1 | @c |
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2 | @c COPYRIGHT (c) 1988-2002. |
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3 | @c On-Line Applications Research Corporation (OAR). |
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4 | @c All rights reserved. |
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5 | @c |
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6 | @c $Id$ |
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7 | @c |
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8 | |
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9 | @chapter Process Creation and Execution Manager |
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10 | |
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11 | @section Introduction |
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12 | |
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13 | The process creation and execution manager is ... |
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14 | |
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15 | The directives provided by the process creation and execution manager are: |
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16 | |
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17 | @itemize @bullet |
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18 | @item @code{fork} - Create a Process |
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19 | @item @code{execl} - Execute a File |
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20 | @item @code{execv} - Execute a File |
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21 | @item @code{execle} - Execute a File |
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22 | @item @code{execve} - Execute a File |
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23 | @item @code{execlp} - Execute a File |
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24 | @item @code{execvp} - Execute a File |
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25 | @item @code{pthread_atfork} - Register Fork Handlers |
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26 | @item @code{wait} - Wait for Process Termination |
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27 | @item @code{waitpid} - Wait for Process Termination |
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28 | @item @code{_exit} - Terminate a Process |
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29 | @end itemize |
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30 | |
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31 | @section Background |
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32 | |
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33 | There is currently no text in this section. |
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34 | |
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35 | @section Operations |
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36 | |
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37 | There is currently no text in this section. |
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38 | |
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39 | @section Directives |
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40 | |
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41 | This section details the process creation and execution manager's directives. |
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42 | A subsection is dedicated to each of this manager's directives |
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43 | and describes the calling sequence, related constants, usage, |
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44 | and status codes. |
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45 | |
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46 | @c |
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47 | @c |
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48 | @c |
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49 | @page |
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50 | @subsection fork - Create a Process |
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51 | |
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52 | @findex fork |
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53 | @cindex create a process |
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54 | |
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55 | @subheading CALLING SEQUENCE: |
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56 | |
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57 | @ifset is-C |
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58 | @example |
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59 | #include <sys/types.h> |
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60 | |
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61 | int fork( void ); |
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62 | @end example |
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63 | @end ifset |
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64 | |
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65 | @ifset is-Ada |
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66 | @end ifset |
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67 | |
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68 | @subheading STATUS CODES: |
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69 | |
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70 | @table @b |
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71 | @item ENOSYS |
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72 | This routine is not supported by RTEMS. |
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73 | |
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74 | @end table |
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75 | |
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76 | @subheading DESCRIPTION: |
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77 | |
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78 | This routine is not supported by RTEMS. |
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79 | |
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80 | @subheading NOTES: |
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81 | |
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82 | NONE |
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83 | |
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84 | @c |
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85 | @c |
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86 | @c |
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87 | @page |
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88 | @subsection execl - Execute a File |
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89 | |
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90 | @findex execl |
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91 | @cindex execute a file |
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92 | |
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93 | @subheading CALLING SEQUENCE: |
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94 | |
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95 | @ifset is-C |
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96 | @example |
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97 | int execl( |
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98 | const char *path, |
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99 | const char *arg, |
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100 | ... |
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101 | ); |
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102 | @end example |
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103 | @end ifset |
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104 | |
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105 | @ifset is-Ada |
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106 | @end ifset |
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107 | |
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108 | @subheading STATUS CODES: |
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109 | |
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110 | @table @b |
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111 | @item ENOSYS |
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112 | This routine is not supported by RTEMS. |
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113 | |
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114 | @end table |
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115 | |
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116 | @subheading DESCRIPTION: |
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117 | |
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118 | This routine is not supported by RTEMS. |
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119 | |
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120 | @subheading NOTES: |
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121 | |
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122 | NONE |
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123 | |
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124 | @c |
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125 | @c |
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126 | @c |
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127 | @page |
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128 | @subsection execv - Execute a File |
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129 | |
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130 | @findex execv |
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131 | @cindex execute a file |
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132 | |
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133 | @subheading CALLING SEQUENCE: |
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134 | |
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135 | @ifset is-C |
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136 | @example |
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137 | int execv( |
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138 | const char *path, |
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139 | char const *argv[], |
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140 | ... |
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141 | ); |
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142 | @end example |
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143 | @end ifset |
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144 | |
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145 | @ifset is-Ada |
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146 | @end ifset |
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147 | |
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148 | @subheading STATUS CODES: |
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149 | |
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150 | @table @b |
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151 | @item ENOSYS |
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152 | This routine is not supported by RTEMS. |
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153 | |
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154 | @end table |
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155 | |
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156 | @subheading DESCRIPTION: |
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157 | |
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158 | This routine is not supported by RTEMS. |
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159 | |
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160 | @subheading NOTES: |
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161 | |
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162 | NONE |
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163 | |
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164 | @c |
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165 | @c |
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166 | @c |
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167 | @page |
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168 | @subsection execle - Execute a File |
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169 | |
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170 | @findex execle |
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171 | @cindex execute a file |
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172 | |
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173 | @subheading CALLING SEQUENCE: |
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174 | |
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175 | @ifset is-C |
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176 | @example |
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177 | int execle( |
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178 | const char *path, |
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179 | const char *arg, |
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180 | ... |
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181 | ); |
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182 | @end example |
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183 | @end ifset |
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184 | |
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185 | @ifset is-Ada |
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186 | @end ifset |
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187 | |
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188 | @subheading STATUS CODES: |
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189 | |
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190 | @table @b |
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191 | @item ENOSYS |
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192 | This routine is not supported by RTEMS. |
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193 | |
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194 | @end table |
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195 | |
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196 | @subheading DESCRIPTION: |
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197 | |
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198 | This routine is not supported by RTEMS. |
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199 | |
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200 | @subheading NOTES: |
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201 | |
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202 | NONE |
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203 | |
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204 | @c |
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205 | @c |
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206 | @c |
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207 | @page |
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208 | @subsection execve - Execute a File |
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209 | |
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210 | @findex execve |
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211 | @cindex execute a file |
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212 | |
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213 | @subheading CALLING SEQUENCE: |
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214 | |
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215 | @ifset is-C |
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216 | @example |
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217 | int execve( |
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218 | const char *path, |
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219 | char *const argv[], |
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220 | char *const envp[] |
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221 | ); |
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222 | @end example |
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223 | @end ifset |
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224 | |
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225 | @ifset is-Ada |
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226 | @end ifset |
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227 | |
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228 | @subheading STATUS CODES: |
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229 | |
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230 | @table @b |
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231 | @item ENOSYS |
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232 | This routine is not supported by RTEMS. |
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233 | |
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234 | @end table |
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235 | |
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236 | @subheading DESCRIPTION: |
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237 | |
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238 | This routine is not supported by RTEMS. |
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239 | |
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240 | @subheading NOTES: |
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241 | |
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242 | NONE |
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243 | |
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244 | @c |
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245 | @c |
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246 | @c |
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247 | @page |
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248 | @subsection execlp - Execute a File |
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249 | |
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250 | @findex execlp |
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251 | @cindex execute a file |
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252 | |
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253 | @subheading CALLING SEQUENCE: |
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254 | |
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255 | @ifset is-C |
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256 | @example |
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257 | int execlp( |
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258 | const char *file, |
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259 | const char *arg, |
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260 | ... |
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261 | ); |
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262 | @end example |
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263 | @end ifset |
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264 | |
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265 | @ifset is-Ada |
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266 | @end ifset |
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267 | |
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268 | @subheading STATUS CODES: |
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269 | |
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270 | @table @b |
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271 | @item ENOSYS |
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272 | This routine is not supported by RTEMS. |
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273 | |
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274 | @end table |
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275 | |
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276 | @subheading DESCRIPTION: |
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277 | |
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278 | This routine is not supported by RTEMS. |
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279 | |
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280 | @subheading NOTES: |
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281 | |
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282 | NONE |
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283 | |
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284 | @c |
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285 | @c |
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286 | @c |
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287 | @page |
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288 | @subsection execvp - Execute a File |
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289 | |
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290 | @findex execvp |
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291 | @cindex execute a file |
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292 | |
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293 | @subheading CALLING SEQUENCE: |
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294 | |
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295 | @ifset is-C |
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296 | @example |
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297 | int execvp( |
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298 | const char *file, |
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299 | char *const argv[] |
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300 | ... |
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301 | ); |
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302 | @end example |
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303 | @end ifset |
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304 | |
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305 | @ifset is-Ada |
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306 | @end ifset |
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307 | |
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308 | @subheading STATUS CODES: |
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309 | |
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310 | @table @b |
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311 | @item ENOSYS |
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312 | This routine is not supported by RTEMS. |
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313 | |
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314 | @end table |
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315 | |
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316 | @subheading DESCRIPTION: |
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317 | |
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318 | This routine is not supported by RTEMS. |
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319 | |
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320 | @subheading NOTES: |
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321 | |
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322 | NONE |
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323 | |
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324 | @c |
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325 | @c |
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326 | @c |
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327 | @page |
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328 | @subsection pthread_atfork - Register Fork Handlers |
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329 | |
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330 | @findex pthread_atfork |
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331 | @cindex register fork handlers |
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332 | |
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333 | @subheading CALLING SEQUENCE: |
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334 | |
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335 | @ifset is-C |
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336 | @example |
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337 | #include <sys/types.h> |
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338 | |
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339 | int pthread_atfork( |
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340 | void (*prepare)(void), |
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341 | void (*parent)(void), |
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342 | void (*child)(void) |
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343 | ); |
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344 | @end example |
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345 | @end ifset |
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346 | |
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347 | @ifset is-Ada |
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348 | @end ifset |
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349 | |
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350 | @subheading STATUS CODES: |
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351 | |
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352 | @table @b |
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353 | @item ENOSYS |
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354 | This routine is not supported by RTEMS. |
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355 | |
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356 | @end table |
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357 | |
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358 | @subheading DESCRIPTION: |
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359 | |
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360 | This routine is not supported by RTEMS. |
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361 | |
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362 | @subheading NOTES: |
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363 | |
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364 | NONE |
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365 | |
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366 | @c |
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367 | @c |
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368 | @c |
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369 | @page |
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370 | @subsection wait - Wait for Process Termination |
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371 | |
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372 | @findex wait |
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373 | @cindex wait for process termination |
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374 | |
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375 | @subheading CALLING SEQUENCE: |
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376 | |
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377 | @ifset is-C |
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378 | @example |
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379 | #include <sys/types.h> |
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380 | #include <sys/wait.h> |
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381 | |
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382 | int wait( |
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383 | int *stat_loc |
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384 | ); |
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385 | @end example |
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386 | @end ifset |
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387 | |
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388 | @ifset is-Ada |
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389 | @end ifset |
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390 | |
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391 | @subheading STATUS CODES: |
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392 | |
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393 | @table @b |
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394 | @item ENOSYS |
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395 | This routine is not supported by RTEMS. |
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396 | |
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397 | @end table |
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398 | |
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399 | @subheading DESCRIPTION: |
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400 | |
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401 | This routine is not supported by RTEMS. |
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402 | |
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403 | @subheading NOTES: |
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404 | |
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405 | NONE |
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406 | |
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407 | @c |
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408 | @c |
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409 | @c |
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410 | @page |
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411 | @subsection waitpid - Wait for Process Termination |
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412 | |
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413 | @findex waitpid |
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414 | @cindex wait for process termination |
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415 | |
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416 | @subheading CALLING SEQUENCE: |
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417 | |
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418 | @ifset is-C |
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419 | @example |
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420 | int wait( |
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421 | pid_t pid, |
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422 | int *stat_loc, |
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423 | int options |
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424 | ); |
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425 | @end example |
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426 | @end ifset |
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427 | |
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428 | @ifset is-Ada |
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429 | @end ifset |
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430 | |
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431 | @subheading STATUS CODES: |
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432 | |
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433 | @table @b |
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434 | @item ENOSYS |
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435 | This routine is not supported by RTEMS. |
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436 | |
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437 | @end table |
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438 | |
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439 | @subheading DESCRIPTION: |
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440 | |
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441 | This routine is not supported by RTEMS. |
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442 | |
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443 | @subheading NOTES: |
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444 | |
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445 | NONE |
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446 | |
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447 | @c |
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448 | @c |
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449 | @c |
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450 | @page |
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451 | @subsection _exit - Terminate a Process |
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452 | |
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453 | @findex _exit |
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454 | @cindex terminate a process |
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455 | |
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456 | @subheading CALLING SEQUENCE: |
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457 | |
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458 | @ifset is-C |
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459 | @example |
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460 | void _exit( |
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461 | int status |
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462 | ); |
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463 | @end example |
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464 | @end ifset |
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465 | |
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466 | @ifset is-Ada |
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467 | @end ifset |
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468 | |
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469 | @subheading STATUS CODES: |
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470 | |
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471 | NONE |
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472 | |
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473 | @subheading DESCRIPTION: |
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474 | |
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475 | The @code{_exit()} function terminates the calling process. |
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476 | |
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477 | @subheading NOTES: |
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478 | |
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479 | In RTEMS, a process is equivalent to the entire application on a single |
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480 | processor. Invoking this service terminates the application. |
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