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With forks (*nix), when you have multiple processes all waiting to accept on a shared socket, when a client connects, *every* listening process receives the connect.
That would be horrible, but fortunately it's not true. If multiple processes waiting for a connection on the same socket, when client connects, *only one* listening process accepts connection. Here's a simple example that demonstrates it:
use 5.010; use strict; use warnings; use IO::Socket::INET; my $sock = IO::Socket::INET->new(LocalPort => 7777, Listen => 10); for (1..3) { my $pid = fork; unless($pid) { my $cli = $sock->accept; say "Process $$ accepted connection from " . $cli->peerport; print while <$cli>; exit 0; } }
Try to connect to 7777 and you will see that only one process will accept connection. Hence there's no need to have any global mutexes.

In reply to Re^6: Help designing a threaded service by zwon
in thread Help designing a threaded service by Tommy

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