diff --git a/los_sys.c b/los_sys.c deleted file mode 100644 index 4235560..0000000 --- a/los_sys.c +++ /dev/null @@ -1,104 +0,0 @@ -/* - * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved. - * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, this list of - * conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright notice, this list - * of conditions and the following disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * 3. Neither the name of the copyright holder nor the names of its contributors may be used - * to endorse or promote products derived from this software without specific prior written - * permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - - -/* -LOS_TickCountGet():获取当前的系统节拍数。通过调用OsGetCurrSchedTimeCycle()函数获取当前调度时间周期,并将其除以每个节拍的周期数,得到节拍数。 - -LOS_CyclePerTickGet():获取每个节拍的周期数。通过将系统时钟频率除以每秒节拍数,得到每个节拍的周期数。 - -LOS_MS2Tick():将毫秒转换为节拍数。将给定的毫秒数乘以每秒节拍数,再除以每秒毫秒数,得到节拍数。 - -LOS_Tick2MS():将节拍数转换为毫秒。将给定的节拍数乘以每秒毫秒数,再除以每秒节拍数,得到毫秒数。 - -OsNS2Tick():将纳秒转换为节拍数。首先计算每个节拍的纳秒数,然后将给定的纳秒数加上每个节拍的纳秒数减1,再除以每个节拍的纳秒数,得到节拍数。如果节拍数超过最大值,则将其设置为最大值。 -*/ - -#include "los_sys_pri.h" -#include "los_sched_pri.h" - - // 定义最大值 -#define OS_MAX_VALUE 0xFFFFFFFFUL - -// 获取当前的系统节拍数 -LITE_OS_SEC_TEXT_MINOR UINT64 LOS_TickCountGet(VOID) -{ - // 调用内部函数获取当前调度时间周期并除以每个节拍的周期数,得到节拍数 - return OsGetCurrSchedTimeCycle() / OS_CYCLE_PER_TICK; -} - -// 获取每个节拍的周期数 -LITE_OS_SEC_TEXT_MINOR UINT32 LOS_CyclePerTickGet(VOID) -{ - // 返回系统时钟频率除以每秒节拍数,得到每个节拍的周期数 - return g_sysClock / LOSCFG_BASE_CORE_TICK_PER_SECOND; -} - -// 将毫秒转换为节拍数 -LITE_OS_SEC_TEXT_MINOR UINT32 LOS_MS2Tick(UINT32 millisec) -{ - // 如果毫秒数等于最大值,直接返回最大值 - if (millisec == OS_MAX_VALUE) { - return OS_MAX_VALUE; - } - - // 将毫秒数乘以每秒节拍数,再除以每秒毫秒数,得到节拍数 - return ((UINT64)millisec * LOSCFG_BASE_CORE_TICK_PER_SECOND) / OS_SYS_MS_PER_SECOND; -} - -// 将节拍数转换为毫秒 -LITE_OS_SEC_TEXT_MINOR UINT32 LOS_Tick2MS(UINT32 tick) -{ - // 将节拍数乘以每秒毫秒数,再除以每秒节拍数,得到毫秒数 - return ((UINT64)tick * OS_SYS_MS_PER_SECOND) / LOSCFG_BASE_CORE_TICK_PER_SECOND; -} - -// 将纳秒转换为节拍数 -LITE_OS_SEC_TEXT_MINOR UINT32 OsNS2Tick(UINT64 nanoseconds) -{ - // 每个节拍的纳秒数 - const UINT32 nsPerTick = OS_SYS_NS_PER_SECOND / LOSCFG_BASE_CORE_TICK_PER_SECOND; - - // 将纳秒数加上每个节拍的纳秒数减1,再除以每个节拍的纳秒数,得到节拍数 - UINT64 ticks = (nanoseconds + nsPerTick - 1) / nsPerTick; - - // 如果节拍数超过最大值,将其设置为最大值 - if (ticks > OS_MAX_VALUE) { - ticks = OS_MAX_VALUE; - } - - // 将节拍数转换为32位整数并返回 - return (UINT32)ticks; -} - - - -