1 | /* |
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2 | ------------------------------------------------------------------------ |
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3 | $Id$ |
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4 | ------------------------------------------------------------------------ |
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5 | |
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6 | COPYRIGHT (c) 1997 |
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7 | Objective Design Systems Ltd Pty (ODS) |
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8 | All rights reserved (R) Objective Design Systems Ltd Pty |
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9 | |
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10 | The license and distribution terms for this file may be found in the |
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11 | file LICENSE in this distribution or at |
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12 | http://www.OARcorp.com/rtems/license.html. |
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13 | |
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14 | ------------------------------------------------------------------------ |
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15 | |
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16 | See header file. |
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17 | |
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18 | ------------------------------------------------------------------------ |
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19 | */ |
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20 | |
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21 | #include <string.h> |
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22 | #include <rtems++/rtemsTask.h> |
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23 | // include to allow it to be compiled |
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24 | #include <rtems++/rtemsTaskMode.h> |
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25 | |
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26 | /* ---- |
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27 | rtemsTask |
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28 | */ |
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29 | |
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30 | rtemsTask::rtemsTask(const char* tname, |
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31 | const rtems_task_priority initial_priority, |
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32 | const rtems_unsigned32 stack_size, |
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33 | const rtems_mode preemption, |
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34 | const rtems_mode timeslice, |
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35 | const rtems_mode asr, |
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36 | const rtems_interrupt_level interrupt_level, |
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37 | const FloatingPoint floating_point, |
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38 | const Scope scope) |
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39 | : name(rtems_build_name('S', 'E', 'L', 'F')), |
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40 | owner(true), |
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41 | id(RTEMS_SELF), |
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42 | argument(0) |
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43 | { |
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44 | strcpy(name_str, "SELF"); |
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45 | create(tname, |
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46 | initial_priority, |
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47 | stack_size, |
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48 | preemption, |
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49 | timeslice, |
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50 | asr, |
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51 | interrupt_level, |
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52 | floating_point, |
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53 | scope); |
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54 | } |
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55 | |
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56 | rtemsTask::rtemsTask(const char *tname, rtems_unsigned32 node) |
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57 | : name(rtems_build_name('S', 'E', 'L', 'F')), |
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58 | owner(false), |
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59 | id(RTEMS_SELF), |
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60 | argument(0) |
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61 | { |
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62 | strcpy(name_str, "SELF"); |
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63 | connect(tname, node); |
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64 | } |
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65 | |
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66 | rtemsTask::rtemsTask(const rtemsTask& task) |
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67 | : name(rtems_build_name('S', 'E', 'L', 'F')), |
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68 | owner(false), |
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69 | id(RTEMS_SELF), |
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70 | argument(0) |
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71 | { |
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72 | name = task.name; |
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73 | strcpy(name_str, task.name_str); |
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74 | argument = task.argument; |
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75 | id = task.id; |
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76 | } |
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77 | |
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78 | rtemsTask::rtemsTask() |
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79 | : name(rtems_build_name('S', 'E', 'L', 'F')), |
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80 | owner(false), |
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81 | id(RTEMS_SELF), |
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82 | argument(0) |
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83 | { |
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84 | strcpy(name_str, "SELF"); |
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85 | } |
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86 | |
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87 | rtemsTask::~rtemsTask() |
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88 | { |
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89 | destroy(); |
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90 | } |
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91 | |
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92 | void rtemsTask::make_self() |
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93 | { |
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94 | strcpy(name_str, "SELF"); |
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95 | name = rtems_build_name('S', 'E', 'L', 'F'); |
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96 | id = RTEMS_SELF; |
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97 | owner = false; |
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98 | } |
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99 | |
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100 | const rtems_status_code rtemsTask::create(const char* tname, |
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101 | const rtems_task_priority initial_priority, |
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102 | const rtems_unsigned32 stack_size, |
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103 | const rtems_mode preemption, |
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104 | const rtems_mode timeslice, |
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105 | const rtems_mode asr, |
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106 | const rtems_interrupt_level interrupt_level, |
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107 | const FloatingPoint floating_point, |
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108 | const Scope scope) |
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109 | { |
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110 | if (id) |
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111 | return set_status_code(RTEMS_ILLEGAL_ON_SELF); |
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112 | |
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113 | owner = true; |
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114 | |
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115 | strcpy(name_str, " "); |
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116 | for (int c = 0; (c < 4) && (tname[c] != '\0'); c++) |
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117 | name_str[c] = tname[c]; |
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118 | name = rtems_build_name(name_str[0], |
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119 | name_str[1], |
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120 | name_str[2], |
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121 | name_str[3]); |
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122 | |
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123 | // protect the values that be set as the parameters are not enums |
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124 | set_status_code(rtems_task_create(name, |
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125 | initial_priority, |
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126 | stack_size, |
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127 | (preemption & RTEMS_PREEMPT_MASK) | |
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128 | (timeslice & RTEMS_TIMESLICE_MASK) | |
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129 | (asr & RTEMS_ASR_MASK) | |
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130 | (interrupt_level & RTEMS_INTERRUPT_MASK), |
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131 | floating_point | scope, |
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132 | &id)); |
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133 | |
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134 | if (unsuccessful()) |
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135 | { |
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136 | make_self(); |
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137 | } |
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138 | |
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139 | return last_status_code(); |
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140 | } |
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141 | |
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142 | const rtems_status_code rtemsTask::destroy() |
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143 | { |
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144 | if (id && owner) |
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145 | { |
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146 | set_status_code(rtems_task_delete(id)); |
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147 | make_self(); |
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148 | } |
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149 | else |
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150 | set_status_code(RTEMS_NOT_OWNER_OF_RESOURCE); |
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151 | |
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152 | return last_status_code(); |
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153 | } |
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154 | |
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155 | const rtemsTask& rtemsTask::operator=(const rtemsTask& task) |
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156 | { |
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157 | if (!owner) |
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158 | { |
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159 | name = task.name; |
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160 | strcpy(name_str, task.name_str); |
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161 | argument = task.argument; |
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162 | id = task.id; |
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163 | } |
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164 | return *this; |
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165 | } |
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166 | |
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167 | const rtems_status_code rtemsTask::connect(const char *sname, |
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168 | const rtems_unsigned32 node) |
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169 | { |
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170 | if (id && owner) |
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171 | return set_status_code(RTEMS_UNSATISFIED); |
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172 | |
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173 | // change state to not owner |
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174 | owner = false; |
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175 | |
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176 | strcpy(name_str, " "); |
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177 | for (int c = 0; (c < 4) && (sname[c] != '\0'); c++) |
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178 | name_str[c] = sname[c]; |
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179 | name = rtems_build_name(name_str[0], |
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180 | name_str[1], |
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181 | name_str[2], |
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182 | name_str[3]); |
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183 | |
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184 | set_status_code(rtems_task_ident(name, node, &id)); |
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185 | |
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186 | if (unsuccessful()) |
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187 | { |
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188 | make_self(); |
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189 | } |
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190 | |
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191 | return last_status_code(); |
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192 | } |
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193 | |
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194 | const rtems_status_code rtemsTask::start(const rtems_task_argument arg) |
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195 | { |
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196 | if (owner) |
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197 | { |
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198 | argument = arg; |
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199 | // pass the this pointer as the argument |
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200 | set_status_code(rtems_task_start(id, |
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201 | origin, |
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202 | (rtems_task_argument) this)); |
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203 | } |
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204 | else |
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205 | set_status_code(RTEMS_NOT_OWNER_OF_RESOURCE); |
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206 | return last_status_code(); |
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207 | } |
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208 | |
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209 | const rtems_status_code rtemsTask::restart(const rtems_task_argument arg) |
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210 | { |
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211 | if (owner) |
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212 | { |
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213 | argument = arg; |
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214 | set_status_code(rtems_task_restart(id, (rtems_task_argument) this)); |
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215 | } |
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216 | else |
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217 | set_status_code(RTEMS_NOT_OWNER_OF_RESOURCE); |
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218 | |
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219 | return last_status_code(); |
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220 | } |
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221 | |
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222 | const rtems_status_code rtemsTask::suspend() |
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223 | { |
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224 | return set_status_code(rtems_task_suspend(id)); |
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225 | } |
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226 | |
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227 | const rtems_status_code rtemsTask::resume() |
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228 | { |
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229 | return set_status_code(rtems_task_resume(id)); |
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230 | } |
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231 | |
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232 | const rtems_status_code rtemsTask::wake_after(const rtems_interval micro_secs) |
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233 | { |
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234 | rtems_interval usecs = |
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235 | micro_secs && (micro_secs < _TOD_Microseconds_per_tick) ? |
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236 | _TOD_Microseconds_per_tick : micro_secs; |
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237 | return set_status_code(rtems_task_wake_after(TOD_MICROSECONDS_TO_TICKS(usecs))); |
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238 | } |
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239 | |
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240 | const rtems_status_code rtemsTask::wake_when(const rtems_time_of_day& tod) |
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241 | { |
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242 | return set_status_code(rtems_task_wake_when((rtems_time_of_day*) &tod)); |
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243 | } |
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244 | |
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245 | const rtems_status_code rtemsTask::get_priority(rtems_task_priority& priority) |
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246 | { |
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247 | return set_status_code(rtems_task_set_priority(id, |
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248 | RTEMS_CURRENT_PRIORITY, |
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249 | &priority)); |
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250 | } |
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251 | |
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252 | const rtems_status_code rtemsTask::set_priority(const rtems_task_priority priority) |
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253 | { |
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254 | rtems_task_priority old_priority; |
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255 | return set_status_code(rtems_task_set_priority(id, |
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256 | priority, |
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257 | &old_priority)); |
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258 | } |
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259 | |
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260 | const rtems_status_code rtemsTask::set_priority(const rtems_task_priority priority, |
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261 | rtems_task_priority& old_priority) |
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262 | { |
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263 | return set_status_code(rtems_task_set_priority(id, |
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264 | priority, |
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265 | &old_priority)); |
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266 | } |
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267 | |
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268 | const rtems_status_code rtemsTask::get_note(const rtems_unsigned32 notepad, |
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269 | rtems_unsigned32& note) |
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270 | { |
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271 | return set_status_code(rtems_task_get_note(id, notepad, ¬e)); |
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272 | } |
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273 | |
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274 | const rtems_status_code rtemsTask::set_note(const rtems_unsigned32 notepad, |
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275 | const rtems_unsigned32 note) |
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276 | { |
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277 | return set_status_code(rtems_task_set_note(id, notepad, note)); |
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278 | } |
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279 | |
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280 | void rtemsTask::body(rtems_task_argument ) |
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281 | { |
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282 | } |
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283 | |
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284 | rtems_task rtemsTask::origin(rtems_task_argument argument) |
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285 | { |
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286 | rtemsTask *task = (rtemsTask*) argument; |
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287 | task->body(task->argument); |
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288 | } |
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