los_swtmr_pri.h 文件参考

浏览源代码.

结构体
struct	SwtmrHandlerItem
struct	SwtmrDebugBase
struct	SwtmrDebugData

类型定义
typedef SwtmrHandlerItem *	SwtmrHandlerItemPtr

枚举
enum	SwtmrState { OS_SWTMR_STATUS_UNUSED , OS_SWTMR_STATUS_CREATED , OS_SWTMR_STATUS_TICKING }

函数
UINT32	OsSwtmrGetNextTimeout (VOID)
	Scan a software timer. 更多...
BOOL	OsIsSwtmrTask (const LosTaskCB *taskCB)
VOID	OsSwtmrResponseTimeReset (UINT64 startTime)
UINT32	OsSwtmrInit (VOID)
VOID	OsSwtmrRecycle (UINT32 processID)
	回收指定进程的软时钟 更多...
BOOL	OsSwtmrWorkQueueFind (SCHED_TL_FIND_FUNC checkFunc, UINTPTR arg)
UINT32	OsSwtmrTaskIDGetByCpuid (UINT16 cpuid)
BOOL	OsSwtmrDebugDataUsed (UINT32 swtmrID)
UINT32	OsSwtmrDebugDataGet (UINT32 swtmrID, SwtmrDebugData *data, UINT32 len, UINT8 *mode)

变量
SWTMR_CTRL_S *	g_swtmrCBArray
SPIN_LOCK_S	g_swtmrSpin

类型定义说明

SwtmrHandlerItemPtr

typedef SwtmrHandlerItem* SwtmrHandlerItemPtr

Type of the pointer to the structure of the callback function that handles software timer timeout

在文件 los_swtmr_pri.h 第 79 行定义.

枚举类型说明

SwtmrState

enum SwtmrState

Software timer state

枚举值
OS_SWTMR_STATUS_UNUSED	The software timer is not used. | 定时器未使用,系统在定时器模块初始化时，会将系统中所有定时器资源初始化成该状态。
OS_SWTMR_STATUS_CREATED	The software timer is created. | 定时器创建后未启动，或已停止.定时器创建后，不处于计数状态时，定时器将变成该状态。
OS_SWTMR_STATUS_TICKING	The software timer is timing. | 定时器处于计数状态,在定时器创建后调用LOS_SwtmrStart接口启动，定时器将变成该状态，是定时器运行时的状态。

在文件 los_swtmr_pri.h 第 55 行定义.

                {   //定时器状态
    OS_SWTMR_STATUS_UNUSED,     /**< The software timer is not used. | 定时器未使用,系统在定时器模块初始化时，会将系统中所有定时器资源初始化成该状态。   */
    OS_SWTMR_STATUS_CREATED,    /**< The software timer is created.   | 定时器创建后未启动，或已停止.定时器创建后，不处于计数状态时，定时器将变成该状态。  */
    OS_SWTMR_STATUS_TICKING     /**< The software timer is timing.    | 定时器处于计数状态,在定时器创建后调用LOS_SwtmrStart接口启动，定时器将变成该状态，是定时器运行时的状态。  */
};

函数说明

OsIsSwtmrTask()

BOOL OsIsSwtmrTask

(

const LosTaskCB *

taskCB

)

在文件 los_swtmr.c 第 383 行定义.

{
    if (taskCB->taskEntry == (TSK_ENTRY_FUNC)SwtmrTask) {
        return TRUE;
    }
    return FALSE;
}

函数调用图:

这是这个函数的调用关系图:

OsSwtmrDebugDataGet()

UINT32 OsSwtmrDebugDataGet	(	UINT32	swtmrID,
		SwtmrDebugData *	data,
		UINT32	len,
		UINT8 *	mode
	)

在文件 los_swtmr.c 第 142 行定义.

{
    UINT32 intSave;
    errno_t ret;
 
    if ((swtmrID > LOSCFG_BASE_CORE_SWTMR_LIMIT) || (data == NULL) ||
        (mode == NULL) || (len < sizeof(SwtmrDebugData))) {
        return LOS_NOK;
    }
 
    SWTMR_CTRL_S *swtmr = &g_swtmrCBArray[swtmrID];
    SWTMR_LOCK(intSave);
    ret = memcpy_s(data, len, &g_swtmrDebugData[swtmrID], sizeof(SwtmrDebugData));
    *mode = swtmr->ucMode;
    SWTMR_UNLOCK(intSave);
    if (ret != EOK) {
        return LOS_NOK;
    }
    return LOS_OK;
}

这是这个函数的调用关系图:

OsSwtmrDebugDataUsed()

BOOL OsSwtmrDebugDataUsed

(

UINT32

swtmrID

)

在文件 los_swtmr.c 第 133 行定义.

{
    if (swtmrID > LOSCFG_BASE_CORE_SWTMR_LIMIT) {
        return FALSE;
    }
 
    return g_swtmrDebugData[swtmrID].swtmrUsed;
}

这是这个函数的调用关系图:

OsSwtmrGetNextTimeout()

UINT32 OsSwtmrGetNextTimeout

(

VOID

)

Scan a software timer.

Description:

• This API is used to scan a software timer when a Tick interrupt occurs and determine whether the software timer expires.

注意

• None.

参数

None.

返回值

None.

Dependency:

• los_swtmr_pri.h: the header file that contains the API declaration.

参见

LOS_SwtmrStop

在文件 los_swtmr.c 第 675 行定义.

{
    UINT64 currTime = OsGetCurrSchedTimeCycle();
    SwtmrRunqueue *srq = &g_swtmrRunqueue[ArchCurrCpuid()];
    UINT64 time = (OsSortLinkGetNextExpireTime(currTime, &srq->swtmrSortLink) / OS_CYCLE_PER_TICK);
    if (time > OS_INVALID_VALUE) {
        time = OS_INVALID_VALUE;
    }
    return (UINT32)time;
}

函数调用图:

OsSwtmrInit()

UINT32 OsSwtmrInit

(

VOID

)

在文件 los_swtmr.c 第 441 行定义.

{
    UINT32 ret;
    UINT32 cpuid = ArchCurrCpuid();
    UINT32 swtmrTaskID;
 
    if (cpuid == 0) {
        ret = SwtmrBaseInit();
        if (ret != LOS_OK) {
            goto ERROR;
        }
    }
 
    ret = SwtmrTaskCreate(cpuid, &swtmrTaskID);
    if (ret != LOS_OK) {
        ret = LOS_ERRNO_SWTMR_TASK_CREATE_FAILED;
        goto ERROR;
    }
 
    SwtmrRunqueue *srq = &g_swtmrRunqueue[cpuid];
    srq->swtmrTask = OsGetTaskCB(swtmrTaskID);
    return LOS_OK;
 
ERROR:
    PRINT_ERR("OsSwtmrInit error! ret = %u\n", ret);
    (VOID)LOS_MemFree(m_aucSysMem0, g_swtmrCBArray);
    g_swtmrCBArray = NULL;
    (VOID)LOS_MemFree(m_aucSysMem1, g_swtmrHandlerPool);
    g_swtmrHandlerPool = NULL;
    return ret;
}

函数调用图:

这是这个函数的调用关系图:

OsSwtmrRecycle()

VOID OsSwtmrRecycle

(

UINT32

processID

)

回收指定进程的软时钟

在文件 los_swtmr.c 第 391 行定义.

{
    for (UINT16 index = 0; index < LOSCFG_BASE_CORE_SWTMR_LIMIT; index++) {//一个进程往往会有多个定时器
        if (g_swtmrCBArray[index].uwOwnerPid == processID) {//找到一个
            LOS_SwtmrDelete(index);//删除定时器
        }
    }
}

函数调用图:

这是这个函数的调用关系图:

OsSwtmrResponseTimeReset()

VOID OsSwtmrResponseTimeReset

(

UINT64

startTime

)

在文件 los_swtmr.c 第 610 行定义.

{
    UINT16 cpuid = ArchCurrCpuid();
    SortLinkAttribute *swtmrSortLink = &g_swtmrRunqueue[cpuid].swtmrSortLink;
    LOS_DL_LIST *listHead = &swtmrSortLink->sortLink;
    LOS_DL_LIST *listNext = listHead->pstNext;
 
    LOS_SpinLock(&swtmrSortLink->spinLock);
    while (listNext != listHead) {
        SortLinkList *sortList = LOS_DL_LIST_ENTRY(listNext, SortLinkList, sortLinkNode);
        OsDeleteNodeSortLink(swtmrSortLink, sortList);
        LOS_SpinUnlock(&swtmrSortLink->spinLock);
 
        SwtmrRestart(startTime, sortList, cpuid);
 
        LOS_SpinLock(&swtmrSortLink->spinLock);
        listNext = listNext->pstNext;
    }
    LOS_SpinUnlock(&swtmrSortLink->spinLock);
}

函数调用图:

这是这个函数的调用关系图:

OsSwtmrTaskIDGetByCpuid()

UINT32 OsSwtmrTaskIDGetByCpuid

(

UINT16

cpuid

)

在文件 los_swtmr.c 第 378 行定义.

{
    return g_swtmrRunqueue[cpuid].swtmrTask->taskID;
}

OsSwtmrWorkQueueFind()

BOOL OsSwtmrWorkQueueFind	(	SCHED_TL_FIND_FUNC	checkFunc,
		UINTPTR	arg
	)

在文件 los_swtmr.c 第 661 行定义.

{
    UINT32 intSave;
 
    SWTMR_LOCK(intSave);
    BOOL find = SwtmrTimeListFind(checkFunc, arg);
    SWTMR_UNLOCK(intSave);
    return find;
}

函数调用图:

变量说明

g_swtmrCBArray

SWTMR_CTRL_S* g_swtmrCBArray

extern

First address in Timer memory space
定时器池

在文件 los_swtmr.c 第 112 行定义.

g_swtmrSpin

SPIN_LOCK_S g_swtmrSpin

extern