1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief EDF SMP Scheduler Implementation |
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5 | * |
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6 | * @ingroup ScoreSchedulerSMPEDF |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2017 embedded brains GmbH. |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <rtems/score/scheduleredfsmp.h> |
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22 | #include <rtems/score/schedulersmpimpl.h> |
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23 | |
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24 | static inline Scheduler_EDF_SMP_Context * |
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25 | _Scheduler_EDF_SMP_Get_context( const Scheduler_Control *scheduler ) |
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26 | { |
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27 | return (Scheduler_EDF_SMP_Context *) _Scheduler_Get_context( scheduler ); |
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28 | } |
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29 | |
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30 | static inline Scheduler_EDF_SMP_Context * |
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31 | _Scheduler_EDF_SMP_Get_self( Scheduler_Context *context ) |
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32 | { |
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33 | return (Scheduler_EDF_SMP_Context *) context; |
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34 | } |
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35 | |
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36 | static inline Scheduler_EDF_SMP_Node * |
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37 | _Scheduler_EDF_SMP_Node_downcast( Scheduler_Node *node ) |
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38 | { |
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39 | return (Scheduler_EDF_SMP_Node *) node; |
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40 | } |
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41 | |
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42 | static inline bool _Scheduler_EDF_SMP_Less( |
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43 | const void *left, |
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44 | const RBTree_Node *right |
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45 | ) |
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46 | { |
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47 | const Priority_Control *the_left; |
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48 | const Scheduler_SMP_Node *the_right; |
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49 | Priority_Control prio_left; |
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50 | Priority_Control prio_right; |
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51 | |
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52 | the_left = left; |
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53 | the_right = RTEMS_CONTAINER_OF( right, Scheduler_SMP_Node, Base.Node.RBTree ); |
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54 | |
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55 | prio_left = *the_left; |
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56 | prio_right = the_right->priority; |
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57 | |
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58 | return prio_left < prio_right; |
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59 | } |
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60 | |
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61 | static inline bool _Scheduler_EDF_SMP_Less_or_equal( |
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62 | const void *left, |
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63 | const RBTree_Node *right |
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64 | ) |
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65 | { |
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66 | const Priority_Control *the_left; |
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67 | const Scheduler_SMP_Node *the_right; |
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68 | Priority_Control prio_left; |
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69 | Priority_Control prio_right; |
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70 | |
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71 | the_left = left; |
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72 | the_right = RTEMS_CONTAINER_OF( right, Scheduler_SMP_Node, Base.Node.RBTree ); |
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73 | |
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74 | prio_left = *the_left; |
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75 | prio_right = the_right->priority; |
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76 | |
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77 | return prio_left <= prio_right; |
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78 | } |
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79 | |
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80 | void _Scheduler_EDF_SMP_Initialize( const Scheduler_Control *scheduler ) |
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81 | { |
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82 | Scheduler_EDF_SMP_Context *self = |
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83 | _Scheduler_EDF_SMP_Get_context( scheduler ); |
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84 | |
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85 | _Scheduler_SMP_Initialize( &self->Base ); |
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86 | _Chain_Initialize_empty( &self->Affine_queues ); |
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87 | /* The ready queues are zero initialized and thus empty */ |
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88 | } |
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89 | |
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90 | void _Scheduler_EDF_SMP_Node_initialize( |
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91 | const Scheduler_Control *scheduler, |
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92 | Scheduler_Node *node, |
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93 | Thread_Control *the_thread, |
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94 | Priority_Control priority |
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95 | ) |
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96 | { |
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97 | Scheduler_SMP_Node *smp_node; |
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98 | |
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99 | smp_node = _Scheduler_SMP_Node_downcast( node ); |
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100 | _Scheduler_SMP_Node_initialize( scheduler, smp_node, the_thread, priority ); |
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101 | } |
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102 | |
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103 | static inline void _Scheduler_EDF_SMP_Do_update( |
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104 | Scheduler_Context *context, |
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105 | Scheduler_Node *node, |
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106 | Priority_Control new_priority |
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107 | ) |
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108 | { |
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109 | Scheduler_SMP_Node *smp_node; |
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110 | |
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111 | (void) context; |
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112 | |
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113 | smp_node = _Scheduler_SMP_Node_downcast( node ); |
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114 | _Scheduler_SMP_Node_update_priority( smp_node, new_priority ); |
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115 | } |
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116 | |
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117 | static inline bool _Scheduler_EDF_SMP_Has_ready( Scheduler_Context *context ) |
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118 | { |
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119 | Scheduler_EDF_SMP_Context *self = _Scheduler_EDF_SMP_Get_self( context ); |
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120 | |
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121 | return !_RBTree_Is_empty( &self->Ready[ 0 ].Queue ); |
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122 | } |
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123 | |
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124 | static inline bool _Scheduler_EDF_SMP_Overall_less( |
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125 | const Scheduler_EDF_SMP_Node *left, |
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126 | const Scheduler_EDF_SMP_Node *right |
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127 | ) |
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128 | { |
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129 | Priority_Control lp; |
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130 | Priority_Control rp; |
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131 | |
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132 | lp = left->Base.priority; |
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133 | rp = right->Base.priority; |
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134 | |
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135 | return lp < rp || (lp == rp && left->generation < right->generation ); |
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136 | } |
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137 | |
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138 | static inline Scheduler_EDF_SMP_Node * |
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139 | _Scheduler_EDF_SMP_Challenge_highest_ready( |
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140 | Scheduler_EDF_SMP_Context *self, |
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141 | Scheduler_EDF_SMP_Node *highest_ready, |
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142 | RBTree_Control *ready_queue |
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143 | ) |
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144 | { |
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145 | Scheduler_EDF_SMP_Node *other; |
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146 | |
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147 | other = (Scheduler_EDF_SMP_Node *) _RBTree_Minimum( ready_queue ); |
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148 | _Assert( other != NULL ); |
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149 | |
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150 | if ( _Scheduler_EDF_SMP_Overall_less( other, highest_ready ) ) { |
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151 | return other; |
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152 | } |
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153 | |
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154 | return highest_ready; |
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155 | } |
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156 | |
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157 | static inline Scheduler_Node *_Scheduler_EDF_SMP_Get_highest_ready( |
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158 | Scheduler_Context *context, |
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159 | Scheduler_Node *filter |
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160 | ) |
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161 | { |
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162 | Scheduler_EDF_SMP_Context *self; |
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163 | Scheduler_EDF_SMP_Node *highest_ready; |
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164 | Scheduler_EDF_SMP_Node *node; |
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165 | uint32_t rqi; |
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166 | const Chain_Node *tail; |
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167 | Chain_Node *next; |
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168 | |
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169 | self = _Scheduler_EDF_SMP_Get_self( context ); |
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170 | highest_ready = (Scheduler_EDF_SMP_Node *) |
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171 | _RBTree_Minimum( &self->Ready[ 0 ].Queue ); |
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172 | _Assert( highest_ready != NULL ); |
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173 | |
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174 | /* |
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175 | * The filter node is a scheduled node which is no longer on the scheduled |
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176 | * chain. In case this is an affine thread, then we have to check the |
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177 | * corresponding affine ready queue. |
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178 | */ |
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179 | |
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180 | node = (Scheduler_EDF_SMP_Node *) filter; |
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181 | rqi = node->ready_queue_index; |
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182 | |
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183 | if ( rqi != 0 && !_RBTree_Is_empty( &self->Ready[ rqi ].Queue ) ) { |
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184 | highest_ready = _Scheduler_EDF_SMP_Challenge_highest_ready( |
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185 | self, |
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186 | highest_ready, |
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187 | &self->Ready[ rqi ].Queue |
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188 | ); |
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189 | } |
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190 | |
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191 | tail = _Chain_Immutable_tail( &self->Affine_queues ); |
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192 | next = _Chain_First( &self->Affine_queues ); |
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193 | |
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194 | while ( next != tail ) { |
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195 | Scheduler_EDF_SMP_Ready_queue *ready_queue; |
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196 | |
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197 | ready_queue = (Scheduler_EDF_SMP_Ready_queue *) next; |
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198 | highest_ready = _Scheduler_EDF_SMP_Challenge_highest_ready( |
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199 | self, |
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200 | highest_ready, |
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201 | &ready_queue->Queue |
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202 | ); |
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203 | |
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204 | next = _Chain_Next( next ); |
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205 | } |
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206 | |
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207 | return &highest_ready->Base.Base; |
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208 | } |
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209 | |
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210 | static inline void _Scheduler_EDF_SMP_Set_scheduled( |
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211 | Scheduler_EDF_SMP_Context *self, |
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212 | Scheduler_EDF_SMP_Node *scheduled, |
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213 | const Per_CPU_Control *cpu |
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214 | ) |
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215 | { |
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216 | self->Ready[ _Per_CPU_Get_index( cpu ) + 1 ].scheduled = scheduled; |
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217 | } |
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218 | |
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219 | static inline Scheduler_EDF_SMP_Node *_Scheduler_EDF_SMP_Get_scheduled( |
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220 | const Scheduler_EDF_SMP_Context *self, |
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221 | uint32_t rqi |
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222 | ) |
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223 | { |
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224 | return self->Ready[ rqi ].scheduled; |
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225 | } |
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226 | |
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227 | static inline Scheduler_Node *_Scheduler_EDF_SMP_Get_lowest_scheduled( |
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228 | Scheduler_Context *context, |
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229 | Scheduler_Node *filter_base |
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230 | ) |
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231 | { |
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232 | Scheduler_EDF_SMP_Node *filter; |
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233 | uint32_t rqi; |
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234 | |
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235 | filter = _Scheduler_EDF_SMP_Node_downcast( filter_base ); |
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236 | rqi = filter->ready_queue_index; |
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237 | |
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238 | if ( rqi != 0 ) { |
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239 | Scheduler_EDF_SMP_Context *self; |
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240 | Scheduler_EDF_SMP_Node *node; |
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241 | |
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242 | self = _Scheduler_EDF_SMP_Get_self( context ); |
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243 | node = _Scheduler_EDF_SMP_Get_scheduled( self, rqi ); |
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244 | |
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245 | if ( node->ready_queue_index > 0 ) { |
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246 | _Assert( node->ready_queue_index == rqi ); |
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247 | return &node->Base.Base; |
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248 | } |
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249 | } |
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250 | |
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251 | return _Scheduler_SMP_Get_lowest_scheduled( context, filter_base ); |
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252 | } |
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253 | |
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254 | static inline void _Scheduler_EDF_SMP_Insert_ready( |
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255 | Scheduler_Context *context, |
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256 | Scheduler_Node *node_base, |
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257 | size_t generation_index, |
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258 | int increment, |
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259 | bool ( *less )( const void *, const RBTree_Node * ) |
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260 | ) |
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261 | { |
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262 | Scheduler_EDF_SMP_Context *self; |
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263 | Scheduler_EDF_SMP_Node *node; |
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264 | uint32_t rqi; |
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265 | Scheduler_EDF_SMP_Ready_queue *ready_queue; |
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266 | int64_t generation; |
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267 | |
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268 | self = _Scheduler_EDF_SMP_Get_self( context ); |
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269 | node = _Scheduler_EDF_SMP_Node_downcast( node_base ); |
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270 | rqi = node->ready_queue_index; |
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271 | ready_queue = &self->Ready[ rqi ]; |
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272 | |
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273 | generation = self->generations[ generation_index ]; |
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274 | node->generation = generation; |
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275 | self->generations[ generation_index ] = generation + increment; |
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276 | |
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277 | _RBTree_Initialize_node( &node->Base.Base.Node.RBTree ); |
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278 | _RBTree_Insert_inline( |
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279 | &ready_queue->Queue, |
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280 | &node->Base.Base.Node.RBTree, |
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281 | &node->Base.priority, |
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282 | less |
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283 | ); |
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284 | |
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285 | if ( rqi != 0 && _Chain_Is_node_off_chain( &ready_queue->Node ) ) { |
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286 | Scheduler_EDF_SMP_Node *scheduled; |
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287 | |
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288 | scheduled = _Scheduler_EDF_SMP_Get_scheduled( self, rqi ); |
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289 | |
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290 | if ( scheduled->ready_queue_index == 0 ) { |
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291 | _Chain_Append_unprotected( &self->Affine_queues, &ready_queue->Node ); |
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292 | } |
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293 | } |
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294 | } |
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295 | |
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296 | static inline void _Scheduler_EDF_SMP_Extract_from_ready( |
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297 | Scheduler_Context *context, |
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298 | Scheduler_Node *node_to_extract |
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299 | ) |
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300 | { |
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301 | Scheduler_EDF_SMP_Context *self; |
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302 | Scheduler_EDF_SMP_Node *node; |
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303 | uint32_t rqi; |
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304 | Scheduler_EDF_SMP_Ready_queue *ready_queue; |
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305 | |
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306 | self = _Scheduler_EDF_SMP_Get_self( context ); |
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307 | node = _Scheduler_EDF_SMP_Node_downcast( node_to_extract ); |
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308 | rqi = node->ready_queue_index; |
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309 | ready_queue = &self->Ready[ rqi ]; |
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310 | |
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311 | _RBTree_Extract( &ready_queue->Queue, &node->Base.Base.Node.RBTree ); |
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312 | _Chain_Initialize_node( &node->Base.Base.Node.Chain ); |
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313 | |
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314 | if ( |
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315 | rqi != 0 |
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316 | && _RBTree_Is_empty( &ready_queue->Queue ) |
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317 | && !_Chain_Is_node_off_chain( &ready_queue->Node ) |
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318 | ) { |
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319 | _Chain_Extract_unprotected( &ready_queue->Node ); |
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320 | _Chain_Set_off_chain( &ready_queue->Node ); |
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321 | } |
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322 | } |
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323 | |
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324 | static inline void _Scheduler_EDF_SMP_Move_from_scheduled_to_ready( |
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325 | Scheduler_Context *context, |
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326 | Scheduler_Node *scheduled_to_ready |
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327 | ) |
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328 | { |
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329 | _Chain_Extract_unprotected( &scheduled_to_ready->Node.Chain ); |
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330 | _Scheduler_EDF_SMP_Insert_ready( |
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331 | context, |
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332 | scheduled_to_ready, |
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333 | 0, |
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334 | 1, |
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335 | _Scheduler_EDF_SMP_Less |
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336 | ); |
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337 | } |
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338 | |
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339 | static inline void _Scheduler_EDF_SMP_Move_from_ready_to_scheduled( |
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340 | Scheduler_Context *context, |
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341 | Scheduler_Node *ready_to_scheduled |
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342 | ) |
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343 | { |
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344 | _Scheduler_EDF_SMP_Extract_from_ready( context, ready_to_scheduled ); |
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345 | _Scheduler_SMP_Insert_scheduled_fifo( context, ready_to_scheduled ); |
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346 | } |
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347 | |
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348 | static inline void _Scheduler_EDF_SMP_Insert_ready_lifo( |
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349 | Scheduler_Context *context, |
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350 | Scheduler_Node *node_to_insert |
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351 | ) |
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352 | { |
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353 | _Scheduler_EDF_SMP_Insert_ready( |
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354 | context, |
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355 | node_to_insert, |
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356 | 1, |
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357 | -1, |
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358 | _Scheduler_EDF_SMP_Less_or_equal |
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359 | ); |
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360 | } |
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361 | |
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362 | static inline void _Scheduler_EDF_SMP_Insert_ready_fifo( |
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363 | Scheduler_Context *context, |
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364 | Scheduler_Node *node_to_insert |
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365 | ) |
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366 | { |
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367 | _Scheduler_EDF_SMP_Insert_ready( |
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368 | context, |
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369 | node_to_insert, |
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370 | 0, |
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371 | 1, |
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372 | _Scheduler_EDF_SMP_Less |
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373 | ); |
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374 | } |
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375 | |
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376 | static inline void _Scheduler_EDF_SMP_Allocate_processor( |
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377 | Scheduler_Context *context, |
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378 | Scheduler_Node *scheduled_base, |
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379 | Scheduler_Node *victim_base, |
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380 | Per_CPU_Control *victim_cpu |
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381 | ) |
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382 | { |
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383 | Scheduler_EDF_SMP_Context *self; |
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384 | Scheduler_EDF_SMP_Node *scheduled; |
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385 | uint32_t rqi; |
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386 | |
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387 | (void) victim_base; |
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388 | self = _Scheduler_EDF_SMP_Get_self( context ); |
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389 | scheduled = _Scheduler_EDF_SMP_Node_downcast( scheduled_base ); |
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390 | rqi = scheduled->ready_queue_index; |
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391 | |
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392 | if ( rqi != 0 ) { |
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393 | Scheduler_EDF_SMP_Ready_queue *ready_queue; |
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394 | Per_CPU_Control *desired_cpu; |
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395 | |
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396 | ready_queue = &self->Ready[ rqi ]; |
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397 | |
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398 | if ( !_Chain_Is_node_off_chain( &ready_queue->Node ) ) { |
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399 | _Chain_Extract_unprotected( &ready_queue->Node ); |
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400 | _Chain_Set_off_chain( &ready_queue->Node ); |
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401 | } |
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402 | |
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403 | desired_cpu = _Per_CPU_Get_by_index( rqi - 1 ); |
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404 | |
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405 | if ( victim_cpu != desired_cpu ) { |
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406 | Scheduler_EDF_SMP_Node *node; |
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407 | |
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408 | node = _Scheduler_EDF_SMP_Get_scheduled( self, rqi ); |
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409 | _Assert( node->ready_queue_index == 0 ); |
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410 | _Scheduler_EDF_SMP_Set_scheduled( self, node, victim_cpu ); |
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411 | _Scheduler_SMP_Allocate_processor_exact( |
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412 | context, |
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413 | &node->Base.Base, |
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414 | NULL, |
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415 | victim_cpu |
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416 | ); |
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417 | victim_cpu = desired_cpu; |
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418 | } |
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419 | } |
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420 | |
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421 | _Scheduler_EDF_SMP_Set_scheduled( self, scheduled, victim_cpu ); |
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422 | _Scheduler_SMP_Allocate_processor_exact( |
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423 | context, |
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424 | &scheduled->Base.Base, |
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425 | NULL, |
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426 | victim_cpu |
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427 | ); |
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428 | } |
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429 | |
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430 | void _Scheduler_EDF_SMP_Block( |
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431 | const Scheduler_Control *scheduler, |
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432 | Thread_Control *thread, |
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433 | Scheduler_Node *node |
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434 | ) |
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435 | { |
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436 | Scheduler_Context *context = _Scheduler_Get_context( scheduler ); |
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437 | |
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438 | _Scheduler_SMP_Block( |
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439 | context, |
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440 | thread, |
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441 | node, |
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442 | _Scheduler_EDF_SMP_Extract_from_ready, |
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443 | _Scheduler_EDF_SMP_Get_highest_ready, |
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444 | _Scheduler_EDF_SMP_Move_from_ready_to_scheduled, |
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445 | _Scheduler_EDF_SMP_Allocate_processor |
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446 | ); |
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447 | } |
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448 | |
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449 | static inline bool _Scheduler_EDF_SMP_Enqueue_ordered( |
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450 | Scheduler_Context *context, |
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451 | Scheduler_Node *node, |
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452 | Chain_Node_order order, |
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453 | Scheduler_SMP_Insert insert_ready, |
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454 | Scheduler_SMP_Insert insert_scheduled |
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455 | ) |
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456 | { |
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457 | return _Scheduler_SMP_Enqueue_ordered( |
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458 | context, |
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459 | node, |
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460 | order, |
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461 | insert_ready, |
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462 | insert_scheduled, |
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463 | _Scheduler_EDF_SMP_Move_from_scheduled_to_ready, |
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464 | _Scheduler_EDF_SMP_Get_lowest_scheduled, |
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465 | _Scheduler_EDF_SMP_Allocate_processor |
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466 | ); |
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467 | } |
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468 | |
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469 | static inline bool _Scheduler_EDF_SMP_Enqueue_lifo( |
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470 | Scheduler_Context *context, |
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471 | Scheduler_Node *node |
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472 | ) |
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473 | { |
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474 | return _Scheduler_EDF_SMP_Enqueue_ordered( |
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475 | context, |
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476 | node, |
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477 | _Scheduler_SMP_Insert_priority_lifo_order, |
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478 | _Scheduler_EDF_SMP_Insert_ready_lifo, |
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479 | _Scheduler_SMP_Insert_scheduled_lifo |
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480 | ); |
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481 | } |
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482 | |
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483 | static inline bool _Scheduler_EDF_SMP_Enqueue_fifo( |
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484 | Scheduler_Context *context, |
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485 | Scheduler_Node *node |
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486 | ) |
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487 | { |
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488 | return _Scheduler_EDF_SMP_Enqueue_ordered( |
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489 | context, |
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490 | node, |
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491 | _Scheduler_SMP_Insert_priority_fifo_order, |
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492 | _Scheduler_EDF_SMP_Insert_ready_fifo, |
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493 | _Scheduler_SMP_Insert_scheduled_fifo |
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494 | ); |
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495 | } |
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496 | |
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497 | static inline bool _Scheduler_EDF_SMP_Enqueue_scheduled_ordered( |
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498 | Scheduler_Context *context, |
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499 | Scheduler_Node *node, |
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500 | Chain_Node_order order, |
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501 | Scheduler_SMP_Insert insert_ready, |
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502 | Scheduler_SMP_Insert insert_scheduled |
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503 | ) |
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504 | { |
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505 | return _Scheduler_SMP_Enqueue_scheduled_ordered( |
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506 | context, |
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507 | node, |
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508 | order, |
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509 | _Scheduler_EDF_SMP_Extract_from_ready, |
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510 | _Scheduler_EDF_SMP_Get_highest_ready, |
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511 | insert_ready, |
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512 | insert_scheduled, |
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513 | _Scheduler_EDF_SMP_Move_from_ready_to_scheduled, |
---|
514 | _Scheduler_EDF_SMP_Allocate_processor |
---|
515 | ); |
---|
516 | } |
---|
517 | |
---|
518 | static inline bool _Scheduler_EDF_SMP_Enqueue_scheduled_lifo( |
---|
519 | Scheduler_Context *context, |
---|
520 | Scheduler_Node *node |
---|
521 | ) |
---|
522 | { |
---|
523 | return _Scheduler_EDF_SMP_Enqueue_scheduled_ordered( |
---|
524 | context, |
---|
525 | node, |
---|
526 | _Scheduler_SMP_Insert_priority_lifo_order, |
---|
527 | _Scheduler_EDF_SMP_Insert_ready_lifo, |
---|
528 | _Scheduler_SMP_Insert_scheduled_lifo |
---|
529 | ); |
---|
530 | } |
---|
531 | |
---|
532 | static inline bool _Scheduler_EDF_SMP_Enqueue_scheduled_fifo( |
---|
533 | Scheduler_Context *context, |
---|
534 | Scheduler_Node *node |
---|
535 | ) |
---|
536 | { |
---|
537 | return _Scheduler_EDF_SMP_Enqueue_scheduled_ordered( |
---|
538 | context, |
---|
539 | node, |
---|
540 | _Scheduler_SMP_Insert_priority_fifo_order, |
---|
541 | _Scheduler_EDF_SMP_Insert_ready_fifo, |
---|
542 | _Scheduler_SMP_Insert_scheduled_fifo |
---|
543 | ); |
---|
544 | } |
---|
545 | |
---|
546 | void _Scheduler_EDF_SMP_Unblock( |
---|
547 | const Scheduler_Control *scheduler, |
---|
548 | Thread_Control *thread, |
---|
549 | Scheduler_Node *node |
---|
550 | ) |
---|
551 | { |
---|
552 | Scheduler_Context *context = _Scheduler_Get_context( scheduler ); |
---|
553 | |
---|
554 | _Scheduler_SMP_Unblock( |
---|
555 | context, |
---|
556 | thread, |
---|
557 | node, |
---|
558 | _Scheduler_EDF_SMP_Do_update, |
---|
559 | _Scheduler_EDF_SMP_Enqueue_fifo |
---|
560 | ); |
---|
561 | } |
---|
562 | |
---|
563 | static inline bool _Scheduler_EDF_SMP_Do_ask_for_help( |
---|
564 | Scheduler_Context *context, |
---|
565 | Thread_Control *the_thread, |
---|
566 | Scheduler_Node *node |
---|
567 | ) |
---|
568 | { |
---|
569 | return _Scheduler_SMP_Ask_for_help( |
---|
570 | context, |
---|
571 | the_thread, |
---|
572 | node, |
---|
573 | _Scheduler_SMP_Insert_priority_lifo_order, |
---|
574 | _Scheduler_EDF_SMP_Insert_ready_lifo, |
---|
575 | _Scheduler_SMP_Insert_scheduled_lifo, |
---|
576 | _Scheduler_EDF_SMP_Move_from_scheduled_to_ready, |
---|
577 | _Scheduler_EDF_SMP_Get_lowest_scheduled, |
---|
578 | _Scheduler_EDF_SMP_Allocate_processor |
---|
579 | ); |
---|
580 | } |
---|
581 | |
---|
582 | void _Scheduler_EDF_SMP_Update_priority( |
---|
583 | const Scheduler_Control *scheduler, |
---|
584 | Thread_Control *thread, |
---|
585 | Scheduler_Node *node |
---|
586 | ) |
---|
587 | { |
---|
588 | Scheduler_Context *context = _Scheduler_Get_context( scheduler ); |
---|
589 | |
---|
590 | _Scheduler_SMP_Update_priority( |
---|
591 | context, |
---|
592 | thread, |
---|
593 | node, |
---|
594 | _Scheduler_EDF_SMP_Extract_from_ready, |
---|
595 | _Scheduler_EDF_SMP_Do_update, |
---|
596 | _Scheduler_EDF_SMP_Enqueue_fifo, |
---|
597 | _Scheduler_EDF_SMP_Enqueue_lifo, |
---|
598 | _Scheduler_EDF_SMP_Enqueue_scheduled_fifo, |
---|
599 | _Scheduler_EDF_SMP_Enqueue_scheduled_lifo, |
---|
600 | _Scheduler_EDF_SMP_Do_ask_for_help |
---|
601 | ); |
---|
602 | } |
---|
603 | |
---|
604 | bool _Scheduler_EDF_SMP_Ask_for_help( |
---|
605 | const Scheduler_Control *scheduler, |
---|
606 | Thread_Control *the_thread, |
---|
607 | Scheduler_Node *node |
---|
608 | ) |
---|
609 | { |
---|
610 | Scheduler_Context *context = _Scheduler_Get_context( scheduler ); |
---|
611 | |
---|
612 | return _Scheduler_EDF_SMP_Do_ask_for_help( context, the_thread, node ); |
---|
613 | } |
---|
614 | |
---|
615 | void _Scheduler_EDF_SMP_Reconsider_help_request( |
---|
616 | const Scheduler_Control *scheduler, |
---|
617 | Thread_Control *the_thread, |
---|
618 | Scheduler_Node *node |
---|
619 | ) |
---|
620 | { |
---|
621 | Scheduler_Context *context = _Scheduler_Get_context( scheduler ); |
---|
622 | |
---|
623 | _Scheduler_SMP_Reconsider_help_request( |
---|
624 | context, |
---|
625 | the_thread, |
---|
626 | node, |
---|
627 | _Scheduler_EDF_SMP_Extract_from_ready |
---|
628 | ); |
---|
629 | } |
---|
630 | |
---|
631 | void _Scheduler_EDF_SMP_Withdraw_node( |
---|
632 | const Scheduler_Control *scheduler, |
---|
633 | Thread_Control *the_thread, |
---|
634 | Scheduler_Node *node, |
---|
635 | Thread_Scheduler_state next_state |
---|
636 | ) |
---|
637 | { |
---|
638 | Scheduler_Context *context = _Scheduler_Get_context( scheduler ); |
---|
639 | |
---|
640 | _Scheduler_SMP_Withdraw_node( |
---|
641 | context, |
---|
642 | the_thread, |
---|
643 | node, |
---|
644 | next_state, |
---|
645 | _Scheduler_EDF_SMP_Extract_from_ready, |
---|
646 | _Scheduler_EDF_SMP_Get_highest_ready, |
---|
647 | _Scheduler_EDF_SMP_Move_from_ready_to_scheduled, |
---|
648 | _Scheduler_EDF_SMP_Allocate_processor |
---|
649 | ); |
---|
650 | } |
---|
651 | |
---|
652 | static inline void _Scheduler_EDF_SMP_Register_idle( |
---|
653 | Scheduler_Context *context, |
---|
654 | Scheduler_Node *idle_base, |
---|
655 | Per_CPU_Control *cpu |
---|
656 | ) |
---|
657 | { |
---|
658 | Scheduler_EDF_SMP_Context *self; |
---|
659 | Scheduler_EDF_SMP_Node *idle; |
---|
660 | |
---|
661 | self = _Scheduler_EDF_SMP_Get_self( context ); |
---|
662 | idle = _Scheduler_EDF_SMP_Node_downcast( idle_base ); |
---|
663 | _Scheduler_EDF_SMP_Set_scheduled( self, idle, cpu ); |
---|
664 | } |
---|
665 | |
---|
666 | void _Scheduler_EDF_SMP_Add_processor( |
---|
667 | const Scheduler_Control *scheduler, |
---|
668 | Thread_Control *idle |
---|
669 | ) |
---|
670 | { |
---|
671 | Scheduler_Context *context = _Scheduler_Get_context( scheduler ); |
---|
672 | |
---|
673 | _Scheduler_SMP_Add_processor( |
---|
674 | context, |
---|
675 | idle, |
---|
676 | _Scheduler_EDF_SMP_Has_ready, |
---|
677 | _Scheduler_EDF_SMP_Enqueue_scheduled_fifo, |
---|
678 | _Scheduler_EDF_SMP_Register_idle |
---|
679 | ); |
---|
680 | } |
---|
681 | |
---|
682 | Thread_Control *_Scheduler_EDF_SMP_Remove_processor( |
---|
683 | const Scheduler_Control *scheduler, |
---|
684 | Per_CPU_Control *cpu |
---|
685 | ) |
---|
686 | { |
---|
687 | Scheduler_Context *context = _Scheduler_Get_context( scheduler ); |
---|
688 | |
---|
689 | return _Scheduler_SMP_Remove_processor( |
---|
690 | context, |
---|
691 | cpu, |
---|
692 | _Scheduler_EDF_SMP_Extract_from_ready, |
---|
693 | _Scheduler_EDF_SMP_Enqueue_fifo |
---|
694 | ); |
---|
695 | } |
---|
696 | |
---|
697 | void _Scheduler_EDF_SMP_Yield( |
---|
698 | const Scheduler_Control *scheduler, |
---|
699 | Thread_Control *thread, |
---|
700 | Scheduler_Node *node |
---|
701 | ) |
---|
702 | { |
---|
703 | Scheduler_Context *context = _Scheduler_Get_context( scheduler ); |
---|
704 | |
---|
705 | _Scheduler_SMP_Yield( |
---|
706 | context, |
---|
707 | thread, |
---|
708 | node, |
---|
709 | _Scheduler_EDF_SMP_Extract_from_ready, |
---|
710 | _Scheduler_EDF_SMP_Enqueue_fifo, |
---|
711 | _Scheduler_EDF_SMP_Enqueue_scheduled_fifo |
---|
712 | ); |
---|
713 | } |
---|
714 | |
---|
715 | static inline void _Scheduler_EDF_SMP_Do_set_affinity( |
---|
716 | Scheduler_Context *context, |
---|
717 | Scheduler_Node *node_base, |
---|
718 | void *arg |
---|
719 | ) |
---|
720 | { |
---|
721 | Scheduler_EDF_SMP_Node *node; |
---|
722 | const uint32_t *rqi; |
---|
723 | |
---|
724 | node = _Scheduler_EDF_SMP_Node_downcast( node_base ); |
---|
725 | rqi = arg; |
---|
726 | node->ready_queue_index = *rqi; |
---|
727 | } |
---|
728 | |
---|
729 | void _Scheduler_EDF_SMP_Start_idle( |
---|
730 | const Scheduler_Control *scheduler, |
---|
731 | Thread_Control *idle, |
---|
732 | Per_CPU_Control *cpu |
---|
733 | ) |
---|
734 | { |
---|
735 | Scheduler_Context *context; |
---|
736 | |
---|
737 | context = _Scheduler_Get_context( scheduler ); |
---|
738 | |
---|
739 | _Scheduler_SMP_Do_start_idle( |
---|
740 | context, |
---|
741 | idle, |
---|
742 | cpu, |
---|
743 | _Scheduler_EDF_SMP_Register_idle |
---|
744 | ); |
---|
745 | } |
---|
746 | |
---|
747 | bool _Scheduler_EDF_SMP_Set_affinity( |
---|
748 | const Scheduler_Control *scheduler, |
---|
749 | Thread_Control *thread, |
---|
750 | Scheduler_Node *node, |
---|
751 | const Processor_mask *affinity |
---|
752 | ) |
---|
753 | { |
---|
754 | Scheduler_Context *context; |
---|
755 | Processor_mask a; |
---|
756 | Processor_mask b; |
---|
757 | uint32_t rqi; |
---|
758 | |
---|
759 | context = _Scheduler_Get_context( scheduler ); |
---|
760 | _Processor_mask_And( &a, &context->Processors, affinity ); |
---|
761 | |
---|
762 | if ( _Processor_mask_Count( &a ) == 0 ) { |
---|
763 | return false; |
---|
764 | } |
---|
765 | |
---|
766 | _Processor_mask_And( &b, &_SMP_Online_processors, affinity ); |
---|
767 | |
---|
768 | if ( _Processor_mask_Count( &b ) == _SMP_Processor_count ) { |
---|
769 | rqi = 0; |
---|
770 | } else { |
---|
771 | rqi = _Processor_mask_Find_last_set( &a ); |
---|
772 | } |
---|
773 | |
---|
774 | _Scheduler_SMP_Set_affinity( |
---|
775 | context, |
---|
776 | thread, |
---|
777 | node, |
---|
778 | &rqi, |
---|
779 | _Scheduler_EDF_SMP_Do_set_affinity, |
---|
780 | _Scheduler_EDF_SMP_Extract_from_ready, |
---|
781 | _Scheduler_EDF_SMP_Get_highest_ready, |
---|
782 | _Scheduler_EDF_SMP_Move_from_ready_to_scheduled, |
---|
783 | _Scheduler_EDF_SMP_Enqueue_fifo, |
---|
784 | _Scheduler_EDF_SMP_Allocate_processor |
---|
785 | ); |
---|
786 | |
---|
787 | return true; |
---|
788 | } |
---|