Fixes #38961 - Puma freezes on code reload in dev

app/lib/katello/event_daemon/monitor.rb

@@ -7,15 +7,15 @@ def initialize(services)
         @services.keys.each do |service_name|
           @service_statuses[service_name] = { running: 'starting' }
         end
+        write_statuses_to_cache
       end
 
       def start
-        write_statuses_to_cache
-        loop do
-          Rails.application.executor.wrap do
+        ActiveSupport::Dependencies.interlock.permit_concurrent_loads do
+          loop do
             check_services
+            sleep 5
           end
-          sleep 15
         end
       end
 

app/lib/katello/event_daemon/runner.rb

@@ -58,6 +58,7 @@ def start
           File.open(lock_file, 'r') do |lockfile|
             lockfile.flock(File::LOCK_EX)
             return nil if started? # ensure it wasn't started while we waited for the lock
+            @monitor = Katello::EventDaemon::Monitor.new(@services)
             start_monitor_thread
             write_pid_file
 
@@ -81,7 +82,7 @@ def started?
         def start_monitor_thread
           @monitor_thread = Thread.new do
             Rails.application.executor.wrap do
-              Katello::EventDaemon::Monitor.new(@services).start
+              @monitor.start
             end
           end
         end