package Perf::Trace::Util;
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|
use 5.010000;
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use strict;
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use warnings;
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require Exporter;
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our @ISA = qw(Exporter);
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our %EXPORT_TAGS = ( 'all' => [ qw(
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) ] );
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our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
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our @EXPORT = qw(
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avg nsecs nsecs_secs nsecs_nsecs nsecs_usecs print_nsecs
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clear_term
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);
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our $VERSION = '0.01';
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sub avg
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{
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my ($total, $n) = @_;
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return $total / $n;
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}
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my $NSECS_PER_SEC = 1000000000;
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sub nsecs
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{
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my ($secs, $nsecs) = @_;
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return $secs * $NSECS_PER_SEC + $nsecs;
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}
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sub nsecs_secs {
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my ($nsecs) = @_;
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return $nsecs / $NSECS_PER_SEC;
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}
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sub nsecs_nsecs {
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my ($nsecs) = @_;
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return $nsecs % $NSECS_PER_SEC;
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}
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sub nsecs_str {
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my ($nsecs) = @_;
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my $str = sprintf("%5u.%09u", nsecs_secs($nsecs), nsecs_nsecs($nsecs));
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return $str;
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}
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sub clear_term
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{
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print "\x1b[H\x1b[2J";
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}
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1;
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__END__
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=head1 NAME
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Perf::Trace::Util - Perl extension for perf script
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=head1 SYNOPSIS
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use Perf::Trace::Util;
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=head1 SEE ALSO
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Perf (script) documentation
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=head1 AUTHOR
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Tom Zanussi, E<lt>tzanussi@gmail.com<gt>
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=head1 COPYRIGHT AND LICENSE
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Copyright (C) 2009 by Tom Zanussi
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This library is free software; you can redistribute it and/or modify
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it under the same terms as Perl itself, either Perl version 5.10.0 or,
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at your option, any later version of Perl 5 you may have available.
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Alternatively, this software may be distributed under the terms of the
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GNU General Public License ("GPL") version 2 as published by the Free
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Software Foundation.
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=cut
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