6d8cef40c8
背景： 原调度机制与软件定时器实现混合，调度时间链表存在两个链表， 任务切换时需要遍历两个链表才可以获取到最终的tick响应时间。 软件定时作为一个独立的功能，不应该和调度强耦合，而且软件定时 器作为一个任务，某个软件定时器的响应时间应该是软件定时器任务的 响应时间，不应该直接做为tick中断的响应时间。 方案描述： 1.将软件定时器从调度分离，作为一个独立的机制，从调度角度看其就是一个任务 2.软件定时器从调度分离之后，其timelist遍历从tick中断移动至软件定时器任务中 3.优化软件定时器的均衡调度 优势： 1.将软件定时器与调度完全分离，使得调度功能单一化，便于后续其它调度算法的引入 2.优化tick中断，减小tick中断耗时 3.优化通过写队列唤醒软件定时器任务去执行软件定时器钩子为插队列，减少软件定时 器机制本身的耗时，提升软件定时器的实时性 4.优化软件定时器均衡调度，使得软件定时器均匀分布于多核，提升软件定时器的实时性 Signed-off-by: zhushengle <zhushengle@huawei.com> Change-Id: I07c01f134e69c1d9b7061ddf5a231df1ee99b68e
150 lines
4.6 KiB
C
150 lines
4.6 KiB
C
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LOS_SWTMR_PRI_H
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#define _LOS_SWTMR_PRI_H
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#include "los_swtmr.h"
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#include "los_spinlock.h"
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#include "los_sched_pri.h"
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#ifdef LOSCFG_SECURITY_VID
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#include "vid_api.h"
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#else
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#define MAX_INVALID_TIMER_VID OS_SWTMR_MAX_TIMERID
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#endif
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#ifdef __cplusplus
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#if __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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/**
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* @ingroup los_swtmr_pri
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* Software timer state
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*/
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enum SwtmrState {
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OS_SWTMR_STATUS_UNUSED, /**< The software timer is not used. */
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OS_SWTMR_STATUS_CREATED, /**< The software timer is created. */
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OS_SWTMR_STATUS_TICKING /**< The software timer is timing. */
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};
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/**
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* @ingroup los_swtmr_pri
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* Structure of the callback function that handles software timer timeout
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*/
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typedef struct {
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SWTMR_PROC_FUNC handler; /**< Callback function that handles software timer timeout */
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UINTPTR arg; /**< Parameter passed in when the callback function
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that handles software timer timeout is called */
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LOS_DL_LIST node;
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#ifdef LOSCFG_SWTMR_DEBUG
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UINT32 swtmrID;
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#endif
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} SwtmrHandlerItem;
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/**
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* @ingroup los_swtmr_pri
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* Type of the pointer to the structure of the callback function that handles software timer timeout
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*/
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typedef SwtmrHandlerItem *SwtmrHandlerItemPtr;
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extern SWTMR_CTRL_S *g_swtmrCBArray;
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#define OS_SWT_FROM_SID(swtmrID) ((SWTMR_CTRL_S *)g_swtmrCBArray + ((swtmrID) % LOSCFG_BASE_CORE_SWTMR_LIMIT))
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/**
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* @ingroup los_swtmr_pri
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* @brief Scan a software timer.
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*
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* @par Description:
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* <ul>
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* <li>This API is used to scan a software timer when a Tick interrupt occurs and determine whether
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* the software timer expires.</li>
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* </ul>
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* @attention
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* <ul>
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* <li>None.</li>
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* </ul>
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*
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* @param None.
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*
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* @retval None.
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* @par Dependency:
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* <ul><li>los_swtmr_pri.h: the header file that contains the API declaration.</li></ul>
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* @see LOS_SwtmrStop
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*/
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extern UINT32 OsSwtmrGetNextTimeout(VOID);
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extern BOOL OsIsSwtmrTask(const LosTaskCB *taskCB);
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extern VOID OsSwtmrResponseTimeReset(UINT64 startTime);
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extern UINT32 OsSwtmrInit(VOID);
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extern VOID OsSwtmrRecycle(UINT32 processID);
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extern BOOL OsSwtmrWorkQueueFind(SCHED_TL_FIND_FUNC checkFunc, UINTPTR arg);
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extern SPIN_LOCK_S g_swtmrSpin;
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extern UINT32 OsSwtmrTaskIDGetByCpuid(UINT16 cpuid);
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#ifdef LOSCFG_SWTMR_DEBUG
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typedef struct {
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UINT64 startTime;
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UINT64 waitTimeMax;
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UINT64 waitTime;
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UINT64 waitCount;
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UINT64 readyStartTime;
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UINT64 readyTime;
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UINT64 readyTimeMax;
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UINT64 runTime;
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UINT64 runTimeMax;
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UINT64 runCount;
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UINT32 times;
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} SwtmrDebugBase;
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typedef struct {
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SwtmrDebugBase base;
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SWTMR_PROC_FUNC handler;
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UINT32 period;
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UINT32 cpuid;
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BOOL swtmrUsed;
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} SwtmrDebugData;
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extern BOOL OsSwtmrDebugDataUsed(UINT32 swtmrID);
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extern UINT32 OsSwtmrDebugDataGet(UINT32 swtmrID, SwtmrDebugData *data, UINT32 len, UINT8 *mode);
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#endif
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#ifdef __cplusplus
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#if __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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#endif /* _LOS_SWTMR_PRI_H */
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