| Filename | /2home/ss5/perl5/perlbrew/perls/perl-5.12.3/lib/5.12.3/Time/Local.pm |
| Statements | Executed 44 statements in 888µs |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 16µs | 76µs | Time::Local::BEGIN@8 |
| 1 | 1 | 1 | 16µs | 73µs | Time::Local::BEGIN@4 |
| 1 | 1 | 1 | 15µs | 19µs | Time::Local::_daygm |
| 1 | 1 | 1 | 12µs | 27µs | Time::Local::BEGIN@5 |
| 1 | 1 | 1 | 10µs | 14µs | Time::Local::BEGIN@6 |
| 1 | 1 | 1 | 8µs | 52µs | Time::Local::BEGIN@27 |
| 1 | 1 | 1 | 5µs | 29µs | Time::Local::BEGIN@29 |
| 1 | 1 | 1 | 5µs | 29µs | Time::Local::BEGIN@28 |
| 1 | 1 | 1 | 4µs | 4µs | 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 | 3 | 41µs | 2 | 131µs | # spent 73µs (16+58) within Time::Local::BEGIN@4 which was called:
# once (16µs+58µs) by DateTime::BEGIN@49 at line 4 # spent 73µs making 1 call to Time::Local::BEGIN@4
# spent 58µs making 1 call to Exporter::import |
| 5 | 3 | 23µs | 2 | 41µs | # spent 27µs (12+14) within Time::Local::BEGIN@5 which was called:
# once (12µs+14µs) by DateTime::BEGIN@49 at line 5 # spent 27µs making 1 call to Time::Local::BEGIN@5
# spent 14µs making 1 call to Config::import |
| 6 | 3 | 20µs | 2 | 19µs | # spent 14µs (10+5) within Time::Local::BEGIN@6 which was called:
# once (10µs+5µs) by DateTime::BEGIN@49 at line 6 # spent 14µs making 1 call to Time::Local::BEGIN@6
# spent 5µs making 1 call to strict::import |
| 7 | |||||
| 8 | 3 | 87µs | 2 | 135µs | # spent 76µs (16+60) within Time::Local::BEGIN@8 which was called:
# once (16µs+60µs) by DateTime::BEGIN@49 at line 8 # spent 76µs making 1 call to Time::Local::BEGIN@8
# spent 60µs making 1 call to vars::import |
| 9 | 1 | 400ns | $VERSION = '1.1901_01'; | ||
| 10 | |||||
| 11 | 1 | 8µs | @ISA = qw( Exporter ); | ||
| 12 | 1 | 700ns | @EXPORT = qw( timegm timelocal ); | ||
| 13 | 1 | 600ns | @EXPORT_OK = qw( timegm_nocheck timelocal_nocheck ); | ||
| 14 | |||||
| 15 | 1 | 1µs | my @MonthDays = ( 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ); | ||
| 16 | |||||
| 17 | # Determine breakpoint for rolling century | ||||
| 18 | 1 | 23µs | my $ThisYear = ( localtime() )[5]; | ||
| 19 | 1 | 2µs | my $Breakpoint = ( $ThisYear + 50 ) % 100; | ||
| 20 | 1 | 1µs | my $NextCentury = $ThisYear - $ThisYear % 100; | ||
| 21 | 1 | 200ns | $NextCentury += 100 if $Breakpoint < 50; | ||
| 22 | 1 | 200ns | my $Century = $NextCentury - 100; | ||
| 23 | 1 | 200ns | my $SecOff = 0; | ||
| 24 | |||||
| 25 | 1 | 400ns | my ( %Options, %Cheat ); | ||
| 26 | |||||
| 27 | 3 | 20µs | 2 | 95µs | # spent 52µs (8+44) within Time::Local::BEGIN@27 which was called:
# once (8µs+44µs) by DateTime::BEGIN@49 at line 27 # spent 52µs making 1 call to Time::Local::BEGIN@27
# spent 44µs making 1 call to constant::import |
| 28 | 3 | 20µs | 2 | 52µs | # spent 29µs (5+23) within Time::Local::BEGIN@28 which was called:
# once (5µs+23µs) by DateTime::BEGIN@49 at line 28 # spent 29µs making 1 call to Time::Local::BEGIN@28
# spent 23µs making 1 call to constant::import |
| 29 | 3 | 589µs | 2 | 52µs | # spent 29µs (5+23) within Time::Local::BEGIN@29 which was called:
# once (5µs+23µs) by DateTime::BEGIN@49 at line 29 # spent 29µs making 1 call to Time::Local::BEGIN@29
# spent 23µs making 1 call to constant::import |
| 30 | |||||
| 31 | # localtime()'s limit is the year 2**31 | ||||
| 32 | 1 | 100ns | my $MaxDay = 365 * (2**31); | ||
| 33 | |||||
| 34 | # Determine the EPOC day for this machine | ||||
| 35 | 1 | 100ns | my $Epoc = 0; | ||
| 36 | 1 | 2µs | if ( $^O eq 'vos' ) { | ||
| 37 | # work around posix-977 -- VOS doesn't handle dates in the range | ||||
| 38 | # 1970-1980. | ||||
| 39 | $Epoc = _daygm( 0, 0, 0, 1, 0, 70, 4, 0 ); | ||||
| 40 | } | ||||
| 41 | elsif ( $^O eq 'MacOS' ) { | ||||
| 42 | $MaxDay *=2 if $^O eq 'MacOS'; # time_t unsigned ... quick hack? | ||||
| 43 | # MacOS time() is seconds since 1 Jan 1904, localtime | ||||
| 44 | # so we need to calculate an offset to apply later | ||||
| 45 | $Epoc = 693901; | ||||
| 46 | $SecOff = timelocal( localtime(0)) - timelocal( gmtime(0) ) ; | ||||
| 47 | $Epoc += _daygm( gmtime(0) ); | ||||
| 48 | } | ||||
| 49 | else { | ||||
| 50 | 1 | 10µs | 1 | 19µs | $Epoc = _daygm( gmtime(0) ); # spent 19µs making 1 call to Time::Local::_daygm |
| 51 | } | ||||
| 52 | |||||
| 53 | 1 | 800ns | %Cheat = (); # clear the cache as epoc has changed | ||
| 54 | |||||
| 55 | # spent 19µs (15+4) within Time::Local::_daygm which was called:
# once (15µs+4µs) by DateTime::BEGIN@49 at line 50 | ||||
| 56 | |||||
| 57 | # This is written in such a byzantine way in order to avoid | ||||
| 58 | # lexical variables and sub calls, for speed | ||||
| 59 | return $_[3] + ( | ||||
| 60 | 4 | 21µs | 1 | 4µs | $Cheat{ pack( 'ss', @_[ 4, 5 ] ) } ||= do { # spent 4µs making 1 call to Time::Local::CORE:pack |
| 61 | my $month = ( $_[4] + 10 ) % 12; | ||||
| 62 | my $year = $_[5] + 1900 - int($month / 10); | ||||
| 63 | |||||
| 64 | ( ( 365 * $year ) | ||||
| 65 | + int( $year / 4 ) | ||||
| 66 | - int( $year / 100 ) | ||||
| 67 | + int( $year / 400 ) | ||||
| 68 | + int( ( ( $month * 306 ) + 5 ) / 10 ) | ||||
| 69 | ) | ||||
| 70 | - $Epoc; | ||||
| 71 | } | ||||
| 72 | ); | ||||
| 73 | } | ||||
| 74 | |||||
| 75 | sub _timegm { | ||||
| 76 | my $sec = | ||||
| 77 | $SecOff + $_[0] + ( SECS_PER_MINUTE * $_[1] ) + ( SECS_PER_HOUR * $_[2] ); | ||||
| 78 | |||||
| 79 | return $sec + ( SECS_PER_DAY * &_daygm ); | ||||
| 80 | } | ||||
| 81 | |||||
| 82 | sub timegm { | ||||
| 83 | my ( $sec, $min, $hour, $mday, $month, $year ) = @_; | ||||
| 84 | |||||
| 85 | if ( $year >= 1000 ) { | ||||
| 86 | $year -= 1900; | ||||
| 87 | } | ||||
| 88 | elsif ( $year < 100 and $year >= 0 ) { | ||||
| 89 | $year += ( $year > $Breakpoint ) ? $Century : $NextCentury; | ||||
| 90 | } | ||||
| 91 | |||||
| 92 | unless ( $Options{no_range_check} ) { | ||||
| 93 | croak "Month '$month' out of range 0..11" | ||||
| 94 | if $month > 11 | ||||
| 95 | or $month < 0; | ||||
| 96 | |||||
| 97 | my $md = $MonthDays[$month]; | ||||
| 98 | ++$md | ||||
| 99 | if $month == 1 && _is_leap_year( $year + 1900 ); | ||||
| 100 | |||||
| 101 | croak "Day '$mday' out of range 1..$md" if $mday > $md or $mday < 1; | ||||
| 102 | croak "Hour '$hour' out of range 0..23" if $hour > 23 or $hour < 0; | ||||
| 103 | croak "Minute '$min' out of range 0..59" if $min > 59 or $min < 0; | ||||
| 104 | croak "Second '$sec' out of range 0..59" if $sec > 59 or $sec < 0; | ||||
| 105 | } | ||||
| 106 | |||||
| 107 | my $days = _daygm( undef, undef, undef, $mday, $month, $year ); | ||||
| 108 | |||||
| 109 | unless ($Options{no_range_check} or abs($days) < $MaxDay) { | ||||
| 110 | my $msg = ''; | ||||
| 111 | $msg .= "Day too big - $days > $MaxDay\n" if $days > $MaxDay; | ||||
| 112 | |||||
| 113 | $year += 1900; | ||||
| 114 | $msg .= "Cannot handle date ($sec, $min, $hour, $mday, $month, $year)"; | ||||
| 115 | |||||
| 116 | croak $msg; | ||||
| 117 | } | ||||
| 118 | |||||
| 119 | return $sec | ||||
| 120 | + $SecOff | ||||
| 121 | + ( SECS_PER_MINUTE * $min ) | ||||
| 122 | + ( SECS_PER_HOUR * $hour ) | ||||
| 123 | + ( SECS_PER_DAY * $days ); | ||||
| 124 | } | ||||
| 125 | |||||
| 126 | sub _is_leap_year { | ||||
| 127 | return 0 if $_[0] % 4; | ||||
| 128 | return 1 if $_[0] % 100; | ||||
| 129 | return 0 if $_[0] % 400; | ||||
| 130 | |||||
| 131 | return 1; | ||||
| 132 | } | ||||
| 133 | |||||
| 134 | sub timegm_nocheck { | ||||
| 135 | local $Options{no_range_check} = 1; | ||||
| 136 | return &timegm; | ||||
| 137 | } | ||||
| 138 | |||||
| 139 | sub timelocal { | ||||
| 140 | my $ref_t = &timegm; | ||||
| 141 | my $loc_for_ref_t = _timegm( localtime($ref_t) ); | ||||
| 142 | |||||
| 143 | my $zone_off = $loc_for_ref_t - $ref_t | ||||
| 144 | or return $loc_for_ref_t; | ||||
| 145 | |||||
| 146 | # Adjust for timezone | ||||
| 147 | my $loc_t = $ref_t - $zone_off; | ||||
| 148 | |||||
| 149 | # Are we close to a DST change or are we done | ||||
| 150 | my $dst_off = $ref_t - _timegm( localtime($loc_t) ); | ||||
| 151 | |||||
| 152 | # If this evaluates to true, it means that the value in $loc_t is | ||||
| 153 | # the _second_ hour after a DST change where the local time moves | ||||
| 154 | # backward. | ||||
| 155 | if ( ! $dst_off && | ||||
| 156 | ( ( $ref_t - SECS_PER_HOUR ) - _timegm( localtime( $loc_t - SECS_PER_HOUR ) ) < 0 ) | ||||
| 157 | ) { | ||||
| 158 | return $loc_t - SECS_PER_HOUR; | ||||
| 159 | } | ||||
| 160 | |||||
| 161 | # Adjust for DST change | ||||
| 162 | $loc_t += $dst_off; | ||||
| 163 | |||||
| 164 | return $loc_t if $dst_off > 0; | ||||
| 165 | |||||
| 166 | # If the original date was a non-extent gap in a forward DST jump, | ||||
| 167 | # we should now have the wrong answer - undo the DST adjustment | ||||
| 168 | my ( $s, $m, $h ) = localtime($loc_t); | ||||
| 169 | $loc_t -= $dst_off if $s != $_[0] || $m != $_[1] || $h != $_[2]; | ||||
| 170 | |||||
| 171 | return $loc_t; | ||||
| 172 | } | ||||
| 173 | |||||
| 174 | sub timelocal_nocheck { | ||||
| 175 | local $Options{no_range_check} = 1; | ||||
| 176 | return &timelocal; | ||||
| 177 | } | ||||
| 178 | |||||
| 179 | 1 | 14µs | 1; | ||
| 180 | |||||
| 181 | __END__ | ||||
# spent 4µs within Time::Local::CORE:pack which was called:
# once (4µs+0s) by Time::Local::_daygm at line 60 |