1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup ScoreSchedulerStrongAPA |
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5 | * |
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6 | * @brief Strong APA Scheduler API |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2013, 2018 embedded brains GmbH. All rights reserved. |
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11 | * |
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12 | * embedded brains GmbH |
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13 | * Dornierstr. 4 |
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14 | * 82178 Puchheim |
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15 | * Germany |
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16 | * <rtems@embedded-brains.de> |
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17 | * |
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18 | * The license and distribution terms for this file may be |
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19 | * found in the file LICENSE in this distribution or at |
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20 | * http://www.rtems.org/license/LICENSE. |
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21 | */ |
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22 | |
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23 | #ifndef _RTEMS_SCORE_SCHEDULERSTRONGAPA_H |
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24 | #define _RTEMS_SCORE_SCHEDULERSTRONGAPA_H |
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25 | |
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26 | #include <rtems/score/scheduler.h> |
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27 | #include <rtems/score/schedulerpriority.h> |
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28 | #include <rtems/score/schedulersmp.h> |
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29 | |
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30 | #ifdef __cplusplus |
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31 | extern "C" { |
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32 | #endif /* __cplusplus */ |
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33 | |
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34 | /** |
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35 | * @defgroup ScoreSchedulerStrongAPA Strong APA Scheduler |
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36 | * |
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37 | * @ingroup ScoreSchedulerSMP |
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38 | * |
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39 | * This is an implementation of the global fixed priority scheduler (G-FP). It |
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40 | * uses one ready chain per priority to ensure constant time insert operations. |
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41 | * The scheduled chain uses linear insert operations and has at most processor |
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42 | * count entries. Since the processor and priority count are constants all |
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43 | * scheduler operations complete in a bounded execution time. |
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44 | * |
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45 | * The the_thread preempt mode will be ignored. |
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46 | * |
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47 | * @{ |
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48 | */ |
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49 | |
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50 | /** |
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51 | * @brief Scheduler context specialization for Strong APA |
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52 | * schedulers. |
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53 | */ |
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54 | typedef struct { |
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55 | Scheduler_SMP_Context Base; |
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56 | Priority_bit_map_Control Bit_map; |
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57 | Chain_Control Ready[ RTEMS_ZERO_LENGTH_ARRAY ]; |
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58 | } Scheduler_strong_APA_Context; |
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59 | |
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60 | /** |
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61 | * @brief Scheduler node specialization for Strong APA |
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62 | * schedulers. |
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63 | */ |
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64 | typedef struct { |
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65 | /** |
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66 | * @brief SMP scheduler node. |
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67 | */ |
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68 | Scheduler_SMP_Node Base; |
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69 | |
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70 | /** |
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71 | * @brief The associated ready queue of this node. |
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72 | */ |
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73 | Scheduler_priority_Ready_queue Ready_queue; |
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74 | } Scheduler_strong_APA_Node; |
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75 | |
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76 | /** |
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77 | * @brief Entry points for the Strong APA Scheduler. |
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78 | */ |
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79 | #define SCHEDULER_STRONG_APA_ENTRY_POINTS \ |
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80 | { \ |
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81 | _Scheduler_strong_APA_Initialize, \ |
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82 | _Scheduler_default_Schedule, \ |
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83 | _Scheduler_strong_APA_Yield, \ |
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84 | _Scheduler_strong_APA_Block, \ |
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85 | _Scheduler_strong_APA_Unblock, \ |
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86 | _Scheduler_strong_APA_Update_priority, \ |
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87 | _Scheduler_default_Map_priority, \ |
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88 | _Scheduler_default_Unmap_priority, \ |
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89 | _Scheduler_strong_APA_Ask_for_help, \ |
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90 | _Scheduler_strong_APA_Reconsider_help_request, \ |
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91 | _Scheduler_strong_APA_Withdraw_node, \ |
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92 | _Scheduler_default_Pin_or_unpin, \ |
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93 | _Scheduler_default_Pin_or_unpin, \ |
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94 | _Scheduler_strong_APA_Add_processor, \ |
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95 | _Scheduler_strong_APA_Remove_processor, \ |
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96 | _Scheduler_strong_APA_Node_initialize, \ |
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97 | _Scheduler_default_Node_destroy, \ |
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98 | _Scheduler_default_Release_job, \ |
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99 | _Scheduler_default_Cancel_job, \ |
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100 | _Scheduler_default_Tick, \ |
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101 | _Scheduler_SMP_Start_idle \ |
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102 | SCHEDULER_OPERATION_DEFAULT_GET_SET_AFFINITY \ |
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103 | } |
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104 | |
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105 | void _Scheduler_strong_APA_Initialize( const Scheduler_Control *scheduler ); |
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106 | |
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107 | void _Scheduler_strong_APA_Node_initialize( |
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108 | const Scheduler_Control *scheduler, |
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109 | Scheduler_Node *node, |
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110 | Thread_Control *the_thread, |
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111 | Priority_Control priority |
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112 | ); |
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113 | |
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114 | void _Scheduler_strong_APA_Block( |
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115 | const Scheduler_Control *scheduler, |
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116 | Thread_Control *the_thread, |
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117 | Scheduler_Node *node |
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118 | ); |
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119 | |
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120 | void _Scheduler_strong_APA_Unblock( |
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121 | const Scheduler_Control *scheduler, |
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122 | Thread_Control *the_thread, |
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123 | Scheduler_Node *node |
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124 | ); |
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125 | |
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126 | void _Scheduler_strong_APA_Update_priority( |
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127 | const Scheduler_Control *scheduler, |
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128 | Thread_Control *the_thread, |
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129 | Scheduler_Node *node |
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130 | ); |
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131 | |
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132 | bool _Scheduler_strong_APA_Ask_for_help( |
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133 | const Scheduler_Control *scheduler, |
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134 | Thread_Control *the_thread, |
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135 | Scheduler_Node *node |
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136 | ); |
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137 | |
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138 | void _Scheduler_strong_APA_Reconsider_help_request( |
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139 | const Scheduler_Control *scheduler, |
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140 | Thread_Control *the_thread, |
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141 | Scheduler_Node *node |
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142 | ); |
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143 | |
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144 | void _Scheduler_strong_APA_Withdraw_node( |
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145 | const Scheduler_Control *scheduler, |
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146 | Thread_Control *the_thread, |
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147 | Scheduler_Node *node, |
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148 | Thread_Scheduler_state next_state |
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149 | ); |
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150 | |
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151 | void _Scheduler_strong_APA_Add_processor( |
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152 | const Scheduler_Control *scheduler, |
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153 | Thread_Control *idle |
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154 | ); |
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155 | |
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156 | Thread_Control *_Scheduler_strong_APA_Remove_processor( |
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157 | const Scheduler_Control *scheduler, |
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158 | struct Per_CPU_Control *cpu |
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159 | ); |
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160 | |
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161 | void _Scheduler_strong_APA_Yield( |
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162 | const Scheduler_Control *scheduler, |
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163 | Thread_Control *the_thread, |
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164 | Scheduler_Node *node |
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165 | ); |
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166 | |
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167 | /** @} */ |
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168 | |
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169 | #ifdef __cplusplus |
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170 | } |
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171 | #endif /* __cplusplus */ |
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172 | |
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173 | #endif /* _RTEMS_SCORE_SCHEDULERSTRONGAPA_H */ |
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