source: libcfa/src/time.cfa@ 5ccee64

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 5ccee64 was e3fea42, checked in by Peter A. Buhr <pabuhr@…>, 6 years ago

change "const char *" to "const char []"
  • Property mode set to 100644
File size: 5.3 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2018 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// time.c --
8//
9// Author : Peter A. Buhr
10// Created On : Tue Mar 27 13:33:14 2018
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Tue Feb 4 08:24:18 2020
13// Update Count : 70
14//
15
16#include "time.hfa"
17#include "fstream.hfa"
18#include <stdio.h> // snprintf
19#include <assert.h>
20
21static char * nanomsd( long int ns, char * buf ) { // most significant digits
22 snprintf( buf, 16, ".%09ld", ns );
23 int i;
24 for ( i = 9; buf[i] == '0' ; i -= 1 ); // find least significant digit
25 buf[i + 1] = '\0';
26 return buf;
27} // nanomsd
28
29
30//######################### Duration #########################
31
32
33forall( dtype ostype | ostream( ostype ) ) {
34 ostype & ?|?( ostype & os, Duration dur ) with( dur ) {
35 (ostype &)(os | tn / TIMEGRAN); // print seconds
36 long int ns = (tn < 0 ? -tn : tn) % TIMEGRAN; // compute nanoseconds
37 if ( ns != 0 ) { // some ?
38 char buf[16];
39 (ostype &)(os | nanomsd( ns, buf )); // print nanoseconds
40 } // if
41 return os;
42 } // ?|?
43
44 void ?|?( ostype & os, Duration dur ) with( dur ) {
45 (ostype &)(os | dur); ends( os );
46 } // ?|?
47} // distribution
48
49
50//######################### Time #########################
51
52
53#ifdef __CFA_DEBUG__
54static void tabort( int year, int month, int day, int hour, int min, int sec, int64_t nsec ) {
55 abort | "Attempt to create Time( year=" | year | "(>=1970), month=" | month | "(1-12), day=" | day | "(1-31), hour=" | hour | "(0-23), min=" | min | "(0-59), sec=" | sec
56 | "(0-60), nsec=" | nsec | "(0-999_999_999), which is not in the range 00:00:00 UTC, January 1, 1970 to 03:14:07 UTC, January 19, 2038, where month and day have 1 origin.";
57} // tabort
58#endif // __CFA_DEBUG__
59
60void ?{}( Time & time, int year, int month, int day, int hour, int min, int sec, int64_t nsec ) with( time ) {
61 tm tm;
62
63 // Values can be in any range (+/-) but result must be in the epoch.
64 tm.tm_year = year - 1900; // mktime uses 1900 as its starting point
65 // Make month in range 1-12 to match with day.
66 tm.tm_mon = month - 1; // mktime uses range 0-11
67 tm.tm_mday = day; // mktime uses range 1-31
68 tm.tm_hour = hour;
69 tm.tm_min = min;
70 tm.tm_sec = sec;
71 tm.tm_isdst = -1; // let mktime determine if alternate timezone is in effect
72 time_t epochsec = mktime( &tm );
73#ifdef __CFA_DEBUG__
74 if ( epochsec <= (time_t)-1 ) { // MUST BE LESS THAN OR EQUAL!
75 tabort( year, month, day, hour, min, sec, nsec );
76 } // if
77#endif // __CFA_DEBUG__
78 tn = (int64_t)(epochsec) * TIMEGRAN + nsec; // convert to nanoseconds
79#ifdef __CFA_DEBUG__
80 if ( tn > 2147483647LL * TIMEGRAN ) { // between 00:00:00 UTC, January 1, 1970 and 03:14:07 UTC, January 19, 2038.
81 tabort( year, month, day, hour, min, sec, nsec );
82 } // if
83#endif // __CFA_DEBUG__
84} // ?{}
85
86char * yy_mm_dd( Time time, char * buf ) with( time ) {
87 time_t s = tn / TIMEGRAN;
88 tm tm;
89 gmtime_r( &s, &tm ); // tm_mon <= 11, tm_mday <= 31
90#if defined(__GNUC__) && __GNUC__ >= 7
91#pragma GCC diagnostic push
92#pragma GCC diagnostic ignored "-Wformat-truncation"
93#endif
94 snprintf( buf, 9, "%02d/%02d/%02d", tm.tm_year % 99, tm.tm_mon + 1, tm.tm_mday );
95#if defined(__GNUC__) && __GNUC__ >= 7
96#pragma GCC diagnostic pop
97#endif
98 return buf;
99} // yy_mm_dd
100
101char * mm_dd_yy( Time time, char * buf ) with( time ) {
102 time_t s = tn / TIMEGRAN;
103 tm tm;
104 gmtime_r( &s, &tm ); // tm_mon <= 11, tm_mday <= 31
105#if defined(__GNUC__) && __GNUC__ >= 7
106#pragma GCC diagnostic push
107#pragma GCC diagnostic ignored "-Wformat-truncation"
108#endif
109 snprintf( buf, 9, "%02d/%02d/%02d", tm.tm_mon + 1, tm.tm_mday, tm.tm_year % 99 );
110#if defined(__GNUC__) && __GNUC__ >= 7
111#pragma GCC diagnostic pop
112#endif
113 return buf;
114} // mm_dd_yy
115
116char * dd_mm_yy( Time time, char * buf ) with( time ) {
117 time_t s = tn / TIMEGRAN;
118 tm tm;
119 gmtime_r( &s, &tm ); // tm_mon <= 11, tm_mday <= 31
120#if defined(__GNUC__) && __GNUC__ >= 7
121#pragma GCC diagnostic push
122#pragma GCC diagnostic ignored "-Wformat-truncation"
123#endif
124 snprintf( buf, 9, "%02d/%02d/%02d", tm.tm_mday, tm.tm_mon + 1, tm.tm_year % 99 );
125#if defined(__GNUC__) && __GNUC__ >= 7
126#pragma GCC diagnostic pop
127#endif
128 return buf;
129} // dd_mm_yy
130
131size_t strftime( char buf[], size_t size, const char fmt[], Time time ) with( time ) {
132 time_t s = tn / TIMEGRAN;
133 tm tm;
134 gmtime_r( &s, &tm );
135 return strftime( buf, size, fmt, &tm );
136} // strftime
137
138forall( dtype ostype | ostream( ostype ) ) {
139 ostype & ?|?( ostype & os, Time time ) with( time ) {
140 char buf[32]; // at least 26
141 time_t s = tn / TIMEGRAN;
142 ctime_r( &s, (char *)&buf ); // 26 characters: "Wed Jun 30 21:49:08 1993\n"
143 buf[24] = '\0'; // remove trailing '\n'
144 long int ns = (tn < 0 ? -tn : tn) % TIMEGRAN; // compute nanoseconds
145 if ( ns == 0 ) { // none ?
146 (ostype &)(os | buf); // print date/time/year
147 } else {
148 buf[19] = '\0'; // truncate to "Wed Jun 30 21:49:08"
149 char buf2[16];
150 nanomsd( ns, buf2 ); // compute nanoseconds
151 (ostype &)(os | buf | buf2 | ' ' | &buf[20]); // print date/time, nanoseconds and year
152 } // if
153 return os;
154 } // ?|?
155
156 void ?|?( ostype & os, Time time ) with( time ) {
157 (ostype &)(os | time); ends( os );
158 } // ?|?
159} // distribution
160
161// Local Variables: //
162// mode: c //
163// tab-width: 4 //
164// End: //
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