ref.h

linux进程间高级通信的一个模块 是一个很不错的东西.

/*
 *	Fusion Kernel Module
 *
 *	(c) Copyright 2002-2003  Convergence GmbH
 *
 *      Written by Denis Oliver Kropp <[e-mail]>
 *
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License
 *	as published by the Free Software Foundation; either version
 *	2 of the License, or (at your option) any later version.
 */

#ifndef __FUSION__REF_H__
#define __FUSION__REF_H__

#include "fusiondev.h"
#include "types.h"


/* module init/cleanup */

int  fusion_ref_init   (FusionDev *dev);
void fusion_ref_deinit (FusionDev *dev);


/* public API */

int fusion_ref_new          (FusionDev      *dev,
                             int            *id);

int fusion_ref_up           (FusionDev      *dev,
                             int             id,
                             int             fusion_id);

int fusion_ref_down         (FusionDev      *dev,
                             int             id,
                             int             fusion_id);

int fusion_ref_zero_lock    (FusionDev      *dev,
                             int             id,
                             int             fusion_id);

int fusion_ref_zero_trylock (FusionDev      *dev,
                             int             id,
                             int             fusion_id);

int fusion_ref_unlock       (FusionDev      *dev,
                             int             id,
                             int             fusion_id);

int fusion_ref_stat         (FusionDev      *dev,
                             int             id,
                             int            *refs);

int fusion_ref_watch        (FusionDev      *dev,
                             int             id,
                             int             call_id,
                             int             call_arg);

int fusion_ref_inherit      (FusionDev      *dev,
                             int             id,
                             int             from);

int fusion_ref_destroy      (FusionDev      *dev,
                             int             id);


/* internal functions */

void fusion_ref_clear_all_local (FusionDev *dev,
                                 int        fusion_id);

#endif