ThreadX互斥信号量结构体中的tx_mutex_owned_next用于统计此任务拥有的信号量链表

eric2013

有时候一个任务可以有多互斥信号量，可以使用这个建立链表。   

[C] 纯文本查看 复制代码

 /* Define the owned list next and previous pointers.  */
    struct TX_MUTEX_STRUCT
                        *tx_mutex_owned_next,
                        *tx_mutex_owned_previous;

而tx_mutex_created_next建立的链表是将所有创建的互斥信号量建立链表。

[C] 纯文本查看 复制代码

/* Define the mutex structure utilized by the application.  */

typedef struct TX_MUTEX_STRUCT
{

    /* Define the mutex ID used for error checking.  */
    ULONG               tx_mutex_id;

    /* Define the mutex's name.  */
    CHAR                *tx_mutex_name;

    /* Define the mutex ownership count.  */
    UINT                tx_mutex_ownership_count;

    /* Define the mutex ownership pointer.  This pointer points to the
       the thread that owns the mutex.  */
    TX_THREAD           *tx_mutex_owner;

    /* Define the priority inheritance flag.  If this flag is set, priority
       inheritance will be in effect.  */
    UINT                tx_mutex_inherit;

    /* Define the save area for the owning thread's original priority.  */
    UINT                tx_mutex_original_priority;

    /* Define the mutex suspension list head along with a count of
       how many threads are suspended.  */
    struct TX_THREAD_STRUCT
                        *tx_mutex_suspension_list;
    UINT                tx_mutex_suspended_count;

    /* Define the created list next and previous pointers.  */
    struct TX_MUTEX_STRUCT
                        *tx_mutex_created_next,
                        *tx_mutex_created_previous;

    /* Define the priority of the highest priority thread waiting for
       this mutex.  */
    UINT                tx_mutex_highest_priority_waiting;

    /* Define the owned list next and previous pointers.  */
    struct TX_MUTEX_STRUCT
                        *tx_mutex_owned_next,
                        *tx_mutex_owned_previous;

#ifdef TX_MUTEX_ENABLE_PERFORMANCE_INFO

    /* Define the number of mutex puts.  */
    ULONG               tx_mutex_performance_put_count;

    /* Define the total number of mutex gets.  */
    ULONG               tx_mutex_performance_get_count;

    /* Define the total number of mutex suspensions.  */
    ULONG               tx_mutex_performance_suspension_count;

    /* Define the total number of mutex timeouts.  */
    ULONG               tx_mutex_performance_timeout_count;

    /* Define the total number of priority inversions.  */
    ULONG               tx_mutex_performance_priority_inversion_count;

    /* Define the total number of priority inheritance conditions.  */
    ULONG               tx_mutex_performance__priority_inheritance_count;
#endif

    /* Define the port extension in the mutex control block. This 
       is typically defined to whitespace in tx_port.h.  */
    TX_MUTEX_EXTENSION

} TX_MUTEX;

cumtjdxcz

RTX好像也是这个做法