From f966c279cfed64adefae7d220389b206e3abf3ca Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Mon, 3 Apr 2006 03:03:33 +0000
Subject: Fixed that spawner should daemonize if running in repeat mode [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4135 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 railties/lib/commands/process/spawner.rb | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'railties/lib/commands')

diff --git a/railties/lib/commands/process/spawner.rb b/railties/lib/commands/process/spawner.rb
index 47259979d6..c72a3dc489 100644
--- a/railties/lib/commands/process/spawner.rb
+++ b/railties/lib/commands/process/spawner.rb
@@ -1,6 +1,17 @@
 require 'optparse'
 require 'socket'
 
+def daemonize #:nodoc:
+  exit if fork                   # Parent exits, child continues.
+  Process.setsid                 # Become session leader.
+  exit if fork                   # Zap session leader. See [1].
+  Dir.chdir "/"                  # Release old working directory.
+  File.umask 0000                # Ensure sensible umask. Adjust as needed.
+  STDIN.reopen "/dev/null"       # Free file descriptors and
+  STDOUT.reopen "/dev/null", "a" # point them somewhere sensible.
+  STDERR.reopen STDOUT           # STDOUT/ERR should better go to a logfile.
+end
+
 def spawn(port)
   print "Checking if something is already running on port #{port}..."
   begin
@@ -71,10 +82,12 @@ end
 ENV["RAILS_ENV"] = OPTIONS[:environment]
 
 if OPTIONS[:repeat]
+  daemonize
+  trap("TERM") { exit }
+
   loop do
     spawn_all
-    puts "Sleeping for #{OPTIONS[:repeat]} seconds"
-    sleep OPTIONS[:repeat]
+    sleep(OPTIONS[:repeat])
   end
 else
   spawn_all
-- 
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