107 lines
2.1 KiB
Perl
107 lines
2.1 KiB
Perl
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# Copyright © 2002 Adam Heath <doogie@debian.org>
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# Copyright © 2012-2013 Guillem Jover <guillem@debian.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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package Dpkg::Exit;
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use strict;
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use warnings;
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our $VERSION = '1.01';
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our @EXPORT_OK = qw(
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push_exit_handler
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pop_exit_handler
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run_exit_handlers
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);
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use Exporter qw(import);
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# XXX: Backwards compatibility, stop exporting on VERSION 2.00.
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## no critic (Variables::ProhibitPackageVars)
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our @handlers = ();
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## use critic
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=encoding utf8
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=head1 NAME
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Dpkg::Exit - program exit handlers
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=head1 DESCRIPTION
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The Dpkg::Exit module provides support functions to run handlers on exit.
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=head1 FUNCTIONS
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=over 4
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=item push_exit_handler($func)
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Register a code reference into the exit function handlers stack.
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=cut
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sub push_exit_handler {
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my ($func) = shift;
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push @handlers, $func;
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}
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=item pop_exit_handler()
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Pop the last registered exit handler from the handlers stack.
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=cut
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sub pop_exit_handler {
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pop @handlers;
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}
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=item run_exit_handlers()
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Run the registered exit handlers.
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=cut
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sub run_exit_handlers {
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$_->() foreach (reverse @handlers);
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}
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sub _exit_handler {
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run_exit_handlers();
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exit(127);
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}
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$SIG{INT} = \&_exit_handler;
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$SIG{HUP} = \&_exit_handler;
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$SIG{QUIT} = \&_exit_handler;
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=back
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=head1 CHANGES
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=head2 Version 1.01 (dpkg 1.17.2)
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New functions: push_exit_handler(), pop_exit_handler(), run_exit_handlers()
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Deprecated variable: @handlers
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=head2 Version 1.00 (dpkg 1.15.6)
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Mark the module as public.
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=cut
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1;
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