#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "include/FreeRTOS.h"
#include "include/task.h"
#include "include/timers.h"
#include "include/StackMacros.h"

Data Structures
struct	tskTaskControlBlock

Macros
#define	MPU_WRAPPERS_INCLUDED_FROM_API_FILE

#define	portRESET_READY_PRIORITY(uxPriority, uxTopReadyPriority)

#define	prvAddTaskToReadyQueue(pxTCB)

#define	prvCheckDelayedTasks()

#define	prvGetTCBFromHandle(pxHandle) ( ( ( pxHandle ) == NULL ) ? ( tskTCB * ) pxCurrentTCB : ( tskTCB * ) ( pxHandle ) )

#define	taskRECORD_READY_PRIORITY(uxPriority)

#define	taskRESET_READY_PRIORITY(uxPriority)

#define	taskSELECT_HIGHEST_PRIORITY_TASK()

#define	tskBLOCKED_CHAR ( ( signed char ) 'B' )

#define	tskDELETED_CHAR ( ( signed char ) 'D' )

#define	tskIDLE_STACK_SIZE configMINIMAL_STACK_SIZE

#define	tskREADY_CHAR ( ( signed char ) 'R' )

#define	tskSTACK_FILL_BYTE ( 0xa5U )

#define	tskSUSPENDED_CHAR ( ( signed char ) 'S' )

Typedefs
typedef struct tskTaskControlBlock	tskTCB

Functions
static	portTASK_FUNCTION (prvIdleTask, pvParameters)

static void	prvAddCurrentTaskToDelayedList (portTickType xTimeToWake)

static tskTCB *	prvAllocateTCBAndStack (unsigned short usStackDepth, portSTACK_TYPE *puxStackBuffer)

static void	prvCheckTasksWaitingTermination (void)

static void	prvDeleteTCB (tskTCB *pxTCB)

static void	prvInitialiseTaskLists (static void prvCheckTasksWaitingTermination void)

static void	prvInitialiseTaskLists (void)

static void	prvInitialiseTCBVariables (tskTCB pxTCB, const signed char const pcName, unsigned portBASE_TYPE uxPriority, const xMemoryRegion *const xRegions, unsigned short usStackDepth) PRIVILEGED_FUNCTION

static void	prvListTaskWithinSingleList (const signed char pcWriteBuffer, xList pxList, signed char cStatus)

static unsigned short	usTaskCheckFreeStackSpace (const unsigned char *pucStackByte)

unsigned portBASE_TYPE	uxTaskGetNumberOfTasks (void)

unsigned portBASE_TYPE	uxTaskGetTaskNumber (xTaskHandle xTask)

unsigned portBASE_TYPE	uxTaskPriorityGet (xTaskHandle pxTask)

void	vApplicationStackOverflowHook (xTaskHandle pxTask, signed char *pcTaskName)

void	vApplicationTickHook (void)

void	vTaskDelay (portTickType xTicksToDelay)

void	vTaskDelayUntil (portTickType *const pxPreviousWakeTime, portTickType xTimeIncrement)

void	vTaskDelete (xTaskHandle pxTaskToDelete)

void	vTaskEndScheduler (void)

void	vTaskIncrementTick (void)

void	vTaskList (signed char *pcWriteBuffer)

void	vTaskMissedYield (void)

void	vTaskPlaceOnEventList (const xList *const pxEventList, portTickType xTicksToWait)

void	vTaskPlaceOnEventListRestricted (const xList *const pxEventList, portTickType xTicksToWait)

void	vTaskPriorityDisinherit (xTaskHandle *const pxMutexHolder)

void	vTaskPriorityInherit (xTaskHandle *const pxMutexHolder)

void	vTaskPrioritySet (xTaskHandle pxTask, unsigned portBASE_TYPE uxNewPriority)

void	vTaskResume (xTaskHandle pxTaskToResume)

void	vTaskSetTaskNumber (xTaskHandle xTask, unsigned portBASE_TYPE uxHandle)

void	vTaskSetTimeOutState (xTimeOutType *const pxTimeOut)

void	vTaskStartScheduler (void)

void	vTaskSuspend (xTaskHandle pxTaskToSuspend)

void	vTaskSuspendAll (void)

void	vTaskSwitchContext (void)

portBASE_TYPE	xTaskCheckForTimeOut (xTimeOutType const pxTimeOut, portTickType const pxTicksToWait)

xTaskHandle	xTaskGetCurrentTaskHandle (void)

portBASE_TYPE	xTaskGetSchedulerState (void)

portTickType	xTaskGetTickCount (void)

portTickType	xTaskGetTickCountFromISR (void)

signed portBASE_TYPE	xTaskIsTaskSuspended (xTaskHandle xTask)
	task. More...

signed portBASE_TYPE	xTaskRemoveFromEventList (const xList *const pxEventList)

signed portBASE_TYPE	xTaskResumeAll (void)

portBASE_TYPE	xTaskResumeFromISR (xTaskHandle pxTaskToResume)

Variables
PRIVILEGED_DATA tskTCB *volatile	pxCurrentTCB = NULL

static PRIVILEGED_DATA xList *volatile	pxDelayedTaskList

static PRIVILEGED_DATA xList *volatile	pxOverflowDelayedTaskList

static PRIVILEGED_DATA xList	pxReadyTasksLists [configMAX_PRIORITIES]

static PRIVILEGED_DATA volatile unsigned portBASE_TYPE	uxCurrentNumberOfTasks = ( unsigned portBASE_TYPE ) 0U

static PRIVILEGED_DATA volatile unsigned portBASE_TYPE	uxMissedTicks = ( unsigned portBASE_TYPE ) 0U

static PRIVILEGED_DATA volatile unsigned portBASE_TYPE	uxSchedulerSuspended = ( unsigned portBASE_TYPE ) pdFALSE

static PRIVILEGED_DATA unsigned portBASE_TYPE	uxTaskNumber = ( unsigned portBASE_TYPE ) 0U

static PRIVILEGED_DATA volatile unsigned portBASE_TYPE	uxTasksDeleted = ( unsigned portBASE_TYPE ) 0U

static PRIVILEGED_DATA volatile unsigned portBASE_TYPE	uxTopReadyPriority = tskIDLE_PRIORITY

static PRIVILEGED_DATA unsigned portBASE_TYPE	uxTopUsedPriority = tskIDLE_PRIORITY

static PRIVILEGED_DATA xList	xDelayedTaskList1

static PRIVILEGED_DATA xList	xDelayedTaskList2

static PRIVILEGED_DATA volatile portBASE_TYPE	xMissedYield = ( portBASE_TYPE ) pdFALSE

static PRIVILEGED_DATA volatile portTickType	xNextTaskUnblockTime = ( portTickType ) portMAX_DELAY

static PRIVILEGED_DATA volatile portBASE_TYPE	xNumOfOverflows = ( portBASE_TYPE ) 0

static PRIVILEGED_DATA xList	xPendingReadyList

static PRIVILEGED_DATA volatile signed portBASE_TYPE	xSchedulerRunning = pdFALSE

static PRIVILEGED_DATA xList	xSuspendedTaskList

static PRIVILEGED_DATA xList	xTasksWaitingTermination

static PRIVILEGED_DATA volatile portTickType	xTickCount = ( portTickType ) 0U

#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE

#define portRESET_READY_PRIORITY	(	uxPriority,
		uxTopReadyPriority
	)

Referenced by vTaskDelay(), vTaskDelayUntil(), vTaskPlaceOnEventList(), and vTaskPlaceOnEventListRestricted().

#define prvAddTaskToReadyQueue ( pxTCB )

Value:

traceMOVED_TASK_TO_READY_STATE( pxTCB )                                                                         \
	taskRECORD_READY_PRIORITY( ( pxTCB )->uxPriority );                                                                \
	vListInsertEnd( ( xList * ) &( pxReadyTasksLists[ ( pxTCB )->uxPriority ] ), &( ( pxTCB )->xGenericListItem ) )

Referenced by prvInitialiseTaskLists(), vTaskPriorityDisinherit(), vTaskPriorityInherit(), vTaskPrioritySet(), vTaskResume(), xTaskRemoveFromEventList(), xTaskResumeAll(), and xTaskResumeFromISR().

#define prvCheckDelayedTasks ( )

Referenced by vTaskIncrementTick().

#define prvGetTCBFromHandle ( pxHandle ) ( ( ( pxHandle ) == NULL ) ? ( tskTCB * ) pxCurrentTCB : ( tskTCB * ) ( pxHandle ) )

Referenced by uxTaskPriorityGet(), vTaskDelete(), vTaskPrioritySet(), and vTaskSuspend().

#define taskRECORD_READY_PRIORITY ( uxPriority )

Value:

{                                                                                                                   \
		if( ( uxPriority ) > uxTopReadyPriority )                                                                     \
        {                                                                                                               \
			uxTopReadyPriority = ( uxPriority );                                                                     \
        }                                                                                                               \
    } /* taskRECORD_READY_PRIORITY */

#define taskRESET_READY_PRIORITY ( uxPriority )

Referenced by vTaskDelete(), vTaskPriorityDisinherit(), vTaskPriorityInherit(), vTaskPrioritySet(), and vTaskSuspend().

#define taskSELECT_HIGHEST_PRIORITY_TASK ( )

Value:

{                                                                                                                   \
        /* Find the highest priority queue that contains ready tasks. */                                                \
        while( listLIST_IS_EMPTY( &( pxReadyTasksLists[ uxTopReadyPriority ] ) ) )                                      \
        {                                                                                                               \
			configASSERT( uxTopReadyPriority );                                                                          \
            --uxTopReadyPriority;                                                                                       \
        }                                                                                                               \
                                                                                                                        \
        /* listGET_OWNER_OF_NEXT_ENTRY indexes through the list, so the tasks of                                        \
        the same priority get an equal share of the processor time. */                                                  \
		listGET_OWNER_OF_NEXT_ENTRY( pxCurrentTCB, &( pxReadyTasksLists[ uxTopReadyPriority ] ) );                        \
    } /* taskSELECT_HIGHEST_PRIORITY_TASK */

Referenced by vTaskSwitchContext().

#define tskBLOCKED_CHAR ( ( signed char ) 'B' )

Referenced by vTaskList().

#define tskDELETED_CHAR ( ( signed char ) 'D' )

Referenced by vTaskList().

#define tskIDLE_STACK_SIZE configMINIMAL_STACK_SIZE

Referenced by vTaskStartScheduler().

#define tskREADY_CHAR ( ( signed char ) 'R' )

Referenced by vTaskList().

#define tskSTACK_FILL_BYTE ( 0xa5U )

Referenced by prvAllocateTCBAndStack(), and usTaskCheckFreeStackSpace().

#define tskSUSPENDED_CHAR ( ( signed char ) 'S' )

Referenced by vTaskList().

typedef struct tskTaskControlBlock tskTCB

static portTASK_FUNCTION	(	prvIdleTask	,
		pvParameters
	)

static

References configASSERT, listCURRENT_LIST_LENGTH, portSUPPRESS_TICKS_AND_SLEEP, prvCheckTasksWaitingTermination(), pxReadyTasksLists, taskYIELD, void, vTaskSuspendAll(), xNextTaskUnblockTime, xTaskResumeAll(), and xTickCount.

static void prvAddCurrentTaskToDelayedList ( portTickType xTimeToWake )

static

References listSET_LIST_ITEM_VALUE, pxCurrentTCB, pxDelayedTaskList, pxOverflowDelayedTaskList, vListInsert(), tskTaskControlBlock::xGenericListItem, xNextTaskUnblockTime, and xTickCount.

Referenced by vTaskDelay(), vTaskDelayUntil(), vTaskPlaceOnEventList(), and vTaskPlaceOnEventListRestricted().

static tskTCB* prvAllocateTCBAndStack	(	unsigned short	usStackDepth,
		portSTACK_TYPE *	puxStackBuffer
	)

static

References NULL, pvPortMalloc(), pvPortMallocAligned, tskTaskControlBlock::pxStack, tskSTACK_FILL_BYTE, and vPortFree().

Referenced by prvInitialiseTaskLists().

static void prvCheckTasksWaitingTermination ( void )

static

References listGET_OWNER_OF_HEAD_ENTRY, listLIST_IS_EMPTY, pdFALSE, prvDeleteTCB(), taskENTER_CRITICAL, taskEXIT_CRITICAL, uxCurrentNumberOfTasks, uxListRemove(), uxTasksDeleted, vTaskSuspendAll(), tskTaskControlBlock::xGenericListItem, xTaskResumeAll(), and xTasksWaitingTermination.

Referenced by portTASK_FUNCTION().

static void prvDeleteTCB ( tskTCB * pxTCB )

static

References portCLEAN_UP_TCB, tskTaskControlBlock::pxStack, vPortFree(), and vPortFreeAligned.

Referenced by prvCheckTasksWaitingTermination().

static void prvInitialiseTaskLists ( static void prvCheckTasksWaitingTermination void )

static

static void prvInitialiseTaskLists ( void )

static

References configMAX_PRIORITIES, pxDelayedTaskList, pxOverflowDelayedTaskList, pxReadyTasksLists, vListInitialise(), xDelayedTaskList1, xDelayedTaskList2, xPendingReadyList, xSuspendedTaskList, and xTasksWaitingTermination.

static void prvInitialiseTCBVariables	(	tskTCB *	pxTCB,
		const signed char *const	pcName,
		unsigned portBASE_TYPE	uxPriority,
		const xMemoryRegion *const	xRegions,
		unsigned short	usStackDepth
	)

static

References configMAX_PRIORITIES, configMAX_TASK_NAME_LEN, listSET_LIST_ITEM_OWNER, listSET_LIST_ITEM_VALUE, NULL, tskTaskControlBlock::pcTaskName, tskTaskControlBlock::pxStack, tskTaskControlBlock::uxBasePriority, tskTaskControlBlock::uxPriority, vListInitialiseItem(), void, tskTaskControlBlock::xEventListItem, and tskTaskControlBlock::xGenericListItem.

Referenced by prvInitialiseTaskLists().

static void prvListTaskWithinSingleList	(	const signed char *	pcWriteBuffer,
		xList *	pxList,
		signed char	cStatus
	)

static

References configMAX_TASK_NAME_LEN, listGET_OWNER_OF_NEXT_ENTRY, tskTaskControlBlock::pcTaskName, PRIVILEGED_DATA, tskTaskControlBlock::pxStack, usTaskCheckFreeStackSpace(), tskTaskControlBlock::uxPriority, and tskTaskControlBlock::uxTCBNumber.

Referenced by vTaskList().

static unsigned short usTaskCheckFreeStackSpace ( const unsigned char * pucStackByte )

static

References tskSTACK_FILL_BYTE.

Referenced by prvListTaskWithinSingleList().

unsigned portBASE_TYPE uxTaskGetNumberOfTasks ( void )

References uxCurrentNumberOfTasks.

unsigned portBASE_TYPE uxTaskGetTaskNumber ( xTaskHandle xTask )

References NULL, and tskTaskControlBlock::uxTaskNumber.

unsigned portBASE_TYPE uxTaskPriorityGet ( xTaskHandle pxTask )

References prvGetTCBFromHandle, taskENTER_CRITICAL, taskEXIT_CRITICAL, and tskTaskControlBlock::uxPriority.

void vApplicationStackOverflowHook	(	xTaskHandle	pxTask,
		signed char *	pcTaskName
	)

void vApplicationTickHook ( void )

Referenced by vTaskIncrementTick().

void vTaskDelay ( portTickType xTicksToDelay )

void vTaskDelayUntil	(	portTickType *const	pxPreviousWakeTime,
		portTickType	xTimeIncrement
	)

References configASSERT, pdFALSE, pdTRUE, portRESET_READY_PRIORITY, portYIELD_WITHIN_API, prvAddCurrentTaskToDelayedList(), pxCurrentTCB, traceTASK_DELAY_UNTIL, uxListRemove(), tskTaskControlBlock::uxPriority, uxTopReadyPriority, vTaskSuspendAll(), tskTaskControlBlock::xGenericListItem, xTaskResumeAll(), and xTickCount.

void vTaskEndScheduler ( void )

References pdFALSE, vPortEndScheduler(), and xSchedulerRunning.

void vTaskIncrementTick ( void )

References configASSERT, listGET_LIST_ITEM_VALUE, listGET_OWNER_OF_HEAD_ENTRY, listLIST_IS_EMPTY, pdFALSE, prvCheckDelayedTasks, pxDelayedTaskList, pxOverflowDelayedTaskList, traceTASK_INCREMENT_TICK, uxMissedTicks, uxSchedulerSuspended, vApplicationTickHook(), tskTaskControlBlock::xGenericListItem, xNextTaskUnblockTime, xNumOfOverflows, and xTickCount.

Referenced by xTaskResumeAll().

void vTaskList ( signed char * pcWriteBuffer )

References listLIST_IS_EMPTY, pdFALSE, prvListTaskWithinSingleList(), pxDelayedTaskList, pxOverflowDelayedTaskList, pxReadyTasksLists, tskBLOCKED_CHAR, tskDELETED_CHAR, tskIDLE_PRIORITY, tskREADY_CHAR, tskSUSPENDED_CHAR, uxTopUsedPriority, vTaskSuspendAll(), xSuspendedTaskList, xTaskResumeAll(), and xTasksWaitingTermination.

void vTaskMissedYield ( void )

References pdTRUE, and xMissedYield.

Referenced by prvUnlockQueue().

void vTaskPlaceOnEventList	(	const xList *const	pxEventList,
		portTickType	xTicksToWait
	)

References configASSERT, portRESET_READY_PRIORITY, prvAddCurrentTaskToDelayedList(), pxCurrentTCB, uxListRemove(), tskTaskControlBlock::uxPriority, uxTopReadyPriority, vListInsert(), vListInsertEnd(), tskTaskControlBlock::xEventListItem, tskTaskControlBlock::xGenericListItem, xSuspendedTaskList, and xTickCount.

Referenced by xQueueGenericReceive(), and xQueueGenericSend().

void vTaskPlaceOnEventListRestricted	(	const xList *const	pxEventList,
		portTickType	xTicksToWait
	)

References configASSERT, portRESET_READY_PRIORITY, prvAddCurrentTaskToDelayedList(), pxCurrentTCB, traceTASK_DELAY_UNTIL, uxListRemove(), tskTaskControlBlock::uxPriority, uxTopReadyPriority, vListInsertEnd(), tskTaskControlBlock::xEventListItem, tskTaskControlBlock::xGenericListItem, and xTickCount.

Referenced by vQueueWaitForMessageRestricted().

void vTaskPriorityDisinherit ( xTaskHandle *const pxMutexHolder )

References configMAX_PRIORITIES, listSET_LIST_ITEM_VALUE, NULL, prvAddTaskToReadyQueue, taskRESET_READY_PRIORITY, traceTASK_PRIORITY_DISINHERIT, tskTaskControlBlock::uxBasePriority, uxListRemove(), tskTaskControlBlock::uxPriority, tskTaskControlBlock::xEventListItem, and tskTaskControlBlock::xGenericListItem.

Referenced by prvCopyDataToQueue().

void vTaskPriorityInherit ( xTaskHandle *const pxMutexHolder )

References configMAX_PRIORITIES, listIS_CONTAINED_WITHIN, listSET_LIST_ITEM_VALUE, NULL, pdFALSE, prvAddTaskToReadyQueue, pxCurrentTCB, pxReadyTasksLists, taskRESET_READY_PRIORITY, traceTASK_PRIORITY_INHERIT, uxListRemove(), tskTaskControlBlock::uxPriority, tskTaskControlBlock::xEventListItem, and tskTaskControlBlock::xGenericListItem.

Referenced by xQueueGenericReceive().

void vTaskPrioritySet	(	xTaskHandle	pxTask,
		unsigned portBASE_TYPE	uxNewPriority
	)

void vTaskResume ( xTaskHandle pxTaskToResume )

References configASSERT, NULL, pdTRUE, portYIELD_WITHIN_API, prvAddTaskToReadyQueue, pxCurrentTCB, taskENTER_CRITICAL, taskEXIT_CRITICAL, traceTASK_RESUME, uxListRemove(), tskTaskControlBlock::uxPriority, tskTaskControlBlock::xGenericListItem, and xTaskIsTaskSuspended().

void vTaskSetTaskNumber	(	xTaskHandle	xTask,
		unsigned portBASE_TYPE	uxHandle
	)

References NULL, and tskTaskControlBlock::uxTaskNumber.

void vTaskSetTimeOutState ( xTimeOutType *const pxTimeOut )

References configASSERT, xNumOfOverflows, xTIME_OUT::xOverflowCount, xTickCount, and xTIME_OUT::xTimeOnEntering.

Referenced by xQueueGenericReceive(), xQueueGenericSend(), and xTaskCheckForTimeOut().

void vTaskStartScheduler ( void )

References configASSERT, NULL, pdFALSE, pdPASS, pdTRUE, portCONFIGURE_TIMER_FOR_RUN_TIME_STATS, portPRIVILEGE_BIT, tskIDLE_PRIORITY, tskIDLE_STACK_SIZE, xPortStartScheduler(), xSchedulerRunning, xTaskCreate, xTickCount, and xTimerCreateTimerTask().

Referenced by main().

void vTaskSuspendAll ( void )

References uxSchedulerSuspended.

Referenced by portTASK_FUNCTION(), prvCheckTasksWaitingTermination(), prvProcessTimerOrBlockTask(), pvPortMalloc(), vPortFree(), vTaskDelay(), vTaskDelayUntil(), vTaskList(), xQueueGenericReceive(), and xQueueGenericSend().

void vTaskSwitchContext ( void )

References pdFALSE, pdTRUE, pxCurrentTCB, taskFIRST_CHECK_FOR_STACK_OVERFLOW, taskSECOND_CHECK_FOR_STACK_OVERFLOW, taskSELECT_HIGHEST_PRIORITY_TASK, traceTASK_SWITCHED_IN, traceTASK_SWITCHED_OUT, uxSchedulerSuspended, and xMissedYield.

Referenced by vTaskSuspend().

portBASE_TYPE xTaskCheckForTimeOut	(	xTimeOutType *const	pxTimeOut,
		portTickType *const	pxTicksToWait
	)

References configASSERT, pdFALSE, pdTRUE, taskENTER_CRITICAL, taskEXIT_CRITICAL, vTaskSetTimeOutState(), xNumOfOverflows, xTIME_OUT::xOverflowCount, xTickCount, and xTIME_OUT::xTimeOnEntering.

Referenced by xQueueGenericReceive(), and xQueueGenericSend().

xTaskHandle xTaskGetCurrentTaskHandle ( void )

References pxCurrentTCB.

Referenced by net_in_tcpip_task(), os_hook_dispatch_no_wait(), os_hook_dispatch_wait(), os_m2m_wifi_init_imp(), tcpip_init_done(), xQueueGenericReceive(), xQueueGiveMutexRecursive(), and xQueueTakeMutexRecursive().

portBASE_TYPE xTaskGetSchedulerState ( void )

References pdFALSE, taskSCHEDULER_NOT_STARTED, taskSCHEDULER_RUNNING, taskSCHEDULER_SUSPENDED, uxSchedulerSuspended, and xSchedulerRunning.

Referenced by xTimerGenericCommand().

portTickType xTaskGetTickCount ( void )

References taskENTER_CRITICAL, taskEXIT_CRITICAL, and xTickCount.

Referenced by iperf_tcp_send(), iperf_udp_send(), prvSampleTimeNow(), sys_arch_mbox_fetch(), sys_arch_sem_wait(), and sys_now().

portTickType xTaskGetTickCountFromISR ( void )

References portCLEAR_INTERRUPT_MASK_FROM_ISR, portSET_INTERRUPT_MASK_FROM_ISR, and xTickCount.

signed portBASE_TYPE xTaskIsTaskSuspended ( xTaskHandle xTask )

task.

h

signed portBASE_TYPE xTaskIsTaskSuspended( xTaskHandle xTask );

Utility task that simply returns pdTRUE if the task referenced by xTask is currently in the Suspended state, or pdFALSE if the task referenced by xTask is in any other state.

References configASSERT, listIS_CONTAINED_WITHIN, NULL, pdFALSE, pdTRUE, tskTaskControlBlock::xEventListItem, tskTaskControlBlock::xGenericListItem, xPendingReadyList, and xSuspendedTaskList.

Referenced by vTaskResume(), and xTaskResumeFromISR().

signed portBASE_TYPE xTaskRemoveFromEventList ( const xList *const pxEventList )

References configASSERT, listGET_OWNER_OF_HEAD_ENTRY, pdFALSE, pdTRUE, prvAddTaskToReadyQueue, pxCurrentTCB, uxListRemove(), tskTaskControlBlock::uxPriority, uxSchedulerSuspended, vListInsertEnd(), tskTaskControlBlock::xEventListItem, tskTaskControlBlock::xGenericListItem, and xPendingReadyList.