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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [itron/] [include/] [itronsys/] [msgbuffer.h] - Blame information for rev 173

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/*
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: msgbuffer.h,v 1.2 2001-09-27 11:59:12 chris Exp $
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 */
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#ifndef __ITRON_MESSAGEBUFFER_h_
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#define __ITRON_MESSAGEBUFFER_h_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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 *  Create Message Buffer (cre_mbf) Structure
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 */
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typedef struct t_cmbf {
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  VP    exinf;    /* extended information */
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  ATR   mbfatr;   /* messagebuffer attributes */
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  INT   bufsz;    /* messagebuffer size */
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  INT   maxmsz;   /* maximum size of messages */
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  /* additional information may be included depending on the implementation */
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} T_CMBF;
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/*
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 *  mbfatr
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 */
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#define TA_TFIFO   0x00   /* tasks waiting to receive messages are handled
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                                 by FIFO */
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#define TA_TPRI    0x01   /* tasks waiting to receive messages are handled
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                                 by priority */
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/*
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 *  mbfid
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 */
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#define TMBF_OS   (-4)   /* messagebuffer used for OS error log */
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#define TMBF_DB   (-3)   /* messagebuffer used for debugging */
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/*
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 *  Reference Message Buffer (ref_mbf) Structure
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 */
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typedef struct t_rmbf {
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  VP        exinf;     /* extended information */
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  BOOL_ID   wtsk;      /* indicates whether or not there is a */
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                       /* task waiting to receive a message */
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  BOOL_ID   stsk;      /* indicates whether or not there is a */
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                       /* task waiting to send a message */
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  INT       msgsz;     /* size of message to be sent next */
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  INT       frbufsz;   /* size of free buffer */
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  /* additional information may be included depending on the implementation */
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} T_RMBF;
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/*
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 *  Message Buffer Functions
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 */
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/*
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 *  cre_mbf - Create MessageBuffer
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 */
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ER cre_mbf(
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  ID mbfid,
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  T_CMBF *pk_cmbf
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);
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/*
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 *  del_mbf - Delete MessageBuffer
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 */
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ER del_mbf(
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  ID mbfid
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);
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/*
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 *  snd_mbf - Send Message to MessageBuffer
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 */
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ER snd_mbf(
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  ID mbfid,
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  VP msg,
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  INT msgsz
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);
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/*
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 *  psnd_mbf - Poll and Send Message to MessageBuffer
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 */
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ER psnd_mbf(
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  ID mbfid,
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  VP msg,
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  INT msgsz
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);
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/*
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 *  tsnd_mbf - Send Message to MessageBuffer with Timeout
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 */
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ER tsnd_mbf(
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  ID mbfid,
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  VP msg,
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  INT msgsz,
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  TMO tmout
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);
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/*
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 *  rcv_mbf - Receive Message from MessageBuffer
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 */
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ER rcv_mbf(
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  VP msg,
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  INT *p_msgsz,
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  ID mbfid
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);
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/*
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 *  prcv_mbf - Poll and Receive Message from MessageBuffer
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 */
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ER prcv_mbf(
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  VP msg,
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  INT *p_msgsz,
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  ID mbfid
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);
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/*
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 *  trcv_mbf - Receive Message from MessageBuffer with Timeout
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 */
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ER trcv_mbf(
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  VP msg,
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  INT *p_msgsz,
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  ID mbfid,
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  TMO tmout
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);
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/*
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 *  ref_mbf - Reference MessageBuffer Status
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 */
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ER ref_mbf(
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  T_RMBF *pk_rmbf,
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  ID mbfid
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);
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#ifdef __cplusplus
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}
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#endif
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#endif
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/* end of include file */
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