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1 /*
2  * Copyright (C) 1996-2022 The Squid Software Foundation and contributors
3  *
4  * Squid software is distributed under GPLv2+ license and includes
5  * contributions from numerous individuals and organizations.
6  * Please see the COPYING and CONTRIBUTORS files for details.
7  */
8 
9 /* DEBUG: section 21 Time Functions */
10 
11 #include "squid.h"
12 #include "time/gadgets.h"
13 
14 #include <iomanip>
15 #include <ostream>
16 
17 struct timeval current_time;
19 time_t squid_curtime = 0;
20 
21 time_t
23 {
24 #if GETTIMEOFDAY_NO_TZP
25  gettimeofday(&current_time);
26 #else
27 
28  gettimeofday(&current_time, NULL);
29 #endif
30 
31  current_dtime = (double) current_time.tv_sec +
32  (double) current_time.tv_usec / 1000000.0;
33  return squid_curtime = current_time.tv_sec;
34 }
35 
36 int
37 tvSubUsec(struct timeval t1, struct timeval t2)
38 {
39  return (t2.tv_sec - t1.tv_sec) * 1000000 +
40  (t2.tv_usec - t1.tv_usec);
41 }
42 
43 double
44 tvSubDsec(struct timeval t1, struct timeval t2)
45 {
46  return (double) (t2.tv_sec - t1.tv_sec) +
47  (double) (t2.tv_usec - t1.tv_usec) / 1000000.0;
48 }
49 
50 int
51 tvSubMsec(struct timeval t1, struct timeval t2)
52 {
53  return (t2.tv_sec - t1.tv_sec) * 1000 +
54  (t2.tv_usec - t1.tv_usec) / 1000;
55 }
56 
57 void
58 tvSub(struct timeval &res, struct timeval const &t1, struct timeval const &t2)
59 {
60  res.tv_sec = t2.tv_sec - t1.tv_sec;
61  if (t2.tv_usec >= t1.tv_usec)
62  res.tv_usec = t2.tv_usec - t1.tv_usec;
63  else {
64  res.tv_sec -= 1;
65  res.tv_usec = t2.tv_usec + 1000000 - t1.tv_usec;
66  }
67 }
68 
69 void tvAdd(struct timeval &res, struct timeval const &t1, struct timeval const &t2)
70 {
71  res.tv_sec = t1.tv_sec + t2.tv_sec;
72  res.tv_usec = t1.tv_usec + t2.tv_usec;
73  if (res.tv_usec >= 1000000) {
74  ++res.tv_sec;
75  res.tv_usec -= 1000000;
76  }
77 }
78 
79 void tvAssignAdd(struct timeval &t, struct timeval const &add)
80 {
81  t.tv_sec += add.tv_sec;
82  t.tv_usec += add.tv_usec;
83  if (t.tv_usec >= 1000000) {
84  ++t.tv_sec;
85  t.tv_usec -= 1000000;
86  }
87 }
88 
89 std::ostream &
90 operator <<(std::ostream &os, const timeval &t)
91 {
92  os << t.tv_sec << ".";
93  const auto savedFill = os.fill('0');
94  os << std::setw(6) << t.tv_usec;
95  os.fill(savedFill);
96  return os;
97 }
98 
99 const char *
101 {
102  struct tm *tm;
103  static char buf[128];
104  static time_t last_t = 0;
105 
106  if (t != last_t) {
107  tm = localtime(&t);
108  strftime(buf, 127, "%Y/%m/%d %H:%M:%S", tm);
109  last_t = t;
110  }
111 
112  return buf;
113 }
114 
115 const char *
117 {
118  static char buf[128];
119  static time_t last_t = 0;
120 
121  if (t != last_t) {
122  struct tm *gmt = gmtime(&t);
123 
124 #if !USE_GMT
125  int gmt_min, gmt_hour, gmt_yday, day_offset;
126  size_t len;
127  struct tm *lt;
128  int min_offset;
129 
130  /* localtime & gmtime may use the same static data */
131  gmt_min = gmt->tm_min;
132  gmt_hour = gmt->tm_hour;
133  gmt_yday = gmt->tm_yday;
134 
135  lt = localtime(&t);
136 
137  day_offset = lt->tm_yday - gmt_yday;
138  /* wrap round on end of year */
139  if (day_offset > 1)
140  day_offset = -1;
141  else if (day_offset < -1)
142  day_offset = 1;
143 
144  min_offset = day_offset * 1440 + (lt->tm_hour - gmt_hour) * 60
145  + (lt->tm_min - gmt_min);
146 
147  len = strftime(buf, 127 - 5, "%d/%b/%Y:%H:%M:%S ", lt);
148  snprintf(buf + len, 128 - len, "%+03d%02d",
149  (min_offset / 60) % 24,
150  min_offset % 60);
151 #else /* USE_GMT */
152  buf[0] = '\0';
153  strftime(buf, 127, "%d/%b/%Y:%H:%M:%S -000", gmt);
154 #endif /* USE_GMT */
155 
156  last_t = t;
157  }
158 
159  return buf;
160 }
161 
double tvSubDsec(struct timeval t1, struct timeval t2)
Definition: gadgets.cc:44
void tvAssignAdd(struct timeval &t, struct timeval const &add)
Definition: gadgets.cc:79
void tvAdd(struct timeval &res, struct timeval const &t1, struct timeval const &t2)
Definition: gadgets.cc:69
int tvSubMsec(struct timeval t1, struct timeval t2)
Definition: gadgets.cc:51
const char * FormatHttpd(time_t)
Definition: gadgets.cc:116
struct timeval current_time
the current UNIX time in timeval {seconds, microseconds} format
Definition: gadgets.cc:17
#define NULL
Definition: types.h:166
void EVH void double
Definition: stub_event.cc:16
std::ostream & operator<<(std::ostream &os, const timeval &t)
prints <seconds>.<microseconds>
Definition: gadgets.cc:90
time_t squid_curtime
the current UNIX time in seconds
Definition: gadgets.cc:19
int tvSubUsec(struct timeval t1, struct timeval t2)
Definition: gadgets.cc:37
const char * FormatStrf(time_t)
Definition: gadgets.cc:100
time_t getCurrentTime()
Definition: gadgets.cc:22
double current_dtime
the current UNIX time in seconds (with microsecond precision)
Definition: gadgets.cc:18
void tvSub(struct timeval &res, struct timeval const &t1, struct timeval const &t2)
Definition: gadgets.cc:58

 

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