1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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2 | |
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3 | /** |
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4 | * @file |
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5 | * |
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6 | * @ingroup RTEMSScoreSchedulerPrioritySMP |
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7 | * |
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8 | * @brief This header file provides interfaces of the |
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9 | * @ref RTEMSScoreSchedulerPrioritySMP which are only used by the |
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10 | * implementation. |
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11 | */ |
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12 | |
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13 | /* |
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14 | * Copyright (c) 2013, 2017 embedded brains GmbH. All rights reserved. |
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15 | * |
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16 | * embedded brains GmbH |
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17 | * Dornierstr. 4 |
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18 | * 82178 Puchheim |
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19 | * Germany |
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20 | * <rtems@embedded-brains.de> |
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21 | * |
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22 | * Redistribution and use in source and binary forms, with or without |
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23 | * modification, are permitted provided that the following conditions |
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24 | * are met: |
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25 | * 1. Redistributions of source code must retain the above copyright |
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26 | * notice, this list of conditions and the following disclaimer. |
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27 | * 2. Redistributions in binary form must reproduce the above copyright |
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28 | * notice, this list of conditions and the following disclaimer in the |
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29 | * documentation and/or other materials provided with the distribution. |
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30 | * |
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31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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32 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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33 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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34 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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35 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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36 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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37 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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38 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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39 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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40 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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41 | * POSSIBILITY OF SUCH DAMAGE. |
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42 | */ |
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43 | |
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44 | #ifndef _RTEMS_SCORE_SCHEDULERPRIORITYSMPIMPL_H |
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45 | #define _RTEMS_SCORE_SCHEDULERPRIORITYSMPIMPL_H |
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46 | |
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47 | #include <rtems/score/schedulerprioritysmp.h> |
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48 | #include <rtems/score/schedulerpriorityimpl.h> |
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49 | #include <rtems/score/schedulersimpleimpl.h> |
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50 | #include <rtems/score/schedulersmpimpl.h> |
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51 | |
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52 | #ifdef __cplusplus |
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53 | extern "C" { |
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54 | #endif /* __cplusplus */ |
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55 | |
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56 | /** |
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57 | * @ingroup RTEMSScoreSchedulerPrioritySMP |
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58 | * @{ |
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59 | */ |
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60 | |
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61 | static inline Scheduler_priority_SMP_Context *_Scheduler_priority_SMP_Get_self( |
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62 | Scheduler_Context *context |
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63 | ) |
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64 | { |
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65 | return (Scheduler_priority_SMP_Context *) context; |
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66 | } |
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67 | |
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68 | static inline Scheduler_priority_SMP_Node *_Scheduler_priority_SMP_Thread_get_node( |
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69 | Thread_Control *thread |
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70 | ) |
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71 | { |
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72 | return (Scheduler_priority_SMP_Node *) _Thread_Scheduler_get_home_node( thread ); |
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73 | } |
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74 | |
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75 | static inline Scheduler_priority_SMP_Node * |
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76 | _Scheduler_priority_SMP_Node_downcast( Scheduler_Node *node ) |
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77 | { |
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78 | return (Scheduler_priority_SMP_Node *) node; |
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79 | } |
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80 | |
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81 | static inline bool _Scheduler_priority_SMP_Has_ready( Scheduler_Context *context ) |
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82 | { |
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83 | Scheduler_priority_SMP_Context *self = |
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84 | _Scheduler_priority_SMP_Get_self( context ); |
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85 | |
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86 | return !_Priority_bit_map_Is_empty( &self->Bit_map ); |
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87 | } |
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88 | |
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89 | static inline void _Scheduler_priority_SMP_Move_from_scheduled_to_ready( |
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90 | Scheduler_Context *context, |
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91 | Scheduler_Node *scheduled_to_ready |
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92 | ) |
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93 | { |
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94 | Scheduler_priority_SMP_Context *self = |
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95 | _Scheduler_priority_SMP_Get_self( context ); |
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96 | Scheduler_priority_SMP_Node *node = |
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97 | _Scheduler_priority_SMP_Node_downcast( scheduled_to_ready ); |
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98 | |
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99 | _Chain_Extract_unprotected( &node->Base.Base.Node.Chain ); |
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100 | _Scheduler_priority_Ready_queue_enqueue_first( |
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101 | &node->Base.Base.Node.Chain, |
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102 | &node->Ready_queue, |
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103 | &self->Bit_map |
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104 | ); |
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105 | } |
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106 | |
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107 | static inline void _Scheduler_priority_SMP_Move_from_ready_to_scheduled( |
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108 | Scheduler_Context *context, |
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109 | Scheduler_Node *ready_to_scheduled |
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110 | ) |
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111 | { |
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112 | Scheduler_priority_SMP_Context *self; |
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113 | Scheduler_priority_SMP_Node *node; |
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114 | Priority_Control insert_priority; |
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115 | |
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116 | self = _Scheduler_priority_SMP_Get_self( context ); |
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117 | node = _Scheduler_priority_SMP_Node_downcast( ready_to_scheduled ); |
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118 | |
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119 | _Scheduler_priority_Ready_queue_extract( |
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120 | &node->Base.Base.Node.Chain, |
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121 | &node->Ready_queue, |
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122 | &self->Bit_map |
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123 | ); |
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124 | insert_priority = _Scheduler_SMP_Node_priority( &node->Base.Base ); |
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125 | insert_priority = SCHEDULER_PRIORITY_APPEND( insert_priority ); |
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126 | _Chain_Insert_ordered_unprotected( |
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127 | &self->Base.Scheduled, |
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128 | &node->Base.Base.Node.Chain, |
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129 | &insert_priority, |
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130 | _Scheduler_SMP_Priority_less_equal |
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131 | ); |
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132 | } |
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133 | |
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134 | static inline void _Scheduler_priority_SMP_Insert_ready( |
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135 | Scheduler_Context *context, |
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136 | Scheduler_Node *node_base, |
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137 | Priority_Control insert_priority |
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138 | ) |
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139 | { |
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140 | Scheduler_priority_SMP_Context *self; |
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141 | Scheduler_priority_SMP_Node *node; |
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142 | |
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143 | self = _Scheduler_priority_SMP_Get_self( context ); |
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144 | node = _Scheduler_priority_SMP_Node_downcast( node_base ); |
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145 | |
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146 | if ( SCHEDULER_PRIORITY_IS_APPEND( insert_priority ) ) { |
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147 | _Scheduler_priority_Ready_queue_enqueue( |
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148 | &node->Base.Base.Node.Chain, |
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149 | &node->Ready_queue, |
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150 | &self->Bit_map |
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151 | ); |
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152 | } else { |
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153 | _Scheduler_priority_Ready_queue_enqueue_first( |
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154 | &node->Base.Base.Node.Chain, |
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155 | &node->Ready_queue, |
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156 | &self->Bit_map |
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157 | ); |
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158 | } |
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159 | } |
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160 | |
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161 | static inline void _Scheduler_priority_SMP_Extract_from_ready( |
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162 | Scheduler_Context *context, |
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163 | Scheduler_Node *thread |
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164 | ) |
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165 | { |
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166 | Scheduler_priority_SMP_Context *self = |
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167 | _Scheduler_priority_SMP_Get_self( context ); |
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168 | Scheduler_priority_SMP_Node *node = |
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169 | _Scheduler_priority_SMP_Node_downcast( thread ); |
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170 | |
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171 | _Scheduler_priority_Ready_queue_extract( |
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172 | &node->Base.Base.Node.Chain, |
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173 | &node->Ready_queue, |
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174 | &self->Bit_map |
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175 | ); |
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176 | } |
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177 | |
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178 | static inline Scheduler_Node *_Scheduler_priority_SMP_Get_idle( void *arg ) |
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179 | { |
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180 | Scheduler_priority_SMP_Context *self; |
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181 | Scheduler_priority_SMP_Node *lowest_ready; |
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182 | |
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183 | self = _Scheduler_priority_SMP_Get_self( arg ); |
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184 | lowest_ready = (Scheduler_priority_SMP_Node *) |
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185 | _Chain_Last( self->idle_ready_queue ); |
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186 | _Scheduler_priority_Ready_queue_extract( |
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187 | &lowest_ready->Base.Base.Node.Chain, |
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188 | &lowest_ready->Ready_queue, |
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189 | &self->Bit_map |
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190 | ); |
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191 | |
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192 | return &lowest_ready->Base.Base; |
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193 | } |
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194 | |
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195 | static inline void _Scheduler_priority_SMP_Release_idle( |
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196 | Scheduler_Node *node_base, |
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197 | void *arg |
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198 | ) |
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199 | { |
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200 | Scheduler_priority_SMP_Context *self; |
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201 | Scheduler_priority_SMP_Node *node; |
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202 | |
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203 | self = _Scheduler_priority_SMP_Get_self( arg ); |
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204 | node = _Scheduler_priority_SMP_Node_downcast( node_base ); |
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205 | |
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206 | _Scheduler_priority_Ready_queue_enqueue( |
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207 | &node->Base.Base.Node.Chain, |
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208 | &node->Ready_queue, |
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209 | &self->Bit_map |
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210 | ); |
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211 | } |
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212 | |
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213 | static inline void _Scheduler_priority_SMP_Do_update( |
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214 | Scheduler_Context *context, |
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215 | Scheduler_Node *node_to_update, |
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216 | Priority_Control new_priority |
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217 | ) |
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218 | { |
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219 | Scheduler_priority_SMP_Context *self; |
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220 | Scheduler_priority_SMP_Node *node; |
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221 | |
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222 | self = _Scheduler_priority_SMP_Get_self( context ); |
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223 | node = _Scheduler_priority_SMP_Node_downcast( node_to_update ); |
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224 | |
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225 | _Scheduler_SMP_Node_update_priority( &node->Base, new_priority ); |
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226 | _Scheduler_priority_Ready_queue_update( |
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227 | &node->Ready_queue, |
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228 | SCHEDULER_PRIORITY_UNMAP( new_priority ), |
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229 | &self->Bit_map, |
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230 | &self->Ready[ 0 ] |
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231 | ); |
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232 | } |
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233 | |
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234 | /** @} */ |
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235 | |
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236 | #ifdef __cplusplus |
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237 | } |
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238 | #endif /* __cplusplus */ |
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239 | |
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240 | #endif /* _RTEMS_SCORE_SCHEDULERPRIORITYSMPIMPL_H */ |
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