reduce constant lookup dependencies

Unicorn 5 removes some constants we were using, and constant
lookups + inline caching are waste of time anyways on newer
Rubies with the opt_str_freeze bytecode instruction.

This may reduce performance for folks on older Rubies (probably
not noticeable); but improves performance for folks on newer
Rubies.

2 files changed, 7 insertions, 10 deletions

diff --git a/lib/rainbows/event_machine/client.rb b/lib/rainbows/event_machine/client.rb
index 9871c09..7fb88f6 100644
--- a/lib/rainbows/event_machine/client.rb
+++ b/lib/rainbows/event_machine/client.rb
@@ -23,7 +23,7 @@ class Rainbows::EventMachine::Client < EM::Connection
       end
       EM.next_tick { receive_data(nil) } unless @buf.empty?
     else
-      on_read(data || Z) if (@buf.size > 0) || data
+      on_read(data || ''.freeze) if (@buf.size > 0) || data
     end
   end
 
@@ -34,10 +34,10 @@ class Rainbows::EventMachine::Client < EM::Connection
 
   def app_call input
     set_comm_inactivity_timeout 0
-    @env[RACK_INPUT] = input
-    @env[REMOTE_ADDR] = @_io.kgio_addr
-    @env[ASYNC_CALLBACK] = method(:write_async_response)
-    @env[ASYNC_CLOSE] = EM::DefaultDeferrable.new
+    @env['rack.input'] = input
+    @env['REMOTE_ADDR'] = @_io.kgio_addr
+    @env['async.callback'] = method(:write_async_response)
+    @env['async.close'] = EM::DefaultDeferrable.new
     @hp.hijack_setup(@env, @_io)
     status, headers, body = catch(:async) {
       APP.call(@env.merge!(RACK_DEFAULTS))
@@ -117,7 +117,7 @@ class Rainbows::EventMachine::Client < EM::Connection
 
   def unbind
     return if @hp.hijacked?
-    async_close = @env[ASYNC_CLOSE] and async_close.succeed
+    async_close = @env['async.close'] and async_close.succeed
     @deferred.respond_to?(:fail) and @deferred.fail
     begin
       @_io.close
diff --git a/lib/rainbows/event_machine/try_defer.rb b/lib/rainbows/event_machine/try_defer.rb
index 615adae..778f3d0 100644
--- a/lib/rainbows/event_machine/try_defer.rb
+++ b/lib/rainbows/event_machine/try_defer.rb
@@ -10,9 +10,6 @@
 # See http://brainspl.at/articles/2008/04/18/deferred-requests-with-merb-ebb-and-thin
 # for more information.
 class Rainbows::EventMachine::TryDefer
-  # shortcuts
-  ASYNC_CALLBACK = Rainbows::EvCore::ASYNC_CALLBACK # :nodoc:
-
   def initialize(app) # :nodoc:
     # the entire app becomes multithreaded, even the root (non-deferred)
     # thread since any thread can share processes with others
@@ -22,7 +19,7 @@ class Rainbows::EventMachine::TryDefer
 
   def call(env) # :nodoc:
     if @app.deferred?(env)
-      EM.defer(proc { catch(:async) { @app.call(env) } }, env[ASYNC_CALLBACK])
+      EM.defer(proc { catch(:async) { @app.call(env) } }, env['async.callback'])
       # all of the async/deferred stuff breaks Rack::Lint :<
       nil
     else