1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Capture Engine Component of the RTEMS Measurement and |
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5 | * Monitoring System |
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6 | * |
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7 | * This is the Capture Engine component of the RTEMS Measurement and |
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8 | * Monitoring system. |
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9 | */ |
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10 | |
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11 | /* |
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12 | ------------------------------------------------------------------------ |
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13 | |
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14 | Copyright 2002, 2016 Chris Johns <chrisj@rtems.org>. |
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15 | All rights reserved. |
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16 | |
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17 | COPYRIGHT (c) 1989-2014 |
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18 | On-Line Applications Research Corporation (OAR). |
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19 | |
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20 | The license and distribution terms for this file may be |
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21 | found in the file LICENSE in this distribution. |
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22 | |
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23 | This software with is provided ``as is'' and with NO WARRANTY. |
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24 | |
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25 | ------------------------------------------------------------------------ |
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26 | |
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27 | RTEMS Performance Monitoring and Measurement Framework. |
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28 | This is the Capture Engine component. |
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29 | |
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30 | */ |
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31 | |
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32 | #ifndef __CAPTURE_H_ |
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33 | #define __CAPTURE_H_ |
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34 | |
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35 | #include <rtems.h> |
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36 | #include <rtems/rtems/tasksimpl.h> |
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37 | |
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38 | #include <string.h> |
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39 | |
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40 | /** |
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41 | * @defgroup libmisc_capture RTEMS Capture Engine |
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42 | * |
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43 | * @ingroup RTEMSAPITracing |
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44 | * |
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45 | * Capture Engine Component of the RTEMS Measurement and Monitoring System |
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46 | */ |
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47 | /**@{*/ |
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48 | #ifdef __cplusplus |
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49 | extern "C" { |
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50 | #endif |
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51 | |
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52 | /* |
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53 | * Global capture flags. |
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54 | */ |
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55 | #define RTEMS_CAPTURE_INIT (1u << 0) |
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56 | #define RTEMS_CAPTURE_ON (1U << 1) |
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57 | #define RTEMS_CAPTURE_NO_MEMORY (1U << 2) |
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58 | #define RTEMS_CAPTURE_TRIGGERED (1U << 3) |
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59 | #define RTEMS_CAPTURE_GLOBAL_WATCH (1U << 4) |
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60 | #define RTEMS_CAPTURE_ONLY_MONITOR (1U << 5) |
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61 | |
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62 | /* |
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63 | * Per-CPU capture flags. |
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64 | */ |
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65 | #define RTEMS_CAPTURE_OVERFLOW (1U << 0) |
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66 | #define RTEMS_CAPTURE_READER_ACTIVE (1U << 1) |
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67 | #define RTEMS_CAPTURE_READER_WAITING (1U << 2) |
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68 | |
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69 | /** |
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70 | * The number of tasks in a trigger group. |
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71 | */ |
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72 | #define RTEMS_CAPTURE_TRIGGER_TASKS (32) |
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73 | |
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74 | /** |
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75 | * @brief A capture timestamp. |
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76 | * |
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77 | * This is a nanosecond capture timestamp |
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78 | */ |
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79 | typedef uint64_t rtems_capture_time; |
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80 | |
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81 | /** |
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82 | * @brief Task id and mask for the from trigger. |
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83 | * |
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84 | * A from capture is a task id and a mask for the type of |
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85 | * from trigger we are interested in. The mask uses the same |
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86 | * bit maps as the flags field in the control structure. There |
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87 | * will only be a from type trigger if the flags in the control |
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88 | * structure has the specific *_BY bit set. |
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89 | */ |
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90 | typedef struct rtems_capture_from |
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91 | { |
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92 | rtems_name name; |
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93 | rtems_id id; |
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94 | uint32_t trigger; |
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95 | } rtems_capture_from; |
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96 | |
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97 | /** |
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98 | * @brief Capture control structure for a group of tasks. |
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99 | * |
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100 | * RTEMS control holds the trigger and watch configuration for a group of |
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101 | * tasks with the same name. The flags hold global control flags. |
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102 | * |
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103 | * The to_triggers fields holds triggers TO this task. The from_triggers holds |
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104 | * triggers from this task. The by_triggers is an OR or triggers which are |
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105 | * caused BY the task listed TO this task. The by_valid flag which entries |
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106 | * in by are valid. |
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107 | */ |
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108 | typedef struct rtems_capture_control |
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109 | { |
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110 | rtems_name name; |
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111 | rtems_id id; |
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112 | uint32_t flags; |
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113 | uint32_t to_triggers; |
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114 | uint32_t from_triggers; |
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115 | uint32_t by_triggers; |
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116 | uint32_t by_valid; |
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117 | rtems_capture_from by[RTEMS_CAPTURE_TRIGGER_TASKS]; |
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118 | struct rtems_capture_control* next; |
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119 | } rtems_capture_control; |
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120 | |
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121 | /** |
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122 | * The from_valid mask. |
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123 | */ |
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124 | #define RTEMS_CAPTURE_CONTROL_FROM_MASK(_s) \ |
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125 | (UINT32_C(1) << (RTEMS_CAPTURE_TRIGGER_TASKS - ((_s) + 1))) |
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126 | |
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127 | /** |
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128 | * Control flags. |
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129 | */ |
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130 | #define RTEMS_CAPTURE_WATCH (1U << 0) |
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131 | |
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132 | /** |
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133 | * Control triggers. |
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134 | */ |
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135 | #define RTEMS_CAPTURE_SWITCH (1 << 0) |
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136 | #define RTEMS_CAPTURE_CREATE (1 << 1) |
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137 | #define RTEMS_CAPTURE_START (1 << 2) |
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138 | #define RTEMS_CAPTURE_RESTART (1 << 3) |
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139 | #define RTEMS_CAPTURE_DELETE (1 << 4) |
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140 | #define RTEMS_CAPTURE_BEGIN (1 << 5) |
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141 | #define RTEMS_CAPTURE_EXITTED (1 << 6) |
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142 | #define RTEMS_CAPTURE_TERMINATED (1 << 7) |
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143 | |
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144 | #define RTEMS_CAPTURE_FROM_TRIGS (RTEMS_CAPTURE_SWITCH | \ |
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145 | RTEMS_CAPTURE_CREATE | \ |
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146 | RTEMS_CAPTURE_START | \ |
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147 | RTEMS_CAPTURE_RESTART | \ |
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148 | RTEMS_CAPTURE_DELETE) |
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149 | |
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150 | #define RTEMS_CAPTURE_TO_TRIGS (RTEMS_CAPTURE_SWITCH | \ |
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151 | RTEMS_CAPTURE_CREATE | \ |
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152 | RTEMS_CAPTURE_START | \ |
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153 | RTEMS_CAPTURE_RESTART | \ |
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154 | RTEMS_CAPTURE_DELETE | \ |
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155 | RTEMS_CAPTURE_BEGIN | \ |
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156 | RTEMS_CAPTURE_EXITTED) |
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157 | |
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158 | /** |
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159 | * Task flags. |
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160 | */ |
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161 | #define RTEMS_CAPTURE_TRACED (1U << 0) |
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162 | #define RTEMS_CAPTURE_INIT_TASK (1U << 1) |
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163 | #define RTEMS_CAPTURE_RECORD_TASK (1U << 2) |
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164 | |
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165 | /* |
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166 | * @brief Capture record. |
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167 | * |
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168 | * This is a record that is written into |
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169 | * the buffer. The events includes the priority of the task |
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170 | * at the time of the context switch. |
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171 | */ |
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172 | typedef struct rtems_capture_record |
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173 | { |
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174 | size_t size; |
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175 | uint32_t events; |
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176 | rtems_id task_id; |
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177 | rtems_capture_time time; |
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178 | } RTEMS_PACKED rtems_capture_record; |
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179 | |
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180 | /* |
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181 | * @brief Capture task record. |
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182 | * |
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183 | * This is a record that is written into |
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184 | * the buffer. The events includes the priority of the task |
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185 | * at the time of the context switch. |
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186 | */ |
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187 | typedef struct rtems_capture_task_record |
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188 | { |
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189 | rtems_name name; |
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190 | rtems_task_priority start_priority; |
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191 | uint32_t stack_size; |
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192 | } RTEMS_PACKED rtems_capture_task_record; |
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193 | |
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194 | /** |
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195 | * The capture record event flags. |
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196 | */ |
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197 | #define RTEMS_CAPTURE_REAL_PRI_EVENT_MASK UINT32_C (0x000000ff) |
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198 | #define RTEMS_CAPTURE_CURR_PRI_EVENT_MASK UINT32_C (0x0000ff00) |
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199 | #define RTEMS_CAPTURE_REAL_PRIORITY_EVENT (0) |
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200 | #define RTEMS_CAPTURE_CURR_PRIORITY_EVENT (8) |
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201 | #define RTEMS_CAPTURE_EVENT_START (16) |
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202 | #define RTEMS_CAPTURE_CREATED_BY_EVENT UINT32_C (0x00010000) |
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203 | #define RTEMS_CAPTURE_CREATED_EVENT UINT32_C (0x00020000) |
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204 | #define RTEMS_CAPTURE_STARTED_BY_EVENT UINT32_C (0x00040000) |
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205 | #define RTEMS_CAPTURE_STARTED_EVENT UINT32_C (0x00080000) |
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206 | #define RTEMS_CAPTURE_RESTARTED_BY_EVENT UINT32_C (0x00100000) |
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207 | #define RTEMS_CAPTURE_RESTARTED_EVENT UINT32_C (0x00200000) |
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208 | #define RTEMS_CAPTURE_DELETED_BY_EVENT UINT32_C (0x00400000) |
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209 | #define RTEMS_CAPTURE_DELETED_EVENT UINT32_C (0x00800000) |
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210 | #define RTEMS_CAPTURE_TERMINATED_EVENT UINT32_C (0x01000000) |
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211 | #define RTEMS_CAPTURE_BEGIN_EVENT UINT32_C (0x02000000) |
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212 | #define RTEMS_CAPTURE_EXITTED_EVENT UINT32_C (0x04000000) |
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213 | #define RTEMS_CAPTURE_SWITCHED_OUT_EVENT UINT32_C (0x08000000) |
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214 | #define RTEMS_CAPTURE_SWITCHED_IN_EVENT UINT32_C (0x10000000) |
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215 | #define RTEMS_CAPTURE_TIMESTAMP UINT32_C (0x20000000) |
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216 | #define RTEMS_CAPTURE_EVENT_END (29) |
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217 | |
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218 | /** |
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219 | * @brief Capture trigger modes |
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220 | * |
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221 | * The types of trigger modes that exist. |
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222 | */ |
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223 | typedef enum rtems_capture_trigger_mode |
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224 | { |
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225 | rtems_capture_to_any, |
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226 | rtems_capture_from_any, |
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227 | rtems_capture_from_to |
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228 | } rtems_capture_trigger_mode; |
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229 | |
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230 | /** |
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231 | * @brief Capture trigger. |
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232 | * |
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233 | * The types of triggers that exist. |
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234 | */ |
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235 | typedef enum rtems_capture_trigger |
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236 | { |
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237 | rtems_capture_switch, |
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238 | rtems_capture_create, |
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239 | rtems_capture_start, |
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240 | rtems_capture_restart, |
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241 | rtems_capture_delete, |
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242 | rtems_capture_begin, |
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243 | rtems_capture_exitted, |
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244 | rtems_capture_terminated |
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245 | } rtems_capture_trigger; |
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246 | |
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247 | /** |
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248 | * @brief Capture timestamp callout handler. |
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249 | * |
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250 | * This defines the callout handler to obtain a time stamp. The |
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251 | * value returned is time count since the last read. |
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252 | * |
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253 | */ |
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254 | |
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255 | typedef void (*rtems_capture_timestamp)(rtems_capture_time* time); |
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256 | |
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257 | /** |
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258 | * @brief Capture record lock context. |
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259 | * |
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260 | * This structure is used to lock a per CPU buffer when opeining recording. The |
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261 | * per CPU buffer is held locked until the record close is called. Locking |
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262 | * masks interrupts so use this lock only when needed and do not hold it for |
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263 | * long. |
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264 | * |
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265 | * The lock first masks the CPU interrupt before taking the interrupt |
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266 | * lock. This stops a thread context taking the lock and then an interrupt on |
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267 | * the same CPU attempting to take the lock so creating a deadlock. |
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268 | * |
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269 | */ |
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270 | typedef struct { |
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271 | rtems_interrupt_lock_context lock_context; |
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272 | rtems_interrupt_lock* lock; |
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273 | } rtems_capture_record_lock_context; |
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274 | |
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275 | /** |
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276 | * @brief Capture open |
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277 | * |
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278 | * This function initialises the realtime trace manager allocating the |
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279 | * capture buffer. It is assumed we have a working heap at stage of |
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280 | * initialisation. |
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281 | * |
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282 | * @param[in] size The number of capture records to define. |
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283 | * @param[in] timestamp The timestamp callout handler to use. If the |
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284 | * the handler is NULL a default nano-second timestamp |
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285 | * will be used. |
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286 | * |
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287 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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288 | * error. Otherwise, a status code is returned indicating the |
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289 | * source of the error. |
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290 | */ |
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291 | rtems_status_code rtems_capture_open (uint32_t size, |
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292 | rtems_capture_timestamp timestamp); |
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293 | |
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294 | /** |
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295 | * @brief Capture close |
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296 | * |
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297 | * This function shutdowns the tracer and release any claimed |
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298 | * resources. |
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299 | * |
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300 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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301 | * error. Otherwise, a status code is returned indicating the |
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302 | * source of the error. |
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303 | */ |
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304 | rtems_status_code rtems_capture_close (void); |
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305 | |
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306 | /** |
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307 | * @brief Capture control trace enable/disable. |
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308 | * |
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309 | * This function allows control of tracing at a global level. |
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310 | * |
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311 | * @param[in] enable The trace enable/disable flag. |
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312 | * |
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313 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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314 | * error. Otherwise, a status code is returned indicating the |
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315 | * source of the error. |
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316 | */ |
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317 | rtems_status_code rtems_capture_set_control (bool enable); |
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318 | |
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319 | /** |
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320 | * @brief Capture monitor enable/disable. |
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321 | * |
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322 | * This function enable the monitor mode. When in the monitor mode |
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323 | * the tasks are monitored but no data is saved. This can be used |
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324 | * to profile the load on a system. |
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325 | * |
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326 | * @param[in] enable The monitor enable/disable flag. |
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327 | * |
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328 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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329 | * error. Otherwise, a status code is returned indicating the |
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330 | * source of the error. |
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331 | */ |
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332 | rtems_status_code rtems_capture_set_monitor (bool enable); |
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333 | |
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334 | /* |
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335 | * @brief Capture flush trace buffer. |
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336 | * |
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337 | * This function flushes the trace buffer. The prime parameter allows the |
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338 | * capture engine to also be primed again. |
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339 | * |
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340 | * @param[in] prime The prime after flush flag. |
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341 | * |
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342 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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343 | * error. Otherwise, a status code is returned indicating the |
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344 | * source of the error. |
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345 | */ |
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346 | rtems_status_code rtems_capture_flush (bool prime); |
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347 | |
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348 | /** |
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349 | * @brief Capture add watch |
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350 | * |
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351 | * This function defines a watch for a specific task given a name. A watch |
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352 | * causes it to be traced either in or out of context. The watch can be |
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353 | * optionally enabled or disabled with the set routine. It is disabled by |
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354 | * default. |
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355 | * |
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356 | * @param[in] name The name of the @a capture_controls entry |
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357 | * @param[in] id The id of the @a capture_controls entry. |
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358 | * |
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359 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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360 | * error. Otherwise, a status code is returned indicating the |
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361 | * source of the error. |
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362 | */ |
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363 | rtems_status_code rtems_capture_watch_add (rtems_name name, rtems_id id); |
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364 | |
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365 | /** |
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366 | * @brief Capture delete watch. |
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367 | * |
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368 | * This function removes a watch for a specific task given a name. The task |
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369 | * description will still exist if referenced by a trace record in the trace |
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370 | * buffer or a global watch is defined. |
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371 | * |
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372 | * @param[in] name The name of the @a capture_controls entry |
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373 | * @param[in] id The id of the @a capture_controls entry. |
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374 | * |
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375 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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376 | * error. Otherwise, a status code is returned indicating the |
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377 | * source of the error. |
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378 | */ |
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379 | rtems_status_code rtems_capture_watch_del (rtems_name name, rtems_id id); |
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380 | |
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381 | /** |
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382 | * @brief Capture enable/disable watch. |
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383 | * |
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384 | * This function allows control of a watch. The watch can be enabled or |
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385 | * disabled. |
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386 | * |
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387 | * @param[in] name The name of the @a capture_controls entry |
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388 | * @param[in] id The id of the @a capture_controls entry. |
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389 | * @param[in] enable The enable/disable flag for the watch. |
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390 | * |
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391 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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392 | * error. Otherwise, a status code is returned indicating the |
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393 | * source of the error. |
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394 | */ |
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395 | rtems_status_code rtems_capture_watch_ctrl (rtems_name name, |
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396 | rtems_id id, |
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397 | bool enable); |
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398 | |
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399 | /** |
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400 | * @brief Capture enable/disable global watch. |
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401 | * |
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402 | * This function allows control of a global watch. The watch can |
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403 | * be enabled or disabled. A global watch configures all tasks below |
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404 | * the ceiling and above the floor to be traced. |
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405 | * |
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406 | * @param[in] enable The enable/disable flag for the watch. |
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407 | * |
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408 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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409 | * error. Otherwise, a status code is returned indicating the |
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410 | * source of the error. |
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411 | */ |
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412 | rtems_status_code rtems_capture_watch_global (bool enable); |
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413 | |
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414 | /** |
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415 | * @brief Get global watch state |
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416 | * |
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417 | * This function returns the global watch state. |
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418 | * |
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419 | * @retval This method returns true if the global watch |
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420 | * is on. Otherwise, it returns false. |
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421 | */ |
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422 | bool rtems_capture_watch_global_on (void); |
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423 | |
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424 | /** |
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425 | * @brief Set watch ceiling. |
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426 | * |
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427 | * This function sets a watch ceiling. Events from tasks at or greater |
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428 | * than the ceiling priority are ignored. This is a simple way to |
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429 | * monitor an application and exclude system tasks running at a higher |
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430 | * priority level. |
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431 | * |
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432 | * @param[in] ceiling specifies the priority level immediately above |
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433 | * that at which events from tasks are not captured. |
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434 | * |
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435 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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436 | * error. Otherwise, a status code is returned indicating the |
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437 | * source of the error. |
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438 | */ |
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439 | rtems_status_code rtems_capture_watch_ceiling (rtems_task_priority ceiling); |
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440 | |
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441 | /** |
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442 | * @brief Get watch ceiling. |
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443 | * |
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444 | * This function gets the watch ceiling. |
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445 | * |
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446 | * @retval The priority level immediately above that at which events |
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447 | * from tasks are not captured. |
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448 | */ |
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449 | rtems_task_priority rtems_capture_watch_get_ceiling (void); |
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450 | |
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451 | /** |
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452 | * @brief Capture set watch floor. |
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453 | * |
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454 | * This function sets a watch floor. Tasks at or less than the |
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455 | * floor priority are not watched. This is a simple way to monitor |
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456 | * an application and exclude system tasks running at a lower |
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457 | * priority level. |
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458 | * |
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459 | * @param[in] floor specifies the priority level immediately below |
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460 | * that at which events from tasks are not captured. |
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461 | * |
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462 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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463 | * error. Otherwise, a status code is returned indicating the |
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464 | * source of the error. |
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465 | */ |
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466 | rtems_status_code rtems_capture_watch_floor (rtems_task_priority floor); |
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467 | |
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468 | /** |
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469 | * @brief Capture set watch floor |
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470 | * |
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471 | * This function gets the watch floor. |
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472 | * |
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473 | * @retval The priority level immediately below |
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474 | * that at which events from tasks are not captured. |
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475 | */ |
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476 | rtems_task_priority rtems_capture_watch_get_floor (void); |
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477 | |
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478 | /** |
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479 | * @brief Capture set trigger |
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480 | * |
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481 | * This function sets a trigger. |
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482 | * |
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483 | * This set trigger routine will create a trace control for the |
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484 | * target task. The task list is searched and any existing tasks |
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485 | * are linked to the new control. |
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486 | * |
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487 | * We can have a number of tasks that have the same name so we |
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488 | * search using names. This means a number of tasks can be |
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489 | * linked to single control. |
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490 | * |
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491 | * Some events captured such as context switch include two |
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492 | * tasks. These are referred to as being "from" and "to" |
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493 | * Some events may only have one task specified. |
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494 | * |
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495 | * @param[in] from_name specifies the name of the from task. |
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496 | * @param[in] from_id specifies the id of the from task. |
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497 | * @param[in] to_name specifies the name of the to task. |
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498 | * @param[in] to_id specifies the id of the to task. |
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499 | * @param[in] mode specifies the trigger mode. |
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500 | * @param[in] trigger specifies the type of trigger. |
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501 | * |
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502 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
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503 | * error. Otherwise, a status code is returned indicating the |
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504 | * source of the error. |
---|
505 | */ |
---|
506 | rtems_status_code |
---|
507 | rtems_capture_set_trigger (rtems_name from_name, |
---|
508 | rtems_id from_id, |
---|
509 | rtems_name to_name, |
---|
510 | rtems_id to_id, |
---|
511 | rtems_capture_trigger_mode mode, |
---|
512 | rtems_capture_trigger trigger); |
---|
513 | |
---|
514 | /** |
---|
515 | * @brief Capture clear trigger. |
---|
516 | * |
---|
517 | * This function clears a trigger. |
---|
518 | * |
---|
519 | * This clear trigger routine will not clear a watch. |
---|
520 | * |
---|
521 | * @param[in] from_name specifies the name of the from task. |
---|
522 | * @param[in] from_id specifies the id of the from task. |
---|
523 | * @param[in] to_name specifies the name of the to task. |
---|
524 | * @param[in] to_id specifies the id of the to task. |
---|
525 | * @param[in] mode specifies the trigger mode. |
---|
526 | * @param[in] trigger specifies the type of trigger. |
---|
527 | * |
---|
528 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
---|
529 | * error. Otherwise, a status code is returned indicating the |
---|
530 | * source of the error. |
---|
531 | */ |
---|
532 | rtems_status_code |
---|
533 | rtems_capture_clear_trigger (rtems_name from_name, |
---|
534 | rtems_id from_id, |
---|
535 | rtems_name to_name, |
---|
536 | rtems_id to_id, |
---|
537 | rtems_capture_trigger_mode mode, |
---|
538 | rtems_capture_trigger trigger); |
---|
539 | |
---|
540 | /** |
---|
541 | * @brief Capture read records from capture buffer |
---|
542 | * |
---|
543 | * This function reads a number of records from the capture buffer. |
---|
544 | * |
---|
545 | * The function returns the number of record that is has that are |
---|
546 | * in a continous block of memory. If the number of available records |
---|
547 | * wrap then only those records are provided. This removes the need for |
---|
548 | * caller to be concerned about buffer wrappings. If the number of |
---|
549 | * requested records cannot be met due to the wrapping of the records |
---|
550 | * less than the specified number will be returned. |
---|
551 | * |
---|
552 | * The user must release the records. This is achieved with a call to |
---|
553 | * rtems_capture_release. Calls this function without a release will |
---|
554 | * result in at least the same number of records being released. |
---|
555 | * |
---|
556 | * @param[in] cpu The cpu number that the records were recorded on |
---|
557 | * @param[out] read will contain the number of records read |
---|
558 | * @param[out] recs The capture records that are read. |
---|
559 | * |
---|
560 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
---|
561 | * error. Otherwise, a status code is returned indicating the |
---|
562 | * source of the error. |
---|
563 | */ |
---|
564 | rtems_status_code rtems_capture_read (uint32_t cpu, |
---|
565 | size_t* read, |
---|
566 | const void** recs); |
---|
567 | |
---|
568 | /** |
---|
569 | * @brief Capture release records. |
---|
570 | * |
---|
571 | * This function releases the requested number of record slots back |
---|
572 | * to the capture engine. The count must match the number read. |
---|
573 | * |
---|
574 | * @param[in] count The number of record slots to release |
---|
575 | * |
---|
576 | * @retval This method returns RTEMS_SUCCESSFUL if there was not an |
---|
577 | * error. Otherwise, a status code is returned indicating the |
---|
578 | * source of the error. |
---|
579 | */ |
---|
580 | rtems_status_code rtems_capture_release (uint32_t cpu, uint32_t count); |
---|
581 | |
---|
582 | /** |
---|
583 | * @brief Capture filter |
---|
584 | * |
---|
585 | * This function this function specifies if the given task and events should be |
---|
586 | * logged. |
---|
587 | * |
---|
588 | * @param[in] task specifies the capture task control block |
---|
589 | * @param[in] events specifies the events |
---|
590 | * |
---|
591 | * @retval This method returns true if this data should be filtered from the |
---|
592 | * log. It returns false if this data should be logged. |
---|
593 | */ |
---|
594 | bool rtems_capture_filter (rtems_tcb* task, uint32_t events); |
---|
595 | |
---|
596 | /** |
---|
597 | * @brief Capture returns the current time. |
---|
598 | * |
---|
599 | * This function returns the current time. If a handler is provided |
---|
600 | * by the user the time is gotten from that. |
---|
601 | * |
---|
602 | * @param[in] time specifies the capture time |
---|
603 | * |
---|
604 | * @retval This method returns a nano-second time if no user handler |
---|
605 | * is provided. Otherwise, it returns a resolution defined by the handler. |
---|
606 | */ |
---|
607 | void rtems_capture_get_time (rtems_capture_time* time); |
---|
608 | |
---|
609 | /** |
---|
610 | * @brief Capture get event text. |
---|
611 | * |
---|
612 | * This function returns a string for an event based on the bit in the |
---|
613 | * event. The functions takes the bit offset as a number not the bit |
---|
614 | * set in a bit map. |
---|
615 | * |
---|
616 | * @param[in] event specifies the event to describe |
---|
617 | * |
---|
618 | * @retval This method returns a string description of the given event. |
---|
619 | */ |
---|
620 | const char* rtems_capture_event_text (int event); |
---|
621 | |
---|
622 | /** |
---|
623 | * @brief Capture initialize task |
---|
624 | * |
---|
625 | * This function initializes capture control in the tcb. |
---|
626 | * |
---|
627 | * @param[in] tcb is the task control block for the task |
---|
628 | */ |
---|
629 | void rtems_capture_initialize_task (rtems_tcb* tcb); |
---|
630 | |
---|
631 | /** |
---|
632 | * @brief Capture record task. |
---|
633 | * |
---|
634 | * This function records a new capture task record. |
---|
635 | * |
---|
636 | * @param[in] tcb is the task control block for the task |
---|
637 | */ |
---|
638 | void rtems_capture_record_task (rtems_tcb* tcb); |
---|
639 | |
---|
640 | /** |
---|
641 | * @brief Capture record lock. |
---|
642 | * |
---|
643 | * This does a lock acquire which will remain in effect until |
---|
644 | * rtems_capture_record_unlock is called. |
---|
645 | * |
---|
646 | * @param[out] context specifies the record context |
---|
647 | */ |
---|
648 | void rtems_capture_record_lock (rtems_capture_record_lock_context* context); |
---|
649 | |
---|
650 | /** |
---|
651 | * @brief Capture record unlock. |
---|
652 | * |
---|
653 | * This unlocks the record lock. |
---|
654 | * |
---|
655 | * @param[in] context specifies the record context |
---|
656 | */ |
---|
657 | void rtems_capture_record_unlock (rtems_capture_record_lock_context* context); |
---|
658 | |
---|
659 | /** |
---|
660 | * @brief Capture record open. |
---|
661 | * |
---|
662 | * This function allocates a record and fills in the header information. It |
---|
663 | * does a lock acquire which will remain in effect until |
---|
664 | * rtems_capture_record_close is called. The size is the amount of user data |
---|
665 | * being recorded. The record header is internally managed. |
---|
666 | * |
---|
667 | * @param[in] task specifies the caputre task block |
---|
668 | * @param[in] events specifies the events |
---|
669 | * @param[in] size specifies the user's capture data size |
---|
670 | * @param[out] context specifies the record context |
---|
671 | * |
---|
672 | * @retval This method returns a pointer to the next location in |
---|
673 | * the capture record to store data. |
---|
674 | */ |
---|
675 | void* rtems_capture_record_open (rtems_tcb* task, |
---|
676 | uint32_t events, |
---|
677 | size_t size, |
---|
678 | rtems_capture_record_lock_context* context); |
---|
679 | |
---|
680 | /** |
---|
681 | * @brief Capture record close. |
---|
682 | * |
---|
683 | * This function closes writing to capure record and releases the lock that was |
---|
684 | * held on the per CPU buffer. |
---|
685 | * |
---|
686 | * @param[out] context specifies the record context |
---|
687 | */ |
---|
688 | void rtems_capture_record_close (rtems_capture_record_lock_context* context); |
---|
689 | |
---|
690 | /** |
---|
691 | * @brief Capture append to record to the per CPU buffer. |
---|
692 | * |
---|
693 | * This function appends data of a specifed size into a capture buffer. |
---|
694 | * |
---|
695 | * @param[in] rec specifies the next write point in the capture record |
---|
696 | * @param[in] data specifies the data to write |
---|
697 | * @param[in] size specifies the size of the data |
---|
698 | * |
---|
699 | * @retval This method returns the next write point in the capture record. |
---|
700 | */ |
---|
701 | static inline void* |
---|
702 | rtems_capture_record_append (void* rec, const void* data, size_t size) |
---|
703 | { |
---|
704 | memcpy (rec, data, size); |
---|
705 | return ((uint8_t*) rec) + size; |
---|
706 | } |
---|
707 | |
---|
708 | /** |
---|
709 | * @brief Capture read a record from the per CPU buffer. |
---|
710 | * |
---|
711 | * This function reads data of a specifed size from a capture buffer. |
---|
712 | * |
---|
713 | * @param[in] rec specifies the next read point in the capture record |
---|
714 | * @param[in] data specifies where to write the data |
---|
715 | * @param[in] size specifies the size of the data |
---|
716 | * |
---|
717 | * @retval This method returns the next write point in the capture record. |
---|
718 | */ |
---|
719 | static inline void* |
---|
720 | rtems_capture_record_extract (const void* rec, void* data, size_t size) |
---|
721 | { |
---|
722 | memcpy (data, rec, size); |
---|
723 | return ((uint8_t*) rec) + size; |
---|
724 | } |
---|
725 | |
---|
726 | /** |
---|
727 | * @brief Capture task recorded |
---|
728 | * |
---|
729 | * This function returns true if this task information has been |
---|
730 | * recorded. |
---|
731 | * |
---|
732 | * @param[in] tcb is the task control block for the task |
---|
733 | */ |
---|
734 | static inline bool rtems_capture_task_recorded (rtems_tcb* tcb) { |
---|
735 | return ((tcb->Capture.flags & RTEMS_CAPTURE_RECORD_TASK) != 0); |
---|
736 | } |
---|
737 | |
---|
738 | /** |
---|
739 | * @brief Capture task initialized |
---|
740 | * |
---|
741 | * This function returns true if this task information has been |
---|
742 | * initialized. |
---|
743 | * |
---|
744 | * @param[in] tcb is the task control block for the task |
---|
745 | */ |
---|
746 | static inline bool rtems_capture_task_initialized (rtems_tcb* tcb) { |
---|
747 | return ((tcb->Capture.flags & RTEMS_CAPTURE_INIT_TASK) != 0); |
---|
748 | } |
---|
749 | |
---|
750 | /** |
---|
751 | * @brief Capture get task id. |
---|
752 | * |
---|
753 | * This function returns the task id. |
---|
754 | * |
---|
755 | * @param[in] task The capture task. |
---|
756 | * |
---|
757 | * @retval This function returns the task id. |
---|
758 | */ |
---|
759 | static inline rtems_id |
---|
760 | rtems_capture_task_id (rtems_tcb* tcb) |
---|
761 | { |
---|
762 | return tcb->Object.id; |
---|
763 | } |
---|
764 | |
---|
765 | /** |
---|
766 | * @brief Capture get task API. |
---|
767 | * |
---|
768 | * This function returns the task API as an int. |
---|
769 | * |
---|
770 | * @param[in] task The capture task. |
---|
771 | * |
---|
772 | * @retval This function returns the task API as an int. |
---|
773 | */ |
---|
774 | static inline int |
---|
775 | rtems_capture_task_api (rtems_id id) |
---|
776 | { |
---|
777 | return _Objects_Get_API (id); |
---|
778 | } |
---|
779 | |
---|
780 | /** |
---|
781 | * @brief Capture get task state. |
---|
782 | * |
---|
783 | * This function returns the task state. |
---|
784 | * |
---|
785 | * @param[in] task The capture task. |
---|
786 | * |
---|
787 | * @retval This function returns the task state. |
---|
788 | */ |
---|
789 | static inline States_Control |
---|
790 | rtems_capture_task_state (rtems_tcb* tcb) |
---|
791 | { |
---|
792 | if (tcb) |
---|
793 | return tcb->current_state; |
---|
794 | return 0; |
---|
795 | } |
---|
796 | |
---|
797 | /** |
---|
798 | * @brief Capture get task name. |
---|
799 | * |
---|
800 | * This function returns the task name. |
---|
801 | * |
---|
802 | * @param[in] task The capture task. |
---|
803 | * |
---|
804 | * @retval This function returns the task name. |
---|
805 | */ |
---|
806 | static inline rtems_name |
---|
807 | rtems_capture_task_name (rtems_tcb* tcb) |
---|
808 | { |
---|
809 | rtems_name name; |
---|
810 | rtems_object_get_classic_name( tcb->Object.id, &name ); |
---|
811 | return name; |
---|
812 | } |
---|
813 | |
---|
814 | /** |
---|
815 | * @brief Capture get task flags. |
---|
816 | * |
---|
817 | * This function returns the task flags. |
---|
818 | * |
---|
819 | * @param[in] task The capture task. |
---|
820 | * |
---|
821 | * @retval This function returns the task flags. |
---|
822 | */ |
---|
823 | static inline uint32_t |
---|
824 | rtems_capture_task_flags (rtems_tcb* tcb) |
---|
825 | { |
---|
826 | return tcb->Capture.flags; |
---|
827 | } |
---|
828 | |
---|
829 | /** |
---|
830 | * @brief Capture get task control |
---|
831 | * |
---|
832 | * This function returns the task control if present. |
---|
833 | * |
---|
834 | * @param[in] task The capture task. |
---|
835 | * |
---|
836 | * @retval This function returns the task control if present. |
---|
837 | */ |
---|
838 | static inline rtems_capture_control* |
---|
839 | rtems_capture_task_control (rtems_tcb* tcb) |
---|
840 | { |
---|
841 | return (rtems_capture_control*) tcb->Capture.control; |
---|
842 | } |
---|
843 | |
---|
844 | /** |
---|
845 | * @brief Capture get task control flags. |
---|
846 | * |
---|
847 | * This function returns the task control flags if a control is present. |
---|
848 | * |
---|
849 | * @param[in] task The capture task. |
---|
850 | * |
---|
851 | * @retval This function returns the task control flags if a control is present. |
---|
852 | */ |
---|
853 | static inline uint32_t |
---|
854 | rtems_capture_task_control_flags (rtems_tcb* tcb) |
---|
855 | { |
---|
856 | rtems_capture_control* control = rtems_capture_task_control (tcb); |
---|
857 | if (!control) |
---|
858 | return 0; |
---|
859 | return control->flags; |
---|
860 | } |
---|
861 | |
---|
862 | /** |
---|
863 | * @brief Capture get task start priority. |
---|
864 | * |
---|
865 | * This function returns the tasks start priority. The tracer needs this |
---|
866 | * to track where the task's priority goes. |
---|
867 | * |
---|
868 | * @param[in] task The capture task. |
---|
869 | * |
---|
870 | * @retval This function returns the tasks start priority. The tracer needs this |
---|
871 | * to track where the task's priority goes. |
---|
872 | */ |
---|
873 | static inline rtems_task_priority |
---|
874 | rtems_capture_task_start_priority (rtems_tcb* tcb) |
---|
875 | { |
---|
876 | return _RTEMS_Priority_From_core (_Thread_Scheduler_get_home( tcb ), |
---|
877 | tcb->Start.initial_priority); |
---|
878 | } |
---|
879 | |
---|
880 | /** |
---|
881 | * @brief Capture get task real priority. |
---|
882 | * |
---|
883 | * This function returns the tasks real priority. |
---|
884 | * |
---|
885 | * @param[in] task The capture task. |
---|
886 | * |
---|
887 | * @retval This function returns the tasks real priority. |
---|
888 | */ |
---|
889 | static inline rtems_task_priority |
---|
890 | rtems_capture_task_real_priority (rtems_tcb* tcb) |
---|
891 | { |
---|
892 | return _Thread_Get_unmapped_real_priority (tcb); |
---|
893 | } |
---|
894 | |
---|
895 | /** |
---|
896 | * @brief Capture get task current priority. |
---|
897 | * |
---|
898 | * This function returns the tasks current priority. |
---|
899 | * |
---|
900 | * @param[in] task The capture task. |
---|
901 | * |
---|
902 | * @retval This function returns the tasks current priority. |
---|
903 | */ |
---|
904 | static inline rtems_task_priority |
---|
905 | rtems_capture_task_curr_priority (rtems_tcb* tcb) |
---|
906 | { |
---|
907 | return _Thread_Get_unmapped_priority (tcb); |
---|
908 | } |
---|
909 | |
---|
910 | /** |
---|
911 | * @brief Capture get control list. |
---|
912 | * |
---|
913 | * This function returns the head of the list of controls in the |
---|
914 | * capture engine. |
---|
915 | * |
---|
916 | * @retval This function returns the head of the list of controls in the |
---|
917 | * capture engine. |
---|
918 | */ |
---|
919 | rtems_capture_control* |
---|
920 | rtems_capture_get_control_list (void); |
---|
921 | |
---|
922 | /** |
---|
923 | * @brief Capture get next capture control. |
---|
924 | * |
---|
925 | * This function returns the pointer to the next control in the list. The |
---|
926 | * pointer NULL terminates the list. |
---|
927 | * |
---|
928 | * @param[in] control the current capture control. |
---|
929 | * |
---|
930 | * @retval This function returns the pointer to the next control in the list. The |
---|
931 | * pointer NULL terminates the list. |
---|
932 | */ |
---|
933 | static inline rtems_capture_control* |
---|
934 | rtems_capture_next_control (rtems_capture_control* control) |
---|
935 | { |
---|
936 | return control->next; |
---|
937 | } |
---|
938 | |
---|
939 | /** |
---|
940 | * @brief Capture get capture control id. |
---|
941 | * |
---|
942 | * This function returns the control id. |
---|
943 | * |
---|
944 | * @param[in] control the capture control. |
---|
945 | * |
---|
946 | * @retval This function returns the control id. |
---|
947 | */ |
---|
948 | static inline rtems_id |
---|
949 | rtems_capture_control_id (rtems_capture_control* control) |
---|
950 | { |
---|
951 | return control->id; |
---|
952 | } |
---|
953 | |
---|
954 | /** |
---|
955 | * @brief Capture get capture control name. |
---|
956 | * |
---|
957 | * This function returns the control name. |
---|
958 | * |
---|
959 | * @param[in] control the capture control. |
---|
960 | * |
---|
961 | * @retval This function returns the control name. |
---|
962 | */ |
---|
963 | static inline rtems_name |
---|
964 | rtems_capture_control_name (rtems_capture_control* control) |
---|
965 | { |
---|
966 | return control->name; |
---|
967 | } |
---|
968 | |
---|
969 | /** |
---|
970 | * @brief Capture get capture control flags. |
---|
971 | * |
---|
972 | * This function returns the control flags. |
---|
973 | * |
---|
974 | * @param[in] control the capture control. |
---|
975 | * |
---|
976 | * @retval This function returns the control flags. |
---|
977 | */ |
---|
978 | static inline uint32_t |
---|
979 | rtems_capture_control_flags (rtems_capture_control* control) |
---|
980 | { |
---|
981 | return control->flags; |
---|
982 | } |
---|
983 | |
---|
984 | /** |
---|
985 | * @brief Capture get capture control to triggers. |
---|
986 | * |
---|
987 | * This function returns the task control to triggers. |
---|
988 | * |
---|
989 | * @param[in] control the capture control. |
---|
990 | * |
---|
991 | * @retval This function returns the task control to triggers. |
---|
992 | */ |
---|
993 | static inline uint32_t |
---|
994 | rtems_capture_control_to_triggers (rtems_capture_control* control) |
---|
995 | { |
---|
996 | return control->to_triggers; |
---|
997 | } |
---|
998 | |
---|
999 | /** |
---|
1000 | * @brief Capture get capture control from triggers. |
---|
1001 | * |
---|
1002 | * This function returns the task control from triggers. |
---|
1003 | * |
---|
1004 | * @param[in] control the capture control. |
---|
1005 | * |
---|
1006 | * @retval This function returns the task control from triggers. |
---|
1007 | */ |
---|
1008 | static inline uint32_t |
---|
1009 | rtems_capture_control_from_triggers (rtems_capture_control* control) |
---|
1010 | { |
---|
1011 | return control->from_triggers; |
---|
1012 | } |
---|
1013 | |
---|
1014 | /** |
---|
1015 | * @brief Capture get capture control by triggers. |
---|
1016 | * |
---|
1017 | * This function returns the task control by triggers. |
---|
1018 | * |
---|
1019 | * @param[in] control the capture control. |
---|
1020 | * |
---|
1021 | * @retval This function returns the task control by triggers. |
---|
1022 | */ |
---|
1023 | static inline uint32_t |
---|
1024 | rtems_capture_control_all_by_triggers (rtems_capture_control* control) |
---|
1025 | { |
---|
1026 | return control->by_triggers; |
---|
1027 | } |
---|
1028 | |
---|
1029 | /** |
---|
1030 | * @brief Capture get capture control valid by flags. |
---|
1031 | * |
---|
1032 | * This function returns the control valid BY flags. |
---|
1033 | * |
---|
1034 | * @param[in] control The capture control. |
---|
1035 | * @param[in] slot The slot. |
---|
1036 | * |
---|
1037 | * @retval This function returns the control valid BY flags. |
---|
1038 | */ |
---|
1039 | static inline int |
---|
1040 | rtems_capture_control_by_valid (rtems_capture_control* control, int slot) |
---|
1041 | { |
---|
1042 | return control->by_valid & RTEMS_CAPTURE_CONTROL_FROM_MASK (slot); |
---|
1043 | } |
---|
1044 | |
---|
1045 | /** |
---|
1046 | * @brief Capture get capture control by task name. |
---|
1047 | * |
---|
1048 | * This function returns the control @a by task name. |
---|
1049 | * |
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1050 | * @param[in] control The capture control. |
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1051 | * @param[in] by The by index. |
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1052 | * |
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1053 | * @retval This function returns the control @a by task name. |
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1054 | */ |
---|
1055 | static inline rtems_name |
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1056 | rtems_capture_control_by_name (rtems_capture_control* control, int by) |
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1057 | { |
---|
1058 | if (by < RTEMS_CAPTURE_TRIGGER_TASKS) |
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1059 | return control->by[by].name; |
---|
1060 | return control->by[0].name; |
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1061 | } |
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1062 | |
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1063 | /** |
---|
1064 | * @brief Capture get capture control by task id. |
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1065 | * |
---|
1066 | * This function returns the control @a by task id |
---|
1067 | * |
---|
1068 | * @retval This function returns the control @a by task id. |
---|
1069 | */ |
---|
1070 | static inline rtems_id |
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1071 | rtems_capture_control_by_id (rtems_capture_control* control, int by) |
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1072 | { |
---|
1073 | if (by < RTEMS_CAPTURE_TRIGGER_TASKS) |
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1074 | return control->by[by].id; |
---|
1075 | return control->by[0].id; |
---|
1076 | } |
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1077 | |
---|
1078 | /** |
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1079 | * @brief Capture get capture control by task triggers. |
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1080 | * |
---|
1081 | * This function returns the control @a by task triggers. |
---|
1082 | * |
---|
1083 | * @retval This function returns the control @a by task triggers. |
---|
1084 | */ |
---|
1085 | static inline uint32_t |
---|
1086 | rtems_capture_control_by_triggers (rtems_capture_control* control, |
---|
1087 | int by) |
---|
1088 | { |
---|
1089 | if (by < RTEMS_CAPTURE_TRIGGER_TASKS) |
---|
1090 | return control->by[by].trigger; |
---|
1091 | return control->by[0].trigger; |
---|
1092 | } |
---|
1093 | |
---|
1094 | /** |
---|
1095 | * @brief Capture get capture control count. |
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1096 | * |
---|
1097 | * This function returns the number of controls the capture |
---|
1098 | * engine has. |
---|
1099 | * |
---|
1100 | * @retval This function returns the number of controls the capture |
---|
1101 | * engine has. |
---|
1102 | */ |
---|
1103 | static inline uint32_t |
---|
1104 | rtems_capture_control_count (void) |
---|
1105 | { |
---|
1106 | rtems_capture_control* control = rtems_capture_get_control_list (); |
---|
1107 | uint32_t count = 0; |
---|
1108 | |
---|
1109 | while (control) |
---|
1110 | { |
---|
1111 | count++; |
---|
1112 | control = rtems_capture_next_control (control); |
---|
1113 | } |
---|
1114 | |
---|
1115 | return count; |
---|
1116 | } |
---|
1117 | |
---|
1118 | #ifdef __cplusplus |
---|
1119 | } |
---|
1120 | #endif |
---|
1121 | /**@}*/ |
---|
1122 | |
---|
1123 | #endif |
---|