sm_defs.h

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/*************************************************************************/
/*                                                                       */
/*               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       */
/*                                                                       */
/*      sm_defs.h                                      Nucleus PLUS 1.15 */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      SM - Semaphore Management                                        */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains data structure definitions and constants for  */
/*      the Semaphore component.                                         */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      SM_SCB                              Semaphore control block      */
/*      SM_SUSPEND                          Semaphore 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 SM_DEFS
#define SM_DEFS


/* Define constants local to this component.  */

#define         SM_SEMAPHORE_ID         0x53454d41UL


/* Define the Semaphore Control Block data type.  */

typedef struct SM_SCB_STRUCT 
{
    CS_NODE             sm_created;            /* Node for linking to    */
                                               /* created semaphore list */
    UNSIGNED            sm_id;                 /* Internal SCB ID        */
    CHAR                sm_name[NU_MAX_NAME];  /* Semaphore name         */
    UNSIGNED            sm_semaphore_count;    /* Counting semaphore     */
    BOOLEAN             sm_fifo_suspend;       /* Suspension type flag   */
#if     PAD_1
    DATA_ELEMENT        sm_padding[PAD_1];
#endif
    UNSIGNED            sm_tasks_waiting;      /* Number of waiting tasks*/
    struct SM_SUSPEND_STRUCT
                       *sm_suspension_list;    /* Suspension list        */
} SM_SCB;    


/* Define the semaphore suspension structure.  This structure is allocated 
   off of the caller's stack.  */
   
typedef struct SM_SUSPEND_STRUCT
{
    CS_NODE             sm_suspend_link;       /* Link to suspend blocks */
    SM_SCB             *sm_semaphore;          /* Pointer to semaphore   */
    TC_TCB             *sm_suspended_task;     /* Task suspended         */
    STATUS              sm_return_status;      /* Return status          */
} SM_SUSPEND;

#endif