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Performance optimization to the lookaside-memory disabling mechanism.

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FossilOrigin-Name: 17ce1c49cb0ed6fdd8c7c33431bc2afa217f1092c99b8dd608890a8e7aec7fb1
This commit is contained in:
drh
2019-10-05 14:39:36 +00:00
parent 228a52d973
commit 31f69626df
10 changed files with 58 additions and 47 deletions
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3
src/prepare.c
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@@ -527,6 +527,7 @@ void sqlite3ParserReset(Parse *pParse){
if( db ){
assert( db->lookaside.bDisable >= pParse->disableLookaside );
db->lookaside.bDisable -= pParse->disableLookaside;
db->lookaside.sz = db->lookaside.bDisable ? 0 : db->lookaside.szTrue;
}
pParse->disableLookaside = 0;
}
@@ -560,7 +561,7 @@ static int sqlite3Prepare(
*/
if( prepFlags & SQLITE_PREPARE_PERSISTENT ){
sParse.disableLookaside++;
db->lookaside.bDisable++;
DisableLookaside;
}
sParse.disableVtab = (prepFlags & SQLITE_PREPARE_NO_VTAB)!=0;