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|
package ZMQ::FFI::Util;
$ZMQ::FFI::Util::VERSION = '1.19';
# ABSTRACT: zmq convenience functions
use strict;
use warnings;
use FFI::Platypus;
use FFI::CheckLib qw(find_lib);
use Carp;
use Sub::Exporter -setup => {
exports => [qw(
zmq_soname
zmq_version
valid_soname
current_tid
)],
};
sub zmq_soname {
my %args = @_;
my $die = $args{die};
my ($soname) = find_lib(
lib => 'zmq',
alien => 'Alien::ZMQ::latest',
verify => sub {
my($name, $libpath) = @_;
return valid_soname($libpath);
},
);
if ( !$soname && $die ) {
croak
qq(Could not load libzmq:\n),
q(Is libzmq on your loader path?);
}
return $soname;
}
sub zmq_version {
my ($soname) = @_;
$soname //= zmq_soname();
return unless $soname;
my $ffi = FFI::Platypus->new( lib => $soname, ignore_not_found => 1 );
my $zmq_version = $ffi->function(
'zmq_version',
['int*', 'int*', 'int*'],
'void'
);
unless (defined $zmq_version) {
croak "Could not find zmq_version in '$soname'\n"
. "Is '$soname' on your loader path?";
}
my ($major, $minor, $patch);
$zmq_version->call(\$major, \$minor, \$patch);
return $major, $minor, $patch;
}
sub valid_soname {
my ($soname) = @_;
my $ffi = FFI::Platypus->new( lib => $soname, ignore_not_found => 1 );
my $zmq_version = $ffi->function(
'zmq_version',
['int*', 'int*', 'int*'],
'void'
);
return defined $zmq_version;
}
sub current_tid {
if (eval 'use threads; 1') {
require threads;
threads->import();
return threads->tid;
}
else {
return -1;
}
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
ZMQ::FFI::Util - zmq convenience functions
=head1 VERSION
version 1.19
=head1 SYNOPSIS
use ZMQ::FFI::Util q(zmq_soname zmq_version)
my $soname = zmq_soname();
my ($major, $minor, $patch) = zmq_version($soname);
=head1 FUNCTIONS
=head2 zmq_soname([die => 0|1])
Tries to load C<libzmq> by looking for platform-specific shared library file
using L<FFI::CheckLib> with a fallback to L<Alien::ZMQ::latest>.
Returns the name of the first one that was successful or undef. If you would
prefer exceptional behavior pass C<die =E<gt> 1>
=head2 ($major, $minor, $patch) = zmq_version([$soname])
return the libzmq version as the list C<($major, $minor, $patch)>. C<$soname>
can either be a filename available in the ld cache or the path to a library
file. If C<$soname> is not specified it is resolved using C<zmq_soname> above
If C<$soname> cannot be resolved undef is returned
=head1 SEE ALSO
=over 4
=item *
L<ZMQ::FFI>
=back
=head1 AUTHOR
Dylan Cali <calid1984@gmail.com>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2023 by Dylan Cali.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
