Mercurial > hg > nginx

annotate src/core/ngx_times.c @ 2220:bf38420c9e25

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ngx_timezone_update()
author Igor Sysoev <igor@sysoev.ru>
date Sat, 30 Aug 2008 19:52:07 +0000
parents 429269167fab
children d4c4cfdffe30 e1409e56ba7c
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
Igor Sysoev <igor@sysoev.ru>
parents: 433
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1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 433
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2 /*
444
42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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parents: 441
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3 * Copyright (C) Igor Sysoev
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 433
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4 */
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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a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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6
a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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parents:
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7 #include <ngx_config.h>
a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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parents:
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8 #include <ngx_core.h>
a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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9
a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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10
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
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11 /*
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
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12 * The time may be updated by signal handler or by several threads.
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
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13 * The time update operations are rare and require to hold the ngx_time_lock.
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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parents: 557
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14 * The time read operations are frequent, so they are lock-free and get time
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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parents: 557
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15 * values and strings from the current slot. Thus thread may get the corrupted
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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parents: 557
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16 * values only if it is preempted while copying and then it is not scheduled
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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parents: 557
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17 * to run more than NGX_TIME_SLOTS seconds.
370
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18 */
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
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19
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9c2f3ed7a247 nginx-0.3.3-RELEASE import
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20 #define NGX_TIME_SLOTS 64
370
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21
932
1b8111df8051 the initial slot is out of array
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22 static ngx_uint_t slot;
563
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23 static ngx_atomic_t ngx_time_lock;
370
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24
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25 volatile ngx_msec_t ngx_current_msec;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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26 volatile ngx_time_t *ngx_cached_time;
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27 volatile ngx_str_t ngx_cached_err_log_time;
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28 volatile ngx_str_t ngx_cached_http_time;
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29 volatile ngx_str_t ngx_cached_http_log_time;
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
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30
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9c2f3ed7a247 nginx-0.3.3-RELEASE import
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31 static ngx_time_t cached_time[NGX_TIME_SLOTS];
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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32 static u_char cached_err_log_time[NGX_TIME_SLOTS]
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33 [sizeof("1970/09/28 12:00:00")];
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34 static u_char cached_http_time[NGX_TIME_SLOTS]
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35 [sizeof("Mon, 28 Sep 1970 06:00:00 GMT")];
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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parents: 557
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36 static u_char cached_http_log_time[NGX_TIME_SLOTS]
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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37 [sizeof("28/Sep/1970:12:00:00 +0600")];
178
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38
a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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39
326
8733703a37f3 nginx-0.0.3-2004-04-26-00:13:21 import
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parents: 324
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40 static char *week[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
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41 static char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
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42 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
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43
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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44 void
d4ea69372b94 nginx-0.1.25-RELEASE import
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45 ngx_time_init(void)
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
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parents: 181
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46 {
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 358
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47 ngx_cached_err_log_time.len = sizeof("1970/09/28 12:00:00") - 1;
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 358
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48 ngx_cached_http_time.len = sizeof("Mon, 28 Sep 1970 06:00:00 GMT") - 1;
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 358
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49 ngx_cached_http_log_time.len = sizeof("28/Sep/1970:12:00:00 +0600") - 1;
323
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents: 297
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50
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 358
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51 ngx_cached_time = &cached_time[0];
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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52
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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53 ngx_time_update(0, 0);
270
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
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54 }
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 245
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55
270
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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56
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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57 void
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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58 ngx_time_update(time_t sec, ngx_uint_t msec)
270
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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59 {
563
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60 u_char *p0, *p1, *p2;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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61 ngx_tm_t tm, gmt;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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62 ngx_time_t *tp;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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63 struct timeval tv;
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
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64
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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65 if (!ngx_trylock(&ngx_time_lock)) {
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e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
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66 return;
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5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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67 }
370
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68
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69 if (sec == 0) {
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70 ngx_gettimeofday(&tv);
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71
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72 sec = tv.tv_sec;
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73 msec = tv.tv_usec / 1000;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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74 }
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75
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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76 ngx_current_msec = (ngx_msec_t) sec * 1000 + msec;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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77
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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78 tp = &cached_time[slot];
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79
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80 if (tp->sec == sec) {
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8a3ba663be1a slot number must be incremented once per second only,
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81 tp->msec = msec;
563
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82 ngx_unlock(&ngx_time_lock);
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83 return;
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84 }
370
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parents: 358
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85
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a62d30719ea1 fix segfault if nginx was build with -O2 -fomit-frame-pointer,
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86 if (slot == NGX_TIME_SLOTS - 1) {
891
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87 slot = 0;
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88 } else {
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89 slot++;
8a3ba663be1a slot number must be incremented once per second only,
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90 }
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91
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92 tp = &cached_time[slot];
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93
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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94 tp->sec = sec;
891
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Igor Sysoev <igor@sysoev.ru>
parents: 563
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95 tp->msec = msec;
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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96
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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97 ngx_gmtime(sec, &gmt);
181
811bdd2af794 nginx-0.0.1-2003-11-12-20:25:12 import
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98
323
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
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99
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4cf9d9b644f7 fix segfault if nginx was build with -O2 -fomit-frame-pointer
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parents: 932
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100 p0 = &cached_http_time[slot][0];
323
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
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parents: 297
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101
563
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102 (void) ngx_sprintf(p0, "%s, %02d %s %4d %02d:%02d:%02d GMT",
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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103 week[gmt.ngx_tm_wday], gmt.ngx_tm_mday,
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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parents: 557
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104 months[gmt.ngx_tm_mon - 1], gmt.ngx_tm_year,
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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parents: 557
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105 gmt.ngx_tm_hour, gmt.ngx_tm_min, gmt.ngx_tm_sec);
323
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents: 297
diff changeset
106
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 461
diff changeset
107 #if (NGX_HAVE_GETTIMEZONE)
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
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parents: 326
diff changeset
108
563
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109 tp->gmtoff = ngx_gettimezone();
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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parents: 557
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110 ngx_gmtime(sec + tp->gmtoff * 60, &tm);
323
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
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parents: 297
diff changeset
111
469
2ff194b74f1e nginx-0.1.9-RELEASE import
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parents: 461
diff changeset
112 #elif (NGX_HAVE_GMTOFF)
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
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113
563
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114 ngx_localtime(sec, &tm);
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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115 tp->gmtoff = (ngx_int_t) (tm.ngx_tm_gmtoff / 60);
323
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116
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
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117 #else
178
a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
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parents:
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118
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119 ngx_localtime(sec, &tm);
9c2f3ed7a247 nginx-0.3.3-RELEASE import
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120 tp->gmtoff = ngx_timezone(tm.ngx_tm_isdst);
178
a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
121
323
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents: 297
diff changeset
122 #endif
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents: 297
diff changeset
123
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents: 297
diff changeset
124
1081
4cf9d9b644f7 fix segfault if nginx was build with -O2 -fomit-frame-pointer
Igor Sysoev <igor@sysoev.ru>
parents: 932
diff changeset
125 p1 = &cached_err_log_time[slot][0];
323
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents: 297
diff changeset
126
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
127 (void) ngx_sprintf(p1, "%4d/%02d/%02d %02d:%02d:%02d",
517
dadfa78d2270 nginx-0.1.33-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
128 tm.ngx_tm_year, tm.ngx_tm_mon,
dadfa78d2270 nginx-0.1.33-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
129 tm.ngx_tm_mday, tm.ngx_tm_hour,
dadfa78d2270 nginx-0.1.33-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
130 tm.ngx_tm_min, tm.ngx_tm_sec);
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
131
323
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents: 297
diff changeset
132
1081
4cf9d9b644f7 fix segfault if nginx was build with -O2 -fomit-frame-pointer
Igor Sysoev <igor@sysoev.ru>
parents: 932
diff changeset
133 p2 = &cached_http_log_time[slot][0];
323
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents: 297
diff changeset
134
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
135 (void) ngx_sprintf(p2, "%02d/%s/%d:%02d:%02d:%02d %c%02d%02d",
517
dadfa78d2270 nginx-0.1.33-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
136 tm.ngx_tm_mday, months[tm.ngx_tm_mon - 1],
dadfa78d2270 nginx-0.1.33-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
137 tm.ngx_tm_year, tm.ngx_tm_hour,
dadfa78d2270 nginx-0.1.33-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
138 tm.ngx_tm_min, tm.ngx_tm_sec,
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
139 tp->gmtoff < 0 ? '-' : '+',
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
140 ngx_abs(tp->gmtoff / 60), ngx_abs(tp->gmtoff % 60));
323
ba876b26b76d nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents: 297
diff changeset
141
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 245
diff changeset
142
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
143 ngx_memory_barrier();
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 245
diff changeset
144
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
145 ngx_cached_time = tp;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
146 ngx_cached_http_time.data = p0;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
147 ngx_cached_err_log_time.data = p1;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
148 ngx_cached_http_log_time.data = p2;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
149
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
150 ngx_unlock(&ngx_time_lock);
178
a8ff48d26cca nginx-0.0.1-2003-11-11-00:09:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
151 }
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
152
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
153
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
154 u_char *
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
155 ngx_http_time(u_char *buf, time_t t)
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
156 {
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
157 ngx_tm_t tm;
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
158
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
159 ngx_gmtime(t, &tm);
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
160
455
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
161 return ngx_sprintf(buf, "%s, %02d %s %4d %02d:%02d:%02d GMT",
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
162 week[tm.ngx_tm_wday],
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
163 tm.ngx_tm_mday,
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
164 months[tm.ngx_tm_mon - 1],
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
165 tm.ngx_tm_year,
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
166 tm.ngx_tm_hour,
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
167 tm.ngx_tm_min,
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
168 tm.ngx_tm_sec);
409
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
169 }
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
170
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
171
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
172 u_char *
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
173 ngx_http_cookie_time(u_char *buf, time_t t)
409
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
174 {
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
175 ngx_tm_t tm;
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
176
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
177 ngx_gmtime(t, &tm);
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
178
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
179 /*
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
180 * Netscape 3.x does not understand 4-digit years at all and
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
181 * 2-digit years more than "37"
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
182 */
8ac40cae79f0 nginx-0.0.10-2004-08-29-07:55:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 388
diff changeset
183
455
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
184 return ngx_sprintf(buf,
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
185 (tm.ngx_tm_year > 2037) ?
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
186 "%s, %02d-%s-%d %02d:%02d:%02d GMT":
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
187 "%s, %02d-%s-%02d %02d:%02d:%02d GMT",
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
188 week[tm.ngx_tm_wday],
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
189 tm.ngx_tm_mday,
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
190 months[tm.ngx_tm_mon - 1],
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
191 (tm.ngx_tm_year > 2037) ? tm.ngx_tm_year:
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
192 tm.ngx_tm_year % 100,
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
193 tm.ngx_tm_hour,
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
194 tm.ngx_tm_min,
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
195 tm.ngx_tm_sec);
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
196 }
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
197
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
198
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
199 void
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
200 ngx_gmtime(time_t t, ngx_tm_t *tp)
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
201 {
1970
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
202 ngx_int_t yday;
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
203 ngx_uint_t n, sec, min, hour, mday, mon, year, wday, days, leap;
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
204
1874
085e536d856d treat time_t as unsigned time
Igor Sysoev <igor@sysoev.ru>
parents: 1640
diff changeset
205 /* the calculation is valid for positive time_t only */
1970
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
206
1874
085e536d856d treat time_t as unsigned time
Igor Sysoev <igor@sysoev.ru>
parents: 1640
diff changeset
207 n = (ngx_uint_t) t;
085e536d856d treat time_t as unsigned time
Igor Sysoev <igor@sysoev.ru>
parents: 1640
diff changeset
208
085e536d856d treat time_t as unsigned time
Igor Sysoev <igor@sysoev.ru>
parents: 1640
diff changeset
209 days = n / 86400;
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
210
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
211 /* Jaunary 1, 1970 was Thursday */
1970
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
212
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
213 wday = (4 + days) % 7;
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
214
1874
085e536d856d treat time_t as unsigned time
Igor Sysoev <igor@sysoev.ru>
parents: 1640
diff changeset
215 n %= 86400;
085e536d856d treat time_t as unsigned time
Igor Sysoev <igor@sysoev.ru>
parents: 1640
diff changeset
216 hour = n / 3600;
085e536d856d treat time_t as unsigned time
Igor Sysoev <igor@sysoev.ru>
parents: 1640
diff changeset
217 n %= 3600;
085e536d856d treat time_t as unsigned time
Igor Sysoev <igor@sysoev.ru>
parents: 1640
diff changeset
218 min = n / 60;
085e536d856d treat time_t as unsigned time
Igor Sysoev <igor@sysoev.ru>
parents: 1640
diff changeset
219 sec = n % 60;
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
220
1970
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
221 /*
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
222 * the algorithm based on Gauss' formula,
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
223 * see src/http/ngx_http_parse_time.c
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
224 */
208
0b67be7d4489 nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
225
1970
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
226 /* days since March 1, 1 BC */
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
227 days = days - (31 + 28) + 719527;
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
228
1970
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
229 /*
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
230 * The "days" should be adjusted to 1 only, however, some March 1st's go
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
231 * to previous year, so we adjust them to 2. This causes also shift of the
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
232 * last Feburary days to next year, but we catch the case when "yday"
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
233 * becomes negative.
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
234 */
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
235
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
236 year = (days + 2) * 400 / (365 * 400 + 100 - 4 + 1);
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
237
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
238 yday = days - (365 * year + year / 4 - year / 100 + year / 400);
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
239
1970
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
240 if (yday < 0) {
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
241 leap = (year % 4 == 0) && (year % 100 || (year % 400 == 0));
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
242 yday = 365 + leap + yday;
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
243 year--;
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
244 }
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 181
diff changeset
245
1970
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
246 /*
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
247 * The empirical formula that maps "yday" to month.
5bb2c374cab2 use more straightforward ngx_gmtime() implementation
Igor Sysoev <igor@sysoev.ru>
parents: 1874
diff changeset
248 * There are at least 10 variants, some of them are:
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249 * mon = (yday + 31) * 15 / 459
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250 * mon = (yday + 31) * 17 / 520
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251 * mon = (yday + 31) * 20 / 612
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252 */
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253
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254 mon = (yday + 31) * 10 / 306;
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255
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256 /* the Gauss' formula that evaluates days before the month */
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257
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258 mday = yday - (367 * mon / 12 - 30) + 1;
182
3c49eaf3f522 nginx-0.0.1-2003-11-13-09:14:05 import
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259
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260 if (yday >= 306) {
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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261
1970
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262 year++;
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263 mon -= 10;
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264
297
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265 /*
324
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266 * there is no "yday" in Win32 SYSTEMTIME
297
ee394e997c77 nginx-0.0.3-2004-03-29-21:43:58 import
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267 *
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268 * yday -= 306;
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269 */
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270
1970
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271 } else {
182
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272
1970
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273 mon += 2;
182
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274
1970
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275 /*
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276 * there is no "yday" in Win32 SYSTEMTIME
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277 *
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278 * yday += 31 + 28 + leap;
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279 */
182
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280 }
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281
290
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282 tp->ngx_tm_sec = (ngx_tm_sec_t) sec;
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283 tp->ngx_tm_min = (ngx_tm_min_t) min;
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284 tp->ngx_tm_hour = (ngx_tm_hour_t) hour;
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285 tp->ngx_tm_mday = (ngx_tm_mday_t) mday;
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286 tp->ngx_tm_mon = (ngx_tm_mon_t) mon;
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287 tp->ngx_tm_year = (ngx_tm_year_t) year;
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288 tp->ngx_tm_wday = (ngx_tm_wday_t) wday;
182
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289 }
2162
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290
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291
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292 time_t
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293 ngx_next_time(time_t when)
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294 {
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295 time_t now, next;
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296 struct tm tm;
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297
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298 now = ngx_time();
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299
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300 ngx_libc_localtime(now, &tm);
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301
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302 tm.tm_hour = (int) (when / 3600);
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303 when %= 3600;
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304 tm.tm_min = (int) (when / 60);
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305 tm.tm_sec = (int) (when % 60);
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306
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307 next = mktime(&tm);
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308
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309 if (next == -1) {
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310 return -1;
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311 }
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312
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313 if (next - now > 0) {
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314 return next;
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315 }
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316
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317 tm.tm_mday++;
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318
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319 /* mktime() should normalize a date (Jan 32, etc) */
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320
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321 next = mktime(&tm);
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322
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323 if (next != -1) {
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324 return next;
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325 }
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326
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327 return -1;
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328 }