msg.t

来自「source of perl for linux application,」· T 代码 · 共 66 行

BEGIN {
    chdir 't' if -d 't';

    @INC = '../lib';

    require Config; import Config;

    my $reason;

    if ($Config{'extensions'} !~ /\bIPC\/SysV\b/) {
      $reason = 'IPC::SysV was not built';
    } elsif ($Config{'d_sem'} ne 'define') {
      $reason = '$Config{d_sem} undefined';
    } elsif ($Config{'d_msg'} ne 'define') {
      $reason = '$Config{d_msg} undefined';
    }
    if ($reason) {
	print "1..0 # Skip: $reason\n";
	exit 0;
    }
}

use IPC::SysV qw(IPC_PRIVATE IPC_RMID IPC_NOWAIT IPC_STAT S_IRWXU S_IRWXG S_IRWXO);

use IPC::Msg;
#Creating a message queue

print "1..9\n";

my $msq =
    new IPC::Msg(IPC_PRIVATE, S_IRWXU | S_IRWXG | S_IRWXO)
    || die "msgget: ",$!+0," $!\n";
	
print "ok 1\n";

#Putting a message on the queue
$msgtype = 1;
$msg = "hello";
print $msq->snd($msgtype,$msg,IPC_NOWAIT) ? "ok 2\n" : "not ok 2 # $!\n";

#Check if there are messages on the queue
$ds = $msq->stat() or print "not ";
print "ok 3\n";

print "not " unless $ds && $ds->qnum() == 1;
print "ok 4\n";

#Retreiving a message from the queue
$rmsgtype = 0; # Give me any type
$rmsgtype = $msq->rcv($rmsg,256,$rmsgtype,IPC_NOWAIT) || print "not ";
print "ok 5\n";

print "not " unless $rmsgtype == $msgtype && $rmsg eq $msg;
print "ok 6\n";

$ds = $msq->stat() or print "not ";
print "ok 7\n";

print "not " unless $ds && $ds->qnum() == 0;
print "ok 8\n";

END {
	(defined $msq && $msq->remove) || print "not ";
	print "ok 9\n";
}