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Overview
| Comment: | Do exponential rather than linear expansion of the SrcList.a array when appending new elements, to reduce the number of malloc() calls. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
4e3749127e7249f46e17bfabc614b087 |
| User & Date: | drh 2016-12-15 18:59:14.960 |
Context
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2016-12-16
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| 01:00 | All temp.sqlite_master to be used as an alias for sqlite_temp_master. (check-in: 8d646905b8 user: drh tags: trunk) | |
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2016-12-15
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| 18:59 | Do exponential rather than linear expansion of the SrcList.a array when appending new elements, to reduce the number of malloc() calls. (check-in: 4e3749127e user: drh tags: trunk) | |
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2016-12-14
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| 14:07 | Refactor the Table.nRef field as Table.nTabRef for easier grepping. (check-in: 9cae4c2e30 user: drh tags: trunk) | |
Changes
Changes to src/build.c.
| ︙ | ︙ | |||
3654 3655 3656 3657 3658 3659 3660 |
assert( nExtra>=1 );
assert( pSrc!=0 );
assert( iStart<=pSrc->nSrc );
/* Allocate additional space if needed */
if( (u32)pSrc->nSrc+nExtra>pSrc->nAlloc ){
SrcList *pNew;
| | | 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 |
assert( nExtra>=1 );
assert( pSrc!=0 );
assert( iStart<=pSrc->nSrc );
/* Allocate additional space if needed */
if( (u32)pSrc->nSrc+nExtra>pSrc->nAlloc ){
SrcList *pNew;
int nAlloc = pSrc->nSrc*2+nExtra;
int nGot;
pNew = sqlite3DbRealloc(db, pSrc,
sizeof(*pSrc) + (nAlloc-1)*sizeof(pSrc->a[0]) );
if( pNew==0 ){
assert( db->mallocFailed );
return pSrc;
}
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| ︙ | ︙ |