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Diffstat (limited to '')
-rw-r--r-- | scripts/Dpkg/Exit.pm | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/scripts/Dpkg/Exit.pm b/scripts/Dpkg/Exit.pm new file mode 100644 index 0000000..5e513b4 --- /dev/null +++ b/scripts/Dpkg/Exit.pm @@ -0,0 +1,106 @@ +# Copyright © 2002 Adam Heath <doogie@debian.org> +# Copyright © 2012-2013 Guillem Jover <guillem@debian.org> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <https://www.gnu.org/licenses/>. + +package Dpkg::Exit; + +use strict; +use warnings; + +our $VERSION = '1.01'; +our @EXPORT_OK = qw( + push_exit_handler + pop_exit_handler + run_exit_handlers +); + +use Exporter qw(import); + +# XXX: Backwards compatibility, stop exporting on VERSION 2.00. +## no critic (Variables::ProhibitPackageVars) +our @handlers = (); +## use critic + +=encoding utf8 + +=head1 NAME + +Dpkg::Exit - program exit handlers + +=head1 DESCRIPTION + +The Dpkg::Exit module provides support functions to run handlers on exit. + +=head1 FUNCTIONS + +=over 4 + +=item push_exit_handler($func) + +Register a code reference into the exit function handlers stack. + +=cut + +sub push_exit_handler { + my ($func) = shift; + push @handlers, $func; +} + +=item pop_exit_handler() + +Pop the last registered exit handler from the handlers stack. + +=cut + +sub pop_exit_handler { + pop @handlers; +} + +=item run_exit_handlers() + +Run the registered exit handlers. + +=cut + +sub run_exit_handlers { + $_->() foreach (reverse @handlers); +} + +sub _exit_handler { + run_exit_handlers(); + exit(127); +} + +$SIG{INT} = \&_exit_handler; +$SIG{HUP} = \&_exit_handler; +$SIG{QUIT} = \&_exit_handler; + +=back + +=head1 CHANGES + +=head2 Version 1.01 (dpkg 1.17.2) + +New functions: push_exit_handler(), pop_exit_handler(), run_exit_handlers() + +Deprecated variable: @handlers + +=head2 Version 1.00 (dpkg 1.15.6) + +Mark the module as public. + +=cut + +1; |