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Overview
Comment: | Performance optimizations for the delta generator. |
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Downloads: | Tarball | ZIP archive | SQL archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
dbbe320297e55cb4396cd6c2461deb80 |
User & Date: | drh 2015-12-27 20:05:36 |
Context
2015-12-27
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21:02 | Further performance enhancements on the delta generator. ... (check-in: 09d3e7eb user: drh tags: trunk) | |
20:05 | Performance optimizations for the delta generator. ... (check-in: dbbe3202 user: drh tags: trunk) | |
18:49 | For the "fossil server" command, set the HTTP_SERVER_HAD_REPOSITORY and HTTP_SERVER_HAD_CHECKOUT flags just as they would have been with the "fossil ui" command. ... (check-in: e4e09884 user: drh tags: trunk) | |
Changes
Changes to src/delta.c.
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387 388 389 390 391 392 393 394 395 396 397 | ** sz will be the overhead (in bytes) needed to encode the copy ** command. Only generate copy command if the overhead of the ** copy command is less than the amount of literal text to be copied. */ int cnt, ofst, litsz; int j, k, x, y; int sz; /* Beginning at iSrc, match forwards as far as we can. j counts ** the number of characters that match */ iSrc = iBlock*NHASH; | > | > > | | 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 | ** sz will be the overhead (in bytes) needed to encode the copy ** command. Only generate copy command if the overhead of the ** copy command is less than the amount of literal text to be copied. */ int cnt, ofst, litsz; int j, k, x, y; int sz; int limitX; /* Beginning at iSrc, match forwards as far as we can. j counts ** the number of characters that match */ iSrc = iBlock*NHASH; y = base+i; limitX = ( lenSrc-iSrc <= lenOut-y ) ? lenSrc : iSrc + lenOut - y; for(x=iSrc; x<limitX; x++, y++){ if( zSrc[x]!=zOut[y] ) break; } j = x - iSrc - 1; /* Beginning at iSrc-1, match backwards as far as we can. k counts ** the number of characters that match */ for(k=1; k<iSrc && k<=i; k++){ if( zSrc[iSrc-k]!=zOut[base+i-k] ) break; } k--; |
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