2118c84616
方案描述：
1.周期软件定时器超时添加一个startTime字段，用于记录当前软件定时器的开始计时的时间，
在定时器响应时，开始时间修改为上一次响应的结束时间(消除了中断执行时间对软件定时器
的影响)。
2. 在执行tick中断的过程当中，持有tick动态计算锁，保证在该过程中不会触发tick周期
的计算，在tick中断结束时统一计算设置。 --- 提升tick中断的执行效率
3. 在设置tick周期时，减掉tick中断执行的时间，减小周期动态化带来的时间误差
4.新增LOSCFG_BASE_CORE_TICK_PER_SECOND_MINI配置宏，用于配置tick中断的最小响应精度
Close #I3YGP1
Signed-off-by: zhushengle <zhushengle@huawei.com>
Change-Id: Ia53e4accce497bce870557c2c3387ce51fa3fed3
164 lines
4.5 KiB
C
164 lines
4.5 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_SCHED_H
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#define _LOS_SCHED_H
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#include "los_task.h"
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#include "los_interrupt.h"
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#include "los_timer.h"
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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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#define OS_SCHED_MINI_PERIOD (OS_SYS_CLOCK / LOSCFG_BASE_CORE_TICK_PER_SECOND_MINI)
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#define OS_TICK_RESPONSE_PRECISION (UINT32)((OS_SCHED_MINI_PERIOD * 75) / 100)
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#define OS_SCHED_MAX_RESPONSE_TIME (UINT64)(((UINT64)-1) - 1U)
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extern UINT32 g_taskScheduled;
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typedef BOOL (*SchedScan)(VOID);
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extern UINT64 g_sysSchedStartTime;
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VOID OsSchedUpdateSchedTimeBase(VOID);
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UINT64 OsGetCurrSysTimeCycle(VOID);
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VOID OsSchedSetIdleTaskSchedParam(LosTaskCB *idleTask);
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UINT32 OsSchedSwtmrScanRegister(SchedScan func);
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VOID OsSchedUpdateExpireTime(UINT64 startTime, BOOL timeUpdate);
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VOID OsSchedTaskDeQueue(LosTaskCB *taskCB);
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VOID OsSchedTaskEnQueue(LosTaskCB *taskCB);
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VOID OsSchedTaskWait(LOS_DL_LIST *list, UINT32 timeout);
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VOID OsSchedTaskWake(LosTaskCB *resumedTask);
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BOOL OsSchedModifyTaskSchedParam(LosTaskCB *taskCB, UINT16 priority);
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VOID OsSchedDelay(LosTaskCB *runTask, UINT32 tick);
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VOID OsSchedYield(VOID);
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VOID OsSchedTaskExit(LosTaskCB *taskCB);
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VOID OsSchedTick(VOID);
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UINT32 OsSchedInit(VOID);
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VOID OsSchedStart(VOID);
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BOOL OsSchedTaskSwitch(VOID);
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LosTaskCB *OsGetTopTask(VOID);
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UINT32 OsSchedRealSleepTimeSet(VOID (*func)(UINT64));
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VOID OsSchedTimerBaseReset(UINT64 currTime);
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STATIC INLINE UINT64 OsGetCurrSchedTimeCycle(VOID)
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{
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if (g_sysSchedStartTime == 0) {
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return g_sysSchedStartTime;
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}
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return (OsGetCurrSysTimeCycle() - g_sysSchedStartTime);
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}
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/**
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* @ingroup los_sched
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* @brief Get the time, in nanoseconds, remaining before the next tick interrupt response.
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*
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* @par Description:
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* This API is used to get the time, in nanoseconds, remaining before the next tick interrupt response.
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*
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* @attention None.
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*
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* @param None.
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*
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* @retval #time, in nanoseconds.
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* @par Dependency:
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* <ul><li>los_sched.h: the header file that contains the API declaration.</li></ul>
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* @see
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*/
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extern UINT64 LOS_SchedTickTimeoutNsGet(VOID);
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/**
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* @ingroup los_sched
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* @brief The system-provided tick interrupt handler.
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*
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* @par Description:
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* This API is used to wake up a task that is blocked by time.
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*
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* @attention None.
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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_sched.h: the header file that contains the API declaration.</li></ul>
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* @see
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*/
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extern VOID LOS_SchedTickHandler(VOID);
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/**
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* @ingroup los_sched
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* @brief Trigger a system dispatch.
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*
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* @par Description:
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* This API is used to trigger a system dispatch.
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*
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* @attention None.
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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_sched.h: the header file that contains the API declaration.</li></ul>
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* @see
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*/
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extern VOID LOS_Schedule(VOID);
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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_SCHED_H */
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