From 86b7d9718d7399d04e0aa30cf4eaa4d3c0785092 Mon Sep 17 00:00:00 2001
From: Evan Phoenix <evan@fallingsnow.net>
Date: Thu, 11 Jul 2013 11:46:18 -0700
Subject: [PATCH] Detect when the jruby daemon child doesn't start properly

---
 lib/puma/single.rb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/puma/single.rb b/lib/puma/single.rb
index 2ba4dff2..1486583d 100644
--- a/lib/puma/single.rb
+++ b/lib/puma/single.rb
@@ -55,6 +55,11 @@ module Puma
             exit
           end
 
+          Signal.trap "SIGCHLD" do
+            log "! Error starting new process as daemon, exitting"
+            exit 1
+          end
+
           pid = @cli.jruby_daemon_start
           sleep
         end