epoll/client: avoid unnecessary Epoll#set calls

We should only attempt to modify the descriptor when we
block, and not for subsequent events.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/rainbows/epoll/client.rb b/lib/rainbows/epoll/client.rb
index 2e45b26..a8eacab 100644
--- a/lib/rainbows/epoll/client.rb
+++ b/lib/rainbows/epoll/client.rb
@@ -147,11 +147,11 @@ module Rainbows::Epoll::Client
       when String
         buf = rv # retry
       when :wait_writable
-        break # queue
+        @wr_queue << buf.dup # >3-word 1.9 strings are copy-on-write
+        return EP.set(self, OUT)
       end while true
     end
     @wr_queue << buf.dup # >3-word 1.9 strings are copy-on-write
-    EP.set(self, OUT)
   end
 
   def close