www.pudn.com > os.rar > mb_defs.h

/*************************************************************************/ 
/*                                                                       */ 
/*               Copyright Mentor Graphics Corporation 2004              */ 
/*                         All Rights Reserved.                          */ 
/*                                                                       */ 
/* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS  */ 
/* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS   */ 
/* SUBJECT TO LICENSE TERMS.                                             */ 
/*                                                                       */ 
/*************************************************************************/ 
 
/*************************************************************************/ 
/*                                                                       */ 
/* FILE NAME                                               VERSION       */ 
/*                                                                       */ 
/*      mb_defs.h                                      Nucleus PLUS 1.15 */ 
/*                                                                       */ 
/* COMPONENT                                                             */ 
/*                                                                       */ 
/*      MB - Mailbox Management                                          */ 
/*                                                                       */ 
/* DESCRIPTION                                                           */ 
/*                                                                       */ 
/*      This file contains data structure definitions and constants for  */ 
/*      the message Mailbox component.                                   */ 
/*                                                                       */ 
/* DATA STRUCTURES                                                       */ 
/*                                                                       */ 
/*      MB_MCB                              Mailbox control block        */ 
/*      MB_SUSPEND                          Mailbox suspension block     */ 
/*                                                                       */ 
/* DEPENDENCIES                                                          */ 
/*                                                                       */ 
/*      cs_defs.h                           Common service definitions   */ 
/*      tc_defs.h                           Thread Control definitions   */ 
/*                                                                       */ 
/*************************************************************************/ 
 
#include        "plus/inc/cs_defs.h"        /* Common service constants  */ 
#include        "plus/inc/tc_defs.h"        /* Thread control constants  */ 
 
 
/* Check to see if the file has been included already.  */ 
 
#ifndef MB_DEFS 
#define MB_DEFS 
 
 
/* Define constants local to this component.  */ 
 
#define         MB_MAILBOX_ID           0x4d424f58UL 
#define         MB_MESSAGE_SIZE         4 
 
 
/* Define the Mailbox Control Block data type.  */ 
 
typedef struct MB_MCB_STRUCT  
{ 
    CS_NODE             mb_created;            /* Node for linking to    */ 
                                               /*   created mailbox list */ 
    UNSIGNED            mb_id;                 /* Internal MCB ID        */ 
    CHAR                mb_name[NU_MAX_NAME];  /* Mailbox name           */ 
    BOOLEAN             mb_message_present;    /* Message present flag   */ 
    BOOLEAN             mb_fifo_suspend;       /* Suspension type flag   */ 
#if     PAD_2 
    DATA_ELEMENT        mb_padding[PAD_2]; 
#endif 
    UNSIGNED            mb_tasks_waiting;      /* Number of waiting tasks*/ 
    UNSIGNED                                   /* Message area           */ 
                        mb_message_area[MB_MESSAGE_SIZE]; 
    struct MB_SUSPEND_STRUCT 
                       *mb_suspension_list;    /* Suspension list        */ 
} MB_MCB;     
 
 
/* Define the mailbox suspension structure.  This structure is allocated off of 
   the caller's stack.  */ 
    
typedef struct MB_SUSPEND_STRUCT 
{ 
    CS_NODE             mb_suspend_link;       /* Link to suspend blocks */ 
    MB_MCB             *mb_mailbox;            /* Pointer to the mailbox */ 
    TC_TCB             *mb_suspended_task;     /* Task suspended         */ 
    UNSIGNED           *mb_message_area;       /* Pointer to message area*/ 
    STATUS              mb_return_status;      /* Return status          */ 
} MB_SUSPEND; 
 
#endif