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Overview
| Comment: | Remove some code in the column cache that is no longer used. Replace it with an assert(). |
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| SHA1: |
1f890efb7863bd743b9f6ef841e0c0c4 |
| User & Date: | drh 2009-12-30 01:13:12.000 |
Context
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2009-12-30
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| 14:12 | Adjustments to column cache handling in order to restore 100% branch test coverage. (check-in: cc6b959bc1 user: drh tags: trunk) | |
| 01:13 | Remove some code in the column cache that is no longer used. Replace it with an assert(). (check-in: 1f890efb78 user: drh tags: trunk) | |
| 00:12 | Remove obsolete comment text from expr.c. No functional code changes. (check-in: 84058be0be user: drh tags: trunk) | |
Changes
Changes to src/expr.c.
| ︙ | ︙ | |||
1960 1961 1962 1963 1964 1965 1966 | /* The SQLITE_ColumnCache flag disables the column cache. This is used ** for testing only - to verify that SQLite always gets the same answer ** with and without the column cache. */ if( pParse->db->flags & SQLITE_ColumnCache ) return; | | > > > > > > > > > | 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 |
/* The SQLITE_ColumnCache flag disables the column cache. This is used
** for testing only - to verify that SQLite always gets the same answer
** with and without the column cache.
*/
if( pParse->db->flags & SQLITE_ColumnCache ) return;
/* First replace any existing entry.
**
** Actually, the way the column cache is currently used, we are guaranteed
** that the object will never already be in cache. Verify this guarantee.
*/
#ifndef NDEBUG
for(i=0, p=pParse->aColCache; i<SQLITE_N_COLCACHE; i++, p++){
#if 0 /* This code wold remove the entry from the cache if it existed */
if( p->iReg && p->iTable==iTab && p->iColumn==iCol ){
cacheEntryClear(pParse, p);
p->iLevel = pParse->iCacheLevel;
p->iReg = iReg;
p->lru = pParse->iCacheCnt++;
return;
}
#endif
assert( p->iReg==0 || p->iTable!=iTab || p->iColumn!=iCol );
}
#endif
/* Find an empty slot and replace it */
for(i=0, p=pParse->aColCache; i<SQLITE_N_COLCACHE; i++, p++){
if( p->iReg==0 ){
p->iLevel = pParse->iCacheLevel;
p->iTable = iTab;
p->iColumn = iCol;
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