Mercurial > hg > nginx
annotate src/os/unix/ngx_process.c @ 4687:7f50a4063100
Mp4: fixed non-keyframe seeks in some cases (ticket #175).
Number of entries in stsc atom was wrong if we've added an entry to
split a chunk.
Additionally, there is no need to add an entry if we are going to split
last chunk in an entry, it's enough to update the entry we already have.
Previously new entry was added and old one was left as is, resulting in
incorrect entry with zero chunks which might confuse some software.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 18 Jun 2012 14:01:18 +0000 |
parents | 14411ee4d89f |
children | a50ed82f19e4 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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6 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
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11 #include <ngx_channel.h> |
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12 |
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13 |
539 | 14 typedef struct { |
3681 | 15 int signo; |
16 char *signame; | |
17 char *name; | |
18 void (*handler)(int signo); | |
539 | 19 } ngx_signal_t; |
20 | |
21 | |
22 | |
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23 static void ngx_execute_proc(ngx_cycle_t *cycle, void *data); |
539 | 24 static void ngx_signal_handler(int signo); |
25 static void ngx_process_get_status(void); | |
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26 static void ngx_unlock_mutexes(ngx_pid_t pid); |
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27 |
452 | 28 |
29 int ngx_argc; | |
30 char **ngx_argv; | |
31 char **ngx_os_argv; | |
32 | |
33 ngx_int_t ngx_process_slot; | |
34 ngx_socket_t ngx_channel; | |
35 ngx_int_t ngx_last_process; | |
36 ngx_process_t ngx_processes[NGX_MAX_PROCESSES]; | |
191
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37 |
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38 |
539 | 39 ngx_signal_t signals[] = { |
40 { ngx_signal_value(NGX_RECONFIGURE_SIGNAL), | |
41 "SIG" ngx_value(NGX_RECONFIGURE_SIGNAL), | |
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42 "reload", |
539 | 43 ngx_signal_handler }, |
44 | |
45 { ngx_signal_value(NGX_REOPEN_SIGNAL), | |
46 "SIG" ngx_value(NGX_REOPEN_SIGNAL), | |
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47 "reopen", |
539 | 48 ngx_signal_handler }, |
49 | |
50 { ngx_signal_value(NGX_NOACCEPT_SIGNAL), | |
51 "SIG" ngx_value(NGX_NOACCEPT_SIGNAL), | |
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52 "", |
539 | 53 ngx_signal_handler }, |
54 | |
55 { ngx_signal_value(NGX_TERMINATE_SIGNAL), | |
56 "SIG" ngx_value(NGX_TERMINATE_SIGNAL), | |
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57 "stop", |
539 | 58 ngx_signal_handler }, |
59 | |
60 { ngx_signal_value(NGX_SHUTDOWN_SIGNAL), | |
61 "SIG" ngx_value(NGX_SHUTDOWN_SIGNAL), | |
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62 "quit", |
539 | 63 ngx_signal_handler }, |
64 | |
65 { ngx_signal_value(NGX_CHANGEBIN_SIGNAL), | |
66 "SIG" ngx_value(NGX_CHANGEBIN_SIGNAL), | |
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67 "", |
539 | 68 ngx_signal_handler }, |
69 | |
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70 { SIGALRM, "SIGALRM", "", ngx_signal_handler }, |
539 | 71 |
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72 { SIGINT, "SIGINT", "", ngx_signal_handler }, |
539 | 73 |
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74 { SIGIO, "SIGIO", "", ngx_signal_handler }, |
539 | 75 |
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76 { SIGCHLD, "SIGCHLD", "", ngx_signal_handler }, |
539 | 77 |
3045 | 78 { SIGSYS, "SIGSYS, SIG_IGN", "", SIG_IGN }, |
79 | |
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80 { SIGPIPE, "SIGPIPE, SIG_IGN", "", SIG_IGN }, |
539 | 81 |
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82 { 0, NULL, "", NULL } |
539 | 83 }; |
84 | |
85 | |
515 | 86 ngx_pid_t |
87 ngx_spawn_process(ngx_cycle_t *cycle, ngx_spawn_proc_pt proc, void *data, | |
88 char *name, ngx_int_t respawn) | |
191
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89 { |
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90 u_long on; |
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91 ngx_pid_t pid; |
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92 ngx_int_t s; |
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93 |
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94 if (respawn >= 0) { |
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95 s = respawn; |
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96 |
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97 } else { |
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98 for (s = 0; s < ngx_last_process; s++) { |
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99 if (ngx_processes[s].pid == -1) { |
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100 break; |
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101 } |
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102 } |
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103 |
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104 if (s == NGX_MAX_PROCESSES) { |
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105 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, |
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106 "no more than %d processes can be spawned", |
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107 NGX_MAX_PROCESSES); |
543 | 108 return NGX_INVALID_PID; |
389
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109 } |
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110 } |
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111 |
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112 |
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113 if (respawn != NGX_PROCESS_DETACHED) { |
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114 |
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115 /* Solaris 9 still has no AF_LOCAL */ |
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116 |
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117 if (socketpair(AF_UNIX, SOCK_STREAM, 0, ngx_processes[s].channel) == -1) |
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118 { |
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119 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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120 "socketpair() failed while spawning \"%s\"", name); |
543 | 121 return NGX_INVALID_PID; |
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122 } |
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123 |
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124 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0, |
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125 "channel %d:%d", |
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126 ngx_processes[s].channel[0], |
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127 ngx_processes[s].channel[1]); |
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128 |
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129 if (ngx_nonblocking(ngx_processes[s].channel[0]) == -1) { |
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130 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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131 ngx_nonblocking_n " failed while spawning \"%s\"", |
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132 name); |
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133 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 134 return NGX_INVALID_PID; |
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135 } |
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136 |
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137 if (ngx_nonblocking(ngx_processes[s].channel[1]) == -1) { |
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138 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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139 ngx_nonblocking_n " failed while spawning \"%s\"", |
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140 name); |
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141 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 142 return NGX_INVALID_PID; |
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143 } |
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144 |
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145 on = 1; |
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146 if (ioctl(ngx_processes[s].channel[0], FIOASYNC, &on) == -1) { |
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147 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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148 "ioctl(FIOASYNC) failed while spawning \"%s\"", name); |
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149 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 150 return NGX_INVALID_PID; |
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151 } |
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152 |
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153 if (fcntl(ngx_processes[s].channel[0], F_SETOWN, ngx_pid) == -1) { |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
154 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
155 "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
|
156 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 157 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
|
158 } |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
159 |
366
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
160 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
|
161 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
|
162 "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
|
163 name); |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
164 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 165 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
|
166 } |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
167 |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
168 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
|
169 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
|
170 "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
|
171 name); |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
172 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 173 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
|
174 } |
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
175 |
365
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
176 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
|
177 |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
178 } else { |
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
179 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
|
180 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
|
181 } |
239e37d44a34
nginx-0.0.7-2004-06-18-20:22:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
355
diff
changeset
|
182 |
239e37d44a34
nginx-0.0.7-2004-06-18-20:22:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
355
diff
changeset
|
183 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
|
184 |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
185 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
186 pid = fork(); |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
187 |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
188 switch (pid) { |
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
189 |
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
190 case -1: |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
191 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
|
192 "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
|
193 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
543 | 194 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
|
195 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
196 case 0: |
249
2a0540287298
nginx-0.0.2-2004-02-03-19:43:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
248
diff
changeset
|
197 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
|
198 proc(cycle, data); |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
199 break; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
200 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
201 default: |
195
8dee38ea9117
nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
191
diff
changeset
|
202 break; |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
203 } |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
204 |
477 | 205 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
|
206 |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
207 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
|
208 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
|
209 |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
210 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
|
211 return pid; |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
212 } |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
213 |
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
214 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
|
215 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
|
216 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
|
217 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
|
218 |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
219 switch (respawn) { |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
220 |
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
221 case NGX_PROCESS_NORESPAWN: |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
222 ngx_processes[s].respawn = 0; |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
223 ngx_processes[s].just_spawn = 0; |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
224 ngx_processes[s].detached = 0; |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
225 break; |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
226 |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
227 case NGX_PROCESS_JUST_SPAWN: |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
228 ngx_processes[s].respawn = 0; |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
229 ngx_processes[s].just_spawn = 1; |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
230 ngx_processes[s].detached = 0; |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
231 break; |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
232 |
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
233 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
|
234 ngx_processes[s].respawn = 1; |
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
235 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
|
236 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
|
237 break; |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
238 |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
239 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
|
240 ngx_processes[s].respawn = 1; |
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
241 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
|
242 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
|
243 break; |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
244 |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
245 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
|
246 ngx_processes[s].respawn = 0; |
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
247 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
|
248 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
|
249 break; |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
250 } |
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
251 |
389
537de4dca8ca
nginx-0.0.7-2004-07-13-21:59:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
366
diff
changeset
|
252 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
|
253 ngx_last_process++; |
537de4dca8ca
nginx-0.0.7-2004-07-13-21:59:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
366
diff
changeset
|
254 } |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
255 |
225
2e9a8a14a0cf
nginx-0.0.1-2004-01-13-19:43:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
224
diff
changeset
|
256 return pid; |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
257 } |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
258 |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
259 |
515 | 260 ngx_pid_t |
261 ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx) | |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
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262 { |
279
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263 return ngx_spawn_process(cycle, ngx_execute_proc, ctx, ctx->name, |
226
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264 NGX_PROCESS_DETACHED); |
191
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265 } |
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266 |
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267 |
515 | 268 static void |
269 ngx_execute_proc(ngx_cycle_t *cycle, void *data) | |
218
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270 { |
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271 ngx_exec_ctx_t *ctx = data; |
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272 |
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273 if (execve(ctx->path, ctx->argv, ctx->envp) == -1) { |
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274 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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275 "execve() failed while executing %s \"%s\"", |
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276 ctx->name, ctx->path); |
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277 } |
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278 |
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279 exit(1); |
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280 } |
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281 |
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282 |
539 | 283 ngx_int_t |
284 ngx_init_signals(ngx_log_t *log) | |
285 { | |
286 ngx_signal_t *sig; | |
287 struct sigaction sa; | |
288 | |
289 for (sig = signals; sig->signo != 0; sig++) { | |
290 ngx_memzero(&sa, sizeof(struct sigaction)); | |
291 sa.sa_handler = sig->handler; | |
292 sigemptyset(&sa.sa_mask); | |
293 if (sigaction(sig->signo, &sa, NULL) == -1) { | |
294 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, | |
295 "sigaction(%s) failed", sig->signame); | |
296 return NGX_ERROR; | |
297 } | |
298 } | |
299 | |
300 return NGX_OK; | |
301 } | |
302 | |
303 | |
515 | 304 void |
539 | 305 ngx_signal_handler(int signo) |
306 { | |
307 char *action; | |
308 ngx_int_t ignore; | |
309 ngx_err_t err; | |
310 ngx_signal_t *sig; | |
311 | |
312 ignore = 0; | |
313 | |
314 err = ngx_errno; | |
315 | |
316 for (sig = signals; sig->signo != 0; sig++) { | |
317 if (sig->signo == signo) { | |
318 break; | |
319 } | |
320 } | |
321 | |
3475
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322 ngx_time_sigsafe_update(); |
539 | 323 |
324 action = ""; | |
325 | |
326 switch (ngx_process) { | |
327 | |
328 case NGX_PROCESS_MASTER: | |
329 case NGX_PROCESS_SINGLE: | |
330 switch (signo) { | |
331 | |
332 case ngx_signal_value(NGX_SHUTDOWN_SIGNAL): | |
333 ngx_quit = 1; | |
334 action = ", shutting down"; | |
335 break; | |
336 | |
337 case ngx_signal_value(NGX_TERMINATE_SIGNAL): | |
338 case SIGINT: | |
339 ngx_terminate = 1; | |
340 action = ", exiting"; | |
341 break; | |
342 | |
343 case ngx_signal_value(NGX_NOACCEPT_SIGNAL): | |
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344 if (ngx_daemonized) { |
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345 ngx_noaccept = 1; |
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346 action = ", stop accepting connections"; |
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347 } |
539 | 348 break; |
349 | |
350 case ngx_signal_value(NGX_RECONFIGURE_SIGNAL): | |
351 ngx_reconfigure = 1; | |
352 action = ", reconfiguring"; | |
353 break; | |
354 | |
355 case ngx_signal_value(NGX_REOPEN_SIGNAL): | |
356 ngx_reopen = 1; | |
357 action = ", reopening logs"; | |
358 break; | |
359 | |
360 case ngx_signal_value(NGX_CHANGEBIN_SIGNAL): | |
361 if (getppid() > 1 || ngx_new_binary > 0) { | |
362 | |
363 /* | |
364 * Ignore the signal in the new binary if its parent is | |
365 * not the init process, i.e. the old binary's process | |
698 | 366 * is still running. Or ignore the signal in the old binary's |
539 | 367 * process if the new binary's process is already running. |
368 */ | |
369 | |
370 action = ", ignoring"; | |
371 ignore = 1; | |
372 break; | |
373 } | |
374 | |
375 ngx_change_binary = 1; | |
376 action = ", changing binary"; | |
377 break; | |
378 | |
379 case SIGALRM: | |
3048
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380 ngx_sigalrm = 1; |
539 | 381 break; |
382 | |
383 case SIGIO: | |
384 ngx_sigio = 1; | |
385 break; | |
386 | |
387 case SIGCHLD: | |
388 ngx_reap = 1; | |
389 break; | |
390 } | |
391 | |
392 break; | |
393 | |
394 case NGX_PROCESS_WORKER: | |
3358
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395 case NGX_PROCESS_HELPER: |
539 | 396 switch (signo) { |
397 | |
398 case ngx_signal_value(NGX_NOACCEPT_SIGNAL): | |
4019
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399 if (!ngx_daemonized) { |
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400 break; |
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401 } |
539 | 402 ngx_debug_quit = 1; |
403 case ngx_signal_value(NGX_SHUTDOWN_SIGNAL): | |
404 ngx_quit = 1; | |
405 action = ", shutting down"; | |
406 break; | |
407 | |
408 case ngx_signal_value(NGX_TERMINATE_SIGNAL): | |
409 case SIGINT: | |
410 ngx_terminate = 1; | |
411 action = ", exiting"; | |
412 break; | |
413 | |
414 case ngx_signal_value(NGX_REOPEN_SIGNAL): | |
415 ngx_reopen = 1; | |
416 action = ", reopening logs"; | |
417 break; | |
418 | |
419 case ngx_signal_value(NGX_RECONFIGURE_SIGNAL): | |
420 case ngx_signal_value(NGX_CHANGEBIN_SIGNAL): | |
421 case SIGIO: | |
422 action = ", ignoring"; | |
423 break; | |
424 } | |
425 | |
426 break; | |
427 } | |
428 | |
429 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, | |
430 "signal %d (%s) received%s", signo, sig->signame, action); | |
431 | |
432 if (ignore) { | |
433 ngx_log_error(NGX_LOG_CRIT, ngx_cycle->log, 0, | |
434 "the changing binary signal is ignored: " | |
435 "you should shutdown or terminate " | |
436 "before either old or new binary's process"); | |
437 } | |
438 | |
439 if (signo == SIGCHLD) { | |
440 ngx_process_get_status(); | |
441 } | |
442 | |
443 ngx_set_errno(err); | |
444 } | |
445 | |
446 | |
447 static void | |
515 | 448 ngx_process_get_status(void) |
218
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449 { |
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450 int status; |
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451 char *process; |
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452 ngx_pid_t pid; |
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453 ngx_err_t err; |
354
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318
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454 ngx_int_t i; |
eaf1f651cf86
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455 ngx_uint_t one; |
477 | 456 |
191
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457 one = 0; |
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458 |
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459 for ( ;; ) { |
71ce40b3c37b
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460 pid = waitpid(-1, &status, WNOHANG); |
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diff
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461 |
71ce40b3c37b
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462 if (pid == 0) { |
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463 return; |
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464 } |
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465 |
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|
466 if (pid == -1) { |
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467 err = ngx_errno; |
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|
468 |
71ce40b3c37b
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diff
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|
469 if (err == NGX_EINTR) { |
71ce40b3c37b
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470 continue; |
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|
471 } |
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diff
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|
472 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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diff
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|
473 if (err == NGX_ECHILD && one) { |
71ce40b3c37b
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|
474 return; |
71ce40b3c37b
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|
475 } |
71ce40b3c37b
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|
476 |
943
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lower the log level of the waitpid() ENOCHILD error on FreeBSD
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698
diff
changeset
|
477 #if (NGX_SOLARIS || NGX_FREEBSD) |
452 | 478 |
479 /* | |
480 * Solaris always calls the signal handler for each exited process | |
943
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698
diff
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481 * despite waitpid() may be already called for this process. |
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diff
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|
482 * |
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698
diff
changeset
|
483 * When several processes exit at the same time FreeBSD may |
cbe0292e53b3
lower the log level of the waitpid() ENOCHILD error on FreeBSD
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parents:
698
diff
changeset
|
484 * erroneously call the signal handler for exited process |
1963 | 485 * despite waitpid() may be already called for this process. |
452 | 486 */ |
487 | |
488 if (err == NGX_ECHILD) { | |
3787
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489 ngx_log_error(NGX_LOG_INFO, ngx_cycle->log, err, |
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490 "waitpid() failed"); |
563 | 491 return; |
452 | 492 } |
493 | |
494 #endif | |
495 | |
3787
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496 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, err, |
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|
497 "waitpid() failed"); |
191
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498 return; |
71ce40b3c37b
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|
499 } |
71ce40b3c37b
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|
500 |
306
6b91bfbc4123
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279
diff
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|
501 |
191
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|
502 one = 1; |
389
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nginx-0.0.7-2004-07-13-21:59:12 import
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366
diff
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|
503 process = "unknown process"; |
191
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|
504 |
218
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505 for (i = 0; i < ngx_last_process; i++) { |
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506 if (ngx_processes[i].pid == pid) { |
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507 ngx_processes[i].status = status; |
222
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221
diff
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|
508 ngx_processes[i].exited = 1; |
218
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509 process = ngx_processes[i].name; |
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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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|
510 break; |
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195
diff
changeset
|
511 } |
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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195
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|
512 } |
05592fd7a436
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195
diff
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|
513 |
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nginx-0.0.1-2004-01-05-23:55:48 import
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195
diff
changeset
|
514 if (WTERMSIG(status)) { |
2494 | 515 #ifdef WCOREDUMP |
218
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195
diff
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516 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
461 | 517 "%s %P exited on signal %d%s", |
218
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518 process, pid, WTERMSIG(status), |
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519 WCOREDUMP(status) ? " (core dumped)" : ""); |
2494 | 520 #else |
521 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
522 "%s %P exited on signal %d", | |
523 process, pid, WTERMSIG(status)); | |
524 #endif | |
218
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525 |
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526 } else { |
477 | 527 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, |
461 | 528 "%s %P exited with code %d", |
218
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529 process, pid, WEXITSTATUS(status)); |
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530 } |
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531 |
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532 if (WEXITSTATUS(status) == 2 && ngx_processes[i].respawn) { |
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533 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
1963 | 534 "%s %P exited with fatal code %d " |
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535 "and cannot be respawned", |
1963 | 536 process, pid, WEXITSTATUS(status)); |
234
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537 ngx_processes[i].respawn = 0; |
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538 } |
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539 |
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540 ngx_unlock_mutexes(pid); |
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541 } |
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542 } |
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543 |
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544 |
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545 static void |
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546 ngx_unlock_mutexes(ngx_pid_t pid) |
4522 | 547 { |
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548 ngx_uint_t i; |
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549 ngx_shm_zone_t *shm_zone; |
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550 ngx_list_part_t *part; |
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551 ngx_slab_pool_t *sp; |
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552 |
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553 /* |
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554 * unlock the accept mutex if the abnormally exited process |
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555 * held it |
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556 */ |
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557 |
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558 if (ngx_accept_mutex_ptr) { |
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559 (void) ngx_shmtx_force_unlock(&ngx_accept_mutex, pid); |
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560 } |
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561 |
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562 /* |
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563 * unlock shared memory mutexes if held by the abnormally exited |
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564 * process |
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565 */ |
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566 |
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567 part = (ngx_list_part_t *) &ngx_cycle->shared_memory.part; |
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568 shm_zone = part->elts; |
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569 |
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570 for (i = 0; /* void */ ; i++) { |
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571 |
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572 if (i >= part->nelts) { |
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573 if (part->next == NULL) { |
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574 break; |
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575 } |
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576 part = part->next; |
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577 shm_zone = part->elts; |
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578 i = 0; |
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579 } |
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580 |
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581 sp = (ngx_slab_pool_t *) shm_zone[i].shm.addr; |
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582 |
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583 if (ngx_shmtx_force_unlock(&sp->mutex, pid)) { |
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584 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
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585 "shared memory zone \"%V\" was locked by %P", |
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586 &shm_zone[i].shm.name, pid); |
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587 } |
191
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588 } |
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589 } |
461 | 590 |
591 | |
515 | 592 void |
593 ngx_debug_point(void) | |
461 | 594 { |
595 ngx_core_conf_t *ccf; | |
596 | |
597 ccf = (ngx_core_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx, | |
598 ngx_core_module); | |
599 | |
600 switch (ccf->debug_points) { | |
601 | |
602 case NGX_DEBUG_POINTS_STOP: | |
603 raise(SIGSTOP); | |
604 break; | |
605 | |
606 case NGX_DEBUG_POINTS_ABORT: | |
563 | 607 ngx_abort(); |
461 | 608 } |
609 } | |
2738
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610 |
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611 |
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612 ngx_int_t |
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613 ngx_os_signal_process(ngx_cycle_t *cycle, char *name, ngx_int_t pid) |
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614 { |
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615 ngx_signal_t *sig; |
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616 |
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617 for (sig = signals; sig->signo != 0; sig++) { |
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618 if (ngx_strcmp(name, sig->name) == 0) { |
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619 if (kill(pid, sig->signo) != -1) { |
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620 return 0; |
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621 } |
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622 |
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623 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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624 "kill(%P, %d) failed", pid, sig->signo); |
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625 } |
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626 } |
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627 |
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628 return 1; |
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629 } |