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Improvements to the way that OOM errors are processed.

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FossilOrigin-Name: c3ef03478a5788c855b3aef385d43ae7f494f440
This commit is contained in:
drh
2016-02-05 01:55:27 +00:00
parent e514f651d0
commit 4a642b6060
30 changed files with 166 additions and 125 deletions
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18
src/prepare.c
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@@ -32,7 +32,7 @@ static void corruptSchema(
if( z && zExtra ) z = sqlite3_mprintf("%z - %s", z, zExtra);
sqlite3DbFree(db, *pData->pzErrMsg);
*pData->pzErrMsg = z;
if( z==0 ) db->mallocFailed = 1;
if( z==0 ) sqlite3OomFault(db);
}
pData->rc = db->mallocFailed ? SQLITE_NOMEM : SQLITE_CORRUPT_BKPT;
}
@@ -91,7 +91,7 @@ int sqlite3InitCallback(void *pInit, int argc, char **argv, char **NotUsed){
}else{
pData->rc = rc;
if( rc==SQLITE_NOMEM ){
db->mallocFailed = 1;
sqlite3OomFault(db);
}else if( rc!=SQLITE_INTERRUPT && (rc&0xFF)!=SQLITE_LOCKED ){
corruptSchema(pData, argv[0], sqlite3_errmsg(db));
}
@@ -336,7 +336,7 @@ initone_error_out:
error_out:
if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){
db->mallocFailed = 1;
sqlite3OomFault(db);
}
return rc;
}
@@ -434,7 +434,7 @@ static void schemaIsValid(Parse *pParse){
if( !sqlite3BtreeIsInReadTrans(pBt) ){
rc = sqlite3BtreeBeginTrans(pBt, 0);
if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){
db->mallocFailed = 1;
sqlite3OomFault(db);
}
if( rc!=SQLITE_OK ) return;
openedTransaction = 1;
@@ -497,6 +497,11 @@ void sqlite3ParserReset(Parse *pParse){
sqlite3 *db = pParse->db;
sqlite3DbFree(db, pParse->aLabel);
sqlite3ExprListDelete(db, pParse->pConstExpr);
if( db ){
assert( db->lookaside.bDisable >= pParse->disableLookaside );
db->lookaside.bDisable -= pParse->disableLookaside;
}
pParse->disableLookaside = 0;
}
}
@@ -592,9 +597,6 @@ static int sqlite3Prepare(
}
assert( 0==pParse->nQueryLoop );
if( db->mallocFailed ){
pParse->rc = SQLITE_NOMEM;
}
if( pParse->rc==SQLITE_DONE ) pParse->rc = SQLITE_OK;
if( pParse->checkSchema ){
schemaIsValid(pParse);
@@ -716,7 +718,7 @@ int sqlite3Reprepare(Vdbe *p){
rc = sqlite3LockAndPrepare(db, zSql, -1, 0, p, &pNew, 0);
if( rc ){
if( rc==SQLITE_NOMEM ){
db->mallocFailed = 1;
sqlite3OomFault(db);
}
assert( pNew==0 );
return rc;