任务就绪表的结构

• 由两个全局变量构成。

#if OS_LOWEST_PRIO <= 63u
#define  OS_RDY_TBL_SIZE   ((OS_LOWEST_PRIO) / 8u + 1u) /* Size of ready table*/
#else
#define  OS_RDY_TBL_SIZE   ((OS_LOWEST_PRIO) / 16u + 1u)/* Size of ready table*/
#endif
OS_EXT  OS_PRIO      OSRdyGrp;                     		/* Ready list group*/
OS_EXT  OS_PRIO      OSRdyTbl[OS_RDY_TBL_SIZE];	/* Table of tasks which are ready to run*/

其中，OS_EXT：

#ifdef   OS_GLOBALS
#define  OS_EXT
#else
#define  OS_EXT  extern
#endif

还有，OS_PRIO：

#if OS_LOWEST_PRIO <= 63u
typedef  INT8U    OS_PRIO;
#else
typedef  INT16U   OS_PRIO;
#endif

使任务进入就绪状态

#if OS_LOWEST_PRIO <= 63u                                         /* Pre-compute X, Y*/ptcb->OSTCBY             = (INT8U) (prio >> 3u);ptcb->OSTCBX             = (INT8U) (prio & 0x07u);
#else                                                             /* Pre-compute X, Y*/ptcb->OSTCBY             = (INT8U) ((INT8U) (prio >> 4u) & 0xFFu);ptcb->OSTCBX             = (INT8U) (prio & 0x0Fu);
#endif/* Pre-compute BitX and BitY*/ptcb->OSTCBBitY          = (OS_PRIO) (1uL << ptcb->OSTCBY<