
static inline bool _Modes_Is_preempt_mode_supported(
rtems_mode mode_set,
const Thread_Control *the_thread
)
{
return _Modes_Is_preempt( mode_set ) ||
_Scheduler_Is_non_preempt_mode_supported(
_Thread_Scheduler_get_home( the_thread )
);
}
#endif
/**
* @brief Applies the timeslice mode to the thread.
*
* @param mode_set is the mode set which specifies the timeslice mode for the
* thread.
*
* @param[out] the_thread is the thread to apply the timeslice mode.
*/
static inline void _Modes_Apply_timeslice_to_thread(
rtems_mode mode_set,
Thread_Control *the_thread
)
{
if ( _Modes_Is_timeslice( mode_set ) ) {
the_thread->CPU_budget.operations = &_Thread_CPU_budget_reset_timeslice;
the_thread->CPU_budget.available =
rtems_configuration_get_ticks_per_timeslice();
} else {
the_thread->CPU_budget.operations = NULL;
}
}
#ifdef __cplusplus
}
#endif
/**@}*/
#endif
/* end of include file */
|
