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# <@LICENSE>
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to you under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# </@LICENSE>
package Mail::SpamAssassin::Locker;
use strict;
use warnings;
# use bytes;
use re 'taint';
use Fcntl;
use Time::HiRes ();
use Mail::SpamAssassin;
our @ISA = qw();
###########################################################################
sub new {
my $class = shift;
$class = ref($class) || $class;
my $self = { };
bless ($self, $class);
$self;
}
###########################################################################
sub safe_lock {
my ($self, $path, $max_retries, $mode) = @_;
# max_retries is optional, should default to about 30
# mode is UNIX-style and optional, should default to 0700,
# callers must specify --x bits
die "locker: safe_lock not implemented by Locker subclass";
}
###########################################################################
sub safe_unlock {
my ($self, $path) = @_;
die "locker: safe_unlock not implemented by Locker subclass";
}
###########################################################################
sub refresh_lock {
my ($self, $path) = @_;
die "locker: refresh_lock not implemented by Locker subclass";
}
###########################################################################
sub jittery_one_second_sleep {
my ($self) = @_;
Time::HiRes::sleep(rand(1.0) + 0.5);
}
sub jittery_half_second_sleep {
my ($self) = @_;
Time::HiRes::sleep(rand(0.5) + 0.25);
}
###########################################################################
1;