/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ typedef struct Queue Queue;#pragma incomplete QueueQueue *_vtqalloc(void);int _vtqsend(Queue*, void*);void *_vtqrecv(Queue*);void _vtqhangup(Queue*);void *_vtnbqrecv(Queue*);void _vtqdecref(Queue*);Queue *_vtqincref(Queue*);