Mercurial > hg > nginx
annotate src/os/unix/ngx_process.c @ 318:56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 16 Apr 2004 05:14:16 +0000 |
parents | 6b91bfbc4123 |
children | eaf1f651cf86 |
rev | line source |
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191
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nginx-0.0.1-2003-11-19-19:26:41 import
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1 |
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nginx-0.0.1-2003-11-19-19:26:41 import
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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4 #include <ngx_event.h> |
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5 |
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7 static void ngx_execute_proc(ngx_cycle_t *cycle, void *data); |
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8 |
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9 ngx_uint_t ngx_last_process; |
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10 ngx_process_t ngx_processes[NGX_MAX_PROCESSES]; |
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11 |
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13 ngx_pid_t ngx_spawn_process(ngx_cycle_t *cycle, |
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14 ngx_spawn_proc_pt proc, void *data, |
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15 char *name, ngx_int_t respawn) |
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16 { |
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17 ngx_pid_t pid; |
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18 |
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nginx-0.0.1-2003-11-19-19:26:41 import
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19 pid = fork(); |
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20 |
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21 if (pid == -1) { |
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22 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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23 "fork() failed while spawning \"%s\"", name); |
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24 } |
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25 |
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26 switch (pid) { |
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27 case -1: |
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28 return NGX_ERROR; |
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29 |
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30 case 0: |
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nginx-0.0.2-2004-02-03-19:43:54 import
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31 ngx_pid = ngx_getpid(); |
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32 proc(cycle, data); |
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33 break; |
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34 |
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35 default: |
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nginx-0.0.1-2003-11-25-23:44:56 import
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36 break; |
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37 } |
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39 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0, |
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40 "spawn %s: " PID_T_FMT, name, pid); |
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41 |
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42 if (respawn >= 0) { |
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43 ngx_processes[respawn].pid = pid; |
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44 ngx_processes[respawn].exited = 0; |
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45 return pid; |
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46 } |
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47 |
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48 ngx_processes[ngx_last_process].pid = pid; |
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49 ngx_processes[ngx_last_process].proc = proc; |
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50 ngx_processes[ngx_last_process].data = data; |
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51 ngx_processes[ngx_last_process].name = name; |
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52 ngx_processes[ngx_last_process].exited = 0; |
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53 ngx_processes[ngx_last_process].exiting = 0; |
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54 |
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55 switch (respawn) { |
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56 |
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57 case NGX_PROCESS_RESPAWN: |
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58 ngx_processes[ngx_last_process].respawn = 1; |
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59 ngx_processes[ngx_last_process].just_respawn = 0; |
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60 ngx_processes[ngx_last_process].detached = 0; |
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61 break; |
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62 |
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63 case NGX_PROCESS_JUST_RESPAWN: |
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64 ngx_processes[ngx_last_process].respawn = 1; |
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65 ngx_processes[ngx_last_process].just_respawn = 1; |
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66 ngx_processes[ngx_last_process].detached = 0; |
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67 break; |
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68 |
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69 case NGX_PROCESS_DETACHED: |
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70 ngx_processes[ngx_last_process].respawn = 0; |
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71 ngx_processes[ngx_last_process].just_respawn = 0; |
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72 ngx_processes[ngx_last_process].detached = 1; |
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73 break; |
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74 } |
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75 |
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76 ngx_last_process++; |
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78 return pid; |
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79 } |
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80 |
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81 |
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82 ngx_pid_t ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx) |
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83 { |
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84 return ngx_spawn_process(cycle, ngx_execute_proc, ctx, ctx->name, |
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85 NGX_PROCESS_DETACHED); |
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86 } |
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87 |
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88 |
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89 static void ngx_execute_proc(ngx_cycle_t *cycle, void *data) |
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90 { |
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91 ngx_exec_ctx_t *ctx = data; |
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92 |
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93 if (execve(ctx->path, ctx->argv, ctx->envp) == -1) { |
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94 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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95 "execve() failed while executing %s \"%s\"", |
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96 ctx->name, ctx->path); |
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97 } |
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98 |
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99 exit(1); |
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100 } |
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101 |
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102 |
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103 void ngx_process_get_status() |
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104 { |
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105 int status; |
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106 char *process; |
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107 ngx_pid_t pid; |
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108 ngx_err_t err; |
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109 ngx_uint_t i, one; |
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110 struct timeval tv; |
191
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111 one = 0; |
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112 |
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113 for ( ;; ) { |
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114 pid = waitpid(-1, &status, WNOHANG); |
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115 |
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116 if (pid == 0) { |
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117 return; |
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118 } |
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119 |
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120 if (pid == -1) { |
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121 err = ngx_errno; |
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122 |
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123 if (err == NGX_EINTR) { |
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124 continue; |
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125 } |
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126 |
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127 if (err == NGX_ECHILD && one) { |
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128 return; |
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129 } |
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130 |
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131 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, errno, |
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132 "waitpid() failed"); |
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133 return; |
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134 } |
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135 |
306
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nginx-0.0.3-2004-04-05-00:32:09 import
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136 |
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137 if (ngx_accept_mutex_ptr) { |
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138 |
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139 /* |
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140 * unlock the accept mutex if the abnormally exited process |
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141 * held it |
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142 */ |
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143 |
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144 ngx_atomic_cmp_set(ngx_accept_mutex_ptr, pid, 0); |
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145 } |
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146 |
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147 |
191
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148 one = 1; |
218
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149 process = ""; |
191
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150 |
218
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151 for (i = 0; i < ngx_last_process; i++) { |
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152 if (ngx_processes[i].pid == pid) { |
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153 ngx_processes[i].status = status; |
222
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nginx-0.0.1-2004-01-09-00:02:06 import
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221
diff
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154 ngx_processes[i].exited = 1; |
218
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155 process = ngx_processes[i].name; |
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156 break; |
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157 } |
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158 } |
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159 |
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160 if (i == ngx_last_process) { |
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161 process = "unknown process"; |
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162 } |
191
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parents:
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|
163 |
218
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nginx-0.0.1-2004-01-05-23:55:48 import
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164 if (WTERMSIG(status)) { |
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165 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
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166 "%s " PID_T_FMT " exited on signal %d%s", |
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167 process, pid, WTERMSIG(status), |
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168 WCOREDUMP(status) ? " (core dumped)" : ""); |
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195
diff
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|
169 |
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170 } else { |
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nginx-0.0.1-2004-01-05-23:55:48 import
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195
diff
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|
171 ngx_log_error(NGX_LOG_INFO, ngx_cycle->log, 0, |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
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|
172 "%s " PID_T_FMT " exited with code %d", |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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195
diff
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|
173 process, pid, WEXITSTATUS(status)); |
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nginx-0.0.1-2004-01-05-23:55:48 import
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195
diff
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|
174 } |
234
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nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
175 |
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227
diff
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|
176 if (WEXITSTATUS(status) == 2 && ngx_processes[i].respawn) { |
cd71b95716b4
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227
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|
177 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
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227
diff
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|
178 "%s " PID_T_FMT |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
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parents:
227
diff
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|
179 " exited with fatal code %d and could not respawn", |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
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parents:
227
diff
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|
180 process, pid, WEXITSTATUS(status)); |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
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parents:
227
diff
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|
181 ngx_processes[i].respawn = 0; |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
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|
182 } |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
183 } |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
184 } |