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++/rtemsSemaphore.h> |
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23 | |
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24 | /* ---- |
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25 | rtemsSemaphore |
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26 | */ |
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27 | |
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28 | rtemsSemaphore::rtemsSemaphore(const char* sname, |
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29 | const Scope scope, |
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30 | const rtems_unsigned32 counter, |
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31 | const WaitMode wait_mode, |
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32 | const Type type, |
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33 | const Priority priority, |
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34 | const Ceiling ceiling, |
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35 | const rtems_task_priority priority_ceiling) |
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36 | : name(0), |
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37 | owner(true), |
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38 | id(0) |
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39 | { |
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40 | strcpy(name_str, "NOID"); |
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41 | create(sname, |
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42 | scope, |
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43 | counter, |
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44 | wait_mode, |
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45 | type, |
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46 | priority, |
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47 | ceiling, |
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48 | priority_ceiling); |
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49 | } |
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50 | |
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51 | rtemsSemaphore::rtemsSemaphore(const char *sname, const rtems_unsigned32 node) |
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52 | : name(0), |
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53 | owner(false), |
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54 | id(0) |
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55 | { |
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56 | strcpy(name_str, "NOID"); |
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57 | connect(sname, node); |
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58 | } |
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59 | |
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60 | rtemsSemaphore::rtemsSemaphore(const rtemsSemaphore& semaphore) |
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61 | : name(0), |
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62 | owner(false), |
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63 | id(0) |
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64 | { |
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65 | name = semaphore.name; |
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66 | strcpy(name_str, semaphore.name_str); |
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67 | id = semaphore.id; |
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68 | } |
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69 | |
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70 | rtemsSemaphore::rtemsSemaphore() |
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71 | : name(0), |
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72 | owner(false), |
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73 | id(0) |
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74 | { |
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75 | strcpy(name_str, "NOID"); |
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76 | } |
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77 | |
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78 | rtemsSemaphore::~rtemsSemaphore() |
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79 | { |
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80 | destroy(); |
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81 | } |
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82 | |
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83 | void rtemsSemaphore::make_invalid() |
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84 | { |
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85 | strcpy(name_str, "NOID"); |
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86 | name = 0; |
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87 | id = 0; |
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88 | owner = false; |
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89 | } |
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90 | |
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91 | const rtems_status_code rtemsSemaphore::create(const char* sname, |
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92 | const Scope scope, |
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93 | const rtems_unsigned32 counter, |
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94 | const WaitMode wait_mode, |
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95 | const Type type, |
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96 | const Priority priority, |
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97 | const Ceiling ceiling, |
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98 | const rtems_task_priority priority_ceiling) |
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99 | { |
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100 | if (id) |
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101 | return set_status_code(RTEMS_ILLEGAL_ON_SELF); |
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102 | |
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103 | owner = true; |
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104 | |
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105 | strcpy(name_str, " "); |
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106 | for (int c = 0; (c < 4) && (sname[c] != '\0'); c++) |
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107 | name_str[c] = sname[c]; |
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108 | name = rtems_build_name(name_str[0], |
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109 | name_str[1], |
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110 | name_str[2], |
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111 | name_str[3]); |
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112 | |
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113 | set_status_code(rtems_semaphore_create(name, |
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114 | counter, |
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115 | scope | wait_mode | type | priority | ceiling, |
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116 | priority_ceiling, |
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117 | &id)); |
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118 | |
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119 | if (unsuccessful()) |
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120 | { |
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121 | make_invalid(); |
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122 | } |
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123 | |
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124 | return last_status_code(); |
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125 | } |
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126 | |
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127 | const rtems_status_code rtemsSemaphore::destroy() |
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128 | { |
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129 | if (id && owner) |
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130 | { |
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131 | set_status_code(rtems_semaphore_delete(id)); |
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132 | make_invalid(); |
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133 | } |
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134 | else |
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135 | set_status_code(RTEMS_NOT_OWNER_OF_RESOURCE); |
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136 | |
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137 | return last_status_code(); |
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138 | } |
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139 | |
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140 | const rtemsSemaphore& rtemsSemaphore::operator=(const rtemsSemaphore& semaphore) |
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141 | { |
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142 | if (!owner) |
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143 | { |
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144 | name = semaphore.name; |
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145 | id = semaphore.id; |
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146 | } |
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147 | return *this; |
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148 | } |
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149 | |
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150 | const rtems_status_code rtemsSemaphore::connect(const char *sname, |
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151 | const rtems_unsigned32 node) |
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152 | { |
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153 | if (id && owner) |
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154 | return set_status_code(RTEMS_UNSATISFIED); |
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155 | |
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156 | // change state to not owner |
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157 | owner = false; |
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158 | |
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159 | strcpy(name_str, " "); |
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160 | for (int c = 0; (c < 4) && (sname[c] != '\0'); c++) |
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161 | name_str[c] = sname[c]; |
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162 | name = rtems_build_name(name_str[0], |
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163 | name_str[1], |
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164 | name_str[2], |
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165 | name_str[3]); |
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166 | |
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167 | set_status_code(rtems_semaphore_ident(name, node, &id)); |
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168 | |
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169 | if (unsuccessful()) |
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170 | { |
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171 | make_invalid(); |
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172 | } |
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173 | |
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174 | return last_status_code(); |
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175 | } |
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