From: Tanaka Akira Date: 2013-07-10T10:14:02+09:00 Subject: [ruby-core:55893] Re: [ruby-trunk - Bug #8616][Open] Process.daemon messes up threads 2013/7/10 tenderlovemaking (Aaron Patterson) : > Bug #8616: Process.daemon messes up threads > https://bugs.ruby-lang.org/issues/8616 Process.daemon cannot preserve threads because it uses fork and fork doesn't copy other threads. Maybe, Process.daemon should raise an exception when multi threads.