Mercurial > hg > nginx

annotate src/os/unix/ngx_process.c @ 279:b79f021a644a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.2-2004-03-04-19:34:23 import
author Igor Sysoev <igor@sysoev.ru>
date Thu, 04 Mar 2004 16:34:23 +0000
parents d4e65d74db9f
children 6b91bfbc4123
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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1
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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2 #include <ngx_config.h>
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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3 #include <ngx_core.h>
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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4
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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5
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b79f021a644a nginx-0.0.2-2004-03-04-19:34:23 import
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6 static void ngx_execute_proc(ngx_cycle_t *cycle, void *data);
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7
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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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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71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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10
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11
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2e9a8a14a0cf nginx-0.0.1-2004-01-13-19:43:23 import
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12 ngx_pid_t ngx_spawn_process(ngx_cycle_t *cycle,
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05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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13 ngx_spawn_proc_pt proc, void *data,
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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14 char *name, ngx_int_t respawn)
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71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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15 {
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05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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16 ngx_pid_t pid;
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71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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17
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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18 pid = fork();
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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19
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05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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20 if (pid == -1) {
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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21 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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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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71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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25 switch (pid) {
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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26 case -1:
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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27 return NGX_ERROR;
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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28
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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29 case 0:
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2a0540287298 nginx-0.0.2-2004-02-03-19:43:54 import
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30 ngx_pid = ngx_getpid();
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05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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31 proc(cycle, data);
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71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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32 break;
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33
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34 default:
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8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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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,
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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39 "spawn %s: " PID_T_FMT, name, pid);
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40
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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41 if (respawn >= 0) {
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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42 ngx_processes[respawn].pid = pid;
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43 ngx_processes[respawn].exited = 0;
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2e9a8a14a0cf nginx-0.0.1-2004-01-13-19:43:23 import
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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;
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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51 ngx_processes[ngx_last_process].respawn =
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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52 (respawn == NGX_PROCESS_RESPAWN) ? 1 : 0;
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53 ngx_processes[ngx_last_process].detached =
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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54 (respawn == NGX_PROCESS_DETACHED) ? 1 : 0;
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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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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b79f021a644a nginx-0.0.2-2004-03-04-19:34:23 import
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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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b79f021a644a nginx-0.0.2-2004-03-04-19:34:23 import
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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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b79f021a644a nginx-0.0.2-2004-03-04-19:34:23 import
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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
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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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
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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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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99df0edb63ed nginx-0.0.1-2004-01-09-00:02:06 import
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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,
401154e21826 nginx-0.0.1-2004-01-08-20:08:10 import
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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)
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104 {
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105 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
401154e21826 nginx-0.0.1-2004-01-08-20:08:10 import
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106 "can not respawn %s", ngx_processes[i].name);
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107 }
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108 }
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109 }
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110
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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111
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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112 void ngx_process_get_status()
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113 {
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114 int status;
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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115 char *process;
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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116 ngx_pid_t pid;
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
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117 ngx_err_t err;
05592fd7a436 nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
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 changeset
119 struct timeval tv;
191
71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
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 changeset
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 }