148 lines
4.0 KiB
C
Executable File
148 lines
4.0 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_LOCKDEP_H
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#define _LOS_LOCKDEP_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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typedef struct Spinlock SPIN_LOCK_S;
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#define MAX_LOCK_DEPTH 16U
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enum LockDepErrType {
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LOCKDEP_SUCEESS = 0,
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LOCKDEP_ERR_DOUBLE_LOCK,
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LOCKDEP_ERR_DEAD_LOCK,
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LOCKDEP_ERR_UNLOCK_WITOUT_LOCK,
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/* overflow, needs expand */
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LOCKDEP_ERR_OVERFLOW,
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};
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typedef struct {
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VOID *lockPtr;
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VOID *lockAddr;
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UINT64 waitTime;
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UINT64 holdTime;
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} HeldLocks;
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typedef struct {
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VOID *waitLock;
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INT32 lockDepth;
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HeldLocks heldLocks[MAX_LOCK_DEPTH];
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} LockDep;
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/**
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* @ingroup los_lockdep
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*
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* @par Description:
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* This API is used to check dead lock in spinlock.
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* @attention
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* <ul>
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* <li>The parameter passed in should be ensured to be a legal pointer.</li>
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* </ul>
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*
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* @param lock [IN] point to a SPIN_LOCK_S.
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*
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* @retval None.
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* @par Dependency:
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* <ul><li>los_lockdep.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 OsLockDepCheckIn(SPIN_LOCK_S *lock);
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/**
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* @ingroup los_lockdep
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*
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* @par Description:
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* This API is used to trace when a spinlock locked.
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* @attention
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* <ul>
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* <li>The parameter passed in should be ensured to be a legal pointer.</li>
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* </ul>
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*
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* @param lock [IN] point to a SPIN_LOCK_S.
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*
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* @retval None.
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* @par Dependency:
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* <ul><li>los_lockdep.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 OsLockDepRecord(SPIN_LOCK_S *lock);
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/**
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* @ingroup los_lockdep
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*
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* @par Description:
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* This API is used to trace when a spinlock unlocked.
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* @attention
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* <ul>
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* <li>The parameter passed in should be ensured to be a legal pointer.</li>
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* </ul>
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*
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* @param lock [IN] point to a SPIN_LOCK_S.
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*
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* @retval None.
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* @par Dependency:
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* <ul><li>los_lockdep.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 OsLockDepCheckOut(SPIN_LOCK_S *lock);
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/**
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* @ingroup los_lockdep
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*
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* @par Description:
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* This API is used to clear lockdep record of curret task.
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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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* @retval None.
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* @par Dependency:
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* <ul><li>los_lockdep.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 OsLockdepClearSpinlocks(VOID);
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#ifdef __cplusplus
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#if __cplusplus
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}
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#endif
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#endif /* __cplusplus */
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#endif /* _LOS_LOCKDEP_H */
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