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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [itron/] [include/] [itronsys/] [mbox.h] - Rev 484
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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: mbox.h,v 1.2 2001-09-27 11:59:12 chris Exp $ */ #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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