remove 1.8, <= 1.9.1 fallback for missing IO#autoclose=

We're requiring Ruby 1.9.3+, so we can safely depend
on IO#autoclose= being available in 1.9+ and shave off
some bloat.

1 files changed, 1 insertions, 13 deletions

diff --git a/lib/unicorn/socket_helper.rb b/lib/unicorn/socket_helper.rb
index 2ecf438..a4247ac 100644
--- a/lib/unicorn/socket_helper.rb
+++ b/lib/unicorn/socket_helper.rb
@@ -5,10 +5,6 @@ require 'socket'
 module Unicorn
   module SocketHelper
 
-    # prevents IO objects in here from being GC-ed
-    # kill this when we drop 1.8 support
-    IO_PURGATORY = []
-
     # internal interface, only used by Rainbows!/Zbatery
     DEFAULTS = {
       # The semantics for TCP_DEFER_ACCEPT changed in Linux 2.6.32+
@@ -36,14 +32,6 @@ module Unicorn
       [ af_name, nil ].pack('a16a240')
     end if RUBY_PLATFORM =~ /freebsd/ && Socket.const_defined?(:SO_ACCEPTFILTER)
 
-    def prevent_autoclose(io)
-      if io.respond_to?(:autoclose=)
-        io.autoclose = false
-      else
-        IO_PURGATORY << io
-      end
-    end
-
     def set_tcp_sockopt(sock, opt)
       # just in case, even LANs can break sometimes.  Linux sysadmins
       # can lower net.ipv4.tcp_keepalive_* sysctl knobs to very low values.
@@ -161,7 +149,7 @@ module Unicorn
         sock.setsockopt(:SOL_SOCKET, :SO_REUSEPORT, 1)
       end
       sock.bind(Socket.pack_sockaddr_in(port, addr))
-      prevent_autoclose(sock)
+      sock.autoclose = false
       Kgio::TCPServer.for_fd(sock.fileno)
     end