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 RTEMSImplClassicRateMonotonic |
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7 | * |
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8 | * @brief This header file provides data structures used by the implementation |
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9 | * and the @ref RTEMSImplApplConfig to define ::_Rate_monotonic_Information. |
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10 | */ |
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11 | |
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12 | /* COPYRIGHT (c) 1989-2009, 2016. |
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13 | * On-Line Applications Research Corporation (OAR). |
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14 | * COPYRIGHT (c) 2016-2017 Kuan-Hsun Chen. |
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15 | * |
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16 | * Redistribution and use in source and binary forms, with or without |
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17 | * modification, are permitted provided that the following conditions |
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18 | * are met: |
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19 | * 1. Redistributions of source code must retain the above copyright |
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20 | * notice, this list of conditions and the following disclaimer. |
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21 | * 2. Redistributions in binary form must reproduce the above copyright |
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22 | * notice, this list of conditions and the following disclaimer in the |
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23 | * documentation and/or other materials provided with the distribution. |
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24 | * |
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25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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26 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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29 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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35 | * POSSIBILITY OF SUCH DAMAGE. |
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36 | */ |
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37 | |
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38 | #ifndef _RTEMS_RTEMS_RATEMONDATA_H |
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39 | #define _RTEMS_RTEMS_RATEMONDATA_H |
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40 | |
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41 | #include <rtems/rtems/ratemon.h> |
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42 | #include <rtems/score/timestamp.h> |
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43 | #include <rtems/score/thread.h> |
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44 | #include <rtems/score/watchdog.h> |
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45 | |
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46 | #ifdef __cplusplus |
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47 | extern "C" { |
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48 | #endif |
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49 | |
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50 | /** |
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51 | * @addtogroup RTEMSImplClassicRateMonotonic |
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52 | * |
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53 | * @{ |
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54 | */ |
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55 | |
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56 | /** |
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57 | * The following defines the INTERNAL data structure that has the |
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58 | * statistics kept on each period instance. |
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59 | */ |
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60 | typedef struct { |
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61 | /** This field contains the number of periods executed. */ |
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62 | uint32_t count; |
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63 | /** This field contains the number of periods missed. */ |
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64 | uint32_t missed_count; |
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65 | |
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66 | /** This field contains the least amount of CPU time used in a period. */ |
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67 | Timestamp_Control min_cpu_time; |
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68 | /** This field contains the highest amount of CPU time used in a period. */ |
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69 | Timestamp_Control max_cpu_time; |
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70 | /** This field contains the total amount of wall time used in a period. */ |
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71 | Timestamp_Control total_cpu_time; |
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72 | |
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73 | /** This field contains the least amount of wall time used in a period. */ |
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74 | Timestamp_Control min_wall_time; |
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75 | /** This field contains the highest amount of wall time used in a period. */ |
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76 | Timestamp_Control max_wall_time; |
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77 | /** This field contains the total amount of CPU time used in a period. */ |
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78 | Timestamp_Control total_wall_time; |
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79 | } Rate_monotonic_Statistics; |
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80 | |
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81 | /** |
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82 | * @brief The following structure defines the control block used to manage each |
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83 | * period. |
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84 | * |
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85 | * State changes are protected by the default thread lock of the owner thread. |
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86 | * The owner thread is the thread that created the period object. The owner |
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87 | * thread field is immutable after object creation. |
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88 | */ |
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89 | typedef struct { |
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90 | /** This field is the object management portion of a Period instance. */ |
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91 | Objects_Control Object; |
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92 | |
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93 | #if defined(RTEMS_SMP) |
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94 | /** |
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95 | * @brief Protects the rate monotonic period state. |
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96 | */ |
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97 | ISR_lock_Control Lock; |
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98 | #endif |
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99 | |
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100 | /** This is the timer used to provide the unblocking mechanism. */ |
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101 | Watchdog_Control Timer; |
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102 | |
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103 | /** This field indicates the current state of the period. */ |
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104 | rtems_rate_monotonic_period_states state; |
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105 | |
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106 | /** |
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107 | * @brief A priority node for use by the scheduler job release and cancel |
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108 | * operations. |
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109 | */ |
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110 | Priority_Node Priority; |
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111 | |
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112 | /** |
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113 | * This field contains the length of the next period to be |
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114 | * executed. |
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115 | */ |
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116 | uint32_t next_length; |
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117 | |
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118 | /** |
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119 | * This field contains a pointer to the TCB for the thread |
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120 | * which owns and uses this period instance. |
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121 | */ |
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122 | Thread_Control *owner; |
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123 | |
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124 | /** |
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125 | * This field contains the cpu usage value of the owning thread when |
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126 | * the period was initiated. It is used to compute the period's |
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127 | * statistics. |
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128 | */ |
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129 | Timestamp_Control cpu_usage_period_initiated; |
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130 | |
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131 | /** |
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132 | * This field contains the wall time value when the period |
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133 | * was initiated. It is used to compute the period's statistics. |
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134 | */ |
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135 | Timestamp_Control time_period_initiated; |
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136 | |
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137 | /** |
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138 | * This field contains the statistics maintained for the period. |
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139 | */ |
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140 | Rate_monotonic_Statistics Statistics; |
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141 | |
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142 | /** |
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143 | * This field contains the number of postponed jobs. |
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144 | * When the watchdog timeout, this variable will be increased immediately. |
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145 | */ |
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146 | uint32_t postponed_jobs; |
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147 | |
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148 | /** |
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149 | * This field contains the tick of the latest deadline decided by the period |
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150 | * watchdog. |
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151 | */ |
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152 | uint64_t latest_deadline; |
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153 | } Rate_monotonic_Control; |
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154 | |
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155 | /** |
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156 | * @brief The Classic Rate Monotonic objects information. |
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157 | */ |
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158 | extern Objects_Information _Rate_monotonic_Information; |
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159 | |
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160 | /** |
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161 | * @brief Macro to define the objects information for the Classic Rate |
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162 | * Monotonic objects. |
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163 | * |
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164 | * This macro should only be used by <rtems/confdefs.h>. |
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165 | * |
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166 | * @param max The configured object maximum (the OBJECTS_UNLIMITED_OBJECTS flag |
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167 | * may be set). |
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168 | */ |
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169 | #define RATE_MONOTONIC_INFORMATION_DEFINE( max ) \ |
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170 | OBJECTS_INFORMATION_DEFINE( \ |
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171 | _Rate_monotonic, \ |
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172 | OBJECTS_CLASSIC_API, \ |
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173 | OBJECTS_RTEMS_PERIODS, \ |
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174 | Rate_monotonic_Control, \ |
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175 | max, \ |
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176 | OBJECTS_NO_STRING_NAME, \ |
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177 | NULL \ |
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178 | ) |
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179 | |
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180 | /** @} */ |
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181 | |
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182 | #ifdef __cplusplus |
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183 | } |
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184 | #endif |
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185 | |
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186 | #endif |
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187 | /* end of include file */ |
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