Dear Monks, This problem has been my headache for two weeks. Can anyone help me? Thanks a lot! 
use threads;
use SOCKETSVR::Server;

my $port = 5188;
my $d = new SOCKETSVR::Server
      LocalPort => $port;
print "Socket Server started. port=$port\r\n";
while (my $conn = $d->accept) {
        # $conn is socket client handler, which is GLOBtype
        threads->new(\&start_process, $conn)->detach();
        undef($conn);
}

sub start_process
{
  my $conn=shift;
  if(my $r = $conn->recv_data) {
    #blabla....
  }
  $conn->close;
  return;
}

[download]

This program will create a thread for any socket client connection. But I found the memory is increasing rapidly, and the program will crash after have run for about 3 days.

In the past weeks, I tried a lot of solutions for this problem:

1. I updated Perl from v5.8.8 to v5.10.1, and threads from v1.0.7 to v1.7.5 ----It didn't work.

2. I used Thread::Pool module to avoid massive threads open and close, which might have caused memory leak. ---It prompted error: Can't store GLOB items at lib/Storable.pm. That's because $conn above is GLOB value

3. I tried to transfer fileno($conn) between threads and re-construct socket client by  open my $conn, "+<&=$fno"; ---It didn't work. fileno($conn) always returns 9 and socket client can't be re-opened.

4. I used some other threadpool module ---They didn't work for $conn cannot be shared. it's not a simple data structure.

So after so many tries, I still cannot make it. Can any Monk help me? Thanks!

In reply to Perl threads memory leak with socket and solutions I tried... by ilxl

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