111 lines
3.4 KiB
C
Executable File
111 lines
3.4 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_MUX_PRI_H
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#define _LOS_MUX_PRI_H
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#include "los_task_pri.h"
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#include "los_mux.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_mux
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* Mutex object.
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*/
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typedef struct {
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UINT8 muxStat; /**< State OS_MUX_UNUSED,OS_MUX_USED */
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UINT16 muxCount; /**< Times of locking a mutex */
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UINT32 muxID; /**< Handle ID */
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LOS_DL_LIST muxList; /**< Mutex linked list */
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LosTaskCB *owner; /**< The current thread that is locking a mutex */
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UINT16 priority; /**< Priority of the thread that is locking a mutex */
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} LosMuxCB;
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/**
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* @ingroup los_mux
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* Mutex state: not in use.
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*/
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#define OS_MUX_UNUSED 0
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/**
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* @ingroup los_mux
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* Mutex state: in use.
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*/
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#define OS_MUX_USED 1
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extern LosMuxCB *g_allMux;
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/**
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* @ingroup los_mux
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* Obtain the pointer to a mutex object of the mutex that has a specified handle.
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*/
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#define GET_MUX(muxid) (((LosMuxCB *)g_allMux) + (muxid))
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/**
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* @ingroup los_mux
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* @brief Initializes the mutex.
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*
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* @par Description:
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* This API is used to initializes the mutex.
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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_mux_pri.h: the header file that contains the API declaration.</li></ul>
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* @see LOS_MuxDelete
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*/
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extern UINT32 OsMuxInit(VOID);
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/**
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* @ingroup los_mux
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* Obtain the pointer to the linked list in the mutex pointed to by a specified pointer.
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*/
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#define GET_MUX_LIST(ptr) LOS_DL_LIST_ENTRY(ptr, LosMuxCB, muxList)
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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_MUX_PRI_H */
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