PIPE_ASYNC        259 kern/sys_pipe.c 	if ((cpipe->pipe_state & PIPE_ASYNC) && cpipe->pipe_pgid != NO_PID)
PIPE_ASYNC        617 kern/sys_pipe.c 			mpipe->pipe_state |= PIPE_ASYNC;
PIPE_ASYNC        619 kern/sys_pipe.c 			mpipe->pipe_state &= ~PIPE_ASYNC;