88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
/*
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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_CIRBUF_PRI_H
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#define _LOS_CIRBUF_PRI_H
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#include "los_typedef.h"
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#include "los_spinlock.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 enum {
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CBUF_UNUSED,
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CBUF_USED
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} CirBufStatus;
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typedef struct {
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UINT32 startIdx;
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UINT32 endIdx;
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UINT32 size;
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UINT32 remain;
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SPIN_LOCK_S lock;
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CirBufStatus status;
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CHAR *fifo;
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} CirBuf;
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STATIC INLINE VOID LOS_CirBufLock(CirBuf *cirbufCB, UINT32 *intSave)
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{
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if (cirbufCB == NULL) {
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return;
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}
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LOS_SpinLockSave(&cirbufCB->lock, intSave);
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}
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STATIC INLINE VOID LOS_CirBufUnlock(CirBuf *cirbufCB, UINT32 intSave)
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{
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if (cirbufCB == NULL) {
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return;
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}
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LOS_SpinUnlockRestore(&cirbufCB->lock, intSave);
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}
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extern UINT32 LOS_CirBufInit(CirBuf *cirbufCB, CHAR *fifo, UINT32 size);
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extern VOID LOS_CirBufDeinit(CirBuf *cirbufCB);
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extern UINT32 LOS_CirBufWrite(CirBuf *cirbufCB, const CHAR *buf, UINT32 size);
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extern UINT32 LOS_CirBufRead(CirBuf *cirbufCB, CHAR *buf, UINT32 size);
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extern UINT32 LOS_CirBufUsedSize(CirBuf *cirbufCB);
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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_CIRBUF_PRI_H */
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