1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo |
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3 | // |
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4 | // The contents of this file are covered under the licence agreement in the |
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5 | // file "LICENCE" distributed with Cforall. |
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6 | // |
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7 | // calendar -- |
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8 | // |
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9 | // Author : Peter A. Buhr |
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10 | // Created On : Wed Mar 14 23:18:57 2018 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Thu Mar 22 17:11:19 2018 |
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13 | // Update Count : 495 |
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14 | // |
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15 | |
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16 | #pragma once |
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17 | |
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18 | // http://en.cppreference.com/w/cpp/header/chrono |
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19 | // http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0355r5.html#refcc |
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20 | |
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21 | #include <time.h> |
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22 | extern "C" { |
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23 | #include <sys/time.h> |
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24 | int snprintf( char * buf, size_t size, const char * fmt, ... ); |
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25 | } |
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26 | #include <fstream> |
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27 | |
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28 | enum { |
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29 | CLOCKGRAN = 15_000_000L, // ALWAYS in nanoseconds, MUST BE less than 1 second |
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30 | TIMEGRAN = 1_000_000_000L // nanosecond granularity, except for timeval |
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31 | }; |
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32 | |
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33 | |
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34 | #if defined( REALTIME_POSIX ) |
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35 | #define tv_XSEC tv_nsec |
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36 | #else |
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37 | #define tv_XSEC tv_usec |
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38 | #endif |
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39 | |
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40 | |
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41 | #if defined( __linux__ ) |
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42 | // fake a few things |
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43 | #define CLOCK_REALTIME 0 // real (clock on the wall) time |
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44 | #endif |
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45 | |
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46 | // conversions for existing time types |
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47 | static inline void ?{}( timeval & t ) {} |
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48 | static inline void ?{}( timeval & t, time_t sec ) { t.tv_sec = sec; t.tv_usec = 0; } |
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49 | static inline void ?{}( timeval & t, time_t sec, suseconds_t usec ) { t.tv_sec = sec; t.tv_usec = usec; } |
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50 | |
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51 | static inline void ?{}( timespec & t ) {} |
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52 | static inline void ?{}( timespec & t, time_t sec ) { t.tv_sec = sec; t.tv_nsec = 0; } |
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53 | static inline void ?{}( timespec & t, time_t sec, __syscall_slong_t nsec ) { t.tv_sec = sec; t.tv_nsec = nsec; } |
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54 | |
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55 | static inline char * ctime( time_t tp ) { char * buf = ctime( &tp ); buf[24] = '\0'; return buf; } |
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56 | static inline char * ctime_r( time_t tp, char * buf ) { ctime_r( &tp, buf ); buf[24] = '\0'; return buf; } |
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57 | static inline tm * gmtime( time_t tp ) { return gmtime( &tp ); } |
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58 | static inline tm * gmtime_r( time_t tp, tm * result ) { return gmtime_r( &tp, result ); } |
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59 | static inline tm * localtime( time_t tp ) { return localtime( &tp ); } |
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60 | static inline tm * localtime_r( time_t tp, tm * result ) { return localtime_r( &tp, result ); } |
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61 | |
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62 | |
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63 | //######################### Duration ######################### |
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64 | |
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65 | struct Duration { |
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66 | int64_t tv; |
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67 | }; |
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68 | |
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69 | static inline void ?{}( Duration & dur ) with( dur ) { tv = 0; } |
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70 | static inline void ?{}( Duration & dur, Duration d ) with( dur ) { tv = d.tv; } |
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71 | |
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72 | static inline void ?{}( Duration & dur, timeval t ) with( dur ) { |
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73 | tv = (int64_t)t.tv_sec * TIMEGRAN + t.tv_usec * 1000; |
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74 | } // Duration |
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75 | |
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76 | static inline void ?{}( Duration & dur, timespec t ) with( dur ) { |
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77 | tv = (int64_t)t.tv_sec * TIMEGRAN + t.tv_nsec; |
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78 | } // Duration |
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79 | |
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80 | static inline Duration ?=?( Duration & dur, timeval t ) with( dur ) { |
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81 | tv = (int64_t)t.tv_sec * TIMEGRAN + t.tv_usec * 1000; |
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82 | return dur; |
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83 | } // ?=? |
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84 | |
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85 | static inline Duration ?=?( Duration & dur, timespec t ) with( dur ) { |
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86 | tv = (int64_t)t.tv_sec * TIMEGRAN + t.tv_nsec; |
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87 | return dur; |
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88 | } // ?=? timespec |
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89 | |
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90 | static inline void ?{}( timeval & t, Duration dur ) with( dur ) { |
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91 | t.tv_sec = tv / TIMEGRAN; // seconds |
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92 | t.tv_usec = tv % TIMEGRAN / ( TIMEGRAN / 1000000L ); // microseconds |
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93 | } // ?{} |
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94 | |
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95 | static inline void ?{}( timespec & t, Duration dur ) with( dur ) { |
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96 | t.tv_sec = tv / TIMEGRAN; // seconds |
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97 | t.tv_nsec = tv % TIMEGRAN; // nanoseconds |
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98 | } // Timespec |
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99 | |
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100 | static inline int64_t nsecs( Duration dur ) with( dur ) { return tv; } |
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101 | |
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102 | static inline Duration +?( Duration rhs ) with( rhs ) { return (Duration)@{ +tv }; } |
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103 | static inline Duration ?+?( Duration & lhs, Duration rhs ) { return (Duration)@{ lhs.tv + rhs.tv }; } |
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104 | static inline Duration ?+=?( Duration & lhs, Duration rhs ) { lhs = lhs + rhs; return lhs; } |
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105 | |
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106 | static inline Duration -?( Duration rhs ) with( rhs ) { return (Duration)@{ -tv }; } |
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107 | static inline Duration ?-?( Duration & lhs, Duration rhs ) { return (Duration)@{ lhs.tv - rhs.tv }; } |
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108 | static inline Duration ?-=?( Duration & lhs, Duration rhs ) { lhs = lhs - rhs; return lhs; } |
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109 | |
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110 | static inline Duration ?*?( Duration lhs, int64_t rhs ) { return (Duration)@{ lhs.tv * rhs }; } |
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111 | static inline Duration ?*?( int64_t lhs, Duration rhs ) { return (Duration)@{ lhs * rhs.tv }; } |
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112 | static inline Duration ?*=?( Duration & lhs, int64_t rhs ) { lhs = lhs * rhs; return lhs; } |
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113 | |
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114 | static inline Duration ?/?( Duration lhs, int64_t rhs ) { return (Duration)@{ lhs.tv / rhs }; } |
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115 | static inline int64_t ?/?( Duration lhs, Duration rhs ) { return lhs.tv / rhs.tv; } |
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116 | static inline Duration ?/=?( Duration & lhs, int64_t rhs ) { lhs = lhs / rhs; return lhs; } |
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117 | |
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118 | static inline Duration ?%?( Duration lhs, int64_t rhs ) { return (Duration)@{ lhs.tv % rhs }; } |
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119 | static inline int64_t ?%?( int64_t lhs, Duration rhs ) { return lhs % (rhs.tv / TIMEGRAN); } |
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120 | static inline int64_t ?%?( Duration lhs, Duration rhs ) { return lhs.tv % rhs.tv; } |
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121 | |
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122 | static inline _Bool ?==?( Duration lhs, Duration rhs ) { return lhs.tv == rhs.tv; } |
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123 | static inline _Bool ?!=?( Duration lhs, Duration rhs ) { return lhs.tv != rhs.tv; } |
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124 | static inline _Bool ?<?( Duration lhs, Duration rhs ) { return lhs.tv < rhs.tv; } |
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125 | static inline _Bool ?<=?( Duration lhs, Duration rhs ) { return lhs.tv <= rhs.tv; } |
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126 | static inline _Bool ?>?( Duration lhs, Duration rhs ) { return lhs.tv > rhs.tv; } |
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127 | static inline _Bool ?>=?( Duration lhs, Duration rhs ) { return lhs.tv >= rhs.tv; } |
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128 | |
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129 | static inline Duration abs( Duration lhs ) { |
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130 | return lhs.tv >= 0 ? lhs : -lhs; |
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131 | } // abs |
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132 | |
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133 | static inline forall( dtype ostype | ostream( ostype ) ) |
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134 | ostype & ?|?( ostype & os, Duration dur ) with( dur ) { |
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135 | os | tv / TIMEGRAN; |
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136 | char buf[16]; |
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137 | snprintf( buf, 16, "%09ld", ((tv < 0 ? -tv : tv) % TIMEGRAN) ); |
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138 | int i; |
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139 | for ( i = 8; i >= 0 && buf[i] == '0' ; i -= 1 ); // find least significant digit |
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140 | if ( i != -1 ) { buf[i + 1] = '\0'; os | '.' | buf; } |
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141 | return os; |
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142 | } |
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143 | |
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144 | static inline Duration ?`ns( int64_t nsec ) { return (Duration)@{ nsec }; } |
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145 | static inline Duration ?`us( int64_t usec ) { return (Duration)@{ usec * (TIMEGRAN / 1_000l) }; } |
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146 | static inline Duration ?`ms( int64_t msec ) { return (Duration)@{ msec * (TIMEGRAN / 1_000_000l) }; } |
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147 | static inline Duration ?`s ( int64_t sec ) { return (Duration)@{ sec * TIMEGRAN }; } |
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148 | static inline Duration ?`s ( double sec ) { return (Duration)@{ sec * TIMEGRAN }; } |
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149 | static inline Duration ?`m ( int64_t min ) { return (Duration)@{ min * (60L * TIMEGRAN) }; } |
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150 | static inline Duration ?`m ( double min ) { return (Duration)@{ min * (60L * TIMEGRAN) }; } |
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151 | static inline Duration ?`h ( int64_t hours ) { return (Duration)@{ hours * (3600L * TIMEGRAN) }; } |
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152 | static inline Duration ?`h ( double hours ) { return (Duration)@{ hours * (3600L * TIMEGRAN) }; } |
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153 | static inline Duration ?`d ( int64_t days ) { return (Duration)@{ days * (24L * 3600L * TIMEGRAN) }; } |
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154 | static inline Duration ?`d ( double days ) { return (Duration)@{ days * (24L * 3600L * TIMEGRAN) }; } |
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155 | static inline Duration ?`w ( int64_t weeks ) { return (Duration)@{ weeks * (7L * 24L * 3600L * TIMEGRAN) }; } |
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156 | static inline Duration ?`f ( int64_t fortnight ) { return (Duration)@{ fortnight * (14L * 24L * 3600L * TIMEGRAN) }; } |
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157 | |
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158 | static inline int64_t ?`s ( Duration dur ) { return dur.tv / TIMEGRAN; } |
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159 | static inline int64_t ?`m ( Duration dur ) { return dur.tv / (60L * TIMEGRAN); } |
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160 | static inline int64_t ?`h ( Duration dur ) { return dur.tv / (3600L * TIMEGRAN); } |
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161 | static inline int64_t ?`d ( Duration dur ) { return dur.tv / (24L * 3600L * TIMEGRAN); } |
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162 | static inline int64_t ?`w ( Duration dur ) { return dur.tv / (7L * 24L * 3600L * TIMEGRAN); } |
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163 | static inline int64_t ?`f ( Duration dur ) { return dur.tv / (14L * 24L * 3600L * TIMEGRAN); } |
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164 | |
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165 | |
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166 | //######################### Time ######################### |
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167 | |
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168 | |
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169 | struct Time { |
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170 | uint64_t tv; |
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171 | }; |
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172 | |
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173 | #ifdef __CFA_DEBUG__ |
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174 | #define CreateFmt "Attempt to create Time( year=%d, month=%d, day=%d, hour=%d, min=%d, sec=%d, nsec=%d ), " \ |
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175 | "which exceeds range 00:00:00 UTC, January 1, 1970 to 03:14:07 UTC, January 19, 2038." |
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176 | #endif // __CFA_DEBUG__ |
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177 | |
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178 | void mktime( Time & time, int year, int month, int day, int hour, int min, int sec, int nsec ) with( time ) { |
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179 | tm tm; |
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180 | |
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181 | // tzset(); // initialize time global variables |
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182 | tm.tm_isdst = -1; // let mktime determine if alternate timezone is in effect |
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183 | tm.tm_year = year - 1900; // mktime uses 1900 as its starting point |
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184 | tm.tm_mon = month - 1; |
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185 | tm.tm_mday = day; // mktime uses range 1-31 |
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186 | tm.tm_hour = hour; |
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187 | tm.tm_min = min; |
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188 | tm.tm_sec = sec; |
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189 | time_t epochsec = mktime( &tm ); |
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190 | #ifdef __CFA_DEBUG__ |
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191 | if ( epochsec == (time_t)-1 ) { |
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192 | abort( CreateFmt, year, month, day, hour, min, sec, nsec ); |
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193 | } // if |
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194 | #endif // __CFA_DEBUG__ |
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195 | tv = (int64_t)(epochsec) * TIMEGRAN + nsec; // convert to nanoseconds |
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196 | #ifdef __CFA_DEBUG__ |
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197 | if ( tv > 2147483647LL * TIMEGRAN ) { // between 00:00:00 UTC, January 1, 1970 and 03:14:07 UTC, January 19, 2038. |
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198 | abort( CreateFmt, year, month, day, hour, min, sec, nsec ); |
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199 | } // if |
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200 | #endif // __CFA_DEBUG__ |
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201 | } // mktime |
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202 | |
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203 | static inline void ?{}( Time & t ) with( t ) { |
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204 | tv = 0; |
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205 | } // Time |
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206 | |
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207 | // These two constructors must not call mktime because it calls malloc. The malloc calls lead to recursion problems |
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208 | // because Time values are created from the sigalrm handler in composing the next context switch event. |
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209 | |
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210 | static inline void ?{}( Time & t, int sec ) with( t ) { |
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211 | #ifdef __CFA_DEBUG__ |
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212 | if ( tv < 0 || tv > 2147483647LL ) { // between 00:00:00 UTC, January 1, 1970 and 03:14:07 UTC, January 19, 2038. |
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213 | abort( CreateFmt, 1970, 0, 0, 0, 0, sec, 0 ); |
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214 | } // if |
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215 | #endif // __CFA_DEBUG__ |
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216 | tv = (int64_t)sec * TIMEGRAN; |
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217 | } // Time |
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218 | |
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219 | static inline void ?{}( Time & t, int sec, int nsec ) with( t ) { |
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220 | #ifdef __U_DEBUG__ |
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221 | if ( tv < 0 || tv > 2147483647LL || nsec < 0 ) { // between 00:00:00 UTC, January 1, 1970 and 03:14:07 UTC, January 19, 2038. |
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222 | abort( CreateFmt, 1970, 0, 0, 0, 0, sec, nsec ); |
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223 | } // if |
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224 | #endif // __U_DEBUG__ |
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225 | tv = (int64_t)sec * TIMEGRAN + nsec; |
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226 | } // Time |
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227 | |
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228 | static inline void ?{}( Time & time, int min, int sec, long int nsec ) { |
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229 | mktime( time, 1970, 1, 1, 0, min, sec, nsec ); |
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230 | } // Time |
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231 | |
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232 | static inline void ?{}( Time & time, int hour, int min, int sec, long int nsec ) { |
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233 | mktime( time, 1970, 1, 1, hour, min, sec, nsec ); |
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234 | } // Time |
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235 | |
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236 | static inline void ?{}( Time & time, int day, int hour, int min, int sec, long int nsec ) { |
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237 | mktime( time, 1970, 1, day, hour, min, sec, nsec ); |
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238 | } // Time |
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239 | |
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240 | static inline void ?{}( Time & time, int month, int day, int hour, int min, int sec, long int nsec ) { |
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241 | mktime( time, 1970, month, day, hour, min, sec, nsec ); |
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242 | } // Time |
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243 | |
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244 | static inline void ?{}( Time & time, int year, int month, int day, int hour, int min, int sec, long int nsec ) { |
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245 | mktime( time, year, month, day, hour, min, sec, nsec ); |
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246 | } // Time |
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247 | |
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248 | static inline void ?{}( Time & time, timeval t ) with( time ) { |
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249 | tv = (int64_t)t.tv_sec * TIMEGRAN + t.tv_usec * 1000; |
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250 | } // Time |
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251 | |
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252 | static inline void ?{}( Time & time, timespec t ) with( time ) { |
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253 | tv = (int64_t)t.tv_sec * TIMEGRAN + t.tv_nsec; |
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254 | } // Time |
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255 | |
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256 | static inline Time ?=?( Time & time, timeval t ) with( time ) { |
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257 | tv = (int64_t)t.tv_sec * TIMEGRAN + t.tv_usec * 1000; |
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258 | return time; |
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259 | } // ?=? |
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260 | |
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261 | static inline Time ?=?( Time & time, timespec t ) with( time ) { |
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262 | tv = (int64_t)t.tv_sec * TIMEGRAN + t.tv_nsec; |
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263 | return time; |
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264 | } // ?=? |
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265 | |
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266 | static inline void ?{}( timeval & t, Time time ) with( time ) { |
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267 | t.tv_sec = tv / TIMEGRAN; // seconds |
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268 | t.tv_usec = tv % TIMEGRAN / ( TIMEGRAN / 1_000_000L ); // microseconds |
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269 | } // ?{} |
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270 | |
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271 | static inline void ?{}( timespec & t, Time time ) with( time ) { |
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272 | t.tv_sec = tv / TIMEGRAN; // seconds |
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273 | t.tv_nsec = tv % TIMEGRAN; // nanoseconds |
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274 | } // ?{} |
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275 | |
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276 | static inline int64_t nsec( Time time ) with( time ) { return tv; } |
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277 | |
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278 | static inline Time ?+?( Time & lhs, Duration rhs ) { return (Time)@{ lhs.tv + rhs.tv }; } |
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279 | static inline Time ?+?( Duration lhs, Time rhs ) { return rhs + lhs; } |
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280 | static inline Time ?+=?( Time & lhs, Duration rhs ) { lhs = lhs + rhs; return lhs; } |
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281 | |
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282 | static inline Duration ?-?( Time lhs, Time rhs ) { return (Duration)@{ lhs.tv - rhs.tv }; } |
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283 | static inline Time ?-?( Time lhs, Duration rhs ) { return (Time)@{ lhs.tv - rhs.tv }; } |
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284 | static inline Time ?-=?( Time & lhs, Duration rhs ) { lhs = lhs - rhs; return lhs; } |
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285 | static inline _Bool ?==?( Time lhs, Time rhs ) { return lhs.tv == rhs.tv; } |
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286 | static inline _Bool ?!=?( Time lhs, Time rhs ) { return lhs.tv != rhs.tv; } |
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287 | static inline _Bool ?<?( Time lhs, Time rhs ) { return lhs.tv < rhs.tv; } |
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288 | static inline _Bool ?<=?( Time lhs, Time rhs ) { return lhs.tv <= rhs.tv; } |
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289 | static inline _Bool ?>?( Time lhs, Time rhs ) { return lhs.tv > rhs.tv; } |
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290 | static inline _Bool ?>=?( Time lhs, Time rhs ) { return lhs.tv >= rhs.tv; } |
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291 | |
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292 | static inline char * yymmd( Time time, char * buf ) with( time ) { |
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293 | tm tm; |
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294 | time_t s = tv / TIMEGRAN; |
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295 | gmtime_r( &s, &tm ); |
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296 | snprintf( buf, 9, "%02d/%02d/%02d", tm.tm_year % 99, tm.tm_mon, tm.tm_mday ); |
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297 | return buf; |
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298 | } // yymmd |
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299 | |
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300 | static inline char * mmyyd( Time time, char * buf ) with( time ) { |
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301 | tm tm; |
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302 | time_t s = tv / TIMEGRAN; |
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303 | gmtime_r( &s, &tm ); |
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304 | snprintf( buf, 9, "%02d/%02d/%02d", tm.tm_mon, tm.tm_year % 99, tm.tm_mday ); |
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305 | return buf; |
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306 | } // yymmd |
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307 | |
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308 | static inline char * dmmyy( Time time, char * buf ) with( time ) { |
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309 | tm tm; |
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310 | time_t s = tv / TIMEGRAN; |
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311 | gmtime_r( &s, &tm ); |
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312 | snprintf( buf, 9, "%02d/%02d/%02d", tm.tm_mday, tm.tm_mon, tm.tm_year % 99 ); |
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313 | return buf; |
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314 | } // yymmd |
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315 | |
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316 | static inline forall( dtype ostype | ostream( ostype ) ) |
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317 | ostype & ?|?( ostype & os, Time time ) with( time ) { |
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318 | char buf[32]; // at least 26 |
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319 | time_t s = tv / TIMEGRAN; |
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320 | tm tm; |
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321 | gmtime_r( &s, &tm ); // ctime_r adjusts for timezone |
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322 | asctime_r( &tm, (char *)&buf ); |
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323 | buf[24] = '\0'; // remove trailing '\n' |
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324 | long int ns = (tv < 0 ? -tv : tv) % TIMEGRAN; |
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325 | if ( ns == 0 ) { |
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326 | os | buf; |
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327 | } else { |
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328 | buf[19] = '\0'; |
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329 | os | buf; |
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330 | char buf2[16]; |
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331 | snprintf( buf2, 16, "%09ld", ns ); |
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332 | int i; |
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333 | for ( i = 8; i >= 0 && buf2[i] == '0' ; i -= 1 ); // find least significant digit |
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334 | if ( i != -1 ) { buf2[i + 1] = '\0'; os | '.' | buf2; } |
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335 | os | ' ' | &buf[20]; |
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336 | } // if |
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337 | return os; |
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338 | } // ?|? |
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339 | |
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340 | //######################### Clock ######################### |
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341 | |
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342 | |
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343 | struct Clock { |
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344 | Duration offset; // for virtual clock: contains offset from real-time |
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345 | int clocktype; // implementation only -1 (virtual), CLOCK_REALTIME |
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346 | }; |
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347 | |
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348 | void resetClock( Clock & clk ) with( clk ) { |
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349 | clocktype = CLOCK_REALTIME; |
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350 | } // Clock::resetClock |
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351 | |
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352 | void resetClock( Clock & clk, Duration adj ) with( clk ) { |
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353 | clocktype = -1; |
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354 | Duration tz = (timeval){ timezone, 0 }; |
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355 | offset = adj + tz; |
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356 | } // resetClock |
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357 | |
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358 | void ?{}( Clock & clk ) { |
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359 | resetClock( clk ); |
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360 | } // Clock |
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361 | |
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362 | void ?{}( Clock & clk, Duration adj ) { |
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363 | resetClock( clk, adj ); |
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364 | } // Clock |
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365 | |
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366 | Duration getRes() { |
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367 | struct timespec res; |
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368 | clock_getres( CLOCK_REALTIME, &res ); |
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369 | return (Duration){ res }; |
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370 | } // getRes |
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371 | |
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372 | Time getTime() { |
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373 | timespec curr; |
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374 | clock_gettime( CLOCK_REALTIME_COARSE, &curr ); |
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375 | return (Time){ curr }; |
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376 | } // getTime |
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377 | |
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378 | Time getTime( Clock & clk ) with( clk ) { |
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379 | return getTime() + offset; |
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380 | } // getTime |
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381 | |
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382 | Time ?()( Clock & clk ) with( clk ) { // alternative syntax |
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383 | return getTime() + offset; |
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384 | } // getTime |
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385 | |
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386 | timeval getTime( Clock & clk ) { |
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387 | return (timeval){ clk() }; |
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388 | } // getTime |
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389 | |
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390 | tm getTime( Clock & clk ) with( clk ) { |
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391 | tm ret; |
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392 | localtime_r( getTime( clk ).tv_sec, &ret ); |
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393 | return ret; |
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394 | } // getTime |
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395 | |
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396 | // Local Variables: // |
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397 | // mode: c // |
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398 | // tab-width: 4 // |
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399 | // End: // |
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400 | |
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