check_qemu_oom

#!/usr/bin/perl -w
# Copyright 2021 SUSE LLC
# SPDX-License-Identifier: GPL-2.0-or-later
#

=head1 check_qemu_oom

check_qemu_oom - check if qemu is killed due to system being out of memory

=head1 SYNOPSIS

check_qemu_oom qemu_pid

=cut

use Mojo::Base -strict, -signatures;
use Getopt::Long;

Getopt::Long::Configure("no_ignore_case");

my %options;

sub usage ($r) {
    eval { require Pod::Usage; Pod::Usage::pod2usage($r) };
    die "cannot display help, install perl(Pod::Usage)\n" if $@;    # uncoverable statement
}

GetOptions(\%options, 'help|h|?') or usage(1);
usage(0) if $options{help};
usage(1) unless @ARGV;
my $qemu_pid = $ARGV[0] or usage(1);
my $oom_log_cmd = $ENV{CHECK_QEMU_OOM_LOG_CMD} // 'dmesg';
exit(index(qx{$oom_log_cmd} // '', "Out of memory: Killed process $qemu_pid") != -1 ? 0 : 1);