tcb.txt

20080718μC_OS－Ⅱ实时嵌入式操作系统源代码

typedef struct os_tcb {
    OS_STK        *OSTCBStkPtr;        /* Pointer to current top of stack                              */

#if OS_TASK_CREATE_EXT_EN    
    void          *OSTCBExtPtr;        /* Pointer to user definable data for TCB extension             */
    OS_STK        *OSTCBStkBottom;     /* Pointer to bottom of stack                                   */
    INT32U         OSTCBStkSize;       /* Size of task stack (in bytes)                                */
    INT16U         OSTCBOpt;           /* Task options as passed by OSTaskCreateExt()                  */
    INT16U         OSTCBId;            /* Task ID (0..65535)                                           */
#endif

    struct os_tcb *OSTCBNext;          /* Pointer to next     TCB in the TCB list                      */
    struct os_tcb *OSTCBPrev;          /* Pointer to previous TCB in the TCB list                      */

#if (OS_Q_EN && (OS_MAX_QS >= 2)) || OS_MBOX_EN || OS_SEM_EN
    OS_EVENT      *OSTCBEventPtr;      /* Pointer to event control block                               */
#endif

#if (OS_Q_EN && (OS_MAX_QS >= 2)) || OS_MBOX_EN
    void          *OSTCBMsg;           /* Message received from OSMboxPost() or OSQPost()              */
#endif    

    INT16U         OSTCBDly;           /* Nbr ticks to delay task or, timeout waiting for event        */
    INT8U          OSTCBStat;          /* Task status                                                  */
    INT8U          OSTCBPrio;          /* Task priority (0 == highest, 63 == lowest)                   */

    INT8U          OSTCBX;             /* Bit position in group  corresponding to task priority (0..7) */
    INT8U          OSTCBY;             /* Index into ready table corresponding to task priority        */
    INT8U          OSTCBBitX;          /* Bit mask to access bit position in ready table               */
    INT8U          OSTCBBitY;          /* Bit mask to access bit position in ready group               */
    
#if OS_TASK_DEL_EN    
    BOOLEAN        OSTCBDelReq;        /* Indicates whether a task needs to delete itself              */
#endif
} OS_TCB;