712 lines
18 KiB
C
Executable File
712 lines
18 KiB
C
Executable File
/*
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* Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020, 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_TASK_PRI_H
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#define _LOS_TASK_PRI_H
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#include "los_task.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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/**
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* @ingroup los_task
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* Null task ID
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*
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*/
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#define OS_TASK_ERRORID 0xFFFFFFFF
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/**
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* @ingroup los_task
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* Define a usable task priority.
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*
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* Highest task priority.
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*/
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#define OS_TASK_PRIORITY_HIGHEST 0
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/**
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* @ingroup los_task
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* Define a usable task priority.
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*
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* Lowest task priority.
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*/
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#define OS_TASK_PRIORITY_LOWEST 31
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* The task control block is unused.
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*/
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#define OS_TASK_STATUS_UNUSED 0x0001
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* The task is suspended.
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*/
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#define OS_TASK_STATUS_SUSPEND 0x0002
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* The task is ready.
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*/
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#define OS_TASK_STATUS_READY 0x0004
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* The task is blocked.
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*/
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#define OS_TASK_STATUS_PEND 0x0008
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* The task is running.
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*/
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#define OS_TASK_STATUS_RUNNING 0x0010
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* The task is delayed.
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*/
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#define OS_TASK_STATUS_DELAY 0x0020
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* The time for waiting for an event to occur expires.
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*/
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#define OS_TASK_STATUS_TIMEOUT 0x0040
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* The task is waiting for an event to occur.
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*/
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#define OS_TASK_STATUS_EVENT 0x0400
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* The task is reading an event.
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*/
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#define OS_TASK_STATUS_EVENT_READ 0x0800
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* A software timer is waiting for an event to occur.
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*/
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#define OS_TASK_STATUS_SWTMR_WAIT 0x1000
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/**
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* @ingroup los_task
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* Flag that indicates the task or task control block status.
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*
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* The task is blocked on a queue.
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*/
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#define OS_TASK_STATUS_PEND_QUEUE 0x2000
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/**
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* @ingroup los_task
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* Flag that indicates the task is in userspace.
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*
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* The task is a user task.
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*/
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#define OS_TASK_STATUS_USERSPACE 0x8000
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/**
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* @ingroup los_task
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* Boundary on which the stack size is aligned.
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*
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*/
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#define OS_TASK_STACK_SIZE_ALIGN 16
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/**
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* @ingroup los_task
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* Boundary on which the stack address is aligned.
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*
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*/
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#define OS_TASK_STACK_ADDR_ALIGN 8
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/**
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* @ingroup los_task
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* Task stack top magic number.
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*
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*/
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#define OS_TASK_MAGIC_WORD 0xCCCCCCCC
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/**
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* @ingroup los_task
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* Initial task stack value.
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*
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*/
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#define OS_TASK_STACK_INIT 0xCACACACA
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/**
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* @ingroup los_task
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* Number of usable task priorities.
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*/
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#define OS_TSK_PRINUM ((OS_TASK_PRIORITY_LOWEST - OS_TASK_PRIORITY_HIGHEST) + 1)
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/**
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* @ingroup los_task
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* @brief the num of delayed tasks bucket
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*/
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#define OS_TSK_SORTLINK_LEN 32
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/**
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* @ingroup los_task
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* @brief the bit width occupied by the delayed ticks of task
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*/
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#define OS_TSK_SORTLINK_LOGLEN 5
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/**
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* @ingroup los_task
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* @brief the mask of delayed tasks bucket id.
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*/
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#define OS_TSK_SORTLINK_MASK (OS_TSK_SORTLINK_LEN - 1)
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/**
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* @ingroup los_task
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* @brief the max task count for switch.
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*/
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#define OS_TASK_SWITCH_INFO_COUNT 0xA
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/**
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* @ingroup los_task
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* @brief Check whether a task ID is valid.
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*
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* @par Description:
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* This API is used to check whether a task ID, excluding the idle task ID, is valid.
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* @attention None.
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*
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* @param taskID [IN] Task ID.
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*
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* @retval 0 or 1. One indicates that the task ID is invalid, whereas zero indicates that the task ID is valid.
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* @par Dependency:
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* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
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* @see
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*/
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#define OS_TSK_GET_INDEX(taskID) (taskID)
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/**
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* @ingroup los_task
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* @brief Obtain the pointer to a task control block.
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*
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* @par Description:
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* This API is used to obtain the pointer to a task control block using a corresponding parameter.
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* @attention None.
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*
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* @param ptr [IN] Parameter used for obtaining the task control block.
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*
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* @retval Pointer to the task control block.
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* @par Dependency:
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* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
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* @see
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*/
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#define OS_TCB_FROM_PENDLIST(ptr) LOS_DL_LIST_ENTRY(ptr, LosTaskCB, pendList)
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/**
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* @ingroup los_task
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* @brief Obtain the pointer to a task control block.
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*
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* @par Description:
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* This API is used to obtain the pointer to a task control block that has a specified task ID.
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* @attention None.
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*
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* @param taskID [IN] task ID.
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*
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* @retval Pointer to the task control block.
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* @par Dependency:
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* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
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* @see
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*/
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#define OS_TCB_FROM_TID(taskID) (((LosTaskCB *)g_taskCBArray) + (taskID))
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#define OS_IDLE_TASK_ENTRY ((TSK_ENTRY_FUNC)OsIdleTask)
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/**
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* @ingroup los_task
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* Define the task control block structure.
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*/
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typedef struct {
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VOID *stackPointer; /**< Task stack pointer */
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UINT16 taskStatus;
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UINT16 priority;
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UINT32 stackSize; /**< Task stack size */
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UINT32 topOfStack; /**< Task stack top */
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UINT32 taskID; /**< Task ID */
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TSK_ENTRY_FUNC taskEntry; /**< Task entrance function */
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VOID *taskSem; /**< Task-held semaphore */
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VOID *taskMux; /**< Task-held mutex */
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UINT32 arg; /**< Parameter */
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CHAR *taskName; /**< Task name */
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LOS_DL_LIST pendList;
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LOS_DL_LIST timerList;
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UINT32 idxRollNum;
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EVENT_CB_S event;
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UINT32 eventMask; /**< Event mask */
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UINT32 eventMode; /**< Event mode */
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VOID *msg; /**< Memory allocated to queues */
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} LosTaskCB;
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typedef struct {
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LosTaskCB *runTask;
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LosTaskCB *newTask;
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} LosTask;
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typedef struct {
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LOS_DL_LIST *sortLink;
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UINT16 cursor;
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UINT16 unused;
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} TaskSortLinkAttr;
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/**
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* @ingroup los_task
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* Time slice structure.
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*/
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typedef struct TaskTimeSlice {
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LosTaskCB *task; /**< Current running task */
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UINT16 time; /**< Expiration time point */
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UINT16 tout; /**< Expiration duration */
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} OsTaskRobin;
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typedef struct {
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UINT8 maxCnt : 7; // bits [6:0] store count of task switch info
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UINT8 isFull : 1; // bit [7] store isfull status
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} TaskCountInfo;
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/**
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* @ingroup los_task
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* Task switch information structure.
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*
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*/
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typedef struct {
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UINT8 idx;
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TaskCountInfo cntInfo;
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UINT16 pid[OS_TASK_SWITCH_INFO_COUNT];
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CHAR name[OS_TASK_SWITCH_INFO_COUNT][LOS_TASK_NAMELEN];
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}TaskSwitchInfo;
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extern LosTask g_losTask;
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/**
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* @ingroup los_task
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* Task lock flag.
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*
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*/
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extern UINT16 g_losTaskLock;
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/**
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* @ingroup los_task
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* Maximum number of tasks.
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*
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*/
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extern UINT32 g_taskMaxNum;
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/**
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* @ingroup los_task
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* Idle task ID.
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*
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*/
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extern UINT32 g_idleTaskID;
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/**
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* @ingroup los_task
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* Software timer task ID.
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*
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*/
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extern UINT32 g_swtmrTaskID;
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/**
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* @ingroup los_task
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* Starting address of a task.
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*
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*/
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extern LosTaskCB *g_taskCBArray;
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/**
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* @ingroup los_task
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* Free task linked list.
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*
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*/
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extern LOS_DL_LIST g_losFreeTask;
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/**
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* @ingroup los_task
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* Circular linked list that stores tasks that are deleted automatically.
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*
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*/
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extern LOS_DL_LIST g_taskRecyleList;
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/**
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* @ingroup los_task
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* @brief the block status of task
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*/
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extern VOID OsTaskSchedule(VOID);
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/**
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* @ingroup los_task
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* @brief Modify the priority of task.
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*
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* @par Description:
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* This API is used to modify the priority of task.
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*
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* @attention
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* <ul>
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* <li>The taskCB should be a correct pointer to task control block structure.</li>
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* <li>the priority should be in [0, OS_TASK_PRIORITY_LOWEST].</li>
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* </ul>
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*
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* @param taskCB [IN] Type #LosTaskCB * pointer to task control block structure.
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* @param priority [IN] Type #UINT16 the priority of task.
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*
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* @retval None.
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* @par Dependency:
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* <ul><li>los_task_pri.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 OsTaskPriModify(LosTaskCB *taskCB, UINT16 priority);
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/**
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* @ingroup los_task
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* @brief Scan a task.
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*
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* @par Description:
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* This API is used to scan a task.
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*
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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_task_pri.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 OsTaskScan(VOID);
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/**
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* @ingroup los_task
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* @brief Initialization a task.
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*
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* @par Description:
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* This API is used to initialization a task.
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*
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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 UINT32 Initialization result.
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* @par Dependency:
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* <ul><li>los_task_pri.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 UINT32 OsTaskInit(VOID);
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/**
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* @ingroup los_task
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* @brief Create idle task.
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*
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* @par Description:
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* This API is used to create idle task.
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*
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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 UINT32 Create result.
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* @par Dependency:
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* <ul><li>los_task_pri.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 UINT32 OsIdleTaskCreate(VOID);
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/**
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* @ingroup los_task
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* @brief Check task switch.
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*
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* @par Description:
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* This API is used to check task switch.
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*
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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_task_pri.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 OsTaskSwitchCheck(VOID);
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/**
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* @ingroup los_task
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* @brief TaskMonInit.
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*
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* @par Description:
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* This API is used to taskMonInit.
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*
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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_task_pri.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 OsTaskMonInit(VOID);
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/**
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* @ingroup los_task
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* @brief Task entry.
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*
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* @par Description:
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* This API is used to task entry.
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*
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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 taskID [IN] Type #UINT32 task id.
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*
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* @retval None.
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* @par Dependency:
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* <ul><li>los_task_pri.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 OsTaskEntry(UINT32 taskID);
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/**
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* @ingroup los_task
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* @brief pend running task to pendlist
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*
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* @par Description:
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* This API is used to pend task to pendlist and add to sorted delay list.
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*
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* @attention
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* <ul>
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* <li>The pstList should be a vaild pointer to pendlist.</li>
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* </ul>
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*
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* @param list [IN] Type #LOS_DL_LIST * pointer to list which running task will be pended.
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* @param taskStatus [IN] Type #UINT32 Task Status.
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* @param timeOut [IN] Type #UINT32 Expiry time. The value range is [0,LOS_WAIT_FOREVER].
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*
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* @retval LOS_OK wait success
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* @retval LOS_NOK pend out
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* @par Dependency:
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* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
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* @see OsTaskWake
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*/
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extern VOID OsTaskWait(LOS_DL_LIST *list, UINT32 taskStatus, UINT32 timeOut);
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/**
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* @ingroup los_task
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* @brief delete task from pendlist.
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*
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* @par Description:
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* This API is used to delete task from pendlist and also add to the priqueue.
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*
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* @attention
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* <ul>
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* <li>The pstList should be a vaild pointer to pend list.</li>
|
|
* </ul>
|
|
*
|
|
* @param resumedTask [IN] Type #LosTaskCB * pointer to the task which will be add to priqueue.
|
|
* @param taskStatus [IN] Type #UINT32 Task Status.
|
|
*
|
|
* @retval None.
|
|
* @par Dependency:
|
|
* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
|
|
* @see OsTaskWait
|
|
*/
|
|
extern VOID OsTaskWake(LosTaskCB *resumedTask, UINT32 taskStatus);
|
|
|
|
/**
|
|
* @ingroup los_task
|
|
* @brief Get the task water line.
|
|
*
|
|
* @par Description:
|
|
* This API is used to get the task water line.
|
|
*
|
|
* @attention
|
|
* <ul>
|
|
* <li>None.</li>
|
|
* </ul>
|
|
*
|
|
* @param taskID [IN] Type #UINT32 task id.
|
|
*
|
|
* @retval UINT32 Task water line.
|
|
* @par Dependency:
|
|
* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
|
|
* @see None.
|
|
*/
|
|
extern UINT32 OsGetTaskWaterLine(UINT32 taskID);
|
|
|
|
/**
|
|
* @ingroup los_task
|
|
* @brief Convert task status to string.
|
|
*
|
|
* @par Description:
|
|
* This API is used to convert task status to string.
|
|
*
|
|
* @attention
|
|
* <ul>
|
|
* <li>None.</li>
|
|
* </ul>
|
|
*
|
|
* @param taskStatus [IN] Type #UINT16 task status.
|
|
*
|
|
* @retval UINT8 * String.
|
|
* @par Dependency:
|
|
* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
|
|
* @see None.
|
|
*/
|
|
extern UINT8 *OsConvertTskStatus(UINT16 taskStatus);
|
|
|
|
/**
|
|
* @ingroup los_task
|
|
* @brief Add task to sorted delay list.
|
|
*
|
|
* @par Description:
|
|
* This API is used to add task to sorted delay list.
|
|
*
|
|
* @attention
|
|
* <ul>
|
|
* <li>The taskCB should be a correct pointer to task control block structure.</li>
|
|
* </ul>
|
|
*
|
|
* @param taskCB [IN] Type #LosTaskCB * pointer to task control block structure.
|
|
* @param timeout [IN] Type #UINT32 wait time, ticks.
|
|
*
|
|
* @retval None.
|
|
* @par Dependency:
|
|
* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
|
|
* @see OsTimerListDelete
|
|
*/
|
|
extern VOID OsTaskAdd2TimerList(LosTaskCB *taskCB, UINT32 timeout);
|
|
|
|
/**
|
|
* @ingroup los_task
|
|
* @brief delete task from sorted delay list.
|
|
*
|
|
* @par Description:
|
|
* This API is used to delete task from sorted delay list.
|
|
*
|
|
* @attention
|
|
* <ul>
|
|
* <li>The taskCB should be a correct pointer to task control block structure.</li>
|
|
* </ul>
|
|
*
|
|
* @param taskCB [IN] Type #LosTaskCB * pointer to task control block structure.
|
|
*
|
|
* @retval None.
|
|
* @par Dependency:
|
|
* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
|
|
* @see OsTaskAdd2TimerList
|
|
*/
|
|
extern VOID OsTimerListDelete(LosTaskCB *taskCB);
|
|
|
|
/**
|
|
* @ingroup los_task
|
|
* @brief Get all task information.
|
|
*
|
|
* @par Description:
|
|
* This API is used to get all task information.
|
|
*
|
|
* @attention
|
|
* <ul>
|
|
* <li>None.</li>
|
|
* </ul>
|
|
*
|
|
* @param None.
|
|
*
|
|
* @retval UINT32 All task information.
|
|
* @par Dependency:
|
|
* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
|
|
* @see None.
|
|
*/
|
|
extern UINT32 OsGetAllTskInfo(VOID);
|
|
|
|
|
|
extern VOID *OsTskUserStackInit(VOID* stackPtr, VOID* userSP, UINT32 userStackSize);
|
|
|
|
extern VOID *OsTskStackInit(UINT32 taskID, UINT32 stackSize, VOID *topStack);
|
|
|
|
extern VOID OsSchedule(VOID);
|
|
|
|
extern VOID osTaskSchedule(VOID);
|
|
|
|
#ifdef __cplusplus
|
|
#if __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
#endif /* __cplusplus */
|
|
|
|
#endif /* _LOS_TASK_PRI_H */
|