Provide thread names whenever possible

Author: yuki24

lib/ldclient-rb/events.rb

@@ -253,7 +253,7 @@ def initialize(inbox, sdk_key, config, diagnostic_accumulator, event_sender)
         diagnostic_event_workers = nil
       end
 
-      Thread.new { main_loop(inbox, outbox, flush_workers, diagnostic_event_workers) }
+      Thread.new { main_loop(inbox, outbox, flush_workers, diagnostic_event_workers) }.name = "LD/EventDispatcher#main_loop"
     end
 
     private

lib/ldclient-rb/impl/integrations/file_data_source.rb

@@ -216,6 +216,7 @@ def initialize(resolved_paths, interval, reloader, logger)
                 end
               end
             end
+            @thread.name = "LD/Impl/Integrations/FileDataSourceImpl/FileDataSourcePoller"
           end
 
           def stop

lib/ldclient-rb/impl/migrations/migrator.rb

@@ -188,6 +188,9 @@ def write(key, context, default_stage, payload = nil)
             auth_handler = Thread.new { authoritative_result = authoritative.run }
             nonauth_handler = Thread.new { nonauthoritative_result = nonauthoritative.run }
 
+            auth_handler.name = "LD/Impl/Migrations/Migrator/auth_handler"
+            nonauth_handler.name = "LD/Impl/Migrations/Migrator/nonauth_handler"
+
             auth_handler.join()
             nonauth_handler.join()
           when LaunchDarkly::Migrations::MigratorBuilder::EXECUTION_RANDOM && @sampler.sample(2)

lib/ldclient-rb/impl/repeating_task.rb

@@ -30,6 +30,8 @@ def start
               sleep(delta)
             end
           end
+        end.tap do |worker|
+          worker.name = "LD/Impl/RepeatingTask"
         end
       end
 

lib/ldclient-rb/non_blocking_thread_pool.rb

@@ -10,7 +10,7 @@ module LaunchDarkly
   class NonBlockingThreadPool
     def initialize(capacity)
       @capacity = capacity
-      @pool = Concurrent::FixedThreadPool.new(capacity)
+      @pool = Concurrent::FixedThreadPool.new(capacity, name: "LD/NonBlockingThreadPool")
       @semaphore = Concurrent::Semaphore.new(capacity)
     end