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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.
package Bugzilla::Instrument;
use strict;
use warnings;
use Bugzilla::Constants;
use FileHandle;
use Sys::Hostname;
use Time::HiRes qw(time);
sub new {
my ($class, $name) = @_;
my $self = {
name => $name,
times => [],
fh => FileHandle->new('>>' . _filename($name)),
};
return bless($self, $class);
}
sub DESTROY {
my ($self) = @_;
$self->{fh}->print("\n");
$self->{fh}->close();
}
sub begin {
my ($self, $label) = @_;
my $now = (time);
push @{ $self->{times} }, { time => $now, label => $label };
$self->_log($now, undef, $label);
}
sub end {
my ($self, $label) = @_;
my $now = (time);
my $timer = pop @{ $self->{times} };
my $start = $timer ? $timer->{time} : undef;
$label ||= $timer->{label} if $timer;
$self->_log($now, $start, $label);
}
sub _log {
my ($self, $now, $then, $label) = @_;
$label ||= '';
my $level = scalar(@{ $self->{times} });
if ($then) {
$label = ('<' x ($level + 1)) . ' ' . $label;
$self->{fh}->printf("[%.5f] %-60s (+%.4f)\n", $now, $label, $now - $then);
} else {
$label = ('>' x $level) . ' ' . $label;
$self->{fh}->printf("[%.5f] %s\n", $now, $label);
}
}
our ($_path, $_host);
sub _filename {
my ($name) = @_;
if (!$_path) {
$_path = bz_locations()->{datadir} . "/timings";
mkdir($_path) unless -d $_path;
$_host = hostname();
$_host =~ s/^([^\.]+)\..+/$1/;
}
return "$_path/$name-$_host-$$.log";
}
1;
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