Mercurial > hg > nginx
annotate src/os/unix/ngx_process.c @ 3475:ab353d7dc182
*) introduce ngx_time_sigsafe_update() to update the error log time only
*) change ngx_time_update() interface
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Thu, 25 Mar 2010 09:10:10 +0000 |
| parents | d4c4cfdffe30 |
| children | 81677b7cdb2a |
| 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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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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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); | |
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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]; | |
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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 |
| 3045 | 76 { SIGSYS, "SIGSYS, SIG_IGN", "", SIG_IGN }, |
| 77 | |
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78 { SIGPIPE, "SIGPIPE, SIG_IGN", "", SIG_IGN }, |
| 539 | 79 |
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80 { 0, NULL, "", NULL } |
| 539 | 81 }; |
| 82 | |
| 83 | |
| 515 | 84 ngx_pid_t |
| 85 ngx_spawn_process(ngx_cycle_t *cycle, ngx_spawn_proc_pt proc, void *data, | |
| 86 char *name, ngx_int_t respawn) | |
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87 { |
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88 u_long on; |
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89 ngx_pid_t pid; |
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90 ngx_int_t s; |
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91 |
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92 if (respawn >= 0) { |
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93 s = respawn; |
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94 |
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95 } else { |
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96 for (s = 0; s < ngx_last_process; s++) { |
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97 if (ngx_processes[s].pid == -1) { |
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98 break; |
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99 } |
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100 } |
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101 |
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102 if (s == NGX_MAX_PROCESSES) { |
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103 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, |
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104 "no more than %d processes can be spawned", |
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105 NGX_MAX_PROCESSES); |
| 543 | 106 return NGX_INVALID_PID; |
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107 } |
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108 } |
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109 |
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110 |
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111 if (respawn != NGX_PROCESS_DETACHED) { |
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112 |
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113 /* Solaris 9 still has no AF_LOCAL */ |
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114 |
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115 if (socketpair(AF_UNIX, SOCK_STREAM, 0, ngx_processes[s].channel) == -1) |
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116 { |
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117 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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118 "socketpair() failed while spawning \"%s\"", name); |
| 543 | 119 return NGX_INVALID_PID; |
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120 } |
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121 |
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122 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0, |
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123 "channel %d:%d", |
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124 ngx_processes[s].channel[0], |
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125 ngx_processes[s].channel[1]); |
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126 |
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127 if (ngx_nonblocking(ngx_processes[s].channel[0]) == -1) { |
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128 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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129 ngx_nonblocking_n " failed while spawning \"%s\"", |
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130 name); |
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131 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 132 return NGX_INVALID_PID; |
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133 } |
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134 |
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135 if (ngx_nonblocking(ngx_processes[s].channel[1]) == -1) { |
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136 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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137 ngx_nonblocking_n " failed while spawning \"%s\"", |
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138 name); |
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139 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 140 return NGX_INVALID_PID; |
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141 } |
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142 |
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143 on = 1; |
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144 if (ioctl(ngx_processes[s].channel[0], FIOASYNC, &on) == -1) { |
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145 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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146 "ioctl(FIOASYNC) failed while spawning \"%s\"", name); |
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147 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 148 return NGX_INVALID_PID; |
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360
diff
changeset
|
149 } |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
150 |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
151 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
|
152 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
|
153 "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
|
154 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 155 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
|
156 } |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
157 |
|
366
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
158 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
|
159 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
|
160 "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
|
161 name); |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
162 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 163 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
|
164 } |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
165 |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
166 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
|
167 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
|
168 "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
|
169 name); |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
170 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 171 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
|
172 } |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
173 |
|
365
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
174 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
|
175 |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
176 } else { |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
177 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
|
178 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
|
179 } |
|
239e37d44a34
nginx-0.0.7-2004-06-18-20:22:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
355
diff
changeset
|
180 |
|
239e37d44a34
nginx-0.0.7-2004-06-18-20:22:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
355
diff
changeset
|
181 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
|
182 |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
183 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
184 pid = fork(); |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
185 |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
186 switch (pid) { |
|
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
187 |
|
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
188 case -1: |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
189 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
|
190 "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
|
191 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 192 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
|
193 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
194 case 0: |
|
249
2a0540287298
nginx-0.0.2-2004-02-03-19:43:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
248
diff
changeset
|
195 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
|
196 proc(cycle, data); |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
197 break; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
198 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
199 default: |
|
195
8dee38ea9117
nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
191
diff
changeset
|
200 break; |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
201 } |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
202 |
| 477 | 203 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
|
204 |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
205 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
|
206 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
|
207 |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
208 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
|
209 return pid; |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
210 } |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
211 |
|
354
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].proc = proc; |
|
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].data = data; |
|
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].name = name; |
|
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].exiting = 0; |
|
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
216 |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
217 switch (respawn) { |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
218 |
|
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
219 case NGX_PROCESS_NORESPAWN: |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
220 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
|
221 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
|
222 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
|
223 break; |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
224 |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
225 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
|
226 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
|
227 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
|
228 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
|
229 break; |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
230 |
|
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
231 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
|
232 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
|
233 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
|
234 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
|
235 break; |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
236 |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
237 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
|
238 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
|
239 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
|
240 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
|
241 break; |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
242 |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
243 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
|
244 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
|
245 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
|
246 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
|
247 break; |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
248 } |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
249 |
|
389
537de4dca8ca
nginx-0.0.7-2004-07-13-21:59:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
366
diff
changeset
|
250 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
|
251 ngx_last_process++; |
|
537de4dca8ca
nginx-0.0.7-2004-07-13-21:59:12 import
Igor Sysoev <igor@sysoev.ru>
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252 } |
|
191
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253 |
|
225
2e9a8a14a0cf
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224
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254 return pid; |
|
218
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255 } |
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256 |
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257 |
| 515 | 258 ngx_pid_t |
| 259 ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx) | |
|
218
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260 { |
|
279
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261 return ngx_spawn_process(cycle, ngx_execute_proc, ctx, ctx->name, |
|
226
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262 NGX_PROCESS_DETACHED); |
|
191
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263 } |
|
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264 |
|
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265 |
| 515 | 266 static void |
| 267 ngx_execute_proc(ngx_cycle_t *cycle, void *data) | |
|
218
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268 { |
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269 ngx_exec_ctx_t *ctx = data; |
|
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270 |
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271 if (execve(ctx->path, ctx->argv, ctx->envp) == -1) { |
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272 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
|
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273 "execve() failed while executing %s \"%s\"", |
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274 ctx->name, ctx->path); |
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275 } |
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276 |
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277 exit(1); |
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278 } |
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279 |
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280 |
| 539 | 281 ngx_int_t |
| 282 ngx_init_signals(ngx_log_t *log) | |
| 283 { | |
| 284 ngx_signal_t *sig; | |
| 285 struct sigaction sa; | |
| 286 | |
| 287 for (sig = signals; sig->signo != 0; sig++) { | |
| 288 ngx_memzero(&sa, sizeof(struct sigaction)); | |
| 289 sa.sa_handler = sig->handler; | |
| 290 sigemptyset(&sa.sa_mask); | |
| 291 if (sigaction(sig->signo, &sa, NULL) == -1) { | |
| 292 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, | |
| 293 "sigaction(%s) failed", sig->signame); | |
| 294 return NGX_ERROR; | |
| 295 } | |
| 296 } | |
| 297 | |
| 298 return NGX_OK; | |
| 299 } | |
| 300 | |
| 301 | |
| 515 | 302 void |
| 539 | 303 ngx_signal_handler(int signo) |
| 304 { | |
| 305 char *action; | |
| 306 ngx_int_t ignore; | |
| 307 ngx_err_t err; | |
| 308 ngx_signal_t *sig; | |
| 309 | |
| 310 ignore = 0; | |
| 311 | |
| 312 err = ngx_errno; | |
| 313 | |
| 314 for (sig = signals; sig->signo != 0; sig++) { | |
| 315 if (sig->signo == signo) { | |
| 316 break; | |
| 317 } | |
| 318 } | |
| 319 | |
|
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320 ngx_time_sigsafe_update(); |
| 539 | 321 |
| 322 action = ""; | |
| 323 | |
| 324 switch (ngx_process) { | |
| 325 | |
| 326 case NGX_PROCESS_MASTER: | |
| 327 case NGX_PROCESS_SINGLE: | |
| 328 switch (signo) { | |
| 329 | |
| 330 case ngx_signal_value(NGX_SHUTDOWN_SIGNAL): | |
| 331 ngx_quit = 1; | |
| 332 action = ", shutting down"; | |
| 333 break; | |
| 334 | |
| 335 case ngx_signal_value(NGX_TERMINATE_SIGNAL): | |
| 336 case SIGINT: | |
| 337 ngx_terminate = 1; | |
| 338 action = ", exiting"; | |
| 339 break; | |
| 340 | |
| 341 case ngx_signal_value(NGX_NOACCEPT_SIGNAL): | |
| 342 ngx_noaccept = 1; | |
| 343 action = ", stop accepting connections"; | |
| 344 break; | |
| 345 | |
| 346 case ngx_signal_value(NGX_RECONFIGURE_SIGNAL): | |
| 347 ngx_reconfigure = 1; | |
| 348 action = ", reconfiguring"; | |
| 349 break; | |
| 350 | |
| 351 case ngx_signal_value(NGX_REOPEN_SIGNAL): | |
| 352 ngx_reopen = 1; | |
| 353 action = ", reopening logs"; | |
| 354 break; | |
| 355 | |
| 356 case ngx_signal_value(NGX_CHANGEBIN_SIGNAL): | |
| 357 if (getppid() > 1 || ngx_new_binary > 0) { | |
| 358 | |
| 359 /* | |
| 360 * Ignore the signal in the new binary if its parent is | |
| 361 * not the init process, i.e. the old binary's process | |
| 698 | 362 * is still running. Or ignore the signal in the old binary's |
| 539 | 363 * process if the new binary's process is already running. |
| 364 */ | |
| 365 | |
| 366 action = ", ignoring"; | |
| 367 ignore = 1; | |
| 368 break; | |
| 369 } | |
| 370 | |
| 371 ngx_change_binary = 1; | |
| 372 action = ", changing binary"; | |
| 373 break; | |
| 374 | |
| 375 case SIGALRM: | |
|
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376 ngx_sigalrm = 1; |
| 539 | 377 break; |
| 378 | |
| 379 case SIGIO: | |
| 380 ngx_sigio = 1; | |
| 381 break; | |
| 382 | |
| 383 case SIGCHLD: | |
| 384 ngx_reap = 1; | |
| 385 break; | |
| 386 } | |
| 387 | |
| 388 break; | |
| 389 | |
| 390 case NGX_PROCESS_WORKER: | |
|
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391 case NGX_PROCESS_HELPER: |
| 539 | 392 switch (signo) { |
| 393 | |
| 394 case ngx_signal_value(NGX_NOACCEPT_SIGNAL): | |
| 395 ngx_debug_quit = 1; | |
| 396 case ngx_signal_value(NGX_SHUTDOWN_SIGNAL): | |
| 397 ngx_quit = 1; | |
| 398 action = ", shutting down"; | |
| 399 break; | |
| 400 | |
| 401 case ngx_signal_value(NGX_TERMINATE_SIGNAL): | |
| 402 case SIGINT: | |
| 403 ngx_terminate = 1; | |
| 404 action = ", exiting"; | |
| 405 break; | |
| 406 | |
| 407 case ngx_signal_value(NGX_REOPEN_SIGNAL): | |
| 408 ngx_reopen = 1; | |
| 409 action = ", reopening logs"; | |
| 410 break; | |
| 411 | |
| 412 case ngx_signal_value(NGX_RECONFIGURE_SIGNAL): | |
| 413 case ngx_signal_value(NGX_CHANGEBIN_SIGNAL): | |
| 414 case SIGIO: | |
| 415 action = ", ignoring"; | |
| 416 break; | |
| 417 } | |
| 418 | |
| 419 break; | |
| 420 } | |
| 421 | |
| 422 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, | |
| 423 "signal %d (%s) received%s", signo, sig->signame, action); | |
| 424 | |
| 425 if (ignore) { | |
| 426 ngx_log_error(NGX_LOG_CRIT, ngx_cycle->log, 0, | |
| 427 "the changing binary signal is ignored: " | |
| 428 "you should shutdown or terminate " | |
| 429 "before either old or new binary's process"); | |
| 430 } | |
| 431 | |
| 432 if (signo == SIGCHLD) { | |
| 433 ngx_process_get_status(); | |
| 434 } | |
| 435 | |
| 436 ngx_set_errno(err); | |
| 437 } | |
| 438 | |
| 439 | |
| 440 static void | |
| 515 | 441 ngx_process_get_status(void) |
|
218
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442 { |
|
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443 int status; |
|
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444 char *process; |
|
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445 ngx_pid_t pid; |
|
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446 ngx_err_t err; |
|
354
eaf1f651cf86
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318
diff
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|
447 ngx_int_t i; |
|
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|
448 ngx_uint_t one; |
| 477 | 449 |
|
191
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diff
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|
450 one = 0; |
|
71ce40b3c37b
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parents:
diff
changeset
|
451 |
|
71ce40b3c37b
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parents:
diff
changeset
|
452 for ( ;; ) { |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
453 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
|
454 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
455 if (pid == 0) { |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
456 return; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
457 } |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
458 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
459 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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|
460 err = ngx_errno; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
461 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
462 if (err == NGX_EINTR) { |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
463 continue; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
464 } |
|
71ce40b3c37b
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parents:
diff
changeset
|
465 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
diff
changeset
|
466 if (err == NGX_ECHILD && one) { |
|
71ce40b3c37b
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parents:
diff
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|
467 return; |
|
71ce40b3c37b
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parents:
diff
changeset
|
468 } |
|
71ce40b3c37b
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parents:
diff
changeset
|
469 |
|
943
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lower the log level of the waitpid() ENOCHILD error on FreeBSD
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698
diff
changeset
|
470 #if (NGX_SOLARIS || NGX_FREEBSD) |
| 452 | 471 |
| 472 /* | |
| 473 * Solaris always calls the signal handler for each exited process | |
|
943
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698
diff
changeset
|
474 * despite waitpid() may be already called for this process. |
|
cbe0292e53b3
lower the log level of the waitpid() ENOCHILD error on FreeBSD
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parents:
698
diff
changeset
|
475 * |
|
cbe0292e53b3
lower the log level of the waitpid() ENOCHILD error on FreeBSD
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parents:
698
diff
changeset
|
476 * 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
|
477 * erroneously call the signal handler for exited process |
| 1963 | 478 * despite waitpid() may be already called for this process. |
| 452 | 479 */ |
| 480 | |
| 481 if (err == NGX_ECHILD) { | |
|
3472
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use sys_errlist[] in signal handler instead
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3358
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|
482 ngx_log_error(NGX_LOG_INFO, ngx_cycle->log, 0, |
|
65481698535c
use sys_errlist[] in signal handler instead
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3358
diff
changeset
|
483 "waitpid() failed (%d: %s)", |
|
65481698535c
use sys_errlist[] in signal handler instead
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3358
diff
changeset
|
484 err, ngx_sigsafe_strerror(err)); |
| 563 | 485 return; |
| 452 | 486 } |
| 487 | |
| 488 #endif | |
| 489 | |
|
3472
65481698535c
use sys_errlist[] in signal handler instead
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diff
changeset
|
490 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
|
65481698535c
use sys_errlist[] in signal handler instead
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diff
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|
491 "waitpid() failed (%d: %s)", |
|
65481698535c
use sys_errlist[] in signal handler instead
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|
492 err, ngx_sigsafe_strerror(err)); |
|
191
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|
493 return; |
|
71ce40b3c37b
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|
494 } |
|
71ce40b3c37b
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parents:
diff
changeset
|
495 |
|
306
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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279
diff
changeset
|
496 |
|
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nginx-0.0.3-2004-04-05-00:32:09 import
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279
diff
changeset
|
497 if (ngx_accept_mutex_ptr) { |
|
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diff
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|
498 |
|
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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diff
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|
499 /* |
|
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diff
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|
500 * unlock the accept mutex if the abnormally exited process |
|
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|
501 * held it |
|
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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279
diff
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|
502 */ |
|
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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parents:
279
diff
changeset
|
503 |
|
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
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279
diff
changeset
|
504 ngx_atomic_cmp_set(ngx_accept_mutex_ptr, pid, 0); |
|
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505 } |
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506 |
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507 |
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508 one = 1; |
|
389
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509 process = "unknown process"; |
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191
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510 |
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511 for (i = 0; i < ngx_last_process; i++) { |
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512 if (ngx_processes[i].pid == pid) { |
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513 ngx_processes[i].status = status; |
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514 ngx_processes[i].exited = 1; |
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515 process = ngx_processes[i].name; |
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516 break; |
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517 } |
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518 } |
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519 |
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520 if (WTERMSIG(status)) { |
| 2494 | 521 #ifdef WCOREDUMP |
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522 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
| 461 | 523 "%s %P exited on signal %d%s", |
|
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524 process, pid, WTERMSIG(status), |
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525 WCOREDUMP(status) ? " (core dumped)" : ""); |
| 2494 | 526 #else |
| 527 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
| 528 "%s %P exited on signal %d", | |
| 529 process, pid, WTERMSIG(status)); | |
| 530 #endif | |
|
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531 |
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532 } else { |
| 477 | 533 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, |
| 461 | 534 "%s %P exited with code %d", |
|
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535 process, pid, WEXITSTATUS(status)); |
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536 } |
|
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537 |
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538 if (WEXITSTATUS(status) == 2 && ngx_processes[i].respawn) { |
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539 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
| 1963 | 540 "%s %P exited with fatal code %d " |
| 541 "and can not be respawn", | |
| 542 process, pid, WEXITSTATUS(status)); | |
|
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543 ngx_processes[i].respawn = 0; |
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544 } |
|
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545 } |
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546 } |
| 461 | 547 |
| 548 | |
| 515 | 549 void |
| 550 ngx_debug_point(void) | |
| 461 | 551 { |
| 552 ngx_core_conf_t *ccf; | |
| 553 | |
| 554 ccf = (ngx_core_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx, | |
| 555 ngx_core_module); | |
| 556 | |
| 557 switch (ccf->debug_points) { | |
| 558 | |
| 559 case NGX_DEBUG_POINTS_STOP: | |
| 560 raise(SIGSTOP); | |
| 561 break; | |
| 562 | |
| 563 case NGX_DEBUG_POINTS_ABORT: | |
| 563 | 564 ngx_abort(); |
| 461 | 565 } |
| 566 } | |
|
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567 |
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568 |
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569 ngx_int_t |
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570 ngx_os_signal_process(ngx_cycle_t *cycle, char *name, ngx_int_t pid) |
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571 { |
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572 ngx_signal_t *sig; |
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573 |
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574 for (sig = signals; sig->signo != 0; sig++) { |
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575 if (ngx_strcmp(name, sig->name) == 0) { |
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576 if (kill(pid, sig->signo) != -1) { |
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577 return 0; |
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578 } |
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579 |
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580 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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581 "kill(%P, %d) failed", pid, sig->signo); |
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582 } |
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583 } |
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584 |
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585 return 1; |
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586 } |