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annotate src/os/unix/ngx_time.c @ 1:d220029ac7f3

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nginx-0.0.1-2002-08-15-21:20:26 import
author Igor Sysoev <igor@sysoev.ru>
date Thu, 15 Aug 2002 17:20:26 +0000
parents 4eff17414a43
children a117a7fdf042
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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>
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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3 #include <ngx_time.h>
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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4
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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5 void ngx_localtime(ngx_tm_t *tm)
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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6 {
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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7 time_t clock = time(NULL);
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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8 localtime_r(&clock, tm);
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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9 }
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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11 u_int ngx_msec(void)
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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12 {
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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13 struct timeval tv;
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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14
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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15 gettimeofday(&tv, NULL);
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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16
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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17 return tv.tv_sec * 1000 + tv.tv_usec / 1000;
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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18 }
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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19
1
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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20
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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21 #if 0
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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22
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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23 typedef struct {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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24 int busy;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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25 u_int_64 msec;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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26 time_t sec;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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27 tm;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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28 http_time_len;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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29 http_time[n];
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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30 };
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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31
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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32 volatile *ngx_time_p;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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33
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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34 ngx_time()
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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35 {
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36 p = ngx_time_p;
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37 }
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_update_time()
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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40 {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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41 u_int64 msec;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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42 struct timeval tv;
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
Igor Sysoev <igor@sysoev.ru>
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44 gettimeofday(&tv, NULL);
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
Igor Sysoev <igor@sysoev.ru>
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46 msec = (unsigned long) tv.tv_sec * 1000 + tv.tv_usec / 1000;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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47 p = ngx_time_p;
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 /* minimum can be for example 0, 10, 50 or 100 ms */
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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50 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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51 old_p = p;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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52 /* max_tries < max_slots - 10,
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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53 max_slots should be more than max of threads */
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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54 for (/* void */; i < max_tries; i++) {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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55 if (++p >= last_slot)
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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56 p = first_slot;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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57
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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58 if (!test_and_set(p->busy)
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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59 break;
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60 }
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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61
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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62 if (i == max_tries) {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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63 ngx_log_error();
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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64 return;
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65 }
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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66
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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67 if (tv_sec > p->sec) {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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68 p->sec = tv.tv.sec;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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69 p->msec = msec;
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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70 localtime_r(&tv.tv_sec, tm);
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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71 make http stirng;
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72
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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73 } else {
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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74 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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75 p->msec = msec;
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76 }
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77
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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78 /* 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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79 if (ngx_time_p == old_p)
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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80 ngx_time_p = p;
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81
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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82 unlock(p->busy);
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83 }
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84 }
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85
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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86 #endif