Mercurial > hg > nginx
annotate src/os/unix/ngx_process.c @ 279:b79f021a644a
nginx-0.0.2-2004-03-04-19:34:23 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 04 Mar 2004 16:34:23 +0000 |
parents | d4e65d74db9f |
children | 6b91bfbc4123 |
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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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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4 |
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6 static void ngx_execute_proc(ngx_cycle_t *cycle, void *data); |
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7 |
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8 ngx_uint_t ngx_last_process; |
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9 ngx_process_t ngx_processes[NGX_MAX_PROCESSES]; |
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10 |
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12 ngx_pid_t ngx_spawn_process(ngx_cycle_t *cycle, |
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13 ngx_spawn_proc_pt proc, void *data, |
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14 char *name, ngx_int_t respawn) |
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15 { |
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16 ngx_pid_t pid; |
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17 |
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18 pid = fork(); |
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20 if (pid == -1) { |
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21 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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22 "fork() failed while spawning \"%s\"", name); |
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23 } |
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24 |
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25 switch (pid) { |
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26 case -1: |
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27 return NGX_ERROR; |
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28 |
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29 case 0: |
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30 ngx_pid = ngx_getpid(); |
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31 proc(cycle, data); |
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32 break; |
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33 |
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34 default: |
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35 break; |
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36 } |
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37 |
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38 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0, |
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39 "spawn %s: " PID_T_FMT, name, pid); |
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40 |
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41 if (respawn >= 0) { |
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42 ngx_processes[respawn].pid = pid; |
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43 ngx_processes[respawn].exited = 0; |
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44 return pid; |
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45 } |
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46 |
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47 ngx_processes[ngx_last_process].pid = pid; |
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48 ngx_processes[ngx_last_process].proc = proc; |
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49 ngx_processes[ngx_last_process].data = data; |
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50 ngx_processes[ngx_last_process].name = name; |
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51 ngx_processes[ngx_last_process].respawn = |
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52 (respawn == NGX_PROCESS_RESPAWN) ? 1 : 0; |
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53 ngx_processes[ngx_last_process].detached = |
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54 (respawn == NGX_PROCESS_DETACHED) ? 1 : 0; |
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55 ngx_processes[ngx_last_process].exited = 0; |
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56 ngx_processes[ngx_last_process].exiting = 0; |
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57 ngx_last_process++; |
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58 |
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59 return pid; |
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60 } |
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61 |
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62 |
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63 ngx_pid_t ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx) |
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64 { |
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65 return ngx_spawn_process(cycle, ngx_execute_proc, ctx, ctx->name, |
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66 NGX_PROCESS_DETACHED); |
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67 } |
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68 |
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70 static void ngx_execute_proc(ngx_cycle_t *cycle, void *data) |
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71 { |
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72 ngx_exec_ctx_t *ctx = data; |
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73 |
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74 if (execve(ctx->path, ctx->argv, ctx->envp) == -1) { |
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75 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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76 "execve() failed while executing %s \"%s\"", |
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77 ctx->name, ctx->path); |
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78 } |
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79 |
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80 exit(1); |
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81 } |
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82 |
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83 |
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84 void ngx_respawn_processes(ngx_cycle_t *cycle) |
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85 { |
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86 ngx_uint_t i; |
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87 |
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88 for (i = 0; i < ngx_last_process; i++) { |
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89 |
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90 if (ngx_processes[i].exiting || !ngx_processes[i].exited) { |
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91 continue; |
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92 } |
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93 |
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94 if (!ngx_processes[i].respawn) { |
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95 if (i != --ngx_last_process) { |
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96 ngx_processes[i--] = ngx_processes[ngx_last_process]; |
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97 } |
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98 continue; |
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99 } |
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100 |
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101 if (ngx_spawn_process(cycle, |
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102 ngx_processes[i].proc, ngx_processes[i].data, |
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103 ngx_processes[i].name, i) == NGX_ERROR) |
401154e21826
nginx-0.0.1-2004-01-08-20:08:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
220
diff
changeset
|
104 { |
401154e21826
nginx-0.0.1-2004-01-08-20:08:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
220
diff
changeset
|
105 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, |
401154e21826
nginx-0.0.1-2004-01-08-20:08:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
220
diff
changeset
|
106 "can not respawn %s", ngx_processes[i].name); |
401154e21826
nginx-0.0.1-2004-01-08-20:08:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
220
diff
changeset
|
107 } |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
108 } |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
109 } |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
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|
110 |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
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|
111 |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
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112 void ngx_process_get_status() |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
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|
113 { |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
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114 int status; |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
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115 char *process; |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
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diff
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116 ngx_pid_t pid; |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
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117 ngx_err_t err; |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
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diff
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118 ngx_uint_t i, one; |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
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119 struct timeval tv; |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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120 one = 0; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
121 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
122 for ( ;; ) { |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
123 pid = waitpid(-1, &status, WNOHANG); |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
124 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
125 if (pid == 0) { |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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126 return; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
127 } |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
128 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
129 if (pid == -1) { |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
130 err = ngx_errno; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
131 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
132 if (err == NGX_EINTR) { |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
133 continue; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
134 } |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
135 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
136 if (err == NGX_ECHILD && one) { |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
137 return; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
138 } |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
139 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
140 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, errno, |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
141 "waitpid() failed"); |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
142 return; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
143 } |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
144 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
145 one = 1; |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
146 process = ""; |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
147 |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
148 for (i = 0; i < ngx_last_process; i++) { |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
149 if (ngx_processes[i].pid == pid) { |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
150 ngx_processes[i].status = status; |
222
99df0edb63ed
nginx-0.0.1-2004-01-09-00:02:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
221
diff
changeset
|
151 ngx_processes[i].exited = 1; |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
152 process = ngx_processes[i].name; |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
153 break; |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
154 } |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
155 } |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
156 |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
157 if (i == ngx_last_process) { |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
158 process = "unknown process"; |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
159 } |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
160 |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
161 if (WTERMSIG(status)) { |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
162 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
163 "%s " PID_T_FMT " exited on signal %d%s", |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
164 process, pid, WTERMSIG(status), |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
165 WCOREDUMP(status) ? " (core dumped)" : ""); |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
166 |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
167 } else { |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
168 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
diff
changeset
|
169 "%s " PID_T_FMT " exited with code %d", |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
170 process, pid, WEXITSTATUS(status)); |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
171 } |
234
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
172 |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
173 if (WEXITSTATUS(status) == 2 && ngx_processes[i].respawn) { |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
174 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
175 "%s " PID_T_FMT |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
176 " exited with fatal code %d and could not respawn", |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
177 process, pid, WEXITSTATUS(status)); |
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
178 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
changeset
|
179 } |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
180 } |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
181 } |