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5.7

    1: 
    2: /*
    3:  * msg.h
    4:  *
    5:  * Written by Archie Cobbs <archie@freebsd.org>
    6:  * Copyright (c) 1995-1999 Whistle Communications, Inc. All rights reserved.
    7:  * See ``COPYRIGHT.whistle''
    8:  */
    9: 
   10: #ifndef _MSG_H_
   11: #define _MSG_H_
   12: 
   13: /*
   14:  * DEFINITIONS
   15:  */
   16: 
   17: /* Messages you can send to a link or a bundle */
   18: 
   19:   #define MSG_OPEN		1	/* Bring yourself up */
   20:   #define MSG_CLOSE		2	/* Bring yourself down */
   21:   #define MSG_UP		3	/* Lower layer went up */
   22:   #define MSG_DOWN		4	/* Lower layer went down */
   23:   #define MSG_SHUTDOWN		5	/* Object should disappear */
   24: 
   25: #ifndef SMALL_SYSTEM
   26:   #define MSG_QUEUE_LEN		8192	/* Internal messages queue length */
   27:   #define MSG_QUEUE_MASK	0x1FFF	/* Mask for this length */
   28: #else
   29:   #define MSG_QUEUE_LEN		512
   30:   #define MSG_QUEUE_MASK	0x1FF
   31: #endif
   32: 
   33: /*
   34:  * GLOBAL VARIABLES
   35:  */
   36: 
   37:   extern int	gQThresMin, gQThresMax, gQThresDiff;
   38: 
   39: /* Forward decl */
   40: 
   41:   struct msghandler
   42:   {
   43:     void	(*func)(int type, void *arg);
   44:     const char	*dbg;
   45:   };
   46: 
   47:   typedef struct msghandler	MsgHandler;
   48: 
   49: /*
   50:  * FUNCTIONS
   51:  */
   52: 
   53: #define	MsgRegister(m, func)	\
   54: 	    MsgRegister2(m, func, #func "()")
   55:   extern void		MsgRegister2(MsgHandler *m, void (*func)(int typ, void *arg), const char *dbg);
   56:   extern void		MsgUnRegister(MsgHandler *m);
   57:   extern void		MsgSend(MsgHandler *m, int type, void *arg);
   58:   extern const char	*MsgName(int msg);
   59: 
   60: #endif
   61: