rb_thread_create  458 ext/pty/pty.c      thinfo.thread = rb_thread_create(pty_syswait, (void*)&info);
rb_thread_create 2265 ext/tk/tcltklib.c             evloop = rb_thread_create(watchdog_evloop_launcher, 
rb_thread_create 2415 ext/tk/tcltklib.c     th = rb_thread_create(_thread_call_proc, (void*)q);
rb_thread_create  326 include/ruby/intern.h VALUE rb_thread_create(VALUE (*)(ANYARGS), void*);
rb_thread_create  906 process.c          VALUE watcher = rb_thread_create(detach_process_watcher, (void*)(VALUE)pid);