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Overview
Comment: | Change a while-loop into a do-loop in sqlite3VdbeSerialPut() for a small size reduction and performance improvement. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
750bb0a0960606ab24037e0992e9f7a1 |
User & Date: | drh 2014-08-22 13:22:32.819 |
Context
2014-08-22
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15:19 | Improve the performance and reduce the size of the sqlite3VdbeSerialGet() routine by avoiding the use of stack. (check-in: ebc10e46c1 user: drh tags: trunk) | |
14:34 | Get the sqlite3VdbeSerialGet() routine to run faster by avoiding the use of local variables. (check-in: 8267d82174 user: drh tags: experimental) | |
13:22 | Change a while-loop into a do-loop in sqlite3VdbeSerialPut() for a small size reduction and performance improvement. (check-in: 750bb0a096 user: drh tags: trunk) | |
11:11 | Enhance the spellfix extension with the ability to specify a rowid when inserting new rows. (check-in: 369c480cda user: drh tags: trunk) | |
Changes
Changes to src/vdbeaux.c.
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2929 2930 2931 2932 2933 2934 2935 | assert( sizeof(v)==sizeof(pMem->r) ); memcpy(&v, &pMem->r, sizeof(v)); swapMixedEndianFloat(v); }else{ v = pMem->u.i; } len = i = sqlite3VdbeSerialTypeLen(serial_type); | | > | | | 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 | assert( sizeof(v)==sizeof(pMem->r) ); memcpy(&v, &pMem->r, sizeof(v)); swapMixedEndianFloat(v); }else{ v = pMem->u.i; } len = i = sqlite3VdbeSerialTypeLen(serial_type); assert( i>0 ); do{ buf[--i] = (u8)(v&0xFF); v >>= 8; }while( i ); return len; } /* String or blob */ if( serial_type>=12 ){ assert( pMem->n + ((pMem->flags & MEM_Zero)?pMem->u.nZero:0) == (int)sqlite3VdbeSerialTypeLen(serial_type) ); |
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