Issue #3939 has been updated by Usaku NAKAMURA. Category changed from core to ext Status changed from Open to Assigned Assigned to set to Masaki Suketa I've changed thread_win32.c now. Suketa-san, if you want to follow these experimental changes, do it. If not, reject this ticket. ---------------------------------------- http://redmine.ruby-lang.org/issues/show/3939 ---------------------------------------- http://redmine.ruby-lang.org