From 2c83b74f2709191fd1ef2e2ed166e465c5e6a26d Mon Sep 17 00:00:00 2001
From: Mike Perham <mperham@gmail.com>
Date: Wed, 15 Feb 2012 12:30:31 -0800
Subject: [PATCH] Process.pid does not work on Heroku, #22

---
 lib/sidekiq/manager.rb   |  4 +---
 lib/sidekiq/processor.rb |  2 +-
 lib/sidekiq/util.rb      | 16 ++++++++++++++++
 3 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/lib/sidekiq/manager.rb b/lib/sidekiq/manager.rb
index c4b6786a..8dbf421c 100644
--- a/lib/sidekiq/manager.rb
+++ b/lib/sidekiq/manager.rb
@@ -45,10 +45,8 @@ module Sidekiq
 
       redis.with_connection do |conn|
         workers = conn.smembers('workers')
-        logger.info "My tag: ':#{Process.pid}-'"
-        logger.info "Current workers: #{workers.inspect}"
         workers.each do |name|
-          conn.srem('workers', name) if name =~ /:#{Process.pid}-/
+          conn.srem('workers', name) if name =~ /:#{process_id}-/
         end
       end
     end
diff --git a/lib/sidekiq/processor.rb b/lib/sidekiq/processor.rb
index 1e896b30..7ab15d46 100644
--- a/lib/sidekiq/processor.rb
+++ b/lib/sidekiq/processor.rb
@@ -47,7 +47,7 @@ module Sidekiq
     end
 
     def to_s
-      @str ||= "#{hostname}:#{Process.pid}-#{Thread.current.object_id}:default"
+      @str ||= "#{hostname}:#{process_id}-#{Thread.current.object_id}:default"
     end
 
     private
diff --git a/lib/sidekiq/util.rb b/lib/sidekiq/util.rb
index 2ecbf904..3617edce 100644
--- a/lib/sidekiq/util.rb
+++ b/lib/sidekiq/util.rb
@@ -41,5 +41,21 @@ module Sidekiq
     def redis
       Sidekiq::Manager.redis
     end
+
+    def process_id
+      Sidekiq::Util.process_id
+    end
+
+    def self.process_id
+      @pid ||= begin
+        if Process.pid == 1
+          # Heroku does not expose pids.
+          require 'securerandom'
+          (SecureRandom.random_number * 4_000_000_000).floor.to_s(16)
+        else
+          Process.pid
+        end
+      end
+    end
   end
 end