msghdr.h

T-kernel 的extension源代码

/*
 *----------------------------------------------------------------------
 *    T-Kernel / Standard Extension
 *
 *    Copyright (C) 2006 by Ken Sakamura. All rights reserved.
 *    T-Kernel / Standard Extension is distributed 
 *      under the T-License for T-Kernel / Standard Extension.
 *----------------------------------------------------------------------
 *
 *    Version:   1.00.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2006/8/11.
 *
 *----------------------------------------------------------------------
 */

/*
 *	msghdr.h
 *
 *	Message handler
 */

#ifndef __SYS_MSGHDR_H__
#define __SYS_MSGHDR_H__

#include <basic.h>
#include <sys/setjmp.h>

#ifdef __cplusplus
extern "C" {
#endif

#if defined(__GNUC__) && defined(__PIC__)
#    define	WEAK	__attribute__ ((weak))
#else
#    define	WEAK
#endif

#define	DefaultMessageSize	256	/* Default message reception size */
#define	N_MsgHandlers		31	/* Number of message handlers */

/* Message handler definitions */
IMPORT	FUNCP	_MsgHandlers[N_MsgHandlers] WEAK;

/* Return position of message handler */
IMPORT	jmp_buf	_MsgHdrJmpBuf WEAK;

#ifdef __cplusplus
}
#endif
#endif /* __SYS_MSGHDR_H__ */