fix: tick 动态化计算优化,减小中断执行时间对系统总体时间的影响,保证软件定时器的响应精度。

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
This commit is contained in:
zhushengle
2021-08-04 11:56:54 +08:00
parent ff7da435cf
commit 2118c84616
18 changed files with 229 additions and 169 deletions
+16
View File
@@ -65,6 +65,22 @@ extern "C" {
#define LOSCFG_BASE_CORE_TICK_PER_SECOND (100UL)
#endif
/**
* @ingroup los_config
* Minimum response error accuracy of tick interrupts, number of ticks in one second.
*/
#ifndef LOSCFG_BASE_CORE_TICK_PER_SECOND_MINI
#define LOSCFG_BASE_CORE_TICK_PER_SECOND_MINI (1000UL) /* 1ms */
#endif
#if (LOSCFG_BASE_CORE_TICK_PER_SECOND > LOSCFG_BASE_CORE_TICK_PER_SECOND_MINI)
#error "LOSCFG_BASE_CORE_TICK_PER_SECOND_MINI must be greater than LOSCFG_BASE_CORE_TICK_PER_SECOND"
#endif
#if (LOSCFG_BASE_CORE_TICK_PER_SECOND_MINI > 1000UL)
#error "LOSCFG_BASE_CORE_TICK_PER_SECOND_MINI must be less than or equal to 1000"
#endif
#if defined(LOSCFG_BASE_CORE_TICK_PER_SECOND) && \
((LOSCFG_BASE_CORE_TICK_PER_SECOND < 1UL) || (LOSCFG_BASE_CORE_TICK_PER_SECOND > 1000000000UL))
#error "LOSCFG_BASE_CORE_TICK_PER_SECOND SHOULD big than 0, and less than 1000000000UL"