Ruby » Backport87

    safe_mutex_lock(&time_thread.lock);

    if (pthread_create(&time_thread.thread, 0, thread_timer, args) == 0) {

	thread_init = 1;

	pthread_atfork(0, 0, rb_thread_stop_timer);

#endif

	pthread_cond_wait(&start, &time_thread.lock);

    }

  retry:

    rb_thread_stop_timer();

#endif

    switch ((pid = fork())) {

		    ruby_sourcefile, ruby_sourceline, pname);

	    _exit(127);

	}

	rb_thread_start_timer();

#endif

	rb_io_synchronized(RFILE(orig_stdout)->fptr);

	return Qnil;

      case -1:			/* fork failed */

	rb_thread_start_timer();

#endif

	if (errno == EAGAIN) {

	break;

      default:			/* parent */

	rb_thread_start_timer();

#endif

	if (pid < 0) rb_sys_fail(pname);

    fflush(stderr);

#endif

    before_exec();

    pid = fork();

    after_exec();

    chfunc = signal(SIGCHLD, SIG_DFL);

  retry:

    before_exec();

#endif

    pid = fork();

	rb_protect(proc_exec_args, (VALUE)&earg, NULL);

	_exit(127);

    }

    after_exec();

#endif

    if (pid < 0) {