| Filename | /usr/share/perl/5.18/Time/Local.pm |
| Statements | Executed 38 statements in 917µs |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 20µs | 50µs | Time::Local::BEGIN@4 |
| 1 | 1 | 1 | 13µs | 68µs | Time::Local::BEGIN@8 |
| 1 | 1 | 1 | 12µs | 14µs | Time::Local::_daygm |
| 1 | 1 | 1 | 9µs | 21µs | Time::Local::BEGIN@5 |
| 1 | 1 | 1 | 8µs | 17µs | Time::Local::BEGIN@6 |
| 1 | 1 | 1 | 7µs | 46µs | Time::Local::BEGIN@27 |
| 1 | 1 | 1 | 5µs | 26µs | Time::Local::BEGIN@28 |
| 1 | 1 | 1 | 5µs | 24µs | Time::Local::BEGIN@29 |
| 1 | 1 | 1 | 2µs | 2µs | Time::Local::CORE:pack (opcode) |
| 0 | 0 | 0 | 0s | 0s | Time::Local::_is_leap_year |
| 0 | 0 | 0 | 0s | 0s | Time::Local::_timegm |
| 0 | 0 | 0 | 0s | 0s | Time::Local::timegm |
| 0 | 0 | 0 | 0s | 0s | Time::Local::timegm_nocheck |
| 0 | 0 | 0 | 0s | 0s | Time::Local::timelocal |
| 0 | 0 | 0 | 0s | 0s | Time::Local::timelocal_nocheck |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package Time::Local; | ||||
| 2 | |||||
| 3 | 1 | 600ns | require Exporter; | ||
| 4 | 2 | 20µs | 2 | 79µs | # spent 50µs (20+30) within Time::Local::BEGIN@4 which was called:
# once (20µs+30µs) by POSIX::strftime::Compiler::BEGIN@7 at line 4 # spent 50µs making 1 call to Time::Local::BEGIN@4
# spent 30µs making 1 call to Exporter::import |
| 5 | 2 | 20µs | 2 | 33µs | # spent 21µs (9+12) within Time::Local::BEGIN@5 which was called:
# once (9µs+12µs) by POSIX::strftime::Compiler::BEGIN@7 at line 5 # spent 21µs making 1 call to Time::Local::BEGIN@5
# spent 12µs making 1 call to Config::import |
| 6 | 2 | 21µs | 2 | 25µs | # spent 17µs (8+8) within Time::Local::BEGIN@6 which was called:
# once (8µs+8µs) by POSIX::strftime::Compiler::BEGIN@7 at line 6 # spent 17µs making 1 call to Time::Local::BEGIN@6
# spent 8µs making 1 call to strict::import |
| 7 | |||||
| 8 | 2 | 93µs | 2 | 124µs | # spent 68µs (13+56) within Time::Local::BEGIN@8 which was called:
# once (13µs+56µs) by POSIX::strftime::Compiler::BEGIN@7 at line 8 # spent 68µs making 1 call to Time::Local::BEGIN@8
# spent 56µs making 1 call to vars::import |
| 9 | 1 | 300ns | $VERSION = '1.2300'; | ||
| 10 | |||||
| 11 | 1 | 7µs | @ISA = qw( Exporter ); | ||
| 12 | 1 | 600ns | @EXPORT = qw( timegm timelocal ); | ||
| 13 | 1 | 300ns | @EXPORT_OK = qw( timegm_nocheck timelocal_nocheck ); | ||
| 14 | |||||
| 15 | 1 | 600ns | my @MonthDays = ( 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ); | ||
| 16 | |||||
| 17 | # Determine breakpoint for rolling century | ||||
| 18 | 1 | 16µs | my $ThisYear = ( localtime() )[5]; | ||
| 19 | 1 | 1µs | my $Breakpoint = ( $ThisYear + 50 ) % 100; | ||
| 20 | 1 | 500ns | my $NextCentury = $ThisYear - $ThisYear % 100; | ||
| 21 | 1 | 200ns | $NextCentury += 100 if $Breakpoint < 50; | ||
| 22 | 1 | 200ns | my $Century = $NextCentury - 100; | ||
| 23 | 1 | 100ns | my $SecOff = 0; | ||
| 24 | |||||
| 25 | 1 | 100ns | my ( %Options, %Cheat ); | ||
| 26 | |||||
| 27 | 2 | 26µs | 2 | 84µs | # spent 46µs (7+39) within Time::Local::BEGIN@27 which was called:
# once (7µs+39µs) by POSIX::strftime::Compiler::BEGIN@7 at line 27 # spent 46µs making 1 call to Time::Local::BEGIN@27
# spent 39µs making 1 call to constant::import |
| 28 | 2 | 20µs | 2 | 46µs | # spent 26µs (5+21) within Time::Local::BEGIN@28 which was called:
# once (5µs+21µs) by POSIX::strftime::Compiler::BEGIN@7 at line 28 # spent 26µs making 1 call to Time::Local::BEGIN@28
# spent 21µs making 1 call to constant::import |
| 29 | 2 | 653µs | 2 | 44µs | # spent 24µs (5+20) within Time::Local::BEGIN@29 which was called:
# once (5µs+20µs) by POSIX::strftime::Compiler::BEGIN@7 at line 29 # spent 24µs making 1 call to Time::Local::BEGIN@29
# spent 20µs making 1 call to constant::import |
| 30 | |||||
| 31 | my $MaxDay; | ||||
| 32 | 1 | 600ns | if ($] < 5.012000) { | ||
| 33 | my $MaxInt; | ||||
| 34 | if ( $^O eq 'MacOS' ) { | ||||
| 35 | # time_t is unsigned... | ||||
| 36 | $MaxInt = ( 1 << ( 8 * $Config{ivsize} ) ) - 1; | ||||
| 37 | } | ||||
| 38 | else { | ||||
| 39 | $MaxInt = ( ( 1 << ( 8 * $Config{ivsize} - 2 ) ) - 1 ) * 2 + 1; | ||||
| 40 | } | ||||
| 41 | |||||
| 42 | $MaxDay = int( ( $MaxInt - ( SECS_PER_DAY / 2 ) ) / SECS_PER_DAY ) - 1; | ||||
| 43 | } | ||||
| 44 | else { | ||||
| 45 | # recent localtime()'s limit is the year 2**31 | ||||
| 46 | 1 | 300ns | $MaxDay = 365 * (2**31); | ||
| 47 | } | ||||
| 48 | |||||
| 49 | # Determine the EPOC day for this machine | ||||
| 50 | 1 | 100ns | my $Epoc = 0; | ||
| 51 | 1 | 1µs | if ( $^O eq 'vos' ) { | ||
| 52 | # work around posix-977 -- VOS doesn't handle dates in the range | ||||
| 53 | # 1970-1980. | ||||
| 54 | $Epoc = _daygm( 0, 0, 0, 1, 0, 70, 4, 0 ); | ||||
| 55 | } | ||||
| 56 | elsif ( $^O eq 'MacOS' ) { | ||||
| 57 | $MaxDay *=2 if $^O eq 'MacOS'; # time_t unsigned ... quick hack? | ||||
| 58 | # MacOS time() is seconds since 1 Jan 1904, localtime | ||||
| 59 | # so we need to calculate an offset to apply later | ||||
| 60 | $Epoc = 693901; | ||||
| 61 | $SecOff = timelocal( localtime(0)) - timelocal( gmtime(0) ) ; | ||||
| 62 | $Epoc += _daygm( gmtime(0) ); | ||||
| 63 | } | ||||
| 64 | else { | ||||
| 65 | 1 | 5µs | 1 | 14µs | $Epoc = _daygm( gmtime(0) ); # spent 14µs making 1 call to Time::Local::_daygm |
| 66 | } | ||||
| 67 | |||||
| 68 | 1 | 700ns | %Cheat = (); # clear the cache as epoc has changed | ||
| 69 | |||||
| 70 | # spent 14µs (12+2) within Time::Local::_daygm which was called:
# once (12µs+2µs) by POSIX::strftime::Compiler::BEGIN@7 at line 65 | ||||
| 71 | |||||
| 72 | # This is written in such a byzantine way in order to avoid | ||||
| 73 | # lexical variables and sub calls, for speed | ||||
| 74 | return $_[3] + ( | ||||
| 75 | 1 | 14µs | 1 | 2µs | $Cheat{ pack( 'ss', @_[ 4, 5 ] ) } ||= do { # spent 2µs making 1 call to Time::Local::CORE:pack |
| 76 | 1 | 400ns | my $month = ( $_[4] + 10 ) % 12; | ||
| 77 | 1 | 900ns | my $year = $_[5] + 1900 - int($month / 10); | ||
| 78 | |||||
| 79 | 1 | 2µs | ( ( 365 * $year ) | ||
| 80 | + int( $year / 4 ) | ||||
| 81 | - int( $year / 100 ) | ||||
| 82 | + int( $year / 400 ) | ||||
| 83 | + int( ( ( $month * 306 ) + 5 ) / 10 ) | ||||
| 84 | ) | ||||
| 85 | - $Epoc; | ||||
| 86 | } | ||||
| 87 | ); | ||||
| 88 | } | ||||
| 89 | |||||
| 90 | sub _timegm { | ||||
| 91 | my $sec = | ||||
| 92 | $SecOff + $_[0] + ( SECS_PER_MINUTE * $_[1] ) + ( SECS_PER_HOUR * $_[2] ); | ||||
| 93 | |||||
| 94 | return $sec + ( SECS_PER_DAY * &_daygm ); | ||||
| 95 | } | ||||
| 96 | |||||
| 97 | sub timegm { | ||||
| 98 | my ( $sec, $min, $hour, $mday, $month, $year ) = @_; | ||||
| 99 | |||||
| 100 | if ( $year >= 1000 ) { | ||||
| 101 | $year -= 1900; | ||||
| 102 | } | ||||
| 103 | elsif ( $year < 100 and $year >= 0 ) { | ||||
| 104 | $year += ( $year > $Breakpoint ) ? $Century : $NextCentury; | ||||
| 105 | } | ||||
| 106 | |||||
| 107 | unless ( $Options{no_range_check} ) { | ||||
| 108 | croak "Month '$month' out of range 0..11" | ||||
| 109 | if $month > 11 | ||||
| 110 | or $month < 0; | ||||
| 111 | |||||
| 112 | my $md = $MonthDays[$month]; | ||||
| 113 | ++$md | ||||
| 114 | if $month == 1 && _is_leap_year( $year + 1900 ); | ||||
| 115 | |||||
| 116 | croak "Day '$mday' out of range 1..$md" if $mday > $md or $mday < 1; | ||||
| 117 | croak "Hour '$hour' out of range 0..23" if $hour > 23 or $hour < 0; | ||||
| 118 | croak "Minute '$min' out of range 0..59" if $min > 59 or $min < 0; | ||||
| 119 | croak "Second '$sec' out of range 0..59" if $sec >= 60 or $sec < 0; | ||||
| 120 | } | ||||
| 121 | |||||
| 122 | my $days = _daygm( undef, undef, undef, $mday, $month, $year ); | ||||
| 123 | |||||
| 124 | unless ($Options{no_range_check} or abs($days) < $MaxDay) { | ||||
| 125 | my $msg = ''; | ||||
| 126 | $msg .= "Day too big - $days > $MaxDay\n" if $days > $MaxDay; | ||||
| 127 | |||||
| 128 | $year += 1900; | ||||
| 129 | $msg .= "Cannot handle date ($sec, $min, $hour, $mday, $month, $year)"; | ||||
| 130 | |||||
| 131 | croak $msg; | ||||
| 132 | } | ||||
| 133 | |||||
| 134 | return $sec | ||||
| 135 | + $SecOff | ||||
| 136 | + ( SECS_PER_MINUTE * $min ) | ||||
| 137 | + ( SECS_PER_HOUR * $hour ) | ||||
| 138 | + ( SECS_PER_DAY * $days ); | ||||
| 139 | } | ||||
| 140 | |||||
| 141 | sub _is_leap_year { | ||||
| 142 | return 0 if $_[0] % 4; | ||||
| 143 | return 1 if $_[0] % 100; | ||||
| 144 | return 0 if $_[0] % 400; | ||||
| 145 | |||||
| 146 | return 1; | ||||
| 147 | } | ||||
| 148 | |||||
| 149 | sub timegm_nocheck { | ||||
| 150 | local $Options{no_range_check} = 1; | ||||
| 151 | return &timegm; | ||||
| 152 | } | ||||
| 153 | |||||
| 154 | sub timelocal { | ||||
| 155 | my $ref_t = &timegm; | ||||
| 156 | my $loc_for_ref_t = _timegm( localtime($ref_t) ); | ||||
| 157 | |||||
| 158 | my $zone_off = $loc_for_ref_t - $ref_t | ||||
| 159 | or return $loc_for_ref_t; | ||||
| 160 | |||||
| 161 | # Adjust for timezone | ||||
| 162 | my $loc_t = $ref_t - $zone_off; | ||||
| 163 | |||||
| 164 | # Are we close to a DST change or are we done | ||||
| 165 | my $dst_off = $ref_t - _timegm( localtime($loc_t) ); | ||||
| 166 | |||||
| 167 | # If this evaluates to true, it means that the value in $loc_t is | ||||
| 168 | # the _second_ hour after a DST change where the local time moves | ||||
| 169 | # backward. | ||||
| 170 | if ( ! $dst_off && | ||||
| 171 | ( ( $ref_t - SECS_PER_HOUR ) - _timegm( localtime( $loc_t - SECS_PER_HOUR ) ) < 0 ) | ||||
| 172 | ) { | ||||
| 173 | return $loc_t - SECS_PER_HOUR; | ||||
| 174 | } | ||||
| 175 | |||||
| 176 | # Adjust for DST change | ||||
| 177 | $loc_t += $dst_off; | ||||
| 178 | |||||
| 179 | return $loc_t if $dst_off > 0; | ||||
| 180 | |||||
| 181 | # If the original date was a non-extent gap in a forward DST jump, | ||||
| 182 | # we should now have the wrong answer - undo the DST adjustment | ||||
| 183 | my ( $s, $m, $h ) = localtime($loc_t); | ||||
| 184 | $loc_t -= $dst_off if $s != $_[0] || $m != $_[1] || $h != $_[2]; | ||||
| 185 | |||||
| 186 | return $loc_t; | ||||
| 187 | } | ||||
| 188 | |||||
| 189 | sub timelocal_nocheck { | ||||
| 190 | local $Options{no_range_check} = 1; | ||||
| 191 | return &timelocal; | ||||
| 192 | } | ||||
| 193 | |||||
| 194 | 1 | 12µs | 1; | ||
| 195 | |||||
| 196 | __END__ | ||||
# spent 2µs within Time::Local::CORE:pack which was called:
# once (2µs+0s) by Time::Local::_daygm at line 75 |