KevinSchoenmayer/GseTDDUebungKCLR
2
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Initial Commit

Browse Source
This commit is contained in:
Riley Schneider
2025-12-03 16:38:10 +01:00
parent c5e26bf594
commit b732d8d4b5
17680 changed files with 5977495 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

681
database/perl/lib/Time/HiRes.pm Normal file
View File

@@ -0,0 +1,681 @@
package Time::HiRes;
{ use 5.006; }
use strict;
require Exporter;
use XSLoader ();
our @ISA = qw(Exporter);
our @EXPORT = qw( );
# More or less this same list is in Makefile.PL. Should unify.
our @EXPORT_OK = qw (usleep sleep ualarm alarm gettimeofday time tv_interval
getitimer setitimer nanosleep clock_gettime clock_getres
clock clock_nanosleep
CLOCKS_PER_SEC
CLOCK_BOOTTIME
CLOCK_HIGHRES
CLOCK_MONOTONIC
CLOCK_MONOTONIC_COARSE
CLOCK_MONOTONIC_FAST
CLOCK_MONOTONIC_PRECISE
CLOCK_MONOTONIC_RAW
CLOCK_PROCESS_CPUTIME_ID
CLOCK_PROF
CLOCK_REALTIME
CLOCK_REALTIME_COARSE
CLOCK_REALTIME_FAST
CLOCK_REALTIME_PRECISE
CLOCK_REALTIME_RAW
CLOCK_SECOND
CLOCK_SOFTTIME
CLOCK_THREAD_CPUTIME_ID
CLOCK_TIMEOFDAY
CLOCK_UPTIME
CLOCK_UPTIME_COARSE
CLOCK_UPTIME_FAST
CLOCK_UPTIME_PRECISE
CLOCK_UPTIME_RAW
CLOCK_VIRTUAL
ITIMER_PROF
ITIMER_REAL
ITIMER_REALPROF
ITIMER_VIRTUAL
TIMER_ABSTIME
d_usleep d_ualarm d_gettimeofday d_getitimer d_setitimer
d_nanosleep d_clock_gettime d_clock_getres
d_clock d_clock_nanosleep d_hires_stat
d_futimens d_utimensat d_hires_utime
stat lstat utime
);
our $VERSION = '1.9764';
our $XS_VERSION = $VERSION;
$VERSION = eval $VERSION;
our $AUTOLOAD;
sub AUTOLOAD {
my $constname;
($constname = $AUTOLOAD) =~ s/.*:://;
# print "AUTOLOAD: constname = $constname ($AUTOLOAD)\n";
die "&Time::HiRes::constant not defined" if $constname eq 'constant';
my ($error, $val) = constant($constname);
# print "AUTOLOAD: error = $error, val = $val\n";
if ($error) {
my (undef,$file,$line) = caller;
die "$error at $file line $line.\n";
}
{
no strict 'refs';
*$AUTOLOAD = sub { $val };
}
goto &$AUTOLOAD;
}
sub import {
my $this = shift;
for my $i (@_) {
if (($i eq 'clock_getres' && !&d_clock_getres) ||
($i eq 'clock_gettime' && !&d_clock_gettime) ||
($i eq 'clock_nanosleep' && !&d_clock_nanosleep) ||
($i eq 'clock' && !&d_clock) ||
($i eq 'nanosleep' && !&d_nanosleep) ||
($i eq 'usleep' && !&d_usleep) ||
($i eq 'utime' && !&d_hires_utime) ||
($i eq 'ualarm' && !&d_ualarm)) {
require Carp;
Carp::croak("Time::HiRes::$i(): unimplemented in this platform");
}
}
Time::HiRes->export_to_level(1, $this, @_);
}
XSLoader::load( 'Time::HiRes', $XS_VERSION );
# Preloaded methods go here.
sub tv_interval {
# probably could have been done in C
my ($a, $b) = @_;
$b = [gettimeofday()] unless defined($b);
(${$b}[0] - ${$a}[0]) + ((${$b}[1] - ${$a}[1]) / 1_000_000);
}
# Autoload methods go after =cut, and are processed by the autosplit program.
1;
__END__
=head1 NAME
Time::HiRes - High resolution alarm, sleep, gettimeofday, interval timers
=head1 SYNOPSIS
use Time::HiRes qw( usleep ualarm gettimeofday tv_interval nanosleep
clock_gettime clock_getres clock_nanosleep clock
stat lstat utime);
usleep ($microseconds);
nanosleep ($nanoseconds);
ualarm ($microseconds);
ualarm ($microseconds, $interval_microseconds);
$t0 = [gettimeofday];
($seconds, $microseconds) = gettimeofday;
$elapsed = tv_interval ( $t0, [$seconds, $microseconds]);
$elapsed = tv_interval ( $t0, [gettimeofday]);
$elapsed = tv_interval ( $t0 );
use Time::HiRes qw ( time alarm sleep );
$now_fractions = time;
sleep ($floating_seconds);
alarm ($floating_seconds);
alarm ($floating_seconds, $floating_interval);
use Time::HiRes qw( setitimer getitimer );
setitimer ($which, $floating_seconds, $floating_interval );
getitimer ($which);
use Time::HiRes qw( clock_gettime clock_getres clock_nanosleep
ITIMER_REAL ITIMER_VIRTUAL ITIMER_PROF
ITIMER_REALPROF );
$realtime = clock_gettime(CLOCK_REALTIME);
$resolution = clock_getres(CLOCK_REALTIME);
clock_nanosleep(CLOCK_REALTIME, 1.5e9);
clock_nanosleep(CLOCK_REALTIME, time()*1e9 + 10e9, TIMER_ABSTIME);
my $ticktock = clock();
use Time::HiRes qw( stat lstat );
my @stat = stat("file");
my @stat = stat(FH);
my @stat = lstat("file");
use Time::HiRes qw( utime );
utime $floating_seconds, $floating_seconds, file...;
=head1 DESCRIPTION
The C<Time::HiRes> module implements a Perl interface to the
C<usleep>, C<nanosleep>, C<ualarm>, C<gettimeofday>, and
C<setitimer>/C<getitimer> system calls, in other words, high
resolution time and timers. See the L</EXAMPLES> section below and the
test scripts for usage; see your system documentation for the
description of the underlying C<nanosleep> or C<usleep>, C<ualarm>,
C<gettimeofday>, and C<setitimer>/C<getitimer> calls.
If your system lacks C<gettimeofday()> or an emulation of it you don't
get C<gettimeofday()> or the one-argument form of C<tv_interval()>.
If your system lacks all of C<nanosleep()>, C<usleep()>,
C<select()>, and C<poll>, you don't get C<Time::HiRes::usleep()>,
C<Time::HiRes::nanosleep()>, or C<Time::HiRes::sleep()>.
If your system lacks both C<ualarm()> and C<setitimer()> you don't get
C<Time::HiRes::ualarm()> or C<Time::HiRes::alarm()>.
If you try to import an unimplemented function in the C<use> statement
it will fail at compile time.
If your subsecond sleeping is implemented with C<nanosleep()> instead
of C<usleep()>, you can mix subsecond sleeping with signals since
C<nanosleep()> does not use signals. This, however, is not portable,
and you should first check for the truth value of
C<&Time::HiRes::d_nanosleep> to see whether you have nanosleep, and
then carefully read your C<nanosleep()> C API documentation for any
peculiarities.
If you are using C<nanosleep> for something else than mixing sleeping
with signals, give some thought to whether Perl is the tool you should
be using for work requiring nanosecond accuracies.
Remember that unless you are working on a I<hard realtime> system,
any clocks and timers will be imprecise, especially so if you are working
in a pre-emptive multiuser system. Understand the difference between
I<wallclock time> and process time (in UNIX-like systems the sum of
I<user> and I<system> times). Any attempt to sleep for X seconds will
most probably end up sleeping B<more> than that, but don't be surprised
if you end up sleeping slightly B<less>.
The following functions can be imported from this module.
No functions are exported by default.
=over 4
=item gettimeofday ()
In array context returns a two-element array with the seconds and
microseconds since the epoch. In scalar context returns floating
seconds like C<Time::HiRes::time()> (see below).
=item usleep ( $useconds )
Sleeps for the number of microseconds (millionths of a second)
specified. Returns the number of microseconds actually slept.
Can sleep for more than one second, unlike the C<usleep> system call.
Can also sleep for zero seconds, which often works like a I<thread yield>.
See also L<C<Time::HiRes::sleep()>|/sleep ( $floating_seconds )>, and
L<C<clock_nanosleep()>|/clock_nanosleep ( $which, $nanoseconds, $flags = 0)>.
Do not expect usleep() to be exact down to one microsecond.
=item nanosleep ( $nanoseconds )
Sleeps for the number of nanoseconds (1e9ths of a second) specified.
Returns the number of nanoseconds actually slept (accurate only to
microseconds, the nearest thousand of them). Can sleep for more than
one second. Can also sleep for zero seconds, which often works like
a I<thread yield>. See also
L<C<Time::HiRes::sleep()>|/sleep ( $floating_seconds )>,
L<C<Time::HiRes::usleep()>|/usleep ( $useconds )>, and
L<C<clock_nanosleep()>|/clock_nanosleep ( $which, $nanoseconds, $flags = 0)>.
Do not expect nanosleep() to be exact down to one nanosecond.
Getting even accuracy of one thousand nanoseconds is good.
=item ualarm ( $useconds [, $interval_useconds ] )
Issues a C<ualarm> call; the C<$interval_useconds> is optional and
will be zero if unspecified, resulting in C<alarm>-like behaviour.
Returns the remaining time in the alarm in microseconds, or C<undef>
if an error occurred.
ualarm(0) will cancel an outstanding ualarm().
Note that the interaction between alarms and sleeps is unspecified.
=item tv_interval
tv_interval ( $ref_to_gettimeofday [, $ref_to_later_gettimeofday] )
Returns the floating seconds between the two times, which should have
been returned by C<gettimeofday()>. If the second argument is omitted,
then the current time is used.
=item time ()
Returns a floating seconds since the epoch. This function can be
imported, resulting in a nice drop-in replacement for the C<time>
provided with core Perl; see the L</EXAMPLES> below.
B<NOTE 1>: This higher resolution timer can return values either less
or more than the core C<time()>, depending on whether your platform
rounds the higher resolution timer values up, down, or to the nearest second
to get the core C<time()>, but naturally the difference should be never
more than half a second. See also L</clock_getres>, if available
in your system.
B<NOTE 2>: Since Sunday, September 9th, 2001 at 01:46:40 AM GMT, when
the C<time()> seconds since epoch rolled over to 1_000_000_000, the
default floating point format of Perl and the seconds since epoch have
conspired to produce an apparent bug: if you print the value of
C<Time::HiRes::time()> you seem to be getting only five decimals, not
six as promised (microseconds). Not to worry, the microseconds are
there (assuming your platform supports such granularity in the first
place). What is going on is that the default floating point format of
Perl only outputs 15 digits. In this case that means ten digits
before the decimal separator and five after. To see the microseconds
you can use either C<printf>/C<sprintf> with C<"%.6f">, or the
C<gettimeofday()> function in list context, which will give you the
seconds and microseconds as two separate values.
=item sleep ( $floating_seconds )
Sleeps for the specified amount of seconds. Returns the number of
seconds actually slept (a floating point value). This function can
be imported, resulting in a nice drop-in replacement for the C<sleep>
provided with perl, see the L</EXAMPLES> below.
Note that the interaction between alarms and sleeps is unspecified.
=item alarm ( $floating_seconds [, $interval_floating_seconds ] )
The C<SIGALRM> signal is sent after the specified number of seconds.
Implemented using C<setitimer()> if available, C<ualarm()> if not.
The C<$interval_floating_seconds> argument is optional and will be
zero if unspecified, resulting in C<alarm()>-like behaviour. This
function can be imported, resulting in a nice drop-in replacement for
the C<alarm> provided with perl, see the L</EXAMPLES> below.
Returns the remaining time in the alarm in seconds, or C<undef>
if an error occurred.
B<NOTE 1>: With some combinations of operating systems and Perl
releases C<SIGALRM> restarts C<select()>, instead of interrupting it.
This means that an C<alarm()> followed by a C<select()> may together
take the sum of the times specified for the C<alarm()> and the
C<select()>, not just the time of the C<alarm()>.
Note that the interaction between alarms and sleeps is unspecified.
=item setitimer ( $which, $floating_seconds [, $interval_floating_seconds ] )
Start up an interval timer: after a certain time, a signal ($which) arrives,
and more signals may keep arriving at certain intervals. To disable
an "itimer", use C<$floating_seconds> of zero. If the
C<$interval_floating_seconds> is set to zero (or unspecified), the
timer is disabled B<after> the next delivered signal.
Use of interval timers may interfere with C<alarm()>, C<sleep()>,
and C<usleep()>. In standard-speak the "interaction is unspecified",
which means that I<anything> may happen: it may work, it may not.
In scalar context, the remaining time in the timer is returned.
In list context, both the remaining time and the interval are returned.
There are usually three or four interval timers (signals) available: the
C<$which> can be C<ITIMER_REAL>, C<ITIMER_VIRTUAL>, C<ITIMER_PROF>, or
C<ITIMER_REALPROF>. Note that which ones are available depends: true
UNIX platforms usually have the first three, but only Solaris seems to
have C<ITIMER_REALPROF> (which is used to profile multithreaded programs).
Win32 unfortunately does not have interval timers.
C<ITIMER_REAL> results in C<alarm()>-like behaviour. Time is counted in
I<real time>; that is, wallclock time. C<SIGALRM> is delivered when
the timer expires.
C<ITIMER_VIRTUAL> counts time in (process) I<virtual time>; that is,
only when the process is running. In multiprocessor/user/CPU systems
this may be more or less than real or wallclock time. (This time is
also known as the I<user time>.) C<SIGVTALRM> is delivered when the
timer expires.
C<ITIMER_PROF> counts time when either the process virtual time or when
the operating system is running on behalf of the process (such as I/O).
(This time is also known as the I<system time>.) (The sum of user
time and system time is known as the I<CPU time>.) C<SIGPROF> is
delivered when the timer expires. C<SIGPROF> can interrupt system calls.
The semantics of interval timers for multithreaded programs are
system-specific, and some systems may support additional interval
timers. For example, it is unspecified which thread gets the signals.
See your L<C<setitimer(2)>> documentation.
=item getitimer ( $which )
Return the remaining time in the interval timer specified by C<$which>.
In scalar context, the remaining time is returned.
In list context, both the remaining time and the interval are returned.
The interval is always what you put in using C<setitimer()>.
=item clock_gettime ( $which )
Return as seconds the current value of the POSIX high resolution timer
specified by C<$which>. All implementations that support POSIX high
resolution timers are supposed to support at least the C<$which> value
of C<CLOCK_REALTIME>, which is supposed to return results close to the
results of C<gettimeofday>, or the number of seconds since 00:00:00:00
January 1, 1970 Greenwich Mean Time (GMT). Do not assume that
CLOCK_REALTIME is zero, it might be one, or something else.
Another potentially useful (but not available everywhere) value is
C<CLOCK_MONOTONIC>, which guarantees a monotonically increasing time
value (unlike time() or gettimeofday(), which can be adjusted).
See your system documentation for other possibly supported values.
=item clock_getres ( $which )
Return as seconds the resolution of the POSIX high resolution timer
specified by C<$which>. All implementations that support POSIX high
resolution timers are supposed to support at least the C<$which> value
of C<CLOCK_REALTIME>, see L</clock_gettime>.
B<NOTE>: the resolution returned may be highly optimistic. Even if
the resolution is high (a small number), all it means is that you'll
be able to specify the arguments to clock_gettime() and clock_nanosleep()
with that resolution. The system might not actually be able to measure
events at that resolution, and the various overheads and the overall system
load are certain to affect any timings.
=item clock_nanosleep ( $which, $nanoseconds, $flags = 0)
Sleeps for the number of nanoseconds (1e9ths of a second) specified.
Returns the number of nanoseconds actually slept. The $which is the
"clock id", as with clock_gettime() and clock_getres(). The flags
default to zero but C<TIMER_ABSTIME> can specified (must be exported
explicitly) which means that C<$nanoseconds> is not a time interval
(as is the default) but instead an absolute time. Can sleep for more
than one second. Can also sleep for zero seconds, which often works
like a I<thread yield>. See also
L<C<Time::HiRes::sleep()>|/sleep ( $floating_seconds )>,
L<C<Time::HiRes::usleep()>|/usleep ( $useconds )>, and
L<C<Time::HiRes::nanosleep()>|/nanosleep ( $nanoseconds )>.
Do not expect clock_nanosleep() to be exact down to one nanosecond.
Getting even accuracy of one thousand nanoseconds is good.
=item clock()
Return as seconds the I<process time> (user + system time) spent by
the process since the first call to clock() (the definition is B<not>
"since the start of the process", though if you are lucky these times
may be quite close to each other, depending on the system). What this
means is that you probably need to store the result of your first call
to clock(), and subtract that value from the following results of clock().
The time returned also includes the process times of the terminated
child processes for which wait() has been executed. This value is
somewhat like the second value returned by the times() of core Perl,
but not necessarily identical. Note that due to backward
compatibility limitations the returned value may wrap around at about
2147 seconds or at about 36 minutes.
=item stat
=item stat FH
=item stat EXPR
=item lstat
=item lstat FH
=item lstat EXPR
As L<perlfunc/stat> or L<perlfunc/lstat>
but with the access/modify/change file timestamps
in subsecond resolution, if the operating system and the filesystem
both support such timestamps. To override the standard stat():
use Time::HiRes qw(stat);
Test for the value of &Time::HiRes::d_hires_stat to find out whether
the operating system supports subsecond file timestamps: a value
larger than zero means yes. There are unfortunately no easy
ways to find out whether the filesystem supports such timestamps.
UNIX filesystems often do; NTFS does; FAT doesn't (FAT timestamp
granularity is B<two> seconds).
A zero return value of &Time::HiRes::d_hires_stat means that
Time::HiRes::stat is a no-op passthrough for CORE::stat()
(and likewise for lstat),
and therefore the timestamps will stay integers. The same
thing will happen if the filesystem does not do subsecond timestamps,
even if the &Time::HiRes::d_hires_stat is non-zero.
In any case do not expect nanosecond resolution, or even a microsecond
resolution. Also note that the modify/access timestamps might have
different resolutions, and that they need not be synchronized, e.g.
if the operations are
write
stat # t1
read
stat # t2
the access time stamp from t2 need not be greater-than the modify
time stamp from t1: it may be equal or I<less>.
=item utime LIST
As L<perlfunc/utime>
but with the ability to set the access/modify file timestamps
in subsecond resolution, if the operating system and the filesystem,
and the mount options of the filesystem, all support such timestamps.
To override the standard utime():
use Time::HiRes qw(utime);
Test for the value of &Time::HiRes::d_hires_utime to find out whether
the operating system supports setting subsecond file timestamps.
As with CORE::utime(), passing undef as both the atime and mtime will
call the syscall with a NULL argument.
The actual achievable subsecond resolution depends on the combination
of the operating system and the filesystem.
Modifying the timestamps may not be possible at all: for example, the
C<noatime> filesystem mount option may prohibit you from changing the
access time timestamp.
Returns the number of files successfully changed.
=back
=head1 EXAMPLES
use Time::HiRes qw(usleep ualarm gettimeofday tv_interval);
$microseconds = 750_000;
usleep($microseconds);
# signal alarm in 2.5s & every .1s thereafter
ualarm(2_500_000, 100_000);
# cancel that ualarm
ualarm(0);
# get seconds and microseconds since the epoch
($s, $usec) = gettimeofday();
# measure elapsed time
# (could also do by subtracting 2 gettimeofday return values)
$t0 = [gettimeofday];
# do bunch of stuff here
$t1 = [gettimeofday];
# do more stuff here
$t0_t1 = tv_interval $t0, $t1;
$elapsed = tv_interval ($t0, [gettimeofday]);
$elapsed = tv_interval ($t0); # equivalent code
#
# replacements for time, alarm and sleep that know about
# floating seconds
#
use Time::HiRes;
$now_fractions = Time::HiRes::time;
Time::HiRes::sleep (2.5);
Time::HiRes::alarm (10.6666666);
use Time::HiRes qw ( time alarm sleep );
$now_fractions = time;
sleep (2.5);
alarm (10.6666666);
# Arm an interval timer to go off first at 10 seconds and
# after that every 2.5 seconds, in process virtual time
use Time::HiRes qw ( setitimer ITIMER_VIRTUAL time );
$SIG{VTALRM} = sub { print time, "\n" };
setitimer(ITIMER_VIRTUAL, 10, 2.5);
use Time::HiRes qw( clock_gettime clock_getres CLOCK_REALTIME );
# Read the POSIX high resolution timer.
my $high = clock_gettime(CLOCK_REALTIME);
# But how accurate we can be, really?
my $reso = clock_getres(CLOCK_REALTIME);
use Time::HiRes qw( clock_nanosleep TIMER_ABSTIME );
clock_nanosleep(CLOCK_REALTIME, 1e6);
clock_nanosleep(CLOCK_REALTIME, 2e9, TIMER_ABSTIME);
use Time::HiRes qw( clock );
my $clock0 = clock();
... # Do something.
my $clock1 = clock();
my $clockd = $clock1 - $clock0;
use Time::HiRes qw( stat );
my ($atime, $mtime, $ctime) = (stat("istics"))[8, 9, 10];
=head1 C API
In addition to the perl API described above, a C API is available for
extension writers. The following C functions are available in the
modglobal hash:
name C prototype
--------------- ----------------------
Time::NVtime NV (*)()
Time::U2time void (*)(pTHX_ UV ret[2])
Both functions return equivalent information (like C<gettimeofday>)
but with different representations. The names C<NVtime> and C<U2time>
were selected mainly because they are operating system independent.
(C<gettimeofday> is Unix-centric, though some platforms like Win32 and
VMS have emulations for it.)
Here is an example of using C<NVtime> from C:
NV (*myNVtime)(); /* Returns -1 on failure. */
SV **svp = hv_fetchs(PL_modglobal, "Time::NVtime", 0);
if (!svp) croak("Time::HiRes is required");
if (!SvIOK(*svp)) croak("Time::NVtime isn't a function pointer");
myNVtime = INT2PTR(NV(*)(), SvIV(*svp));
printf("The current time is: %" NVff "\n", (*myNVtime)());
=head1 DIAGNOSTICS
=head2 useconds or interval more than ...
In ualarm() you tried to use number of microseconds or interval (also
in microseconds) more than 1_000_000 and setitimer() is not available
in your system to emulate that case.
=head2 negative time not invented yet
You tried to use a negative time argument.
=head2 internal error: useconds < 0 (unsigned ... signed ...)
Something went horribly wrong-- the number of microseconds that cannot
become negative just became negative. Maybe your compiler is broken?
=head2 useconds or uinterval equal to or more than 1000000
In some platforms it is not possible to get an alarm with subsecond
resolution and later than one second.
=head2 unimplemented in this platform
Some calls simply aren't available, real or emulated, on every platform.
=head1 CAVEATS
Notice that the core C<time()> maybe rounding rather than truncating.
What this means is that the core C<time()> may be reporting the time
as one second later than C<gettimeofday()> and C<Time::HiRes::time()>.
Adjusting the system clock (either manually or by services like ntp)
may cause problems, especially for long running programs that assume
a monotonously increasing time (note that all platforms do not adjust
time as gracefully as UNIX ntp does). For example in Win32 (and derived
platforms like Cygwin and MinGW) the Time::HiRes::time() may temporarily
drift off from the system clock (and the original time()) by up to 0.5
seconds. Time::HiRes will notice this eventually and recalibrate.
Note that since Time::HiRes 1.77 the clock_gettime(CLOCK_MONOTONIC)
might help in this (in case your system supports CLOCK_MONOTONIC).
Some systems have APIs but not implementations: for example QNX and Haiku
have the interval timer APIs but not the functionality.
In pre-Sierra macOS (pre-10.12, OS X) clock_getres(), clock_gettime()
and clock_nanosleep() are emulated using the Mach timers; as a side
effect of being emulated the CLOCK_REALTIME and CLOCK_MONOTONIC are
the same timer.
gnukfreebsd seems to have non-functional futimens() and utimensat()
(at least as of 10.1): therefore the hires utime() does not work.
=head1 SEE ALSO
Perl modules L<BSD::Resource>, L<Time::TAI64>.
Your system documentation for L<C<clock(3)>>, L<C<clock_gettime(2)>>,
L<C<clock_getres(3)>>, L<C<clock_nanosleep(3)>>, L<C<clock_settime(2)>>,
L<C<getitimer(2)>>, L<C<gettimeofday(2)>>, L<C<setitimer(2)>>, L<C<sleep(3)>>,
L<C<stat(2)>>, L<C<ualarm(3)>>.
=head1 AUTHORS
D. Wegscheid <wegscd@whirlpool.com>
R. Schertler <roderick@argon.org>
J. Hietaniemi <jhi@iki.fi>
G. Aas <gisle@aas.no>
=head1 COPYRIGHT AND LICENSE
Copyright (c) 1996-2002 Douglas E. Wegscheid. All rights reserved.
Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Jarkko Hietaniemi.
All rights reserved.
Copyright (C) 2011, 2012, 2013 Andrew Main (Zefram) <zefram@fysh.org>
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut

515
database/perl/lib/Time/Local.pm Normal file
View File

@@ -0,0 +1,515 @@
package Time::Local;
use strict;
use Carp ();
use Exporter;
our $VERSION = '1.30';
use parent 'Exporter';
our @EXPORT = qw( timegm timelocal );
our @EXPORT_OK = qw(
timegm_modern
timelocal_modern
timegm_nocheck
timelocal_nocheck
timegm_posix
timelocal_posix
);
my @MonthDays = ( 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 );
# Determine breakpoint for rolling century
my $ThisYear = ( localtime() )[5];
my $Breakpoint = ( $ThisYear + 50 ) % 100;
my $NextCentury = $ThisYear - $ThisYear % 100;
$NextCentury += 100 if $Breakpoint < 50;
my $Century = $NextCentury - 100;
my $SecOff = 0;
my ( %Options, %Cheat );
use constant SECS_PER_MINUTE => 60;
use constant SECS_PER_HOUR => 3600;
use constant SECS_PER_DAY => 86400;
my $MaxDay;
if ( $] < 5.012000 ) {
require Config;
## no critic (Variables::ProhibitPackageVars)
my $MaxInt;
if ( $^O eq 'MacOS' ) {
# time_t is unsigned...
$MaxInt = ( 1 << ( 8 * $Config::Config{ivsize} ) )
- 1; ## no critic qw(ProhibitPackageVars)
}
else {
$MaxInt
= ( ( 1 << ( 8 * $Config::Config{ivsize} - 2 ) ) - 1 ) * 2
+ 1; ## no critic qw(ProhibitPackageVars)
}
$MaxDay = int( ( $MaxInt - ( SECS_PER_DAY / 2 ) ) / SECS_PER_DAY ) - 1;
}
else {
# recent localtime()'s limit is the year 2**31
$MaxDay = 365 * ( 2**31 );
}
# Determine the EPOC day for this machine
my $Epoc = 0;
if ( $^O eq 'vos' ) {
# work around posix-977 -- VOS doesn't handle dates in the range
# 1970-1980.
$Epoc = _daygm( 0, 0, 0, 1, 0, 70, 4, 0 );
}
elsif ( $^O eq 'MacOS' ) {
$MaxDay *= 2; # time_t unsigned ... quick hack?
# MacOS time() is seconds since 1 Jan 1904, localtime
# so we need to calculate an offset to apply later
$Epoc = 693901;
$SecOff = timelocal( localtime(0) ) - timelocal( gmtime(0) );
$Epoc += _daygm( gmtime(0) );
}
else {
$Epoc = _daygm( gmtime(0) );
}
%Cheat = (); # clear the cache as epoc has changed
sub _daygm {
# This is written in such a byzantine way in order to avoid
# lexical variables and sub calls, for speed
return $_[3] + (
$Cheat{ pack( 'ss', @_[ 4, 5 ] ) } ||= do {
my $month = ( $_[4] + 10 ) % 12;
my $year = $_[5] + 1900 - int( $month / 10 );
( ( 365 * $year )
+ int( $year / 4 )
- int( $year / 100 )
+ int( $year / 400 )
+ int( ( ( $month * 306 ) + 5 ) / 10 ) ) - $Epoc;
}
);
}
sub _timegm {
my $sec
= $SecOff + $_[0]
+ ( SECS_PER_MINUTE * $_[1] )
+ ( SECS_PER_HOUR * $_[2] );
return $sec + ( SECS_PER_DAY * &_daygm );
}
sub timegm {
my ( $sec, $min, $hour, $mday, $month, $year ) = @_;
if ( $Options{no_year_munging} ) {
$year -= 1900;
}
elsif ( !$Options{posix_year} ) {
if ( $year >= 1000 ) {
$year -= 1900;
}
elsif ( $year < 100 and $year >= 0 ) {
$year += ( $year > $Breakpoint ) ? $Century : $NextCentury;
}
}
unless ( $Options{no_range_check} ) {
Carp::croak("Month '$month' out of range 0..11")
if $month > 11
or $month < 0;
my $md = $MonthDays[$month];
++$md
if $month == 1 && _is_leap_year( $year + 1900 );
Carp::croak("Day '$mday' out of range 1..$md")
if $mday > $md or $mday < 1;
Carp::croak("Hour '$hour' out of range 0..23")
if $hour > 23 or $hour < 0;
Carp::croak("Minute '$min' out of range 0..59")
if $min > 59 or $min < 0;
Carp::croak("Second '$sec' out of range 0..59")
if $sec >= 60 or $sec < 0;
}
my $days = _daygm( undef, undef, undef, $mday, $month, $year );
unless ( $Options{no_range_check} or abs($days) < $MaxDay ) {
my $msg = q{};
$msg .= "Day too big - $days > $MaxDay\n" if $days > $MaxDay;
$year += 1900;
$msg
.= "Cannot handle date ($sec, $min, $hour, $mday, $month, $year)";
Carp::croak($msg);
}
return
$sec + $SecOff
+ ( SECS_PER_MINUTE * $min )
+ ( SECS_PER_HOUR * $hour )
+ ( SECS_PER_DAY * $days );
}
sub _is_leap_year {
return 0 if $_[0] % 4;
return 1 if $_[0] % 100;
return 0 if $_[0] % 400;
return 1;
}
sub timegm_nocheck {
local $Options{no_range_check} = 1;
return &timegm;
}
sub timegm_modern {
local $Options{no_year_munging} = 1;
return &timegm;
}
sub timegm_posix {
local $Options{posix_year} = 1;
return &timegm;
}
sub timelocal {
my $ref_t = &timegm;
my $loc_for_ref_t = _timegm( localtime($ref_t) );
my $zone_off = $loc_for_ref_t - $ref_t
or return $loc_for_ref_t;
# Adjust for timezone
my $loc_t = $ref_t - $zone_off;
# Are we close to a DST change or are we done
my $dst_off = $ref_t - _timegm( localtime($loc_t) );
# If this evaluates to true, it means that the value in $loc_t is
# the _second_ hour after a DST change where the local time moves
# backward.
if (
!$dst_off
&& ( ( $ref_t - SECS_PER_HOUR )
- _timegm( localtime( $loc_t - SECS_PER_HOUR ) ) < 0 )
) {
return $loc_t - SECS_PER_HOUR;
}
# Adjust for DST change
$loc_t += $dst_off;
return $loc_t if $dst_off > 0;
# If the original date was a non-existent gap in a forward DST jump, we
# should now have the wrong answer - undo the DST adjustment
my ( $s, $m, $h ) = localtime($loc_t);
$loc_t -= $dst_off if $s != $_[0] || $m != $_[1] || $h != $_[2];
return $loc_t;
}
sub timelocal_nocheck {
local $Options{no_range_check} = 1;
return &timelocal;
}
sub timelocal_modern {
local $Options{no_year_munging} = 1;
return &timelocal;
}
sub timelocal_posix {
local $Options{posix_year} = 1;
return &timelocal;
}
1;
# ABSTRACT: Efficiently compute time from local and GMT time
__END__
=pod
=encoding UTF-8
=head1 NAME
Time::Local - Efficiently compute time from local and GMT time
=head1 VERSION
version 1.30
=head1 SYNOPSIS
use Time::Local qw( timelocal_posix timegm_posix );
my $time = timelocal_posix( $sec, $min, $hour, $mday, $mon, $year );
my $time = timegm_posix( $sec, $min, $hour, $mday, $mon, $year );
=head1 DESCRIPTION
This module provides functions that are the inverse of built-in perl functions
C<localtime()> and C<gmtime()>. They accept a date as a six-element array, and
return the corresponding C<time(2)> value in seconds since the system epoch
(Midnight, January 1, 1970 GMT on Unix, for example). This value can be
positive or negative, though POSIX only requires support for positive values,
so dates before the system's epoch may not work on all operating systems.
It is worth drawing particular attention to the expected ranges for the values
provided. The value for the day of the month is the actual day (i.e. 1..31),
while the month is the number of months since January (0..11). This is
consistent with the values returned from C<localtime()> and C<gmtime()>.
=head1 FUNCTIONS
=head2 C<timelocal_posix()> and C<timegm_posix()>
These functions are the exact inverse of Perl's built-in C<localtime> and
C<gmtime> functions. That means that calling C<< timelocal_posix(
localtime($value) ) >> will always give you the same C<$value> you started
with. The same applies to C<< timegm_posix( gmtime($value) ) >>.
The one exception is when the value returned from C<localtime()> represents an
ambiguous local time because of a DST change. See the documentation below for
more details.
These functions expect the year value to be the number of years since 1900,
which is what the C<localtime()> and C<gmtime()> built-ins returns.
They perform range checking by default on the input C<$sec>, C<$min>,
C<$hour>, C<$mday>, and C<$mon> values and will croak (using C<Carp::croak()>)
if given a value outside the allowed ranges.
While it would be nice to make this the default behavior, that would almost
certainly break a lot of code, so you must explicitly import these functions
and use them instead of the default C<timelocal()> and C<timegm()>.
You are B<strongly> encouraged to use these functions in any new code which
uses this module. It will almost certainly make your code's behavior less
surprising.
=head2 C<timelocal_modern()> and C<timegm_modern()>
When C<Time::Local> was first written, it was a common practice to represent
years as a two-digit value like C<99> for C<1999> or C<1> for C<2001>. This
caused all sorts of problems (google "Y2K problem" if you're very young) and
developers eventually realized that this was a terrible idea.
The default exports of C<timelocal()> and C<timegm()> do a complicated
calculation when given a year value less than 1000. This leads to surprising
results in many cases. See L</Year Value Interpretation> for details.
The C<time*_modern()> functions do not do this year munging and simply take
the year value as provided.
They perform range checking by default on the input C<$sec>, C<$min>,
C<$hour>, C<$mday>, and C<$mon> values and will croak (using C<Carp::croak()>)
if given a value outside the allowed ranges.
=head2 C<timelocal()> and C<timegm()>
This module exports two functions by default, C<timelocal()> and C<timegm()>.
They perform range checking by default on the input C<$sec>, C<$min>,
C<$hour>, C<$mday>, and C<$mon> values and will croak (using C<Carp::croak()>)
if given a value outside the allowed ranges.
B<Warning: The year value interpretation that these functions and their
nocheck variants use will almost certainly lead to bugs in your code, if not
now, then in the future. You are strongly discouraged from using these in new
code, and you should convert old code to using either the C<*_posix> or
C<*_modern> functions if possible.>
=head2 C<timelocal_nocheck()> and C<timegm_nocheck()>
If you are working with data you know to be valid, you can use the "nocheck"
variants, C<timelocal_nocheck()> and C<timegm_nocheck()>. These variants must
be explicitly imported.
If you supply data which is not valid (month 27, second 1,000) the results
will be unpredictable (so don't do that).
Note that my benchmarks show that this is just a 3% speed increase over the
checked versions, so unless calling C<Time::Local> is the hottest spot in your
application, using these nocheck variants is unlikely to have much impact on
your application.
=head2 Year Value Interpretation
B<This does not apply to the C<*_posix> or C<*_modern> functions. Use those
exports if you want to ensure consistent behavior as your code ages.>
Strictly speaking, the year should be specified in a form consistent with
C<localtime()>, i.e. the offset from 1900. In order to make the interpretation
of the year easier for humans, however, who are more accustomed to seeing
years as two-digit or four-digit values, the following conventions are
followed:
=over 4
=item *
Years greater than 999 are interpreted as being the actual year, rather than
the offset from 1900. Thus, 1964 would indicate the year Martin Luther King
won the Nobel prize, not the year 3864.
=item *
Years in the range 100..999 are interpreted as offset from 1900, so that 112
indicates 2012. This rule also applies to years less than zero (but see note
below regarding date range).
=item *
Years in the range 0..99 are interpreted as shorthand for years in the rolling
"current century," defined as 50 years on either side of the current
year. Thus, today, in 1999, 0 would refer to 2000, and 45 to 2045, but 55
would refer to 1955. Twenty years from now, 55 would instead refer to
2055. This is messy, but matches the way people currently think about two
digit dates. Whenever possible, use an absolute four digit year instead.
=back
The scheme above allows interpretation of a wide range of dates, particularly
if 4-digit years are used. But it also means that the behavior of your code
changes as time passes, because the rolling "current century" changes each
year.
=head2 Limits of time_t
On perl versions older than 5.12.0, the range of dates that can be actually be
handled depends on the size of C<time_t> (usually a signed integer) on the
given platform. Currently, this is 32 bits for most systems, yielding an
approximate range from Dec 1901 to Jan 2038.
Both C<timelocal()> and C<timegm()> croak if given dates outside the supported
range.
As of version 5.12.0, perl has stopped using the time implementation of the
operating system it's running on. Instead, it has its own implementation of
those routines with a safe range of at least +/- 2**52 (about 142 million
years)
=head2 Ambiguous Local Times (DST)
Because of DST changes, there are many time zones where the same local time
occurs for two different GMT times on the same day. For example, in the
"Europe/Paris" time zone, the local time of 2001-10-28 02:30:00 can represent
either 2001-10-28 00:30:00 GMT, B<or> 2001-10-28 01:30:00 GMT.
When given an ambiguous local time, the timelocal() function will always
return the epoch for the I<earlier> of the two possible GMT times.
=head2 Non-Existent Local Times (DST)
When a DST change causes a locale clock to skip one hour forward, there will
be an hour's worth of local times that don't exist. Again, for the
"Europe/Paris" time zone, the local clock jumped from 2001-03-25 01:59:59 to
2001-03-25 03:00:00.
If the C<timelocal()> function is given a non-existent local time, it will
simply return an epoch value for the time one hour later.
=head2 Negative Epoch Values
On perl version 5.12.0 and newer, negative epoch values are fully supported.
On older versions of perl, negative epoch (C<time_t>) values, which are not
officially supported by the POSIX standards, are known not to work on some
systems. These include MacOS (pre-OSX) and Win32.
On systems which do support negative epoch values, this module should be able
to cope with dates before the start of the epoch, down the minimum value of
time_t for the system.
=head1 IMPLEMENTATION
These routines are quite efficient and yet are always guaranteed to agree with
C<localtime()> and C<gmtime()>. We manage this by caching the start times of
any months we've seen before. If we know the start time of the month, we can
always calculate any time within the month. The start times are calculated
using a mathematical formula. Unlike other algorithms that do multiple calls
to C<gmtime()>.
The C<timelocal()> function is implemented using the same cache. We just
assume that we're translating a GMT time, and then fudge it when we're done
for the timezone and daylight savings arguments. Note that the timezone is
evaluated for each date because countries occasionally change their official
timezones. Assuming that C<localtime()> corrects for these changes, this
routine will also be correct.
=head1 AUTHORS EMERITUS
This module is based on a Perl 4 library, timelocal.pl, that was
included with Perl 4.036, and was most likely written by Tom
Christiansen.
The current version was written by Graham Barr.
=head1 BUGS
The whole scheme for interpreting two-digit years can be considered a bug.
Bugs may be submitted at L<https://github.com/houseabsolute/Time-Local/issues>.
There is a mailing list available for users of this distribution,
L<mailto:datetime@perl.org>.
I am also usually active on IRC as 'autarch' on C<irc://irc.perl.org>.
=head1 SOURCE
The source code repository for Time-Local can be found at L<https://github.com/houseabsolute/Time-Local>.
=head1 AUTHOR
Dave Rolsky <autarch@urth.org>
=head1 CONTRIBUTORS
=for stopwords Florian Ragwitz J. Nick Koston Unknown
=over 4
=item *
Florian Ragwitz <rafl@debian.org>
=item *
J. Nick Koston <nick@cpanel.net>
=item *
Unknown <unknown@example.com>
=back
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 1997 - 2020 by Graham Barr & Dave Rolsky.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
The full text of the license can be found in the
F<LICENSE> file included with this distribution.
=cut

1190
database/perl/lib/Time/Piece.pm Normal file
View File

File diff suppressed because it is too large Load Diff

266
database/perl/lib/Time/Seconds.pm Normal file
View File

@@ -0,0 +1,266 @@
package Time::Seconds;
use strict;
our $VERSION = '1.3401';
use Exporter 5.57 'import';
our @EXPORT = qw(
ONE_MINUTE
ONE_HOUR
ONE_DAY
ONE_WEEK
ONE_MONTH
ONE_YEAR
ONE_FINANCIAL_MONTH
LEAP_YEAR
NON_LEAP_YEAR
);
our @EXPORT_OK = qw(cs_sec cs_mon);
use constant {
ONE_MINUTE => 60,
ONE_HOUR => 3_600,
ONE_DAY => 86_400,
ONE_WEEK => 604_800,
ONE_MONTH => 2_629_744, # ONE_YEAR / 12
ONE_YEAR => 31_556_930, # 365.24225 days
ONE_FINANCIAL_MONTH => 2_592_000, # 30 days
LEAP_YEAR => 31_622_400, # 366 * ONE_DAY
NON_LEAP_YEAR => 31_536_000, # 365 * ONE_DAY
# hacks to make Time::Piece compile once again
cs_sec => 0,
cs_mon => 1,
};
use overload
'fallback' => 'undef',
'0+' => \&seconds,
'""' => \&seconds,
'<=>' => \&compare,
'+' => \&add,
'-' => \&subtract,
'-=' => \&subtract_from,
'+=' => \&add_to,
'=' => \&copy;
sub new {
my $class = shift;
my ($val) = @_;
$val = 0 unless defined $val;
bless \$val, $class;
}
sub _get_ovlvals {
my ($lhs, $rhs, $reverse) = @_;
$lhs = $lhs->seconds;
if (UNIVERSAL::isa($rhs, 'Time::Seconds')) {
$rhs = $rhs->seconds;
}
elsif (ref($rhs)) {
die "Can't use non Seconds object in operator overload";
}
if ($reverse) {
return $rhs, $lhs;
}
return $lhs, $rhs;
}
sub compare {
my ($lhs, $rhs) = _get_ovlvals(@_);
return $lhs <=> $rhs;
}
sub add {
my ($lhs, $rhs) = _get_ovlvals(@_);
return Time::Seconds->new($lhs + $rhs);
}
sub add_to {
my $lhs = shift;
my $rhs = shift;
$rhs = $rhs->seconds if UNIVERSAL::isa($rhs, 'Time::Seconds');
$$lhs += $rhs;
return $lhs;
}
sub subtract {
my ($lhs, $rhs) = _get_ovlvals(@_);
return Time::Seconds->new($lhs - $rhs);
}
sub subtract_from {
my $lhs = shift;
my $rhs = shift;
$rhs = $rhs->seconds if UNIVERSAL::isa($rhs, 'Time::Seconds');
$$lhs -= $rhs;
return $lhs;
}
sub copy {
Time::Seconds->new(${$_[0]});
}
sub seconds {
my $s = shift;
return $$s;
}
sub minutes {
my $s = shift;
return $$s / 60;
}
sub hours {
my $s = shift;
$s->minutes / 60;
}
sub days {
my $s = shift;
$s->hours / 24;
}
sub weeks {
my $s = shift;
$s->days / 7;
}
sub months {
my $s = shift;
$s->days / 30.4368541;
}
sub financial_months {
my $s = shift;
$s->days / 30;
}
sub years {
my $s = shift;
$s->days / 365.24225;
}
sub _counted_objects {
my ($n, $counted) = @_;
my $number = sprintf("%d", $n); # does a "floor"
$counted .= 's' if 1 != $number;
return ($number, $counted);
}
sub pretty {
my $s = shift;
my $str = "";
if ($s < 0) {
$s = -$s;
$str = "minus ";
}
if ($s >= ONE_MINUTE) {
if ($s >= ONE_HOUR) {
if ($s >= ONE_DAY) {
my ($days, $sd) = _counted_objects($s->days, "day");
$str .= "$days $sd, ";
$s -= ($days * ONE_DAY);
}
my ($hours, $sh) = _counted_objects($s->hours, "hour");
$str .= "$hours $sh, ";
$s -= ($hours * ONE_HOUR);
}
my ($mins, $sm) = _counted_objects($s->minutes, "minute");
$str .= "$mins $sm, ";
$s -= ($mins * ONE_MINUTE);
}
$str .= join " ", _counted_objects($s->seconds, "second");
return $str;
}
1;
__END__
=encoding utf8
=head1 NAME
Time::Seconds - a simple API to convert seconds to other date values
=head1 SYNOPSIS
use Time::Piece;
use Time::Seconds;
my $t = localtime;
$t += ONE_DAY;
my $t2 = localtime;
my $s = $t - $t2;
print "Difference is: ", $s->days, "\n";
=head1 DESCRIPTION
This module is part of the Time::Piece distribution. It allows the user
to find out the number of minutes, hours, days, weeks or years in a given
number of seconds. It is returned by Time::Piece when you delta two
Time::Piece objects.
Time::Seconds also exports the following constants:
ONE_DAY
ONE_WEEK
ONE_HOUR
ONE_MINUTE
ONE_MONTH
ONE_YEAR
ONE_FINANCIAL_MONTH
LEAP_YEAR
NON_LEAP_YEAR
Since perl does not (yet?) support constant objects, these constants are in
seconds only, so you cannot, for example, do this: C<print ONE_WEEK-E<gt>minutes;>
=head1 METHODS
The following methods are available:
my $val = Time::Seconds->new(SECONDS)
$val->seconds;
$val->minutes;
$val->hours;
$val->days;
$val->weeks;
$val->months;
$val->financial_months; # 30 days
$val->years;
$val->pretty; # gives English representation of the delta
The usual arithmetic (+,-,+=,-=) is also available on the objects.
The methods make the assumption that there are 24 hours in a day, 7 days in
a week, 365.24225 days in a year and 12 months in a year.
(from The Calendar FAQ at http://www.tondering.dk/claus/calendar.html)
=head1 AUTHOR
Matt Sergeant, matt@sergeant.org
Tobias Brox, tobiasb@tobiasb.funcom.com
Balázs Szabó (dLux), dlux@kapu.hu
=head1 COPYRIGHT AND LICENSE
Copyright 2001, Larry Wall.
This module is free software, you may distribute it under the same terms
as Perl.
=head1 Bugs
Currently the methods aren't as efficient as they could be, for reasons of
clarity. This is probably a bad idea.
=cut

95
database/perl/lib/Time/gmtime.pm Normal file
View File

@@ -0,0 +1,95 @@
package Time::gmtime;
use strict;
use 5.006_001;
use Time::tm;
our (@ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS, $VERSION);
our ( $tm_sec, $tm_min, $tm_hour, $tm_mday,
$tm_mon, $tm_year, $tm_wday, $tm_yday,
$tm_isdst,
);
BEGIN {
use Exporter ();
@ISA = qw(Exporter Time::tm);
@EXPORT = qw(gmtime gmctime);
@EXPORT_OK = qw(
$tm_sec $tm_min $tm_hour $tm_mday
$tm_mon $tm_year $tm_wday $tm_yday
$tm_isdst
);
%EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] );
$VERSION = 1.04;
}
sub populate (@) {
return unless @_;
my $tmob = Time::tm->new();
@$tmob = (
$tm_sec, $tm_min, $tm_hour, $tm_mday,
$tm_mon, $tm_year, $tm_wday, $tm_yday,
$tm_isdst )
= @_;
return $tmob;
}
sub gmtime (;$) { populate CORE::gmtime(@_ ? shift : time)}
sub gmctime (;$) { scalar CORE::gmtime(@_ ? shift : time)}
1;
__END__
=head1 NAME
Time::gmtime - by-name interface to Perl's built-in gmtime() function
=head1 SYNOPSIS
use Time::gmtime;
$gm = gmtime();
printf "The day in Greenwich is %s\n",
(qw(Sun Mon Tue Wed Thu Fri Sat Sun))[ $gm->wday() ];
use Time::gmtime qw(:FIELDS);
gmtime();
printf "The day in Greenwich is %s\n",
(qw(Sun Mon Tue Wed Thu Fri Sat Sun))[ $tm_wday ];
$now = gmctime();
use Time::gmtime;
use File::stat;
$date_string = gmctime(stat($file)->mtime);
=head1 DESCRIPTION
This module's default exports override the core gmtime() function,
replacing it with a version that returns "Time::tm" objects.
This object has methods that return the similarly named structure field
name from the C's tm structure from F<time.h>; namely sec, min, hour,
mday, mon, year, wday, yday, and isdst.
You may also import all the structure fields directly into your namespace
as regular variables using the :FIELDS import tag. (Note that this
still overrides your core functions.) Access these fields as variables
named with a preceding C<tm_> in front their method names. Thus,
C<$tm_obj-E<gt>mday()> corresponds to $tm_mday if you import the fields.
The gmctime() function provides a way of getting at the
scalar sense of the original CORE::gmtime() function.
To access this functionality without the core overrides,
pass the C<use> an empty import list, and then access
function functions with their full qualified names.
On the other hand, the built-ins are still available
via the C<CORE::> pseudo-package.
=head1 NOTE
While this class is currently implemented using the Class::Struct
module to build a struct-like class, you shouldn't rely upon this.
=head1 AUTHOR
Tom Christiansen

91
database/perl/lib/Time/localtime.pm Normal file
View File

@@ -0,0 +1,91 @@
package Time::localtime;
use strict;
use 5.006_001;
use Time::tm;
our (@ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS, $VERSION);
our (
$tm_sec, $tm_min, $tm_hour, $tm_mday,
$tm_mon, $tm_year, $tm_wday, $tm_yday,
$tm_isdst
);
BEGIN {
use Exporter ();
@ISA = qw(Exporter Time::tm);
@EXPORT = qw(localtime ctime);
@EXPORT_OK = qw(
$tm_sec $tm_min $tm_hour $tm_mday
$tm_mon $tm_year $tm_wday $tm_yday
$tm_isdst
);
%EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] );
$VERSION = 1.03;
}
sub populate (@) {
return unless @_;
my $tmob = Time::tm->new();
@$tmob = (
$tm_sec, $tm_min, $tm_hour, $tm_mday,
$tm_mon, $tm_year, $tm_wday, $tm_yday,
$tm_isdst )
= @_;
return $tmob;
}
sub localtime (;$) { populate CORE::localtime(@_ ? shift : time)}
sub ctime (;$) { scalar CORE::localtime(@_ ? shift : time) }
1;
__END__
=head1 NAME
Time::localtime - by-name interface to Perl's built-in localtime() function
=head1 SYNOPSIS
use Time::localtime;
printf "Year is %d\n", localtime->year() + 1900;
$now = ctime();
use Time::localtime;
use File::stat;
$date_string = ctime(stat($file)->mtime);
=head1 DESCRIPTION
This module's default exports override the core localtime() function,
replacing it with a version that returns "Time::tm" objects.
This object has methods that return the similarly named structure field
name from the C's tm structure from F<time.h>; namely sec, min, hour,
mday, mon, year, wday, yday, and isdst.
You may also import all the structure fields directly into your namespace
as regular variables using the :FIELDS import tag. (Note that this still
overrides your core functions.) Access these fields as
variables named with a preceding C<tm_> in front their method names.
Thus, C<$tm_obj-E<gt>mday()> corresponds to $tm_mday if you import
the fields.
The ctime() function provides a way of getting at the
scalar sense of the original CORE::localtime() function.
To access this functionality without the core overrides,
pass the C<use> an empty import list, and then access
function functions with their full qualified names.
On the other hand, the built-ins are still available
via the C<CORE::> pseudo-package.
=head1 NOTE
While this class is currently implemented using the Class::Struct
module to build a struct-like class, you shouldn't rely upon this.
=head1 AUTHOR
Tom Christiansen

33
database/perl/lib/Time/tm.pm Normal file
View File

@@ -0,0 +1,33 @@
package Time::tm;
use strict;
our $VERSION = '1.00';
use Class::Struct qw(struct);
struct('Time::tm' => [
map { $_ => '$' } qw{ sec min hour mday mon year wday yday isdst }
]);
1;
__END__
=head1 NAME
Time::tm - internal object used by Time::gmtime and Time::localtime
=head1 SYNOPSIS
Don't use this module directly.
=head1 DESCRIPTION
This module is used internally as a base class by Time::localtime And
Time::gmtime functions. It creates a Time::tm struct object which is
addressable just like's C's tm structure from F<time.h>; namely with sec,
min, hour, mday, mon, year, wday, yday, and isdst.
This class is an internal interface only.
=head1 AUTHOR
Tom Christiansen