after_exec       1205 process.c      #define after_fork_ruby() (rb_threadptr_pending_interrupt_clear(GET_THREAD()), after_exec())
after_exec       1318 process.c          preserving_errno(after_exec());
after_exec       1409 process.c      	after_exec();
after_exec       1447 process.c          after_exec();
after_exec       2582 process.c          after_exec(); /* restart timer thread */