函数逻辑报告 |
Source Code:lib\zstd\zstd_opt.h |
Create Date:2022-07-27 08:02:42 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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函数名称:ZSTD_compressBlock_opt_extDict_generic
函数原型:void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx *ctx, const void *src, size_t srcSize, const int ultra)
返回类型:void
参数:
类型 | 参数 | 名称 |
---|---|---|
ZSTD_CCtx * | ctx | |
const void * | src | |
size_t | srcSize | |
const int | ultra |
702 | seqStorePtr等于seqStore的地址 |
709 | lowestIndex等于lowLimit |
711 | prefixStart等于base加dictLimit |
715 | maxSearches等于1U左移searchLog位 |
717 | mls等于searchLength |
718 | minMatch等于如果searchLength恒等于3则3否则4 |
721 | matches等于matchTable |
733 | ZSTD_rescaleFreqs(seqStorePtr, (constBYTE * )src, srcSize) |
734 | ip加等于ip恒等于prefixStart |
741 | memset(opt, 0, sizeof(ZSTD_optimal_t)) |
742 | last_pos等于0 |
753 | 如果repCur大于0且repCur小于等于curr且dictLimit减1减repIndex大于等于3按位与repIndex大于lowestIndex且 safe only for comparisons 恒等于 safe only for comparisons 则 |
780 | match_num等于ZSTD_BtGetAllMatches_selectMLS_extDict(ctx, ip, iend, maxSearches, mls, matches, minMatch) |
792 | mlen等于1 |
818 | ip自加 |
819 | 继续下一循环 |
826 | 如果mlen恒等于1则 |
829 | price等于price加ZSTD_getLiteralPrice(seqStorePtr, litlen, inr - litlen) |
830 | 否则price等于ZSTD_getLiteralPrice(seqStorePtr, litlen, anchor) |
832 | 否则 |
833 | litlen等于1 |
834 | price等于price加ZSTD_getLiteralPrice(seqStorePtr, litlen, inr - 1) |
847 | 如果off大于ZSTD_REP_MOVE_OPT则 |
851 | 否则 |
866 | 如果repCur大于0且repCur小于等于curr加cur且dictLimit减1减repIndex大于等于3按位与repIndex大于lowestIndex且 safe only for comparisons 恒等于 safe only for comparisons 则 |
871 | mlen等于ZSTD_count_2segments() :* can count match length with `ip` & `match` in 2 different segments.* convention : on reaching mEnd, match count continue starting from iStart加minMatch |
884 | 循环 |
905 | match_num等于ZSTD_BtGetAllMatches_selectMLS_extDict(ctx, inr, iend, maxSearches, mls, matches, minMatch) |
920 | 如果mlen恒等于1则 |
922 | 如果cur大于litlen则price等于price加ZSTD_getPrice(seqStorePtr, litlen, ip + cur - litlen, off - 1, mlen - MINMATCH, ultra) |
925 | 否则price等于ZSTD_getPrice(seqStorePtr, litlen, anchor, off - 1, mlen - MINMATCH, ultra) |
927 | 否则 |
928 | litlen等于0 |
929 | price等于price加ZSTD_getPrice(seqStorePtr, 0, NULL, off - 1, mlen - MINMATCH, ultra) |
935 | mlen自加 |
945 | _storeSequence : |
946 | mlen等于1 |
948 | 当1循环 |
966 | 如果mlen恒等于1则 |
975 | 如果offset大于ZSTD_REP_MOVE_OPT则 |
980 | 否则 |
981 | 如果offset不等于0则 |
993 | ZSTD_updatePrice(seqStorePtr, litLength, anchor, offset, mlen - MINMATCH) |
1002 | 以i小于umber of repcodes 循环repToConfirm[i]等于rep[i] |
1008 | lastLLSize等于iend减anchor |
1009 | 内存复制(lit, anchor, lastLLSize) |
1010 | lit加等于lastLLSize |
源代码转换工具 开放的插件接口 | X |
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支持:c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现:逻辑报告 代码生成和批量转换代码 |