From 26cf849f020034fdbfc6020d3e2930103e8ece08 Mon Sep 17 00:00:00 2001
From: Guillaume Truchot <guillaume.truchot@outlook.com>
Date: Thu, 12 Mar 2020 15:22:29 +0100
Subject: [PATCH] Fix out_of_band hook never executed when multiple worker
 threads (closes #2177)

---
 History.md         | 1 +
 lib/puma/server.rb | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/History.md b/History.md
index 2fab78af9a..667ff59a91 100644
--- a/History.md
+++ b/History.md
@@ -24,6 +24,7 @@
   * Rescue IO::WaitReadable instead of EAGAIN for blocking read (#2121)
   * Ensure `BUNDLE_GEMFILE` is unspecified in workers if unspecified in master when using `prune_bundler` (#2154)
   * Rescue and log exceptions in hooks defined by users (on_worker_boot, after_worker_fork etc) (#1551)
+  * Fix `out_of_band` hook never executed if the number of worker threads is > 1 (#2177)
   
 * Refactor
   * Remove unused loader argument from Plugin initializer (#2095)
diff --git a/lib/puma/server.rb b/lib/puma/server.rb
index fc5e24fd55..126ca30023 100644
--- a/lib/puma/server.rb
+++ b/lib/puma/server.rb
@@ -291,7 +291,7 @@ def handle_servers
 
                     pool << client
                     busy_threads = pool.wait_until_not_full
-                    if busy_threads == 0
+                    if busy_threads < @max_threads
                       @options[:out_of_band].each(&:call) if @options[:out_of_band]
                     end
                   end