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Overview
| Comment: | Ensure that compatible malloc and free functions are used with stat3 data if SQLITE_ENABLE_STAT3 is defined. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
32bb1ecee4e43a4683512dbca047abf7 |
| User & Date: | dan 2012-03-19 10:21:37 |
Context
|
2012-03-19
| ||
| 14:28 | Avoid a compiler warning (an incorrect compiler warning, at that) in vs2010. check-in: 7dd97f12 user: drh tags: trunk | |
| 11:17 | Merge the latest trunk changes into the sessions branch. check-in: 2277c70b user: dan tags: sessions | |
| 10:21 | Ensure that compatible malloc and free functions are used with stat3 data if SQLITE_ENABLE_STAT3 is defined. check-in: 32bb1ece user: dan tags: trunk | |
|
2012-03-17
| ||
| 15:12 | In pager1.test, use "file attr test.db -readonly 0" before "file attr test.db -perm rw-rw-rw-", not after. check-in: 4f5283f1 user: dan tags: trunk | |
Changes
Changes to src/analyze.c.
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sqlite3_stmt *pStmt = 0; /* An SQL statement being run */
char *zSql; /* Text of the SQL statement */
Index *pPrevIdx = 0; /* Previous index in the loop */
int idx = 0; /* slot in pIdx->aSample[] for next sample */
int eType; /* Datatype of a sample */
IndexSample *pSample; /* A slot in pIdx->aSample[] */
if( !sqlite3FindTable(db, "sqlite_stat3", zDb) ){
return SQLITE_OK;
}
zSql = sqlite3MPrintf(db,
"SELECT idx,count(*) FROM %Q.sqlite_stat3"
" GROUP BY idx", zDb);
................................................................................
zIndex = (char *)sqlite3_column_text(pStmt, 0);
if( zIndex==0 ) continue;
nSample = sqlite3_column_int(pStmt, 1);
pIdx = sqlite3FindIndex(db, zIndex, zDb);
if( pIdx==0 ) continue;
assert( pIdx->nSample==0 );
pIdx->nSample = nSample;
pIdx->aSample = sqlite3MallocZero( nSample*sizeof(IndexSample) );
pIdx->avgEq = pIdx->aiRowEst[1];
if( pIdx->aSample==0 ){
db->mallocFailed = 1;
sqlite3_finalize(pStmt);
return SQLITE_NOMEM;
}
}
................................................................................
sqlite3_column_text(pStmt, 4)
);
int n = z ? sqlite3_column_bytes(pStmt, 4) : 0;
pSample->nByte = n;
if( n < 1){
pSample->u.z = 0;
}else{
pSample->u.z = sqlite3Malloc(n);
if( pSample->u.z==0 ){
db->mallocFailed = 1;
sqlite3_finalize(pStmt);
return SQLITE_NOMEM;
}
memcpy(pSample->u.z, z, n);
}
................................................................................
sqlite3DbFree(db, zSql);
}
/* Load the statistics from the sqlite_stat3 table. */
#ifdef SQLITE_ENABLE_STAT3
if( rc==SQLITE_OK ){
rc = loadStat3(db, sInfo.zDatabase);
}
#endif
if( rc==SQLITE_NOMEM ){
db->mallocFailed = 1;
}
return rc;
}
#endif /* SQLITE_OMIT_ANALYZE */
|
> | | > > > |
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sqlite3_stmt *pStmt = 0; /* An SQL statement being run */ char *zSql; /* Text of the SQL statement */ Index *pPrevIdx = 0; /* Previous index in the loop */ int idx = 0; /* slot in pIdx->aSample[] for next sample */ int eType; /* Datatype of a sample */ IndexSample *pSample; /* A slot in pIdx->aSample[] */ assert( db->lookaside.bEnabled==0 ); if( !sqlite3FindTable(db, "sqlite_stat3", zDb) ){ return SQLITE_OK; } zSql = sqlite3MPrintf(db, "SELECT idx,count(*) FROM %Q.sqlite_stat3" " GROUP BY idx", zDb); ................................................................................ zIndex = (char *)sqlite3_column_text(pStmt, 0); if( zIndex==0 ) continue; nSample = sqlite3_column_int(pStmt, 1); pIdx = sqlite3FindIndex(db, zIndex, zDb); if( pIdx==0 ) continue; assert( pIdx->nSample==0 ); pIdx->nSample = nSample; pIdx->aSample = sqlite3DbMallocZero(db, nSample*sizeof(IndexSample)); pIdx->avgEq = pIdx->aiRowEst[1]; if( pIdx->aSample==0 ){ db->mallocFailed = 1; sqlite3_finalize(pStmt); return SQLITE_NOMEM; } } ................................................................................ sqlite3_column_text(pStmt, 4) ); int n = z ? sqlite3_column_bytes(pStmt, 4) : 0; pSample->nByte = n; if( n < 1){ pSample->u.z = 0; }else{ pSample->u.z = sqlite3DbMallocRaw(db, n); if( pSample->u.z==0 ){ db->mallocFailed = 1; sqlite3_finalize(pStmt); return SQLITE_NOMEM; } memcpy(pSample->u.z, z, n); } ................................................................................ sqlite3DbFree(db, zSql); } /* Load the statistics from the sqlite_stat3 table. */ #ifdef SQLITE_ENABLE_STAT3 if( rc==SQLITE_OK ){ int lookasideEnabled = db->lookaside.bEnabled; db->lookaside.bEnabled = 0; rc = loadStat3(db, sInfo.zDatabase); db->lookaside.bEnabled = lookasideEnabled; } #endif if( rc==SQLITE_NOMEM ){ db->mallocFailed = 1; } return rc; } #endif /* SQLITE_OMIT_ANALYZE */ |