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annotate src/os/unix/ngx_daemon.c @ 6929:3069dd358ba2

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Cancelable timers are now preserved if there are other timers. There is no need to cancel timers early if there are other timers blocking shutdown anyway. Preserving such timers allows nginx to continue some periodic work till the shutdown is actually possible. With the new approach, timers with ev->cancelable are simply ignored when checking if there are any timers left during shutdown.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 07 Mar 2017 18:51:15 +0300
parents b1ba43f905f8
children 8b84d60ef13d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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3 * Copyright (C) Igor Sysoev
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d620f497c50f Copyright updated.
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4 * Copyright (C) Nginx, Inc.
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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5 */
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3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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11
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12 ngx_int_t
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13 ngx_daemon(ngx_log_t *log)
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14 {
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15 int fd;
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16
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17 switch (fork()) {
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18 case -1:
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71ce40b3c37b nginx-0.0.1-2003-11-19-19:26:41 import
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19 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "fork() failed");
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20 return NGX_ERROR;
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21
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22 case 0:
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23 break;
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24
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25 default:
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26 exit(0);
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27 }
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28
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2a0540287298 nginx-0.0.2-2004-02-03-19:43:54 import
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29 ngx_pid = ngx_getpid();
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30
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31 if (setsid() == -1) {
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32 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "setsid() failed");
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33 return NGX_ERROR;
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34 }
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35
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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36 umask(0);
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37
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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38 fd = open("/dev/null", O_RDWR);
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39 if (fd == -1) {
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40 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
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41 "open(\"/dev/null\") failed");
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42 return NGX_ERROR;
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43 }
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3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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45 if (dup2(fd, STDIN_FILENO) == -1) {
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46 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDIN) failed");
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47 return NGX_ERROR;
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48 }
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49
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50 if (dup2(fd, STDOUT_FILENO) == -1) {
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51 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDOUT) failed");
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52 return NGX_ERROR;
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53 }
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54
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00bee6e7b485 nginx-0.0.1-2003-06-15-22:32:13 import
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55 #if 0
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56 if (dup2(fd, STDERR_FILENO) == -1) {
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57 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDERR) failed");
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58 return NGX_ERROR;
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59 }
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00bee6e7b485 nginx-0.0.1-2003-06-15-22:32:13 import
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60 #endif
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61
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62 if (fd > STDERR_FILENO) {
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63 if (close(fd) == -1) {
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64 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "close() failed");
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65 return NGX_ERROR;
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66 }
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67 }
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68
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69 return NGX_OK;
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70 }