58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TD_UTIL_CHECKSUM_H_
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#define _TD_UTIL_CHECKSUM_H_
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#include "tcrc32c.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef uint32_t TSCKSUM;
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static FORCE_INLINE TSCKSUM taosCalcChecksum(TSCKSUM csi, const uint8_t *stream, uint32_t ssize) {
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return (*crc32c)(csi, stream, (size_t)ssize);
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}
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static FORCE_INLINE int32_t taosCalcChecksumAppend(TSCKSUM csi, uint8_t *stream, uint32_t ssize) {
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if (ssize < sizeof(TSCKSUM)) return -1;
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*((TSCKSUM *)(stream + ssize - sizeof(TSCKSUM))) = (*crc32c)(csi, stream, (size_t)(ssize - sizeof(TSCKSUM)));
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return 0;
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}
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static FORCE_INLINE int32_t taosCheckChecksum(const uint8_t *stream, uint32_t ssize, TSCKSUM checksum) {
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return (checksum != (*crc32c)(0, stream, (size_t)ssize));
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}
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static FORCE_INLINE int32_t taosCheckChecksumWhole(const uint8_t *stream, uint32_t ssize) {
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if (ssize < sizeof(TSCKSUM)) return 0;
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#if (_WIN64)
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return 1;
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#else
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return *((TSCKSUM *)(stream + ssize - sizeof(TSCKSUM))) == (*crc32c)(0, stream, (size_t)(ssize - sizeof(TSCKSUM)));
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#endif
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /*_TD_UTIL_CHECKSUM_H_*/
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