ucos代码阅读（6）全局变量

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/*
*********************************************************************************************************
* GLOBAL VARIABLES（英文）
*********************************************************************************************************
*/

OS_EXT INT32U OSCtxSwCtr; /* Counter of number of context switches */

#if (OS_EVENT_EN) && (OS_MAX_EVENTS > 0)
OS_EXT OS_EVENT *OSEventFreeList; /* Pointer to list of free EVENT control blocks */
OS_EXT OS_EVENT OSEventTbl[OS_MAX_EVENTS];/* Table of EVENT control blocks */
#endif

#if (OS_FLAG_EN > 0) && (OS_MAX_FLAGS > 0)
OS_EXT OS_FLAG_GRP OSFlagTbl[OS_MAX_FLAGS]; /* Table containing event flag groups */
OS_EXT OS_FLAG_GRP *OSFlagFreeList; /* Pointer to free list of event flag groups */
#endif

#if OS_TASK_STAT_EN > 0
OS_EXT INT8U OSCPUUsage; /* Percentage of CPU used */
OS_EXT INT32U OSIdleCtrMax; /* Max. value that idle ctr can take in 1 sec. */
OS_EXT INT32U OSIdleCtrRun; /* Val. reached by idle ctr at run time in 1 sec. */
OS_EXT BOOLEAN OSStatRdy; /* Flag indicating that the statistic task is rdy */
OS_EXT OS_STK OSTaskStatStk[OS_TASK_STAT_STK_SIZE]; /* Statistics task stack */
#endif

OS_EXT INT8U OSIntNesting; /* Interrupt nesting level */

OS_EXT INT8U OSLockNesting; /* Multitasking lock nesting level */

OS_EXT INT8U OSPrioCur; /* Priority of current task */
OS_EXT INT8U OSPrioHighRdy; /* Priority of highest priority task */

#if OS_LOWEST_PRIO <= 63
OS_EXT INT8U OSRdyGrp; /* Ready list group */
OS_EXT INT8U OSRdyTbl[OS_RDY_TBL_SIZE]; /* Table of tasks which are ready to run */
#else
OS_EXT INT16U OSRdyGrp; /* Ready list group */
OS_EXT INT16U OSRdyTbl[OS_RDY_TBL_SIZE]; /* Table of tasks which are ready to run */
#endif

OS_EXT BOOLEAN OSRunning; /* Flag indicating that kernel is running */

OS_EXT INT8U OSTaskCtr; /* Number of tasks created */

OS_EXT volatile INT32U OSIdleCtr; /* Idle counter */

OS_EXT OS_STK OSTaskIdleStk[OS_TASK_IDLE_STK_SIZE]; /* Idle task stack */

OS_EXT OS_TCB *OSTCBCur; /* Pointer to currently running TCB */
OS_EXT OS_TCB *OSTCBFreeList; /* Pointer to list of free TCBs */
OS_EXT OS_TCB *OSTCBHighRdy; /* Pointer to highest priority TCB R-to-R */
OS_EXT OS_TCB *OSTCBList; /* Pointer to doubly linked list of TCBs */
OS_EXT OS_TCB *OSTCBPrioTbl[OS_LOWEST_PRIO + 1];/* Table of pointers to created TCBs */
OS_EXT OS_TCB OSTCBTbl[OS_MAX_TASKS + OS_N_SYS_TASKS]; /* Table of TCBs */

#if OS_TICK_STEP_EN > 0
OS_EXT INT8U OSTickStepState; /* Indicates the state of the tick step feature */
#endif

#if (OS_MEM_EN > 0) && (OS_MAX_MEM_PART > 0)
OS_EXT OS_MEM *OSMemFreeList; /* Pointer to free list of memory partitions */
OS_EXT OS_MEM OSMemTbl[OS_MAX_MEM_PART];/* Storage for memory partition manager */
#endif

#if (OS_Q_EN > 0) && (OS_MAX_QS > 0)
OS_EXT OS_Q *OSQFreeList; /* Pointer to list of free QUEUE control blocks */
OS_EXT OS_Q OSQTbl[OS_MAX_QS]; /* Table of QUEUE control blocks */
#endif

#if OS_TIME_GET_SET_EN > 0
OS_EXT volatile INT32U OSTime; /* Current value of system time (in ticks) */
#endif

#if OS_TMR_EN > 0
OS_EXT INT16U OSTmrFree; /* Number of free entries in the timer pool */
OS_EXT INT16U OSTmrUsed; /* Number of timers used */
OS_EXT INT32U OSTmrTime; /* Current timer time */

OS_EXT OS_EVENT *OSTmrSem; /* Sem. used to gain exclusive access to timers */
OS_EXT OS_EVENT *OSTmrSemSignal; /* Sem. used to signal the update of timers */

OS_EXT OS_TMR OSTmrTbl[OS_TMR_CFG_MAX]; /* Table containing pool of timers */
OS_EXT OS_TMR *OSTmrFreeList; /* Pointer to free list of timers */
OS_EXT OS_STK OSTmrTaskStk[OS_TASK_TMR_STK_SIZE];

OS_EXT OS_TMR_WHEEL OSTmrWheelTbl[OS_TMR_CFG_WHEEL_SIZE];
#endif

extern INT8U const OSUnMapTbl[256]; /* Priority->Index lookup table */

/*
*********************************************************************************************************
* GLOBAL VARIABLES（中文）
*********************************************************************************************************
*/

===================================================================================================================================

OS_EXT INT32U OSCtxSwCtr; /* Counter of number of context switches int型变量，上下文切换的次数 */

#if (OS_EVENT_EN) && (OS_MAX_EVENTS > 0)
OS_EXT OS_EVENT *OSEventFreeList; /* Pointer to list of free EVENT control blocks 指针，指向未分配的事件控制块 */
OS_EXT OS_EVENT OSEventTbl[OS_MAX_EVENTS];/* Table of EVENT control blocks 事件类型的数组，事件控制块表 */
#endif

#if (OS_FLAG_EN > 0) && (OS_MAX_FLAGS > 0)
OS_EXT OS_FLAG_GRP OSFlagTbl[OS_MAX_FLAGS]; /* Table containing event flag groups 标志组类型的数组事件标志组 */
OS_EXT OS_FLAG_GRP *OSFlagFreeList; /* Pointer to free list of event flag groups 指针，指针，指向未分配的标志组 */
#endif

#if OS_TASK_STAT_EN > 0
OS_EXT INT8U OSCPUUsage; /* Percentage of CPU used CPU 的使用率 */
OS_EXT INT32U OSIdleCtrMax; /* Max. value that idle ctr can take in 1 sec. 一秒钟idle的运行次数的最大值 */
OS_EXT INT32U OSIdleCtrRun; /* Val. reached by idle ctr at run time in 1 sec. */
OS_EXT BOOLEAN OSStatRdy; /* Flag indicating that the statistic task is rdy 标明统计任务已经进入就绪态 */
OS_EXT OS_STK OSTaskStatStk[OS_TASK_STAT_STK_SIZE]; /* Statistics task stack 统计任务的堆栈*/
#endif

OS_EXT INT8U OSIntNesting; /* Interrupt nesting level 中断的网级别 */

OS_EXT INT8U OSLockNesting; /* Multitasking lock nesting level 多任务的网锁*/

OS_EXT INT8U OSPrioCur; /* Priority of current task 当前任务的优先级*/
OS_EXT INT8U OSPrioHighRdy; /* Priority of highest priority task 就绪任务的最高优先级*/

#if OS_LOWEST_PRIO <= 63
OS_EXT INT8U OSRdyGrp; /* Ready list group 就绪的表组*/
OS_EXT INT8U OSRdyTbl[OS_RDY_TBL_SIZE]; /* Table of tasks which are ready to run 处在就绪态的任务 */
#else
OS_EXT INT16U OSRdyGrp; /* Ready list group */
OS_EXT INT16U OSRdyTbl[OS_RDY_TBL_SIZE]; /* Table of tasks which are ready to run */
#endif

OS_EXT BOOLEAN OSRunning; /* Flag indicating that kernel is running 标志标明内核在运行 */

OS_EXT INT8U OSTaskCtr; /* Number of tasks created 已经创建的任务的数量 */

OS_EXT volatile INT32U OSIdleCtr; /* Idle counter 执行空闲任务的次数 */

OS_EXT OS_STK OSTaskIdleStk[OS_TASK_IDLE_STK_SIZE]; /* Idle task stack 空任务的堆栈 */

OS_EXT OS_TCB *OSTCBCur; /* Pointer to currently running TCB 当前运行的任务的TCB*/
OS_EXT OS_TCB *OSTCBFreeList; /* Pointer to list of free TCBs 指针，指向空闲的TCB链表*/
OS_EXT OS_TCB *OSTCBHighRdy; /* Pointer to highest priority TCB R-to-R 指针，指向优先级最高的任务的TCB*/
OS_EXT OS_TCB *OSTCBList; /* Pointer to doubly linked list of TCBs 指针，指向TCB双向链表*/
OS_EXT OS_TCB *OSTCBPrioTbl[OS_LOWEST_PRIO + 1];/* Table of pointers to created TCBs 指针，指向已经被创建的任务的TCB*/
OS_EXT OS_TCB OSTCBTbl[OS_MAX_TASKS + OS_N_SYS_TASKS]; /* Table of TCBs TCB类型的数组，TCB表*/

#if OS_TICK_STEP_EN > 0
OS_EXT INT8U OSTickStepState; /* Indicates the state of the tick step feature 表明 */
#endif

#if (OS_MEM_EN > 0) && (OS_MAX_MEM_PART > 0)
OS_EXT OS_MEM *OSMemFreeList; /* Pointer to free list of memory partitions */
OS_EXT OS_MEM OSMemTbl[OS_MAX_MEM_PART];/* Storage for memory partition manager */
#endif

#if (OS_Q_EN > 0) && (OS_MAX_QS > 0)
OS_EXT OS_Q *OSQFreeList; /* Pointer to list of free QUEUE control blocks 指针指向控制块队列 */
OS_EXT OS_Q OSQTbl[OS_MAX_QS]; /* Table of QUEUE control blocks 指针表*/
#endif

#if OS_TIME_GET_SET_EN > 0
OS_EXT volatile INT32U OSTime; /* Current value of system time (in ticks) 系统时间*/
#endif

#if OS_TMR_EN > 0
OS_EXT INT16U OSTmrFree; /* Number of free entries in the timer pool 未分配的定时器数目 */
OS_EXT INT16U OSTmrUsed; /* Number of timers used 已经使用的定时器*/
OS_EXT INT32U OSTmrTime; /* Current timer time 当前定时器时间*/

OS_EXT OS_EVENT *OSTmrSem; /* Sem. used to gain exclusive access to timers */
OS_EXT OS_EVENT *OSTmrSemSignal; /* Sem. used to signal the update of timers 信号量用于更新定时器 */

OS_EXT OS_TMR OSTmrTbl[OS_TMR_CFG_MAX]; /* Table containing pool of timers 数组，定时器池 */
OS_EXT OS_TMR *OSTmrFreeList; /* Pointer to free list of timers 指针指向定时器链表*/
OS_EXT OS_STK OSTmrTaskStk[OS_TASK_TMR_STK_SIZE];

OS_EXT OS_TMR_WHEEL OSTmrWheelTbl[OS_TMR_CFG_WHEEL_SIZE];
#endif

extern INT8U const OSUnMapTbl[256]; /* Priority->Index lookup table */

其中红色的是既有table，又有list的

ucos代码阅读（6） 全局变量

ucos代码阅读（6）全局变量