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CPAN::Forum
threads - threads not finished as expected
| Posted on Tue Dec 2 14:59:55 2008 by hongwu |
| threads not finished as expected |
|
hello, i wrote a program which has two threads.
when it runs for a few minutes, every thing is ok, two threads could exit properly when i "ctl-c".
(the unsubscribe function:
$aReceiver->unsubscribe({ destination => "/queue/$queue2"});
$sReceiver->unsubscribe({ destination => "/queue/$queue1"});
in two threads could be executed without problem)
but when it runs for a long time, one hour, for example, when i "ctl-c", the
$aReceiver->unsubscribe({ destination => "/queue/$queue2"});
$sReceiver->unsubscribe({ destination => "/queue/$queue1"});
could not be executed.
I do not know what is the problem, could you please analyze it?
thanks!
here goes the program:
--------------------------------------------------------------------
#!/usr/bin/perl -w
use strict;
use Switch;
use Time::HiRes qw(usleep ualarm gettimeofday tv_interval);
use Net::Stomp;
use Term::ANSIColor;
#for multithread
use threads;
use threads::shared;
#for ActiveMQ connection
my $aq_host = "10.255.1.130";
my $aq_port = '61613';
my $sSender;
my $sReceiver;
my $aReceiver;
my $queue1 = "queue1";
my $queue2 = "queue2";
my $running : shared = 1;
my $thread_th1;
my $thread_th2;
sub cleanup()
{
print colored ("\n.STOP received! \n", 'red');
$running=0;
print ".Stopping Thread1 ...... ";
my $r1 = $thread_th1->join();
print colored ("$r1\n", 'green');
print ".Stopping Thread2 ...... ";
my $r2 = $thread_th2->join();
print colored ("$r2\n", 'green');
print ".Disconnecting ActiveMQ connector ...... ";
$sReceiver->disconnect();
$aReceiver->disconnect();
print colored ("OK\n", 'green');
print "\n";
print colored ("ALL Nicely Stopped, see you!\n\n", 'yellow');
}
sub th1()
{
$sReceiver->subscribe({ destination => "/queue/$queue1",
'ack' => 'client',
'activemq.prefetchSize' => 1});
while($running){
if ($sReceiver->can_read({timeout=>'1'}))
{
my $frame = $sReceiver->receive_frame;
my $body = $frame->body;
#print "get message from queue 1: $body \n";
ptMsg($body);
#Ack msg for deleting after the procedure
$sReceiver->ack({ frame => $frame});
}
}
$sReceiver->unsubscribe({ destination => "/queue/$queue1"});
return "OK";
}
sub th2()
{
$aReceiver->subscribe({ destination => "/queue/$queue2",
'ack' => 'client',
'activemq.prefetchSize' => 1});
while($running)
{
#get one message from queue
if ($aReceiver->can_read({timeout=>'1'}))
{
my $frame = $aReceiver->receive_frame;
my $body = $frame->body;
#print "get message from queue 2: $body";
ptMsg($body);
$aReceiver->ack({ frame => $frame});
}
}
#when received cleanup message
$aReceiver->unsubscribe({ destination => "/queue/$queue2"});
return "OK";
}
sub ptMsg
{
my $msg = shift;
print "received message $msg \n";
}
#################################################################
# main function start
#################################################################
print ".Creating ActiveMQ connector ...... ";
$sReceiver = Net::Stomp->new({ hostname => $aq_host, port => $aq_port});
$sReceiver->connect();
$aReceiver = Net::Stomp->new({ hostname => $aq_host, port => $aq_port});
$aReceiver->connect();
print colored ("OK\n",'green');
$SIG{INT} = "cleanup";
print ".Starting Thread1 ...... ";
$thread_th1 = threads->create(\&th1);
print colored ("OK\n", 'green');
print ".Starting Thread2 ...... ";
$thread_th2 = threads->create(\&th2);
print colored ("OK\n", 'green');
#main process waiting for signal clean
print colored ("->running ......\n", 'green');
print "\n";
while ($running) {
usleep(5000000);
}
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