mirror of
https://github.com/percona/percona-toolkit.git
synced 2025-09-10 13:11:32 +00:00
d3ef9edaaa
Still TODO: Attributes still have a single method that doubles as a getter and setter. The constructor for Diskstats is still weird -- A tad more stricter than it should be, if anything. ->print_rest is still rest, even though that's hardly memorable, mostly because of a lack of ideas on what to rename it. The main loop in the Menu is still a while (1). As a nice perk, it's nearly twice as fast now! It also adds a _very_ experimental --memory-for-speed argument, which turns on memoization for the current biggest bottleneck.
123 lines
3.6 KiB
Perl
123 lines
3.6 KiB
Perl
# This program is copyright 2011 Percona Inc.
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# Feedback and improvements are welcome.
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#
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# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
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# systems, you can issue `man perlgpl' or `man perlartistic' to read these
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# licenses.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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# Place, Suite 330, Boston, MA 02111-1307 USA.
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# ###########################################################################
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# DiskstatsGroupByAll package
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# ###########################################################################
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{
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# Package: DiskstatsGroupByAll
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#
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package DiskstatsGroupByAll;
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use warnings;
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use strict;
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use English qw(-no_match_vars);
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use constant MKDEBUG => $ENV{MKDEBUG} || 0;
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use base qw( Diskstats );
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sub group_by_all {
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my ($self, %args) = @_;
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$self->clear_state();
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if (!$self->interactive) {
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$self->parse_from(
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sample_callback => sub {
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$self->print_deltas(
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map { ( $_ => $args{$_} ) }
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qw( header_callback rest_callback ),
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);
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},
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map( { ($_ => $args{$_}) } qw(filehandle filename data) ),
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);
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}
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else {
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my $orig = tell $args{filehandle};
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$self->parse_from(
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sample_callback => sub {
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$self->print_deltas(
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header_callback => sub {
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my $self = shift;
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if ( $self->{_print_header} ) {
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my $meth = $args{header_callback} || "print_header";
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$self->$meth(@_);
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}
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$self->{_print_header} = undef;
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},
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rest_callback => $args{rest_callback},
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);
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},
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map( { ($_ => $args{$_}) } qw(filehandle filename data) ),
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);
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if (!$self->prev_ts) {
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seek $args{filehandle}, $orig, 0;
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}
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return;
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}
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$self->clear_state();
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}
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# The next methods are all overrides!
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sub group_by {
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my $self = shift;
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$self->group_by_all(@_);
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}
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sub clear_state {
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my $self = shift;
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if (!$self->interactive()) {
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$self->SUPER::clear_state(@_);
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}
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else {
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my $orig_print_header = $self->{_print_header};
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$self->SUPER::clear_state(@_);
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$self->{_print_header} = $orig_print_header;
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}
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}
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sub delta_against {
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my ($self, $dev) = @_;
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return $self->prev_stats_for($dev);
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}
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sub delta_against_ts {
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my ($self) = @_;
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return $self->prev_ts();
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}
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sub compute_line_ts {
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my ($self, %args) = @_;
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if ( $self->interactive() ) {
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# In interactive mode, we always compare against the previous sample,
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# but the default is to compare against the first.
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# This is generally a non-issue, because it can only happen
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# when there are more than two samples left to parse in the file,
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# which can only happen when someone sets a redisplay or sampling
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# interval (or both) too high.
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$args{first_ts} = $self->prev_ts();
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}
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return $self->SUPER::compute_line_ts(%args);
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}
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1;
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}
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# ###########################################################################
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# End DiskstatsGroupByAll package
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# ###########################################################################
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