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annotate src/os/unix/ngx_time.c @ 179:9f3a78b06c48

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nginx-0.0.1-2003-11-11-21:13:43 import
author Igor Sysoev <igor@sysoev.ru>
date Tue, 11 Nov 2003 18:13:43 +0000
parents a8ff48d26cca
children 4b1a3a4acc60
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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1
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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2 #include <ngx_config.h>
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a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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3 #include <ngx_core.h>
a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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4
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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6 void ngx_localtime(ngx_tm_t *tm)
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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7 {
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9f3a78b06c48 nginx-0.0.1-2003-11-11-21:13:43 import
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8 #if (HAVE_LOCALTIME_R)
9f3a78b06c48 nginx-0.0.1-2003-11-11-21:13:43 import
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9
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a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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10 localtime_r(&ngx_cached_time, tm);
a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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11
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9f3a78b06c48 nginx-0.0.1-2003-11-11-21:13:43 import
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12 #else
9f3a78b06c48 nginx-0.0.1-2003-11-11-21:13:43 import
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13 ngx_tm_t *t;
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9f3a78b06c48 nginx-0.0.1-2003-11-11-21:13:43 import
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15 t = localtime(&ngx_cached_time);
9f3a78b06c48 nginx-0.0.1-2003-11-11-21:13:43 import
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16 *tm = *t;
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17
9f3a78b06c48 nginx-0.0.1-2003-11-11-21:13:43 import
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18 #endif
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19
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a117a7fdf042 nginx-0.0.1-2002-12-16-00:08:04 import
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20 tm->ngx_tm_mon++;
a117a7fdf042 nginx-0.0.1-2002-12-16-00:08:04 import
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21 tm->ngx_tm_year += 1900;
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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22 }
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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25
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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26 #if 0
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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27
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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28 typedef struct {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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29 int busy;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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30 u_int_64 msec;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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31 time_t sec;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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32 tm;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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33 http_time_len;
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b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
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34 http_time[n];
1
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35 };
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36
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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37 volatile *ngx_time_p;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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38
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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39 ngx_time()
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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40 {
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41 p = ngx_time_p;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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42 }
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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43
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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44 ngx_update_time()
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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45 {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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46 u_int64 msec;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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47 struct timeval tv;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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48
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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49 gettimeofday(&tv, NULL);
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50
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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51 msec = (unsigned long) tv.tv_sec * 1000 + tv.tv_usec / 1000;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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52 p = ngx_time_p;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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53
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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54 /* minimum can be for example 0, 10, 50 or 100 ms */
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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55 if (tv_sec > p->sec || msec - p->msec >= minimum) {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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56 old_p = p;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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57 /* max_tries < max_slots - 10,
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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58 max_slots should be more than max of threads */
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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59 for (/* void */; i < max_tries; i++) {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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60 if (++p >= last_slot)
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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61 p = first_slot;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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62
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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63 if (!test_and_set(p->busy)
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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64 break;
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65 }
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66
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67 if (i == max_tries) {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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68 ngx_log_error();
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69 return;
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70 }
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71
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72 if (tv_sec > p->sec) {
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73 p->sec = tv.tv.sec;
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74 p->msec = msec;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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75 localtime_r(&tv.tv_sec, tm);
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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76 make http stirng;
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77
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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78 } else {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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79 ngx_memcpy(p->sec, old_p->sec, sizeof() - offset_of(, sec));
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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80 p->msec = msec;
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81 }
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82
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83 /* here can be too seldom and non-critical race condition */
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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84 if (ngx_time_p == old_p)
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85 ngx_time_p = p;
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86
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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87 unlock(p->busy);
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88 }
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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89 }
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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90
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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91 #endif