64 lines
2.9 KiB
C
64 lines
2.9 KiB
C
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 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_FUTEX_PRI_H
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#define _LOS_FUTEX_PRI_H
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#include "los_list.h"
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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#define FUTEX_REQUEUE 3
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#define FUTEX_WAKE_OP 5
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#define FUTEX_LOCK_PI 6
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#define FUTEX_UNLOCK_PI 7
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#define FUTEX_TRYLOCK_PI 8
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#define FUTEX_WAIT_BITSET 9
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#define FUTEX_PRIVATE 128
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#define FUTEX_MASK 0x3U
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typedef struct {
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UINTPTR key; /* private:uvaddr shared:paddr */
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UINT32 index; /* hash bucket index */
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UINT32 pid; /* private:process id shared:OS_INVALID(-1) */
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LOS_DL_LIST pendList; /* point to pendList in TCB struct */
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LOS_DL_LIST queueList; /* thread list blocked by this lock */
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LOS_DL_LIST futexList; /* point to the next FutexNode */
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} FutexNode;
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extern UINT32 OsFutexInit(VOID);
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extern VOID OsFutexNodeDeleteFromFutexHash(FutexNode *node, BOOL isDeleteHead, FutexNode **headNode, BOOL *queueFlags);
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extern INT32 OsFutexWake(const UINT32 *userVaddr, UINT32 flags, INT32 wakeNumber);
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extern INT32 OsFutexWait(const UINT32 *userVaddr, UINT32 flags, UINT32 val, UINT32 absTime);
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extern INT32 OsFutexRequeue(const UINT32 *userVaddr, UINT32 flags, INT32 wakeNumber,
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INT32 count, const UINT32 *newUserVaddr);
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#endif
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