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/*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#ifndef __ITRON_MBOX_h_
#define __ITRON_MBOX_h_
#ifdef __cplusplus
extern "C" {
#endif
/*
* Create Mailbox (cre_mbx) Structure
*/
typedef struct t_cmbx {
VP exinf; /* extended information */
ATR mbxatr; /* mailbox attributes */
/* Following is implementation-dependent function */
INT bufcnt; /* maximum number of messages to let pend */
/* additional information may be included depending on the implementation */
} T_CMBX;
/*
* mbxatr
*/
#define TA_TFIFO 0x00 /* waiting tasks are handled by FIFO */
#define TA_TPRI 0x01 /* waiting tasks are handled by priority */
#define TA_MFIFO 0x00 /* messages are handled by FIFO */
#define TA_MPRI 0x02 /* messages are handled by priority */
typedef struct t_msg {
/*
* A region (header) reserved by the OS may be included first
* depending on the implementation.
*
* NOTE: The first two fields are RTEMS specific.
*/
INT msgpri; /* priority of each message */
/* VB msgcont[]; XXX */
unsigned8 msgcont[1];
} T_MSG;
/*
* Reference Mailbox (ref_mbx) Structure
*/
typedef struct t_rmbx {
VP exinf; /* extended information */
BOOL_ID wtsk; /* indicates whether or not there is a waiting task */
T_MSG *pk_msg; /* message to be sent next */
/* additional information may be included depending on the implementation */
} T_RMBX;
/*
* Mailbox Functions
*/
/*
* cre_mbx - Create Mailbox
*/
ER cre_mbx(
ID mbxid,
T_CMBX *pk_cmbx
);
/*
* del_mbx - Delete Mailbox
*/
ER del_mbx(
ID mbxid
);
/*
* snd_msg - Send Message to Mailbox
*/
ER snd_msg(
ID mbxid,
T_MSG *pk_msg
);
/*
* rcv_msg - Receive Message from Mailbox
*/
ER rcv_msg(
T_MSG **ppk_msg,
ID mbxid
);
/*
* prcv_msg - Poll and Receive Message from Mailbox
*/
ER prcv_msg(
T_MSG **ppk_msg,
ID mbxid
);
/*
* trcv_msg - Receive Message from Mailbox with Timeout
*/
ER trcv_msg(
T_MSG **ppk_msg,
ID mbxid,
TMO tmout
);
/*
* ref_mbx - Reference Mailbox Status
*/
ER ref_mbx(
T_RMBX *pk_rmbx,
ID mbxid
);
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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