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Overview
| Comment: | When extending the size of SrcList objects, do not attempt to use extra space on the end of the allocation, as that provides scarcely any performance benefit but does greatly complicate cross-platform testing. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
3087a0c31e9fbfaedb7cf10a2fda59bc |
| User & Date: | drh 2019-02-06 01:18:36 |
Context
|
2019-02-06
| ||
| 13:41 | Fix a problem preventing testfixture from being built with SQLITE_OMIT_VIRTUALTABLE. (check-in: d2cca36a user: dan tags: trunk) | |
| 01:18 | When extending the size of SrcList objects, do not attempt to use extra space on the end of the allocation, as that provides scarcely any performance benefit but does greatly complicate cross-platform testing. (check-in: 3087a0c3 user: drh tags: trunk) | |
| 00:55 | If the query flattener detects an error, cause the SELECT code generator to abort immediately. (check-in: 3d3b142f user: drh tags: trunk) | |
Changes
Changes to src/build.c.
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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;
sqlite3 *db = pParse->db;
if( pSrc->nSrc+nExtra>=SQLITE_MAX_SRCLIST ){
sqlite3ErrorMsg(pParse, "too many FROM clause terms, max: %d",
SQLITE_MAX_SRCLIST);
return 0;
}
................................................................................
pNew = sqlite3DbRealloc(db, pSrc,
sizeof(*pSrc) + (nAlloc-1)*sizeof(pSrc->a[0]) );
if( pNew==0 ){
assert( db->mallocFailed );
return 0;
}
pSrc = pNew;
nGot = (sqlite3DbMallocSize(db, pNew) - sizeof(*pSrc))/sizeof(pSrc->a[0])+1;
pSrc->nAlloc = nGot;
}
/* Move existing slots that come after the newly inserted slots
** out of the way */
for(i=pSrc->nSrc-1; i>=iStart; i--){
pSrc->a[i+nExtra] = pSrc->a[i];
}
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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;
sqlite3 *db = pParse->db;
if( pSrc->nSrc+nExtra>=SQLITE_MAX_SRCLIST ){
sqlite3ErrorMsg(pParse, "too many FROM clause terms, max: %d",
SQLITE_MAX_SRCLIST);
return 0;
}
................................................................................
pNew = sqlite3DbRealloc(db, pSrc,
sizeof(*pSrc) + (nAlloc-1)*sizeof(pSrc->a[0]) );
if( pNew==0 ){
assert( db->mallocFailed );
return 0;
}
pSrc = pNew;
pSrc->nAlloc = nAlloc;
}
/* Move existing slots that come after the newly inserted slots
** out of the way */
for(i=pSrc->nSrc-1; i>=iStart; i--){
pSrc->a[i+nExtra] = pSrc->a[i];
}
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