diff options
Diffstat (limited to 'actionpack')
| -rw-r--r-- | actionpack/lib/action_dispatch/middleware/debug_locks.rb | 14 | ||||
| -rw-r--r-- | actionpack/test/dispatch/debug_locks_test.rb | 38 |
2 files changed, 45 insertions, 7 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/debug_locks.rb b/actionpack/lib/action_dispatch/middleware/debug_locks.rb index c61a941010..03760438f7 100644 --- a/actionpack/lib/action_dispatch/middleware/debug_locks.rb +++ b/actionpack/lib/action_dispatch/middleware/debug_locks.rb @@ -43,7 +43,7 @@ module ActionDispatch private def render_details(req) - threads = ActiveSupport::Dependencies.interlock.raw_state do |threads| + threads = ActiveSupport::Dependencies.interlock.raw_state do |raw_threads| # The Interlock itself comes to a complete halt as long as this block # is executing. That gives us a more consistent picture of everything, # but creates a pretty strong Observer Effect. @@ -53,29 +53,29 @@ module ActionDispatch # strictly diagnostic tool (to be used when something has gone wrong), # and not for any sort of general monitoring. - threads.each.with_index do |(thread, info), idx| + raw_threads.each.with_index do |(thread, info), idx| info[:index] = idx info[:backtrace] = thread.backtrace end - threads + raw_threads end str = threads.map do |thread, info| if info[:exclusive] - lock_state = "Exclusive" + lock_state = "Exclusive".dup elsif info[:sharing] > 0 - lock_state = "Sharing" + lock_state = "Sharing".dup lock_state << " x#{info[:sharing]}" if info[:sharing] > 1 else - lock_state = "No lock" + lock_state = "No lock".dup end if info[:waiting] lock_state << " (yielded share)" end - msg = "Thread #{info[:index]} [0x#{thread.__id__.to_s(16)} #{thread.status || 'dead'}] #{lock_state}\n" + msg = "Thread #{info[:index]} [0x#{thread.__id__.to_s(16)} #{thread.status || 'dead'}] #{lock_state}\n".dup if info[:sleeper] msg << " Waiting in #{info[:sleeper]}" diff --git a/actionpack/test/dispatch/debug_locks_test.rb b/actionpack/test/dispatch/debug_locks_test.rb new file mode 100644 index 0000000000..d69614bd79 --- /dev/null +++ b/actionpack/test/dispatch/debug_locks_test.rb @@ -0,0 +1,38 @@ +# frozen_string_literal: true + +require "abstract_unit" + +class DebugLocksTest < ActionDispatch::IntegrationTest + setup do + build_app + end + + def test_render_threads_status + thread_ready = Concurrent::CountDownLatch.new + test_terminated = Concurrent::CountDownLatch.new + + thread = Thread.new do + ActiveSupport::Dependencies.interlock.running do + thread_ready.count_down + test_terminated.wait + end + end + + thread_ready.wait + + get "/rails/locks" + + test_terminated.count_down + + assert_match(/Thread.*?Sharing/, @response.body) + ensure + thread.join + end + + private + def build_app + @app = self.class.build_app do |middleware| + middleware.use ActionDispatch::DebugLocks + end + end +end |