6 use POSIX qw/SIGINT SIGTERM SIGKILL EXIT_SUCCESS/;
10 use IPC::MorseSignals qw/msend mrecv/;
19 while ($speed && $ok < $n) {
20 $desc = "$n sends of $l bytes at $speed bits/s";
23 print STDERR "try $desc";
27 my @alpha = ('a' .. 'z');
28 my $msg = join '', map { $alpha[rand @alpha] } 1 .. $l;
29 pipe my $rdr, my $wtr or die "$desc: pipe() failed : $!";
32 die "$desc: fork() failed : $!";
35 local @SIG{qw/USR1 USR2/} = mrecv sub {
36 print $wtr $_[0], "\n";
42 close $wtr or die "$desc: close() failed : $!";
44 local $SIG{ALRM} = sub { die 'timeout' };
45 my $a = (int(100 * (3 * $l) / $speed) || 1);
48 msend $msg => $pid, $speed;
56 close $rdr or die "$desc: close() failed : $!";
57 print STDERR " timeout\n";
60 my $recv = do { local $/; <$rdr> };
61 close $rdr or die "$desc: close() failed : $!";
67 print STDERR " transfer error\n";
71 print STDERR " transfer failure\n";
77 print STDERR " OK\n\n";
78 $desc = "$l bytes sent $n times";
79 push @res, "$desc at $speed bits/s";
97 print STDERR "=== Summary ===\n";
98 print STDERR "$_\n" for @res;