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Overview
Comment: | Small performance and size optimization in sqlite3WalFindFrame(). |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
03f2e78899fad99b0a0951b3a4082682 |
User & Date: | drh 2019-04-17 21:12:05.934 |
Context
2019-04-19
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13:38 | Streamline the processing of the AND operator. Slightly smaller and faster. (check-in: 7713996aa9 user: drh tags: trunk) | |
2019-04-18
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19:21 | Minor simplification of NULL value handling for STAT4. (Closed-Leaf check-in: 5718a9d5fc user: mistachkin tags: nullStat4) | |
2019-04-17
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23:32 | Work around lack of a C99 feature in MSVC. (check-in: f6ebe1c2be user: mistachkin tags: msvc) | |
21:12 | Small performance and size optimization in sqlite3WalFindFrame(). (check-in: 03f2e78899 user: drh tags: trunk) | |
13:58 | Fix a typo in the CLI help output for the ".dump" command. (check-in: 57638248de user: drh tags: trunk) | |
Changes
Changes to src/wal.c.
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2904 2905 2906 2907 2908 2909 2910 | rc = walHashGet(pWal, iHash, &sLoc); if( rc!=SQLITE_OK ){ return rc; } nCollide = HASHTABLE_NSLOT; for(iKey=walHash(pgno); sLoc.aHash[iKey]; iKey=walNextHash(iKey)){ | | > | < | 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 | rc = walHashGet(pWal, iHash, &sLoc); if( rc!=SQLITE_OK ){ return rc; } nCollide = HASHTABLE_NSLOT; for(iKey=walHash(pgno); sLoc.aHash[iKey]; iKey=walNextHash(iKey)){ u32 iH = sLoc.aHash[iKey]; u32 iFrame = iH + sLoc.iZero; if( iFrame<=iLast && iFrame>=pWal->minFrame && sLoc.aPgno[iH]==pgno ){ assert( iFrame>iRead || CORRUPT_DB ); iRead = iFrame; } if( (nCollide--)==0 ){ return SQLITE_CORRUPT_BKPT; } } |
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