database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-06 15:49:35 +03:00
Code Activity

Add the OP_Undef and OP_IsUndef opcodes. With these, use the first register

Browse Source 
in the result register range as the flag to indicate EOF on an INSERT from
a SELECT, rather than allocating a separate boolean register for that task.

FossilOrigin-Name: 6fb7448550f28a3c93053e125faeaf11de1011d0
This commit is contained in:
drh
2014-02-07 13:20:31 +00:00
parent 21a919f630
commit a5750cfe01
7 changed files with 65 additions and 53 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/vdbeaux.c
View File

@@ -1234,7 +1234,7 @@ static void releaseMemArray(Mem *p, int N){
p->zMalloc = 0;
}
p->flags = MEM_Invalid;
p->flags = MEM_Undefined;
}
db->mallocFailed = malloc_failed;
}
@@ -1702,7 +1702,7 @@ void sqlite3VdbeMakeReady(
p->aMem--; /* aMem[] goes from 1..nMem */
p->nMem = nMem; /* not from 0..nMem-1 */
for(n=1; n<=nMem; n++){
p->aMem[n].flags = MEM_Invalid;
p->aMem[n].flags = MEM_Undefined;
p->aMem[n].db = db;
}
}
@@ -1814,7 +1814,7 @@ static void Cleanup(Vdbe *p){
int i;
if( p->apCsr ) for(i=0; i<p->nCursor; i++) assert( p->apCsr[i]==0 );
if( p->aMem ){
for(i=1; i<=p->nMem; i++) assert( p->aMem[i].flags==MEM_Invalid );
for(i=1; i<=p->nMem; i++) assert( p->aMem[i].flags==MEM_Undefined );
}
#endif