Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Optimization to sqlite3_value_bytes() for the common case that does not require a data transformation. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
8d79f3a1443391bee204bb8c49240f44 |
| User & Date: | drh 2015-06-25 23:52:48 |
Context
|
2015-06-26
| ||
| 02:41 | Simplify the pcache by not keeping continuous track of page 1 but instead just loading page 1 on the rare occasions when it is actually needed. check-in: 015302f1 user: drh tags: trunk | |
|
2015-06-25
| ||
| 23:52 | Optimization to sqlite3_value_bytes() for the common case that does not require a data transformation. check-in: 8d79f3a1 user: drh tags: trunk | |
| 19:53 | Simplifications and performance improvements in insertCell(). check-in: 7d02e6c9 user: drh tags: trunk | |
Changes
Changes to src/vdbemem.c.
1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 |
void sqlite3ValueFree(sqlite3_value *v){
if( !v ) return;
sqlite3VdbeMemRelease((Mem *)v);
sqlite3DbFree(((Mem*)v)->db, v);
}
/*
** Return the number of bytes in the sqlite3_value object assuming
** that it uses the encoding "enc"
*/
int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){
Mem *p = (Mem*)pVal;
if( (p->flags & MEM_Blob)!=0 || sqlite3ValueText(pVal, enc) ){
if( p->flags & MEM_Zero ){
return p->n + p->u.nZero;
}else{
return p->n;
}
}
return 0;
}
|
| | > > > > > > > > | | > |
1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 |
void sqlite3ValueFree(sqlite3_value *v){
if( !v ) return;
sqlite3VdbeMemRelease((Mem *)v);
sqlite3DbFree(((Mem*)v)->db, v);
}
/*
** The sqlite3ValueBytes() routine returns the number of bytes in the
** sqlite3_value object assuming that it uses the encoding "enc".
** The valueBytes() routine is a helper function.
*/
static SQLITE_NOINLINE int valueBytes(sqlite3_value *pVal, u8 enc){
return valueToText(pVal, enc)!=0 ? pVal->n : 0;
}
int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){
Mem *p = (Mem*)pVal;
assert( (p->flags & MEM_Null)==0 || (p->flags & (MEM_Str|MEM_Blob))==0 );
if( (p->flags & MEM_Str)!=0 && pVal->enc==enc ){
return p->n;
}
if( (p->flags & MEM_Blob)!=0 ){
if( p->flags & MEM_Zero ){
return p->n + p->u.nZero;
}else{
return p->n;
}
}
if( p->flags & MEM_Null ) return 0;
return valueBytes(pVal, enc);
}
|