Merge branch 'osw-use-atomic-reference-instead-atomic-fixnum' into 'master'

Use Concurrent::AtomicReference instead AtomicFixnum

Closes #41448

See merge request gitlab-org/gitlab-ce!16138

changelogs/unreleased/osw-use-atomic-reference-instead-atomic-fixnum.yml

+---
+title: Adjust failure when starting GitLab instance on x86 systems
+merge_request:
+author: Mike Limansky
+type: fixed

lib/gitlab/metrics/method_call.rb

@@ -5,7 +5,7 @@ module Gitlab
     # Class for tracking timing information about method calls
     class MethodCall
       @@measurement_enabled_cache = Concurrent::AtomicBoolean.new(false)
-      @@measurement_enabled_cache_expires_at = Concurrent::AtomicFixnum.new(Time.now.to_i)
+      @@measurement_enabled_cache_expires_at = Concurrent::AtomicReference.new(Time.now.to_i)
       MUTEX = Mutex.new
       BASE_LABELS = { module: nil, method: nil }.freeze
       attr_reader :real_time, :cpu_time, :call_count, :labels