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/****************************************************************************
(c) SYSTEC electronic GmbH, D-07973 Greiz, August-Bebel-Str. 29
www.systec-electronic.com
Project: Project independend shared buffer (linear + circular)
Description: Declaration of platform independend part for the
shared buffer
License:
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of SYSTEC electronic GmbH nor the names of its
contributors may be used to endorse or promote products derived
from this software without prior written permission. For written
permission, please contact info@systec-electronic.com.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Severability Clause:
If a provision of this License is or becomes illegal, invalid or
unenforceable in any jurisdiction, that shall not affect:
1. the validity or enforceability in that jurisdiction of any other
provision of this License; or
2. the validity or enforceability in other jurisdictions of that or
any other provision of this License.
-------------------------------------------------------------------------
2006/06/27 -rs: V 1.00 (initial version)
****************************************************************************/
#ifndef _SHAREDBUFF_H_
#define _SHAREDBUFF_H_
//---------------------------------------------------------------------------
// Type definitions
//---------------------------------------------------------------------------
typedef enum {
kShbOk = 0,
kShbNoReadableData = 1,
kShbDataTruncated = 2,
kShbBufferFull = 3,
kShbDataOutsideBufferArea = 4,
kShbBufferAlreadyCompleted = 5,
kShbMemUsedByOtherProcs = 6,
kShbOpenMismatch = 7,
kShbInvalidBufferType = 8,
kShbInvalidArg = 9,
kShbBufferInvalid = 10,
kShbOutOfMem = 11,
kShbAlreadyReseting = 12,
kShbAlreadySignaling = 13,
kShbExceedDataSizeLimit = 14,
} tShbError;
// 2006/08/24 d.k.: Priority for threads (new data, job signaling)
typedef enum {
kShbPriorityLow = 0,
kShbPriorityNormal = 1,
kshbPriorityHigh = 2
} tShbPriority;
typedef struct {
unsigned int m_uiFullBlockSize; // real size of allocated block (incl. alignment fill bytes)
unsigned long m_ulAvailableSize; // still available size for data
unsigned long m_ulWrIndex; // current write index
unsigned int m_fBufferCompleted; // TRUE if allocated block is complete filled with data
} tShbCirChunk;
typedef void *tShbInstance;
typedef void (*tShbCirSigHndlrNewData) (tShbInstance pShbInstance_p,
unsigned long ulDataBlockSize_p);
typedef void (*tShbCirSigHndlrReset) (tShbInstance pShbInstance_p,
unsigned int fTimeOut_p);
//---------------------------------------------------------------------------
// Prototypes
//---------------------------------------------------------------------------
#ifdef __cplusplus
extern "C" {
#endif
tShbError ShbInit(void);
tShbError ShbExit(void);
// Circular Shared Buffer
tShbError ShbCirAllocBuffer(unsigned long ulBufferSize_p,
const char *pszBufferID_p,
tShbInstance * ppShbInstance_p,
unsigned int *pfShbNewCreated_p);
tShbError ShbCirReleaseBuffer(tShbInstance pShbInstance_p);
tShbError ShbCirResetBuffer(tShbInstance pShbInstance_p,
unsigned long ulTimeOut_p,
tShbCirSigHndlrReset
pfnSignalHandlerReset_p);
tShbError ShbCirWriteDataBlock(tShbInstance pShbInstance_p,
const void *pSrcDataBlock_p,
unsigned long ulDataBlockSize_p);
tShbError ShbCirAllocDataBlock(tShbInstance pShbInstance_p,
tShbCirChunk * pShbCirChunk_p,
unsigned long ulDataBufferSize_p);
tShbError ShbCirWriteDataChunk(tShbInstance pShbInstance_p,
tShbCirChunk * pShbCirChunk_p,
const void *pSrcDataChunk_p,
unsigned long ulDataChunkSize_p,
unsigned int *pfBufferCompleted_p);
tShbError ShbCirReadDataBlock(tShbInstance pShbInstance_p,
void *pDstDataBlock_p,
unsigned long ulRdBuffSize_p,
unsigned long *pulDataBlockSize_p);
tShbError ShbCirGetReadDataSize(tShbInstance pShbInstance_p,
unsigned long *pulDataBlockSize_p);
tShbError ShbCirGetReadBlockCount(tShbInstance pShbInstance_p,
unsigned long *pulDataBlockCount_p);
tShbError ShbCirSetSignalHandlerNewData(tShbInstance pShbInstance_p,
tShbCirSigHndlrNewData
pfnShbSignalHandlerNewData_p,
tShbPriority ShbPriority_p);
// Linear Shared Buffer
tShbError ShbLinAllocBuffer(unsigned long ulBufferSize_p,
const char *pszBufferID_p,
tShbInstance * ppShbInstance_p,
unsigned int *pfShbNewCreated_p);
tShbError ShbLinReleaseBuffer(tShbInstance pShbInstance_p);
tShbError ShbLinWriteDataBlock(tShbInstance pShbInstance_p,
unsigned long ulDstBufferOffs_p,
const void *pSrcDataBlock_p,
unsigned long ulDataBlockSize_p);
tShbError ShbLinReadDataBlock(tShbInstance pShbInstance_p,
void *pDstDataBlock_p,
unsigned long ulSrcBufferOffs_p,
unsigned long ulDataBlockSize_p);
#ifndef NDEBUG
tShbError ShbCirTraceBuffer(tShbInstance pShbInstance_p);
tShbError ShbLinTraceBuffer(tShbInstance pShbInstance_p);
tShbError ShbTraceDump(const unsigned char *pabStartAddr_p,
unsigned long ulDataSize_p,
unsigned long ulAddrOffset_p,
const char *pszInfoText_p);
#else
#define ShbCirTraceBuffer(p0)
#define ShbLinTraceBuffer(p0)
#define ShbTraceDump(p0, p1, p2, p3)
#endif
#ifdef __cplusplus
}
#endif
#endif // #ifndef _SHAREDBUFF_H_
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