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Merge in the latest changes and fixes from trunk.

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FossilOrigin-Name: f6211540c9d66a08dc580dd733e4f4a98968ae30
This commit is contained in:
drh
2014-03-31 22:03:32 +00:00
parent 9bc21b535e b663587890
commit e4529c5724
46 changed files with 1789 additions and 476 deletions
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37
src/btree.c
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@@ -740,20 +740,32 @@ static int btreeRestoreCursorPosition(BtCursor *pCur){
** at is deleted out from under them.
**
** This routine returns an error code if something goes wrong. The
** integer *pHasMoved is set to one if the cursor has moved and 0 if not.
** integer *pHasMoved is set as follows:
**
** 0: The cursor is unchanged
** 1: The cursor is still pointing at the same row, but the pointers
** returned by sqlite3BtreeKeyFetch() or sqlite3BtreeDataFetch()
** might now be invalid because of a balance() or other change to the
** b-tree.
** 2: The cursor is no longer pointing to the row. The row might have
** been deleted out from under the cursor.
*/
int sqlite3BtreeCursorHasMoved(BtCursor *pCur, int *pHasMoved){
int rc;
if( pCur->eState==CURSOR_VALID ){
*pHasMoved = 0;
return SQLITE_OK;
}
rc = restoreCursorPosition(pCur);
if( rc ){
*pHasMoved = 1;
*pHasMoved = 2;
return rc;
}
if( pCur->eState!=CURSOR_VALID || NEVER(pCur->skipNext!=0) ){
*pHasMoved = 1;
*pHasMoved = 2;
}else{
*pHasMoved = 0;
*pHasMoved = 1;
}
return SQLITE_OK;
}
@@ -2155,6 +2167,7 @@ int sqlite3BtreeSetCacheSize(Btree *p, int mxPage){
return SQLITE_OK;
}
#if SQLITE_MAX_MMAP_SIZE>0
/*
** Change the limit on the amount of the database file that may be
** memory mapped.
@@ -2167,6 +2180,7 @@ int sqlite3BtreeSetMmapLimit(Btree *p, sqlite3_int64 szMmap){
sqlite3BtreeLeave(p);
return SQLITE_OK;
}
#endif /* SQLITE_MAX_MMAP_SIZE>0 */
/*
** Change the way data is synced to disk in order to increase or decrease
@@ -4190,10 +4204,13 @@ static const void *fetchPayload(
assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );
assert( cursorHoldsMutex(pCur) );
assert( pCur->aiIdx[pCur->iPage]<pCur->apPage[pCur->iPage]->nCell );
assert( pCur->info.nSize>0 );
#if 0
if( pCur->info.nSize==0 ){
btreeParseCell(pCur->apPage[pCur->iPage], pCur->aiIdx[pCur->iPage],
&pCur->info);
}
#endif
*pAmt = pCur->info.nLocal;
return (void*)(pCur->info.pCell + pCur->info.nHeader);
}
@@ -4579,6 +4596,7 @@ int sqlite3BtreeMovetoUnpacked(
if( pIdxKey ){
xRecordCompare = sqlite3VdbeFindCompare(pIdxKey);
pIdxKey->isCorrupt = 0;
assert( pIdxKey->default_rc==1
|| pIdxKey->default_rc==0
|| pIdxKey->default_rc==-1
@@ -4702,6 +4720,7 @@ int sqlite3BtreeMovetoUnpacked(
c = xRecordCompare(nCell, pCellKey, pIdxKey, 0);
sqlite3_free(pCellKey);
}
assert( pIdxKey->isCorrupt==0 || c==0 );
if( c<0 ){
lwr = idx+1;
}else if( c>0 ){
@@ -4711,6 +4730,7 @@ int sqlite3BtreeMovetoUnpacked(
*pRes = 0;
rc = SQLITE_OK;
pCur->aiIdx[pCur->iPage] = (u16)idx;
if( pIdxKey->isCorrupt ) rc = SQLITE_CORRUPT;
goto moveto_finish;
}
if( lwr>upr ) break;
@@ -7432,6 +7452,15 @@ int sqlite3BtreeClearTable(Btree *p, int iTable, int *pnChange){
return rc;
}
/*
** Delete all information from the single table that pCur is open on.
**
** This routine only work for pCur on an ephemeral table.
*/
int sqlite3BtreeClearTableOfCursor(BtCursor *pCur){
return sqlite3BtreeClearTable(pCur->pBtree, pCur->pgnoRoot, 0);
}
/*
** Erase all information in a table and add the root of the table to
** the freelist. Except, the root of the principle table (the one on