Make users buffer fully thread-safe

Under intense threading usage, the `@@users` buffer will not be thread-safe fully. Details here: ref ruby-concurrency/concurrent-ruby#970
mensfeld · Nov 21, 2022 · 67a92c1 · 67a92c1
1 parent 384a0e5
commit 67a92c1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/www/board/agenda/daemon/channel.rb b/www/board/agenda/daemon/channel.rb
@@ -15,7 +15,7 @@
 
 class Channel
   @@sockets = Concurrent::Map.new
-  @@users = Concurrent::Map.new {|map,key| map[key]=[]}
+  @@users = Concurrent::Map.new {|map,key| map.compute_if_absent(key) { [] } }
 
   begin
     FOUNDATION_BOARD = ASF::SVN['foundation_board']