Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_process.c @ 3619:5a30ea317664 stable-0.7
merge r3615:
do not free() stack allocated buffer
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 15 Jun 2010 09:51:58 +0000 |
parents | e1409e56ba7c |
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rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_event.h> |
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10 #include <ngx_channel.h> |
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11 |
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12 |
539 | 13 typedef struct { |
14 int signo; | |
15 char *signame; | |
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16 char *name; |
539 | 17 void (*handler)(int signo); |
18 } ngx_signal_t; | |
19 | |
20 | |
21 | |
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22 static void ngx_execute_proc(ngx_cycle_t *cycle, void *data); |
539 | 23 static void ngx_signal_handler(int signo); |
24 static void ngx_process_get_status(void); | |
218
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25 |
452 | 26 |
27 int ngx_argc; | |
28 char **ngx_argv; | |
29 char **ngx_os_argv; | |
30 | |
31 ngx_int_t ngx_process_slot; | |
32 ngx_socket_t ngx_channel; | |
33 ngx_int_t ngx_last_process; | |
34 ngx_process_t ngx_processes[NGX_MAX_PROCESSES]; | |
191
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35 |
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36 |
539 | 37 ngx_signal_t signals[] = { |
38 { ngx_signal_value(NGX_RECONFIGURE_SIGNAL), | |
39 "SIG" ngx_value(NGX_RECONFIGURE_SIGNAL), | |
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40 "reload", |
539 | 41 ngx_signal_handler }, |
42 | |
43 { ngx_signal_value(NGX_REOPEN_SIGNAL), | |
44 "SIG" ngx_value(NGX_REOPEN_SIGNAL), | |
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45 "reopen", |
539 | 46 ngx_signal_handler }, |
47 | |
48 { ngx_signal_value(NGX_NOACCEPT_SIGNAL), | |
49 "SIG" ngx_value(NGX_NOACCEPT_SIGNAL), | |
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50 "", |
539 | 51 ngx_signal_handler }, |
52 | |
53 { ngx_signal_value(NGX_TERMINATE_SIGNAL), | |
54 "SIG" ngx_value(NGX_TERMINATE_SIGNAL), | |
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55 "stop", |
539 | 56 ngx_signal_handler }, |
57 | |
58 { ngx_signal_value(NGX_SHUTDOWN_SIGNAL), | |
59 "SIG" ngx_value(NGX_SHUTDOWN_SIGNAL), | |
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60 "quit", |
539 | 61 ngx_signal_handler }, |
62 | |
63 { ngx_signal_value(NGX_CHANGEBIN_SIGNAL), | |
64 "SIG" ngx_value(NGX_CHANGEBIN_SIGNAL), | |
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65 "", |
539 | 66 ngx_signal_handler }, |
67 | |
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68 { SIGALRM, "SIGALRM", "", ngx_signal_handler }, |
539 | 69 |
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70 { SIGINT, "SIGINT", "", ngx_signal_handler }, |
539 | 71 |
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72 { SIGIO, "SIGIO", "", ngx_signal_handler }, |
539 | 73 |
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74 { SIGCHLD, "SIGCHLD", "", ngx_signal_handler }, |
539 | 75 |
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76 { SIGPIPE, "SIGPIPE, SIG_IGN", "", SIG_IGN }, |
539 | 77 |
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78 { 0, NULL, "", NULL } |
539 | 79 }; |
80 | |
81 | |
515 | 82 ngx_pid_t |
83 ngx_spawn_process(ngx_cycle_t *cycle, ngx_spawn_proc_pt proc, void *data, | |
84 char *name, ngx_int_t respawn) | |
191
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85 { |
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86 u_long on; |
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87 ngx_pid_t pid; |
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88 ngx_int_t s; |
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89 |
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90 if (respawn >= 0) { |
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91 s = respawn; |
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92 |
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93 } else { |
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94 for (s = 0; s < ngx_last_process; s++) { |
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95 if (ngx_processes[s].pid == -1) { |
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96 break; |
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97 } |
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98 } |
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99 |
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100 if (s == NGX_MAX_PROCESSES) { |
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101 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, |
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102 "no more than %d processes can be spawned", |
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103 NGX_MAX_PROCESSES); |
543 | 104 return NGX_INVALID_PID; |
389
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105 } |
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106 } |
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107 |
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108 |
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109 if (respawn != NGX_PROCESS_DETACHED) { |
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110 |
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111 /* Solaris 9 still has no AF_LOCAL */ |
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112 |
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113 if (socketpair(AF_UNIX, SOCK_STREAM, 0, ngx_processes[s].channel) == -1) |
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114 { |
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115 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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116 "socketpair() failed while spawning \"%s\"", name); |
543 | 117 return NGX_INVALID_PID; |
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118 } |
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119 |
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120 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0, |
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121 "channel %d:%d", |
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122 ngx_processes[s].channel[0], |
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123 ngx_processes[s].channel[1]); |
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124 |
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125 if (ngx_nonblocking(ngx_processes[s].channel[0]) == -1) { |
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126 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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127 ngx_nonblocking_n " failed while spawning \"%s\"", |
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128 name); |
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129 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 130 return NGX_INVALID_PID; |
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131 } |
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132 |
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133 if (ngx_nonblocking(ngx_processes[s].channel[1]) == -1) { |
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134 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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135 ngx_nonblocking_n " failed while spawning \"%s\"", |
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136 name); |
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137 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 138 return NGX_INVALID_PID; |
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139 } |
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140 |
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141 on = 1; |
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142 if (ioctl(ngx_processes[s].channel[0], FIOASYNC, &on) == -1) { |
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143 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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144 "ioctl(FIOASYNC) failed while spawning \"%s\"", name); |
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145 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 146 return NGX_INVALID_PID; |
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147 } |
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148 |
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149 if (fcntl(ngx_processes[s].channel[0], F_SETOWN, ngx_pid) == -1) { |
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150 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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151 "fcntl(F_SETOWN) failed while spawning \"%s\"", name); |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
152 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 153 return NGX_INVALID_PID; |
365
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
154 } |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
155 |
366
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
156 if (fcntl(ngx_processes[s].channel[0], F_SETFD, FD_CLOEXEC) == -1) { |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
157 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
158 "fcntl(FD_CLOEXEC) failed while spawning \"%s\"", |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
159 name); |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
160 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 161 return NGX_INVALID_PID; |
366
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
162 } |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
163 |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
164 if (fcntl(ngx_processes[s].channel[1], F_SETFD, FD_CLOEXEC) == -1) { |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
165 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
166 "fcntl(FD_CLOEXEC) failed while spawning \"%s\"", |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
167 name); |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
168 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 169 return NGX_INVALID_PID; |
366
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
170 } |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
171 |
365
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
172 ngx_channel = ngx_processes[s].channel[1]; |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
173 |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
174 } else { |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
175 ngx_processes[s].channel[0] = -1; |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
176 ngx_processes[s].channel[1] = -1; |
360
239e37d44a34
nginx-0.0.7-2004-06-18-20:22:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
355
diff
changeset
|
177 } |
239e37d44a34
nginx-0.0.7-2004-06-18-20:22:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
355
diff
changeset
|
178 |
239e37d44a34
nginx-0.0.7-2004-06-18-20:22:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
355
diff
changeset
|
179 ngx_process_slot = s; |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
180 |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
181 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
182 pid = fork(); |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
183 |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
184 switch (pid) { |
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
185 |
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
186 case -1: |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
187 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
188 "fork() failed while spawning \"%s\"", name); |
365
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
189 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 190 return NGX_INVALID_PID; |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
191 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
192 case 0: |
249
2a0540287298
nginx-0.0.2-2004-02-03-19:43:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
248
diff
changeset
|
193 ngx_pid = ngx_getpid(); |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
194 proc(cycle, data); |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
195 break; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
196 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
197 default: |
195
8dee38ea9117
nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
191
diff
changeset
|
198 break; |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
199 } |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
200 |
477 | 201 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "start %s %P", name, pid); |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
202 |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
203 ngx_processes[s].pid = pid; |
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
204 ngx_processes[s].exited = 0; |
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
205 |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
206 if (respawn >= 0) { |
225
2e9a8a14a0cf
nginx-0.0.1-2004-01-13-19:43:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
224
diff
changeset
|
207 return pid; |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
208 } |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
209 |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
210 ngx_processes[s].proc = proc; |
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
211 ngx_processes[s].data = data; |
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
212 ngx_processes[s].name = name; |
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
213 ngx_processes[s].exiting = 0; |
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
214 |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
215 switch (respawn) { |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
216 |
3247
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
217 case NGX_PROCESS_NORESPAWN: |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
218 ngx_processes[s].respawn = 0; |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
219 ngx_processes[s].just_spawn = 0; |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
220 ngx_processes[s].detached = 0; |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
221 break; |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
222 |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
223 case NGX_PROCESS_JUST_SPAWN: |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
224 ngx_processes[s].respawn = 0; |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
225 ngx_processes[s].just_spawn = 1; |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
226 ngx_processes[s].detached = 0; |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
227 break; |
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
228 |
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
229 case NGX_PROCESS_RESPAWN: |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
230 ngx_processes[s].respawn = 1; |
3247
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
231 ngx_processes[s].just_spawn = 0; |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
232 ngx_processes[s].detached = 0; |
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
233 break; |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
234 |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
235 case NGX_PROCESS_JUST_RESPAWN: |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
236 ngx_processes[s].respawn = 1; |
3247
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
237 ngx_processes[s].just_spawn = 1; |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
238 ngx_processes[s].detached = 0; |
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
239 break; |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
240 |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
241 case NGX_PROCESS_DETACHED: |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
242 ngx_processes[s].respawn = 0; |
3247
1f3cd08ebb82
merge r3017, r3018, r3019, r3020, r3021, r3022, r3023, r3196:
Igor Sysoev <igor@sysoev.ru>
parents:
3102
diff
changeset
|
243 ngx_processes[s].just_spawn = 0; |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
244 ngx_processes[s].detached = 1; |
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
245 break; |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
246 } |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
247 |
389
537de4dca8ca
nginx-0.0.7-2004-07-13-21:59:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
366
diff
changeset
|
248 if (s == ngx_last_process) { |
537de4dca8ca
nginx-0.0.7-2004-07-13-21:59:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
366
diff
changeset
|
249 ngx_last_process++; |
537de4dca8ca
nginx-0.0.7-2004-07-13-21:59:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
366
diff
changeset
|
250 } |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
251 |
225
2e9a8a14a0cf
nginx-0.0.1-2004-01-13-19:43:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
224
diff
changeset
|
252 return pid; |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
253 } |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
254 |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
255 |
515 | 256 ngx_pid_t |
257 ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx) | |
218
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258 { |
279
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259 return ngx_spawn_process(cycle, ngx_execute_proc, ctx, ctx->name, |
226
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260 NGX_PROCESS_DETACHED); |
191
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261 } |
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262 |
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263 |
515 | 264 static void |
265 ngx_execute_proc(ngx_cycle_t *cycle, void *data) | |
218
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266 { |
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267 ngx_exec_ctx_t *ctx = data; |
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268 |
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269 if (execve(ctx->path, ctx->argv, ctx->envp) == -1) { |
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270 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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271 "execve() failed while executing %s \"%s\"", |
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272 ctx->name, ctx->path); |
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273 } |
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274 |
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275 exit(1); |
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276 } |
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277 |
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278 |
539 | 279 ngx_int_t |
280 ngx_init_signals(ngx_log_t *log) | |
281 { | |
282 ngx_signal_t *sig; | |
283 struct sigaction sa; | |
284 | |
285 for (sig = signals; sig->signo != 0; sig++) { | |
286 ngx_memzero(&sa, sizeof(struct sigaction)); | |
287 sa.sa_handler = sig->handler; | |
288 sigemptyset(&sa.sa_mask); | |
289 if (sigaction(sig->signo, &sa, NULL) == -1) { | |
290 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, | |
291 "sigaction(%s) failed", sig->signame); | |
292 return NGX_ERROR; | |
293 } | |
294 } | |
295 | |
296 return NGX_OK; | |
297 } | |
298 | |
299 | |
515 | 300 void |
539 | 301 ngx_signal_handler(int signo) |
302 { | |
303 char *action; | |
304 ngx_int_t ignore; | |
305 ngx_err_t err; | |
306 ngx_signal_t *sig; | |
307 | |
308 ignore = 0; | |
309 | |
310 err = ngx_errno; | |
311 | |
312 for (sig = signals; sig->signo != 0; sig++) { | |
313 if (sig->signo == signo) { | |
314 break; | |
315 } | |
316 } | |
317 | |
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318 ngx_time_sigsafe_update(); |
539 | 319 |
320 action = ""; | |
321 | |
322 switch (ngx_process) { | |
323 | |
324 case NGX_PROCESS_MASTER: | |
325 case NGX_PROCESS_SINGLE: | |
326 switch (signo) { | |
327 | |
328 case ngx_signal_value(NGX_SHUTDOWN_SIGNAL): | |
329 ngx_quit = 1; | |
330 action = ", shutting down"; | |
331 break; | |
332 | |
333 case ngx_signal_value(NGX_TERMINATE_SIGNAL): | |
334 case SIGINT: | |
335 ngx_terminate = 1; | |
336 action = ", exiting"; | |
337 break; | |
338 | |
339 case ngx_signal_value(NGX_NOACCEPT_SIGNAL): | |
340 ngx_noaccept = 1; | |
341 action = ", stop accepting connections"; | |
342 break; | |
343 | |
344 case ngx_signal_value(NGX_RECONFIGURE_SIGNAL): | |
345 ngx_reconfigure = 1; | |
346 action = ", reconfiguring"; | |
347 break; | |
348 | |
349 case ngx_signal_value(NGX_REOPEN_SIGNAL): | |
350 ngx_reopen = 1; | |
351 action = ", reopening logs"; | |
352 break; | |
353 | |
354 case ngx_signal_value(NGX_CHANGEBIN_SIGNAL): | |
355 if (getppid() > 1 || ngx_new_binary > 0) { | |
356 | |
357 /* | |
358 * Ignore the signal in the new binary if its parent is | |
359 * not the init process, i.e. the old binary's process | |
698 | 360 * is still running. Or ignore the signal in the old binary's |
539 | 361 * process if the new binary's process is already running. |
362 */ | |
363 | |
364 action = ", ignoring"; | |
365 ignore = 1; | |
366 break; | |
367 } | |
368 | |
369 ngx_change_binary = 1; | |
370 action = ", changing binary"; | |
371 break; | |
372 | |
373 case SIGALRM: | |
3102 | 374 ngx_sigalrm = 1; |
539 | 375 break; |
376 | |
377 case SIGIO: | |
378 ngx_sigio = 1; | |
379 break; | |
380 | |
381 case SIGCHLD: | |
382 ngx_reap = 1; | |
383 break; | |
384 } | |
385 | |
386 break; | |
387 | |
388 case NGX_PROCESS_WORKER: | |
389 switch (signo) { | |
390 | |
391 case ngx_signal_value(NGX_NOACCEPT_SIGNAL): | |
392 ngx_debug_quit = 1; | |
393 case ngx_signal_value(NGX_SHUTDOWN_SIGNAL): | |
394 ngx_quit = 1; | |
395 action = ", shutting down"; | |
396 break; | |
397 | |
398 case ngx_signal_value(NGX_TERMINATE_SIGNAL): | |
399 case SIGINT: | |
400 ngx_terminate = 1; | |
401 action = ", exiting"; | |
402 break; | |
403 | |
404 case ngx_signal_value(NGX_REOPEN_SIGNAL): | |
405 ngx_reopen = 1; | |
406 action = ", reopening logs"; | |
407 break; | |
408 | |
409 case ngx_signal_value(NGX_RECONFIGURE_SIGNAL): | |
410 case ngx_signal_value(NGX_CHANGEBIN_SIGNAL): | |
411 case SIGIO: | |
412 action = ", ignoring"; | |
413 break; | |
414 } | |
415 | |
416 break; | |
417 } | |
418 | |
419 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, | |
420 "signal %d (%s) received%s", signo, sig->signame, action); | |
421 | |
422 if (ignore) { | |
423 ngx_log_error(NGX_LOG_CRIT, ngx_cycle->log, 0, | |
424 "the changing binary signal is ignored: " | |
425 "you should shutdown or terminate " | |
426 "before either old or new binary's process"); | |
427 } | |
428 | |
429 if (signo == SIGCHLD) { | |
430 ngx_process_get_status(); | |
431 } | |
432 | |
433 ngx_set_errno(err); | |
434 } | |
435 | |
436 | |
437 static void | |
515 | 438 ngx_process_get_status(void) |
218
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439 { |
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440 int status; |
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441 char *process; |
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442 ngx_pid_t pid; |
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443 ngx_err_t err; |
354
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318
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444 ngx_int_t i; |
eaf1f651cf86
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445 ngx_uint_t one; |
477 | 446 |
191
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447 one = 0; |
71ce40b3c37b
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parents:
diff
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|
448 |
71ce40b3c37b
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449 for ( ;; ) { |
71ce40b3c37b
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450 pid = waitpid(-1, &status, WNOHANG); |
71ce40b3c37b
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parents:
diff
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|
451 |
71ce40b3c37b
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diff
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452 if (pid == 0) { |
71ce40b3c37b
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parents:
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|
453 return; |
71ce40b3c37b
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parents:
diff
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|
454 } |
71ce40b3c37b
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parents:
diff
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|
455 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
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|
456 if (pid == -1) { |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
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|
457 err = ngx_errno; |
71ce40b3c37b
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
458 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
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|
459 if (err == NGX_EINTR) { |
71ce40b3c37b
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parents:
diff
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|
460 continue; |
71ce40b3c37b
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parents:
diff
changeset
|
461 } |
71ce40b3c37b
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parents:
diff
changeset
|
462 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
463 if (err == NGX_ECHILD && one) { |
71ce40b3c37b
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parents:
diff
changeset
|
464 return; |
71ce40b3c37b
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parents:
diff
changeset
|
465 } |
71ce40b3c37b
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parents:
diff
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|
466 |
943
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lower the log level of the waitpid() ENOCHILD error on FreeBSD
Igor Sysoev <igor@sysoev.ru>
parents:
698
diff
changeset
|
467 #if (NGX_SOLARIS || NGX_FREEBSD) |
452 | 468 |
469 /* | |
470 * Solaris always calls the signal handler for each exited process | |
943
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lower the log level of the waitpid() ENOCHILD error on FreeBSD
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698
diff
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|
471 * despite waitpid() may be already called for this process. |
cbe0292e53b3
lower the log level of the waitpid() ENOCHILD error on FreeBSD
Igor Sysoev <igor@sysoev.ru>
parents:
698
diff
changeset
|
472 * |
cbe0292e53b3
lower the log level of the waitpid() ENOCHILD error on FreeBSD
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698
diff
changeset
|
473 * When several processes exit at the same time FreeBSD may |
cbe0292e53b3
lower the log level of the waitpid() ENOCHILD error on FreeBSD
Igor Sysoev <igor@sysoev.ru>
parents:
698
diff
changeset
|
474 * erroneously call the signal handler for exited process |
1963 | 475 * despite waitpid() may be already called for this process. |
452 | 476 */ |
477 | |
478 if (err == NGX_ECHILD) { | |
3587
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3247
diff
changeset
|
479 ngx_log_error(NGX_LOG_INFO, ngx_cycle->log, 0, |
e1409e56ba7c
merge r3473, r3474, r3385, r3386, r3537:
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parents:
3247
diff
changeset
|
480 "waitpid() failed (%d: %s)", |
e1409e56ba7c
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3247
diff
changeset
|
481 err, ngx_sigsafe_strerror(err)); |
563 | 482 return; |
452 | 483 } |
484 | |
485 #endif | |
486 | |
3587
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parents:
3247
diff
changeset
|
487 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
e1409e56ba7c
merge r3473, r3474, r3385, r3386, r3537:
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parents:
3247
diff
changeset
|
488 "waitpid() failed (%d: %s)", |
e1409e56ba7c
merge r3473, r3474, r3385, r3386, r3537:
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parents:
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diff
changeset
|
489 err, ngx_sigsafe_strerror(err)); |
191
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diff
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|
490 return; |
71ce40b3c37b
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parents:
diff
changeset
|
491 } |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
492 |
306
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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279
diff
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|
493 |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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279
diff
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|
494 if (ngx_accept_mutex_ptr) { |
6b91bfbc4123
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diff
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|
495 |
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279
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|
496 /* |
6b91bfbc4123
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279
diff
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|
497 * unlock the accept mutex if the abnormally exited process |
6b91bfbc4123
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279
diff
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|
498 * held it |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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279
diff
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|
499 */ |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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279
diff
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|
500 |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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279
diff
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|
501 ngx_atomic_cmp_set(ngx_accept_mutex_ptr, pid, 0); |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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parents:
279
diff
changeset
|
502 } |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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diff
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|
503 |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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279
diff
changeset
|
504 |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
505 one = 1; |
389
537de4dca8ca
nginx-0.0.7-2004-07-13-21:59:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
366
diff
changeset
|
506 process = "unknown process"; |
191
71ce40b3c37b
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parents:
diff
changeset
|
507 |
218
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195
diff
changeset
|
508 for (i = 0; i < ngx_last_process; i++) { |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
changeset
|
509 if (ngx_processes[i].pid == pid) { |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
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|
510 ngx_processes[i].status = status; |
222
99df0edb63ed
nginx-0.0.1-2004-01-09-00:02:06 import
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parents:
221
diff
changeset
|
511 ngx_processes[i].exited = 1; |
218
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parents:
195
diff
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|
512 process = ngx_processes[i].name; |
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513 break; |
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514 } |
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515 } |
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516 |
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517 if (WTERMSIG(status)) { |
2494 | 518 #ifdef WCOREDUMP |
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519 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
461 | 520 "%s %P exited on signal %d%s", |
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521 process, pid, WTERMSIG(status), |
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522 WCOREDUMP(status) ? " (core dumped)" : ""); |
2494 | 523 #else |
524 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
525 "%s %P exited on signal %d", | |
526 process, pid, WTERMSIG(status)); | |
527 #endif | |
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528 |
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529 } else { |
477 | 530 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, |
461 | 531 "%s %P exited with code %d", |
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532 process, pid, WEXITSTATUS(status)); |
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533 } |
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534 |
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535 if (WEXITSTATUS(status) == 2 && ngx_processes[i].respawn) { |
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536 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
1963 | 537 "%s %P exited with fatal code %d " |
538 "and can not be respawn", | |
539 process, pid, WEXITSTATUS(status)); | |
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540 ngx_processes[i].respawn = 0; |
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541 } |
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542 } |
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543 } |
461 | 544 |
545 | |
515 | 546 void |
547 ngx_debug_point(void) | |
461 | 548 { |
549 ngx_core_conf_t *ccf; | |
550 | |
551 ccf = (ngx_core_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx, | |
552 ngx_core_module); | |
553 | |
554 switch (ccf->debug_points) { | |
555 | |
556 case NGX_DEBUG_POINTS_STOP: | |
557 raise(SIGSTOP); | |
558 break; | |
559 | |
560 case NGX_DEBUG_POINTS_ABORT: | |
563 | 561 ngx_abort(); |
461 | 562 } |
563 } | |
2738
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564 |
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565 |
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566 ngx_int_t |
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567 ngx_os_signal_process(ngx_cycle_t *cycle, char *name, ngx_int_t pid) |
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568 { |
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569 ngx_signal_t *sig; |
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570 |
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571 for (sig = signals; sig->signo != 0; sig++) { |
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572 if (ngx_strcmp(name, sig->name) == 0) { |
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573 if (kill(pid, sig->signo) != -1) { |
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574 return 0; |
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575 } |
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576 |
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577 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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578 "kill(%P, %d) failed", pid, sig->signo); |
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579 } |
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580 } |
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581 |
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582 return 1; |
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583 } |